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1
2 OpenSSL CHANGES
3 _______________
4
5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
8 release branch.
9
10 Changes between 1.0.2s and 1.0.2t [xx XXX xxxx]
11
12 *) For built-in EC curves, ensure an EC_GROUP built from the curve name is
13 used even when parsing explicit parameters, when loading a serialized key
14 or calling `EC_GROUP_new_from_ecpkparameters()`/
15 `EC_GROUP_new_from_ecparameters()`.
16 This prevents bypass of security hardening and performance gains,
17 especially for curves with specialized EC_METHODs.
18 By default, if a key encoded with explicit parameters is loaded and later
19 serialized, the output is still encoded with explicit parameters, even if
20 internally a "named" EC_GROUP is used for computation.
21 [Nicola Tuveri]
22
23 *) Compute ECC cofactors if not provided during EC_GROUP construction. Before
24 this change, EC_GROUP_set_generator would accept order and/or cofactor as
25 NULL. After this change, only the cofactor parameter can be NULL. It also
26 does some minimal sanity checks on the passed order.
27 (CVE-2019-1547)
28 [Billy Bob Brumley]
29
30 *) Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey.
31 An attack is simple, if the first CMS_recipientInfo is valid but the
32 second CMS_recipientInfo is chosen ciphertext. If the second
33 recipientInfo decodes to PKCS #1 v1.5 form plaintext, the correct
34 encryption key will be replaced by garbage, and the message cannot be
35 decoded, but if the RSA decryption fails, the correct encryption key is
36 used and the recipient will not notice the attack.
37 As a work around for this potential attack the length of the decrypted
38 key must be equal to the cipher default key length, in case the
39 certifiate is not given and all recipientInfo are tried out.
40 The old behaviour can be re-enabled in the CMS code by setting the
41 CMS_DEBUG_DECRYPT flag.
42 (CVE-2019-1563)
43 [Bernd Edlinger]
44
45 *) Document issue with installation paths in diverse Windows builds
46
47 '/usr/local/ssl' is an unsafe prefix for location to install OpenSSL
48 binaries and run-time config file.
49 (CVE-2019-1552)
50 [Richard Levitte]
51
52 Changes between 1.0.2r and 1.0.2s [28 May 2019]
53
54 *) Change the default RSA, DSA and DH size to 2048 bit instead of 1024.
55 This changes the size when using the genpkey app when no size is given. It
56 fixes an omission in earlier changes that changed all RSA, DSA and DH
57 generation apps to use 2048 bits by default.
58 [Kurt Roeckx]
59
60 *) Add FIPS support for Android Arm 64-bit
61
62 Support for Android Arm 64-bit was added to the OpenSSL FIPS Object
63 Module in Version 2.0.10. For some reason, the corresponding target
64 'android64-aarch64' was missing OpenSSL 1.0.2, whence it could not be
65 built with FIPS support on Android Arm 64-bit. This omission has been
66 fixed.
67 [Matthias St. Pierre]
68
69 Changes between 1.0.2q and 1.0.2r [26 Feb 2019]
70
71 *) 0-byte record padding oracle
72
73 If an application encounters a fatal protocol error and then calls
74 SSL_shutdown() twice (once to send a close_notify, and once to receive one)
75 then OpenSSL can respond differently to the calling application if a 0 byte
76 record is received with invalid padding compared to if a 0 byte record is
77 received with an invalid MAC. If the application then behaves differently
78 based on that in a way that is detectable to the remote peer, then this
79 amounts to a padding oracle that could be used to decrypt data.
80
81 In order for this to be exploitable "non-stitched" ciphersuites must be in
82 use. Stitched ciphersuites are optimised implementations of certain
83 commonly used ciphersuites. Also the application must call SSL_shutdown()
84 twice even if a protocol error has occurred (applications should not do
85 this but some do anyway).
86
87 This issue was discovered by Juraj Somorovsky, Robert Merget and Nimrod
88 Aviram, with additional investigation by Steven Collison and Andrew
89 Hourselt. It was reported to OpenSSL on 10th December 2018.
90 (CVE-2019-1559)
91 [Matt Caswell]
92
93 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0().
94 [Richard Levitte]
95
96 Changes between 1.0.2p and 1.0.2q [20 Nov 2018]
97
98 *) Microarchitecture timing vulnerability in ECC scalar multiplication
99
100 OpenSSL ECC scalar multiplication, used in e.g. ECDSA and ECDH, has been
101 shown to be vulnerable to a microarchitecture timing side channel attack.
102 An attacker with sufficient access to mount local timing attacks during
103 ECDSA signature generation could recover the private key.
104
105 This issue was reported to OpenSSL on 26th October 2018 by Alejandro
106 Cabrera Aldaya, Billy Brumley, Sohaib ul Hassan, Cesar Pereida Garcia and
107 Nicola Tuveri.
108 (CVE-2018-5407)
109 [Billy Brumley]
110
111 *) Timing vulnerability in DSA signature generation
112
113 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
114 timing side channel attack. An attacker could use variations in the signing
115 algorithm to recover the private key.
116
117 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser.
118 (CVE-2018-0734)
119 [Paul Dale]
120
121 *) Resolve a compatibility issue in EC_GROUP handling with the FIPS Object
122 Module, accidentally introduced while backporting security fixes from the
123 development branch and hindering the use of ECC in FIPS mode.
124 [Nicola Tuveri]
125
126 Changes between 1.0.2o and 1.0.2p [14 Aug 2018]
127
128 *) Client DoS due to large DH parameter
129
130 During key agreement in a TLS handshake using a DH(E) based ciphersuite a
131 malicious server can send a very large prime value to the client. This will
132 cause the client to spend an unreasonably long period of time generating a
133 key for this prime resulting in a hang until the client has finished. This
134 could be exploited in a Denial Of Service attack.
135
136 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken
137 (CVE-2018-0732)
138 [Guido Vranken]
139
140 *) Cache timing vulnerability in RSA Key Generation
141
142 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to
143 a cache timing side channel attack. An attacker with sufficient access to
144 mount cache timing attacks during the RSA key generation process could
145 recover the private key.
146
147 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera
148 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia.
149 (CVE-2018-0737)
150 [Billy Brumley]
151
152 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str
153 parameter is no longer accepted, as it leads to a corrupt table. NULL
154 pem_str is reserved for alias entries only.
155 [Richard Levitte]
156
157 *) Revert blinding in ECDSA sign and instead make problematic addition
158 length-invariant. Switch even to fixed-length Montgomery multiplication.
159 [Andy Polyakov]
160
161 *) Change generating and checking of primes so that the error rate of not
162 being prime depends on the intended use based on the size of the input.
163 For larger primes this will result in more rounds of Miller-Rabin.
164 The maximal error rate for primes with more than 1080 bits is lowered
165 to 2^-128.
166 [Kurt Roeckx, Annie Yousar]
167
168 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64.
169 [Kurt Roeckx]
170
171 *) Add blinding to ECDSA and DSA signatures to protect against side channel
172 attacks discovered by Keegan Ryan (NCC Group).
173 [Matt Caswell]
174
175 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
176 now allow empty (zero character) pass phrases.
177 [Richard Levitte]
178
179 *) Certificate time validation (X509_cmp_time) enforces stricter
180 compliance with RFC 5280. Fractional seconds and timezone offsets
181 are no longer allowed.
182 [Emilia Käsper]
183
184 Changes between 1.0.2n and 1.0.2o [27 Mar 2018]
185
186 *) Constructed ASN.1 types with a recursive definition could exceed the stack
187
188 Constructed ASN.1 types with a recursive definition (such as can be found
189 in PKCS7) could eventually exceed the stack given malicious input with
190 excessive recursion. This could result in a Denial Of Service attack. There
191 are no such structures used within SSL/TLS that come from untrusted sources
192 so this is considered safe.
193
194 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
195 project.
196 (CVE-2018-0739)
197 [Matt Caswell]
198
199 Changes between 1.0.2m and 1.0.2n [7 Dec 2017]
200
201 *) Read/write after SSL object in error state
202
203 OpenSSL 1.0.2 (starting from version 1.0.2b) introduced an "error state"
204 mechanism. The intent was that if a fatal error occurred during a handshake
205 then OpenSSL would move into the error state and would immediately fail if
206 you attempted to continue the handshake. This works as designed for the
207 explicit handshake functions (SSL_do_handshake(), SSL_accept() and
208 SSL_connect()), however due to a bug it does not work correctly if
209 SSL_read() or SSL_write() is called directly. In that scenario, if the
210 handshake fails then a fatal error will be returned in the initial function
211 call. If SSL_read()/SSL_write() is subsequently called by the application
212 for the same SSL object then it will succeed and the data is passed without
213 being decrypted/encrypted directly from the SSL/TLS record layer.
214
215 In order to exploit this issue an application bug would have to be present
216 that resulted in a call to SSL_read()/SSL_write() being issued after having
217 already received a fatal error.
218
219 This issue was reported to OpenSSL by David Benjamin (Google).
220 (CVE-2017-3737)
221 [Matt Caswell]
222
223 *) rsaz_1024_mul_avx2 overflow bug on x86_64
224
225 There is an overflow bug in the AVX2 Montgomery multiplication procedure
226 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
227 Analysis suggests that attacks against RSA and DSA as a result of this
228 defect would be very difficult to perform and are not believed likely.
229 Attacks against DH1024 are considered just feasible, because most of the
230 work necessary to deduce information about a private key may be performed
231 offline. The amount of resources required for such an attack would be
232 significant. However, for an attack on TLS to be meaningful, the server
233 would have to share the DH1024 private key among multiple clients, which is
234 no longer an option since CVE-2016-0701.
235
236 This only affects processors that support the AVX2 but not ADX extensions
237 like Intel Haswell (4th generation).
238
239 This issue was reported to OpenSSL by David Benjamin (Google). The issue
240 was originally found via the OSS-Fuzz project.
241 (CVE-2017-3738)
242 [Andy Polyakov]
243
244 Changes between 1.0.2l and 1.0.2m [2 Nov 2017]
245
246 *) bn_sqrx8x_internal carry bug on x86_64
247
248 There is a carry propagating bug in the x86_64 Montgomery squaring
249 procedure. No EC algorithms are affected. Analysis suggests that attacks
250 against RSA and DSA as a result of this defect would be very difficult to
251 perform and are not believed likely. Attacks against DH are considered just
252 feasible (although very difficult) because most of the work necessary to
253 deduce information about a private key may be performed offline. The amount
254 of resources required for such an attack would be very significant and
255 likely only accessible to a limited number of attackers. An attacker would
256 additionally need online access to an unpatched system using the target
257 private key in a scenario with persistent DH parameters and a private
258 key that is shared between multiple clients.
259
260 This only affects processors that support the BMI1, BMI2 and ADX extensions
261 like Intel Broadwell (5th generation) and later or AMD Ryzen.
262
263 This issue was reported to OpenSSL by the OSS-Fuzz project.
264 (CVE-2017-3736)
265 [Andy Polyakov]
266
267 *) Malformed X.509 IPAddressFamily could cause OOB read
268
269 If an X.509 certificate has a malformed IPAddressFamily extension,
270 OpenSSL could do a one-byte buffer overread. The most likely result
271 would be an erroneous display of the certificate in text format.
272
273 This issue was reported to OpenSSL by the OSS-Fuzz project.
274 (CVE-2017-3735)
275 [Rich Salz]
276
277 Changes between 1.0.2k and 1.0.2l [25 May 2017]
278
279 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
280 platform rather than 'mingw'.
281 [Richard Levitte]
282
283 Changes between 1.0.2j and 1.0.2k [26 Jan 2017]
284
285 *) Truncated packet could crash via OOB read
286
287 If one side of an SSL/TLS path is running on a 32-bit host and a specific
288 cipher is being used, then a truncated packet can cause that host to
289 perform an out-of-bounds read, usually resulting in a crash.
290
291 This issue was reported to OpenSSL by Robert Święcki of Google.
292 (CVE-2017-3731)
293 [Andy Polyakov]
294
295 *) BN_mod_exp may produce incorrect results on x86_64
296
297 There is a carry propagating bug in the x86_64 Montgomery squaring
298 procedure. No EC algorithms are affected. Analysis suggests that attacks
299 against RSA and DSA as a result of this defect would be very difficult to
300 perform and are not believed likely. Attacks against DH are considered just
301 feasible (although very difficult) because most of the work necessary to
302 deduce information about a private key may be performed offline. The amount
303 of resources required for such an attack would be very significant and
304 likely only accessible to a limited number of attackers. An attacker would
305 additionally need online access to an unpatched system using the target
306 private key in a scenario with persistent DH parameters and a private
307 key that is shared between multiple clients. For example this can occur by
308 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
309 similar to CVE-2015-3193 but must be treated as a separate problem.
310
311 This issue was reported to OpenSSL by the OSS-Fuzz project.
312 (CVE-2017-3732)
313 [Andy Polyakov]
314
315 *) Montgomery multiplication may produce incorrect results
316
317 There is a carry propagating bug in the Broadwell-specific Montgomery
318 multiplication procedure that handles input lengths divisible by, but
319 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
320 and DH private keys are impossible. This is because the subroutine in
321 question is not used in operations with the private key itself and an input
322 of the attacker's direct choice. Otherwise the bug can manifest itself as
323 transient authentication and key negotiation failures or reproducible
324 erroneous outcome of public-key operations with specially crafted input.
325 Among EC algorithms only Brainpool P-512 curves are affected and one
326 presumably can attack ECDH key negotiation. Impact was not analyzed in
327 detail, because pre-requisites for attack are considered unlikely. Namely
328 multiple clients have to choose the curve in question and the server has to
329 share the private key among them, neither of which is default behaviour.
330 Even then only clients that chose the curve will be affected.
331
332 This issue was publicly reported as transient failures and was not
333 initially recognized as a security issue. Thanks to Richard Morgan for
334 providing reproducible case.
335 (CVE-2016-7055)
336 [Andy Polyakov]
337
338 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
339 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
340 prevent issues where no progress is being made and the peer continually
341 sends unrecognised record types, using up resources processing them.
342 [Matt Caswell]
343
344 Changes between 1.0.2i and 1.0.2j [26 Sep 2016]
345
346 *) Missing CRL sanity check
347
348 A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
349 but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
350 CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.
351
352 This issue only affects the OpenSSL 1.0.2i
353 (CVE-2016-7052)
354 [Matt Caswell]
355
356 Changes between 1.0.2h and 1.0.2i [22 Sep 2016]
357
358 *) OCSP Status Request extension unbounded memory growth
359
360 A malicious client can send an excessively large OCSP Status Request
361 extension. If that client continually requests renegotiation, sending a
362 large OCSP Status Request extension each time, then there will be unbounded
363 memory growth on the server. This will eventually lead to a Denial Of
364 Service attack through memory exhaustion. Servers with a default
365 configuration are vulnerable even if they do not support OCSP. Builds using
366 the "no-ocsp" build time option are not affected.
367
368 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
369 (CVE-2016-6304)
370 [Matt Caswell]
371
372 *) In order to mitigate the SWEET32 attack, the DES ciphers were moved from
373 HIGH to MEDIUM.
374
375 This issue was reported to OpenSSL Karthikeyan Bhargavan and Gaetan
376 Leurent (INRIA)
377 (CVE-2016-2183)
378 [Rich Salz]
379
380 *) OOB write in MDC2_Update()
381
382 An overflow can occur in MDC2_Update() either if called directly or
383 through the EVP_DigestUpdate() function using MDC2. If an attacker
384 is able to supply very large amounts of input data after a previous
385 call to EVP_EncryptUpdate() with a partial block then a length check
386 can overflow resulting in a heap corruption.
387
388 The amount of data needed is comparable to SIZE_MAX which is impractical
389 on most platforms.
390
391 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
392 (CVE-2016-6303)
393 [Stephen Henson]
394
395 *) Malformed SHA512 ticket DoS
396
397 If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
398 DoS attack where a malformed ticket will result in an OOB read which will
399 ultimately crash.
400
401 The use of SHA512 in TLS session tickets is comparatively rare as it requires
402 a custom server callback and ticket lookup mechanism.
403
404 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
405 (CVE-2016-6302)
406 [Stephen Henson]
407
408 *) OOB write in BN_bn2dec()
409
410 The function BN_bn2dec() does not check the return value of BN_div_word().
411 This can cause an OOB write if an application uses this function with an
412 overly large BIGNUM. This could be a problem if an overly large certificate
413 or CRL is printed out from an untrusted source. TLS is not affected because
414 record limits will reject an oversized certificate before it is parsed.
415
416 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
417 (CVE-2016-2182)
418 [Stephen Henson]
419
420 *) OOB read in TS_OBJ_print_bio()
421
422 The function TS_OBJ_print_bio() misuses OBJ_obj2txt(): the return value is
423 the total length the OID text representation would use and not the amount
424 of data written. This will result in OOB reads when large OIDs are
425 presented.
426
427 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
428 (CVE-2016-2180)
429 [Stephen Henson]
430
431 *) Pointer arithmetic undefined behaviour
432
433 Avoid some undefined pointer arithmetic
434
435 A common idiom in the codebase is to check limits in the following manner:
436 "p + len > limit"
437
438 Where "p" points to some malloc'd data of SIZE bytes and
439 limit == p + SIZE
440
441 "len" here could be from some externally supplied data (e.g. from a TLS
442 message).
443
444 The rules of C pointer arithmetic are such that "p + len" is only well
445 defined where len <= SIZE. Therefore the above idiom is actually
446 undefined behaviour.
447
448 For example this could cause problems if some malloc implementation
449 provides an address for "p" such that "p + len" actually overflows for
450 values of len that are too big and therefore p + len < limit.
451
452 This issue was reported to OpenSSL by Guido Vranken
453 (CVE-2016-2177)
454 [Matt Caswell]
455
456 *) Constant time flag not preserved in DSA signing
457
458 Operations in the DSA signing algorithm should run in constant time in
459 order to avoid side channel attacks. A flaw in the OpenSSL DSA
460 implementation means that a non-constant time codepath is followed for
461 certain operations. This has been demonstrated through a cache-timing
462 attack to be sufficient for an attacker to recover the private DSA key.
463
464 This issue was reported by César Pereida (Aalto University), Billy Brumley
465 (Tampere University of Technology), and Yuval Yarom (The University of
466 Adelaide and NICTA).
467 (CVE-2016-2178)
468 [César Pereida]
469
470 *) DTLS buffered message DoS
471
472 In a DTLS connection where handshake messages are delivered out-of-order
473 those messages that OpenSSL is not yet ready to process will be buffered
474 for later use. Under certain circumstances, a flaw in the logic means that
475 those messages do not get removed from the buffer even though the handshake
476 has been completed. An attacker could force up to approx. 15 messages to
477 remain in the buffer when they are no longer required. These messages will
478 be cleared when the DTLS connection is closed. The default maximum size for
479 a message is 100k. Therefore the attacker could force an additional 1500k
480 to be consumed per connection. By opening many simulataneous connections an
481 attacker could cause a DoS attack through memory exhaustion.
482
483 This issue was reported to OpenSSL by Quan Luo.
484 (CVE-2016-2179)
485 [Matt Caswell]
486
487 *) DTLS replay protection DoS
488
489 A flaw in the DTLS replay attack protection mechanism means that records
490 that arrive for future epochs update the replay protection "window" before
491 the MAC for the record has been validated. This could be exploited by an
492 attacker by sending a record for the next epoch (which does not have to
493 decrypt or have a valid MAC), with a very large sequence number. This means
494 that all subsequent legitimate packets are dropped causing a denial of
495 service for a specific DTLS connection.
496
497 This issue was reported to OpenSSL by the OCAP audit team.
498 (CVE-2016-2181)
499 [Matt Caswell]
500
501 *) Certificate message OOB reads
502
503 In OpenSSL 1.0.2 and earlier some missing message length checks can result
504 in OOB reads of up to 2 bytes beyond an allocated buffer. There is a
505 theoretical DoS risk but this has not been observed in practice on common
506 platforms.
507
508 The messages affected are client certificate, client certificate request
509 and server certificate. As a result the attack can only be performed
510 against a client or a server which enables client authentication.
511
512 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
513 (CVE-2016-6306)
514 [Stephen Henson]
515
516 Changes between 1.0.2g and 1.0.2h [3 May 2016]
517
518 *) Prevent padding oracle in AES-NI CBC MAC check
519
520 A MITM attacker can use a padding oracle attack to decrypt traffic
521 when the connection uses an AES CBC cipher and the server support
522 AES-NI.
523
524 This issue was introduced as part of the fix for Lucky 13 padding
525 attack (CVE-2013-0169). The padding check was rewritten to be in
526 constant time by making sure that always the same bytes are read and
527 compared against either the MAC or padding bytes. But it no longer
528 checked that there was enough data to have both the MAC and padding
529 bytes.
530
531 This issue was reported by Juraj Somorovsky using TLS-Attacker.
532 (CVE-2016-2107)
533 [Kurt Roeckx]
534
535 *) Fix EVP_EncodeUpdate overflow
536
537 An overflow can occur in the EVP_EncodeUpdate() function which is used for
538 Base64 encoding of binary data. If an attacker is able to supply very large
539 amounts of input data then a length check can overflow resulting in a heap
540 corruption.
541
542 Internally to OpenSSL the EVP_EncodeUpdate() function is primarly used by
543 the PEM_write_bio* family of functions. These are mainly used within the
544 OpenSSL command line applications, so any application which processes data
545 from an untrusted source and outputs it as a PEM file should be considered
546 vulnerable to this issue. User applications that call these APIs directly
547 with large amounts of untrusted data may also be vulnerable.
548
549 This issue was reported by Guido Vranken.
550 (CVE-2016-2105)
551 [Matt Caswell]
552
553 *) Fix EVP_EncryptUpdate overflow
554
555 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
556 is able to supply very large amounts of input data after a previous call to
557 EVP_EncryptUpdate() with a partial block then a length check can overflow
558 resulting in a heap corruption. Following an analysis of all OpenSSL
559 internal usage of the EVP_EncryptUpdate() function all usage is one of two
560 forms. The first form is where the EVP_EncryptUpdate() call is known to be
561 the first called function after an EVP_EncryptInit(), and therefore that
562 specific call must be safe. The second form is where the length passed to
563 EVP_EncryptUpdate() can be seen from the code to be some small value and
564 therefore there is no possibility of an overflow. Since all instances are
565 one of these two forms, it is believed that there can be no overflows in
566 internal code due to this problem. It should be noted that
567 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
568 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
569 of these calls have also been analysed too and it is believed there are no
570 instances in internal usage where an overflow could occur.
571
572 This issue was reported by Guido Vranken.
573 (CVE-2016-2106)
574 [Matt Caswell]
575
576 *) Prevent ASN.1 BIO excessive memory allocation
577
578 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
579 a short invalid encoding can casuse allocation of large amounts of memory
580 potentially consuming excessive resources or exhausting memory.
581
582 Any application parsing untrusted data through d2i BIO functions is
583 affected. The memory based functions such as d2i_X509() are *not* affected.
584 Since the memory based functions are used by the TLS library, TLS
585 applications are not affected.
586
587 This issue was reported by Brian Carpenter.
588 (CVE-2016-2109)
589 [Stephen Henson]
590
591 *) EBCDIC overread
592
593 ASN1 Strings that are over 1024 bytes can cause an overread in applications
594 using the X509_NAME_oneline() function on EBCDIC systems. This could result
595 in arbitrary stack data being returned in the buffer.
596
597 This issue was reported by Guido Vranken.
598 (CVE-2016-2176)
599 [Matt Caswell]
600
601 *) Modify behavior of ALPN to invoke callback after SNI/servername
602 callback, such that updates to the SSL_CTX affect ALPN.
603 [Todd Short]
604
605 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
606 default.
607 [Kurt Roeckx]
608
609 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
610 methods are enabled and ssl2 is disabled the methods return NULL.
611 [Kurt Roeckx]
612
613 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
614
615 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
616 Builds that are not configured with "enable-weak-ssl-ciphers" will not
617 provide any "EXPORT" or "LOW" strength ciphers.
618 [Viktor Dukhovni]
619
620 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
621 is by default disabled at build-time. Builds that are not configured with
622 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
623 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
624 will need to explicitly call either of:
625
626 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
627 or
628 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
629
630 as appropriate. Even if either of those is used, or the application
631 explicitly uses the version-specific SSLv2_method() or its client and
632 server variants, SSLv2 ciphers vulnerable to exhaustive search key
633 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
634 ciphers, and SSLv2 56-bit DES are no longer available.
635 (CVE-2016-0800)
636 [Viktor Dukhovni]
637
638 *) Fix a double-free in DSA code
639
640 A double free bug was discovered when OpenSSL parses malformed DSA private
641 keys and could lead to a DoS attack or memory corruption for applications
642 that receive DSA private keys from untrusted sources. This scenario is
643 considered rare.
644
645 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
646 libFuzzer.
647 (CVE-2016-0705)
648 [Stephen Henson]
649
650 *) Disable SRP fake user seed to address a server memory leak.
651
652 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
653
654 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
655 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
656 was changed to ignore the "fake user" SRP seed, even if the seed
657 is configured.
658
659 Users should use SRP_VBASE_get1_by_user instead. Note that in
660 SRP_VBASE_get1_by_user, caller must free the returned value. Note
661 also that even though configuring the SRP seed attempts to hide
662 invalid usernames by continuing the handshake with fake
663 credentials, this behaviour is not constant time and no strong
664 guarantees are made that the handshake is indistinguishable from
665 that of a valid user.
666 (CVE-2016-0798)
667 [Emilia Käsper]
668
669 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
670
671 In the BN_hex2bn function the number of hex digits is calculated using an
672 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
673 large values of |i| this can result in |bn_expand| not allocating any
674 memory because |i * 4| is negative. This can leave the internal BIGNUM data
675 field as NULL leading to a subsequent NULL ptr deref. For very large values
676 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
677 In this case memory is allocated to the internal BIGNUM data field, but it
678 is insufficiently sized leading to heap corruption. A similar issue exists
679 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
680 is ever called by user applications with very large untrusted hex/dec data.
681 This is anticipated to be a rare occurrence.
682
683 All OpenSSL internal usage of these functions use data that is not expected
684 to be untrusted, e.g. config file data or application command line
685 arguments. If user developed applications generate config file data based
686 on untrusted data then it is possible that this could also lead to security
687 consequences. This is also anticipated to be rare.
688
689 This issue was reported to OpenSSL by Guido Vranken.
690 (CVE-2016-0797)
691 [Matt Caswell]
692
693 *) Fix memory issues in BIO_*printf functions
694
695 The internal |fmtstr| function used in processing a "%s" format string in
696 the BIO_*printf functions could overflow while calculating the length of a
697 string and cause an OOB read when printing very long strings.
698
699 Additionally the internal |doapr_outch| function can attempt to write to an
700 OOB memory location (at an offset from the NULL pointer) in the event of a
701 memory allocation failure. In 1.0.2 and below this could be caused where
702 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
703 could be in processing a very long "%s" format string. Memory leaks can
704 also occur.
705
706 The first issue may mask the second issue dependent on compiler behaviour.
707 These problems could enable attacks where large amounts of untrusted data
708 is passed to the BIO_*printf functions. If applications use these functions
709 in this way then they could be vulnerable. OpenSSL itself uses these
710 functions when printing out human-readable dumps of ASN.1 data. Therefore
711 applications that print this data could be vulnerable if the data is from
712 untrusted sources. OpenSSL command line applications could also be
713 vulnerable where they print out ASN.1 data, or if untrusted data is passed
714 as command line arguments.
715
716 Libssl is not considered directly vulnerable. Additionally certificates etc
717 received via remote connections via libssl are also unlikely to be able to
718 trigger these issues because of message size limits enforced within libssl.
719
720 This issue was reported to OpenSSL Guido Vranken.
721 (CVE-2016-0799)
722 [Matt Caswell]
723
724 *) Side channel attack on modular exponentiation
725
726 A side-channel attack was found which makes use of cache-bank conflicts on
727 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
728 of RSA keys. The ability to exploit this issue is limited as it relies on
729 an attacker who has control of code in a thread running on the same
730 hyper-threaded core as the victim thread which is performing decryptions.
731
732 This issue was reported to OpenSSL by Yuval Yarom, The University of
733 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
734 Nadia Heninger, University of Pennsylvania with more information at
735 http://cachebleed.info.
736 (CVE-2016-0702)
737 [Andy Polyakov]
738
739 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
740 if no keysize is specified with default_bits. This fixes an
741 omission in an earlier change that changed all RSA/DSA key generation
742 apps to use 2048 bits by default.
743 [Emilia Käsper]
744
745 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
746
747 *) DH small subgroups
748
749 Historically OpenSSL only ever generated DH parameters based on "safe"
750 primes. More recently (in version 1.0.2) support was provided for
751 generating X9.42 style parameter files such as those required for RFC 5114
752 support. The primes used in such files may not be "safe". Where an
753 application is using DH configured with parameters based on primes that are
754 not "safe" then an attacker could use this fact to find a peer's private
755 DH exponent. This attack requires that the attacker complete multiple
756 handshakes in which the peer uses the same private DH exponent. For example
757 this could be used to discover a TLS server's private DH exponent if it's
758 reusing the private DH exponent or it's using a static DH ciphersuite.
759
760 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
761 TLS. It is not on by default. If the option is not set then the server
762 reuses the same private DH exponent for the life of the server process and
763 would be vulnerable to this attack. It is believed that many popular
764 applications do set this option and would therefore not be at risk.
765
766 The fix for this issue adds an additional check where a "q" parameter is
767 available (as is the case in X9.42 based parameters). This detects the
768 only known attack, and is the only possible defense for static DH
769 ciphersuites. This could have some performance impact.
770
771 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
772 default and cannot be disabled. This could have some performance impact.
773
774 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
775 (CVE-2016-0701)
776 [Matt Caswell]
777
778 *) SSLv2 doesn't block disabled ciphers
779
780 A malicious client can negotiate SSLv2 ciphers that have been disabled on
781 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
782 been disabled, provided that the SSLv2 protocol was not also disabled via
783 SSL_OP_NO_SSLv2.
784
785 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
786 and Sebastian Schinzel.
787 (CVE-2015-3197)
788 [Viktor Dukhovni]
789
790 *) Reject DH handshakes with parameters shorter than 1024 bits.
791 [Kurt Roeckx]
792
793 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
794
795 *) BN_mod_exp may produce incorrect results on x86_64
796
797 There is a carry propagating bug in the x86_64 Montgomery squaring
798 procedure. No EC algorithms are affected. Analysis suggests that attacks
799 against RSA and DSA as a result of this defect would be very difficult to
800 perform and are not believed likely. Attacks against DH are considered just
801 feasible (although very difficult) because most of the work necessary to
802 deduce information about a private key may be performed offline. The amount
803 of resources required for such an attack would be very significant and
804 likely only accessible to a limited number of attackers. An attacker would
805 additionally need online access to an unpatched system using the target
806 private key in a scenario with persistent DH parameters and a private
807 key that is shared between multiple clients. For example this can occur by
808 default in OpenSSL DHE based SSL/TLS ciphersuites.
809
810 This issue was reported to OpenSSL by Hanno Böck.
811 (CVE-2015-3193)
812 [Andy Polyakov]
813
814 *) Certificate verify crash with missing PSS parameter
815
816 The signature verification routines will crash with a NULL pointer
817 dereference if presented with an ASN.1 signature using the RSA PSS
818 algorithm and absent mask generation function parameter. Since these
819 routines are used to verify certificate signature algorithms this can be
820 used to crash any certificate verification operation and exploited in a
821 DoS attack. Any application which performs certificate verification is
822 vulnerable including OpenSSL clients and servers which enable client
823 authentication.
824
825 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
826 (CVE-2015-3194)
827 [Stephen Henson]
828
829 *) X509_ATTRIBUTE memory leak
830
831 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
832 memory. This structure is used by the PKCS#7 and CMS routines so any
833 application which reads PKCS#7 or CMS data from untrusted sources is
834 affected. SSL/TLS is not affected.
835
836 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
837 libFuzzer.
838 (CVE-2015-3195)
839 [Stephen Henson]
840
841 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
842 This changes the decoding behaviour for some invalid messages,
843 though the change is mostly in the more lenient direction, and
844 legacy behaviour is preserved as much as possible.
845 [Emilia Käsper]
846
847 *) In DSA_generate_parameters_ex, if the provided seed is too short,
848 use a random seed, as already documented.
849 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
850
851 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
852
853 *) Alternate chains certificate forgery
854
855 During certificate verfification, OpenSSL will attempt to find an
856 alternative certificate chain if the first attempt to build such a chain
857 fails. An error in the implementation of this logic can mean that an
858 attacker could cause certain checks on untrusted certificates to be
859 bypassed, such as the CA flag, enabling them to use a valid leaf
860 certificate to act as a CA and "issue" an invalid certificate.
861
862 This issue was reported to OpenSSL by Adam Langley/David Benjamin
863 (Google/BoringSSL).
864 (CVE-2015-1793)
865 [Matt Caswell]
866
867 *) Race condition handling PSK identify hint
868
869 If PSK identity hints are received by a multi-threaded client then
870 the values are wrongly updated in the parent SSL_CTX structure. This can
871 result in a race condition potentially leading to a double free of the
872 identify hint data.
873 (CVE-2015-3196)
874 [Stephen Henson]
875
876 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
877
878 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
879 incompatibility in the handling of HMAC. The previous ABI has now been
880 restored.
881
882 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
883
884 *) Malformed ECParameters causes infinite loop
885
886 When processing an ECParameters structure OpenSSL enters an infinite loop
887 if the curve specified is over a specially malformed binary polynomial
888 field.
889
890 This can be used to perform denial of service against any
891 system which processes public keys, certificate requests or
892 certificates. This includes TLS clients and TLS servers with
893 client authentication enabled.
894
895 This issue was reported to OpenSSL by Joseph Barr-Pixton.
896 (CVE-2015-1788)
897 [Andy Polyakov]
898
899 *) Exploitable out-of-bounds read in X509_cmp_time
900
901 X509_cmp_time does not properly check the length of the ASN1_TIME
902 string and can read a few bytes out of bounds. In addition,
903 X509_cmp_time accepts an arbitrary number of fractional seconds in the
904 time string.
905
906 An attacker can use this to craft malformed certificates and CRLs of
907 various sizes and potentially cause a segmentation fault, resulting in
908 a DoS on applications that verify certificates or CRLs. TLS clients
909 that verify CRLs are affected. TLS clients and servers with client
910 authentication enabled may be affected if they use custom verification
911 callbacks.
912
913 This issue was reported to OpenSSL by Robert Swiecki (Google), and
914 independently by Hanno Böck.
915 (CVE-2015-1789)
916 [Emilia Käsper]
917
918 *) PKCS7 crash with missing EnvelopedContent
919
920 The PKCS#7 parsing code does not handle missing inner EncryptedContent
921 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
922 with missing content and trigger a NULL pointer dereference on parsing.
923
924 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
925 structures from untrusted sources are affected. OpenSSL clients and
926 servers are not affected.
927
928 This issue was reported to OpenSSL by Michal Zalewski (Google).
929 (CVE-2015-1790)
930 [Emilia Käsper]
931
932 *) CMS verify infinite loop with unknown hash function
933
934 When verifying a signedData message the CMS code can enter an infinite loop
935 if presented with an unknown hash function OID. This can be used to perform
936 denial of service against any system which verifies signedData messages using
937 the CMS code.
938 This issue was reported to OpenSSL by Johannes Bauer.
939 (CVE-2015-1792)
940 [Stephen Henson]
941
942 *) Race condition handling NewSessionTicket
943
944 If a NewSessionTicket is received by a multi-threaded client when attempting to
945 reuse a previous ticket then a race condition can occur potentially leading to
946 a double free of the ticket data.
947 (CVE-2015-1791)
948 [Matt Caswell]
949
950 *) Removed support for the two export grade static DH ciphersuites
951 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
952 were newly added (along with a number of other static DH ciphersuites) to
953 1.0.2. However the two export ones have *never* worked since they were
954 introduced. It seems strange in any case to be adding new export
955 ciphersuites, and given "logjam" it also does not seem correct to fix them.
956 [Matt Caswell]
957
958 *) Only support 256-bit or stronger elliptic curves with the
959 'ecdh_auto' setting (server) or by default (client). Of supported
960 curves, prefer P-256 (both).
961 [Emilia Kasper]
962
963 *) Reject DH handshakes with parameters shorter than 768 bits.
964 [Kurt Roeckx and Emilia Kasper]
965
966 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
967
968 *) ClientHello sigalgs DoS fix
969
970 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
971 invalid signature algorithms extension a NULL pointer dereference will
972 occur. This can be exploited in a DoS attack against the server.
973
974 This issue was was reported to OpenSSL by David Ramos of Stanford
975 University.
976 (CVE-2015-0291)
977 [Stephen Henson and Matt Caswell]
978
979 *) Multiblock corrupted pointer fix
980
981 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
982 feature only applies on 64 bit x86 architecture platforms that support AES
983 NI instructions. A defect in the implementation of "multiblock" can cause
984 OpenSSL's internal write buffer to become incorrectly set to NULL when
985 using non-blocking IO. Typically, when the user application is using a
986 socket BIO for writing, this will only result in a failed connection.
987 However if some other BIO is used then it is likely that a segmentation
988 fault will be triggered, thus enabling a potential DoS attack.
989
990 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
991 (CVE-2015-0290)
992 [Matt Caswell]
993
994 *) Segmentation fault in DTLSv1_listen fix
995
996 The DTLSv1_listen function is intended to be stateless and processes the
997 initial ClientHello from many peers. It is common for user code to loop
998 over the call to DTLSv1_listen until a valid ClientHello is received with
999 an associated cookie. A defect in the implementation of DTLSv1_listen means
1000 that state is preserved in the SSL object from one invocation to the next
1001 that can lead to a segmentation fault. Errors processing the initial
1002 ClientHello can trigger this scenario. An example of such an error could be
1003 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1004 server.
1005
1006 This issue was reported to OpenSSL by Per Allansson.
1007 (CVE-2015-0207)
1008 [Matt Caswell]
1009
1010 *) Segmentation fault in ASN1_TYPE_cmp fix
1011
1012 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1013 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1014 certificate signature algorithm consistency this can be used to crash any
1015 certificate verification operation and exploited in a DoS attack. Any
1016 application which performs certificate verification is vulnerable including
1017 OpenSSL clients and servers which enable client authentication.
1018 (CVE-2015-0286)
1019 [Stephen Henson]
1020
1021 *) Segmentation fault for invalid PSS parameters fix
1022
1023 The signature verification routines will crash with a NULL pointer
1024 dereference if presented with an ASN.1 signature using the RSA PSS
1025 algorithm and invalid parameters. Since these routines are used to verify
1026 certificate signature algorithms this can be used to crash any
1027 certificate verification operation and exploited in a DoS attack. Any
1028 application which performs certificate verification is vulnerable including
1029 OpenSSL clients and servers which enable client authentication.
1030
1031 This issue was was reported to OpenSSL by Brian Carpenter.
1032 (CVE-2015-0208)
1033 [Stephen Henson]
1034
1035 *) ASN.1 structure reuse memory corruption fix
1036
1037 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1038 memory corruption via an invalid write. Such reuse is and has been
1039 strongly discouraged and is believed to be rare.
1040
1041 Applications that parse structures containing CHOICE or ANY DEFINED BY
1042 components may be affected. Certificate parsing (d2i_X509 and related
1043 functions) are however not affected. OpenSSL clients and servers are
1044 not affected.
1045 (CVE-2015-0287)
1046 [Stephen Henson]
1047
1048 *) PKCS7 NULL pointer dereferences fix
1049
1050 The PKCS#7 parsing code does not handle missing outer ContentInfo
1051 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1052 missing content and trigger a NULL pointer dereference on parsing.
1053
1054 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1055 otherwise parse PKCS#7 structures from untrusted sources are
1056 affected. OpenSSL clients and servers are not affected.
1057
1058 This issue was reported to OpenSSL by Michal Zalewski (Google).
1059 (CVE-2015-0289)
1060 [Emilia Käsper]
1061
1062 *) DoS via reachable assert in SSLv2 servers fix
1063
1064 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1065 servers that both support SSLv2 and enable export cipher suites by sending
1066 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1067
1068 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1069 (OpenSSL development team).
1070 (CVE-2015-0293)
1071 [Emilia Käsper]
1072
1073 *) Empty CKE with client auth and DHE fix
1074
1075 If client auth is used then a server can seg fault in the event of a DHE
1076 ciphersuite being selected and a zero length ClientKeyExchange message
1077 being sent by the client. This could be exploited in a DoS attack.
1078 (CVE-2015-1787)
1079 [Matt Caswell]
1080
1081 *) Handshake with unseeded PRNG fix
1082
1083 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1084 with an unseeded PRNG. The conditions are:
1085 - The client is on a platform where the PRNG has not been seeded
1086 automatically, and the user has not seeded manually
1087 - A protocol specific client method version has been used (i.e. not
1088 SSL_client_methodv23)
1089 - A ciphersuite is used that does not require additional random data from
1090 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1091
1092 If the handshake succeeds then the client random that has been used will
1093 have been generated from a PRNG with insufficient entropy and therefore the
1094 output may be predictable.
1095
1096 For example using the following command with an unseeded openssl will
1097 succeed on an unpatched platform:
1098
1099 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1100 (CVE-2015-0285)
1101 [Matt Caswell]
1102
1103 *) Use After Free following d2i_ECPrivatekey error fix
1104
1105 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1106 could cause a use after free condition. This, in turn, could cause a double
1107 free in several private key parsing functions (such as d2i_PrivateKey
1108 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1109 for applications that receive EC private keys from untrusted
1110 sources. This scenario is considered rare.
1111
1112 This issue was discovered by the BoringSSL project and fixed in their
1113 commit 517073cd4b.
1114 (CVE-2015-0209)
1115 [Matt Caswell]
1116
1117 *) X509_to_X509_REQ NULL pointer deref fix
1118
1119 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1120 the certificate key is invalid. This function is rarely used in practice.
1121
1122 This issue was discovered by Brian Carpenter.
1123 (CVE-2015-0288)
1124 [Stephen Henson]
1125
1126 *) Removed the export ciphers from the DEFAULT ciphers
1127 [Kurt Roeckx]
1128
1129 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
1130
1131 *) Change RSA and DH/DSA key generation apps to generate 2048-bit
1132 keys by default.
1133 [Kurt Roeckx]
1134
1135 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
1136 ARMv5 through ARMv8, as opposite to "locking" it to single one.
1137 So far those who have to target multiple plaforms would compromise
1138 and argue that binary targeting say ARMv5 would still execute on
1139 ARMv8. "Universal" build resolves this compromise by providing
1140 near-optimal performance even on newer platforms.
1141 [Andy Polyakov]
1142
1143 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
1144 (other platforms pending).
1145 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
1146
1147 *) Add support for the SignedCertificateTimestampList certificate and
1148 OCSP response extensions from RFC6962.
1149 [Rob Stradling]
1150
1151 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1152 for corner cases. (Certain input points at infinity could lead to
1153 bogus results, with non-infinity inputs mapped to infinity too.)
1154 [Bodo Moeller]
1155
1156 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
1157 This covers AES, SHA256/512 and GHASH. "Initial" means that most
1158 common cases are optimized and there still is room for further
1159 improvements. Vector Permutation AES for Altivec is also added.
1160 [Andy Polyakov]
1161
1162 *) Add support for little-endian ppc64 Linux target.
1163 [Marcelo Cerri (IBM)]
1164
1165 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
1166 SHA1, SHA256 and GHASH. "Initial" means that most common cases
1167 are optimized and there still is room for further improvements.
1168 Both 32- and 64-bit modes are supported.
1169 [Andy Polyakov, Ard Biesheuvel (Linaro)]
1170
1171 *) Improved ARMv7 NEON support.
1172 [Andy Polyakov]
1173
1174 *) Support for SPARC Architecture 2011 crypto extensions, first
1175 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
1176 SHA256/512, MD5, GHASH and modular exponentiation.
1177 [Andy Polyakov, David Miller]
1178
1179 *) Accelerated modular exponentiation for Intel processors, a.k.a.
1180 RSAZ.
1181 [Shay Gueron & Vlad Krasnov (Intel Corp)]
1182
1183 *) Support for new and upcoming Intel processors, including AVX2,
1184 BMI and SHA ISA extensions. This includes additional "stitched"
1185 implementations, AESNI-SHA256 and GCM, and multi-buffer support
1186 for TLS encrypt.
1187
1188 This work was sponsored by Intel Corp.
1189 [Andy Polyakov]
1190
1191 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
1192 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
1193 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
1194 [Steve Henson]
1195
1196 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1197 this fixes a limiation in previous versions of OpenSSL.
1198 [Steve Henson]
1199
1200 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1201 MGF1 digest and OAEP label.
1202 [Steve Henson]
1203
1204 *) Add EVP support for key wrapping algorithms, to avoid problems with
1205 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1206 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1207 algorithms and include tests cases.
1208 [Steve Henson]
1209
1210 *) Add functions to allocate and set the fields of an ECDSA_METHOD
1211 structure.
1212 [Douglas E. Engert, Steve Henson]
1213
1214 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
1215 difference in days and seconds between two tm or ASN1_TIME structures.
1216 [Steve Henson]
1217
1218 *) Add -rev test option to s_server to just reverse order of characters
1219 received by client and send back to server. Also prints an abbreviated
1220 summary of the connection parameters.
1221 [Steve Henson]
1222
1223 *) New option -brief for s_client and s_server to print out a brief summary
1224 of connection parameters.
1225 [Steve Henson]
1226
1227 *) Add callbacks for arbitrary TLS extensions.
1228 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
1229
1230 *) New option -crl_download in several openssl utilities to download CRLs
1231 from CRLDP extension in certificates.
1232 [Steve Henson]
1233
1234 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
1235 [Steve Henson]
1236
1237 *) New function X509_CRL_diff to generate a delta CRL from the difference
1238 of two full CRLs. Add support to "crl" utility.
1239 [Steve Henson]
1240
1241 *) New functions to set lookup_crls function and to retrieve
1242 X509_STORE from X509_STORE_CTX.
1243 [Steve Henson]
1244
1245 *) Print out deprecated issuer and subject unique ID fields in
1246 certificates.
1247 [Steve Henson]
1248
1249 *) Extend OCSP I/O functions so they can be used for simple general purpose
1250 HTTP as well as OCSP. New wrapper function which can be used to download
1251 CRLs using the OCSP API.
1252 [Steve Henson]
1253
1254 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
1255 [Steve Henson]
1256
1257 *) SSL_CONF* functions. These provide a common framework for application
1258 configuration using configuration files or command lines.
1259 [Steve Henson]
1260
1261 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
1262 message callback and prints the results. Needs compile time option
1263 "enable-ssl-trace". New options to s_client and s_server to enable
1264 tracing.
1265 [Steve Henson]
1266
1267 *) New ctrl and macro to retrieve supported points extensions.
1268 Print out extension in s_server and s_client.
1269 [Steve Henson]
1270
1271 *) New functions to retrieve certificate signature and signature
1272 OID NID.
1273 [Steve Henson]
1274
1275 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
1276 client to OpenSSL.
1277 [Steve Henson]
1278
1279 *) New Suite B modes for TLS code. These use and enforce the requirements
1280 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
1281 only use Suite B curves. The Suite B modes can be set by using the
1282 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
1283 [Steve Henson]
1284
1285 *) New chain verification flags for Suite B levels of security. Check
1286 algorithms are acceptable when flags are set in X509_verify_cert.
1287 [Steve Henson]
1288
1289 *) Make tls1_check_chain return a set of flags indicating checks passed
1290 by a certificate chain. Add additional tests to handle client
1291 certificates: checks for matching certificate type and issuer name
1292 comparison.
1293 [Steve Henson]
1294
1295 *) If an attempt is made to use a signature algorithm not in the peer
1296 preference list abort the handshake. If client has no suitable
1297 signature algorithms in response to a certificate request do not
1298 use the certificate.
1299 [Steve Henson]
1300
1301 *) If server EC tmp key is not in client preference list abort handshake.
1302 [Steve Henson]
1303
1304 *) Add support for certificate stores in CERT structure. This makes it
1305 possible to have different stores per SSL structure or one store in
1306 the parent SSL_CTX. Include distint stores for certificate chain
1307 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
1308 to build and store a certificate chain in CERT structure: returing
1309 an error if the chain cannot be built: this will allow applications
1310 to test if a chain is correctly configured.
1311
1312 Note: if the CERT based stores are not set then the parent SSL_CTX
1313 store is used to retain compatibility with existing behaviour.
1314
1315 [Steve Henson]
1316
1317 *) New function ssl_set_client_disabled to set a ciphersuite disabled
1318 mask based on the current session, check mask when sending client
1319 hello and checking the requested ciphersuite.
1320 [Steve Henson]
1321
1322 *) New ctrls to retrieve and set certificate types in a certificate
1323 request message. Print out received values in s_client. If certificate
1324 types is not set with custom values set sensible values based on
1325 supported signature algorithms.
1326 [Steve Henson]
1327
1328 *) Support for distinct client and server supported signature algorithms.
1329 [Steve Henson]
1330
1331 *) Add certificate callback. If set this is called whenever a certificate
1332 is required by client or server. An application can decide which
1333 certificate chain to present based on arbitrary criteria: for example
1334 supported signature algorithms. Add very simple example to s_server.
1335 This fixes many of the problems and restrictions of the existing client
1336 certificate callback: for example you can now clear an existing
1337 certificate and specify the whole chain.
1338 [Steve Henson]
1339
1340 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
1341 the certificate can be used for (if anything). Set valid_flags field
1342 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
1343 to have similar checks in it.
1344
1345 Add new "cert_flags" field to CERT structure and include a "strict mode".
1346 This enforces some TLS certificate requirements (such as only permitting
1347 certificate signature algorithms contained in the supported algorithms
1348 extension) which some implementations ignore: this option should be used
1349 with caution as it could cause interoperability issues.
1350 [Steve Henson]
1351
1352 *) Update and tidy signature algorithm extension processing. Work out
1353 shared signature algorithms based on preferences and peer algorithms
1354 and print them out in s_client and s_server. Abort handshake if no
1355 shared signature algorithms.
1356 [Steve Henson]
1357
1358 *) Add new functions to allow customised supported signature algorithms
1359 for SSL and SSL_CTX structures. Add options to s_client and s_server
1360 to support them.
1361 [Steve Henson]
1362
1363 *) New function SSL_certs_clear() to delete all references to certificates
1364 from an SSL structure. Before this once a certificate had been added
1365 it couldn't be removed.
1366 [Steve Henson]
1367
1368 *) Integrate hostname, email address and IP address checking with certificate
1369 verification. New verify options supporting checking in opensl utility.
1370 [Steve Henson]
1371
1372 *) Fixes and wildcard matching support to hostname and email checking
1373 functions. Add manual page.
1374 [Florian Weimer (Red Hat Product Security Team)]
1375
1376 *) New functions to check a hostname email or IP address against a
1377 certificate. Add options x509 utility to print results of checks against
1378 a certificate.
1379 [Steve Henson]
1380
1381 *) Fix OCSP checking.
1382 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
1383
1384 *) Initial experimental support for explicitly trusted non-root CAs.
1385 OpenSSL still tries to build a complete chain to a root but if an
1386 intermediate CA has a trust setting included that is used. The first
1387 setting is used: whether to trust (e.g., -addtrust option to the x509
1388 utility) or reject.
1389 [Steve Henson]
1390
1391 *) Add -trusted_first option which attempts to find certificates in the
1392 trusted store even if an untrusted chain is also supplied.
1393 [Steve Henson]
1394
1395 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
1396 platform support for Linux and Android.
1397 [Andy Polyakov]
1398
1399 *) Support for linux-x32, ILP32 environment in x86_64 framework.
1400 [Andy Polyakov]
1401
1402 *) Experimental multi-implementation support for FIPS capable OpenSSL.
1403 When in FIPS mode the approved implementations are used as normal,
1404 when not in FIPS mode the internal unapproved versions are used instead.
1405 This means that the FIPS capable OpenSSL isn't forced to use the
1406 (often lower perfomance) FIPS implementations outside FIPS mode.
1407 [Steve Henson]
1408
1409 *) Transparently support X9.42 DH parameters when calling
1410 PEM_read_bio_DHparameters. This means existing applications can handle
1411 the new parameter format automatically.
