5 Changes between 0.9.8zb and 0.9.8zc [xx XXX xxxx]
9 Changes between 0.9.8za and 0.9.8zb [6 Aug 2014]
11 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
12 to a denial of service attack. A malicious server can crash the client
13 with a null pointer dereference (read) by specifying an anonymous (EC)DH
14 ciphersuite and sending carefully crafted handshake messages.
16 Thanks to Felix Gröbert (Google) for discovering and researching this
21 *) By sending carefully crafted DTLS packets an attacker could cause openssl
22 to leak memory. This can be exploited through a Denial of Service attack.
23 Thanks to Adam Langley for discovering and researching this issue.
27 *) An attacker can force openssl to consume large amounts of memory whilst
28 processing DTLS handshake messages. This can be exploited through a
29 Denial of Service attack.
30 Thanks to Adam Langley for discovering and researching this issue.
34 *) An attacker can force an error condition which causes openssl to crash
35 whilst processing DTLS packets due to memory being freed twice. This
36 can be exploited through a Denial of Service attack.
37 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
42 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
43 X509_name_oneline, X509_name_print_ex et al. to leak some information
44 from the stack. Applications may be affected if they echo pretty printing
45 output to the attacker.
47 Thanks to Ivan Fratric (Google) for discovering this issue.
49 [Emilia Käsper, and Steve Henson]
51 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
52 for corner cases. (Certain input points at infinity could lead to
53 bogus results, with non-infinity inputs mapped to infinity too.)
56 Changes between 0.9.8y and 0.9.8za [5 Jun 2014]
58 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
59 handshake can force the use of weak keying material in OpenSSL
60 SSL/TLS clients and servers.
62 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
63 researching this issue. (CVE-2014-0224)
64 [KIKUCHI Masashi, Steve Henson]
66 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
67 OpenSSL DTLS client the code can be made to recurse eventually crashing
70 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
72 [Imre Rad, Steve Henson]
74 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
75 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
76 client or server. This is potentially exploitable to run arbitrary
77 code on a vulnerable client or server.
79 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
80 [Jüri Aedla, Steve Henson]
82 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
83 are subject to a denial of service attack.
85 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
86 this issue. (CVE-2014-3470)
87 [Felix Gröbert, Ivan Fratric, Steve Henson]
89 *) Fix for the attack described in the paper "Recovering OpenSSL
90 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
91 by Yuval Yarom and Naomi Benger. Details can be obtained from:
92 http://eprint.iacr.org/2014/140
94 Thanks to Yuval Yarom and Naomi Benger for discovering this
95 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
96 [Yuval Yarom and Naomi Benger]
98 Thanks to mancha for backporting the fix to the 0.9.8 branch.
100 *) Fix handling of warning-level alerts in SSL23 client mode so they
101 don't cause client-side termination (eg. on SNI unrecognized_name
102 warnings). Add client and server support for six additional alerts
103 per RFC 6066 and RFC 4279.
106 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
107 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
108 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
109 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
110 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
111 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
112 [Rob Stradling, Adam Langley]
114 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
116 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
118 This addresses the flaw in CBC record processing discovered by
119 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
120 at: http://www.isg.rhul.ac.uk/tls/
122 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
123 Security Group at Royal Holloway, University of London
124 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
125 Emilia Käsper for the initial patch.
127 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
129 *) Return an error when checking OCSP signatures when key is NULL.
130 This fixes a DoS attack. (CVE-2013-0166)
133 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
134 the right response is stapled. Also change SSL_get_certificate()
135 so it returns the certificate actually sent.
136 See http://rt.openssl.org/Ticket/Display.html?id=2836.
138 [Rob Stradling <rob.stradling@comodo.com>]
140 *) Fix possible deadlock when decoding public keys.
143 Changes between 0.9.8w and 0.9.8x [10 May 2012]
145 *) Sanity check record length before skipping explicit IV in DTLS
148 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
149 fuzzing as a service testing platform.
153 *) Initialise tkeylen properly when encrypting CMS messages.
154 Thanks to Solar Designer of Openwall for reporting this issue.
157 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
159 *) The fix for CVE-2012-2110 did not take into account that the
160 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
161 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
162 rejecting negative len parameter. (CVE-2012-2131)
163 [Tomas Hoger <thoger@redhat.com>]
165 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
167 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
168 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
169 in CRYPTO_realloc_clean.
171 Thanks to Tavis Ormandy, Google Security Team, for discovering this
172 issue and to Adam Langley <agl@chromium.org> for fixing it.
174 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
176 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
178 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
179 in CMS and PKCS7 code. When RSA decryption fails use a random key for
180 content decryption and always return the same error. Note: this attack
181 needs on average 2^20 messages so it only affects automated senders. The
182 old behaviour can be reenabled in the CMS code by setting the
183 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
184 an MMA defence is not necessary.
185 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
186 this issue. (CVE-2012-0884)
189 *) Fix CVE-2011-4619: make sure we really are receiving a
190 client hello before rejecting multiple SGC restarts. Thanks to
191 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
194 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
196 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
197 Thanks to Antonio Martin, Enterprise Secure Access Research and
198 Development, Cisco Systems, Inc. for discovering this bug and
199 preparing a fix. (CVE-2012-0050)
202 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
204 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
205 of the Vaudenay padding oracle attack on CBC mode encryption
206 which enables an efficient plaintext recovery attack against
207 the OpenSSL implementation of DTLS. Their attack exploits timing
208 differences arising during decryption processing. A research
209 paper describing this attack can be found at:
210 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
211 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
212 Security Group at Royal Holloway, University of London
213 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
214 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
215 for preparing the fix. (CVE-2011-4108)
216 [Robin Seggelmann, Michael Tuexen]
218 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
219 [Ben Laurie, Kasper <ekasper@google.com>]
221 *) Clear bytes used for block padding of SSL 3.0 records.
223 [Adam Langley (Google)]
225 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
226 Kadianakis <desnacked@gmail.com> for discovering this issue and
227 Adam Langley for preparing the fix. (CVE-2011-4619)
228 [Adam Langley (Google)]
230 *) Prevent malformed RFC3779 data triggering an assertion failure.
231 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
232 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
233 [Rob Austein <sra@hactrn.net>]
235 *) Fix ssl_ciph.c set-up race.
236 [Adam Langley (Google)]
238 *) Fix spurious failures in ecdsatest.c.
239 [Emilia Käsper (Google)]
241 *) Fix the BIO_f_buffer() implementation (which was mixing different
242 interpretations of the '..._len' fields).
243 [Adam Langley (Google)]
245 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
246 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
247 threads won't reuse the same blinding coefficients.
249 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
250 lock to call BN_BLINDING_invert_ex, and avoids one use of
251 BN_BLINDING_update for each BN_BLINDING structure (previously,
252 the last update always remained unused).
253 [Emilia Käsper (Google)]
255 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
256 for multi-threaded use of ECDH.
257 [Adam Langley (Google)]
259 *) Fix x509_name_ex_d2i memory leak on bad inputs.
262 *) Add protection against ECDSA timing attacks as mentioned in the paper
263 by Billy Bob Brumley and Nicola Tuveri, see:
265 http://eprint.iacr.org/2011/232.pdf
267 [Billy Bob Brumley and Nicola Tuveri]
269 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
271 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
272 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
274 *) Fix bug in string printing code: if *any* escaping is enabled we must
275 escape the escape character (backslash) or the resulting string is
279 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
281 *) Disable code workaround for ancient and obsolete Netscape browsers
282 and servers: an attacker can use it in a ciphersuite downgrade attack.
283 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
286 *) Fixed J-PAKE implementation error, originally discovered by
287 Sebastien Martini, further info and confirmation from Stefan
288 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
291 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
293 *) Fix extension code to avoid race conditions which can result in a buffer
294 overrun vulnerability: resumed sessions must not be modified as they can
295 be shared by multiple threads. CVE-2010-3864
298 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
301 *) Don't reencode certificate when calculating signature: cache and use
302 the original encoding instead. This makes signature verification of
303 some broken encodings work correctly.
306 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
307 is also one of the inputs.
308 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
310 *) Don't repeatedly append PBE algorithms to table if they already exist.
311 Sort table on each new add. This effectively makes the table read only
312 after all algorithms are added and subsequent calls to PKCS12_pbe_add
316 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
318 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
321 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
322 access or freeing data twice (CVE-2010-0742)
323 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
325 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
326 common in certificates and some applications which only call
327 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
331 Reduce copying into .apps and .test in makevms.com
332 Don't try to use blank CA certificate in CA.com
333 Allow use of C files from original directories in maketests.com
334 [Steven M. Schweda" <sms@antinode.info>]
336 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
338 *) When rejecting SSL/TLS records due to an incorrect version number, never
339 update s->server with a new major version number. As of
340 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
341 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
342 the previous behavior could result in a read attempt at NULL when
343 receiving specific incorrect SSL/TLS records once record payload
344 protection is active. (CVE-2010-0740)
345 [Bodo Moeller, Adam Langley <agl@chromium.org>]
347 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
348 could be crashed if the relevant tables were not present (e.g. chrooted).
349 [Tomas Hoger <thoger@redhat.com>]
351 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
353 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
354 [Martin Olsson, Neel Mehta]
356 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
357 accommodate for stack sorting, always a write lock!).
360 *) On some versions of WIN32 Heap32Next is very slow. This can cause
361 excessive delays in the RAND_poll(): over a minute. As a workaround
362 include a time check in the inner Heap32Next loop too.
365 *) The code that handled flushing of data in SSL/TLS originally used the
366 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
367 the problem outlined in PR#1949. The fix suggested there however can
368 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
369 of Apache). So instead simplify the code to flush unconditionally.
370 This should be fine since flushing with no data to flush is a no op.
373 *) Handle TLS versions 2.0 and later properly and correctly use the
374 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
375 off ancient servers have a habit of sticking around for a while...
378 *) Modify compression code so it frees up structures without using the
379 ex_data callbacks. This works around a problem where some applications
380 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
381 restarting) then use compression (e.g. SSL with compression) later.
382 This results in significant per-connection memory leaks and
383 has caused some security issues including CVE-2008-1678 and
387 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
388 change when encrypting or decrypting.
391 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
392 connect and renegotiate with servers which do not support RI.
393 Until RI is more widely deployed this option is enabled by default.
396 *) Add "missing" ssl ctrls to clear options and mode.
399 *) If client attempts to renegotiate and doesn't support RI respond with
400 a no_renegotiation alert as required by RFC5746. Some renegotiating
401 TLS clients will continue a connection gracefully when they receive
402 the alert. Unfortunately OpenSSL mishandled this alert and would hang
403 waiting for a server hello which it will never receive. Now we treat a
404 received no_renegotiation alert as a fatal error. This is because
405 applications requesting a renegotiation might well expect it to succeed
406 and would have no code in place to handle the server denying it so the
407 only safe thing to do is to terminate the connection.
410 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
411 peer supports secure renegotiation and 0 otherwise. Print out peer
412 renegotiation support in s_client/s_server.
415 *) Replace the highly broken and deprecated SPKAC certification method with
416 the updated NID creation version. This should correctly handle UTF8.
419 *) Implement RFC5746. Re-enable renegotiation but require the extension
420 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
421 turns out to be a bad idea. It has been replaced by
422 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
423 SSL_CTX_set_options(). This is really not recommended unless you
424 know what you are doing.
425 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
427 *) Fixes to stateless session resumption handling. Use initial_ctx when
428 issuing and attempting to decrypt tickets in case it has changed during
429 servername handling. Use a non-zero length session ID when attempting
430 stateless session resumption: this makes it possible to determine if
431 a resumption has occurred immediately after receiving server hello
432 (several places in OpenSSL subtly assume this) instead of later in
436 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
437 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
438 fixes for a few places where the return code is not checked
440 [Julia Lawall <julia@diku.dk>]
442 *) Add --strict-warnings option to Configure script to include devteam
443 warnings in other configurations.
446 *) Add support for --libdir option and LIBDIR variable in makefiles. This
447 makes it possible to install openssl libraries in locations which
448 have names other than "lib", for example "/usr/lib64" which some
450 [Steve Henson, based on patch from Jeremy Utley]
452 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
453 X690 8.9.12 and can produce some misleading textual output of OIDs.
454 [Steve Henson, reported by Dan Kaminsky]
456 *) Delete MD2 from algorithm tables. This follows the recommendation in
457 several standards that it is not used in new applications due to
458 several cryptographic weaknesses. For binary compatibility reasons
459 the MD2 API is still compiled in by default.
462 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
466 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
467 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
469 [Guenter <lists@gknw.net>]
471 *) Fix the server certificate chain building code to use X509_verify_cert(),
472 it used to have an ad-hoc builder which was unable to cope with anything
473 other than a simple chain.
474 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
476 *) Don't check self signed certificate signatures in X509_verify_cert()
477 by default (a flag can override this): it just wastes time without
478 adding any security. As a useful side effect self signed root CAs
479 with non-FIPS digests are now usable in FIPS mode.
482 *) In dtls1_process_out_of_seq_message() the check if the current message
483 is already buffered was missing. For every new message was memory
484 allocated, allowing an attacker to perform an denial of service attack
485 with sending out of seq handshake messages until there is no memory
486 left. Additionally every future messege was buffered, even if the
487 sequence number made no sense and would be part of another handshake.
488 So only messages with sequence numbers less than 10 in advance will be
489 buffered. (CVE-2009-1378)
490 [Robin Seggelmann, discovered by Daniel Mentz]
492 *) Records are buffered if they arrive with a future epoch to be
493 processed after finishing the corresponding handshake. There is
494 currently no limitation to this buffer allowing an attacker to perform
495 a DOS attack with sending records with future epochs until there is no
496 memory left. This patch adds the pqueue_size() function to detemine
497 the size of a buffer and limits the record buffer to 100 entries.
499 [Robin Seggelmann, discovered by Daniel Mentz]
501 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
502 parent structure is freed. (CVE-2009-1379)
505 *) Handle non-blocking I/O properly in SSL_shutdown() call.
506 [Darryl Miles <darryl-mailinglists@netbauds.net>]
509 [Ilya O. <vrghost@gmail.com>]
511 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
513 *) Disable renegotiation completely - this fixes a severe security
514 problem (CVE-2009-3555) at the cost of breaking all
515 renegotiation. Renegotiation can be re-enabled by setting
516 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
517 run-time. This is really not recommended unless you know what
521 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
523 *) Don't set val to NULL when freeing up structures, it is freed up by
524 underlying code. If sizeof(void *) > sizeof(long) this can result in
525 zeroing past the valid field. (CVE-2009-0789)
526 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
528 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
529 checked correctly. This would allow some invalid signed attributes to
530 appear to verify correctly. (CVE-2009-0591)
531 [Ivan Nestlerode <inestlerode@us.ibm.com>]
533 *) Reject UniversalString and BMPString types with invalid lengths. This
534 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
535 a legal length. (CVE-2009-0590)
538 *) Set S/MIME signing as the default purpose rather than setting it
539 unconditionally. This allows applications to override it at the store
543 *) Permit restricted recursion of ASN1 strings. This is needed in practice
544 to handle some structures.
547 *) Improve efficiency of mem_gets: don't search whole buffer each time
549 [Jeremy Shapiro <jnshapir@us.ibm.com>]
551 *) New -hex option for openssl rand.
554 *) Print out UTF8String and NumericString when parsing ASN1.
557 *) Support NumericString type for name components.
560 *) Allow CC in the environment to override the automatically chosen
561 compiler. Note that nothing is done to ensure flags work with the
565 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
567 *) Properly check EVP_VerifyFinal() and similar return values
569 [Ben Laurie, Bodo Moeller, Google Security Team]
571 *) Enable TLS extensions by default.
574 *) Allow the CHIL engine to be loaded, whether the application is
575 multithreaded or not. (This does not release the developer from the
576 obligation to set up the dynamic locking callbacks.)
577 [Sander Temme <sander@temme.net>]
579 *) Use correct exit code if there is an error in dgst command.
580 [Steve Henson; problem pointed out by Roland Dirlewanger]
582 *) Tweak Configure so that you need to say "experimental-jpake" to enable
583 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
586 *) Add experimental JPAKE support, including demo authentication in
587 s_client and s_server.
590 *) Set the comparison function in v3_addr_canonize().
591 [Rob Austein <sra@hactrn.net>]
593 *) Add support for XMPP STARTTLS in s_client.
594 [Philip Paeps <philip@freebsd.org>]
596 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
597 to ensure that even with this option, only ciphersuites in the
598 server's preference list will be accepted. (Note that the option
599 applies only when resuming a session, so the earlier behavior was
600 just about the algorithm choice for symmetric cryptography.)
603 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
605 *) Fix NULL pointer dereference if a DTLS server received
606 ChangeCipherSpec as first record (CVE-2009-1386).
609 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
610 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
613 *) The fix in 0.9.8c that supposedly got rid of unsafe
614 double-checked locking was incomplete for RSA blinding,
615 addressing just one layer of what turns out to have been
616 doubly unsafe triple-checked locking.
618 So now fix this for real by retiring the MONT_HELPER macro
619 in crypto/rsa/rsa_eay.c.
621 [Bodo Moeller; problem pointed out by Marius Schilder]
623 *) Various precautionary measures:
625 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
627 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
628 (NB: This would require knowledge of the secret session ticket key
629 to exploit, in which case you'd be SOL either way.)
631 - Change bn_nist.c so that it will properly handle input BIGNUMs
632 outside the expected range.
634 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
637 [Neel Mehta, Bodo Moeller]
639 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
640 the load fails. Useful for distros.
641 [Ben Laurie and the FreeBSD team]
643 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
646 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
649 *) Expand ENGINE to support engine supplied SSL client certificate functions.
651 This work was sponsored by Logica.
654 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
655 keystores. Support for SSL/TLS client authentication too.
656 Not compiled unless enable-capieng specified to Configure.
658 This work was sponsored by Logica.
661 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
662 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
663 attribute creation routines such as certifcate requests and PKCS#12
667 Changes between 0.9.8g and 0.9.8h [28 May 2008]
669 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
670 handshake which could lead to a cilent crash as found using the
671 Codenomicon TLS test suite (CVE-2008-1672)
672 [Steve Henson, Mark Cox]
674 *) Fix double free in TLS server name extensions which could lead to
675 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
678 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
680 Clear the error queue to ensure that error entries left from
681 older function calls do not interfere with the correct operation.
682 [Lutz Jaenicke, Erik de Castro Lopo]
684 *) Remove root CA certificates of commercial CAs:
686 The OpenSSL project does not recommend any specific CA and does not
687 have any policy with respect to including or excluding any CA.
688 Therefore it does not make any sense to ship an arbitrary selection
689 of root CA certificates with the OpenSSL software.
692 *) RSA OAEP patches to fix two separate invalid memory reads.
693 The first one involves inputs when 'lzero' is greater than
694 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
695 before the beginning of from). The second one involves inputs where
696 the 'db' section contains nothing but zeroes (there is a one-byte
697 invalid read after the end of 'db').
698 [Ivan Nestlerode <inestlerode@us.ibm.com>]
700 *) Partial backport from 0.9.9-dev:
702 Introduce bn_mul_mont (dedicated Montgomery multiplication
703 procedure) as a candidate for BIGNUM assembler implementation.
704 While 0.9.9-dev uses assembler for various architectures, only
705 x86_64 is available by default here in the 0.9.8 branch, and
706 32-bit x86 is available through a compile-time setting.
708 To try the 32-bit x86 assembler implementation, use Configure
709 option "enable-montasm" (which exists only for this backport).
711 As "enable-montasm" for 32-bit x86 disclaims code stability
712 anyway, in this constellation we activate additional code
713 backported from 0.9.9-dev for further performance improvements,
714 namely BN_from_montgomery_word. (To enable this otherwise,
715 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
717 [Andy Polyakov (backport partially by Bodo Moeller)]
719 *) Add TLS session ticket callback. This allows an application to set
720 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
721 values. This is useful for key rollover for example where several key
722 sets may exist with different names.
725 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
726 This was broken until now in 0.9.8 releases, such that the only way
727 a registered ENGINE could be used (assuming it initialises
728 successfully on the host) was to explicitly set it as the default
729 for the relevant algorithms. This is in contradiction with 0.9.7
730 behaviour and the documentation. With this fix, when an ENGINE is
731 registered into a given algorithm's table of implementations, the
732 'uptodate' flag is reset so that auto-discovery will be used next
733 time a new context for that algorithm attempts to select an
735 [Ian Lister (tweaked by Geoff Thorpe)]
737 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
738 implemention in the following ways:
740 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
743 Lack of BER streaming support means one pass streaming processing is
744 only supported if data is detached: setting the streaming flag is
745 ignored for embedded content.
747 CMS support is disabled by default and must be explicitly enabled
748 with the enable-cms configuration option.
751 *) Update the GMP engine glue to do direct copies between BIGNUM and
752 mpz_t when openssl and GMP use the same limb size. Otherwise the
753 existing "conversion via a text string export" trick is still used.
754 [Paul Sheer <paulsheer@gmail.com>]
756 *) Zlib compression BIO. This is a filter BIO which compressed and
757 uncompresses any data passed through it.
760 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
761 RFC3394 compatible AES key wrapping.
764 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
765 sets string data without copying. X509_ALGOR_set0() and
766 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
767 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
768 from an X509_ATTRIBUTE structure optionally checking it occurs only
769 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
773 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
774 to get the expected BN_FLG_CONSTTIME behavior.
775 [Bodo Moeller (Google)]
779 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
780 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
781 - added some more tests to do_tests.pl
782 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
783 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
784 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
785 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
786 - various changes to netware.pl to enable gcc-cross builds on Win32
788 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
789 - various changes to fix missing prototype warnings
790 - fixed x86nasm.pl to create correct asm files for NASM COFF output
791 - added AES, WHIRLPOOL and CPUID assembler code to build files
792 - added missing AES assembler make rules to mk1mf.pl
793 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
794 [Guenter Knauf <eflash@gmx.net>]
796 *) Implement certificate status request TLS extension defined in RFC3546.
797 A client can set the appropriate parameters and receive the encoded
798 OCSP response via a callback. A server can query the supplied parameters
799 and set the encoded OCSP response in the callback. Add simplified examples
800 to s_client and s_server.
803 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
806 + Binary incompatibility of ssl_ctx_st structure
807 + DTLS interoperation with non-compliant servers
808 + Don't call get_session_cb() without proposed session
809 + Fix ia64 assembler code
810 [Andy Polyakov, Steve Henson]
812 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
814 *) DTLS Handshake overhaul. There were longstanding issues with
815 OpenSSL DTLS implementation, which were making it impossible for
816 RFC 4347 compliant client to communicate with OpenSSL server.
817 Unfortunately just fixing these incompatibilities would "cut off"
818 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
819 server keeps tolerating non RFC compliant syntax. The opposite is
820 not true, 0.9.8f client can not communicate with earlier server.
821 This update even addresses CVE-2007-4995.
824 *) Changes to avoid need for function casts in OpenSSL: some compilers
825 (gcc 4.2 and later) reject their use.
826 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
829 *) Add RFC4507 support to OpenSSL. This includes the corrections in
830 RFC4507bis. The encrypted ticket format is an encrypted encoded
831 SSL_SESSION structure, that way new session features are automatically
834 If a client application caches session in an SSL_SESSION structure
835 support is transparent because tickets are now stored in the encoded
838 The SSL_CTX structure automatically generates keys for ticket
839 protection in servers so again support should be possible
840 with no application modification.
842 If a client or server wishes to disable RFC4507 support then the option
843 SSL_OP_NO_TICKET can be set.
845 Add a TLS extension debugging callback to allow the contents of any client
846 or server extensions to be examined.
848 This work was sponsored by Google.
851 *) Add initial support for TLS extensions, specifically for the server_name
852 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
853 have new members for a host name. The SSL data structure has an
854 additional member SSL_CTX *initial_ctx so that new sessions can be
855 stored in that context to allow for session resumption, even after the
856 SSL has been switched to a new SSL_CTX in reaction to a client's
857 server_name extension.
859 New functions (subject to change):
862 SSL_get_servername_type()
865 New CTRL codes and macros (subject to change):
867 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
868 - SSL_CTX_set_tlsext_servername_callback()
869 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
870 - SSL_CTX_set_tlsext_servername_arg()
871 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
873 openssl s_client has a new '-servername ...' option.
875 openssl s_server has new options '-servername_host ...', '-cert2 ...',
876 '-key2 ...', '-servername_fatal' (subject to change). This allows
877 testing the HostName extension for a specific single host name ('-cert'
878 and '-key' remain fallbacks for handshakes without HostName
879 negotiation). If the unrecogninzed_name alert has to be sent, this by
880 default is a warning; it becomes fatal with the '-servername_fatal'
883 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
885 *) Add AES and SSE2 assembly language support to VC++ build.
888 *) Mitigate attack on final subtraction in Montgomery reduction.
891 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
892 (which previously caused an internal error).
895 *) Squeeze another 10% out of IGE mode when in != out.
898 *) AES IGE mode speedup.
899 [Dean Gaudet (Google)]
901 *) Add the Korean symmetric 128-bit cipher SEED (see
902 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
903 add SEED ciphersuites from RFC 4162:
905 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
906 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
907 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
908 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
910 To minimize changes between patchlevels in the OpenSSL 0.9.8
911 series, SEED remains excluded from compilation unless OpenSSL
912 is configured with 'enable-seed'.
915 *) Mitigate branch prediction attacks, which can be practical if a
916 single processor is shared, allowing a spy process to extract
917 information. For detailed background information, see
918 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
919 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
920 and Necessary Software Countermeasures"). The core of the change
921 are new versions BN_div_no_branch() and
922 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
923 respectively, which are slower, but avoid the security-relevant
924 conditional branches. These are automatically called by BN_div()
925 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
926 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
927 remove a conditional branch.
929 BN_FLG_CONSTTIME is the new name for the previous
930 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
931 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
932 in the exponent causes BN_mod_exp_mont() to use the alternative
933 implementation in BN_mod_exp_mont_consttime().) The old name
934 remains as a deprecated alias.
936 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
937 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
938 constant-time implementations for more than just exponentiation.
939 Here too the old name is kept as a deprecated alias.
941 BN_BLINDING_new() will now use BN_dup() for the modulus so that
942 the BN_BLINDING structure gets an independent copy of the
943 modulus. This means that the previous "BIGNUM *m" argument to
944 BN_BLINDING_new() and to BN_BLINDING_create_param() now
945 essentially becomes "const BIGNUM *m", although we can't actually
946 change this in the header file before 0.9.9. It allows
947 RSA_setup_blinding() to use BN_with_flags() on the modulus to
948 enable BN_FLG_CONSTTIME.
950 [Matthew D Wood (Intel Corp)]
952 *) In the SSL/TLS server implementation, be strict about session ID
953 context matching (which matters if an application uses a single
954 external cache for different purposes). Previously,
955 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
956 set. This did ensure strict client verification, but meant that,
957 with applications using a single external cache for quite
958 different requirements, clients could circumvent ciphersuite
959 restrictions for a given session ID context by starting a session
960 in a different context.
963 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
964 a ciphersuite string such as "DEFAULT:RSA" cannot enable
965 authentication-only ciphersuites.
968 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
969 not complete and could lead to a possible single byte overflow
970 (CVE-2007-5135) [Ben Laurie]
972 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
974 *) Since AES128 and AES256 (and similarly Camellia128 and
975 Camellia256) share a single mask bit in the logic of
976 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
977 kludge to work properly if AES128 is available and AES256 isn't
978 (or if Camellia128 is available and Camellia256 isn't).
981 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
982 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
983 When a point or a seed is encoded in a BIT STRING, we need to
984 prevent the removal of trailing zero bits to get the proper DER
985 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
986 of a NamedBitList, for which trailing 0 bits need to be removed.)
989 *) Have SSL/TLS server implementation tolerate "mismatched" record
990 protocol version while receiving ClientHello even if the
991 ClientHello is fragmented. (The server can't insist on the
992 particular protocol version it has chosen before the ServerHello
993 message has informed the client about his choice.)
996 *) Add RFC 3779 support.
997 [Rob Austein for ARIN, Ben Laurie]
999 *) Load error codes if they are not already present instead of using a
1000 static variable. This allows them to be cleanly unloaded and reloaded.
1001 Improve header file function name parsing.
1004 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1005 or CAPABILITY handshake as required by RFCs.
1008 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1010 *) Introduce limits to prevent malicious keys being able to
1011 cause a denial of service. (CVE-2006-2940)
1012 [Steve Henson, Bodo Moeller]
1014 *) Fix ASN.1 parsing of certain invalid structures that can result
1015 in a denial of service. (CVE-2006-2937) [Steve Henson]
1017 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1018 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1020 *) Fix SSL client code which could crash if connecting to a
1021 malicious SSLv2 server. (CVE-2006-4343)
1022 [Tavis Ormandy and Will Drewry, Google Security Team]
1024 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1025 match only those. Before that, "AES256-SHA" would be interpreted
1026 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1027 the same strength classification in 0.9.7h) as we currently only
1028 have a single AES bit in the ciphersuite description bitmap.
1029 That change, however, also applied to ciphersuite strings such as
1030 "RC4-MD5" that intentionally matched multiple ciphersuites --
1031 namely, SSL 2.0 ciphersuites in addition to the more common ones
1032 from SSL 3.0/TLS 1.0.
1034 So we change the selection algorithm again: Naming an explicit
1035 ciphersuite selects this one ciphersuite, and any other similar
1036 ciphersuite (same bitmap) from *other* protocol versions.
1037 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1038 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1040 Since SSL 2.0 does not have any ciphersuites for which the
1041 128/256 bit distinction would be relevant, this works for now.
1042 The proper fix will be to use different bits for AES128 and
1043 AES256, which would have avoided the problems from the beginning;
1044 however, bits are scarce, so we can only do this in a new release
1045 (not just a patchlevel) when we can change the SSL_CIPHER
1046 definition to split the single 'unsigned long mask' bitmap into
1047 multiple values to extend the available space.
1051 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1053 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1054 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1056 *) Add AES IGE and biIGE modes.
1059 *) Change the Unix randomness entropy gathering to use poll() when
1060 possible instead of select(), since the latter has some
1061 undesirable limitations.
1062 [Darryl Miles via Richard Levitte and Bodo Moeller]
1064 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1065 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1066 cannot be implicitly activated as part of, e.g., the "AES" alias.
1067 However, please upgrade to OpenSSL 0.9.9[-dev] for
1068 non-experimental use of the ECC ciphersuites to get TLS extension
1069 support, which is required for curve and point format negotiation
1070 to avoid potential handshake problems.
1073 *) Disable rogue ciphersuites:
1075 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1076 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1077 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1079 The latter two were purportedly from
1080 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1083 Also deactivate the remaining ciphersuites from
1084 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1085 unofficial, and the ID has long expired.
1088 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1089 dual-core machines) and other potential thread-safety issues.
1092 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1093 versions), which is now available for royalty-free use
1094 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1095 Also, add Camellia TLS ciphersuites from RFC 4132.
1097 To minimize changes between patchlevels in the OpenSSL 0.9.8
1098 series, Camellia remains excluded from compilation unless OpenSSL
1099 is configured with 'enable-camellia'.
1102 *) Disable the padding bug check when compression is in use. The padding
1103 bug check assumes the first packet is of even length, this is not
1104 necessarily true if compresssion is enabled and can result in false
1105 positives causing handshake failure. The actual bug test is ancient
1106 code so it is hoped that implementations will either have fixed it by
1107 now or any which still have the bug do not support compression.
1110 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1112 *) When applying a cipher rule check to see if string match is an explicit
1113 cipher suite and only match that one cipher suite if it is.
1116 *) Link in manifests for VC++ if needed.
