5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Enhance SSL/TLS certificate chain handling to support different
8 chains for each certificate instead of one chain in the parent SSL_CTX.
11 *) Support for fixed DH ciphersuite client authentication: where both
12 server and client use DH certificates with common parameters.
15 *) Support for fixed DH ciphersuites: those requiring DH server
19 *) Transparently support X9.42 DH parameters when calling
20 PEM_read_bio_DHparameters. This means existing applications can handle
21 the new parameter format automatically.
24 *) Initial experimental support for X9.42 DH parameter format: mainly
25 to support use of 'q' parameter for RFC5114 parameters.
28 *) Add DH parameters from RFC5114 including test data to dhtest.
31 *) Update fips_test_suite to support multiple command line options. New
32 test to induce all self test errors in sequence and check expected
36 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
37 sign or verify all in one operation.
40 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
41 test programs and fips_test_suite. Includes functionality to parse
42 the minimal script output of fipsalgest.pl directly.
45 *) Add authorisation parameter to FIPS_module_mode_set().
48 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
51 *) Use separate DRBG fields for internal and external flags. New function
52 FIPS_drbg_health_check() to perform on demand health checking. Add
53 generation tests to fips_test_suite with reduced health check interval to
54 demonstrate periodic health checking. Add "nodh" option to
55 fips_test_suite to skip very slow DH test.
58 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
62 *) More extensive health check for DRBG checking many more failure modes.
63 New function FIPS_selftest_drbg_all() to handle every possible DRBG
64 combination: call this in fips_test_suite.
67 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
68 and POST to handle Dual EC cases.
71 *) Add support for canonical generation of DSA parameter 'g'. See
74 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
75 POST to handle HMAC cases.
78 *) Add functions FIPS_module_version() and FIPS_module_version_text()
79 to return numberical and string versions of the FIPS module number.
82 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
83 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
84 outside the validated module in the FIPS capable OpenSSL.
87 *) Minor change to DRBG entropy callback semantics. In some cases
88 there is no mutiple of the block length between min_len and
89 max_len. Allow the callback to return more than max_len bytes
90 of entropy but discard any extra: it is the callback's responsibility
91 to ensure that the extra data discarded does not impact the
92 requested amount of entropy.
95 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
96 information in FIPS186-3, SP800-57 and SP800-131A.
99 *) CCM support via EVP. Interface is very similar to GCM case except we
100 must supply all data in one chunk (i.e. no update, final) and the
101 message length must be supplied if AAD is used. Add algorithm test
105 *) Initial version of POST overhaul. Add POST callback to allow the status
106 of POST to be monitored and/or failures induced. Modify fips_test_suite
107 to use callback. Always run all selftests even if one fails.
110 *) XTS support including algorithm test driver in the fips_gcmtest program.
111 Note: this does increase the maximum key length from 32 to 64 bytes but
112 there should be no binary compatibility issues as existing applications
113 will never use XTS mode.
116 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
117 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
118 performs algorithm blocking for unapproved PRNG types. Also do not
119 set PRNG type in FIPS_mode_set(): leave this to the application.
120 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
121 the standard OpenSSL PRNG: set additional data to a date time vector.
124 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
125 This shouldn't present any incompatibility problems because applications
126 shouldn't be using these directly and any that are will need to rethink
127 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
130 *) Extensive self tests and health checking required by SP800-90 DRBG.
131 Remove strength parameter from FIPS_drbg_instantiate and always
132 instantiate at maximum supported strength.
135 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
138 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
141 *) New function DH_compute_key_padded() to compute a DH key and pad with
142 leading zeroes if needed: this complies with SP800-56A et al.
145 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
146 anything, incomplete, subject to change and largely untested at present.
149 *) Modify fipscanisteronly build option to only build the necessary object
150 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
153 *) Add experimental option FIPSSYMS to give all symbols in
154 fipscanister.o and FIPS or fips prefix. This will avoid
155 conflicts with future versions of OpenSSL. Add perl script
156 util/fipsas.pl to preprocess assembly language source files
157 and rename any affected symbols.
160 *) Add selftest checks and algorithm block of non-fips algorithms in
161 FIPS mode. Remove DES2 from selftests.
164 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
165 return internal method without any ENGINE dependencies. Add new
166 tiny fips sign and verify functions.
169 *) New build option no-ec2m to disable characteristic 2 code.
172 *) New build option "fipscanisteronly". This only builds fipscanister.o
173 and (currently) associated fips utilities. Uses the file Makefile.fips
174 instead of Makefile.org as the prototype.
177 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
178 Update fips_gcmtest to use IV generator.
181 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
182 setting output buffer to NULL. The *Final function must be
183 called although it will not retrieve any additional data. The tag
184 can be set or retrieved with a ctrl. The IV length is by default 12
185 bytes (96 bits) but can be set to an alternative value. If the IV
186 length exceeds the maximum IV length (currently 16 bytes) it cannot be
190 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
191 underlying do_cipher function handles all cipher semantics itself
192 including padding and finalisation. This is useful if (for example)
193 an ENGINE cipher handles block padding itself. The behaviour of
194 do_cipher is subtly changed if this flag is set: the return value
195 is the number of characters written to the output buffer (zero is
196 no longer an error code) or a negative error code. Also if the
197 input buffer is NULL and length 0 finalisation should be performed.
