5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) New functions to retrieve certificate signature and signature
11 *) Print out deprecated issuer and subject unique ID fields in
16 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
18 *) Support for automatic EC temporary key parameter selection. If enabled
19 the most preferred EC parameters are automatically used instead of
20 hardcoded fixed parameters. Now a server just has to call:
21 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
22 support ECDH and use the most appropriate parameters.
25 *) Enhance and tidy EC curve and point format TLS extension code. Use
26 static structures instead of allocation if default values are used.
27 New ctrls to set curves we wish to support and to retrieve shared curves.
28 Print out shared curves in s_server. New options to s_server and s_client
29 to set list of supported curves.
32 *) New ctrls to retrieve supported signature algorithms and
33 supported curve values as an array of NIDs. Extend openssl utility
34 to print out received values.
37 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
38 between NIDs and the more common NIST names such as "P-256". Enhance
39 ecparam utility and ECC method to recognise the NIST names for curves.
42 *) Enhance SSL/TLS certificate chain handling to support different
43 chains for each certificate instead of one chain in the parent SSL_CTX.
46 *) Support for fixed DH ciphersuite client authentication: where both
47 server and client use DH certificates with common parameters.
50 *) Support for fixed DH ciphersuites: those requiring DH server
54 *) Transparently support X9.42 DH parameters when calling
55 PEM_read_bio_DHparameters. This means existing applications can handle
56 the new parameter format automatically.
59 *) Initial experimental support for X9.42 DH parameter format: mainly
60 to support use of 'q' parameter for RFC5114 parameters.
63 *) Add DH parameters from RFC5114 including test data to dhtest.
66 *) Update fips_test_suite to support multiple command line options. New
67 test to induce all self test errors in sequence and check expected
71 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
72 sign or verify all in one operation.
75 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
76 test programs and fips_test_suite. Includes functionality to parse
77 the minimal script output of fipsalgest.pl directly.
80 *) Add authorisation parameter to FIPS_module_mode_set().
83 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
86 *) Use separate DRBG fields for internal and external flags. New function
87 FIPS_drbg_health_check() to perform on demand health checking. Add
88 generation tests to fips_test_suite with reduced health check interval to
89 demonstrate periodic health checking. Add "nodh" option to
90 fips_test_suite to skip very slow DH test.
93 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
97 *) More extensive health check for DRBG checking many more failure modes.
98 New function FIPS_selftest_drbg_all() to handle every possible DRBG
99 combination: call this in fips_test_suite.
102 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
103 and POST to handle Dual EC cases.
106 *) Add support for canonical generation of DSA parameter 'g'. See
109 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
110 POST to handle HMAC cases.
113 *) Add functions FIPS_module_version() and FIPS_module_version_text()
114 to return numberical and string versions of the FIPS module number.
117 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
118 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
119 outside the validated module in the FIPS capable OpenSSL.
122 *) Minor change to DRBG entropy callback semantics. In some cases
123 there is no mutiple of the block length between min_len and
124 max_len. Allow the callback to return more than max_len bytes
125 of entropy but discard any extra: it is the callback's responsibility
126 to ensure that the extra data discarded does not impact the
127 requested amount of entropy.
130 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
131 information in FIPS186-3, SP800-57 and SP800-131A.
134 *) CCM support via EVP. Interface is very similar to GCM case except we
135 must supply all data in one chunk (i.e. no update, final) and the
136 message length must be supplied if AAD is used. Add algorithm test
140 *) Initial version of POST overhaul. Add POST callback to allow the status
141 of POST to be monitored and/or failures induced. Modify fips_test_suite
142 to use callback. Always run all selftests even if one fails.
145 *) XTS support including algorithm test driver in the fips_gcmtest program.
146 Note: this does increase the maximum key length from 32 to 64 bytes but
147 there should be no binary compatibility issues as existing applications
148 will never use XTS mode.
151 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
152 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
153 performs algorithm blocking for unapproved PRNG types. Also do not
154 set PRNG type in FIPS_mode_set(): leave this to the application.
155 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
156 the standard OpenSSL PRNG: set additional data to a date time vector.
159 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
160 This shouldn't present any incompatibility problems because applications
161 shouldn't be using these directly and any that are will need to rethink
162 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
165 *) Extensive self tests and health checking required by SP800-90 DRBG.
166 Remove strength parameter from FIPS_drbg_instantiate and always
167 instantiate at maximum supported strength.
170 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
173 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
176 *) New function DH_compute_key_padded() to compute a DH key and pad with
177 leading zeroes if needed: this complies with SP800-56A et al.
180 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
181 anything, incomplete, subject to change and largely untested at present.
184 *) Modify fipscanisteronly build option to only build the necessary object
185 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
188 *) Add experimental option FIPSSYMS to give all symbols in
189 fipscanister.o and FIPS or fips prefix. This will avoid
190 conflicts with future versions of OpenSSL. Add perl script
191 util/fipsas.pl to preprocess assembly language source files
192 and rename any affected symbols.
195 *) Add selftest checks and algorithm block of non-fips algorithms in
196 FIPS mode. Remove DES2 from selftests.
199 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
200 return internal method without any ENGINE dependencies. Add new
201 tiny fips sign and verify functions.
204 *) New build option no-ec2m to disable characteristic 2 code.
207 *) New build option "fipscanisteronly". This only builds fipscanister.o
208 and (currently) associated fips utilities. Uses the file Makefile.fips
209 instead of Makefile.org as the prototype.
212 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
213 Update fips_gcmtest to use IV generator.
216 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
217 setting output buffer to NULL. The *Final function must be
218 called although it will not retrieve any additional data. The tag
219 can be set or retrieved with a ctrl. The IV length is by default 12
220 bytes (96 bits) but can be set to an alternative value. If the IV
221 length exceeds the maximum IV length (currently 16 bytes) it cannot be
225 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
226 underlying do_cipher function handles all cipher semantics itself
227 including padding and finalisation. This is useful if (for example)
228 an ENGINE cipher handles block padding itself. The behaviour of
229 do_cipher is subtly changed if this flag is set: the return value
230 is the number of characters written to the output buffer (zero is
231 no longer an error code) or a negative error code. Also if the
232 input buffer is NULL and length 0 finalisation should be performed.
235 *) If a candidate issuer certificate is already part of the constructed
236 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
239 *) Improve forward-security support: add functions
241 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
242 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
244 for use by SSL/TLS servers; the callback function will be called whenever a
245 new session is created, and gets to decide whether the session may be
246 cached to make it resumable (return 0) or not (return 1). (As by the
247 SSL/TLS protocol specifications, the session_id sent by the server will be
248 empty to indicate that the session is not resumable; also, the server will
249 not generate RFC 4507 (RFC 5077) session tickets.)
251 A simple reasonable callback implementation is to return is_forward_secure.
252 This parameter will be set to 1 or 0 depending on the ciphersuite selected
253 by the SSL/TLS server library, indicating whether it can provide forward
255 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
257 *) New function OPENSSL_gmtime_diff to find the difference in days
258 and seconds between two tm structures. This will be used to provide
259 additional functionality for ASN1_TIME.
262 *) Add -trusted_first option which attempts to find certificates in the
263 trusted store even if an untrusted chain is also supplied.
266 *) Initial experimental support for explicitly trusted non-root CAs.
267 OpenSSL still tries to build a complete chain to a root but if an
268 intermediate CA has a trust setting included that is used. The first
269 setting is used: whether to trust or reject.
272 *) New -verify_name option in command line utilities to set verification
276 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
277 Add CMAC pkey methods.
280 *) Experimental regnegotiation in s_server -www mode. If the client
281 browses /reneg connection is renegotiated. If /renegcert it is
282 renegotiated requesting a certificate.
285 *) Add an "external" session cache for debugging purposes to s_server. This
286 should help trace issues which normally are only apparent in deployed
287 multi-process servers.
290 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
291 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
292 BIO_set_cipher() and some obscure PEM functions were changed so they
293 can now return an error. The RAND changes required a change to the
294 RAND_METHOD structure.
297 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
298 a gcc attribute to warn if the result of a function is ignored. This
299 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
300 whose return value is often ignored.
303 Changes between 1.0.1c and 1.0.1d [xx XXX xxxx]
305 *) Fix possible deadlock when decoding public keys.
308 *) Don't use TLS 1.0 record version number in initial client hello
312 Changes between 1.0.1b and 1.0.1c [10 May 2012]
314 *) Sanity check record length before skipping explicit IV in TLS
315 1.2, 1.1 and DTLS to avoid DoS attack.
317 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
318 fuzzing as a service testing platform.
322 *) Initialise tkeylen properly when encrypting CMS messages.
323 Thanks to Solar Designer of Openwall for reporting this issue.
326 *) In FIPS mode don't try to use composite ciphers as they are not
330 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
332 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
333 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
334 mean any application compiled against OpenSSL 1.0.0 headers setting
335 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
336 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
337 0x10000000L Any application which was previously compiled against
338 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
339 will need to be recompiled as a result. Letting be results in
340 inability to disable specifically TLS 1.1 and in client context,
341 in unlike event, limit maximum offered version to TLS 1.0 [see below].
344 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
345 disable just protocol X, but all protocols above X *if* there are
346 protocols *below* X still enabled. In more practical terms it means
347 that if application wants to disable TLS1.0 in favor of TLS1.1 and
348 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
349 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
353 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
355 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
356 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
357 in CRYPTO_realloc_clean.
359 Thanks to Tavis Ormandy, Google Security Team, for discovering this
360 issue and to Adam Langley <agl@chromium.org> for fixing it.
362 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
364 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
367 *) Workarounds for some broken servers that "hang" if a client hello
368 record length exceeds 255 bytes:
370 1. Do not use record version number > TLS 1.0 in initial client
371 hello: some (but not all) hanging servers will now work.
372 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
373 the number of ciphers sent in the client hello. This should be
374 set to an even number, such as 50, for example by passing:
375 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
376 Most broken servers should now work.
377 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
378 TLS 1.2 client support entirely.
381 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
384 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
386 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
387 STRING form instead of a DigestInfo.
390 *) The format used for MDC2 RSA signatures is inconsistent between EVP
391 and the RSA_sign/RSA_verify functions. This was made more apparent when
392 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
393 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
394 the correct format in RSA_verify so both forms transparently work.
397 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
398 STRING form instead of a DigestInfo.
401 *) Some servers which support TLS 1.0 can choke if we initially indicate
402 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
403 encrypted premaster secret. As a workaround use the maximum pemitted
404 client version in client hello, this should keep such servers happy
405 and still work with previous versions of OpenSSL.
408 *) Add support for TLS/DTLS heartbeats.
409 [Robin Seggelmann <seggelmann@fh-muenster.de>]
411 *) Add support for SCTP.
412 [Robin Seggelmann <seggelmann@fh-muenster.de>]
414 *) Improved PRNG seeding for VOS.
415 [Paul Green <Paul.Green@stratus.com>]
417 *) Extensive assembler packs updates, most notably:
419 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
420 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
421 - x86_64: bit-sliced AES implementation;
422 - ARM: NEON support, contemporary platforms optimizations;
423 - s390x: z196 support;
424 - *: GHASH and GF(2^m) multiplication implementations;
428 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
429 (removal of unnecessary code)
430 [Peter Sylvester <peter.sylvester@edelweb.fr>]
432 *) Add TLS key material exporter from RFC 5705.
435 *) Add DTLS-SRTP negotiation from RFC 5764.
438 *) Add Next Protocol Negotiation,
439 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
440 disabled with a no-npn flag to config or Configure. Code donated
442 [Adam Langley <agl@google.com> and Ben Laurie]
444 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
445 NIST-P256, NIST-P521, with constant-time single point multiplication on
446 typical inputs. Compiler support for the nonstandard type __uint128_t is
447 required to use this (present in gcc 4.4 and later, for 64-bit builds).
448 Code made available under Apache License version 2.0.
450 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
451 line to include this in your build of OpenSSL, and run "make depend" (or
452 "make update"). This enables the following EC_METHODs:
454 EC_GFp_nistp224_method()
455 EC_GFp_nistp256_method()
456 EC_GFp_nistp521_method()
458 EC_GROUP_new_by_curve_name() will automatically use these (while
459 EC_GROUP_new_curve_GFp() currently prefers the more flexible
461 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
463 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
464 all platforms. Move ssize_t definition from e_os.h to the public
465 header file e_os2.h as it now appears in public header file cms.h
468 *) New -sigopt option to the ca, req and x509 utilities. Additional
469 signature parameters can be passed using this option and in
473 *) Add RSA PSS signing function. This will generate and set the
474 appropriate AlgorithmIdentifiers for PSS based on those in the
475 corresponding EVP_MD_CTX structure. No application support yet.
478 *) Support for companion algorithm specific ASN1 signing routines.
479 New function ASN1_item_sign_ctx() signs a pre-initialised
480 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
481 the appropriate parameters.
484 *) Add new algorithm specific ASN1 verification initialisation function
485 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
486 handling will be the same no matter what EVP_PKEY_METHOD is used.
487 Add a PSS handler to support verification of PSS signatures: checked
488 against a number of sample certificates.
491 *) Add signature printing for PSS. Add PSS OIDs.
492 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
494 *) Add algorithm specific signature printing. An individual ASN1 method
495 can now print out signatures instead of the standard hex dump.
497 More complex signatures (e.g. PSS) can print out more meaningful
498 information. Include DSA version that prints out the signature
502 *) Password based recipient info support for CMS library: implementing
506 *) Split password based encryption into PBES2 and PBKDF2 functions. This
507 neatly separates the code into cipher and PBE sections and is required
508 for some algorithms that split PBES2 into separate pieces (such as
512 *) Session-handling fixes:
513 - Fix handling of connections that are resuming with a session ID,
514 but also support Session Tickets.
515 - Fix a bug that suppressed issuing of a new ticket if the client
516 presented a ticket with an expired session.
517 - Try to set the ticket lifetime hint to something reasonable.
518 - Make tickets shorter by excluding irrelevant information.
519 - On the client side, don't ignore renewed tickets.
520 [Adam Langley, Bodo Moeller (Google)]
522 *) Fix PSK session representation.
525 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
527 This work was sponsored by Intel.
530 *) Add GCM support to TLS library. Some custom code is needed to split
531 the IV between the fixed (from PRF) and explicit (from TLS record)
532 portions. This adds all GCM ciphersuites supported by RFC5288 and
533 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
534 add a special AESGCM string for GCM only.
537 *) Expand range of ctrls for AES GCM. Permit setting invocation
538 field on decrypt and retrieval of invocation field only on encrypt.
541 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
542 As required by RFC5289 these ciphersuites cannot be used if for
543 versions of TLS earlier than 1.2.
546 *) For FIPS capable OpenSSL interpret a NULL default public key method
547 as unset and return the appopriate default but do *not* set the default.
548 This means we can return the appopriate method in applications that
549 swicth between FIPS and non-FIPS modes.
552 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
553 ENGINE is used then we cannot handle that in the FIPS module so we
554 keep original code iff non-FIPS operations are allowed.
557 *) Add -attime option to openssl utilities.
558 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
560 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
563 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
564 FIPS EC methods unconditionally for now.
567 *) New build option no-ec2m to disable characteristic 2 code.
570 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
571 all cases can be covered as some introduce binary incompatibilities.
574 *) Redirect RSA operations to FIPS module including keygen,
575 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
578 *) Add similar low level API blocking to ciphers.
581 *) Low level digest APIs are not approved in FIPS mode: any attempt
582 to use these will cause a fatal error. Applications that *really* want
583 to use them can use the private_* version instead.
586 *) Redirect cipher operations to FIPS module for FIPS builds.
589 *) Redirect digest operations to FIPS module for FIPS builds.
592 *) Update build system to add "fips" flag which will link in fipscanister.o
593 for static and shared library builds embedding a signature if needed.
596 *) Output TLS supported curves in preference order instead of numerical
597 order. This is currently hardcoded for the highest order curves first.
598 This should be configurable so applications can judge speed vs strength.
601 *) Add TLS v1.2 server support for client authentication.
604 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
608 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
609 FIPS modules versions.
612 *) Add TLS v1.2 client side support for client authentication. Keep cache
613 of handshake records longer as we don't know the hash algorithm to use
614 until after the certificate request message is received.
617 *) Initial TLS v1.2 client support. Add a default signature algorithms
618 extension including all the algorithms we support. Parse new signature
619 format in client key exchange. Relax some ECC signing restrictions for
620 TLS v1.2 as indicated in RFC5246.
623 *) Add server support for TLS v1.2 signature algorithms extension. Switch
624 to new signature format when needed using client digest preference.
625 All server ciphersuites should now work correctly in TLS v1.2. No client
626 support yet and no support for client certificates.
629 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
630 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
631 ciphersuites. At present only RSA key exchange ciphersuites work with
632 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
633 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
634 and version checking.
637 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
638 with this defined it will not be affected by any changes to ssl internal
639 structures. Add several utility functions to allow openssl application
640 to work with OPENSSL_NO_SSL_INTERN defined.
644 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
646 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
649 *) Permit abbreviated handshakes when renegotiating using the function
650 SSL_renegotiate_abbreviated().
651 [Robin Seggelmann <seggelmann@fh-muenster.de>]
653 *) Add call to ENGINE_register_all_complete() to
654 ENGINE_load_builtin_engines(), so some implementations get used
655 automatically instead of needing explicit application support.
658 *) Add support for TLS key exporter as described in RFC5705.
659 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
661 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
662 a few changes are required:
664 Add SSL_OP_NO_TLSv1_1 flag.
666 Update version checking logic to handle version 1.1.
667 Add explicit IV handling (ported from DTLS code).
668 Add command line options to s_client/s_server.
671 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
673 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
674 in CMS and PKCS7 code. When RSA decryption fails use a random key for
675 content decryption and always return the same error. Note: this attack
676 needs on average 2^20 messages so it only affects automated senders. The
677 old behaviour can be reenabled in the CMS code by setting the
678 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
679 an MMA defence is not necessary.
680 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
681 this issue. (CVE-2012-0884)
684 *) Fix CVE-2011-4619: make sure we really are receiving a
685 client hello before rejecting multiple SGC restarts. Thanks to
686 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
689 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
691 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
692 Thanks to Antonio Martin, Enterprise Secure Access Research and
693 Development, Cisco Systems, Inc. for discovering this bug and
694 preparing a fix. (CVE-2012-0050)
697 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
699 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
700 of the Vaudenay padding oracle attack on CBC mode encryption
701 which enables an efficient plaintext recovery attack against
702 the OpenSSL implementation of DTLS. Their attack exploits timing
703 differences arising during decryption processing. A research
704 paper describing this attack can be found at:
705 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
706 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
707 Security Group at Royal Holloway, University of London
708 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
709 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
710 for preparing the fix. (CVE-2011-4108)
711 [Robin Seggelmann, Michael Tuexen]
713 *) Clear bytes used for block padding of SSL 3.0 records.
715 [Adam Langley (Google)]
717 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
718 Kadianakis <desnacked@gmail.com> for discovering this issue and
719 Adam Langley for preparing the fix. (CVE-2011-4619)
720 [Adam Langley (Google)]
722 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
723 [Andrey Kulikov <amdeich@gmail.com>]
725 *) Prevent malformed RFC3779 data triggering an assertion failure.
726 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
727 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
728 [Rob Austein <sra@hactrn.net>]
730 *) Improved PRNG seeding for VOS.
731 [Paul Green <Paul.Green@stratus.com>]
733 *) Fix ssl_ciph.c set-up race.
734 [Adam Langley (Google)]
736 *) Fix spurious failures in ecdsatest.c.
737 [Emilia Käsper (Google)]
739 *) Fix the BIO_f_buffer() implementation (which was mixing different
740 interpretations of the '..._len' fields).
741 [Adam Langley (Google)]
743 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
744 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
745 threads won't reuse the same blinding coefficients.
747 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
748 lock to call BN_BLINDING_invert_ex, and avoids one use of
749 BN_BLINDING_update for each BN_BLINDING structure (previously,
750 the last update always remained unused).
751 [Emilia Käsper (Google)]
753 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
754 [Bob Buckholz (Google)]
756 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
758 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
759 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
760 [Kaspar Brand <ossl@velox.ch>]
762 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
763 for multi-threaded use of ECDH. (CVE-2011-3210)
764 [Adam Langley (Google)]
766 *) Fix x509_name_ex_d2i memory leak on bad inputs.
769 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
770 signature public key algorithm by using OID xref utilities instead.
771 Before this you could only use some ECC ciphersuites with SHA1 only.
774 *) Add protection against ECDSA timing attacks as mentioned in the paper
775 by Billy Bob Brumley and Nicola Tuveri, see:
777 http://eprint.iacr.org/2011/232.pdf
779 [Billy Bob Brumley and Nicola Tuveri]
781 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
783 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
784 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
786 *) Fix bug in string printing code: if *any* escaping is enabled we must
787 escape the escape character (backslash) or the resulting string is
791 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
793 *) Disable code workaround for ancient and obsolete Netscape browsers
794 and servers: an attacker can use it in a ciphersuite downgrade attack.
795 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
798 *) Fixed J-PAKE implementation error, originally discovered by
799 Sebastien Martini, further info and confirmation from Stefan
800 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
803 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
805 *) Fix extension code to avoid race conditions which can result in a buffer
806 overrun vulnerability: resumed sessions must not be modified as they can
807 be shared by multiple threads. CVE-2010-3864
810 *) Fix WIN32 build system to correctly link an ENGINE directory into
814 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
816 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
818 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
820 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
822 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
823 context. The operation can be customised via the ctrl mechanism in
824 case ENGINEs want to include additional functionality.
827 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
830 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
831 output hashes compatible with older versions of OpenSSL.
832 [Willy Weisz <weisz@vcpc.univie.ac.at>]
834 *) Fix compression algorithm handling: if resuming a session use the
835 compression algorithm of the resumed session instead of determining
836 it from client hello again. Don't allow server to change algorithm.
839 *) Add load_crls() function to apps tidying load_certs() too. Add option
840 to verify utility to allow additional CRLs to be included.
843 *) Update OCSP request code to permit adding custom headers to the request:
844 some responders need this.
847 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
849 [Julia Lawall <julia@diku.dk>]
851 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
852 needlessly dereferenced structures, used obsolete functions and
853 didn't handle all updated verify codes correctly.
856 *) Disable MD2 in the default configuration.
859 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
860 indicate the initial BIO being pushed or popped. This makes it possible
861 to determine whether the BIO is the one explicitly called or as a result
862 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
863 it handles reference counts correctly and doesn't zero out the I/O bio
864 when it is not being explicitly popped. WARNING: applications which
865 included workarounds for the old buggy behaviour will need to be modified
866 or they could free up already freed BIOs.
869 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
870 renaming to all platforms (within the 0.9.8 branch, this was
871 done conditionally on Netware platforms to avoid a name clash).
872 [Guenter <lists@gknw.net>]
874 *) Add ECDHE and PSK support to DTLS.
875 [Michael Tuexen <tuexen@fh-muenster.de>]
877 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
881 *) Add "missing" function EVP_MD_flags() (without this the only way to
882 retrieve a digest flags is by accessing the structure directly. Update
883 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
884 or cipher is registered as in the "from" argument. Print out all
885 registered digests in the dgst usage message instead of manually
886 attempting to work them out.
889 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
890 this allows the use of compression and extensions. Change default cipher
891 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
892 by default unless an application cipher string requests it.
895 *) Alter match criteria in PKCS12_parse(). It used to try to use local
896 key ids to find matching certificates and keys but some PKCS#12 files
897 don't follow the (somewhat unwritten) rules and this strategy fails.
898 Now just gather all certificates together and the first private key
899 then look for the first certificate that matches the key.
902 *) Support use of registered digest and cipher names for dgst and cipher
903 commands instead of having to add each one as a special case. So now
910 openssl dgst -sha256 foo
912 and this works for ENGINE based algorithms too.
916 *) Update Gost ENGINE to support parameter files.
917 [Victor B. Wagner <vitus@cryptocom.ru>]
919 *) Support GeneralizedTime in ca utility.
920 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
922 *) Enhance the hash format used for certificate directory links. The new
923 form uses the canonical encoding (meaning equivalent names will work
924 even if they aren't identical) and uses SHA1 instead of MD5. This form
925 is incompatible with the older format and as a result c_rehash should
926 be used to rebuild symbolic links.
929 *) Make PKCS#8 the default write format for private keys, replacing the
930 traditional format. This form is standardised, more secure and doesn't
931 include an implicit MD5 dependency.
934 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
935 committed to OpenSSL should pass this lot as a minimum.
938 *) Add session ticket override functionality for use by EAP-FAST.
939 [Jouni Malinen <j@w1.fi>]
941 *) Modify HMAC functions to return a value. Since these can be implemented
942 in an ENGINE errors can occur.
945 *) Type-checked OBJ_bsearch_ex.
948 *) Type-checked OBJ_bsearch. Also some constification necessitated
949 by type-checking. Still to come: TXT_DB, bsearch(?),
950 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
954 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
955 seconds to a tm structure directly, instead of going through OS
956 specific date routines. This avoids any issues with OS routines such
957 as the year 2038 bug. New *_adj() functions for ASN1 time structures
958 and X509_time_adj_ex() to cover the extended range. The existing
959 X509_time_adj() is still usable and will no longer have any date issues.
962 *) Delta CRL support. New use deltas option which will attempt to locate
963 and search any appropriate delta CRLs available.
965 This work was sponsored by Google.
968 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
969 code and add additional score elements. Validate alternate CRL paths
970 as part of the CRL checking and indicate a new error "CRL path validation
971 error" in this case. Applications wanting additional details can use
972 the verify callback and check the new "parent" field. If this is not
973 NULL CRL path validation is taking place. Existing applications wont
974 see this because it requires extended CRL support which is off by
977 This work was sponsored by Google.
980 *) Support for freshest CRL extension.
982 This work was sponsored by Google.
985 *) Initial indirect CRL support. Currently only supported in the CRLs
986 passed directly and not via lookup. Process certificate issuer
987 CRL entry extension and lookup CRL entries by bother issuer name
988 and serial number. Check and process CRL issuer entry in IDP extension.
990 This work was sponsored by Google.
993 *) Add support for distinct certificate and CRL paths. The CRL issuer
994 certificate is validated separately in this case. Only enabled if
995 an extended CRL support flag is set: this flag will enable additional
996 CRL functionality in future.
998 This work was sponsored by Google.
1001 *) Add support for policy mappings extension.
1003 This work was sponsored by Google.
1006 *) Fixes to pathlength constraint, self issued certificate handling,
1007 policy processing to align with RFC3280 and PKITS tests.
1009 This work was sponsored by Google.
1012 *) Support for name constraints certificate extension. DN, email, DNS
1013 and URI types are currently supported.
1015 This work was sponsored by Google.
1018 *) To cater for systems that provide a pointer-based thread ID rather
1019 than numeric, deprecate the current numeric thread ID mechanism and
1020 replace it with a structure and associated callback type. This
1021 mechanism allows a numeric "hash" to be extracted from a thread ID in
1022 either case, and on platforms where pointers are larger than 'long',
1023 mixing is done to help ensure the numeric 'hash' is usable even if it
1024 can't be guaranteed unique. The default mechanism is to use "&errno"
1025 as a pointer-based thread ID to distinguish between threads.
1027 Applications that want to provide their own thread IDs should now use
1028 CRYPTO_THREADID_set_callback() to register a callback that will call
1029 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1031 Note that ERR_remove_state() is now deprecated, because it is tied
1032 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1033 to free the current thread's error state should be replaced by
1034 ERR_remove_thread_state(NULL).
1036 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1037 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1038 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1039 application was previously providing a numeric thread callback that
1040 was inappropriate for distinguishing threads, then uniqueness might
1041 have been obtained with &errno that happened immediately in the
1042 intermediate development versions of OpenSSL; this is no longer the
1043 case, the numeric thread callback will now override the automatic use
1045 [Geoff Thorpe, with help from Bodo Moeller]
1047 *) Initial support for different CRL issuing certificates. This covers a
1048 simple case where the self issued certificates in the chain exist and
1049 the real CRL issuer is higher in the existing chain.
1051 This work was sponsored by Google.
1054 *) Removed effectively defunct crypto/store from the build.
1057 *) Revamp of STACK to provide stronger type-checking. Still to come:
1058 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1059 ASN1_STRING, CONF_VALUE.
1062 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1063 RAM on SSL connections. This option can save about 34k per idle SSL.
1066 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1067 STACK, TXT_DB, bsearch, qsort.
1070 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1071 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1072 support for data, signedData, compressedData, digestedData and
1073 encryptedData, envelopedData types included. Scripts to check against
1074 RFC4134 examples draft and interop and consistency checks of many
1075 content types and variants.
1078 *) Add options to enc utility to support use of zlib compression BIO.
1081 *) Extend mk1mf to support importing of options and assembly language
1082 files from Configure script, currently only included in VC-WIN32.
1083 The assembly language rules can now optionally generate the source
1084 files from the associated perl scripts.
1087 *) Implement remaining functionality needed to support GOST ciphersuites.
1088 Interop testing has been performed using CryptoPro implementations.
1089 [Victor B. Wagner <vitus@cryptocom.ru>]
1091 *) s390x assembler pack.
1094 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1098 *) Implement Opaque PRF Input TLS extension as specified in
1099 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1100 official specification yet and no extension type assignment by
1101 IANA exists, this extension (for now) will have to be explicitly
1102 enabled when building OpenSSL by providing the extension number
1103 to use. For example, specify an option
1105 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1107 to the "config" or "Configure" script to enable the extension,
1108 assuming extension number 0x9527 (which is a completely arbitrary
1109 and unofficial assignment based on the MD5 hash of the Internet
1110 Draft). Note that by doing so, you potentially lose
1111 interoperability with other TLS implementations since these might
1112 be using the same extension number for other purposes.
1114 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1115 opaque PRF input value to use in the handshake. This will create
1116 an interal copy of the length-'len' string at 'src', and will
1117 return non-zero for success.
1119 To get more control and flexibility, provide a callback function
1122 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1123 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1127 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1130 Callback function 'cb' will be called in handshakes, and is
1131 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1132 Argument 'arg' is for application purposes (the value as given to
1133 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1134 be provided to the callback function). The callback function
1135 has to return non-zero to report success: usually 1 to use opaque
1136 PRF input just if possible, or 2 to enforce use of the opaque PRF
1137 input. In the latter case, the library will abort the handshake
1138 if opaque PRF input is not successfully negotiated.
1140 Arguments 'peerinput' and 'len' given to the callback function
1141 will always be NULL and 0 in the case of a client. A server will
1142 see the client's opaque PRF input through these variables if
1143 available (NULL and 0 otherwise). Note that if the server
1144 provides an opaque PRF input, the length must be the same as the
1145 length of the client's opaque PRF input.
1147 Note that the callback function will only be called when creating
1148 a new session (session resumption can resume whatever was
1149 previously negotiated), and will not be called in SSL 2.0
1150 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1151 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1152 for applications that need to enforce opaque PRF input.
1156 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1159 [Victor B. Wagner <vitus@cryptocom.ru>]
1161 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1162 RFC4507bis. The encrypted ticket format is an encrypted encoded
1163 SSL_SESSION structure, that way new session features are automatically
1166 If a client application caches session in an SSL_SESSION structure
1167 support is transparent because tickets are now stored in the encoded
1170 The SSL_CTX structure automatically generates keys for ticket
1171 protection in servers so again support should be possible
1172 with no application modification.
1174 If a client or server wishes to disable RFC4507 support then the option
1175 SSL_OP_NO_TICKET can be set.
1177 Add a TLS extension debugging callback to allow the contents of any client
1178 or server extensions to be examined.
1180 This work was sponsored by Google.
1183 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1184 OpenSSL should now compile cleanly on gcc 4.2
1185 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1187 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1188 support including streaming MAC support: this is required for GOST
1189 ciphersuite support.
1190 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1192 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1193 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1194 to output in BER and PEM format.
1197 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1198 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1199 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1200 ENGINE support for HMAC keys which are unextractable. New -mac and
1201 -macopt options to dgst utility.
1204 *) New option -sigopt to dgst utility. Update dgst to use
1205 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1206 alternative signing paramaters such as X9.31 or PSS in the dgst
1210 *) Change ssl_cipher_apply_rule(), the internal function that does
1211 the work each time a ciphersuite string requests enabling
1212 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1213 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1214 the order of disabled ciphersuites such that those ciphersuites
1215 that most recently went from enabled to disabled not only stay
1216 in order with respect to each other, but also have higher priority
1217 than other disabled ciphersuites the next time ciphersuites are
1220 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1221 the same ciphersuites as with "HIGH" alone, but in a specific
1222 order where the PSK ciphersuites come first (since they are the
1223 most recently disabled ciphersuites when "HIGH" is parsed).
1225 Also, change ssl_create_cipher_list() (using this new
1226 funcionality) such that between otherwise identical
1227 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1231 *) Change ssl_create_cipher_list() so that it automatically
1232 arranges the ciphersuites in reasonable order before starting
1233 to process the rule string. Thus, the definition for "DEFAULT"
1234 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1235 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1236 This makes it much easier to arrive at a reasonable default order
1237 in applications for which anonymous ciphers are OK (meaning
1238 that you can't actually use DEFAULT).
1239 [Bodo Moeller; suggested by Victor Duchovni]
1241 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1242 processing) into multiple integers instead of setting
1243 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1244 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1245 (These masks as well as the individual bit definitions are hidden
1246 away into the non-exported interface ssl/ssl_locl.h, so this
1247 change to the definition of the SSL_CIPHER structure shouldn't
1248 affect applications.) This give us more bits for each of these
1249 categories, so there is no longer a need to coagulate AES128 and
1250 AES256 into a single algorithm bit, and to coagulate Camellia128
1251 and Camellia256 into a single algorithm bit, which has led to all
1254 Thus, among other things, the kludge introduced in 0.9.7m and
1255 0.9.8e for masking out AES256 independently of AES128 or masking
1256 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1258 With the change, we also introduce new ciphersuite aliases that
1259 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1263 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1264 Use the leftmost N bytes of the signature input if the input is
1265 larger than the prime q (with N being the size in bytes of q).
1268 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1269 it yet and it is largely untested.
1272 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1275 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1276 some compilers (gcc 4.2 and later) reject their use. Safestack is
1277 reimplemented. Update ASN1 to avoid use of legacy functions.
1280 *) Win32/64 targets are linked with Winsock2.
1283 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1284 to external functions. This can be used to increase CRL handling
1285 efficiency especially when CRLs are very large by (for example) storing
1286 the CRL revoked certificates in a database.
1289 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1290 new CRLs added to a directory can be used. New command line option
1291 -verify_return_error to s_client and s_server. This causes real errors
1292 to be returned by the verify callback instead of carrying on no matter
1293 what. This reflects the way a "real world" verify callback would behave.
1296 *) GOST engine, supporting several GOST algorithms and public key formats.
1297 Kindly donated by Cryptocom.
1300 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1301 partitioned by DP are handled but no indirect CRL or reason partitioning
1302 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1303 selected via a scoring technique which handles IDP and AKID in CRLs.
1306 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1307 will ultimately be used for all verify operations: this will remove the
1308 X509_STORE dependency on certificate verification and allow alternative
1309 lookup methods. X509_STORE based implementations of these two callbacks.
1312 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1313 Modify get_crl() to find a valid (unexpired) CRL if possible.
1316 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1317 this would be called X509_CRL_cmp() but that name is already used by
1318 a function that just compares CRL issuer names. Cache several CRL
1319 extensions in X509_CRL structure and cache CRLDP in X509.
1322 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1323 this maps equivalent X509_NAME structures into a consistent structure.
1324 Name comparison can then be performed rapidly using memcmp().
1327 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1331 *) Allow digests to supply their own micalg string for S/MIME type using
1332 the ctrl EVP_MD_CTRL_MICALG.
1335 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1336 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1337 ctrl. It can then customise the structure before and/or after signing
1341 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1342 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1343 to free up any added signature OIDs.
1346 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1347 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1348 digest and cipher tables. New options added to openssl utility:
1349 list-message-digest-algorithms and list-cipher-algorithms.
1352 *) Change the array representation of binary polynomials: the list
1353 of degrees of non-zero coefficients is now terminated with -1.
1354 Previously it was terminated with 0, which was also part of the
1355 value; thus, the array representation was not applicable to
1356 polynomials where t^0 has coefficient zero. This change makes
1357 the array representation useful in a more general context.