1412 [Steve Henson]
1413
1414 *) Initial experimental support for X9.42 DH parameter format: mainly
1415 to support use of 'q' parameter for RFC5114 parameters.
1416 [Steve Henson]
1417
1418 *) Add DH parameters from RFC5114 including test data to dhtest.
1419 [Steve Henson]
1420
1421 *) Support for automatic EC temporary key parameter selection. If enabled
1422 the most preferred EC parameters are automatically used instead of
1423 hardcoded fixed parameters. Now a server just has to call:
1424 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
1425 support ECDH and use the most appropriate parameters.
1426 [Steve Henson]
1427
1428 *) Enhance and tidy EC curve and point format TLS extension code. Use
1429 static structures instead of allocation if default values are used.
1430 New ctrls to set curves we wish to support and to retrieve shared curves.
1431 Print out shared curves in s_server. New options to s_server and s_client
1432 to set list of supported curves.
1433 [Steve Henson]
1434
1435 *) New ctrls to retrieve supported signature algorithms and
1436 supported curve values as an array of NIDs. Extend openssl utility
1437 to print out received values.
1438 [Steve Henson]
1439
1440 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
1441 between NIDs and the more common NIST names such as "P-256". Enhance
1442 ecparam utility and ECC method to recognise the NIST names for curves.
1443 [Steve Henson]
1444
1445 *) Enhance SSL/TLS certificate chain handling to support different
1446 chains for each certificate instead of one chain in the parent SSL_CTX.
1447 [Steve Henson]
1448
1449 *) Support for fixed DH ciphersuite client authentication: where both
1450 server and client use DH certificates with common parameters.
1451 [Steve Henson]
1452
1453 *) Support for fixed DH ciphersuites: those requiring DH server
1454 certificates.
1455 [Steve Henson]
1456
1457 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
1458 the certificate.
1459 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
1460 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
1461 X509_CINF_get_signature were reverted post internal team review.
1462
1463 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
1464
1465 *) Build fixes for the Windows and OpenVMS platforms
1466 [Matt Caswell and Richard Levitte]
1467
1468 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
1469
1470 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
1471 message can cause a segmentation fault in OpenSSL due to a NULL pointer
1472 dereference. This could lead to a Denial Of Service attack. Thanks to
1473 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
1474 (CVE-2014-3571)
1475 [Steve Henson]
1476
1477 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
1478 dtls1_buffer_record function under certain conditions. In particular this
1479 could occur if an attacker sent repeated DTLS records with the same
1480 sequence number but for the next epoch. The memory leak could be exploited
1481 by an attacker in a Denial of Service attack through memory exhaustion.
1482 Thanks to Chris Mueller for reporting this issue.
1483 (CVE-2015-0206)
1484 [Matt Caswell]
1485
1486 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
1487 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
1488 method would be set to NULL which could later result in a NULL pointer
1489 dereference. Thanks to Frank Schmirler for reporting this issue.
1490 (CVE-2014-3569)
1491 [Kurt Roeckx]
1492
1493 *) Abort handshake if server key exchange message is omitted for ephemeral
1494 ECDH ciphersuites.
1495
1496 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
1497 reporting this issue.
1498 (CVE-2014-3572)
1499 [Steve Henson]
1500
1501 *) Remove non-export ephemeral RSA code on client and server. This code
1502 violated the TLS standard by allowing the use of temporary RSA keys in
1503 non-export ciphersuites and could be used by a server to effectively
1504 downgrade the RSA key length used to a value smaller than the server
1505 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
1506 INRIA or reporting this issue.
1507 (CVE-2015-0204)
1508 [Steve Henson]
1509
1510 *) Fixed issue where DH client certificates are accepted without verification.
1511 An OpenSSL server will accept a DH certificate for client authentication
1512 without the certificate verify message. This effectively allows a client to
1513 authenticate without the use of a private key. This only affects servers
1514 which trust a client certificate authority which issues certificates
1515 containing DH keys: these are extremely rare and hardly ever encountered.
1516 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
1517 this issue.
1518 (CVE-2015-0205)
1519 [Steve Henson]
1520
1521 *) Ensure that the session ID context of an SSL is updated when its
1522 SSL_CTX is updated via SSL_set_SSL_CTX.
1523
1524 The session ID context is typically set from the parent SSL_CTX,
1525 and can vary with the CTX.
1526 [Adam Langley]
1527
1528 *) Fix various certificate fingerprint issues.
1529
1530 By using non-DER or invalid encodings outside the signed portion of a
1531 certificate the fingerprint can be changed without breaking the signature.
1532 Although no details of the signed portion of the certificate can be changed
1533 this can cause problems with some applications: e.g. those using the
1534 certificate fingerprint for blacklists.
1535
1536 1. Reject signatures with non zero unused bits.
1537
1538 If the BIT STRING containing the signature has non zero unused bits reject
1539 the signature. All current signature algorithms require zero unused bits.
1540
1541 2. Check certificate algorithm consistency.
1542
1543 Check the AlgorithmIdentifier inside TBS matches the one in the
1544 certificate signature. NB: this will result in signature failure
1545 errors for some broken certificates.
1546
1547 Thanks to Konrad Kraszewski from Google for reporting this issue.
1548
1549 3. Check DSA/ECDSA signatures use DER.
1550
1551 Reencode DSA/ECDSA signatures and compare with the original received
1552 signature. Return an error if there is a mismatch.
1553
1554 This will reject various cases including garbage after signature
1555 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
1556 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
1557 (negative or with leading zeroes).
1558
1559 Further analysis was conducted and fixes were developed by Stephen Henson
1560 of the OpenSSL core team.
1561
1562 (CVE-2014-8275)
1563 [Steve Henson]
1564
1565 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
1566 results on some platforms, including x86_64. This bug occurs at random
1567 with a very low probability, and is not known to be exploitable in any
1568 way, though its exact impact is difficult to determine. Thanks to Pieter
1569 Wuille (Blockstream) who reported this issue and also suggested an initial
1570 fix. Further analysis was conducted by the OpenSSL development team and
1571 Adam Langley of Google. The final fix was developed by Andy Polyakov of
1572 the OpenSSL core team.
1573 (CVE-2014-3570)
1574 [Andy Polyakov]
1575
1576 *) Do not resume sessions on the server if the negotiated protocol
1577 version does not match the session's version. Resuming with a different
1578 version, while not strictly forbidden by the RFC, is of questionable
1579 sanity and breaks all known clients.
1580 [David Benjamin, Emilia Käsper]
1581
1582 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
1583 early CCS messages during renegotiation. (Note that because
1584 renegotiation is encrypted, this early CCS was not exploitable.)
1585 [Emilia Käsper]
1586
1587 *) Tighten client-side session ticket handling during renegotiation:
1588 ensure that the client only accepts a session ticket if the server sends
1589 the extension anew in the ServerHello. Previously, a TLS client would
1590 reuse the old extension state and thus accept a session ticket if one was
1591 announced in the initial ServerHello.
1592
1593 Similarly, ensure that the client requires a session ticket if one
1594 was advertised in the ServerHello. Previously, a TLS client would
1595 ignore a missing NewSessionTicket message.
1596 [Emilia Käsper]
1597
1598 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
1599
1600 *) SRTP Memory Leak.
1601
1602 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
1603 sends a carefully crafted handshake message, to cause OpenSSL to fail
1604 to free up to 64k of memory causing a memory leak. This could be
1605 exploited in a Denial Of Service attack. This issue affects OpenSSL
1606 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
1607 whether SRTP is used or configured. Implementations of OpenSSL that
1608 have been compiled with OPENSSL_NO_SRTP defined are not affected.
1609
1610 The fix was developed by the OpenSSL team.
1611 (CVE-2014-3513)
1612 [OpenSSL team]
1613
1614 *) Session Ticket Memory Leak.
1615
1616 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
1617 integrity of that ticket is first verified. In the event of a session
1618 ticket integrity check failing, OpenSSL will fail to free memory
1619 causing a memory leak. By sending a large number of invalid session
1620 tickets an attacker could exploit this issue in a Denial Of Service
1621 attack.
1622 (CVE-2014-3567)
1623 [Steve Henson]
1624
1625 *) Build option no-ssl3 is incomplete.
1626
1627 When OpenSSL is configured with "no-ssl3" as a build option, servers
1628 could accept and complete a SSL 3.0 handshake, and clients could be
1629 configured to send them.
1630 (CVE-2014-3568)
1631 [Akamai and the OpenSSL team]
1632
1633 *) Add support for TLS_FALLBACK_SCSV.
1634 Client applications doing fallback retries should call
1635 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
1636 (CVE-2014-3566)
1637 [Adam Langley, Bodo Moeller]
1638
1639 *) Add additional DigestInfo checks.
1640
1641 Reencode DigestInto in DER and check against the original when
1642 verifying RSA signature: this will reject any improperly encoded
1643 DigestInfo structures.
1644
1645 Note: this is a precautionary measure and no attacks are currently known.
1646
1647 [Steve Henson]
1648
1649 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
1650
1651 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
1652 SRP code can be overrun an internal buffer. Add sanity check that
1653 g, A, B < N to SRP code.
1654
1655 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
1656 Group for discovering this issue.
1657 (CVE-2014-3512)
1658 [Steve Henson]
1659
1660 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
1661 TLS 1.0 instead of higher protocol versions when the ClientHello message
1662 is badly fragmented. This allows a man-in-the-middle attacker to force a
1663 downgrade to TLS 1.0 even if both the server and the client support a
1664 higher protocol version, by modifying the client's TLS records.
1665
1666 Thanks to David Benjamin and Adam Langley (Google) for discovering and
1667 researching this issue.
1668 (CVE-2014-3511)
1669 [David Benjamin]
1670
1671 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
1672 to a denial of service attack. A malicious server can crash the client
1673 with a null pointer dereference (read) by specifying an anonymous (EC)DH
1674 ciphersuite and sending carefully crafted handshake messages.
1675
1676 Thanks to Felix Gröbert (Google) for discovering and researching this
1677 issue.
1678 (CVE-2014-3510)
1679 [Emilia Käsper]
1680
1681 *) By sending carefully crafted DTLS packets an attacker could cause openssl
1682 to leak memory. This can be exploited through a Denial of Service attack.
1683 Thanks to Adam Langley for discovering and researching this issue.
1684 (CVE-2014-3507)
1685 [Adam Langley]
1686
1687 *) An attacker can force openssl to consume large amounts of memory whilst
1688 processing DTLS handshake messages. This can be exploited through a
1689 Denial of Service attack.
1690 Thanks to Adam Langley for discovering and researching this issue.
1691 (CVE-2014-3506)
1692 [Adam Langley]
1693
1694 *) An attacker can force an error condition which causes openssl to crash
1695 whilst processing DTLS packets due to memory being freed twice. This
1696 can be exploited through a Denial of Service attack.
1697 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
1698 this issue.
1699 (CVE-2014-3505)
1700 [Adam Langley]
1701
1702 *) If a multithreaded client connects to a malicious server using a resumed
1703 session and the server sends an ec point format extension it could write
1704 up to 255 bytes to freed memory.
1705
1706 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
1707 issue.
1708 (CVE-2014-3509)
1709 [Gabor Tyukasz]
1710
1711 *) A malicious server can crash an OpenSSL client with a null pointer
1712 dereference (read) by specifying an SRP ciphersuite even though it was not
1713 properly negotiated with the client. This can be exploited through a
1714 Denial of Service attack.
1715
1716 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
1717 discovering and researching this issue.
1718 (CVE-2014-5139)
1719 [Steve Henson]
1720
1721 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
1722 X509_name_oneline, X509_name_print_ex et al. to leak some information
1723 from the stack. Applications may be affected if they echo pretty printing
1724 output to the attacker.
1725
1726 Thanks to Ivan Fratric (Google) for discovering this issue.
1727 (CVE-2014-3508)
1728 [Emilia Käsper, and Steve Henson]
1729
1730 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
1731 for corner cases. (Certain input points at infinity could lead to
1732 bogus results, with non-infinity inputs mapped to infinity too.)
1733 [Bodo Moeller]
1734
1735 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
1736
1737 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
1738 handshake can force the use of weak keying material in OpenSSL
1739 SSL/TLS clients and servers.
1740
1741 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
1742 researching this issue. (CVE-2014-0224)
1743 [KIKUCHI Masashi, Steve Henson]
1744
1745 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
1746 OpenSSL DTLS client the code can be made to recurse eventually crashing
1747 in a DoS attack.
1748
1749 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
1750 (CVE-2014-0221)
1751 [Imre Rad, Steve Henson]
1752
1753 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
1754 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
1755 client or server. This is potentially exploitable to run arbitrary
1756 code on a vulnerable client or server.
1757
1758 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
1759 [Jüri Aedla, Steve Henson]
1760
1761 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
1762 are subject to a denial of service attack.
1763
1764 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
1765 this issue. (CVE-2014-3470)
1766 [Felix Gröbert, Ivan Fratric, Steve Henson]
1767
1768 *) Harmonize version and its documentation. -f flag is used to display
1769 compilation flags.
1770 [mancha <mancha1@zoho.com>]
1771
1772 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1773 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1774 [mancha <mancha1@zoho.com>]
1775
1776 *) Fix some double frees. These are not thought to be exploitable.
1777 [mancha <mancha1@zoho.com>]
1778
1779 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
1780
1781 *) A missing bounds check in the handling of the TLS heartbeat extension
1782 can be used to reveal up to 64k of memory to a connected client or
1783 server.
1784
1785 Thanks for Neel Mehta of Google Security for discovering this bug and to
1786 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1787 preparing the fix (CVE-2014-0160)
1788 [Adam Langley, Bodo Moeller]
1789
1790 *) Fix for the attack described in the paper "Recovering OpenSSL
1791 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1792 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1793 http://eprint.iacr.org/2014/140
1794
1795 Thanks to Yuval Yarom and Naomi Benger for discovering this
1796 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1797 [Yuval Yarom and Naomi Benger]
1798
1799 *) TLS pad extension: draft-agl-tls-padding-03
1800
1801 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
1802 TLS client Hello record length value would otherwise be > 255 and
1803 less that 512 pad with a dummy extension containing zeroes so it
1804 is at least 512 bytes long.
1805
1806 [Adam Langley, Steve Henson]
1807
1808 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
1809
1810 *) Fix for TLS record tampering bug. A carefully crafted invalid
1811 handshake could crash OpenSSL with a NULL pointer exception.
1812 Thanks to Anton Johansson for reporting this issues.
1813 (CVE-2013-4353)
1814
1815 *) Keep original DTLS digest and encryption contexts in retransmission
1816 structures so we can use the previous session parameters if they need
1817 to be resent. (CVE-2013-6450)
1818 [Steve Henson]
1819
1820 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
1821 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
1822 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
1823 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
1824 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
1825 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
1826 [Rob Stradling, Adam Langley]
1827
1828 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
1829
1830 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
1831 supporting platforms or when small records were transferred.
1832 [Andy Polyakov, Steve Henson]
1833
1834 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
1835
1836 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1837
1838 This addresses the flaw in CBC record processing discovered by
1839 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1840 at: http://www.isg.rhul.ac.uk/tls/
1841
1842 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1843 Security Group at Royal Holloway, University of London
1844 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1845 Emilia Käsper for the initial patch.
1846 (CVE-2013-0169)
1847 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
1848
1849 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
1850 ciphersuites which can be exploited in a denial of service attack.
1851 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
1852 and detecting this bug and to Wolfgang Ettlinger
1853 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
1854 (CVE-2012-2686)
1855 [Adam Langley]
1856
1857 *) Return an error when checking OCSP signatures when key is NULL.
1858 This fixes a DoS attack. (CVE-2013-0166)
1859 [Steve Henson]
1860
1861 *) Make openssl verify return errors.
1862 [Chris Palmer <palmer@google.com> and Ben Laurie]
1863
1864 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1865 the right response is stapled. Also change SSL_get_certificate()
1866 so it returns the certificate actually sent.
1867 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1868 [Rob Stradling <rob.stradling@comodo.com>]
1869
1870 *) Fix possible deadlock when decoding public keys.
1871 [Steve Henson]
1872
1873 *) Don't use TLS 1.0 record version number in initial client hello
1874 if renegotiating.
1875 [Steve Henson]
1876
1877 Changes between 1.0.1b and 1.0.1c [10 May 2012]
1878
1879 *) Sanity check record length before skipping explicit IV in TLS
1880 1.2, 1.1 and DTLS to fix DoS attack.
1881
1882 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1883 fuzzing as a service testing platform.
1884 (CVE-2012-2333)
1885 [Steve Henson]
1886
1887 *) Initialise tkeylen properly when encrypting CMS messages.
1888 Thanks to Solar Designer of Openwall for reporting this issue.
1889 [Steve Henson]
1890
1891 *) In FIPS mode don't try to use composite ciphers as they are not
1892 approved.
1893 [Steve Henson]
1894
1895 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
1896
1897 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
1898 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
1899 mean any application compiled against OpenSSL 1.0.0 headers setting
1900 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
1901 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
1902 0x10000000L Any application which was previously compiled against
1903 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
1904 will need to be recompiled as a result. Letting be results in
1905 inability to disable specifically TLS 1.1 and in client context,
1906 in unlike event, limit maximum offered version to TLS 1.0 [see below].
1907 [Steve Henson]
1908
1909 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
1910 disable just protocol X, but all protocols above X *if* there are
1911 protocols *below* X still enabled. In more practical terms it means
1912 that if application wants to disable TLS1.0 in favor of TLS1.1 and
1913 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
1914 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
1915 client side.
1916 [Andy Polyakov]
1917
1918 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
1919
1920 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1921 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1922 in CRYPTO_realloc_clean.
1923
1924 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1925 issue and to Adam Langley <agl@chromium.org> for fixing it.
1926 (CVE-2012-2110)
1927 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1928
1929 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
1930 [Adam Langley]
1931
1932 *) Workarounds for some broken servers that "hang" if a client hello
1933 record length exceeds 255 bytes.
1934
1935 1. Do not use record version number > TLS 1.0 in initial client
1936 hello: some (but not all) hanging servers will now work.
1937 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
1938 the number of ciphers sent in the client hello. This should be
1939 set to an even number, such as 50, for example by passing:
1940 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
1941 Most broken servers should now work.
1942 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
1943 TLS 1.2 client support entirely.
1944 [Steve Henson]
1945
1946 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
1947 [Andy Polyakov]
1948
1949 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
1950
1951 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
1952 STRING form instead of a DigestInfo.
1953 [Steve Henson]
1954
1955 *) The format used for MDC2 RSA signatures is inconsistent between EVP
1956 and the RSA_sign/RSA_verify functions. This was made more apparent when
1957 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
1958 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
1959 the correct format in RSA_verify so both forms transparently work.
1960 [Steve Henson]
1961
1962 *) Some servers which support TLS 1.0 can choke if we initially indicate
1963 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
1964 encrypted premaster secret. As a workaround use the maximum pemitted
1965 client version in client hello, this should keep such servers happy
1966 and still work with previous versions of OpenSSL.
1967 [Steve Henson]
1968
1969 *) Add support for TLS/DTLS heartbeats.
1970 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1971
1972 *) Add support for SCTP.
1973 [Robin Seggelmann <seggelmann@fh-muenster.de>]
1974
1975 *) Improved PRNG seeding for VOS.
1976 [Paul Green <Paul.Green@stratus.com>]
1977
1978 *) Extensive assembler packs updates, most notably:
1979
1980 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
1981 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
1982 - x86_64: bit-sliced AES implementation;
1983 - ARM: NEON support, contemporary platforms optimizations;
1984 - s390x: z196 support;
1985 - *: GHASH and GF(2^m) multiplication implementations;
1986
1987 [Andy Polyakov]
1988
1989 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
1990 (removal of unnecessary code)
1991 [Peter Sylvester <peter.sylvester@edelweb.fr>]
1992
1993 *) Add TLS key material exporter from RFC 5705.
1994 [Eric Rescorla]
1995
1996 *) Add DTLS-SRTP negotiation from RFC 5764.
1997 [Eric Rescorla]
1998
1999 *) Add Next Protocol Negotiation,
2000 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2001 disabled with a no-npn flag to config or Configure. Code donated
2002 by Google.
2003 [Adam Langley <agl@google.com> and Ben Laurie]
2004
2005 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2006 NIST-P256, NIST-P521, with constant-time single point multiplication on
2007 typical inputs. Compiler support for the nonstandard type __uint128_t is
2008 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2009 Code made available under Apache License version 2.0.
2010
2011 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2012 line to include this in your build of OpenSSL, and run "make depend" (or
2013 "make update"). This enables the following EC_METHODs:
2014
2015 EC_GFp_nistp224_method()
2016 EC_GFp_nistp256_method()
2017 EC_GFp_nistp521_method()
2018
2019 EC_GROUP_new_by_curve_name() will automatically use these (while
2020 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2021 implementations).
2022 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2023
2024 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2025 all platforms. Move ssize_t definition from e_os.h to the public
2026 header file e_os2.h as it now appears in public header file cms.h
2027 [Steve Henson]
2028
2029 *) New -sigopt option to the ca, req and x509 utilities. Additional
2030 signature parameters can be passed using this option and in
2031 particular PSS.
2032 [Steve Henson]
2033
2034 *) Add RSA PSS signing function. This will generate and set the
2035 appropriate AlgorithmIdentifiers for PSS based on those in the
2036 corresponding EVP_MD_CTX structure. No application support yet.
2037 [Steve Henson]
2038
2039 *) Support for companion algorithm specific ASN1 signing routines.
2040 New function ASN1_item_sign_ctx() signs a pre-initialised
2041 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2042 the appropriate parameters.
2043 [Steve Henson]
2044
2045 *) Add new algorithm specific ASN1 verification initialisation function
2046 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2047 handling will be the same no matter what EVP_PKEY_METHOD is used.
2048 Add a PSS handler to support verification of PSS signatures: checked
2049 against a number of sample certificates.
2050 [Steve Henson]
2051
2052 *) Add signature printing for PSS. Add PSS OIDs.
2053 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2054
2055 *) Add algorithm specific signature printing. An individual ASN1 method
2056 can now print out signatures instead of the standard hex dump.
2057
2058 More complex signatures (e.g. PSS) can print out more meaningful
2059 information. Include DSA version that prints out the signature
2060 parameters r, s.
2061 [Steve Henson]
2062
2063 *) Password based recipient info support for CMS library: implementing
2064 RFC3211.
2065 [Steve Henson]
2066
2067 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2068 neatly separates the code into cipher and PBE sections and is required
2069 for some algorithms that split PBES2 into separate pieces (such as
2070 password based CMS).
2071 [Steve Henson]
2072
2073 *) Session-handling fixes:
2074 - Fix handling of connections that are resuming with a session ID,
2075 but also support Session Tickets.
2076 - Fix a bug that suppressed issuing of a new ticket if the client
2077 presented a ticket with an expired session.
2078 - Try to set the ticket lifetime hint to something reasonable.
2079 - Make tickets shorter by excluding irrelevant information.
2080 - On the client side, don't ignore renewed tickets.
2081 [Adam Langley, Bodo Moeller (Google)]
2082
2083 *) Fix PSK session representation.
2084 [Bodo Moeller]
2085
2086 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2087
2088 This work was sponsored by Intel.
2089 [Andy Polyakov]
2090
2091 *) Add GCM support to TLS library. Some custom code is needed to split
2092 the IV between the fixed (from PRF) and explicit (from TLS record)
2093 portions. This adds all GCM ciphersuites supported by RFC5288 and
2094 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
2095 add a special AESGCM string for GCM only.
2096 [Steve Henson]
2097
2098 *) Expand range of ctrls for AES GCM. Permit setting invocation
2099 field on decrypt and retrieval of invocation field only on encrypt.
2100 [Steve Henson]
2101
2102 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2103 As required by RFC5289 these ciphersuites cannot be used if for
2104 versions of TLS earlier than 1.2.
2105 [Steve Henson]
2106
2107 *) For FIPS capable OpenSSL interpret a NULL default public key method
2108 as unset and return the appopriate default but do *not* set the default.
2109 This means we can return the appopriate method in applications that
2110 swicth between FIPS and non-FIPS modes.
2111 [Steve Henson]
2112
2113 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2114 ENGINE is used then we cannot handle that in the FIPS module so we
2115 keep original code iff non-FIPS operations are allowed.
2116 [Steve Henson]
2117
2118 *) Add -attime option to openssl utilities.
2119 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2120
2121 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2122 [Steve Henson]
2123
2124 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2125 FIPS EC methods unconditionally for now.
2126 [Steve Henson]
2127
2128 *) New build option no-ec2m to disable characteristic 2 code.
2129 [Steve Henson]
2130
2131 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2132 all cases can be covered as some introduce binary incompatibilities.
2133 [Steve Henson]
2134
2135 *) Redirect RSA operations to FIPS module including keygen,
2136 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
2137 [Steve Henson]
2138
2139 *) Add similar low level API blocking to ciphers.
2140 [Steve Henson]
2141
2142 *) Low level digest APIs are not approved in FIPS mode: any attempt
2143 to use these will cause a fatal error. Applications that *really* want
2144 to use them can use the private_* version instead.
2145 [Steve Henson]
2146
2147 *) Redirect cipher operations to FIPS module for FIPS builds.
2148 [Steve Henson]
2149
2150 *) Redirect digest operations to FIPS module for FIPS builds.
2151 [Steve Henson]
2152
2153 *) Update build system to add "fips" flag which will link in fipscanister.o
2154 for static and shared library builds embedding a signature if needed.
2155 [Steve Henson]
2156
2157 *) Output TLS supported curves in preference order instead of numerical
2158 order. This is currently hardcoded for the highest order curves first.
2159 This should be configurable so applications can judge speed vs strength.
2160 [Steve Henson]
2161
2162 *) Add TLS v1.2 server support for client authentication.
2163 [Steve Henson]
2164
2165 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
2166 and enable MD5.
2167 [Steve Henson]
2168
2169 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
2170 FIPS modules versions.
2171 [Steve Henson]
2172
2173 *) Add TLS v1.2 client side support for client authentication. Keep cache
2174 of handshake records longer as we don't know the hash algorithm to use
2175 until after the certificate request message is received.
2176 [Steve Henson]
2177
2178 *) Initial TLS v1.2 client support. Add a default signature algorithms
2179 extension including all the algorithms we support. Parse new signature
2180 format in client key exchange. Relax some ECC signing restrictions for
2181 TLS v1.2 as indicated in RFC5246.
2182 [Steve Henson]
2183
2184 *) Add server support for TLS v1.2 signature algorithms extension. Switch
2185 to new signature format when needed using client digest preference.
2186 All server ciphersuites should now work correctly in TLS v1.2. No client
2187 support yet and no support for client certificates.
2188 [Steve Henson]
2189
2190 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
2191 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
2192 ciphersuites. At present only RSA key exchange ciphersuites work with
2193 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
2194 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
2195 and version checking.
2196 [Steve Henson]
2197
2198 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
2199 with this defined it will not be affected by any changes to ssl internal
2200 structures. Add several utility functions to allow openssl application
2201 to work with OPENSSL_NO_SSL_INTERN defined.
2202 [Steve Henson]
2203
2204 *) A long standing patch to add support for SRP from EdelWeb (Peter
2205 Sylvester and Christophe Renou) was integrated.
2206 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
2207 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
2208 Ben Laurie]
2209
2210 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
2211 [Steve Henson]
2212
2213 *) Permit abbreviated handshakes when renegotiating using the function
2214 SSL_renegotiate_abbreviated().
2215 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2216
2217 *) Add call to ENGINE_register_all_complete() to
2218 ENGINE_load_builtin_engines(), so some implementations get used
2219 automatically instead of needing explicit application support.
2220 [Steve Henson]
2221
2222 *) Add support for TLS key exporter as described in RFC5705.
2223 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
2224
2225 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
2226 a few changes are required:
2227
2228 Add SSL_OP_NO_TLSv1_1 flag.
2229 Add TLSv1_1 methods.
2230 Update version checking logic to handle version 1.1.
2231 Add explicit IV handling (ported from DTLS code).
2232 Add command line options to s_client/s_server.
2233 [Steve Henson]
2234
2235 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
2236
2237 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2238 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2239 content decryption and always return the same error. Note: this attack
2240 needs on average 2^20 messages so it only affects automated senders. The
2241 old behaviour can be reenabled in the CMS code by setting the
2242 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2243 an MMA defence is not necessary.
2244 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2245 this issue. (CVE-2012-0884)
2246 [Steve Henson]
2247
2248 *) Fix CVE-2011-4619: make sure we really are receiving a
2249 client hello before rejecting multiple SGC restarts. Thanks to
2250 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2251 [Steve Henson]
2252
2253 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
2254
2255 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2256 Thanks to Antonio Martin, Enterprise Secure Access Research and
2257 Development, Cisco Systems, Inc. for discovering this bug and
2258 preparing a fix. (CVE-2012-0050)
2259 [Antonio Martin]
2260
2261 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
2262
2263 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2264 of the Vaudenay padding oracle attack on CBC mode encryption
2265 which enables an efficient plaintext recovery attack against
2266 the OpenSSL implementation of DTLS. Their attack exploits timing
2267 differences arising during decryption processing. A research
2268 paper describing this attack can be found at:
2269 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2270 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2271 Security Group at Royal Holloway, University of London
2272 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2273 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2274 for preparing the fix. (CVE-2011-4108)
2275 [Robin Seggelmann, Michael Tuexen]
2276
2277 *) Clear bytes used for block padding of SSL 3.0 records.
2278 (CVE-2011-4576)
2279 [Adam Langley (Google)]
2280
2281 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2282 Kadianakis <desnacked@gmail.com> for discovering this issue and
2283 Adam Langley for preparing the fix. (CVE-2011-4619)
2284 [Adam Langley (Google)]
2285
2286 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
2287 [Andrey Kulikov <amdeich@gmail.com>]
2288
2289 *) Prevent malformed RFC3779 data triggering an assertion failure.
2290 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2291 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2292 [Rob Austein <sra@hactrn.net>]
2293
2294 *) Improved PRNG seeding for VOS.
2295 [Paul Green <Paul.Green@stratus.com>]
2296
2297 *) Fix ssl_ciph.c set-up race.
2298 [Adam Langley (Google)]
2299
2300 *) Fix spurious failures in ecdsatest.c.
2301 [Emilia Käsper (Google)]
2302
2303 *) Fix the BIO_f_buffer() implementation (which was mixing different
2304 interpretations of the '..._len' fields).
2305 [Adam Langley (Google)]
2306
2307 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2308 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2309 threads won't reuse the same blinding coefficients.
2310
2311 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2312 lock to call BN_BLINDING_invert_ex, and avoids one use of
2313 BN_BLINDING_update for each BN_BLINDING structure (previously,
2314 the last update always remained unused).
2315 [Emilia Käsper (Google)]
2316
2317 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
2318 [Bob Buckholz (Google)]
2319
2320 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
2321
2322 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
2323 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
2324 [Kaspar Brand <ossl@velox.ch>]
2325
2326 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2327 for multi-threaded use of ECDH. (CVE-2011-3210)
2328 [Adam Langley (Google)]
2329
2330 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2331 [Bodo Moeller]
2332
2333 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
2334 signature public key algorithm by using OID xref utilities instead.
2335 Before this you could only use some ECC ciphersuites with SHA1 only.
2336 [Steve Henson]
2337
2338 *) Add protection against ECDSA timing attacks as mentioned in the paper
2339 by Billy Bob Brumley and Nicola Tuveri, see:
2340
2341 http://eprint.iacr.org/2011/232.pdf
2342
2343 [Billy Bob Brumley and Nicola Tuveri]
2344
2345 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
2346
2347 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2348 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2349
2350 *) Fix bug in string printing code: if *any* escaping is enabled we must
2351 escape the escape character (backslash) or the resulting string is
2352 ambiguous.
2353 [Steve Henson]
2354
2355 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
2356
2357 *) Disable code workaround for ancient and obsolete Netscape browsers
2358 and servers: an attacker can use it in a ciphersuite downgrade attack.
2359 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2360 [Steve Henson]
2361
2362 *) Fixed J-PAKE implementation error, originally discovered by
2363 Sebastien Martini, further info and confirmation from Stefan
2364 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2365 [Ben Laurie]
2366
2367 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
2368
2369 *) Fix extension code to avoid race conditions which can result in a buffer
2370 overrun vulnerability: resumed sessions must not be modified as they can
2371 be shared by multiple threads. CVE-2010-3864
2372 [Steve Henson]
2373
2374 *) Fix WIN32 build system to correctly link an ENGINE directory into
2375 a DLL.
2376 [Steve Henson]
2377
2378 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
2379
2380 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
2381 (CVE-2010-1633)
2382 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
2383
2384 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
2385
2386 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
2387 context. The operation can be customised via the ctrl mechanism in
2388 case ENGINEs want to include additional functionality.
2389 [Steve Henson]
2390
2391 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
2392 [Steve Henson]
2393
2394 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
2395 output hashes compatible with older versions of OpenSSL.
2396 [Willy Weisz <weisz@vcpc.univie.ac.at>]
2397
2398 *) Fix compression algorithm handling: if resuming a session use the
2399 compression algorithm of the resumed session instead of determining
2400 it from client hello again. Don't allow server to change algorithm.
2401 [Steve Henson]
2402
2403 *) Add load_crls() function to apps tidying load_certs() too. Add option
2404 to verify utility to allow additional CRLs to be included.
2405 [Steve Henson]
2406
2407 *) Update OCSP request code to permit adding custom headers to the request:
2408 some responders need this.
2409 [Steve Henson]
2410
2411 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
2412 correctly.
2413 [Julia Lawall <julia@diku.dk>]
2414
2415 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
2416 needlessly dereferenced structures, used obsolete functions and
2417 didn't handle all updated verify codes correctly.
2418 [Steve Henson]
2419
2420 *) Disable MD2 in the default configuration.
2421 [Steve Henson]
2422
2423 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
2424 indicate the initial BIO being pushed or popped. This makes it possible
2425 to determine whether the BIO is the one explicitly called or as a result
2426 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
2427 it handles reference counts correctly and doesn't zero out the I/O bio
2428 when it is not being explicitly popped. WARNING: applications which
2429 included workarounds for the old buggy behaviour will need to be modified
2430 or they could free up already freed BIOs.
2431 [Steve Henson]
2432
2433 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
2434 renaming to all platforms (within the 0.9.8 branch, this was
2435 done conditionally on Netware platforms to avoid a name clash).
2436 [Guenter <lists@gknw.net>]
2437
2438 *) Add ECDHE and PSK support to DTLS.
2439 [Michael Tuexen <tuexen@fh-muenster.de>]
2440
2441 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
2442 be used on C++.
2443 [Steve Henson]
2444
2445 *) Add "missing" function EVP_MD_flags() (without this the only way to
2446 retrieve a digest flags is by accessing the structure directly. Update
2447 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
2448 or cipher is registered as in the "from" argument. Print out all
2449 registered digests in the dgst usage message instead of manually
2450 attempting to work them out.
2451 [Steve Henson]
2452
2453 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
2454 this allows the use of compression and extensions. Change default cipher
2455 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
2456 by default unless an application cipher string requests it.
2457 [Steve Henson]
2458
2459 *) Alter match criteria in PKCS12_parse(). It used to try to use local
2460 key ids to find matching certificates and keys but some PKCS#12 files
2461 don't follow the (somewhat unwritten) rules and this strategy fails.
2462 Now just gather all certificates together and the first private key
2463 then look for the first certificate that matches the key.
2464 [Steve Henson]
2465
2466 *) Support use of registered digest and cipher names for dgst and cipher
2467 commands instead of having to add each one as a special case. So now
2468 you can do:
2469
2470 openssl sha256 foo
2471
2472 as well as:
2473
2474 openssl dgst -sha256 foo
2475
2476 and this works for ENGINE based algorithms too.
2477
2478 [Steve Henson]
2479
2480 *) Update Gost ENGINE to support parameter files.
2481 [Victor B. Wagner <vitus@cryptocom.ru>]
2482
2483 *) Support GeneralizedTime in ca utility.
2484 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
2485
2486 *) Enhance the hash format used for certificate directory links. The new
2487 form uses the canonical encoding (meaning equivalent names will work
2488 even if they aren't identical) and uses SHA1 instead of MD5. This form
2489 is incompatible with the older format and as a result c_rehash should
2490 be used to rebuild symbolic links.
2491 [Steve Henson]
2492
2493 *) Make PKCS#8 the default write format for private keys, replacing the
2494 traditional format. This form is standardised, more secure and doesn't
2495 include an implicit MD5 dependency.
2496 [Steve Henson]
2497
2498 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
2499 committed to OpenSSL should pass this lot as a minimum.
2500 [Steve Henson]
2501
2502 *) Add session ticket override functionality for use by EAP-FAST.
2503 [Jouni Malinen <j@w1.fi>]
2504
2505 *) Modify HMAC functions to return a value. Since these can be implemented
2506 in an ENGINE errors can occur.
2507 [Steve Henson]
2508
2509 *) Type-checked OBJ_bsearch_ex.
2510 [Ben Laurie]
2511
2512 *) Type-checked OBJ_bsearch. Also some constification necessitated
2513 by type-checking. Still to come: TXT_DB, bsearch(?),
2514 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
2515 CONF_VALUE.
2516 [Ben Laurie]
2517
2518 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
2519 seconds to a tm structure directly, instead of going through OS
2520 specific date routines. This avoids any issues with OS routines such
2521 as the year 2038 bug. New *_adj() functions for ASN1 time structures
2522 and X509_time_adj_ex() to cover the extended range. The existing
2523 X509_time_adj() is still usable and will no longer have any date issues.
2524 [Steve Henson]
2525
2526 *) Delta CRL support. New use deltas option which will attempt to locate
2527 and search any appropriate delta CRLs available.
2528
2529 This work was sponsored by Google.
2530 [Steve Henson]
2531
2532 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
2533 code and add additional score elements. Validate alternate CRL paths
2534 as part of the CRL checking and indicate a new error "CRL path validation
2535 error" in this case. Applications wanting additional details can use
2536 the verify callback and check the new "parent" field. If this is not
2537 NULL CRL path validation is taking place. Existing applications wont
2538 see this because it requires extended CRL support which is off by
2539 default.
2540
2541 This work was sponsored by Google.
2542 [Steve Henson]
2543
2544 *) Support for freshest CRL extension.
2545
2546 This work was sponsored by Google.
2547 [Steve Henson]
2548
2549 *) Initial indirect CRL support. Currently only supported in the CRLs
2550 passed directly and not via lookup. Process certificate issuer
2551 CRL entry extension and lookup CRL entries by bother issuer name
2552 and serial number. Check and process CRL issuer entry in IDP extension.
2553
2554 This work was sponsored by Google.
2555 [Steve Henson]
2556
2557 *) Add support for distinct certificate and CRL paths. The CRL issuer
2558 certificate is validated separately in this case. Only enabled if
2559 an extended CRL support flag is set: this flag will enable additional
2560 CRL functionality in future.
2561
2562 This work was sponsored by Google.
2563 [Steve Henson]
2564
2565 *) Add support for policy mappings extension.
2566
2567 This work was sponsored by Google.
2568 [Steve Henson]
2569
2570 *) Fixes to pathlength constraint, self issued certificate handling,
2571 policy processing to align with RFC3280 and PKITS tests.
2572
2573 This work was sponsored by Google.
2574 [Steve Henson]
2575
2576 *) Support for name constraints certificate extension. DN, email, DNS
2577 and URI types are currently supported.
2578
2579 This work was sponsored by Google.
2580 [Steve Henson]
2581
2582 *) To cater for systems that provide a pointer-based thread ID rather
2583 than numeric, deprecate the current numeric thread ID mechanism and
2584 replace it with a structure and associated callback type. This
2585 mechanism allows a numeric "hash" to be extracted from a thread ID in
2586 either case, and on platforms where pointers are larger than 'long',
2587 mixing is done to help ensure the numeric 'hash' is usable even if it
2588 can't be guaranteed unique. The default mechanism is to use "&errno"
2589 as a pointer-based thread ID to distinguish between threads.
2590
2591 Applications that want to provide their own thread IDs should now use
2592 CRYPTO_THREADID_set_callback() to register a callback that will call
2593 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
2594
2595 Note that ERR_remove_state() is now deprecated, because it is tied
2596 to the assumption that thread IDs are numeric. ERR_remove_state(0)
2597 to free the current thread's error state should be replaced by
2598 ERR_remove_thread_state(NULL).
2599
2600 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
2601 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
2602 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
2603 application was previously providing a numeric thread callback that
2604 was inappropriate for distinguishing threads, then uniqueness might
2605 have been obtained with &errno that happened immediately in the
2606 intermediate development versions of OpenSSL; this is no longer the
2607 case, the numeric thread callback will now override the automatic use
2608 of &errno.)
2609 [Geoff Thorpe, with help from Bodo Moeller]
2610
2611 *) Initial support for different CRL issuing certificates. This covers a
2612 simple case where the self issued certificates in the chain exist and
2613 the real CRL issuer is higher in the existing chain.
2614
2615 This work was sponsored by Google.
2616 [Steve Henson]
2617
2618 *) Removed effectively defunct crypto/store from the build.
2619 [Ben Laurie]
2620
2621 *) Revamp of STACK to provide stronger type-checking. Still to come:
2622 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
2623 ASN1_STRING, CONF_VALUE.
2624 [Ben Laurie]
2625
2626 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
2627 RAM on SSL connections. This option can save about 34k per idle SSL.
2628 [Nick Mathewson]
2629
2630 *) Revamp of LHASH to provide stronger type-checking. Still to come:
2631 STACK, TXT_DB, bsearch, qsort.
2632 [Ben Laurie]
2633
2634 *) Initial support for Cryptographic Message Syntax (aka CMS) based
2635 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
2636 support for data, signedData, compressedData, digestedData and
2637 encryptedData, envelopedData types included. Scripts to check against
2638 RFC4134 examples draft and interop and consistency checks of many
2639 content types and variants.
2640 [Steve Henson]
2641
2642 *) Add options to enc utility to support use of zlib compression BIO.
2643 [Steve Henson]
2644
2645 *) Extend mk1mf to support importing of options and assembly language
2646 files from Configure script, currently only included in VC-WIN32.
2647 The assembly language rules can now optionally generate the source
2648 files from the associated perl scripts.
2649 [Steve Henson]
2650
2651 *) Implement remaining functionality needed to support GOST ciphersuites.
2652 Interop testing has been performed using CryptoPro implementations.
2653 [Victor B. Wagner <vitus@cryptocom.ru>]
2654
2655 *) s390x assembler pack.
2656 [Andy Polyakov]
2657
2658 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
2659 "family."
2660 [Andy Polyakov]
2661
2662 *) Implement Opaque PRF Input TLS extension as specified in
2663 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
2664 official specification yet and no extension type assignment by
2665 IANA exists, this extension (for now) will have to be explicitly
2666 enabled when building OpenSSL by providing the extension number
2667 to use. For example, specify an option
2668
2669 -DTLSEXT_TYPE_opaque_prf_input=0x9527
2670
2671 to the "config" or "Configure" script to enable the extension,
2672 assuming extension number 0x9527 (which is a completely arbitrary
2673 and unofficial assignment based on the MD5 hash of the Internet
2674 Draft). Note that by doing so, you potentially lose
2675 interoperability with other TLS implementations since these might
2676 be using the same extension number for other purposes.
2677
2678 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
2679 opaque PRF input value to use in the handshake. This will create
2680 an interal copy of the length-'len' string at 'src', and will
2681 return non-zero for success.
2682
2683 To get more control and flexibility, provide a callback function
2684 by using
2685
2686 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
2687 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
2688
2689 where
2690
2691 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
2692 void *arg;
2693
2694 Callback function 'cb' will be called in handshakes, and is
2695 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
2696 Argument 'arg' is for application purposes (the value as given to
2697 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
2698 be provided to the callback function). The callback function
2699 has to return non-zero to report success: usually 1 to use opaque
2700 PRF input just if possible, or 2 to enforce use of the opaque PRF
2701 input. In the latter case, the library will abort the handshake
2702 if opaque PRF input is not successfully negotiated.
2703
2704 Arguments 'peerinput' and 'len' given to the callback function
2705 will always be NULL and 0 in the case of a client. A server will
2706 see the client's opaque PRF input through these variables if
2707 available (NULL and 0 otherwise). Note that if the server
2708 provides an opaque PRF input, the length must be the same as the
2709 length of the client's opaque PRF input.
2710
2711 Note that the callback function will only be called when creating
2712 a new session (session resumption can resume whatever was
2713 previously negotiated), and will not be called in SSL 2.0
2714 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
2715 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
2716 for applications that need to enforce opaque PRF input.
2717
2718 [Bodo Moeller]
2719
2720 *) Update ssl code to support digests other than SHA1+MD5 for handshake
2721 MAC.
2722
2723 [Victor B. Wagner <vitus@cryptocom.ru>]
2724
2725 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2726 RFC4507bis. The encrypted ticket format is an encrypted encoded
2727 SSL_SESSION structure, that way new session features are automatically
2728 supported.
2729
2730 If a client application caches session in an SSL_SESSION structure
2731 support is transparent because tickets are now stored in the encoded
2732 SSL_SESSION.
2733
2734 The SSL_CTX structure automatically generates keys for ticket
2735 protection in servers so again support should be possible
2736 with no application modification.
2737
2738 If a client or server wishes to disable RFC4507 support then the option
2739 SSL_OP_NO_TICKET can be set.
2740
2741 Add a TLS extension debugging callback to allow the contents of any client
2742 or server extensions to be examined.
2743
2744 This work was sponsored by Google.
2745 [Steve Henson]
2746
2747 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
2748 OpenSSL should now compile cleanly on gcc 4.2
2749 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
2750
2751 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
2752 support including streaming MAC support: this is required for GOST
2753 ciphersuite support.
2754 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
2755
2756 *) Add option -stream to use PKCS#7 streaming in smime utility. New
2757 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
2758 to output in BER and PEM format.
2759 [Steve Henson]
2760
2761 *) Experimental support for use of HMAC via EVP_PKEY interface. This
2762 allows HMAC to be handled via the EVP_DigestSign*() interface. The
2763 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
2764 ENGINE support for HMAC keys which are unextractable. New -mac and
2765 -macopt options to dgst utility.
2766 [Steve Henson]
2767
2768 *) New option -sigopt to dgst utility. Update dgst to use
2769 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
2770 alternative signing paramaters such as X9.31 or PSS in the dgst
2771 utility.
2772 [Steve Henson]
2773
2774 *) Change ssl_cipher_apply_rule(), the internal function that does
2775 the work each time a ciphersuite string requests enabling
2776 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
2777 removing ("!foo+bar") a class of ciphersuites: Now it maintains
2778 the order of disabled ciphersuites such that those ciphersuites
2779 that most recently went from enabled to disabled not only stay
2780 in order with respect to each other, but also have higher priority
2781 than other disabled ciphersuites the next time ciphersuites are
2782 enabled again.
2783
2784 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
2785 the same ciphersuites as with "HIGH" alone, but in a specific
2786 order where the PSK ciphersuites come first (since they are the
2787 most recently disabled ciphersuites when "HIGH" is parsed).
2788
2789 Also, change ssl_create_cipher_list() (using this new
2790 funcionality) such that between otherwise identical
2791 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
2792 the default order.
2793 [Bodo Moeller]
2794
2795 *) Change ssl_create_cipher_list() so that it automatically
2796 arranges the ciphersuites in reasonable order before starting
2797 to process the rule string. Thus, the definition for "DEFAULT"
2798 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
2799 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
2800 This makes it much easier to arrive at a reasonable default order
2801 in applications for which anonymous ciphers are OK (meaning
2802 that you can't actually use DEFAULT).
2803 [Bodo Moeller; suggested by Victor Duchovni]
2804
2805 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
2806 processing) into multiple integers instead of setting
2807 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
2808 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
2809 (These masks as well as the individual bit definitions are hidden
2810 away into the non-exported interface ssl/ssl_locl.h, so this
2811 change to the definition of the SSL_CIPHER structure shouldn't
2812 affect applications.) This give us more bits for each of these
2813 categories, so there is no longer a need to coagulate AES128 and
2814 AES256 into a single algorithm bit, and to coagulate Camellia128
2815 and Camellia256 into a single algorithm bit, which has led to all
2816 kinds of kludges.
2817
2818 Thus, among other things, the kludge introduced in 0.9.7m and
2819 0.9.8e for masking out AES256 independently of AES128 or masking
2820 out Camellia256 independently of AES256 is not needed here in 0.9.9.
2821
2822 With the change, we also introduce new ciphersuite aliases that
2823 so far were missing: "AES128", "AES256", "CAMELLIA128", and
2824 "CAMELLIA256".
2825 [Bodo Moeller]
2826
2827 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
2828 Use the leftmost N bytes of the signature input if the input is
2829 larger than the prime q (with N being the size in bytes of q).
2830 [Nils Larsch]
2831
2832 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
2833 it yet and it is largely untested.
2834 [Steve Henson]
2835
2836 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
2837 [Nils Larsch]
2838
2839 *) Initial incomplete changes to avoid need for function casts in OpenSSL
2840 some compilers (gcc 4.2 and later) reject their use. Safestack is
2841 reimplemented. Update ASN1 to avoid use of legacy functions.
2842 [Steve Henson]
2843
2844 *) Win32/64 targets are linked with Winsock2.
2845 [Andy Polyakov]
2846
2847 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
2848 to external functions. This can be used to increase CRL handling
2849 efficiency especially when CRLs are very large by (for example) storing
2850 the CRL revoked certificates in a database.
2851 [Steve Henson]
2852
2853 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
2854 new CRLs added to a directory can be used. New command line option
2855 -verify_return_error to s_client and s_server. This causes real errors
2856 to be returned by the verify callback instead of carrying on no matter
2857 what. This reflects the way a "real world" verify callback would behave.
2858 [Steve Henson]
2859
2860 *) GOST engine, supporting several GOST algorithms and public key formats.
2861 Kindly donated by Cryptocom.
2862 [Cryptocom]
2863
2864 *) Partial support for Issuing Distribution Point CRL extension. CRLs
2865 partitioned by DP are handled but no indirect CRL or reason partitioning
2866 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
2867 selected via a scoring technique which handles IDP and AKID in CRLs.
2868 [Steve Henson]
2869
2870 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
2871 will ultimately be used for all verify operations: this will remove the
2872 X509_STORE dependency on certificate verification and allow alternative
2873 lookup methods. X509_STORE based implementations of these two callbacks.
2874 [Steve Henson]
2875
2876 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
2877 Modify get_crl() to find a valid (unexpired) CRL if possible.
2878 [Steve Henson]
2879
2880 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
2881 this would be called X509_CRL_cmp() but that name is already used by
2882 a function that just compares CRL issuer names. Cache several CRL
2883 extensions in X509_CRL structure and cache CRLDP in X509.
2884 [Steve Henson]
2885
2886 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
2887 this maps equivalent X509_NAME structures into a consistent structure.
2888 Name comparison can then be performed rapidly using memcmp().
2889 [Steve Henson]
2890
2891 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
2892 utility.
2893 [Steve Henson]
2894
2895 *) Allow digests to supply their own micalg string for S/MIME type using
2896 the ctrl EVP_MD_CTRL_MICALG.
2897 [Steve Henson]
2898
2899 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
2900 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
2901 ctrl. It can then customise the structure before and/or after signing
2902 if necessary.
2903 [Steve Henson]
2904
2905 *) New function OBJ_add_sigid() to allow application defined signature OIDs
2906 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
2907 to free up any added signature OIDs.
2908 [Steve Henson]
2909
2910 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
2911 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
2912 digest and cipher tables. New options added to openssl utility:
2913 list-message-digest-algorithms and list-cipher-algorithms.
2914 [Steve Henson]
2915
2916 *) Change the array representation of binary polynomials: the list
2917 of degrees of non-zero coefficients is now terminated with -1.
2918 Previously it was terminated with 0, which was also part of the
2919 value; thus, the array representation was not applicable to
2920 polynomials where t^0 has coefficient zero. This change makes
2921 the array representation useful in a more general context.
2922 [Douglas Stebila]
2923
2924 *) Various modifications and fixes to SSL/TLS cipher string
2925 handling. For ECC, the code now distinguishes between fixed ECDH
2926 with RSA certificates on the one hand and with ECDSA certificates
2927 on the other hand, since these are separate ciphersuites. The
2928 unused code for Fortezza ciphersuites has been removed.