200 *) If a candidate issuer certificate is already part of the constructed
201 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
204 *) Improve forward-security support: add functions
206 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
207 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
209 for use by SSL/TLS servers; the callback function will be called whenever a
210 new session is created, and gets to decide whether the session may be
211 cached to make it resumable (return 0) or not (return 1). (As by the
212 SSL/TLS protocol specifications, the session_id sent by the server will be
213 empty to indicate that the session is not resumable; also, the server will
214 not generate RFC 4507 (RFC 5077) session tickets.)
216 A simple reasonable callback implementation is to return is_forward_secure.
217 This parameter will be set to 1 or 0 depending on the ciphersuite selected
218 by the SSL/TLS server library, indicating whether it can provide forward
220 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
222 *) New function OPENSSL_gmtime_diff to find the difference in days
223 and seconds between two tm structures. This will be used to provide
224 additional functionality for ASN1_TIME.
227 *) Add -trusted_first option which attempts to find certificates in the
228 trusted store even if an untrusted chain is also supplied.
231 *) Initial experimental support for explicitly trusted non-root CAs.
232 OpenSSL still tries to build a complete chain to a root but if an
233 intermediate CA has a trust setting included that is used. The first
234 setting is used: whether to trust or reject.
237 *) New -verify_name option in command line utilities to set verification
241 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
242 Add CMAC pkey methods.
245 *) Experimental regnegotiation in s_server -www mode. If the client
246 browses /reneg connection is renegotiated. If /renegcert it is
247 renegotiated requesting a certificate.
250 *) Add an "external" session cache for debugging purposes to s_server. This
251 should help trace issues which normally are only apparent in deployed
252 multi-process servers.
255 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
256 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
257 BIO_set_cipher() and some obscure PEM functions were changed so they
258 can now return an error. The RAND changes required a change to the
259 RAND_METHOD structure.
262 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
263 a gcc attribute to warn if the result of a function is ignored. This
264 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
265 whose return value is often ignored.
268 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
270 *) Some servers which support TLS 1.0 can choke if we initially indicate
271 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
272 encrypted premaster secret. As a workaround use the maximum pemitted
273 client version in client hello, this should keep such servers happy
274 and still work with previous versions of OpenSSL.
277 *) Add support for TLS/DTLS heartbeats.
278 [Robin Seggelmann <seggelmann@fh-muenster.de>]
280 *) Add support for SCTP.
281 [Robin Seggelmann <seggelmann@fh-muenster.de>]
283 *) Improved PRNG seeding for VOS.
284 [Paul Green <Paul.Green@stratus.com>]
286 *) Extensive assembler packs updates, most notably:
288 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
289 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
290 - x86_64: bit-sliced AES implementation;
291 - ARM: NEON support, contemporary platforms optimizations;
292 - s390x: z196 support;
293 - *: GHASH and GF(2^m) multiplication implementations;
297 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
298 (removal of unnecessary code)
299 [Peter Sylvester <peter.sylvester@edelweb.fr>]
301 *) Add TLS key material exporter from RFC 5705.
304 *) Add DTLS-SRTP negotiation from RFC 5764.
307 *) Add Next Protocol Negotiation,
308 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
309 disabled with a no-npn flag to config or Configure. Code donated
311 [Adam Langley <agl@google.com> and Ben Laurie]
313 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
314 NIST-P256, NIST-P521, with constant-time single point multiplication on
315 typical inputs. Compiler support for the nonstandard type __uint128_t is
316 required to use this (present in gcc 4.4 and later, for 64-bit builds).
317 Code made available under Apache License version 2.0.
319 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
320 line to include this in your build of OpenSSL, and run "make depend" (or
321 "make update"). This enables the following EC_METHODs:
323 EC_GFp_nistp224_method()
324 EC_GFp_nistp256_method()
325 EC_GFp_nistp521_method()
327 EC_GROUP_new_by_curve_name() will automatically use these (while
328 EC_GROUP_new_curve_GFp() currently prefers the more flexible
330 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
332 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
333 all platforms. Move ssize_t definition from e_os.h to the public
334 header file e_os2.h as it now appears in public header file cms.h
337 *) New -sigopt option to the ca, req and x509 utilities. Additional
338 signature parameters can be passed using this option and in
342 *) Add RSA PSS signing function. This will generate and set the
343 appropriate AlgorithmIdentifiers for PSS based on those in the
344 corresponding EVP_MD_CTX structure. No application support yet.
347 *) Support for companion algorithm specific ASN1 signing routines.
348 New function ASN1_item_sign_ctx() signs a pre-initialised
349 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
350 the appropriate parameters.
353 *) Add new algorithm specific ASN1 verification initialisation function
354 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
355 handling will be the same no matter what EVP_PKEY_METHOD is used.
356 Add a PSS handler to support verification of PSS signatures: checked
357 against a number of sample certificates.