1360 *) Various modifications and fixes to SSL/TLS cipher string
1361 handling. For ECC, the code now distinguishes between fixed ECDH
1362 with RSA certificates on the one hand and with ECDSA certificates
1363 on the other hand, since these are separate ciphersuites. The
1364 unused code for Fortezza ciphersuites has been removed.
1366 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1367 (not "ECDHE"). For consistency with the code for DH
1368 certificates, use of ECDH certificates is now considered ECDH
1369 authentication, not RSA or ECDSA authentication (the latter is
1370 merely the CA's signing algorithm and not actively used in the
1373 The temporary ciphersuite alias "ECCdraft" is no longer
1374 available, and ECC ciphersuites are no longer excluded from "ALL"
1375 and "DEFAULT". The following aliases now exist for RFC 4492
1376 ciphersuites, most of these by analogy with the DH case:
1378 kECDHr - ECDH cert, signed with RSA
1379 kECDHe - ECDH cert, signed with ECDSA
1380 kECDH - ECDH cert (signed with either RSA or ECDSA)
1381 kEECDH - ephemeral ECDH
1382 ECDH - ECDH cert or ephemeral ECDH
1388 AECDH - anonymous ECDH
1389 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1393 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1394 Use correct micalg parameters depending on digest(s) in signed message.
1397 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1398 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1401 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1402 an engine to register a method. Add ENGINE lookups for methods and
1403 functional reference processing.
1406 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1407 EVP_{Sign,Verify}* which allow an application to customise the signature
1411 *) New -resign option to smime utility. This adds one or more signers
1412 to an existing PKCS#7 signedData structure. Also -md option to use an
1413 alternative message digest algorithm for signing.
1416 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1417 create PKCS7 structures containing multiple signers. Update smime
1418 application to support multiple signers.
1421 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1425 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1426 Reorganize PBE internals to lookup from a static table using NIDs,
1427 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1428 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1429 PRF which will be automatically used with PBES2.
1432 *) Replace the algorithm specific calls to generate keys in "req" with the
1436 *) Update PKCS#7 enveloped data routines to use new API. This is now
1437 supported by any public key method supporting the encrypt operation. A
1438 ctrl is added to allow the public key algorithm to examine or modify
1439 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1443 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1444 a default digest type to use. In most cases this will be SHA1 but some
1445 algorithms (such as GOST) need to specify an alternative digest. The
1446 return value indicates how strong the prefernce is 1 means optional and
1447 2 is mandatory (that is it is the only supported type). Modify
1448 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1449 use the default md. Update openssl utilities to use the default digest
1450 type for signing if it is not explicitly indicated.
1453 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1454 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1455 signing method from the key type. This effectively removes the link
1456 between digests and public key types.
1459 *) Add an OID cross reference table and utility functions. Its purpose is to
1460 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1461 rsaEncryption. This will allow some of the algorithm specific hackery
1462 needed to use the correct OID to be removed.
1465 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1466 structures for PKCS7_sign(). They are now set up by the relevant public
1470 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1473 *) Add support for key derivation (agreement) in the API, DH method and
1477 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1478 public and private key formats. As a side effect these add additional
1479 command line functionality not previously available: DSA signatures can be
1480 generated and verified using pkeyutl and DH key support and generation in
1485 [Oliver Tappe <zooey@hirschkaefer.de>]
1487 *) New make target "install_html_docs" installs HTML renditions of the
1489 [Oliver Tappe <zooey@hirschkaefer.de>]
1491 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1492 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1493 support key and parameter generation and add initial key generation
1494 functionality for RSA.
1497 *) Add functions for main EVP_PKEY_method operations. The undocumented
1498 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1499 EVP_PKEY_{encrypt,decrypt}_old.
1502 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1503 key API, doesn't do much yet.
1506 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1507 public key algorithms. New option to openssl utility:
1508 "list-public-key-algorithms" to print out info.
1511 *) Implement the Supported Elliptic Curves Extension for
1512 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1515 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1516 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1519 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1520 utilities such as rsa, dsa, dsaparam etc except they process any key
1524 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1525 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1526 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1530 *) Initial support for pluggable public key ASN1.
1531 De-spaghettify the public key ASN1 handling. Move public and private
1532 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1533 algorithm specific handling to a single module within the relevant
1534 algorithm directory. Add functions to allow (near) opaque processing
1535 of public and private key structures.
1538 *) Implement the Supported Point Formats Extension for
1539 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1542 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1543 for the psk identity [hint] and the psk callback functions to the
1544 SSL_SESSION, SSL and SSL_CTX structure.
1547 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1551 SSL_CTX_use_psk_identity_hint
1552 SSL_get_psk_identity_hint
1553 SSL_get_psk_identity
1554 SSL_use_psk_identity_hint
1556 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1558 *) Add RFC 3161 compliant time stamp request creation, response generation
1559 and response verification functionality.
1560 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1562 *) Add initial support for TLS extensions, specifically for the server_name
1563 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1564 have new members for a host name. The SSL data structure has an
1565 additional member SSL_CTX *initial_ctx so that new sessions can be
1566 stored in that context to allow for session resumption, even after the
1567 SSL has been switched to a new SSL_CTX in reaction to a client's
1568 server_name extension.
1570 New functions (subject to change):
1572 SSL_get_servername()
1573 SSL_get_servername_type()
1576 New CTRL codes and macros (subject to change):
1578 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1579 - SSL_CTX_set_tlsext_servername_callback()
1580 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1581 - SSL_CTX_set_tlsext_servername_arg()
1582 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1584 openssl s_client has a new '-servername ...' option.
1586 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1587 '-key2 ...', '-servername_fatal' (subject to change). This allows
1588 testing the HostName extension for a specific single host name ('-cert'
1589 and '-key' remain fallbacks for handshakes without HostName
1590 negotiation). If the unrecogninzed_name alert has to be sent, this by
1591 default is a warning; it becomes fatal with the '-servername_fatal'
1594 [Peter Sylvester, Remy Allais, Christophe Renou]
1596 *) Whirlpool hash implementation is added.
1599 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1600 bn(64,32). Because of instruction set limitations it doesn't have
1601 any negative impact on performance. This was done mostly in order
1602 to make it possible to share assembler modules, such as bn_mul_mont
1603 implementations, between 32- and 64-bit builds without hassle.
1606 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1607 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1611 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1612 dedicated Montgomery multiplication procedure, is introduced.
1613 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1614 "64-bit" performance on certain 32-bit targets.
1617 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1618 in SSL structures. New SSL ctrl to set maximum send fragment size.
1619 Save memory by seeting the I/O buffer sizes dynamically instead of
1620 using the maximum available value.
1623 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1624 in addition to the text details.
1627 *) Very, very preliminary EXPERIMENTAL support for printing of general
1628 ASN1 structures. This currently produces rather ugly output and doesn't
1629 handle several customised structures at all.
1632 *) Integrated support for PVK file format and some related formats such
1633 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1634 these in the 'rsa' and 'dsa' utilities.
1637 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1640 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1641 place for the (very old) "NETSCAPE" format certificates which are now
1642 handled using new ASN1 code equivalents.
1645 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1646 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1647 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1650 *) Modify CRL distribution points extension code to print out previously
1651 unsupported fields. Enhance extension setting code to allow setting of
1655 *) Add print and set support for Issuing Distribution Point CRL extension.
1658 *) Change 'Configure' script to enable Camellia by default.
1661 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1663 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1664 Thanks to Antonio Martin, Enterprise Secure Access Research and
1665 Development, Cisco Systems, Inc. for discovering this bug and
1666 preparing a fix. (CVE-2012-0050)
1669 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1671 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1672 of the Vaudenay padding oracle attack on CBC mode encryption
1673 which enables an efficient plaintext recovery attack against
1674 the OpenSSL implementation of DTLS. Their attack exploits timing
1675 differences arising during decryption processing. A research
1676 paper describing this attack can be found at:
1677 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1678 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1679 Security Group at Royal Holloway, University of London
1680 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1681 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1682 for preparing the fix. (CVE-2011-4108)
1683 [Robin Seggelmann, Michael Tuexen]
1685 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1686 [Ben Laurie, Kasper <ekasper@google.com>]
1688 *) Clear bytes used for block padding of SSL 3.0 records.
1690 [Adam Langley (Google)]
1692 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1693 Kadianakis <desnacked@gmail.com> for discovering this issue and
1694 Adam Langley for preparing the fix. (CVE-2011-4619)
1695 [Adam Langley (Google)]
1697 *) Prevent malformed RFC3779 data triggering an assertion failure.
1698 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1699 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1700 [Rob Austein <sra@hactrn.net>]
1702 *) Fix ssl_ciph.c set-up race.
1703 [Adam Langley (Google)]
1705 *) Fix spurious failures in ecdsatest.c.
1706 [Emilia Käsper (Google)]
1708 *) Fix the BIO_f_buffer() implementation (which was mixing different
1709 interpretations of the '..._len' fields).
1710 [Adam Langley (Google)]
1712 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1713 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1714 threads won't reuse the same blinding coefficients.
1716 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1717 lock to call BN_BLINDING_invert_ex, and avoids one use of
1718 BN_BLINDING_update for each BN_BLINDING structure (previously,
1719 the last update always remained unused).
1720 [Emilia Käsper (Google)]
1722 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1723 for multi-threaded use of ECDH.
1724 [Adam Langley (Google)]
1726 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1729 *) Add protection against ECDSA timing attacks as mentioned in the paper
1730 by Billy Bob Brumley and Nicola Tuveri, see:
1732 http://eprint.iacr.org/2011/232.pdf
1734 [Billy Bob Brumley and Nicola Tuveri]
1736 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1738 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1739 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1741 *) Fix bug in string printing code: if *any* escaping is enabled we must
1742 escape the escape character (backslash) or the resulting string is
1746 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1748 *) Disable code workaround for ancient and obsolete Netscape browsers
1749 and servers: an attacker can use it in a ciphersuite downgrade attack.
1750 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1753 *) Fixed J-PAKE implementation error, originally discovered by
1754 Sebastien Martini, further info and confirmation from Stefan
1755 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1758 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1760 *) Fix extension code to avoid race conditions which can result in a buffer
1761 overrun vulnerability: resumed sessions must not be modified as they can
1762 be shared by multiple threads. CVE-2010-3864
1765 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1768 *) Don't reencode certificate when calculating signature: cache and use
1769 the original encoding instead. This makes signature verification of
1770 some broken encodings work correctly.
1773 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1774 is also one of the inputs.
1775 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1777 *) Don't repeatedly append PBE algorithms to table if they already exist.
1778 Sort table on each new add. This effectively makes the table read only
1779 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1783 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1785 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1788 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1789 access or freeing data twice (CVE-2010-0742)
1790 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1792 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1793 common in certificates and some applications which only call
1794 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1798 Reduce copying into .apps and .test in makevms.com
1799 Don't try to use blank CA certificate in CA.com
1800 Allow use of C files from original directories in maketests.com
1801 [Steven M. Schweda" <sms@antinode.info>]
1803 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1805 *) When rejecting SSL/TLS records due to an incorrect version number, never
1806 update s->server with a new major version number. As of
1807 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1808 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1809 the previous behavior could result in a read attempt at NULL when
1810 receiving specific incorrect SSL/TLS records once record payload
1811 protection is active. (CVE-2010-0740)
1812 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1814 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1815 could be crashed if the relevant tables were not present (e.g. chrooted).
1816 [Tomas Hoger <thoger@redhat.com>]
1818 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1820 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1821 [Martin Olsson, Neel Mehta]
1823 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1824 accommodate for stack sorting, always a write lock!).
1827 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1828 excessive delays in the RAND_poll(): over a minute. As a workaround
1829 include a time check in the inner Heap32Next loop too.
1832 *) The code that handled flushing of data in SSL/TLS originally used the
1833 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1834 the problem outlined in PR#1949. The fix suggested there however can
1835 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1836 of Apache). So instead simplify the code to flush unconditionally.
1837 This should be fine since flushing with no data to flush is a no op.
1840 *) Handle TLS versions 2.0 and later properly and correctly use the
1841 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1842 off ancient servers have a habit of sticking around for a while...
1845 *) Modify compression code so it frees up structures without using the
1846 ex_data callbacks. This works around a problem where some applications
1847 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1848 restarting) then use compression (e.g. SSL with compression) later.
1849 This results in significant per-connection memory leaks and
1850 has caused some security issues including CVE-2008-1678 and
1854 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1855 change when encrypting or decrypting.
1858 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1859 connect and renegotiate with servers which do not support RI.
1860 Until RI is more widely deployed this option is enabled by default.
1863 *) Add "missing" ssl ctrls to clear options and mode.
1866 *) If client attempts to renegotiate and doesn't support RI respond with
1867 a no_renegotiation alert as required by RFC5746. Some renegotiating
1868 TLS clients will continue a connection gracefully when they receive
1869 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1870 waiting for a server hello which it will never receive. Now we treat a
1871 received no_renegotiation alert as a fatal error. This is because
1872 applications requesting a renegotiation might well expect it to succeed
1873 and would have no code in place to handle the server denying it so the
1874 only safe thing to do is to terminate the connection.
1877 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1878 peer supports secure renegotiation and 0 otherwise. Print out peer
1879 renegotiation support in s_client/s_server.
1882 *) Replace the highly broken and deprecated SPKAC certification method with
1883 the updated NID creation version. This should correctly handle UTF8.
1886 *) Implement RFC5746. Re-enable renegotiation but require the extension
1887 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1888 turns out to be a bad idea. It has been replaced by
1889 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1890 SSL_CTX_set_options(). This is really not recommended unless you
1891 know what you are doing.
1892 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1894 *) Fixes to stateless session resumption handling. Use initial_ctx when
1895 issuing and attempting to decrypt tickets in case it has changed during
1896 servername handling. Use a non-zero length session ID when attempting
1897 stateless session resumption: this makes it possible to determine if
1898 a resumption has occurred immediately after receiving server hello
1899 (several places in OpenSSL subtly assume this) instead of later in
1903 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1904 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1905 fixes for a few places where the return code is not checked
1907 [Julia Lawall <julia@diku.dk>]
1909 *) Add --strict-warnings option to Configure script to include devteam
1910 warnings in other configurations.
1913 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1914 makes it possible to install openssl libraries in locations which
1915 have names other than "lib", for example "/usr/lib64" which some
1917 [Steve Henson, based on patch from Jeremy Utley]
1919 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1920 X690 8.9.12 and can produce some misleading textual output of OIDs.
1921 [Steve Henson, reported by Dan Kaminsky]
1923 *) Delete MD2 from algorithm tables. This follows the recommendation in
1924 several standards that it is not used in new applications due to
1925 several cryptographic weaknesses. For binary compatibility reasons
1926 the MD2 API is still compiled in by default.
1929 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1933 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1934 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1936 [Guenter <lists@gknw.net>]
1938 *) Fix the server certificate chain building code to use X509_verify_cert(),
1939 it used to have an ad-hoc builder which was unable to cope with anything
1940 other than a simple chain.
1941 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1943 *) Don't check self signed certificate signatures in X509_verify_cert()
1944 by default (a flag can override this): it just wastes time without
1945 adding any security. As a useful side effect self signed root CAs
1946 with non-FIPS digests are now usable in FIPS mode.
1949 *) In dtls1_process_out_of_seq_message() the check if the current message
1950 is already buffered was missing. For every new message was memory
1951 allocated, allowing an attacker to perform an denial of service attack
1952 with sending out of seq handshake messages until there is no memory
1953 left. Additionally every future messege was buffered, even if the
1954 sequence number made no sense and would be part of another handshake.
1955 So only messages with sequence numbers less than 10 in advance will be
1956 buffered. (CVE-2009-1378)
1957 [Robin Seggelmann, discovered by Daniel Mentz]
1959 *) Records are buffered if they arrive with a future epoch to be
1960 processed after finishing the corresponding handshake. There is
1961 currently no limitation to this buffer allowing an attacker to perform
1962 a DOS attack with sending records with future epochs until there is no
1963 memory left. This patch adds the pqueue_size() function to detemine
1964 the size of a buffer and limits the record buffer to 100 entries.
1966 [Robin Seggelmann, discovered by Daniel Mentz]
1968 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1969 parent structure is freed. (CVE-2009-1379)
1972 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1973 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1976 [Ilya O. <vrghost@gmail.com>]
1978 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1980 *) Disable renegotiation completely - this fixes a severe security
1981 problem (CVE-2009-3555) at the cost of breaking all
1982 renegotiation. Renegotiation can be re-enabled by setting
1983 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1984 run-time. This is really not recommended unless you know what
1988 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1990 *) Don't set val to NULL when freeing up structures, it is freed up by
1991 underlying code. If sizeof(void *) > sizeof(long) this can result in
1992 zeroing past the valid field. (CVE-2009-0789)
1993 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1995 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1996 checked correctly. This would allow some invalid signed attributes to
1997 appear to verify correctly. (CVE-2009-0591)
1998 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2000 *) Reject UniversalString and BMPString types with invalid lengths. This
2001 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2002 a legal length. (CVE-2009-0590)
2005 *) Set S/MIME signing as the default purpose rather than setting it
2006 unconditionally. This allows applications to override it at the store
2010 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2011 to handle some structures.
2014 *) Improve efficiency of mem_gets: don't search whole buffer each time
2016 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2018 *) New -hex option for openssl rand.
2021 *) Print out UTF8String and NumericString when parsing ASN1.
2024 *) Support NumericString type for name components.
2027 *) Allow CC in the environment to override the automatically chosen
2028 compiler. Note that nothing is done to ensure flags work with the
2032 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2034 *) Properly check EVP_VerifyFinal() and similar return values
2036 [Ben Laurie, Bodo Moeller, Google Security Team]
2038 *) Enable TLS extensions by default.
2041 *) Allow the CHIL engine to be loaded, whether the application is
2042 multithreaded or not. (This does not release the developer from the
2043 obligation to set up the dynamic locking callbacks.)
2044 [Sander Temme <sander@temme.net>]
2046 *) Use correct exit code if there is an error in dgst command.
2047 [Steve Henson; problem pointed out by Roland Dirlewanger]
2049 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2050 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2053 *) Add experimental JPAKE support, including demo authentication in
2054 s_client and s_server.
2057 *) Set the comparison function in v3_addr_canonize().
2058 [Rob Austein <sra@hactrn.net>]
2060 *) Add support for XMPP STARTTLS in s_client.
2061 [Philip Paeps <philip@freebsd.org>]
2063 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2064 to ensure that even with this option, only ciphersuites in the
2065 server's preference list will be accepted. (Note that the option
2066 applies only when resuming a session, so the earlier behavior was
2067 just about the algorithm choice for symmetric cryptography.)
2070 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2072 *) Fix NULL pointer dereference if a DTLS server received
2073 ChangeCipherSpec as first record (CVE-2009-1386).
2076 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2077 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2080 *) The fix in 0.9.8c that supposedly got rid of unsafe
2081 double-checked locking was incomplete for RSA blinding,
2082 addressing just one layer of what turns out to have been
2083 doubly unsafe triple-checked locking.
2085 So now fix this for real by retiring the MONT_HELPER macro
2086 in crypto/rsa/rsa_eay.c.
2088 [Bodo Moeller; problem pointed out by Marius Schilder]
2090 *) Various precautionary measures:
2092 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2094 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2095 (NB: This would require knowledge of the secret session ticket key
2096 to exploit, in which case you'd be SOL either way.)
2098 - Change bn_nist.c so that it will properly handle input BIGNUMs
2099 outside the expected range.
2101 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2104 [Neel Mehta, Bodo Moeller]
2106 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2107 the load fails. Useful for distros.
2108 [Ben Laurie and the FreeBSD team]
2110 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2113 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2116 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2118 This work was sponsored by Logica.
2121 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2122 keystores. Support for SSL/TLS client authentication too.
2123 Not compiled unless enable-capieng specified to Configure.
2125 This work was sponsored by Logica.
2128 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2129 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2130 attribute creation routines such as certifcate requests and PKCS#12
2134 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2136 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2137 handshake which could lead to a cilent crash as found using the
2138 Codenomicon TLS test suite (CVE-2008-1672)
2139 [Steve Henson, Mark Cox]
2141 *) Fix double free in TLS server name extensions which could lead to
2142 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2145 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2147 Clear the error queue to ensure that error entries left from
2148 older function calls do not interfere with the correct operation.
2149 [Lutz Jaenicke, Erik de Castro Lopo]
2151 *) Remove root CA certificates of commercial CAs:
2153 The OpenSSL project does not recommend any specific CA and does not
2154 have any policy with respect to including or excluding any CA.
2155 Therefore it does not make any sense to ship an arbitrary selection
2156 of root CA certificates with the OpenSSL software.
2159 *) RSA OAEP patches to fix two separate invalid memory reads.
2160 The first one involves inputs when 'lzero' is greater than
2161 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2162 before the beginning of from). The second one involves inputs where
2163 the 'db' section contains nothing but zeroes (there is a one-byte
2164 invalid read after the end of 'db').
2165 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2167 *) Partial backport from 0.9.9-dev:
2169 Introduce bn_mul_mont (dedicated Montgomery multiplication
2170 procedure) as a candidate for BIGNUM assembler implementation.
2171 While 0.9.9-dev uses assembler for various architectures, only
2172 x86_64 is available by default here in the 0.9.8 branch, and
2173 32-bit x86 is available through a compile-time setting.
2175 To try the 32-bit x86 assembler implementation, use Configure
2176 option "enable-montasm" (which exists only for this backport).
2178 As "enable-montasm" for 32-bit x86 disclaims code stability
2179 anyway, in this constellation we activate additional code
2180 backported from 0.9.9-dev for further performance improvements,
2181 namely BN_from_montgomery_word. (To enable this otherwise,
2182 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2184 [Andy Polyakov (backport partially by Bodo Moeller)]
2186 *) Add TLS session ticket callback. This allows an application to set
2187 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2188 values. This is useful for key rollover for example where several key
2189 sets may exist with different names.
2192 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2193 This was broken until now in 0.9.8 releases, such that the only way
2194 a registered ENGINE could be used (assuming it initialises
2195 successfully on the host) was to explicitly set it as the default
2196 for the relevant algorithms. This is in contradiction with 0.9.7
2197 behaviour and the documentation. With this fix, when an ENGINE is
2198 registered into a given algorithm's table of implementations, the
2199 'uptodate' flag is reset so that auto-discovery will be used next
2200 time a new context for that algorithm attempts to select an
2202 [Ian Lister (tweaked by Geoff Thorpe)]
2204 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2205 implemention in the following ways:
2207 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2210 Lack of BER streaming support means one pass streaming processing is
2211 only supported if data is detached: setting the streaming flag is
2212 ignored for embedded content.
2214 CMS support is disabled by default and must be explicitly enabled
2215 with the enable-cms configuration option.
2218 *) Update the GMP engine glue to do direct copies between BIGNUM and
2219 mpz_t when openssl and GMP use the same limb size. Otherwise the
2220 existing "conversion via a text string export" trick is still used.
2221 [Paul Sheer <paulsheer@gmail.com>]
2223 *) Zlib compression BIO. This is a filter BIO which compressed and
2224 uncompresses any data passed through it.
2227 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2228 RFC3394 compatible AES key wrapping.
2231 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2232 sets string data without copying. X509_ALGOR_set0() and
2233 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2234 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2235 from an X509_ATTRIBUTE structure optionally checking it occurs only
2236 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2240 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2241 to get the expected BN_FLG_CONSTTIME behavior.
2242 [Bodo Moeller (Google)]
2246 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2247 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2248 - added some more tests to do_tests.pl
2249 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2250 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2251 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2252 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2253 - various changes to netware.pl to enable gcc-cross builds on Win32
2255 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2256 - various changes to fix missing prototype warnings
2257 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2258 - added AES, WHIRLPOOL and CPUID assembler code to build files
2259 - added missing AES assembler make rules to mk1mf.pl
2260 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2261 [Guenter Knauf <eflash@gmx.net>]
2263 *) Implement certificate status request TLS extension defined in RFC3546.
2264 A client can set the appropriate parameters and receive the encoded
2265 OCSP response via a callback. A server can query the supplied parameters
2266 and set the encoded OCSP response in the callback. Add simplified examples
2267 to s_client and s_server.
2270 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2272 *) Fix various bugs:
2273 + Binary incompatibility of ssl_ctx_st structure
2274 + DTLS interoperation with non-compliant servers
2275 + Don't call get_session_cb() without proposed session
2276 + Fix ia64 assembler code
2277 [Andy Polyakov, Steve Henson]
2279 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2281 *) DTLS Handshake overhaul. There were longstanding issues with
2282 OpenSSL DTLS implementation, which were making it impossible for
2283 RFC 4347 compliant client to communicate with OpenSSL server.
2284 Unfortunately just fixing these incompatibilities would "cut off"
2285 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2286 server keeps tolerating non RFC compliant syntax. The opposite is
2287 not true, 0.9.8f client can not communicate with earlier server.
2288 This update even addresses CVE-2007-4995.
2291 *) Changes to avoid need for function casts in OpenSSL: some compilers
2292 (gcc 4.2 and later) reject their use.
2293 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2296 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2297 RFC4507bis. The encrypted ticket format is an encrypted encoded
2298 SSL_SESSION structure, that way new session features are automatically
2301 If a client application caches session in an SSL_SESSION structure
2302 support is transparent because tickets are now stored in the encoded
2305 The SSL_CTX structure automatically generates keys for ticket
2306 protection in servers so again support should be possible
2307 with no application modification.
2309 If a client or server wishes to disable RFC4507 support then the option
2310 SSL_OP_NO_TICKET can be set.
2312 Add a TLS extension debugging callback to allow the contents of any client
2313 or server extensions to be examined.
2315 This work was sponsored by Google.
2318 *) Add initial support for TLS extensions, specifically for the server_name
2319 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2320 have new members for a host name. The SSL data structure has an
2321 additional member SSL_CTX *initial_ctx so that new sessions can be
2322 stored in that context to allow for session resumption, even after the
2323 SSL has been switched to a new SSL_CTX in reaction to a client's
2324 server_name extension.
2326 New functions (subject to change):
2328 SSL_get_servername()
2329 SSL_get_servername_type()
2332 New CTRL codes and macros (subject to change):
2334 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2335 - SSL_CTX_set_tlsext_servername_callback()
2336 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2337 - SSL_CTX_set_tlsext_servername_arg()
2338 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2340 openssl s_client has a new '-servername ...' option.
2342 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2343 '-key2 ...', '-servername_fatal' (subject to change). This allows
2344 testing the HostName extension for a specific single host name ('-cert'
2345 and '-key' remain fallbacks for handshakes without HostName
2346 negotiation). If the unrecogninzed_name alert has to be sent, this by
2347 default is a warning; it becomes fatal with the '-servername_fatal'
2350 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2352 *) Add AES and SSE2 assembly language support to VC++ build.
2355 *) Mitigate attack on final subtraction in Montgomery reduction.
2358 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2359 (which previously caused an internal error).
2362 *) Squeeze another 10% out of IGE mode when in != out.
2365 *) AES IGE mode speedup.
2366 [Dean Gaudet (Google)]
2368 *) Add the Korean symmetric 128-bit cipher SEED (see
2369 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2370 add SEED ciphersuites from RFC 4162:
2372 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2373 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2374 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2375 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2377 To minimize changes between patchlevels in the OpenSSL 0.9.8
2378 series, SEED remains excluded from compilation unless OpenSSL
2379 is configured with 'enable-seed'.
2380 [KISA, Bodo Moeller]
2382 *) Mitigate branch prediction attacks, which can be practical if a
2383 single processor is shared, allowing a spy process to extract
2384 information. For detailed background information, see
2385 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2386 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2387 and Necessary Software Countermeasures"). The core of the change
2388 are new versions BN_div_no_branch() and
2389 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2390 respectively, which are slower, but avoid the security-relevant
2391 conditional branches. These are automatically called by BN_div()
2392 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2393 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2394 remove a conditional branch.
2396 BN_FLG_CONSTTIME is the new name for the previous
2397 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2398 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2399 in the exponent causes BN_mod_exp_mont() to use the alternative
2400 implementation in BN_mod_exp_mont_consttime().) The old name
2401 remains as a deprecated alias.
2403 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2404 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2405 constant-time implementations for more than just exponentiation.
2406 Here too the old name is kept as a deprecated alias.
2408 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2409 the BN_BLINDING structure gets an independent copy of the
2410 modulus. This means that the previous "BIGNUM *m" argument to
2411 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2412 essentially becomes "const BIGNUM *m", although we can't actually
2413 change this in the header file before 0.9.9. It allows
2414 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2415 enable BN_FLG_CONSTTIME.
2417 [Matthew D Wood (Intel Corp)]
2419 *) In the SSL/TLS server implementation, be strict about session ID
2420 context matching (which matters if an application uses a single
2421 external cache for different purposes). Previously,
2422 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2423 set. This did ensure strict client verification, but meant that,
2424 with applications using a single external cache for quite
2425 different requirements, clients could circumvent ciphersuite
2426 restrictions for a given session ID context by starting a session
2427 in a different context.
2430 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2431 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2432 authentication-only ciphersuites.
2435 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2436 not complete and could lead to a possible single byte overflow
2437 (CVE-2007-5135) [Ben Laurie]
2439 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2441 *) Since AES128 and AES256 (and similarly Camellia128 and
2442 Camellia256) share a single mask bit in the logic of
2443 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2444 kludge to work properly if AES128 is available and AES256 isn't
2445 (or if Camellia128 is available and Camellia256 isn't).
2448 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2449 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2450 When a point or a seed is encoded in a BIT STRING, we need to
2451 prevent the removal of trailing zero bits to get the proper DER
2452 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2453 of a NamedBitList, for which trailing 0 bits need to be removed.)
2456 *) Have SSL/TLS server implementation tolerate "mismatched" record
2457 protocol version while receiving ClientHello even if the
2458 ClientHello is fragmented. (The server can't insist on the
2459 particular protocol version it has chosen before the ServerHello
2460 message has informed the client about his choice.)
2463 *) Add RFC 3779 support.
2464 [Rob Austein for ARIN, Ben Laurie]
2466 *) Load error codes if they are not already present instead of using a
2467 static variable. This allows them to be cleanly unloaded and reloaded.
2468 Improve header file function name parsing.
2471 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2472 or CAPABILITY handshake as required by RFCs.
2475 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2477 *) Introduce limits to prevent malicious keys being able to
2478 cause a denial of service. (CVE-2006-2940)
2479 [Steve Henson, Bodo Moeller]
2481 *) Fix ASN.1 parsing of certain invalid structures that can result
2482 in a denial of service. (CVE-2006-2937) [Steve Henson]
2484 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2485 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2487 *) Fix SSL client code which could crash if connecting to a
2488 malicious SSLv2 server. (CVE-2006-4343)
2489 [Tavis Ormandy and Will Drewry, Google Security Team]
2491 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2492 match only those. Before that, "AES256-SHA" would be interpreted
2493 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2494 the same strength classification in 0.9.7h) as we currently only
2495 have a single AES bit in the ciphersuite description bitmap.
2496 That change, however, also applied to ciphersuite strings such as
2497 "RC4-MD5" that intentionally matched multiple ciphersuites --
2498 namely, SSL 2.0 ciphersuites in addition to the more common ones
2499 from SSL 3.0/TLS 1.0.
2501 So we change the selection algorithm again: Naming an explicit
2502 ciphersuite selects this one ciphersuite, and any other similar
2503 ciphersuite (same bitmap) from *other* protocol versions.
2504 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2505 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2507 Since SSL 2.0 does not have any ciphersuites for which the
2508 128/256 bit distinction would be relevant, this works for now.
2509 The proper fix will be to use different bits for AES128 and
2510 AES256, which would have avoided the problems from the beginning;
2511 however, bits are scarce, so we can only do this in a new release
2512 (not just a patchlevel) when we can change the SSL_CIPHER
2513 definition to split the single 'unsigned long mask' bitmap into
2514 multiple values to extend the available space.
2518 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2520 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2521 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2523 *) Add AES IGE and biIGE modes.
2526 *) Change the Unix randomness entropy gathering to use poll() when
2527 possible instead of select(), since the latter has some
2528 undesirable limitations.
2529 [Darryl Miles via Richard Levitte and Bodo Moeller]
2531 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2532 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2533 cannot be implicitly activated as part of, e.g., the "AES" alias.
2534 However, please upgrade to OpenSSL 0.9.9[-dev] for
2535 non-experimental use of the ECC ciphersuites to get TLS extension
2536 support, which is required for curve and point format negotiation
2537 to avoid potential handshake problems.
2540 *) Disable rogue ciphersuites:
2542 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2543 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2544 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2546 The latter two were purportedly from
2547 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2550 Also deactivate the remaining ciphersuites from
2551 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2552 unofficial, and the ID has long expired.
2555 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2556 dual-core machines) and other potential thread-safety issues.
2559 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2560 versions), which is now available for royalty-free use
2561 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2562 Also, add Camellia TLS ciphersuites from RFC 4132.
2564 To minimize changes between patchlevels in the OpenSSL 0.9.8
2565 series, Camellia remains excluded from compilation unless OpenSSL
2566 is configured with 'enable-camellia'.
2569 *) Disable the padding bug check when compression is in use. The padding
2570 bug check assumes the first packet is of even length, this is not
2571 necessarily true if compresssion is enabled and can result in false
2572 positives causing handshake failure. The actual bug test is ancient
2573 code so it is hoped that implementations will either have fixed it by
2574 now or any which still have the bug do not support compression.
2577 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2579 *) When applying a cipher rule check to see if string match is an explicit
2580 cipher suite and only match that one cipher suite if it is.
2583 *) Link in manifests for VC++ if needed.
2584 [Austin Ziegler <halostatue@gmail.com>]
2586 *) Update support for ECC-based TLS ciphersuites according to
2587 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2588 TLS extensions, which are supported starting with the 0.9.9
2589 branch, not in the OpenSSL 0.9.8 branch).
2592 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2593 opaque EVP_CIPHER_CTX handling.
2596 *) Fixes and enhancements to zlib compression code. We now only use
2597 "zlib1.dll" and use the default __cdecl calling convention on Win32
2598 to conform with the standards mentioned here:
2599 http://www.zlib.net/DLL_FAQ.txt
2600 Static zlib linking now works on Windows and the new --with-zlib-include
2601 --with-zlib-lib options to Configure can be used to supply the location
2602 of the headers and library. Gracefully handle case where zlib library
2606 *) Several fixes and enhancements to the OID generation code. The old code
2607 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2608 handle numbers larger than ULONG_MAX, truncated printing and had a
2609 non standard OBJ_obj2txt() behaviour.
2612 *) Add support for building of engines under engine/ as shared libraries
2613 under VC++ build system.
2616 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2617 Hopefully, we will not see any false combination of paths any more.
2620 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2622 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2623 (part of SSL_OP_ALL). This option used to disable the
2624 countermeasure against man-in-the-middle protocol-version
2625 rollback in the SSL 2.0 server implementation, which is a bad
2626 idea. (CVE-2005-2969)
2628 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2629 for Information Security, National Institute of Advanced Industrial
2630 Science and Technology [AIST], Japan)]
2632 *) Add two function to clear and return the verify parameter flags.
2635 *) Keep cipherlists sorted in the source instead of sorting them at
2636 runtime, thus removing the need for a lock.
2639 *) Avoid some small subgroup attacks in Diffie-Hellman.
2640 [Nick Mathewson and Ben Laurie]
2642 *) Add functions for well-known primes.
2645 *) Extended Windows CE support.
2646 [Satoshi Nakamura and Andy Polyakov]
2648 *) Initialize SSL_METHOD structures at compile time instead of during
2649 runtime, thus removing the need for a lock.
2652 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2653 attempting to decrypt each encrypted key in turn. Add support to
2657 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2659 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2662 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2665 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2666 key into the same file any more.
2669 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2672 *) Add -utf8 command line and config file option to 'ca'.
2673 [Stefan <stf@udoma.org]
2675 *) Removed the macro des_crypt(), as it seems to conflict with some
2676 libraries. Use DES_crypt().
2679 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2680 involves renaming the source and generated shared-libs for
2681 both. The engines will accept the corrected or legacy ids
2682 ('ncipher' and '4758_cca' respectively) when binding. NB,
2683 this only applies when building 'shared'.