2929
2930 For consistency with EDH, ephemeral ECDH is now called "EECDH"
2931 (not "ECDHE"). For consistency with the code for DH
2932 certificates, use of ECDH certificates is now considered ECDH
2933 authentication, not RSA or ECDSA authentication (the latter is
2934 merely the CA's signing algorithm and not actively used in the
2935 protocol).
2936
2937 The temporary ciphersuite alias "ECCdraft" is no longer
2938 available, and ECC ciphersuites are no longer excluded from "ALL"
2939 and "DEFAULT". The following aliases now exist for RFC 4492
2940 ciphersuites, most of these by analogy with the DH case:
2941
2942 kECDHr - ECDH cert, signed with RSA
2943 kECDHe - ECDH cert, signed with ECDSA
2944 kECDH - ECDH cert (signed with either RSA or ECDSA)
2945 kEECDH - ephemeral ECDH
2946 ECDH - ECDH cert or ephemeral ECDH
2947
2948 aECDH - ECDH cert
2949 aECDSA - ECDSA cert
2950 ECDSA - ECDSA cert
2951
2952 AECDH - anonymous ECDH
2953 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
2954
2955 [Bodo Moeller]
2956
2957 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
2958 Use correct micalg parameters depending on digest(s) in signed message.
2959 [Steve Henson]
2960
2961 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
2962 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
2963 [Steve Henson]
2964
2965 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
2966 an engine to register a method. Add ENGINE lookups for methods and
2967 functional reference processing.
2968 [Steve Henson]
2969
2970 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
2971 EVP_{Sign,Verify}* which allow an application to customise the signature
2972 process.
2973 [Steve Henson]
2974
2975 *) New -resign option to smime utility. This adds one or more signers
2976 to an existing PKCS#7 signedData structure. Also -md option to use an
2977 alternative message digest algorithm for signing.
2978 [Steve Henson]
2979
2980 *) Tidy up PKCS#7 routines and add new functions to make it easier to
2981 create PKCS7 structures containing multiple signers. Update smime
2982 application to support multiple signers.
2983 [Steve Henson]
2984
2985 *) New -macalg option to pkcs12 utility to allow setting of an alternative
2986 digest MAC.
2987 [Steve Henson]
2988
2989 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
2990 Reorganize PBE internals to lookup from a static table using NIDs,
2991 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
2992 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
2993 PRF which will be automatically used with PBES2.
2994 [Steve Henson]
2995
2996 *) Replace the algorithm specific calls to generate keys in "req" with the
2997 new API.
2998 [Steve Henson]
2999
3000 *) Update PKCS#7 enveloped data routines to use new API. This is now
3001 supported by any public key method supporting the encrypt operation. A
3002 ctrl is added to allow the public key algorithm to examine or modify
3003 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3004 a no op.
3005 [Steve Henson]
3006
3007 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3008 a default digest type to use. In most cases this will be SHA1 but some
3009 algorithms (such as GOST) need to specify an alternative digest. The
3010 return value indicates how strong the prefernce is 1 means optional and
3011 2 is mandatory (that is it is the only supported type). Modify
3012 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3013 use the default md. Update openssl utilities to use the default digest
3014 type for signing if it is not explicitly indicated.
3015 [Steve Henson]
3016
3017 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3018 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3019 signing method from the key type. This effectively removes the link
3020 between digests and public key types.
3021 [Steve Henson]
3022
3023 *) Add an OID cross reference table and utility functions. Its purpose is to
3024 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3025 rsaEncryption. This will allow some of the algorithm specific hackery
3026 needed to use the correct OID to be removed.
3027 [Steve Henson]
3028
3029 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3030 structures for PKCS7_sign(). They are now set up by the relevant public
3031 key ASN1 method.
3032 [Steve Henson]
3033
3034 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3035 [Steve Henson]
3036
3037 *) Add support for key derivation (agreement) in the API, DH method and
3038 pkeyutl.
3039 [Steve Henson]
3040
3041 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3042 public and private key formats. As a side effect these add additional
3043 command line functionality not previously available: DSA signatures can be
3044 generated and verified using pkeyutl and DH key support and generation in
3045 pkey, genpkey.
3046 [Steve Henson]
3047
3048 *) BeOS support.
3049 [Oliver Tappe <zooey@hirschkaefer.de>]
3050
3051 *) New make target "install_html_docs" installs HTML renditions of the
3052 manual pages.
3053 [Oliver Tappe <zooey@hirschkaefer.de>]
3054
3055 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
3056 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3057 support key and parameter generation and add initial key generation
3058 functionality for RSA.
3059 [Steve Henson]
3060
3061 *) Add functions for main EVP_PKEY_method operations. The undocumented
3062 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3063 EVP_PKEY_{encrypt,decrypt}_old.
3064 [Steve Henson]
3065
3066 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3067 key API, doesn't do much yet.
3068 [Steve Henson]
3069
3070 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3071 public key algorithms. New option to openssl utility:
3072 "list-public-key-algorithms" to print out info.
3073 [Steve Henson]
3074
3075 *) Implement the Supported Elliptic Curves Extension for
3076 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3077 [Douglas Stebila]
3078
3079 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3080 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3081 [Steve Henson]
3082
3083 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3084 utilities such as rsa, dsa, dsaparam etc except they process any key
3085 type.
3086 [Steve Henson]
3087
3088 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3089 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3090 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3091 structure.
3092 [Steve Henson]
3093
3094 *) Initial support for pluggable public key ASN1.
3095 De-spaghettify the public key ASN1 handling. Move public and private
3096 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3097 algorithm specific handling to a single module within the relevant
3098 algorithm directory. Add functions to allow (near) opaque processing
3099 of public and private key structures.
3100 [Steve Henson]
3101
3102 *) Implement the Supported Point Formats Extension for
3103 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3104 [Douglas Stebila]
3105
3106 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3107 for the psk identity [hint] and the psk callback functions to the
3108 SSL_SESSION, SSL and SSL_CTX structure.
3109
3110 New ciphersuites:
3111 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3112 PSK-AES256-CBC-SHA
3113
3114 New functions:
3115 SSL_CTX_use_psk_identity_hint
3116 SSL_get_psk_identity_hint
3117 SSL_get_psk_identity
3118 SSL_use_psk_identity_hint
3119
3120 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3121
3122 *) Add RFC 3161 compliant time stamp request creation, response generation
3123 and response verification functionality.
3124 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3125
3126 *) Add initial support for TLS extensions, specifically for the server_name
3127 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3128 have new members for a host name. The SSL data structure has an
3129 additional member SSL_CTX *initial_ctx so that new sessions can be
3130 stored in that context to allow for session resumption, even after the
3131 SSL has been switched to a new SSL_CTX in reaction to a client's
3132 server_name extension.
3133
3134 New functions (subject to change):
3135
3136 SSL_get_servername()
3137 SSL_get_servername_type()
3138 SSL_set_SSL_CTX()
3139
3140 New CTRL codes and macros (subject to change):
3141
3142 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3143 - SSL_CTX_set_tlsext_servername_callback()
3144 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3145 - SSL_CTX_set_tlsext_servername_arg()
3146 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3147
3148 openssl s_client has a new '-servername ...' option.
3149
3150 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3151 '-key2 ...', '-servername_fatal' (subject to change). This allows
3152 testing the HostName extension for a specific single host name ('-cert'
3153 and '-key' remain fallbacks for handshakes without HostName
3154 negotiation). If the unrecogninzed_name alert has to be sent, this by
3155 default is a warning; it becomes fatal with the '-servername_fatal'
3156 option.
3157
3158 [Peter Sylvester, Remy Allais, Christophe Renou]
3159
3160 *) Whirlpool hash implementation is added.
3161 [Andy Polyakov]
3162
3163 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
3164 bn(64,32). Because of instruction set limitations it doesn't have
3165 any negative impact on performance. This was done mostly in order
3166 to make it possible to share assembler modules, such as bn_mul_mont
3167 implementations, between 32- and 64-bit builds without hassle.
3168 [Andy Polyakov]
3169
3170 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
3171 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
3172 macro.
3173 [Bodo Moeller]
3174
3175 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
3176 dedicated Montgomery multiplication procedure, is introduced.
3177 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
3178 "64-bit" performance on certain 32-bit targets.
3179 [Andy Polyakov]
3180
3181 *) New option SSL_OP_NO_COMP to disable use of compression selectively
3182 in SSL structures. New SSL ctrl to set maximum send fragment size.
3183 Save memory by seeting the I/O buffer sizes dynamically instead of
3184 using the maximum available value.
3185 [Steve Henson]
3186
3187 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
3188 in addition to the text details.
3189 [Bodo Moeller]
3190
3191 *) Very, very preliminary EXPERIMENTAL support for printing of general
3192 ASN1 structures. This currently produces rather ugly output and doesn't
3193 handle several customised structures at all.
3194 [Steve Henson]
3195
3196 *) Integrated support for PVK file format and some related formats such
3197 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
3198 these in the 'rsa' and 'dsa' utilities.
3199 [Steve Henson]
3200
3201 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
3202 [Steve Henson]
3203
3204 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
3205 place for the (very old) "NETSCAPE" format certificates which are now
3206 handled using new ASN1 code equivalents.
3207 [Steve Henson]
3208
3209 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
3210 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
3211 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
3212 [Nils Larsch]
3213
3214 *) Modify CRL distribution points extension code to print out previously
3215 unsupported fields. Enhance extension setting code to allow setting of
3216 all fields.
3217 [Steve Henson]
3218
3219 *) Add print and set support for Issuing Distribution Point CRL extension.
3220 [Steve Henson]
3221
3222 *) Change 'Configure' script to enable Camellia by default.
3223 [NTT]
3224
3225 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
3226
3227 *) When rejecting SSL/TLS records due to an incorrect version number, never
3228 update s->server with a new major version number. As of
3229 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
3230 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
3231 the previous behavior could result in a read attempt at NULL when
3232 receiving specific incorrect SSL/TLS records once record payload
3233 protection is active. (CVE-2010-0740)
3234 [Bodo Moeller, Adam Langley <agl@chromium.org>]
3235
3236 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
3237 could be crashed if the relevant tables were not present (e.g. chrooted).
3238 [Tomas Hoger <thoger@redhat.com>]
3239
3240 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
3241
3242 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
3243 [Martin Olsson, Neel Mehta]
3244
3245 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
3246 accommodate for stack sorting, always a write lock!).
3247 [Bodo Moeller]
3248
3249 *) On some versions of WIN32 Heap32Next is very slow. This can cause
3250 excessive delays in the RAND_poll(): over a minute. As a workaround
3251 include a time check in the inner Heap32Next loop too.
3252 [Steve Henson]
3253
3254 *) The code that handled flushing of data in SSL/TLS originally used the
3255 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
3256 the problem outlined in PR#1949. The fix suggested there however can
3257 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
3258 of Apache). So instead simplify the code to flush unconditionally.
3259 This should be fine since flushing with no data to flush is a no op.
3260 [Steve Henson]
3261
3262 *) Handle TLS versions 2.0 and later properly and correctly use the
3263 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
3264 off ancient servers have a habit of sticking around for a while...
3265 [Steve Henson]
3266
3267 *) Modify compression code so it frees up structures without using the
3268 ex_data callbacks. This works around a problem where some applications
3269 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
3270 restarting) then use compression (e.g. SSL with compression) later.
3271 This results in significant per-connection memory leaks and
3272 has caused some security issues including CVE-2008-1678 and
3273 CVE-2009-4355.
3274 [Steve Henson]
3275
3276 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
3277 change when encrypting or decrypting.
3278 [Bodo Moeller]
3279
3280 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
3281 connect and renegotiate with servers which do not support RI.
3282 Until RI is more widely deployed this option is enabled by default.
3283 [Steve Henson]
3284
3285 *) Add "missing" ssl ctrls to clear options and mode.
3286 [Steve Henson]
3287
3288 *) If client attempts to renegotiate and doesn't support RI respond with
3289 a no_renegotiation alert as required by RFC5746. Some renegotiating
3290 TLS clients will continue a connection gracefully when they receive
3291 the alert. Unfortunately OpenSSL mishandled this alert and would hang
3292 waiting for a server hello which it will never receive. Now we treat a
3293 received no_renegotiation alert as a fatal error. This is because
3294 applications requesting a renegotiation might well expect it to succeed
3295 and would have no code in place to handle the server denying it so the
3296 only safe thing to do is to terminate the connection.
3297 [Steve Henson]
3298
3299 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
3300 peer supports secure renegotiation and 0 otherwise. Print out peer
3301 renegotiation support in s_client/s_server.
3302 [Steve Henson]
3303
3304 *) Replace the highly broken and deprecated SPKAC certification method with
3305 the updated NID creation version. This should correctly handle UTF8.
3306 [Steve Henson]
3307
3308 *) Implement RFC5746. Re-enable renegotiation but require the extension
3309 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
3310 turns out to be a bad idea. It has been replaced by
3311 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
3312 SSL_CTX_set_options(). This is really not recommended unless you
3313 know what you are doing.
3314 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
3315
3316 *) Fixes to stateless session resumption handling. Use initial_ctx when
3317 issuing and attempting to decrypt tickets in case it has changed during
3318 servername handling. Use a non-zero length session ID when attempting
3319 stateless session resumption: this makes it possible to determine if
3320 a resumption has occurred immediately after receiving server hello
3321 (several places in OpenSSL subtly assume this) instead of later in
3322 the handshake.
3323 [Steve Henson]
3324
3325 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
3326 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
3327 fixes for a few places where the return code is not checked
3328 correctly.
3329 [Julia Lawall <julia@diku.dk>]
3330
3331 *) Add --strict-warnings option to Configure script to include devteam
3332 warnings in other configurations.
3333 [Steve Henson]
3334
3335 *) Add support for --libdir option and LIBDIR variable in makefiles. This
3336 makes it possible to install openssl libraries in locations which
3337 have names other than "lib", for example "/usr/lib64" which some
3338 systems need.
3339 [Steve Henson, based on patch from Jeremy Utley]
3340
3341 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
3342 X690 8.9.12 and can produce some misleading textual output of OIDs.
3343 [Steve Henson, reported by Dan Kaminsky]
3344
3345 *) Delete MD2 from algorithm tables. This follows the recommendation in
3346 several standards that it is not used in new applications due to
3347 several cryptographic weaknesses. For binary compatibility reasons
3348 the MD2 API is still compiled in by default.
3349 [Steve Henson]
3350
3351 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
3352 and restored.
3353 [Steve Henson]
3354
3355 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
3356 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
3357 clash.
3358 [Guenter <lists@gknw.net>]
3359
3360 *) Fix the server certificate chain building code to use X509_verify_cert(),
3361 it used to have an ad-hoc builder which was unable to cope with anything
3362 other than a simple chain.
3363 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
3364
3365 *) Don't check self signed certificate signatures in X509_verify_cert()
3366 by default (a flag can override this): it just wastes time without
3367 adding any security. As a useful side effect self signed root CAs
3368 with non-FIPS digests are now usable in FIPS mode.
3369 [Steve Henson]
3370
3371 *) In dtls1_process_out_of_seq_message() the check if the current message
3372 is already buffered was missing. For every new message was memory
3373 allocated, allowing an attacker to perform an denial of service attack
3374 with sending out of seq handshake messages until there is no memory
3375 left. Additionally every future messege was buffered, even if the
3376 sequence number made no sense and would be part of another handshake.
3377 So only messages with sequence numbers less than 10 in advance will be
3378 buffered. (CVE-2009-1378)
3379 [Robin Seggelmann, discovered by Daniel Mentz]
3380
3381 *) Records are buffered if they arrive with a future epoch to be
3382 processed after finishing the corresponding handshake. There is
3383 currently no limitation to this buffer allowing an attacker to perform
3384 a DOS attack with sending records with future epochs until there is no
3385 memory left. This patch adds the pqueue_size() function to detemine
3386 the size of a buffer and limits the record buffer to 100 entries.
3387 (CVE-2009-1377)
3388 [Robin Seggelmann, discovered by Daniel Mentz]
3389
3390 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
3391 parent structure is freed. (CVE-2009-1379)
3392 [Daniel Mentz]
3393
3394 *) Handle non-blocking I/O properly in SSL_shutdown() call.
3395 [Darryl Miles <darryl-mailinglists@netbauds.net>]
3396
3397 *) Add 2.5.4.* OIDs
3398 [Ilya O. <vrghost@gmail.com>]
3399
3400 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
3401
3402 *) Disable renegotiation completely - this fixes a severe security
3403 problem (CVE-2009-3555) at the cost of breaking all
3404 renegotiation. Renegotiation can be re-enabled by setting
3405 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
3406 run-time. This is really not recommended unless you know what
3407 you're doing.
3408 [Ben Laurie]
3409
3410 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
3411
3412 *) Don't set val to NULL when freeing up structures, it is freed up by
3413 underlying code. If sizeof(void *) > sizeof(long) this can result in
3414 zeroing past the valid field. (CVE-2009-0789)
3415 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
3416
3417 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
3418 checked correctly. This would allow some invalid signed attributes to
3419 appear to verify correctly. (CVE-2009-0591)
3420 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3421
3422 *) Reject UniversalString and BMPString types with invalid lengths. This
3423 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
3424 a legal length. (CVE-2009-0590)
3425 [Steve Henson]
3426
3427 *) Set S/MIME signing as the default purpose rather than setting it
3428 unconditionally. This allows applications to override it at the store
3429 level.
3430 [Steve Henson]
3431
3432 *) Permit restricted recursion of ASN1 strings. This is needed in practice
3433 to handle some structures.
3434 [Steve Henson]
3435
3436 *) Improve efficiency of mem_gets: don't search whole buffer each time
3437 for a '\n'
3438 [Jeremy Shapiro <jnshapir@us.ibm.com>]
3439
3440 *) New -hex option for openssl rand.
3441 [Matthieu Herrb]
3442
3443 *) Print out UTF8String and NumericString when parsing ASN1.
3444 [Steve Henson]
3445
3446 *) Support NumericString type for name components.
3447 [Steve Henson]
3448
3449 *) Allow CC in the environment to override the automatically chosen
3450 compiler. Note that nothing is done to ensure flags work with the
3451 chosen compiler.
3452 [Ben Laurie]
3453
3454 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
3455
3456 *) Properly check EVP_VerifyFinal() and similar return values
3457 (CVE-2008-5077).
3458 [Ben Laurie, Bodo Moeller, Google Security Team]
3459
3460 *) Enable TLS extensions by default.
3461 [Ben Laurie]
3462
3463 *) Allow the CHIL engine to be loaded, whether the application is
3464 multithreaded or not. (This does not release the developer from the
3465 obligation to set up the dynamic locking callbacks.)
3466 [Sander Temme <sander@temme.net>]
3467
3468 *) Use correct exit code if there is an error in dgst command.
3469 [Steve Henson; problem pointed out by Roland Dirlewanger]
3470
3471 *) Tweak Configure so that you need to say "experimental-jpake" to enable
3472 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
3473 [Bodo Moeller]
3474
3475 *) Add experimental JPAKE support, including demo authentication in
3476 s_client and s_server.
3477 [Ben Laurie]
3478
3479 *) Set the comparison function in v3_addr_canonize().
3480 [Rob Austein <sra@hactrn.net>]
3481
3482 *) Add support for XMPP STARTTLS in s_client.
3483 [Philip Paeps <philip@freebsd.org>]
3484
3485 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
3486 to ensure that even with this option, only ciphersuites in the
3487 server's preference list will be accepted. (Note that the option
3488 applies only when resuming a session, so the earlier behavior was
3489 just about the algorithm choice for symmetric cryptography.)
3490 [Bodo Moeller]
3491
3492 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
3493
3494 *) Fix NULL pointer dereference if a DTLS server received
3495 ChangeCipherSpec as first record (CVE-2009-1386).
3496 [PR #1679]
3497
3498 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
3499 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
3500 [Nagendra Modadugu]
3501
3502 *) The fix in 0.9.8c that supposedly got rid of unsafe
3503 double-checked locking was incomplete for RSA blinding,
3504 addressing just one layer of what turns out to have been
3505 doubly unsafe triple-checked locking.
3506
3507 So now fix this for real by retiring the MONT_HELPER macro
3508 in crypto/rsa/rsa_eay.c.
3509
3510 [Bodo Moeller; problem pointed out by Marius Schilder]
3511
3512 *) Various precautionary measures:
3513
3514 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
3515
3516 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
3517 (NB: This would require knowledge of the secret session ticket key
3518 to exploit, in which case you'd be SOL either way.)
3519
3520 - Change bn_nist.c so that it will properly handle input BIGNUMs
3521 outside the expected range.
3522
3523 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
3524 builds.
3525
3526 [Neel Mehta, Bodo Moeller]
3527
3528 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
3529 the load fails. Useful for distros.
3530 [Ben Laurie and the FreeBSD team]
3531
3532 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
3533 [Steve Henson]
3534
3535 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
3536 [Huang Ying]
3537
3538 *) Expand ENGINE to support engine supplied SSL client certificate functions.
3539
3540 This work was sponsored by Logica.
3541 [Steve Henson]
3542
3543 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
3544 keystores. Support for SSL/TLS client authentication too.
3545 Not compiled unless enable-capieng specified to Configure.
3546
3547 This work was sponsored by Logica.
3548 [Steve Henson]
3549
3550 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
3551 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
3552 attribute creation routines such as certifcate requests and PKCS#12
3553 files.
3554 [Steve Henson]
3555
3556 Changes between 0.9.8g and 0.9.8h [28 May 2008]
3557
3558 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
3559 handshake which could lead to a cilent crash as found using the
3560 Codenomicon TLS test suite (CVE-2008-1672)
3561 [Steve Henson, Mark Cox]
3562
3563 *) Fix double free in TLS server name extensions which could lead to
3564 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
3565 [Joe Orton]
3566
3567 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
3568
3569 Clear the error queue to ensure that error entries left from
3570 older function calls do not interfere with the correct operation.
3571 [Lutz Jaenicke, Erik de Castro Lopo]
3572
3573 *) Remove root CA certificates of commercial CAs:
3574
3575 The OpenSSL project does not recommend any specific CA and does not
3576 have any policy with respect to including or excluding any CA.
3577 Therefore it does not make any sense to ship an arbitrary selection
3578 of root CA certificates with the OpenSSL software.
3579 [Lutz Jaenicke]
3580
3581 *) RSA OAEP patches to fix two separate invalid memory reads.
3582 The first one involves inputs when 'lzero' is greater than
3583 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
3584 before the beginning of from). The second one involves inputs where
3585 the 'db' section contains nothing but zeroes (there is a one-byte
3586 invalid read after the end of 'db').
3587 [Ivan Nestlerode <inestlerode@us.ibm.com>]
3588
3589 *) Partial backport from 0.9.9-dev:
3590
3591 Introduce bn_mul_mont (dedicated Montgomery multiplication
3592 procedure) as a candidate for BIGNUM assembler implementation.
3593 While 0.9.9-dev uses assembler for various architectures, only
3594 x86_64 is available by default here in the 0.9.8 branch, and
3595 32-bit x86 is available through a compile-time setting.
3596
3597 To try the 32-bit x86 assembler implementation, use Configure
3598 option "enable-montasm" (which exists only for this backport).
3599
3600 As "enable-montasm" for 32-bit x86 disclaims code stability
3601 anyway, in this constellation we activate additional code
3602 backported from 0.9.9-dev for further performance improvements,
3603 namely BN_from_montgomery_word. (To enable this otherwise,
3604 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
3605
3606 [Andy Polyakov (backport partially by Bodo Moeller)]
3607
3608 *) Add TLS session ticket callback. This allows an application to set
3609 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
3610 values. This is useful for key rollover for example where several key
3611 sets may exist with different names.
3612 [Steve Henson]
3613
3614 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
3615 This was broken until now in 0.9.8 releases, such that the only way
3616 a registered ENGINE could be used (assuming it initialises
3617 successfully on the host) was to explicitly set it as the default
3618 for the relevant algorithms. This is in contradiction with 0.9.7
3619 behaviour and the documentation. With this fix, when an ENGINE is
3620 registered into a given algorithm's table of implementations, the
3621 'uptodate' flag is reset so that auto-discovery will be used next
3622 time a new context for that algorithm attempts to select an
3623 implementation.
3624 [Ian Lister (tweaked by Geoff Thorpe)]
3625
3626 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
3627 implemention in the following ways:
3628
3629 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
3630 hard coded.
3631
3632 Lack of BER streaming support means one pass streaming processing is
3633 only supported if data is detached: setting the streaming flag is
3634 ignored for embedded content.
3635
3636 CMS support is disabled by default and must be explicitly enabled
3637 with the enable-cms configuration option.
3638 [Steve Henson]
3639
3640 *) Update the GMP engine glue to do direct copies between BIGNUM and
3641 mpz_t when openssl and GMP use the same limb size. Otherwise the
3642 existing "conversion via a text string export" trick is still used.
3643 [Paul Sheer <paulsheer@gmail.com>]
3644
3645 *) Zlib compression BIO. This is a filter BIO which compressed and
3646 uncompresses any data passed through it.
3647 [Steve Henson]
3648
3649 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
3650 RFC3394 compatible AES key wrapping.
3651 [Steve Henson]
3652
3653 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
3654 sets string data without copying. X509_ALGOR_set0() and
3655 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
3656 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
3657 from an X509_ATTRIBUTE structure optionally checking it occurs only
3658 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
3659 data.
3660 [Steve Henson]
3661
3662 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
3663 to get the expected BN_FLG_CONSTTIME behavior.
3664 [Bodo Moeller (Google)]
3665
3666 *) Netware support:
3667
3668 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
3669 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
3670 - added some more tests to do_tests.pl
3671 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
3672 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
3673 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
3674 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
3675 - various changes to netware.pl to enable gcc-cross builds on Win32
3676 platform
3677 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
3678 - various changes to fix missing prototype warnings
3679 - fixed x86nasm.pl to create correct asm files for NASM COFF output
3680 - added AES, WHIRLPOOL and CPUID assembler code to build files
3681 - added missing AES assembler make rules to mk1mf.pl
3682 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
3683 [Guenter Knauf <eflash@gmx.net>]
3684
3685 *) Implement certificate status request TLS extension defined in RFC3546.
3686 A client can set the appropriate parameters and receive the encoded
3687 OCSP response via a callback. A server can query the supplied parameters
3688 and set the encoded OCSP response in the callback. Add simplified examples
3689 to s_client and s_server.
3690 [Steve Henson]
3691
3692 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
3693
3694 *) Fix various bugs:
3695 + Binary incompatibility of ssl_ctx_st structure
3696 + DTLS interoperation with non-compliant servers
3697 + Don't call get_session_cb() without proposed session
3698 + Fix ia64 assembler code
3699 [Andy Polyakov, Steve Henson]
3700
3701 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
3702
3703 *) DTLS Handshake overhaul. There were longstanding issues with
3704 OpenSSL DTLS implementation, which were making it impossible for
3705 RFC 4347 compliant client to communicate with OpenSSL server.
3706 Unfortunately just fixing these incompatibilities would "cut off"
3707 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
3708 server keeps tolerating non RFC compliant syntax. The opposite is
3709 not true, 0.9.8f client can not communicate with earlier server.
3710 This update even addresses CVE-2007-4995.
3711 [Andy Polyakov]
3712
3713 *) Changes to avoid need for function casts in OpenSSL: some compilers
3714 (gcc 4.2 and later) reject their use.
3715 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
3716 Steve Henson]
3717
3718 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3719 RFC4507bis. The encrypted ticket format is an encrypted encoded
3720 SSL_SESSION structure, that way new session features are automatically
3721 supported.
3722
3723 If a client application caches session in an SSL_SESSION structure
3724 support is transparent because tickets are now stored in the encoded
3725 SSL_SESSION.
3726
3727 The SSL_CTX structure automatically generates keys for ticket
3728 protection in servers so again support should be possible
3729 with no application modification.
3730
3731 If a client or server wishes to disable RFC4507 support then the option
3732 SSL_OP_NO_TICKET can be set.
3733
3734 Add a TLS extension debugging callback to allow the contents of any client
3735 or server extensions to be examined.
3736
3737 This work was sponsored by Google.
3738 [Steve Henson]
3739
3740 *) Add initial support for TLS extensions, specifically for the server_name
3741 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3742 have new members for a host name. The SSL data structure has an
3743 additional member SSL_CTX *initial_ctx so that new sessions can be
3744 stored in that context to allow for session resumption, even after the
3745 SSL has been switched to a new SSL_CTX in reaction to a client's
3746 server_name extension.
3747
3748 New functions (subject to change):
3749
3750 SSL_get_servername()
3751 SSL_get_servername_type()
3752 SSL_set_SSL_CTX()
3753
3754 New CTRL codes and macros (subject to change):
3755
3756 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
3757 - SSL_CTX_set_tlsext_servername_callback()
3758 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
3759 - SSL_CTX_set_tlsext_servername_arg()
3760 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
3761
3762 openssl s_client has a new '-servername ...' option.
3763
3764 openssl s_server has new options '-servername_host ...', '-cert2 ...',
3765 '-key2 ...', '-servername_fatal' (subject to change). This allows
3766 testing the HostName extension for a specific single host name ('-cert'
3767 and '-key' remain fallbacks for handshakes without HostName
3768 negotiation). If the unrecogninzed_name alert has to be sent, this by
3769 default is a warning; it becomes fatal with the '-servername_fatal'
3770 option.
3771
3772 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
3773
3774 *) Add AES and SSE2 assembly language support to VC++ build.
3775 [Steve Henson]
3776
3777 *) Mitigate attack on final subtraction in Montgomery reduction.
3778 [Andy Polyakov]
3779
3780 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
3781 (which previously caused an internal error).
3782 [Bodo Moeller]
3783
3784 *) Squeeze another 10% out of IGE mode when in != out.
3785 [Ben Laurie]
3786
3787 *) AES IGE mode speedup.
3788 [Dean Gaudet (Google)]
3789
3790 *) Add the Korean symmetric 128-bit cipher SEED (see
3791 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
3792 add SEED ciphersuites from RFC 4162:
3793
3794 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
3795 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
3796 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
3797 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
3798
3799 To minimize changes between patchlevels in the OpenSSL 0.9.8
3800 series, SEED remains excluded from compilation unless OpenSSL
3801 is configured with 'enable-seed'.
3802 [KISA, Bodo Moeller]
3803
3804 *) Mitigate branch prediction attacks, which can be practical if a
3805 single processor is shared, allowing a spy process to extract
3806 information. For detailed background information, see
3807 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
3808 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
3809 and Necessary Software Countermeasures"). The core of the change
3810 are new versions BN_div_no_branch() and
3811 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
3812 respectively, which are slower, but avoid the security-relevant
3813 conditional branches. These are automatically called by BN_div()
3814 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
3815 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
3816 remove a conditional branch.
3817
3818 BN_FLG_CONSTTIME is the new name for the previous
3819 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
3820 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
3821 in the exponent causes BN_mod_exp_mont() to use the alternative
3822 implementation in BN_mod_exp_mont_consttime().) The old name
3823 remains as a deprecated alias.
3824
3825 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
3826 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
3827 constant-time implementations for more than just exponentiation.
3828 Here too the old name is kept as a deprecated alias.
3829
3830 BN_BLINDING_new() will now use BN_dup() for the modulus so that
3831 the BN_BLINDING structure gets an independent copy of the
3832 modulus. This means that the previous "BIGNUM *m" argument to
3833 BN_BLINDING_new() and to BN_BLINDING_create_param() now
3834 essentially becomes "const BIGNUM *m", although we can't actually
3835 change this in the header file before 0.9.9. It allows
3836 RSA_setup_blinding() to use BN_with_flags() on the modulus to
3837 enable BN_FLG_CONSTTIME.
3838
3839 [Matthew D Wood (Intel Corp)]
3840
3841 *) In the SSL/TLS server implementation, be strict about session ID
3842 context matching (which matters if an application uses a single
3843 external cache for different purposes). Previously,
3844 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
3845 set. This did ensure strict client verification, but meant that,
3846 with applications using a single external cache for quite
3847 different requirements, clients could circumvent ciphersuite
3848 restrictions for a given session ID context by starting a session
3849 in a different context.
3850 [Bodo Moeller]
3851
3852 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3853 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3854 authentication-only ciphersuites.
3855 [Bodo Moeller]
3856
3857 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
3858 not complete and could lead to a possible single byte overflow
3859 (CVE-2007-5135) [Ben Laurie]
3860
3861 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
3862
3863 *) Since AES128 and AES256 (and similarly Camellia128 and
3864 Camellia256) share a single mask bit in the logic of
3865 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3866 kludge to work properly if AES128 is available and AES256 isn't
3867 (or if Camellia128 is available and Camellia256 isn't).
3868 [Victor Duchovni]
3869
3870 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
3871 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
3872 When a point or a seed is encoded in a BIT STRING, we need to
3873 prevent the removal of trailing zero bits to get the proper DER
3874 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
3875 of a NamedBitList, for which trailing 0 bits need to be removed.)
3876 [Bodo Moeller]
3877
3878 *) Have SSL/TLS server implementation tolerate "mismatched" record
3879 protocol version while receiving ClientHello even if the
3880 ClientHello is fragmented. (The server can't insist on the
3881 particular protocol version it has chosen before the ServerHello
3882 message has informed the client about his choice.)
3883 [Bodo Moeller]
3884
3885 *) Add RFC 3779 support.
3886 [Rob Austein for ARIN, Ben Laurie]
3887
3888 *) Load error codes if they are not already present instead of using a
3889 static variable. This allows them to be cleanly unloaded and reloaded.
3890 Improve header file function name parsing.
3891 [Steve Henson]
3892
3893 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
3894 or CAPABILITY handshake as required by RFCs.
3895 [Goetz Babin-Ebell]
3896
3897 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
3898
3899 *) Introduce limits to prevent malicious keys being able to
3900 cause a denial of service. (CVE-2006-2940)
3901 [Steve Henson, Bodo Moeller]
3902
3903 *) Fix ASN.1 parsing of certain invalid structures that can result
3904 in a denial of service. (CVE-2006-2937) [Steve Henson]
3905
3906 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3907 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3908
3909 *) Fix SSL client code which could crash if connecting to a
3910 malicious SSLv2 server. (CVE-2006-4343)
3911 [Tavis Ormandy and Will Drewry, Google Security Team]
3912
3913 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
3914 match only those. Before that, "AES256-SHA" would be interpreted
3915 as a pattern and match "AES128-SHA" too (since AES128-SHA got
3916 the same strength classification in 0.9.7h) as we currently only
3917 have a single AES bit in the ciphersuite description bitmap.
3918 That change, however, also applied to ciphersuite strings such as
3919 "RC4-MD5" that intentionally matched multiple ciphersuites --
3920 namely, SSL 2.0 ciphersuites in addition to the more common ones
3921 from SSL 3.0/TLS 1.0.
3922
3923 So we change the selection algorithm again: Naming an explicit
3924 ciphersuite selects this one ciphersuite, and any other similar
3925 ciphersuite (same bitmap) from *other* protocol versions.
3926 Thus, "RC4-MD5" again will properly select both the SSL 2.0
3927 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
3928
3929 Since SSL 2.0 does not have any ciphersuites for which the
3930 128/256 bit distinction would be relevant, this works for now.
3931 The proper fix will be to use different bits for AES128 and
3932 AES256, which would have avoided the problems from the beginning;
3933 however, bits are scarce, so we can only do this in a new release
3934 (not just a patchlevel) when we can change the SSL_CIPHER
3935 definition to split the single 'unsigned long mask' bitmap into
3936 multiple values to extend the available space.
3937
3938 [Bodo Moeller]
3939
3940 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
3941
3942 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3943 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3944
3945 *) Add AES IGE and biIGE modes.
3946 [Ben Laurie]
3947
3948 *) Change the Unix randomness entropy gathering to use poll() when
3949 possible instead of select(), since the latter has some
3950 undesirable limitations.
3951 [Darryl Miles via Richard Levitte and Bodo Moeller]
3952
3953 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
3954 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
3955 cannot be implicitly activated as part of, e.g., the "AES" alias.
3956 However, please upgrade to OpenSSL 0.9.9[-dev] for
3957 non-experimental use of the ECC ciphersuites to get TLS extension
3958 support, which is required for curve and point format negotiation
3959 to avoid potential handshake problems.
3960 [Bodo Moeller]
3961
3962 *) Disable rogue ciphersuites:
3963
3964 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3965 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3966 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3967
3968 The latter two were purportedly from
3969 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3970 appear there.
3971
3972 Also deactivate the remaining ciphersuites from
3973 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3974 unofficial, and the ID has long expired.
3975 [Bodo Moeller]
3976
3977 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3978 dual-core machines) and other potential thread-safety issues.
3979 [Bodo Moeller]
3980
3981 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3982 versions), which is now available for royalty-free use
3983 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3984 Also, add Camellia TLS ciphersuites from RFC 4132.
3985
3986 To minimize changes between patchlevels in the OpenSSL 0.9.8
3987 series, Camellia remains excluded from compilation unless OpenSSL
3988 is configured with 'enable-camellia'.
3989 [NTT]
3990
3991 *) Disable the padding bug check when compression is in use. The padding
3992 bug check assumes the first packet is of even length, this is not
3993 necessarily true if compresssion is enabled and can result in false
3994 positives causing handshake failure. The actual bug test is ancient
3995 code so it is hoped that implementations will either have fixed it by
3996 now or any which still have the bug do not support compression.
3997 [Steve Henson]
3998
3999 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4000
4001 *) When applying a cipher rule check to see if string match is an explicit
4002 cipher suite and only match that one cipher suite if it is.
4003 [Steve Henson]
4004
4005 *) Link in manifests for VC++ if needed.
4006 [Austin Ziegler <halostatue@gmail.com>]
4007
4008 *) Update support for ECC-based TLS ciphersuites according to
4009 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4010 TLS extensions, which are supported starting with the 0.9.9
4011 branch, not in the OpenSSL 0.9.8 branch).
4012 [Douglas Stebila]
4013
4014 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4015 opaque EVP_CIPHER_CTX handling.
4016 [Steve Henson]
4017
4018 *) Fixes and enhancements to zlib compression code. We now only use
4019 "zlib1.dll" and use the default __cdecl calling convention on Win32
4020 to conform with the standards mentioned here:
4021 http://www.zlib.net/DLL_FAQ.txt
4022 Static zlib linking now works on Windows and the new --with-zlib-include
4023 --with-zlib-lib options to Configure can be used to supply the location
4024 of the headers and library. Gracefully handle case where zlib library
4025 can't be loaded.
4026 [Steve Henson]
4027
4028 *) Several fixes and enhancements to the OID generation code. The old code
4029 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4030 handle numbers larger than ULONG_MAX, truncated printing and had a
4031 non standard OBJ_obj2txt() behaviour.
4032 [Steve Henson]
4033
4034 *) Add support for building of engines under engine/ as shared libraries
4035 under VC++ build system.
4036 [Steve Henson]
4037
4038 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4039 Hopefully, we will not see any false combination of paths any more.
4040 [Richard Levitte]
4041
4042 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4043
4044 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4045 (part of SSL_OP_ALL). This option used to disable the
4046 countermeasure against man-in-the-middle protocol-version
4047 rollback in the SSL 2.0 server implementation, which is a bad
4048 idea. (CVE-2005-2969)
4049
4050 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4051 for Information Security, National Institute of Advanced Industrial
4052 Science and Technology [AIST], Japan)]
4053
4054 *) Add two function to clear and return the verify parameter flags.
4055 [Steve Henson]
4056
4057 *) Keep cipherlists sorted in the source instead of sorting them at
4058 runtime, thus removing the need for a lock.
4059 [Nils Larsch]
4060
4061 *) Avoid some small subgroup attacks in Diffie-Hellman.
4062 [Nick Mathewson and Ben Laurie]
4063
4064 *) Add functions for well-known primes.
4065 [Nick Mathewson]
4066
4067 *) Extended Windows CE support.
4068 [Satoshi Nakamura and Andy Polyakov]
4069
4070 *) Initialize SSL_METHOD structures at compile time instead of during
4071 runtime, thus removing the need for a lock.
4072 [Steve Henson]
4073
4074 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4075 attempting to decrypt each encrypted key in turn. Add support to
4076 smime utility.
4077 [Steve Henson]
4078
4079 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4080
4081 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4082 OpenSSL 0.9.8.]
4083
4084 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4085 [Richard Levitte]
4086
4087 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4088 key into the same file any more.
4089 [Richard Levitte]
4090
4091 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4092 [Andy Polyakov]
4093
4094 *) Add -utf8 command line and config file option to 'ca'.
4095 [Stefan <stf@udoma.org]
4096
4097 *) Removed the macro des_crypt(), as it seems to conflict with some
4098 libraries. Use DES_crypt().
4099 [Richard Levitte]
4100
4101 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4102 involves renaming the source and generated shared-libs for
4103 both. The engines will accept the corrected or legacy ids
4104 ('ncipher' and '4758_cca' respectively) when binding. NB,
4105 this only applies when building 'shared'.
4106 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4107
4108 *) Add attribute functions to EVP_PKEY structure. Modify
4109 PKCS12_create() to recognize a CSP name attribute and
4110 use it. Make -CSP option work again in pkcs12 utility.
4111 [Steve Henson]
4112
4113 *) Add new functionality to the bn blinding code:
4114 - automatic re-creation of the BN_BLINDING parameters after
4115 a fixed number of uses (currently 32)
4116 - add new function for parameter creation
4117 - introduce flags to control the update behaviour of the
4118 BN_BLINDING parameters
4119 - hide BN_BLINDING structure
4120 Add a second BN_BLINDING slot to the RSA structure to improve
4121 performance when a single RSA object is shared among several
4122 threads.
4123 [Nils Larsch]
4124
4125 *) Add support for DTLS.
4126 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4127
4128 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4129 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4130 [Walter Goulet]
4131
4132 *) Remove buggy and incompletet DH cert support from
4133 ssl/ssl_rsa.c and ssl/s3_both.c
4134 [Nils Larsch]
4135
4136 *) Use SHA-1 instead of MD5 as the default digest algorithm for
4137 the apps/openssl applications.
4138 [Nils Larsch]
4139
4140 *) Compile clean with "-Wall -Wmissing-prototypes
4141 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
4142 DEBUG_SAFESTACK must also be set.
4143 [Ben Laurie]
4144
4145 *) Change ./Configure so that certain algorithms can be disabled by default.
4146 The new counterpiece to "no-xxx" is "enable-xxx".
4147
4148 The patented RC5 and MDC2 algorithms will now be disabled unless
4149 "enable-rc5" and "enable-mdc2", respectively, are specified.
4150
4151 (IDEA remains enabled despite being patented. This is because IDEA
4152 is frequently required for interoperability, and there is no license
4153 fee for non-commercial use. As before, "no-idea" can be used to
4154 avoid this algorithm.)
4155
4156 [Bodo Moeller]
4157
4158 *) Add processing of proxy certificates (see RFC 3820). This work was
4159 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
4160 EGEE (Enabling Grids for E-science in Europe).
4161 [Richard Levitte]
4162
4163 *) RC4 performance overhaul on modern architectures/implementations, such
4164 as Intel P4, IA-64 and AMD64.
4165 [Andy Polyakov]
4166
4167 *) New utility extract-section.pl. This can be used specify an alternative
4168 section number in a pod file instead of having to treat each file as
4169 a separate case in Makefile. This can be done by adding two lines to the
4170 pod file:
4171
4172 =for comment openssl_section:XXX
4173
4174 The blank line is mandatory.
4175
4176 [Steve Henson]
4177
4178 *) New arguments -certform, -keyform and -pass for s_client and s_server
4179 to allow alternative format key and certificate files and passphrase
4180 sources.
4181 [Steve Henson]
4182
4183 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
4184 update associated structures and add various utility functions.
4185
4186 Add new policy related verify parameters, include policy checking in
4187 standard verify code. Enhance 'smime' application with extra parameters
4188 to support policy checking and print out.
4189 [Steve Henson]
4190
4191 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
4192 Nehemiah processors. These extensions support AES encryption in hardware
4193 as well as RNG (though RNG support is currently disabled).
4194 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
4195
4196 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
4197 [Geoff Thorpe]
4198
4199 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
4200 [Andy Polyakov and a number of other people]
4201
4202 *) Improved PowerPC platform support. Most notably BIGNUM assembler
4203 implementation contributed by IBM.
4204 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
4205
4206 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
4207 exponent rather than 'unsigned long'. There is a corresponding change to
4208 the new 'rsa_keygen' element of the RSA_METHOD structure.
4209 [Jelte Jansen, Geoff Thorpe]
4210
4211 *) Functionality for creating the initial serial number file is now
4212 moved from CA.pl to the 'ca' utility with a new option -create_serial.
4213
4214 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
4215 number file to 1, which is bound to cause problems. To avoid
4216 the problems while respecting compatibility between different 0.9.7
4217 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
4218 CA.pl for serial number initialization. With the new release 0.9.8,
4219 we can fix the problem directly in the 'ca' utility.)
4220 [Steve Henson]
4221
4222 *) Reduced header interdepencies by declaring more opaque objects in
4223 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
4224 give fewer recursive includes, which could break lazy source code - so
4225 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
4226 developers should define this symbol when building and using openssl to
4227 ensure they track the recommended behaviour, interfaces, [etc], but
4228 backwards-compatible behaviour prevails when this isn't defined.
4229 [Geoff Thorpe]
4230
4231 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
4232 [Steve Henson]
4233
4234 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
4235 This will generate a random key of the appropriate length based on the
4236 cipher context. The EVP_CIPHER can provide its own random key generation
4237 routine to support keys of a specific form. This is used in the des and
4238 3des routines to generate a key of the correct parity. Update S/MIME
4239 code to use new functions and hence generate correct parity DES keys.
4240 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
4241 valid (weak or incorrect parity).
4242 [Steve Henson]
4243
4244 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
4245 as looking them up. This is useful when the verified structure may contain
4246 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
4247 present unless the new PKCS7_NO_CRL flag is asserted.
4248 [Steve Henson]
4249
4250 *) Extend ASN1 oid configuration module. It now additionally accepts the
4251 syntax:
4252
4253 shortName = some long name, 1.2.3.4
4254 [Steve Henson]
4255
4256 *) Reimplemented the BN_CTX implementation. There is now no more static
4257 limitation on the number of variables it can handle nor the depth of the
4258 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
4259 information can now expand as required, and rather than having a single
4260 static array of bignums, BN_CTX now uses a linked-list of such arrays
4261 allowing it to expand on demand whilst maintaining the usefulness of
4262 BN_CTX's "bundling".
4263 [Geoff Thorpe]
4264
4265 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
4266 to allow all RSA operations to function using a single BN_CTX.
4267 [Geoff Thorpe]
4268
4269 *) Preliminary support for certificate policy evaluation and checking. This
4270 is initially intended to pass the tests outlined in "Conformance Testing
4271 of Relying Party Client Certificate Path Processing Logic" v1.07.
4272 [Steve Henson]
4273
4274 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
4275 remained unused and not that useful. A variety of other little bignum
4276 tweaks and fixes have also been made continuing on from the audit (see
4277 below).
4278 [Geoff Thorpe]
4279
4280 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
4281 associated ASN1, EVP and SSL functions and old ASN1 macros.
4282 [Richard Levitte]
4283
4284 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
4285 and this should never fail. So the return value from the use of
4286 BN_set_word() (which can fail due to needless expansion) is now deprecated;
4287 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
4288 [Geoff Thorpe]
4289
4290 *) BN_CTX_get() should return zero-valued bignums, providing the same
4291 initialised value as BN_new().
4292 [Geoff Thorpe, suggested by Ulf Möller]
4293
4294 *) Support for inhibitAnyPolicy certificate extension.
4295 [Steve Henson]
4296
4297 *) An audit of the BIGNUM code is underway, for which debugging code is
4298 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
4299 is considered valid when processing BIGNUMs, and causes execution to
4300 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
4301 further steps are taken to deliberately pollute unused data in BIGNUM
4302 structures to try and expose faulty code further on. For now, openssl will
4303 (in its default mode of operation) continue to tolerate the inconsistent
4304 forms that it has tolerated in the past, but authors and packagers should
4305 consider trying openssl and their own applications when compiled with
4306 these debugging symbols defined. It will help highlight potential bugs in
4307 their own code, and will improve the test coverage for OpenSSL itself. At
4308 some point, these tighter rules will become openssl's default to improve
4309 maintainability, though the assert()s and other overheads will remain only
4310 in debugging configurations. See bn.h for more details.
4311 [Geoff Thorpe, Nils Larsch, Ulf Möller]
4312
4313 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
4314 that can only be obtained through BN_CTX_new() (which implicitly
4315 initialises it). The presence of this function only made it possible
4316 to overwrite an existing structure (and cause memory leaks).
4317 [Geoff Thorpe]
4318
4319 *) Because of the callback-based approach for implementing LHASH as a
4320 template type, lh_insert() adds opaque objects to hash-tables and
4321 lh_doall() or lh_doall_arg() are typically used with a destructor callback
4322 to clean up those corresponding objects before destroying the hash table
4323 (and losing the object pointers). So some over-zealous constifications in
4324 LHASH have been relaxed so that lh_insert() does not take (nor store) the
4325 objects as "const" and the lh_doall[_arg] callback wrappers are not
4326 prototyped to have "const" restrictions on the object pointers they are
4327 given (and so aren't required to cast them away any more).
4328 [Geoff Thorpe]
4329
4330 *) The tmdiff.h API was so ugly and minimal that our own timing utility
4331 (speed) prefers to use its own implementation. The two implementations
4332 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
4333 its object type properly exposed (MS_TM) instead of casting to/from "char
4334 *". This may still change yet if someone realises MS_TM and "ms_time_***"
4335 aren't necessarily the greatest nomenclatures - but this is what was used
4336 internally to the implementation so I've used that for now.
4337 [Geoff Thorpe]
4338
4339 *) Ensure that deprecated functions do not get compiled when
4340 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
4341 the self-tests were still using deprecated key-generation functions so
4342 these have been updated also.
4343 [Geoff Thorpe]
4344
4345 *) Reorganise PKCS#7 code to separate the digest location functionality
4346 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
4347 New function PKCS7_set_digest() to set the digest type for PKCS#7
4348 digestedData type. Add additional code to correctly generate the
4349 digestedData type and add support for this type in PKCS7 initialization
4350 functions.
4351 [Steve Henson]
4352
4353 *) New function PKCS7_set0_type_other() this initializes a PKCS7
4354 structure of type "other".
4355 [Steve Henson]
4356
4357 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
4358 sure the loop does correctly stop and breaking ("division by zero")
4359 modulus operations are not performed. The (pre-generated) prime
4360 table crypto/bn/bn_prime.h was already correct, but it could not be
4361 re-generated on some platforms because of the "division by zero"
4362 situation in the script.
4363 [Ralf S. Engelschall]
4364
4365 *) Update support for ECC-based TLS ciphersuites according to
4366 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
4367 SHA-1 now is only used for "small" curves (where the
4368 representation of a field element takes up to 24 bytes); for
4369 larger curves, the field element resulting from ECDH is directly
4370 used as premaster secret.
4371 [Douglas Stebila (Sun Microsystems Laboratories)]
4372
4373 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
4374 curve secp160r1 to the tests.
4375 [Douglas Stebila (Sun Microsystems Laboratories)]
4376
4377 *) Add the possibility to load symbols globally with DSO.
4378 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
4379
4380 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
4381 control of the error stack.
4382 [Richard Levitte]
4383
4384 *) Add support for STORE in ENGINE.
4385 [Richard Levitte]
4386
4387 *) Add the STORE type. The intention is to provide a common interface
4388 to certificate and key stores, be they simple file-based stores, or
4389 HSM-type store, or LDAP stores, or...
4390 NOTE: The code is currently UNTESTED and isn't really used anywhere.
4391 [Richard Levitte]
4392
4393 *) Add a generic structure called OPENSSL_ITEM. This can be used to
4394 pass a list of arguments to any function as well as provide a way
4395 for a function to pass data back to the caller.
4396 [Richard Levitte]
4397
4398 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
4399 works like BUF_strdup() but can be used to duplicate a portion of
4400 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
4401 a memory area.
4402 [Richard Levitte]
4403
4404 *) Add the function sk_find_ex() which works like sk_find(), but will
4405 return an index to an element even if an exact match couldn't be
4406 found. The index is guaranteed to point at the element where the
4407 searched-for key would be inserted to preserve sorting order.