360 *) Add signature printing for PSS. Add PSS OIDs.
361 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
363 *) Add algorithm specific signature printing. An individual ASN1 method
364 can now print out signatures instead of the standard hex dump.
366 More complex signatures (e.g. PSS) can print out more meaningful
367 information. Include DSA version that prints out the signature
371 *) Password based recipient info support for CMS library: implementing
375 *) Split password based encryption into PBES2 and PBKDF2 functions. This
376 neatly separates the code into cipher and PBE sections and is required
377 for some algorithms that split PBES2 into separate pieces (such as
381 *) Session-handling fixes:
382 - Fix handling of connections that are resuming with a session ID,
383 but also support Session Tickets.
384 - Fix a bug that suppressed issuing of a new ticket if the client
385 presented a ticket with an expired session.
386 - Try to set the ticket lifetime hint to something reasonable.
387 - Make tickets shorter by excluding irrelevant information.
388 - On the client side, don't ignore renewed tickets.
389 [Adam Langley, Bodo Moeller (Google)]
391 *) Fix PSK session representation.
394 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
396 This work was sponsored by Intel.
399 *) Add GCM support to TLS library. Some custom code is needed to split
400 the IV between the fixed (from PRF) and explicit (from TLS record)
401 portions. This adds all GCM ciphersuites supported by RFC5288 and
402 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
403 add a special AESGCM string for GCM only.
406 *) Expand range of ctrls for AES GCM. Permit setting invocation
407 field on decrypt and retrieval of invocation field only on encrypt.
410 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
411 As required by RFC5289 these ciphersuites cannot be used if for
412 versions of TLS earlier than 1.2.
415 *) For FIPS capable OpenSSL interpret a NULL default public key method
416 as unset and return the appopriate default but do *not* set the default.
417 This means we can return the appopriate method in applications that
418 swicth between FIPS and non-FIPS modes.
421 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
422 ENGINE is used then we cannot handle that in the FIPS module so we
423 keep original code iff non-FIPS operations are allowed.
426 *) Add -attime option to openssl utilities.
427 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
429 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
432 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
433 FIPS EC methods unconditionally for now.
436 *) New build option no-ec2m to disable characteristic 2 code.
439 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
440 all cases can be covered as some introduce binary incompatibilities.
443 *) Redirect RSA operations to FIPS module including keygen,
444 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
447 *) Add similar low level API blocking to ciphers.
450 *) Low level digest APIs are not approved in FIPS mode: any attempt
451 to use these will cause a fatal error. Applications that *really* want
452 to use them can use the private_* version instead.
455 *) Redirect cipher operations to FIPS module for FIPS builds.
458 *) Redirect digest operations to FIPS module for FIPS builds.
461 *) Update build system to add "fips" flag which will link in fipscanister.o
462 for static and shared library builds embedding a signature if needed.
465 *) Output TLS supported curves in preference order instead of numerical
466 order. This is currently hardcoded for the highest order curves first.
467 This should be configurable so applications can judge speed vs strength.
470 *) Add TLS v1.2 server support for client authentication.
473 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
477 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
478 FIPS modules versions.
481 *) Add TLS v1.2 client side support for client authentication. Keep cache
482 of handshake records longer as we don't know the hash algorithm to use
483 until after the certificate request message is received.
486 *) Initial TLS v1.2 client support. Add a default signature algorithms
487 extension including all the algorithms we support. Parse new signature
488 format in client key exchange. Relax some ECC signing restrictions for
489 TLS v1.2 as indicated in RFC5246.
492 *) Add server support for TLS v1.2 signature algorithms extension. Switch
493 to new signature format when needed using client digest preference.
494 All server ciphersuites should now work correctly in TLS v1.2. No client
495 support yet and no support for client certificates.
498 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
499 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
500 ciphersuites. At present only RSA key exchange ciphersuites work with
501 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
502 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
503 and version checking.
506 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
507 with this defined it will not be affected by any changes to ssl internal
508 structures. Add several utility functions to allow openssl application
509 to work with OPENSSL_NO_SSL_INTERN defined.
513 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
515 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
518 *) Permit abbreviated handshakes when renegotiating using the function
519 SSL_renegotiate_abbreviated().
520 [Robin Seggelmann <seggelmann@fh-muenster.de>]
522 *) Add call to ENGINE_register_all_complete() to
523 ENGINE_load_builtin_engines(), so some implementations get used
524 automatically instead of needing explicit application support.
527 *) Add support for TLS key exporter as described in RFC5705.
528 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
530 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
531 a few changes are required:
533 Add SSL_OP_NO_TLSv1_1 flag.
535 Update version checking logic to handle version 1.1.
536 Add explicit IV handling (ported from DTLS code).
537 Add command line options to s_client/s_server.
540 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
542 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
543 Thanks to Antonio Martin, Enterprise Secure Access Research and
544 Development, Cisco Systems, Inc. for discovering this bug and
545 preparing a fix. (CVE-2012-0050)
548 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
550 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
551 of the Vaudenay padding oracle attack on CBC mode encryption
552 which enables an efficient plaintext recovery attack against
553 the OpenSSL implementation of DTLS. Their attack exploits timing
554 differences arising during decryption processing. A research
555 paper describing this attack can be found at:
556 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
557 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
558 Security Group at Royal Holloway, University of London
559 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
560 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
561 for preparing the fix. (CVE-2011-4108)
562 [Robin Seggelmann, Michael Tuexen]
564 *) Clear bytes used for block padding of SSL 3.0 records.