2684 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2686 *) Add attribute functions to EVP_PKEY structure. Modify
2687 PKCS12_create() to recognize a CSP name attribute and
2688 use it. Make -CSP option work again in pkcs12 utility.
2691 *) Add new functionality to the bn blinding code:
2692 - automatic re-creation of the BN_BLINDING parameters after
2693 a fixed number of uses (currently 32)
2694 - add new function for parameter creation
2695 - introduce flags to control the update behaviour of the
2696 BN_BLINDING parameters
2697 - hide BN_BLINDING structure
2698 Add a second BN_BLINDING slot to the RSA structure to improve
2699 performance when a single RSA object is shared among several
2703 *) Add support for DTLS.
2704 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2706 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2707 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2710 *) Remove buggy and incompletet DH cert support from
2711 ssl/ssl_rsa.c and ssl/s3_both.c
2714 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2715 the apps/openssl applications.
2718 *) Compile clean with "-Wall -Wmissing-prototypes
2719 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2720 DEBUG_SAFESTACK must also be set.
2723 *) Change ./Configure so that certain algorithms can be disabled by default.
2724 The new counterpiece to "no-xxx" is "enable-xxx".
2726 The patented RC5 and MDC2 algorithms will now be disabled unless
2727 "enable-rc5" and "enable-mdc2", respectively, are specified.
2729 (IDEA remains enabled despite being patented. This is because IDEA
2730 is frequently required for interoperability, and there is no license
2731 fee for non-commercial use. As before, "no-idea" can be used to
2732 avoid this algorithm.)
2736 *) Add processing of proxy certificates (see RFC 3820). This work was
2737 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2738 EGEE (Enabling Grids for E-science in Europe).
2741 *) RC4 performance overhaul on modern architectures/implementations, such
2742 as Intel P4, IA-64 and AMD64.
2745 *) New utility extract-section.pl. This can be used specify an alternative
2746 section number in a pod file instead of having to treat each file as
2747 a separate case in Makefile. This can be done by adding two lines to the
2750 =for comment openssl_section:XXX
2752 The blank line is mandatory.
2756 *) New arguments -certform, -keyform and -pass for s_client and s_server
2757 to allow alternative format key and certificate files and passphrase
2761 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2762 update associated structures and add various utility functions.
2764 Add new policy related verify parameters, include policy checking in
2765 standard verify code. Enhance 'smime' application with extra parameters
2766 to support policy checking and print out.
2769 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2770 Nehemiah processors. These extensions support AES encryption in hardware
2771 as well as RNG (though RNG support is currently disabled).
2772 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2774 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2777 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2778 [Andy Polyakov and a number of other people]
2780 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2781 implementation contributed by IBM.
2782 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2784 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2785 exponent rather than 'unsigned long'. There is a corresponding change to
2786 the new 'rsa_keygen' element of the RSA_METHOD structure.
2787 [Jelte Jansen, Geoff Thorpe]
2789 *) Functionality for creating the initial serial number file is now
2790 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2792 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2793 number file to 1, which is bound to cause problems. To avoid
2794 the problems while respecting compatibility between different 0.9.7
2795 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2796 CA.pl for serial number initialization. With the new release 0.9.8,
2797 we can fix the problem directly in the 'ca' utility.)
2800 *) Reduced header interdepencies by declaring more opaque objects in
2801 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2802 give fewer recursive includes, which could break lazy source code - so
2803 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2804 developers should define this symbol when building and using openssl to
2805 ensure they track the recommended behaviour, interfaces, [etc], but
2806 backwards-compatible behaviour prevails when this isn't defined.
2809 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2812 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2813 This will generate a random key of the appropriate length based on the
2814 cipher context. The EVP_CIPHER can provide its own random key generation
2815 routine to support keys of a specific form. This is used in the des and
2816 3des routines to generate a key of the correct parity. Update S/MIME
2817 code to use new functions and hence generate correct parity DES keys.
2818 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2819 valid (weak or incorrect parity).
2822 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2823 as looking them up. This is useful when the verified structure may contain
2824 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2825 present unless the new PKCS7_NO_CRL flag is asserted.
2828 *) Extend ASN1 oid configuration module. It now additionally accepts the
2831 shortName = some long name, 1.2.3.4
2834 *) Reimplemented the BN_CTX implementation. There is now no more static
2835 limitation on the number of variables it can handle nor the depth of the
2836 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2837 information can now expand as required, and rather than having a single
2838 static array of bignums, BN_CTX now uses a linked-list of such arrays
2839 allowing it to expand on demand whilst maintaining the usefulness of
2840 BN_CTX's "bundling".
2843 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2844 to allow all RSA operations to function using a single BN_CTX.
2847 *) Preliminary support for certificate policy evaluation and checking. This
2848 is initially intended to pass the tests outlined in "Conformance Testing
2849 of Relying Party Client Certificate Path Processing Logic" v1.07.
2852 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2853 remained unused and not that useful. A variety of other little bignum
2854 tweaks and fixes have also been made continuing on from the audit (see
2858 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2859 associated ASN1, EVP and SSL functions and old ASN1 macros.
2862 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2863 and this should never fail. So the return value from the use of
2864 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2865 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2868 *) BN_CTX_get() should return zero-valued bignums, providing the same
2869 initialised value as BN_new().
2870 [Geoff Thorpe, suggested by Ulf Möller]
2872 *) Support for inhibitAnyPolicy certificate extension.
2875 *) An audit of the BIGNUM code is underway, for which debugging code is
2876 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2877 is considered valid when processing BIGNUMs, and causes execution to
2878 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2879 further steps are taken to deliberately pollute unused data in BIGNUM
2880 structures to try and expose faulty code further on. For now, openssl will
2881 (in its default mode of operation) continue to tolerate the inconsistent
2882 forms that it has tolerated in the past, but authors and packagers should
2883 consider trying openssl and their own applications when compiled with
2884 these debugging symbols defined. It will help highlight potential bugs in
2885 their own code, and will improve the test coverage for OpenSSL itself. At
2886 some point, these tighter rules will become openssl's default to improve
2887 maintainability, though the assert()s and other overheads will remain only
2888 in debugging configurations. See bn.h for more details.
2889 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2891 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2892 that can only be obtained through BN_CTX_new() (which implicitly
2893 initialises it). The presence of this function only made it possible
2894 to overwrite an existing structure (and cause memory leaks).
2897 *) Because of the callback-based approach for implementing LHASH as a
2898 template type, lh_insert() adds opaque objects to hash-tables and
2899 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2900 to clean up those corresponding objects before destroying the hash table
2901 (and losing the object pointers). So some over-zealous constifications in
2902 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2903 objects as "const" and the lh_doall[_arg] callback wrappers are not
2904 prototyped to have "const" restrictions on the object pointers they are
2905 given (and so aren't required to cast them away any more).
2908 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2909 (speed) prefers to use its own implementation. The two implementations
2910 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2911 its object type properly exposed (MS_TM) instead of casting to/from "char
2912 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2913 aren't necessarily the greatest nomenclatures - but this is what was used
2914 internally to the implementation so I've used that for now.
2917 *) Ensure that deprecated functions do not get compiled when
2918 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2919 the self-tests were still using deprecated key-generation functions so
2920 these have been updated also.
2923 *) Reorganise PKCS#7 code to separate the digest location functionality
2924 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2925 New function PKCS7_set_digest() to set the digest type for PKCS#7
2926 digestedData type. Add additional code to correctly generate the
2927 digestedData type and add support for this type in PKCS7 initialization
2931 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2932 structure of type "other".
2935 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2936 sure the loop does correctly stop and breaking ("division by zero")
2937 modulus operations are not performed. The (pre-generated) prime
2938 table crypto/bn/bn_prime.h was already correct, but it could not be
2939 re-generated on some platforms because of the "division by zero"
2940 situation in the script.
2941 [Ralf S. Engelschall]
2943 *) Update support for ECC-based TLS ciphersuites according to
2944 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2945 SHA-1 now is only used for "small" curves (where the
2946 representation of a field element takes up to 24 bytes); for
2947 larger curves, the field element resulting from ECDH is directly
2948 used as premaster secret.
2949 [Douglas Stebila (Sun Microsystems Laboratories)]
2951 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2952 curve secp160r1 to the tests.
2953 [Douglas Stebila (Sun Microsystems Laboratories)]
2955 *) Add the possibility to load symbols globally with DSO.
2956 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2958 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2959 control of the error stack.
2962 *) Add support for STORE in ENGINE.
2965 *) Add the STORE type. The intention is to provide a common interface
2966 to certificate and key stores, be they simple file-based stores, or
2967 HSM-type store, or LDAP stores, or...
2968 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2971 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2972 pass a list of arguments to any function as well as provide a way
2973 for a function to pass data back to the caller.
2976 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2977 works like BUF_strdup() but can be used to duplicate a portion of
2978 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2982 *) Add the function sk_find_ex() which works like sk_find(), but will
2983 return an index to an element even if an exact match couldn't be
2984 found. The index is guaranteed to point at the element where the
2985 searched-for key would be inserted to preserve sorting order.
2988 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2989 takes an extra flags argument for optional functionality. Currently,
2990 the following flags are defined:
2992 OBJ_BSEARCH_VALUE_ON_NOMATCH
2993 This one gets OBJ_bsearch_ex() to return a pointer to the first
2994 element where the comparing function returns a negative or zero
2997 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2998 This one gets OBJ_bsearch_ex() to return a pointer to the first
2999 element where the comparing function returns zero. This is useful
3000 if there are more than one element where the comparing function
3004 *) Make it possible to create self-signed certificates with 'openssl ca'
3005 in such a way that the self-signed certificate becomes part of the
3006 CA database and uses the same mechanisms for serial number generation
3007 as all other certificate signing. The new flag '-selfsign' enables
3008 this functionality. Adapt CA.sh and CA.pl.in.
3011 *) Add functionality to check the public key of a certificate request
3012 against a given private. This is useful to check that a certificate
3013 request can be signed by that key (self-signing).
3016 *) Make it possible to have multiple active certificates with the same
3017 subject in the CA index file. This is done only if the keyword
3018 'unique_subject' is set to 'no' in the main CA section (default
3019 if 'CA_default') of the configuration file. The value is saved
3020 with the database itself in a separate index attribute file,
3021 named like the index file with '.attr' appended to the name.
3024 *) Generate muti valued AVAs using '+' notation in config files for
3028 *) Support for nameConstraints certificate extension.
3031 *) Support for policyConstraints certificate extension.
3034 *) Support for policyMappings certificate extension.
3037 *) Make sure the default DSA_METHOD implementation only uses its
3038 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3039 and change its own handlers to be NULL so as to remove unnecessary
3040 indirection. This lets alternative implementations fallback to the
3041 default implementation more easily.
3044 *) Support for directoryName in GeneralName related extensions
3048 *) Make it possible to link applications using Makefile.shared.
3049 Make that possible even when linking against static libraries!
3052 *) Support for single pass processing for S/MIME signing. This now
3053 means that S/MIME signing can be done from a pipe, in addition
3054 cleartext signing (multipart/signed type) is effectively streaming
3055 and the signed data does not need to be all held in memory.
3057 This is done with a new flag PKCS7_STREAM. When this flag is set
3058 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3059 is done after the data is output (and digests calculated) in
3060 SMIME_write_PKCS7().
3063 *) Add full support for -rpath/-R, both in shared libraries and
3064 applications, at least on the platforms where it's known how
3068 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3069 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3070 will now compute a table of multiples of the generator that
3071 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3072 faster (notably in the case of a single point multiplication,
3073 scalar * generator).
3074 [Nils Larsch, Bodo Moeller]
3076 *) IPv6 support for certificate extensions. The various extensions
3077 which use the IP:a.b.c.d can now take IPv6 addresses using the
3078 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3082 *) Added an ENGINE that implements RSA by performing private key
3083 exponentiations with the GMP library. The conversions to and from
3084 GMP's mpz_t format aren't optimised nor are any montgomery forms
3085 cached, and on x86 it appears OpenSSL's own performance has caught up.
3086 However there are likely to be other architectures where GMP could
3087 provide a boost. This ENGINE is not built in by default, but it can be
3088 specified at Configure time and should be accompanied by the necessary
3089 linker additions, eg;
3090 ./config -DOPENSSL_USE_GMP -lgmp
3093 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3094 testing availability of engines with "-t" - the old behaviour is
3095 produced by increasing the feature's verbosity with "-tt".
3098 *) ECDSA routines: under certain error conditions uninitialized BN objects
3099 could be freed. Solution: make sure initialization is performed early
3100 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3104 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3105 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3106 software implementations. For DSA and DH, parameter generation can
3107 also be overriden by providing the appropriate method callbacks.
3110 *) Change the "progress" mechanism used in key-generation and
3111 primality testing to functions that take a new BN_GENCB pointer in
3112 place of callback/argument pairs. The new API functions have "_ex"
3113 postfixes and the older functions are reimplemented as wrappers for
3114 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3115 declarations of the old functions to help (graceful) attempts to
3116 migrate to the new functions. Also, the new key-generation API
3117 functions operate on a caller-supplied key-structure and return
3118 success/failure rather than returning a key or NULL - this is to
3119 help make "keygen" another member function of RSA_METHOD etc.
3121 Example for using the new callback interface:
3123 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3127 BN_GENCB_set(&my_cb, my_callback, my_arg);
3129 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3130 /* For the meaning of a, b in calls to my_callback(), see the
3131 * documentation of the function that calls the callback.
3132 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3133 * my_callback should return 1 if it wants BN_is_prime_ex()
3134 * to continue, or 0 to stop.
3139 *) Change the ZLIB compression method to be stateful, and make it
3140 available to TLS with the number defined in
3141 draft-ietf-tls-compression-04.txt.
3144 *) Add the ASN.1 structures and functions for CertificatePair, which
3145 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3147 CertificatePair ::= SEQUENCE {
3148 forward [0] Certificate OPTIONAL,
3149 reverse [1] Certificate OPTIONAL,
3150 -- at least one of the pair shall be present -- }
3152 Also implement the PEM functions to read and write certificate
3153 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3155 This needed to be defined, mostly for the sake of the LDAP
3156 attribute crossCertificatePair, but may prove useful elsewhere as
3160 *) Make it possible to inhibit symlinking of shared libraries in
3161 Makefile.shared, for Cygwin's sake.
3164 *) Extend the BIGNUM API by creating a function
3165 void BN_set_negative(BIGNUM *a, int neg);
3166 and a macro that behave like
3167 int BN_is_negative(const BIGNUM *a);
3169 to avoid the need to access 'a->neg' directly in applications.
3172 *) Implement fast modular reduction for pseudo-Mersenne primes
3173 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3174 EC_GROUP_new_curve_GFp() will now automatically use this
3176 [Nils Larsch <nla@trustcenter.de>]
3178 *) Add new lock type (CRYPTO_LOCK_BN).
3181 *) Change the ENGINE framework to automatically load engines
3182 dynamically from specific directories unless they could be
3183 found to already be built in or loaded. Move all the
3184 current engines except for the cryptodev one to a new
3186 The engines in engines/ are built as shared libraries if
3187 the "shared" options was given to ./Configure or ./config.
3188 Otherwise, they are inserted in libcrypto.a.
3189 /usr/local/ssl/engines is the default directory for dynamic
3190 engines, but that can be overriden at configure time through
3191 the usual use of --prefix and/or --openssldir, and at run
3192 time with the environment variable OPENSSL_ENGINES.
3193 [Geoff Thorpe and Richard Levitte]
3195 *) Add Makefile.shared, a helper makefile to build shared
3196 libraries. Addapt Makefile.org.
3199 *) Add version info to Win32 DLLs.
3200 [Peter 'Luna' Runestig" <peter@runestig.com>]
3202 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3203 can be added using this API to created arbitrary PKCS#12
3204 files while avoiding the low level API.
3206 New options to PKCS12_create(), key or cert can be NULL and
3207 will then be omitted from the output file. The encryption
3208 algorithm NIDs can be set to -1 for no encryption, the mac
3209 iteration count can be set to 0 to omit the mac.
3211 Enhance pkcs12 utility by making the -nokeys and -nocerts
3212 options work when creating a PKCS#12 file. New option -nomac
3213 to omit the mac, NONE can be set for an encryption algorithm.
3214 New code is modified to use the enhanced PKCS12_create()
3215 instead of the low level API.
3218 *) Extend ASN1 encoder to support indefinite length constructed
3219 encoding. This can output sequences tags and octet strings in
3220 this form. Modify pk7_asn1.c to support indefinite length
3221 encoding. This is experimental and needs additional code to
3222 be useful, such as an ASN1 bio and some enhanced streaming
3225 Extend template encode functionality so that tagging is passed
3226 down to the template encoder.
3229 *) Let 'openssl req' fail if an argument to '-newkey' is not
3230 recognized instead of using RSA as a default.
3233 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3234 As these are not official, they are not included in "ALL";
3235 the "ECCdraft" ciphersuite group alias can be used to select them.
3236 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3238 *) Add ECDH engine support.
3239 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3241 *) Add ECDH in new directory crypto/ecdh/.
3242 [Douglas Stebila (Sun Microsystems Laboratories)]
3244 *) Let BN_rand_range() abort with an error after 100 iterations
3245 without success (which indicates a broken PRNG).
3248 *) Change BN_mod_sqrt() so that it verifies that the input value
3249 is really the square of the return value. (Previously,
3250 BN_mod_sqrt would show GIGO behaviour.)
3253 *) Add named elliptic curves over binary fields from X9.62, SECG,
3254 and WAP/WTLS; add OIDs that were still missing.
3256 [Sheueling Chang Shantz and Douglas Stebila
3257 (Sun Microsystems Laboratories)]
3259 *) Extend the EC library for elliptic curves over binary fields
3260 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3263 EC_GF2m_simple_method
3267 EC_GROUP_new_curve_GF2m
3268 EC_GROUP_set_curve_GF2m
3269 EC_GROUP_get_curve_GF2m
3270 EC_POINT_set_affine_coordinates_GF2m
3271 EC_POINT_get_affine_coordinates_GF2m
3272 EC_POINT_set_compressed_coordinates_GF2m
3274 Point compression for binary fields is disabled by default for
3275 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3278 As binary polynomials are represented as BIGNUMs, various members
3279 of the EC_GROUP and EC_POINT data structures can be shared
3280 between the implementations for prime fields and binary fields;
3281 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3282 are essentially identical to their ..._GFp counterparts.
3283 (For simplicity, the '..._GFp' prefix has been dropped from
3284 various internal method names.)
3286 An internal 'field_div' method (similar to 'field_mul' and
3287 'field_sqr') has been added; this is used only for binary fields.
3289 [Sheueling Chang Shantz and Douglas Stebila
3290 (Sun Microsystems Laboratories)]
3292 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3293 through methods ('mul', 'precompute_mult').
3295 The generic implementations (now internally called 'ec_wNAF_mul'
3296 and 'ec_wNAF_precomputed_mult') remain the default if these
3297 methods are undefined.
3299 [Sheueling Chang Shantz and Douglas Stebila
3300 (Sun Microsystems Laboratories)]
3302 *) New function EC_GROUP_get_degree, which is defined through
3303 EC_METHOD. For curves over prime fields, this returns the bit
3304 length of the modulus.
3306 [Sheueling Chang Shantz and Douglas Stebila
3307 (Sun Microsystems Laboratories)]
3309 *) New functions EC_GROUP_dup, EC_POINT_dup.
3310 (These simply call ..._new and ..._copy).
3312 [Sheueling Chang Shantz and Douglas Stebila
3313 (Sun Microsystems Laboratories)]
3315 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3316 Polynomials are represented as BIGNUMs (where the sign bit is not
3317 used) in the following functions [macros]:
3320 BN_GF2m_sub [= BN_GF2m_add]
3321 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3322 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3323 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3325 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3326 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3327 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3328 BN_GF2m_cmp [= BN_ucmp]
3330 (Note that only the 'mod' functions are actually for fields GF(2^m).
3331 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3333 For some functions, an the irreducible polynomial defining a
3334 field can be given as an 'unsigned int[]' with strictly
3335 decreasing elements giving the indices of those bits that are set;
3336 i.e., p[] represents the polynomial
3337 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3339 p[0] > p[1] > ... > p[k] = 0.
3340 This applies to the following functions:
3345 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3346 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3348 BN_GF2m_mod_sqrt_arr
3349 BN_GF2m_mod_solve_quad_arr
3353 Conversion can be performed by the following functions:
3358 bntest.c has additional tests for binary polynomial arithmetic.
3360 Two implementations for BN_GF2m_mod_div() are available.
3361 The default algorithm simply uses BN_GF2m_mod_inv() and
3362 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3363 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3364 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3366 [Sheueling Chang Shantz and Douglas Stebila
3367 (Sun Microsystems Laboratories)]
3369 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3370 functionality is disabled at compile-time.
3371 [Douglas Stebila <douglas.stebila@sun.com>]
3373 *) Change default behaviour of 'openssl asn1parse' so that more
3374 information is visible when viewing, e.g., a certificate:
3376 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3377 mode the content of non-printable OCTET STRINGs is output in a
3378 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3379 avoid the appearance of a printable string.
3380 [Nils Larsch <nla@trustcenter.de>]
3382 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3384 EC_GROUP_set_asn1_flag()
3385 EC_GROUP_get_asn1_flag()
3386 EC_GROUP_set_point_conversion_form()
3387 EC_GROUP_get_point_conversion_form()
3388 These control ASN1 encoding details:
3389 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3390 has been set to OPENSSL_EC_NAMED_CURVE.
3391 - Points are encoded in uncompressed form by default; options for
3392 asn1_for are as for point2oct, namely
3393 POINT_CONVERSION_COMPRESSED
3394 POINT_CONVERSION_UNCOMPRESSED
3395 POINT_CONVERSION_HYBRID
3397 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3400 EC_GROUP_get0_seed()
3401 EC_GROUP_get_seed_len()
3402 This is used only for ASN1 purposes (so far).
3403 [Nils Larsch <nla@trustcenter.de>]
3405 *) Add 'field_type' member to EC_METHOD, which holds the NID
3406 of the appropriate field type OID. The new function
3407 EC_METHOD_get_field_type() returns this value.
3408 [Nils Larsch <nla@trustcenter.de>]
3413 EC_POINT_point2hex()
3414 EC_POINT_hex2point()
3415 providing useful interfaces to EC_POINT_point2oct() and
3416 EC_POINT_oct2point().
3417 [Nils Larsch <nla@trustcenter.de>]
3419 *) Change internals of the EC library so that the functions
3420 EC_GROUP_set_generator()
3421 EC_GROUP_get_generator()
3422 EC_GROUP_get_order()
3423 EC_GROUP_get_cofactor()
3424 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3425 to methods, which would lead to unnecessary code duplication when
3426 adding different types of curves.
3427 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3429 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3430 arithmetic, and such that modified wNAFs are generated
3431 (which avoid length expansion in many cases).
3434 *) Add a function EC_GROUP_check_discriminant() (defined via
3435 EC_METHOD) that verifies that the curve discriminant is non-zero.
3437 Add a function EC_GROUP_check() that makes some sanity tests
3438 on a EC_GROUP, its generator and order. This includes
3439 EC_GROUP_check_discriminant().
3440 [Nils Larsch <nla@trustcenter.de>]
3442 *) Add ECDSA in new directory crypto/ecdsa/.
3444 Add applications 'openssl ecparam' and 'openssl ecdsa'
3445 (these are based on 'openssl dsaparam' and 'openssl dsa').
3447 ECDSA support is also included in various other files across the
3448 library. Most notably,
3449 - 'openssl req' now has a '-newkey ecdsa:file' option;
3450 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3451 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3452 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3453 them suitable for ECDSA where domain parameters must be
3454 extracted before the specific public key;
3455 - ECDSA engine support has been added.
3456 [Nils Larsch <nla@trustcenter.de>]
3458 *) Include some named elliptic curves, and add OIDs from X9.62,
3459 SECG, and WAP/WTLS. Each curve can be obtained from the new
3461 EC_GROUP_new_by_curve_name(),
3462 and the list of available named curves can be obtained with
3463 EC_get_builtin_curves().
3464 Also add a 'curve_name' member to EC_GROUP objects, which can be
3466 EC_GROUP_set_curve_name()
3467 EC_GROUP_get_curve_name()
3468 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3470 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3471 was actually never needed) and in BN_mul(). The removal in BN_mul()
3472 required a small change in bn_mul_part_recursive() and the addition
3473 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3474 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3475 bn_sub_words() and bn_add_words() except they take arrays with
3479 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3481 *) Cleanse PEM buffers before freeing them since they may contain
3483 [Benjamin Bennett <ben@psc.edu>]
3485 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3486 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3487 authentication-only ciphersuites.
3490 *) Since AES128 and AES256 share a single mask bit in the logic of
3491 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3492 kludge to work properly if AES128 is available and AES256 isn't.
3495 *) Expand security boundary to match 1.1.1 module.
3498 *) Remove redundant features: hash file source, editing of test vectors
3499 modify fipsld to use external fips_premain.c signature.
3502 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3503 run algorithm test programs.
3506 *) Make algorithm test programs more tolerant of whitespace.
3509 *) Have SSL/TLS server implementation tolerate "mismatched" record
3510 protocol version while receiving ClientHello even if the
3511 ClientHello is fragmented. (The server can't insist on the
3512 particular protocol version it has chosen before the ServerHello
3513 message has informed the client about his choice.)
3516 *) Load error codes if they are not already present instead of using a
3517 static variable. This allows them to be cleanly unloaded and reloaded.
3520 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3522 *) Introduce limits to prevent malicious keys being able to
3523 cause a denial of service. (CVE-2006-2940)
3524 [Steve Henson, Bodo Moeller]
3526 *) Fix ASN.1 parsing of certain invalid structures that can result
3527 in a denial of service. (CVE-2006-2937) [Steve Henson]
3529 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3530 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3532 *) Fix SSL client code which could crash if connecting to a
3533 malicious SSLv2 server. (CVE-2006-4343)
3534 [Tavis Ormandy and Will Drewry, Google Security Team]
3536 *) Change ciphersuite string processing so that an explicit
3537 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3538 will no longer include "AES128-SHA"), and any other similar
3539 ciphersuite (same bitmap) from *other* protocol versions (so that
3540 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3541 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3542 changes from 0.9.8b and 0.9.8d.
3545 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3547 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3548 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3550 *) Change the Unix randomness entropy gathering to use poll() when
3551 possible instead of select(), since the latter has some
3552 undesirable limitations.
3553 [Darryl Miles via Richard Levitte and Bodo Moeller]
3555 *) Disable rogue ciphersuites:
3557 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3558 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3559 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3561 The latter two were purportedly from
3562 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3565 Also deactive the remaining ciphersuites from
3566 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3567 unofficial, and the ID has long expired.
3570 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3571 dual-core machines) and other potential thread-safety issues.
3574 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3576 *) Adapt fipsld and the build system to link against the validated FIPS
3577 module in FIPS mode.
3580 *) Fixes for VC++ 2005 build under Windows.
3583 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3584 from a Windows bash shell such as MSYS. It is autodetected from the
3585 "config" script when run from a VC++ environment. Modify standard VC++
3586 build to use fipscanister.o from the GNU make build.
3589 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3591 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3592 The value now differs depending on if you build for FIPS or not.
3593 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3594 safely run with a non-FIPSed libcrypto, as it may crash because of
3595 the difference induced by this change.
3598 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3600 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3601 (part of SSL_OP_ALL). This option used to disable the
3602 countermeasure against man-in-the-middle protocol-version
3603 rollback in the SSL 2.0 server implementation, which is a bad
3604 idea. (CVE-2005-2969)
3606 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3607 for Information Security, National Institute of Advanced Industrial
3608 Science and Technology [AIST], Japan)]
3610 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3611 mainly for FIPS compliance and not fully integrated at this stage.
3614 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3615 the exponentiation using a fixed-length exponent. (Otherwise,
3616 the information leaked through timing could expose the secret key
3617 after many signatures; cf. Bleichenbacher's attack on DSA with
3621 *) Make a new fixed-window mod_exp implementation the default for
3622 RSA, DSA, and DH private-key operations so that the sequence of
3623 squares and multiplies and the memory access pattern are
3624 independent of the particular secret key. This will mitigate
3625 cache-timing and potential related attacks.
3627 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3628 and this is automatically used by BN_mod_exp_mont() if the new flag
3629 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3630 will use this BN flag for private exponents unless the flag
3631 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3632 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3634 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3636 *) Change the client implementation for SSLv23_method() and
3637 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3638 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3639 (Previously, the SSL 2.0 backwards compatible Client Hello
3640 message format would be used even with SSL_OP_NO_SSLv2.)
3643 *) Add support for smime-type MIME parameter in S/MIME messages which some
3647 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3648 a threadsafe manner. Modify rsa code to use new function and add calls
3649 to dsa and dh code (which had race conditions before).
3652 *) Include the fixed error library code in the C error file definitions
3653 instead of fixing them up at runtime. This keeps the error code
3654 structures constant.
3657 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3659 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3662 *) Fixes for newer kerberos headers. NB: the casts are needed because
3663 the 'length' field is signed on one version and unsigned on another
3664 with no (?) obvious way to tell the difference, without these VC++
3665 complains. Also the "definition" of FAR (blank) is no longer included
3666 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3667 some needed definitions.
3670 *) Undo Cygwin change.
3673 *) Added support for proxy certificates according to RFC 3820.
3674 Because they may be a security thread to unaware applications,
3675 they must be explicitely allowed in run-time. See
3676 docs/HOWTO/proxy_certificates.txt for further information.
3679 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3681 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3682 server and client random values. Previously
3683 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3684 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3686 This change has negligible security impact because:
3688 1. Server and client random values still have 24 bytes of pseudo random
3691 2. Server and client random values are sent in the clear in the initial
3694 3. The master secret is derived using the premaster secret (48 bytes in
3695 size for static RSA ciphersuites) as well as client server and random
3698 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3701 [Stephen Henson, reported by UK NISCC]
3703 *) Use Windows randomness collection on Cygwin.
3706 *) Fix hang in EGD/PRNGD query when communication socket is closed
3707 prematurely by EGD/PRNGD.
3708 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3710 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3713 *) Back-port of selected performance improvements from development
3714 branch, as well as improved support for PowerPC platforms.
3717 *) Add lots of checks for memory allocation failure, error codes to indicate
3718 failure and freeing up memory if a failure occurs.
3719 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3721 *) Add new -passin argument to dgst.
3724 *) Perform some character comparisons of different types in X509_NAME_cmp:
3725 this is needed for some certificates that reencode DNs into UTF8Strings
3726 (in violation of RFC3280) and can't or wont issue name rollover
3730 *) Make an explicit check during certificate validation to see that
3731 the CA setting in each certificate on the chain is correct. As a
3732 side effect always do the following basic checks on extensions,
3733 not just when there's an associated purpose to the check:
3735 - if there is an unhandled critical extension (unless the user
3736 has chosen to ignore this fault)
3737 - if the path length has been exceeded (if one is set at all)
3738 - that certain extensions fit the associated purpose (if one has
3742 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3744 *) Avoid a race condition when CRLs are checked in a multi threaded
3745 environment. This would happen due to the reordering of the revoked
3746 entries during signature checking and serial number lookup. Now the
3747 encoding is cached and the serial number sort performed under a lock.
3748 Add new STACK function sk_is_sorted().
3751 *) Add Delta CRL to the extension code.
3754 *) Various fixes to s3_pkt.c so alerts are sent properly.
3755 [David Holmes <d.holmes@f5.com>]
3757 *) Reduce the chances of duplicate issuer name and serial numbers (in
3758 violation of RFC3280) using the OpenSSL certificate creation utilities.
3759 This is done by creating a random 64 bit value for the initial serial
3760 number when a serial number file is created or when a self signed
3761 certificate is created using 'openssl req -x509'. The initial serial
3762 number file is created using 'openssl x509 -next_serial' in CA.pl
3763 rather than being initialized to 1.
3766 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3768 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3769 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3770 [Joe Orton, Steve Henson]
3772 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3774 [Joe Orton, Steve Henson]
3776 *) Make it possible to have multiple active certificates with the same
3777 subject in the CA index file. This is done only if the keyword
3778 'unique_subject' is set to 'no' in the main CA section (default
3779 if 'CA_default') of the configuration file. The value is saved
3780 with the database itself in a separate index attribute file,
3781 named like the index file with '.attr' appended to the name.
3784 *) X509 verify fixes. Disable broken certificate workarounds when
3785 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3786 keyUsage extension present. Don't accept CRLs with unhandled critical
3787 extensions: since verify currently doesn't process CRL extensions this
3788 rejects a CRL with *any* critical extensions. Add new verify error codes
3792 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3793 A clarification of RFC2560 will require the use of OCTET STRINGs and
3794 some implementations cannot handle the current raw format. Since OpenSSL
3795 copies and compares OCSP nonces as opaque blobs without any attempt at
3796 parsing them this should not create any compatibility issues.
3799 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3800 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3801 this HMAC (and other) operations are several times slower than OpenSSL
3805 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3806 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3808 *) Use the correct content when signing type "other".
3811 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3813 *) Fix various bugs revealed by running the NISCC test suite:
3815 Stop out of bounds reads in the ASN1 code when presented with
3816 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3818 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3820 If verify callback ignores invalid public key errors don't try to check
3821 certificate signature with the NULL public key.
3825 *) New -ignore_err option in ocsp application to stop the server
3826 exiting on the first error in a request.
3829 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3830 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3834 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3835 extra data after the compression methods not only for TLS 1.0
3836 but also for SSL 3.0 (as required by the specification).
3837 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3839 *) Change X509_certificate_type() to mark the key as exported/exportable
3840 when it's 512 *bits* long, not 512 bytes.
3843 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3844 blocks during encryption.
3847 *) Various fixes to base64 BIO and non blocking I/O. On write
3848 flushes were not handled properly if the BIO retried. On read
3849 data was not being buffered properly and had various logic bugs.
3850 This also affects blocking I/O when the data being decoded is a
3854 *) Various S/MIME bugfixes and compatibility changes:
3855 output correct application/pkcs7 MIME type if
3856 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3857 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3858 of files as .eml work). Correctly handle very long lines in MIME
3862 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3864 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3865 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3866 a protocol version number mismatch like a decryption error
3867 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3870 *) Turn on RSA blinding by default in the default implementation
3871 to avoid a timing attack. Applications that don't want it can call
3872 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3873 They would be ill-advised to do so in most cases.
3874 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3876 *) Change RSA blinding code so that it works when the PRNG is not
3877 seeded (in this case, the secret RSA exponent is abused as
3878 an unpredictable seed -- if it is not unpredictable, there
3879 is no point in blinding anyway). Make RSA blinding thread-safe
3880 by remembering the creator's thread ID in rsa->blinding and
3881 having all other threads use local one-time blinding factors
3882 (this requires more computation than sharing rsa->blinding, but
3883 avoids excessive locking; and if an RSA object is not shared
3884 between threads, blinding will still be very fast).
3887 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3888 ENGINE as defaults for all supported algorithms irrespective of
3889 the 'flags' parameter. 'flags' is now honoured, so applications
3890 should make sure they are passing it correctly.
3893 *) Target "mingw" now allows native Windows code to be generated in
3894 the Cygwin environment as well as with the MinGW compiler.
3897 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3899 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3900 via timing by performing a MAC computation even if incorrrect
3901 block cipher padding has been found. This is a countermeasure
3902 against active attacks where the attacker has to distinguish
3903 between bad padding and a MAC verification error. (CVE-2003-0078)
3905 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3906 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3907 Martin Vuagnoux (EPFL, Ilion)]
3909 *) Make the no-err option work as intended. The intention with no-err
3910 is not to have the whole error stack handling routines removed from
3911 libcrypto, it's only intended to remove all the function name and
3912 reason texts, thereby removing some of the footprint that may not
3913 be interesting if those errors aren't displayed anyway.
3915 NOTE: it's still possible for any application or module to have it's
3916 own set of error texts inserted. The routines are there, just not
3917 used by default when no-err is given.
3920 *) Add support for FreeBSD on IA64.
3921 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3923 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3924 Kerberos function mit_des_cbc_cksum(). Before this change,
3925 the value returned by DES_cbc_cksum() was like the one from
3926 mit_des_cbc_cksum(), except the bytes were swapped.
3927 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3929 *) Allow an application to disable the automatic SSL chain building.
3930 Before this a rather primitive chain build was always performed in
3931 ssl3_output_cert_chain(): an application had no way to send the
3932 correct chain if the automatic operation produced an incorrect result.