4408 [Richard Levitte]
4409
4410 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
4411 takes an extra flags argument for optional functionality. Currently,
4412 the following flags are defined:
4413
4414 OBJ_BSEARCH_VALUE_ON_NOMATCH
4415 This one gets OBJ_bsearch_ex() to return a pointer to the first
4416 element where the comparing function returns a negative or zero
4417 number.
4418
4419 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
4420 This one gets OBJ_bsearch_ex() to return a pointer to the first
4421 element where the comparing function returns zero. This is useful
4422 if there are more than one element where the comparing function
4423 returns zero.
4424 [Richard Levitte]
4425
4426 *) Make it possible to create self-signed certificates with 'openssl ca'
4427 in such a way that the self-signed certificate becomes part of the
4428 CA database and uses the same mechanisms for serial number generation
4429 as all other certificate signing. The new flag '-selfsign' enables
4430 this functionality. Adapt CA.sh and CA.pl.in.
4431 [Richard Levitte]
4432
4433 *) Add functionality to check the public key of a certificate request
4434 against a given private. This is useful to check that a certificate
4435 request can be signed by that key (self-signing).
4436 [Richard Levitte]
4437
4438 *) Make it possible to have multiple active certificates with the same
4439 subject in the CA index file. This is done only if the keyword
4440 'unique_subject' is set to 'no' in the main CA section (default
4441 if 'CA_default') of the configuration file. The value is saved
4442 with the database itself in a separate index attribute file,
4443 named like the index file with '.attr' appended to the name.
4444 [Richard Levitte]
4445
4446 *) Generate muti valued AVAs using '+' notation in config files for
4447 req and dirName.
4448 [Steve Henson]
4449
4450 *) Support for nameConstraints certificate extension.
4451 [Steve Henson]
4452
4453 *) Support for policyConstraints certificate extension.
4454 [Steve Henson]
4455
4456 *) Support for policyMappings certificate extension.
4457 [Steve Henson]
4458
4459 *) Make sure the default DSA_METHOD implementation only uses its
4460 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
4461 and change its own handlers to be NULL so as to remove unnecessary
4462 indirection. This lets alternative implementations fallback to the
4463 default implementation more easily.
4464 [Geoff Thorpe]
4465
4466 *) Support for directoryName in GeneralName related extensions
4467 in config files.
4468 [Steve Henson]
4469
4470 *) Make it possible to link applications using Makefile.shared.
4471 Make that possible even when linking against static libraries!
4472 [Richard Levitte]
4473
4474 *) Support for single pass processing for S/MIME signing. This now
4475 means that S/MIME signing can be done from a pipe, in addition
4476 cleartext signing (multipart/signed type) is effectively streaming
4477 and the signed data does not need to be all held in memory.
4478
4479 This is done with a new flag PKCS7_STREAM. When this flag is set
4480 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
4481 is done after the data is output (and digests calculated) in
4482 SMIME_write_PKCS7().
4483 [Steve Henson]
4484
4485 *) Add full support for -rpath/-R, both in shared libraries and
4486 applications, at least on the platforms where it's known how
4487 to do it.
4488 [Richard Levitte]
4489
4490 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
4491 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
4492 will now compute a table of multiples of the generator that
4493 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
4494 faster (notably in the case of a single point multiplication,
4495 scalar * generator).
4496 [Nils Larsch, Bodo Moeller]
4497
4498 *) IPv6 support for certificate extensions. The various extensions
4499 which use the IP:a.b.c.d can now take IPv6 addresses using the
4500 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
4501 correctly.
4502 [Steve Henson]
4503
4504 *) Added an ENGINE that implements RSA by performing private key
4505 exponentiations with the GMP library. The conversions to and from
4506 GMP's mpz_t format aren't optimised nor are any montgomery forms
4507 cached, and on x86 it appears OpenSSL's own performance has caught up.
4508 However there are likely to be other architectures where GMP could
4509 provide a boost. This ENGINE is not built in by default, but it can be
4510 specified at Configure time and should be accompanied by the necessary
4511 linker additions, eg;
4512 ./config -DOPENSSL_USE_GMP -lgmp
4513 [Geoff Thorpe]
4514
4515 *) "openssl engine" will not display ENGINE/DSO load failure errors when
4516 testing availability of engines with "-t" - the old behaviour is
4517 produced by increasing the feature's verbosity with "-tt".
4518 [Geoff Thorpe]
4519
4520 *) ECDSA routines: under certain error conditions uninitialized BN objects
4521 could be freed. Solution: make sure initialization is performed early
4522 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
4523 via PR#459)
4524 [Lutz Jaenicke]
4525
4526 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
4527 and DH_METHOD (eg. by ENGINE implementations) to override the normal
4528 software implementations. For DSA and DH, parameter generation can
4529 also be overriden by providing the appropriate method callbacks.
4530 [Geoff Thorpe]
4531
4532 *) Change the "progress" mechanism used in key-generation and
4533 primality testing to functions that take a new BN_GENCB pointer in
4534 place of callback/argument pairs. The new API functions have "_ex"
4535 postfixes and the older functions are reimplemented as wrappers for
4536 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
4537 declarations of the old functions to help (graceful) attempts to
4538 migrate to the new functions. Also, the new key-generation API
4539 functions operate on a caller-supplied key-structure and return
4540 success/failure rather than returning a key or NULL - this is to
4541 help make "keygen" another member function of RSA_METHOD etc.
4542
4543 Example for using the new callback interface:
4544
4545 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
4546 void *my_arg = ...;
4547 BN_GENCB my_cb;
4548
4549 BN_GENCB_set(&my_cb, my_callback, my_arg);
4550
4551 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
4552 /* For the meaning of a, b in calls to my_callback(), see the
4553 * documentation of the function that calls the callback.
4554 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
4555 * my_callback should return 1 if it wants BN_is_prime_ex()
4556 * to continue, or 0 to stop.
4557 */
4558
4559 [Geoff Thorpe]
4560
4561 *) Change the ZLIB compression method to be stateful, and make it
4562 available to TLS with the number defined in
4563 draft-ietf-tls-compression-04.txt.
4564 [Richard Levitte]
4565
4566 *) Add the ASN.1 structures and functions for CertificatePair, which
4567 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
4568
4569 CertificatePair ::= SEQUENCE {
4570 forward [0] Certificate OPTIONAL,
4571 reverse [1] Certificate OPTIONAL,
4572 -- at least one of the pair shall be present -- }
4573
4574 Also implement the PEM functions to read and write certificate
4575 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
4576
4577 This needed to be defined, mostly for the sake of the LDAP
4578 attribute crossCertificatePair, but may prove useful elsewhere as
4579 well.
4580 [Richard Levitte]
4581
4582 *) Make it possible to inhibit symlinking of shared libraries in
4583 Makefile.shared, for Cygwin's sake.
4584 [Richard Levitte]
4585
4586 *) Extend the BIGNUM API by creating a function
4587 void BN_set_negative(BIGNUM *a, int neg);
4588 and a macro that behave like
4589 int BN_is_negative(const BIGNUM *a);
4590
4591 to avoid the need to access 'a->neg' directly in applications.
4592 [Nils Larsch]
4593
4594 *) Implement fast modular reduction for pseudo-Mersenne primes
4595 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
4596 EC_GROUP_new_curve_GFp() will now automatically use this
4597 if applicable.
4598 [Nils Larsch <nla@trustcenter.de>]
4599
4600 *) Add new lock type (CRYPTO_LOCK_BN).
4601 [Bodo Moeller]
4602
4603 *) Change the ENGINE framework to automatically load engines
4604 dynamically from specific directories unless they could be
4605 found to already be built in or loaded. Move all the
4606 current engines except for the cryptodev one to a new
4607 directory engines/.
4608 The engines in engines/ are built as shared libraries if
4609 the "shared" options was given to ./Configure or ./config.
4610 Otherwise, they are inserted in libcrypto.a.
4611 /usr/local/ssl/engines is the default directory for dynamic
4612 engines, but that can be overriden at configure time through
4613 the usual use of --prefix and/or --openssldir, and at run
4614 time with the environment variable OPENSSL_ENGINES.
4615 [Geoff Thorpe and Richard Levitte]
4616
4617 *) Add Makefile.shared, a helper makefile to build shared
4618 libraries. Addapt Makefile.org.
4619 [Richard Levitte]
4620
4621 *) Add version info to Win32 DLLs.
4622 [Peter 'Luna' Runestig" <peter@runestig.com>]
4623
4624 *) Add new 'medium level' PKCS#12 API. Certificates and keys
4625 can be added using this API to created arbitrary PKCS#12
4626 files while avoiding the low level API.
4627
4628 New options to PKCS12_create(), key or cert can be NULL and
4629 will then be omitted from the output file. The encryption
4630 algorithm NIDs can be set to -1 for no encryption, the mac
4631 iteration count can be set to 0 to omit the mac.
4632
4633 Enhance pkcs12 utility by making the -nokeys and -nocerts
4634 options work when creating a PKCS#12 file. New option -nomac
4635 to omit the mac, NONE can be set for an encryption algorithm.
4636 New code is modified to use the enhanced PKCS12_create()
4637 instead of the low level API.
4638 [Steve Henson]
4639
4640 *) Extend ASN1 encoder to support indefinite length constructed
4641 encoding. This can output sequences tags and octet strings in
4642 this form. Modify pk7_asn1.c to support indefinite length
4643 encoding. This is experimental and needs additional code to
4644 be useful, such as an ASN1 bio and some enhanced streaming
4645 PKCS#7 code.
4646
4647 Extend template encode functionality so that tagging is passed
4648 down to the template encoder.
4649 [Steve Henson]
4650
4651 *) Let 'openssl req' fail if an argument to '-newkey' is not
4652 recognized instead of using RSA as a default.
4653 [Bodo Moeller]
4654
4655 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
4656 As these are not official, they are not included in "ALL";
4657 the "ECCdraft" ciphersuite group alias can be used to select them.
4658 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
4659
4660 *) Add ECDH engine support.
4661 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
4662
4663 *) Add ECDH in new directory crypto/ecdh/.
4664 [Douglas Stebila (Sun Microsystems Laboratories)]
4665
4666 *) Let BN_rand_range() abort with an error after 100 iterations
4667 without success (which indicates a broken PRNG).
4668 [Bodo Moeller]
4669
4670 *) Change BN_mod_sqrt() so that it verifies that the input value
4671 is really the square of the return value. (Previously,
4672 BN_mod_sqrt would show GIGO behaviour.)
4673 [Bodo Moeller]
4674
4675 *) Add named elliptic curves over binary fields from X9.62, SECG,
4676 and WAP/WTLS; add OIDs that were still missing.
4677
4678 [Sheueling Chang Shantz and Douglas Stebila
4679 (Sun Microsystems Laboratories)]
4680
4681 *) Extend the EC library for elliptic curves over binary fields
4682 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
4683 New EC_METHOD:
4684
4685 EC_GF2m_simple_method
4686
4687 New API functions:
4688
4689 EC_GROUP_new_curve_GF2m
4690 EC_GROUP_set_curve_GF2m
4691 EC_GROUP_get_curve_GF2m
4692 EC_POINT_set_affine_coordinates_GF2m
4693 EC_POINT_get_affine_coordinates_GF2m
4694 EC_POINT_set_compressed_coordinates_GF2m
4695
4696 Point compression for binary fields is disabled by default for
4697 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
4698 enable it).
4699
4700 As binary polynomials are represented as BIGNUMs, various members
4701 of the EC_GROUP and EC_POINT data structures can be shared
4702 between the implementations for prime fields and binary fields;
4703 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
4704 are essentially identical to their ..._GFp counterparts.
4705 (For simplicity, the '..._GFp' prefix has been dropped from
4706 various internal method names.)
4707
4708 An internal 'field_div' method (similar to 'field_mul' and
4709 'field_sqr') has been added; this is used only for binary fields.
4710
4711 [Sheueling Chang Shantz and Douglas Stebila
4712 (Sun Microsystems Laboratories)]
4713
4714 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
4715 through methods ('mul', 'precompute_mult').
4716
4717 The generic implementations (now internally called 'ec_wNAF_mul'
4718 and 'ec_wNAF_precomputed_mult') remain the default if these
4719 methods are undefined.
4720
4721 [Sheueling Chang Shantz and Douglas Stebila
4722 (Sun Microsystems Laboratories)]
4723
4724 *) New function EC_GROUP_get_degree, which is defined through
4725 EC_METHOD. For curves over prime fields, this returns the bit
4726 length of the modulus.
4727
4728 [Sheueling Chang Shantz and Douglas Stebila
4729 (Sun Microsystems Laboratories)]
4730
4731 *) New functions EC_GROUP_dup, EC_POINT_dup.
4732 (These simply call ..._new and ..._copy).
4733
4734 [Sheueling Chang Shantz and Douglas Stebila
4735 (Sun Microsystems Laboratories)]
4736
4737 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
4738 Polynomials are represented as BIGNUMs (where the sign bit is not
4739 used) in the following functions [macros]:
4740
4741 BN_GF2m_add
4742 BN_GF2m_sub [= BN_GF2m_add]
4743 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
4744 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
4745 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
4746 BN_GF2m_mod_inv
4747 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
4748 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
4749 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
4750 BN_GF2m_cmp [= BN_ucmp]
4751
4752 (Note that only the 'mod' functions are actually for fields GF(2^m).
4753 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
4754
4755 For some functions, an the irreducible polynomial defining a
4756 field can be given as an 'unsigned int[]' with strictly
4757 decreasing elements giving the indices of those bits that are set;
4758 i.e., p[] represents the polynomial
4759 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
4760 where
4761 p[0] > p[1] > ... > p[k] = 0.
4762 This applies to the following functions:
4763
4764 BN_GF2m_mod_arr
4765 BN_GF2m_mod_mul_arr
4766 BN_GF2m_mod_sqr_arr
4767 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
4768 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
4769 BN_GF2m_mod_exp_arr
4770 BN_GF2m_mod_sqrt_arr
4771 BN_GF2m_mod_solve_quad_arr
4772 BN_GF2m_poly2arr
4773 BN_GF2m_arr2poly
4774
4775 Conversion can be performed by the following functions:
4776
4777 BN_GF2m_poly2arr
4778 BN_GF2m_arr2poly
4779
4780 bntest.c has additional tests for binary polynomial arithmetic.
4781
4782 Two implementations for BN_GF2m_mod_div() are available.
4783 The default algorithm simply uses BN_GF2m_mod_inv() and
4784 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
4785 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
4786 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
4787
4788 [Sheueling Chang Shantz and Douglas Stebila
4789 (Sun Microsystems Laboratories)]
4790
4791 *) Add new error code 'ERR_R_DISABLED' that can be used when some
4792 functionality is disabled at compile-time.
4793 [Douglas Stebila <douglas.stebila@sun.com>]
4794
4795 *) Change default behaviour of 'openssl asn1parse' so that more
4796 information is visible when viewing, e.g., a certificate:
4797
4798 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
4799 mode the content of non-printable OCTET STRINGs is output in a
4800 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
4801 avoid the appearance of a printable string.
4802 [Nils Larsch <nla@trustcenter.de>]
4803
4804 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
4805 functions
4806 EC_GROUP_set_asn1_flag()
4807 EC_GROUP_get_asn1_flag()
4808 EC_GROUP_set_point_conversion_form()
4809 EC_GROUP_get_point_conversion_form()
4810 These control ASN1 encoding details:
4811 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
4812 has been set to OPENSSL_EC_NAMED_CURVE.
4813 - Points are encoded in uncompressed form by default; options for
4814 asn1_for are as for point2oct, namely
4815 POINT_CONVERSION_COMPRESSED
4816 POINT_CONVERSION_UNCOMPRESSED
4817 POINT_CONVERSION_HYBRID
4818
4819 Also add 'seed' and 'seed_len' members to EC_GROUP with access
4820 functions
4821 EC_GROUP_set_seed()
4822 EC_GROUP_get0_seed()
4823 EC_GROUP_get_seed_len()
4824 This is used only for ASN1 purposes (so far).
4825 [Nils Larsch <nla@trustcenter.de>]
4826
4827 *) Add 'field_type' member to EC_METHOD, which holds the NID
4828 of the appropriate field type OID. The new function
4829 EC_METHOD_get_field_type() returns this value.
4830 [Nils Larsch <nla@trustcenter.de>]
4831
4832 *) Add functions
4833 EC_POINT_point2bn()
4834 EC_POINT_bn2point()
4835 EC_POINT_point2hex()
4836 EC_POINT_hex2point()
4837 providing useful interfaces to EC_POINT_point2oct() and
4838 EC_POINT_oct2point().
4839 [Nils Larsch <nla@trustcenter.de>]
4840
4841 *) Change internals of the EC library so that the functions
4842 EC_GROUP_set_generator()
4843 EC_GROUP_get_generator()
4844 EC_GROUP_get_order()
4845 EC_GROUP_get_cofactor()
4846 are implemented directly in crypto/ec/ec_lib.c and not dispatched
4847 to methods, which would lead to unnecessary code duplication when
4848 adding different types of curves.
4849 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
4850
4851 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
4852 arithmetic, and such that modified wNAFs are generated
4853 (which avoid length expansion in many cases).
4854 [Bodo Moeller]
4855
4856 *) Add a function EC_GROUP_check_discriminant() (defined via
4857 EC_METHOD) that verifies that the curve discriminant is non-zero.
4858
4859 Add a function EC_GROUP_check() that makes some sanity tests
4860 on a EC_GROUP, its generator and order. This includes
4861 EC_GROUP_check_discriminant().
4862 [Nils Larsch <nla@trustcenter.de>]
4863
4864 *) Add ECDSA in new directory crypto/ecdsa/.
4865
4866 Add applications 'openssl ecparam' and 'openssl ecdsa'
4867 (these are based on 'openssl dsaparam' and 'openssl dsa').
4868
4869 ECDSA support is also included in various other files across the
4870 library. Most notably,
4871 - 'openssl req' now has a '-newkey ecdsa:file' option;
4872 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
4873 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
4874 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
4875 them suitable for ECDSA where domain parameters must be
4876 extracted before the specific public key;
4877 - ECDSA engine support has been added.
4878 [Nils Larsch <nla@trustcenter.de>]
4879
4880 *) Include some named elliptic curves, and add OIDs from X9.62,
4881 SECG, and WAP/WTLS. Each curve can be obtained from the new
4882 function
4883 EC_GROUP_new_by_curve_name(),
4884 and the list of available named curves can be obtained with
4885 EC_get_builtin_curves().
4886 Also add a 'curve_name' member to EC_GROUP objects, which can be
4887 accessed via
4888 EC_GROUP_set_curve_name()
4889 EC_GROUP_get_curve_name()
4890 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
4891
4892 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4893 was actually never needed) and in BN_mul(). The removal in BN_mul()
4894 required a small change in bn_mul_part_recursive() and the addition
4895 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4896 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4897 bn_sub_words() and bn_add_words() except they take arrays with
4898 differing sizes.
4899 [Richard Levitte]
4900
4901 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
4902
4903 *) Cleanse PEM buffers before freeing them since they may contain
4904 sensitive data.
4905 [Benjamin Bennett <ben@psc.edu>]
4906
4907 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4908 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4909 authentication-only ciphersuites.
4910 [Bodo Moeller]
4911
4912 *) Since AES128 and AES256 share a single mask bit in the logic of
4913 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4914 kludge to work properly if AES128 is available and AES256 isn't.
4915 [Victor Duchovni]
4916
4917 *) Expand security boundary to match 1.1.1 module.
4918 [Steve Henson]
4919
4920 *) Remove redundant features: hash file source, editing of test vectors
4921 modify fipsld to use external fips_premain.c signature.
4922 [Steve Henson]
4923
4924 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
4925 run algorithm test programs.
4926 [Steve Henson]
4927
4928 *) Make algorithm test programs more tolerant of whitespace.
4929 [Steve Henson]
4930
4931 *) Have SSL/TLS server implementation tolerate "mismatched" record
4932 protocol version while receiving ClientHello even if the
4933 ClientHello is fragmented. (The server can't insist on the
4934 particular protocol version it has chosen before the ServerHello
4935 message has informed the client about his choice.)
4936 [Bodo Moeller]
4937
4938 *) Load error codes if they are not already present instead of using a
4939 static variable. This allows them to be cleanly unloaded and reloaded.
4940 [Steve Henson]
4941
4942 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
4943
4944 *) Introduce limits to prevent malicious keys being able to
4945 cause a denial of service. (CVE-2006-2940)
4946 [Steve Henson, Bodo Moeller]
4947
4948 *) Fix ASN.1 parsing of certain invalid structures that can result
4949 in a denial of service. (CVE-2006-2937) [Steve Henson]
4950
4951 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4952 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4953
4954 *) Fix SSL client code which could crash if connecting to a
4955 malicious SSLv2 server. (CVE-2006-4343)
4956 [Tavis Ormandy and Will Drewry, Google Security Team]
4957
4958 *) Change ciphersuite string processing so that an explicit
4959 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
4960 will no longer include "AES128-SHA"), and any other similar
4961 ciphersuite (same bitmap) from *other* protocol versions (so that
4962 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
4963 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
4964 changes from 0.9.8b and 0.9.8d.
4965 [Bodo Moeller]
4966
4967 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
4968
4969 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4970 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4971
4972 *) Change the Unix randomness entropy gathering to use poll() when
4973 possible instead of select(), since the latter has some
4974 undesirable limitations.
4975 [Darryl Miles via Richard Levitte and Bodo Moeller]
4976
4977 *) Disable rogue ciphersuites:
4978
4979 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4980 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4981 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4982
4983 The latter two were purportedly from
4984 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4985 appear there.
4986
4987 Also deactive the remaining ciphersuites from
4988 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4989 unofficial, and the ID has long expired.
4990 [Bodo Moeller]
4991
4992 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4993 dual-core machines) and other potential thread-safety issues.
4994 [Bodo Moeller]
4995
4996 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4997
4998 *) Adapt fipsld and the build system to link against the validated FIPS
4999 module in FIPS mode.
5000 [Steve Henson]
5001
5002 *) Fixes for VC++ 2005 build under Windows.
5003 [Steve Henson]
5004
5005 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5006 from a Windows bash shell such as MSYS. It is autodetected from the
5007 "config" script when run from a VC++ environment. Modify standard VC++
5008 build to use fipscanister.o from the GNU make build.
5009 [Steve Henson]
5010
5011 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5012
5013 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5014 The value now differs depending on if you build for FIPS or not.
5015 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5016 safely run with a non-FIPSed libcrypto, as it may crash because of
5017 the difference induced by this change.
5018 [Andy Polyakov]
5019
5020 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5021
5022 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5023 (part of SSL_OP_ALL). This option used to disable the
5024 countermeasure against man-in-the-middle protocol-version
5025 rollback in the SSL 2.0 server implementation, which is a bad
5026 idea. (CVE-2005-2969)
5027
5028 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5029 for Information Security, National Institute of Advanced Industrial
5030 Science and Technology [AIST], Japan)]
5031
5032 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5033 mainly for FIPS compliance and not fully integrated at this stage.
5034 [Steve Henson]
5035
5036 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5037 the exponentiation using a fixed-length exponent. (Otherwise,
5038 the information leaked through timing could expose the secret key
5039 after many signatures; cf. Bleichenbacher's attack on DSA with
5040 biased k.)
5041 [Bodo Moeller]
5042
5043 *) Make a new fixed-window mod_exp implementation the default for
5044 RSA, DSA, and DH private-key operations so that the sequence of
5045 squares and multiplies and the memory access pattern are
5046 independent of the particular secret key. This will mitigate
5047 cache-timing and potential related attacks.
5048
5049 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5050 and this is automatically used by BN_mod_exp_mont() if the new flag
5051 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5052 will use this BN flag for private exponents unless the flag
5053 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5054 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5055
5056 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5057
5058 *) Change the client implementation for SSLv23_method() and
5059 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5060 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5061 (Previously, the SSL 2.0 backwards compatible Client Hello
5062 message format would be used even with SSL_OP_NO_SSLv2.)
5063 [Bodo Moeller]
5064
5065 *) Add support for smime-type MIME parameter in S/MIME messages which some
5066 clients need.
5067 [Steve Henson]
5068
5069 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5070 a threadsafe manner. Modify rsa code to use new function and add calls
5071 to dsa and dh code (which had race conditions before).
5072 [Steve Henson]
5073
5074 *) Include the fixed error library code in the C error file definitions
5075 instead of fixing them up at runtime. This keeps the error code
5076 structures constant.
5077 [Steve Henson]
5078
5079 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5080
5081 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5082 OpenSSL 0.9.8.]
5083
5084 *) Fixes for newer kerberos headers. NB: the casts are needed because
5085 the 'length' field is signed on one version and unsigned on another
5086 with no (?) obvious way to tell the difference, without these VC++
5087 complains. Also the "definition" of FAR (blank) is no longer included
5088 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5089 some needed definitions.
5090 [Steve Henson]
5091
5092 *) Undo Cygwin change.
5093 [Ulf Möller]
5094
5095 *) Added support for proxy certificates according to RFC 3820.
5096 Because they may be a security thread to unaware applications,
5097 they must be explicitely allowed in run-time. See
5098 docs/HOWTO/proxy_certificates.txt for further information.
5099 [Richard Levitte]
5100
5101 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5102
5103 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5104 server and client random values. Previously
5105 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5106 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5107
5108 This change has negligible security impact because:
5109
5110 1. Server and client random values still have 24 bytes of pseudo random
5111 data.
5112
5113 2. Server and client random values are sent in the clear in the initial
5114 handshake.
5115
5116 3. The master secret is derived using the premaster secret (48 bytes in
5117 size for static RSA ciphersuites) as well as client server and random
5118 values.
5119
5120 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5121 to our attention.
5122
5123 [Stephen Henson, reported by UK NISCC]
5124
5125 *) Use Windows randomness collection on Cygwin.
5126 [Ulf Möller]
5127
5128 *) Fix hang in EGD/PRNGD query when communication socket is closed
5129 prematurely by EGD/PRNGD.
5130 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5131
5132 *) Prompt for pass phrases when appropriate for PKCS12 input format.
5133 [Steve Henson]
5134
5135 *) Back-port of selected performance improvements from development
5136 branch, as well as improved support for PowerPC platforms.
5137 [Andy Polyakov]
5138
5139 *) Add lots of checks for memory allocation failure, error codes to indicate
5140 failure and freeing up memory if a failure occurs.
5141 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
5142
5143 *) Add new -passin argument to dgst.
5144 [Steve Henson]
5145
5146 *) Perform some character comparisons of different types in X509_NAME_cmp:
5147 this is needed for some certificates that reencode DNs into UTF8Strings
5148 (in violation of RFC3280) and can't or wont issue name rollover
5149 certificates.
5150 [Steve Henson]
5151
5152 *) Make an explicit check during certificate validation to see that
5153 the CA setting in each certificate on the chain is correct. As a
5154 side effect always do the following basic checks on extensions,
5155 not just when there's an associated purpose to the check:
5156
5157 - if there is an unhandled critical extension (unless the user
5158 has chosen to ignore this fault)
5159 - if the path length has been exceeded (if one is set at all)
5160 - that certain extensions fit the associated purpose (if one has
5161 been given)
5162 [Richard Levitte]
5163
5164 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
5165
5166 *) Avoid a race condition when CRLs are checked in a multi threaded
5167 environment. This would happen due to the reordering of the revoked
5168 entries during signature checking and serial number lookup. Now the
5169 encoding is cached and the serial number sort performed under a lock.
5170 Add new STACK function sk_is_sorted().
5171 [Steve Henson]
5172
5173 *) Add Delta CRL to the extension code.
5174 [Steve Henson]
5175
5176 *) Various fixes to s3_pkt.c so alerts are sent properly.
5177 [David Holmes <d.holmes@f5.com>]
5178
5179 *) Reduce the chances of duplicate issuer name and serial numbers (in
5180 violation of RFC3280) using the OpenSSL certificate creation utilities.
5181 This is done by creating a random 64 bit value for the initial serial
5182 number when a serial number file is created or when a self signed
5183 certificate is created using 'openssl req -x509'. The initial serial
5184 number file is created using 'openssl x509 -next_serial' in CA.pl
5185 rather than being initialized to 1.
5186 [Steve Henson]
5187
5188 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
5189
5190 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5191 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5192 [Joe Orton, Steve Henson]
5193
5194 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
5195 (CVE-2004-0112)
5196 [Joe Orton, Steve Henson]
5197
5198 *) Make it possible to have multiple active certificates with the same
5199 subject in the CA index file. This is done only if the keyword
5200 'unique_subject' is set to 'no' in the main CA section (default
5201 if 'CA_default') of the configuration file. The value is saved
5202 with the database itself in a separate index attribute file,
5203 named like the index file with '.attr' appended to the name.
5204 [Richard Levitte]
5205
5206 *) X509 verify fixes. Disable broken certificate workarounds when
5207 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
5208 keyUsage extension present. Don't accept CRLs with unhandled critical
5209 extensions: since verify currently doesn't process CRL extensions this
5210 rejects a CRL with *any* critical extensions. Add new verify error codes
5211 for these cases.
5212 [Steve Henson]
5213
5214 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
5215 A clarification of RFC2560 will require the use of OCTET STRINGs and
5216 some implementations cannot handle the current raw format. Since OpenSSL
5217 copies and compares OCSP nonces as opaque blobs without any attempt at
5218 parsing them this should not create any compatibility issues.
5219 [Steve Henson]
5220
5221 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
5222 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
5223 this HMAC (and other) operations are several times slower than OpenSSL
5224 < 0.9.7.
5225 [Steve Henson]
5226
5227 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
5228 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5229
5230 *) Use the correct content when signing type "other".
5231 [Steve Henson]
5232
5233 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
5234
5235 *) Fix various bugs revealed by running the NISCC test suite:
5236
5237 Stop out of bounds reads in the ASN1 code when presented with
5238 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5239
5240 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
5241
5242 If verify callback ignores invalid public key errors don't try to check
5243 certificate signature with the NULL public key.
5244
5245 [Steve Henson]
5246
5247 *) New -ignore_err option in ocsp application to stop the server
5248 exiting on the first error in a request.
5249 [Steve Henson]
5250
5251 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5252 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5253 specifications.
5254 [Steve Henson]
5255
5256 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5257 extra data after the compression methods not only for TLS 1.0
5258 but also for SSL 3.0 (as required by the specification).
5259 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5260
5261 *) Change X509_certificate_type() to mark the key as exported/exportable
5262 when it's 512 *bits* long, not 512 bytes.
5263 [Richard Levitte]
5264
5265 *) Change AES_cbc_encrypt() so it outputs exact multiple of
5266 blocks during encryption.
5267 [Richard Levitte]
5268
5269 *) Various fixes to base64 BIO and non blocking I/O. On write
5270 flushes were not handled properly if the BIO retried. On read
5271 data was not being buffered properly and had various logic bugs.
5272 This also affects blocking I/O when the data being decoded is a
5273 certain size.
5274 [Steve Henson]
5275
5276 *) Various S/MIME bugfixes and compatibility changes:
5277 output correct application/pkcs7 MIME type if
5278 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
5279 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
5280 of files as .eml work). Correctly handle very long lines in MIME
5281 parser.
5282 [Steve Henson]
5283
5284 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
5285
5286 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5287 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5288 a protocol version number mismatch like a decryption error
5289 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5290 [Bodo Moeller]
5291
5292 *) Turn on RSA blinding by default in the default implementation
5293 to avoid a timing attack. Applications that don't want it can call
5294 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5295 They would be ill-advised to do so in most cases.
5296 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5297
5298 *) Change RSA blinding code so that it works when the PRNG is not
5299 seeded (in this case, the secret RSA exponent is abused as
5300 an unpredictable seed -- if it is not unpredictable, there
5301 is no point in blinding anyway). Make RSA blinding thread-safe
5302 by remembering the creator's thread ID in rsa->blinding and
5303 having all other threads use local one-time blinding factors
5304 (this requires more computation than sharing rsa->blinding, but
5305 avoids excessive locking; and if an RSA object is not shared
5306 between threads, blinding will still be very fast).
5307 [Bodo Moeller]
5308
5309 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
5310 ENGINE as defaults for all supported algorithms irrespective of
5311 the 'flags' parameter. 'flags' is now honoured, so applications
5312 should make sure they are passing it correctly.
5313 [Geoff Thorpe]
5314
5315 *) Target "mingw" now allows native Windows code to be generated in
5316 the Cygwin environment as well as with the MinGW compiler.
5317 [Ulf Moeller]
5318
5319 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
5320
5321 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5322 via timing by performing a MAC computation even if incorrrect
5323 block cipher padding has been found. This is a countermeasure
5324 against active attacks where the attacker has to distinguish
5325 between bad padding and a MAC verification error. (CVE-2003-0078)
5326
5327 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5328 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5329 Martin Vuagnoux (EPFL, Ilion)]
5330
5331 *) Make the no-err option work as intended. The intention with no-err
5332 is not to have the whole error stack handling routines removed from
5333 libcrypto, it's only intended to remove all the function name and
5334 reason texts, thereby removing some of the footprint that may not
5335 be interesting if those errors aren't displayed anyway.
5336
5337 NOTE: it's still possible for any application or module to have it's
5338 own set of error texts inserted. The routines are there, just not
5339 used by default when no-err is given.
5340 [Richard Levitte]
5341
5342 *) Add support for FreeBSD on IA64.
5343 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
5344
5345 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
5346 Kerberos function mit_des_cbc_cksum(). Before this change,
5347 the value returned by DES_cbc_cksum() was like the one from
5348 mit_des_cbc_cksum(), except the bytes were swapped.
5349 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
5350
5351 *) Allow an application to disable the automatic SSL chain building.
5352 Before this a rather primitive chain build was always performed in
5353 ssl3_output_cert_chain(): an application had no way to send the
5354 correct chain if the automatic operation produced an incorrect result.
5355
5356 Now the chain builder is disabled if either:
5357
5358 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
5359
5360 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
5361
5362 The reasoning behind this is that an application would not want the
5363 auto chain building to take place if extra chain certificates are
5364 present and it might also want a means of sending no additional
5365 certificates (for example the chain has two certificates and the
5366 root is omitted).
5367 [Steve Henson]
5368
5369 *) Add the possibility to build without the ENGINE framework.
5370 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5371
5372 *) Under Win32 gmtime() can return NULL: check return value in
5373 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
5374 [Steve Henson]
5375
5376 *) DSA routines: under certain error conditions uninitialized BN objects
5377 could be freed. Solution: make sure initialization is performed early
5378 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
5379 Nils Larsch <nla@trustcenter.de> via PR#459)
5380 [Lutz Jaenicke]
5381
5382 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
5383 checked on reconnect on the client side, therefore session resumption
5384 could still fail with a "ssl session id is different" error. This
5385 behaviour is masked when SSL_OP_ALL is used due to
5386 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
5387 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5388 followup to PR #377.
5389 [Lutz Jaenicke]
5390
5391 *) IA-32 assembler support enhancements: unified ELF targets, support
5392 for SCO/Caldera platforms, fix for Cygwin shared build.
5393 [Andy Polyakov]
5394
5395 *) Add support for FreeBSD on sparc64. As a consequence, support for
5396 FreeBSD on non-x86 processors is separate from x86 processors on
5397 the config script, much like the NetBSD support.
5398 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
5399
5400 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
5401
5402 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
5403 OpenSSL 0.9.7.]
5404
5405 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
5406 code (06) was taken as the first octet of the session ID and the last
5407 octet was ignored consequently. As a result SSLv2 client side session
5408 caching could not have worked due to the session ID mismatch between
5409 client and server.
5410 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
5411 PR #377.
5412 [Lutz Jaenicke]
5413
5414 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
5415 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
5416 removed entirely.
5417 [Richard Levitte]
5418
5419 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
5420 seems that in spite of existing for more than a year, many application
5421 author have done nothing to provide the necessary callbacks, which
5422 means that this particular engine will not work properly anywhere.
5423 This is a very unfortunate situation which forces us, in the name
5424 of usability, to give the hw_ncipher.c a static lock, which is part
5425 of libcrypto.
5426 NOTE: This is for the 0.9.7 series ONLY. This hack will never
5427 appear in 0.9.8 or later. We EXPECT application authors to have
5428 dealt properly with this when 0.9.8 is released (unless we actually
5429 make such changes in the libcrypto locking code that changes will
5430 have to be made anyway).
5431 [Richard Levitte]
5432
5433 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
5434 octets have been read, EOF or an error occurs. Without this change
5435 some truncated ASN1 structures will not produce an error.
5436 [Steve Henson]
5437
5438 *) Disable Heimdal support, since it hasn't been fully implemented.
5439 Still give the possibility to force the use of Heimdal, but with
5440 warnings and a request that patches get sent to openssl-dev.
5441 [Richard Levitte]
5442
5443 *) Add the VC-CE target, introduce the WINCE sysname, and add
5444 INSTALL.WCE and appropriate conditionals to make it build.
5445 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
5446
5447 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
5448 cygssl-x.y.z.dll, where x, y and z are the major, minor and
5449 edit numbers of the version.
5450 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5451
5452 *) Introduce safe string copy and catenation functions
5453 (BUF_strlcpy() and BUF_strlcat()).
5454 [Ben Laurie (CHATS) and Richard Levitte]
5455
5456 *) Avoid using fixed-size buffers for one-line DNs.
5457 [Ben Laurie (CHATS)]
5458
5459 *) Add BUF_MEM_grow_clean() to avoid information leakage when
5460 resizing buffers containing secrets, and use where appropriate.
5461 [Ben Laurie (CHATS)]
5462
5463 *) Avoid using fixed size buffers for configuration file location.
5464 [Ben Laurie (CHATS)]
5465
5466 *) Avoid filename truncation for various CA files.
5467 [Ben Laurie (CHATS)]
5468
5469 *) Use sizeof in preference to magic numbers.
5470 [Ben Laurie (CHATS)]
5471
5472 *) Avoid filename truncation in cert requests.
5473 [Ben Laurie (CHATS)]
5474
5475 *) Add assertions to check for (supposedly impossible) buffer
5476 overflows.
5477 [Ben Laurie (CHATS)]
5478
5479 *) Don't cache truncated DNS entries in the local cache (this could
5480 potentially lead to a spoofing attack).
5481 [Ben Laurie (CHATS)]
5482
5483 *) Fix various buffers to be large enough for hex/decimal
5484 representations in a platform independent manner.
5485 [Ben Laurie (CHATS)]
5486
5487 *) Add CRYPTO_realloc_clean() to avoid information leakage when
5488 resizing buffers containing secrets, and use where appropriate.
5489 [Ben Laurie (CHATS)]
5490
5491 *) Add BIO_indent() to avoid much slightly worrying code to do
5492 indents.
5493 [Ben Laurie (CHATS)]
5494
5495 *) Convert sprintf()/BIO_puts() to BIO_printf().
5496 [Ben Laurie (CHATS)]
5497
5498 *) buffer_gets() could terminate with the buffer only half
5499 full. Fixed.
5500 [Ben Laurie (CHATS)]
5501
5502 *) Add assertions to prevent user-supplied crypto functions from
5503 overflowing internal buffers by having large block sizes, etc.
5504 [Ben Laurie (CHATS)]
5505
5506 *) New OPENSSL_assert() macro (similar to assert(), but enabled
5507 unconditionally).
5508 [Ben Laurie (CHATS)]
5509
5510 *) Eliminate unused copy of key in RC4.
5511 [Ben Laurie (CHATS)]
5512
5513 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
5514 [Ben Laurie (CHATS)]
5515
5516 *) Fix off-by-one error in EGD path.
5517 [Ben Laurie (CHATS)]
5518
5519 *) If RANDFILE path is too long, ignore instead of truncating.
5520 [Ben Laurie (CHATS)]
5521
5522 *) Eliminate unused and incorrectly sized X.509 structure
5523 CBCParameter.
5524 [Ben Laurie (CHATS)]
5525
5526 *) Eliminate unused and dangerous function knumber().
5527 [Ben Laurie (CHATS)]
5528
5529 *) Eliminate unused and dangerous structure, KSSL_ERR.
5530 [Ben Laurie (CHATS)]
5531
5532 *) Protect against overlong session ID context length in an encoded
5533 session object. Since these are local, this does not appear to be
5534 exploitable.
5535 [Ben Laurie (CHATS)]
5536
5537 *) Change from security patch (see 0.9.6e below) that did not affect
5538 the 0.9.6 release series:
5539
5540 Remote buffer overflow in SSL3 protocol - an attacker could
5541 supply an oversized master key in Kerberos-enabled versions.
5542 (CVE-2002-0657)
5543 [Ben Laurie (CHATS)]
5544
5545 *) Change the SSL kerb5 codes to match RFC 2712.
5546 [Richard Levitte]
5547
5548 *) Make -nameopt work fully for req and add -reqopt switch.
5549 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
5550
5551 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
5552 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
5553
5554 *) Make sure tests can be performed even if the corresponding algorithms
5555 have been removed entirely. This was also the last step to make
5556 OpenSSL compilable with DJGPP under all reasonable conditions.
5557 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
5558
5559 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
5560 to allow version independent disabling of normally unselected ciphers,
5561 which may be activated as a side-effect of selecting a single cipher.
5562
5563 (E.g., cipher list string "RSA" enables ciphersuites that are left
5564 out of "ALL" because they do not provide symmetric encryption.
5565 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
5566 [Lutz Jaenicke, Bodo Moeller]
5567
5568 *) Add appropriate support for separate platform-dependent build
5569 directories. The recommended way to make a platform-dependent
5570 build directory is the following (tested on Linux), maybe with
5571 some local tweaks:
5572
5573 # Place yourself outside of the OpenSSL source tree. In
5574 # this example, the environment variable OPENSSL_SOURCE
5575 # is assumed to contain the absolute OpenSSL source directory.
5576 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
5577 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
5578 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
5579 mkdir -p `dirname $F`
5580 ln -s $OPENSSL_SOURCE/$F $F
5581 done
5582
5583 To be absolutely sure not to disturb the source tree, a "make clean"
5584 is a good thing. If it isn't successfull, don't worry about it,
5585 it probably means the source directory is very clean.
5586 [Richard Levitte]
5587
5588 *) Make sure any ENGINE control commands make local copies of string
5589 pointers passed to them whenever necessary. Otherwise it is possible
5590 the caller may have overwritten (or deallocated) the original string
5591 data when a later ENGINE operation tries to use the stored values.
5592 [Götz Babin-Ebell <babinebell@trustcenter.de>]
5593
5594 *) Improve diagnostics in file reading and command-line digests.
5595 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
5596
5597 *) Add AES modes CFB and OFB to the object database. Correct an
5598 error in AES-CFB decryption.
5599 [Richard Levitte]
5600
5601 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
5602 allows existing EVP_CIPHER_CTX structures to be reused after
5603 calling EVP_*Final(). This behaviour is used by encryption
5604 BIOs and some applications. This has the side effect that
5605 applications must explicitly clean up cipher contexts with
5606 EVP_CIPHER_CTX_cleanup() or they will leak memory.
5607 [Steve Henson]
5608
5609 *) Check the values of dna and dnb in bn_mul_recursive before calling
5610 bn_mul_comba (a non zero value means the a or b arrays do not contain
5611 n2 elements) and fallback to bn_mul_normal if either is not zero.
5612 [Steve Henson]
5613
5614 *) Fix escaping of non-ASCII characters when using the -subj option
5615 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
5616 [Lutz Jaenicke]
5617
5618 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
5619 form for "surname", serialNumber has no short form.
5620 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
5621 therefore remove "mail" short name for "internet 7".
5622 The OID for unique identifiers in X509 certificates is
5623 x500UniqueIdentifier, not uniqueIdentifier.
5624 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
5625 [Lutz Jaenicke]
5626
5627 *) Add an "init" command to the ENGINE config module and auto initialize
5628 ENGINEs. Without any "init" command the ENGINE will be initialized
5629 after all ctrl commands have been executed on it. If init=1 the
5630 ENGINE is initailized at that point (ctrls before that point are run
5631 on the uninitialized ENGINE and after on the initialized one). If
5632 init=0 then the ENGINE will not be iniatialized at all.
5633 [Steve Henson]
5634
5635 *) Fix the 'app_verify_callback' interface so that the user-defined
5636 argument is actually passed to the callback: In the
5637 SSL_CTX_set_cert_verify_callback() prototype, the callback
5638 declaration has been changed from
5639 int (*cb)()
5640 into
5641 int (*cb)(X509_STORE_CTX *,void *);
5642 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
5643 i=s->ctx->app_verify_callback(&ctx)
5644 has been changed into
5645 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
5646
5647 To update applications using SSL_CTX_set_cert_verify_callback(),
5648 a dummy argument can be added to their callback functions.
5649 [D. K. Smetters <smetters@parc.xerox.com>]
5650
5651 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
5652 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
5653
5654 *) Add and OPENSSL_LOAD_CONF define which will cause
5655 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
5656 This allows older applications to transparently support certain
5657 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
5658 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
5659 load the config file and OPENSSL_add_all_algorithms_conf() which will
5660 always load it have also been added.
5661 [Steve Henson]
5662
5663 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
5664 Adjust NIDs and EVP layer.
5665 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5666
5667 *) Config modules support in openssl utility.
5668
5669 Most commands now load modules from the config file,
5670 though in a few (such as version) this isn't done
5671 because it couldn't be used for anything.
5672
5673 In the case of ca and req the config file used is
5674 the same as the utility itself: that is the -config
5675 command line option can be used to specify an
5676 alternative file.
5677 [Steve Henson]
5678
5679 *) Move default behaviour from OPENSSL_config(). If appname is NULL
5680 use "openssl_conf" if filename is NULL use default openssl config file.
5681 [Steve Henson]
5682
5683 *) Add an argument to OPENSSL_config() to allow the use of an alternative
5684 config section name. Add a new flag to tolerate a missing config file
5685 and move code to CONF_modules_load_file().
5686 [Steve Henson]
5687
5688 *) Support for crypto accelerator cards from Accelerated Encryption
5689 Processing, www.aep.ie. (Use engine 'aep')
5690 The support was copied from 0.9.6c [engine] and adapted/corrected
5691 to work with the new engine framework.
5692 [AEP Inc. and Richard Levitte]
5693
5694 *) Support for SureWare crypto accelerator cards from Baltimore
5695 Technologies. (Use engine 'sureware')
5696 The support was copied from 0.9.6c [engine] and adapted
5697 to work with the new engine framework.
5698 [Richard Levitte]
5699
5700 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
5701 make the newer ENGINE framework commands for the CHIL engine work.
5702 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
5703
5704 *) Make it possible to produce shared libraries on ReliantUNIX.
5705 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
5706
5707 *) Add the configuration target debug-linux-ppro.
5708 Make 'openssl rsa' use the general key loading routines
5709 implemented in apps.c, and make those routines able to
5710 handle the key format FORMAT_NETSCAPE and the variant
5711 FORMAT_IISSGC.
5712 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5713
5714 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5715 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5716
5717 *) Add -keyform to rsautl, and document -engine.
5718 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
5719
5720 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
5721 BIO_R_NO_SUCH_FILE error code rather than the generic
5722 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
5723 [Ben Laurie]
5724
5725 *) Add new functions
5726 ERR_peek_last_error
5727 ERR_peek_last_error_line
5728 ERR_peek_last_error_line_data.
5729 These are similar to
5730 ERR_peek_error
5731 ERR_peek_error_line
5732 ERR_peek_error_line_data,
5733 but report on the latest error recorded rather than the first one
5734 still in the error queue.
5735 [Ben Laurie, Bodo Moeller]
5736
5737 *) default_algorithms option in ENGINE config module. This allows things
5738 like:
5739 default_algorithms = ALL
5740 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
5741 [Steve Henson]
5742
5743 *) Prelminary ENGINE config module.
5744 [Steve Henson]
5745
5746 *) New experimental application configuration code.
5747 [Steve Henson]
5748
5749 *) Change the AES code to follow the same name structure as all other
5750 symmetric ciphers, and behave the same way. Move everything to
5751 the directory crypto/aes, thereby obsoleting crypto/rijndael.
5752 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
5753
5754 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
5755 [Ben Laurie and Theo de Raadt]
5756
5757 *) Add option to output public keys in req command.
5758 [Massimiliano Pala madwolf@openca.org]
5759
5760 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
5761 (up to about 10% better than before for P-192 and P-224).
5762 [Bodo Moeller]
5763
5764 *) New functions/macros
5765
5766 SSL_CTX_set_msg_callback(ctx, cb)
5767 SSL_CTX_set_msg_callback_arg(ctx, arg)
5768 SSL_set_msg_callback(ssl, cb)
5769 SSL_set_msg_callback_arg(ssl, arg)
5770
5771 to request calling a callback function
5772
5773 void cb(int write_p, int version, int content_type,
5774 const void *buf, size_t len, SSL *ssl, void *arg)
5775
5776 whenever a protocol message has been completely received
5777 (write_p == 0) or sent (write_p == 1). Here 'version' is the
5778 protocol version according to which the SSL library interprets
5779 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
5780 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
5781 the content type as defined in the SSL 3.0/TLS 1.0 protocol
5782 specification (change_cipher_spec(20), alert(21), handshake(22)).
5783 'buf' and 'len' point to the actual message, 'ssl' to the
5784 SSL object, and 'arg' is the application-defined value set by
5785 SSL[_CTX]_set_msg_callback_arg().
5786
5787 'openssl s_client' and 'openssl s_server' have new '-msg' options
5788 to enable a callback that displays all protocol messages.
5789 [Bodo Moeller]
5790
5791 *) Change the shared library support so shared libraries are built as
5792 soon as the corresponding static library is finished, and thereby get
5793 openssl and the test programs linked against the shared library.
5794 This still only happens when the keyword "shard" has been given to
5795 the configuration scripts.
5796
5797 NOTE: shared library support is still an experimental thing, and
5798 backward binary compatibility is still not guaranteed.
5799 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
5800
5801 *) Add support for Subject Information Access extension.
5802 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
5803
5804 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
5805 additional bytes when new memory had to be allocated, not just
5806 when reusing an existing buffer.
5807 [Bodo Moeller]
5808
5809 *) New command line and configuration option 'utf8' for the req command.
5810 This allows field values to be specified as UTF8 strings.
5811 [Steve Henson]
5812
5813 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
5814 runs for the former and machine-readable output for the latter.
5815 [Ben Laurie]
5816
5817 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
5818 of the e-mail address in the DN (i.e., it will go into a certificate
5819 extension only). The new configuration file option 'email_in_dn = no'
5820 has the same effect.
5821 [Massimiliano Pala madwolf@openca.org]
5822
5823 *) Change all functions with names starting with des_ to be starting
5824 with DES_ instead. Add wrappers that are compatible with libdes,
5825 but are named _ossl_old_des_*. Finally, add macros that map the
5826 des_* symbols to the corresponding _ossl_old_des_* if libdes
5827 compatibility is desired. If OpenSSL 0.9.6c compatibility is
5828 desired, the des_* symbols will be mapped to DES_*, with one
5829 exception.
5830
5831 Since we provide two compatibility mappings, the user needs to
5832 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
5833 compatibility is desired. The default (i.e., when that macro
5834 isn't defined) is OpenSSL 0.9.6c compatibility.
5835
5836 There are also macros that enable and disable the support of old
5837 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
5838 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
5839 are defined, the default will apply: to support the old des routines.
5840
5841 In either case, one must include openssl/des.h to get the correct
5842 definitions. Do not try to just include openssl/des_old.h, that
5843 won't work.
5844
5845 NOTE: This is a major break of an old API into a new one. Software
5846 authors are encouraged to switch to the DES_ style functions. Some
5847 time in the future, des_old.h and the libdes compatibility functions
5848 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
5849 default), and then completely removed.
5850 [Richard Levitte]
5851
5852 *) Test for certificates which contain unsupported critical extensions.
5853 If such a certificate is found during a verify operation it is
5854 rejected by default: this behaviour can be overridden by either
5855 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
5856 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
5857 X509_supported_extension() has also been added which returns 1 if a
5858 particular extension is supported.
5859 [Steve Henson]
5860
5861 *) Modify the behaviour of EVP cipher functions in similar way to digests
5862 to retain compatibility with existing code.