566 [Adam Langley (Google)]
568 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
569 Kadianakis <desnacked@gmail.com> for discovering this issue and
570 Adam Langley for preparing the fix. (CVE-2011-4619)
571 [Adam Langley (Google)]
573 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
574 [Andrey Kulikov <amdeich@gmail.com>]
576 *) Prevent malformed RFC3779 data triggering an assertion failure.
577 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
578 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
579 [Rob Austein <sra@hactrn.net>]
581 *) Improved PRNG seeding for VOS.
582 [Paul Green <Paul.Green@stratus.com>]
584 *) Fix ssl_ciph.c set-up race.
585 [Adam Langley (Google)]
587 *) Fix spurious failures in ecdsatest.c.
588 [Emilia Käsper (Google)]
590 *) Fix the BIO_f_buffer() implementation (which was mixing different
591 interpretations of the '..._len' fields).
592 [Adam Langley (Google)]
594 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
595 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
596 threads won't reuse the same blinding coefficients.
598 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
599 lock to call BN_BLINDING_invert_ex, and avoids one use of
600 BN_BLINDING_update for each BN_BLINDING structure (previously,
601 the last update always remained unused).
602 [Emilia Käsper (Google)]
604 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
605 [Bob Buckholz (Google)]
607 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
609 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
610 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
611 [Kaspar Brand <ossl@velox.ch>]
613 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
614 for multi-threaded use of ECDH. (CVE-2011-3210)
615 [Adam Langley (Google)]
617 *) Fix x509_name_ex_d2i memory leak on bad inputs.
620 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
621 signature public key algorithm by using OID xref utilities instead.
622 Before this you could only use some ECC ciphersuites with SHA1 only.
625 *) Add protection against ECDSA timing attacks as mentioned in the paper
626 by Billy Bob Brumley and Nicola Tuveri, see:
628 http://eprint.iacr.org/2011/232.pdf
630 [Billy Bob Brumley and Nicola Tuveri]
632 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
634 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
635 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
637 *) Fix bug in string printing code: if *any* escaping is enabled we must
638 escape the escape character (backslash) or the resulting string is
642 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
644 *) Disable code workaround for ancient and obsolete Netscape browsers
645 and servers: an attacker can use it in a ciphersuite downgrade attack.
646 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
649 *) Fixed J-PAKE implementation error, originally discovered by
650 Sebastien Martini, further info and confirmation from Stefan
651 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
654 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
656 *) Fix extension code to avoid race conditions which can result in a buffer
657 overrun vulnerability: resumed sessions must not be modified as they can
658 be shared by multiple threads. CVE-2010-3864
661 *) Fix WIN32 build system to correctly link an ENGINE directory into
665 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
667 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
669 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
671 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
673 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
674 context. The operation can be customised via the ctrl mechanism in
675 case ENGINEs want to include additional functionality.
678 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
681 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
682 output hashes compatible with older versions of OpenSSL.
683 [Willy Weisz <weisz@vcpc.univie.ac.at>]
685 *) Fix compression algorithm handling: if resuming a session use the
686 compression algorithm of the resumed session instead of determining
687 it from client hello again. Don't allow server to change algorithm.
690 *) Add load_crls() function to apps tidying load_certs() too. Add option
691 to verify utility to allow additional CRLs to be included.
694 *) Update OCSP request code to permit adding custom headers to the request:
695 some responders need this.
698 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
700 [Julia Lawall <julia@diku.dk>]
702 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
703 needlessly dereferenced structures, used obsolete functions and
704 didn't handle all updated verify codes correctly.
707 *) Disable MD2 in the default configuration.
710 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
711 indicate the initial BIO being pushed or popped. This makes it possible
712 to determine whether the BIO is the one explicitly called or as a result
713 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
714 it handles reference counts correctly and doesn't zero out the I/O bio
715 when it is not being explicitly popped. WARNING: applications which
716 included workarounds for the old buggy behaviour will need to be modified
717 or they could free up already freed BIOs.
720 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
721 renaming to all platforms (within the 0.9.8 branch, this was
722 done conditionally on Netware platforms to avoid a name clash).
723 [Guenter <lists@gknw.net>]
725 *) Add ECDHE and PSK support to DTLS.
726 [Michael Tuexen <tuexen@fh-muenster.de>]
728 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
732 *) Add "missing" function EVP_MD_flags() (without this the only way to
733 retrieve a digest flags is by accessing the structure directly. Update
734 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
735 or cipher is registered as in the "from" argument. Print out all
736 registered digests in the dgst usage message instead of manually
737 attempting to work them out.
740 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
741 this allows the use of compression and extensions. Change default cipher
742 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
743 by default unless an application cipher string requests it.