3934 Now the chain builder is disabled if either:
3936 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3938 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3940 The reasoning behind this is that an application would not want the
3941 auto chain building to take place if extra chain certificates are
3942 present and it might also want a means of sending no additional
3943 certificates (for example the chain has two certificates and the
3947 *) Add the possibility to build without the ENGINE framework.
3948 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3950 *) Under Win32 gmtime() can return NULL: check return value in
3951 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3954 *) DSA routines: under certain error conditions uninitialized BN objects
3955 could be freed. Solution: make sure initialization is performed early
3956 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3957 Nils Larsch <nla@trustcenter.de> via PR#459)
3960 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3961 checked on reconnect on the client side, therefore session resumption
3962 could still fail with a "ssl session id is different" error. This
3963 behaviour is masked when SSL_OP_ALL is used due to
3964 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3965 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3966 followup to PR #377.
3969 *) IA-32 assembler support enhancements: unified ELF targets, support
3970 for SCO/Caldera platforms, fix for Cygwin shared build.
3973 *) Add support for FreeBSD on sparc64. As a consequence, support for
3974 FreeBSD on non-x86 processors is separate from x86 processors on
3975 the config script, much like the NetBSD support.
3976 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3978 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3980 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3983 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3984 code (06) was taken as the first octet of the session ID and the last
3985 octet was ignored consequently. As a result SSLv2 client side session
3986 caching could not have worked due to the session ID mismatch between
3988 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3992 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3993 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3997 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3998 seems that in spite of existing for more than a year, many application
3999 author have done nothing to provide the necessary callbacks, which
4000 means that this particular engine will not work properly anywhere.
4001 This is a very unfortunate situation which forces us, in the name
4002 of usability, to give the hw_ncipher.c a static lock, which is part
4004 NOTE: This is for the 0.9.7 series ONLY. This hack will never
4005 appear in 0.9.8 or later. We EXPECT application authors to have
4006 dealt properly with this when 0.9.8 is released (unless we actually
4007 make such changes in the libcrypto locking code that changes will
4008 have to be made anyway).
4011 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
4012 octets have been read, EOF or an error occurs. Without this change
4013 some truncated ASN1 structures will not produce an error.
4016 *) Disable Heimdal support, since it hasn't been fully implemented.
4017 Still give the possibility to force the use of Heimdal, but with
4018 warnings and a request that patches get sent to openssl-dev.
4021 *) Add the VC-CE target, introduce the WINCE sysname, and add
4022 INSTALL.WCE and appropriate conditionals to make it build.
4023 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
4025 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
4026 cygssl-x.y.z.dll, where x, y and z are the major, minor and
4027 edit numbers of the version.
4028 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4030 *) Introduce safe string copy and catenation functions
4031 (BUF_strlcpy() and BUF_strlcat()).
4032 [Ben Laurie (CHATS) and Richard Levitte]
4034 *) Avoid using fixed-size buffers for one-line DNs.
4035 [Ben Laurie (CHATS)]
4037 *) Add BUF_MEM_grow_clean() to avoid information leakage when
4038 resizing buffers containing secrets, and use where appropriate.
4039 [Ben Laurie (CHATS)]
4041 *) Avoid using fixed size buffers for configuration file location.
4042 [Ben Laurie (CHATS)]
4044 *) Avoid filename truncation for various CA files.
4045 [Ben Laurie (CHATS)]
4047 *) Use sizeof in preference to magic numbers.
4048 [Ben Laurie (CHATS)]
4050 *) Avoid filename truncation in cert requests.
4051 [Ben Laurie (CHATS)]
4053 *) Add assertions to check for (supposedly impossible) buffer
4055 [Ben Laurie (CHATS)]
4057 *) Don't cache truncated DNS entries in the local cache (this could
4058 potentially lead to a spoofing attack).
4059 [Ben Laurie (CHATS)]
4061 *) Fix various buffers to be large enough for hex/decimal
4062 representations in a platform independent manner.
4063 [Ben Laurie (CHATS)]
4065 *) Add CRYPTO_realloc_clean() to avoid information leakage when
4066 resizing buffers containing secrets, and use where appropriate.
4067 [Ben Laurie (CHATS)]
4069 *) Add BIO_indent() to avoid much slightly worrying code to do
4071 [Ben Laurie (CHATS)]
4073 *) Convert sprintf()/BIO_puts() to BIO_printf().
4074 [Ben Laurie (CHATS)]
4076 *) buffer_gets() could terminate with the buffer only half
4078 [Ben Laurie (CHATS)]
4080 *) Add assertions to prevent user-supplied crypto functions from
4081 overflowing internal buffers by having large block sizes, etc.
4082 [Ben Laurie (CHATS)]
4084 *) New OPENSSL_assert() macro (similar to assert(), but enabled
4086 [Ben Laurie (CHATS)]
4088 *) Eliminate unused copy of key in RC4.
4089 [Ben Laurie (CHATS)]
4091 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
4092 [Ben Laurie (CHATS)]
4094 *) Fix off-by-one error in EGD path.
4095 [Ben Laurie (CHATS)]
4097 *) If RANDFILE path is too long, ignore instead of truncating.
4098 [Ben Laurie (CHATS)]
4100 *) Eliminate unused and incorrectly sized X.509 structure
4102 [Ben Laurie (CHATS)]
4104 *) Eliminate unused and dangerous function knumber().
4105 [Ben Laurie (CHATS)]
4107 *) Eliminate unused and dangerous structure, KSSL_ERR.
4108 [Ben Laurie (CHATS)]
4110 *) Protect against overlong session ID context length in an encoded
4111 session object. Since these are local, this does not appear to be
4113 [Ben Laurie (CHATS)]
4115 *) Change from security patch (see 0.9.6e below) that did not affect
4116 the 0.9.6 release series:
4118 Remote buffer overflow in SSL3 protocol - an attacker could
4119 supply an oversized master key in Kerberos-enabled versions.
4121 [Ben Laurie (CHATS)]
4123 *) Change the SSL kerb5 codes to match RFC 2712.
4126 *) Make -nameopt work fully for req and add -reqopt switch.
4127 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
4129 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
4130 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
4132 *) Make sure tests can be performed even if the corresponding algorithms
4133 have been removed entirely. This was also the last step to make
4134 OpenSSL compilable with DJGPP under all reasonable conditions.
4135 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
4137 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
4138 to allow version independent disabling of normally unselected ciphers,
4139 which may be activated as a side-effect of selecting a single cipher.
4141 (E.g., cipher list string "RSA" enables ciphersuites that are left
4142 out of "ALL" because they do not provide symmetric encryption.
4143 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4144 [Lutz Jaenicke, Bodo Moeller]
4146 *) Add appropriate support for separate platform-dependent build
4147 directories. The recommended way to make a platform-dependent
4148 build directory is the following (tested on Linux), maybe with
4151 # Place yourself outside of the OpenSSL source tree. In
4152 # this example, the environment variable OPENSSL_SOURCE
4153 # is assumed to contain the absolute OpenSSL source directory.
4154 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4155 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4156 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4157 mkdir -p `dirname $F`
4158 ln -s $OPENSSL_SOURCE/$F $F
4161 To be absolutely sure not to disturb the source tree, a "make clean"
4162 is a good thing. If it isn't successfull, don't worry about it,
4163 it probably means the source directory is very clean.
4166 *) Make sure any ENGINE control commands make local copies of string
4167 pointers passed to them whenever necessary. Otherwise it is possible
4168 the caller may have overwritten (or deallocated) the original string
4169 data when a later ENGINE operation tries to use the stored values.
4170 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4172 *) Improve diagnostics in file reading and command-line digests.
4173 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4175 *) Add AES modes CFB and OFB to the object database. Correct an
4176 error in AES-CFB decryption.
4179 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4180 allows existing EVP_CIPHER_CTX structures to be reused after
4181 calling EVP_*Final(). This behaviour is used by encryption
4182 BIOs and some applications. This has the side effect that
4183 applications must explicitly clean up cipher contexts with
4184 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4187 *) Check the values of dna and dnb in bn_mul_recursive before calling
4188 bn_mul_comba (a non zero value means the a or b arrays do not contain
4189 n2 elements) and fallback to bn_mul_normal if either is not zero.
4192 *) Fix escaping of non-ASCII characters when using the -subj option
4193 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4196 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4197 form for "surname", serialNumber has no short form.
4198 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4199 therefore remove "mail" short name for "internet 7".
4200 The OID for unique identifiers in X509 certificates is
4201 x500UniqueIdentifier, not uniqueIdentifier.
4202 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4205 *) Add an "init" command to the ENGINE config module and auto initialize
4206 ENGINEs. Without any "init" command the ENGINE will be initialized
4207 after all ctrl commands have been executed on it. If init=1 the
4208 ENGINE is initailized at that point (ctrls before that point are run
4209 on the uninitialized ENGINE and after on the initialized one). If
4210 init=0 then the ENGINE will not be iniatialized at all.
4213 *) Fix the 'app_verify_callback' interface so that the user-defined
4214 argument is actually passed to the callback: In the
4215 SSL_CTX_set_cert_verify_callback() prototype, the callback
4216 declaration has been changed from
4219 int (*cb)(X509_STORE_CTX *,void *);
4220 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4221 i=s->ctx->app_verify_callback(&ctx)
4222 has been changed into
4223 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4225 To update applications using SSL_CTX_set_cert_verify_callback(),
4226 a dummy argument can be added to their callback functions.
4227 [D. K. Smetters <smetters@parc.xerox.com>]
4229 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4230 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4232 *) Add and OPENSSL_LOAD_CONF define which will cause
4233 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4234 This allows older applications to transparently support certain
4235 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4236 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4237 load the config file and OPENSSL_add_all_algorithms_conf() which will
4238 always load it have also been added.
4241 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4242 Adjust NIDs and EVP layer.
4243 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4245 *) Config modules support in openssl utility.
4247 Most commands now load modules from the config file,
4248 though in a few (such as version) this isn't done
4249 because it couldn't be used for anything.
4251 In the case of ca and req the config file used is
4252 the same as the utility itself: that is the -config
4253 command line option can be used to specify an
4257 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4258 use "openssl_conf" if filename is NULL use default openssl config file.
4261 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4262 config section name. Add a new flag to tolerate a missing config file
4263 and move code to CONF_modules_load_file().
4266 *) Support for crypto accelerator cards from Accelerated Encryption
4267 Processing, www.aep.ie. (Use engine 'aep')
4268 The support was copied from 0.9.6c [engine] and adapted/corrected
4269 to work with the new engine framework.
4270 [AEP Inc. and Richard Levitte]
4272 *) Support for SureWare crypto accelerator cards from Baltimore
4273 Technologies. (Use engine 'sureware')
4274 The support was copied from 0.9.6c [engine] and adapted
4275 to work with the new engine framework.
4278 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4279 make the newer ENGINE framework commands for the CHIL engine work.
4280 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4282 *) Make it possible to produce shared libraries on ReliantUNIX.
4283 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4285 *) Add the configuration target debug-linux-ppro.
4286 Make 'openssl rsa' use the general key loading routines
4287 implemented in apps.c, and make those routines able to
4288 handle the key format FORMAT_NETSCAPE and the variant
4290 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4292 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4293 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4295 *) Add -keyform to rsautl, and document -engine.
4296 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4298 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4299 BIO_R_NO_SUCH_FILE error code rather than the generic
4300 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4303 *) Add new functions
4305 ERR_peek_last_error_line
4306 ERR_peek_last_error_line_data.
4307 These are similar to
4310 ERR_peek_error_line_data,
4311 but report on the latest error recorded rather than the first one
4312 still in the error queue.
4313 [Ben Laurie, Bodo Moeller]
4315 *) default_algorithms option in ENGINE config module. This allows things
4317 default_algorithms = ALL
4318 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4321 *) Prelminary ENGINE config module.
4324 *) New experimental application configuration code.
4327 *) Change the AES code to follow the same name structure as all other
4328 symmetric ciphers, and behave the same way. Move everything to
4329 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4330 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4332 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4333 [Ben Laurie and Theo de Raadt]
4335 *) Add option to output public keys in req command.
4336 [Massimiliano Pala madwolf@openca.org]
4338 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4339 (up to about 10% better than before for P-192 and P-224).
4342 *) New functions/macros
4344 SSL_CTX_set_msg_callback(ctx, cb)
4345 SSL_CTX_set_msg_callback_arg(ctx, arg)
4346 SSL_set_msg_callback(ssl, cb)
4347 SSL_set_msg_callback_arg(ssl, arg)
4349 to request calling a callback function
4351 void cb(int write_p, int version, int content_type,
4352 const void *buf, size_t len, SSL *ssl, void *arg)
4354 whenever a protocol message has been completely received
4355 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4356 protocol version according to which the SSL library interprets
4357 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4358 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4359 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4360 specification (change_cipher_spec(20), alert(21), handshake(22)).
4361 'buf' and 'len' point to the actual message, 'ssl' to the
4362 SSL object, and 'arg' is the application-defined value set by
4363 SSL[_CTX]_set_msg_callback_arg().
4365 'openssl s_client' and 'openssl s_server' have new '-msg' options
4366 to enable a callback that displays all protocol messages.
4369 *) Change the shared library support so shared libraries are built as
4370 soon as the corresponding static library is finished, and thereby get
4371 openssl and the test programs linked against the shared library.
4372 This still only happens when the keyword "shard" has been given to
4373 the configuration scripts.
4375 NOTE: shared library support is still an experimental thing, and
4376 backward binary compatibility is still not guaranteed.
4377 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4379 *) Add support for Subject Information Access extension.
4380 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4382 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4383 additional bytes when new memory had to be allocated, not just
4384 when reusing an existing buffer.
4387 *) New command line and configuration option 'utf8' for the req command.
4388 This allows field values to be specified as UTF8 strings.
4391 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4392 runs for the former and machine-readable output for the latter.
4395 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4396 of the e-mail address in the DN (i.e., it will go into a certificate
4397 extension only). The new configuration file option 'email_in_dn = no'
4398 has the same effect.
4399 [Massimiliano Pala madwolf@openca.org]
4401 *) Change all functions with names starting with des_ to be starting
4402 with DES_ instead. Add wrappers that are compatible with libdes,
4403 but are named _ossl_old_des_*. Finally, add macros that map the
4404 des_* symbols to the corresponding _ossl_old_des_* if libdes
4405 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4406 desired, the des_* symbols will be mapped to DES_*, with one
4409 Since we provide two compatibility mappings, the user needs to
4410 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4411 compatibility is desired. The default (i.e., when that macro
4412 isn't defined) is OpenSSL 0.9.6c compatibility.
4414 There are also macros that enable and disable the support of old
4415 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4416 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4417 are defined, the default will apply: to support the old des routines.
4419 In either case, one must include openssl/des.h to get the correct
4420 definitions. Do not try to just include openssl/des_old.h, that
4423 NOTE: This is a major break of an old API into a new one. Software
4424 authors are encouraged to switch to the DES_ style functions. Some
4425 time in the future, des_old.h and the libdes compatibility functions
4426 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4427 default), and then completely removed.
4430 *) Test for certificates which contain unsupported critical extensions.
4431 If such a certificate is found during a verify operation it is
4432 rejected by default: this behaviour can be overridden by either
4433 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4434 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4435 X509_supported_extension() has also been added which returns 1 if a
4436 particular extension is supported.
4439 *) Modify the behaviour of EVP cipher functions in similar way to digests
4440 to retain compatibility with existing code.
4443 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4444 compatibility with existing code. In particular the 'ctx' parameter does
4445 not have to be to be initialized before the call to EVP_DigestInit() and
4446 it is tidied up after a call to EVP_DigestFinal(). New function
4447 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4448 EVP_MD_CTX_copy() changed to not require the destination to be
4449 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4450 requires the destination to be valid.
4452 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4453 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4456 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4457 so that complete 'Handshake' protocol structures are kept in memory
4458 instead of overwriting 'msg_type' and 'length' with 'body' data.
4461 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4462 [Massimo Santin via Richard Levitte]
4464 *) Major restructuring to the underlying ENGINE code. This includes
4465 reduction of linker bloat, separation of pure "ENGINE" manipulation
4466 (initialisation, etc) from functionality dealing with implementations
4467 of specific crypto iterfaces. This change also introduces integrated
4468 support for symmetric ciphers and digest implementations - so ENGINEs
4469 can now accelerate these by providing EVP_CIPHER and EVP_MD
4470 implementations of their own. This is detailed in crypto/engine/README
4471 as it couldn't be adequately described here. However, there are a few
4472 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4473 were changed in the original introduction of ENGINE code have now
4474 reverted back - the hooking from this code to ENGINE is now a good
4475 deal more passive and at run-time, operations deal directly with
4476 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4477 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4478 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4479 they were not being used by the framework as there is no concept of a
4480 BIGNUM_METHOD and they could not be generalised to the new
4481 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4482 ENGINE_cpy() has been removed as it cannot be consistently defined in
4486 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4489 *) Change mkdef.pl to sort symbols that get the same entry number,
4490 and make sure the automatically generated functions ERR_load_*
4491 become part of libeay.num as well.
4494 *) New function SSL_renegotiate_pending(). This returns true once
4495 renegotiation has been requested (either SSL_renegotiate() call
4496 or HelloRequest/ClientHello receveived from the peer) and becomes
4497 false once a handshake has been completed.
4498 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4499 sends a HelloRequest, but does not ensure that a handshake takes
4500 place. SSL_renegotiate_pending() is useful for checking if the
4501 client has followed the request.)
4504 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4505 By default, clients may request session resumption even during
4506 renegotiation (if session ID contexts permit); with this option,
4507 session resumption is possible only in the first handshake.
4509 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4510 more bits available for options that should not be part of
4511 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4514 *) Add some demos for certificate and certificate request creation.
4517 *) Make maximum certificate chain size accepted from the peer application
4518 settable (SSL*_get/set_max_cert_list()), as proposed by
4519 "Douglas E. Engert" <deengert@anl.gov>.
4522 *) Add support for shared libraries for Unixware-7
4523 (Boyd Lynn Gerber <gerberb@zenez.com>).
4526 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4527 be done prior to destruction. Use this to unload error strings from
4528 ENGINEs that load their own error strings. NB: This adds two new API
4529 functions to "get" and "set" this destroy handler in an ENGINE.
4532 *) Alter all existing ENGINE implementations (except "openssl" and
4533 "openbsd") to dynamically instantiate their own error strings. This
4534 makes them more flexible to be built both as statically-linked ENGINEs
4535 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4536 Also, add stub code to each that makes building them as self-contained
4537 shared-libraries easier (see README.ENGINE).
4540 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4541 implementations into applications that are completely implemented in
4542 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4543 commands that can be used to configure what shared-library to load and
4544 to control aspects of the way it is handled. Also, made an update to
4545 the README.ENGINE file that brings its information up-to-date and
4546 provides some information and instructions on the "dynamic" ENGINE
4547 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4550 *) Make it possible to unload ranges of ERR strings with a new
4551 "ERR_unload_strings" function.
4554 *) Add a copy() function to EVP_MD.
4557 *) Make EVP_MD routines take a context pointer instead of just the
4558 md_data void pointer.
4561 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4562 that the digest can only process a single chunk of data
4563 (typically because it is provided by a piece of
4564 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4565 is only going to provide a single chunk of data, and hence the
4566 framework needn't accumulate the data for oneshot drivers.
4569 *) As with "ERR", make it possible to replace the underlying "ex_data"
4570 functions. This change also alters the storage and management of global
4571 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4572 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4573 index counters. The API functions that use this state have been changed
4574 to take a "class_index" rather than pointers to the class's local STACK
4575 and counter, and there is now an API function to dynamically create new
4576 classes. This centralisation allows us to (a) plug a lot of the
4577 thread-safety problems that existed, and (b) makes it possible to clean
4578 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4579 such data would previously have always leaked in application code and
4580 workarounds were in place to make the memory debugging turn a blind eye
4581 to it. Application code that doesn't use this new function will still
4582 leak as before, but their memory debugging output will announce it now
4583 rather than letting it slide.
4585 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4586 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4587 has a return value to indicate success or failure.
4590 *) Make it possible to replace the underlying "ERR" functions such that the
4591 global state (2 LHASH tables and 2 locks) is only used by the "default"
4592 implementation. This change also adds two functions to "get" and "set"
4593 the implementation prior to it being automatically set the first time
4594 any other ERR function takes place. Ie. an application can call "get",
4595 pass the return value to a module it has just loaded, and that module
4596 can call its own "set" function using that value. This means the
4597 module's "ERR" operations will use (and modify) the error state in the
4598 application and not in its own statically linked copy of OpenSSL code.
4601 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4602 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4603 the operation, and provides a more encapsulated way for external code
4604 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4605 to use these functions rather than manually incrementing the counts.
4607 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4610 *) Add EVP test program.
4613 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4616 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4617 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4618 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4619 These allow a CRL to be built without having to access X509_CRL fields
4620 directly. Modify 'ca' application to use new functions.
4623 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4624 bug workarounds. Rollback attack detection is a security feature.
4625 The problem will only arise on OpenSSL servers when TLSv1 is not
4626 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4627 Software authors not wanting to support TLSv1 will have special reasons
4628 for their choice and can explicitly enable this option.
4629 [Bodo Moeller, Lutz Jaenicke]
4631 *) Rationalise EVP so it can be extended: don't include a union of
4632 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4633 (similar to those existing for EVP_CIPHER_CTX).
4638 EVP_MD_CTX_init(&md); /* new function call */
4639 EVP_DigestInit(&md, EVP_sha1());
4640 EVP_DigestUpdate(&md, in, len);
4641 EVP_DigestFinal(&md, out, NULL);
4642 EVP_MD_CTX_cleanup(&md); /* new function call */
4646 *) Make DES key schedule conform to the usual scheme, as well as
4647 correcting its structure. This means that calls to DES functions
4648 now have to pass a pointer to a des_key_schedule instead of a
4649 plain des_key_schedule (which was actually always a pointer
4652 des_key_schedule ks;
4654 des_set_key_checked(..., &ks);
4655 des_ncbc_encrypt(..., &ks, ...);
4657 (Note that a later change renames 'des_...' into 'DES_...'.)
4660 *) Initial reduction of linker bloat: the use of some functions, such as
4661 PEM causes large amounts of unused functions to be linked in due to
4662 poor organisation. For example pem_all.c contains every PEM function
4663 which has a knock on effect of linking in large amounts of (unused)
4664 ASN1 code. Grouping together similar functions and splitting unrelated
4665 functions prevents this.
4668 *) Cleanup of EVP macros.
4671 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4672 correct _ecb suffix.
4675 *) Add initial OCSP responder support to ocsp application. The
4676 revocation information is handled using the text based index
4677 use by the ca application. The responder can either handle
4678 requests generated internally, supplied in files (for example
4679 via a CGI script) or using an internal minimal server.
4682 *) Add configuration choices to get zlib compression for TLS.
4685 *) Changes to Kerberos SSL for RFC 2712 compliance:
4686 1. Implemented real KerberosWrapper, instead of just using
4687 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4688 2. Implemented optional authenticator field of KerberosWrapper.
4690 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4691 and authenticator structs; see crypto/krb5/.
4693 Generalized Kerberos calls to support multiple Kerberos libraries.
4694 [Vern Staats <staatsvr@asc.hpc.mil>,
4695 Jeffrey Altman <jaltman@columbia.edu>
4696 via Richard Levitte]
4698 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4699 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4700 values for each of the key sizes rather than having just
4701 parameters (and 'speed' generating keys each time).
4704 *) Speed up EVP routines.
4707 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4708 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4709 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4710 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4712 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4713 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4714 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4717 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4719 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4722 *) Added the OS2-EMX target.
4723 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4725 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4726 to support NCONF routines in extension code. New function CONF_set_nconf()
4727 to allow functions which take an NCONF to also handle the old LHASH
4728 structure: this means that the old CONF compatible routines can be
4729 retained (in particular wrt extensions) without having to duplicate the
4730 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4733 *) Enhance the general user interface with mechanisms for inner control
4734 and with possibilities to have yes/no kind of prompts.
4737 *) Change all calls to low level digest routines in the library and
4738 applications to use EVP. Add missing calls to HMAC_cleanup() and
4739 don't assume HMAC_CTX can be copied using memcpy().
4740 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4742 *) Add the possibility to control engines through control names but with
4743 arbitrary arguments instead of just a string.
4744 Change the key loaders to take a UI_METHOD instead of a callback
4745 function pointer. NOTE: this breaks binary compatibility with earlier
4746 versions of OpenSSL [engine].
4747 Adapt the nCipher code for these new conditions and add a card insertion
4751 *) Enhance the general user interface with mechanisms to better support
4752 dialog box interfaces, application-defined prompts, the possibility
4753 to use defaults (for example default passwords from somewhere else)
4754 and interrupts/cancellations.
4757 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4758 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4761 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4762 tidy up some unnecessarily weird code in 'sk_new()').
4763 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4765 *) Change the key loading routines for ENGINEs to use the same kind
4766 callback (pem_password_cb) as all other routines that need this
4770 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4771 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4772 than this minimum value is recommended.
4775 *) New random seeder for OpenVMS, using the system process statistics
4776 that are easily reachable.
4779 *) Windows apparently can't transparently handle global
4780 variables defined in DLLs. Initialisations such as:
4782 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4784 wont compile. This is used by the any applications that need to
4785 declare their own ASN1 modules. This was fixed by adding the option
4786 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4787 needed for static libraries under Win32.
4790 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4791 setting of purpose and trust fields. New X509_STORE trust and
4792 purpose functions and tidy up setting in other SSL functions.
4795 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4796 structure. These are inherited by X509_STORE_CTX when it is
4797 initialised. This allows various defaults to be set in the
4798 X509_STORE structure (such as flags for CRL checking and custom
4799 purpose or trust settings) for functions which only use X509_STORE_CTX
4800 internally such as S/MIME.
4802 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4803 trust settings if they are not set in X509_STORE. This allows X509_STORE
4804 purposes and trust (in S/MIME for example) to override any set by default.
4806 Add command line options for CRL checking to smime, s_client and s_server
4810 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4811 are set then the CRL is looked up in the X509_STORE structure and
4812 its validity and signature checked, then if the certificate is found
4813 in the CRL the verify fails with a revoked error.
4815 Various new CRL related callbacks added to X509_STORE_CTX structure.
4817 Command line options added to 'verify' application to support this.
4819 This needs some additional work, such as being able to handle multiple
4820 CRLs with different times, extension based lookup (rather than just
4821 by subject name) and ultimately more complete V2 CRL extension
4825 *) Add a general user interface API (crypto/ui/). This is designed
4826 to replace things like des_read_password and friends (backward
4827 compatibility functions using this new API are provided).
4828 The purpose is to remove prompting functions from the DES code
4829 section as well as provide for prompting through dialog boxes in
4830 a window system and the like.
4833 *) Add "ex_data" support to ENGINE so implementations can add state at a
4834 per-structure level rather than having to store it globally.
4837 *) Make it possible for ENGINE structures to be copied when retrieved by
4838 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4839 This causes the "original" ENGINE structure to act like a template,
4840 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4841 operational state can be localised to each ENGINE structure, despite the
4842 fact they all share the same "methods". New ENGINE structures returned in
4843 this case have no functional references and the return value is the single
4844 structural reference. This matches the single structural reference returned
4845 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4849 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4850 needs to match any other type at all we need to manually clear the
4854 *) Changes to the "openssl engine" utility to include;
4855 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4856 about an ENGINE's available control commands.
4857 - executing control commands from command line arguments using the
4858 '-pre' and '-post' switches. '-post' is only used if '-t' is
4859 specified and the ENGINE is successfully initialised. The syntax for
4860 the individual commands are colon-separated, for example;
4861 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4864 *) New dynamic control command support for ENGINEs. ENGINEs can now
4865 declare their own commands (numbers), names (strings), descriptions,
4866 and input types for run-time discovery by calling applications. A
4867 subset of these commands are implicitly classed as "executable"
4868 depending on their input type, and only these can be invoked through
4869 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4870 can be based on user input, config files, etc). The distinction is
4871 that "executable" commands cannot return anything other than a boolean
4872 result and can only support numeric or string input, whereas some
4873 discoverable commands may only be for direct use through
4874 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4875 pointers, or other custom uses. The "executable" commands are to
4876 support parameterisations of ENGINE behaviour that can be
4877 unambiguously defined by ENGINEs and used consistently across any
4878 OpenSSL-based application. Commands have been added to all the
4879 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4880 control over shared-library paths without source code alterations.
4883 *) Changed all ENGINE implementations to dynamically allocate their
4884 ENGINEs rather than declaring them statically. Apart from this being
4885 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4886 this also allows the implementations to compile without using the
4887 internal engine_int.h header.
4890 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4891 'const' value. Any code that should be able to modify a RAND_METHOD
4892 should already have non-const pointers to it (ie. they should only
4893 modify their own ones).
4896 *) Made a variety of little tweaks to the ENGINE code.
4897 - "atalla" and "ubsec" string definitions were moved from header files
4898 to C code. "nuron" string definitions were placed in variables
4899 rather than hard-coded - allowing parameterisation of these values
4900 later on via ctrl() commands.
4901 - Removed unused "#if 0"'d code.
4902 - Fixed engine list iteration code so it uses ENGINE_free() to release
4903 structural references.
4904 - Constified the RAND_METHOD element of ENGINE structures.
4905 - Constified various get/set functions as appropriate and added
4906 missing functions (including a catch-all ENGINE_cpy that duplicates
4907 all ENGINE values onto a new ENGINE except reference counts/state).
4908 - Removed NULL parameter checks in get/set functions. Setting a method
4909 or function to NULL is a way of cancelling out a previously set
4910 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4911 and doesn't justify the extra error symbols and code.
4912 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4913 flags from engine_int.h to engine.h.
4914 - Changed prototypes for ENGINE handler functions (init(), finish(),
4915 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4918 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4919 to the algorithm using long division. The binary algorithm can be
4920 used only if the modulus is odd. On 32-bit systems, it is faster
4921 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4922 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4923 up to 450 bits. In 64-bit environments, the binary algorithm
4924 appears to be advantageous for much longer moduli; here we use it
4925 for moduli up to 2048 bits.
4928 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4929 could not support the combine flag in choice fields.
4932 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4933 extensions from a certificate request to the certificate.
4936 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4937 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4938 file: this allows the display of the certificate about to be
4939 signed to be customised, to allow certain fields to be included
4940 or excluded and extension details. The old system didn't display
4941 multicharacter strings properly, omitted fields not in the policy
4942 and couldn't display additional details such as extensions.
4945 *) Function EC_POINTs_mul for multiple scalar multiplication
4946 of an arbitrary number of elliptic curve points
4947 \sum scalars[i]*points[i],
4948 optionally including the generator defined for the EC_GROUP:
4949 scalar*generator + \sum scalars[i]*points[i].
4951 EC_POINT_mul is a simple wrapper function for the typical case
4952 that the point list has just one item (besides the optional
4956 *) First EC_METHODs for curves over GF(p):
4958 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4959 operations and provides various method functions that can also
4960 operate with faster implementations of modular arithmetic.
4962 EC_GFp_mont_method() reuses most functions that are part of
4963 EC_GFp_simple_method, but uses Montgomery arithmetic.
4965 [Bodo Moeller; point addition and point doubling
4966 implementation directly derived from source code provided by
4967 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4969 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4970 crypto/ec/ec_lib.c):
4972 Curves are EC_GROUP objects (with an optional group generator)
4973 based on EC_METHODs that are built into the library.
4975 Points are EC_POINT objects based on EC_GROUP objects.
4977 Most of the framework would be able to handle curves over arbitrary
4978 finite fields, but as there are no obvious types for fields other
4979 than GF(p), some functions are limited to that for now.
4982 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4983 that the file contains a complete HTTP response.
4986 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4987 change the def and num file printf format specifier from "%-40sXXX"
4988 to "%-39s XXX". The latter will always guarantee a space after the
4989 field while the former will cause them to run together if the field
4990 is 40 of more characters long.
4993 *) Constify the cipher and digest 'method' functions and structures
4994 and modify related functions to take constant EVP_MD and EVP_CIPHER
4998 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4999 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
5002 *) Modify EVP_Digest*() routines so they now return values. Although the
5003 internal software routines can never fail additional hardware versions
5007 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
5009 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
5010 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
5013 ERR_R_NESTED_ASN1_ERROR
5015 ERR_R_MISSING_ASN1_EOS
5016 were 4 .. 9, conflicting with
5017 ERR_LIB_RSA (= ERR_R_RSA_LIB)
5019 ERR_LIB_PEM (= ERR_R_PEM_LIB).
5020 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
5022 Add new error code 'ERR_R_INTERNAL_ERROR'.
5025 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
5029 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
5030 sets the subject name for a new request or supersedes the
5031 subject name in a given request. Formats that can be parsed are
5032 'CN=Some Name, OU=myOU, C=IT'
5034 'CN=Some Name/OU=myOU/C=IT'.
5036 Add options '-batch' and '-verbose' to 'openssl req'.
5037 [Massimiliano Pala <madwolf@hackmasters.net>]
5039 *) Introduce the possibility to access global variables through
5040 functions on platform were that's the best way to handle exporting
5041 global variables in shared libraries. To enable this functionality,
5042 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
5043 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
5044 is normally done by Configure or something similar).
5046 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
5047 in the source file (foo.c) like this:
5049 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
5050 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
5052 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
5053 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
5055 OPENSSL_DECLARE_GLOBAL(int,foo);
5056 #define foo OPENSSL_GLOBAL_REF(foo)
5057 OPENSSL_DECLARE_GLOBAL(double,bar);
5058 #define bar OPENSSL_GLOBAL_REF(bar)
5060 The #defines are very important, and therefore so is including the
5061 header file everywhere where the defined globals are used.
5063 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
5064 of ASN.1 items, but that structure is a bit different.
5066 The largest change is in util/mkdef.pl which has been enhanced with
5067 better and easier to understand logic to choose which symbols should
5068 go into the Windows .def files as well as a number of fixes and code
5069 cleanup (among others, algorithm keywords are now sorted
5070 lexicographically to avoid constant rewrites).
5073 *) In BN_div() keep a copy of the sign of 'num' before writing the
5074 result to 'rm' because if rm==num the value will be overwritten
5075 and produce the wrong result if 'num' is negative: this caused
5076 problems with BN_mod() and BN_nnmod().
5079 *) Function OCSP_request_verify(). This checks the signature on an
5080 OCSP request and verifies the signer certificate. The signer
5081 certificate is just checked for a generic purpose and OCSP request
5085 *) Add OCSP_check_validity() function to check the validity of OCSP
5086 responses. OCSP responses are prepared in real time and may only
5087 be a few seconds old. Simply checking that the current time lies
5088 between thisUpdate and nextUpdate max reject otherwise valid responses
5089 caused by either OCSP responder or client clock inaccuracy. Instead
5090 we allow thisUpdate and nextUpdate to fall within a certain period of
5091 the current time. The age of the response can also optionally be
5092 checked. Two new options -validity_period and -status_age added to
5096 *) If signature or public key algorithm is unrecognized print out its
5097 OID rather that just UNKNOWN.
5100 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
5101 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
5102 ID to be generated from the issuer certificate alone which can then be
5103 passed to OCSP_id_issuer_cmp().
5106 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
5107 ASN1 modules to export functions returning ASN1_ITEM pointers
5108 instead of the ASN1_ITEM structures themselves. This adds several
5109 new macros which allow the underlying ASN1 function/structure to
5110 be accessed transparently. As a result code should not use ASN1_ITEM
5111 references directly (such as &X509_it) but instead use the relevant
5112 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
5113 use of the new ASN1 code on platforms where exporting structures
5114 is problematical (for example in shared libraries) but exporting
5115 functions returning pointers to structures is not.
5118 *) Add support for overriding the generation of SSL/TLS session IDs.
5119 These callbacks can be registered either in an SSL_CTX or per SSL.
5120 The purpose of this is to allow applications to control, if they wish,
5121 the arbitrary values chosen for use as session IDs, particularly as it
5122 can be useful for session caching in multiple-server environments. A
5123 command-line switch for testing this (and any client code that wishes
5124 to use such a feature) has been added to "s_server".
5125 [Geoff Thorpe, Lutz Jaenicke]
5127 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
5128 of the form '#if defined(...) || defined(...) || ...' and
5129 '#if !defined(...) && !defined(...) && ...'. This also avoids
5130 the growing number of special cases it was previously handling.