1117 [Austin Ziegler <halostatue@gmail.com>]
1119 *) Update support for ECC-based TLS ciphersuites according to
1120 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1121 TLS extensions, which are supported starting with the 0.9.9
1122 branch, not in the OpenSSL 0.9.8 branch).
1125 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1126 opaque EVP_CIPHER_CTX handling.
1129 *) Fixes and enhancements to zlib compression code. We now only use
1130 "zlib1.dll" and use the default __cdecl calling convention on Win32
1131 to conform with the standards mentioned here:
1132 http://www.zlib.net/DLL_FAQ.txt
1133 Static zlib linking now works on Windows and the new --with-zlib-include
1134 --with-zlib-lib options to Configure can be used to supply the location
1135 of the headers and library. Gracefully handle case where zlib library
1139 *) Several fixes and enhancements to the OID generation code. The old code
1140 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1141 handle numbers larger than ULONG_MAX, truncated printing and had a
1142 non standard OBJ_obj2txt() behaviour.
1145 *) Add support for building of engines under engine/ as shared libraries
1146 under VC++ build system.
1149 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1150 Hopefully, we will not see any false combination of paths any more.
1153 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1155 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1156 (part of SSL_OP_ALL). This option used to disable the
1157 countermeasure against man-in-the-middle protocol-version
1158 rollback in the SSL 2.0 server implementation, which is a bad
1159 idea. (CVE-2005-2969)
1161 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1162 for Information Security, National Institute of Advanced Industrial
1163 Science and Technology [AIST], Japan)]
1165 *) Add two function to clear and return the verify parameter flags.
1168 *) Keep cipherlists sorted in the source instead of sorting them at
1169 runtime, thus removing the need for a lock.
1172 *) Avoid some small subgroup attacks in Diffie-Hellman.
1173 [Nick Mathewson and Ben Laurie]
1175 *) Add functions for well-known primes.
1178 *) Extended Windows CE support.
1179 [Satoshi Nakamura and Andy Polyakov]
1181 *) Initialize SSL_METHOD structures at compile time instead of during
1182 runtime, thus removing the need for a lock.
1185 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1186 attempting to decrypt each encrypted key in turn. Add support to
1190 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1192 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1195 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1198 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1199 key into the same file any more.
1202 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1205 *) Add -utf8 command line and config file option to 'ca'.
1206 [Stefan <stf@udoma.org]
1208 *) Removed the macro des_crypt(), as it seems to conflict with some
1209 libraries. Use DES_crypt().
1212 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1213 involves renaming the source and generated shared-libs for
1214 both. The engines will accept the corrected or legacy ids
1215 ('ncipher' and '4758_cca' respectively) when binding. NB,
1216 this only applies when building 'shared'.
1217 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1219 *) Add attribute functions to EVP_PKEY structure. Modify
1220 PKCS12_create() to recognize a CSP name attribute and
1221 use it. Make -CSP option work again in pkcs12 utility.
1224 *) Add new functionality to the bn blinding code:
1225 - automatic re-creation of the BN_BLINDING parameters after
1226 a fixed number of uses (currently 32)
1227 - add new function for parameter creation
1228 - introduce flags to control the update behaviour of the
1229 BN_BLINDING parameters
1230 - hide BN_BLINDING structure
1231 Add a second BN_BLINDING slot to the RSA structure to improve
1232 performance when a single RSA object is shared among several
1236 *) Add support for DTLS.
1237 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1239 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1240 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1243 *) Remove buggy and incompletet DH cert support from
1244 ssl/ssl_rsa.c and ssl/s3_both.c
1247 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1248 the apps/openssl applications.
1251 *) Compile clean with "-Wall -Wmissing-prototypes
1252 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1253 DEBUG_SAFESTACK must also be set.
1256 *) Change ./Configure so that certain algorithms can be disabled by default.
1257 The new counterpiece to "no-xxx" is "enable-xxx".
1259 The patented RC5 and MDC2 algorithms will now be disabled unless
1260 "enable-rc5" and "enable-mdc2", respectively, are specified.
1262 (IDEA remains enabled despite being patented. This is because IDEA
1263 is frequently required for interoperability, and there is no license
1264 fee for non-commercial use. As before, "no-idea" can be used to
1265 avoid this algorithm.)
1269 *) Add processing of proxy certificates (see RFC 3820). This work was
1270 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1271 EGEE (Enabling Grids for E-science in Europe).
1274 *) RC4 performance overhaul on modern architectures/implementations, such
1275 as Intel P4, IA-64 and AMD64.
1278 *) New utility extract-section.pl. This can be used specify an alternative
1279 section number in a pod file instead of having to treat each file as
1280 a separate case in Makefile. This can be done by adding two lines to the
1283 =for comment openssl_section:XXX
1285 The blank line is mandatory.
1289 *) New arguments -certform, -keyform and -pass for s_client and s_server
1290 to allow alternative format key and certificate files and passphrase
1294 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1295 update associated structures and add various utility functions.
1297 Add new policy related verify parameters, include policy checking in
1298 standard verify code. Enhance 'smime' application with extra parameters
1299 to support policy checking and print out.
1302 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1303 Nehemiah processors. These extensions support AES encryption in hardware
1304 as well as RNG (though RNG support is currently disabled).
1305 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1307 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1310 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1311 [Andy Polyakov and a number of other people]
1313 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1314 implementation contributed by IBM.
1315 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1317 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1318 exponent rather than 'unsigned long'. There is a corresponding change to
1319 the new 'rsa_keygen' element of the RSA_METHOD structure.
1320 [Jelte Jansen, Geoff Thorpe]
1322 *) Functionality for creating the initial serial number file is now
1323 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1325 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1326 number file to 1, which is bound to cause problems. To avoid
1327 the problems while respecting compatibility between different 0.9.7
1328 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1329 CA.pl for serial number initialization. With the new release 0.9.8,
1330 we can fix the problem directly in the 'ca' utility.)
1333 *) Reduced header interdepencies by declaring more opaque objects in
1334 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1335 give fewer recursive includes, which could break lazy source code - so
1336 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1337 developers should define this symbol when building and using openssl to
1338 ensure they track the recommended behaviour, interfaces, [etc], but
1339 backwards-compatible behaviour prevails when this isn't defined.
1342 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1345 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1346 This will generate a random key of the appropriate length based on the
1347 cipher context. The EVP_CIPHER can provide its own random key generation
1348 routine to support keys of a specific form. This is used in the des and
1349 3des routines to generate a key of the correct parity. Update S/MIME
1350 code to use new functions and hence generate correct parity DES keys.
1351 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1352 valid (weak or incorrect parity).
1355 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1356 as looking them up. This is useful when the verified structure may contain
1357 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1358 present unless the new PKCS7_NO_CRL flag is asserted.
1361 *) Extend ASN1 oid configuration module. It now additionally accepts the
1364 shortName = some long name, 1.2.3.4
1367 *) Reimplemented the BN_CTX implementation. There is now no more static
1368 limitation on the number of variables it can handle nor the depth of the
1369 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1370 information can now expand as required, and rather than having a single
1371 static array of bignums, BN_CTX now uses a linked-list of such arrays
1372 allowing it to expand on demand whilst maintaining the usefulness of
1373 BN_CTX's "bundling".
1376 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1377 to allow all RSA operations to function using a single BN_CTX.
1380 *) Preliminary support for certificate policy evaluation and checking. This
1381 is initially intended to pass the tests outlined in "Conformance Testing
1382 of Relying Party Client Certificate Path Processing Logic" v1.07.
1385 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1386 remained unused and not that useful. A variety of other little bignum
1387 tweaks and fixes have also been made continuing on from the audit (see
1391 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1392 associated ASN1, EVP and SSL functions and old ASN1 macros.
1395 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1396 and this should never fail. So the return value from the use of
1397 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1398 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1401 *) BN_CTX_get() should return zero-valued bignums, providing the same
1402 initialised value as BN_new().
1403 [Geoff Thorpe, suggested by Ulf Möller]
1405 *) Support for inhibitAnyPolicy certificate extension.
1408 *) An audit of the BIGNUM code is underway, for which debugging code is
1409 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1410 is considered valid when processing BIGNUMs, and causes execution to
1411 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1412 further steps are taken to deliberately pollute unused data in BIGNUM
1413 structures to try and expose faulty code further on. For now, openssl will
1414 (in its default mode of operation) continue to tolerate the inconsistent
1415 forms that it has tolerated in the past, but authors and packagers should
1416 consider trying openssl and their own applications when compiled with
1417 these debugging symbols defined. It will help highlight potential bugs in
1418 their own code, and will improve the test coverage for OpenSSL itself. At
1419 some point, these tighter rules will become openssl's default to improve
1420 maintainability, though the assert()s and other overheads will remain only
1421 in debugging configurations. See bn.h for more details.
1422 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1424 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1425 that can only be obtained through BN_CTX_new() (which implicitly
1426 initialises it). The presence of this function only made it possible
1427 to overwrite an existing structure (and cause memory leaks).
1430 *) Because of the callback-based approach for implementing LHASH as a
1431 template type, lh_insert() adds opaque objects to hash-tables and
1432 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1433 to clean up those corresponding objects before destroying the hash table
1434 (and losing the object pointers). So some over-zealous constifications in
1435 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1436 objects as "const" and the lh_doall[_arg] callback wrappers are not
1437 prototyped to have "const" restrictions on the object pointers they are
1438 given (and so aren't required to cast them away any more).
1441 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1442 (speed) prefers to use its own implementation. The two implementations
1443 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1444 its object type properly exposed (MS_TM) instead of casting to/from "char
1445 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1446 aren't necessarily the greatest nomenclatures - but this is what was used
1447 internally to the implementation so I've used that for now.
1450 *) Ensure that deprecated functions do not get compiled when
1451 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1452 the self-tests were still using deprecated key-generation functions so
1453 these have been updated also.
1456 *) Reorganise PKCS#7 code to separate the digest location functionality
1457 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1458 New function PKCS7_set_digest() to set the digest type for PKCS#7
1459 digestedData type. Add additional code to correctly generate the
1460 digestedData type and add support for this type in PKCS7 initialization
1464 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1465 structure of type "other".
1468 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1469 sure the loop does correctly stop and breaking ("division by zero")
1470 modulus operations are not performed. The (pre-generated) prime
1471 table crypto/bn/bn_prime.h was already correct, but it could not be
1472 re-generated on some platforms because of the "division by zero"
1473 situation in the script.
1474 [Ralf S. Engelschall]
1476 *) Update support for ECC-based TLS ciphersuites according to
1477 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1478 SHA-1 now is only used for "small" curves (where the
1479 representation of a field element takes up to 24 bytes); for
1480 larger curves, the field element resulting from ECDH is directly
1481 used as premaster secret.
1482 [Douglas Stebila (Sun Microsystems Laboratories)]
1484 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1485 curve secp160r1 to the tests.
1486 [Douglas Stebila (Sun Microsystems Laboratories)]
1488 *) Add the possibility to load symbols globally with DSO.
1489 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1491 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1492 control of the error stack.
1495 *) Add support for STORE in ENGINE.
1498 *) Add the STORE type. The intention is to provide a common interface
1499 to certificate and key stores, be they simple file-based stores, or
1500 HSM-type store, or LDAP stores, or...
1501 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1504 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1505 pass a list of arguments to any function as well as provide a way
1506 for a function to pass data back to the caller.
1509 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1510 works like BUF_strdup() but can be used to duplicate a portion of
1511 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1515 *) Add the function sk_find_ex() which works like sk_find(), but will
1516 return an index to an element even if an exact match couldn't be
1517 found. The index is guaranteed to point at the element where the
1518 searched-for key would be inserted to preserve sorting order.
1521 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1522 takes an extra flags argument for optional functionality. Currently,
1523 the following flags are defined:
1525 OBJ_BSEARCH_VALUE_ON_NOMATCH
1526 This one gets OBJ_bsearch_ex() to return a pointer to the first
1527 element where the comparing function returns a negative or zero
1530 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1531 This one gets OBJ_bsearch_ex() to return a pointer to the first
1532 element where the comparing function returns zero. This is useful
1533 if there are more than one element where the comparing function
1537 *) Make it possible to create self-signed certificates with 'openssl ca'
1538 in such a way that the self-signed certificate becomes part of the
1539 CA database and uses the same mechanisms for serial number generation
1540 as all other certificate signing. The new flag '-selfsign' enables
1541 this functionality. Adapt CA.sh and CA.pl.in.
1544 *) Add functionality to check the public key of a certificate request
1545 against a given private. This is useful to check that a certificate
1546 request can be signed by that key (self-signing).
1549 *) Make it possible to have multiple active certificates with the same
1550 subject in the CA index file. This is done only if the keyword
1551 'unique_subject' is set to 'no' in the main CA section (default
1552 if 'CA_default') of the configuration file. The value is saved
1553 with the database itself in a separate index attribute file,
1554 named like the index file with '.attr' appended to the name.
1557 *) Generate muti valued AVAs using '+' notation in config files for
1561 *) Support for nameConstraints certificate extension.
1564 *) Support for policyConstraints certificate extension.
1567 *) Support for policyMappings certificate extension.
1570 *) Make sure the default DSA_METHOD implementation only uses its
1571 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1572 and change its own handlers to be NULL so as to remove unnecessary
1573 indirection. This lets alternative implementations fallback to the
1574 default implementation more easily.
1577 *) Support for directoryName in GeneralName related extensions
1581 *) Make it possible to link applications using Makefile.shared.
1582 Make that possible even when linking against static libraries!
1585 *) Support for single pass processing for S/MIME signing. This now
1586 means that S/MIME signing can be done from a pipe, in addition
1587 cleartext signing (multipart/signed type) is effectively streaming
1588 and the signed data does not need to be all held in memory.
1590 This is done with a new flag PKCS7_STREAM. When this flag is set
1591 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1592 is done after the data is output (and digests calculated) in
1593 SMIME_write_PKCS7().
1596 *) Add full support for -rpath/-R, both in shared libraries and
1597 applications, at least on the platforms where it's known how
1601 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1602 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1603 will now compute a table of multiples of the generator that
1604 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1605 faster (notably in the case of a single point multiplication,
1606 scalar * generator).
1607 [Nils Larsch, Bodo Moeller]
1609 *) IPv6 support for certificate extensions. The various extensions
1610 which use the IP:a.b.c.d can now take IPv6 addresses using the
1611 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1615 *) Added an ENGINE that implements RSA by performing private key
1616 exponentiations with the GMP library. The conversions to and from
1617 GMP's mpz_t format aren't optimised nor are any montgomery forms
1618 cached, and on x86 it appears OpenSSL's own performance has caught up.
1619 However there are likely to be other architectures where GMP could
1620 provide a boost. This ENGINE is not built in by default, but it can be
1621 specified at Configure time and should be accompanied by the necessary
1622 linker additions, eg;
1623 ./config -DOPENSSL_USE_GMP -lgmp
1626 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1627 testing availability of engines with "-t" - the old behaviour is
1628 produced by increasing the feature's verbosity with "-tt".
1631 *) ECDSA routines: under certain error conditions uninitialized BN objects
1632 could be freed. Solution: make sure initialization is performed early
1633 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1637 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1638 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1639 software implementations. For DSA and DH, parameter generation can
1640 also be overriden by providing the appropriate method callbacks.
1643 *) Change the "progress" mechanism used in key-generation and
1644 primality testing to functions that take a new BN_GENCB pointer in
1645 place of callback/argument pairs. The new API functions have "_ex"
1646 postfixes and the older functions are reimplemented as wrappers for
1647 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1648 declarations of the old functions to help (graceful) attempts to
1649 migrate to the new functions. Also, the new key-generation API
1650 functions operate on a caller-supplied key-structure and return
1651 success/failure rather than returning a key or NULL - this is to
1652 help make "keygen" another member function of RSA_METHOD etc.
1654 Example for using the new callback interface:
1656 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1660 BN_GENCB_set(&my_cb, my_callback, my_arg);
1662 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1663 /* For the meaning of a, b in calls to my_callback(), see the
1664 * documentation of the function that calls the callback.
1665 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1666 * my_callback should return 1 if it wants BN_is_prime_ex()
1667 * to continue, or 0 to stop.
1672 *) Change the ZLIB compression method to be stateful, and make it
1673 available to TLS with the number defined in
1674 draft-ietf-tls-compression-04.txt.
1677 *) Add the ASN.1 structures and functions for CertificatePair, which
1678 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1680 CertificatePair ::= SEQUENCE {
1681 forward [0] Certificate OPTIONAL,
1682 reverse [1] Certificate OPTIONAL,
1683 -- at least one of the pair shall be present -- }
1685 Also implement the PEM functions to read and write certificate
1686 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1688 This needed to be defined, mostly for the sake of the LDAP
1689 attribute crossCertificatePair, but may prove useful elsewhere as
1693 *) Make it possible to inhibit symlinking of shared libraries in
1694 Makefile.shared, for Cygwin's sake.
1697 *) Extend the BIGNUM API by creating a function
1698 void BN_set_negative(BIGNUM *a, int neg);
1699 and a macro that behave like
1700 int BN_is_negative(const BIGNUM *a);
1702 to avoid the need to access 'a->neg' directly in applications.
1705 *) Implement fast modular reduction for pseudo-Mersenne primes
1706 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1707 EC_GROUP_new_curve_GFp() will now automatically use this
1709 [Nils Larsch <nla@trustcenter.de>]
1711 *) Add new lock type (CRYPTO_LOCK_BN).
1714 *) Change the ENGINE framework to automatically load engines
1715 dynamically from specific directories unless they could be
1716 found to already be built in or loaded. Move all the
1717 current engines except for the cryptodev one to a new
1719 The engines in engines/ are built as shared libraries if
1720 the "shared" options was given to ./Configure or ./config.
1721 Otherwise, they are inserted in libcrypto.a.
1722 /usr/local/ssl/engines is the default directory for dynamic
1723 engines, but that can be overriden at configure time through
1724 the usual use of --prefix and/or --openssldir, and at run
1725 time with the environment variable OPENSSL_ENGINES.
1726 [Geoff Thorpe and Richard Levitte]
1728 *) Add Makefile.shared, a helper makefile to build shared
1729 libraries. Addapt Makefile.org.
1732 *) Add version info to Win32 DLLs.
1733 [Peter 'Luna' Runestig" <peter@runestig.com>]
1735 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1736 can be added using this API to created arbitrary PKCS#12
1737 files while avoiding the low level API.
1739 New options to PKCS12_create(), key or cert can be NULL and
1740 will then be omitted from the output file. The encryption
1741 algorithm NIDs can be set to -1 for no encryption, the mac
1742 iteration count can be set to 0 to omit the mac.
1744 Enhance pkcs12 utility by making the -nokeys and -nocerts
1745 options work when creating a PKCS#12 file. New option -nomac
1746 to omit the mac, NONE can be set for an encryption algorithm.
1747 New code is modified to use the enhanced PKCS12_create()
1748 instead of the low level API.
1751 *) Extend ASN1 encoder to support indefinite length constructed
1752 encoding. This can output sequences tags and octet strings in
1753 this form. Modify pk7_asn1.c to support indefinite length
1754 encoding. This is experimental and needs additional code to
1755 be useful, such as an ASN1 bio and some enhanced streaming
1758 Extend template encode functionality so that tagging is passed
1759 down to the template encoder.
1762 *) Let 'openssl req' fail if an argument to '-newkey' is not
1763 recognized instead of using RSA as a default.
1766 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1767 As these are not official, they are not included in "ALL";
1768 the "ECCdraft" ciphersuite group alias can be used to select them.
1769 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1771 *) Add ECDH engine support.
1772 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1774 *) Add ECDH in new directory crypto/ecdh/.
1775 [Douglas Stebila (Sun Microsystems Laboratories)]
1777 *) Let BN_rand_range() abort with an error after 100 iterations
1778 without success (which indicates a broken PRNG).
1781 *) Change BN_mod_sqrt() so that it verifies that the input value
1782 is really the square of the return value. (Previously,
1783 BN_mod_sqrt would show GIGO behaviour.)
1786 *) Add named elliptic curves over binary fields from X9.62, SECG,
1787 and WAP/WTLS; add OIDs that were still missing.
1789 [Sheueling Chang Shantz and Douglas Stebila
1790 (Sun Microsystems Laboratories)]
1792 *) Extend the EC library for elliptic curves over binary fields
1793 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1796 EC_GF2m_simple_method
1800 EC_GROUP_new_curve_GF2m
1801 EC_GROUP_set_curve_GF2m
1802 EC_GROUP_get_curve_GF2m
1803 EC_POINT_set_affine_coordinates_GF2m
1804 EC_POINT_get_affine_coordinates_GF2m
1805 EC_POINT_set_compressed_coordinates_GF2m
1807 Point compression for binary fields is disabled by default for
1808 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1811 As binary polynomials are represented as BIGNUMs, various members
1812 of the EC_GROUP and EC_POINT data structures can be shared
1813 between the implementations for prime fields and binary fields;
1814 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1815 are essentially identical to their ..._GFp counterparts.
1816 (For simplicity, the '..._GFp' prefix has been dropped from
1817 various internal method names.)
1819 An internal 'field_div' method (similar to 'field_mul' and
1820 'field_sqr') has been added; this is used only for binary fields.
1822 [Sheueling Chang Shantz and Douglas Stebila
1823 (Sun Microsystems Laboratories)]
1825 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1826 through methods ('mul', 'precompute_mult').
1828 The generic implementations (now internally called 'ec_wNAF_mul'
1829 and 'ec_wNAF_precomputed_mult') remain the default if these
1830 methods are undefined.
1832 [Sheueling Chang Shantz and Douglas Stebila
1833 (Sun Microsystems Laboratories)]
1835 *) New function EC_GROUP_get_degree, which is defined through
1836 EC_METHOD. For curves over prime fields, this returns the bit
1837 length of the modulus.
1839 [Sheueling Chang Shantz and Douglas Stebila
1840 (Sun Microsystems Laboratories)]
1842 *) New functions EC_GROUP_dup, EC_POINT_dup.
1843 (These simply call ..._new and ..._copy).
1845 [Sheueling Chang Shantz and Douglas Stebila
1846 (Sun Microsystems Laboratories)]
1848 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1849 Polynomials are represented as BIGNUMs (where the sign bit is not
1850 used) in the following functions [macros]:
1853 BN_GF2m_sub [= BN_GF2m_add]
1854 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1855 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1856 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1858 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1859 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1860 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1861 BN_GF2m_cmp [= BN_ucmp]
1863 (Note that only the 'mod' functions are actually for fields GF(2^m).
1864 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1866 For some functions, an the irreducible polynomial defining a
1867 field can be given as an 'unsigned int[]' with strictly
1868 decreasing elements giving the indices of those bits that are set;
1869 i.e., p[] represents the polynomial
1870 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1872 p[0] > p[1] > ... > p[k] = 0.
1873 This applies to the following functions:
1878 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1879 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1881 BN_GF2m_mod_sqrt_arr
1882 BN_GF2m_mod_solve_quad_arr
1886 Conversion can be performed by the following functions:
1891 bntest.c has additional tests for binary polynomial arithmetic.
1893 Two implementations for BN_GF2m_mod_div() are available.
1894 The default algorithm simply uses BN_GF2m_mod_inv() and
1895 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1896 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1897 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1899 [Sheueling Chang Shantz and Douglas Stebila
1900 (Sun Microsystems Laboratories)]
1902 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1903 functionality is disabled at compile-time.
1904 [Douglas Stebila <douglas.stebila@sun.com>]
1906 *) Change default behaviour of 'openssl asn1parse' so that more
1907 information is visible when viewing, e.g., a certificate:
1909 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1910 mode the content of non-printable OCTET STRINGs is output in a
1911 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1912 avoid the appearance of a printable string.
1913 [Nils Larsch <nla@trustcenter.de>]
1915 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1917 EC_GROUP_set_asn1_flag()
1918 EC_GROUP_get_asn1_flag()
1919 EC_GROUP_set_point_conversion_form()
1920 EC_GROUP_get_point_conversion_form()
1921 These control ASN1 encoding details:
1922 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1923 has been set to OPENSSL_EC_NAMED_CURVE.
1924 - Points are encoded in uncompressed form by default; options for
1925 asn1_for are as for point2oct, namely
1926 POINT_CONVERSION_COMPRESSED
1927 POINT_CONVERSION_UNCOMPRESSED
1928 POINT_CONVERSION_HYBRID
1930 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1933 EC_GROUP_get0_seed()
1934 EC_GROUP_get_seed_len()
1935 This is used only for ASN1 purposes (so far).
1936 [Nils Larsch <nla@trustcenter.de>]
1938 *) Add 'field_type' member to EC_METHOD, which holds the NID
1939 of the appropriate field type OID. The new function
1940 EC_METHOD_get_field_type() returns this value.
1941 [Nils Larsch <nla@trustcenter.de>]
1946 EC_POINT_point2hex()
1947 EC_POINT_hex2point()
1948 providing useful interfaces to EC_POINT_point2oct() and
1949 EC_POINT_oct2point().
1950 [Nils Larsch <nla@trustcenter.de>]
1952 *) Change internals of the EC library so that the functions
1953 EC_GROUP_set_generator()
1954 EC_GROUP_get_generator()
1955 EC_GROUP_get_order()
1956 EC_GROUP_get_cofactor()
1957 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1958 to methods, which would lead to unnecessary code duplication when
1959 adding different types of curves.
1960 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1962 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1963 arithmetic, and such that modified wNAFs are generated
1964 (which avoid length expansion in many cases).
1967 *) Add a function EC_GROUP_check_discriminant() (defined via
1968 EC_METHOD) that verifies that the curve discriminant is non-zero.
1970 Add a function EC_GROUP_check() that makes some sanity tests
1971 on a EC_GROUP, its generator and order. This includes
1972 EC_GROUP_check_discriminant().
1973 [Nils Larsch <nla@trustcenter.de>]
1975 *) Add ECDSA in new directory crypto/ecdsa/.
1977 Add applications 'openssl ecparam' and 'openssl ecdsa'
1978 (these are based on 'openssl dsaparam' and 'openssl dsa').
1980 ECDSA support is also included in various other files across the
1981 library. Most notably,
1982 - 'openssl req' now has a '-newkey ecdsa:file' option;
1983 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1984 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1985 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1986 them suitable for ECDSA where domain parameters must be
1987 extracted before the specific public key;
1988 - ECDSA engine support has been added.
1989 [Nils Larsch <nla@trustcenter.de>]
1991 *) Include some named elliptic curves, and add OIDs from X9.62,
1992 SECG, and WAP/WTLS. Each curve can be obtained from the new
1994 EC_GROUP_new_by_curve_name(),
1995 and the list of available named curves can be obtained with
1996 EC_get_builtin_curves().
1997 Also add a 'curve_name' member to EC_GROUP objects, which can be
1999 EC_GROUP_set_curve_name()
2000 EC_GROUP_get_curve_name()
2001 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2003 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2004 was actually never needed) and in BN_mul(). The removal in BN_mul()
2005 required a small change in bn_mul_part_recursive() and the addition
2006 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2007 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2008 bn_sub_words() and bn_add_words() except they take arrays with
2012 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2014 *) Cleanse PEM buffers before freeing them since they may contain
2016 [Benjamin Bennett <ben@psc.edu>]
2018 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2019 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2020 authentication-only ciphersuites.
2023 *) Since AES128 and AES256 share a single mask bit in the logic of
2024 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2025 kludge to work properly if AES128 is available and AES256 isn't.
2028 *) Expand security boundary to match 1.1.1 module.
2031 *) Remove redundant features: hash file source, editing of test vectors
2032 modify fipsld to use external fips_premain.c signature.
2035 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2036 run algorithm test programs.
2039 *) Make algorithm test programs more tolerant of whitespace.
2042 *) Have SSL/TLS server implementation tolerate "mismatched" record
2043 protocol version while receiving ClientHello even if the
2044 ClientHello is fragmented. (The server can't insist on the
2045 particular protocol version it has chosen before the ServerHello
2046 message has informed the client about his choice.)
2049 *) Load error codes if they are not already present instead of using a
2050 static variable. This allows them to be cleanly unloaded and reloaded.
2053 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2055 *) Introduce limits to prevent malicious keys being able to
2056 cause a denial of service. (CVE-2006-2940)
2057 [Steve Henson, Bodo Moeller]
2059 *) Fix ASN.1 parsing of certain invalid structures that can result
2060 in a denial of service. (CVE-2006-2937) [Steve Henson]
2062 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2063 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2065 *) Fix SSL client code which could crash if connecting to a
2066 malicious SSLv2 server. (CVE-2006-4343)
2067 [Tavis Ormandy and Will Drewry, Google Security Team]
2069 *) Change ciphersuite string processing so that an explicit
2070 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2071 will no longer include "AES128-SHA"), and any other similar
2072 ciphersuite (same bitmap) from *other* protocol versions (so that
2073 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2074 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2075 changes from 0.9.8b and 0.9.8d.
2078 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2080 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2081 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2083 *) Change the Unix randomness entropy gathering to use poll() when
2084 possible instead of select(), since the latter has some
2085 undesirable limitations.
2086 [Darryl Miles via Richard Levitte and Bodo Moeller]
2088 *) Disable rogue ciphersuites:
2090 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2091 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2092 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2094 The latter two were purportedly from
2095 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2098 Also deactive the remaining ciphersuites from
2099 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2100 unofficial, and the ID has long expired.
2103 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2104 dual-core machines) and other potential thread-safety issues.
2107 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2109 *) Adapt fipsld and the build system to link against the validated FIPS
2110 module in FIPS mode.
2113 *) Fixes for VC++ 2005 build under Windows.
2116 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2117 from a Windows bash shell such as MSYS. It is autodetected from the
2118 "config" script when run from a VC++ environment. Modify standard VC++
2119 build to use fipscanister.o from the GNU make build.
2122 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2124 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2125 The value now differs depending on if you build for FIPS or not.
2126 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2127 safely run with a non-FIPSed libcrypto, as it may crash because of
2128 the difference induced by this change.
2131 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2133 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2134 (part of SSL_OP_ALL). This option used to disable the
2135 countermeasure against man-in-the-middle protocol-version
2136 rollback in the SSL 2.0 server implementation, which is a bad
2137 idea. (CVE-2005-2969)
2139 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2140 for Information Security, National Institute of Advanced Industrial
2141 Science and Technology [AIST], Japan)]
2143 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2144 mainly for FIPS compliance and not fully integrated at this stage.
2147 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2148 the exponentiation using a fixed-length exponent. (Otherwise,
2149 the information leaked through timing could expose the secret key
2150 after many signatures; cf. Bleichenbacher's attack on DSA with
2154 *) Make a new fixed-window mod_exp implementation the default for
2155 RSA, DSA, and DH private-key operations so that the sequence of
2156 squares and multiplies and the memory access pattern are
2157 independent of the particular secret key. This will mitigate
2158 cache-timing and potential related attacks.
2160 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2161 and this is automatically used by BN_mod_exp_mont() if the new flag
2162 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2163 will use this BN flag for private exponents unless the flag
2164 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2165 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2167 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2169 *) Change the client implementation for SSLv23_method() and
2170 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2171 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2172 (Previously, the SSL 2.0 backwards compatible Client Hello
2173 message format would be used even with SSL_OP_NO_SSLv2.)
2176 *) Add support for smime-type MIME parameter in S/MIME messages which some
2180 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2181 a threadsafe manner. Modify rsa code to use new function and add calls
2182 to dsa and dh code (which had race conditions before).
2185 *) Include the fixed error library code in the C error file definitions
2186 instead of fixing them up at runtime. This keeps the error code
2187 structures constant.
2190 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2192 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2195 *) Fixes for newer kerberos headers. NB: the casts are needed because
2196 the 'length' field is signed on one version and unsigned on another
2197 with no (?) obvious way to tell the difference, without these VC++
2198 complains. Also the "definition" of FAR (blank) is no longer included
2199 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2200 some needed definitions.