746 *) Alter match criteria in PKCS12_parse(). It used to try to use local
747 key ids to find matching certificates and keys but some PKCS#12 files
748 don't follow the (somewhat unwritten) rules and this strategy fails.
749 Now just gather all certificates together and the first private key
750 then look for the first certificate that matches the key.
753 *) Support use of registered digest and cipher names for dgst and cipher
754 commands instead of having to add each one as a special case. So now
761 openssl dgst -sha256 foo
763 and this works for ENGINE based algorithms too.
767 *) Update Gost ENGINE to support parameter files.
768 [Victor B. Wagner <vitus@cryptocom.ru>]
770 *) Support GeneralizedTime in ca utility.
771 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
773 *) Enhance the hash format used for certificate directory links. The new
774 form uses the canonical encoding (meaning equivalent names will work
775 even if they aren't identical) and uses SHA1 instead of MD5. This form
776 is incompatible with the older format and as a result c_rehash should
777 be used to rebuild symbolic links.
780 *) Make PKCS#8 the default write format for private keys, replacing the
781 traditional format. This form is standardised, more secure and doesn't
782 include an implicit MD5 dependency.
785 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
786 committed to OpenSSL should pass this lot as a minimum.
789 *) Add session ticket override functionality for use by EAP-FAST.
790 [Jouni Malinen <j@w1.fi>]
792 *) Modify HMAC functions to return a value. Since these can be implemented
793 in an ENGINE errors can occur.
796 *) Type-checked OBJ_bsearch_ex.
799 *) Type-checked OBJ_bsearch. Also some constification necessitated
800 by type-checking. Still to come: TXT_DB, bsearch(?),
801 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
805 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
806 seconds to a tm structure directly, instead of going through OS
807 specific date routines. This avoids any issues with OS routines such
808 as the year 2038 bug. New *_adj() functions for ASN1 time structures
809 and X509_time_adj_ex() to cover the extended range. The existing
810 X509_time_adj() is still usable and will no longer have any date issues.
813 *) Delta CRL support. New use deltas option which will attempt to locate
814 and search any appropriate delta CRLs available.
816 This work was sponsored by Google.
819 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
820 code and add additional score elements. Validate alternate CRL paths
821 as part of the CRL checking and indicate a new error "CRL path validation
822 error" in this case. Applications wanting additional details can use
823 the verify callback and check the new "parent" field. If this is not
824 NULL CRL path validation is taking place. Existing applications wont
825 see this because it requires extended CRL support which is off by
828 This work was sponsored by Google.
831 *) Support for freshest CRL extension.
833 This work was sponsored by Google.
836 *) Initial indirect CRL support. Currently only supported in the CRLs
837 passed directly and not via lookup. Process certificate issuer
838 CRL entry extension and lookup CRL entries by bother issuer name
839 and serial number. Check and process CRL issuer entry in IDP extension.
841 This work was sponsored by Google.
844 *) Add support for distinct certificate and CRL paths. The CRL issuer
845 certificate is validated separately in this case. Only enabled if
846 an extended CRL support flag is set: this flag will enable additional
847 CRL functionality in future.
849 This work was sponsored by Google.
852 *) Add support for policy mappings extension.
854 This work was sponsored by Google.
857 *) Fixes to pathlength constraint, self issued certificate handling,
858 policy processing to align with RFC3280 and PKITS tests.
860 This work was sponsored by Google.
863 *) Support for name constraints certificate extension. DN, email, DNS
864 and URI types are currently supported.
866 This work was sponsored by Google.
869 *) To cater for systems that provide a pointer-based thread ID rather
870 than numeric, deprecate the current numeric thread ID mechanism and
871 replace it with a structure and associated callback type. This
872 mechanism allows a numeric "hash" to be extracted from a thread ID in
873 either case, and on platforms where pointers are larger than 'long',
874 mixing is done to help ensure the numeric 'hash' is usable even if it
875 can't be guaranteed unique. The default mechanism is to use "&errno"
876 as a pointer-based thread ID to distinguish between threads.
878 Applications that want to provide their own thread IDs should now use
879 CRYPTO_THREADID_set_callback() to register a callback that will call
880 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
882 Note that ERR_remove_state() is now deprecated, because it is tied
883 to the assumption that thread IDs are numeric. ERR_remove_state(0)
884 to free the current thread's error state should be replaced by
885 ERR_remove_thread_state(NULL).
887 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
888 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
889 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
890 application was previously providing a numeric thread callback that
891 was inappropriate for distinguishing threads, then uniqueness might
892 have been obtained with &errno that happened immediately in the
893 intermediate development versions of OpenSSL; this is no longer the
894 case, the numeric thread callback will now override the automatic use
896 [Geoff Thorpe, with help from Bodo Moeller]
898 *) Initial support for different CRL issuing certificates. This covers a
899 simple case where the self issued certificates in the chain exist and
900 the real CRL issuer is higher in the existing chain.
902 This work was sponsored by Google.
905 *) Removed effectively defunct crypto/store from the build.