5133 *) Make all configuration macros available for application by making
5134 sure they are available in opensslconf.h, by giving them names starting
5135 with "OPENSSL_" to avoid conflicts with other packages and by making
5136 sure e_os2.h will cover all platform-specific cases together with
5138 Additionally, it is now possible to define configuration/platform-
5139 specific names (called "system identities"). In the C code, these
5140 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
5141 macro with the name beginning with "OPENSSL_SYS_", which is determined
5142 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5146 *) New option -set_serial to 'req' and 'x509' this allows the serial
5147 number to use to be specified on the command line. Previously self
5148 signed certificates were hard coded with serial number 0 and the
5149 CA options of 'x509' had to use a serial number in a file which was
5153 *) New options to 'ca' utility to support V2 CRL entry extensions.
5154 Currently CRL reason, invalidity date and hold instruction are
5155 supported. Add new CRL extensions to V3 code and some new objects.
5158 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5159 disable standard block padding (aka PKCS#5 padding) in the EVP
5160 API, which was previously mandatory. This means that the data is
5161 not padded in any way and so the total length much be a multiple
5162 of the block size, otherwise an error occurs.
5165 *) Initial (incomplete) OCSP SSL support.
5168 *) New function OCSP_parse_url(). This splits up a URL into its host,
5169 port and path components: primarily to parse OCSP URLs. New -url
5170 option to ocsp utility.
5173 *) New nonce behavior. The return value of OCSP_check_nonce() now
5174 reflects the various checks performed. Applications can decide
5175 whether to tolerate certain situations such as an absent nonce
5176 in a response when one was present in a request: the ocsp application
5177 just prints out a warning. New function OCSP_add1_basic_nonce()
5178 this is to allow responders to include a nonce in a response even if
5179 the request is nonce-less.
5182 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5183 skipped when using openssl x509 multiple times on a single input file,
5184 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5187 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5188 set string type: to handle setting ASN1_TIME structures. Fix ca
5189 utility to correctly initialize revocation date of CRLs.
5192 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5193 the clients preferred ciphersuites and rather use its own preferences.
5194 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5195 Internet Explorer by ensuring unchanged hash method during stepup.
5196 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5199 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5200 to aes and add a new 'exist' option to print out symbols that don't
5204 *) Additional options to ocsp utility to allow flags to be set and
5205 additional certificates supplied.
5208 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5209 OCSP client a number of certificate to only verify the response
5213 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5214 handle the new API. Currently only ECB, CBC modes supported. Add new
5217 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5218 Encryption Standard (AES) Ciphersuites for Transport Layer
5219 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5220 not enabled by default and were not part of the "ALL" ciphersuite
5221 alias because they were not yet official; they could be
5222 explicitly requested by specifying the "AESdraft" ciphersuite
5223 group alias. In the final release of OpenSSL 0.9.7, the group
5224 alias is called "AES" and is part of "ALL".)
5225 [Ben Laurie, Steve Henson, Bodo Moeller]
5227 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5228 request to response.
5231 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5232 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5233 extract information from a certificate request. OCSP_response_create()
5234 creates a response and optionally adds a basic response structure.
5235 OCSP_basic_add1_status() adds a complete single response to a basic
5236 response and returns the OCSP_SINGLERESP structure just added (to allow
5237 extensions to be included for example). OCSP_basic_add1_cert() adds a
5238 certificate to a basic response and OCSP_basic_sign() signs a basic
5239 response with various flags. New helper functions ASN1_TIME_check()
5240 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5241 (converts ASN1_TIME to GeneralizedTime).
5244 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5245 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5246 structure from a certificate. X509_pubkey_digest() digests the public_key
5247 contents: this is used in various key identifiers.
5250 *) Make sk_sort() tolerate a NULL argument.
5251 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5253 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5254 passed by the function are trusted implicitly. If any of them signed the
5255 response then it is assumed to be valid and is not verified.
5258 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5259 to data. This was previously part of the PKCS7 ASN1 code. This
5260 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5261 [Steve Henson, reported by Kenneth R. Robinette
5262 <support@securenetterm.com>]
5264 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5265 routines: without these tracing memory leaks is very painful.
5266 Fix leaks in PKCS12 and PKCS7 routines.
5269 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5270 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5271 effectively meant GeneralizedTime would never be used. Now it
5272 is initialised to -1 but X509_time_adj() now has to check the value
5273 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5274 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5275 [Steve Henson, reported by Kenneth R. Robinette
5276 <support@securenetterm.com>]
5278 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5279 result in a zero length in the ASN1_INTEGER structure which was
5280 not consistent with the structure when d2i_ASN1_INTEGER() was used
5281 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5282 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5283 where it did not print out a minus for negative ASN1_INTEGER.
5286 *) Add summary printout to ocsp utility. The various functions which
5287 convert status values to strings have been renamed to:
5288 OCSP_response_status_str(), OCSP_cert_status_str() and
5289 OCSP_crl_reason_str() and are no longer static. New options
5290 to verify nonce values and to disable verification. OCSP response
5291 printout format cleaned up.
5294 *) Add additional OCSP certificate checks. These are those specified
5295 in RFC2560. This consists of two separate checks: the CA of the
5296 certificate being checked must either be the OCSP signer certificate
5297 or the issuer of the OCSP signer certificate. In the latter case the
5298 OCSP signer certificate must contain the OCSP signing extended key
5299 usage. This check is performed by attempting to match the OCSP
5300 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5301 in the OCSP_CERTID structures of the response.
5304 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5305 and related routines. This uses the standard OpenSSL certificate
5306 verify routines to perform initial checks (just CA validity) and
5307 to obtain the certificate chain. Then additional checks will be
5308 performed on the chain. Currently the root CA is checked to see
5309 if it is explicitly trusted for OCSP signing. This is used to set
5310 a root CA as a global signing root: that is any certificate that
5311 chains to that CA is an acceptable OCSP signing certificate.
5314 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5315 extensions from a separate configuration file.
5316 As when reading extensions from the main configuration file,
5317 the '-extensions ...' option may be used for specifying the
5319 [Massimiliano Pala <madwolf@comune.modena.it>]
5321 *) New OCSP utility. Allows OCSP requests to be generated or
5322 read. The request can be sent to a responder and the output
5323 parsed, outputed or printed in text form. Not complete yet:
5324 still needs to check the OCSP response validity.
5327 *) New subcommands for 'openssl ca':
5328 'openssl ca -status <serial>' prints the status of the cert with
5329 the given serial number (according to the index file).
5330 'openssl ca -updatedb' updates the expiry status of certificates
5332 [Massimiliano Pala <madwolf@comune.modena.it>]
5334 *) New '-newreq-nodes' command option to CA.pl. This is like
5335 '-newreq', but calls 'openssl req' with the '-nodes' option
5336 so that the resulting key is not encrypted.
5337 [Damien Miller <djm@mindrot.org>]
5339 *) New configuration for the GNU Hurd.
5340 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5342 *) Initial code to implement OCSP basic response verify. This
5343 is currently incomplete. Currently just finds the signer's
5344 certificate and verifies the signature on the response.
5347 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5348 value of OPENSSLDIR. This is available via the new '-d' option
5349 to 'openssl version', and is also included in 'openssl version -a'.
5352 *) Allowing defining memory allocation callbacks that will be given
5353 file name and line number information in additional arguments
5354 (a const char* and an int). The basic functionality remains, as
5355 well as the original possibility to just replace malloc(),
5356 realloc() and free() by functions that do not know about these
5357 additional arguments. To register and find out the current
5358 settings for extended allocation functions, the following
5359 functions are provided:
5361 CRYPTO_set_mem_ex_functions
5362 CRYPTO_set_locked_mem_ex_functions
5363 CRYPTO_get_mem_ex_functions
5364 CRYPTO_get_locked_mem_ex_functions
5366 These work the same way as CRYPTO_set_mem_functions and friends.
5367 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5368 extended allocation function is enabled.
5369 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5370 a conventional allocation function is enabled.
5371 [Richard Levitte, Bodo Moeller]
5373 *) Finish off removing the remaining LHASH function pointer casts.
5374 There should no longer be any prototype-casting required when using
5375 the LHASH abstraction, and any casts that remain are "bugs". See
5376 the callback types and macros at the head of lhash.h for details
5377 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5380 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5381 If /dev/[u]random devices are not available or do not return enough
5382 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5384 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5385 /etc/entropy will be queried once each in this sequence, quering stops
5386 when enough entropy was collected without querying more sockets.
5389 *) Change the Unix RAND_poll() variant to be able to poll several
5390 random devices, as specified by DEVRANDOM, until a sufficient amount
5391 of data has been collected. We spend at most 10 ms on each file
5392 (select timeout) and read in non-blocking mode. DEVRANDOM now
5393 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5394 (previously it was just the string "/dev/urandom"), so on typical
5395 platforms the 10 ms delay will never occur.
5396 Also separate out the Unix variant to its own file, rand_unix.c.
5397 For VMS, there's a currently-empty rand_vms.c.
5400 *) Move OCSP client related routines to ocsp_cl.c. These
5401 provide utility functions which an application needing
5402 to issue a request to an OCSP responder and analyse the
5403 response will typically need: as opposed to those which an
5404 OCSP responder itself would need which will be added later.
5406 OCSP_request_sign() signs an OCSP request with an API similar
5407 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5408 response. OCSP_response_get1_basic() extracts basic response
5409 from response. OCSP_resp_find_status(): finds and extracts status
5410 information from an OCSP_CERTID structure (which will be created
5411 when the request structure is built). These are built from lower
5412 level functions which work on OCSP_SINGLERESP structures but
5413 wont normally be used unless the application wishes to examine
5414 extensions in the OCSP response for example.
5416 Replace nonce routines with a pair of functions.
5417 OCSP_request_add1_nonce() adds a nonce value and optionally
5418 generates a random value. OCSP_check_nonce() checks the
5419 validity of the nonce in an OCSP response.
5422 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5423 This doesn't copy the supplied OCSP_CERTID and avoids the
5424 need to free up the newly created id. Change return type
5425 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5426 This can then be used to add extensions to the request.
5427 Deleted OCSP_request_new(), since most of its functionality
5428 is now in OCSP_REQUEST_new() (and the case insensitive name
5429 clash) apart from the ability to set the request name which
5430 will be added elsewhere.
5433 *) Update OCSP API. Remove obsolete extensions argument from
5434 various functions. Extensions are now handled using the new
5435 OCSP extension code. New simple OCSP HTTP function which
5436 can be used to send requests and parse the response.
5439 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5440 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5441 uses the special reorder version of SET OF to sort the attributes
5442 and reorder them to match the encoded order. This resolves a long
5443 standing problem: a verify on a PKCS7 structure just after signing
5444 it used to fail because the attribute order did not match the
5445 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5446 it uses the received order. This is necessary to tolerate some broken
5447 software that does not order SET OF. This is handled by encoding
5448 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5449 to produce the required SET OF.
5452 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5453 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5454 files to get correct declarations of the ASN.1 item variables.
5457 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5458 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5459 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5460 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5461 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5462 ASN1_ITEM and no wrapper functions.
5465 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5466 replace the old function pointer based I/O routines. Change most of
5467 the *_d2i_bio() and *_d2i_fp() functions to use these.
5470 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5471 lines, recognice more "algorithms" that can be deselected, and make
5472 it complain about algorithm deselection that isn't recognised.
5475 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5476 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5477 to use new functions. Add NO_ASN1_OLD which can be set to remove
5478 some old style ASN1 functions: this can be used to determine if old
5479 code will still work when these eventually go away.
5482 *) New extension functions for OCSP structures, these follow the
5483 same conventions as certificates and CRLs.
5486 *) New function X509V3_add1_i2d(). This automatically encodes and
5487 adds an extension. Its behaviour can be customised with various
5488 flags to append, replace or delete. Various wrappers added for
5489 certifcates and CRLs.
5492 *) Fix to avoid calling the underlying ASN1 print routine when
5493 an extension cannot be parsed. Correct a typo in the
5494 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5497 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5498 entries for variables.
5501 *) Add functionality to apps/openssl.c for detecting locking
5502 problems: As the program is single-threaded, all we have
5503 to do is register a locking callback using an array for
5504 storing which locks are currently held by the program.
5507 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5508 SSL_get_ex_data_X509_STORE_idx(), which is used in
5509 ssl_verify_cert_chain() and thus can be called at any time
5510 during TLS/SSL handshakes so that thread-safety is essential.
5511 Unfortunately, the ex_data design is not at all suited
5512 for multi-threaded use, so it probably should be abolished.
5515 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5516 [Broadcom, tweaked and integrated by Geoff Thorpe]
5518 *) Move common extension printing code to new function
5519 X509V3_print_extensions(). Reorganise OCSP print routines and
5520 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5523 *) New function X509_signature_print() to remove duplication in some
5527 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5528 set (this was treated exactly the same as SET OF previously). This
5529 is used to reorder the STACK representing the structure to match the
5530 encoding. This will be used to get round a problem where a PKCS7
5531 structure which was signed could not be verified because the STACK
5532 order did not reflect the encoded order.
5535 *) Reimplement the OCSP ASN1 module using the new code.
5538 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5539 for its ASN1 operations. The old style function pointers still exist
5540 for now but they will eventually go away.
5543 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5544 completely replaces the old ASN1 functionality with a table driven
5545 encoder and decoder which interprets an ASN1_ITEM structure describing
5546 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5547 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5548 has also been converted to the new form.
5551 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5552 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5553 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5554 for negative moduli.
5557 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5558 of not touching the result's sign bit.
5561 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
5565 *) Changed the LHASH code to use prototypes for callbacks, and created
5566 macros to declare and implement thin (optionally static) functions
5567 that provide type-safety and avoid function pointer casting for the
5568 type-specific callbacks.
5571 *) Added Kerberos Cipher Suites to be used with TLS, as written in
5573 [Veers Staats <staatsvr@asc.hpc.mil>,
5574 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
5576 *) Reformat the FAQ so the different questions and answers can be divided
5577 in sections depending on the subject.
5580 *) Have the zlib compression code load ZLIB.DLL dynamically under
5584 *) New function BN_mod_sqrt for computing square roots modulo a prime
5585 (using the probabilistic Tonelli-Shanks algorithm unless
5586 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
5587 be handled deterministically).
5588 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5590 *) Make BN_mod_inverse faster by explicitly handling small quotients
5591 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5592 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5595 *) New function BN_kronecker.
5598 *) Fix BN_gcd so that it works on negative inputs; the result is
5599 positive unless both parameters are zero.
5600 Previously something reasonably close to an infinite loop was
5601 possible because numbers could be growing instead of shrinking
5602 in the implementation of Euclid's algorithm.
5605 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5606 sign of the number in question.
5608 Fix BN_is_word(a,w) to work correctly for w == 0.
5610 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5611 because its test if the absolute value of 'a' equals 'w'.
5612 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5613 it exists mostly for use in the implementations of BN_is_zero(),
5614 BN_is_one(), and BN_is_word().
5617 *) New function BN_swap.
5620 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5621 the exponentiation functions are more likely to produce reasonable
5622 results on negative inputs.
5625 *) Change BN_mod_mul so that the result is always non-negative.
5626 Previously, it could be negative if one of the factors was negative;
5627 I don't think anyone really wanted that behaviour.
5630 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5631 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5632 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5633 and add new functions:
5642 BN_mod_lshift1_quick
5646 These functions always generate non-negative results.
5648 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5649 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5651 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5652 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5653 be reduced modulo m.
5654 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5657 The following entry accidentily appeared in the CHANGES file
5658 distributed with OpenSSL 0.9.7. The modifications described in
5659 it do *not* apply to OpenSSL 0.9.7.
5661 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5662 was actually never needed) and in BN_mul(). The removal in BN_mul()
5663 required a small change in bn_mul_part_recursive() and the addition
5664 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5665 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5666 bn_sub_words() and bn_add_words() except they take arrays with
5671 *) In 'openssl passwd', verify passwords read from the terminal
5672 unless the '-salt' option is used (which usually means that
5673 verification would just waste user's time since the resulting
5674 hash is going to be compared with some given password hash)
5675 or the new '-noverify' option is used.
5677 This is an incompatible change, but it does not affect
5678 non-interactive use of 'openssl passwd' (passwords on the command
5679 line, '-stdin' option, '-in ...' option) and thus should not
5683 *) Remove all references to RSAref, since there's no more need for it.
5686 *) Make DSO load along a path given through an environment variable
5687 (SHLIB_PATH) with shl_load().
5690 *) Constify the ENGINE code as a result of BIGNUM constification.
5691 Also constify the RSA code and most things related to it. In a
5692 few places, most notable in the depth of the ASN.1 code, ugly
5693 casts back to non-const were required (to be solved at a later
5697 *) Make it so the openssl application has all engines loaded by default.
5700 *) Constify the BIGNUM routines a little more.
5703 *) Add the following functions:
5705 ENGINE_load_cswift()
5707 ENGINE_load_atalla()
5709 ENGINE_load_builtin_engines()
5711 That way, an application can itself choose if external engines that
5712 are built-in in OpenSSL shall ever be used or not. The benefit is
5713 that applications won't have to be linked with libdl or other dso
5714 libraries unless it's really needed.
5716 Changed 'openssl engine' to load all engines on demand.
5717 Changed the engine header files to avoid the duplication of some
5718 declarations (they differed!).
5721 *) 'openssl engine' can now list capabilities.
5724 *) Better error reporting in 'openssl engine'.
5727 *) Never call load_dh_param(NULL) in s_server.
5730 *) Add engine application. It can currently list engines by name and
5731 identity, and test if they are actually available.
5734 *) Improve RPM specification file by forcing symbolic linking and making
5735 sure the installed documentation is also owned by root.root.
5736 [Damien Miller <djm@mindrot.org>]
5738 *) Give the OpenSSL applications more possibilities to make use of
5739 keys (public as well as private) handled by engines.
5742 *) Add OCSP code that comes from CertCo.
5745 *) Add VMS support for the Rijndael code.
5748 *) Added untested support for Nuron crypto accelerator.
5751 *) Add support for external cryptographic devices. This code was
5752 previously distributed separately as the "engine" branch.
5753 [Geoff Thorpe, Richard Levitte]
5755 *) Rework the filename-translation in the DSO code. It is now possible to
5756 have far greater control over how a "name" is turned into a filename
5757 depending on the operating environment and any oddities about the
5758 different shared library filenames on each system.
5761 *) Support threads on FreeBSD-elf in Configure.
5764 *) Fix for SHA1 assembly problem with MASM: it produces
5765 warnings about corrupt line number information when assembling
5766 with debugging information. This is caused by the overlapping
5768 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5771 NCONF_get_number() has no error checking at all. As a replacement,
5772 NCONF_get_number_e() is defined (_e for "error checking") and is
5773 promoted strongly. The old NCONF_get_number is kept around for
5774 binary backward compatibility.
5775 Make it possible for methods to load from something other than a BIO,
5776 by providing a function pointer that is given a name instead of a BIO.
5777 For example, this could be used to load configuration data from an
5781 *) Fix for non blocking accept BIOs. Added new I/O special reason
5782 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5783 with non blocking I/O was not possible because no retry code was
5784 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5788 *) Added the beginnings of Rijndael support.
5791 *) Fix for bug in DirectoryString mask setting. Add support for
5792 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5793 to allow certificate printing to more controllable, additional
5794 'certopt' option to 'x509' to allow new printing options to be
5798 *) Clean old EAY MD5 hack from e_os.h.
5801 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5803 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5804 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5805 [Joe Orton, Steve Henson]
5807 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5809 *) Fix additional bug revealed by the NISCC test suite:
5811 Stop bug triggering large recursion when presented with
5812 certain ASN.1 tags (CVE-2003-0851)
5815 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5817 *) Fix various bugs revealed by running the NISCC test suite:
5819 Stop out of bounds reads in the ASN1 code when presented with
5820 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5822 If verify callback ignores invalid public key errors don't try to check
5823 certificate signature with the NULL public key.
5827 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5828 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5832 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5833 extra data after the compression methods not only for TLS 1.0
5834 but also for SSL 3.0 (as required by the specification).
5835 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5837 *) Change X509_certificate_type() to mark the key as exported/exportable
5838 when it's 512 *bits* long, not 512 bytes.
5841 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5843 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5844 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5845 a protocol version number mismatch like a decryption error
5846 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5849 *) Turn on RSA blinding by default in the default implementation
5850 to avoid a timing attack. Applications that don't want it can call
5851 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5852 They would be ill-advised to do so in most cases.
5853 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5855 *) Change RSA blinding code so that it works when the PRNG is not
5856 seeded (in this case, the secret RSA exponent is abused as
5857 an unpredictable seed -- if it is not unpredictable, there
5858 is no point in blinding anyway). Make RSA blinding thread-safe
5859 by remembering the creator's thread ID in rsa->blinding and
5860 having all other threads use local one-time blinding factors
5861 (this requires more computation than sharing rsa->blinding, but
5862 avoids excessive locking; and if an RSA object is not shared
5863 between threads, blinding will still be very fast).
5866 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5868 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5869 via timing by performing a MAC computation even if incorrrect
5870 block cipher padding has been found. This is a countermeasure
5871 against active attacks where the attacker has to distinguish
5872 between bad padding and a MAC verification error. (CVE-2003-0078)
5874 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5875 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5876 Martin Vuagnoux (EPFL, Ilion)]
5878 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5880 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5881 memory from it's contents. This is done with a counter that will
5882 place alternating values in each byte. This can be used to solve
5883 two issues: 1) the removal of calls to memset() by highly optimizing
5884 compilers, and 2) cleansing with other values than 0, since those can
5885 be read through on certain media, for example a swap space on disk.
5888 *) Bugfix: client side session caching did not work with external caching,
5889 because the session->cipher setting was not restored when reloading
5890 from the external cache. This problem was masked, when
5891 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5892 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5895 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5896 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5897 [Zeev Lieber <zeev-l@yahoo.com>]
5899 *) Undo an undocumented change introduced in 0.9.6e which caused
5900 repeated calls to OpenSSL_add_all_ciphers() and
5901 OpenSSL_add_all_digests() to be ignored, even after calling
5905 *) Change the default configuration reader to deal with last line not
5906 being properly terminated.
5909 *) Change X509_NAME_cmp() so it applies the special rules on handling
5910 DN values that are of type PrintableString, as well as RDNs of type
5911 emailAddress where the value has the type ia5String.
5912 [stefank@valicert.com via Richard Levitte]
5914 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5915 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5916 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5917 the bitwise-OR of the two for use by the majority of applications
5918 wanting this behaviour, and update the docs. The documented
5919 behaviour and actual behaviour were inconsistent and had been
5920 changing anyway, so this is more a bug-fix than a behavioural
5922 [Geoff Thorpe, diagnosed by Nadav Har'El]
5924 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5925 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5928 *) Fix initialization code race conditions in
5929 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5930 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5931 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5932 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5933 ssl2_get_cipher_by_char(),
5934 ssl3_get_cipher_by_char().
5935 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5937 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5938 the cached sessions are flushed, as the remove_cb() might use ex_data
5939 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5940 (see [openssl.org #212]).
5941 [Geoff Thorpe, Lutz Jaenicke]
5943 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5944 length, instead of the encoding length to d2i_ASN1_OBJECT.
5947 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5949 *) [In 0.9.6g-engine release:]
5950 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5951 [Lynn Gazis <lgazis@rainbow.com>]
5953 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5955 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5956 and get fix the header length calculation.
5957 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5958 Alon Kantor <alonk@checkpoint.com> (and others),
5961 *) Use proper error handling instead of 'assertions' in buffer
5962 overflow checks added in 0.9.6e. This prevents DoS (the
5963 assertions could call abort()).
5964 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5966 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5968 *) Add various sanity checks to asn1_get_length() to reject
5969 the ASN1 length bytes if they exceed sizeof(long), will appear
5970 negative or the content length exceeds the length of the
5972 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5974 *) Fix cipher selection routines: ciphers without encryption had no flags
5975 for the cipher strength set and where therefore not handled correctly
5976 by the selection routines (PR #130).
5979 *) Fix EVP_dsa_sha macro.
5983 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5984 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5985 that was added in OpenSSL 0.9.6d.
5987 As the countermeasure turned out to be incompatible with some
5988 broken SSL implementations, the new option is part of SSL_OP_ALL.
5989 SSL_OP_ALL is usually employed when compatibility with weird SSL
5990 implementations is desired (e.g. '-bugs' option to 's_client' and
5991 's_server'), so the new option is automatically set in many
5995 *) Changes in security patch:
5997 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5998 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5999 Air Force Materiel Command, USAF, under agreement number
6002 *) Add various sanity checks to asn1_get_length() to reject
6003 the ASN1 length bytes if they exceed sizeof(long), will appear
6004 negative or the content length exceeds the length of the
6005 supplied buffer. (CVE-2002-0659)
6006 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
6008 *) Assertions for various potential buffer overflows, not known to
6010 [Ben Laurie (CHATS)]
6012 *) Various temporary buffers to hold ASCII versions of integers were
6013 too small for 64 bit platforms. (CVE-2002-0655)
6014 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
6016 *) Remote buffer overflow in SSL3 protocol - an attacker could
6017 supply an oversized session ID to a client. (CVE-2002-0656)
6018 [Ben Laurie (CHATS)]
6020 *) Remote buffer overflow in SSL2 protocol - an attacker could
6021 supply an oversized client master key. (CVE-2002-0656)
6022 [Ben Laurie (CHATS)]
6024 Changes between 0.9.6c and 0.9.6d [9 May 2002]
6026 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
6027 encoded as NULL) with id-dsa-with-sha1.
6028 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
6030 *) Check various X509_...() return values in apps/req.c.
6031 [Nils Larsch <nla@trustcenter.de>]
6033 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
6034 an end-of-file condition would erronously be flagged, when the CRLF
6035 was just at the end of a processed block. The bug was discovered when
6036 processing data through a buffering memory BIO handing the data to a
6037 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
6038 <ptsekov@syntrex.com> and Nedelcho Stanev.
6041 *) Implement a countermeasure against a vulnerability recently found
6042 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
6043 before application data chunks to avoid the use of known IVs
6044 with data potentially chosen by the attacker.
6047 *) Fix length checks in ssl3_get_client_hello().
6050 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
6051 to prevent ssl3_read_internal() from incorrectly assuming that
6052 ssl3_read_bytes() found application data while handshake
6053 processing was enabled when in fact s->s3->in_read_app_data was
6054 merely automatically cleared during the initial handshake.
6055 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
6057 *) Fix object definitions for Private and Enterprise: they were not
6058 recognized in their shortname (=lowercase) representation. Extend
6059 obj_dat.pl to issue an error when using undefined keywords instead
6060 of silently ignoring the problem (Svenning Sorensen
6061 <sss@sss.dnsalias.net>).
6064 *) Fix DH_generate_parameters() so that it works for 'non-standard'
6065 generators, i.e. generators other than 2 and 5. (Previously, the
6066 code did not properly initialise the 'add' and 'rem' values to
6067 BN_generate_prime().)
6069 In the new general case, we do not insist that 'generator' is
6070 actually a primitive root: This requirement is rather pointless;
6071 a generator of the order-q subgroup is just as good, if not
6075 *) Map new X509 verification errors to alerts. Discovered and submitted by
6076 Tom Wu <tom@arcot.com>.
6079 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
6080 returning non-zero before the data has been completely received
6081 when using non-blocking I/O.
6082 [Bodo Moeller; problem pointed out by John Hughes]
6084 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
6085 [Ben Laurie, Lutz Jaenicke]
6087 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
6088 Yoram Zahavi <YoramZ@gilian.com>).
6091 *) Add information about CygWin 1.3 and on, and preserve proper
6092 configuration for the versions before that.
6093 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6095 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
6096 check whether we deal with a copy of a session and do not delete from
6097 the cache in this case. Problem reported by "Izhar Shoshani Levi"
6098 <izhar@checkpoint.com>.
6101 *) Do not store session data into the internal session cache, if it
6102 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
6103 flag is set). Proposed by Aslam <aslam@funk.com>.
6106 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
6110 *) [In 0.9.6d-engine release:]
6111 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6112 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6114 *) Add the configuration target linux-s390x.
6115 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
6117 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
6118 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
6119 variable as an indication that a ClientHello message has been
6120 received. As the flag value will be lost between multiple
6121 invocations of ssl3_accept when using non-blocking I/O, the
6122 function may not be aware that a handshake has actually taken
6123 place, thus preventing a new session from being added to the
6126 To avoid this problem, we now set s->new_session to 2 instead of
6127 using a local variable.
6128 [Lutz Jaenicke, Bodo Moeller]
6130 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
6131 if the SSL_R_LENGTH_MISMATCH error is detected.
6132 [Geoff Thorpe, Bodo Moeller]
6134 *) New 'shared_ldflag' column in Configure platform table.
6137 *) Fix EVP_CIPHER_mode macro.
6138 ["Dan S. Camper" <dan@bti.net>]
6140 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
6141 type, we must throw them away by setting rr->length to 0.
6142 [D P Chang <dpc@qualys.com>]
6144 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6146 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6147 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6148 worked incorrectly for those cases where range = 10..._2 and
6149 3*range is two bits longer than range.)
6152 *) Only add signing time to PKCS7 structures if it is not already
6156 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6157 OBJ_ld_ce should be OBJ_id_ce.
6158 Also some ip-pda OIDs in crypto/objects/objects.txt were
6159 incorrect (cf. RFC 3039).
6160 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6162 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6163 returns early because it has nothing to do.
6164 [Andy Schneider <andy.schneider@bjss.co.uk>]
6166 *) [In 0.9.6c-engine release:]
6167 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6168 [Andy Schneider <andy.schneider@bjss.co.uk>]
6170 *) [In 0.9.6c-engine release:]
6171 Add support for Cryptographic Appliance's keyserver technology.
6172 (Use engine 'keyclient')
6173 [Cryptographic Appliances and Geoff Thorpe]
6175 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6176 is called via tools/c89.sh because arguments have to be
6177 rearranged (all '-L' options must appear before the first object
6179 [Richard Shapiro <rshapiro@abinitio.com>]
6181 *) [In 0.9.6c-engine release:]
6182 Add support for Broadcom crypto accelerator cards, backported
6184 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6186 *) [In 0.9.6c-engine release:]
6187 Add support for SureWare crypto accelerator cards from
6188 Baltimore Technologies. (Use engine 'sureware')
6189 [Baltimore Technologies and Mark Cox]
6191 *) [In 0.9.6c-engine release:]
6192 Add support for crypto accelerator cards from Accelerated
6193 Encryption Processing, www.aep.ie. (Use engine 'aep')
6194 [AEP Inc. and Mark Cox]
6196 *) Add a configuration entry for gcc on UnixWare.
6197 [Gary Benson <gbenson@redhat.com>]
6199 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6200 messages are stored in a single piece (fixed-length part and
6201 variable-length part combined) and fix various bugs found on the way.
6204 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6205 instead. BIO_gethostbyname() does not know what timeouts are
6206 appropriate, so entries would stay in cache even when they have
6208 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6210 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6211 faced with a pathologically small ClientHello fragment that does
6212 not contain client_version: Instead of aborting with an error,
6213 simply choose the highest available protocol version (i.e.,
6214 TLS 1.0 unless it is disabled). In practice, ClientHello
6215 messages are never sent like this, but this change gives us
6216 strictly correct behaviour at least for TLS.
6219 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6220 never resets s->method to s->ctx->method when called from within
6221 one of the SSL handshake functions.
6222 [Bodo Moeller; problem pointed out by Niko Baric]
6224 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6225 (sent using the client's version number) if client_version is
6226 smaller than the protocol version in use. Also change
6227 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6228 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6229 the client will at least see that alert.
6232 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6236 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6237 client receives HelloRequest while in a handshake.
6238 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6240 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6241 should end in 'break', not 'goto end' which circuments various
6242 cleanups done in state SSL_ST_OK. But session related stuff
6243 must be disabled for SSL_ST_OK in the case that we just sent a
6246 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6247 before just sending a HelloRequest.
6248 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6250 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6251 reveal whether illegal block cipher padding was found or a MAC
6252 verification error occured. (Neither SSLerr() codes nor alerts
6253 are directly visible to potential attackers, but the information
6254 may leak via logfiles.)
6256 Similar changes are not required for the SSL 2.0 implementation
6257 because the number of padding bytes is sent in clear for SSL 2.0,
6258 and the extra bytes are just ignored. However ssl/s2_pkt.c
6259 failed to verify that the purported number of padding bytes is in
6263 *) Add OpenUNIX-8 support including shared libraries
6264 (Boyd Lynn Gerber <gerberb@zenez.com>).
6267 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6268 'wristwatch attack' using huge encoding parameters (cf.
6269 James H. Manger's CRYPTO 2001 paper). Note that the
6270 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6271 encoding parameters and hence was not vulnerable.
6274 *) BN_sqr() bug fix.
6275 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6277 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6278 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6279 followed by modular reduction.
6280 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6282 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6283 equivalent based on BN_pseudo_rand() instead of BN_rand().
6286 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6287 This function was broken, as the check for a new client hello message
6288 to handle SGC did not allow these large messages.
6289 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6292 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6295 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6296 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6299 *) Rework the configuration and shared library support for Tru64 Unix.
6300 The configuration part makes use of modern compiler features and
6301 still retains old compiler behavior for those that run older versions
6302 of the OS. The shared library support part includes a variant that
6303 uses the RPATH feature, and is available through the special
6304 configuration target "alpha-cc-rpath", which will never be selected
6306 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6308 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6309 with the same message size as in ssl3_get_certificate_request().
6310 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6311 messages might inadvertently be reject as too long.
6312 [Petr Lampa <lampa@fee.vutbr.cz>]
6314 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6317 *) Modified SSL library such that the verify_callback that has been set
6318 specificly for an SSL object with SSL_set_verify() is actually being
6319 used. Before the change, a verify_callback set with this function was
6320 ignored and the verify_callback() set in the SSL_CTX at the time of
6321 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6322 to allow the necessary settings.
6325 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6326 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6327 done automatically (in contradiction to the requirements of the C
6328 standard). This made problems when used from OpenSSH.
6331 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6332 dh->length and always used
6334 BN_rand_range(priv_key, dh->p).
6336 BN_rand_range() is not necessary for Diffie-Hellman, and this
6337 specific range makes Diffie-Hellman unnecessarily inefficient if
6338 dh->length (recommended exponent length) is much smaller than the
6339 length of dh->p. We could use BN_rand_range() if the order of
6340 the subgroup was stored in the DH structure, but we only have
6345 BN_rand(priv_key, l, ...)
6347 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6353 RSA_eay_public_encrypt
6354 RSA_eay_private_decrypt
6355 RSA_eay_private_encrypt (signing)
6356 RSA_eay_public_decrypt (signature verification)
6358 (default implementations for RSA_public_encrypt,
6359 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6360 always reject numbers >= n.
6363 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6364 to synchronize access to 'locking_thread'. This is necessary on
6365 systems where access to 'locking_thread' (an 'unsigned long'
6366 variable) is not atomic.
6369 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6370 *before* setting the 'crypto_lock_rand' flag. The previous code had
6371 a race condition if 0 is a valid thread ID.
6372 [Travis Vitek <vitek@roguewave.com>]
6374 *) Add support for shared libraries under Irix.
6375 [Albert Chin-A-Young <china@thewrittenword.com>]
6377 *) Add configuration option to build on Linux on both big-endian and
6379 [Ralf Baechle <ralf@uni-koblenz.de>]
6381 *) Add the possibility to create shared libraries on HP-UX.
6384 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6386 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6387 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6388 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6389 PRNG state recovery was possible based on the output of
6390 one PRNG request appropriately sized to gain knowledge on
6391 'md' followed by enough consecutive 1-byte PRNG requests
6392 to traverse all of 'state'.
6394 1. When updating 'md_local' (the current thread's copy of 'md')
6395 during PRNG output generation, hash all of the previous
6396 'md_local' value, not just the half used for PRNG output.
6398 2. Make the number of bytes from 'state' included into the hash
6399 independent from the number of PRNG bytes requested.
6401 The first measure alone would be sufficient to avoid
6402 Markku-Juhani's attack. (Actually it had never occurred
6403 to me that the half of 'md_local' used for chaining was the
6404 half from which PRNG output bytes were taken -- I had always
6405 assumed that the secret half would be used.) The second
6406 measure makes sure that additional data from 'state' is never
6407 mixed into 'md_local' in small portions; this heuristically
6408 further strengthens the PRNG.