5863 [Steve Henson]
5864
5865 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
5866 compatibility with existing code. In particular the 'ctx' parameter does
5867 not have to be to be initialized before the call to EVP_DigestInit() and
5868 it is tidied up after a call to EVP_DigestFinal(). New function
5869 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
5870 EVP_MD_CTX_copy() changed to not require the destination to be
5871 initialized valid and new function EVP_MD_CTX_copy_ex() added which
5872 requires the destination to be valid.
5873
5874 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
5875 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
5876 [Steve Henson]
5877
5878 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
5879 so that complete 'Handshake' protocol structures are kept in memory
5880 instead of overwriting 'msg_type' and 'length' with 'body' data.
5881 [Bodo Moeller]
5882
5883 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
5884 [Massimo Santin via Richard Levitte]
5885
5886 *) Major restructuring to the underlying ENGINE code. This includes
5887 reduction of linker bloat, separation of pure "ENGINE" manipulation
5888 (initialisation, etc) from functionality dealing with implementations
5889 of specific crypto iterfaces. This change also introduces integrated
5890 support for symmetric ciphers and digest implementations - so ENGINEs
5891 can now accelerate these by providing EVP_CIPHER and EVP_MD
5892 implementations of their own. This is detailed in crypto/engine/README
5893 as it couldn't be adequately described here. However, there are a few
5894 API changes worth noting - some RSA, DSA, DH, and RAND functions that
5895 were changed in the original introduction of ENGINE code have now
5896 reverted back - the hooking from this code to ENGINE is now a good
5897 deal more passive and at run-time, operations deal directly with
5898 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
5899 dereferencing through an ENGINE pointer any more. Also, the ENGINE
5900 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
5901 they were not being used by the framework as there is no concept of a
5902 BIGNUM_METHOD and they could not be generalised to the new
5903 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
5904 ENGINE_cpy() has been removed as it cannot be consistently defined in
5905 the new code.
5906 [Geoff Thorpe]
5907
5908 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
5909 [Steve Henson]
5910
5911 *) Change mkdef.pl to sort symbols that get the same entry number,
5912 and make sure the automatically generated functions ERR_load_*
5913 become part of libeay.num as well.
5914 [Richard Levitte]
5915
5916 *) New function SSL_renegotiate_pending(). This returns true once
5917 renegotiation has been requested (either SSL_renegotiate() call
5918 or HelloRequest/ClientHello receveived from the peer) and becomes
5919 false once a handshake has been completed.
5920 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
5921 sends a HelloRequest, but does not ensure that a handshake takes
5922 place. SSL_renegotiate_pending() is useful for checking if the
5923 client has followed the request.)
5924 [Bodo Moeller]
5925
5926 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
5927 By default, clients may request session resumption even during
5928 renegotiation (if session ID contexts permit); with this option,
5929 session resumption is possible only in the first handshake.
5930
5931 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
5932 more bits available for options that should not be part of
5933 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
5934 [Bodo Moeller]
5935
5936 *) Add some demos for certificate and certificate request creation.
5937 [Steve Henson]
5938
5939 *) Make maximum certificate chain size accepted from the peer application
5940 settable (SSL*_get/set_max_cert_list()), as proposed by
5941 "Douglas E. Engert" <deengert@anl.gov>.
5942 [Lutz Jaenicke]
5943
5944 *) Add support for shared libraries for Unixware-7
5945 (Boyd Lynn Gerber <gerberb@zenez.com>).
5946 [Lutz Jaenicke]
5947
5948 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
5949 be done prior to destruction. Use this to unload error strings from
5950 ENGINEs that load their own error strings. NB: This adds two new API
5951 functions to "get" and "set" this destroy handler in an ENGINE.
5952 [Geoff Thorpe]
5953
5954 *) Alter all existing ENGINE implementations (except "openssl" and
5955 "openbsd") to dynamically instantiate their own error strings. This
5956 makes them more flexible to be built both as statically-linked ENGINEs
5957 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
5958 Also, add stub code to each that makes building them as self-contained
5959 shared-libraries easier (see README.ENGINE).
5960 [Geoff Thorpe]
5961
5962 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
5963 implementations into applications that are completely implemented in
5964 self-contained shared-libraries. The "dynamic" ENGINE exposes control
5965 commands that can be used to configure what shared-library to load and
5966 to control aspects of the way it is handled. Also, made an update to
5967 the README.ENGINE file that brings its information up-to-date and
5968 provides some information and instructions on the "dynamic" ENGINE
5969 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
5970 [Geoff Thorpe]
5971
5972 *) Make it possible to unload ranges of ERR strings with a new
5973 "ERR_unload_strings" function.
5974 [Geoff Thorpe]
5975
5976 *) Add a copy() function to EVP_MD.
5977 [Ben Laurie]
5978
5979 *) Make EVP_MD routines take a context pointer instead of just the
5980 md_data void pointer.
5981 [Ben Laurie]
5982
5983 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
5984 that the digest can only process a single chunk of data
5985 (typically because it is provided by a piece of
5986 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
5987 is only going to provide a single chunk of data, and hence the
5988 framework needn't accumulate the data for oneshot drivers.
5989 [Ben Laurie]
5990
5991 *) As with "ERR", make it possible to replace the underlying "ex_data"
5992 functions. This change also alters the storage and management of global
5993 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
5994 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
5995 index counters. The API functions that use this state have been changed
5996 to take a "class_index" rather than pointers to the class's local STACK
5997 and counter, and there is now an API function to dynamically create new
5998 classes. This centralisation allows us to (a) plug a lot of the
5999 thread-safety problems that existed, and (b) makes it possible to clean
6000 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6001 such data would previously have always leaked in application code and
6002 workarounds were in place to make the memory debugging turn a blind eye
6003 to it. Application code that doesn't use this new function will still
6004 leak as before, but their memory debugging output will announce it now
6005 rather than letting it slide.
6006
6007 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6008 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6009 has a return value to indicate success or failure.
6010 [Geoff Thorpe]
6011
6012 *) Make it possible to replace the underlying "ERR" functions such that the
6013 global state (2 LHASH tables and 2 locks) is only used by the "default"
6014 implementation. This change also adds two functions to "get" and "set"
6015 the implementation prior to it being automatically set the first time
6016 any other ERR function takes place. Ie. an application can call "get",
6017 pass the return value to a module it has just loaded, and that module
6018 can call its own "set" function using that value. This means the
6019 module's "ERR" operations will use (and modify) the error state in the
6020 application and not in its own statically linked copy of OpenSSL code.
6021 [Geoff Thorpe]
6022
6023 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6024 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6025 the operation, and provides a more encapsulated way for external code
6026 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6027 to use these functions rather than manually incrementing the counts.
6028
6029 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6030 [Geoff Thorpe]
6031
6032 *) Add EVP test program.
6033 [Ben Laurie]
6034
6035 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6036 [Ben Laurie]
6037
6038 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6039 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6040 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6041 These allow a CRL to be built without having to access X509_CRL fields
6042 directly. Modify 'ca' application to use new functions.
6043 [Steve Henson]
6044
6045 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6046 bug workarounds. Rollback attack detection is a security feature.
6047 The problem will only arise on OpenSSL servers when TLSv1 is not
6048 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6049 Software authors not wanting to support TLSv1 will have special reasons
6050 for their choice and can explicitly enable this option.
6051 [Bodo Moeller, Lutz Jaenicke]
6052
6053 *) Rationalise EVP so it can be extended: don't include a union of
6054 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6055 (similar to those existing for EVP_CIPHER_CTX).
6056 Usage example:
6057
6058 EVP_MD_CTX md;
6059
6060 EVP_MD_CTX_init(&md); /* new function call */
6061 EVP_DigestInit(&md, EVP_sha1());
6062 EVP_DigestUpdate(&md, in, len);
6063 EVP_DigestFinal(&md, out, NULL);
6064 EVP_MD_CTX_cleanup(&md); /* new function call */
6065
6066 [Ben Laurie]
6067
6068 *) Make DES key schedule conform to the usual scheme, as well as
6069 correcting its structure. This means that calls to DES functions
6070 now have to pass a pointer to a des_key_schedule instead of a
6071 plain des_key_schedule (which was actually always a pointer
6072 anyway): E.g.,
6073
6074 des_key_schedule ks;
6075
6076 des_set_key_checked(..., &ks);
6077 des_ncbc_encrypt(..., &ks, ...);
6078
6079 (Note that a later change renames 'des_...' into 'DES_...'.)
6080 [Ben Laurie]
6081
6082 *) Initial reduction of linker bloat: the use of some functions, such as
6083 PEM causes large amounts of unused functions to be linked in due to
6084 poor organisation. For example pem_all.c contains every PEM function
6085 which has a knock on effect of linking in large amounts of (unused)
6086 ASN1 code. Grouping together similar functions and splitting unrelated
6087 functions prevents this.
6088 [Steve Henson]
6089
6090 *) Cleanup of EVP macros.
6091 [Ben Laurie]
6092
6093 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6094 correct _ecb suffix.
6095 [Ben Laurie]
6096
6097 *) Add initial OCSP responder support to ocsp application. The
6098 revocation information is handled using the text based index
6099 use by the ca application. The responder can either handle
6100 requests generated internally, supplied in files (for example
6101 via a CGI script) or using an internal minimal server.
6102 [Steve Henson]
6103
6104 *) Add configuration choices to get zlib compression for TLS.
6105 [Richard Levitte]
6106
6107 *) Changes to Kerberos SSL for RFC 2712 compliance:
6108 1. Implemented real KerberosWrapper, instead of just using
6109 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6110 2. Implemented optional authenticator field of KerberosWrapper.
6111
6112 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6113 and authenticator structs; see crypto/krb5/.
6114
6115 Generalized Kerberos calls to support multiple Kerberos libraries.
6116 [Vern Staats <staatsvr@asc.hpc.mil>,
6117 Jeffrey Altman <jaltman@columbia.edu>
6118 via Richard Levitte]
6119
6120 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6121 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6122 values for each of the key sizes rather than having just
6123 parameters (and 'speed' generating keys each time).
6124 [Geoff Thorpe]
6125
6126 *) Speed up EVP routines.
6127 Before:
6128 encrypt
6129 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6130 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6131 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6132 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6133 decrypt
6134 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
6135 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
6136 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
6137 After:
6138 encrypt
6139 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
6140 decrypt
6141 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
6142 [Ben Laurie]
6143
6144 *) Added the OS2-EMX target.
6145 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
6146
6147 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
6148 to support NCONF routines in extension code. New function CONF_set_nconf()
6149 to allow functions which take an NCONF to also handle the old LHASH
6150 structure: this means that the old CONF compatible routines can be
6151 retained (in particular wrt extensions) without having to duplicate the
6152 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
6153 [Steve Henson]
6154
6155 *) Enhance the general user interface with mechanisms for inner control
6156 and with possibilities to have yes/no kind of prompts.
6157 [Richard Levitte]
6158
6159 *) Change all calls to low level digest routines in the library and
6160 applications to use EVP. Add missing calls to HMAC_cleanup() and
6161 don't assume HMAC_CTX can be copied using memcpy().
6162 [Verdon Walker <VWalker@novell.com>, Steve Henson]
6163
6164 *) Add the possibility to control engines through control names but with
6165 arbitrary arguments instead of just a string.
6166 Change the key loaders to take a UI_METHOD instead of a callback
6167 function pointer. NOTE: this breaks binary compatibility with earlier
6168 versions of OpenSSL [engine].
6169 Adapt the nCipher code for these new conditions and add a card insertion
6170 callback.
6171 [Richard Levitte]
6172
6173 *) Enhance the general user interface with mechanisms to better support
6174 dialog box interfaces, application-defined prompts, the possibility
6175 to use defaults (for example default passwords from somewhere else)
6176 and interrupts/cancellations.
6177 [Richard Levitte]
6178
6179 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
6180 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
6181 [Steve Henson]
6182
6183 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
6184 tidy up some unnecessarily weird code in 'sk_new()').
6185 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
6186
6187 *) Change the key loading routines for ENGINEs to use the same kind
6188 callback (pem_password_cb) as all other routines that need this
6189 kind of callback.
6190 [Richard Levitte]
6191
6192 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
6193 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
6194 than this minimum value is recommended.
6195 [Lutz Jaenicke]
6196
6197 *) New random seeder for OpenVMS, using the system process statistics
6198 that are easily reachable.
6199 [Richard Levitte]
6200
6201 *) Windows apparently can't transparently handle global
6202 variables defined in DLLs. Initialisations such as:
6203
6204 const ASN1_ITEM *it = &ASN1_INTEGER_it;
6205
6206 wont compile. This is used by the any applications that need to
6207 declare their own ASN1 modules. This was fixed by adding the option
6208 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
6209 needed for static libraries under Win32.
6210 [Steve Henson]
6211
6212 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
6213 setting of purpose and trust fields. New X509_STORE trust and
6214 purpose functions and tidy up setting in other SSL functions.
6215 [Steve Henson]
6216
6217 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
6218 structure. These are inherited by X509_STORE_CTX when it is
6219 initialised. This allows various defaults to be set in the
6220 X509_STORE structure (such as flags for CRL checking and custom
6221 purpose or trust settings) for functions which only use X509_STORE_CTX
6222 internally such as S/MIME.
6223
6224 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
6225 trust settings if they are not set in X509_STORE. This allows X509_STORE
6226 purposes and trust (in S/MIME for example) to override any set by default.
6227
6228 Add command line options for CRL checking to smime, s_client and s_server
6229 applications.
6230 [Steve Henson]
6231
6232 *) Initial CRL based revocation checking. If the CRL checking flag(s)
6233 are set then the CRL is looked up in the X509_STORE structure and
6234 its validity and signature checked, then if the certificate is found
6235 in the CRL the verify fails with a revoked error.
6236
6237 Various new CRL related callbacks added to X509_STORE_CTX structure.
6238
6239 Command line options added to 'verify' application to support this.
6240
6241 This needs some additional work, such as being able to handle multiple
6242 CRLs with different times, extension based lookup (rather than just
6243 by subject name) and ultimately more complete V2 CRL extension
6244 handling.
6245 [Steve Henson]
6246
6247 *) Add a general user interface API (crypto/ui/). This is designed
6248 to replace things like des_read_password and friends (backward
6249 compatibility functions using this new API are provided).
6250 The purpose is to remove prompting functions from the DES code
6251 section as well as provide for prompting through dialog boxes in
6252 a window system and the like.
6253 [Richard Levitte]
6254
6255 *) Add "ex_data" support to ENGINE so implementations can add state at a
6256 per-structure level rather than having to store it globally.
6257 [Geoff]
6258
6259 *) Make it possible for ENGINE structures to be copied when retrieved by
6260 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
6261 This causes the "original" ENGINE structure to act like a template,
6262 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
6263 operational state can be localised to each ENGINE structure, despite the
6264 fact they all share the same "methods". New ENGINE structures returned in
6265 this case have no functional references and the return value is the single
6266 structural reference. This matches the single structural reference returned
6267 by ENGINE_by_id() normally, when it is incremented on the pre-existing
6268 ENGINE structure.
6269 [Geoff]
6270
6271 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
6272 needs to match any other type at all we need to manually clear the
6273 tag cache.
6274 [Steve Henson]
6275
6276 *) Changes to the "openssl engine" utility to include;
6277 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
6278 about an ENGINE's available control commands.
6279 - executing control commands from command line arguments using the
6280 '-pre' and '-post' switches. '-post' is only used if '-t' is
6281 specified and the ENGINE is successfully initialised. The syntax for
6282 the individual commands are colon-separated, for example;
6283 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
6284 [Geoff]
6285
6286 *) New dynamic control command support for ENGINEs. ENGINEs can now
6287 declare their own commands (numbers), names (strings), descriptions,
6288 and input types for run-time discovery by calling applications. A
6289 subset of these commands are implicitly classed as "executable"
6290 depending on their input type, and only these can be invoked through
6291 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
6292 can be based on user input, config files, etc). The distinction is
6293 that "executable" commands cannot return anything other than a boolean
6294 result and can only support numeric or string input, whereas some
6295 discoverable commands may only be for direct use through
6296 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
6297 pointers, or other custom uses. The "executable" commands are to
6298 support parameterisations of ENGINE behaviour that can be
6299 unambiguously defined by ENGINEs and used consistently across any
6300 OpenSSL-based application. Commands have been added to all the
6301 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
6302 control over shared-library paths without source code alterations.
6303 [Geoff]
6304
6305 *) Changed all ENGINE implementations to dynamically allocate their
6306 ENGINEs rather than declaring them statically. Apart from this being
6307 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
6308 this also allows the implementations to compile without using the
6309 internal engine_int.h header.
6310 [Geoff]
6311
6312 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
6313 'const' value. Any code that should be able to modify a RAND_METHOD
6314 should already have non-const pointers to it (ie. they should only
6315 modify their own ones).
6316 [Geoff]
6317
6318 *) Made a variety of little tweaks to the ENGINE code.
6319 - "atalla" and "ubsec" string definitions were moved from header files
6320 to C code. "nuron" string definitions were placed in variables
6321 rather than hard-coded - allowing parameterisation of these values
6322 later on via ctrl() commands.
6323 - Removed unused "#if 0"'d code.
6324 - Fixed engine list iteration code so it uses ENGINE_free() to release
6325 structural references.
6326 - Constified the RAND_METHOD element of ENGINE structures.
6327 - Constified various get/set functions as appropriate and added
6328 missing functions (including a catch-all ENGINE_cpy that duplicates
6329 all ENGINE values onto a new ENGINE except reference counts/state).
6330 - Removed NULL parameter checks in get/set functions. Setting a method
6331 or function to NULL is a way of cancelling out a previously set
6332 value. Passing a NULL ENGINE parameter is just plain stupid anyway
6333 and doesn't justify the extra error symbols and code.
6334 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
6335 flags from engine_int.h to engine.h.
6336 - Changed prototypes for ENGINE handler functions (init(), finish(),
6337 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
6338 [Geoff]
6339
6340 *) Implement binary inversion algorithm for BN_mod_inverse in addition
6341 to the algorithm using long division. The binary algorithm can be
6342 used only if the modulus is odd. On 32-bit systems, it is faster
6343 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
6344 roughly 5-15% for 256-bit moduli), so we use it only for moduli
6345 up to 450 bits. In 64-bit environments, the binary algorithm
6346 appears to be advantageous for much longer moduli; here we use it
6347 for moduli up to 2048 bits.
6348 [Bodo Moeller]
6349
6350 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
6351 could not support the combine flag in choice fields.
6352 [Steve Henson]
6353
6354 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
6355 extensions from a certificate request to the certificate.
6356 [Steve Henson]
6357
6358 *) Allow multiple 'certopt' and 'nameopt' options to be separated
6359 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
6360 file: this allows the display of the certificate about to be
6361 signed to be customised, to allow certain fields to be included
6362 or excluded and extension details. The old system didn't display
6363 multicharacter strings properly, omitted fields not in the policy
6364 and couldn't display additional details such as extensions.
6365 [Steve Henson]
6366
6367 *) Function EC_POINTs_mul for multiple scalar multiplication
6368 of an arbitrary number of elliptic curve points
6369 \sum scalars[i]*points[i],
6370 optionally including the generator defined for the EC_GROUP:
6371 scalar*generator + \sum scalars[i]*points[i].
6372
6373 EC_POINT_mul is a simple wrapper function for the typical case
6374 that the point list has just one item (besides the optional
6375 generator).
6376 [Bodo Moeller]
6377
6378 *) First EC_METHODs for curves over GF(p):
6379
6380 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
6381 operations and provides various method functions that can also
6382 operate with faster implementations of modular arithmetic.
6383
6384 EC_GFp_mont_method() reuses most functions that are part of
6385 EC_GFp_simple_method, but uses Montgomery arithmetic.
6386
6387 [Bodo Moeller; point addition and point doubling
6388 implementation directly derived from source code provided by
6389 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
6390
6391 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
6392 crypto/ec/ec_lib.c):
6393
6394 Curves are EC_GROUP objects (with an optional group generator)
6395 based on EC_METHODs that are built into the library.
6396
6397 Points are EC_POINT objects based on EC_GROUP objects.
6398
6399 Most of the framework would be able to handle curves over arbitrary
6400 finite fields, but as there are no obvious types for fields other
6401 than GF(p), some functions are limited to that for now.
6402 [Bodo Moeller]
6403
6404 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
6405 that the file contains a complete HTTP response.
6406 [Richard Levitte]
6407
6408 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
6409 change the def and num file printf format specifier from "%-40sXXX"
6410 to "%-39s XXX". The latter will always guarantee a space after the
6411 field while the former will cause them to run together if the field
6412 is 40 of more characters long.
6413 [Steve Henson]
6414
6415 *) Constify the cipher and digest 'method' functions and structures
6416 and modify related functions to take constant EVP_MD and EVP_CIPHER
6417 pointers.
6418 [Steve Henson]
6419
6420 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
6421 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
6422 [Bodo Moeller]
6423
6424 *) Modify EVP_Digest*() routines so they now return values. Although the
6425 internal software routines can never fail additional hardware versions
6426 might.
6427 [Steve Henson]
6428
6429 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
6430
6431 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
6432 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
6433
6434 ASN1 error codes
6435 ERR_R_NESTED_ASN1_ERROR
6436 ...
6437 ERR_R_MISSING_ASN1_EOS
6438 were 4 .. 9, conflicting with
6439 ERR_LIB_RSA (= ERR_R_RSA_LIB)
6440 ...
6441 ERR_LIB_PEM (= ERR_R_PEM_LIB).
6442 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
6443
6444 Add new error code 'ERR_R_INTERNAL_ERROR'.
6445 [Bodo Moeller]
6446
6447 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
6448 suffices.
6449 [Bodo Moeller]
6450
6451 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
6452 sets the subject name for a new request or supersedes the
6453 subject name in a given request. Formats that can be parsed are
6454 'CN=Some Name, OU=myOU, C=IT'
6455 and
6456 'CN=Some Name/OU=myOU/C=IT'.
6457
6458 Add options '-batch' and '-verbose' to 'openssl req'.
6459 [Massimiliano Pala <madwolf@hackmasters.net>]
6460
6461 *) Introduce the possibility to access global variables through
6462 functions on platform were that's the best way to handle exporting
6463 global variables in shared libraries. To enable this functionality,
6464 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
6465 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
6466 is normally done by Configure or something similar).
6467
6468 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
6469 in the source file (foo.c) like this:
6470
6471 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
6472 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
6473
6474 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
6475 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
6476
6477 OPENSSL_DECLARE_GLOBAL(int,foo);
6478 #define foo OPENSSL_GLOBAL_REF(foo)
6479 OPENSSL_DECLARE_GLOBAL(double,bar);
6480 #define bar OPENSSL_GLOBAL_REF(bar)
6481
6482 The #defines are very important, and therefore so is including the
6483 header file everywhere where the defined globals are used.
6484
6485 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
6486 of ASN.1 items, but that structure is a bit different.
6487
6488 The largest change is in util/mkdef.pl which has been enhanced with
6489 better and easier to understand logic to choose which symbols should
6490 go into the Windows .def files as well as a number of fixes and code
6491 cleanup (among others, algorithm keywords are now sorted
6492 lexicographically to avoid constant rewrites).
6493 [Richard Levitte]
6494
6495 *) In BN_div() keep a copy of the sign of 'num' before writing the
6496 result to 'rm' because if rm==num the value will be overwritten
6497 and produce the wrong result if 'num' is negative: this caused
6498 problems with BN_mod() and BN_nnmod().
6499 [Steve Henson]
6500
6501 *) Function OCSP_request_verify(). This checks the signature on an
6502 OCSP request and verifies the signer certificate. The signer
6503 certificate is just checked for a generic purpose and OCSP request
6504 trust settings.
6505 [Steve Henson]
6506
6507 *) Add OCSP_check_validity() function to check the validity of OCSP
6508 responses. OCSP responses are prepared in real time and may only
6509 be a few seconds old. Simply checking that the current time lies
6510 between thisUpdate and nextUpdate max reject otherwise valid responses
6511 caused by either OCSP responder or client clock inaccuracy. Instead
6512 we allow thisUpdate and nextUpdate to fall within a certain period of
6513 the current time. The age of the response can also optionally be
6514 checked. Two new options -validity_period and -status_age added to
6515 ocsp utility.
6516 [Steve Henson]
6517
6518 *) If signature or public key algorithm is unrecognized print out its
6519 OID rather that just UNKNOWN.
6520 [Steve Henson]
6521
6522 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
6523 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
6524 ID to be generated from the issuer certificate alone which can then be
6525 passed to OCSP_id_issuer_cmp().
6526 [Steve Henson]
6527
6528 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
6529 ASN1 modules to export functions returning ASN1_ITEM pointers
6530 instead of the ASN1_ITEM structures themselves. This adds several
6531 new macros which allow the underlying ASN1 function/structure to
6532 be accessed transparently. As a result code should not use ASN1_ITEM
6533 references directly (such as &X509_it) but instead use the relevant
6534 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
6535 use of the new ASN1 code on platforms where exporting structures
6536 is problematical (for example in shared libraries) but exporting
6537 functions returning pointers to structures is not.
6538 [Steve Henson]
6539
6540 *) Add support for overriding the generation of SSL/TLS session IDs.
6541 These callbacks can be registered either in an SSL_CTX or per SSL.
6542 The purpose of this is to allow applications to control, if they wish,
6543 the arbitrary values chosen for use as session IDs, particularly as it
6544 can be useful for session caching in multiple-server environments. A
6545 command-line switch for testing this (and any client code that wishes
6546 to use such a feature) has been added to "s_server".
6547 [Geoff Thorpe, Lutz Jaenicke]
6548
6549 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
6550 of the form '#if defined(...) || defined(...) || ...' and
6551 '#if !defined(...) && !defined(...) && ...'. This also avoids
6552 the growing number of special cases it was previously handling.
6553 [Richard Levitte]
6554
6555 *) Make all configuration macros available for application by making
6556 sure they are available in opensslconf.h, by giving them names starting
6557 with "OPENSSL_" to avoid conflicts with other packages and by making
6558 sure e_os2.h will cover all platform-specific cases together with
6559 opensslconf.h.
6560 Additionally, it is now possible to define configuration/platform-
6561 specific names (called "system identities"). In the C code, these
6562 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
6563 macro with the name beginning with "OPENSSL_SYS_", which is determined
6564 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
6565 what is available.
6566 [Richard Levitte]
6567
6568 *) New option -set_serial to 'req' and 'x509' this allows the serial
6569 number to use to be specified on the command line. Previously self
6570 signed certificates were hard coded with serial number 0 and the
6571 CA options of 'x509' had to use a serial number in a file which was
6572 auto incremented.
6573 [Steve Henson]
6574
6575 *) New options to 'ca' utility to support V2 CRL entry extensions.
6576 Currently CRL reason, invalidity date and hold instruction are
6577 supported. Add new CRL extensions to V3 code and some new objects.
6578 [Steve Henson]
6579
6580 *) New function EVP_CIPHER_CTX_set_padding() this is used to
6581 disable standard block padding (aka PKCS#5 padding) in the EVP
6582 API, which was previously mandatory. This means that the data is
6583 not padded in any way and so the total length much be a multiple
6584 of the block size, otherwise an error occurs.
6585 [Steve Henson]
6586
6587 *) Initial (incomplete) OCSP SSL support.
6588 [Steve Henson]
6589
6590 *) New function OCSP_parse_url(). This splits up a URL into its host,
6591 port and path components: primarily to parse OCSP URLs. New -url
6592 option to ocsp utility.
6593 [Steve Henson]
6594
6595 *) New nonce behavior. The return value of OCSP_check_nonce() now
6596 reflects the various checks performed. Applications can decide
6597 whether to tolerate certain situations such as an absent nonce
6598 in a response when one was present in a request: the ocsp application
6599 just prints out a warning. New function OCSP_add1_basic_nonce()
6600 this is to allow responders to include a nonce in a response even if
6601 the request is nonce-less.
6602 [Steve Henson]
6603
6604 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
6605 skipped when using openssl x509 multiple times on a single input file,
6606 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
6607 [Bodo Moeller]
6608
6609 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
6610 set string type: to handle setting ASN1_TIME structures. Fix ca
6611 utility to correctly initialize revocation date of CRLs.
6612 [Steve Henson]
6613
6614 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
6615 the clients preferred ciphersuites and rather use its own preferences.
6616 Should help to work around M$ SGC (Server Gated Cryptography) bug in
6617 Internet Explorer by ensuring unchanged hash method during stepup.
6618 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
6619 [Lutz Jaenicke]
6620
6621 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
6622 to aes and add a new 'exist' option to print out symbols that don't
6623 appear to exist.
6624 [Steve Henson]
6625
6626 *) Additional options to ocsp utility to allow flags to be set and
6627 additional certificates supplied.
6628 [Steve Henson]
6629
6630 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
6631 OCSP client a number of certificate to only verify the response
6632 signature against.
6633 [Richard Levitte]
6634
6635 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
6636 handle the new API. Currently only ECB, CBC modes supported. Add new
6637 AES OIDs.
6638
6639 Add TLS AES ciphersuites as described in RFC3268, "Advanced
6640 Encryption Standard (AES) Ciphersuites for Transport Layer
6641 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
6642 not enabled by default and were not part of the "ALL" ciphersuite
6643 alias because they were not yet official; they could be
6644 explicitly requested by specifying the "AESdraft" ciphersuite
6645 group alias. In the final release of OpenSSL 0.9.7, the group
6646 alias is called "AES" and is part of "ALL".)
6647 [Ben Laurie, Steve Henson, Bodo Moeller]
6648
6649 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
6650 request to response.
6651 [Steve Henson]
6652
6653 *) Functions for OCSP responders. OCSP_request_onereq_count(),
6654 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
6655 extract information from a certificate request. OCSP_response_create()
6656 creates a response and optionally adds a basic response structure.
6657 OCSP_basic_add1_status() adds a complete single response to a basic
6658 response and returns the OCSP_SINGLERESP structure just added (to allow
6659 extensions to be included for example). OCSP_basic_add1_cert() adds a
6660 certificate to a basic response and OCSP_basic_sign() signs a basic
6661 response with various flags. New helper functions ASN1_TIME_check()
6662 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
6663 (converts ASN1_TIME to GeneralizedTime).
6664 [Steve Henson]
6665
6666 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
6667 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
6668 structure from a certificate. X509_pubkey_digest() digests the public_key
6669 contents: this is used in various key identifiers.
6670 [Steve Henson]
6671
6672 *) Make sk_sort() tolerate a NULL argument.
6673 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
6674
6675 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
6676 passed by the function are trusted implicitly. If any of them signed the
6677 response then it is assumed to be valid and is not verified.
6678 [Steve Henson]
6679
6680 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
6681 to data. This was previously part of the PKCS7 ASN1 code. This
6682 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
6683 [Steve Henson, reported by Kenneth R. Robinette
6684 <support@securenetterm.com>]
6685
6686 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
6687 routines: without these tracing memory leaks is very painful.
6688 Fix leaks in PKCS12 and PKCS7 routines.
6689 [Steve Henson]
6690
6691 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
6692 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
6693 effectively meant GeneralizedTime would never be used. Now it
6694 is initialised to -1 but X509_time_adj() now has to check the value
6695 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
6696 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
6697 [Steve Henson, reported by Kenneth R. Robinette
6698 <support@securenetterm.com>]
6699
6700 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
6701 result in a zero length in the ASN1_INTEGER structure which was
6702 not consistent with the structure when d2i_ASN1_INTEGER() was used
6703 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
6704 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
6705 where it did not print out a minus for negative ASN1_INTEGER.
6706 [Steve Henson]
6707
6708 *) Add summary printout to ocsp utility. The various functions which
6709 convert status values to strings have been renamed to:
6710 OCSP_response_status_str(), OCSP_cert_status_str() and
6711 OCSP_crl_reason_str() and are no longer static. New options
6712 to verify nonce values and to disable verification. OCSP response
6713 printout format cleaned up.
6714 [Steve Henson]
6715
6716 *) Add additional OCSP certificate checks. These are those specified
6717 in RFC2560. This consists of two separate checks: the CA of the
6718 certificate being checked must either be the OCSP signer certificate
6719 or the issuer of the OCSP signer certificate. In the latter case the
6720 OCSP signer certificate must contain the OCSP signing extended key
6721 usage. This check is performed by attempting to match the OCSP
6722 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
6723 in the OCSP_CERTID structures of the response.
6724 [Steve Henson]
6725
6726 *) Initial OCSP certificate verification added to OCSP_basic_verify()
6727 and related routines. This uses the standard OpenSSL certificate
6728 verify routines to perform initial checks (just CA validity) and
6729 to obtain the certificate chain. Then additional checks will be
6730 performed on the chain. Currently the root CA is checked to see
6731 if it is explicitly trusted for OCSP signing. This is used to set
6732 a root CA as a global signing root: that is any certificate that
6733 chains to that CA is an acceptable OCSP signing certificate.
6734 [Steve Henson]
6735
6736 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
6737 extensions from a separate configuration file.
6738 As when reading extensions from the main configuration file,
6739 the '-extensions ...' option may be used for specifying the
6740 section to use.
6741 [Massimiliano Pala <madwolf@comune.modena.it>]
6742
6743 *) New OCSP utility. Allows OCSP requests to be generated or
6744 read. The request can be sent to a responder and the output
6745 parsed, outputed or printed in text form. Not complete yet:
6746 still needs to check the OCSP response validity.
6747 [Steve Henson]
6748
6749 *) New subcommands for 'openssl ca':
6750 'openssl ca -status <serial>' prints the status of the cert with
6751 the given serial number (according to the index file).
6752 'openssl ca -updatedb' updates the expiry status of certificates
6753 in the index file.
6754 [Massimiliano Pala <madwolf@comune.modena.it>]
6755
6756 *) New '-newreq-nodes' command option to CA.pl. This is like
6757 '-newreq', but calls 'openssl req' with the '-nodes' option
6758 so that the resulting key is not encrypted.
6759 [Damien Miller <djm@mindrot.org>]
6760
6761 *) New configuration for the GNU Hurd.
6762 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
6763
6764 *) Initial code to implement OCSP basic response verify. This
6765 is currently incomplete. Currently just finds the signer's
6766 certificate and verifies the signature on the response.
6767 [Steve Henson]
6768
6769 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
6770 value of OPENSSLDIR. This is available via the new '-d' option
6771 to 'openssl version', and is also included in 'openssl version -a'.
6772 [Bodo Moeller]
6773
6774 *) Allowing defining memory allocation callbacks that will be given
6775 file name and line number information in additional arguments
6776 (a const char* and an int). The basic functionality remains, as
6777 well as the original possibility to just replace malloc(),
6778 realloc() and free() by functions that do not know about these
6779 additional arguments. To register and find out the current
6780 settings for extended allocation functions, the following
6781 functions are provided:
6782
6783 CRYPTO_set_mem_ex_functions
6784 CRYPTO_set_locked_mem_ex_functions
6785 CRYPTO_get_mem_ex_functions
6786 CRYPTO_get_locked_mem_ex_functions
6787
6788 These work the same way as CRYPTO_set_mem_functions and friends.
6789 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
6790 extended allocation function is enabled.
6791 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
6792 a conventional allocation function is enabled.
6793 [Richard Levitte, Bodo Moeller]
6794
6795 *) Finish off removing the remaining LHASH function pointer casts.
6796 There should no longer be any prototype-casting required when using
6797 the LHASH abstraction, and any casts that remain are "bugs". See
6798 the callback types and macros at the head of lhash.h for details
6799 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
6800 [Geoff Thorpe]
6801
6802 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
6803 If /dev/[u]random devices are not available or do not return enough
6804 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
6805 be queried.
6806 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
6807 /etc/entropy will be queried once each in this sequence, quering stops
6808 when enough entropy was collected without querying more sockets.
6809 [Lutz Jaenicke]
6810
6811 *) Change the Unix RAND_poll() variant to be able to poll several
6812 random devices, as specified by DEVRANDOM, until a sufficient amount
6813 of data has been collected. We spend at most 10 ms on each file
6814 (select timeout) and read in non-blocking mode. DEVRANDOM now
6815 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
6816 (previously it was just the string "/dev/urandom"), so on typical
6817 platforms the 10 ms delay will never occur.
6818 Also separate out the Unix variant to its own file, rand_unix.c.
6819 For VMS, there's a currently-empty rand_vms.c.
6820 [Richard Levitte]
6821
6822 *) Move OCSP client related routines to ocsp_cl.c. These
6823 provide utility functions which an application needing
6824 to issue a request to an OCSP responder and analyse the
6825 response will typically need: as opposed to those which an
6826 OCSP responder itself would need which will be added later.
6827
6828 OCSP_request_sign() signs an OCSP request with an API similar
6829 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
6830 response. OCSP_response_get1_basic() extracts basic response
6831 from response. OCSP_resp_find_status(): finds and extracts status
6832 information from an OCSP_CERTID structure (which will be created
6833 when the request structure is built). These are built from lower
6834 level functions which work on OCSP_SINGLERESP structures but
6835 wont normally be used unless the application wishes to examine
6836 extensions in the OCSP response for example.
6837
6838 Replace nonce routines with a pair of functions.
6839 OCSP_request_add1_nonce() adds a nonce value and optionally
6840 generates a random value. OCSP_check_nonce() checks the
6841 validity of the nonce in an OCSP response.
6842 [Steve Henson]
6843
6844 *) Change function OCSP_request_add() to OCSP_request_add0_id().
6845 This doesn't copy the supplied OCSP_CERTID and avoids the
6846 need to free up the newly created id. Change return type
6847 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
6848 This can then be used to add extensions to the request.
6849 Deleted OCSP_request_new(), since most of its functionality
6850 is now in OCSP_REQUEST_new() (and the case insensitive name
6851 clash) apart from the ability to set the request name which
6852 will be added elsewhere.
6853 [Steve Henson]
6854
6855 *) Update OCSP API. Remove obsolete extensions argument from
6856 various functions. Extensions are now handled using the new
6857 OCSP extension code. New simple OCSP HTTP function which
6858 can be used to send requests and parse the response.
6859 [Steve Henson]
6860
6861 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
6862 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
6863 uses the special reorder version of SET OF to sort the attributes
6864 and reorder them to match the encoded order. This resolves a long
6865 standing problem: a verify on a PKCS7 structure just after signing
6866 it used to fail because the attribute order did not match the
6867 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
6868 it uses the received order. This is necessary to tolerate some broken
6869 software that does not order SET OF. This is handled by encoding
6870 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
6871 to produce the required SET OF.
6872 [Steve Henson]
6873
6874 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
6875 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
6876 files to get correct declarations of the ASN.1 item variables.
6877 [Richard Levitte]
6878
6879 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
6880 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
6881 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
6882 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
6883 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
6884 ASN1_ITEM and no wrapper functions.
6885 [Steve Henson]
6886
6887 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
6888 replace the old function pointer based I/O routines. Change most of
6889 the *_d2i_bio() and *_d2i_fp() functions to use these.
6890 [Steve Henson]
6891
6892 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
6893 lines, recognice more "algorithms" that can be deselected, and make
6894 it complain about algorithm deselection that isn't recognised.
6895 [Richard Levitte]
6896
6897 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
6898 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
6899 to use new functions. Add NO_ASN1_OLD which can be set to remove
6900 some old style ASN1 functions: this can be used to determine if old
6901 code will still work when these eventually go away.
6902 [Steve Henson]
6903
6904 *) New extension functions for OCSP structures, these follow the
6905 same conventions as certificates and CRLs.
6906 [Steve Henson]
6907
6908 *) New function X509V3_add1_i2d(). This automatically encodes and
6909 adds an extension. Its behaviour can be customised with various
6910 flags to append, replace or delete. Various wrappers added for
6911 certifcates and CRLs.
6912 [Steve Henson]
6913
6914 *) Fix to avoid calling the underlying ASN1 print routine when
6915 an extension cannot be parsed. Correct a typo in the
6916 OCSP_SERVICELOC extension. Tidy up print OCSP format.
6917 [Steve Henson]
6918
6919 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
6920 entries for variables.
6921 [Steve Henson]
6922
6923 *) Add functionality to apps/openssl.c for detecting locking
6924 problems: As the program is single-threaded, all we have
6925 to do is register a locking callback using an array for
6926 storing which locks are currently held by the program.
6927 [Bodo Moeller]
6928
6929 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
6930 SSL_get_ex_data_X509_STORE_idx(), which is used in
6931 ssl_verify_cert_chain() and thus can be called at any time
6932 during TLS/SSL handshakes so that thread-safety is essential.
6933 Unfortunately, the ex_data design is not at all suited
6934 for multi-threaded use, so it probably should be abolished.
6935 [Bodo Moeller]
6936
6937 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
6938 [Broadcom, tweaked and integrated by Geoff Thorpe]
6939
6940 *) Move common extension printing code to new function
6941 X509V3_print_extensions(). Reorganise OCSP print routines and
6942 implement some needed OCSP ASN1 functions. Add OCSP extensions.
6943 [Steve Henson]
6944
6945 *) New function X509_signature_print() to remove duplication in some
6946 print routines.
6947 [Steve Henson]
6948
6949 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
6950 set (this was treated exactly the same as SET OF previously). This
6951 is used to reorder the STACK representing the structure to match the
6952 encoding. This will be used to get round a problem where a PKCS7
6953 structure which was signed could not be verified because the STACK
6954 order did not reflect the encoded order.
6955 [Steve Henson]
6956
6957 *) Reimplement the OCSP ASN1 module using the new code.
6958 [Steve Henson]
6959
6960 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
6961 for its ASN1 operations. The old style function pointers still exist
6962 for now but they will eventually go away.
6963 [Steve Henson]
6964
6965 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
6966 completely replaces the old ASN1 functionality with a table driven
6967 encoder and decoder which interprets an ASN1_ITEM structure describing
6968 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
6969 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
6970 has also been converted to the new form.
6971 [Steve Henson]
6972
6973 *) Change BN_mod_exp_recp so that negative moduli are tolerated
6974 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
6975 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
6976 for negative moduli.
6977 [Bodo Moeller]
6978
6979 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
6980 of not touching the result's sign bit.
6981 [Bodo Moeller]
6982
6983 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
6984 set.
6985 [Bodo Moeller]
6986
6987 *) Changed the LHASH code to use prototypes for callbacks, and created
6988 macros to declare and implement thin (optionally static) functions
6989 that provide type-safety and avoid function pointer casting for the
6990 type-specific callbacks.
6991 [Geoff Thorpe]
6992
6993 *) Added Kerberos Cipher Suites to be used with TLS, as written in
6994 RFC 2712.
6995 [Veers Staats <staatsvr@asc.hpc.mil>,
6996 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
6997
6998 *) Reformat the FAQ so the different questions and answers can be divided
6999 in sections depending on the subject.
7000 [Richard Levitte]
7001
7002 *) Have the zlib compression code load ZLIB.DLL dynamically under
7003 Windows.
7004 [Richard Levitte]
7005
7006 *) New function BN_mod_sqrt for computing square roots modulo a prime
7007 (using the probabilistic Tonelli-Shanks algorithm unless
7008 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7009 be handled deterministically).
7010 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7011
7012 *) Make BN_mod_inverse faster by explicitly handling small quotients
7013 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7014 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7015 [Bodo Moeller]
7016
7017 *) New function BN_kronecker.
7018 [Bodo Moeller]
7019
7020 *) Fix BN_gcd so that it works on negative inputs; the result is
7021 positive unless both parameters are zero.
7022 Previously something reasonably close to an infinite loop was
7023 possible because numbers could be growing instead of shrinking
7024 in the implementation of Euclid's algorithm.
7025 [Bodo Moeller]
7026
7027 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7028 sign of the number in question.
7029
7030 Fix BN_is_word(a,w) to work correctly for w == 0.
7031
7032 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7033 because its test if the absolute value of 'a' equals 'w'.
7034 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7035 it exists mostly for use in the implementations of BN_is_zero(),
7036 BN_is_one(), and BN_is_word().
7037 [Bodo Moeller]
7038
7039 *) New function BN_swap.
7040 [Bodo Moeller]
7041
7042 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7043 the exponentiation functions are more likely to produce reasonable
7044 results on negative inputs.
7045 [Bodo Moeller]
7046
7047 *) Change BN_mod_mul so that the result is always non-negative.
7048 Previously, it could be negative if one of the factors was negative;
7049 I don't think anyone really wanted that behaviour.
7050 [Bodo Moeller]
7051
7052 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7053 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7054 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7055 and add new functions:
7056
7057 BN_nnmod
7058 BN_mod_sqr
7059 BN_mod_add
7060 BN_mod_add_quick
7061 BN_mod_sub
7062 BN_mod_sub_quick
7063 BN_mod_lshift1
7064 BN_mod_lshift1_quick
7065 BN_mod_lshift
7066 BN_mod_lshift_quick
7067
7068 These functions always generate non-negative results.
7069
7070 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7071 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7072
7073 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7074 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7075 be reduced modulo m.
7076 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7077
7078 #if 0
7079 The following entry accidentily appeared in the CHANGES file
7080 distributed with OpenSSL 0.9.7. The modifications described in
7081 it do *not* apply to OpenSSL 0.9.7.
7082
7083 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7084 was actually never needed) and in BN_mul(). The removal in BN_mul()
7085 required a small change in bn_mul_part_recursive() and the addition
7086 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7087 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7088 bn_sub_words() and bn_add_words() except they take arrays with
7089 differing sizes.
7090 [Richard Levitte]
7091 #endif
7092
7093 *) In 'openssl passwd', verify passwords read from the terminal
7094 unless the '-salt' option is used (which usually means that
7095 verification would just waste user's time since the resulting
7096 hash is going to be compared with some given password hash)
7097 or the new '-noverify' option is used.
7098
7099 This is an incompatible change, but it does not affect
7100 non-interactive use of 'openssl passwd' (passwords on the command
7101 line, '-stdin' option, '-in ...' option) and thus should not
7102 cause any problems.
7103 [Bodo Moeller]
7104
7105 *) Remove all references to RSAref, since there's no more need for it.
7106 [Richard Levitte]
7107
7108 *) Make DSO load along a path given through an environment variable
7109 (SHLIB_PATH) with shl_load().
7110 [Richard Levitte]
7111
7112 *) Constify the ENGINE code as a result of BIGNUM constification.
7113 Also constify the RSA code and most things related to it. In a
7114 few places, most notable in the depth of the ASN.1 code, ugly
7115 casts back to non-const were required (to be solved at a later
7116 time)
7117 [Richard Levitte]
7118
7119 *) Make it so the openssl application has all engines loaded by default.
7120 [Richard Levitte]
7121
7122 *) Constify the BIGNUM routines a little more.
7123 [Richard Levitte]
7124
7125 *) Add the following functions:
7126
7127 ENGINE_load_cswift()
7128 ENGINE_load_chil()
7129 ENGINE_load_atalla()
7130 ENGINE_load_nuron()
7131 ENGINE_load_builtin_engines()
7132
7133 That way, an application can itself choose if external engines that
7134 are built-in in OpenSSL shall ever be used or not. The benefit is
7135 that applications won't have to be linked with libdl or other dso
7136 libraries unless it's really needed.
7137
7138 Changed 'openssl engine' to load all engines on demand.
7139 Changed the engine header files to avoid the duplication of some
7140 declarations (they differed!).
7141 [Richard Levitte]
7142
7143 *) 'openssl engine' can now list capabilities.
7144 [Richard Levitte]
7145
7146 *) Better error reporting in 'openssl engine'.
7147 [Richard Levitte]
7148
7149 *) Never call load_dh_param(NULL) in s_server.
7150 [Bodo Moeller]
7151
7152 *) Add engine application. It can currently list engines by name and
7153 identity, and test if they are actually available.
7154 [Richard Levitte]
7155
7156 *) Improve RPM specification file by forcing symbolic linking and making
7157 sure the installed documentation is also owned by root.root.
7158 [Damien Miller <djm@mindrot.org>]
7159
7160 *) Give the OpenSSL applications more possibilities to make use of
7161 keys (public as well as private) handled by engines.
7162 [Richard Levitte]
7163
7164 *) Add OCSP code that comes from CertCo.
7165 [Richard Levitte]
7166
7167 *) Add VMS support for the Rijndael code.
7168 [Richard Levitte]
7169
7170 *) Added untested support for Nuron crypto accelerator.
7171 [Ben Laurie]
7172
7173 *) Add support for external cryptographic devices. This code was
7174 previously distributed separately as the "engine" branch.
7175 [Geoff Thorpe, Richard Levitte]
7176
7177 *) Rework the filename-translation in the DSO code. It is now possible to
7178 have far greater control over how a "name" is turned into a filename
7179 depending on the operating environment and any oddities about the
7180 different shared library filenames on each system.
7181 [Geoff Thorpe]
7182
7183 *) Support threads on FreeBSD-elf in Configure.
7184 [Richard Levitte]
7185
7186 *) Fix for SHA1 assembly problem with MASM: it produces
7187 warnings about corrupt line number information when assembling
7188 with debugging information. This is caused by the overlapping
7189 of two sections.
7190 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
7191
7192 *) NCONF changes.
7193 NCONF_get_number() has no error checking at all. As a replacement,
7194 NCONF_get_number_e() is defined (_e for "error checking") and is
7195 promoted strongly. The old NCONF_get_number is kept around for
7196 binary backward compatibility.
7197 Make it possible for methods to load from something other than a BIO,
7198 by providing a function pointer that is given a name instead of a BIO.
7199 For example, this could be used to load configuration data from an
7200 LDAP server.
7201 [Richard Levitte]
7202
7203 *) Fix for non blocking accept BIOs. Added new I/O special reason
7204 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
7205 with non blocking I/O was not possible because no retry code was
7206 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
7207 this case.
7208 [Steve Henson]
7209
7210 *) Added the beginnings of Rijndael support.
7211 [Ben Laurie]
7212
7213 *) Fix for bug in DirectoryString mask setting. Add support for
7214 X509_NAME_print_ex() in 'req' and X509_print_ex() function
7215 to allow certificate printing to more controllable, additional
7216 'certopt' option to 'x509' to allow new printing options to be
7217 set.
7218 [Steve Henson]
7219
7220 *) Clean old EAY MD5 hack from e_os.h.
7221 [Richard Levitte]
7222
7223 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
7224
7225 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
7226 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
7227 [Joe Orton, Steve Henson]
7228
7229 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
7230
7231 *) Fix additional bug revealed by the NISCC test suite:
7232
7233 Stop bug triggering large recursion when presented with
7234 certain ASN.1 tags (CVE-2003-0851)
7235 [Steve Henson]
7236
7237 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
7238
7239 *) Fix various bugs revealed by running the NISCC test suite:
7240
7241 Stop out of bounds reads in the ASN1 code when presented with
7242 invalid tags (CVE-2003-0543 and CVE-2003-0544).
7243
7244 If verify callback ignores invalid public key errors don't try to check
7245 certificate signature with the NULL public key.
7246
7247 [Steve Henson]
7248
7249 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
7250 if the server requested one: as stated in TLS 1.0 and SSL 3.0
7251 specifications.
7252 [Steve Henson]
7253
7254 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
7255 extra data after the compression methods not only for TLS 1.0
7256 but also for SSL 3.0 (as required by the specification).
7257 [Bodo Moeller; problem pointed out by Matthias Loepfe]
7258
7259 *) Change X509_certificate_type() to mark the key as exported/exportable
7260 when it's 512 *bits* long, not 512 bytes.
7261 [Richard Levitte]
7262
7263 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
7264
7265 *) Countermeasure against the Klima-Pokorny-Rosa extension of
7266 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
7267 a protocol version number mismatch like a decryption error
7268 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
7269 [Bodo Moeller]
7270
7271 *) Turn on RSA blinding by default in the default implementation
7272 to avoid a timing attack. Applications that don't want it can call
7273 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
7274 They would be ill-advised to do so in most cases.
7275 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
7276
7277 *) Change RSA blinding code so that it works when the PRNG is not
7278 seeded (in this case, the secret RSA exponent is abused as
7279 an unpredictable seed -- if it is not unpredictable, there
7280 is no point in blinding anyway). Make RSA blinding thread-safe
7281 by remembering the creator's thread ID in rsa->blinding and
7282 having all other threads use local one-time blinding factors
7283 (this requires more computation than sharing rsa->blinding, but
7284 avoids excessive locking; and if an RSA object is not shared
7285 between threads, blinding will still be very fast).