908 *) Revamp of STACK to provide stronger type-checking. Still to come:
909 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
910 ASN1_STRING, CONF_VALUE.
913 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
914 RAM on SSL connections. This option can save about 34k per idle SSL.
917 *) Revamp of LHASH to provide stronger type-checking. Still to come:
918 STACK, TXT_DB, bsearch, qsort.
921 *) Initial support for Cryptographic Message Syntax (aka CMS) based
922 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
923 support for data, signedData, compressedData, digestedData and
924 encryptedData, envelopedData types included. Scripts to check against
925 RFC4134 examples draft and interop and consistency checks of many
926 content types and variants.
929 *) Add options to enc utility to support use of zlib compression BIO.
932 *) Extend mk1mf to support importing of options and assembly language
933 files from Configure script, currently only included in VC-WIN32.
934 The assembly language rules can now optionally generate the source
935 files from the associated perl scripts.
938 *) Implement remaining functionality needed to support GOST ciphersuites.
939 Interop testing has been performed using CryptoPro implementations.
940 [Victor B. Wagner <vitus@cryptocom.ru>]
942 *) s390x assembler pack.
945 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
949 *) Implement Opaque PRF Input TLS extension as specified in
950 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
951 official specification yet and no extension type assignment by
952 IANA exists, this extension (for now) will have to be explicitly
953 enabled when building OpenSSL by providing the extension number
954 to use. For example, specify an option
956 -DTLSEXT_TYPE_opaque_prf_input=0x9527
958 to the "config" or "Configure" script to enable the extension,
959 assuming extension number 0x9527 (which is a completely arbitrary
960 and unofficial assignment based on the MD5 hash of the Internet
961 Draft). Note that by doing so, you potentially lose
962 interoperability with other TLS implementations since these might
963 be using the same extension number for other purposes.
965 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
966 opaque PRF input value to use in the handshake. This will create
967 an interal copy of the length-'len' string at 'src', and will
968 return non-zero for success.
970 To get more control and flexibility, provide a callback function
973 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
974 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
978 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
981 Callback function 'cb' will be called in handshakes, and is
982 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
983 Argument 'arg' is for application purposes (the value as given to
984 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
985 be provided to the callback function). The callback function
986 has to return non-zero to report success: usually 1 to use opaque
987 PRF input just if possible, or 2 to enforce use of the opaque PRF
988 input. In the latter case, the library will abort the handshake
989 if opaque PRF input is not successfully negotiated.
991 Arguments 'peerinput' and 'len' given to the callback function
992 will always be NULL and 0 in the case of a client. A server will
993 see the client's opaque PRF input through these variables if
994 available (NULL and 0 otherwise). Note that if the server
995 provides an opaque PRF input, the length must be the same as the
996 length of the client's opaque PRF input.
998 Note that the callback function will only be called when creating
999 a new session (session resumption can resume whatever was
1000 previously negotiated), and will not be called in SSL 2.0
1001 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1002 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1003 for applications that need to enforce opaque PRF input.
1007 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1010 [Victor B. Wagner <vitus@cryptocom.ru>]
1012 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1013 RFC4507bis. The encrypted ticket format is an encrypted encoded
1014 SSL_SESSION structure, that way new session features are automatically
1017 If a client application caches session in an SSL_SESSION structure
1018 support is transparent because tickets are now stored in the encoded
1021 The SSL_CTX structure automatically generates keys for ticket
1022 protection in servers so again support should be possible
1023 with no application modification.
1025 If a client or server wishes to disable RFC4507 support then the option
1026 SSL_OP_NO_TICKET can be set.
1028 Add a TLS extension debugging callback to allow the contents of any client
1029 or server extensions to be examined.
1031 This work was sponsored by Google.
1034 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1035 OpenSSL should now compile cleanly on gcc 4.2
1036 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1038 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1039 support including streaming MAC support: this is required for GOST
1040 ciphersuite support.
1041 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1043 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1044 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1045 to output in BER and PEM format.
1048 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1049 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1050 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1051 ENGINE support for HMAC keys which are unextractable. New -mac and
1052 -macopt options to dgst utility.
1055 *) New option -sigopt to dgst utility. Update dgst to use
1056 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1057 alternative signing paramaters such as X9.31 or PSS in the dgst
1061 *) Change ssl_cipher_apply_rule(), the internal function that does
1062 the work each time a ciphersuite string requests enabling
1063 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1064 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1065 the order of disabled ciphersuites such that those ciphersuites
1066 that most recently went from enabled to disabled not only stay
1067 in order with respect to each other, but also have higher priority
1068 than other disabled ciphersuites the next time ciphersuites are
1071 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1072 the same ciphersuites as with "HIGH" alone, but in a specific
1073 order where the PSK ciphersuites come first (since they are the
1074 most recently disabled ciphersuites when "HIGH" is parsed).
1076 Also, change ssl_create_cipher_list() (using this new
1077 funcionality) such that between otherwise identical
1078 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1082 *) Change ssl_create_cipher_list() so that it automatically
1083 arranges the ciphersuites in reasonable order before starting
1084 to process the rule string. Thus, the definition for "DEFAULT"
1085 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1086 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1087 This makes it much easier to arrive at a reasonable default order
1088 in applications for which anonymous ciphers are OK (meaning
1089 that you can't actually use DEFAULT).