6411 *) Fix crypto/bn/asm/mips3.s.
6414 *) When only the key is given to "enc", the IV is undefined. Print out
6415 an error message in this case.
6418 *) Handle special case when X509_NAME is empty in X509 printing routines.
6421 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6422 positive and less than q.
6425 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6426 used: it isn't thread safe and the add_lock_callback should handle
6428 [Paul Rose <Paul.Rose@bridge.com>]
6430 *) Verify that incoming data obeys the block size in
6431 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6435 [Ulf Möller, Bodo Möller]
6437 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6438 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6439 when fixing the server behaviour for backwards-compatible 'client
6440 hello' messages. (Note that the attack is impractical against
6441 SSL 3.0 and TLS 1.0 anyway because length and version checking
6442 means that the probability of guessing a valid ciphertext is
6443 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6446 Before 0.9.5, the countermeasure (hide the error by generating a
6447 random 'decryption result') did not work properly because
6448 ERR_clear_error() was missing, meaning that SSL_get_error() would
6449 detect the supposedly ignored error.
6451 Both problems are now fixed.
6454 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6455 (previously it was 1024).
6458 *) Fix for compatibility mode trust settings: ignore trust settings
6459 unless some valid trust or reject settings are present.
6462 *) Fix for blowfish EVP: its a variable length cipher.
6465 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6466 parameters in DSA public key structures and return an error in the
6467 DSA routines if parameters are absent.
6470 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6471 in the current directory if neither $RANDFILE nor $HOME was set.
6472 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6473 caused some confusion to Windows users who haven't defined $HOME.
6474 Thus RAND_file_name() is changed again: e_os.h can define a
6475 DEFAULT_HOME, which will be used if $HOME is not set.
6476 For Windows, we use "C:"; on other platforms, we still require
6477 environment variables.
6479 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6480 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6481 having multiple threads call RAND_poll() concurrently.
6484 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6485 combination of a flag and a thread ID variable.
6486 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6487 flag), *other* threads can enter ssleay_add_bytes without obeying
6488 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6489 that they do not hold after the first thread unsets add_do_not_lock).
6492 *) Change bctest again: '-x' expressions are not available in all
6496 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6498 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6499 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6501 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6502 the default extension for executables, if any. Also, make the perl
6503 scripts that use symlink() to test if it really exists and use "cp"
6504 if it doesn't. All this made OpenSSL compilable and installable in
6508 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6509 If SEQUENCE is length is indefinite just set c->slen to the total
6510 amount of data available.
6511 [Steve Henson, reported by shige@FreeBSD.org]
6512 [This change does not apply to 0.9.7.]
6514 *) Change bctest to avoid here-documents inside command substitution
6515 (workaround for FreeBSD /bin/sh bug).
6516 For compatibility with Ultrix, avoid shell functions (introduced
6517 in the bctest version that searches along $PATH).
6520 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6521 with des_encrypt() defined on some operating systems, like Solaris
6525 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6526 On the Importance of Eliminating Errors in Cryptographic
6527 Computations, J. Cryptology 14 (2001) 2, 101-119,
6528 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6531 *) MIPS assembler BIGNUM division bug fix.
6534 *) Disabled incorrect Alpha assembler code.
6537 *) Fix PKCS#7 decode routines so they correctly update the length
6538 after reading an EOC for the EXPLICIT tag.
6540 [This change does not apply to 0.9.7.]
6542 *) Fix bug in PKCS#12 key generation routines. This was triggered
6543 if a 3DES key was generated with a 0 initial byte. Include
6544 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6545 (but broken) behaviour.
6548 *) Enhance bctest to search for a working bc along $PATH and print
6550 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6552 *) Fix memory leaks in err.c: free err_data string if necessary;
6553 don't write to the wrong index in ERR_set_error_data.
6556 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6560 *) Replace rdtsc with _emit statements for VC++ version 5.
6561 [Jeremy Cooper <jeremy@baymoo.org>]
6563 *) Make it possible to reuse SSLv2 sessions.
6566 *) In copy_email() check for >= 0 as a return value for
6567 X509_NAME_get_index_by_NID() since 0 is a valid index.
6568 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
6570 *) Avoid coredump with unsupported or invalid public keys by checking if
6571 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
6572 PKCS7_verify() fails with non detached data.
6575 *) Don't use getenv in library functions when run as setuid/setgid.
6576 New function OPENSSL_issetugid().
6579 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
6580 due to incorrect handling of multi-threading:
6582 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
6584 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
6586 3. Count how many times MemCheck_off() has been called so that
6587 nested use can be treated correctly. This also avoids
6588 inband-signalling in the previous code (which relied on the
6589 assumption that thread ID 0 is impossible).
6592 *) Add "-rand" option also to s_client and s_server.
6595 *) Fix CPU detection on Irix 6.x.
6596 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6597 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6599 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6602 [This change does not apply to 0.9.7.]
6604 *) Use the cached encoding of an X509_NAME structure rather than
6605 copying it. This is apparently the reason for the libsafe "errors"
6606 but the code is actually correct.
6609 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6610 Bleichenbacher's DSA attack.
6611 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6612 to be set and top=0 forces the highest bit to be set; top=-1 is new
6613 and leaves the highest bit random.
6614 [Ulf Moeller, Bodo Moeller]
6616 *) In the NCONF_...-based implementations for CONF_... queries
6617 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6618 a temporary CONF structure with the data component set to NULL
6619 (which gives segmentation faults in lh_retrieve).
6620 Instead, use NULL for the CONF pointer in CONF_get_string and
6621 CONF_get_number (which may use environment variables) and directly
6622 return NULL from CONF_get_section.
6625 *) Fix potential buffer overrun for EBCDIC.
6628 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6629 keyUsage if basicConstraints absent for a CA.
6632 *) Make SMIME_write_PKCS7() write mail header values with a format that
6633 is more generally accepted (no spaces before the semicolon), since
6634 some programs can't parse those values properly otherwise. Also make
6635 sure BIO's that break lines after each write do not create invalid
6639 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6640 macros previously used would not encode an empty SEQUENCE OF
6641 and break the signature.
6643 [This change does not apply to 0.9.7.]
6645 *) Zero the premaster secret after deriving the master secret in
6649 *) Add some EVP_add_digest_alias registrations (as found in
6650 OpenSSL_add_all_digests()) to SSL_library_init()
6651 aka OpenSSL_add_ssl_algorithms(). This provides improved
6652 compatibility with peers using X.509 certificates
6653 with unconventional AlgorithmIdentifier OIDs.
6656 *) Fix for Irix with NO_ASM.
6657 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6659 *) ./config script fixes.
6660 [Ulf Moeller, Richard Levitte]
6662 *) Fix 'openssl passwd -1'.
6665 *) Change PKCS12_key_gen_asc() so it can cope with non null
6666 terminated strings whose length is passed in the passlen
6667 parameter, for example from PEM callbacks. This was done
6668 by adding an extra length parameter to asc2uni().
6669 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6671 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6672 call failed, free the DSA structure.
6675 *) Fix to uni2asc() to cope with zero length Unicode strings.
6676 These are present in some PKCS#12 files.
6679 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6680 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6681 when writing a 32767 byte record.
6682 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6684 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6685 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6687 (RSA objects have a reference count access to which is protected
6688 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6689 so they are meant to be shared between threads.)
6690 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6691 "Reddie, Steven" <Steven.Reddie@ca.com>]
6693 *) Fix a deadlock in CRYPTO_mem_leaks().
6696 *) Use better test patterns in bntest.
6699 *) rand_win.c fix for Borland C.
6702 *) BN_rshift bugfix for n == 0.
6705 *) Add a 'bctest' script that checks for some known 'bc' bugs
6706 so that 'make test' does not abort just because 'bc' is broken.
6709 *) Store verify_result within SSL_SESSION also for client side to
6710 avoid potential security hole. (Re-used sessions on the client side
6711 always resulted in verify_result==X509_V_OK, not using the original
6712 result of the server certificate verification.)
6715 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6716 SSL3_RT_APPLICATION_DATA, return 0.
6717 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6721 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6722 releases, have been re-implemented by renaming the previous
6723 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6724 and ssl3_read_internal, respectively, and adding 'peek' parameters
6725 to them. The new ssl[23]_{read,peek} functions are calls to
6726 ssl[23]_read_internal with the 'peek' flag set appropriately.
6727 A 'peek' parameter has also been added to ssl3_read_bytes, which
6728 does the actual work for ssl3_read_internal.
6731 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6732 the method-specific "init()" handler. Also clean up ex_data after
6733 calling the method-specific "finish()" handler. Previously, this was
6734 happening the other way round.
6737 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6738 The previous value, 12, was not always sufficient for BN_mod_exp().
6741 *) Make sure that shared libraries get the internal name engine with
6742 the full version number and not just 0. This should mark the
6743 shared libraries as not backward compatible. Of course, this should
6744 be changed again when we can guarantee backward binary compatibility.
6747 *) Fix typo in get_cert_by_subject() in by_dir.c
6748 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6750 *) Rework the system to generate shared libraries:
6752 - Make note of the expected extension for the shared libraries and
6753 if there is a need for symbolic links from for example libcrypto.so.0
6754 to libcrypto.so.0.9.7. There is extended info in Configure for
6757 - Make as few rebuilds of the shared libraries as possible.
6759 - Still avoid linking the OpenSSL programs with the shared libraries.
6761 - When installing, install the shared libraries separately from the
6765 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6767 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6768 and not in SSL_clear because the latter is also used by the
6769 accept/connect functions; previously, the settings made by
6770 SSL_set_read_ahead would be lost during the handshake.
6771 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6773 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6774 Previously, it would create entries for disableed algorithms no
6778 *) Added several new manual pages for SSL_* function.
6781 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6783 *) In ssl23_get_client_hello, generate an error message when faced
6784 with an initial SSL 3.0/TLS record that is too small to contain the
6785 first two bytes of the ClientHello message, i.e. client_version.
6786 (Note that this is a pathologic case that probably has never happened
6787 in real life.) The previous approach was to use the version number
6788 from the record header as a substitute; but our protocol choice
6789 should not depend on that one because it is not authenticated
6790 by the Finished messages.
6793 *) More robust randomness gathering functions for Windows.
6794 [Jeffrey Altman <jaltman@columbia.edu>]
6796 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6797 not set then we don't setup the error code for issuer check errors
6798 to avoid possibly overwriting other errors which the callback does
6799 handle. If an application does set the flag then we assume it knows
6800 what it is doing and can handle the new informational codes
6804 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6805 a general "ANY" type, as such it should be able to decode anything
6806 including tagged types. However it didn't check the class so it would
6807 wrongly interpret tagged types in the same way as their universal
6808 counterpart and unknown types were just rejected. Changed so that the
6809 tagged and unknown types are handled in the same way as a SEQUENCE:
6810 that is the encoding is stored intact. There is also a new type
6811 "V_ASN1_OTHER" which is used when the class is not universal, in this
6812 case we have no idea what the actual type is so we just lump them all
6816 *) On VMS, stdout may very well lead to a file that is written to
6817 in a record-oriented fashion. That means that every write() will
6818 write a separate record, which will be read separately by the
6819 programs trying to read from it. This can be very confusing.
6821 The solution is to put a BIO filter in the way that will buffer
6822 text until a linefeed is reached, and then write everything a
6823 line at a time, so every record written will be an actual line,
6824 not chunks of lines and not (usually doesn't happen, but I've
6825 seen it once) several lines in one record. BIO_f_linebuffer() is
6828 Currently, it's a VMS-only method, because that's where it has
6829 been tested well enough.
6832 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6833 it can return incorrect results.
6834 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6835 but it was in 0.9.6-beta[12].)
6838 *) Disable the check for content being present when verifying detached
6839 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6840 include zero length content when signing messages.
6843 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6844 BIO_ctrl (for BIO pairs).
6847 *) Add DSO method for VMS.
6850 *) Bug fix: Montgomery multiplication could produce results with the
6854 *) Add RPM specification openssl.spec and modify it to build three
6855 packages. The default package contains applications, application
6856 documentation and run-time libraries. The devel package contains
6857 include files, static libraries and function documentation. The
6858 doc package contains the contents of the doc directory. The original
6859 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6862 *) Add a large number of documentation files for many SSL routines.
6863 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6865 *) Add a configuration entry for Sony News 4.
6866 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6868 *) Don't set the two most significant bits to one when generating a
6869 random number < q in the DSA library.
6872 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6873 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6874 the underlying transport is blocking) if a handshake took place.
6875 (The default behaviour is needed by applications such as s_client
6876 and s_server that use select() to determine when to use SSL_read;
6877 but for applications that know in advance when to expect data, it
6878 just makes things more complicated.)
6881 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6885 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6886 work better on such systems.
6887 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6889 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6890 Update PKCS12_parse() so it copies the friendlyName and the
6891 keyid to the certificates aux info.
6894 *) Fix bug in PKCS7_verify() which caused an infinite loop
6895 if there was more than one signature.
6896 [Sven Uszpelkat <su@celocom.de>]
6898 *) Major change in util/mkdef.pl to include extra information
6899 about each symbol, as well as presentig variables as well
6900 as functions. This change means that there's n more need
6901 to rebuild the .num files when some algorithms are excluded.
6904 *) Allow the verify time to be set by an application,
6905 rather than always using the current time.
6908 *) Phase 2 verify code reorganisation. The certificate
6909 verify code now looks up an issuer certificate by a
6910 number of criteria: subject name, authority key id
6911 and key usage. It also verifies self signed certificates
6912 by the same criteria. The main comparison function is
6913 X509_check_issued() which performs these checks.
6915 Lot of changes were necessary in order to support this
6916 without completely rewriting the lookup code.
6918 Authority and subject key identifier are now cached.
6920 The LHASH 'certs' is X509_STORE has now been replaced
6921 by a STACK_OF(X509_OBJECT). This is mainly because an
6922 LHASH can't store or retrieve multiple objects with
6923 the same hash value.
6925 As a result various functions (which were all internal
6926 use only) have changed to handle the new X509_STORE
6927 structure. This will break anything that messed round
6928 with X509_STORE internally.
6930 The functions X509_STORE_add_cert() now checks for an
6931 exact match, rather than just subject name.
6933 The X509_STORE API doesn't directly support the retrieval
6934 of multiple certificates matching a given criteria, however
6935 this can be worked round by performing a lookup first
6936 (which will fill the cache with candidate certificates)
6937 and then examining the cache for matches. This is probably
6938 the best we can do without throwing out X509_LOOKUP
6939 entirely (maybe later...).
6941 The X509_VERIFY_CTX structure has been enhanced considerably.
6943 All certificate lookup operations now go via a get_issuer()
6944 callback. Although this currently uses an X509_STORE it
6945 can be replaced by custom lookups. This is a simple way
6946 to bypass the X509_STORE hackery necessary to make this
6947 work and makes it possible to use more efficient techniques
6948 in future. A very simple version which uses a simple
6949 STACK for its trusted certificate store is also provided
6950 using X509_STORE_CTX_trusted_stack().
6952 The verify_cb() and verify() callbacks now have equivalents
6953 in the X509_STORE_CTX structure.
6955 X509_STORE_CTX also has a 'flags' field which can be used
6956 to customise the verify behaviour.
6959 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6960 excludes S/MIME capabilities.
6963 *) When a certificate request is read in keep a copy of the
6964 original encoding of the signed data and use it when outputing
6965 again. Signatures then use the original encoding rather than
6966 a decoded, encoded version which may cause problems if the
6967 request is improperly encoded.
6970 *) For consistency with other BIO_puts implementations, call
6971 buffer_write(b, ...) directly in buffer_puts instead of calling
6974 In BIO_puts, increment b->num_write as in BIO_write.
6975 [Peter.Sylvester@EdelWeb.fr]
6977 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6978 BN_zero, we may not return a BIGNUM with an array consisting of
6982 *) Avoid calling abort() from within the library when problems are
6983 detected, except if preprocessor symbols have been defined
6984 (such as REF_CHECK, BN_DEBUG etc.).
6987 *) New openssl application 'rsautl'. This utility can be
6988 used for low level RSA operations. DER public key
6989 BIO/fp routines also added.
6992 *) New Configure entry and patches for compiling on QNX 4.
6993 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6995 *) A demo state-machine implementation was sponsored by
6996 Nuron (http://www.nuron.com/) and is now available in
6997 demos/state_machine.
7000 *) New options added to the 'dgst' utility for signature
7001 generation and verification.
7004 *) Unrecognized PKCS#7 content types are now handled via a
7005 catch all ASN1_TYPE structure. This allows unsupported
7006 types to be stored as a "blob" and an application can
7007 encode and decode it manually.
7010 *) Fix various signed/unsigned issues to make a_strex.c
7012 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
7014 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
7015 length if passed a buffer. ASN1_INTEGER_to_BN failed
7016 if passed a NULL BN and its argument was negative.
7017 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
7019 *) Modification to PKCS#7 encoding routines to output definite
7020 length encoding. Since currently the whole structures are in
7021 memory there's not real point in using indefinite length
7022 constructed encoding. However if OpenSSL is compiled with
7023 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
7026 *) Added BIO_vprintf() and BIO_vsnprintf().
7029 *) Added more prefixes to parse for in the the strings written
7030 through a logging bio, to cover all the levels that are available
7031 through syslog. The prefixes are now:
7033 PANIC, EMERG, EMR => LOG_EMERG
7034 ALERT, ALR => LOG_ALERT
7035 CRIT, CRI => LOG_CRIT
7036 ERROR, ERR => LOG_ERR
7037 WARNING, WARN, WAR => LOG_WARNING
7038 NOTICE, NOTE, NOT => LOG_NOTICE
7039 INFO, INF => LOG_INFO
7040 DEBUG, DBG => LOG_DEBUG
7042 and as before, if none of those prefixes are present at the
7043 beginning of the string, LOG_ERR is chosen.
7045 On Win32, the LOG_* levels are mapped according to this:
7047 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
7048 LOG_WARNING => EVENTLOG_WARNING_TYPE
7049 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
7053 *) Made it possible to reconfigure with just the configuration
7054 argument "reconf" or "reconfigure". The command line arguments
7055 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
7056 and are retrieved from there when reconfiguring.
7060 [Assar Westerlund <assar@sics.se>, Richard Levitte]
7062 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
7065 *) The obj_dat.pl script was messing up the sorting of object
7066 names. The reason was that it compared the quoted version
7067 of strings as a result "OCSP" > "OCSP Signing" because
7068 " > SPACE. Changed script to store unquoted versions of
7069 names and add quotes on output. It was also omitting some
7070 names from the lookup table if they were given a default
7071 value (that is if SN is missing it is given the same
7072 value as LN and vice versa), these are now added on the
7073 grounds that if an object has a name we should be able to
7074 look it up. Finally added warning output when duplicate
7075 short or long names are found.
7078 *) Changes needed for Tandem NSK.
7079 [Scott Uroff <scott@xypro.com>]
7081 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
7082 RSA_padding_check_SSLv23(), special padding was never detected
7083 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
7084 version rollback attacks was not effective.
7086 In s23_clnt.c, don't use special rollback-attack detection padding
7087 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
7088 client; similarly, in s23_srvr.c, don't do the rollback check if
7089 SSL 2.0 is the only protocol enabled in the server.
7092 *) Make it possible to get hexdumps of unprintable data with 'openssl
7093 asn1parse'. By implication, the functions ASN1_parse_dump() and
7094 BIO_dump_indent() are added.
7097 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
7098 these print out strings and name structures based on various
7099 flags including RFC2253 support and proper handling of
7100 multibyte characters. Added options to the 'x509' utility
7101 to allow the various flags to be set.
7104 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
7105 Also change the functions X509_cmp_current_time() and
7106 X509_gmtime_adj() work with an ASN1_TIME structure,
7107 this will enable certificates using GeneralizedTime in validity
7108 dates to be checked.
7111 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
7112 negative public key encodings) on by default,
7113 NO_NEG_PUBKEY_BUG can be set to disable it.
7116 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
7117 content octets. An i2c_ASN1_OBJECT is unnecessary because
7118 the encoding can be trivially obtained from the structure.
7121 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
7122 not read locks (CRYPTO_r_[un]lock).
7125 *) A first attempt at creating official support for shared
7126 libraries through configuration. I've kept it so the
7127 default is static libraries only, and the OpenSSL programs
7128 are always statically linked for now, but there are
7129 preparations for dynamic linking in place.
7130 This has been tested on Linux and Tru64.
7133 *) Randomness polling function for Win9x, as described in:
7134 Peter Gutmann, Software Generation of Practically Strong
7138 *) Fix so PRNG is seeded in req if using an already existing
7142 *) New options to smime application. -inform and -outform
7143 allow alternative formats for the S/MIME message including
7144 PEM and DER. The -content option allows the content to be
7145 specified separately. This should allow things like Netscape
7146 form signing output easier to verify.
7149 *) Fix the ASN1 encoding of tags using the 'long form'.
7152 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7153 STRING types. These convert content octets to and from the
7154 underlying type. The actual tag and length octets are
7155 already assumed to have been read in and checked. These
7156 are needed because all other string types have virtually
7157 identical handling apart from the tag. By having versions
7158 of the ASN1 functions that just operate on content octets
7159 IMPLICIT tagging can be handled properly. It also allows
7160 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7161 and ASN1_INTEGER are identical apart from the tag.
7164 *) Change the handling of OID objects as follows:
7166 - New object identifiers are inserted in objects.txt, following
7167 the syntax given in objects.README.
7168 - objects.pl is used to process obj_mac.num and create a new
7170 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7173 This is currently kind of a hack, and the perl code in objects.pl
7174 isn't very elegant, but it works as I intended. The simplest way
7175 to check that it worked correctly is to look in obj_dat.h and
7176 check the array nid_objs and make sure the objects haven't moved
7177 around (this is important!). Additions are OK, as well as
7178 consistent name changes.
7181 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7184 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7185 The given file adds to whatever has already been seeded into the
7186 random pool through the RANDFILE configuration file option or
7187 environment variable, or the default random state file.
7190 *) mkstack.pl now sorts each macro group into lexical order.
7191 Previously the output order depended on the order the files
7192 appeared in the directory, resulting in needless rewriting
7196 *) Patches to make OpenSSL compile under Win32 again. Mostly
7197 work arounds for the VC++ problem that it treats func() as
7198 func(void). Also stripped out the parts of mkdef.pl that
7199 added extra typesafe functions: these no longer exist.
7202 *) Reorganisation of the stack code. The macros are now all
7203 collected in safestack.h . Each macro is defined in terms of
7204 a "stack macro" of the form SKM_<name>(type, a, b). The
7205 DEBUG_SAFESTACK is now handled in terms of function casts,
7206 this has the advantage of retaining type safety without the
7207 use of additional functions. If DEBUG_SAFESTACK is not defined
7208 then the non typesafe macros are used instead. Also modified the
7209 mkstack.pl script to handle the new form. Needs testing to see
7210 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7211 the default if no major problems. Similar behaviour for ASN1_SET_OF
7212 and PKCS12_STACK_OF.
7215 *) When some versions of IIS use the 'NET' form of private key the
7216 key derivation algorithm is different. Normally MD5(password) is
7217 used as a 128 bit RC4 key. In the modified case
7218 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7219 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7220 as the old Netscape_RSA functions except they have an additional
7221 'sgckey' parameter which uses the modified algorithm. Also added
7222 an -sgckey command line option to the rsa utility. Thanks to
7223 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7224 algorithm to openssl-dev.
7227 *) The evp_local.h macros were using 'c.##kname' which resulted in
7228 invalid expansion on some systems (SCO 5.0.5 for example).
7229 Corrected to 'c.kname'.
7230 [Phillip Porch <root@theporch.com>]
7232 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7233 a STACK of email addresses from a certificate or request, these look
7234 in the subject name and the subject alternative name extensions and
7235 omit any duplicate addresses.
7238 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7239 This makes DSA verification about 2 % faster.
7242 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7243 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7244 plus overhead for 1024 bit moduli).
7245 This makes exponentiations about 0.5 % faster for 1024 bit
7246 exponents (as measured by "openssl speed rsa2048").
7249 *) Rename memory handling macros to avoid conflicts with other
7251 Malloc => OPENSSL_malloc
7252 Malloc_locked => OPENSSL_malloc_locked
7253 Realloc => OPENSSL_realloc
7254 Free => OPENSSL_free
7257 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7258 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7261 *) CygWin32 support.
7262 [John Jarvie <jjarvie@newsguy.com>]
7264 *) The type-safe stack code has been rejigged. It is now only compiled
7265 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7266 by default all type-specific stack functions are "#define"d back to
7267 standard stack functions. This results in more streamlined output
7268 but retains the type-safety checking possibilities of the original
7272 *) The STACK code has been cleaned up, and certain type declarations
7273 that didn't make a lot of sense have been brought in line. This has
7274 also involved a cleanup of sorts in safestack.h to more correctly
7275 map type-safe stack functions onto their plain stack counterparts.
7276 This work has also resulted in a variety of "const"ifications of
7277 lots of the code, especially "_cmp" operations which should normally
7278 be prototyped with "const" parameters anyway.
7281 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7282 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7283 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7284 where all of 'md' is used each time the PRNG is used, but 'state'
7285 is used only indexed by a cyclic counter. As entropy may not be
7286 well distributed from the beginning, 'md' is important as a
7287 chaining variable. However, the output function chains only half
7288 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7289 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7290 in all of 'state' being rewritten, with the new values depending
7291 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7294 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7295 the handshake is continued after ssl_verify_cert_chain();
7296 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7297 can lead to 'unexplainable' connection aborts later.
7298 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7300 *) Major EVP API cipher revision.
7301 Add hooks for extra EVP features. This allows various cipher
7302 parameters to be set in the EVP interface. Support added for variable
7303 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7304 setting of RC2 and RC5 parameters.
7306 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7309 Remove lots of duplicated code from the EVP library. For example *every*
7310 cipher init() function handles the 'iv' in the same way according to the
7311 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7312 for CFB and OFB modes they zero ctx->num.
7314 New functionality allows removal of S/MIME code RC2 hack.
7316 Most of the routines have the same form and so can be declared in terms
7319 By shifting this to the top level EVP_CipherInit() it can be removed from
7320 all individual ciphers. If the cipher wants to handle IVs or keys
7321 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7324 Change lots of functions like EVP_EncryptUpdate() to now return a
7325 value: although software versions of the algorithms cannot fail
7326 any installed hardware versions can.
7329 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7330 this option is set, tolerate broken clients that send the negotiated
7331 protocol version number instead of the requested protocol version
7335 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7336 i.e. non-zero for export ciphersuites, zero otherwise.
7337 Previous versions had this flag inverted, inconsistent with
7338 rsa_tmp_cb (..._TMP_RSA_CB).
7339 [Bodo Moeller; problem reported by Amit Chopra]
7341 *) Add missing DSA library text string. Work around for some IIS
7342 key files with invalid SEQUENCE encoding.
7345 *) Add a document (doc/standards.txt) that list all kinds of standards
7346 and so on that are implemented in OpenSSL.
7349 *) Enhance c_rehash script. Old version would mishandle certificates
7350 with the same subject name hash and wouldn't handle CRLs at all.
7351 Added -fingerprint option to crl utility, to support new c_rehash
7355 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7358 *) Fix for SSL server purpose checking. Server checking was
7359 rejecting certificates which had extended key usage present
7360 but no ssl client purpose.
7361 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7363 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7364 is a little unclear about how a blank password is handled.
7365 Since the password in encoded as a BMPString with terminating
7366 double NULL a zero length password would end up as just the
7367 double NULL. However no password at all is different and is
7368 handled differently in the PKCS#12 key generation code. NS
7369 treats a blank password as zero length. MSIE treats it as no
7370 password on export: but it will try both on import. We now do
7371 the same: PKCS12_parse() tries zero length and no password if
7372 the password is set to "" or NULL (NULL is now a valid password:
7373 it wasn't before) as does the pkcs12 application.
7376 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7377 perror when PEM_read_bio_X509_REQ fails, the error message must
7378 be obtained from the error queue.
7381 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7382 it in ERR_remove_state if appropriate, and change ERR_get_state
7383 accordingly to avoid race conditions (this is necessary because
7384 thread_hash is no longer constant once set).
7387 *) Bugfix for linux-elf makefile.one.
7390 *) RSA_get_default_method() will now cause a default
7391 RSA_METHOD to be chosen if one doesn't exist already.
7392 Previously this was only set during a call to RSA_new()
7393 or RSA_new_method(NULL) meaning it was possible for
7394 RSA_get_default_method() to return NULL.
7397 *) Added native name translation to the existing DSO code
7398 that will convert (if the flag to do so is set) filenames
7399 that are sufficiently small and have no path information
7400 into a canonical native form. Eg. "blah" converted to
7401 "libblah.so" or "blah.dll" etc.
7404 *) New function ERR_error_string_n(e, buf, len) which is like
7405 ERR_error_string(e, buf), but writes at most 'len' bytes
7406 including the 0 terminator. For ERR_error_string_n, 'buf'
7408 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7410 *) CONF library reworked to become more general. A new CONF
7411 configuration file reader "class" is implemented as well as a
7412 new functions (NCONF_*, for "New CONF") to handle it. The now
7413 old CONF_* functions are still there, but are reimplemented to
7414 work in terms of the new functions. Also, a set of functions
7415 to handle the internal storage of the configuration data is
7416 provided to make it easier to write new configuration file
7417 reader "classes" (I can definitely see something reading a
7418 configuration file in XML format, for example), called _CONF_*,
7419 or "the configuration storage API"...
7421 The new configuration file reading functions are:
7423 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7424 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7426 NCONF_default, NCONF_WIN32
7428 NCONF_dump_fp, NCONF_dump_bio
7430 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7431 NCONF_new creates a new CONF object. This works in the same way
7432 as other interfaces in OpenSSL, like the BIO interface.
7433 NCONF_dump_* dump the internal storage of the configuration file,
7434 which is useful for debugging. All other functions take the same
7435 arguments as the old CONF_* functions wth the exception of the
7436 first that must be a `CONF *' instead of a `LHASH *'.
7438 To make it easer to use the new classes with the old CONF_* functions,
7439 the function CONF_set_default_method is provided.
7442 *) Add '-tls1' option to 'openssl ciphers', which was already
7443 mentioned in the documentation but had not been implemented.
7444 (This option is not yet really useful because even the additional
7445 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7448 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7449 OpenSSL-based applications) load shared libraries and bind to
7450 them in a portable way.
7451 [Geoff Thorpe, with contributions from Richard Levitte]
7453 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7455 *) Make sure _lrotl and _lrotr are only used with MSVC.
7457 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7458 (the default implementation of RAND_status).
7460 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7461 to '-clrext' (= clear extensions), as intended and documented.
7462 [Bodo Moeller; inconsistency pointed out by Michael Attili
7465 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7466 was larger than the MD block size.
7467 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7469 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7470 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7471 using the passed key: if the passed key was a private key the result
7472 of X509_print(), for example, would be to print out all the private key
7476 *) des_quad_cksum() byte order bug fix.
7477 [Ulf Möller, using the problem description in krb4-0.9.7, where
7478 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7480 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7482 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7484 *) For easily testing in shell scripts whether some command
7485 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7486 returns with exit code 0 iff no command of the given name is available.
7487 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7488 the output goes to stdout and nothing is printed to stderr.
7489 Additional arguments are always ignored.
7491 Since for each cipher there is a command of the same name,
7492 the 'no-cipher' compilation switches can be tested this way.
7494 ('openssl no-XXX' is not able to detect pseudo-commands such
7495 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7498 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7501 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7502 is set; it will be thrown away anyway because each handshake creates
7504 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7505 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7506 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7507 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7510 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7511 'Q' and 'R' lose their special meanings (quit/renegotiate).
7512 This is part of what -quiet does; unlike -quiet, -ign_eof
7513 does not suppress any output.
7516 *) Add compatibility options to the purpose and trust code. The
7517 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7518 accepts a certificate or CA, this was the previous behaviour,
7519 with all the associated security issues.
7521 X509_TRUST_COMPAT is the old trust behaviour: only and
7522 automatically trust self signed roots in certificate store. A
7523 new trust setting X509_TRUST_DEFAULT is used to specify that
7524 a purpose has no associated trust setting and it should instead
7525 use the value in the default purpose.
7528 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7529 and fix a memory leak.
7532 *) In util/mkerr.pl (which implements 'make errors'), preserve
7533 reason strings from the previous version of the .c file, as
7534 the default to have only downcase letters (and digits) in
7535 automatically generated reasons codes is not always appropriate.
7538 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7539 using strerror. Previously, ERR_reason_error_string() returned
7540 library names as reason strings for SYSerr; but SYSerr is a special
7541 case where small numbers are errno values, not library numbers.
7544 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7545 converts DSA parameters into DH parameters. (When creating parameters,
7546 DSA_generate_parameters is used.)
7549 *) Include 'length' (recommended exponent length) in C code generated
7550 by 'openssl dhparam -C'.
7553 *) The second argument to set_label in perlasm was already being used
7554 so couldn't be used as a "file scope" flag. Moved to third argument
7558 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7559 instead of RAND_bytes for encryption IVs and salts.
7562 *) Include RAND_status() into RAND_METHOD instead of implementing
7563 it only for md_rand.c Otherwise replacing the PRNG by calling
7564 RAND_set_rand_method would be impossible.
7567 *) Don't let DSA_generate_key() enter an infinite loop if the random
7568 number generation fails.
7571 *) New 'rand' application for creating pseudo-random output.
7574 *) Added configuration support for Linux/IA64
7575 [Rolf Haberrecker <rolf@suse.de>]
7577 *) Assembler module support for Mingw32.
7580 *) Shared library support for HPUX (in shlib/).
7581 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
7583 *) Shared library support for Solaris gcc.
7584 [Lutz Behnke <behnke@trustcenter.de>]
7586 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
7588 *) PKCS7_encrypt() was adding text MIME headers twice because they
7589 were added manually and by SMIME_crlf_copy().
7592 *) In bntest.c don't call BN_rand with zero bits argument.
7593 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7595 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7596 case was implemented. This caused BN_div_recp() to fail occasionally.
7599 *) Add an optional second argument to the set_label() in the perl
7600 assembly language builder. If this argument exists and is set
7601 to 1 it signals that the assembler should use a symbol whose
7602 scope is the entire file, not just the current function. This
7603 is needed with MASM which uses the format label:: for this scope.
7604 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7606 *) Change the ASN1 types so they are typedefs by default. Before
7607 almost all types were #define'd to ASN1_STRING which was causing
7608 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7612 *) Change names of new functions to the new get1/get0 naming
7613 convention: After 'get1', the caller owns a reference count
7614 and has to call ..._free; 'get0' returns a pointer to some
7615 data structure without incrementing reference counters.
7616 (Some of the existing 'get' functions increment a reference
7617 counter, some don't.)
7618 Similarly, 'set1' and 'add1' functions increase reference
7619 counters or duplicate objects.
7622 *) Allow for the possibility of temp RSA key generation failure:
7623 the code used to assume it always worked and crashed on failure.
7626 *) Fix potential buffer overrun problem in BIO_printf().
7627 [Ulf Möller, using public domain code by Patrick Powell; problem
7628 pointed out by David Sacerdote <das33@cornell.edu>]
7630 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7631 RAND_egd() and RAND_status(). In the command line application,
7632 the EGD socket can be specified like a seed file using RANDFILE
7636 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7637 Some CAs (e.g. Verisign) distribute certificates in this form.
7640 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7641 list to exclude them. This means that no special compilation option
7642 is needed to use anonymous DH: it just needs to be included in the
7646 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7647 EVP_MD_type. The old functionality is available in a new macro called
7648 EVP_MD_md(). Change code that uses it and update docs.
7651 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7652 where the 'void *' argument is replaced by a function pointer argument.
7653 Previously 'void *' was abused to point to functions, which works on
7654 many platforms, but is not correct. As these functions are usually
7655 called by macros defined in OpenSSL header files, most source code
7656 should work without changes.
7659 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7660 sections with information on -D... compiler switches used for
7661 compiling the library so that applications can see them. To enable
7662 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7663 must be defined. E.g.,
7664 #define OPENSSL_ALGORITHM_DEFINES
7665 #include <openssl/opensslconf.h>
7666 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7667 [Richard Levitte, Ulf and Bodo Möller]
7669 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7673 *) Change the 'other' type in certificate aux info to a STACK_OF
7674 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7675 the required ASN1 format: arbitrary types determined by an OID.