2203 *) Undo Cygwin change.
2206 *) Added support for proxy certificates according to RFC 3820.
2207 Because they may be a security thread to unaware applications,
2208 they must be explicitely allowed in run-time. See
2209 docs/HOWTO/proxy_certificates.txt for further information.
2212 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2214 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2215 server and client random values. Previously
2216 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2217 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2219 This change has negligible security impact because:
2221 1. Server and client random values still have 24 bytes of pseudo random
2224 2. Server and client random values are sent in the clear in the initial
2227 3. The master secret is derived using the premaster secret (48 bytes in
2228 size for static RSA ciphersuites) as well as client server and random
2231 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2234 [Stephen Henson, reported by UK NISCC]
2236 *) Use Windows randomness collection on Cygwin.
2239 *) Fix hang in EGD/PRNGD query when communication socket is closed
2240 prematurely by EGD/PRNGD.
2241 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2243 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2246 *) Back-port of selected performance improvements from development
2247 branch, as well as improved support for PowerPC platforms.
2250 *) Add lots of checks for memory allocation failure, error codes to indicate
2251 failure and freeing up memory if a failure occurs.
2252 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2254 *) Add new -passin argument to dgst.
2257 *) Perform some character comparisons of different types in X509_NAME_cmp:
2258 this is needed for some certificates that reencode DNs into UTF8Strings
2259 (in violation of RFC3280) and can't or wont issue name rollover
2263 *) Make an explicit check during certificate validation to see that
2264 the CA setting in each certificate on the chain is correct. As a
2265 side effect always do the following basic checks on extensions,
2266 not just when there's an associated purpose to the check:
2268 - if there is an unhandled critical extension (unless the user
2269 has chosen to ignore this fault)
2270 - if the path length has been exceeded (if one is set at all)
2271 - that certain extensions fit the associated purpose (if one has
2275 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2277 *) Avoid a race condition when CRLs are checked in a multi threaded
2278 environment. This would happen due to the reordering of the revoked
2279 entries during signature checking and serial number lookup. Now the
2280 encoding is cached and the serial number sort performed under a lock.
2281 Add new STACK function sk_is_sorted().
2284 *) Add Delta CRL to the extension code.
2287 *) Various fixes to s3_pkt.c so alerts are sent properly.
2288 [David Holmes <d.holmes@f5.com>]
2290 *) Reduce the chances of duplicate issuer name and serial numbers (in
2291 violation of RFC3280) using the OpenSSL certificate creation utilities.
2292 This is done by creating a random 64 bit value for the initial serial
2293 number when a serial number file is created or when a self signed
2294 certificate is created using 'openssl req -x509'. The initial serial
2295 number file is created using 'openssl x509 -next_serial' in CA.pl
2296 rather than being initialized to 1.
2299 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2301 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2302 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2303 [Joe Orton, Steve Henson]
2305 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2307 [Joe Orton, Steve Henson]
2309 *) Make it possible to have multiple active certificates with the same
2310 subject in the CA index file. This is done only if the keyword
2311 'unique_subject' is set to 'no' in the main CA section (default
2312 if 'CA_default') of the configuration file. The value is saved
2313 with the database itself in a separate index attribute file,
2314 named like the index file with '.attr' appended to the name.
2317 *) X509 verify fixes. Disable broken certificate workarounds when
2318 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2319 keyUsage extension present. Don't accept CRLs with unhandled critical
2320 extensions: since verify currently doesn't process CRL extensions this
2321 rejects a CRL with *any* critical extensions. Add new verify error codes
2325 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2326 A clarification of RFC2560 will require the use of OCTET STRINGs and
2327 some implementations cannot handle the current raw format. Since OpenSSL
2328 copies and compares OCSP nonces as opaque blobs without any attempt at
2329 parsing them this should not create any compatibility issues.
2332 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2333 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2334 this HMAC (and other) operations are several times slower than OpenSSL
2338 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2339 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2341 *) Use the correct content when signing type "other".
2344 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2346 *) Fix various bugs revealed by running the NISCC test suite:
2348 Stop out of bounds reads in the ASN1 code when presented with
2349 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2351 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2353 If verify callback ignores invalid public key errors don't try to check
2354 certificate signature with the NULL public key.
2358 *) New -ignore_err option in ocsp application to stop the server
2359 exiting on the first error in a request.
2362 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2363 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2367 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2368 extra data after the compression methods not only for TLS 1.0
2369 but also for SSL 3.0 (as required by the specification).
2370 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2372 *) Change X509_certificate_type() to mark the key as exported/exportable
2373 when it's 512 *bits* long, not 512 bytes.
2376 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2377 blocks during encryption.
2380 *) Various fixes to base64 BIO and non blocking I/O. On write
2381 flushes were not handled properly if the BIO retried. On read
2382 data was not being buffered properly and had various logic bugs.
2383 This also affects blocking I/O when the data being decoded is a
2387 *) Various S/MIME bugfixes and compatibility changes:
2388 output correct application/pkcs7 MIME type if
2389 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2390 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2391 of files as .eml work). Correctly handle very long lines in MIME
2395 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2397 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2398 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2399 a protocol version number mismatch like a decryption error
2400 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2403 *) Turn on RSA blinding by default in the default implementation
2404 to avoid a timing attack. Applications that don't want it can call
2405 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2406 They would be ill-advised to do so in most cases.
2407 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2409 *) Change RSA blinding code so that it works when the PRNG is not
2410 seeded (in this case, the secret RSA exponent is abused as
2411 an unpredictable seed -- if it is not unpredictable, there
2412 is no point in blinding anyway). Make RSA blinding thread-safe
2413 by remembering the creator's thread ID in rsa->blinding and
2414 having all other threads use local one-time blinding factors
2415 (this requires more computation than sharing rsa->blinding, but
2416 avoids excessive locking; and if an RSA object is not shared
2417 between threads, blinding will still be very fast).
2420 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2421 ENGINE as defaults for all supported algorithms irrespective of
2422 the 'flags' parameter. 'flags' is now honoured, so applications
2423 should make sure they are passing it correctly.
2426 *) Target "mingw" now allows native Windows code to be generated in
2427 the Cygwin environment as well as with the MinGW compiler.
2430 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2432 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2433 via timing by performing a MAC computation even if incorrrect
2434 block cipher padding has been found. This is a countermeasure
2435 against active attacks where the attacker has to distinguish
2436 between bad padding and a MAC verification error. (CVE-2003-0078)
2438 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2439 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2440 Martin Vuagnoux (EPFL, Ilion)]
2442 *) Make the no-err option work as intended. The intention with no-err
2443 is not to have the whole error stack handling routines removed from
2444 libcrypto, it's only intended to remove all the function name and
2445 reason texts, thereby removing some of the footprint that may not
2446 be interesting if those errors aren't displayed anyway.
2448 NOTE: it's still possible for any application or module to have it's
2449 own set of error texts inserted. The routines are there, just not
2450 used by default when no-err is given.
2453 *) Add support for FreeBSD on IA64.
2454 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2456 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2457 Kerberos function mit_des_cbc_cksum(). Before this change,
2458 the value returned by DES_cbc_cksum() was like the one from
2459 mit_des_cbc_cksum(), except the bytes were swapped.
2460 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2462 *) Allow an application to disable the automatic SSL chain building.
2463 Before this a rather primitive chain build was always performed in
2464 ssl3_output_cert_chain(): an application had no way to send the
2465 correct chain if the automatic operation produced an incorrect result.
2467 Now the chain builder is disabled if either:
2469 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2471 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2473 The reasoning behind this is that an application would not want the
2474 auto chain building to take place if extra chain certificates are
2475 present and it might also want a means of sending no additional
2476 certificates (for example the chain has two certificates and the
2480 *) Add the possibility to build without the ENGINE framework.
2481 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2483 *) Under Win32 gmtime() can return NULL: check return value in
2484 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2487 *) DSA routines: under certain error conditions uninitialized BN objects
2488 could be freed. Solution: make sure initialization is performed early
2489 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2490 Nils Larsch <nla@trustcenter.de> via PR#459)
2493 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2494 checked on reconnect on the client side, therefore session resumption
2495 could still fail with a "ssl session id is different" error. This
2496 behaviour is masked when SSL_OP_ALL is used due to
2497 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2498 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2499 followup to PR #377.
2502 *) IA-32 assembler support enhancements: unified ELF targets, support
2503 for SCO/Caldera platforms, fix for Cygwin shared build.
2506 *) Add support for FreeBSD on sparc64. As a consequence, support for
2507 FreeBSD on non-x86 processors is separate from x86 processors on
2508 the config script, much like the NetBSD support.
2509 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2511 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2513 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2516 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2517 code (06) was taken as the first octet of the session ID and the last
2518 octet was ignored consequently. As a result SSLv2 client side session
2519 caching could not have worked due to the session ID mismatch between
2521 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2525 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2526 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2530 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2531 seems that in spite of existing for more than a year, many application
2532 author have done nothing to provide the necessary callbacks, which
2533 means that this particular engine will not work properly anywhere.
2534 This is a very unfortunate situation which forces us, in the name
2535 of usability, to give the hw_ncipher.c a static lock, which is part
2537 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2538 appear in 0.9.8 or later. We EXPECT application authors to have
2539 dealt properly with this when 0.9.8 is released (unless we actually
2540 make such changes in the libcrypto locking code that changes will
2541 have to be made anyway).
2544 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2545 octets have been read, EOF or an error occurs. Without this change
2546 some truncated ASN1 structures will not produce an error.
2549 *) Disable Heimdal support, since it hasn't been fully implemented.
2550 Still give the possibility to force the use of Heimdal, but with
2551 warnings and a request that patches get sent to openssl-dev.
2554 *) Add the VC-CE target, introduce the WINCE sysname, and add
2555 INSTALL.WCE and appropriate conditionals to make it build.
2556 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2558 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2559 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2560 edit numbers of the version.
2561 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2563 *) Introduce safe string copy and catenation functions
2564 (BUF_strlcpy() and BUF_strlcat()).
2565 [Ben Laurie (CHATS) and Richard Levitte]
2567 *) Avoid using fixed-size buffers for one-line DNs.
2568 [Ben Laurie (CHATS)]
2570 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2571 resizing buffers containing secrets, and use where appropriate.
2572 [Ben Laurie (CHATS)]
2574 *) Avoid using fixed size buffers for configuration file location.
2575 [Ben Laurie (CHATS)]
2577 *) Avoid filename truncation for various CA files.
2578 [Ben Laurie (CHATS)]
2580 *) Use sizeof in preference to magic numbers.
2581 [Ben Laurie (CHATS)]
2583 *) Avoid filename truncation in cert requests.
2584 [Ben Laurie (CHATS)]
2586 *) Add assertions to check for (supposedly impossible) buffer
2588 [Ben Laurie (CHATS)]
2590 *) Don't cache truncated DNS entries in the local cache (this could
2591 potentially lead to a spoofing attack).
2592 [Ben Laurie (CHATS)]
2594 *) Fix various buffers to be large enough for hex/decimal
2595 representations in a platform independent manner.
2596 [Ben Laurie (CHATS)]
2598 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2599 resizing buffers containing secrets, and use where appropriate.
2600 [Ben Laurie (CHATS)]
2602 *) Add BIO_indent() to avoid much slightly worrying code to do
2604 [Ben Laurie (CHATS)]
2606 *) Convert sprintf()/BIO_puts() to BIO_printf().
2607 [Ben Laurie (CHATS)]
2609 *) buffer_gets() could terminate with the buffer only half
2611 [Ben Laurie (CHATS)]
2613 *) Add assertions to prevent user-supplied crypto functions from
2614 overflowing internal buffers by having large block sizes, etc.
2615 [Ben Laurie (CHATS)]
2617 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2619 [Ben Laurie (CHATS)]
2621 *) Eliminate unused copy of key in RC4.
2622 [Ben Laurie (CHATS)]
2624 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2625 [Ben Laurie (CHATS)]
2627 *) Fix off-by-one error in EGD path.
2628 [Ben Laurie (CHATS)]
2630 *) If RANDFILE path is too long, ignore instead of truncating.
2631 [Ben Laurie (CHATS)]
2633 *) Eliminate unused and incorrectly sized X.509 structure
2635 [Ben Laurie (CHATS)]
2637 *) Eliminate unused and dangerous function knumber().
2638 [Ben Laurie (CHATS)]
2640 *) Eliminate unused and dangerous structure, KSSL_ERR.
2641 [Ben Laurie (CHATS)]
2643 *) Protect against overlong session ID context length in an encoded
2644 session object. Since these are local, this does not appear to be
2646 [Ben Laurie (CHATS)]
2648 *) Change from security patch (see 0.9.6e below) that did not affect
2649 the 0.9.6 release series:
2651 Remote buffer overflow in SSL3 protocol - an attacker could
2652 supply an oversized master key in Kerberos-enabled versions.
2654 [Ben Laurie (CHATS)]
2656 *) Change the SSL kerb5 codes to match RFC 2712.
2659 *) Make -nameopt work fully for req and add -reqopt switch.
2660 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2662 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2663 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2665 *) Make sure tests can be performed even if the corresponding algorithms
2666 have been removed entirely. This was also the last step to make
2667 OpenSSL compilable with DJGPP under all reasonable conditions.
2668 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2670 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2671 to allow version independent disabling of normally unselected ciphers,
2672 which may be activated as a side-effect of selecting a single cipher.
2674 (E.g., cipher list string "RSA" enables ciphersuites that are left
2675 out of "ALL" because they do not provide symmetric encryption.
2676 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2677 [Lutz Jaenicke, Bodo Moeller]
2679 *) Add appropriate support for separate platform-dependent build
2680 directories. The recommended way to make a platform-dependent
2681 build directory is the following (tested on Linux), maybe with
2684 # Place yourself outside of the OpenSSL source tree. In
2685 # this example, the environment variable OPENSSL_SOURCE
2686 # is assumed to contain the absolute OpenSSL source directory.
2687 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2688 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2689 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2690 mkdir -p `dirname $F`
2691 ln -s $OPENSSL_SOURCE/$F $F
2694 To be absolutely sure not to disturb the source tree, a "make clean"
2695 is a good thing. If it isn't successfull, don't worry about it,
2696 it probably means the source directory is very clean.
2699 *) Make sure any ENGINE control commands make local copies of string
2700 pointers passed to them whenever necessary. Otherwise it is possible
2701 the caller may have overwritten (or deallocated) the original string
2702 data when a later ENGINE operation tries to use the stored values.
2703 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2705 *) Improve diagnostics in file reading and command-line digests.
2706 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2708 *) Add AES modes CFB and OFB to the object database. Correct an
2709 error in AES-CFB decryption.
2712 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2713 allows existing EVP_CIPHER_CTX structures to be reused after
2714 calling EVP_*Final(). This behaviour is used by encryption
2715 BIOs and some applications. This has the side effect that
2716 applications must explicitly clean up cipher contexts with
2717 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2720 *) Check the values of dna and dnb in bn_mul_recursive before calling
2721 bn_mul_comba (a non zero value means the a or b arrays do not contain
2722 n2 elements) and fallback to bn_mul_normal if either is not zero.
2725 *) Fix escaping of non-ASCII characters when using the -subj option
2726 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2729 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2730 form for "surname", serialNumber has no short form.
2731 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2732 therefore remove "mail" short name for "internet 7".
2733 The OID for unique identifiers in X509 certificates is
2734 x500UniqueIdentifier, not uniqueIdentifier.
2735 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2738 *) Add an "init" command to the ENGINE config module and auto initialize
2739 ENGINEs. Without any "init" command the ENGINE will be initialized
2740 after all ctrl commands have been executed on it. If init=1 the
2741 ENGINE is initailized at that point (ctrls before that point are run
2742 on the uninitialized ENGINE and after on the initialized one). If
2743 init=0 then the ENGINE will not be iniatialized at all.
2746 *) Fix the 'app_verify_callback' interface so that the user-defined
2747 argument is actually passed to the callback: In the
2748 SSL_CTX_set_cert_verify_callback() prototype, the callback
2749 declaration has been changed from
2752 int (*cb)(X509_STORE_CTX *,void *);
2753 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2754 i=s->ctx->app_verify_callback(&ctx)
2755 has been changed into
2756 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2758 To update applications using SSL_CTX_set_cert_verify_callback(),
2759 a dummy argument can be added to their callback functions.
2760 [D. K. Smetters <smetters@parc.xerox.com>]
2762 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2763 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2765 *) Add and OPENSSL_LOAD_CONF define which will cause
2766 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2767 This allows older applications to transparently support certain
2768 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2769 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2770 load the config file and OPENSSL_add_all_algorithms_conf() which will
2771 always load it have also been added.
2774 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2775 Adjust NIDs and EVP layer.
2776 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2778 *) Config modules support in openssl utility.
2780 Most commands now load modules from the config file,
2781 though in a few (such as version) this isn't done
2782 because it couldn't be used for anything.
2784 In the case of ca and req the config file used is
2785 the same as the utility itself: that is the -config
2786 command line option can be used to specify an
2790 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2791 use "openssl_conf" if filename is NULL use default openssl config file.
2794 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2795 config section name. Add a new flag to tolerate a missing config file
2796 and move code to CONF_modules_load_file().
2799 *) Support for crypto accelerator cards from Accelerated Encryption
2800 Processing, www.aep.ie. (Use engine 'aep')
2801 The support was copied from 0.9.6c [engine] and adapted/corrected
2802 to work with the new engine framework.
2803 [AEP Inc. and Richard Levitte]
2805 *) Support for SureWare crypto accelerator cards from Baltimore
2806 Technologies. (Use engine 'sureware')
2807 The support was copied from 0.9.6c [engine] and adapted
2808 to work with the new engine framework.
2811 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2812 make the newer ENGINE framework commands for the CHIL engine work.
2813 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2815 *) Make it possible to produce shared libraries on ReliantUNIX.
2816 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2818 *) Add the configuration target debug-linux-ppro.
2819 Make 'openssl rsa' use the general key loading routines
2820 implemented in apps.c, and make those routines able to
2821 handle the key format FORMAT_NETSCAPE and the variant
2823 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2825 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2826 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2828 *) Add -keyform to rsautl, and document -engine.
2829 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2831 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2832 BIO_R_NO_SUCH_FILE error code rather than the generic
2833 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2836 *) Add new functions
2838 ERR_peek_last_error_line
2839 ERR_peek_last_error_line_data.
2840 These are similar to
2843 ERR_peek_error_line_data,
2844 but report on the latest error recorded rather than the first one
2845 still in the error queue.
2846 [Ben Laurie, Bodo Moeller]
2848 *) default_algorithms option in ENGINE config module. This allows things
2850 default_algorithms = ALL
2851 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2854 *) Prelminary ENGINE config module.
2857 *) New experimental application configuration code.
2860 *) Change the AES code to follow the same name structure as all other
2861 symmetric ciphers, and behave the same way. Move everything to
2862 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2863 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2865 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2866 [Ben Laurie and Theo de Raadt]
2868 *) Add option to output public keys in req command.
2869 [Massimiliano Pala madwolf@openca.org]
2871 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2872 (up to about 10% better than before for P-192 and P-224).
2875 *) New functions/macros
2877 SSL_CTX_set_msg_callback(ctx, cb)
2878 SSL_CTX_set_msg_callback_arg(ctx, arg)
2879 SSL_set_msg_callback(ssl, cb)
2880 SSL_set_msg_callback_arg(ssl, arg)
2882 to request calling a callback function
2884 void cb(int write_p, int version, int content_type,
2885 const void *buf, size_t len, SSL *ssl, void *arg)
2887 whenever a protocol message has been completely received
2888 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2889 protocol version according to which the SSL library interprets
2890 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2891 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2892 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2893 specification (change_cipher_spec(20), alert(21), handshake(22)).
2894 'buf' and 'len' point to the actual message, 'ssl' to the
2895 SSL object, and 'arg' is the application-defined value set by
2896 SSL[_CTX]_set_msg_callback_arg().
2898 'openssl s_client' and 'openssl s_server' have new '-msg' options
2899 to enable a callback that displays all protocol messages.
2902 *) Change the shared library support so shared libraries are built as
2903 soon as the corresponding static library is finished, and thereby get
2904 openssl and the test programs linked against the shared library.
2905 This still only happens when the keyword "shard" has been given to
2906 the configuration scripts.
2908 NOTE: shared library support is still an experimental thing, and
2909 backward binary compatibility is still not guaranteed.
2910 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2912 *) Add support for Subject Information Access extension.
2913 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2915 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2916 additional bytes when new memory had to be allocated, not just
2917 when reusing an existing buffer.
2920 *) New command line and configuration option 'utf8' for the req command.
2921 This allows field values to be specified as UTF8 strings.
2924 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2925 runs for the former and machine-readable output for the latter.
2928 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2929 of the e-mail address in the DN (i.e., it will go into a certificate
2930 extension only). The new configuration file option 'email_in_dn = no'
2931 has the same effect.
2932 [Massimiliano Pala madwolf@openca.org]
2934 *) Change all functions with names starting with des_ to be starting
2935 with DES_ instead. Add wrappers that are compatible with libdes,
2936 but are named _ossl_old_des_*. Finally, add macros that map the
2937 des_* symbols to the corresponding _ossl_old_des_* if libdes
2938 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2939 desired, the des_* symbols will be mapped to DES_*, with one
2942 Since we provide two compatibility mappings, the user needs to
2943 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2944 compatibility is desired. The default (i.e., when that macro
2945 isn't defined) is OpenSSL 0.9.6c compatibility.
2947 There are also macros that enable and disable the support of old
2948 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2949 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2950 are defined, the default will apply: to support the old des routines.
2952 In either case, one must include openssl/des.h to get the correct
2953 definitions. Do not try to just include openssl/des_old.h, that
2956 NOTE: This is a major break of an old API into a new one. Software
2957 authors are encouraged to switch to the DES_ style functions. Some
2958 time in the future, des_old.h and the libdes compatibility functions
2959 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2960 default), and then completely removed.
2963 *) Test for certificates which contain unsupported critical extensions.
2964 If such a certificate is found during a verify operation it is
2965 rejected by default: this behaviour can be overridden by either
2966 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2967 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2968 X509_supported_extension() has also been added which returns 1 if a
2969 particular extension is supported.
2972 *) Modify the behaviour of EVP cipher functions in similar way to digests
2973 to retain compatibility with existing code.
2976 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2977 compatibility with existing code. In particular the 'ctx' parameter does
2978 not have to be to be initialized before the call to EVP_DigestInit() and
2979 it is tidied up after a call to EVP_DigestFinal(). New function
2980 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2981 EVP_MD_CTX_copy() changed to not require the destination to be
2982 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2983 requires the destination to be valid.
2985 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2986 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2989 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2990 so that complete 'Handshake' protocol structures are kept in memory
2991 instead of overwriting 'msg_type' and 'length' with 'body' data.
2994 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2995 [Massimo Santin via Richard Levitte]
2997 *) Major restructuring to the underlying ENGINE code. This includes
2998 reduction of linker bloat, separation of pure "ENGINE" manipulation
2999 (initialisation, etc) from functionality dealing with implementations
3000 of specific crypto iterfaces. This change also introduces integrated
3001 support for symmetric ciphers and digest implementations - so ENGINEs
3002 can now accelerate these by providing EVP_CIPHER and EVP_MD
3003 implementations of their own. This is detailed in crypto/engine/README
3004 as it couldn't be adequately described here. However, there are a few
3005 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3006 were changed in the original introduction of ENGINE code have now
3007 reverted back - the hooking from this code to ENGINE is now a good
3008 deal more passive and at run-time, operations deal directly with
3009 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3010 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3011 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3012 they were not being used by the framework as there is no concept of a
3013 BIGNUM_METHOD and they could not be generalised to the new
3014 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3015 ENGINE_cpy() has been removed as it cannot be consistently defined in
3019 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3022 *) Change mkdef.pl to sort symbols that get the same entry number,
3023 and make sure the automatically generated functions ERR_load_*
3024 become part of libeay.num as well.
3027 *) New function SSL_renegotiate_pending(). This returns true once
3028 renegotiation has been requested (either SSL_renegotiate() call
3029 or HelloRequest/ClientHello receveived from the peer) and becomes
3030 false once a handshake has been completed.
3031 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3032 sends a HelloRequest, but does not ensure that a handshake takes
3033 place. SSL_renegotiate_pending() is useful for checking if the
3034 client has followed the request.)
3037 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3038 By default, clients may request session resumption even during
3039 renegotiation (if session ID contexts permit); with this option,
3040 session resumption is possible only in the first handshake.
3042 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3043 more bits available for options that should not be part of
3044 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3047 *) Add some demos for certificate and certificate request creation.
3050 *) Make maximum certificate chain size accepted from the peer application
3051 settable (SSL*_get/set_max_cert_list()), as proposed by
3052 "Douglas E. Engert" <deengert@anl.gov>.
3055 *) Add support for shared libraries for Unixware-7
3056 (Boyd Lynn Gerber <gerberb@zenez.com>).
3059 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3060 be done prior to destruction. Use this to unload error strings from
3061 ENGINEs that load their own error strings. NB: This adds two new API
3062 functions to "get" and "set" this destroy handler in an ENGINE.
3065 *) Alter all existing ENGINE implementations (except "openssl" and
3066 "openbsd") to dynamically instantiate their own error strings. This
3067 makes them more flexible to be built both as statically-linked ENGINEs
3068 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3069 Also, add stub code to each that makes building them as self-contained
3070 shared-libraries easier (see README.ENGINE).
3073 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3074 implementations into applications that are completely implemented in
3075 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3076 commands that can be used to configure what shared-library to load and
3077 to control aspects of the way it is handled. Also, made an update to
3078 the README.ENGINE file that brings its information up-to-date and
3079 provides some information and instructions on the "dynamic" ENGINE
3080 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3083 *) Make it possible to unload ranges of ERR strings with a new
3084 "ERR_unload_strings" function.
3087 *) Add a copy() function to EVP_MD.
3090 *) Make EVP_MD routines take a context pointer instead of just the
3091 md_data void pointer.
3094 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3095 that the digest can only process a single chunk of data
3096 (typically because it is provided by a piece of
3097 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3098 is only going to provide a single chunk of data, and hence the
3099 framework needn't accumulate the data for oneshot drivers.
3102 *) As with "ERR", make it possible to replace the underlying "ex_data"
3103 functions. This change also alters the storage and management of global
3104 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3105 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3106 index counters. The API functions that use this state have been changed
3107 to take a "class_index" rather than pointers to the class's local STACK
3108 and counter, and there is now an API function to dynamically create new
3109 classes. This centralisation allows us to (a) plug a lot of the
3110 thread-safety problems that existed, and (b) makes it possible to clean
3111 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3112 such data would previously have always leaked in application code and
3113 workarounds were in place to make the memory debugging turn a blind eye
3114 to it. Application code that doesn't use this new function will still
3115 leak as before, but their memory debugging output will announce it now
3116 rather than letting it slide.
3118 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3119 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3120 has a return value to indicate success or failure.
3123 *) Make it possible to replace the underlying "ERR" functions such that the
3124 global state (2 LHASH tables and 2 locks) is only used by the "default"
3125 implementation. This change also adds two functions to "get" and "set"
3126 the implementation prior to it being automatically set the first time
3127 any other ERR function takes place. Ie. an application can call "get",
3128 pass the return value to a module it has just loaded, and that module
3129 can call its own "set" function using that value. This means the
3130 module's "ERR" operations will use (and modify) the error state in the
3131 application and not in its own statically linked copy of OpenSSL code.
3134 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3135 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3136 the operation, and provides a more encapsulated way for external code
3137 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3138 to use these functions rather than manually incrementing the counts.
3140 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3143 *) Add EVP test program.
3146 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3149 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3150 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3151 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3152 These allow a CRL to be built without having to access X509_CRL fields
3153 directly. Modify 'ca' application to use new functions.
3156 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3157 bug workarounds. Rollback attack detection is a security feature.
3158 The problem will only arise on OpenSSL servers when TLSv1 is not
3159 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3160 Software authors not wanting to support TLSv1 will have special reasons
3161 for their choice and can explicitly enable this option.
3162 [Bodo Moeller, Lutz Jaenicke]
3164 *) Rationalise EVP so it can be extended: don't include a union of
3165 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3166 (similar to those existing for EVP_CIPHER_CTX).
3171 EVP_MD_CTX_init(&md); /* new function call */
3172 EVP_DigestInit(&md, EVP_sha1());
3173 EVP_DigestUpdate(&md, in, len);
3174 EVP_DigestFinal(&md, out, NULL);
3175 EVP_MD_CTX_cleanup(&md); /* new function call */
3179 *) Make DES key schedule conform to the usual scheme, as well as
3180 correcting its structure. This means that calls to DES functions
3181 now have to pass a pointer to a des_key_schedule instead of a
3182 plain des_key_schedule (which was actually always a pointer
3185 des_key_schedule ks;
3187 des_set_key_checked(..., &ks);
3188 des_ncbc_encrypt(..., &ks, ...);
3190 (Note that a later change renames 'des_...' into 'DES_...'.)
3193 *) Initial reduction of linker bloat: the use of some functions, such as
3194 PEM causes large amounts of unused functions to be linked in due to
3195 poor organisation. For example pem_all.c contains every PEM function
3196 which has a knock on effect of linking in large amounts of (unused)
3197 ASN1 code. Grouping together similar functions and splitting unrelated
3198 functions prevents this.
3201 *) Cleanup of EVP macros.
3204 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3205 correct _ecb suffix.
3208 *) Add initial OCSP responder support to ocsp application. The
3209 revocation information is handled using the text based index
3210 use by the ca application. The responder can either handle
3211 requests generated internally, supplied in files (for example
3212 via a CGI script) or using an internal minimal server.
3215 *) Add configuration choices to get zlib compression for TLS.
3218 *) Changes to Kerberos SSL for RFC 2712 compliance:
3219 1. Implemented real KerberosWrapper, instead of just using
3220 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3221 2. Implemented optional authenticator field of KerberosWrapper.
3223 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3224 and authenticator structs; see crypto/krb5/.
3226 Generalized Kerberos calls to support multiple Kerberos libraries.
3227 [Vern Staats <staatsvr@asc.hpc.mil>,
3228 Jeffrey Altman <jaltman@columbia.edu>
3229 via Richard Levitte]
3231 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3232 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3233 values for each of the key sizes rather than having just
3234 parameters (and 'speed' generating keys each time).
3237 *) Speed up EVP routines.
3240 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3241 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3242 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3243 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3245 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3246 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3247 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3250 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3252 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3255 *) Added the OS2-EMX target.
3256 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3258 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3259 to support NCONF routines in extension code. New function CONF_set_nconf()
3260 to allow functions which take an NCONF to also handle the old LHASH
3261 structure: this means that the old CONF compatible routines can be
3262 retained (in particular wrt extensions) without having to duplicate the
3263 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3266 *) Enhance the general user interface with mechanisms for inner control
3267 and with possibilities to have yes/no kind of prompts.
3270 *) Change all calls to low level digest routines in the library and
3271 applications to use EVP. Add missing calls to HMAC_cleanup() and
3272 don't assume HMAC_CTX can be copied using memcpy().
3273 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3275 *) Add the possibility to control engines through control names but with
3276 arbitrary arguments instead of just a string.
3277 Change the key loaders to take a UI_METHOD instead of a callback
3278 function pointer. NOTE: this breaks binary compatibility with earlier
3279 versions of OpenSSL [engine].
3280 Adapt the nCipher code for these new conditions and add a card insertion
3284 *) Enhance the general user interface with mechanisms to better support
3285 dialog box interfaces, application-defined prompts, the possibility
3286 to use defaults (for example default passwords from somewhere else)
3287 and interrupts/cancellations.