7286 [Bodo Moeller]
7287
7288 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
7289
7290 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
7291 via timing by performing a MAC computation even if incorrrect
7292 block cipher padding has been found. This is a countermeasure
7293 against active attacks where the attacker has to distinguish
7294 between bad padding and a MAC verification error. (CVE-2003-0078)
7295
7296 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
7297 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
7298 Martin Vuagnoux (EPFL, Ilion)]
7299
7300 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
7301
7302 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
7303 memory from it's contents. This is done with a counter that will
7304 place alternating values in each byte. This can be used to solve
7305 two issues: 1) the removal of calls to memset() by highly optimizing
7306 compilers, and 2) cleansing with other values than 0, since those can
7307 be read through on certain media, for example a swap space on disk.
7308 [Geoff Thorpe]
7309
7310 *) Bugfix: client side session caching did not work with external caching,
7311 because the session->cipher setting was not restored when reloading
7312 from the external cache. This problem was masked, when
7313 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
7314 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
7315 [Lutz Jaenicke]
7316
7317 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
7318 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
7319 [Zeev Lieber <zeev-l@yahoo.com>]
7320
7321 *) Undo an undocumented change introduced in 0.9.6e which caused
7322 repeated calls to OpenSSL_add_all_ciphers() and
7323 OpenSSL_add_all_digests() to be ignored, even after calling
7324 EVP_cleanup().
7325 [Richard Levitte]
7326
7327 *) Change the default configuration reader to deal with last line not
7328 being properly terminated.
7329 [Richard Levitte]
7330
7331 *) Change X509_NAME_cmp() so it applies the special rules on handling
7332 DN values that are of type PrintableString, as well as RDNs of type
7333 emailAddress where the value has the type ia5String.
7334 [stefank@valicert.com via Richard Levitte]
7335
7336 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
7337 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
7338 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
7339 the bitwise-OR of the two for use by the majority of applications
7340 wanting this behaviour, and update the docs. The documented
7341 behaviour and actual behaviour were inconsistent and had been
7342 changing anyway, so this is more a bug-fix than a behavioural
7343 change.
7344 [Geoff Thorpe, diagnosed by Nadav Har'El]
7345
7346 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
7347 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
7348 [Bodo Moeller]
7349
7350 *) Fix initialization code race conditions in
7351 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
7352 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
7353 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
7354 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
7355 ssl2_get_cipher_by_char(),
7356 ssl3_get_cipher_by_char().
7357 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
7358
7359 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
7360 the cached sessions are flushed, as the remove_cb() might use ex_data
7361 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
7362 (see [openssl.org #212]).
7363 [Geoff Thorpe, Lutz Jaenicke]
7364
7365 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
7366 length, instead of the encoding length to d2i_ASN1_OBJECT.
7367 [Steve Henson]
7368
7369 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
7370
7371 *) [In 0.9.6g-engine release:]
7372 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
7373 [Lynn Gazis <lgazis@rainbow.com>]
7374
7375 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
7376
7377 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
7378 and get fix the header length calculation.
7379 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
7380 Alon Kantor <alonk@checkpoint.com> (and others),
7381 Steve Henson]
7382
7383 *) Use proper error handling instead of 'assertions' in buffer
7384 overflow checks added in 0.9.6e. This prevents DoS (the
7385 assertions could call abort()).
7386 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
7387
7388 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
7389
7390 *) Add various sanity checks to asn1_get_length() to reject
7391 the ASN1 length bytes if they exceed sizeof(long), will appear
7392 negative or the content length exceeds the length of the
7393 supplied buffer.
7394 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7395
7396 *) Fix cipher selection routines: ciphers without encryption had no flags
7397 for the cipher strength set and where therefore not handled correctly
7398 by the selection routines (PR #130).
7399 [Lutz Jaenicke]
7400
7401 *) Fix EVP_dsa_sha macro.
7402 [Nils Larsch]
7403
7404 *) New option
7405 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
7406 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
7407 that was added in OpenSSL 0.9.6d.
7408
7409 As the countermeasure turned out to be incompatible with some
7410 broken SSL implementations, the new option is part of SSL_OP_ALL.
7411 SSL_OP_ALL is usually employed when compatibility with weird SSL
7412 implementations is desired (e.g. '-bugs' option to 's_client' and
7413 's_server'), so the new option is automatically set in many
7414 applications.
7415 [Bodo Moeller]
7416
7417 *) Changes in security patch:
7418
7419 Changes marked "(CHATS)" were sponsored by the Defense Advanced
7420 Research Projects Agency (DARPA) and Air Force Research Laboratory,
7421 Air Force Materiel Command, USAF, under agreement number
7422 F30602-01-2-0537.
7423
7424 *) Add various sanity checks to asn1_get_length() to reject
7425 the ASN1 length bytes if they exceed sizeof(long), will appear
7426 negative or the content length exceeds the length of the
7427 supplied buffer. (CVE-2002-0659)
7428 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
7429
7430 *) Assertions for various potential buffer overflows, not known to
7431 happen in practice.
7432 [Ben Laurie (CHATS)]
7433
7434 *) Various temporary buffers to hold ASCII versions of integers were
7435 too small for 64 bit platforms. (CVE-2002-0655)
7436 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
7437
7438 *) Remote buffer overflow in SSL3 protocol - an attacker could
7439 supply an oversized session ID to a client. (CVE-2002-0656)
7440 [Ben Laurie (CHATS)]
7441
7442 *) Remote buffer overflow in SSL2 protocol - an attacker could
7443 supply an oversized client master key. (CVE-2002-0656)
7444 [Ben Laurie (CHATS)]
7445
7446 Changes between 0.9.6c and 0.9.6d [9 May 2002]
7447
7448 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
7449 encoded as NULL) with id-dsa-with-sha1.
7450 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
7451
7452 *) Check various X509_...() return values in apps/req.c.
7453 [Nils Larsch <nla@trustcenter.de>]
7454
7455 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
7456 an end-of-file condition would erronously be flagged, when the CRLF
7457 was just at the end of a processed block. The bug was discovered when
7458 processing data through a buffering memory BIO handing the data to a
7459 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
7460 <ptsekov@syntrex.com> and Nedelcho Stanev.
7461 [Lutz Jaenicke]
7462
7463 *) Implement a countermeasure against a vulnerability recently found
7464 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
7465 before application data chunks to avoid the use of known IVs
7466 with data potentially chosen by the attacker.
7467 [Bodo Moeller]
7468
7469 *) Fix length checks in ssl3_get_client_hello().
7470 [Bodo Moeller]
7471
7472 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
7473 to prevent ssl3_read_internal() from incorrectly assuming that
7474 ssl3_read_bytes() found application data while handshake
7475 processing was enabled when in fact s->s3->in_read_app_data was
7476 merely automatically cleared during the initial handshake.
7477 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
7478
7479 *) Fix object definitions for Private and Enterprise: they were not
7480 recognized in their shortname (=lowercase) representation. Extend
7481 obj_dat.pl to issue an error when using undefined keywords instead
7482 of silently ignoring the problem (Svenning Sorensen
7483 <sss@sss.dnsalias.net>).
7484 [Lutz Jaenicke]
7485
7486 *) Fix DH_generate_parameters() so that it works for 'non-standard'
7487 generators, i.e. generators other than 2 and 5. (Previously, the
7488 code did not properly initialise the 'add' and 'rem' values to
7489 BN_generate_prime().)
7490
7491 In the new general case, we do not insist that 'generator' is
7492 actually a primitive root: This requirement is rather pointless;
7493 a generator of the order-q subgroup is just as good, if not
7494 better.
7495 [Bodo Moeller]
7496
7497 *) Map new X509 verification errors to alerts. Discovered and submitted by
7498 Tom Wu <tom@arcot.com>.
7499 [Lutz Jaenicke]
7500
7501 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
7502 returning non-zero before the data has been completely received
7503 when using non-blocking I/O.
7504 [Bodo Moeller; problem pointed out by John Hughes]
7505
7506 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
7507 [Ben Laurie, Lutz Jaenicke]
7508
7509 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
7510 Yoram Zahavi <YoramZ@gilian.com>).
7511 [Lutz Jaenicke]
7512
7513 *) Add information about CygWin 1.3 and on, and preserve proper
7514 configuration for the versions before that.
7515 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
7516
7517 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
7518 check whether we deal with a copy of a session and do not delete from
7519 the cache in this case. Problem reported by "Izhar Shoshani Levi"
7520 <izhar@checkpoint.com>.
7521 [Lutz Jaenicke]
7522
7523 *) Do not store session data into the internal session cache, if it
7524 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
7525 flag is set). Proposed by Aslam <aslam@funk.com>.
7526 [Lutz Jaenicke]
7527
7528 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
7529 value is 0.
7530 [Richard Levitte]
7531
7532 *) [In 0.9.6d-engine release:]
7533 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
7534 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
7535
7536 *) Add the configuration target linux-s390x.
7537 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
7538
7539 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
7540 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
7541 variable as an indication that a ClientHello message has been
7542 received. As the flag value will be lost between multiple
7543 invocations of ssl3_accept when using non-blocking I/O, the
7544 function may not be aware that a handshake has actually taken
7545 place, thus preventing a new session from being added to the
7546 session cache.
7547
7548 To avoid this problem, we now set s->new_session to 2 instead of
7549 using a local variable.
7550 [Lutz Jaenicke, Bodo Moeller]
7551
7552 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
7553 if the SSL_R_LENGTH_MISMATCH error is detected.
7554 [Geoff Thorpe, Bodo Moeller]
7555
7556 *) New 'shared_ldflag' column in Configure platform table.
7557 [Richard Levitte]
7558
7559 *) Fix EVP_CIPHER_mode macro.
7560 ["Dan S. Camper" <dan@bti.net>]
7561
7562 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
7563 type, we must throw them away by setting rr->length to 0.
7564 [D P Chang <dpc@qualys.com>]
7565
7566 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
7567
7568 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
7569 <Dominikus.Scherkl@biodata.com>. (The previous implementation
7570 worked incorrectly for those cases where range = 10..._2 and
7571 3*range is two bits longer than range.)
7572 [Bodo Moeller]
7573
7574 *) Only add signing time to PKCS7 structures if it is not already
7575 present.
7576 [Steve Henson]
7577
7578 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
7579 OBJ_ld_ce should be OBJ_id_ce.
7580 Also some ip-pda OIDs in crypto/objects/objects.txt were
7581 incorrect (cf. RFC 3039).
7582 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
7583
7584 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
7585 returns early because it has nothing to do.
7586 [Andy Schneider <andy.schneider@bjss.co.uk>]
7587
7588 *) [In 0.9.6c-engine release:]
7589 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
7590 [Andy Schneider <andy.schneider@bjss.co.uk>]
7591
7592 *) [In 0.9.6c-engine release:]
7593 Add support for Cryptographic Appliance's keyserver technology.
7594 (Use engine 'keyclient')
7595 [Cryptographic Appliances and Geoff Thorpe]
7596
7597 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
7598 is called via tools/c89.sh because arguments have to be
7599 rearranged (all '-L' options must appear before the first object
7600 modules).
7601 [Richard Shapiro <rshapiro@abinitio.com>]
7602
7603 *) [In 0.9.6c-engine release:]
7604 Add support for Broadcom crypto accelerator cards, backported
7605 from 0.9.7.
7606 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
7607
7608 *) [In 0.9.6c-engine release:]
7609 Add support for SureWare crypto accelerator cards from
7610 Baltimore Technologies. (Use engine 'sureware')
7611 [Baltimore Technologies and Mark Cox]
7612
7613 *) [In 0.9.6c-engine release:]
7614 Add support for crypto accelerator cards from Accelerated
7615 Encryption Processing, www.aep.ie. (Use engine 'aep')
7616 [AEP Inc. and Mark Cox]
7617
7618 *) Add a configuration entry for gcc on UnixWare.
7619 [Gary Benson <gbenson@redhat.com>]
7620
7621 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
7622 messages are stored in a single piece (fixed-length part and
7623 variable-length part combined) and fix various bugs found on the way.
7624 [Bodo Moeller]
7625
7626 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
7627 instead. BIO_gethostbyname() does not know what timeouts are
7628 appropriate, so entries would stay in cache even when they have
7629 become invalid.
7630 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
7631
7632 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
7633 faced with a pathologically small ClientHello fragment that does
7634 not contain client_version: Instead of aborting with an error,
7635 simply choose the highest available protocol version (i.e.,
7636 TLS 1.0 unless it is disabled). In practice, ClientHello
7637 messages are never sent like this, but this change gives us
7638 strictly correct behaviour at least for TLS.
7639 [Bodo Moeller]
7640
7641 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
7642 never resets s->method to s->ctx->method when called from within
7643 one of the SSL handshake functions.
7644 [Bodo Moeller; problem pointed out by Niko Baric]
7645
7646 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
7647 (sent using the client's version number) if client_version is
7648 smaller than the protocol version in use. Also change
7649 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
7650 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
7651 the client will at least see that alert.
7652 [Bodo Moeller]
7653
7654 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
7655 correctly.
7656 [Bodo Moeller]
7657
7658 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
7659 client receives HelloRequest while in a handshake.
7660 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
7661
7662 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
7663 should end in 'break', not 'goto end' which circuments various
7664 cleanups done in state SSL_ST_OK. But session related stuff
7665 must be disabled for SSL_ST_OK in the case that we just sent a
7666 HelloRequest.
7667
7668 Also avoid some overhead by not calling ssl_init_wbio_buffer()
7669 before just sending a HelloRequest.
7670 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
7671
7672 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
7673 reveal whether illegal block cipher padding was found or a MAC
7674 verification error occured. (Neither SSLerr() codes nor alerts
7675 are directly visible to potential attackers, but the information
7676 may leak via logfiles.)
7677
7678 Similar changes are not required for the SSL 2.0 implementation
7679 because the number of padding bytes is sent in clear for SSL 2.0,
7680 and the extra bytes are just ignored. However ssl/s2_pkt.c
7681 failed to verify that the purported number of padding bytes is in
7682 the legal range.
7683 [Bodo Moeller]
7684
7685 *) Add OpenUNIX-8 support including shared libraries
7686 (Boyd Lynn Gerber <gerberb@zenez.com>).
7687 [Lutz Jaenicke]
7688
7689 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
7690 'wristwatch attack' using huge encoding parameters (cf.
7691 James H. Manger's CRYPTO 2001 paper). Note that the
7692 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
7693 encoding parameters and hence was not vulnerable.
7694 [Bodo Moeller]
7695
7696 *) BN_sqr() bug fix.
7697 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
7698
7699 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
7700 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
7701 followed by modular reduction.
7702 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
7703
7704 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
7705 equivalent based on BN_pseudo_rand() instead of BN_rand().
7706 [Bodo Moeller]
7707
7708 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
7709 This function was broken, as the check for a new client hello message
7710 to handle SGC did not allow these large messages.
7711 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
7712 [Lutz Jaenicke]
7713
7714 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
7715 [Lutz Jaenicke]
7716
7717 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
7718 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
7719 [Lutz Jaenicke]
7720
7721 *) Rework the configuration and shared library support for Tru64 Unix.
7722 The configuration part makes use of modern compiler features and
7723 still retains old compiler behavior for those that run older versions
7724 of the OS. The shared library support part includes a variant that
7725 uses the RPATH feature, and is available through the special
7726 configuration target "alpha-cc-rpath", which will never be selected
7727 automatically.
7728 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
7729
7730 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
7731 with the same message size as in ssl3_get_certificate_request().
7732 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
7733 messages might inadvertently be reject as too long.
7734 [Petr Lampa <lampa@fee.vutbr.cz>]
7735
7736 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
7737 [Andy Polyakov]
7738
7739 *) Modified SSL library such that the verify_callback that has been set
7740 specificly for an SSL object with SSL_set_verify() is actually being
7741 used. Before the change, a verify_callback set with this function was
7742 ignored and the verify_callback() set in the SSL_CTX at the time of
7743 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
7744 to allow the necessary settings.
7745 [Lutz Jaenicke]
7746
7747 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
7748 explicitly to NULL, as at least on Solaris 8 this seems not always to be
7749 done automatically (in contradiction to the requirements of the C
7750 standard). This made problems when used from OpenSSH.
7751 [Lutz Jaenicke]
7752
7753 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
7754 dh->length and always used
7755
7756 BN_rand_range(priv_key, dh->p).
7757
7758 BN_rand_range() is not necessary for Diffie-Hellman, and this
7759 specific range makes Diffie-Hellman unnecessarily inefficient if
7760 dh->length (recommended exponent length) is much smaller than the
7761 length of dh->p. We could use BN_rand_range() if the order of
7762 the subgroup was stored in the DH structure, but we only have
7763 dh->length.
7764
7765 So switch back to
7766
7767 BN_rand(priv_key, l, ...)
7768
7769 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
7770 otherwise.
7771 [Bodo Moeller]
7772
7773 *) In
7774
7775 RSA_eay_public_encrypt
7776 RSA_eay_private_decrypt
7777 RSA_eay_private_encrypt (signing)
7778 RSA_eay_public_decrypt (signature verification)
7779
7780 (default implementations for RSA_public_encrypt,
7781 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
7782 always reject numbers >= n.
7783 [Bodo Moeller]
7784
7785 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
7786 to synchronize access to 'locking_thread'. This is necessary on
7787 systems where access to 'locking_thread' (an 'unsigned long'
7788 variable) is not atomic.
7789 [Bodo Moeller]
7790
7791 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
7792 *before* setting the 'crypto_lock_rand' flag. The previous code had
7793 a race condition if 0 is a valid thread ID.
7794 [Travis Vitek <vitek@roguewave.com>]
7795
7796 *) Add support for shared libraries under Irix.
7797 [Albert Chin-A-Young <china@thewrittenword.com>]
7798
7799 *) Add configuration option to build on Linux on both big-endian and
7800 little-endian MIPS.
7801 [Ralf Baechle <ralf@uni-koblenz.de>]
7802
7803 *) Add the possibility to create shared libraries on HP-UX.
7804 [Richard Levitte]
7805
7806 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
7807
7808 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
7809 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
7810 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
7811 PRNG state recovery was possible based on the output of
7812 one PRNG request appropriately sized to gain knowledge on
7813 'md' followed by enough consecutive 1-byte PRNG requests
7814 to traverse all of 'state'.
7815
7816 1. When updating 'md_local' (the current thread's copy of 'md')
7817 during PRNG output generation, hash all of the previous
7818 'md_local' value, not just the half used for PRNG output.
7819
7820 2. Make the number of bytes from 'state' included into the hash
7821 independent from the number of PRNG bytes requested.
7822
7823 The first measure alone would be sufficient to avoid
7824 Markku-Juhani's attack. (Actually it had never occurred
7825 to me that the half of 'md_local' used for chaining was the
7826 half from which PRNG output bytes were taken -- I had always
7827 assumed that the secret half would be used.) The second
7828 measure makes sure that additional data from 'state' is never
7829 mixed into 'md_local' in small portions; this heuristically
7830 further strengthens the PRNG.
7831 [Bodo Moeller]
7832
7833 *) Fix crypto/bn/asm/mips3.s.
7834 [Andy Polyakov]
7835
7836 *) When only the key is given to "enc", the IV is undefined. Print out
7837 an error message in this case.
7838 [Lutz Jaenicke]
7839
7840 *) Handle special case when X509_NAME is empty in X509 printing routines.
7841 [Steve Henson]
7842
7843 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
7844 positive and less than q.
7845 [Bodo Moeller]
7846
7847 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
7848 used: it isn't thread safe and the add_lock_callback should handle
7849 that itself.
7850 [Paul Rose <Paul.Rose@bridge.com>]
7851
7852 *) Verify that incoming data obeys the block size in
7853 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
7854 [Bodo Moeller]
7855
7856 *) Fix OAEP check.
7857 [Ulf Möller, Bodo Möller]
7858
7859 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
7860 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
7861 when fixing the server behaviour for backwards-compatible 'client
7862 hello' messages. (Note that the attack is impractical against
7863 SSL 3.0 and TLS 1.0 anyway because length and version checking
7864 means that the probability of guessing a valid ciphertext is
7865 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
7866 paper.)
7867
7868 Before 0.9.5, the countermeasure (hide the error by generating a
7869 random 'decryption result') did not work properly because
7870 ERR_clear_error() was missing, meaning that SSL_get_error() would
7871 detect the supposedly ignored error.
7872
7873 Both problems are now fixed.
7874 [Bodo Moeller]
7875
7876 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
7877 (previously it was 1024).
7878 [Bodo Moeller]
7879
7880 *) Fix for compatibility mode trust settings: ignore trust settings
7881 unless some valid trust or reject settings are present.
7882 [Steve Henson]
7883
7884 *) Fix for blowfish EVP: its a variable length cipher.
7885 [Steve Henson]
7886
7887 *) Fix various bugs related to DSA S/MIME verification. Handle missing
7888 parameters in DSA public key structures and return an error in the
7889 DSA routines if parameters are absent.
7890 [Steve Henson]
7891
7892 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
7893 in the current directory if neither $RANDFILE nor $HOME was set.
7894 RAND_file_name() in 0.9.6a returned NULL in this case. This has
7895 caused some confusion to Windows users who haven't defined $HOME.
7896 Thus RAND_file_name() is changed again: e_os.h can define a
7897 DEFAULT_HOME, which will be used if $HOME is not set.
7898 For Windows, we use "C:"; on other platforms, we still require
7899 environment variables.
7900
7901 *) Move 'if (!initialized) RAND_poll()' into regions protected by
7902 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
7903 having multiple threads call RAND_poll() concurrently.
7904 [Bodo Moeller]
7905
7906 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
7907 combination of a flag and a thread ID variable.
7908 Otherwise while one thread is in ssleay_rand_bytes (which sets the
7909 flag), *other* threads can enter ssleay_add_bytes without obeying
7910 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
7911 that they do not hold after the first thread unsets add_do_not_lock).
7912 [Bodo Moeller]
7913
7914 *) Change bctest again: '-x' expressions are not available in all
7915 versions of 'test'.
7916 [Bodo Moeller]
7917
7918 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
7919
7920 *) Fix a couple of memory leaks in PKCS7_dataDecode()
7921 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
7922
7923 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
7924 the default extension for executables, if any. Also, make the perl
7925 scripts that use symlink() to test if it really exists and use "cp"
7926 if it doesn't. All this made OpenSSL compilable and installable in
7927 CygWin.
7928 [Richard Levitte]
7929
7930 *) Fix for asn1_GetSequence() for indefinite length constructed data.
7931 If SEQUENCE is length is indefinite just set c->slen to the total
7932 amount of data available.
7933 [Steve Henson, reported by shige@FreeBSD.org]
7934 [This change does not apply to 0.9.7.]
7935
7936 *) Change bctest to avoid here-documents inside command substitution
7937 (workaround for FreeBSD /bin/sh bug).
7938 For compatibility with Ultrix, avoid shell functions (introduced
7939 in the bctest version that searches along $PATH).
7940 [Bodo Moeller]
7941
7942 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
7943 with des_encrypt() defined on some operating systems, like Solaris
7944 and UnixWare.
7945 [Richard Levitte]
7946
7947 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
7948 On the Importance of Eliminating Errors in Cryptographic
7949 Computations, J. Cryptology 14 (2001) 2, 101-119,
7950 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
7951 [Ulf Moeller]
7952
7953 *) MIPS assembler BIGNUM division bug fix.
7954 [Andy Polyakov]
7955
7956 *) Disabled incorrect Alpha assembler code.
7957 [Richard Levitte]
7958
7959 *) Fix PKCS#7 decode routines so they correctly update the length
7960 after reading an EOC for the EXPLICIT tag.
7961 [Steve Henson]
7962 [This change does not apply to 0.9.7.]
7963
7964 *) Fix bug in PKCS#12 key generation routines. This was triggered
7965 if a 3DES key was generated with a 0 initial byte. Include
7966 PKCS12_BROKEN_KEYGEN compilation option to retain the old
7967 (but broken) behaviour.
7968 [Steve Henson]
7969
7970 *) Enhance bctest to search for a working bc along $PATH and print
7971 it when found.
7972 [Tim Rice <tim@multitalents.net> via Richard Levitte]
7973
7974 *) Fix memory leaks in err.c: free err_data string if necessary;
7975 don't write to the wrong index in ERR_set_error_data.
7976 [Bodo Moeller]
7977
7978 *) Implement ssl23_peek (analogous to ssl23_read), which previously
7979 did not exist.
7980 [Bodo Moeller]
7981
7982 *) Replace rdtsc with _emit statements for VC++ version 5.
7983 [Jeremy Cooper <jeremy@baymoo.org>]
7984
7985 *) Make it possible to reuse SSLv2 sessions.
7986 [Richard Levitte]
7987
7988 *) In copy_email() check for >= 0 as a return value for
7989 X509_NAME_get_index_by_NID() since 0 is a valid index.
7990 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
7991
7992 *) Avoid coredump with unsupported or invalid public keys by checking if
7993 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
7994 PKCS7_verify() fails with non detached data.
7995 [Steve Henson]
7996
7997 *) Don't use getenv in library functions when run as setuid/setgid.
7998 New function OPENSSL_issetugid().
7999 [Ulf Moeller]
8000
8001 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8002 due to incorrect handling of multi-threading:
8003
8004 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8005
8006 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8007
8008 3. Count how many times MemCheck_off() has been called so that
8009 nested use can be treated correctly. This also avoids
8010 inband-signalling in the previous code (which relied on the
8011 assumption that thread ID 0 is impossible).
8012 [Bodo Moeller]
8013
8014 *) Add "-rand" option also to s_client and s_server.
8015 [Lutz Jaenicke]
8016
8017 *) Fix CPU detection on Irix 6.x.
8018 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8019 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8020
8021 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8022 was empty.
8023 [Steve Henson]
8024 [This change does not apply to 0.9.7.]
8025
8026 *) Use the cached encoding of an X509_NAME structure rather than
8027 copying it. This is apparently the reason for the libsafe "errors"
8028 but the code is actually correct.
8029 [Steve Henson]
8030
8031 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8032 Bleichenbacher's DSA attack.
8033 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8034 to be set and top=0 forces the highest bit to be set; top=-1 is new
8035 and leaves the highest bit random.
8036 [Ulf Moeller, Bodo Moeller]
8037
8038 *) In the NCONF_...-based implementations for CONF_... queries
8039 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8040 a temporary CONF structure with the data component set to NULL
8041 (which gives segmentation faults in lh_retrieve).
8042 Instead, use NULL for the CONF pointer in CONF_get_string and
8043 CONF_get_number (which may use environment variables) and directly
8044 return NULL from CONF_get_section.
8045 [Bodo Moeller]
8046
8047 *) Fix potential buffer overrun for EBCDIC.
8048 [Ulf Moeller]
8049
8050 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8051 keyUsage if basicConstraints absent for a CA.
8052 [Steve Henson]
8053
8054 *) Make SMIME_write_PKCS7() write mail header values with a format that
8055 is more generally accepted (no spaces before the semicolon), since
8056 some programs can't parse those values properly otherwise. Also make
8057 sure BIO's that break lines after each write do not create invalid
8058 headers.
8059 [Richard Levitte]
8060
8061 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8062 macros previously used would not encode an empty SEQUENCE OF
8063 and break the signature.
8064 [Steve Henson]
8065 [This change does not apply to 0.9.7.]
8066
8067 *) Zero the premaster secret after deriving the master secret in
8068 DH ciphersuites.
8069 [Steve Henson]
8070
8071 *) Add some EVP_add_digest_alias registrations (as found in
8072 OpenSSL_add_all_digests()) to SSL_library_init()
8073 aka OpenSSL_add_ssl_algorithms(). This provides improved
8074 compatibility with peers using X.509 certificates
8075 with unconventional AlgorithmIdentifier OIDs.
8076 [Bodo Moeller]
8077
8078 *) Fix for Irix with NO_ASM.
8079 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8080
8081 *) ./config script fixes.
8082 [Ulf Moeller, Richard Levitte]
8083
8084 *) Fix 'openssl passwd -1'.
8085 [Bodo Moeller]
8086
8087 *) Change PKCS12_key_gen_asc() so it can cope with non null
8088 terminated strings whose length is passed in the passlen
8089 parameter, for example from PEM callbacks. This was done
8090 by adding an extra length parameter to asc2uni().
8091 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8092
8093 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8094 call failed, free the DSA structure.
8095 [Bodo Moeller]
8096
8097 *) Fix to uni2asc() to cope with zero length Unicode strings.
8098 These are present in some PKCS#12 files.
8099 [Steve Henson]
8100
8101 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8102 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8103 when writing a 32767 byte record.
8104 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8105
8106 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8107 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8108
8109 (RSA objects have a reference count access to which is protected
8110 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8111 so they are meant to be shared between threads.)
8112 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8113 "Reddie, Steven" <Steven.Reddie@ca.com>]
8114
8115 *) Fix a deadlock in CRYPTO_mem_leaks().
8116 [Bodo Moeller]
8117
8118 *) Use better test patterns in bntest.
8119 [Ulf Möller]
8120
8121 *) rand_win.c fix for Borland C.
8122 [Ulf Möller]
8123
8124 *) BN_rshift bugfix for n == 0.
8125 [Bodo Moeller]
8126
8127 *) Add a 'bctest' script that checks for some known 'bc' bugs
8128 so that 'make test' does not abort just because 'bc' is broken.
8129 [Bodo Moeller]
8130
8131 *) Store verify_result within SSL_SESSION also for client side to
8132 avoid potential security hole. (Re-used sessions on the client side
8133 always resulted in verify_result==X509_V_OK, not using the original
8134 result of the server certificate verification.)
8135 [Lutz Jaenicke]
8136
8137 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
8138 SSL3_RT_APPLICATION_DATA, return 0.
8139 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
8140 [Bodo Moeller]
8141
8142 *) Fix SSL_peek:
8143 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
8144 releases, have been re-implemented by renaming the previous
8145 implementations of ssl2_read and ssl3_read to ssl2_read_internal
8146 and ssl3_read_internal, respectively, and adding 'peek' parameters
8147 to them. The new ssl[23]_{read,peek} functions are calls to
8148 ssl[23]_read_internal with the 'peek' flag set appropriately.
8149 A 'peek' parameter has also been added to ssl3_read_bytes, which
8150 does the actual work for ssl3_read_internal.
8151 [Bodo Moeller]
8152
8153 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
8154 the method-specific "init()" handler. Also clean up ex_data after
8155 calling the method-specific "finish()" handler. Previously, this was
8156 happening the other way round.
8157 [Geoff Thorpe]
8158
8159 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
8160 The previous value, 12, was not always sufficient for BN_mod_exp().
8161 [Bodo Moeller]
8162
8163 *) Make sure that shared libraries get the internal name engine with
8164 the full version number and not just 0. This should mark the
8165 shared libraries as not backward compatible. Of course, this should
8166 be changed again when we can guarantee backward binary compatibility.
8167 [Richard Levitte]
8168
8169 *) Fix typo in get_cert_by_subject() in by_dir.c
8170 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
8171
8172 *) Rework the system to generate shared libraries:
8173
8174 - Make note of the expected extension for the shared libraries and
8175 if there is a need for symbolic links from for example libcrypto.so.0
8176 to libcrypto.so.0.9.7. There is extended info in Configure for
8177 that.
8178
8179 - Make as few rebuilds of the shared libraries as possible.
8180
8181 - Still avoid linking the OpenSSL programs with the shared libraries.
8182
8183 - When installing, install the shared libraries separately from the
8184 static ones.
8185 [Richard Levitte]
8186
8187 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
8188
8189 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
8190 and not in SSL_clear because the latter is also used by the
8191 accept/connect functions; previously, the settings made by
8192 SSL_set_read_ahead would be lost during the handshake.
8193 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
8194
8195 *) Correct util/mkdef.pl to be selective about disabled algorithms.
8196 Previously, it would create entries for disableed algorithms no
8197 matter what.
8198 [Richard Levitte]
8199
8200 *) Added several new manual pages for SSL_* function.
8201 [Lutz Jaenicke]
8202
8203 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
8204
8205 *) In ssl23_get_client_hello, generate an error message when faced
8206 with an initial SSL 3.0/TLS record that is too small to contain the
8207 first two bytes of the ClientHello message, i.e. client_version.
8208 (Note that this is a pathologic case that probably has never happened
8209 in real life.) The previous approach was to use the version number
8210 from the record header as a substitute; but our protocol choice
8211 should not depend on that one because it is not authenticated
8212 by the Finished messages.
8213 [Bodo Moeller]
8214
8215 *) More robust randomness gathering functions for Windows.
8216 [Jeffrey Altman <jaltman@columbia.edu>]
8217
8218 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
8219 not set then we don't setup the error code for issuer check errors
8220 to avoid possibly overwriting other errors which the callback does
8221 handle. If an application does set the flag then we assume it knows
8222 what it is doing and can handle the new informational codes
8223 appropriately.
8224 [Steve Henson]
8225
8226 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
8227 a general "ANY" type, as such it should be able to decode anything
8228 including tagged types. However it didn't check the class so it would
8229 wrongly interpret tagged types in the same way as their universal
8230 counterpart and unknown types were just rejected. Changed so that the
8231 tagged and unknown types are handled in the same way as a SEQUENCE:
8232 that is the encoding is stored intact. There is also a new type
8233 "V_ASN1_OTHER" which is used when the class is not universal, in this
8234 case we have no idea what the actual type is so we just lump them all
8235 together.
8236 [Steve Henson]
8237
8238 *) On VMS, stdout may very well lead to a file that is written to
8239 in a record-oriented fashion. That means that every write() will
8240 write a separate record, which will be read separately by the
8241 programs trying to read from it. This can be very confusing.
8242
8243 The solution is to put a BIO filter in the way that will buffer
8244 text until a linefeed is reached, and then write everything a
8245 line at a time, so every record written will be an actual line,
8246 not chunks of lines and not (usually doesn't happen, but I've
8247 seen it once) several lines in one record. BIO_f_linebuffer() is
8248 the answer.
8249
8250 Currently, it's a VMS-only method, because that's where it has
8251 been tested well enough.
8252 [Richard Levitte]
8253
8254 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
8255 it can return incorrect results.
8256 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
8257 but it was in 0.9.6-beta[12].)
8258 [Bodo Moeller]
8259
8260 *) Disable the check for content being present when verifying detached
8261 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
8262 include zero length content when signing messages.
8263 [Steve Henson]
8264
8265 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
8266 BIO_ctrl (for BIO pairs).
8267 [Bodo Möller]
8268
8269 *) Add DSO method for VMS.
8270 [Richard Levitte]
8271
8272 *) Bug fix: Montgomery multiplication could produce results with the
8273 wrong sign.
8274 [Ulf Möller]
8275
8276 *) Add RPM specification openssl.spec and modify it to build three
8277 packages. The default package contains applications, application
8278 documentation and run-time libraries. The devel package contains
8279 include files, static libraries and function documentation. The
8280 doc package contains the contents of the doc directory. The original
8281 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
8282 [Richard Levitte]
8283
8284 *) Add a large number of documentation files for many SSL routines.
8285 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
8286
8287 *) Add a configuration entry for Sony News 4.
8288 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
8289
8290 *) Don't set the two most significant bits to one when generating a
8291 random number < q in the DSA library.
8292 [Ulf Möller]
8293
8294 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
8295 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
8296 the underlying transport is blocking) if a handshake took place.
8297 (The default behaviour is needed by applications such as s_client
8298 and s_server that use select() to determine when to use SSL_read;
8299 but for applications that know in advance when to expect data, it
8300 just makes things more complicated.)
8301 [Bodo Moeller]
8302
8303 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
8304 from EGD.
8305 [Ben Laurie]
8306
8307 *) Add a few more EBCDIC conditionals that make `req' and `x509'
8308 work better on such systems.
8309 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8310
8311 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
8312 Update PKCS12_parse() so it copies the friendlyName and the
8313 keyid to the certificates aux info.
8314 [Steve Henson]
8315
8316 *) Fix bug in PKCS7_verify() which caused an infinite loop
8317 if there was more than one signature.
8318 [Sven Uszpelkat <su@celocom.de>]
8319
8320 *) Major change in util/mkdef.pl to include extra information
8321 about each symbol, as well as presentig variables as well
8322 as functions. This change means that there's n more need
8323 to rebuild the .num files when some algorithms are excluded.
8324 [Richard Levitte]
8325
8326 *) Allow the verify time to be set by an application,
8327 rather than always using the current time.
8328 [Steve Henson]
8329
8330 *) Phase 2 verify code reorganisation. The certificate
8331 verify code now looks up an issuer certificate by a
8332 number of criteria: subject name, authority key id
8333 and key usage. It also verifies self signed certificates
8334 by the same criteria. The main comparison function is
8335 X509_check_issued() which performs these checks.
8336
8337 Lot of changes were necessary in order to support this
8338 without completely rewriting the lookup code.
8339
8340 Authority and subject key identifier are now cached.
8341
8342 The LHASH 'certs' is X509_STORE has now been replaced
8343 by a STACK_OF(X509_OBJECT). This is mainly because an
8344 LHASH can't store or retrieve multiple objects with
8345 the same hash value.
8346
8347 As a result various functions (which were all internal
8348 use only) have changed to handle the new X509_STORE
8349 structure. This will break anything that messed round
8350 with X509_STORE internally.
8351
8352 The functions X509_STORE_add_cert() now checks for an
8353 exact match, rather than just subject name.
8354
8355 The X509_STORE API doesn't directly support the retrieval
8356 of multiple certificates matching a given criteria, however
8357 this can be worked round by performing a lookup first
8358 (which will fill the cache with candidate certificates)
8359 and then examining the cache for matches. This is probably
8360 the best we can do without throwing out X509_LOOKUP
8361 entirely (maybe later...).
8362
8363 The X509_VERIFY_CTX structure has been enhanced considerably.
8364
8365 All certificate lookup operations now go via a get_issuer()
8366 callback. Although this currently uses an X509_STORE it
8367 can be replaced by custom lookups. This is a simple way
8368 to bypass the X509_STORE hackery necessary to make this
8369 work and makes it possible to use more efficient techniques
8370 in future. A very simple version which uses a simple
8371 STACK for its trusted certificate store is also provided
8372 using X509_STORE_CTX_trusted_stack().
8373
8374 The verify_cb() and verify() callbacks now have equivalents
8375 in the X509_STORE_CTX structure.
8376
8377 X509_STORE_CTX also has a 'flags' field which can be used
8378 to customise the verify behaviour.
8379 [Steve Henson]
8380
8381 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
8382 excludes S/MIME capabilities.
8383 [Steve Henson]
8384
8385 *) When a certificate request is read in keep a copy of the
8386 original encoding of the signed data and use it when outputing
8387 again. Signatures then use the original encoding rather than
8388 a decoded, encoded version which may cause problems if the
8389 request is improperly encoded.
8390 [Steve Henson]
8391
8392 *) For consistency with other BIO_puts implementations, call
8393 buffer_write(b, ...) directly in buffer_puts instead of calling
8394 BIO_write(b, ...).
8395
8396 In BIO_puts, increment b->num_write as in BIO_write.
8397 [Peter.Sylvester@EdelWeb.fr]
8398
8399 *) Fix BN_mul_word for the case where the word is 0. (We have to use
8400 BN_zero, we may not return a BIGNUM with an array consisting of
8401 words set to zero.)
8402 [Bodo Moeller]
8403
8404 *) Avoid calling abort() from within the library when problems are
8405 detected, except if preprocessor symbols have been defined
8406 (such as REF_CHECK, BN_DEBUG etc.).
8407 [Bodo Moeller]
8408
8409 *) New openssl application 'rsautl'. This utility can be
8410 used for low level RSA operations. DER public key
8411 BIO/fp routines also added.
8412 [Steve Henson]
8413
8414 *) New Configure entry and patches for compiling on QNX 4.
8415 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
8416
8417 *) A demo state-machine implementation was sponsored by
8418 Nuron (http://www.nuron.com/) and is now available in
8419 demos/state_machine.
8420 [Ben Laurie]
8421
8422 *) New options added to the 'dgst' utility for signature
8423 generation and verification.
8424 [Steve Henson]
8425
8426 *) Unrecognized PKCS#7 content types are now handled via a
8427 catch all ASN1_TYPE structure. This allows unsupported
8428 types to be stored as a "blob" and an application can
8429 encode and decode it manually.
8430 [Steve Henson]
8431
8432 *) Fix various signed/unsigned issues to make a_strex.c
8433 compile under VC++.
8434 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
8435
8436 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
8437 length if passed a buffer. ASN1_INTEGER_to_BN failed
8438 if passed a NULL BN and its argument was negative.
8439 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
8440
8441 *) Modification to PKCS#7 encoding routines to output definite
8442 length encoding. Since currently the whole structures are in
8443 memory there's not real point in using indefinite length
8444 constructed encoding. However if OpenSSL is compiled with
8445 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
8446 [Steve Henson]
8447
8448 *) Added BIO_vprintf() and BIO_vsnprintf().
8449 [Richard Levitte]
8450
8451 *) Added more prefixes to parse for in the the strings written
8452 through a logging bio, to cover all the levels that are available
8453 through syslog. The prefixes are now:
8454
8455 PANIC, EMERG, EMR => LOG_EMERG
8456 ALERT, ALR => LOG_ALERT
8457 CRIT, CRI => LOG_CRIT
8458 ERROR, ERR => LOG_ERR
8459 WARNING, WARN, WAR => LOG_WARNING
8460 NOTICE, NOTE, NOT => LOG_NOTICE
8461 INFO, INF => LOG_INFO
8462 DEBUG, DBG => LOG_DEBUG
8463
8464 and as before, if none of those prefixes are present at the
8465 beginning of the string, LOG_ERR is chosen.
8466
8467 On Win32, the LOG_* levels are mapped according to this:
8468
8469 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
8470 LOG_WARNING => EVENTLOG_WARNING_TYPE
8471 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
8472
8473 [Richard Levitte]
8474
8475 *) Made it possible to reconfigure with just the configuration
8476 argument "reconf" or "reconfigure". The command line arguments
8477 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
8478 and are retrieved from there when reconfiguring.
8479 [Richard Levitte]
8480
8481 *) MD4 implemented.
8482 [Assar Westerlund <assar@sics.se>, Richard Levitte]
8483
8484 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
8485 [Richard Levitte]
8486
8487 *) The obj_dat.pl script was messing up the sorting of object
8488 names. The reason was that it compared the quoted version
8489 of strings as a result "OCSP" > "OCSP Signing" because
8490 " > SPACE. Changed script to store unquoted versions of
8491 names and add quotes on output. It was also omitting some
8492 names from the lookup table if they were given a default
8493 value (that is if SN is missing it is given the same
8494 value as LN and vice versa), these are now added on the
8495 grounds that if an object has a name we should be able to
8496 look it up. Finally added warning output when duplicate
8497 short or long names are found.
8498 [Steve Henson]
8499
8500 *) Changes needed for Tandem NSK.
8501 [Scott Uroff <scott@xypro.com>]
8502
8503 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
8504 RSA_padding_check_SSLv23(), special padding was never detected
8505 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
8506 version rollback attacks was not effective.
8507
8508 In s23_clnt.c, don't use special rollback-attack detection padding
8509 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
8510 client; similarly, in s23_srvr.c, don't do the rollback check if
8511 SSL 2.0 is the only protocol enabled in the server.
8512 [Bodo Moeller]
8513
8514 *) Make it possible to get hexdumps of unprintable data with 'openssl
8515 asn1parse'. By implication, the functions ASN1_parse_dump() and
8516 BIO_dump_indent() are added.
8517 [Richard Levitte]
8518
8519 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
8520 these print out strings and name structures based on various
8521 flags including RFC2253 support and proper handling of
8522 multibyte characters. Added options to the 'x509' utility
8523 to allow the various flags to be set.
8524 [Steve Henson]
8525
8526 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
8527 Also change the functions X509_cmp_current_time() and
8528 X509_gmtime_adj() work with an ASN1_TIME structure,
8529 this will enable certificates using GeneralizedTime in validity
8530 dates to be checked.
8531 [Steve Henson]
8532
8533 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
8534 negative public key encodings) on by default,
8535 NO_NEG_PUBKEY_BUG can be set to disable it.
8536 [Steve Henson]
8537
8538 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
8539 content octets. An i2c_ASN1_OBJECT is unnecessary because
8540 the encoding can be trivially obtained from the structure.
8541 [Steve Henson]
8542
8543 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
8544 not read locks (CRYPTO_r_[un]lock).
8545 [Bodo Moeller]
8546
8547 *) A first attempt at creating official support for shared
8548 libraries through configuration. I've kept it so the
8549 default is static libraries only, and the OpenSSL programs
8550 are always statically linked for now, but there are
8551 preparations for dynamic linking in place.
8552 This has been tested on Linux and Tru64.
8553 [Richard Levitte]
8554
8555 *) Randomness polling function for Win9x, as described in:
8556 Peter Gutmann, Software Generation of Practically Strong
8557 Random Numbers.
8558 [Ulf Möller]
8559
8560 *) Fix so PRNG is seeded in req if using an already existing
8561 DSA key.
8562 [Steve Henson]
8563
8564 *) New options to smime application. -inform and -outform
8565 allow alternative formats for the S/MIME message including
8566 PEM and DER. The -content option allows the content to be
8567 specified separately. This should allow things like Netscape
8568 form signing output easier to verify.
8569 [Steve Henson]
8570
8571 *) Fix the ASN1 encoding of tags using the 'long form'.
8572 [Steve Henson]
8573
8574 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
8575 STRING types. These convert content octets to and from the
8576 underlying type. The actual tag and length octets are
8577 already assumed to have been read in and checked. These
8578 are needed because all other string types have virtually
8579 identical handling apart from the tag. By having versions
8580 of the ASN1 functions that just operate on content octets
8581 IMPLICIT tagging can be handled properly. It also allows
8582 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
8583 and ASN1_INTEGER are identical apart from the tag.
8584 [Steve Henson]
8585
8586 *) Change the handling of OID objects as follows:
8587
8588 - New object identifiers are inserted in objects.txt, following
8589 the syntax given in objects.README.
8590 - objects.pl is used to process obj_mac.num and create a new
8591 obj_mac.h.
8592 - obj_dat.pl is used to create a new obj_dat.h, using the data in
8593 obj_mac.h.
8594
8595 This is currently kind of a hack, and the perl code in objects.pl
8596 isn't very elegant, but it works as I intended. The simplest way
8597 to check that it worked correctly is to look in obj_dat.h and
8598 check the array nid_objs and make sure the objects haven't moved
8599 around (this is important!). Additions are OK, as well as
8600 consistent name changes.
8601 [Richard Levitte]
8602
8603 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
8604 [Bodo Moeller]
8605
8606 *) Addition of the command line parameter '-rand file' to 'openssl req'.
8607 The given file adds to whatever has already been seeded into the
8608 random pool through the RANDFILE configuration file option or
8609 environment variable, or the default random state file.
8610 [Richard Levitte]
8611
8612 *) mkstack.pl now sorts each macro group into lexical order.
8613 Previously the output order depended on the order the files
8614 appeared in the directory, resulting in needless rewriting
8615 of safestack.h .
8616 [Steve Henson]
8617
8618 *) Patches to make OpenSSL compile under Win32 again. Mostly
8619 work arounds for the VC++ problem that it treats func() as
8620 func(void). Also stripped out the parts of mkdef.pl that
8621 added extra typesafe functions: these no longer exist.
8622 [Steve Henson]
8623
8624 *) Reorganisation of the stack code. The macros are now all
8625 collected in safestack.h . Each macro is defined in terms of
8626 a "stack macro" of the form SKM_<name>(type, a, b). The
8627 DEBUG_SAFESTACK is now handled in terms of function casts,
8628 this has the advantage of retaining type safety without the
8629 use of additional functions. If DEBUG_SAFESTACK is not defined
8630 then the non typesafe macros are used instead. Also modified the
8631 mkstack.pl script to handle the new form. Needs testing to see
8632 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
8633 the default if no major problems. Similar behaviour for ASN1_SET_OF
8634 and PKCS12_STACK_OF.
8635 [Steve Henson]
8636
8637 *) When some versions of IIS use the 'NET' form of private key the
8638 key derivation algorithm is different. Normally MD5(password) is
8639 used as a 128 bit RC4 key. In the modified case
8640 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
8641 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
8642 as the old Netscape_RSA functions except they have an additional
8643 'sgckey' parameter which uses the modified algorithm. Also added
8644 an -sgckey command line option to the rsa utility. Thanks to
8645 Adrian Peck <bertie@ncipher.com> for posting details of the modified
8646 algorithm to openssl-dev.
8647 [Steve Henson]
8648
8649 *) The evp_local.h macros were using 'c.##kname' which resulted in
8650 invalid expansion on some systems (SCO 5.0.5 for example).
8651 Corrected to 'c.kname'.
8652 [Phillip Porch <root@theporch.com>]
8653
8654 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
8655 a STACK of email addresses from a certificate or request, these look
8656 in the subject name and the subject alternative name extensions and
8657 omit any duplicate addresses.
8658 [Steve Henson]
8659
8660 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
8661 This makes DSA verification about 2 % faster.
8662 [Bodo Moeller]
8663
8664 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
8665 (meaning that now 2^5 values will be precomputed, which is only 4 KB
8666 plus overhead for 1024 bit moduli).
8667 This makes exponentiations about 0.5 % faster for 1024 bit
8668 exponents (as measured by "openssl speed rsa2048").
8669 [Bodo Moeller]
8670
8671 *) Rename memory handling macros to avoid conflicts with other
8672 software:
8673 Malloc => OPENSSL_malloc
8674 Malloc_locked => OPENSSL_malloc_locked
8675 Realloc => OPENSSL_realloc
8676 Free => OPENSSL_free
8677 [Richard Levitte]
8678
8679 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
8680 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
8681 [Bodo Moeller]
8682
8683 *) CygWin32 support.
8684 [John Jarvie <jjarvie@newsguy.com>]
8685
8686 *) The type-safe stack code has been rejigged. It is now only compiled
8687 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
8688 by default all type-specific stack functions are "#define"d back to
8689 standard stack functions. This results in more streamlined output
8690 but retains the type-safety checking possibilities of the original
8691 approach.
8692 [Geoff Thorpe]
8693
8694 *) The STACK code has been cleaned up, and certain type declarations
8695 that didn't make a lot of sense have been brought in line. This has
8696 also involved a cleanup of sorts in safestack.h to more correctly
8697 map type-safe stack functions onto their plain stack counterparts.
8698 This work has also resulted in a variety of "const"ifications of
8699 lots of the code, especially "_cmp" operations which should normally
8700 be prototyped with "const" parameters anyway.
8701 [Geoff Thorpe]
8702
8703 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
8704 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
8705 (The PRNG state consists of two parts, the large pool 'state' and 'md',
8706 where all of 'md' is used each time the PRNG is used, but 'state'
8707 is used only indexed by a cyclic counter. As entropy may not be
8708 well distributed from the beginning, 'md' is important as a
8709 chaining variable. However, the output function chains only half
8710 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
8711 all of 'md', and seeding with STATE_SIZE dummy bytes will result
8712 in all of 'state' being rewritten, with the new values depending
8713 on virtually all of 'md'. This overcomes the 80 bit limitation.)
8714 [Bodo Moeller]
8715
8716 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
8717 the handshake is continued after ssl_verify_cert_chain();
8718 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
8719 can lead to 'unexplainable' connection aborts later.
8720 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
8721
8722 *) Major EVP API cipher revision.
8723 Add hooks for extra EVP features. This allows various cipher
8724 parameters to be set in the EVP interface. Support added for variable
8725 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
8726 setting of RC2 and RC5 parameters.
8727
8728 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
8729 ciphers.
8730
8731 Remove lots of duplicated code from the EVP library. For example *every*
8732 cipher init() function handles the 'iv' in the same way according to the
8733 cipher mode. They also all do nothing if the 'key' parameter is NULL and
8734 for CFB and OFB modes they zero ctx->num.
8735
8736 New functionality allows removal of S/MIME code RC2 hack.
8737
8738 Most of the routines have the same form and so can be declared in terms
8739 of macros.
8740
8741 By shifting this to the top level EVP_CipherInit() it can be removed from
8742 all individual ciphers. If the cipher wants to handle IVs or keys
8743 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
8744 flags.
8745
8746 Change lots of functions like EVP_EncryptUpdate() to now return a
8747 value: although software versions of the algorithms cannot fail
8748 any installed hardware versions can.
8749 [Steve Henson]
8750
8751 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
8752 this option is set, tolerate broken clients that send the negotiated
8753 protocol version number instead of the requested protocol version
8754 number.