7678 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7679 argument to 'req'. This is not because the function is newer or
7680 better than others it just uses the work 'NEW' in the certificate
7681 request header lines. Some software needs this.
7684 *) Reorganise password command line arguments: now passwords can be
7685 obtained from various sources. Delete the PEM_cb function and make
7686 it the default behaviour: i.e. if the callback is NULL and the
7687 usrdata argument is not NULL interpret it as a null terminated pass
7688 phrase. If usrdata and the callback are NULL then the pass phrase
7689 is prompted for as usual.
7692 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7693 the support is automatically enabled. The resulting binaries will
7694 autodetect the card and use it if present.
7695 [Ben Laurie and Compaq Inc.]
7697 *) Work around for Netscape hang bug. This sends certificate request
7698 and server done in one record. Since this is perfectly legal in the
7699 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7700 the bugs/SSLv3 entry for more info.
7703 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7706 *) Add -rand argument to smime and pkcs12 applications and read/write
7710 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7713 *) Add command line password options to the remaining applications.
7716 *) Bug fix for BN_div_recp() for numerators with an even number of
7720 *) More tests in bntest.c, and changed test_bn output.
7723 *) ./config recognizes MacOS X now.
7726 *) Bug fix for BN_div() when the first words of num and divsor are
7727 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7730 *) Add support for various broken PKCS#8 formats, and command line
7731 options to produce them.
7734 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7735 get temporary BIGNUMs from a BN_CTX.
7738 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7742 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7743 include a #define from the old name to the new. The original intent
7744 was that statically linked binaries could for example just call
7745 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7746 link with digests. This never worked becayse SSLeay_add_all_digests()
7747 and SSLeay_add_all_ciphers() were in the same source file so calling
7748 one would link with the other. They are now in separate source files.
7751 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7754 *) Use a less unusual form of the Miller-Rabin primality test (it used
7755 a binary algorithm for exponentiation integrated into the Miller-Rabin
7756 loop, our standard modexp algorithms are faster).
7759 *) Support for the EBCDIC character set completed.
7760 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7762 *) Source code cleanups: use const where appropriate, eliminate casts,
7763 use void * instead of char * in lhash.
7766 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7767 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7768 this the server could overwrite ephemeral keys that the client
7772 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7773 using 50 iterations of the Rabin-Miller test.
7775 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7776 iterations of the Rabin-Miller test as required by the appendix
7777 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7778 As BN_is_prime_fasttest includes trial division, DSA parameter
7779 generation becomes much faster.
7781 This implies a change for the callback functions in DSA_is_prime
7782 and DSA_generate_parameters: The callback function is called once
7783 for each positive witness in the Rabin-Miller test, not just
7784 occasionally in the inner loop; and the parameters to the
7785 callback function now provide an iteration count for the outer
7786 loop rather than for the current invocation of the inner loop.
7787 DSA_generate_parameters additionally can call the callback
7788 function with an 'iteration count' of -1, meaning that a
7789 candidate has passed the trial division test (when q is generated
7790 from an application-provided seed, trial division is skipped).
7793 *) New function BN_is_prime_fasttest that optionally does trial
7794 division before starting the Rabin-Miller test and has
7795 an additional BN_CTX * argument (whereas BN_is_prime always
7796 has to allocate at least one BN_CTX).
7797 'callback(1, -1, cb_arg)' is called when a number has passed the
7798 trial division stage.
7801 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7805 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7808 *) New function BN_pseudo_rand().
7811 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7812 bignum version of BN_from_montgomery() with the working code from
7813 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7817 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7818 made it impossible to use the same SSL_SESSION data structure in
7819 SSL2 clients in multiple threads.
7822 *) The return value of RAND_load_file() no longer counts bytes obtained
7823 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7824 to seed the PRNG (previously an explicit byte count was required).
7825 [Ulf Möller, Bodo Möller]
7827 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7828 used (char *) instead of (void *) and had casts all over the place.
7831 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7834 *) Retain source code compatibility for BN_prime_checks macro:
7835 BN_is_prime(..., BN_prime_checks, ...) now uses
7836 BN_prime_checks_for_size to determine the appropriate number of
7837 Rabin-Miller iterations.
7840 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7841 DH_CHECK_P_NOT_SAFE_PRIME.
7842 (Check if this is true? OpenPGP calls them "strong".)
7845 *) Merge the functionality of "dh" and "gendh" programs into a new program
7846 "dhparam". The old programs are retained for now but will handle DH keys
7847 (instead of parameters) in future.
7850 *) Make the ciphers, s_server and s_client programs check the return values
7851 when a new cipher list is set.
7854 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7855 ciphers. Before when the 56bit ciphers were enabled the sorting was
7858 The syntax for the cipher sorting has been extended to support sorting by
7859 cipher-strength (using the strength_bits hard coded in the tables).
7860 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7862 Fix a bug in the cipher-command parser: when supplying a cipher command
7863 string with an "undefined" symbol (neither command nor alphanumeric
7864 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7865 an error is flagged.
7867 Due to the strength-sorting extension, the code of the
7868 ssl_create_cipher_list() function was completely rearranged. I hope that
7869 the readability was also increased :-)
7870 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7872 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7873 for the first serial number and places 2 in the serial number file. This
7874 avoids problems when the root CA is created with serial number zero and
7875 the first user certificate has the same issuer name and serial number
7879 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7880 the new code. Add documentation for this stuff.
7883 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7884 X509_*() to X509at_*() on the grounds that they don't handle X509
7885 structures and behave in an analagous way to the X509v3 functions:
7886 they shouldn't be called directly but wrapper functions should be used
7889 So we also now have some wrapper functions that call the X509at functions
7890 when passed certificate requests. (TO DO: similar things can be done with
7891 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7892 things. Some of these need some d2i or i2d and print functionality
7893 because they handle more complex structures.)
7896 *) Add missing #ifndefs that caused missing symbols when building libssl
7897 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7898 NO_RSA in ssl/s2*.c.
7899 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7901 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7902 has a return value which indicates the quality of the random data
7903 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7904 error queue. New function RAND_pseudo_bytes() generates output that is
7905 guaranteed to be unique but not unpredictable. RAND_add is like
7906 RAND_seed, but takes an extra argument for an entropy estimate
7907 (RAND_seed always assumes full entropy).
7910 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7911 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7912 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7913 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7914 false-positive rate of at most 2^-80 for random input.
7917 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7920 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7921 in the 0.9.5 release), this returns the chain
7922 from an X509_CTX structure with a dup of the stack and all
7923 the X509 reference counts upped: so the stack will exist
7924 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7927 Also make SSL_SESSION_print() print out the verify return
7931 *) Add manpage for the pkcs12 command. Also change the default
7932 behaviour so MAC iteration counts are used unless the new
7933 -nomaciter option is used. This improves file security and
7934 only older versions of MSIE (4.0 for example) need it.
7937 *) Honor the no-xxx Configure options when creating .DEF files.
7940 *) Add PKCS#10 attributes to field table: challengePassword,
7941 unstructuredName and unstructuredAddress. These are taken from
7942 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7943 international characters are used.
7945 More changes to X509_ATTRIBUTE code: allow the setting of types
7946 based on strings. Remove the 'loc' parameter when adding
7947 attributes because these will be a SET OF encoding which is sorted
7951 *) Initial changes to the 'req' utility to allow request generation
7952 automation. This will allow an application to just generate a template
7953 file containing all the field values and have req construct the
7956 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7957 used all over the place including certificate requests and PKCS#7
7958 structures. They are currently handled manually where necessary with
7959 some primitive wrappers for PKCS#7. The new functions behave in a
7960 manner analogous to the X509 extension functions: they allow
7961 attributes to be looked up by NID and added.
7963 Later something similar to the X509V3 code would be desirable to
7964 automatically handle the encoding, decoding and printing of the
7965 more complex types. The string types like challengePassword can
7966 be handled by the string table functions.
7968 Also modified the multi byte string table handling. Now there is
7969 a 'global mask' which masks out certain types. The table itself
7970 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7971 is useful when for example there is only one permissible type
7972 (as in countryName) and using the mask might result in no valid
7976 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7977 SSL_get_peer_finished to allow applications to obtain the latest
7978 Finished messages sent to the peer or expected from the peer,
7979 respectively. (SSL_get_peer_finished is usually the Finished message
7980 actually received from the peer, otherwise the protocol will be aborted.)
7982 As the Finished message are message digests of the complete handshake
7983 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7984 be used for external authentication procedures when the authentication
7985 provided by SSL/TLS is not desired or is not enough.
7988 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7989 the host supports BWX extension and if Compaq C is present on the
7990 $PATH. Just exploiting of the BWX extension results in 20-30%
7991 performance kick for some algorithms, e.g. DES and RC4 to mention
7992 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7996 *) Add support for MS "fast SGC". This is arguably a violation of the
7997 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7998 weak crypto and after checking the certificate is SGC a second one
7999 with strong crypto. MS SGC stops the first handshake after receiving
8000 the server certificate message and sends a second client hello. Since
8001 a server will typically do all the time consuming operations before
8002 expecting any further messages from the client (server key exchange
8003 is the most expensive) there is little difference between the two.
8005 To get OpenSSL to support MS SGC we have to permit a second client
8006 hello message after we have sent server done. In addition we have to
8007 reset the MAC if we do get this second client hello.
8010 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
8011 if a DER encoded private key is RSA or DSA traditional format. Changed
8012 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
8013 format DER encoded private key. Newer code should use PKCS#8 format which
8014 has the key type encoded in the ASN1 structure. Added DER private key
8015 support to pkcs8 application.
8018 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
8019 ciphersuites has been selected (as required by the SSL 3/TLS 1
8020 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
8021 is set, we interpret this as a request to violate the specification
8022 (the worst that can happen is a handshake failure, and 'correct'
8023 behaviour would result in a handshake failure anyway).
8026 *) In SSL_CTX_add_session, take into account that there might be multiple
8027 SSL_SESSION structures with the same session ID (e.g. when two threads
8028 concurrently obtain them from an external cache).
8029 The internal cache can handle only one SSL_SESSION with a given ID,
8030 so if there's a conflict, we now throw out the old one to achieve
8034 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
8035 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
8036 some routines that use cipher OIDs: some ciphers do not have OIDs
8037 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
8041 *) Simplify the trust setting structure and code. Now we just have
8042 two sequences of OIDs for trusted and rejected settings. These will
8043 typically have values the same as the extended key usage extension
8044 and any application specific purposes.
8046 The trust checking code now has a default behaviour: it will just
8047 check for an object with the same NID as the passed id. Functions can
8048 be provided to override either the default behaviour or the behaviour
8049 for a given id. SSL client, server and email already have functions
8050 in place for compatibility: they check the NID and also return "trusted"
8051 if the certificate is self signed.
8054 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
8055 traditional format into an EVP_PKEY structure.
8058 *) Add a password callback function PEM_cb() which either prompts for
8059 a password if usr_data is NULL or otherwise assumes it is a null
8060 terminated password. Allow passwords to be passed on command line
8061 environment or config files in a few more utilities.
8064 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
8065 keys. Add some short names for PKCS#8 PBE algorithms and allow them
8066 to be specified on the command line for the pkcs8 and pkcs12 utilities.
8067 Update documentation.
8070 *) Support for ASN1 "NULL" type. This could be handled before by using
8071 ASN1_TYPE but there wasn't any function that would try to read a NULL
8072 and produce an error if it couldn't. For compatibility we also have
8073 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
8074 don't allocate anything because they don't need to.
8077 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
8079 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
8081 *) Rebuild of the memory allocation routines used by OpenSSL code and
8082 possibly others as well. The purpose is to make an interface that
8083 provide hooks so anyone can build a separate set of allocation and
8084 deallocation routines to be used by OpenSSL, for example memory
8085 pool implementations, or something else, which was previously hard
8086 since Malloc(), Realloc() and Free() were defined as macros having
8087 the values malloc, realloc and free, respectively (except for Win32
8088 compilations). The same is provided for memory debugging code.
8089 OpenSSL already comes with functionality to find memory leaks, but
8090 this gives people a chance to debug other memory problems.
8092 With these changes, a new set of functions and macros have appeared:
8094 CRYPTO_set_mem_debug_functions() [F]
8095 CRYPTO_get_mem_debug_functions() [F]
8096 CRYPTO_dbg_set_options() [F]
8097 CRYPTO_dbg_get_options() [F]
8098 CRYPTO_malloc_debug_init() [M]
8100 The memory debug functions are NULL by default, unless the library
8101 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
8102 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
8103 gives the standard debugging functions that come with OpenSSL) or
8104 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
8105 provided by the library user) must be used. When the standard
8106 debugging functions are used, CRYPTO_dbg_set_options can be used to
8107 request additional information:
8108 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
8109 the CRYPTO_MDEBUG_xxx macro when compiling the library.
8111 Also, things like CRYPTO_set_mem_functions will always give the
8112 expected result (the new set of functions is used for allocation
8113 and deallocation) at all times, regardless of platform and compiler
8116 To finish it up, some functions that were never use in any other
8117 way than through macros have a new API and new semantic:
8120 CRYPTO_dbg_realloc()
8123 All macros of value have retained their old syntax.
8124 [Richard Levitte and Bodo Moeller]
8126 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
8127 ordering of SMIMECapabilities wasn't in "strength order" and there
8128 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
8132 *) Some ASN1 types with illegal zero length encoding (INTEGER,
8133 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
8134 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
8136 *) Merge in my S/MIME library for OpenSSL. This provides a simple
8137 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
8138 functionality to handle multipart/signed properly) and a utility
8139 called 'smime' to call all this stuff. This is based on code I
8140 originally wrote for Celo who have kindly allowed it to be
8141 included in OpenSSL.
8144 *) Add variants des_set_key_checked and des_set_key_unchecked of
8145 des_set_key (aka des_key_sched). Global variable des_check_key
8146 decides which of these is called by des_set_key; this way
8147 des_check_key behaves as it always did, but applications and
8148 the library itself, which was buggy for des_check_key == 1,
8149 have a cleaner way to pick the version they need.
8152 *) New function PKCS12_newpass() which changes the password of a
8156 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8157 dynamic mix. In both cases the ids can be used as an index into the
8158 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8159 functions so they accept a list of the field values and the
8160 application doesn't need to directly manipulate the X509_TRUST
8164 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8168 *) Modify the way the V3 extension code looks up extensions. This now
8169 works in a similar way to the object code: we have some "standard"
8170 extensions in a static table which is searched with OBJ_bsearch()
8171 and the application can add dynamic ones if needed. The file
8172 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8173 updated whenever a new extension is added to the core code and kept
8174 in ext_nid order. There is a simple program 'tabtest.c' which checks
8175 this. New extensions are not added too often so this file can readily
8176 be maintained manually.
8178 There are two big advantages in doing things this way. The extensions
8179 can be looked up immediately and no longer need to be "added" using
8180 X509V3_add_standard_extensions(): this function now does nothing.
8181 [Side note: I get *lots* of email saying the extension code doesn't
8182 work because people forget to call this function]
8183 Also no dynamic allocation is done unless new extensions are added:
8184 so if we don't add custom extensions there is no need to call
8185 X509V3_EXT_cleanup().
8188 *) Modify enc utility's salting as follows: make salting the default. Add a
8189 magic header, so unsalted files fail gracefully instead of just decrypting
8190 to garbage. This is because not salting is a big security hole, so people
8191 should be discouraged from doing it.
8194 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8195 digest to be passed on the command line but it only used this
8196 parameter when signing a certificate. Modified so all relevant
8197 operations are affected by the digest parameter including the
8198 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8199 DSA key was used because it didn't fix the digest.
8202 *) Initial certificate chain verify code. Currently tests the untrusted
8203 certificates for consistency with the verify purpose (which is set
8204 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8206 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8207 this is because it will reject chains with invalid extensions whereas
8208 every previous version of OpenSSL and SSLeay made no checks at all.
8210 Trust code: checks the root CA for the relevant trust settings. Trust
8211 settings have an initial value consistent with the verify purpose: e.g.
8212 if the verify purpose is for SSL client use it expects the CA to be
8213 trusted for SSL client use. However the default value can be changed to
8214 permit custom trust settings: one example of this would be to only trust
8215 certificates from a specific "secure" set of CAs.
8217 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8218 which should be used for version portability: especially since the
8219 verify structure is likely to change more often now.
8221 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8222 to set them. If not set then assume SSL clients will verify SSL servers
8225 Two new options to the verify program: -untrusted allows a set of
8226 untrusted certificates to be passed in and -purpose which sets the
8227 intended purpose of the certificate. If a purpose is set then the
8228 new chain verify code is used to check extension consistency.
8231 *) Support for the authority information access extension.
8234 *) Modify RSA and DSA PEM read routines to transparently handle
8235 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8236 public keys in a format compatible with certificate
8237 SubjectPublicKeyInfo structures. Unfortunately there were already
8238 functions called *_PublicKey_* which used various odd formats so
8239 these are retained for compatibility: however the DSA variants were
8240 never in a public release so they have been deleted. Changed dsa/rsa
8241 utilities to handle the new format: note no releases ever handled public
8242 keys so we should be OK.
8244 The primary motivation for this change is to avoid the same fiasco
8245 that dogs private keys: there are several incompatible private key
8246 formats some of which are standard and some OpenSSL specific and
8247 require various evil hacks to allow partial transparent handling and
8248 even then it doesn't work with DER formats. Given the option anything
8249 other than PKCS#8 should be dumped: but the other formats have to
8250 stay in the name of compatibility.
8252 With public keys and the benefit of hindsight one standard format
8253 is used which works with EVP_PKEY, RSA or DSA structures: though
8254 it clearly returns an error if you try to read the wrong kind of key.
8256 Added a -pubkey option to the 'x509' utility to output the public key.
8257 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8258 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8259 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8260 that do the same as the EVP_PKEY_assign_*() except they up the
8261 reference count of the added key (they don't "swallow" the
8265 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8266 CRLs would fail if the file contained no certificates or no CRLs:
8267 added a new function to read in both types and return the number
8268 read: this means that if none are read it will be an error. The
8269 DER versions of the certificate and CRL reader would always fail
8270 because it isn't possible to mix certificates and CRLs in DER format
8271 without choking one or the other routine. Changed this to just read
8272 a certificate: this is the best we can do. Also modified the code
8273 in apps/verify.c to take notice of return codes: it was previously
8274 attempting to read in certificates from NULL pointers and ignoring
8275 any errors: this is one reason why the cert and CRL reader seemed
8276 to work. It doesn't check return codes from the default certificate
8277 routines: these may well fail if the certificates aren't installed.
8280 *) Code to support otherName option in GeneralName.
8283 *) First update to verify code. Change the verify utility
8284 so it warns if it is passed a self signed certificate:
8285 for consistency with the normal behaviour. X509_verify
8286 has been modified to it will now verify a self signed
8287 certificate if *exactly* the same certificate appears
8288 in the store: it was previously impossible to trust a
8289 single self signed certificate. This means that:
8290 openssl verify ss.pem
8291 now gives a warning about a self signed certificate but
8292 openssl verify -CAfile ss.pem ss.pem
8296 *) For servers, store verify_result in SSL_SESSION data structure
8297 (and add it to external session representation).
8298 This is needed when client certificate verifications fails,
8299 but an application-provided verification callback (set by
8300 SSL_CTX_set_cert_verify_callback) allows accepting the session
8301 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8302 but returns 1): When the session is reused, we have to set
8303 ssl->verify_result to the appropriate error code to avoid
8305 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8307 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8308 case in PKCS7_dataInit() where the signed PKCS7 structure
8309 didn't contain any existing data because it was being created.
8310 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8312 *) Add a salt to the key derivation routines in enc.c. This
8313 forms the first 8 bytes of the encrypted file. Also add a
8314 -S option to allow a salt to be input on the command line.
8317 *) New function X509_cmp(). Oddly enough there wasn't a function
8318 to compare two certificates. We do this by working out the SHA1
8319 hash and comparing that. X509_cmp() will be needed by the trust
8323 *) SSL_get1_session() is like SSL_get_session(), but increments
8324 the reference count in the SSL_SESSION returned.
8325 [Geoff Thorpe <geoff@eu.c2.net>]
8327 *) Fix for 'req': it was adding a null to request attributes.
8328 Also change the X509_LOOKUP and X509_INFO code to handle
8329 certificate auxiliary information.
8332 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8336 *) Add the possibility to add extra information to the memory leak
8337 detecting output, to form tracebacks, showing from where each
8338 allocation was originated: CRYPTO_push_info("constant string") adds
8339 the string plus current file name and line number to a per-thread
8340 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8341 is like calling CYRPTO_pop_info() until the stack is empty.
8342 Also updated memory leak detection code to be multi-thread-safe.
8345 *) Add options -text and -noout to pkcs7 utility and delete the
8346 encryption options which never did anything. Update docs.
8349 *) Add options to some of the utilities to allow the pass phrase
8350 to be included on either the command line (not recommended on
8351 OSes like Unix) or read from the environment. Update the
8352 manpages and fix a few bugs.
8355 *) Add a few manpages for some of the openssl commands.
8358 *) Fix the -revoke option in ca. It was freeing up memory twice,
8359 leaking and not finding already revoked certificates.
8362 *) Extensive changes to support certificate auxiliary information.
8363 This involves the use of X509_CERT_AUX structure and X509_AUX
8364 functions. An X509_AUX function such as PEM_read_X509_AUX()
8365 can still read in a certificate file in the usual way but it
8366 will also read in any additional "auxiliary information". By
8367 doing things this way a fair degree of compatibility can be
8368 retained: existing certificates can have this information added
8369 using the new 'x509' options.
8371 Current auxiliary information includes an "alias" and some trust
8372 settings. The trust settings will ultimately be used in enhanced
8373 certificate chain verification routines: currently a certificate
8374 can only be trusted if it is self signed and then it is trusted
8378 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8379 The problem was that one of the replacement routines had not been working
8380 since SSLeay releases. For now the offending routine has been replaced
8381 with non-optimised assembler. Even so, this now gives around 95%
8382 performance improvement for 1024 bit RSA signs.
8385 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8386 handling. Most clients have the effective key size in bits equal to
8387 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8388 A few however don't do this and instead use the size of the decrypted key
8389 to determine the RC2 key length and the AlgorithmIdentifier to determine
8390 the effective key length. In this case the effective key length can still
8391 be 40 bits but the key length can be 168 bits for example. This is fixed
8392 by manually forcing an RC2 key into the EVP_PKEY structure because the
8393 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8394 the key length and effective key length are equal.
8397 *) Add a bunch of functions that should simplify the creation of
8398 X509_NAME structures. Now you should be able to do:
8399 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8400 and have it automatically work out the correct field type and fill in
8401 the structures. The more adventurous can try:
8402 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8403 and it will (hopefully) work out the correct multibyte encoding.
8406 *) Change the 'req' utility to use the new field handling and multibyte
8407 copy routines. Before the DN field creation was handled in an ad hoc
8408 way in req, ca, and x509 which was rather broken and didn't support
8409 BMPStrings or UTF8Strings. Since some software doesn't implement
8410 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8411 using the dirstring_type option. See the new comment in the default
8412 openssl.cnf for more info.
8415 *) Make crypto/rand/md_rand.c more robust:
8416 - Assure unique random numbers after fork().
8417 - Make sure that concurrent threads access the global counter and
8418 md serializably so that we never lose entropy in them
8419 or use exactly the same state in multiple threads.
8420 Access to the large state is not always serializable because
8421 the additional locking could be a performance killer, and
8422 md should be large enough anyway.
8425 *) New file apps/app_rand.c with commonly needed functionality
8426 for handling the random seed file.
8428 Use the random seed file in some applications that previously did not:
8430 dsaparam -genkey (which also ignored its '-rand' option),
8433 x509 (when signing).
8434 Except on systems with /dev/urandom, it is crucial to have a random
8435 seed file at least for key creation, DSA signing, and for DH exchanges;
8436 for RSA signatures we could do without one.
8438 gendh and gendsa (unlike genrsa) used to read only the first byte
8439 of each file listed in the '-rand' option. The function as previously
8440 found in genrsa is now in app_rand.c and is used by all programs
8441 that support '-rand'.
8444 *) In RAND_write_file, use mode 0600 for creating files;
8445 don't just chmod when it may be too late.
8448 *) Report an error from X509_STORE_load_locations
8449 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8452 *) New function ASN1_mbstring_copy() this copies a string in either
8453 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8454 into an ASN1_STRING type. A mask of permissible types is passed
8455 and it chooses the "minimal" type to use or an error if not type
8459 *) Add function equivalents to the various macros in asn1.h. The old
8460 macros are retained with an M_ prefix. Code inside the library can
8461 use the M_ macros. External code (including the openssl utility)
8462 should *NOT* in order to be "shared library friendly".
8465 *) Add various functions that can check a certificate's extensions
8466 to see if it usable for various purposes such as SSL client,
8467 server or S/MIME and CAs of these types. This is currently
8468 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8469 verification. Also added a -purpose flag to x509 utility to
8470 print out all the purposes.
8473 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8477 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8478 for, obtain and decode and extension and obtain its critical flag.
8479 This allows all the necessary extension code to be handled in a
8480 single function call.
8483 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8484 platforms. See crypto/rc4/rc4_enc.c for further details.
8487 *) New -noout option to asn1parse. This causes no output to be produced
8488 its main use is when combined with -strparse and -out to extract data
8489 from a file (which may not be in ASN.1 format).
8492 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8493 when producing the local key id.
8494 [Richard Levitte <levitte@stacken.kth.se>]
8496 *) New option -dhparam in s_server. This allows a DH parameter file to be
8497 stated explicitly. If it is not stated then it tries the first server
8498 certificate file. The previous behaviour hard coded the filename
8502 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8503 a public key to be input or output. For example:
8504 openssl rsa -in key.pem -pubout -out pubkey.pem
8505 Also added necessary DSA public key functions to handle this.
8508 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8509 in the message. This was handled by allowing
8510 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8511 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8513 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8514 to the end of the strings whereas this didn't. This would cause problems
8515 if strings read with d2i_ASN1_bytes() were later modified.
8516 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8518 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8519 data and it contains EOF it will end up returning an error. This is
8520 caused by input 46 bytes long. The cause is due to the way base64
8521 BIOs find the start of base64 encoded data. They do this by trying a
8522 trial decode on each line until they find one that works. When they
8523 do a flag is set and it starts again knowing it can pass all the
8524 data directly through the decoder. Unfortunately it doesn't reset
8525 the context it uses. This means that if EOF is reached an attempt
8526 is made to pass two EOFs through the context and this causes the
8527 resulting error. This can also cause other problems as well. As is
8528 usual with these problems it takes *ages* to find and the fix is
8529 trivial: move one line.
8530 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8532 *) Ugly workaround to get s_client and s_server working under Windows. The
8533 old code wouldn't work because it needed to select() on sockets and the
8534 tty (for keypresses and to see if data could be written). Win32 only
8535 supports select() on sockets so we select() with a 1s timeout on the
8536 sockets and then see if any characters are waiting to be read, if none
8537 are present then we retry, we also assume we can always write data to
8538 the tty. This isn't nice because the code then blocks until we've
8539 received a complete line of data and it is effectively polling the
8540 keyboard at 1s intervals: however it's quite a bit better than not
8541 working at all :-) A dedicated Windows application might handle this
8542 with an event loop for example.
8545 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8546 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8547 will be called when RSA_sign() and RSA_verify() are used. This is useful
8548 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8549 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8550 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8551 This necessitated the support of an extra signature type NID_md5_sha1
8552 for SSL signatures and modifications to the SSL library to use it instead
8553 of calling RSA_public_decrypt() and RSA_private_encrypt().
8556 *) Add new -verify -CAfile and -CApath options to the crl program, these
8557 will lookup a CRL issuers certificate and verify the signature in a
8558 similar way to the verify program. Tidy up the crl program so it
8559 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8560 less strict. It will now permit CRL extensions even if it is not
8561 a V2 CRL: this will allow it to tolerate some broken CRLs.
8564 *) Initialize all non-automatic variables each time one of the openssl
8565 sub-programs is started (this is necessary as they may be started
8566 multiple times from the "OpenSSL>" prompt).
8567 [Lennart Bang, Bodo Moeller]
8569 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
8570 removing all other RSA functionality (this is what NO_RSA does). This
8571 is so (for example) those in the US can disable those operations covered
8572 by the RSA patent while allowing storage and parsing of RSA keys and RSA
8576 *) Non-copying interface to BIO pairs.
8577 (still largely untested)
8580 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
8581 ASCII string. This was handled independently in various places before.
8584 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
8585 UTF8 strings a character at a time.
8588 *) Use client_version from client hello to select the protocol
8589 (s23_srvr.c) and for RSA client key exchange verification
8590 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8593 *) Add various utility functions to handle SPKACs, these were previously
8594 handled by poking round in the structure internals. Added new function
8595 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8596 print, verify and generate SPKACs. Based on an original idea from
8597 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8600 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8603 *) Allow the config file extension section to be overwritten on the
8604 command line. Based on an original idea from Massimiliano Pala
8605 <madwolf@comune.modena.it>. The new option is called -extensions
8606 and can be applied to ca, req and x509. Also -reqexts to override
8607 the request extensions in req and -crlexts to override the crl extensions
8611 *) Add new feature to the SPKAC handling in ca. Now you can include
8612 the same field multiple times by preceding it by "XXXX." for example:
8615 this is the same syntax as used in the req config file.
8618 *) Allow certificate extensions to be added to certificate requests. These
8619 are specified in a 'req_extensions' option of the req section of the
8620 config file. They can be printed out with the -text option to req but
8621 are otherwise ignored at present.
8624 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8625 data read consists of only the final block it would not decrypted because
8626 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8627 A misplaced 'break' also meant the decrypted final block might not be
8628 copied until the next read.
8631 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8632 a few extra parameters to the DH structure: these will be useful if
8633 for example we want the value of 'q' or implement X9.42 DH.
8636 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8637 provides hooks that allow the default DSA functions or functions on a
8638 "per key" basis to be replaced. This allows hardware acceleration and
8639 hardware key storage to be handled without major modification to the
8640 library. Also added low level modexp hooks and CRYPTO_EX structure and
8641 associated functions.
8644 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8645 as "read only": it can't be written to and the buffer it points to will
8646 not be freed. Reading from a read only BIO is much more efficient than
8647 a normal memory BIO. This was added because there are several times when
8648 an area of memory needs to be read from a BIO. The previous method was
8649 to create a memory BIO and write the data to it, this results in two
8650 copies of the data and an O(n^2) reading algorithm. There is a new
8651 function BIO_new_mem_buf() which creates a read only memory BIO from
8652 an area of memory. Also modified the PKCS#7 routines to use read only
8656 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8657 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8658 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8659 but a retry condition occured while trying to read the rest.
8662 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8663 NID_pkcs7_encrypted by default: this was wrong since this should almost
8664 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8665 the encrypted data type: this is a more sensible place to put it and it
8666 allows the PKCS#12 code to be tidied up that duplicated this
8670 *) Changed obj_dat.pl script so it takes its input and output files on
8671 the command line. This should avoid shell escape redirection problems
8675 *) Initial support for certificate extension requests, these are included
8676 in things like Xenroll certificate requests. Included functions to allow
8677 extensions to be obtained and added.
8680 *) -crlf option to s_client and s_server for sending newlines as
8681 CRLF (as required by many protocols).
8684 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8686 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8687 [Ralf S. Engelschall]
8689 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8690 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8692 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8696 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8697 DH parameters/keys (q is lost during that conversion, but the resulting
8698 DH parameters contain its length).
8700 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8701 much faster than DH_generate_parameters (which creates parameters
8702 where p = 2*q + 1), and also the smaller q makes DH computations
8703 much more efficient (160-bit exponentiation instead of 1024-bit
8704 exponentiation); so this provides a convenient way to support DHE
8705 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8706 utter importance to use
8707 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8709 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8710 when such DH parameters are used, because otherwise small subgroup
8711 attacks may become possible!
8714 *) Avoid memory leak in i2d_DHparams.
8717 *) Allow the -k option to be used more than once in the enc program:
8718 this allows the same encrypted message to be read by multiple recipients.
8721 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8722 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8723 it will always use the numerical form of the OID, even if it has a short
8727 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8728 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8729 otherwise bn_mod_exp was called. In the case of hardware keys for example
8730 no private key components need be present and it might store extra data
8731 in the RSA structure, which cannot be accessed from bn_mod_exp.
8732 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8733 private key operations.
8736 *) Added support for SPARC Linux.
8739 *) pem_password_cb function type incompatibly changed from
8740 typedef int pem_password_cb(char *buf, int size, int rwflag);
8742 ....(char *buf, int size, int rwflag, void *userdata);
8743 so that applications can pass data to their callbacks:
8744 The PEM[_ASN1]_{read,write}... functions and macros now take an
8745 additional void * argument, which is just handed through whenever
8746 the password callback is called.
8747 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8749 New function SSL_CTX_set_default_passwd_cb_userdata.
8751 Compatibility note: As many C implementations push function arguments
8752 onto the stack in reverse order, the new library version is likely to
8753 interoperate with programs that have been compiled with the old
8754 pem_password_cb definition (PEM_whatever takes some data that
8755 happens to be on the stack as its last argument, and the callback
8756 just ignores this garbage); but there is no guarantee whatsoever that
8759 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8760 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8761 problems not only on Windows, but also on some Unix platforms.
8762 To avoid problematic command lines, these definitions are now in an
8763 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8764 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8767 *) MIPS III/IV assembler module is reimplemented.
8770 *) More DES library cleanups: remove references to srand/rand and
8771 delete an unused file.
8774 *) Add support for the the free Netwide assembler (NASM) under Win32,
8775 since not many people have MASM (ml) and it can be hard to obtain.
8776 This is currently experimental but it seems to work OK and pass all
8777 the tests. Check out INSTALL.W32 for info.
8780 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8781 without temporary keys kept an extra copy of the server key,
8782 and connections with temporary keys did not free everything in case
8786 *) New function RSA_check_key and new openssl rsa option -check
8787 for verifying the consistency of RSA keys.
8788 [Ulf Moeller, Bodo Moeller]
8790 *) Various changes to make Win32 compile work:
8791 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8792 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8793 comparison" warnings.
8794 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8797 *) Add a debugging option to PKCS#5 v2 key generation function: when
8798 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8799 derived keys are printed to stderr.
8802 *) Copy the flags in ASN1_STRING_dup().
8803 [Roman E. Pavlov <pre@mo.msk.ru>]
8805 *) The x509 application mishandled signing requests containing DSA
8806 keys when the signing key was also DSA and the parameters didn't match.
8808 It was supposed to omit the parameters when they matched the signing key:
8809 the verifying software was then supposed to automatically use the CA's
8810 parameters if they were absent from the end user certificate.
8812 Omitting parameters is no longer recommended. The test was also
8813 the wrong way round! This was probably due to unusual behaviour in
8814 EVP_cmp_parameters() which returns 1 if the parameters match.
8815 This meant that parameters were omitted when they *didn't* match and
8816 the certificate was useless. Certificates signed with 'ca' didn't have
8818 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8820 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8821 The interface is as follows:
8822 Applications can use
8823 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8824 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8825 "off" is now the default.
8826 The library internally uses
8827 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8828 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8829 to disable memory-checking temporarily.
8831 Some inconsistent states that previously were possible (and were
8832 even the default) are now avoided.
8834 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8835 with each memory chunk allocated; this is occasionally more helpful
8836 than just having a counter.
8838 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8840 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8844 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8845 which largely parallels "options", but is for changing API behaviour,
8846 whereas "options" are about protocol behaviour.
8847 Initial "mode" flags are:
8849 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8850 a single record has been written.
8851 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8852 retries use the same buffer location.
8853 (But all of the contents must be
8857 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8860 *) Fix problems with no-hmac etc.
8861 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8863 *) New functions RSA_get_default_method(), RSA_set_method() and
8864 RSA_get_method(). These allows replacement of RSA_METHODs without having
8865 to mess around with the internals of an RSA structure.