3290 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3291 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3294 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3295 tidy up some unnecessarily weird code in 'sk_new()').
3296 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3298 *) Change the key loading routines for ENGINEs to use the same kind
3299 callback (pem_password_cb) as all other routines that need this
3303 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3304 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3305 than this minimum value is recommended.
3308 *) New random seeder for OpenVMS, using the system process statistics
3309 that are easily reachable.
3312 *) Windows apparently can't transparently handle global
3313 variables defined in DLLs. Initialisations such as:
3315 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3317 wont compile. This is used by the any applications that need to
3318 declare their own ASN1 modules. This was fixed by adding the option
3319 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3320 needed for static libraries under Win32.
3323 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3324 setting of purpose and trust fields. New X509_STORE trust and
3325 purpose functions and tidy up setting in other SSL functions.
3328 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3329 structure. These are inherited by X509_STORE_CTX when it is
3330 initialised. This allows various defaults to be set in the
3331 X509_STORE structure (such as flags for CRL checking and custom
3332 purpose or trust settings) for functions which only use X509_STORE_CTX
3333 internally such as S/MIME.
3335 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3336 trust settings if they are not set in X509_STORE. This allows X509_STORE
3337 purposes and trust (in S/MIME for example) to override any set by default.
3339 Add command line options for CRL checking to smime, s_client and s_server
3343 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3344 are set then the CRL is looked up in the X509_STORE structure and
3345 its validity and signature checked, then if the certificate is found
3346 in the CRL the verify fails with a revoked error.
3348 Various new CRL related callbacks added to X509_STORE_CTX structure.
3350 Command line options added to 'verify' application to support this.
3352 This needs some additional work, such as being able to handle multiple
3353 CRLs with different times, extension based lookup (rather than just
3354 by subject name) and ultimately more complete V2 CRL extension
3358 *) Add a general user interface API (crypto/ui/). This is designed
3359 to replace things like des_read_password and friends (backward
3360 compatibility functions using this new API are provided).
3361 The purpose is to remove prompting functions from the DES code
3362 section as well as provide for prompting through dialog boxes in
3363 a window system and the like.
3366 *) Add "ex_data" support to ENGINE so implementations can add state at a
3367 per-structure level rather than having to store it globally.
3370 *) Make it possible for ENGINE structures to be copied when retrieved by
3371 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3372 This causes the "original" ENGINE structure to act like a template,
3373 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3374 operational state can be localised to each ENGINE structure, despite the
3375 fact they all share the same "methods". New ENGINE structures returned in
3376 this case have no functional references and the return value is the single
3377 structural reference. This matches the single structural reference returned
3378 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3382 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3383 needs to match any other type at all we need to manually clear the
3387 *) Changes to the "openssl engine" utility to include;
3388 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3389 about an ENGINE's available control commands.
3390 - executing control commands from command line arguments using the
3391 '-pre' and '-post' switches. '-post' is only used if '-t' is
3392 specified and the ENGINE is successfully initialised. The syntax for
3393 the individual commands are colon-separated, for example;
3394 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3397 *) New dynamic control command support for ENGINEs. ENGINEs can now
3398 declare their own commands (numbers), names (strings), descriptions,
3399 and input types for run-time discovery by calling applications. A
3400 subset of these commands are implicitly classed as "executable"
3401 depending on their input type, and only these can be invoked through
3402 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3403 can be based on user input, config files, etc). The distinction is
3404 that "executable" commands cannot return anything other than a boolean
3405 result and can only support numeric or string input, whereas some
3406 discoverable commands may only be for direct use through
3407 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3408 pointers, or other custom uses. The "executable" commands are to
3409 support parameterisations of ENGINE behaviour that can be
3410 unambiguously defined by ENGINEs and used consistently across any
3411 OpenSSL-based application. Commands have been added to all the
3412 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3413 control over shared-library paths without source code alterations.
3416 *) Changed all ENGINE implementations to dynamically allocate their
3417 ENGINEs rather than declaring them statically. Apart from this being
3418 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3419 this also allows the implementations to compile without using the
3420 internal engine_int.h header.
3423 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3424 'const' value. Any code that should be able to modify a RAND_METHOD
3425 should already have non-const pointers to it (ie. they should only
3426 modify their own ones).
3429 *) Made a variety of little tweaks to the ENGINE code.
3430 - "atalla" and "ubsec" string definitions were moved from header files
3431 to C code. "nuron" string definitions were placed in variables
3432 rather than hard-coded - allowing parameterisation of these values
3433 later on via ctrl() commands.
3434 - Removed unused "#if 0"'d code.
3435 - Fixed engine list iteration code so it uses ENGINE_free() to release
3436 structural references.
3437 - Constified the RAND_METHOD element of ENGINE structures.
3438 - Constified various get/set functions as appropriate and added
3439 missing functions (including a catch-all ENGINE_cpy that duplicates
3440 all ENGINE values onto a new ENGINE except reference counts/state).
3441 - Removed NULL parameter checks in get/set functions. Setting a method
3442 or function to NULL is a way of cancelling out a previously set
3443 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3444 and doesn't justify the extra error symbols and code.
3445 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3446 flags from engine_int.h to engine.h.
3447 - Changed prototypes for ENGINE handler functions (init(), finish(),
3448 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3451 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3452 to the algorithm using long division. The binary algorithm can be
3453 used only if the modulus is odd. On 32-bit systems, it is faster
3454 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3455 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3456 up to 450 bits. In 64-bit environments, the binary algorithm
3457 appears to be advantageous for much longer moduli; here we use it
3458 for moduli up to 2048 bits.
3461 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3462 could not support the combine flag in choice fields.
3465 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3466 extensions from a certificate request to the certificate.
3469 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3470 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3471 file: this allows the display of the certificate about to be
3472 signed to be customised, to allow certain fields to be included
3473 or excluded and extension details. The old system didn't display
3474 multicharacter strings properly, omitted fields not in the policy
3475 and couldn't display additional details such as extensions.
3478 *) Function EC_POINTs_mul for multiple scalar multiplication
3479 of an arbitrary number of elliptic curve points
3480 \sum scalars[i]*points[i],
3481 optionally including the generator defined for the EC_GROUP:
3482 scalar*generator + \sum scalars[i]*points[i].
3484 EC_POINT_mul is a simple wrapper function for the typical case
3485 that the point list has just one item (besides the optional
3489 *) First EC_METHODs for curves over GF(p):
3491 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3492 operations and provides various method functions that can also
3493 operate with faster implementations of modular arithmetic.
3495 EC_GFp_mont_method() reuses most functions that are part of
3496 EC_GFp_simple_method, but uses Montgomery arithmetic.
3498 [Bodo Moeller; point addition and point doubling
3499 implementation directly derived from source code provided by
3500 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3502 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3503 crypto/ec/ec_lib.c):
3505 Curves are EC_GROUP objects (with an optional group generator)
3506 based on EC_METHODs that are built into the library.
3508 Points are EC_POINT objects based on EC_GROUP objects.
3510 Most of the framework would be able to handle curves over arbitrary
3511 finite fields, but as there are no obvious types for fields other
3512 than GF(p), some functions are limited to that for now.
3515 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3516 that the file contains a complete HTTP response.
3519 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3520 change the def and num file printf format specifier from "%-40sXXX"
3521 to "%-39s XXX". The latter will always guarantee a space after the
3522 field while the former will cause them to run together if the field
3523 is 40 of more characters long.
3526 *) Constify the cipher and digest 'method' functions and structures
3527 and modify related functions to take constant EVP_MD and EVP_CIPHER
3531 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3532 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3535 *) Modify EVP_Digest*() routines so they now return values. Although the
3536 internal software routines can never fail additional hardware versions
3540 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3542 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3543 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3546 ERR_R_NESTED_ASN1_ERROR
3548 ERR_R_MISSING_ASN1_EOS
3549 were 4 .. 9, conflicting with
3550 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3552 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3553 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3555 Add new error code 'ERR_R_INTERNAL_ERROR'.
3558 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3562 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3563 sets the subject name for a new request or supersedes the
3564 subject name in a given request. Formats that can be parsed are
3565 'CN=Some Name, OU=myOU, C=IT'
3567 'CN=Some Name/OU=myOU/C=IT'.
3569 Add options '-batch' and '-verbose' to 'openssl req'.
3570 [Massimiliano Pala <madwolf@hackmasters.net>]
3572 *) Introduce the possibility to access global variables through
3573 functions on platform were that's the best way to handle exporting
3574 global variables in shared libraries. To enable this functionality,
3575 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3576 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3577 is normally done by Configure or something similar).
3579 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3580 in the source file (foo.c) like this:
3582 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3583 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3585 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3586 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3588 OPENSSL_DECLARE_GLOBAL(int,foo);
3589 #define foo OPENSSL_GLOBAL_REF(foo)
3590 OPENSSL_DECLARE_GLOBAL(double,bar);
3591 #define bar OPENSSL_GLOBAL_REF(bar)
3593 The #defines are very important, and therefore so is including the
3594 header file everywhere where the defined globals are used.
3596 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3597 of ASN.1 items, but that structure is a bit different.
3599 The largest change is in util/mkdef.pl which has been enhanced with
3600 better and easier to understand logic to choose which symbols should
3601 go into the Windows .def files as well as a number of fixes and code
3602 cleanup (among others, algorithm keywords are now sorted
3603 lexicographically to avoid constant rewrites).
3606 *) In BN_div() keep a copy of the sign of 'num' before writing the
3607 result to 'rm' because if rm==num the value will be overwritten
3608 and produce the wrong result if 'num' is negative: this caused
3609 problems with BN_mod() and BN_nnmod().
3612 *) Function OCSP_request_verify(). This checks the signature on an
3613 OCSP request and verifies the signer certificate. The signer
3614 certificate is just checked for a generic purpose and OCSP request
3618 *) Add OCSP_check_validity() function to check the validity of OCSP
3619 responses. OCSP responses are prepared in real time and may only
3620 be a few seconds old. Simply checking that the current time lies
3621 between thisUpdate and nextUpdate max reject otherwise valid responses
3622 caused by either OCSP responder or client clock inaccuracy. Instead
3623 we allow thisUpdate and nextUpdate to fall within a certain period of
3624 the current time. The age of the response can also optionally be
3625 checked. Two new options -validity_period and -status_age added to
3629 *) If signature or public key algorithm is unrecognized print out its
3630 OID rather that just UNKNOWN.
3633 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3634 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3635 ID to be generated from the issuer certificate alone which can then be
3636 passed to OCSP_id_issuer_cmp().
3639 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3640 ASN1 modules to export functions returning ASN1_ITEM pointers
3641 instead of the ASN1_ITEM structures themselves. This adds several
3642 new macros which allow the underlying ASN1 function/structure to
3643 be accessed transparently. As a result code should not use ASN1_ITEM
3644 references directly (such as &X509_it) but instead use the relevant
3645 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3646 use of the new ASN1 code on platforms where exporting structures
3647 is problematical (for example in shared libraries) but exporting
3648 functions returning pointers to structures is not.
3651 *) Add support for overriding the generation of SSL/TLS session IDs.
3652 These callbacks can be registered either in an SSL_CTX or per SSL.
3653 The purpose of this is to allow applications to control, if they wish,
3654 the arbitrary values chosen for use as session IDs, particularly as it
3655 can be useful for session caching in multiple-server environments. A
3656 command-line switch for testing this (and any client code that wishes
3657 to use such a feature) has been added to "s_server".
3658 [Geoff Thorpe, Lutz Jaenicke]
3660 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3661 of the form '#if defined(...) || defined(...) || ...' and
3662 '#if !defined(...) && !defined(...) && ...'. This also avoids
3663 the growing number of special cases it was previously handling.
3666 *) Make all configuration macros available for application by making
3667 sure they are available in opensslconf.h, by giving them names starting
3668 with "OPENSSL_" to avoid conflicts with other packages and by making
3669 sure e_os2.h will cover all platform-specific cases together with
3671 Additionally, it is now possible to define configuration/platform-
3672 specific names (called "system identities"). In the C code, these
3673 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3674 macro with the name beginning with "OPENSSL_SYS_", which is determined
3675 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3679 *) New option -set_serial to 'req' and 'x509' this allows the serial
3680 number to use to be specified on the command line. Previously self
3681 signed certificates were hard coded with serial number 0 and the
3682 CA options of 'x509' had to use a serial number in a file which was
3686 *) New options to 'ca' utility to support V2 CRL entry extensions.
3687 Currently CRL reason, invalidity date and hold instruction are
3688 supported. Add new CRL extensions to V3 code and some new objects.
3691 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3692 disable standard block padding (aka PKCS#5 padding) in the EVP
3693 API, which was previously mandatory. This means that the data is
3694 not padded in any way and so the total length much be a multiple
3695 of the block size, otherwise an error occurs.
3698 *) Initial (incomplete) OCSP SSL support.
3701 *) New function OCSP_parse_url(). This splits up a URL into its host,
3702 port and path components: primarily to parse OCSP URLs. New -url
3703 option to ocsp utility.
3706 *) New nonce behavior. The return value of OCSP_check_nonce() now
3707 reflects the various checks performed. Applications can decide
3708 whether to tolerate certain situations such as an absent nonce
3709 in a response when one was present in a request: the ocsp application
3710 just prints out a warning. New function OCSP_add1_basic_nonce()
3711 this is to allow responders to include a nonce in a response even if
3712 the request is nonce-less.
3715 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3716 skipped when using openssl x509 multiple times on a single input file,
3717 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3720 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3721 set string type: to handle setting ASN1_TIME structures. Fix ca
3722 utility to correctly initialize revocation date of CRLs.
3725 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3726 the clients preferred ciphersuites and rather use its own preferences.
3727 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3728 Internet Explorer by ensuring unchanged hash method during stepup.
3729 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3732 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3733 to aes and add a new 'exist' option to print out symbols that don't
3737 *) Additional options to ocsp utility to allow flags to be set and
3738 additional certificates supplied.
3741 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3742 OCSP client a number of certificate to only verify the response
3746 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3747 handle the new API. Currently only ECB, CBC modes supported. Add new
3750 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3751 Encryption Standard (AES) Ciphersuites for Transport Layer
3752 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3753 not enabled by default and were not part of the "ALL" ciphersuite
3754 alias because they were not yet official; they could be
3755 explicitly requested by specifying the "AESdraft" ciphersuite
3756 group alias. In the final release of OpenSSL 0.9.7, the group
3757 alias is called "AES" and is part of "ALL".)
3758 [Ben Laurie, Steve Henson, Bodo Moeller]
3760 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3761 request to response.
3764 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3765 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3766 extract information from a certificate request. OCSP_response_create()
3767 creates a response and optionally adds a basic response structure.
3768 OCSP_basic_add1_status() adds a complete single response to a basic
3769 response and returns the OCSP_SINGLERESP structure just added (to allow
3770 extensions to be included for example). OCSP_basic_add1_cert() adds a
3771 certificate to a basic response and OCSP_basic_sign() signs a basic
3772 response with various flags. New helper functions ASN1_TIME_check()
3773 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3774 (converts ASN1_TIME to GeneralizedTime).
3777 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3778 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3779 structure from a certificate. X509_pubkey_digest() digests the public_key
3780 contents: this is used in various key identifiers.
3783 *) Make sk_sort() tolerate a NULL argument.
3784 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3786 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3787 passed by the function are trusted implicitly. If any of them signed the
3788 response then it is assumed to be valid and is not verified.
3791 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3792 to data. This was previously part of the PKCS7 ASN1 code. This
3793 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3794 [Steve Henson, reported by Kenneth R. Robinette
3795 <support@securenetterm.com>]
3797 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3798 routines: without these tracing memory leaks is very painful.
3799 Fix leaks in PKCS12 and PKCS7 routines.
3802 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3803 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3804 effectively meant GeneralizedTime would never be used. Now it
3805 is initialised to -1 but X509_time_adj() now has to check the value
3806 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3807 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3808 [Steve Henson, reported by Kenneth R. Robinette
3809 <support@securenetterm.com>]
3811 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3812 result in a zero length in the ASN1_INTEGER structure which was
3813 not consistent with the structure when d2i_ASN1_INTEGER() was used
3814 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3815 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3816 where it did not print out a minus for negative ASN1_INTEGER.
3819 *) Add summary printout to ocsp utility. The various functions which
3820 convert status values to strings have been renamed to:
3821 OCSP_response_status_str(), OCSP_cert_status_str() and
3822 OCSP_crl_reason_str() and are no longer static. New options
3823 to verify nonce values and to disable verification. OCSP response
3824 printout format cleaned up.
3827 *) Add additional OCSP certificate checks. These are those specified
3828 in RFC2560. This consists of two separate checks: the CA of the
3829 certificate being checked must either be the OCSP signer certificate
3830 or the issuer of the OCSP signer certificate. In the latter case the
3831 OCSP signer certificate must contain the OCSP signing extended key
3832 usage. This check is performed by attempting to match the OCSP
3833 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3834 in the OCSP_CERTID structures of the response.
3837 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3838 and related routines. This uses the standard OpenSSL certificate
3839 verify routines to perform initial checks (just CA validity) and
3840 to obtain the certificate chain. Then additional checks will be
3841 performed on the chain. Currently the root CA is checked to see
3842 if it is explicitly trusted for OCSP signing. This is used to set
3843 a root CA as a global signing root: that is any certificate that
3844 chains to that CA is an acceptable OCSP signing certificate.
3847 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3848 extensions from a separate configuration file.
3849 As when reading extensions from the main configuration file,
3850 the '-extensions ...' option may be used for specifying the
3852 [Massimiliano Pala <madwolf@comune.modena.it>]
3854 *) New OCSP utility. Allows OCSP requests to be generated or
3855 read. The request can be sent to a responder and the output
3856 parsed, outputed or printed in text form. Not complete yet:
3857 still needs to check the OCSP response validity.
3860 *) New subcommands for 'openssl ca':
3861 'openssl ca -status <serial>' prints the status of the cert with
3862 the given serial number (according to the index file).
3863 'openssl ca -updatedb' updates the expiry status of certificates
3865 [Massimiliano Pala <madwolf@comune.modena.it>]
3867 *) New '-newreq-nodes' command option to CA.pl. This is like
3868 '-newreq', but calls 'openssl req' with the '-nodes' option
3869 so that the resulting key is not encrypted.
3870 [Damien Miller <djm@mindrot.org>]
3872 *) New configuration for the GNU Hurd.
3873 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3875 *) Initial code to implement OCSP basic response verify. This
3876 is currently incomplete. Currently just finds the signer's
3877 certificate and verifies the signature on the response.
3880 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3881 value of OPENSSLDIR. This is available via the new '-d' option
3882 to 'openssl version', and is also included in 'openssl version -a'.
3885 *) Allowing defining memory allocation callbacks that will be given
3886 file name and line number information in additional arguments
3887 (a const char* and an int). The basic functionality remains, as
3888 well as the original possibility to just replace malloc(),
3889 realloc() and free() by functions that do not know about these
3890 additional arguments. To register and find out the current
3891 settings for extended allocation functions, the following
3892 functions are provided:
3894 CRYPTO_set_mem_ex_functions
3895 CRYPTO_set_locked_mem_ex_functions
3896 CRYPTO_get_mem_ex_functions
3897 CRYPTO_get_locked_mem_ex_functions
3899 These work the same way as CRYPTO_set_mem_functions and friends.
3900 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3901 extended allocation function is enabled.
3902 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3903 a conventional allocation function is enabled.
3904 [Richard Levitte, Bodo Moeller]
3906 *) Finish off removing the remaining LHASH function pointer casts.
3907 There should no longer be any prototype-casting required when using
3908 the LHASH abstraction, and any casts that remain are "bugs". See
3909 the callback types and macros at the head of lhash.h for details
3910 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3913 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3914 If /dev/[u]random devices are not available or do not return enough
3915 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3917 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3918 /etc/entropy will be queried once each in this sequence, quering stops
3919 when enough entropy was collected without querying more sockets.
3922 *) Change the Unix RAND_poll() variant to be able to poll several
3923 random devices, as specified by DEVRANDOM, until a sufficient amount
3924 of data has been collected. We spend at most 10 ms on each file
3925 (select timeout) and read in non-blocking mode. DEVRANDOM now
3926 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3927 (previously it was just the string "/dev/urandom"), so on typical
3928 platforms the 10 ms delay will never occur.
3929 Also separate out the Unix variant to its own file, rand_unix.c.
3930 For VMS, there's a currently-empty rand_vms.c.
3933 *) Move OCSP client related routines to ocsp_cl.c. These
3934 provide utility functions which an application needing
3935 to issue a request to an OCSP responder and analyse the
3936 response will typically need: as opposed to those which an
3937 OCSP responder itself would need which will be added later.
3939 OCSP_request_sign() signs an OCSP request with an API similar
3940 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3941 response. OCSP_response_get1_basic() extracts basic response
3942 from response. OCSP_resp_find_status(): finds and extracts status
3943 information from an OCSP_CERTID structure (which will be created
3944 when the request structure is built). These are built from lower
3945 level functions which work on OCSP_SINGLERESP structures but
3946 wont normally be used unless the application wishes to examine
3947 extensions in the OCSP response for example.
3949 Replace nonce routines with a pair of functions.
3950 OCSP_request_add1_nonce() adds a nonce value and optionally
3951 generates a random value. OCSP_check_nonce() checks the
3952 validity of the nonce in an OCSP response.
3955 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3956 This doesn't copy the supplied OCSP_CERTID and avoids the
3957 need to free up the newly created id. Change return type
3958 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3959 This can then be used to add extensions to the request.
3960 Deleted OCSP_request_new(), since most of its functionality
3961 is now in OCSP_REQUEST_new() (and the case insensitive name
3962 clash) apart from the ability to set the request name which
3963 will be added elsewhere.
3966 *) Update OCSP API. Remove obsolete extensions argument from
3967 various functions. Extensions are now handled using the new
3968 OCSP extension code. New simple OCSP HTTP function which
3969 can be used to send requests and parse the response.
3972 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3973 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3974 uses the special reorder version of SET OF to sort the attributes
3975 and reorder them to match the encoded order. This resolves a long
3976 standing problem: a verify on a PKCS7 structure just after signing
3977 it used to fail because the attribute order did not match the
3978 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3979 it uses the received order. This is necessary to tolerate some broken
3980 software that does not order SET OF. This is handled by encoding
3981 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3982 to produce the required SET OF.
3985 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3986 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3987 files to get correct declarations of the ASN.1 item variables.
3990 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3991 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3992 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3993 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3994 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3995 ASN1_ITEM and no wrapper functions.
3998 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3999 replace the old function pointer based I/O routines. Change most of
4000 the *_d2i_bio() and *_d2i_fp() functions to use these.
4003 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4004 lines, recognice more "algorithms" that can be deselected, and make
4005 it complain about algorithm deselection that isn't recognised.
4008 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4009 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4010 to use new functions. Add NO_ASN1_OLD which can be set to remove
4011 some old style ASN1 functions: this can be used to determine if old
4012 code will still work when these eventually go away.
4015 *) New extension functions for OCSP structures, these follow the
4016 same conventions as certificates and CRLs.
4019 *) New function X509V3_add1_i2d(). This automatically encodes and
4020 adds an extension. Its behaviour can be customised with various
4021 flags to append, replace or delete. Various wrappers added for
4022 certifcates and CRLs.
4025 *) Fix to avoid calling the underlying ASN1 print routine when
4026 an extension cannot be parsed. Correct a typo in the
4027 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4030 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4031 entries for variables.
4034 *) Add functionality to apps/openssl.c for detecting locking
4035 problems: As the program is single-threaded, all we have
4036 to do is register a locking callback using an array for
4037 storing which locks are currently held by the program.
4040 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4041 SSL_get_ex_data_X509_STORE_idx(), which is used in
4042 ssl_verify_cert_chain() and thus can be called at any time
4043 during TLS/SSL handshakes so that thread-safety is essential.
4044 Unfortunately, the ex_data design is not at all suited
4045 for multi-threaded use, so it probably should be abolished.
4048 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4049 [Broadcom, tweaked and integrated by Geoff Thorpe]
4051 *) Move common extension printing code to new function
4052 X509V3_print_extensions(). Reorganise OCSP print routines and
4053 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4056 *) New function X509_signature_print() to remove duplication in some
4060 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4061 set (this was treated exactly the same as SET OF previously). This
4062 is used to reorder the STACK representing the structure to match the
4063 encoding. This will be used to get round a problem where a PKCS7
4064 structure which was signed could not be verified because the STACK
4065 order did not reflect the encoded order.
4068 *) Reimplement the OCSP ASN1 module using the new code.
4071 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4072 for its ASN1 operations. The old style function pointers still exist
4073 for now but they will eventually go away.
4076 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4077 completely replaces the old ASN1 functionality with a table driven
4078 encoder and decoder which interprets an ASN1_ITEM structure describing
4079 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4080 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4081 has also been converted to the new form.
4084 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4085 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4086 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4087 for negative moduli.
4090 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4091 of not touching the result's sign bit.
4094 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4098 *) Changed the LHASH code to use prototypes for callbacks, and created
4099 macros to declare and implement thin (optionally static) functions
4100 that provide type-safety and avoid function pointer casting for the
4101 type-specific callbacks.
4104 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4106 [Veers Staats <staatsvr@asc.hpc.mil>,
4107 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4109 *) Reformat the FAQ so the different questions and answers can be divided
4110 in sections depending on the subject.
4113 *) Have the zlib compression code load ZLIB.DLL dynamically under
4117 *) New function BN_mod_sqrt for computing square roots modulo a prime
4118 (using the probabilistic Tonelli-Shanks algorithm unless
4119 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4120 be handled deterministically).
4121 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4123 *) Make BN_mod_inverse faster by explicitly handling small quotients
4124 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4125 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4128 *) New function BN_kronecker.
4131 *) Fix BN_gcd so that it works on negative inputs; the result is
4132 positive unless both parameters are zero.
4133 Previously something reasonably close to an infinite loop was
4134 possible because numbers could be growing instead of shrinking
4135 in the implementation of Euclid's algorithm.
4138 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4139 sign of the number in question.
4141 Fix BN_is_word(a,w) to work correctly for w == 0.
4143 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4144 because its test if the absolute value of 'a' equals 'w'.
4145 Note that BN_abs_is_word does *not* handle w == 0 reliably;
4146 it exists mostly for use in the implementations of BN_is_zero(),
4147 BN_is_one(), and BN_is_word().
4150 *) New function BN_swap.
4153 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
4154 the exponentiation functions are more likely to produce reasonable
4155 results on negative inputs.
4158 *) Change BN_mod_mul so that the result is always non-negative.
4159 Previously, it could be negative if one of the factors was negative;
4160 I don't think anyone really wanted that behaviour.
4163 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
4164 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
4165 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
4166 and add new functions:
4175 BN_mod_lshift1_quick
4179 These functions always generate non-negative results.
4181 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
4182 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
4184 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
4185 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
4186 be reduced modulo m.
4187 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4190 The following entry accidentily appeared in the CHANGES file
4191 distributed with OpenSSL 0.9.7. The modifications described in
4192 it do *not* apply to OpenSSL 0.9.7.
4194 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4195 was actually never needed) and in BN_mul(). The removal in BN_mul()
4196 required a small change in bn_mul_part_recursive() and the addition
4197 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4198 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4199 bn_sub_words() and bn_add_words() except they take arrays with
4204 *) In 'openssl passwd', verify passwords read from the terminal
4205 unless the '-salt' option is used (which usually means that
4206 verification would just waste user's time since the resulting
4207 hash is going to be compared with some given password hash)
4208 or the new '-noverify' option is used.
4210 This is an incompatible change, but it does not affect
4211 non-interactive use of 'openssl passwd' (passwords on the command
4212 line, '-stdin' option, '-in ...' option) and thus should not
4216 *) Remove all references to RSAref, since there's no more need for it.
4219 *) Make DSO load along a path given through an environment variable
4220 (SHLIB_PATH) with shl_load().
4223 *) Constify the ENGINE code as a result of BIGNUM constification.
4224 Also constify the RSA code and most things related to it. In a
4225 few places, most notable in the depth of the ASN.1 code, ugly
4226 casts back to non-const were required (to be solved at a later
4230 *) Make it so the openssl application has all engines loaded by default.
4233 *) Constify the BIGNUM routines a little more.
4236 *) Add the following functions:
4238 ENGINE_load_cswift()
4240 ENGINE_load_atalla()
4242 ENGINE_load_builtin_engines()
4244 That way, an application can itself choose if external engines that
4245 are built-in in OpenSSL shall ever be used or not. The benefit is
4246 that applications won't have to be linked with libdl or other dso
4247 libraries unless it's really needed.
4249 Changed 'openssl engine' to load all engines on demand.
4250 Changed the engine header files to avoid the duplication of some
4251 declarations (they differed!).
4254 *) 'openssl engine' can now list capabilities.
4257 *) Better error reporting in 'openssl engine'.
4260 *) Never call load_dh_param(NULL) in s_server.
4263 *) Add engine application. It can currently list engines by name and
4264 identity, and test if they are actually available.
4267 *) Improve RPM specification file by forcing symbolic linking and making
4268 sure the installed documentation is also owned by root.root.
4269 [Damien Miller <djm@mindrot.org>]
4271 *) Give the OpenSSL applications more possibilities to make use of
4272 keys (public as well as private) handled by engines.
4275 *) Add OCSP code that comes from CertCo.
4278 *) Add VMS support for the Rijndael code.
4281 *) Added untested support for Nuron crypto accelerator.
4284 *) Add support for external cryptographic devices. This code was
4285 previously distributed separately as the "engine" branch.
4286 [Geoff Thorpe, Richard Levitte]
4288 *) Rework the filename-translation in the DSO code. It is now possible to
4289 have far greater control over how a "name" is turned into a filename
4290 depending on the operating environment and any oddities about the
4291 different shared library filenames on each system.
4294 *) Support threads on FreeBSD-elf in Configure.
4297 *) Fix for SHA1 assembly problem with MASM: it produces
4298 warnings about corrupt line number information when assembling
4299 with debugging information. This is caused by the overlapping
4301 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
4304 NCONF_get_number() has no error checking at all. As a replacement,
4305 NCONF_get_number_e() is defined (_e for "error checking") and is
4306 promoted strongly. The old NCONF_get_number is kept around for
4307 binary backward compatibility.
4308 Make it possible for methods to load from something other than a BIO,
4309 by providing a function pointer that is given a name instead of a BIO.
4310 For example, this could be used to load configuration data from an
4314 *) Fix for non blocking accept BIOs. Added new I/O special reason
4315 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
4316 with non blocking I/O was not possible because no retry code was
4317 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
4321 *) Added the beginnings of Rijndael support.
4324 *) Fix for bug in DirectoryString mask setting. Add support for
4325 X509_NAME_print_ex() in 'req' and X509_print_ex() function
4326 to allow certificate printing to more controllable, additional
4327 'certopt' option to 'x509' to allow new printing options to be
4331 *) Clean old EAY MD5 hack from e_os.h.
4334 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
4336 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4337 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4338 [Joe Orton, Steve Henson]
4340 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
4342 *) Fix additional bug revealed by the NISCC test suite:
4344 Stop bug triggering large recursion when presented with
4345 certain ASN.1 tags (CVE-2003-0851)
4348 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
4350 *) Fix various bugs revealed by running the NISCC test suite:
4352 Stop out of bounds reads in the ASN1 code when presented with
4353 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4355 If verify callback ignores invalid public key errors don't try to check
4356 certificate signature with the NULL public key.
4360 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4361 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4365 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4366 extra data after the compression methods not only for TLS 1.0
4367 but also for SSL 3.0 (as required by the specification).
4368 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4370 *) Change X509_certificate_type() to mark the key as exported/exportable
4371 when it's 512 *bits* long, not 512 bytes.