1090 [Bodo Moeller; suggested by Victor Duchovni]
1092 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1093 processing) into multiple integers instead of setting
1094 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1095 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1096 (These masks as well as the individual bit definitions are hidden
1097 away into the non-exported interface ssl/ssl_locl.h, so this
1098 change to the definition of the SSL_CIPHER structure shouldn't
1099 affect applications.) This give us more bits for each of these
1100 categories, so there is no longer a need to coagulate AES128 and
1101 AES256 into a single algorithm bit, and to coagulate Camellia128
1102 and Camellia256 into a single algorithm bit, which has led to all
1105 Thus, among other things, the kludge introduced in 0.9.7m and
1106 0.9.8e for masking out AES256 independently of AES128 or masking
1107 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1109 With the change, we also introduce new ciphersuite aliases that
1110 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1114 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1115 Use the leftmost N bytes of the signature input if the input is
1116 larger than the prime q (with N being the size in bytes of q).
1119 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1120 it yet and it is largely untested.
1123 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1126 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1127 some compilers (gcc 4.2 and later) reject their use. Safestack is
1128 reimplemented. Update ASN1 to avoid use of legacy functions.
1131 *) Win32/64 targets are linked with Winsock2.
1134 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1135 to external functions. This can be used to increase CRL handling
1136 efficiency especially when CRLs are very large by (for example) storing
1137 the CRL revoked certificates in a database.
1140 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1141 new CRLs added to a directory can be used. New command line option
1142 -verify_return_error to s_client and s_server. This causes real errors
1143 to be returned by the verify callback instead of carrying on no matter
1144 what. This reflects the way a "real world" verify callback would behave.
1147 *) GOST engine, supporting several GOST algorithms and public key formats.
1148 Kindly donated by Cryptocom.
1151 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1152 partitioned by DP are handled but no indirect CRL or reason partitioning
1153 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1154 selected via a scoring technique which handles IDP and AKID in CRLs.
1157 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1158 will ultimately be used for all verify operations: this will remove the
1159 X509_STORE dependency on certificate verification and allow alternative
1160 lookup methods. X509_STORE based implementations of these two callbacks.
1163 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1164 Modify get_crl() to find a valid (unexpired) CRL if possible.
1167 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1168 this would be called X509_CRL_cmp() but that name is already used by
1169 a function that just compares CRL issuer names. Cache several CRL
1170 extensions in X509_CRL structure and cache CRLDP in X509.
1173 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1174 this maps equivalent X509_NAME structures into a consistent structure.
1175 Name comparison can then be performed rapidly using memcmp().
1178 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1182 *) Allow digests to supply their own micalg string for S/MIME type using
1183 the ctrl EVP_MD_CTRL_MICALG.
1186 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1187 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1188 ctrl. It can then customise the structure before and/or after signing
1192 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1193 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1194 to free up any added signature OIDs.
1197 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1198 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1199 digest and cipher tables. New options added to openssl utility:
1200 list-message-digest-algorithms and list-cipher-algorithms.
1203 *) Change the array representation of binary polynomials: the list
1204 of degrees of non-zero coefficients is now terminated with -1.
1205 Previously it was terminated with 0, which was also part of the
1206 value; thus, the array representation was not applicable to
1207 polynomials where t^0 has coefficient zero. This change makes
1208 the array representation useful in a more general context.
1211 *) Various modifications and fixes to SSL/TLS cipher string
1212 handling. For ECC, the code now distinguishes between fixed ECDH
1213 with RSA certificates on the one hand and with ECDSA certificates
1214 on the other hand, since these are separate ciphersuites. The
1215 unused code for Fortezza ciphersuites has been removed.
1217 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1218 (not "ECDHE"). For consistency with the code for DH
1219 certificates, use of ECDH certificates is now considered ECDH
1220 authentication, not RSA or ECDSA authentication (the latter is
1221 merely the CA's signing algorithm and not actively used in the
1224 The temporary ciphersuite alias "ECCdraft" is no longer
1225 available, and ECC ciphersuites are no longer excluded from "ALL"
1226 and "DEFAULT". The following aliases now exist for RFC 4492
1227 ciphersuites, most of these by analogy with the DH case:
1229 kECDHr - ECDH cert, signed with RSA
1230 kECDHe - ECDH cert, signed with ECDSA
1231 kECDH - ECDH cert (signed with either RSA or ECDSA)
1232 kEECDH - ephemeral ECDH
1233 ECDH - ECDH cert or ephemeral ECDH
1239 AECDH - anonymous ECDH
1240 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1244 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1245 Use correct micalg parameters depending on digest(s) in signed message.
1248 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1249 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1252 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1253 an engine to register a method. Add ENGINE lookups for methods and
1254 functional reference processing.
1257 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1258 EVP_{Sign,Verify}* which allow an application to customise the signature
1262 *) New -resign option to smime utility. This adds one or more signers
1263 to an existing PKCS#7 signedData structure. Also -md option to use an
1264 alternative message digest algorithm for signing.