8868 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8869 Also really enable memory leak checks in openssl.c and in some
8871 [Chad C. Mulligan, Bodo Moeller]
8873 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8874 up the length of negative integers. This has now been simplified to just
8875 store the length when it is first determined and use it later, rather
8876 than trying to keep track of where data is copied and updating it to
8878 [Steve Henson, reported by Brien Wheeler
8879 <bwheeler@authentica-security.com>]
8881 *) Add a new function PKCS7_signatureVerify. This allows the verification
8882 of a PKCS#7 signature but with the signing certificate passed to the
8883 function itself. This contrasts with PKCS7_dataVerify which assumes the
8884 certificate is present in the PKCS#7 structure. This isn't always the
8885 case: certificates can be omitted from a PKCS#7 structure and be
8886 distributed by "out of band" means (such as a certificate database).
8889 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8890 function prototypes in pem.h, also change util/mkdef.pl to add the
8891 necessary function names.
8894 *) mk1mf.pl (used by Windows builds) did not properly read the
8895 options set by Configure in the top level Makefile, and Configure
8896 was not even able to write more than one option correctly.
8897 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8900 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8901 file to be loaded from a BIO or FILE pointer. The BIO version will
8902 for example allow memory BIOs to contain config info.
8905 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8906 Whoever hopes to achieve shared-library compatibility across versions
8907 must use this, not the compile-time macro.
8908 (Exercise 0.9.4: Which is the minimum library version required by
8910 Note: All this applies only to multi-threaded programs, others don't
8914 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8915 through a BIO pair triggered the default case, i.e.
8916 SSLerr(...,SSL_R_UNKNOWN_STATE).
8919 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8920 can use the SSL library even if none of the specific BIOs is
8924 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8925 for the encoded length.
8926 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8928 *) Add initial documentation of the X509V3 functions.
8931 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8932 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8933 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8934 secure PKCS#8 private key format with a high iteration count.
8937 *) Fix determination of Perl interpreter: A perl or perl5
8938 _directory_ in $PATH was also accepted as the interpreter.
8939 [Ralf S. Engelschall]
8941 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8942 wrong with it but it was very old and did things like calling
8943 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8947 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8948 to use the new extension code.
8951 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8952 with macros. This should make it easier to change their form, add extra
8953 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8957 *) Add to configuration table a new entry that can specify an alternative
8958 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8959 according to Mark Crispin <MRC@Panda.COM>.
8963 *) DES CBC did not update the IV. Weird.
8966 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8967 Changing the behaviour of the former might break existing programs --
8968 where IV updating is needed, des_ncbc_encrypt can be used.
8971 *) When bntest is run from "make test" it drives bc to check its
8972 calculations, as well as internally checking them. If an internal check
8973 fails, it needs to cause bc to give a non-zero result or make test carries
8974 on without noticing the failure. Fixed.
8977 *) DES library cleanups.
8980 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8981 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8982 ciphers. NOTE: although the key derivation function has been verified
8983 against some published test vectors it has not been extensively tested
8984 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8988 *) Instead of "mkdir -p", which is not fully portable, use new
8989 Perl script "util/mkdir-p.pl".
8992 *) Rewrite the way password based encryption (PBE) is handled. It used to
8993 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8994 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8995 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8996 the 'parameter' field of the AlgorithmIdentifier is passed to the
8997 underlying key generation function so it must do its own ASN1 parsing.
8998 This has also changed the EVP_PBE_CipherInit() function which now has a
8999 'parameter' argument instead of literal salt and iteration count values
9000 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
9003 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
9004 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
9005 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
9006 KEY" because this clashed with PKCS#8 unencrypted string. Since this
9007 value was just used as a "magic string" and not used directly its
9008 value doesn't matter.
9011 *) Introduce some semblance of const correctness to BN. Shame C doesn't
9015 *) "linux-sparc64" configuration (ultrapenguin).
9016 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
9017 "linux-sparc" configuration.
9018 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
9020 *) config now generates no-xxx options for missing ciphers.
9023 *) Support the EBCDIC character set (work in progress).
9024 File ebcdic.c not yet included because it has a different license.
9025 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9027 *) Support BS2000/OSD-POSIX.
9028 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9030 *) Make callbacks for key generation use void * instead of char *.
9033 *) Make S/MIME samples compile (not yet tested).
9036 *) Additional typesafe stacks.
9039 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
9043 Changes between 0.9.3 and 0.9.3a [29 May 1999]
9045 *) New configuration variant "sco5-gcc".
9047 *) Updated some demos.
9048 [Sean O Riordain, Wade Scholine]
9050 *) Add missing BIO_free at exit of pkcs12 application.
9053 *) Fix memory leak in conf.c.
9056 *) Updates for Win32 to assembler version of MD5.
9059 *) Set #! path to perl in apps/der_chop to where we found it
9060 instead of using a fixed path.
9063 *) SHA library changes for irix64-mips4-cc.
9066 *) Improvements for VMS support.
9070 Changes between 0.9.2b and 0.9.3 [24 May 1999]
9072 *) Bignum library bug fix. IRIX 6 passes "make test" now!
9073 This also avoids the problems with SC4.2 and unpatched SC5.
9074 [Andy Polyakov <appro@fy.chalmers.se>]
9076 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
9077 These are required because of the typesafe stack would otherwise break
9078 existing code. If old code used a structure member which used to be STACK
9079 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
9080 sk_num or sk_value it would produce an error because the num, data members
9081 are not present in STACK_OF. Now it just produces a warning. sk_set
9082 replaces the old method of assigning a value to sk_value
9083 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
9084 that does this will no longer work (and should use sk_set instead) but
9085 this could be regarded as a "questionable" behaviour anyway.
9088 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
9089 correctly handle encrypted S/MIME data.
9092 *) Change type of various DES function arguments from des_cblock
9093 (which means, in function argument declarations, pointer to char)
9094 to des_cblock * (meaning pointer to array with 8 char elements),
9095 which allows the compiler to do more typechecking; it was like
9096 that back in SSLeay, but with lots of ugly casts.
9098 Introduce new type const_des_cblock.
9101 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
9102 problems: find RecipientInfo structure that matches recipient certificate
9103 and initialise the ASN1 structures properly based on passed cipher.
9106 *) Belatedly make the BN tests actually check the results.
9109 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
9110 to and from BNs: it was completely broken. New compilation option
9111 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
9112 key elements as negative integers.
9115 *) Reorganize and speed up MD5.
9116 [Andy Polyakov <appro@fy.chalmers.se>]
9119 [Richard Levitte <richard@levitte.org>]
9121 *) New option -out to asn1parse to allow the parsed structure to be
9122 output to a file. This is most useful when combined with the -strparse
9123 option to examine the output of things like OCTET STRINGS.
9126 *) Make SSL library a little more fool-proof by not requiring any longer
9127 that SSL_set_{accept,connect}_state be called before
9128 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
9129 in many applications because usually everything *appeared* to work as
9130 intended anyway -- now it really works as intended).
9133 *) Move openssl.cnf out of lib/.
9136 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
9137 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
9138 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
9139 [Ralf S. Engelschall]
9141 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9142 handle PKCS#7 enveloped data properly.
9143 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9145 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9146 copying pointers. The cert_st handling is changed by this in
9147 various ways (and thus what used to be known as ctx->default_cert
9148 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9149 any longer when s->cert does not give us what we need).
9150 ssl_cert_instantiate becomes obsolete by this change.
9151 As soon as we've got the new code right (possibly it already is?),
9152 we have solved a couple of bugs of the earlier code where s->cert
9153 was used as if it could not have been shared with other SSL structures.
9155 Note that using the SSL API in certain dirty ways now will result
9156 in different behaviour than observed with earlier library versions:
9157 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9158 does not influence s as it used to.
9160 In order to clean up things more thoroughly, inside SSL_SESSION
9161 we don't use CERT any longer, but a new structure SESS_CERT
9162 that holds per-session data (if available); currently, this is
9163 the peer's certificate chain and, for clients, the server's certificate
9164 and temporary key. CERT holds only those values that can have
9165 meaningful defaults in an SSL_CTX.
9168 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9169 from the internal representation. Various PKCS#7 fixes: remove some
9170 evil casts and set the enc_dig_alg field properly based on the signing
9174 *) Allow PKCS#12 password to be set from the command line or the
9175 environment. Let 'ca' get its config file name from the environment
9176 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9180 *) Allow certificate policies extension to use an IA5STRING for the
9181 organization field. This is contrary to the PKIX definition but
9182 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9186 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9187 without disallowing inline assembler and the like for non-pedantic builds.
9190 *) Support Borland C++ builder.
9191 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9196 *) SHA-1 cleanups and performance enhancements.
9197 [Andy Polyakov <appro@fy.chalmers.se>]
9199 *) Sparc v8plus assembler for the bignum library.
9200 [Andy Polyakov <appro@fy.chalmers.se>]
9202 *) Accept any -xxx and +xxx compiler options in Configure.
9205 *) Update HPUX configuration.
9208 *) Add missing sk_<type>_unshift() function to safestack.h
9209 [Ralf S. Engelschall]
9211 *) New function SSL_CTX_use_certificate_chain_file that sets the
9212 "extra_cert"s in addition to the certificate. (This makes sense
9213 only for "PEM" format files, as chains as a whole are not
9217 *) Support verify_depth from the SSL API.
9218 x509_vfy.c had what can be considered an off-by-one-error:
9219 Its depth (which was not part of the external interface)
9220 was actually counting the number of certificates in a chain;
9221 now it really counts the depth.
9224 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9225 instead of X509err, which often resulted in confusing error
9226 messages since the error codes are not globally unique
9227 (e.g. an alleged error in ssl3_accept when a certificate
9228 didn't match the private key).
9230 *) New function SSL_CTX_set_session_id_context that allows to set a default
9231 value (so that you don't need SSL_set_session_id_context for each
9232 connection using the SSL_CTX).
9235 *) OAEP decoding bug fix.
9238 *) Support INSTALL_PREFIX for package builders, as proposed by
9242 *) New Configure options "threads" and "no-threads". For systems
9243 where the proper compiler options are known (currently Solaris
9244 and Linux), "threads" is the default.
9247 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9250 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9251 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9252 such as /usr/local/bin.
9255 *) "make linux-shared" to build shared libraries.
9256 [Niels Poppe <niels@netbox.org>]
9258 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9261 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9262 extension adding in x509 utility.
9265 *) Remove NOPROTO sections and error code comments.
9268 *) Partial rewrite of the DEF file generator to now parse the ANSI
9272 *) New Configure options --prefix=DIR and --openssldir=DIR.
9275 *) Complete rewrite of the error code script(s). It is all now handled
9276 by one script at the top level which handles error code gathering,
9277 header rewriting and C source file generation. It should be much better
9278 than the old method: it now uses a modified version of Ulf's parser to
9279 read the ANSI prototypes in all header files (thus the old K&R definitions
9280 aren't needed for error creation any more) and do a better job of
9281 translating function codes into names. The old 'ASN1 error code imbedded
9282 in a comment' is no longer necessary and it doesn't use .err files which
9283 have now been deleted. Also the error code call doesn't have to appear all
9284 on one line (which resulted in some large lines...).
9287 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9290 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9291 0 (which usually indicates a closed connection), but continue reading.
9294 *) Fix some race conditions.
9297 *) Add support for CRL distribution points extension. Add Certificate
9298 Policies and CRL distribution points documentation.
9301 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9304 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9305 8 of keying material. Merlin has also confirmed interop with this fix
9306 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9307 [Merlin Hughes <merlin@baltimore.ie>]
9309 *) Fix lots of warnings.
9310 [Richard Levitte <levitte@stacken.kth.se>]
9312 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9313 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9314 [Richard Levitte <levitte@stacken.kth.se>]
9316 *) Fix problems with sizeof(long) == 8.
9317 [Andy Polyakov <appro@fy.chalmers.se>]
9319 *) Change functions to ANSI C.
9322 *) Fix typos in error codes.
9323 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9325 *) Remove defunct assembler files from Configure.
9328 *) SPARC v8 assembler BIGNUM implementation.
9329 [Andy Polyakov <appro@fy.chalmers.se>]
9331 *) Support for Certificate Policies extension: both print and set.
9332 Various additions to support the r2i method this uses.
9335 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9336 return a const string when you are expecting an allocated buffer.
9339 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9340 types DirectoryString and DisplayText.
9343 *) Add code to allow r2i extensions to access the configuration database,
9344 add an LHASH database driver and add several ctx helper functions.
9347 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9348 fail when they extended the size of a BIGNUM.
9351 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9352 support typesafe stack.
9355 *) Fix typo in SSL_[gs]et_options().
9356 [Nils Frostberg <nils@medcom.se>]
9358 *) Delete various functions and files that belonged to the (now obsolete)
9359 old X509V3 handling code.
9362 *) New Configure option "rsaref".
9365 *) Don't auto-generate pem.h.
9368 *) Introduce type-safe ASN.1 SETs.
9371 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9372 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9374 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9375 that links with OpenSSL (well at least cause lots of warnings), but fear
9376 not: the conversion is trivial, and it eliminates loads of evil casts. A
9377 few STACKed things have been converted already. Feel free to convert more.
9378 In the fullness of time, I'll do away with the STACK type altogether.
9381 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9382 specified in <certfile> by updating the entry in the index.txt file.
9383 This way one no longer has to edit the index.txt file manually for
9384 revoking a certificate. The -revoke option does the gory details now.
9385 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9387 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9388 `-text' option at all and this way the `-noout -text' combination was
9389 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9390 [Ralf S. Engelschall]
9392 *) Make sure a corresponding plain text error message exists for the
9393 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9394 verify callback function determined that a certificate was revoked.
9395 [Ralf S. Engelschall]
9397 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9398 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9399 all available cipers including rc5, which was forgotten until now.
9400 In order to let the testing shell script know which algorithms
9401 are available, a new (up to now undocumented) command
9402 "openssl list-cipher-commands" is used.
9405 *) Bugfix: s_client occasionally would sleep in select() when
9406 it should have checked SSL_pending() first.
9409 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9410 the raw DSA values prior to ASN.1 encoding.
9413 *) Tweaks to Configure
9414 [Niels Poppe <niels@netbox.org>]
9416 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9420 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9423 *) New config option to avoid instructions that are illegal on the 80386.
9424 The default code is faster, but requires at least a 486.
9427 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9428 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9429 same as SSL2_VERSION anyway.
9432 *) New "-showcerts" option for s_client.
9435 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9436 application. Various cleanups and fixes.
9439 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9440 modify error routines to work internally. Add error codes and PBE init
9441 to library startup routines.
9444 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9445 packing functions to asn1 and evp. Changed function names and error
9446 codes along the way.
9449 *) PKCS12 integration: and so it begins... First of several patches to
9450 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9451 objects to objects.h
9454 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9455 and display support for Thawte strong extranet extension.
9458 *) Add LinuxPPC support.
9459 [Jeff Dubrule <igor@pobox.org>]
9461 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9462 bn_div_words in alpha.s.
9463 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9465 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9466 OAEP isn't supported when OpenSSL is built with RSAref.
9467 [Ulf Moeller <ulf@fitug.de>]
9469 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9470 so they no longer are missing under -DNOPROTO.
9471 [Soren S. Jorvang <soren@t.dk>]
9474 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9476 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9477 doesn't work when the session is reused. Coming soon!
9480 *) Fix a security hole, that allows sessions to be reused in the wrong
9481 context thus bypassing client cert protection! All software that uses
9482 client certs and session caches in multiple contexts NEEDS PATCHING to
9483 allow session reuse! A fuller solution is in the works.
9484 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9486 *) Some more source tree cleanups (removed obsolete files
9487 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9488 permission on "config" script to be executable) and a fix for the INSTALL
9490 [Ulf Moeller <ulf@fitug.de>]
9492 *) Remove some legacy and erroneous uses of malloc, free instead of
9494 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9496 *) Make rsa_oaep_test return non-zero on error.
9497 [Ulf Moeller <ulf@fitug.de>]
9499 *) Add support for native Solaris shared libraries. Configure
9500 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9501 if someone would make that last step automatic.
9502 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9504 *) ctx_size was not built with the right compiler during "make links". Fixed.
9507 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9508 except NULL ciphers". This means the default cipher list will no longer
9509 enable NULL ciphers. They need to be specifically enabled e.g. with
9510 the string "DEFAULT:eNULL".
9513 *) Fix to RSA private encryption routines: if p < q then it would
9514 occasionally produce an invalid result. This will only happen with
9515 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9518 *) Be less restrictive and allow also `perl util/perlpath.pl
9519 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9520 because this way one can also use an interpreter named `perl5' (which is
9521 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9522 installed as `perl').
9523 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9525 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9526 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9528 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9529 advapi32.lib to Win32 build and change the pem test comparision
9530 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9531 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9532 and crypto/des/ede_cbcm_enc.c.
9535 *) DES quad checksum was broken on big-endian architectures. Fixed.
9538 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9539 Win32 test batch file so it (might) work again. The Win32 test batch file
9540 is horrible: I feel ill....
9543 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9544 in e_os.h. Audit of header files to check ANSI and non ANSI
9545 sections: 10 functions were absent from non ANSI section and not exported
9546 from Windows DLLs. Fixed up libeay.num for new functions.
9549 *) Make `openssl version' output lines consistent.
9550 [Ralf S. Engelschall]
9552 *) Fix Win32 symbol export lists for BIO functions: Added
9553 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9554 to ms/libeay{16,32}.def.
9555 [Ralf S. Engelschall]
9557 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9558 fine under Unix and passes some trivial tests I've now added. But the
9559 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9560 added to make sure no one expects that this stuff really works in the
9561 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9562 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9564 [Ralf S. Engelschall]
9566 *) Fix the generation of two part addresses in perl.
9567 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
9569 *) Add config entry for Linux on MIPS.
9570 [John Tobey <jtobey@channel1.com>]
9572 *) Make links whenever Configure is run, unless we are on Windoze.
9575 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
9576 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
9580 *) Add a useful kludge to allow package maintainers to specify compiler and
9581 other platforms details on the command line without having to patch the
9582 Configure script everytime: One now can use ``perl Configure
9583 <id>:<details>'', i.e. platform ids are allowed to have details appended
9584 to them (seperated by colons). This is treated as there would be a static
9585 pre-configured entry in Configure's %table under key <id> with value
9586 <details> and ``perl Configure <id>'' is called. So, when you want to
9587 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
9588 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
9589 now, which overrides the FreeBSD-elf entry on-the-fly.
9590 [Ralf S. Engelschall]
9592 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9595 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9596 on the `perl Configure ...' command line. This way one can compile
9597 OpenSSL libraries with Position Independent Code (PIC) which is needed
9598 for linking it into DSOs.
9599 [Ralf S. Engelschall]
9601 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9605 *) Cleaned up the LICENSE document: The official contact for any license
9606 questions now is the OpenSSL core team under openssl-core@openssl.org.
9607 And add a paragraph about the dual-license situation to make sure people
9608 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9609 to the OpenSSL toolkit.
9610 [Ralf S. Engelschall]
9612 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9613 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9614 Additonally cleaned up the `make links' target: Remove unnecessary
9615 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9616 to speed processing and no longer clutter the display with confusing
9617 stuff. Instead only the actually done links are displayed.
9618 [Ralf S. Engelschall]
9620 *) Permit null encryption ciphersuites, used for authentication only. It used
9621 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9622 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9626 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9627 signed attributes when verifying signatures (this would break them),
9628 the detached data encoding was wrong and public keys obtained using
9629 X509_get_pubkey() weren't freed.
9632 *) Add text documentation for the BUFFER functions. Also added a work around
9633 to a Win95 console bug. This was triggered by the password read stuff: the
9634 last character typed gets carried over to the next fread(). If you were
9635 generating a new cert request using 'req' for example then the last
9636 character of the passphrase would be CR which would then enter the first
9640 *) Added the new `Includes OpenSSL Cryptography Software' button as
9641 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9642 button and can be used by applications based on OpenSSL to show the
9643 relationship to the OpenSSL project.
9644 [Ralf S. Engelschall]
9646 *) Remove confusing variables in function signatures in files
9647 ssl/ssl_lib.c and ssl/ssl.h.
9648 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9650 *) Don't install bss_file.c under PREFIX/include/
9651 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9653 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9654 functions that return function pointers and has support for NT specific
9655 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9656 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9657 unsigned to signed types: this was killing the Win32 compile.
9660 *) Add new certificate file to stack functions,
9661 SSL_add_dir_cert_subjects_to_stack() and
9662 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9663 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9664 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9665 This means that Apache-SSL and similar packages don't have to mess around
9666 to add as many CAs as they want to the preferred list.
9669 *) Experiment with doxygen documentation. Currently only partially applied to
9671 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9672 openssl.doxy as the configuration file.
9675 *) Get rid of remaining C++-style comments which strict C compilers hate.
9676 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9678 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9679 compiled in by default: it has problems with large keys.
9682 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9683 DH private keys and/or callback functions which directly correspond to
9684 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9685 is needed for applications which have to configure certificates on a
9686 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9688 For the RSA certificate situation is makes no difference, but
9689 for the DSA certificate situation this fixes the "no shared cipher"
9690 problem where the OpenSSL cipher selection procedure failed because the
9691 temporary keys were not overtaken from the context and the API provided
9692 no way to reconfigure them.
9693 The new functions now let applications reconfigure the stuff and they
9694 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9695 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9696 non-public-API function ssl_cert_instantiate() is used as a helper
9697 function and also to reduce code redundancy inside ssl_rsa.c.
9698 [Ralf S. Engelschall]
9700 *) Move s_server -dcert and -dkey options out of the undocumented feature
9701 area because they are useful for the DSA situation and should be
9702 recognized by the users.
9703 [Ralf S. Engelschall]
9705 *) Fix the cipher decision scheme for export ciphers: the export bits are
9706 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9707 SSL_EXP_MASK. So, the original variable has to be used instead of the
9708 already masked variable.
9709 [Richard Levitte <levitte@stacken.kth.se>]
9711 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9712 [Richard Levitte <levitte@stacken.kth.se>]
9714 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9715 from `int' to `unsigned int' because it's a length and initialized by
9716 EVP_DigestFinal() which expects an `unsigned int *'.
9717 [Richard Levitte <levitte@stacken.kth.se>]
9719 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9720 script. Instead use the usual Shell->Perl transition trick.
9721 [Ralf S. Engelschall]
9723 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9724 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9725 -noout -modulus' as it's already the case for `openssl rsa -noout
9726 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9727 currently the public key is printed (a decision which was already done by
9728 `openssl dsa -modulus' in the past) which serves a similar purpose.
9729 Additionally the NO_RSA no longer completely removes the whole -modulus
9730 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9732 [Ralf S. Engelschall]
9734 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9735 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9736 [Arne Ansper <arne@ats.cyber.ee>]
9738 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9739 to be added. Now both 'req' and 'ca' can use new objects defined in the
9743 *) Add cool BIO that does syslog (or event log on NT).
9744 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9746 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9747 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9748 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9749 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9752 *) Add preliminary config info for new extension code.
9755 *) Make RSA_NO_PADDING really use no padding.
9756 [Ulf Moeller <ulf@fitug.de>]
9758 *) Generate errors when private/public key check is done.
9761 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9762 for some CRL extensions and new objects added.
9765 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9766 key usage extension and fuller support for authority key id.
9769 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9770 padding method for RSA, which is recommended for new applications in PKCS
9771 #1 v2.0 (RFC 2437, October 1998).
9772 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9773 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9774 against Bleichbacher's attack on RSA.
9775 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9778 *) Updates to the new SSL compression code
9779 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9781 *) Fix so that the version number in the master secret, when passed
9782 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9783 (because the server will not accept higher), that the version number
9784 is 0x03,0x01, not 0x03,0x00
9785 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9787 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9788 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9789 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9792 *) Support for RAW extensions where an arbitrary extension can be
9793 created by including its DER encoding. See apps/openssl.cnf for
9797 *) Make sure latest Perl versions don't interpret some generated C array
9798 code as Perl array code in the crypto/err/err_genc.pl script.
9799 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9801 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9802 not many people have the assembler. Various Win32 compilation fixes and
9803 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9807 *) Modify configure script 'Configure' to automatically create crypto/date.h
9808 file under Win32 and also build pem.h from pem.org. New script
9809 util/mkfiles.pl to create the MINFO file on environments that can't do a
9810 'make files': perl util/mkfiles.pl >MINFO should work.
9813 *) Major rework of DES function declarations, in the pursuit of correctness
9814 and purity. As a result, many evil casts evaporated, and some weirdness,
9815 too. You may find this causes warnings in your code. Zapping your evil
9816 casts will probably fix them. Mostly.
9819 *) Fix for a typo in asn1.h. Bug fix to object creation script
9820 obj_dat.pl. It considered a zero in an object definition to mean
9821 "end of object": none of the objects in objects.h have any zeros
9822 so it wasn't spotted.
9823 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9825 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9826 Masking (CBCM). In the absence of test vectors, the best I have been able
9827 to do is check that the decrypt undoes the encrypt, so far. Send me test
9828 vectors if you have them.
9831 *) Correct calculation of key length for export ciphers (too much space was
9832 allocated for null ciphers). This has not been tested!
9835 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9836 message is now correct (it understands "crypto" and "ssl" on its
9837 command line). There is also now an "update" option. This will update
9838 the util/ssleay.num and util/libeay.num files with any new functions.
9840 perl util/mkdef.pl crypto ssl update
9841 it will update them.
9844 *) Overhauled the Perl interface (perl/*):
9845 - ported BN stuff to OpenSSL's different BN library
9846 - made the perl/ source tree CVS-aware
9847 - renamed the package from SSLeay to OpenSSL (the files still contain
9848 their history because I've copied them in the repository)
9849 - removed obsolete files (the test scripts will be replaced
9850 by better Test::Harness variants in the future)
9851 [Ralf S. Engelschall]
9853 *) First cut for a very conservative source tree cleanup:
9854 1. merge various obsolete readme texts into doc/ssleay.txt
9855 where we collect the old documents and readme texts.
9856 2. remove the first part of files where I'm already sure that we no
9857 longer need them because of three reasons: either they are just temporary
9858 files which were left by Eric or they are preserved original files where
9859 I've verified that the diff is also available in the CVS via "cvs diff
9860 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9861 the crypto/md/ stuff).
9862 [Ralf S. Engelschall]
9864 *) More extension code. Incomplete support for subject and issuer alt
9865 name, issuer and authority key id. Change the i2v function parameters
9866 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9867 what that's for :-) Fix to ASN1 macro which messed up
9868 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9871 *) Preliminary support for ENUMERATED type. This is largely copied from the
9875 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9876 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9878 *) Make sure `make rehash' target really finds the `openssl' program.
9879 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9881 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9882 like to hear about it if this slows down other processors.
9885 *) Add CygWin32 platform information to Configure script.
9886 [Alan Batie <batie@aahz.jf.intel.com>]
9888 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9889 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9891 *) New program nseq to manipulate netscape certificate sequences
9894 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9898 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9899 but the BN code had some problems that would cause failures when
9900 doing certificate verification and some other functions.
9901 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9903 *) Add ASN1 and PEM code to support netscape certificate sequences.
9906 *) Add ASN1 and PEM code to support netscape certificate sequences.
9909 *) Add several PKIX and private extended key usage OIDs.
9912 *) Modify the 'ca' program to handle the new extension code. Modify
9913 openssl.cnf for new extension format, add comments.
9916 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9917 and add a sample to openssl.cnf so req -x509 now adds appropriate
9921 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9922 error code, add initial support to X509_print() and x509 application.
9925 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9926 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9927 stuff is currently isolated and isn't even compiled yet.
9930 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9931 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9932 Removed the versions check from X509 routines when loading extensions:
9933 this allows certain broken certificates that don't set the version
9934 properly to be processed.
9937 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9938 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9939 can still be regenerated with "make depend".
9942 *) Spelling mistake in C version of CAST-128.
9943 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9945 *) Changes to the error generation code. The perl script err-code.pl
9946 now reads in the old error codes and retains the old numbers, only
9947 adding new ones if necessary. It also only changes the .err files if new
9948 codes are added. The makefiles have been modified to only insert errors
9949 when needed (to avoid needlessly modifying header files). This is done
9950 by only inserting errors if the .err file is newer than the auto generated
9951 C file. To rebuild all the error codes from scratch (the old behaviour)
9952 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9953 or delete all the .err files.
9956 *) CAST-128 was incorrectly implemented for short keys. The C version has
9957 been fixed, but is untested. The assembler versions are also fixed, but
9958 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9959 to regenerate it if needed.
9960 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9961 Hagino <itojun@kame.net>]
9963 *) File was opened incorrectly in randfile.c.
9964 [Ulf Möller <ulf@fitug.de>]
9966 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9967 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9968 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9969 al: it's just almost always a UTCTime. Note this patch adds new error
9970 codes so do a "make errors" if there are problems.
9973 *) Correct Linux 1 recognition in config.
9974 [Ulf Möller <ulf@fitug.de>]
9976 *) Remove pointless MD5 hash when using DSA keys in ca.
9977 [Anonymous <nobody@replay.com>]
9979 *) Generate an error if given an empty string as a cert directory. Also
9980 generate an error if handed NULL (previously returned 0 to indicate an
9981 error, but didn't set one).
9982 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9984 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9987 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9988 parameters. This was causing a warning which killed off the Win32 compile.
9991 *) Remove C++ style comments from crypto/bn/bn_local.h.
9992 [Neil Costigan <neil.costigan@celocom.com>]
9994 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9995 based on a text string, looking up short and long names and finally
9996 "dot" format. The "dot" format stuff didn't work. Added new function
9997 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9998 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9999 OID is not part of the table.
10002 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
10003 X509_LOOKUP_by_alias().
10006 *) Sort openssl functions by name.
10009 *) Get the gendsa program working (hopefully) and add it to app list. Remove
10010 encryption from sample DSA keys (in case anyone is interested the password
10014 *) Make _all_ *_free functions accept a NULL pointer.
10015 [Frans Heymans <fheymans@isaserver.be>]
10017 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
10019 [Anonymous <nobody@replay.com>]
10021 *) s_server should send the CAfile as acceptable CAs, not its own cert.
10022 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10024 *) Don't blow it for numeric -newkey arguments to apps/req.
10025 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
10027 *) Temp key "for export" tests were wrong in s3_srvr.c.
10028 [Anonymous <nobody@replay.com>]
10030 *) Add prototype for temp key callback functions
10031 SSL_CTX_set_tmp_{rsa,dh}_callback().
10034 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
10035 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
10038 *) X509_name_add_entry() freed the wrong thing after an error.
10039 [Arne Ansper <arne@ats.cyber.ee>]
10041 *) rsa_eay.c would attempt to free a NULL context.
10042 [Arne Ansper <arne@ats.cyber.ee>]
10044 *) BIO_s_socket() had a broken should_retry() on Windoze.
10045 [Arne Ansper <arne@ats.cyber.ee>]
10047 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
10048 [Arne Ansper <arne@ats.cyber.ee>]
10050 *) Make sure the already existing X509_STORE->depth variable is initialized
10051 in X509_STORE_new(), but document the fact that this variable is still
10052 unused in the certificate verification process.
10053 [Ralf S. Engelschall]
10055 *) Fix the various library and apps files to free up pkeys obtained from
10056 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
10059 *) Fix reference counting in X509_PUBKEY_get(). This makes
10060 demos/maurice/example2.c work, amongst others, probably.
10061 [Steve Henson and Ben Laurie]
10063 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
10064 `openssl' and second, the shortcut symlinks for the `openssl <command>'
10065 are no longer created. This way we have a single and consistent command
10066 line interface `openssl <command>', similar to `cvs <command>'.
10067 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
10069 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
10070 BIT STRING wrapper always have zero unused bits.
10073 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
10076 *) Make the top-level INSTALL documentation easier to understand.
10079 *) Makefiles updated to exit if an error occurs in a sub-directory
10080 make (including if user presses ^C) [Paul Sutton]
10082 *) Make Montgomery context stuff explicit in RSA data structure.
10085 *) Fix build order of pem and err to allow for generated pem.h.
10088 *) Fix renumbering bug in X509_NAME_delete_entry().
10091 *) Enhanced the err-ins.pl script so it makes the error library number
10092 global and can add a library name. This is needed for external ASN1 and
10093 other error libraries.
10096 *) Fixed sk_insert which never worked properly.
10099 *) Fix ASN1 macros so they can handle indefinite length construted
10100 EXPLICIT tags. Some non standard certificates use these: they can now
10104 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
10105 into a single doc/ssleay.txt bundle. This way the information is still
10106 preserved but no longer messes up this directory. Now it's new room for
10107 the new set of documenation files.
10108 [Ralf S. Engelschall]
10110 *) SETs were incorrectly DER encoded. This was a major pain, because they
10111 shared code with SEQUENCEs, which aren't coded the same. This means that
10112 almost everything to do with SETs or SEQUENCEs has either changed name or
10113 number of arguments.
10114 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
10116 *) Fix test data to work with the above.
10119 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
10120 was already fixed by Eric for 0.9.1 it seems.
10121 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
10123 *) Autodetect FreeBSD3.
10126 *) Fix various bugs in Configure. This affects the following platforms:
10130 unixware-2.0-pentium
10134 *) Eliminate generated files from CVS. Reorder tests to regenerate files
10135 before they are needed.
10138 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10142 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10144 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10145 changed SSLeay to OpenSSL in version strings.
10146 [Ralf S. Engelschall]
10148 *) Some fixups to the top-level documents.
10151 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10152 because the symlink to include/ was missing.
10153 [Ralf S. Engelschall]
10155 *) Incorporated the popular no-RSA/DSA-only patches
10156 which allow to compile a RSA-free SSLeay.
10157 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10159 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10160 when "ssleay" is still not found.
10161 [Ralf S. Engelschall]
10163 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10164 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10166 *) Updated the README file.
10167 [Ralf S. Engelschall]
10169 *) Added various .cvsignore files in the CVS repository subdirs
10170 to make a "cvs update" really silent.
10171 [Ralf S. Engelschall]
10173 *) Recompiled the error-definition header files and added
10174 missing symbols to the Win32 linker tables.
10175 [Ralf S. Engelschall]
10177 *) Cleaned up the top-level documents;
10178 o new files: CHANGES and LICENSE
10179 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10180 o merged COPYRIGHT into LICENSE
10181 o removed obsolete TODO file
10182 o renamed MICROSOFT to INSTALL.W32
10183 [Ralf S. Engelschall]
10185 *) Removed dummy files from the 0.9.1b source tree:
10186 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10187 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10188 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10189 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10190 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10191 [Ralf S. Engelschall]
10193 *) Added various platform portability fixes.
10196 *) The Genesis of the OpenSSL rpject:
10197 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10198 Young and Tim J. Hudson created while they were working for C2Net until
10200 [The OpenSSL Project]
10203 Changes between 0.9.0b and 0.9.1b [not released]
10205 *) Updated a few CA certificates under certs/
10208 *) Changed some BIGNUM api stuff.
10211 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10212 DGUX x86, Linux Alpha, etc.
10215 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10216 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10220 *) Add -strparse option to asn1pars program which parses nested
10222 [Dr Stephen Henson <shenson@bigfoot.com>]
10224 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10227 *) DSA fix for "ca" program.
10230 *) Added "-genkey" option to "dsaparam" program.
10233 *) Added RIPE MD160 (rmd160) message digest.
10236 *) Added -a (all) option to "ssleay version" command.
10239 *) Added PLATFORM define which is the id given to Configure.
10242 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10245 *) Extended the ASN.1 parser routines.
10248 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10251 *) Added a BN_CTX to the BN library.
10254 *) Fixed the weak key values in DES library
10257 *) Changed API in EVP library for cipher aliases.
10260 *) Added support for RC2/64bit cipher.
10263 *) Converted the lhash library to the crypto/mem.c functions.
10266 *) Added more recognized ASN.1 object ids.
10269 *) Added more RSA padding checks for SSL/TLS.
10272 *) Added BIO proxy/filter functionality.
10275 *) Added extra_certs to SSL_CTX which can be used
10276 send extra CA certificates to the client in the CA cert chain sending
10277 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10280 *) Now Fortezza is denied in the authentication phase because
10281 this is key exchange mechanism is not supported by SSLeay at all.
10284 *) Additional PKCS1 checks.
10287 *) Support the string "TLSv1" for all TLS v1 ciphers.
10290 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10291 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10294 *) Fixed a few memory leaks.
10297 *) Fixed various code and comment typos.
10300 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10301 bytes sent in the client random.
10302 [Edward Bishop <ebishop@spyglass.com>]
projects / thirdparty / openssl.git / blob