8755 [Bodo Moeller]
8756
8757 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
8758 i.e. non-zero for export ciphersuites, zero otherwise.
8759 Previous versions had this flag inverted, inconsistent with
8760 rsa_tmp_cb (..._TMP_RSA_CB).
8761 [Bodo Moeller; problem reported by Amit Chopra]
8762
8763 *) Add missing DSA library text string. Work around for some IIS
8764 key files with invalid SEQUENCE encoding.
8765 [Steve Henson]
8766
8767 *) Add a document (doc/standards.txt) that list all kinds of standards
8768 and so on that are implemented in OpenSSL.
8769 [Richard Levitte]
8770
8771 *) Enhance c_rehash script. Old version would mishandle certificates
8772 with the same subject name hash and wouldn't handle CRLs at all.
8773 Added -fingerprint option to crl utility, to support new c_rehash
8774 features.
8775 [Steve Henson]
8776
8777 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
8778 [Ulf Möller]
8779
8780 *) Fix for SSL server purpose checking. Server checking was
8781 rejecting certificates which had extended key usage present
8782 but no ssl client purpose.
8783 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
8784
8785 *) Make PKCS#12 code work with no password. The PKCS#12 spec
8786 is a little unclear about how a blank password is handled.
8787 Since the password in encoded as a BMPString with terminating
8788 double NULL a zero length password would end up as just the
8789 double NULL. However no password at all is different and is
8790 handled differently in the PKCS#12 key generation code. NS
8791 treats a blank password as zero length. MSIE treats it as no
8792 password on export: but it will try both on import. We now do
8793 the same: PKCS12_parse() tries zero length and no password if
8794 the password is set to "" or NULL (NULL is now a valid password:
8795 it wasn't before) as does the pkcs12 application.
8796 [Steve Henson]
8797
8798 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
8799 perror when PEM_read_bio_X509_REQ fails, the error message must
8800 be obtained from the error queue.
8801 [Bodo Moeller]
8802
8803 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
8804 it in ERR_remove_state if appropriate, and change ERR_get_state
8805 accordingly to avoid race conditions (this is necessary because
8806 thread_hash is no longer constant once set).
8807 [Bodo Moeller]
8808
8809 *) Bugfix for linux-elf makefile.one.
8810 [Ulf Möller]
8811
8812 *) RSA_get_default_method() will now cause a default
8813 RSA_METHOD to be chosen if one doesn't exist already.
8814 Previously this was only set during a call to RSA_new()
8815 or RSA_new_method(NULL) meaning it was possible for
8816 RSA_get_default_method() to return NULL.
8817 [Geoff Thorpe]
8818
8819 *) Added native name translation to the existing DSO code
8820 that will convert (if the flag to do so is set) filenames
8821 that are sufficiently small and have no path information
8822 into a canonical native form. Eg. "blah" converted to
8823 "libblah.so" or "blah.dll" etc.
8824 [Geoff Thorpe]
8825
8826 *) New function ERR_error_string_n(e, buf, len) which is like
8827 ERR_error_string(e, buf), but writes at most 'len' bytes
8828 including the 0 terminator. For ERR_error_string_n, 'buf'
8829 may not be NULL.
8830 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
8831
8832 *) CONF library reworked to become more general. A new CONF
8833 configuration file reader "class" is implemented as well as a
8834 new functions (NCONF_*, for "New CONF") to handle it. The now
8835 old CONF_* functions are still there, but are reimplemented to
8836 work in terms of the new functions. Also, a set of functions
8837 to handle the internal storage of the configuration data is
8838 provided to make it easier to write new configuration file
8839 reader "classes" (I can definitely see something reading a
8840 configuration file in XML format, for example), called _CONF_*,
8841 or "the configuration storage API"...
8842
8843 The new configuration file reading functions are:
8844
8845 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
8846 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
8847
8848 NCONF_default, NCONF_WIN32
8849
8850 NCONF_dump_fp, NCONF_dump_bio
8851
8852 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
8853 NCONF_new creates a new CONF object. This works in the same way
8854 as other interfaces in OpenSSL, like the BIO interface.
8855 NCONF_dump_* dump the internal storage of the configuration file,
8856 which is useful for debugging. All other functions take the same
8857 arguments as the old CONF_* functions wth the exception of the
8858 first that must be a `CONF *' instead of a `LHASH *'.
8859
8860 To make it easer to use the new classes with the old CONF_* functions,
8861 the function CONF_set_default_method is provided.
8862 [Richard Levitte]
8863
8864 *) Add '-tls1' option to 'openssl ciphers', which was already
8865 mentioned in the documentation but had not been implemented.
8866 (This option is not yet really useful because even the additional
8867 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
8868 [Bodo Moeller]
8869
8870 *) Initial DSO code added into libcrypto for letting OpenSSL (and
8871 OpenSSL-based applications) load shared libraries and bind to
8872 them in a portable way.
8873 [Geoff Thorpe, with contributions from Richard Levitte]
8874
8875 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
8876
8877 *) Make sure _lrotl and _lrotr are only used with MSVC.
8878
8879 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
8880 (the default implementation of RAND_status).
8881
8882 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
8883 to '-clrext' (= clear extensions), as intended and documented.
8884 [Bodo Moeller; inconsistency pointed out by Michael Attili
8885 <attili@amaxo.com>]
8886
8887 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
8888 was larger than the MD block size.
8889 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
8890
8891 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
8892 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
8893 using the passed key: if the passed key was a private key the result
8894 of X509_print(), for example, would be to print out all the private key
8895 components.
8896 [Steve Henson]
8897
8898 *) des_quad_cksum() byte order bug fix.
8899 [Ulf Möller, using the problem description in krb4-0.9.7, where
8900 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
8901
8902 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
8903 discouraged.
8904 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
8905
8906 *) For easily testing in shell scripts whether some command
8907 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
8908 returns with exit code 0 iff no command of the given name is available.
8909 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
8910 the output goes to stdout and nothing is printed to stderr.
8911 Additional arguments are always ignored.
8912
8913 Since for each cipher there is a command of the same name,
8914 the 'no-cipher' compilation switches can be tested this way.
8915
8916 ('openssl no-XXX' is not able to detect pseudo-commands such
8917 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
8918 [Bodo Moeller]
8919
8920 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
8921 [Bodo Moeller]
8922
8923 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
8924 is set; it will be thrown away anyway because each handshake creates
8925 its own key.
8926 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
8927 to parameters -- in previous versions (since OpenSSL 0.9.3) the
8928 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
8929 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
8930 [Bodo Moeller]
8931
8932 *) New s_client option -ign_eof: EOF at stdin is ignored, and
8933 'Q' and 'R' lose their special meanings (quit/renegotiate).
8934 This is part of what -quiet does; unlike -quiet, -ign_eof
8935 does not suppress any output.
8936 [Richard Levitte]
8937
8938 *) Add compatibility options to the purpose and trust code. The
8939 purpose X509_PURPOSE_ANY is "any purpose" which automatically
8940 accepts a certificate or CA, this was the previous behaviour,
8941 with all the associated security issues.
8942
8943 X509_TRUST_COMPAT is the old trust behaviour: only and
8944 automatically trust self signed roots in certificate store. A
8945 new trust setting X509_TRUST_DEFAULT is used to specify that
8946 a purpose has no associated trust setting and it should instead
8947 use the value in the default purpose.
8948 [Steve Henson]
8949
8950 *) Fix the PKCS#8 DSA private key code so it decodes keys again
8951 and fix a memory leak.
8952 [Steve Henson]
8953
8954 *) In util/mkerr.pl (which implements 'make errors'), preserve
8955 reason strings from the previous version of the .c file, as
8956 the default to have only downcase letters (and digits) in
8957 automatically generated reasons codes is not always appropriate.
8958 [Bodo Moeller]
8959
8960 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
8961 using strerror. Previously, ERR_reason_error_string() returned
8962 library names as reason strings for SYSerr; but SYSerr is a special
8963 case where small numbers are errno values, not library numbers.
8964 [Bodo Moeller]
8965
8966 *) Add '-dsaparam' option to 'openssl dhparam' application. This
8967 converts DSA parameters into DH parameters. (When creating parameters,
8968 DSA_generate_parameters is used.)
8969 [Bodo Moeller]
8970
8971 *) Include 'length' (recommended exponent length) in C code generated
8972 by 'openssl dhparam -C'.
8973 [Bodo Moeller]
8974
8975 *) The second argument to set_label in perlasm was already being used
8976 so couldn't be used as a "file scope" flag. Moved to third argument
8977 which was free.
8978 [Steve Henson]
8979
8980 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
8981 instead of RAND_bytes for encryption IVs and salts.
8982 [Bodo Moeller]
8983
8984 *) Include RAND_status() into RAND_METHOD instead of implementing
8985 it only for md_rand.c Otherwise replacing the PRNG by calling
8986 RAND_set_rand_method would be impossible.
8987 [Bodo Moeller]
8988
8989 *) Don't let DSA_generate_key() enter an infinite loop if the random
8990 number generation fails.
8991 [Bodo Moeller]
8992
8993 *) New 'rand' application for creating pseudo-random output.
8994 [Bodo Moeller]
8995
8996 *) Added configuration support for Linux/IA64
8997 [Rolf Haberrecker <rolf@suse.de>]
8998
8999 *) Assembler module support for Mingw32.
9000 [Ulf Möller]
9001
9002 *) Shared library support for HPUX (in shlib/).
9003 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9004
9005 *) Shared library support for Solaris gcc.
9006 [Lutz Behnke <behnke@trustcenter.de>]
9007
9008 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9009
9010 *) PKCS7_encrypt() was adding text MIME headers twice because they
9011 were added manually and by SMIME_crlf_copy().
9012 [Steve Henson]
9013
9014 *) In bntest.c don't call BN_rand with zero bits argument.
9015 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9016
9017 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9018 case was implemented. This caused BN_div_recp() to fail occasionally.
9019 [Ulf Möller]
9020
9021 *) Add an optional second argument to the set_label() in the perl
9022 assembly language builder. If this argument exists and is set
9023 to 1 it signals that the assembler should use a symbol whose
9024 scope is the entire file, not just the current function. This
9025 is needed with MASM which uses the format label:: for this scope.
9026 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9027
9028 *) Change the ASN1 types so they are typedefs by default. Before
9029 almost all types were #define'd to ASN1_STRING which was causing
9030 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9031 for example.
9032 [Steve Henson]
9033
9034 *) Change names of new functions to the new get1/get0 naming
9035 convention: After 'get1', the caller owns a reference count
9036 and has to call ..._free; 'get0' returns a pointer to some
9037 data structure without incrementing reference counters.
9038 (Some of the existing 'get' functions increment a reference
9039 counter, some don't.)
9040 Similarly, 'set1' and 'add1' functions increase reference
9041 counters or duplicate objects.
9042 [Steve Henson]
9043
9044 *) Allow for the possibility of temp RSA key generation failure:
9045 the code used to assume it always worked and crashed on failure.
9046 [Steve Henson]
9047
9048 *) Fix potential buffer overrun problem in BIO_printf().
9049 [Ulf Möller, using public domain code by Patrick Powell; problem
9050 pointed out by David Sacerdote <das33@cornell.edu>]
9051
9052 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9053 RAND_egd() and RAND_status(). In the command line application,
9054 the EGD socket can be specified like a seed file using RANDFILE
9055 or -rand.
9056 [Ulf Möller]
9057
9058 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9059 Some CAs (e.g. Verisign) distribute certificates in this form.
9060 [Steve Henson]
9061
9062 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9063 list to exclude them. This means that no special compilation option
9064 is needed to use anonymous DH: it just needs to be included in the
9065 cipher list.
9066 [Steve Henson]
9067
9068 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9069 EVP_MD_type. The old functionality is available in a new macro called
9070 EVP_MD_md(). Change code that uses it and update docs.
9071 [Steve Henson]
9072
9073 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9074 where the 'void *' argument is replaced by a function pointer argument.
9075 Previously 'void *' was abused to point to functions, which works on
9076 many platforms, but is not correct. As these functions are usually
9077 called by macros defined in OpenSSL header files, most source code
9078 should work without changes.
9079 [Richard Levitte]
9080
9081 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9082 sections with information on -D... compiler switches used for
9083 compiling the library so that applications can see them. To enable
9084 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9085 must be defined. E.g.,
9086 #define OPENSSL_ALGORITHM_DEFINES
9087 #include <openssl/opensslconf.h>
9088 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9089 [Richard Levitte, Ulf and Bodo Möller]
9090
9091 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9092 record layer.
9093 [Bodo Moeller]
9094
9095 *) Change the 'other' type in certificate aux info to a STACK_OF
9096 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9097 the required ASN1 format: arbitrary types determined by an OID.
9098 [Steve Henson]
9099
9100 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9101 argument to 'req'. This is not because the function is newer or
9102 better than others it just uses the work 'NEW' in the certificate
9103 request header lines. Some software needs this.
9104 [Steve Henson]
9105
9106 *) Reorganise password command line arguments: now passwords can be
9107 obtained from various sources. Delete the PEM_cb function and make
9108 it the default behaviour: i.e. if the callback is NULL and the
9109 usrdata argument is not NULL interpret it as a null terminated pass
9110 phrase. If usrdata and the callback are NULL then the pass phrase
9111 is prompted for as usual.
9112 [Steve Henson]
9113
9114 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9115 the support is automatically enabled. The resulting binaries will
9116 autodetect the card and use it if present.
9117 [Ben Laurie and Compaq Inc.]
9118
9119 *) Work around for Netscape hang bug. This sends certificate request
9120 and server done in one record. Since this is perfectly legal in the
9121 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9122 the bugs/SSLv3 entry for more info.
9123 [Steve Henson]
9124
9125 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9126 [Andy Polyakov]
9127
9128 *) Add -rand argument to smime and pkcs12 applications and read/write
9129 of seed file.
9130 [Steve Henson]
9131
9132 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
9133 [Bodo Moeller]
9134
9135 *) Add command line password options to the remaining applications.
9136 [Steve Henson]
9137
9138 *) Bug fix for BN_div_recp() for numerators with an even number of
9139 bits.
9140 [Ulf Möller]
9141
9142 *) More tests in bntest.c, and changed test_bn output.
9143 [Ulf Möller]
9144
9145 *) ./config recognizes MacOS X now.
9146 [Andy Polyakov]
9147
9148 *) Bug fix for BN_div() when the first words of num and divsor are
9149 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
9150 [Ulf Möller]
9151
9152 *) Add support for various broken PKCS#8 formats, and command line
9153 options to produce them.
9154 [Steve Henson]
9155
9156 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
9157 get temporary BIGNUMs from a BN_CTX.
9158 [Ulf Möller]
9159
9160 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
9161 for p == 0.
9162 [Ulf Möller]
9163
9164 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
9165 include a #define from the old name to the new. The original intent
9166 was that statically linked binaries could for example just call
9167 SSLeay_add_all_ciphers() to just add ciphers to the table and not
9168 link with digests. This never worked becayse SSLeay_add_all_digests()
9169 and SSLeay_add_all_ciphers() were in the same source file so calling
9170 one would link with the other. They are now in separate source files.
9171 [Steve Henson]
9172
9173 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
9174 [Steve Henson]
9175
9176 *) Use a less unusual form of the Miller-Rabin primality test (it used
9177 a binary algorithm for exponentiation integrated into the Miller-Rabin
9178 loop, our standard modexp algorithms are faster).
9179 [Bodo Moeller]
9180
9181 *) Support for the EBCDIC character set completed.
9182 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
9183
9184 *) Source code cleanups: use const where appropriate, eliminate casts,
9185 use void * instead of char * in lhash.
9186 [Ulf Möller]
9187
9188 *) Bugfix: ssl3_send_server_key_exchange was not restartable
9189 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
9190 this the server could overwrite ephemeral keys that the client
9191 has already seen).
9192 [Bodo Moeller]
9193
9194 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
9195 using 50 iterations of the Rabin-Miller test.
9196
9197 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
9198 iterations of the Rabin-Miller test as required by the appendix
9199 to FIPS PUB 186[-1]) instead of DSA_is_prime.
9200 As BN_is_prime_fasttest includes trial division, DSA parameter
9201 generation becomes much faster.
9202
9203 This implies a change for the callback functions in DSA_is_prime
9204 and DSA_generate_parameters: The callback function is called once
9205 for each positive witness in the Rabin-Miller test, not just
9206 occasionally in the inner loop; and the parameters to the
9207 callback function now provide an iteration count for the outer
9208 loop rather than for the current invocation of the inner loop.
9209 DSA_generate_parameters additionally can call the callback
9210 function with an 'iteration count' of -1, meaning that a
9211 candidate has passed the trial division test (when q is generated
9212 from an application-provided seed, trial division is skipped).
9213 [Bodo Moeller]
9214
9215 *) New function BN_is_prime_fasttest that optionally does trial
9216 division before starting the Rabin-Miller test and has
9217 an additional BN_CTX * argument (whereas BN_is_prime always
9218 has to allocate at least one BN_CTX).
9219 'callback(1, -1, cb_arg)' is called when a number has passed the
9220 trial division stage.
9221 [Bodo Moeller]
9222
9223 *) Fix for bug in CRL encoding. The validity dates weren't being handled
9224 as ASN1_TIME.
9225 [Steve Henson]
9226
9227 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
9228 [Steve Henson]
9229
9230 *) New function BN_pseudo_rand().
9231 [Ulf Möller]
9232
9233 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
9234 bignum version of BN_from_montgomery() with the working code from
9235 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
9236 the comments.
9237 [Ulf Möller]
9238
9239 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
9240 made it impossible to use the same SSL_SESSION data structure in
9241 SSL2 clients in multiple threads.
9242 [Bodo Moeller]
9243
9244 *) The return value of RAND_load_file() no longer counts bytes obtained
9245 by stat(). RAND_load_file(..., -1) is new and uses the complete file
9246 to seed the PRNG (previously an explicit byte count was required).
9247 [Ulf Möller, Bodo Möller]
9248
9249 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
9250 used (char *) instead of (void *) and had casts all over the place.
9251 [Steve Henson]
9252
9253 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
9254 [Ulf Möller]
9255
9256 *) Retain source code compatibility for BN_prime_checks macro:
9257 BN_is_prime(..., BN_prime_checks, ...) now uses
9258 BN_prime_checks_for_size to determine the appropriate number of
9259 Rabin-Miller iterations.
9260 [Ulf Möller]
9261
9262 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
9263 DH_CHECK_P_NOT_SAFE_PRIME.
9264 (Check if this is true? OpenPGP calls them "strong".)
9265 [Ulf Möller]
9266
9267 *) Merge the functionality of "dh" and "gendh" programs into a new program
9268 "dhparam". The old programs are retained for now but will handle DH keys
9269 (instead of parameters) in future.
9270 [Steve Henson]
9271
9272 *) Make the ciphers, s_server and s_client programs check the return values
9273 when a new cipher list is set.
9274 [Steve Henson]
9275
9276 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
9277 ciphers. Before when the 56bit ciphers were enabled the sorting was
9278 wrong.
9279
9280 The syntax for the cipher sorting has been extended to support sorting by
9281 cipher-strength (using the strength_bits hard coded in the tables).
9282 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
9283
9284 Fix a bug in the cipher-command parser: when supplying a cipher command
9285 string with an "undefined" symbol (neither command nor alphanumeric
9286 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
9287 an error is flagged.
9288
9289 Due to the strength-sorting extension, the code of the
9290 ssl_create_cipher_list() function was completely rearranged. I hope that
9291 the readability was also increased :-)
9292 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9293
9294 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
9295 for the first serial number and places 2 in the serial number file. This
9296 avoids problems when the root CA is created with serial number zero and
9297 the first user certificate has the same issuer name and serial number
9298 as the root CA.
9299 [Steve Henson]
9300
9301 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
9302 the new code. Add documentation for this stuff.
9303 [Steve Henson]
9304
9305 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
9306 X509_*() to X509at_*() on the grounds that they don't handle X509
9307 structures and behave in an analagous way to the X509v3 functions:
9308 they shouldn't be called directly but wrapper functions should be used
9309 instead.
9310
9311 So we also now have some wrapper functions that call the X509at functions
9312 when passed certificate requests. (TO DO: similar things can be done with
9313 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
9314 things. Some of these need some d2i or i2d and print functionality
9315 because they handle more complex structures.)
9316 [Steve Henson]
9317
9318 *) Add missing #ifndefs that caused missing symbols when building libssl
9319 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
9320 NO_RSA in ssl/s2*.c.
9321 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
9322
9323 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
9324 has a return value which indicates the quality of the random data
9325 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
9326 error queue. New function RAND_pseudo_bytes() generates output that is
9327 guaranteed to be unique but not unpredictable. RAND_add is like
9328 RAND_seed, but takes an extra argument for an entropy estimate
9329 (RAND_seed always assumes full entropy).
9330 [Ulf Möller]
9331
9332 *) Do more iterations of Rabin-Miller probable prime test (specifically,
9333 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
9334 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
9335 in crypto/bn/bn_prime.c for the complete table). This guarantees a
9336 false-positive rate of at most 2^-80 for random input.
9337 [Bodo Moeller]
9338
9339 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
9340 [Bodo Moeller]
9341
9342 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
9343 in the 0.9.5 release), this returns the chain
9344 from an X509_CTX structure with a dup of the stack and all
9345 the X509 reference counts upped: so the stack will exist
9346 after X509_CTX_cleanup() has been called. Modify pkcs12.c
9347 to use this.
9348
9349 Also make SSL_SESSION_print() print out the verify return
9350 code.
9351 [Steve Henson]
9352
9353 *) Add manpage for the pkcs12 command. Also change the default
9354 behaviour so MAC iteration counts are used unless the new
9355 -nomaciter option is used. This improves file security and
9356 only older versions of MSIE (4.0 for example) need it.
9357 [Steve Henson]
9358
9359 *) Honor the no-xxx Configure options when creating .DEF files.
9360 [Ulf Möller]
9361
9362 *) Add PKCS#10 attributes to field table: challengePassword,
9363 unstructuredName and unstructuredAddress. These are taken from
9364 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
9365 international characters are used.
9366
9367 More changes to X509_ATTRIBUTE code: allow the setting of types
9368 based on strings. Remove the 'loc' parameter when adding
9369 attributes because these will be a SET OF encoding which is sorted
9370 in ASN1 order.
9371 [Steve Henson]
9372
9373 *) Initial changes to the 'req' utility to allow request generation
9374 automation. This will allow an application to just generate a template
9375 file containing all the field values and have req construct the
9376 request.
9377
9378 Initial support for X509_ATTRIBUTE handling. Stacks of these are
9379 used all over the place including certificate requests and PKCS#7
9380 structures. They are currently handled manually where necessary with
9381 some primitive wrappers for PKCS#7. The new functions behave in a
9382 manner analogous to the X509 extension functions: they allow
9383 attributes to be looked up by NID and added.
9384
9385 Later something similar to the X509V3 code would be desirable to
9386 automatically handle the encoding, decoding and printing of the
9387 more complex types. The string types like challengePassword can
9388 be handled by the string table functions.
9389
9390 Also modified the multi byte string table handling. Now there is
9391 a 'global mask' which masks out certain types. The table itself
9392 can use the flag STABLE_NO_MASK to ignore the mask setting: this
9393 is useful when for example there is only one permissible type
9394 (as in countryName) and using the mask might result in no valid
9395 types at all.
9396 [Steve Henson]
9397
9398 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
9399 SSL_get_peer_finished to allow applications to obtain the latest
9400 Finished messages sent to the peer or expected from the peer,
9401 respectively. (SSL_get_peer_finished is usually the Finished message
9402 actually received from the peer, otherwise the protocol will be aborted.)
9403
9404 As the Finished message are message digests of the complete handshake
9405 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
9406 be used for external authentication procedures when the authentication
9407 provided by SSL/TLS is not desired or is not enough.
9408 [Bodo Moeller]
9409
9410 *) Enhanced support for Alpha Linux is added. Now ./config checks if
9411 the host supports BWX extension and if Compaq C is present on the
9412 $PATH. Just exploiting of the BWX extension results in 20-30%
9413 performance kick for some algorithms, e.g. DES and RC4 to mention
9414 a couple. Compaq C in turn generates ~20% faster code for MD5 and
9415 SHA1.
9416 [Andy Polyakov]
9417
9418 *) Add support for MS "fast SGC". This is arguably a violation of the
9419 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
9420 weak crypto and after checking the certificate is SGC a second one
9421 with strong crypto. MS SGC stops the first handshake after receiving
9422 the server certificate message and sends a second client hello. Since
9423 a server will typically do all the time consuming operations before
9424 expecting any further messages from the client (server key exchange
9425 is the most expensive) there is little difference between the two.
9426
9427 To get OpenSSL to support MS SGC we have to permit a second client
9428 hello message after we have sent server done. In addition we have to
9429 reset the MAC if we do get this second client hello.
9430 [Steve Henson]
9431
9432 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
9433 if a DER encoded private key is RSA or DSA traditional format. Changed
9434 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
9435 format DER encoded private key. Newer code should use PKCS#8 format which
9436 has the key type encoded in the ASN1 structure. Added DER private key
9437 support to pkcs8 application.
9438 [Steve Henson]
9439
9440 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
9441 ciphersuites has been selected (as required by the SSL 3/TLS 1
9442 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
9443 is set, we interpret this as a request to violate the specification
9444 (the worst that can happen is a handshake failure, and 'correct'
9445 behaviour would result in a handshake failure anyway).
9446 [Bodo Moeller]
9447
9448 *) In SSL_CTX_add_session, take into account that there might be multiple
9449 SSL_SESSION structures with the same session ID (e.g. when two threads
9450 concurrently obtain them from an external cache).
9451 The internal cache can handle only one SSL_SESSION with a given ID,
9452 so if there's a conflict, we now throw out the old one to achieve
9453 consistency.
9454 [Bodo Moeller]
9455
9456 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
9457 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
9458 some routines that use cipher OIDs: some ciphers do not have OIDs
9459 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
9460 example.
9461 [Steve Henson]
9462
9463 *) Simplify the trust setting structure and code. Now we just have
9464 two sequences of OIDs for trusted and rejected settings. These will
9465 typically have values the same as the extended key usage extension
9466 and any application specific purposes.
9467
9468 The trust checking code now has a default behaviour: it will just
9469 check for an object with the same NID as the passed id. Functions can
9470 be provided to override either the default behaviour or the behaviour
9471 for a given id. SSL client, server and email already have functions
9472 in place for compatibility: they check the NID and also return "trusted"
9473 if the certificate is self signed.
9474 [Steve Henson]
9475
9476 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
9477 traditional format into an EVP_PKEY structure.
9478 [Steve Henson]
9479
9480 *) Add a password callback function PEM_cb() which either prompts for
9481 a password if usr_data is NULL or otherwise assumes it is a null
9482 terminated password. Allow passwords to be passed on command line
9483 environment or config files in a few more utilities.
9484 [Steve Henson]
9485
9486 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
9487 keys. Add some short names for PKCS#8 PBE algorithms and allow them
9488 to be specified on the command line for the pkcs8 and pkcs12 utilities.
9489 Update documentation.
9490 [Steve Henson]
9491
9492 *) Support for ASN1 "NULL" type. This could be handled before by using
9493 ASN1_TYPE but there wasn't any function that would try to read a NULL
9494 and produce an error if it couldn't. For compatibility we also have
9495 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
9496 don't allocate anything because they don't need to.
9497 [Steve Henson]
9498
9499 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
9500 for details.
9501 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
9502
9503 *) Rebuild of the memory allocation routines used by OpenSSL code and
9504 possibly others as well. The purpose is to make an interface that
9505 provide hooks so anyone can build a separate set of allocation and
9506 deallocation routines to be used by OpenSSL, for example memory
9507 pool implementations, or something else, which was previously hard
9508 since Malloc(), Realloc() and Free() were defined as macros having
9509 the values malloc, realloc and free, respectively (except for Win32
9510 compilations). The same is provided for memory debugging code.
9511 OpenSSL already comes with functionality to find memory leaks, but
9512 this gives people a chance to debug other memory problems.
9513
9514 With these changes, a new set of functions and macros have appeared:
9515
9516 CRYPTO_set_mem_debug_functions() [F]
9517 CRYPTO_get_mem_debug_functions() [F]
9518 CRYPTO_dbg_set_options() [F]
9519 CRYPTO_dbg_get_options() [F]
9520 CRYPTO_malloc_debug_init() [M]
9521
9522 The memory debug functions are NULL by default, unless the library
9523 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
9524 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
9525 gives the standard debugging functions that come with OpenSSL) or
9526 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
9527 provided by the library user) must be used. When the standard
9528 debugging functions are used, CRYPTO_dbg_set_options can be used to
9529 request additional information:
9530 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
9531 the CRYPTO_MDEBUG_xxx macro when compiling the library.
9532
9533 Also, things like CRYPTO_set_mem_functions will always give the
9534 expected result (the new set of functions is used for allocation
9535 and deallocation) at all times, regardless of platform and compiler
9536 options.
9537
9538 To finish it up, some functions that were never use in any other
9539 way than through macros have a new API and new semantic:
9540
9541 CRYPTO_dbg_malloc()
9542 CRYPTO_dbg_realloc()
9543 CRYPTO_dbg_free()
9544
9545 All macros of value have retained their old syntax.
9546 [Richard Levitte and Bodo Moeller]
9547
9548 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
9549 ordering of SMIMECapabilities wasn't in "strength order" and there
9550 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
9551 algorithm.
9552 [Steve Henson]
9553
9554 *) Some ASN1 types with illegal zero length encoding (INTEGER,
9555 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
9556 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
9557
9558 *) Merge in my S/MIME library for OpenSSL. This provides a simple
9559 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
9560 functionality to handle multipart/signed properly) and a utility
9561 called 'smime' to call all this stuff. This is based on code I
9562 originally wrote for Celo who have kindly allowed it to be
9563 included in OpenSSL.
9564 [Steve Henson]
9565
9566 *) Add variants des_set_key_checked and des_set_key_unchecked of
9567 des_set_key (aka des_key_sched). Global variable des_check_key
9568 decides which of these is called by des_set_key; this way
9569 des_check_key behaves as it always did, but applications and
9570 the library itself, which was buggy for des_check_key == 1,
9571 have a cleaner way to pick the version they need.
9572 [Bodo Moeller]
9573
9574 *) New function PKCS12_newpass() which changes the password of a
9575 PKCS12 structure.
9576 [Steve Henson]
9577
9578 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
9579 dynamic mix. In both cases the ids can be used as an index into the
9580 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
9581 functions so they accept a list of the field values and the
9582 application doesn't need to directly manipulate the X509_TRUST
9583 structure.
9584 [Steve Henson]
9585
9586 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
9587 need initialising.
9588 [Steve Henson]
9589
9590 *) Modify the way the V3 extension code looks up extensions. This now
9591 works in a similar way to the object code: we have some "standard"
9592 extensions in a static table which is searched with OBJ_bsearch()
9593 and the application can add dynamic ones if needed. The file
9594 crypto/x509v3/ext_dat.h now has the info: this file needs to be
9595 updated whenever a new extension is added to the core code and kept
9596 in ext_nid order. There is a simple program 'tabtest.c' which checks
9597 this. New extensions are not added too often so this file can readily
9598 be maintained manually.
9599
9600 There are two big advantages in doing things this way. The extensions
9601 can be looked up immediately and no longer need to be "added" using
9602 X509V3_add_standard_extensions(): this function now does nothing.
9603 [Side note: I get *lots* of email saying the extension code doesn't
9604 work because people forget to call this function]
9605 Also no dynamic allocation is done unless new extensions are added:
9606 so if we don't add custom extensions there is no need to call
9607 X509V3_EXT_cleanup().
9608 [Steve Henson]
9609
9610 *) Modify enc utility's salting as follows: make salting the default. Add a
9611 magic header, so unsalted files fail gracefully instead of just decrypting
9612 to garbage. This is because not salting is a big security hole, so people
9613 should be discouraged from doing it.
9614 [Ben Laurie]
9615
9616 *) Fixes and enhancements to the 'x509' utility. It allowed a message
9617 digest to be passed on the command line but it only used this
9618 parameter when signing a certificate. Modified so all relevant
9619 operations are affected by the digest parameter including the
9620 -fingerprint and -x509toreq options. Also -x509toreq choked if a
9621 DSA key was used because it didn't fix the digest.
9622 [Steve Henson]
9623
9624 *) Initial certificate chain verify code. Currently tests the untrusted
9625 certificates for consistency with the verify purpose (which is set
9626 when the X509_STORE_CTX structure is set up) and checks the pathlength.
9627
9628 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
9629 this is because it will reject chains with invalid extensions whereas
9630 every previous version of OpenSSL and SSLeay made no checks at all.
9631
9632 Trust code: checks the root CA for the relevant trust settings. Trust
9633 settings have an initial value consistent with the verify purpose: e.g.
9634 if the verify purpose is for SSL client use it expects the CA to be
9635 trusted for SSL client use. However the default value can be changed to
9636 permit custom trust settings: one example of this would be to only trust
9637 certificates from a specific "secure" set of CAs.
9638
9639 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
9640 which should be used for version portability: especially since the
9641 verify structure is likely to change more often now.
9642
9643 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
9644 to set them. If not set then assume SSL clients will verify SSL servers
9645 and vice versa.
9646
9647 Two new options to the verify program: -untrusted allows a set of
9648 untrusted certificates to be passed in and -purpose which sets the
9649 intended purpose of the certificate. If a purpose is set then the
9650 new chain verify code is used to check extension consistency.
9651 [Steve Henson]
9652
9653 *) Support for the authority information access extension.
9654 [Steve Henson]
9655
9656 *) Modify RSA and DSA PEM read routines to transparently handle
9657 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
9658 public keys in a format compatible with certificate
9659 SubjectPublicKeyInfo structures. Unfortunately there were already
9660 functions called *_PublicKey_* which used various odd formats so
9661 these are retained for compatibility: however the DSA variants were
9662 never in a public release so they have been deleted. Changed dsa/rsa
9663 utilities to handle the new format: note no releases ever handled public
9664 keys so we should be OK.
9665
9666 The primary motivation for this change is to avoid the same fiasco
9667 that dogs private keys: there are several incompatible private key
9668 formats some of which are standard and some OpenSSL specific and
9669 require various evil hacks to allow partial transparent handling and
9670 even then it doesn't work with DER formats. Given the option anything
9671 other than PKCS#8 should be dumped: but the other formats have to
9672 stay in the name of compatibility.
9673
9674 With public keys and the benefit of hindsight one standard format
9675 is used which works with EVP_PKEY, RSA or DSA structures: though
9676 it clearly returns an error if you try to read the wrong kind of key.
9677
9678 Added a -pubkey option to the 'x509' utility to output the public key.
9679 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
9680 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
9681 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
9682 that do the same as the EVP_PKEY_assign_*() except they up the
9683 reference count of the added key (they don't "swallow" the
9684 supplied key).
9685 [Steve Henson]
9686
9687 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
9688 CRLs would fail if the file contained no certificates or no CRLs:
9689 added a new function to read in both types and return the number
9690 read: this means that if none are read it will be an error. The
9691 DER versions of the certificate and CRL reader would always fail
9692 because it isn't possible to mix certificates and CRLs in DER format
9693 without choking one or the other routine. Changed this to just read
9694 a certificate: this is the best we can do. Also modified the code
9695 in apps/verify.c to take notice of return codes: it was previously
9696 attempting to read in certificates from NULL pointers and ignoring
9697 any errors: this is one reason why the cert and CRL reader seemed
9698 to work. It doesn't check return codes from the default certificate
9699 routines: these may well fail if the certificates aren't installed.
9700 [Steve Henson]
9701
9702 *) Code to support otherName option in GeneralName.
9703 [Steve Henson]
9704
9705 *) First update to verify code. Change the verify utility
9706 so it warns if it is passed a self signed certificate:
9707 for consistency with the normal behaviour. X509_verify
9708 has been modified to it will now verify a self signed
9709 certificate if *exactly* the same certificate appears
9710 in the store: it was previously impossible to trust a
9711 single self signed certificate. This means that:
9712 openssl verify ss.pem
9713 now gives a warning about a self signed certificate but
9714 openssl verify -CAfile ss.pem ss.pem
9715 is OK.
9716 [Steve Henson]
9717
9718 *) For servers, store verify_result in SSL_SESSION data structure
9719 (and add it to external session representation).
9720 This is needed when client certificate verifications fails,
9721 but an application-provided verification callback (set by
9722 SSL_CTX_set_cert_verify_callback) allows accepting the session
9723 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
9724 but returns 1): When the session is reused, we have to set
9725 ssl->verify_result to the appropriate error code to avoid
9726 security holes.
9727 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
9728
9729 *) Fix a bug in the new PKCS#7 code: it didn't consider the
9730 case in PKCS7_dataInit() where the signed PKCS7 structure
9731 didn't contain any existing data because it was being created.
9732 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
9733
9734 *) Add a salt to the key derivation routines in enc.c. This
9735 forms the first 8 bytes of the encrypted file. Also add a
9736 -S option to allow a salt to be input on the command line.
9737 [Steve Henson]
9738
9739 *) New function X509_cmp(). Oddly enough there wasn't a function
9740 to compare two certificates. We do this by working out the SHA1
9741 hash and comparing that. X509_cmp() will be needed by the trust
9742 code.
9743 [Steve Henson]
9744
9745 *) SSL_get1_session() is like SSL_get_session(), but increments
9746 the reference count in the SSL_SESSION returned.
9747 [Geoff Thorpe <geoff@eu.c2.net>]
9748
9749 *) Fix for 'req': it was adding a null to request attributes.
9750 Also change the X509_LOOKUP and X509_INFO code to handle
9751 certificate auxiliary information.
9752 [Steve Henson]
9753
9754 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
9755 the 'enc' command.
9756 [Steve Henson]
9757
9758 *) Add the possibility to add extra information to the memory leak
9759 detecting output, to form tracebacks, showing from where each
9760 allocation was originated: CRYPTO_push_info("constant string") adds
9761 the string plus current file name and line number to a per-thread
9762 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
9763 is like calling CYRPTO_pop_info() until the stack is empty.
9764 Also updated memory leak detection code to be multi-thread-safe.
9765 [Richard Levitte]
9766
9767 *) Add options -text and -noout to pkcs7 utility and delete the
9768 encryption options which never did anything. Update docs.
9769 [Steve Henson]
9770
9771 *) Add options to some of the utilities to allow the pass phrase
9772 to be included on either the command line (not recommended on
9773 OSes like Unix) or read from the environment. Update the
9774 manpages and fix a few bugs.
9775 [Steve Henson]
9776
9777 *) Add a few manpages for some of the openssl commands.
9778 [Steve Henson]
9779
9780 *) Fix the -revoke option in ca. It was freeing up memory twice,
9781 leaking and not finding already revoked certificates.
9782 [Steve Henson]
9783
9784 *) Extensive changes to support certificate auxiliary information.
9785 This involves the use of X509_CERT_AUX structure and X509_AUX
9786 functions. An X509_AUX function such as PEM_read_X509_AUX()
9787 can still read in a certificate file in the usual way but it
9788 will also read in any additional "auxiliary information". By
9789 doing things this way a fair degree of compatibility can be
9790 retained: existing certificates can have this information added
9791 using the new 'x509' options.
9792
9793 Current auxiliary information includes an "alias" and some trust
9794 settings. The trust settings will ultimately be used in enhanced
9795 certificate chain verification routines: currently a certificate
9796 can only be trusted if it is self signed and then it is trusted
9797 for all purposes.
9798 [Steve Henson]
9799
9800 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
9801 The problem was that one of the replacement routines had not been working
9802 since SSLeay releases. For now the offending routine has been replaced
9803 with non-optimised assembler. Even so, this now gives around 95%
9804 performance improvement for 1024 bit RSA signs.
9805 [Mark Cox]
9806
9807 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
9808 handling. Most clients have the effective key size in bits equal to
9809 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
9810 A few however don't do this and instead use the size of the decrypted key
9811 to determine the RC2 key length and the AlgorithmIdentifier to determine
9812 the effective key length. In this case the effective key length can still
9813 be 40 bits but the key length can be 168 bits for example. This is fixed
9814 by manually forcing an RC2 key into the EVP_PKEY structure because the
9815 EVP code can't currently handle unusual RC2 key sizes: it always assumes
9816 the key length and effective key length are equal.
9817 [Steve Henson]
9818
9819 *) Add a bunch of functions that should simplify the creation of
9820 X509_NAME structures. Now you should be able to do:
9821 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
9822 and have it automatically work out the correct field type and fill in
9823 the structures. The more adventurous can try:
9824 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
9825 and it will (hopefully) work out the correct multibyte encoding.
9826 [Steve Henson]
9827
9828 *) Change the 'req' utility to use the new field handling and multibyte
9829 copy routines. Before the DN field creation was handled in an ad hoc
9830 way in req, ca, and x509 which was rather broken and didn't support
9831 BMPStrings or UTF8Strings. Since some software doesn't implement
9832 BMPStrings or UTF8Strings yet, they can be enabled using the config file
9833 using the dirstring_type option. See the new comment in the default
9834 openssl.cnf for more info.
9835 [Steve Henson]
9836
9837 *) Make crypto/rand/md_rand.c more robust:
9838 - Assure unique random numbers after fork().
9839 - Make sure that concurrent threads access the global counter and
9840 md serializably so that we never lose entropy in them
9841 or use exactly the same state in multiple threads.
9842 Access to the large state is not always serializable because
9843 the additional locking could be a performance killer, and
9844 md should be large enough anyway.
9845 [Bodo Moeller]
9846
9847 *) New file apps/app_rand.c with commonly needed functionality
9848 for handling the random seed file.
9849
9850 Use the random seed file in some applications that previously did not:
9851 ca,
9852 dsaparam -genkey (which also ignored its '-rand' option),
9853 s_client,
9854 s_server,
9855 x509 (when signing).
9856 Except on systems with /dev/urandom, it is crucial to have a random
9857 seed file at least for key creation, DSA signing, and for DH exchanges;
9858 for RSA signatures we could do without one.
9859
9860 gendh and gendsa (unlike genrsa) used to read only the first byte
9861 of each file listed in the '-rand' option. The function as previously
9862 found in genrsa is now in app_rand.c and is used by all programs
9863 that support '-rand'.
9864 [Bodo Moeller]
9865
9866 *) In RAND_write_file, use mode 0600 for creating files;
9867 don't just chmod when it may be too late.
9868 [Bodo Moeller]
9869
9870 *) Report an error from X509_STORE_load_locations
9871 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
9872 [Bill Perry]
9873
9874 *) New function ASN1_mbstring_copy() this copies a string in either
9875 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
9876 into an ASN1_STRING type. A mask of permissible types is passed
9877 and it chooses the "minimal" type to use or an error if not type
9878 is suitable.
9879 [Steve Henson]
9880
9881 *) Add function equivalents to the various macros in asn1.h. The old
9882 macros are retained with an M_ prefix. Code inside the library can
9883 use the M_ macros. External code (including the openssl utility)
9884 should *NOT* in order to be "shared library friendly".
9885 [Steve Henson]
9886
9887 *) Add various functions that can check a certificate's extensions
9888 to see if it usable for various purposes such as SSL client,
9889 server or S/MIME and CAs of these types. This is currently
9890 VERY EXPERIMENTAL but will ultimately be used for certificate chain
9891 verification. Also added a -purpose flag to x509 utility to
9892 print out all the purposes.
9893 [Steve Henson]
9894
9895 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
9896 functions.
9897 [Steve Henson]
9898
9899 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
9900 for, obtain and decode and extension and obtain its critical flag.
9901 This allows all the necessary extension code to be handled in a
9902 single function call.
9903 [Steve Henson]
9904
9905 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
9906 platforms. See crypto/rc4/rc4_enc.c for further details.
9907 [Andy Polyakov]
9908
9909 *) New -noout option to asn1parse. This causes no output to be produced
9910 its main use is when combined with -strparse and -out to extract data
9911 from a file (which may not be in ASN.1 format).
9912 [Steve Henson]
9913
9914 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
9915 when producing the local key id.
9916 [Richard Levitte <levitte@stacken.kth.se>]
9917
9918 *) New option -dhparam in s_server. This allows a DH parameter file to be
9919 stated explicitly. If it is not stated then it tries the first server
9920 certificate file. The previous behaviour hard coded the filename
9921 "server.pem".
9922 [Steve Henson]
9923
9924 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
9925 a public key to be input or output. For example:
9926 openssl rsa -in key.pem -pubout -out pubkey.pem
9927 Also added necessary DSA public key functions to handle this.
9928 [Steve Henson]
9929
9930 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
9931 in the message. This was handled by allowing
9932 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
9933 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
9934
9935 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
9936 to the end of the strings whereas this didn't. This would cause problems
9937 if strings read with d2i_ASN1_bytes() were later modified.
9938 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
9939
9940 *) Fix for base64 decode bug. When a base64 bio reads only one line of
9941 data and it contains EOF it will end up returning an error. This is
9942 caused by input 46 bytes long. The cause is due to the way base64
9943 BIOs find the start of base64 encoded data. They do this by trying a
9944 trial decode on each line until they find one that works. When they
9945 do a flag is set and it starts again knowing it can pass all the
9946 data directly through the decoder. Unfortunately it doesn't reset
9947 the context it uses. This means that if EOF is reached an attempt
9948 is made to pass two EOFs through the context and this causes the
9949 resulting error. This can also cause other problems as well. As is
9950 usual with these problems it takes *ages* to find and the fix is
9951 trivial: move one line.
9952 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
9953
9954 *) Ugly workaround to get s_client and s_server working under Windows. The
9955 old code wouldn't work because it needed to select() on sockets and the
9956 tty (for keypresses and to see if data could be written). Win32 only
9957 supports select() on sockets so we select() with a 1s timeout on the
9958 sockets and then see if any characters are waiting to be read, if none
9959 are present then we retry, we also assume we can always write data to
9960 the tty. This isn't nice because the code then blocks until we've
9961 received a complete line of data and it is effectively polling the
9962 keyboard at 1s intervals: however it's quite a bit better than not
9963 working at all :-) A dedicated Windows application might handle this
9964 with an event loop for example.
9965 [Steve Henson]
9966
9967 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
9968 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
9969 will be called when RSA_sign() and RSA_verify() are used. This is useful
9970 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
9971 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
9972 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
9973 This necessitated the support of an extra signature type NID_md5_sha1
9974 for SSL signatures and modifications to the SSL library to use it instead
9975 of calling RSA_public_decrypt() and RSA_private_encrypt().
9976 [Steve Henson]
9977
9978 *) Add new -verify -CAfile and -CApath options to the crl program, these
9979 will lookup a CRL issuers certificate and verify the signature in a
9980 similar way to the verify program. Tidy up the crl program so it
9981 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
9982 less strict. It will now permit CRL extensions even if it is not
9983 a V2 CRL: this will allow it to tolerate some broken CRLs.
9984 [Steve Henson]
9985
9986 *) Initialize all non-automatic variables each time one of the openssl
9987 sub-programs is started (this is necessary as they may be started
9988 multiple times from the "OpenSSL>" prompt).
9989 [Lennart Bang, Bodo Moeller]
9990
9991 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
9992 removing all other RSA functionality (this is what NO_RSA does). This
9993 is so (for example) those in the US can disable those operations covered
9994 by the RSA patent while allowing storage and parsing of RSA keys and RSA
9995 key generation.
9996 [Steve Henson]
9997
9998 *) Non-copying interface to BIO pairs.
9999 (still largely untested)
10000 [Bodo Moeller]
10001
10002 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10003 ASCII string. This was handled independently in various places before.
10004 [Steve Henson]
10005
10006 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10007 UTF8 strings a character at a time.
10008 [Steve Henson]
10009
10010 *) Use client_version from client hello to select the protocol
10011 (s23_srvr.c) and for RSA client key exchange verification
10012 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10013 [Bodo Moeller]
10014
10015 *) Add various utility functions to handle SPKACs, these were previously
10016 handled by poking round in the structure internals. Added new function
10017 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10018 print, verify and generate SPKACs. Based on an original idea from
10019 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10020 [Steve Henson]
10021
10022 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10023 [Andy Polyakov]
10024
10025 *) Allow the config file extension section to be overwritten on the
10026 command line. Based on an original idea from Massimiliano Pala
10027 <madwolf@comune.modena.it>. The new option is called -extensions
10028 and can be applied to ca, req and x509. Also -reqexts to override
10029 the request extensions in req and -crlexts to override the crl extensions
10030 in ca.
10031 [Steve Henson]
10032
10033 *) Add new feature to the SPKAC handling in ca. Now you can include
10034 the same field multiple times by preceding it by "XXXX." for example:
10035 1.OU="Unit name 1"
10036 2.OU="Unit name 2"
10037 this is the same syntax as used in the req config file.
10038 [Steve Henson]
10039
10040 *) Allow certificate extensions to be added to certificate requests. These
10041 are specified in a 'req_extensions' option of the req section of the
10042 config file. They can be printed out with the -text option to req but
10043 are otherwise ignored at present.
10044 [Steve Henson]
10045
10046 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10047 data read consists of only the final block it would not decrypted because
10048 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10049 A misplaced 'break' also meant the decrypted final block might not be
10050 copied until the next read.
10051 [Steve Henson]
10052
10053 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10054 a few extra parameters to the DH structure: these will be useful if
10055 for example we want the value of 'q' or implement X9.42 DH.
10056 [Steve Henson]
10057
10058 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10059 provides hooks that allow the default DSA functions or functions on a
10060 "per key" basis to be replaced. This allows hardware acceleration and
10061 hardware key storage to be handled without major modification to the
10062 library. Also added low level modexp hooks and CRYPTO_EX structure and
10063 associated functions.
10064 [Steve Henson]
10065
10066 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10067 as "read only": it can't be written to and the buffer it points to will
10068 not be freed. Reading from a read only BIO is much more efficient than
10069 a normal memory BIO. This was added because there are several times when
10070 an area of memory needs to be read from a BIO. The previous method was
10071 to create a memory BIO and write the data to it, this results in two
10072 copies of the data and an O(n^2) reading algorithm. There is a new
10073 function BIO_new_mem_buf() which creates a read only memory BIO from
10074 an area of memory. Also modified the PKCS#7 routines to use read only
10075 memory BIOs.
10076 [Steve Henson]
10077
10078 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10079 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10080 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10081 but a retry condition occured while trying to read the rest.
10082 [Bodo Moeller]
10083
10084 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10085 NID_pkcs7_encrypted by default: this was wrong since this should almost
10086 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10087 the encrypted data type: this is a more sensible place to put it and it
10088 allows the PKCS#12 code to be tidied up that duplicated this
10089 functionality.
10090 [Steve Henson]
10091
10092 *) Changed obj_dat.pl script so it takes its input and output files on
10093 the command line. This should avoid shell escape redirection problems
10094 under Win32.
10095 [Steve Henson]
10096
10097 *) Initial support for certificate extension requests, these are included
10098 in things like Xenroll certificate requests. Included functions to allow
10099 extensions to be obtained and added.
10100 [Steve Henson]
10101
10102 *) -crlf option to s_client and s_server for sending newlines as
10103 CRLF (as required by many protocols).
10104 [Bodo Moeller]
10105
10106 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10107
10108 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10109 [Ralf S. Engelschall]
10110
10111 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10112 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10113
10114 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10115 program.
10116 [Steve Henson]
10117
10118 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10119 DH parameters/keys (q is lost during that conversion, but the resulting
10120 DH parameters contain its length).
10121
10122 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10123 much faster than DH_generate_parameters (which creates parameters
10124 where p = 2*q + 1), and also the smaller q makes DH computations
10125 much more efficient (160-bit exponentiation instead of 1024-bit
10126 exponentiation); so this provides a convenient way to support DHE
10127 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10128 utter importance to use
10129 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10130 or
10131 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10132 when such DH parameters are used, because otherwise small subgroup
10133 attacks may become possible!
10134 [Bodo Moeller]
10135
10136 *) Avoid memory leak in i2d_DHparams.
10137 [Bodo Moeller]
10138
10139 *) Allow the -k option to be used more than once in the enc program:
10140 this allows the same encrypted message to be read by multiple recipients.
10141 [Steve Henson]
10142
10143 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
10144 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
10145 it will always use the numerical form of the OID, even if it has a short
10146 or long name.