4374 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4376 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4377 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4378 a protocol version number mismatch like a decryption error
4379 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4382 *) Turn on RSA blinding by default in the default implementation
4383 to avoid a timing attack. Applications that don't want it can call
4384 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4385 They would be ill-advised to do so in most cases.
4386 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4388 *) Change RSA blinding code so that it works when the PRNG is not
4389 seeded (in this case, the secret RSA exponent is abused as
4390 an unpredictable seed -- if it is not unpredictable, there
4391 is no point in blinding anyway). Make RSA blinding thread-safe
4392 by remembering the creator's thread ID in rsa->blinding and
4393 having all other threads use local one-time blinding factors
4394 (this requires more computation than sharing rsa->blinding, but
4395 avoids excessive locking; and if an RSA object is not shared
4396 between threads, blinding will still be very fast).
4399 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4401 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4402 via timing by performing a MAC computation even if incorrrect
4403 block cipher padding has been found. This is a countermeasure
4404 against active attacks where the attacker has to distinguish
4405 between bad padding and a MAC verification error. (CVE-2003-0078)
4407 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4408 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4409 Martin Vuagnoux (EPFL, Ilion)]
4411 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4413 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4414 memory from it's contents. This is done with a counter that will
4415 place alternating values in each byte. This can be used to solve
4416 two issues: 1) the removal of calls to memset() by highly optimizing
4417 compilers, and 2) cleansing with other values than 0, since those can
4418 be read through on certain media, for example a swap space on disk.
4421 *) Bugfix: client side session caching did not work with external caching,
4422 because the session->cipher setting was not restored when reloading
4423 from the external cache. This problem was masked, when
4424 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4425 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4428 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4429 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4430 [Zeev Lieber <zeev-l@yahoo.com>]
4432 *) Undo an undocumented change introduced in 0.9.6e which caused
4433 repeated calls to OpenSSL_add_all_ciphers() and
4434 OpenSSL_add_all_digests() to be ignored, even after calling
4438 *) Change the default configuration reader to deal with last line not
4439 being properly terminated.
4442 *) Change X509_NAME_cmp() so it applies the special rules on handling
4443 DN values that are of type PrintableString, as well as RDNs of type
4444 emailAddress where the value has the type ia5String.
4445 [stefank@valicert.com via Richard Levitte]
4447 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4448 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4449 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4450 the bitwise-OR of the two for use by the majority of applications
4451 wanting this behaviour, and update the docs. The documented
4452 behaviour and actual behaviour were inconsistent and had been
4453 changing anyway, so this is more a bug-fix than a behavioural
4455 [Geoff Thorpe, diagnosed by Nadav Har'El]
4457 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4458 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4461 *) Fix initialization code race conditions in
4462 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4463 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4464 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4465 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4466 ssl2_get_cipher_by_char(),
4467 ssl3_get_cipher_by_char().
4468 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4470 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4471 the cached sessions are flushed, as the remove_cb() might use ex_data
4472 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4473 (see [openssl.org #212]).
4474 [Geoff Thorpe, Lutz Jaenicke]
4476 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4477 length, instead of the encoding length to d2i_ASN1_OBJECT.
4480 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4482 *) [In 0.9.6g-engine release:]
4483 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4484 [Lynn Gazis <lgazis@rainbow.com>]
4486 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4488 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4489 and get fix the header length calculation.
4490 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4491 Alon Kantor <alonk@checkpoint.com> (and others),
4494 *) Use proper error handling instead of 'assertions' in buffer
4495 overflow checks added in 0.9.6e. This prevents DoS (the
4496 assertions could call abort()).
4497 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4499 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4501 *) Add various sanity checks to asn1_get_length() to reject
4502 the ASN1 length bytes if they exceed sizeof(long), will appear
4503 negative or the content length exceeds the length of the
4505 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4507 *) Fix cipher selection routines: ciphers without encryption had no flags
4508 for the cipher strength set and where therefore not handled correctly
4509 by the selection routines (PR #130).
4512 *) Fix EVP_dsa_sha macro.
4516 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4517 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4518 that was added in OpenSSL 0.9.6d.
4520 As the countermeasure turned out to be incompatible with some
4521 broken SSL implementations, the new option is part of SSL_OP_ALL.
4522 SSL_OP_ALL is usually employed when compatibility with weird SSL
4523 implementations is desired (e.g. '-bugs' option to 's_client' and
4524 's_server'), so the new option is automatically set in many
4528 *) Changes in security patch:
4530 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4531 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4532 Air Force Materiel Command, USAF, under agreement number
4535 *) Add various sanity checks to asn1_get_length() to reject
4536 the ASN1 length bytes if they exceed sizeof(long), will appear
4537 negative or the content length exceeds the length of the
4538 supplied buffer. (CVE-2002-0659)
4539 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4541 *) Assertions for various potential buffer overflows, not known to
4543 [Ben Laurie (CHATS)]
4545 *) Various temporary buffers to hold ASCII versions of integers were
4546 too small for 64 bit platforms. (CVE-2002-0655)
4547 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4549 *) Remote buffer overflow in SSL3 protocol - an attacker could
4550 supply an oversized session ID to a client. (CVE-2002-0656)
4551 [Ben Laurie (CHATS)]
4553 *) Remote buffer overflow in SSL2 protocol - an attacker could
4554 supply an oversized client master key. (CVE-2002-0656)
4555 [Ben Laurie (CHATS)]
4557 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4559 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4560 encoded as NULL) with id-dsa-with-sha1.
4561 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4563 *) Check various X509_...() return values in apps/req.c.
4564 [Nils Larsch <nla@trustcenter.de>]
4566 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4567 an end-of-file condition would erronously be flagged, when the CRLF
4568 was just at the end of a processed block. The bug was discovered when
4569 processing data through a buffering memory BIO handing the data to a
4570 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4571 <ptsekov@syntrex.com> and Nedelcho Stanev.
4574 *) Implement a countermeasure against a vulnerability recently found
4575 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4576 before application data chunks to avoid the use of known IVs
4577 with data potentially chosen by the attacker.
4580 *) Fix length checks in ssl3_get_client_hello().
4583 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4584 to prevent ssl3_read_internal() from incorrectly assuming that
4585 ssl3_read_bytes() found application data while handshake
4586 processing was enabled when in fact s->s3->in_read_app_data was
4587 merely automatically cleared during the initial handshake.
4588 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4590 *) Fix object definitions for Private and Enterprise: they were not
4591 recognized in their shortname (=lowercase) representation. Extend
4592 obj_dat.pl to issue an error when using undefined keywords instead
4593 of silently ignoring the problem (Svenning Sorensen
4594 <sss@sss.dnsalias.net>).
4597 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4598 generators, i.e. generators other than 2 and 5. (Previously, the
4599 code did not properly initialise the 'add' and 'rem' values to
4600 BN_generate_prime().)
4602 In the new general case, we do not insist that 'generator' is
4603 actually a primitive root: This requirement is rather pointless;
4604 a generator of the order-q subgroup is just as good, if not
4608 *) Map new X509 verification errors to alerts. Discovered and submitted by
4609 Tom Wu <tom@arcot.com>.
4612 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4613 returning non-zero before the data has been completely received
4614 when using non-blocking I/O.
4615 [Bodo Moeller; problem pointed out by John Hughes]
4617 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4618 [Ben Laurie, Lutz Jaenicke]
4620 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4621 Yoram Zahavi <YoramZ@gilian.com>).
4624 *) Add information about CygWin 1.3 and on, and preserve proper
4625 configuration for the versions before that.
4626 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4628 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4629 check whether we deal with a copy of a session and do not delete from
4630 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4631 <izhar@checkpoint.com>.
4634 *) Do not store session data into the internal session cache, if it
4635 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4636 flag is set). Proposed by Aslam <aslam@funk.com>.
4639 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4643 *) [In 0.9.6d-engine release:]
4644 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4645 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4647 *) Add the configuration target linux-s390x.
4648 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4650 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4651 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4652 variable as an indication that a ClientHello message has been
4653 received. As the flag value will be lost between multiple
4654 invocations of ssl3_accept when using non-blocking I/O, the
4655 function may not be aware that a handshake has actually taken
4656 place, thus preventing a new session from being added to the
4659 To avoid this problem, we now set s->new_session to 2 instead of
4660 using a local variable.
4661 [Lutz Jaenicke, Bodo Moeller]
4663 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4664 if the SSL_R_LENGTH_MISMATCH error is detected.
4665 [Geoff Thorpe, Bodo Moeller]
4667 *) New 'shared_ldflag' column in Configure platform table.
4670 *) Fix EVP_CIPHER_mode macro.
4671 ["Dan S. Camper" <dan@bti.net>]
4673 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4674 type, we must throw them away by setting rr->length to 0.
4675 [D P Chang <dpc@qualys.com>]
4677 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4679 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4680 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4681 worked incorrectly for those cases where range = 10..._2 and
4682 3*range is two bits longer than range.)
4685 *) Only add signing time to PKCS7 structures if it is not already
4689 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4690 OBJ_ld_ce should be OBJ_id_ce.
4691 Also some ip-pda OIDs in crypto/objects/objects.txt were
4692 incorrect (cf. RFC 3039).
4693 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4695 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4696 returns early because it has nothing to do.
4697 [Andy Schneider <andy.schneider@bjss.co.uk>]
4699 *) [In 0.9.6c-engine release:]
4700 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4701 [Andy Schneider <andy.schneider@bjss.co.uk>]
4703 *) [In 0.9.6c-engine release:]
4704 Add support for Cryptographic Appliance's keyserver technology.
4705 (Use engine 'keyclient')
4706 [Cryptographic Appliances and Geoff Thorpe]
4708 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4709 is called via tools/c89.sh because arguments have to be
4710 rearranged (all '-L' options must appear before the first object
4712 [Richard Shapiro <rshapiro@abinitio.com>]
4714 *) [In 0.9.6c-engine release:]
4715 Add support for Broadcom crypto accelerator cards, backported
4717 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4719 *) [In 0.9.6c-engine release:]
4720 Add support for SureWare crypto accelerator cards from
4721 Baltimore Technologies. (Use engine 'sureware')
4722 [Baltimore Technologies and Mark Cox]
4724 *) [In 0.9.6c-engine release:]
4725 Add support for crypto accelerator cards from Accelerated
4726 Encryption Processing, www.aep.ie. (Use engine 'aep')
4727 [AEP Inc. and Mark Cox]
4729 *) Add a configuration entry for gcc on UnixWare.
4730 [Gary Benson <gbenson@redhat.com>]
4732 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4733 messages are stored in a single piece (fixed-length part and
4734 variable-length part combined) and fix various bugs found on the way.
4737 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4738 instead. BIO_gethostbyname() does not know what timeouts are
4739 appropriate, so entries would stay in cache even when they have
4741 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4743 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4744 faced with a pathologically small ClientHello fragment that does
4745 not contain client_version: Instead of aborting with an error,
4746 simply choose the highest available protocol version (i.e.,
4747 TLS 1.0 unless it is disabled). In practice, ClientHello
4748 messages are never sent like this, but this change gives us
4749 strictly correct behaviour at least for TLS.
4752 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4753 never resets s->method to s->ctx->method when called from within
4754 one of the SSL handshake functions.
4755 [Bodo Moeller; problem pointed out by Niko Baric]
4757 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4758 (sent using the client's version number) if client_version is
4759 smaller than the protocol version in use. Also change
4760 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4761 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4762 the client will at least see that alert.
4765 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4769 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4770 client receives HelloRequest while in a handshake.
4771 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4773 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4774 should end in 'break', not 'goto end' which circuments various
4775 cleanups done in state SSL_ST_OK. But session related stuff
4776 must be disabled for SSL_ST_OK in the case that we just sent a
4779 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4780 before just sending a HelloRequest.
4781 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4783 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4784 reveal whether illegal block cipher padding was found or a MAC
4785 verification error occured. (Neither SSLerr() codes nor alerts
4786 are directly visible to potential attackers, but the information
4787 may leak via logfiles.)
4789 Similar changes are not required for the SSL 2.0 implementation
4790 because the number of padding bytes is sent in clear for SSL 2.0,
4791 and the extra bytes are just ignored. However ssl/s2_pkt.c
4792 failed to verify that the purported number of padding bytes is in
4796 *) Add OpenUNIX-8 support including shared libraries
4797 (Boyd Lynn Gerber <gerberb@zenez.com>).
4800 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4801 'wristwatch attack' using huge encoding parameters (cf.
4802 James H. Manger's CRYPTO 2001 paper). Note that the
4803 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4804 encoding parameters and hence was not vulnerable.
4807 *) BN_sqr() bug fix.
4808 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4810 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4811 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4812 followed by modular reduction.
4813 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4815 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4816 equivalent based on BN_pseudo_rand() instead of BN_rand().
4819 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4820 This function was broken, as the check for a new client hello message
4821 to handle SGC did not allow these large messages.
4822 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4825 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4828 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4829 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
4832 *) Rework the configuration and shared library support for Tru64 Unix.
4833 The configuration part makes use of modern compiler features and
4834 still retains old compiler behavior for those that run older versions
4835 of the OS. The shared library support part includes a variant that
4836 uses the RPATH feature, and is available through the special
4837 configuration target "alpha-cc-rpath", which will never be selected
4839 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
4841 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
4842 with the same message size as in ssl3_get_certificate_request().
4843 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
4844 messages might inadvertently be reject as too long.
4845 [Petr Lampa <lampa@fee.vutbr.cz>]
4847 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
4850 *) Modified SSL library such that the verify_callback that has been set
4851 specificly for an SSL object with SSL_set_verify() is actually being
4852 used. Before the change, a verify_callback set with this function was
4853 ignored and the verify_callback() set in the SSL_CTX at the time of
4854 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
4855 to allow the necessary settings.
4858 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
4859 explicitly to NULL, as at least on Solaris 8 this seems not always to be
4860 done automatically (in contradiction to the requirements of the C
4861 standard). This made problems when used from OpenSSH.
4864 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
4865 dh->length and always used
4867 BN_rand_range(priv_key, dh->p).
4869 BN_rand_range() is not necessary for Diffie-Hellman, and this
4870 specific range makes Diffie-Hellman unnecessarily inefficient if
4871 dh->length (recommended exponent length) is much smaller than the
4872 length of dh->p. We could use BN_rand_range() if the order of
4873 the subgroup was stored in the DH structure, but we only have
4878 BN_rand(priv_key, l, ...)
4880 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
4886 RSA_eay_public_encrypt
4887 RSA_eay_private_decrypt
4888 RSA_eay_private_encrypt (signing)
4889 RSA_eay_public_decrypt (signature verification)
4891 (default implementations for RSA_public_encrypt,
4892 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
4893 always reject numbers >= n.
4896 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
4897 to synchronize access to 'locking_thread'. This is necessary on
4898 systems where access to 'locking_thread' (an 'unsigned long'
4899 variable) is not atomic.
4902 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
4903 *before* setting the 'crypto_lock_rand' flag. The previous code had
4904 a race condition if 0 is a valid thread ID.
4905 [Travis Vitek <vitek@roguewave.com>]
4907 *) Add support for shared libraries under Irix.
4908 [Albert Chin-A-Young <china@thewrittenword.com>]
4910 *) Add configuration option to build on Linux on both big-endian and
4912 [Ralf Baechle <ralf@uni-koblenz.de>]
4914 *) Add the possibility to create shared libraries on HP-UX.
4917 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
4919 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
4920 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
4921 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
4922 PRNG state recovery was possible based on the output of
4923 one PRNG request appropriately sized to gain knowledge on
4924 'md' followed by enough consecutive 1-byte PRNG requests
4925 to traverse all of 'state'.
4927 1. When updating 'md_local' (the current thread's copy of 'md')
4928 during PRNG output generation, hash all of the previous
4929 'md_local' value, not just the half used for PRNG output.
4931 2. Make the number of bytes from 'state' included into the hash
4932 independent from the number of PRNG bytes requested.
4934 The first measure alone would be sufficient to avoid
4935 Markku-Juhani's attack. (Actually it had never occurred
4936 to me that the half of 'md_local' used for chaining was the
4937 half from which PRNG output bytes were taken -- I had always
4938 assumed that the secret half would be used.) The second
4939 measure makes sure that additional data from 'state' is never
4940 mixed into 'md_local' in small portions; this heuristically
4941 further strengthens the PRNG.
4944 *) Fix crypto/bn/asm/mips3.s.
4947 *) When only the key is given to "enc", the IV is undefined. Print out
4948 an error message in this case.
4951 *) Handle special case when X509_NAME is empty in X509 printing routines.
4954 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
4955 positive and less than q.
4958 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
4959 used: it isn't thread safe and the add_lock_callback should handle
4961 [Paul Rose <Paul.Rose@bridge.com>]
4963 *) Verify that incoming data obeys the block size in
4964 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
4968 [Ulf Möller, Bodo Möller]
4970 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
4971 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
4972 when fixing the server behaviour for backwards-compatible 'client
4973 hello' messages. (Note that the attack is impractical against
4974 SSL 3.0 and TLS 1.0 anyway because length and version checking
4975 means that the probability of guessing a valid ciphertext is
4976 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
4979 Before 0.9.5, the countermeasure (hide the error by generating a
4980 random 'decryption result') did not work properly because
4981 ERR_clear_error() was missing, meaning that SSL_get_error() would
4982 detect the supposedly ignored error.
4984 Both problems are now fixed.
4987 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
4988 (previously it was 1024).
4991 *) Fix for compatibility mode trust settings: ignore trust settings
4992 unless some valid trust or reject settings are present.
4995 *) Fix for blowfish EVP: its a variable length cipher.
4998 *) Fix various bugs related to DSA S/MIME verification. Handle missing
4999 parameters in DSA public key structures and return an error in the
5000 DSA routines if parameters are absent.
5003 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5004 in the current directory if neither $RANDFILE nor $HOME was set.
5005 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5006 caused some confusion to Windows users who haven't defined $HOME.
5007 Thus RAND_file_name() is changed again: e_os.h can define a
5008 DEFAULT_HOME, which will be used if $HOME is not set.
5009 For Windows, we use "C:"; on other platforms, we still require
5010 environment variables.
5012 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5013 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5014 having multiple threads call RAND_poll() concurrently.
5017 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5018 combination of a flag and a thread ID variable.
5019 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5020 flag), *other* threads can enter ssleay_add_bytes without obeying
5021 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5022 that they do not hold after the first thread unsets add_do_not_lock).
5025 *) Change bctest again: '-x' expressions are not available in all
5029 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5031 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5032 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5034 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5035 the default extension for executables, if any. Also, make the perl
5036 scripts that use symlink() to test if it really exists and use "cp"
5037 if it doesn't. All this made OpenSSL compilable and installable in
5041 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5042 If SEQUENCE is length is indefinite just set c->slen to the total
5043 amount of data available.
5044 [Steve Henson, reported by shige@FreeBSD.org]
5045 [This change does not apply to 0.9.7.]
5047 *) Change bctest to avoid here-documents inside command substitution
5048 (workaround for FreeBSD /bin/sh bug).
5049 For compatibility with Ultrix, avoid shell functions (introduced
5050 in the bctest version that searches along $PATH).
5053 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5054 with des_encrypt() defined on some operating systems, like Solaris
5058 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5059 On the Importance of Eliminating Errors in Cryptographic
5060 Computations, J. Cryptology 14 (2001) 2, 101-119,
5061 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5064 *) MIPS assembler BIGNUM division bug fix.
5067 *) Disabled incorrect Alpha assembler code.
5070 *) Fix PKCS#7 decode routines so they correctly update the length
5071 after reading an EOC for the EXPLICIT tag.
5073 [This change does not apply to 0.9.7.]
5075 *) Fix bug in PKCS#12 key generation routines. This was triggered
5076 if a 3DES key was generated with a 0 initial byte. Include
5077 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5078 (but broken) behaviour.
5081 *) Enhance bctest to search for a working bc along $PATH and print
5083 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5085 *) Fix memory leaks in err.c: free err_data string if necessary;
5086 don't write to the wrong index in ERR_set_error_data.
5089 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5093 *) Replace rdtsc with _emit statements for VC++ version 5.
5094 [Jeremy Cooper <jeremy@baymoo.org>]
5096 *) Make it possible to reuse SSLv2 sessions.
5099 *) In copy_email() check for >= 0 as a return value for
5100 X509_NAME_get_index_by_NID() since 0 is a valid index.
5101 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5103 *) Avoid coredump with unsupported or invalid public keys by checking if
5104 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5105 PKCS7_verify() fails with non detached data.
5108 *) Don't use getenv in library functions when run as setuid/setgid.
5109 New function OPENSSL_issetugid().
5112 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5113 due to incorrect handling of multi-threading:
5115 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5117 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5119 3. Count how many times MemCheck_off() has been called so that
5120 nested use can be treated correctly. This also avoids
5121 inband-signalling in the previous code (which relied on the
5122 assumption that thread ID 0 is impossible).
5125 *) Add "-rand" option also to s_client and s_server.
5128 *) Fix CPU detection on Irix 6.x.
5129 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5130 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5132 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5135 [This change does not apply to 0.9.7.]
5137 *) Use the cached encoding of an X509_NAME structure rather than
5138 copying it. This is apparently the reason for the libsafe "errors"
5139 but the code is actually correct.
5142 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5143 Bleichenbacher's DSA attack.
5144 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
5145 to be set and top=0 forces the highest bit to be set; top=-1 is new
5146 and leaves the highest bit random.
5147 [Ulf Moeller, Bodo Moeller]
5149 *) In the NCONF_...-based implementations for CONF_... queries
5150 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
5151 a temporary CONF structure with the data component set to NULL
5152 (which gives segmentation faults in lh_retrieve).
5153 Instead, use NULL for the CONF pointer in CONF_get_string and
5154 CONF_get_number (which may use environment variables) and directly
5155 return NULL from CONF_get_section.
5158 *) Fix potential buffer overrun for EBCDIC.
5161 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
5162 keyUsage if basicConstraints absent for a CA.
5165 *) Make SMIME_write_PKCS7() write mail header values with a format that
5166 is more generally accepted (no spaces before the semicolon), since
5167 some programs can't parse those values properly otherwise. Also make
5168 sure BIO's that break lines after each write do not create invalid
5172 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
5173 macros previously used would not encode an empty SEQUENCE OF
5174 and break the signature.
5176 [This change does not apply to 0.9.7.]
5178 *) Zero the premaster secret after deriving the master secret in
5182 *) Add some EVP_add_digest_alias registrations (as found in
5183 OpenSSL_add_all_digests()) to SSL_library_init()
5184 aka OpenSSL_add_ssl_algorithms(). This provides improved
5185 compatibility with peers using X.509 certificates
5186 with unconventional AlgorithmIdentifier OIDs.
5189 *) Fix for Irix with NO_ASM.
5190 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5192 *) ./config script fixes.
5193 [Ulf Moeller, Richard Levitte]
5195 *) Fix 'openssl passwd -1'.
5198 *) Change PKCS12_key_gen_asc() so it can cope with non null
5199 terminated strings whose length is passed in the passlen
5200 parameter, for example from PEM callbacks. This was done
5201 by adding an extra length parameter to asc2uni().
5202 [Steve Henson, reported by <oddissey@samsung.co.kr>]
5204 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
5205 call failed, free the DSA structure.
5208 *) Fix to uni2asc() to cope with zero length Unicode strings.
5209 These are present in some PKCS#12 files.
5212 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
5213 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
5214 when writing a 32767 byte record.
5215 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
5217 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
5218 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
5220 (RSA objects have a reference count access to which is protected
5221 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
5222 so they are meant to be shared between threads.)
5223 [Bodo Moeller, Geoff Thorpe; original patch submitted by
5224 "Reddie, Steven" <Steven.Reddie@ca.com>]
5226 *) Fix a deadlock in CRYPTO_mem_leaks().
5229 *) Use better test patterns in bntest.
5232 *) rand_win.c fix for Borland C.
5235 *) BN_rshift bugfix for n == 0.
5238 *) Add a 'bctest' script that checks for some known 'bc' bugs
5239 so that 'make test' does not abort just because 'bc' is broken.
5242 *) Store verify_result within SSL_SESSION also for client side to
5243 avoid potential security hole. (Re-used sessions on the client side
5244 always resulted in verify_result==X509_V_OK, not using the original
5245 result of the server certificate verification.)
5248 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
5249 SSL3_RT_APPLICATION_DATA, return 0.
5250 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
5254 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
5255 releases, have been re-implemented by renaming the previous
5256 implementations of ssl2_read and ssl3_read to ssl2_read_internal
5257 and ssl3_read_internal, respectively, and adding 'peek' parameters
5258 to them. The new ssl[23]_{read,peek} functions are calls to
5259 ssl[23]_read_internal with the 'peek' flag set appropriately.
5260 A 'peek' parameter has also been added to ssl3_read_bytes, which
5261 does the actual work for ssl3_read_internal.
5264 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
5265 the method-specific "init()" handler. Also clean up ex_data after
5266 calling the method-specific "finish()" handler. Previously, this was
5267 happening the other way round.
5270 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
5271 The previous value, 12, was not always sufficient for BN_mod_exp().
5274 *) Make sure that shared libraries get the internal name engine with
5275 the full version number and not just 0. This should mark the
5276 shared libraries as not backward compatible. Of course, this should
5277 be changed again when we can guarantee backward binary compatibility.
5280 *) Fix typo in get_cert_by_subject() in by_dir.c
5281 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
5283 *) Rework the system to generate shared libraries:
5285 - Make note of the expected extension for the shared libraries and
5286 if there is a need for symbolic links from for example libcrypto.so.0
5287 to libcrypto.so.0.9.7. There is extended info in Configure for
5290 - Make as few rebuilds of the shared libraries as possible.
5292 - Still avoid linking the OpenSSL programs with the shared libraries.
5294 - When installing, install the shared libraries separately from the
5298 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
5300 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
5301 and not in SSL_clear because the latter is also used by the
5302 accept/connect functions; previously, the settings made by
5303 SSL_set_read_ahead would be lost during the handshake.
5304 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
5306 *) Correct util/mkdef.pl to be selective about disabled algorithms.
5307 Previously, it would create entries for disableed algorithms no
5311 *) Added several new manual pages for SSL_* function.
5314 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
5316 *) In ssl23_get_client_hello, generate an error message when faced
5317 with an initial SSL 3.0/TLS record that is too small to contain the
5318 first two bytes of the ClientHello message, i.e. client_version.
5319 (Note that this is a pathologic case that probably has never happened
5320 in real life.) The previous approach was to use the version number
5321 from the record header as a substitute; but our protocol choice
5322 should not depend on that one because it is not authenticated
5323 by the Finished messages.
5326 *) More robust randomness gathering functions for Windows.
5327 [Jeffrey Altman <jaltman@columbia.edu>]
5329 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
5330 not set then we don't setup the error code for issuer check errors
5331 to avoid possibly overwriting other errors which the callback does
5332 handle. If an application does set the flag then we assume it knows
5333 what it is doing and can handle the new informational codes
5337 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
5338 a general "ANY" type, as such it should be able to decode anything
5339 including tagged types. However it didn't check the class so it would
5340 wrongly interpret tagged types in the same way as their universal
5341 counterpart and unknown types were just rejected. Changed so that the
5342 tagged and unknown types are handled in the same way as a SEQUENCE:
5343 that is the encoding is stored intact. There is also a new type
5344 "V_ASN1_OTHER" which is used when the class is not universal, in this
5345 case we have no idea what the actual type is so we just lump them all
5349 *) On VMS, stdout may very well lead to a file that is written to
5350 in a record-oriented fashion. That means that every write() will
5351 write a separate record, which will be read separately by the
5352 programs trying to read from it. This can be very confusing.
5354 The solution is to put a BIO filter in the way that will buffer
5355 text until a linefeed is reached, and then write everything a
5356 line at a time, so every record written will be an actual line,
5357 not chunks of lines and not (usually doesn't happen, but I've
5358 seen it once) several lines in one record. BIO_f_linebuffer() is
5361 Currently, it's a VMS-only method, because that's where it has
5362 been tested well enough.
5365 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
5366 it can return incorrect results.
5367 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
5368 but it was in 0.9.6-beta[12].)
5371 *) Disable the check for content being present when verifying detached
5372 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5373 include zero length content when signing messages.
5376 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5377 BIO_ctrl (for BIO pairs).
5380 *) Add DSO method for VMS.
5383 *) Bug fix: Montgomery multiplication could produce results with the
5387 *) Add RPM specification openssl.spec and modify it to build three
5388 packages. The default package contains applications, application
5389 documentation and run-time libraries. The devel package contains
5390 include files, static libraries and function documentation. The
5391 doc package contains the contents of the doc directory. The original
5392 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5395 *) Add a large number of documentation files for many SSL routines.
5396 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5398 *) Add a configuration entry for Sony News 4.
5399 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5401 *) Don't set the two most significant bits to one when generating a
5402 random number < q in the DSA library.
5405 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5406 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5407 the underlying transport is blocking) if a handshake took place.
5408 (The default behaviour is needed by applications such as s_client
5409 and s_server that use select() to determine when to use SSL_read;
5410 but for applications that know in advance when to expect data, it
5411 just makes things more complicated.)
5414 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5418 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5419 work better on such systems.
5420 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5422 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5423 Update PKCS12_parse() so it copies the friendlyName and the
5424 keyid to the certificates aux info.
5427 *) Fix bug in PKCS7_verify() which caused an infinite loop
5428 if there was more than one signature.
5429 [Sven Uszpelkat <su@celocom.de>]
5431 *) Major change in util/mkdef.pl to include extra information
5432 about each symbol, as well as presentig variables as well
5433 as functions. This change means that there's n more need
5434 to rebuild the .num files when some algorithms are excluded.
5437 *) Allow the verify time to be set by an application,
5438 rather than always using the current time.
5441 *) Phase 2 verify code reorganisation. The certificate
5442 verify code now looks up an issuer certificate by a
5443 number of criteria: subject name, authority key id
5444 and key usage. It also verifies self signed certificates
5445 by the same criteria. The main comparison function is
5446 X509_check_issued() which performs these checks.
5448 Lot of changes were necessary in order to support this
5449 without completely rewriting the lookup code.
5451 Authority and subject key identifier are now cached.
5453 The LHASH 'certs' is X509_STORE has now been replaced
5454 by a STACK_OF(X509_OBJECT). This is mainly because an
5455 LHASH can't store or retrieve multiple objects with
5456 the same hash value.
5458 As a result various functions (which were all internal
5459 use only) have changed to handle the new X509_STORE
5460 structure. This will break anything that messed round
5461 with X509_STORE internally.
5463 The functions X509_STORE_add_cert() now checks for an
5464 exact match, rather than just subject name.
5466 The X509_STORE API doesn't directly support the retrieval
5467 of multiple certificates matching a given criteria, however
5468 this can be worked round by performing a lookup first
5469 (which will fill the cache with candidate certificates)
5470 and then examining the cache for matches. This is probably
5471 the best we can do without throwing out X509_LOOKUP
5472 entirely (maybe later...).
5474 The X509_VERIFY_CTX structure has been enhanced considerably.
5476 All certificate lookup operations now go via a get_issuer()
5477 callback. Although this currently uses an X509_STORE it
5478 can be replaced by custom lookups. This is a simple way
5479 to bypass the X509_STORE hackery necessary to make this
5480 work and makes it possible to use more efficient techniques
5481 in future. A very simple version which uses a simple
5482 STACK for its trusted certificate store is also provided
5483 using X509_STORE_CTX_trusted_stack().
5485 The verify_cb() and verify() callbacks now have equivalents
5486 in the X509_STORE_CTX structure.
5488 X509_STORE_CTX also has a 'flags' field which can be used
5489 to customise the verify behaviour.
5492 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5493 excludes S/MIME capabilities.
5496 *) When a certificate request is read in keep a copy of the
5497 original encoding of the signed data and use it when outputing
5498 again. Signatures then use the original encoding rather than
5499 a decoded, encoded version which may cause problems if the
5500 request is improperly encoded.
5503 *) For consistency with other BIO_puts implementations, call
5504 buffer_write(b, ...) directly in buffer_puts instead of calling
5507 In BIO_puts, increment b->num_write as in BIO_write.
5508 [Peter.Sylvester@EdelWeb.fr]
5510 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5511 BN_zero, we may not return a BIGNUM with an array consisting of
5515 *) Avoid calling abort() from within the library when problems are
5516 detected, except if preprocessor symbols have been defined
5517 (such as REF_CHECK, BN_DEBUG etc.).
5520 *) New openssl application 'rsautl'. This utility can be
5521 used for low level RSA operations. DER public key
5522 BIO/fp routines also added.
5525 *) New Configure entry and patches for compiling on QNX 4.
5526 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5528 *) A demo state-machine implementation was sponsored by
5529 Nuron (http://www.nuron.com/) and is now available in
5530 demos/state_machine.
5533 *) New options added to the 'dgst' utility for signature
5534 generation and verification.
5537 *) Unrecognized PKCS#7 content types are now handled via a
5538 catch all ASN1_TYPE structure. This allows unsupported
5539 types to be stored as a "blob" and an application can
5540 encode and decode it manually.
5543 *) Fix various signed/unsigned issues to make a_strex.c
5545 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5547 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5548 length if passed a buffer. ASN1_INTEGER_to_BN failed
5549 if passed a NULL BN and its argument was negative.
5550 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5552 *) Modification to PKCS#7 encoding routines to output definite
5553 length encoding. Since currently the whole structures are in
5554 memory there's not real point in using indefinite length
5555 constructed encoding. However if OpenSSL is compiled with
5556 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5559 *) Added BIO_vprintf() and BIO_vsnprintf().
5562 *) Added more prefixes to parse for in the the strings written
5563 through a logging bio, to cover all the levels that are available
5564 through syslog. The prefixes are now:
5566 PANIC, EMERG, EMR => LOG_EMERG
5567 ALERT, ALR => LOG_ALERT
5568 CRIT, CRI => LOG_CRIT
5569 ERROR, ERR => LOG_ERR
5570 WARNING, WARN, WAR => LOG_WARNING
5571 NOTICE, NOTE, NOT => LOG_NOTICE
5572 INFO, INF => LOG_INFO
5573 DEBUG, DBG => LOG_DEBUG
5575 and as before, if none of those prefixes are present at the
5576 beginning of the string, LOG_ERR is chosen.
5578 On Win32, the LOG_* levels are mapped according to this:
5580 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5581 LOG_WARNING => EVENTLOG_WARNING_TYPE
5582 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5586 *) Made it possible to reconfigure with just the configuration
5587 argument "reconf" or "reconfigure". The command line arguments
5588 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5589 and are retrieved from there when reconfiguring.
5593 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5595 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5598 *) The obj_dat.pl script was messing up the sorting of object
5599 names. The reason was that it compared the quoted version
5600 of strings as a result "OCSP" > "OCSP Signing" because
5601 " > SPACE. Changed script to store unquoted versions of
5602 names and add quotes on output. It was also omitting some
5603 names from the lookup table if they were given a default
5604 value (that is if SN is missing it is given the same
5605 value as LN and vice versa), these are now added on the
5606 grounds that if an object has a name we should be able to
5607 look it up. Finally added warning output when duplicate
5608 short or long names are found.
5611 *) Changes needed for Tandem NSK.
5612 [Scott Uroff <scott@xypro.com>]
5614 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5615 RSA_padding_check_SSLv23(), special padding was never detected
5616 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5617 version rollback attacks was not effective.
5619 In s23_clnt.c, don't use special rollback-attack detection padding
5620 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5621 client; similarly, in s23_srvr.c, don't do the rollback check if
5622 SSL 2.0 is the only protocol enabled in the server.
5625 *) Make it possible to get hexdumps of unprintable data with 'openssl
5626 asn1parse'. By implication, the functions ASN1_parse_dump() and
5627 BIO_dump_indent() are added.
5630 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5631 these print out strings and name structures based on various
5632 flags including RFC2253 support and proper handling of
5633 multibyte characters. Added options to the 'x509' utility
5634 to allow the various flags to be set.
5637 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5638 Also change the functions X509_cmp_current_time() and
5639 X509_gmtime_adj() work with an ASN1_TIME structure,
5640 this will enable certificates using GeneralizedTime in validity
5641 dates to be checked.
5644 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5645 negative public key encodings) on by default,
5646 NO_NEG_PUBKEY_BUG can be set to disable it.
5649 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5650 content octets. An i2c_ASN1_OBJECT is unnecessary because
5651 the encoding can be trivially obtained from the structure.
5654 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5655 not read locks (CRYPTO_r_[un]lock).
5658 *) A first attempt at creating official support for shared
5659 libraries through configuration. I've kept it so the
5660 default is static libraries only, and the OpenSSL programs
5661 are always statically linked for now, but there are
5662 preparations for dynamic linking in place.
5663 This has been tested on Linux and Tru64.
5666 *) Randomness polling function for Win9x, as described in:
5667 Peter Gutmann, Software Generation of Practically Strong
5671 *) Fix so PRNG is seeded in req if using an already existing
5675 *) New options to smime application. -inform and -outform
5676 allow alternative formats for the S/MIME message including
5677 PEM and DER. The -content option allows the content to be
5678 specified separately. This should allow things like Netscape
5679 form signing output easier to verify.
5682 *) Fix the ASN1 encoding of tags using the 'long form'.
5685 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5686 STRING types. These convert content octets to and from the
5687 underlying type. The actual tag and length octets are
5688 already assumed to have been read in and checked. These
5689 are needed because all other string types have virtually
5690 identical handling apart from the tag. By having versions
5691 of the ASN1 functions that just operate on content octets
5692 IMPLICIT tagging can be handled properly. It also allows
5693 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5694 and ASN1_INTEGER are identical apart from the tag.
5697 *) Change the handling of OID objects as follows:
5699 - New object identifiers are inserted in objects.txt, following
5700 the syntax given in objects.README.
5701 - objects.pl is used to process obj_mac.num and create a new
5703 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5706 This is currently kind of a hack, and the perl code in objects.pl
5707 isn't very elegant, but it works as I intended. The simplest way
5708 to check that it worked correctly is to look in obj_dat.h and
5709 check the array nid_objs and make sure the objects haven't moved
5710 around (this is important!). Additions are OK, as well as
5711 consistent name changes.
5714 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5717 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5718 The given file adds to whatever has already been seeded into the
5719 random pool through the RANDFILE configuration file option or
5720 environment variable, or the default random state file.
5723 *) mkstack.pl now sorts each macro group into lexical order.
5724 Previously the output order depended on the order the files
5725 appeared in the directory, resulting in needless rewriting
5729 *) Patches to make OpenSSL compile under Win32 again. Mostly
5730 work arounds for the VC++ problem that it treats func() as
5731 func(void). Also stripped out the parts of mkdef.pl that
5732 added extra typesafe functions: these no longer exist.
5735 *) Reorganisation of the stack code. The macros are now all
5736 collected in safestack.h . Each macro is defined in terms of
5737 a "stack macro" of the form SKM_<name>(type, a, b). The
5738 DEBUG_SAFESTACK is now handled in terms of function casts,
5739 this has the advantage of retaining type safety without the
5740 use of additional functions. If DEBUG_SAFESTACK is not defined
5741 then the non typesafe macros are used instead. Also modified the
5742 mkstack.pl script to handle the new form. Needs testing to see
5743 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5744 the default if no major problems. Similar behaviour for ASN1_SET_OF
5745 and PKCS12_STACK_OF.
5748 *) When some versions of IIS use the 'NET' form of private key the
5749 key derivation algorithm is different. Normally MD5(password) is
5750 used as a 128 bit RC4 key. In the modified case
5751 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5752 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5753 as the old Netscape_RSA functions except they have an additional
5754 'sgckey' parameter which uses the modified algorithm. Also added
5755 an -sgckey command line option to the rsa utility. Thanks to
5756 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5757 algorithm to openssl-dev.
5760 *) The evp_local.h macros were using 'c.##kname' which resulted in
5761 invalid expansion on some systems (SCO 5.0.5 for example).
5762 Corrected to 'c.kname'.
5763 [Phillip Porch <root@theporch.com>]
5765 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5766 a STACK of email addresses from a certificate or request, these look
5767 in the subject name and the subject alternative name extensions and
5768 omit any duplicate addresses.
5771 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5772 This makes DSA verification about 2 % faster.
5775 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5776 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5777 plus overhead for 1024 bit moduli).
5778 This makes exponentiations about 0.5 % faster for 1024 bit
5779 exponents (as measured by "openssl speed rsa2048").
5782 *) Rename memory handling macros to avoid conflicts with other
5784 Malloc => OPENSSL_malloc
5785 Malloc_locked => OPENSSL_malloc_locked
5786 Realloc => OPENSSL_realloc
5787 Free => OPENSSL_free
5790 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5791 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5794 *) CygWin32 support.
5795 [John Jarvie <jjarvie@newsguy.com>]
5797 *) The type-safe stack code has been rejigged. It is now only compiled
5798 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5799 by default all type-specific stack functions are "#define"d back to
5800 standard stack functions. This results in more streamlined output
5801 but retains the type-safety checking possibilities of the original
5805 *) The STACK code has been cleaned up, and certain type declarations
5806 that didn't make a lot of sense have been brought in line. This has
5807 also involved a cleanup of sorts in safestack.h to more correctly
5808 map type-safe stack functions onto their plain stack counterparts.
5809 This work has also resulted in a variety of "const"ifications of
5810 lots of the code, especially "_cmp" operations which should normally
5811 be prototyped with "const" parameters anyway.
5814 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5815 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5816 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5817 where all of 'md' is used each time the PRNG is used, but 'state'
5818 is used only indexed by a cyclic counter. As entropy may not be
5819 well distributed from the beginning, 'md' is important as a
5820 chaining variable. However, the output function chains only half
5821 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5822 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5823 in all of 'state' being rewritten, with the new values depending
5824 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5827 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5828 the handshake is continued after ssl_verify_cert_chain();
5829 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5830 can lead to 'unexplainable' connection aborts later.
5831 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
5833 *) Major EVP API cipher revision.
5834 Add hooks for extra EVP features. This allows various cipher
5835 parameters to be set in the EVP interface. Support added for variable
5836 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
5837 setting of RC2 and RC5 parameters.
5839 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
5842 Remove lots of duplicated code from the EVP library. For example *every*
5843 cipher init() function handles the 'iv' in the same way according to the
5844 cipher mode. They also all do nothing if the 'key' parameter is NULL and
5845 for CFB and OFB modes they zero ctx->num.
5847 New functionality allows removal of S/MIME code RC2 hack.
5849 Most of the routines have the same form and so can be declared in terms
5852 By shifting this to the top level EVP_CipherInit() it can be removed from
5853 all individual ciphers. If the cipher wants to handle IVs or keys
5854 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
5857 Change lots of functions like EVP_EncryptUpdate() to now return a
5858 value: although software versions of the algorithms cannot fail
5859 any installed hardware versions can.
5862 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
5863 this option is set, tolerate broken clients that send the negotiated
5864 protocol version number instead of the requested protocol version
5868 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
5869 i.e. non-zero for export ciphersuites, zero otherwise.
5870 Previous versions had this flag inverted, inconsistent with
5871 rsa_tmp_cb (..._TMP_RSA_CB).
5872 [Bodo Moeller; problem reported by Amit Chopra]
5874 *) Add missing DSA library text string. Work around for some IIS
5875 key files with invalid SEQUENCE encoding.
5878 *) Add a document (doc/standards.txt) that list all kinds of standards
5879 and so on that are implemented in OpenSSL.
5882 *) Enhance c_rehash script. Old version would mishandle certificates
5883 with the same subject name hash and wouldn't handle CRLs at all.
5884 Added -fingerprint option to crl utility, to support new c_rehash
5888 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
5891 *) Fix for SSL server purpose checking. Server checking was
5892 rejecting certificates which had extended key usage present
5893 but no ssl client purpose.
5894 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
5896 *) Make PKCS#12 code work with no password. The PKCS#12 spec
5897 is a little unclear about how a blank password is handled.
5898 Since the password in encoded as a BMPString with terminating
5899 double NULL a zero length password would end up as just the
5900 double NULL. However no password at all is different and is
5901 handled differently in the PKCS#12 key generation code. NS
5902 treats a blank password as zero length. MSIE treats it as no
5903 password on export: but it will try both on import. We now do
5904 the same: PKCS12_parse() tries zero length and no password if
5905 the password is set to "" or NULL (NULL is now a valid password:
5906 it wasn't before) as does the pkcs12 application.
5909 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
5910 perror when PEM_read_bio_X509_REQ fails, the error message must
5911 be obtained from the error queue.
5914 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
5915 it in ERR_remove_state if appropriate, and change ERR_get_state
5916 accordingly to avoid race conditions (this is necessary because
5917 thread_hash is no longer constant once set).
5920 *) Bugfix for linux-elf makefile.one.
5923 *) RSA_get_default_method() will now cause a default
5924 RSA_METHOD to be chosen if one doesn't exist already.
5925 Previously this was only set during a call to RSA_new()
5926 or RSA_new_method(NULL) meaning it was possible for
5927 RSA_get_default_method() to return NULL.
5930 *) Added native name translation to the existing DSO code
5931 that will convert (if the flag to do so is set) filenames
5932 that are sufficiently small and have no path information
5933 into a canonical native form. Eg. "blah" converted to
5934 "libblah.so" or "blah.dll" etc.
5937 *) New function ERR_error_string_n(e, buf, len) which is like
5938 ERR_error_string(e, buf), but writes at most 'len' bytes
5939 including the 0 terminator. For ERR_error_string_n, 'buf'
5941 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
5943 *) CONF library reworked to become more general. A new CONF
5944 configuration file reader "class" is implemented as well as a
5945 new functions (NCONF_*, for "New CONF") to handle it. The now
5946 old CONF_* functions are still there, but are reimplemented to
5947 work in terms of the new functions. Also, a set of functions
5948 to handle the internal storage of the configuration data is
5949 provided to make it easier to write new configuration file
5950 reader "classes" (I can definitely see something reading a
5951 configuration file in XML format, for example), called _CONF_*,
5952 or "the configuration storage API"...
5954 The new configuration file reading functions are:
5956 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
5957 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
5959 NCONF_default, NCONF_WIN32
5961 NCONF_dump_fp, NCONF_dump_bio
5963 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
5964 NCONF_new creates a new CONF object. This works in the same way
5965 as other interfaces in OpenSSL, like the BIO interface.
5966 NCONF_dump_* dump the internal storage of the configuration file,
5967 which is useful for debugging. All other functions take the same
5968 arguments as the old CONF_* functions wth the exception of the
5969 first that must be a `CONF *' instead of a `LHASH *'.
5971 To make it easer to use the new classes with the old CONF_* functions,
5972 the function CONF_set_default_method is provided.
5975 *) Add '-tls1' option to 'openssl ciphers', which was already
5976 mentioned in the documentation but had not been implemented.
5977 (This option is not yet really useful because even the additional
5978 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
5981 *) Initial DSO code added into libcrypto for letting OpenSSL (and
5982 OpenSSL-based applications) load shared libraries and bind to
5983 them in a portable way.
5984 [Geoff Thorpe, with contributions from Richard Levitte]
5986 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
5988 *) Make sure _lrotl and _lrotr are only used with MSVC.
5990 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
5991 (the default implementation of RAND_status).
5993 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
5994 to '-clrext' (= clear extensions), as intended and documented.
5995 [Bodo Moeller; inconsistency pointed out by Michael Attili
5998 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
5999 was larger than the MD block size.
6000 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6002 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6003 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6004 using the passed key: if the passed key was a private key the result
6005 of X509_print(), for example, would be to print out all the private key
6009 *) des_quad_cksum() byte order bug fix.
6010 [Ulf Möller, using the problem description in krb4-0.9.7, where
6011 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6013 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6015 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6017 *) For easily testing in shell scripts whether some command
6018 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6019 returns with exit code 0 iff no command of the given name is available.
6020 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6021 the output goes to stdout and nothing is printed to stderr.
6022 Additional arguments are always ignored.
6024 Since for each cipher there is a command of the same name,
6025 the 'no-cipher' compilation switches can be tested this way.
6027 ('openssl no-XXX' is not able to detect pseudo-commands such
6028 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6031 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6034 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6035 is set; it will be thrown away anyway because each handshake creates
6037 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6038 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6039 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6040 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6043 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6044 'Q' and 'R' lose their special meanings (quit/renegotiate).
6045 This is part of what -quiet does; unlike -quiet, -ign_eof
6046 does not suppress any output.
6049 *) Add compatibility options to the purpose and trust code. The
6050 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6051 accepts a certificate or CA, this was the previous behaviour,
6052 with all the associated security issues.
6054 X509_TRUST_COMPAT is the old trust behaviour: only and
6055 automatically trust self signed roots in certificate store. A
6056 new trust setting X509_TRUST_DEFAULT is used to specify that
6057 a purpose has no associated trust setting and it should instead
6058 use the value in the default purpose.
6061 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6062 and fix a memory leak.
6065 *) In util/mkerr.pl (which implements 'make errors'), preserve
6066 reason strings from the previous version of the .c file, as
6067 the default to have only downcase letters (and digits) in
6068 automatically generated reasons codes is not always appropriate.
6071 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6072 using strerror. Previously, ERR_reason_error_string() returned
6073 library names as reason strings for SYSerr; but SYSerr is a special
6074 case where small numbers are errno values, not library numbers.
6077 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6078 converts DSA parameters into DH parameters. (When creating parameters,
6079 DSA_generate_parameters is used.)
6082 *) Include 'length' (recommended exponent length) in C code generated
6083 by 'openssl dhparam -C'.
6086 *) The second argument to set_label in perlasm was already being used
6087 so couldn't be used as a "file scope" flag. Moved to third argument
6091 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6092 instead of RAND_bytes for encryption IVs and salts.
6095 *) Include RAND_status() into RAND_METHOD instead of implementing
6096 it only for md_rand.c Otherwise replacing the PRNG by calling
6097 RAND_set_rand_method would be impossible.
6100 *) Don't let DSA_generate_key() enter an infinite loop if the random
6101 number generation fails.
6104 *) New 'rand' application for creating pseudo-random output.
6107 *) Added configuration support for Linux/IA64
6108 [Rolf Haberrecker <rolf@suse.de>]
6110 *) Assembler module support for Mingw32.
6113 *) Shared library support for HPUX (in shlib/).
6114 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6116 *) Shared library support for Solaris gcc.
6117 [Lutz Behnke <behnke@trustcenter.de>]
6119 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6121 *) PKCS7_encrypt() was adding text MIME headers twice because they
6122 were added manually and by SMIME_crlf_copy().
6125 *) In bntest.c don't call BN_rand with zero bits argument.
6126 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6128 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6129 case was implemented. This caused BN_div_recp() to fail occasionally.
6132 *) Add an optional second argument to the set_label() in the perl
6133 assembly language builder. If this argument exists and is set
6134 to 1 it signals that the assembler should use a symbol whose
6135 scope is the entire file, not just the current function. This
6136 is needed with MASM which uses the format label:: for this scope.
6137 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6139 *) Change the ASN1 types so they are typedefs by default. Before
6140 almost all types were #define'd to ASN1_STRING which was causing
6141 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
6145 *) Change names of new functions to the new get1/get0 naming
6146 convention: After 'get1', the caller owns a reference count
6147 and has to call ..._free; 'get0' returns a pointer to some
6148 data structure without incrementing reference counters.
6149 (Some of the existing 'get' functions increment a reference
6150 counter, some don't.)
6151 Similarly, 'set1' and 'add1' functions increase reference
6152 counters or duplicate objects.
6155 *) Allow for the possibility of temp RSA key generation failure:
6156 the code used to assume it always worked and crashed on failure.
6159 *) Fix potential buffer overrun problem in BIO_printf().
6160 [Ulf Möller, using public domain code by Patrick Powell; problem
6161 pointed out by David Sacerdote <das33@cornell.edu>]
6163 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
6164 RAND_egd() and RAND_status(). In the command line application,
6165 the EGD socket can be specified like a seed file using RANDFILE
6169 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
6170 Some CAs (e.g. Verisign) distribute certificates in this form.
6173 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
6174 list to exclude them. This means that no special compilation option
6175 is needed to use anonymous DH: it just needs to be included in the
6179 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
6180 EVP_MD_type. The old functionality is available in a new macro called
6181 EVP_MD_md(). Change code that uses it and update docs.
6184 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
6185 where the 'void *' argument is replaced by a function pointer argument.
6186 Previously 'void *' was abused to point to functions, which works on
6187 many platforms, but is not correct. As these functions are usually
6188 called by macros defined in OpenSSL header files, most source code
6189 should work without changes.
6192 *) <openssl/opensslconf.h> (which is created by Configure) now contains
6193 sections with information on -D... compiler switches used for
6194 compiling the library so that applications can see them. To enable
6195 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
6196 must be defined. E.g.,
6197 #define OPENSSL_ALGORITHM_DEFINES
6198 #include <openssl/opensslconf.h>
6199 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
6200 [Richard Levitte, Ulf and Bodo Möller]
6202 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
6206 *) Change the 'other' type in certificate aux info to a STACK_OF
6207 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
6208 the required ASN1 format: arbitrary types determined by an OID.
6211 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
6212 argument to 'req'. This is not because the function is newer or
6213 better than others it just uses the work 'NEW' in the certificate
6214 request header lines. Some software needs this.
6217 *) Reorganise password command line arguments: now passwords can be
6218 obtained from various sources. Delete the PEM_cb function and make
6219 it the default behaviour: i.e. if the callback is NULL and the
6220 usrdata argument is not NULL interpret it as a null terminated pass
6221 phrase. If usrdata and the callback are NULL then the pass phrase
6222 is prompted for as usual.
6225 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
6226 the support is automatically enabled. The resulting binaries will
6227 autodetect the card and use it if present.
6228 [Ben Laurie and Compaq Inc.]
6230 *) Work around for Netscape hang bug. This sends certificate request
6231 and server done in one record. Since this is perfectly legal in the
6232 SSL/TLS protocol it isn't a "bug" option and is on by default. See
6233 the bugs/SSLv3 entry for more info.
6236 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
6239 *) Add -rand argument to smime and pkcs12 applications and read/write
6243 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
6246 *) Add command line password options to the remaining applications.
6249 *) Bug fix for BN_div_recp() for numerators with an even number of
6253 *) More tests in bntest.c, and changed test_bn output.
6256 *) ./config recognizes MacOS X now.
6259 *) Bug fix for BN_div() when the first words of num and divsor are
6260 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
6263 *) Add support for various broken PKCS#8 formats, and command line
6264 options to produce them.
6267 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
6268 get temporary BIGNUMs from a BN_CTX.
6271 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
6275 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
6276 include a #define from the old name to the new. The original intent
6277 was that statically linked binaries could for example just call
6278 SSLeay_add_all_ciphers() to just add ciphers to the table and not
6279 link with digests. This never worked becayse SSLeay_add_all_digests()
6280 and SSLeay_add_all_ciphers() were in the same source file so calling
6281 one would link with the other. They are now in separate source files.
6284 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
6287 *) Use a less unusual form of the Miller-Rabin primality test (it used
6288 a binary algorithm for exponentiation integrated into the Miller-Rabin
6289 loop, our standard modexp algorithms are faster).
6292 *) Support for the EBCDIC character set completed.
6293 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
6295 *) Source code cleanups: use const where appropriate, eliminate casts,
6296 use void * instead of char * in lhash.
6299 *) Bugfix: ssl3_send_server_key_exchange was not restartable
6300 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
6301 this the server could overwrite ephemeral keys that the client
6305 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
6306 using 50 iterations of the Rabin-Miller test.
6308 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
6309 iterations of the Rabin-Miller test as required by the appendix
6310 to FIPS PUB 186[-1]) instead of DSA_is_prime.
6311 As BN_is_prime_fasttest includes trial division, DSA parameter
6312 generation becomes much faster.
6314 This implies a change for the callback functions in DSA_is_prime
6315 and DSA_generate_parameters: The callback function is called once
6316 for each positive witness in the Rabin-Miller test, not just
6317 occasionally in the inner loop; and the parameters to the
6318 callback function now provide an iteration count for the outer
6319 loop rather than for the current invocation of the inner loop.
6320 DSA_generate_parameters additionally can call the callback
6321 function with an 'iteration count' of -1, meaning that a
6322 candidate has passed the trial division test (when q is generated
6323 from an application-provided seed, trial division is skipped).
6326 *) New function BN_is_prime_fasttest that optionally does trial
6327 division before starting the Rabin-Miller test and has
6328 an additional BN_CTX * argument (whereas BN_is_prime always
6329 has to allocate at least one BN_CTX).
6330 'callback(1, -1, cb_arg)' is called when a number has passed the
6331 trial division stage.
6334 *) Fix for bug in CRL encoding. The validity dates weren't being handled
6338 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
6341 *) New function BN_pseudo_rand().
6344 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
6345 bignum version of BN_from_montgomery() with the working code from
6346 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
6350 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
6351 made it impossible to use the same SSL_SESSION data structure in
6352 SSL2 clients in multiple threads.
6355 *) The return value of RAND_load_file() no longer counts bytes obtained
6356 by stat(). RAND_load_file(..., -1) is new and uses the complete file
6357 to seed the PRNG (previously an explicit byte count was required).
6358 [Ulf Möller, Bodo Möller]
6360 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
6361 used (char *) instead of (void *) and had casts all over the place.
6364 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
6367 *) Retain source code compatibility for BN_prime_checks macro:
6368 BN_is_prime(..., BN_prime_checks, ...) now uses
6369 BN_prime_checks_for_size to determine the appropriate number of
6370 Rabin-Miller iterations.
6373 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6374 DH_CHECK_P_NOT_SAFE_PRIME.
6375 (Check if this is true? OpenPGP calls them "strong".)
6378 *) Merge the functionality of "dh" and "gendh" programs into a new program
6379 "dhparam". The old programs are retained for now but will handle DH keys
6380 (instead of parameters) in future.
6383 *) Make the ciphers, s_server and s_client programs check the return values
6384 when a new cipher list is set.
6387 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6388 ciphers. Before when the 56bit ciphers were enabled the sorting was
6391 The syntax for the cipher sorting has been extended to support sorting by
6392 cipher-strength (using the strength_bits hard coded in the tables).
6393 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6395 Fix a bug in the cipher-command parser: when supplying a cipher command
6396 string with an "undefined" symbol (neither command nor alphanumeric
6397 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6398 an error is flagged.
6400 Due to the strength-sorting extension, the code of the
6401 ssl_create_cipher_list() function was completely rearranged. I hope that
6402 the readability was also increased :-)
6403 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6405 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6406 for the first serial number and places 2 in the serial number file. This
6407 avoids problems when the root CA is created with serial number zero and
6408 the first user certificate has the same issuer name and serial number
6412 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6413 the new code. Add documentation for this stuff.
6416 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6417 X509_*() to X509at_*() on the grounds that they don't handle X509
6418 structures and behave in an analagous way to the X509v3 functions:
6419 they shouldn't be called directly but wrapper functions should be used
6422 So we also now have some wrapper functions that call the X509at functions
6423 when passed certificate requests. (TO DO: similar things can be done with
6424 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6425 things. Some of these need some d2i or i2d and print functionality
6426 because they handle more complex structures.)
6429 *) Add missing #ifndefs that caused missing symbols when building libssl
6430 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6431 NO_RSA in ssl/s2*.c.
6432 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6434 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6435 has a return value which indicates the quality of the random data
6436 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6437 error queue. New function RAND_pseudo_bytes() generates output that is
6438 guaranteed to be unique but not unpredictable. RAND_add is like
6439 RAND_seed, but takes an extra argument for an entropy estimate
6440 (RAND_seed always assumes full entropy).
6443 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6444 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6445 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6446 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6447 false-positive rate of at most 2^-80 for random input.
6450 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6453 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6454 in the 0.9.5 release), this returns the chain
6455 from an X509_CTX structure with a dup of the stack and all
6456 the X509 reference counts upped: so the stack will exist
6457 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6460 Also make SSL_SESSION_print() print out the verify return
6464 *) Add manpage for the pkcs12 command. Also change the default
6465 behaviour so MAC iteration counts are used unless the new
6466 -nomaciter option is used. This improves file security and
6467 only older versions of MSIE (4.0 for example) need it.
6470 *) Honor the no-xxx Configure options when creating .DEF files.
6473 *) Add PKCS#10 attributes to field table: challengePassword,
6474 unstructuredName and unstructuredAddress. These are taken from
6475 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6476 international characters are used.
6478 More changes to X509_ATTRIBUTE code: allow the setting of types
6479 based on strings. Remove the 'loc' parameter when adding
6480 attributes because these will be a SET OF encoding which is sorted
6484 *) Initial changes to the 'req' utility to allow request generation
6485 automation. This will allow an application to just generate a template
6486 file containing all the field values and have req construct the
6489 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6490 used all over the place including certificate requests and PKCS#7
6491 structures. They are currently handled manually where necessary with
6492 some primitive wrappers for PKCS#7. The new functions behave in a
6493 manner analogous to the X509 extension functions: they allow
6494 attributes to be looked up by NID and added.
6496 Later something similar to the X509V3 code would be desirable to
6497 automatically handle the encoding, decoding and printing of the
6498 more complex types. The string types like challengePassword can
6499 be handled by the string table functions.
6501 Also modified the multi byte string table handling. Now there is
6502 a 'global mask' which masks out certain types. The table itself
6503 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6504 is useful when for example there is only one permissible type
6505 (as in countryName) and using the mask might result in no valid
6509 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6510 SSL_get_peer_finished to allow applications to obtain the latest
6511 Finished messages sent to the peer or expected from the peer,
6512 respectively. (SSL_get_peer_finished is usually the Finished message
6513 actually received from the peer, otherwise the protocol will be aborted.)
6515 As the Finished message are message digests of the complete handshake
6516 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6517 be used for external authentication procedures when the authentication
6518 provided by SSL/TLS is not desired or is not enough.
6521 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6522 the host supports BWX extension and if Compaq C is present on the
6523 $PATH. Just exploiting of the BWX extension results in 20-30%
6524 performance kick for some algorithms, e.g. DES and RC4 to mention
6525 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6529 *) Add support for MS "fast SGC". This is arguably a violation of the
6530 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6531 weak crypto and after checking the certificate is SGC a second one
6532 with strong crypto. MS SGC stops the first handshake after receiving
6533 the server certificate message and sends a second client hello. Since
6534 a server will typically do all the time consuming operations before
6535 expecting any further messages from the client (server key exchange
6536 is the most expensive) there is little difference between the two.
6538 To get OpenSSL to support MS SGC we have to permit a second client
6539 hello message after we have sent server done. In addition we have to
6540 reset the MAC if we do get this second client hello.
6543 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6544 if a DER encoded private key is RSA or DSA traditional format. Changed
6545 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6546 format DER encoded private key. Newer code should use PKCS#8 format which
6547 has the key type encoded in the ASN1 structure. Added DER private key
6548 support to pkcs8 application.
6551 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6552 ciphersuites has been selected (as required by the SSL 3/TLS 1
6553 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6554 is set, we interpret this as a request to violate the specification
6555 (the worst that can happen is a handshake failure, and 'correct'
6556 behaviour would result in a handshake failure anyway).
6559 *) In SSL_CTX_add_session, take into account that there might be multiple
6560 SSL_SESSION structures with the same session ID (e.g. when two threads
6561 concurrently obtain them from an external cache).