10147 [Steve Henson]
10148
10149 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
10150 method only got called if p,q,dmp1,dmq1,iqmp components were present,
10151 otherwise bn_mod_exp was called. In the case of hardware keys for example
10152 no private key components need be present and it might store extra data
10153 in the RSA structure, which cannot be accessed from bn_mod_exp.
10154 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
10155 private key operations.
10156 [Steve Henson]
10157
10158 *) Added support for SPARC Linux.
10159 [Andy Polyakov]
10160
10161 *) pem_password_cb function type incompatibly changed from
10162 typedef int pem_password_cb(char *buf, int size, int rwflag);
10163 to
10164 ....(char *buf, int size, int rwflag, void *userdata);
10165 so that applications can pass data to their callbacks:
10166 The PEM[_ASN1]_{read,write}... functions and macros now take an
10167 additional void * argument, which is just handed through whenever
10168 the password callback is called.
10169 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
10170
10171 New function SSL_CTX_set_default_passwd_cb_userdata.
10172
10173 Compatibility note: As many C implementations push function arguments
10174 onto the stack in reverse order, the new library version is likely to
10175 interoperate with programs that have been compiled with the old
10176 pem_password_cb definition (PEM_whatever takes some data that
10177 happens to be on the stack as its last argument, and the callback
10178 just ignores this garbage); but there is no guarantee whatsoever that
10179 this will work.
10180
10181 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
10182 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
10183 problems not only on Windows, but also on some Unix platforms.
10184 To avoid problematic command lines, these definitions are now in an
10185 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
10186 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
10187 [Bodo Moeller]
10188
10189 *) MIPS III/IV assembler module is reimplemented.
10190 [Andy Polyakov]
10191
10192 *) More DES library cleanups: remove references to srand/rand and
10193 delete an unused file.
10194 [Ulf Möller]
10195
10196 *) Add support for the the free Netwide assembler (NASM) under Win32,
10197 since not many people have MASM (ml) and it can be hard to obtain.
10198 This is currently experimental but it seems to work OK and pass all
10199 the tests. Check out INSTALL.W32 for info.
10200 [Steve Henson]
10201
10202 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
10203 without temporary keys kept an extra copy of the server key,
10204 and connections with temporary keys did not free everything in case
10205 of an error.
10206 [Bodo Moeller]
10207
10208 *) New function RSA_check_key and new openssl rsa option -check
10209 for verifying the consistency of RSA keys.
10210 [Ulf Moeller, Bodo Moeller]
10211
10212 *) Various changes to make Win32 compile work:
10213 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
10214 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
10215 comparison" warnings.
10216 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
10217 [Steve Henson]
10218
10219 *) Add a debugging option to PKCS#5 v2 key generation function: when
10220 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
10221 derived keys are printed to stderr.
10222 [Steve Henson]
10223
10224 *) Copy the flags in ASN1_STRING_dup().
10225 [Roman E. Pavlov <pre@mo.msk.ru>]
10226
10227 *) The x509 application mishandled signing requests containing DSA
10228 keys when the signing key was also DSA and the parameters didn't match.
10229
10230 It was supposed to omit the parameters when they matched the signing key:
10231 the verifying software was then supposed to automatically use the CA's
10232 parameters if they were absent from the end user certificate.
10233
10234 Omitting parameters is no longer recommended. The test was also
10235 the wrong way round! This was probably due to unusual behaviour in
10236 EVP_cmp_parameters() which returns 1 if the parameters match.
10237 This meant that parameters were omitted when they *didn't* match and
10238 the certificate was useless. Certificates signed with 'ca' didn't have
10239 this bug.
10240 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
10241
10242 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
10243 The interface is as follows:
10244 Applications can use
10245 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
10246 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
10247 "off" is now the default.
10248 The library internally uses
10249 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
10250 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
10251 to disable memory-checking temporarily.
10252
10253 Some inconsistent states that previously were possible (and were
10254 even the default) are now avoided.
10255
10256 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
10257 with each memory chunk allocated; this is occasionally more helpful
10258 than just having a counter.
10259
10260 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
10261
10262 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
10263 extensions.
10264 [Bodo Moeller]
10265
10266 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
10267 which largely parallels "options", but is for changing API behaviour,
10268 whereas "options" are about protocol behaviour.
10269 Initial "mode" flags are:
10270
10271 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
10272 a single record has been written.
10273 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
10274 retries use the same buffer location.
10275 (But all of the contents must be
10276 copied!)
10277 [Bodo Moeller]
10278
10279 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
10280 worked.
10281
10282 *) Fix problems with no-hmac etc.
10283 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
10284
10285 *) New functions RSA_get_default_method(), RSA_set_method() and
10286 RSA_get_method(). These allows replacement of RSA_METHODs without having
10287 to mess around with the internals of an RSA structure.
10288 [Steve Henson]
10289
10290 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
10291 Also really enable memory leak checks in openssl.c and in some
10292 test programs.
10293 [Chad C. Mulligan, Bodo Moeller]
10294
10295 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
10296 up the length of negative integers. This has now been simplified to just
10297 store the length when it is first determined and use it later, rather
10298 than trying to keep track of where data is copied and updating it to
10299 point to the end.
10300 [Steve Henson, reported by Brien Wheeler
10301 <bwheeler@authentica-security.com>]
10302
10303 *) Add a new function PKCS7_signatureVerify. This allows the verification
10304 of a PKCS#7 signature but with the signing certificate passed to the
10305 function itself. This contrasts with PKCS7_dataVerify which assumes the
10306 certificate is present in the PKCS#7 structure. This isn't always the
10307 case: certificates can be omitted from a PKCS#7 structure and be
10308 distributed by "out of band" means (such as a certificate database).
10309 [Steve Henson]
10310
10311 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
10312 function prototypes in pem.h, also change util/mkdef.pl to add the
10313 necessary function names.
10314 [Steve Henson]
10315
10316 *) mk1mf.pl (used by Windows builds) did not properly read the
10317 options set by Configure in the top level Makefile, and Configure
10318 was not even able to write more than one option correctly.
10319 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
10320 [Bodo Moeller]
10321
10322 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
10323 file to be loaded from a BIO or FILE pointer. The BIO version will
10324 for example allow memory BIOs to contain config info.
10325 [Steve Henson]
10326
10327 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
10328 Whoever hopes to achieve shared-library compatibility across versions
10329 must use this, not the compile-time macro.
10330 (Exercise 0.9.4: Which is the minimum library version required by
10331 such programs?)
10332 Note: All this applies only to multi-threaded programs, others don't
10333 need locks.
10334 [Bodo Moeller]
10335
10336 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
10337 through a BIO pair triggered the default case, i.e.
10338 SSLerr(...,SSL_R_UNKNOWN_STATE).
10339 [Bodo Moeller]
10340
10341 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
10342 can use the SSL library even if none of the specific BIOs is
10343 appropriate.
10344 [Bodo Moeller]
10345
10346 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
10347 for the encoded length.
10348 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
10349
10350 *) Add initial documentation of the X509V3 functions.
10351 [Steve Henson]
10352
10353 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
10354 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
10355 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
10356 secure PKCS#8 private key format with a high iteration count.
10357 [Steve Henson]
10358
10359 *) Fix determination of Perl interpreter: A perl or perl5
10360 _directory_ in $PATH was also accepted as the interpreter.
10361 [Ralf S. Engelschall]
10362
10363 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
10364 wrong with it but it was very old and did things like calling
10365 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
10366 unusual formatting.
10367 [Steve Henson]
10368
10369 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
10370 to use the new extension code.
10371 [Steve Henson]
10372
10373 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
10374 with macros. This should make it easier to change their form, add extra
10375 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
10376 constant.
10377 [Steve Henson]
10378
10379 *) Add to configuration table a new entry that can specify an alternative
10380 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
10381 according to Mark Crispin <MRC@Panda.COM>.
10382 [Bodo Moeller]
10383
10384 #if 0
10385 *) DES CBC did not update the IV. Weird.
10386 [Ben Laurie]
10387 #else
10388 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
10389 Changing the behaviour of the former might break existing programs --
10390 where IV updating is needed, des_ncbc_encrypt can be used.
10391 #endif
10392
10393 *) When bntest is run from "make test" it drives bc to check its
10394 calculations, as well as internally checking them. If an internal check
10395 fails, it needs to cause bc to give a non-zero result or make test carries
10396 on without noticing the failure. Fixed.
10397 [Ben Laurie]
10398
10399 *) DES library cleanups.
10400 [Ulf Möller]
10401
10402 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
10403 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
10404 ciphers. NOTE: although the key derivation function has been verified
10405 against some published test vectors it has not been extensively tested
10406 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
10407 of v2.0.
10408 [Steve Henson]
10409
10410 *) Instead of "mkdir -p", which is not fully portable, use new
10411 Perl script "util/mkdir-p.pl".
10412 [Bodo Moeller]
10413
10414 *) Rewrite the way password based encryption (PBE) is handled. It used to
10415 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
10416 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
10417 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
10418 the 'parameter' field of the AlgorithmIdentifier is passed to the
10419 underlying key generation function so it must do its own ASN1 parsing.
10420 This has also changed the EVP_PBE_CipherInit() function which now has a
10421 'parameter' argument instead of literal salt and iteration count values
10422 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
10423 [Steve Henson]
10424
10425 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
10426 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
10427 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
10428 KEY" because this clashed with PKCS#8 unencrypted string. Since this
10429 value was just used as a "magic string" and not used directly its
10430 value doesn't matter.
10431 [Steve Henson]
10432
10433 *) Introduce some semblance of const correctness to BN. Shame C doesn't
10434 support mutable.
10435 [Ben Laurie]
10436
10437 *) "linux-sparc64" configuration (ultrapenguin).
10438 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
10439 "linux-sparc" configuration.
10440 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
10441
10442 *) config now generates no-xxx options for missing ciphers.
10443 [Ulf Möller]
10444
10445 *) Support the EBCDIC character set (work in progress).
10446 File ebcdic.c not yet included because it has a different license.
10447 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10448
10449 *) Support BS2000/OSD-POSIX.
10450 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
10451
10452 *) Make callbacks for key generation use void * instead of char *.
10453 [Ben Laurie]
10454
10455 *) Make S/MIME samples compile (not yet tested).
10456 [Ben Laurie]
10457
10458 *) Additional typesafe stacks.
10459 [Ben Laurie]
10460
10461 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
10462 [Bodo Moeller]
10463
10464
10465 Changes between 0.9.3 and 0.9.3a [29 May 1999]
10466
10467 *) New configuration variant "sco5-gcc".
10468
10469 *) Updated some demos.
10470 [Sean O Riordain, Wade Scholine]
10471
10472 *) Add missing BIO_free at exit of pkcs12 application.
10473 [Wu Zhigang]
10474
10475 *) Fix memory leak in conf.c.
10476 [Steve Henson]
10477
10478 *) Updates for Win32 to assembler version of MD5.
10479 [Steve Henson]
10480
10481 *) Set #! path to perl in apps/der_chop to where we found it
10482 instead of using a fixed path.
10483 [Bodo Moeller]
10484
10485 *) SHA library changes for irix64-mips4-cc.
10486 [Andy Polyakov]
10487
10488 *) Improvements for VMS support.
10489 [Richard Levitte]
10490
10491
10492 Changes between 0.9.2b and 0.9.3 [24 May 1999]
10493
10494 *) Bignum library bug fix. IRIX 6 passes "make test" now!
10495 This also avoids the problems with SC4.2 and unpatched SC5.
10496 [Andy Polyakov <appro@fy.chalmers.se>]
10497
10498 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
10499 These are required because of the typesafe stack would otherwise break
10500 existing code. If old code used a structure member which used to be STACK
10501 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
10502 sk_num or sk_value it would produce an error because the num, data members
10503 are not present in STACK_OF. Now it just produces a warning. sk_set
10504 replaces the old method of assigning a value to sk_value
10505 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
10506 that does this will no longer work (and should use sk_set instead) but
10507 this could be regarded as a "questionable" behaviour anyway.
10508 [Steve Henson]
10509
10510 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
10511 correctly handle encrypted S/MIME data.
10512 [Steve Henson]
10513
10514 *) Change type of various DES function arguments from des_cblock
10515 (which means, in function argument declarations, pointer to char)
10516 to des_cblock * (meaning pointer to array with 8 char elements),
10517 which allows the compiler to do more typechecking; it was like
10518 that back in SSLeay, but with lots of ugly casts.
10519
10520 Introduce new type const_des_cblock.
10521 [Bodo Moeller]
10522
10523 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
10524 problems: find RecipientInfo structure that matches recipient certificate
10525 and initialise the ASN1 structures properly based on passed cipher.
10526 [Steve Henson]
10527
10528 *) Belatedly make the BN tests actually check the results.
10529 [Ben Laurie]
10530
10531 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
10532 to and from BNs: it was completely broken. New compilation option
10533 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
10534 key elements as negative integers.
10535 [Steve Henson]
10536
10537 *) Reorganize and speed up MD5.
10538 [Andy Polyakov <appro@fy.chalmers.se>]
10539
10540 *) VMS support.
10541 [Richard Levitte <richard@levitte.org>]
10542
10543 *) New option -out to asn1parse to allow the parsed structure to be
10544 output to a file. This is most useful when combined with the -strparse
10545 option to examine the output of things like OCTET STRINGS.
10546 [Steve Henson]
10547
10548 *) Make SSL library a little more fool-proof by not requiring any longer
10549 that SSL_set_{accept,connect}_state be called before
10550 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
10551 in many applications because usually everything *appeared* to work as
10552 intended anyway -- now it really works as intended).
10553 [Bodo Moeller]
10554
10555 *) Move openssl.cnf out of lib/.
10556 [Ulf Möller]
10557
10558 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
10559 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
10560 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
10561 [Ralf S. Engelschall]
10562
10563 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
10564 handle PKCS#7 enveloped data properly.
10565 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
10566
10567 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
10568 copying pointers. The cert_st handling is changed by this in
10569 various ways (and thus what used to be known as ctx->default_cert
10570 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
10571 any longer when s->cert does not give us what we need).
10572 ssl_cert_instantiate becomes obsolete by this change.
10573 As soon as we've got the new code right (possibly it already is?),
10574 we have solved a couple of bugs of the earlier code where s->cert
10575 was used as if it could not have been shared with other SSL structures.
10576
10577 Note that using the SSL API in certain dirty ways now will result
10578 in different behaviour than observed with earlier library versions:
10579 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
10580 does not influence s as it used to.
10581
10582 In order to clean up things more thoroughly, inside SSL_SESSION
10583 we don't use CERT any longer, but a new structure SESS_CERT
10584 that holds per-session data (if available); currently, this is
10585 the peer's certificate chain and, for clients, the server's certificate
10586 and temporary key. CERT holds only those values that can have
10587 meaningful defaults in an SSL_CTX.
10588 [Bodo Moeller]
10589
10590 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
10591 from the internal representation. Various PKCS#7 fixes: remove some
10592 evil casts and set the enc_dig_alg field properly based on the signing
10593 key type.
10594 [Steve Henson]
10595
10596 *) Allow PKCS#12 password to be set from the command line or the
10597 environment. Let 'ca' get its config file name from the environment
10598 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
10599 and 'x509').
10600 [Steve Henson]
10601
10602 *) Allow certificate policies extension to use an IA5STRING for the
10603 organization field. This is contrary to the PKIX definition but
10604 VeriSign uses it and IE5 only recognises this form. Document 'x509'
10605 extension option.
10606 [Steve Henson]
10607
10608 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
10609 without disallowing inline assembler and the like for non-pedantic builds.
10610 [Ben Laurie]
10611
10612 *) Support Borland C++ builder.
10613 [Janez Jere <jj@void.si>, modified by Ulf Möller]
10614
10615 *) Support Mingw32.
10616 [Ulf Möller]
10617
10618 *) SHA-1 cleanups and performance enhancements.
10619 [Andy Polyakov <appro@fy.chalmers.se>]
10620
10621 *) Sparc v8plus assembler for the bignum library.
10622 [Andy Polyakov <appro@fy.chalmers.se>]
10623
10624 *) Accept any -xxx and +xxx compiler options in Configure.
10625 [Ulf Möller]
10626
10627 *) Update HPUX configuration.
10628 [Anonymous]
10629
10630 *) Add missing sk_<type>_unshift() function to safestack.h
10631 [Ralf S. Engelschall]
10632
10633 *) New function SSL_CTX_use_certificate_chain_file that sets the
10634 "extra_cert"s in addition to the certificate. (This makes sense
10635 only for "PEM" format files, as chains as a whole are not
10636 DER-encoded.)
10637 [Bodo Moeller]
10638
10639 *) Support verify_depth from the SSL API.
10640 x509_vfy.c had what can be considered an off-by-one-error:
10641 Its depth (which was not part of the external interface)
10642 was actually counting the number of certificates in a chain;
10643 now it really counts the depth.
10644 [Bodo Moeller]
10645
10646 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
10647 instead of X509err, which often resulted in confusing error
10648 messages since the error codes are not globally unique
10649 (e.g. an alleged error in ssl3_accept when a certificate
10650 didn't match the private key).
10651
10652 *) New function SSL_CTX_set_session_id_context that allows to set a default
10653 value (so that you don't need SSL_set_session_id_context for each
10654 connection using the SSL_CTX).
10655 [Bodo Moeller]
10656
10657 *) OAEP decoding bug fix.
10658 [Ulf Möller]
10659
10660 *) Support INSTALL_PREFIX for package builders, as proposed by
10661 David Harris.
10662 [Bodo Moeller]
10663
10664 *) New Configure options "threads" and "no-threads". For systems
10665 where the proper compiler options are known (currently Solaris
10666 and Linux), "threads" is the default.
10667 [Bodo Moeller]
10668
10669 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
10670 [Bodo Moeller]
10671
10672 *) Install various scripts to $(OPENSSLDIR)/misc, not to
10673 $(INSTALLTOP)/bin -- they shouldn't clutter directories
10674 such as /usr/local/bin.
10675 [Bodo Moeller]
10676
10677 *) "make linux-shared" to build shared libraries.
10678 [Niels Poppe <niels@netbox.org>]
10679
10680 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
10681 [Ulf Möller]
10682
10683 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
10684 extension adding in x509 utility.
10685 [Steve Henson]
10686
10687 *) Remove NOPROTO sections and error code comments.
10688 [Ulf Möller]
10689
10690 *) Partial rewrite of the DEF file generator to now parse the ANSI
10691 prototypes.
10692 [Steve Henson]
10693
10694 *) New Configure options --prefix=DIR and --openssldir=DIR.
10695 [Ulf Möller]
10696
10697 *) Complete rewrite of the error code script(s). It is all now handled
10698 by one script at the top level which handles error code gathering,
10699 header rewriting and C source file generation. It should be much better
10700 than the old method: it now uses a modified version of Ulf's parser to
10701 read the ANSI prototypes in all header files (thus the old K&R definitions
10702 aren't needed for error creation any more) and do a better job of
10703 translating function codes into names. The old 'ASN1 error code imbedded
10704 in a comment' is no longer necessary and it doesn't use .err files which
10705 have now been deleted. Also the error code call doesn't have to appear all
10706 on one line (which resulted in some large lines...).
10707 [Steve Henson]
10708
10709 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
10710 [Bodo Moeller]
10711
10712 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
10713 0 (which usually indicates a closed connection), but continue reading.
10714 [Bodo Moeller]
10715
10716 *) Fix some race conditions.
10717 [Bodo Moeller]
10718
10719 *) Add support for CRL distribution points extension. Add Certificate
10720 Policies and CRL distribution points documentation.
10721 [Steve Henson]
10722
10723 *) Move the autogenerated header file parts to crypto/opensslconf.h.
10724 [Ulf Möller]
10725
10726 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
10727 8 of keying material. Merlin has also confirmed interop with this fix
10728 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
10729 [Merlin Hughes <merlin@baltimore.ie>]
10730
10731 *) Fix lots of warnings.
10732 [Richard Levitte <levitte@stacken.kth.se>]
10733
10734 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
10735 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
10736 [Richard Levitte <levitte@stacken.kth.se>]
10737
10738 *) Fix problems with sizeof(long) == 8.
10739 [Andy Polyakov <appro@fy.chalmers.se>]
10740
10741 *) Change functions to ANSI C.
10742 [Ulf Möller]
10743
10744 *) Fix typos in error codes.
10745 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
10746
10747 *) Remove defunct assembler files from Configure.
10748 [Ulf Möller]
10749
10750 *) SPARC v8 assembler BIGNUM implementation.
10751 [Andy Polyakov <appro@fy.chalmers.se>]
10752
10753 *) Support for Certificate Policies extension: both print and set.
10754 Various additions to support the r2i method this uses.
10755 [Steve Henson]
10756
10757 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
10758 return a const string when you are expecting an allocated buffer.
10759 [Ben Laurie]
10760
10761 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
10762 types DirectoryString and DisplayText.
10763 [Steve Henson]
10764
10765 *) Add code to allow r2i extensions to access the configuration database,
10766 add an LHASH database driver and add several ctx helper functions.
10767 [Steve Henson]
10768
10769 *) Fix an evil bug in bn_expand2() which caused various BN functions to
10770 fail when they extended the size of a BIGNUM.
10771 [Steve Henson]
10772
10773 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
10774 support typesafe stack.
10775 [Steve Henson]
10776
10777 *) Fix typo in SSL_[gs]et_options().
10778 [Nils Frostberg <nils@medcom.se>]
10779
10780 *) Delete various functions and files that belonged to the (now obsolete)
10781 old X509V3 handling code.
10782 [Steve Henson]
10783
10784 *) New Configure option "rsaref".
10785 [Ulf Möller]
10786
10787 *) Don't auto-generate pem.h.
10788 [Bodo Moeller]
10789
10790 *) Introduce type-safe ASN.1 SETs.
10791 [Ben Laurie]
10792
10793 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
10794 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
10795
10796 *) Introduce type-safe STACKs. This will almost certainly break lots of code
10797 that links with OpenSSL (well at least cause lots of warnings), but fear
10798 not: the conversion is trivial, and it eliminates loads of evil casts. A
10799 few STACKed things have been converted already. Feel free to convert more.
10800 In the fullness of time, I'll do away with the STACK type altogether.
10801 [Ben Laurie]
10802
10803 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
10804 specified in <certfile> by updating the entry in the index.txt file.
10805 This way one no longer has to edit the index.txt file manually for
10806 revoking a certificate. The -revoke option does the gory details now.
10807 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
10808
10809 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
10810 `-text' option at all and this way the `-noout -text' combination was
10811 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
10812 [Ralf S. Engelschall]
10813
10814 *) Make sure a corresponding plain text error message exists for the
10815 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
10816 verify callback function determined that a certificate was revoked.
10817 [Ralf S. Engelschall]
10818
10819 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
10820 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
10821 all available cipers including rc5, which was forgotten until now.
10822 In order to let the testing shell script know which algorithms
10823 are available, a new (up to now undocumented) command
10824 "openssl list-cipher-commands" is used.
10825 [Bodo Moeller]
10826
10827 *) Bugfix: s_client occasionally would sleep in select() when
10828 it should have checked SSL_pending() first.
10829 [Bodo Moeller]
10830
10831 *) New functions DSA_do_sign and DSA_do_verify to provide access to
10832 the raw DSA values prior to ASN.1 encoding.
10833 [Ulf Möller]
10834
10835 *) Tweaks to Configure
10836 [Niels Poppe <niels@netbox.org>]
10837
10838 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
10839 yet...
10840 [Steve Henson]
10841
10842 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
10843 [Ulf Möller]
10844
10845 *) New config option to avoid instructions that are illegal on the 80386.
10846 The default code is faster, but requires at least a 486.
10847 [Ulf Möller]
10848
10849 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
10850 SSL2_SERVER_VERSION (not used at all) macros, which are now the
10851 same as SSL2_VERSION anyway.
10852 [Bodo Moeller]
10853
10854 *) New "-showcerts" option for s_client.
10855 [Bodo Moeller]
10856
10857 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
10858 application. Various cleanups and fixes.
10859 [Steve Henson]
10860
10861 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
10862 modify error routines to work internally. Add error codes and PBE init
10863 to library startup routines.
10864 [Steve Henson]
10865
10866 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
10867 packing functions to asn1 and evp. Changed function names and error
10868 codes along the way.
10869 [Steve Henson]
10870
10871 *) PKCS12 integration: and so it begins... First of several patches to
10872 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
10873 objects to objects.h
10874 [Steve Henson]
10875
10876 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
10877 and display support for Thawte strong extranet extension.
10878 [Steve Henson]
10879
10880 *) Add LinuxPPC support.
10881 [Jeff Dubrule <igor@pobox.org>]
10882
10883 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
10884 bn_div_words in alpha.s.
10885 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
10886
10887 *) Make sure the RSA OAEP test is skipped under -DRSAref because
10888 OAEP isn't supported when OpenSSL is built with RSAref.
10889 [Ulf Moeller <ulf@fitug.de>]
10890
10891 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
10892 so they no longer are missing under -DNOPROTO.
10893 [Soren S. Jorvang <soren@t.dk>]
10894
10895
10896 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
10897
10898 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
10899 doesn't work when the session is reused. Coming soon!
10900 [Ben Laurie]
10901
10902 *) Fix a security hole, that allows sessions to be reused in the wrong
10903 context thus bypassing client cert protection! All software that uses
10904 client certs and session caches in multiple contexts NEEDS PATCHING to
10905 allow session reuse! A fuller solution is in the works.
10906 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
10907
10908 *) Some more source tree cleanups (removed obsolete files
10909 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
10910 permission on "config" script to be executable) and a fix for the INSTALL
10911 document.
10912 [Ulf Moeller <ulf@fitug.de>]
10913
10914 *) Remove some legacy and erroneous uses of malloc, free instead of
10915 Malloc, Free.
10916 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
10917
10918 *) Make rsa_oaep_test return non-zero on error.
10919 [Ulf Moeller <ulf@fitug.de>]
10920
10921 *) Add support for native Solaris shared libraries. Configure
10922 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
10923 if someone would make that last step automatic.
10924 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
10925
10926 *) ctx_size was not built with the right compiler during "make links". Fixed.
10927 [Ben Laurie]
10928
10929 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
10930 except NULL ciphers". This means the default cipher list will no longer
10931 enable NULL ciphers. They need to be specifically enabled e.g. with
10932 the string "DEFAULT:eNULL".
10933 [Steve Henson]
10934
10935 *) Fix to RSA private encryption routines: if p < q then it would
10936 occasionally produce an invalid result. This will only happen with
10937 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
10938 [Steve Henson]
10939
10940 *) Be less restrictive and allow also `perl util/perlpath.pl
10941 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
10942 because this way one can also use an interpreter named `perl5' (which is
10943 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
10944 installed as `perl').
10945 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10946
10947 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
10948 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
10949
10950 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
10951 advapi32.lib to Win32 build and change the pem test comparision
10952 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
10953 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
10954 and crypto/des/ede_cbcm_enc.c.
10955 [Steve Henson]
10956
10957 *) DES quad checksum was broken on big-endian architectures. Fixed.
10958 [Ben Laurie]
10959
10960 *) Comment out two functions in bio.h that aren't implemented. Fix up the
10961 Win32 test batch file so it (might) work again. The Win32 test batch file
10962 is horrible: I feel ill....
10963 [Steve Henson]
10964
10965 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
10966 in e_os.h. Audit of header files to check ANSI and non ANSI
10967 sections: 10 functions were absent from non ANSI section and not exported
10968 from Windows DLLs. Fixed up libeay.num for new functions.
10969 [Steve Henson]
10970
10971 *) Make `openssl version' output lines consistent.
10972 [Ralf S. Engelschall]
10973
10974 *) Fix Win32 symbol export lists for BIO functions: Added
10975 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
10976 to ms/libeay{16,32}.def.
10977 [Ralf S. Engelschall]
10978
10979 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
10980 fine under Unix and passes some trivial tests I've now added. But the
10981 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
10982 added to make sure no one expects that this stuff really works in the
10983 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
10984 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
10985 openssl_bio.xs.
10986 [Ralf S. Engelschall]
10987
10988 *) Fix the generation of two part addresses in perl.
10989 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
10990
10991 *) Add config entry for Linux on MIPS.
10992 [John Tobey <jtobey@channel1.com>]
10993
10994 *) Make links whenever Configure is run, unless we are on Windoze.
10995 [Ben Laurie]
10996
10997 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
10998 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
10999 in CRLs.
11000 [Steve Henson]
11001
11002 *) Add a useful kludge to allow package maintainers to specify compiler and
11003 other platforms details on the command line without having to patch the
11004 Configure script everytime: One now can use ``perl Configure
11005 <id>:<details>'', i.e. platform ids are allowed to have details appended
11006 to them (seperated by colons). This is treated as there would be a static
11007 pre-configured entry in Configure's %table under key <id> with value
11008 <details> and ``perl Configure <id>'' is called. So, when you want to
11009 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11010 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11011 now, which overrides the FreeBSD-elf entry on-the-fly.
11012 [Ralf S. Engelschall]
11013
11014 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11015 [Ben Laurie]
11016
11017 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11018 on the `perl Configure ...' command line. This way one can compile
11019 OpenSSL libraries with Position Independent Code (PIC) which is needed
11020 for linking it into DSOs.
11021 [Ralf S. Engelschall]
11022
11023 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11024 Fixed.
11025 [Ben Laurie]
11026
11027 *) Cleaned up the LICENSE document: The official contact for any license
11028 questions now is the OpenSSL core team under openssl-core@openssl.org.
11029 And add a paragraph about the dual-license situation to make sure people
11030 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11031 to the OpenSSL toolkit.
11032 [Ralf S. Engelschall]
11033
11034 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11035 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11036 Additonally cleaned up the `make links' target: Remove unnecessary
11037 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11038 to speed processing and no longer clutter the display with confusing
11039 stuff. Instead only the actually done links are displayed.
11040 [Ralf S. Engelschall]
11041
11042 *) Permit null encryption ciphersuites, used for authentication only. It used
11043 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11044 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11045 encryption.
11046 [Ben Laurie]
11047
11048 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11049 signed attributes when verifying signatures (this would break them),
11050 the detached data encoding was wrong and public keys obtained using
11051 X509_get_pubkey() weren't freed.
11052 [Steve Henson]
11053
11054 *) Add text documentation for the BUFFER functions. Also added a work around
11055 to a Win95 console bug. This was triggered by the password read stuff: the
11056 last character typed gets carried over to the next fread(). If you were
11057 generating a new cert request using 'req' for example then the last
11058 character of the passphrase would be CR which would then enter the first
11059 field as blank.
11060 [Steve Henson]
11061
11062 *) Added the new `Includes OpenSSL Cryptography Software' button as
11063 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11064 button and can be used by applications based on OpenSSL to show the
11065 relationship to the OpenSSL project.
11066 [Ralf S. Engelschall]
11067
11068 *) Remove confusing variables in function signatures in files
11069 ssl/ssl_lib.c and ssl/ssl.h.
11070 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11071
11072 *) Don't install bss_file.c under PREFIX/include/
11073 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11074
11075 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11076 functions that return function pointers and has support for NT specific
11077 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11078 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11079 unsigned to signed types: this was killing the Win32 compile.
11080 [Steve Henson]
11081
11082 *) Add new certificate file to stack functions,
11083 SSL_add_dir_cert_subjects_to_stack() and
11084 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11085 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11086 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11087 This means that Apache-SSL and similar packages don't have to mess around
11088 to add as many CAs as they want to the preferred list.
11089 [Ben Laurie]
11090
11091 *) Experiment with doxygen documentation. Currently only partially applied to
11092 ssl/ssl_lib.c.
11093 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11094 openssl.doxy as the configuration file.
11095 [Ben Laurie]
11096
11097 *) Get rid of remaining C++-style comments which strict C compilers hate.
11098 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11099
11100 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11101 compiled in by default: it has problems with large keys.
11102 [Steve Henson]
11103
11104 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11105 DH private keys and/or callback functions which directly correspond to
11106 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11107 is needed for applications which have to configure certificates on a
11108 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11109 (e.g. s_server).
11110 For the RSA certificate situation is makes no difference, but
11111 for the DSA certificate situation this fixes the "no shared cipher"
11112 problem where the OpenSSL cipher selection procedure failed because the
11113 temporary keys were not overtaken from the context and the API provided
11114 no way to reconfigure them.
11115 The new functions now let applications reconfigure the stuff and they
11116 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11117 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11118 non-public-API function ssl_cert_instantiate() is used as a helper
11119 function and also to reduce code redundancy inside ssl_rsa.c.
11120 [Ralf S. Engelschall]
11121
11122 *) Move s_server -dcert and -dkey options out of the undocumented feature
11123 area because they are useful for the DSA situation and should be
11124 recognized by the users.
11125 [Ralf S. Engelschall]
11126
11127 *) Fix the cipher decision scheme for export ciphers: the export bits are
11128 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11129 SSL_EXP_MASK. So, the original variable has to be used instead of the
11130 already masked variable.
11131 [Richard Levitte <levitte@stacken.kth.se>]
11132
11133 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11134 [Richard Levitte <levitte@stacken.kth.se>]
11135
11136 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
11137 from `int' to `unsigned int' because it's a length and initialized by
11138 EVP_DigestFinal() which expects an `unsigned int *'.
11139 [Richard Levitte <levitte@stacken.kth.se>]
11140
11141 *) Don't hard-code path to Perl interpreter on shebang line of Configure
11142 script. Instead use the usual Shell->Perl transition trick.
11143 [Ralf S. Engelschall]
11144
11145 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
11146 (in addition to RSA certificates) to match the behaviour of `openssl dsa
11147 -noout -modulus' as it's already the case for `openssl rsa -noout
11148 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
11149 currently the public key is printed (a decision which was already done by
11150 `openssl dsa -modulus' in the past) which serves a similar purpose.
11151 Additionally the NO_RSA no longer completely removes the whole -modulus
11152 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
11153 now, too.
11154 [Ralf S. Engelschall]
11155
11156 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
11157 BIO. See the source (crypto/evp/bio_ok.c) for more info.
11158 [Arne Ansper <arne@ats.cyber.ee>]
11159
11160 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
11161 to be added. Now both 'req' and 'ca' can use new objects defined in the
11162 config file.
11163 [Steve Henson]
11164
11165 *) Add cool BIO that does syslog (or event log on NT).
11166 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
11167
11168 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
11169 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
11170 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
11171 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
11172 [Ben Laurie]
11173
11174 *) Add preliminary config info for new extension code.
11175 [Steve Henson]
11176
11177 *) Make RSA_NO_PADDING really use no padding.
11178 [Ulf Moeller <ulf@fitug.de>]
11179
11180 *) Generate errors when private/public key check is done.
11181 [Ben Laurie]
11182
11183 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
11184 for some CRL extensions and new objects added.
11185 [Steve Henson]
11186
11187 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
11188 key usage extension and fuller support for authority key id.
11189 [Steve Henson]
11190
11191 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
11192 padding method for RSA, which is recommended for new applications in PKCS
11193 #1 v2.0 (RFC 2437, October 1998).
11194 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
11195 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
11196 against Bleichbacher's attack on RSA.
11197 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
11198 Ben Laurie]
11199
11200 *) Updates to the new SSL compression code
11201 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11202
11203 *) Fix so that the version number in the master secret, when passed
11204 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
11205 (because the server will not accept higher), that the version number
11206 is 0x03,0x01, not 0x03,0x00
11207 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11208
11209 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
11210 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
11211 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
11212 [Steve Henson]
11213
11214 *) Support for RAW extensions where an arbitrary extension can be
11215 created by including its DER encoding. See apps/openssl.cnf for
11216 an example.
11217 [Steve Henson]
11218
11219 *) Make sure latest Perl versions don't interpret some generated C array
11220 code as Perl array code in the crypto/err/err_genc.pl script.
11221 [Lars Weber <3weber@informatik.uni-hamburg.de>]
11222
11223 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
11224 not many people have the assembler. Various Win32 compilation fixes and
11225 update to the INSTALL.W32 file with (hopefully) more accurate Win32
11226 build instructions.
11227 [Steve Henson]
11228
11229 *) Modify configure script 'Configure' to automatically create crypto/date.h
11230 file under Win32 and also build pem.h from pem.org. New script
11231 util/mkfiles.pl to create the MINFO file on environments that can't do a
11232 'make files': perl util/mkfiles.pl >MINFO should work.
11233 [Steve Henson]
11234
11235 *) Major rework of DES function declarations, in the pursuit of correctness
11236 and purity. As a result, many evil casts evaporated, and some weirdness,
11237 too. You may find this causes warnings in your code. Zapping your evil
11238 casts will probably fix them. Mostly.
11239 [Ben Laurie]
11240
11241 *) Fix for a typo in asn1.h. Bug fix to object creation script
11242 obj_dat.pl. It considered a zero in an object definition to mean
11243 "end of object": none of the objects in objects.h have any zeros
11244 so it wasn't spotted.
11245 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
11246
11247 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
11248 Masking (CBCM). In the absence of test vectors, the best I have been able
11249 to do is check that the decrypt undoes the encrypt, so far. Send me test
11250 vectors if you have them.
11251 [Ben Laurie]
11252
11253 *) Correct calculation of key length for export ciphers (too much space was
11254 allocated for null ciphers). This has not been tested!
11255 [Ben Laurie]
11256
11257 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
11258 message is now correct (it understands "crypto" and "ssl" on its
11259 command line). There is also now an "update" option. This will update
11260 the util/ssleay.num and util/libeay.num files with any new functions.
11261 If you do a:
11262 perl util/mkdef.pl crypto ssl update
11263 it will update them.
11264 [Steve Henson]
11265
11266 *) Overhauled the Perl interface (perl/*):
11267 - ported BN stuff to OpenSSL's different BN library
11268 - made the perl/ source tree CVS-aware
11269 - renamed the package from SSLeay to OpenSSL (the files still contain
11270 their history because I've copied them in the repository)
11271 - removed obsolete files (the test scripts will be replaced
11272 by better Test::Harness variants in the future)
11273 [Ralf S. Engelschall]
11274
11275 *) First cut for a very conservative source tree cleanup:
11276 1. merge various obsolete readme texts into doc/ssleay.txt
11277 where we collect the old documents and readme texts.
11278 2. remove the first part of files where I'm already sure that we no
11279 longer need them because of three reasons: either they are just temporary
11280 files which were left by Eric or they are preserved original files where
11281 I've verified that the diff is also available in the CVS via "cvs diff
11282 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
11283 the crypto/md/ stuff).
11284 [Ralf S. Engelschall]
11285
11286 *) More extension code. Incomplete support for subject and issuer alt
11287 name, issuer and authority key id. Change the i2v function parameters
11288 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
11289 what that's for :-) Fix to ASN1 macro which messed up
11290 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
11291 [Steve Henson]
11292
11293 *) Preliminary support for ENUMERATED type. This is largely copied from the
11294 INTEGER code.
11295 [Steve Henson]
11296
11297 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
11298 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11299
11300 *) Make sure `make rehash' target really finds the `openssl' program.
11301 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11302
11303 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
11304 like to hear about it if this slows down other processors.
11305 [Ben Laurie]
11306
11307 *) Add CygWin32 platform information to Configure script.
11308 [Alan Batie <batie@aahz.jf.intel.com>]
11309
11310 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
11311 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
11312
11313 *) New program nseq to manipulate netscape certificate sequences
11314 [Steve Henson]
11315
11316 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
11317 few typos.
11318 [Steve Henson]
11319
11320 *) Fixes to BN code. Previously the default was to define BN_RECURSION
11321 but the BN code had some problems that would cause failures when
11322 doing certificate verification and some other functions.
11323 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
11324
11325 *) Add ASN1 and PEM code to support netscape certificate sequences.
11326 [Steve Henson]
11327
11328 *) Add ASN1 and PEM code to support netscape certificate sequences.
11329 [Steve Henson]
11330
11331 *) Add several PKIX and private extended key usage OIDs.
11332 [Steve Henson]
11333
11334 *) Modify the 'ca' program to handle the new extension code. Modify
11335 openssl.cnf for new extension format, add comments.
11336 [Steve Henson]
11337
11338 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
11339 and add a sample to openssl.cnf so req -x509 now adds appropriate
11340 CA extensions.
11341 [Steve Henson]
11342
11343 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
11344 error code, add initial support to X509_print() and x509 application.
11345 [Steve Henson]
11346
11347 *) Takes a deep breath and start addding X509 V3 extension support code. Add
11348 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
11349 stuff is currently isolated and isn't even compiled yet.
11350 [Steve Henson]
11351
11352 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
11353 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
11354 Removed the versions check from X509 routines when loading extensions:
11355 this allows certain broken certificates that don't set the version
11356 properly to be processed.
11357 [Steve Henson]
11358
11359 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
11360 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
11361 can still be regenerated with "make depend".
11362 [Ben Laurie]
11363
11364 *) Spelling mistake in C version of CAST-128.
11365 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
11366
11367 *) Changes to the error generation code. The perl script err-code.pl
11368 now reads in the old error codes and retains the old numbers, only
11369 adding new ones if necessary. It also only changes the .err files if new
11370 codes are added. The makefiles have been modified to only insert errors
11371 when needed (to avoid needlessly modifying header files). This is done
11372 by only inserting errors if the .err file is newer than the auto generated
11373 C file. To rebuild all the error codes from scratch (the old behaviour)
11374 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
11375 or delete all the .err files.
11376 [Steve Henson]
11377
11378 *) CAST-128 was incorrectly implemented for short keys. The C version has
11379 been fixed, but is untested. The assembler versions are also fixed, but
11380 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
11381 to regenerate it if needed.
11382 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
11383 Hagino <itojun@kame.net>]
11384
11385 *) File was opened incorrectly in randfile.c.
11386 [Ulf Möller <ulf@fitug.de>]
11387
11388 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
11389 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
11390 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
11391 al: it's just almost always a UTCTime. Note this patch adds new error
11392 codes so do a "make errors" if there are problems.
11393 [Steve Henson]
11394
11395 *) Correct Linux 1 recognition in config.
11396 [Ulf Möller <ulf@fitug.de>]
11397
11398 *) Remove pointless MD5 hash when using DSA keys in ca.
11399 [Anonymous <nobody@replay.com>]
11400
11401 *) Generate an error if given an empty string as a cert directory. Also
11402 generate an error if handed NULL (previously returned 0 to indicate an
11403 error, but didn't set one).
11404 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
11405
11406 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
11407 [Ben Laurie]
11408
11409 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
11410 parameters. This was causing a warning which killed off the Win32 compile.
11411 [Steve Henson]
11412
11413 *) Remove C++ style comments from crypto/bn/bn_local.h.
11414 [Neil Costigan <neil.costigan@celocom.com>]
11415
11416 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
11417 based on a text string, looking up short and long names and finally
11418 "dot" format. The "dot" format stuff didn't work. Added new function
11419 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
11420 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
11421 OID is not part of the table.
11422 [Steve Henson]
11423
11424 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
11425 X509_LOOKUP_by_alias().
11426 [Ben Laurie]
11427
11428 *) Sort openssl functions by name.
11429 [Ben Laurie]
11430
11431 *) Get the gendsa program working (hopefully) and add it to app list. Remove
11432 encryption from sample DSA keys (in case anyone is interested the password
11433 was "1234").
11434 [Steve Henson]
11435
11436 *) Make _all_ *_free functions accept a NULL pointer.
11437 [Frans Heymans <fheymans@isaserver.be>]
11438
11439 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
11440 NULL pointers.
11441 [Anonymous <nobody@replay.com>]
11442
11443 *) s_server should send the CAfile as acceptable CAs, not its own cert.
11444 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11445
11446 *) Don't blow it for numeric -newkey arguments to apps/req.
11447 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
11448
11449 *) Temp key "for export" tests were wrong in s3_srvr.c.
11450 [Anonymous <nobody@replay.com>]
11451
11452 *) Add prototype for temp key callback functions
11453 SSL_CTX_set_tmp_{rsa,dh}_callback().
11454 [Ben Laurie]
11455
11456 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
11457 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
11458 [Steve Henson]
11459
11460 *) X509_name_add_entry() freed the wrong thing after an error.
11461 [Arne Ansper <arne@ats.cyber.ee>]
11462
11463 *) rsa_eay.c would attempt to free a NULL context.
11464 [Arne Ansper <arne@ats.cyber.ee>]
11465
11466 *) BIO_s_socket() had a broken should_retry() on Windoze.
11467 [Arne Ansper <arne@ats.cyber.ee>]
11468
11469 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
11470 [Arne Ansper <arne@ats.cyber.ee>]
11471
11472 *) Make sure the already existing X509_STORE->depth variable is initialized
11473 in X509_STORE_new(), but document the fact that this variable is still
11474 unused in the certificate verification process.
11475 [Ralf S. Engelschall]
11476
11477 *) Fix the various library and apps files to free up pkeys obtained from
11478 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
11479 [Steve Henson]
11480
11481 *) Fix reference counting in X509_PUBKEY_get(). This makes
11482 demos/maurice/example2.c work, amongst others, probably.
11483 [Steve Henson and Ben Laurie]
11484
11485 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
11486 `openssl' and second, the shortcut symlinks for the `openssl <command>'
11487 are no longer created. This way we have a single and consistent command
11488 line interface `openssl <command>', similar to `cvs <command>'.
11489 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
11490
11491 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
11492 BIT STRING wrapper always have zero unused bits.
11493 [Steve Henson]
11494
11495 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
11496 [Steve Henson]
11497
11498 *) Make the top-level INSTALL documentation easier to understand.
11499 [Paul Sutton]
11500
11501 *) Makefiles updated to exit if an error occurs in a sub-directory
11502 make (including if user presses ^C) [Paul Sutton]
11503
11504 *) Make Montgomery context stuff explicit in RSA data structure.
11505 [Ben Laurie]
11506
11507 *) Fix build order of pem and err to allow for generated pem.h.
11508 [Ben Laurie]
11509
11510 *) Fix renumbering bug in X509_NAME_delete_entry().
11511 [Ben Laurie]
11512
11513 *) Enhanced the err-ins.pl script so it makes the error library number
11514 global and can add a library name. This is needed for external ASN1 and
11515 other error libraries.
11516 [Steve Henson]
11517
11518 *) Fixed sk_insert which never worked properly.
11519 [Steve Henson]
11520
11521 *) Fix ASN1 macros so they can handle indefinite length construted
11522 EXPLICIT tags. Some non standard certificates use these: they can now
11523 be read in.
11524 [Steve Henson]
11525
11526 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
11527 into a single doc/ssleay.txt bundle. This way the information is still
11528 preserved but no longer messes up this directory. Now it's new room for
11529 the new set of documenation files.
11530 [Ralf S. Engelschall]
11531
11532 *) SETs were incorrectly DER encoded. This was a major pain, because they
11533 shared code with SEQUENCEs, which aren't coded the same. This means that
11534 almost everything to do with SETs or SEQUENCEs has either changed name or
11535 number of arguments.
11536 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
11537
11538 *) Fix test data to work with the above.
11539 [Ben Laurie]
11540
11541 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
11542 was already fixed by Eric for 0.9.1 it seems.
11543 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
11544
11545 *) Autodetect FreeBSD3.
11546 [Ben Laurie]
11547
11548 *) Fix various bugs in Configure. This affects the following platforms:
11549 nextstep
11550 ncr-scde
11551 unixware-2.0
11552 unixware-2.0-pentium
11553 sco5-cc.
11554 [Ben Laurie]
11555
11556 *) Eliminate generated files from CVS. Reorder tests to regenerate files
11557 before they are needed.
11558 [Ben Laurie]
11559
11560 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
11561 [Ben Laurie]
11562
11563
11564 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
11565
11566 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
11567 changed SSLeay to OpenSSL in version strings.
11568 [Ralf S. Engelschall]
11569
11570 *) Some fixups to the top-level documents.
11571 [Paul Sutton]
11572
11573 *) Fixed the nasty bug where rsaref.h was not found under compile-time
11574 because the symlink to include/ was missing.
11575 [Ralf S. Engelschall]
11576
11577 *) Incorporated the popular no-RSA/DSA-only patches
11578 which allow to compile a RSA-free SSLeay.
11579 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
11580
11581 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
11582 when "ssleay" is still not found.
11583 [Ralf S. Engelschall]
11584
11585 *) Added more platforms to Configure: Cray T3E, HPUX 11,
11586 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
11587
11588 *) Updated the README file.
11589 [Ralf S. Engelschall]
11590
11591 *) Added various .cvsignore files in the CVS repository subdirs
11592 to make a "cvs update" really silent.
11593 [Ralf S. Engelschall]
11594
11595 *) Recompiled the error-definition header files and added
11596 missing symbols to the Win32 linker tables.
11597 [Ralf S. Engelschall]
11598
11599 *) Cleaned up the top-level documents;
11600 o new files: CHANGES and LICENSE
11601 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
11602 o merged COPYRIGHT into LICENSE
11603 o removed obsolete TODO file
11604 o renamed MICROSOFT to INSTALL.W32
11605 [Ralf S. Engelschall]
11606
11607 *) Removed dummy files from the 0.9.1b source tree:
11608 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
11609 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
11610 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
11611 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
11612 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
11613 [Ralf S. Engelschall]
11614
11615 *) Added various platform portability fixes.
11616 [Mark J. Cox]
11617
11618 *) The Genesis of the OpenSSL rpject:
11619 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
11620 Young and Tim J. Hudson created while they were working for C2Net until
11621 summer 1998.
11622 [The OpenSSL Project]
11623
11624
11625 Changes between 0.9.0b and 0.9.1b [not released]
11626
11627 *) Updated a few CA certificates under certs/
11628 [Eric A. Young]
11629
11630 *) Changed some BIGNUM api stuff.
11631 [Eric A. Young]
11632
11633 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
11634 DGUX x86, Linux Alpha, etc.
11635 [Eric A. Young]
11636
11637 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
11638 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
11639 available).
11640 [Eric A. Young]
11641
11642 *) Add -strparse option to asn1pars program which parses nested
11643 binary structures
11644 [Dr Stephen Henson <shenson@bigfoot.com>]
11645
11646 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
11647 [Eric A. Young]
11648
11649 *) DSA fix for "ca" program.
11650 [Eric A. Young]
11651
11652 *) Added "-genkey" option to "dsaparam" program.
11653 [Eric A. Young]
11654
11655 *) Added RIPE MD160 (rmd160) message digest.
11656 [Eric A. Young]
11657
11658 *) Added -a (all) option to "ssleay version" command.
11659 [Eric A. Young]
11660
11661 *) Added PLATFORM define which is the id given to Configure.
11662 [Eric A. Young]
11663
11664 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
11665 [Eric A. Young]
11666
11667 *) Extended the ASN.1 parser routines.
11668 [Eric A. Young]
11669
11670 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
11671 [Eric A. Young]
11672
11673 *) Added a BN_CTX to the BN library.
11674 [Eric A. Young]
11675
11676 *) Fixed the weak key values in DES library
11677 [Eric A. Young]
11678
11679 *) Changed API in EVP library for cipher aliases.
11680 [Eric A. Young]
11681
11682 *) Added support for RC2/64bit cipher.
11683 [Eric A. Young]
11684
11685 *) Converted the lhash library to the crypto/mem.c functions.
11686 [Eric A. Young]
11687
11688 *) Added more recognized ASN.1 object ids.
11689 [Eric A. Young]
11690
11691 *) Added more RSA padding checks for SSL/TLS.
11692 [Eric A. Young]
11693
11694 *) Added BIO proxy/filter functionality.
11695 [Eric A. Young]
11696
11697 *) Added extra_certs to SSL_CTX which can be used
11698 send extra CA certificates to the client in the CA cert chain sending
11699 process. It can be configured with SSL_CTX_add_extra_chain_cert().
11700 [Eric A. Young]
11701
11702 *) Now Fortezza is denied in the authentication phase because
11703 this is key exchange mechanism is not supported by SSLeay at all.
11704 [Eric A. Young]
11705
11706 *) Additional PKCS1 checks.
11707 [Eric A. Young]
11708
11709 *) Support the string "TLSv1" for all TLS v1 ciphers.
11710 [Eric A. Young]
11711
11712 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
11713 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
11714 [Eric A. Young]
11715
11716 *) Fixed a few memory leaks.
11717 [Eric A. Young]
11718
11719 *) Fixed various code and comment typos.
11720 [Eric A. Young]
11721
11722 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
11723 bytes sent in the client random.
11724 [Edward Bishop <ebishop@spyglass.com>]
11725