6562 The internal cache can handle only one SSL_SESSION with a given ID,
6563 so if there's a conflict, we now throw out the old one to achieve
6567 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6568 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6569 some routines that use cipher OIDs: some ciphers do not have OIDs
6570 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6574 *) Simplify the trust setting structure and code. Now we just have
6575 two sequences of OIDs for trusted and rejected settings. These will
6576 typically have values the same as the extended key usage extension
6577 and any application specific purposes.
6579 The trust checking code now has a default behaviour: it will just
6580 check for an object with the same NID as the passed id. Functions can
6581 be provided to override either the default behaviour or the behaviour
6582 for a given id. SSL client, server and email already have functions
6583 in place for compatibility: they check the NID and also return "trusted"
6584 if the certificate is self signed.
6587 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6588 traditional format into an EVP_PKEY structure.
6591 *) Add a password callback function PEM_cb() which either prompts for
6592 a password if usr_data is NULL or otherwise assumes it is a null
6593 terminated password. Allow passwords to be passed on command line
6594 environment or config files in a few more utilities.
6597 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6598 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6599 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6600 Update documentation.
6603 *) Support for ASN1 "NULL" type. This could be handled before by using
6604 ASN1_TYPE but there wasn't any function that would try to read a NULL
6605 and produce an error if it couldn't. For compatibility we also have
6606 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6607 don't allocate anything because they don't need to.
6610 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6612 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6614 *) Rebuild of the memory allocation routines used by OpenSSL code and
6615 possibly others as well. The purpose is to make an interface that
6616 provide hooks so anyone can build a separate set of allocation and
6617 deallocation routines to be used by OpenSSL, for example memory
6618 pool implementations, or something else, which was previously hard
6619 since Malloc(), Realloc() and Free() were defined as macros having
6620 the values malloc, realloc and free, respectively (except for Win32
6621 compilations). The same is provided for memory debugging code.
6622 OpenSSL already comes with functionality to find memory leaks, but
6623 this gives people a chance to debug other memory problems.
6625 With these changes, a new set of functions and macros have appeared:
6627 CRYPTO_set_mem_debug_functions() [F]
6628 CRYPTO_get_mem_debug_functions() [F]
6629 CRYPTO_dbg_set_options() [F]
6630 CRYPTO_dbg_get_options() [F]
6631 CRYPTO_malloc_debug_init() [M]
6633 The memory debug functions are NULL by default, unless the library
6634 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6635 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6636 gives the standard debugging functions that come with OpenSSL) or
6637 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6638 provided by the library user) must be used. When the standard
6639 debugging functions are used, CRYPTO_dbg_set_options can be used to
6640 request additional information:
6641 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6642 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6644 Also, things like CRYPTO_set_mem_functions will always give the
6645 expected result (the new set of functions is used for allocation
6646 and deallocation) at all times, regardless of platform and compiler
6649 To finish it up, some functions that were never use in any other
6650 way than through macros have a new API and new semantic:
6653 CRYPTO_dbg_realloc()
6656 All macros of value have retained their old syntax.
6657 [Richard Levitte and Bodo Moeller]
6659 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6660 ordering of SMIMECapabilities wasn't in "strength order" and there
6661 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6665 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6666 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6667 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6669 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6670 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6671 functionality to handle multipart/signed properly) and a utility
6672 called 'smime' to call all this stuff. This is based on code I
6673 originally wrote for Celo who have kindly allowed it to be
6674 included in OpenSSL.
6677 *) Add variants des_set_key_checked and des_set_key_unchecked of
6678 des_set_key (aka des_key_sched). Global variable des_check_key
6679 decides which of these is called by des_set_key; this way
6680 des_check_key behaves as it always did, but applications and
6681 the library itself, which was buggy for des_check_key == 1,
6682 have a cleaner way to pick the version they need.
6685 *) New function PKCS12_newpass() which changes the password of a
6689 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6690 dynamic mix. In both cases the ids can be used as an index into the
6691 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6692 functions so they accept a list of the field values and the
6693 application doesn't need to directly manipulate the X509_TRUST
6697 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6701 *) Modify the way the V3 extension code looks up extensions. This now
6702 works in a similar way to the object code: we have some "standard"
6703 extensions in a static table which is searched with OBJ_bsearch()
6704 and the application can add dynamic ones if needed. The file
6705 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6706 updated whenever a new extension is added to the core code and kept
6707 in ext_nid order. There is a simple program 'tabtest.c' which checks
6708 this. New extensions are not added too often so this file can readily
6709 be maintained manually.
6711 There are two big advantages in doing things this way. The extensions
6712 can be looked up immediately and no longer need to be "added" using
6713 X509V3_add_standard_extensions(): this function now does nothing.
6714 [Side note: I get *lots* of email saying the extension code doesn't
6715 work because people forget to call this function]
6716 Also no dynamic allocation is done unless new extensions are added:
6717 so if we don't add custom extensions there is no need to call
6718 X509V3_EXT_cleanup().
6721 *) Modify enc utility's salting as follows: make salting the default. Add a
6722 magic header, so unsalted files fail gracefully instead of just decrypting
6723 to garbage. This is because not salting is a big security hole, so people
6724 should be discouraged from doing it.
6727 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6728 digest to be passed on the command line but it only used this
6729 parameter when signing a certificate. Modified so all relevant
6730 operations are affected by the digest parameter including the
6731 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6732 DSA key was used because it didn't fix the digest.
6735 *) Initial certificate chain verify code. Currently tests the untrusted
6736 certificates for consistency with the verify purpose (which is set
6737 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6739 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6740 this is because it will reject chains with invalid extensions whereas
6741 every previous version of OpenSSL and SSLeay made no checks at all.
6743 Trust code: checks the root CA for the relevant trust settings. Trust
6744 settings have an initial value consistent with the verify purpose: e.g.
6745 if the verify purpose is for SSL client use it expects the CA to be
6746 trusted for SSL client use. However the default value can be changed to
6747 permit custom trust settings: one example of this would be to only trust
6748 certificates from a specific "secure" set of CAs.
6750 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6751 which should be used for version portability: especially since the
6752 verify structure is likely to change more often now.
6754 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6755 to set them. If not set then assume SSL clients will verify SSL servers
6758 Two new options to the verify program: -untrusted allows a set of
6759 untrusted certificates to be passed in and -purpose which sets the
6760 intended purpose of the certificate. If a purpose is set then the
6761 new chain verify code is used to check extension consistency.
6764 *) Support for the authority information access extension.
6767 *) Modify RSA and DSA PEM read routines to transparently handle
6768 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6769 public keys in a format compatible with certificate
6770 SubjectPublicKeyInfo structures. Unfortunately there were already
6771 functions called *_PublicKey_* which used various odd formats so
6772 these are retained for compatibility: however the DSA variants were
6773 never in a public release so they have been deleted. Changed dsa/rsa
6774 utilities to handle the new format: note no releases ever handled public
6775 keys so we should be OK.
6777 The primary motivation for this change is to avoid the same fiasco
6778 that dogs private keys: there are several incompatible private key
6779 formats some of which are standard and some OpenSSL specific and
6780 require various evil hacks to allow partial transparent handling and
6781 even then it doesn't work with DER formats. Given the option anything
6782 other than PKCS#8 should be dumped: but the other formats have to
6783 stay in the name of compatibility.
6785 With public keys and the benefit of hindsight one standard format
6786 is used which works with EVP_PKEY, RSA or DSA structures: though
6787 it clearly returns an error if you try to read the wrong kind of key.
6789 Added a -pubkey option to the 'x509' utility to output the public key.
6790 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6791 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6792 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6793 that do the same as the EVP_PKEY_assign_*() except they up the
6794 reference count of the added key (they don't "swallow" the
6798 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6799 CRLs would fail if the file contained no certificates or no CRLs:
6800 added a new function to read in both types and return the number
6801 read: this means that if none are read it will be an error. The
6802 DER versions of the certificate and CRL reader would always fail
6803 because it isn't possible to mix certificates and CRLs in DER format
6804 without choking one or the other routine. Changed this to just read
6805 a certificate: this is the best we can do. Also modified the code
6806 in apps/verify.c to take notice of return codes: it was previously
6807 attempting to read in certificates from NULL pointers and ignoring
6808 any errors: this is one reason why the cert and CRL reader seemed
6809 to work. It doesn't check return codes from the default certificate
6810 routines: these may well fail if the certificates aren't installed.
6813 *) Code to support otherName option in GeneralName.
6816 *) First update to verify code. Change the verify utility
6817 so it warns if it is passed a self signed certificate:
6818 for consistency with the normal behaviour. X509_verify
6819 has been modified to it will now verify a self signed
6820 certificate if *exactly* the same certificate appears
6821 in the store: it was previously impossible to trust a
6822 single self signed certificate. This means that:
6823 openssl verify ss.pem
6824 now gives a warning about a self signed certificate but
6825 openssl verify -CAfile ss.pem ss.pem
6829 *) For servers, store verify_result in SSL_SESSION data structure
6830 (and add it to external session representation).
6831 This is needed when client certificate verifications fails,
6832 but an application-provided verification callback (set by
6833 SSL_CTX_set_cert_verify_callback) allows accepting the session
6834 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
6835 but returns 1): When the session is reused, we have to set
6836 ssl->verify_result to the appropriate error code to avoid
6838 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
6840 *) Fix a bug in the new PKCS#7 code: it didn't consider the
6841 case in PKCS7_dataInit() where the signed PKCS7 structure
6842 didn't contain any existing data because it was being created.
6843 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
6845 *) Add a salt to the key derivation routines in enc.c. This
6846 forms the first 8 bytes of the encrypted file. Also add a
6847 -S option to allow a salt to be input on the command line.
6850 *) New function X509_cmp(). Oddly enough there wasn't a function
6851 to compare two certificates. We do this by working out the SHA1
6852 hash and comparing that. X509_cmp() will be needed by the trust
6856 *) SSL_get1_session() is like SSL_get_session(), but increments
6857 the reference count in the SSL_SESSION returned.
6858 [Geoff Thorpe <geoff@eu.c2.net>]
6860 *) Fix for 'req': it was adding a null to request attributes.
6861 Also change the X509_LOOKUP and X509_INFO code to handle
6862 certificate auxiliary information.
6865 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
6869 *) Add the possibility to add extra information to the memory leak
6870 detecting output, to form tracebacks, showing from where each
6871 allocation was originated: CRYPTO_push_info("constant string") adds
6872 the string plus current file name and line number to a per-thread
6873 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
6874 is like calling CYRPTO_pop_info() until the stack is empty.
6875 Also updated memory leak detection code to be multi-thread-safe.
6878 *) Add options -text and -noout to pkcs7 utility and delete the
6879 encryption options which never did anything. Update docs.
6882 *) Add options to some of the utilities to allow the pass phrase
6883 to be included on either the command line (not recommended on
6884 OSes like Unix) or read from the environment. Update the
6885 manpages and fix a few bugs.
6888 *) Add a few manpages for some of the openssl commands.
6891 *) Fix the -revoke option in ca. It was freeing up memory twice,
6892 leaking and not finding already revoked certificates.
6895 *) Extensive changes to support certificate auxiliary information.
6896 This involves the use of X509_CERT_AUX structure and X509_AUX
6897 functions. An X509_AUX function such as PEM_read_X509_AUX()
6898 can still read in a certificate file in the usual way but it
6899 will also read in any additional "auxiliary information". By
6900 doing things this way a fair degree of compatibility can be
6901 retained: existing certificates can have this information added
6902 using the new 'x509' options.
6904 Current auxiliary information includes an "alias" and some trust
6905 settings. The trust settings will ultimately be used in enhanced
6906 certificate chain verification routines: currently a certificate
6907 can only be trusted if it is self signed and then it is trusted
6911 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
6912 The problem was that one of the replacement routines had not been working
6913 since SSLeay releases. For now the offending routine has been replaced
6914 with non-optimised assembler. Even so, this now gives around 95%
6915 performance improvement for 1024 bit RSA signs.
6918 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
6919 handling. Most clients have the effective key size in bits equal to
6920 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
6921 A few however don't do this and instead use the size of the decrypted key
6922 to determine the RC2 key length and the AlgorithmIdentifier to determine
6923 the effective key length. In this case the effective key length can still
6924 be 40 bits but the key length can be 168 bits for example. This is fixed
6925 by manually forcing an RC2 key into the EVP_PKEY structure because the
6926 EVP code can't currently handle unusual RC2 key sizes: it always assumes
6927 the key length and effective key length are equal.
6930 *) Add a bunch of functions that should simplify the creation of
6931 X509_NAME structures. Now you should be able to do:
6932 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
6933 and have it automatically work out the correct field type and fill in
6934 the structures. The more adventurous can try:
6935 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
6936 and it will (hopefully) work out the correct multibyte encoding.
6939 *) Change the 'req' utility to use the new field handling and multibyte
6940 copy routines. Before the DN field creation was handled in an ad hoc
6941 way in req, ca, and x509 which was rather broken and didn't support
6942 BMPStrings or UTF8Strings. Since some software doesn't implement
6943 BMPStrings or UTF8Strings yet, they can be enabled using the config file
6944 using the dirstring_type option. See the new comment in the default
6945 openssl.cnf for more info.
6948 *) Make crypto/rand/md_rand.c more robust:
6949 - Assure unique random numbers after fork().
6950 - Make sure that concurrent threads access the global counter and
6951 md serializably so that we never lose entropy in them
6952 or use exactly the same state in multiple threads.
6953 Access to the large state is not always serializable because
6954 the additional locking could be a performance killer, and
6955 md should be large enough anyway.
6958 *) New file apps/app_rand.c with commonly needed functionality
6959 for handling the random seed file.
6961 Use the random seed file in some applications that previously did not:
6963 dsaparam -genkey (which also ignored its '-rand' option),
6966 x509 (when signing).
6967 Except on systems with /dev/urandom, it is crucial to have a random
6968 seed file at least for key creation, DSA signing, and for DH exchanges;
6969 for RSA signatures we could do without one.
6971 gendh and gendsa (unlike genrsa) used to read only the first byte
6972 of each file listed in the '-rand' option. The function as previously
6973 found in genrsa is now in app_rand.c and is used by all programs
6974 that support '-rand'.
6977 *) In RAND_write_file, use mode 0600 for creating files;
6978 don't just chmod when it may be too late.
6981 *) Report an error from X509_STORE_load_locations
6982 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
6985 *) New function ASN1_mbstring_copy() this copies a string in either
6986 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
6987 into an ASN1_STRING type. A mask of permissible types is passed
6988 and it chooses the "minimal" type to use or an error if not type
6992 *) Add function equivalents to the various macros in asn1.h. The old
6993 macros are retained with an M_ prefix. Code inside the library can
6994 use the M_ macros. External code (including the openssl utility)
6995 should *NOT* in order to be "shared library friendly".
6998 *) Add various functions that can check a certificate's extensions
6999 to see if it usable for various purposes such as SSL client,
7000 server or S/MIME and CAs of these types. This is currently
7001 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7002 verification. Also added a -purpose flag to x509 utility to
7003 print out all the purposes.
7006 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7010 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7011 for, obtain and decode and extension and obtain its critical flag.
7012 This allows all the necessary extension code to be handled in a
7013 single function call.
7016 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7017 platforms. See crypto/rc4/rc4_enc.c for further details.
7020 *) New -noout option to asn1parse. This causes no output to be produced
7021 its main use is when combined with -strparse and -out to extract data
7022 from a file (which may not be in ASN.1 format).
7025 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7026 when producing the local key id.
7027 [Richard Levitte <levitte@stacken.kth.se>]
7029 *) New option -dhparam in s_server. This allows a DH parameter file to be
7030 stated explicitly. If it is not stated then it tries the first server
7031 certificate file. The previous behaviour hard coded the filename
7035 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7036 a public key to be input or output. For example:
7037 openssl rsa -in key.pem -pubout -out pubkey.pem
7038 Also added necessary DSA public key functions to handle this.
7041 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7042 in the message. This was handled by allowing
7043 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7044 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7046 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7047 to the end of the strings whereas this didn't. This would cause problems
7048 if strings read with d2i_ASN1_bytes() were later modified.
7049 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7051 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7052 data and it contains EOF it will end up returning an error. This is
7053 caused by input 46 bytes long. The cause is due to the way base64
7054 BIOs find the start of base64 encoded data. They do this by trying a
7055 trial decode on each line until they find one that works. When they
7056 do a flag is set and it starts again knowing it can pass all the
7057 data directly through the decoder. Unfortunately it doesn't reset
7058 the context it uses. This means that if EOF is reached an attempt
7059 is made to pass two EOFs through the context and this causes the
7060 resulting error. This can also cause other problems as well. As is
7061 usual with these problems it takes *ages* to find and the fix is
7062 trivial: move one line.
7063 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7065 *) Ugly workaround to get s_client and s_server working under Windows. The
7066 old code wouldn't work because it needed to select() on sockets and the
7067 tty (for keypresses and to see if data could be written). Win32 only
7068 supports select() on sockets so we select() with a 1s timeout on the
7069 sockets and then see if any characters are waiting to be read, if none
7070 are present then we retry, we also assume we can always write data to
7071 the tty. This isn't nice because the code then blocks until we've
7072 received a complete line of data and it is effectively polling the
7073 keyboard at 1s intervals: however it's quite a bit better than not
7074 working at all :-) A dedicated Windows application might handle this
7075 with an event loop for example.
7078 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7079 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7080 will be called when RSA_sign() and RSA_verify() are used. This is useful
7081 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7082 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7083 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7084 This necessitated the support of an extra signature type NID_md5_sha1
7085 for SSL signatures and modifications to the SSL library to use it instead
7086 of calling RSA_public_decrypt() and RSA_private_encrypt().
7089 *) Add new -verify -CAfile and -CApath options to the crl program, these
7090 will lookup a CRL issuers certificate and verify the signature in a
7091 similar way to the verify program. Tidy up the crl program so it
7092 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7093 less strict. It will now permit CRL extensions even if it is not
7094 a V2 CRL: this will allow it to tolerate some broken CRLs.
7097 *) Initialize all non-automatic variables each time one of the openssl
7098 sub-programs is started (this is necessary as they may be started
7099 multiple times from the "OpenSSL>" prompt).
7100 [Lennart Bang, Bodo Moeller]
7102 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7103 removing all other RSA functionality (this is what NO_RSA does). This
7104 is so (for example) those in the US can disable those operations covered
7105 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7109 *) Non-copying interface to BIO pairs.
7110 (still largely untested)
7113 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7114 ASCII string. This was handled independently in various places before.
7117 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7118 UTF8 strings a character at a time.
7121 *) Use client_version from client hello to select the protocol
7122 (s23_srvr.c) and for RSA client key exchange verification
7123 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7126 *) Add various utility functions to handle SPKACs, these were previously
7127 handled by poking round in the structure internals. Added new function
7128 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7129 print, verify and generate SPKACs. Based on an original idea from
7130 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7133 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7136 *) Allow the config file extension section to be overwritten on the
7137 command line. Based on an original idea from Massimiliano Pala
7138 <madwolf@comune.modena.it>. The new option is called -extensions
7139 and can be applied to ca, req and x509. Also -reqexts to override
7140 the request extensions in req and -crlexts to override the crl extensions
7144 *) Add new feature to the SPKAC handling in ca. Now you can include
7145 the same field multiple times by preceding it by "XXXX." for example:
7148 this is the same syntax as used in the req config file.
7151 *) Allow certificate extensions to be added to certificate requests. These
7152 are specified in a 'req_extensions' option of the req section of the
7153 config file. They can be printed out with the -text option to req but
7154 are otherwise ignored at present.
7157 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
7158 data read consists of only the final block it would not decrypted because
7159 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
7160 A misplaced 'break' also meant the decrypted final block might not be
7161 copied until the next read.
7164 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
7165 a few extra parameters to the DH structure: these will be useful if
7166 for example we want the value of 'q' or implement X9.42 DH.
7169 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
7170 provides hooks that allow the default DSA functions or functions on a
7171 "per key" basis to be replaced. This allows hardware acceleration and
7172 hardware key storage to be handled without major modification to the
7173 library. Also added low level modexp hooks and CRYPTO_EX structure and
7174 associated functions.
7177 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
7178 as "read only": it can't be written to and the buffer it points to will
7179 not be freed. Reading from a read only BIO is much more efficient than
7180 a normal memory BIO. This was added because there are several times when
7181 an area of memory needs to be read from a BIO. The previous method was
7182 to create a memory BIO and write the data to it, this results in two
7183 copies of the data and an O(n^2) reading algorithm. There is a new
7184 function BIO_new_mem_buf() which creates a read only memory BIO from
7185 an area of memory. Also modified the PKCS#7 routines to use read only
7189 *) Bugfix: ssl23_get_client_hello did not work properly when called in
7190 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
7191 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
7192 but a retry condition occured while trying to read the rest.
7195 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
7196 NID_pkcs7_encrypted by default: this was wrong since this should almost
7197 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
7198 the encrypted data type: this is a more sensible place to put it and it
7199 allows the PKCS#12 code to be tidied up that duplicated this
7203 *) Changed obj_dat.pl script so it takes its input and output files on
7204 the command line. This should avoid shell escape redirection problems
7208 *) Initial support for certificate extension requests, these are included
7209 in things like Xenroll certificate requests. Included functions to allow
7210 extensions to be obtained and added.
7213 *) -crlf option to s_client and s_server for sending newlines as
7214 CRLF (as required by many protocols).
7217 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
7219 *) Install libRSAglue.a when OpenSSL is built with RSAref.
7220 [Ralf S. Engelschall]
7222 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
7223 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
7225 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
7229 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
7230 DH parameters/keys (q is lost during that conversion, but the resulting
7231 DH parameters contain its length).
7233 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
7234 much faster than DH_generate_parameters (which creates parameters
7235 where p = 2*q + 1), and also the smaller q makes DH computations
7236 much more efficient (160-bit exponentiation instead of 1024-bit
7237 exponentiation); so this provides a convenient way to support DHE
7238 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
7239 utter importance to use
7240 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7242 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7243 when such DH parameters are used, because otherwise small subgroup
7244 attacks may become possible!
7247 *) Avoid memory leak in i2d_DHparams.
7250 *) Allow the -k option to be used more than once in the enc program:
7251 this allows the same encrypted message to be read by multiple recipients.
7254 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
7255 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
7256 it will always use the numerical form of the OID, even if it has a short
7260 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
7261 method only got called if p,q,dmp1,dmq1,iqmp components were present,
7262 otherwise bn_mod_exp was called. In the case of hardware keys for example
7263 no private key components need be present and it might store extra data
7264 in the RSA structure, which cannot be accessed from bn_mod_exp.
7265 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
7266 private key operations.
7269 *) Added support for SPARC Linux.
7272 *) pem_password_cb function type incompatibly changed from
7273 typedef int pem_password_cb(char *buf, int size, int rwflag);
7275 ....(char *buf, int size, int rwflag, void *userdata);
7276 so that applications can pass data to their callbacks:
7277 The PEM[_ASN1]_{read,write}... functions and macros now take an
7278 additional void * argument, which is just handed through whenever
7279 the password callback is called.
7280 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
7282 New function SSL_CTX_set_default_passwd_cb_userdata.
7284 Compatibility note: As many C implementations push function arguments
7285 onto the stack in reverse order, the new library version is likely to
7286 interoperate with programs that have been compiled with the old
7287 pem_password_cb definition (PEM_whatever takes some data that
7288 happens to be on the stack as its last argument, and the callback
7289 just ignores this garbage); but there is no guarantee whatsoever that
7292 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
7293 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
7294 problems not only on Windows, but also on some Unix platforms.
7295 To avoid problematic command lines, these definitions are now in an
7296 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
7297 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
7300 *) MIPS III/IV assembler module is reimplemented.
7303 *) More DES library cleanups: remove references to srand/rand and
7304 delete an unused file.
7307 *) Add support for the the free Netwide assembler (NASM) under Win32,
7308 since not many people have MASM (ml) and it can be hard to obtain.
7309 This is currently experimental but it seems to work OK and pass all
7310 the tests. Check out INSTALL.W32 for info.
7313 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
7314 without temporary keys kept an extra copy of the server key,
7315 and connections with temporary keys did not free everything in case
7319 *) New function RSA_check_key and new openssl rsa option -check
7320 for verifying the consistency of RSA keys.
7321 [Ulf Moeller, Bodo Moeller]
7323 *) Various changes to make Win32 compile work:
7324 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
7325 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
7326 comparison" warnings.
7327 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
7330 *) Add a debugging option to PKCS#5 v2 key generation function: when
7331 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
7332 derived keys are printed to stderr.
7335 *) Copy the flags in ASN1_STRING_dup().
7336 [Roman E. Pavlov <pre@mo.msk.ru>]
7338 *) The x509 application mishandled signing requests containing DSA
7339 keys when the signing key was also DSA and the parameters didn't match.
7341 It was supposed to omit the parameters when they matched the signing key:
7342 the verifying software was then supposed to automatically use the CA's
7343 parameters if they were absent from the end user certificate.
7345 Omitting parameters is no longer recommended. The test was also
7346 the wrong way round! This was probably due to unusual behaviour in
7347 EVP_cmp_parameters() which returns 1 if the parameters match.
7348 This meant that parameters were omitted when they *didn't* match and
7349 the certificate was useless. Certificates signed with 'ca' didn't have
7351 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
7353 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
7354 The interface is as follows:
7355 Applications can use
7356 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
7357 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
7358 "off" is now the default.
7359 The library internally uses
7360 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
7361 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
7362 to disable memory-checking temporarily.
7364 Some inconsistent states that previously were possible (and were
7365 even the default) are now avoided.
7367 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
7368 with each memory chunk allocated; this is occasionally more helpful
7369 than just having a counter.
7371 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7373 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7377 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7378 which largely parallels "options", but is for changing API behaviour,
7379 whereas "options" are about protocol behaviour.
7380 Initial "mode" flags are:
7382 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7383 a single record has been written.
7384 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7385 retries use the same buffer location.
7386 (But all of the contents must be
7390 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7393 *) Fix problems with no-hmac etc.
7394 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7396 *) New functions RSA_get_default_method(), RSA_set_method() and
7397 RSA_get_method(). These allows replacement of RSA_METHODs without having
7398 to mess around with the internals of an RSA structure.
7401 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7402 Also really enable memory leak checks in openssl.c and in some
7404 [Chad C. Mulligan, Bodo Moeller]
7406 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7407 up the length of negative integers. This has now been simplified to just
7408 store the length when it is first determined and use it later, rather
7409 than trying to keep track of where data is copied and updating it to
7411 [Steve Henson, reported by Brien Wheeler
7412 <bwheeler@authentica-security.com>]
7414 *) Add a new function PKCS7_signatureVerify. This allows the verification
7415 of a PKCS#7 signature but with the signing certificate passed to the
7416 function itself. This contrasts with PKCS7_dataVerify which assumes the
7417 certificate is present in the PKCS#7 structure. This isn't always the
7418 case: certificates can be omitted from a PKCS#7 structure and be
7419 distributed by "out of band" means (such as a certificate database).
7422 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7423 function prototypes in pem.h, also change util/mkdef.pl to add the
7424 necessary function names.
7427 *) mk1mf.pl (used by Windows builds) did not properly read the
7428 options set by Configure in the top level Makefile, and Configure
7429 was not even able to write more than one option correctly.
7430 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7433 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7434 file to be loaded from a BIO or FILE pointer. The BIO version will
7435 for example allow memory BIOs to contain config info.
7438 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7439 Whoever hopes to achieve shared-library compatibility across versions
7440 must use this, not the compile-time macro.
7441 (Exercise 0.9.4: Which is the minimum library version required by
7443 Note: All this applies only to multi-threaded programs, others don't
7447 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7448 through a BIO pair triggered the default case, i.e.
7449 SSLerr(...,SSL_R_UNKNOWN_STATE).
7452 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7453 can use the SSL library even if none of the specific BIOs is
7457 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7458 for the encoded length.
7459 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7461 *) Add initial documentation of the X509V3 functions.
7464 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7465 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7466 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7467 secure PKCS#8 private key format with a high iteration count.
7470 *) Fix determination of Perl interpreter: A perl or perl5
7471 _directory_ in $PATH was also accepted as the interpreter.
7472 [Ralf S. Engelschall]
7474 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7475 wrong with it but it was very old and did things like calling
7476 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7480 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7481 to use the new extension code.
7484 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7485 with macros. This should make it easier to change their form, add extra
7486 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7490 *) Add to configuration table a new entry that can specify an alternative
7491 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7492 according to Mark Crispin <MRC@Panda.COM>.
7496 *) DES CBC did not update the IV. Weird.
7499 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7500 Changing the behaviour of the former might break existing programs --
7501 where IV updating is needed, des_ncbc_encrypt can be used.
7504 *) When bntest is run from "make test" it drives bc to check its
7505 calculations, as well as internally checking them. If an internal check
7506 fails, it needs to cause bc to give a non-zero result or make test carries
7507 on without noticing the failure. Fixed.
7510 *) DES library cleanups.
7513 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7514 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7515 ciphers. NOTE: although the key derivation function has been verified
7516 against some published test vectors it has not been extensively tested
7517 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7521 *) Instead of "mkdir -p", which is not fully portable, use new
7522 Perl script "util/mkdir-p.pl".
7525 *) Rewrite the way password based encryption (PBE) is handled. It used to
7526 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7527 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7528 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7529 the 'parameter' field of the AlgorithmIdentifier is passed to the
7530 underlying key generation function so it must do its own ASN1 parsing.
7531 This has also changed the EVP_PBE_CipherInit() function which now has a
7532 'parameter' argument instead of literal salt and iteration count values
7533 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7536 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7537 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7538 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7539 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7540 value was just used as a "magic string" and not used directly its
7541 value doesn't matter.
7544 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7548 *) "linux-sparc64" configuration (ultrapenguin).
7549 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7550 "linux-sparc" configuration.
7551 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7553 *) config now generates no-xxx options for missing ciphers.
7556 *) Support the EBCDIC character set (work in progress).
7557 File ebcdic.c not yet included because it has a different license.
7558 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7560 *) Support BS2000/OSD-POSIX.
7561 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7563 *) Make callbacks for key generation use void * instead of char *.
7566 *) Make S/MIME samples compile (not yet tested).
7569 *) Additional typesafe stacks.
7572 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7576 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7578 *) New configuration variant "sco5-gcc".
7580 *) Updated some demos.
7581 [Sean O Riordain, Wade Scholine]
7583 *) Add missing BIO_free at exit of pkcs12 application.
7586 *) Fix memory leak in conf.c.
7589 *) Updates for Win32 to assembler version of MD5.
7592 *) Set #! path to perl in apps/der_chop to where we found it
7593 instead of using a fixed path.
7596 *) SHA library changes for irix64-mips4-cc.
7599 *) Improvements for VMS support.
7603 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7605 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7606 This also avoids the problems with SC4.2 and unpatched SC5.
7607 [Andy Polyakov <appro@fy.chalmers.se>]
7609 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7610 These are required because of the typesafe stack would otherwise break
7611 existing code. If old code used a structure member which used to be STACK
7612 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7613 sk_num or sk_value it would produce an error because the num, data members
7614 are not present in STACK_OF. Now it just produces a warning. sk_set
7615 replaces the old method of assigning a value to sk_value
7616 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7617 that does this will no longer work (and should use sk_set instead) but
7618 this could be regarded as a "questionable" behaviour anyway.
7621 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7622 correctly handle encrypted S/MIME data.
7625 *) Change type of various DES function arguments from des_cblock
7626 (which means, in function argument declarations, pointer to char)
7627 to des_cblock * (meaning pointer to array with 8 char elements),
7628 which allows the compiler to do more typechecking; it was like
7629 that back in SSLeay, but with lots of ugly casts.
7631 Introduce new type const_des_cblock.
7634 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7635 problems: find RecipientInfo structure that matches recipient certificate
7636 and initialise the ASN1 structures properly based on passed cipher.
7639 *) Belatedly make the BN tests actually check the results.
7642 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7643 to and from BNs: it was completely broken. New compilation option
7644 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7645 key elements as negative integers.
7648 *) Reorganize and speed up MD5.
7649 [Andy Polyakov <appro@fy.chalmers.se>]
7652 [Richard Levitte <richard@levitte.org>]
7654 *) New option -out to asn1parse to allow the parsed structure to be
7655 output to a file. This is most useful when combined with the -strparse
7656 option to examine the output of things like OCTET STRINGS.
7659 *) Make SSL library a little more fool-proof by not requiring any longer
7660 that SSL_set_{accept,connect}_state be called before
7661 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7662 in many applications because usually everything *appeared* to work as
7663 intended anyway -- now it really works as intended).
7666 *) Move openssl.cnf out of lib/.
7669 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7670 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7671 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7672 [Ralf S. Engelschall]
7674 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7675 handle PKCS#7 enveloped data properly.
7676 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7678 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7679 copying pointers. The cert_st handling is changed by this in
7680 various ways (and thus what used to be known as ctx->default_cert
7681 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7682 any longer when s->cert does not give us what we need).
7683 ssl_cert_instantiate becomes obsolete by this change.
7684 As soon as we've got the new code right (possibly it already is?),
7685 we have solved a couple of bugs of the earlier code where s->cert
7686 was used as if it could not have been shared with other SSL structures.
7688 Note that using the SSL API in certain dirty ways now will result
7689 in different behaviour than observed with earlier library versions:
7690 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7691 does not influence s as it used to.
7693 In order to clean up things more thoroughly, inside SSL_SESSION
7694 we don't use CERT any longer, but a new structure SESS_CERT
7695 that holds per-session data (if available); currently, this is
7696 the peer's certificate chain and, for clients, the server's certificate
7697 and temporary key. CERT holds only those values that can have
7698 meaningful defaults in an SSL_CTX.
7701 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7702 from the internal representation. Various PKCS#7 fixes: remove some
7703 evil casts and set the enc_dig_alg field properly based on the signing
7707 *) Allow PKCS#12 password to be set from the command line or the
7708 environment. Let 'ca' get its config file name from the environment
7709 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7713 *) Allow certificate policies extension to use an IA5STRING for the
7714 organization field. This is contrary to the PKIX definition but
7715 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7719 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7720 without disallowing inline assembler and the like for non-pedantic builds.
7723 *) Support Borland C++ builder.
7724 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7729 *) SHA-1 cleanups and performance enhancements.
7730 [Andy Polyakov <appro@fy.chalmers.se>]
7732 *) Sparc v8plus assembler for the bignum library.
7733 [Andy Polyakov <appro@fy.chalmers.se>]
7735 *) Accept any -xxx and +xxx compiler options in Configure.
7738 *) Update HPUX configuration.
7741 *) Add missing sk_<type>_unshift() function to safestack.h
7742 [Ralf S. Engelschall]
7744 *) New function SSL_CTX_use_certificate_chain_file that sets the
7745 "extra_cert"s in addition to the certificate. (This makes sense
7746 only for "PEM" format files, as chains as a whole are not
7750 *) Support verify_depth from the SSL API.
7751 x509_vfy.c had what can be considered an off-by-one-error:
7752 Its depth (which was not part of the external interface)
7753 was actually counting the number of certificates in a chain;
7754 now it really counts the depth.
7757 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7758 instead of X509err, which often resulted in confusing error
7759 messages since the error codes are not globally unique
7760 (e.g. an alleged error in ssl3_accept when a certificate
7761 didn't match the private key).
7763 *) New function SSL_CTX_set_session_id_context that allows to set a default
7764 value (so that you don't need SSL_set_session_id_context for each
7765 connection using the SSL_CTX).
7768 *) OAEP decoding bug fix.
7771 *) Support INSTALL_PREFIX for package builders, as proposed by
7775 *) New Configure options "threads" and "no-threads". For systems
7776 where the proper compiler options are known (currently Solaris
7777 and Linux), "threads" is the default.
7780 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7783 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7784 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7785 such as /usr/local/bin.
7788 *) "make linux-shared" to build shared libraries.
7789 [Niels Poppe <niels@netbox.org>]
7791 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7794 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7795 extension adding in x509 utility.
7798 *) Remove NOPROTO sections and error code comments.
7801 *) Partial rewrite of the DEF file generator to now parse the ANSI
7805 *) New Configure options --prefix=DIR and --openssldir=DIR.
7808 *) Complete rewrite of the error code script(s). It is all now handled
7809 by one script at the top level which handles error code gathering,
7810 header rewriting and C source file generation. It should be much better
7811 than the old method: it now uses a modified version of Ulf's parser to
7812 read the ANSI prototypes in all header files (thus the old K&R definitions
7813 aren't needed for error creation any more) and do a better job of
7814 translating function codes into names. The old 'ASN1 error code imbedded
7815 in a comment' is no longer necessary and it doesn't use .err files which
7816 have now been deleted. Also the error code call doesn't have to appear all
7817 on one line (which resulted in some large lines...).
7820 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7823 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7824 0 (which usually indicates a closed connection), but continue reading.
7827 *) Fix some race conditions.
7830 *) Add support for CRL distribution points extension. Add Certificate
7831 Policies and CRL distribution points documentation.
7834 *) Move the autogenerated header file parts to crypto/opensslconf.h.
7837 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
7838 8 of keying material. Merlin has also confirmed interop with this fix
7839 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
7840 [Merlin Hughes <merlin@baltimore.ie>]
7842 *) Fix lots of warnings.
7843 [Richard Levitte <levitte@stacken.kth.se>]
7845 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
7846 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
7847 [Richard Levitte <levitte@stacken.kth.se>]
7849 *) Fix problems with sizeof(long) == 8.
7850 [Andy Polyakov <appro@fy.chalmers.se>]
7852 *) Change functions to ANSI C.
7855 *) Fix typos in error codes.
7856 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
7858 *) Remove defunct assembler files from Configure.
7861 *) SPARC v8 assembler BIGNUM implementation.
7862 [Andy Polyakov <appro@fy.chalmers.se>]
7864 *) Support for Certificate Policies extension: both print and set.
7865 Various additions to support the r2i method this uses.
7868 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
7869 return a const string when you are expecting an allocated buffer.
7872 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
7873 types DirectoryString and DisplayText.
7876 *) Add code to allow r2i extensions to access the configuration database,
7877 add an LHASH database driver and add several ctx helper functions.
7880 *) Fix an evil bug in bn_expand2() which caused various BN functions to
7881 fail when they extended the size of a BIGNUM.
7884 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
7885 support typesafe stack.
7888 *) Fix typo in SSL_[gs]et_options().
7889 [Nils Frostberg <nils@medcom.se>]
7891 *) Delete various functions and files that belonged to the (now obsolete)
7892 old X509V3 handling code.
7895 *) New Configure option "rsaref".
7898 *) Don't auto-generate pem.h.
7901 *) Introduce type-safe ASN.1 SETs.
7904 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
7905 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
7907 *) Introduce type-safe STACKs. This will almost certainly break lots of code
7908 that links with OpenSSL (well at least cause lots of warnings), but fear
7909 not: the conversion is trivial, and it eliminates loads of evil casts. A
7910 few STACKed things have been converted already. Feel free to convert more.
7911 In the fullness of time, I'll do away with the STACK type altogether.
7914 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
7915 specified in <certfile> by updating the entry in the index.txt file.
7916 This way one no longer has to edit the index.txt file manually for
7917 revoking a certificate. The -revoke option does the gory details now.
7918 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
7920 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
7921 `-text' option at all and this way the `-noout -text' combination was
7922 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
7923 [Ralf S. Engelschall]
7925 *) Make sure a corresponding plain text error message exists for the
7926 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
7927 verify callback function determined that a certificate was revoked.
7928 [Ralf S. Engelschall]
7930 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
7931 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
7932 all available cipers including rc5, which was forgotten until now.
7933 In order to let the testing shell script know which algorithms
7934 are available, a new (up to now undocumented) command
7935 "openssl list-cipher-commands" is used.
7938 *) Bugfix: s_client occasionally would sleep in select() when
7939 it should have checked SSL_pending() first.
7942 *) New functions DSA_do_sign and DSA_do_verify to provide access to
7943 the raw DSA values prior to ASN.1 encoding.
7946 *) Tweaks to Configure
7947 [Niels Poppe <niels@netbox.org>]
7949 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
7953 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
7956 *) New config option to avoid instructions that are illegal on the 80386.
7957 The default code is faster, but requires at least a 486.
7960 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
7961 SSL2_SERVER_VERSION (not used at all) macros, which are now the
7962 same as SSL2_VERSION anyway.
7965 *) New "-showcerts" option for s_client.
7968 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
7969 application. Various cleanups and fixes.
7972 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
7973 modify error routines to work internally. Add error codes and PBE init
7974 to library startup routines.
7977 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
7978 packing functions to asn1 and evp. Changed function names and error
7979 codes along the way.
7982 *) PKCS12 integration: and so it begins... First of several patches to
7983 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
7984 objects to objects.h
7987 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
7988 and display support for Thawte strong extranet extension.
7991 *) Add LinuxPPC support.
7992 [Jeff Dubrule <igor@pobox.org>]
7994 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
7995 bn_div_words in alpha.s.
7996 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
7998 *) Make sure the RSA OAEP test is skipped under -DRSAref because
7999 OAEP isn't supported when OpenSSL is built with RSAref.
8000 [Ulf Moeller <ulf@fitug.de>]
8002 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8003 so they no longer are missing under -DNOPROTO.
8004 [Soren S. Jorvang <soren@t.dk>]
8007 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8009 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8010 doesn't work when the session is reused. Coming soon!
8013 *) Fix a security hole, that allows sessions to be reused in the wrong
8014 context thus bypassing client cert protection! All software that uses
8015 client certs and session caches in multiple contexts NEEDS PATCHING to
8016 allow session reuse! A fuller solution is in the works.
8017 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8019 *) Some more source tree cleanups (removed obsolete files
8020 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8021 permission on "config" script to be executable) and a fix for the INSTALL
8023 [Ulf Moeller <ulf@fitug.de>]
8025 *) Remove some legacy and erroneous uses of malloc, free instead of
8027 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8029 *) Make rsa_oaep_test return non-zero on error.
8030 [Ulf Moeller <ulf@fitug.de>]
8032 *) Add support for native Solaris shared libraries. Configure
8033 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8034 if someone would make that last step automatic.
8035 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8037 *) ctx_size was not built with the right compiler during "make links". Fixed.
8040 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8041 except NULL ciphers". This means the default cipher list will no longer
8042 enable NULL ciphers. They need to be specifically enabled e.g. with
8043 the string "DEFAULT:eNULL".
8046 *) Fix to RSA private encryption routines: if p < q then it would
8047 occasionally produce an invalid result. This will only happen with
8048 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8051 *) Be less restrictive and allow also `perl util/perlpath.pl
8052 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8053 because this way one can also use an interpreter named `perl5' (which is
8054 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8055 installed as `perl').
8056 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8058 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8059 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8061 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8062 advapi32.lib to Win32 build and change the pem test comparision
8063 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8064 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8065 and crypto/des/ede_cbcm_enc.c.
8068 *) DES quad checksum was broken on big-endian architectures. Fixed.
8071 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8072 Win32 test batch file so it (might) work again. The Win32 test batch file
8073 is horrible: I feel ill....
8076 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8077 in e_os.h. Audit of header files to check ANSI and non ANSI
8078 sections: 10 functions were absent from non ANSI section and not exported
8079 from Windows DLLs. Fixed up libeay.num for new functions.
8082 *) Make `openssl version' output lines consistent.
8083 [Ralf S. Engelschall]
8085 *) Fix Win32 symbol export lists for BIO functions: Added
8086 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8087 to ms/libeay{16,32}.def.
8088 [Ralf S. Engelschall]
8090 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8091 fine under Unix and passes some trivial tests I've now added. But the
8092 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8093 added to make sure no one expects that this stuff really works in the
8094 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8095 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8097 [Ralf S. Engelschall]
8099 *) Fix the generation of two part addresses in perl.
8100 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8102 *) Add config entry for Linux on MIPS.
8103 [John Tobey <jtobey@channel1.com>]
8105 *) Make links whenever Configure is run, unless we are on Windoze.
8108 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8109 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8113 *) Add a useful kludge to allow package maintainers to specify compiler and
8114 other platforms details on the command line without having to patch the
8115 Configure script everytime: One now can use ``perl Configure
8116 <id>:<details>'', i.e. platform ids are allowed to have details appended
8117 to them (seperated by colons). This is treated as there would be a static
8118 pre-configured entry in Configure's %table under key <id> with value
8119 <details> and ``perl Configure <id>'' is called. So, when you want to
8120 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8121 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8122 now, which overrides the FreeBSD-elf entry on-the-fly.
8123 [Ralf S. Engelschall]
8125 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8128 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8129 on the `perl Configure ...' command line. This way one can compile
8130 OpenSSL libraries with Position Independent Code (PIC) which is needed
8131 for linking it into DSOs.
8132 [Ralf S. Engelschall]
8134 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8138 *) Cleaned up the LICENSE document: The official contact for any license
8139 questions now is the OpenSSL core team under openssl-core@openssl.org.
8140 And add a paragraph about the dual-license situation to make sure people
8141 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8142 to the OpenSSL toolkit.
8143 [Ralf S. Engelschall]
8145 *) General source tree makefile cleanups: Made `making xxx in yyy...'
8146 display consistent in the source tree and replaced `/bin/rm' by `rm'.
8147 Additonally cleaned up the `make links' target: Remove unnecessary
8148 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
8149 to speed processing and no longer clutter the display with confusing
8150 stuff. Instead only the actually done links are displayed.
8151 [Ralf S. Engelschall]
8153 *) Permit null encryption ciphersuites, used for authentication only. It used
8154 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
8155 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
8159 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
8160 signed attributes when verifying signatures (this would break them),
8161 the detached data encoding was wrong and public keys obtained using
8162 X509_get_pubkey() weren't freed.
8165 *) Add text documentation for the BUFFER functions. Also added a work around
8166 to a Win95 console bug. This was triggered by the password read stuff: the
8167 last character typed gets carried over to the next fread(). If you were
8168 generating a new cert request using 'req' for example then the last
8169 character of the passphrase would be CR which would then enter the first
8173 *) Added the new `Includes OpenSSL Cryptography Software' button as
8174 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
8175 button and can be used by applications based on OpenSSL to show the
8176 relationship to the OpenSSL project.
8177 [Ralf S. Engelschall]
8179 *) Remove confusing variables in function signatures in files
8180 ssl/ssl_lib.c and ssl/ssl.h.
8181 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8183 *) Don't install bss_file.c under PREFIX/include/
8184 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8186 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
8187 functions that return function pointers and has support for NT specific
8188 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
8189 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
8190 unsigned to signed types: this was killing the Win32 compile.
8193 *) Add new certificate file to stack functions,
8194 SSL_add_dir_cert_subjects_to_stack() and
8195 SSL_add_file_cert_subjects_to_stack(). These largely supplant
8196 SSL_load_client_CA_file(), and can be used to add multiple certs easily
8197 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
8198 This means that Apache-SSL and similar packages don't have to mess around
8199 to add as many CAs as they want to the preferred list.
8202 *) Experiment with doxygen documentation. Currently only partially applied to
8204 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
8205 openssl.doxy as the configuration file.
8208 *) Get rid of remaining C++-style comments which strict C compilers hate.
8209 [Ralf S. Engelschall, pointed out by Carlos Amengual]
8211 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
8212 compiled in by default: it has problems with large keys.
8215 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
8216 DH private keys and/or callback functions which directly correspond to
8217 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
8218 is needed for applications which have to configure certificates on a
8219 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
8221 For the RSA certificate situation is makes no difference, but
8222 for the DSA certificate situation this fixes the "no shared cipher"
8223 problem where the OpenSSL cipher selection procedure failed because the
8224 temporary keys were not overtaken from the context and the API provided
8225 no way to reconfigure them.
8226 The new functions now let applications reconfigure the stuff and they
8227 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
8228 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
8229 non-public-API function ssl_cert_instantiate() is used as a helper
8230 function and also to reduce code redundancy inside ssl_rsa.c.
8231 [Ralf S. Engelschall]
8233 *) Move s_server -dcert and -dkey options out of the undocumented feature
8234 area because they are useful for the DSA situation and should be
8235 recognized by the users.
8236 [Ralf S. Engelschall]
8238 *) Fix the cipher decision scheme for export ciphers: the export bits are
8239 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
8240 SSL_EXP_MASK. So, the original variable has to be used instead of the
8241 already masked variable.
8242 [Richard Levitte <levitte@stacken.kth.se>]
8244 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
8245 [Richard Levitte <levitte@stacken.kth.se>]
8247 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
8248 from `int' to `unsigned int' because it's a length and initialized by
8249 EVP_DigestFinal() which expects an `unsigned int *'.
8250 [Richard Levitte <levitte@stacken.kth.se>]
8252 *) Don't hard-code path to Perl interpreter on shebang line of Configure
8253 script. Instead use the usual Shell->Perl transition trick.
8254 [Ralf S. Engelschall]
8256 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
8257 (in addition to RSA certificates) to match the behaviour of `openssl dsa
8258 -noout -modulus' as it's already the case for `openssl rsa -noout
8259 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
8260 currently the public key is printed (a decision which was already done by
8261 `openssl dsa -modulus' in the past) which serves a similar purpose.
8262 Additionally the NO_RSA no longer completely removes the whole -modulus
8263 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
8265 [Ralf S. Engelschall]
8267 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
8268 BIO. See the source (crypto/evp/bio_ok.c) for more info.
8269 [Arne Ansper <arne@ats.cyber.ee>]
8271 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
8272 to be added. Now both 'req' and 'ca' can use new objects defined in the
8276 *) Add cool BIO that does syslog (or event log on NT).
8277 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
8279 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
8280 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
8281 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
8282 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
8285 *) Add preliminary config info for new extension code.
8288 *) Make RSA_NO_PADDING really use no padding.
8289 [Ulf Moeller <ulf@fitug.de>]
8291 *) Generate errors when private/public key check is done.
8294 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
8295 for some CRL extensions and new objects added.
8298 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
8299 key usage extension and fuller support for authority key id.
8302 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
8303 padding method for RSA, which is recommended for new applications in PKCS
8304 #1 v2.0 (RFC 2437, October 1998).
8305 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
8306 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
8307 against Bleichbacher's attack on RSA.
8308 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
8311 *) Updates to the new SSL compression code
8312 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8314 *) Fix so that the version number in the master secret, when passed
8315 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
8316 (because the server will not accept higher), that the version number
8317 is 0x03,0x01, not 0x03,0x00
8318 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8320 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
8321 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
8322 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
8325 *) Support for RAW extensions where an arbitrary extension can be
8326 created by including its DER encoding. See apps/openssl.cnf for
8330 *) Make sure latest Perl versions don't interpret some generated C array
8331 code as Perl array code in the crypto/err/err_genc.pl script.
8332 [Lars Weber <3weber@informatik.uni-hamburg.de>]
8334 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
8335 not many people have the assembler. Various Win32 compilation fixes and
8336 update to the INSTALL.W32 file with (hopefully) more accurate Win32
8340 *) Modify configure script 'Configure' to automatically create crypto/date.h
8341 file under Win32 and also build pem.h from pem.org. New script
8342 util/mkfiles.pl to create the MINFO file on environments that can't do a
8343 'make files': perl util/mkfiles.pl >MINFO should work.
8346 *) Major rework of DES function declarations, in the pursuit of correctness
8347 and purity. As a result, many evil casts evaporated, and some weirdness,
8348 too. You may find this causes warnings in your code. Zapping your evil
8349 casts will probably fix them. Mostly.
8352 *) Fix for a typo in asn1.h. Bug fix to object creation script
8353 obj_dat.pl. It considered a zero in an object definition to mean
8354 "end of object": none of the objects in objects.h have any zeros
8355 so it wasn't spotted.
8356 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
8358 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
8359 Masking (CBCM). In the absence of test vectors, the best I have been able
8360 to do is check that the decrypt undoes the encrypt, so far. Send me test
8361 vectors if you have them.
8364 *) Correct calculation of key length for export ciphers (too much space was
8365 allocated for null ciphers). This has not been tested!
8368 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
8369 message is now correct (it understands "crypto" and "ssl" on its
8370 command line). There is also now an "update" option. This will update
8371 the util/ssleay.num and util/libeay.num files with any new functions.
8373 perl util/mkdef.pl crypto ssl update
8374 it will update them.
8377 *) Overhauled the Perl interface (perl/*):
8378 - ported BN stuff to OpenSSL's different BN library
8379 - made the perl/ source tree CVS-aware
8380 - renamed the package from SSLeay to OpenSSL (the files still contain
8381 their history because I've copied them in the repository)
8382 - removed obsolete files (the test scripts will be replaced
8383 by better Test::Harness variants in the future)
8384 [Ralf S. Engelschall]
8386 *) First cut for a very conservative source tree cleanup:
8387 1. merge various obsolete readme texts into doc/ssleay.txt
8388 where we collect the old documents and readme texts.
8389 2. remove the first part of files where I'm already sure that we no
8390 longer need them because of three reasons: either they are just temporary
8391 files which were left by Eric or they are preserved original files where
8392 I've verified that the diff is also available in the CVS via "cvs diff
8393 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8394 the crypto/md/ stuff).
8395 [Ralf S. Engelschall]
8397 *) More extension code. Incomplete support for subject and issuer alt
8398 name, issuer and authority key id. Change the i2v function parameters
8399 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8400 what that's for :-) Fix to ASN1 macro which messed up
8401 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8404 *) Preliminary support for ENUMERATED type. This is largely copied from the
8408 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8409 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8411 *) Make sure `make rehash' target really finds the `openssl' program.
8412 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8414 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8415 like to hear about it if this slows down other processors.
8418 *) Add CygWin32 platform information to Configure script.
8419 [Alan Batie <batie@aahz.jf.intel.com>]
8421 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8422 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8424 *) New program nseq to manipulate netscape certificate sequences
8427 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8431 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8432 but the BN code had some problems that would cause failures when
8433 doing certificate verification and some other functions.
8434 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8436 *) Add ASN1 and PEM code to support netscape certificate sequences.
8439 *) Add ASN1 and PEM code to support netscape certificate sequences.
8442 *) Add several PKIX and private extended key usage OIDs.
8445 *) Modify the 'ca' program to handle the new extension code. Modify
8446 openssl.cnf for new extension format, add comments.
8449 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8450 and add a sample to openssl.cnf so req -x509 now adds appropriate
8454 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8455 error code, add initial support to X509_print() and x509 application.
8458 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8459 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8460 stuff is currently isolated and isn't even compiled yet.
8463 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8464 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8465 Removed the versions check from X509 routines when loading extensions:
8466 this allows certain broken certificates that don't set the version
8467 properly to be processed.
8470 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8471 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8472 can still be regenerated with "make depend".
8475 *) Spelling mistake in C version of CAST-128.
8476 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8478 *) Changes to the error generation code. The perl script err-code.pl
8479 now reads in the old error codes and retains the old numbers, only
8480 adding new ones if necessary. It also only changes the .err files if new
8481 codes are added. The makefiles have been modified to only insert errors
8482 when needed (to avoid needlessly modifying header files). This is done
8483 by only inserting errors if the .err file is newer than the auto generated
8484 C file. To rebuild all the error codes from scratch (the old behaviour)
8485 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8486 or delete all the .err files.
8489 *) CAST-128 was incorrectly implemented for short keys. The C version has
8490 been fixed, but is untested. The assembler versions are also fixed, but
8491 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8492 to regenerate it if needed.
8493 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8494 Hagino <itojun@kame.net>]
8496 *) File was opened incorrectly in randfile.c.
8497 [Ulf Möller <ulf@fitug.de>]
8499 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8500 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8501 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8502 al: it's just almost always a UTCTime. Note this patch adds new error
8503 codes so do a "make errors" if there are problems.
8506 *) Correct Linux 1 recognition in config.
8507 [Ulf Möller <ulf@fitug.de>]
8509 *) Remove pointless MD5 hash when using DSA keys in ca.
8510 [Anonymous <nobody@replay.com>]
8512 *) Generate an error if given an empty string as a cert directory. Also
8513 generate an error if handed NULL (previously returned 0 to indicate an
8514 error, but didn't set one).
8515 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8517 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8520 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8521 parameters. This was causing a warning which killed off the Win32 compile.
8524 *) Remove C++ style comments from crypto/bn/bn_local.h.
8525 [Neil Costigan <neil.costigan@celocom.com>]
8527 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8528 based on a text string, looking up short and long names and finally
8529 "dot" format. The "dot" format stuff didn't work. Added new function
8530 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8531 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8532 OID is not part of the table.
8535 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8536 X509_LOOKUP_by_alias().
8539 *) Sort openssl functions by name.
8542 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8543 encryption from sample DSA keys (in case anyone is interested the password
8547 *) Make _all_ *_free functions accept a NULL pointer.
8548 [Frans Heymans <fheymans@isaserver.be>]
8550 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8552 [Anonymous <nobody@replay.com>]
8554 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8555 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8557 *) Don't blow it for numeric -newkey arguments to apps/req.
8558 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8560 *) Temp key "for export" tests were wrong in s3_srvr.c.
8561 [Anonymous <nobody@replay.com>]
8563 *) Add prototype for temp key callback functions
8564 SSL_CTX_set_tmp_{rsa,dh}_callback().
8567 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8568 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8571 *) X509_name_add_entry() freed the wrong thing after an error.
8572 [Arne Ansper <arne@ats.cyber.ee>]
8574 *) rsa_eay.c would attempt to free a NULL context.
8575 [Arne Ansper <arne@ats.cyber.ee>]
8577 *) BIO_s_socket() had a broken should_retry() on Windoze.
8578 [Arne Ansper <arne@ats.cyber.ee>]
8580 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8581 [Arne Ansper <arne@ats.cyber.ee>]
8583 *) Make sure the already existing X509_STORE->depth variable is initialized
8584 in X509_STORE_new(), but document the fact that this variable is still
8585 unused in the certificate verification process.
8586 [Ralf S. Engelschall]
8588 *) Fix the various library and apps files to free up pkeys obtained from
8589 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8592 *) Fix reference counting in X509_PUBKEY_get(). This makes
8593 demos/maurice/example2.c work, amongst others, probably.
8594 [Steve Henson and Ben Laurie]
8596 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8597 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8598 are no longer created. This way we have a single and consistent command
8599 line interface `openssl <command>', similar to `cvs <command>'.
8600 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8602 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8603 BIT STRING wrapper always have zero unused bits.
8606 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8609 *) Make the top-level INSTALL documentation easier to understand.
8612 *) Makefiles updated to exit if an error occurs in a sub-directory
8613 make (including if user presses ^C) [Paul Sutton]
8615 *) Make Montgomery context stuff explicit in RSA data structure.
8618 *) Fix build order of pem and err to allow for generated pem.h.
8621 *) Fix renumbering bug in X509_NAME_delete_entry().
8624 *) Enhanced the err-ins.pl script so it makes the error library number
8625 global and can add a library name. This is needed for external ASN1 and
8626 other error libraries.
8629 *) Fixed sk_insert which never worked properly.
8632 *) Fix ASN1 macros so they can handle indefinite length construted
8633 EXPLICIT tags. Some non standard certificates use these: they can now
8637 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8638 into a single doc/ssleay.txt bundle. This way the information is still
8639 preserved but no longer messes up this directory. Now it's new room for
8640 the new set of documenation files.
8641 [Ralf S. Engelschall]
8643 *) SETs were incorrectly DER encoded. This was a major pain, because they
8644 shared code with SEQUENCEs, which aren't coded the same. This means that
8645 almost everything to do with SETs or SEQUENCEs has either changed name or
8646 number of arguments.
8647 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8649 *) Fix test data to work with the above.
8652 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8653 was already fixed by Eric for 0.9.1 it seems.
8654 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8656 *) Autodetect FreeBSD3.
8659 *) Fix various bugs in Configure. This affects the following platforms:
8663 unixware-2.0-pentium
8667 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8668 before they are needed.
8671 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8675 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8677 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8678 changed SSLeay to OpenSSL in version strings.
8679 [Ralf S. Engelschall]
8681 *) Some fixups to the top-level documents.
8684 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8685 because the symlink to include/ was missing.
8686 [Ralf S. Engelschall]
8688 *) Incorporated the popular no-RSA/DSA-only patches
8689 which allow to compile a RSA-free SSLeay.
8690 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8692 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8693 when "ssleay" is still not found.
8694 [Ralf S. Engelschall]
8696 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8697 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8699 *) Updated the README file.
8700 [Ralf S. Engelschall]
8702 *) Added various .cvsignore files in the CVS repository subdirs
8703 to make a "cvs update" really silent.
8704 [Ralf S. Engelschall]
8706 *) Recompiled the error-definition header files and added
8707 missing symbols to the Win32 linker tables.
8708 [Ralf S. Engelschall]
8710 *) Cleaned up the top-level documents;
8711 o new files: CHANGES and LICENSE
8712 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8713 o merged COPYRIGHT into LICENSE
8714 o removed obsolete TODO file
8715 o renamed MICROSOFT to INSTALL.W32
8716 [Ralf S. Engelschall]
8718 *) Removed dummy files from the 0.9.1b source tree:
8719 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8720 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8721 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8722 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8723 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8724 [Ralf S. Engelschall]
8726 *) Added various platform portability fixes.
8729 *) The Genesis of the OpenSSL rpject:
8730 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8731 Young and Tim J. Hudson created while they were working for C2Net until
8733 [The OpenSSL Project]
8736 Changes between 0.9.0b and 0.9.1b [not released]
8738 *) Updated a few CA certificates under certs/
8741 *) Changed some BIGNUM api stuff.
8744 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8745 DGUX x86, Linux Alpha, etc.
8748 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8749 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8753 *) Add -strparse option to asn1pars program which parses nested
8755 [Dr Stephen Henson <shenson@bigfoot.com>]
8757 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8760 *) DSA fix for "ca" program.
8763 *) Added "-genkey" option to "dsaparam" program.
8766 *) Added RIPE MD160 (rmd160) message digest.
8769 *) Added -a (all) option to "ssleay version" command.
8772 *) Added PLATFORM define which is the id given to Configure.
8775 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8778 *) Extended the ASN.1 parser routines.
8781 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8784 *) Added a BN_CTX to the BN library.
8787 *) Fixed the weak key values in DES library
8790 *) Changed API in EVP library for cipher aliases.
8793 *) Added support for RC2/64bit cipher.
8796 *) Converted the lhash library to the crypto/mem.c functions.
8799 *) Added more recognized ASN.1 object ids.
8802 *) Added more RSA padding checks for SSL/TLS.
8805 *) Added BIO proxy/filter functionality.
8808 *) Added extra_certs to SSL_CTX which can be used
8809 send extra CA certificates to the client in the CA cert chain sending
8810 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8813 *) Now Fortezza is denied in the authentication phase because
8814 this is key exchange mechanism is not supported by SSLeay at all.
8817 *) Additional PKCS1 checks.
8820 *) Support the string "TLSv1" for all TLS v1 ciphers.
8823 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8824 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8827 *) Fixed a few memory leaks.
8830 *) Fixed various code and comment typos.
8833 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
8834 bytes sent in the client random.
8835 [Edward Bishop <ebishop@spyglass.com>]
projects / thirdparty / openssl.git / blob