1267 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1268 create PKCS7 structures containing multiple signers. Update smime
1269 application to support multiple signers.
1272 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1276 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1277 Reorganize PBE internals to lookup from a static table using NIDs,
1278 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1279 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1280 PRF which will be automatically used with PBES2.
1283 *) Replace the algorithm specific calls to generate keys in "req" with the
1287 *) Update PKCS#7 enveloped data routines to use new API. This is now
1288 supported by any public key method supporting the encrypt operation. A
1289 ctrl is added to allow the public key algorithm to examine or modify
1290 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1294 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1295 a default digest type to use. In most cases this will be SHA1 but some
1296 algorithms (such as GOST) need to specify an alternative digest. The
1297 return value indicates how strong the prefernce is 1 means optional and
1298 2 is mandatory (that is it is the only supported type). Modify
1299 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1300 use the default md. Update openssl utilities to use the default digest
1301 type for signing if it is not explicitly indicated.
1304 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1305 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1306 signing method from the key type. This effectively removes the link
1307 between digests and public key types.
1310 *) Add an OID cross reference table and utility functions. Its purpose is to
1311 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1312 rsaEncryption. This will allow some of the algorithm specific hackery
1313 needed to use the correct OID to be removed.
1316 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1317 structures for PKCS7_sign(). They are now set up by the relevant public
1321 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1324 *) Add support for key derivation (agreement) in the API, DH method and
1328 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1329 public and private key formats. As a side effect these add additional
1330 command line functionality not previously available: DSA signatures can be
1331 generated and verified using pkeyutl and DH key support and generation in
1336 [Oliver Tappe <zooey@hirschkaefer.de>]
1338 *) New make target "install_html_docs" installs HTML renditions of the
1340 [Oliver Tappe <zooey@hirschkaefer.de>]
1342 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1343 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1344 support key and parameter generation and add initial key generation
1345 functionality for RSA.
1348 *) Add functions for main EVP_PKEY_method operations. The undocumented
1349 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1350 EVP_PKEY_{encrypt,decrypt}_old.
1353 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1354 key API, doesn't do much yet.
1357 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1358 public key algorithms. New option to openssl utility:
1359 "list-public-key-algorithms" to print out info.
1362 *) Implement the Supported Elliptic Curves Extension for
1363 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1366 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1367 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1370 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1371 utilities such as rsa, dsa, dsaparam etc except they process any key
1375 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1376 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1377 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1381 *) Initial support for pluggable public key ASN1.
1382 De-spaghettify the public key ASN1 handling. Move public and private
1383 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1384 algorithm specific handling to a single module within the relevant
1385 algorithm directory. Add functions to allow (near) opaque processing
1386 of public and private key structures.
1389 *) Implement the Supported Point Formats Extension for
1390 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1393 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1394 for the psk identity [hint] and the psk callback functions to the
1395 SSL_SESSION, SSL and SSL_CTX structure.
1398 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1402 SSL_CTX_use_psk_identity_hint
1403 SSL_get_psk_identity_hint
1404 SSL_get_psk_identity
1405 SSL_use_psk_identity_hint
1407 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1409 *) Add RFC 3161 compliant time stamp request creation, response generation
1410 and response verification functionality.
1411 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1413 *) Add initial support for TLS extensions, specifically for the server_name
1414 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1415 have new members for a host name. The SSL data structure has an
1416 additional member SSL_CTX *initial_ctx so that new sessions can be
1417 stored in that context to allow for session resumption, even after the
1418 SSL has been switched to a new SSL_CTX in reaction to a client's
1419 server_name extension.
1421 New functions (subject to change):
1423 SSL_get_servername()
1424 SSL_get_servername_type()
1427 New CTRL codes and macros (subject to change):
1429 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1430 - SSL_CTX_set_tlsext_servername_callback()
1431 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1432 - SSL_CTX_set_tlsext_servername_arg()
1433 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1435 openssl s_client has a new '-servername ...' option.
1437 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1438 '-key2 ...', '-servername_fatal' (subject to change). This allows
1439 testing the HostName extension for a specific single host name ('-cert'
1440 and '-key' remain fallbacks for handshakes without HostName
1441 negotiation). If the unrecogninzed_name alert has to be sent, this by
1442 default is a warning; it becomes fatal with the '-servername_fatal'
1445 [Peter Sylvester, Remy Allais, Christophe Renou]
1447 *) Whirlpool hash implementation is added.
1450 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1451 bn(64,32). Because of instruction set limitations it doesn't have
1452 any negative impact on performance. This was done mostly in order
1453 to make it possible to share assembler modules, such as bn_mul_mont
1454 implementations, between 32- and 64-bit builds without hassle.
1457 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1458 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1462 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1463 dedicated Montgomery multiplication procedure, is introduced.
1464 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1465 "64-bit" performance on certain 32-bit targets.
1468 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1469 in SSL structures. New SSL ctrl to set maximum send fragment size.
1470 Save memory by seeting the I/O buffer sizes dynamically instead of
1471 using the maximum available value.
1474 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1475 in addition to the text details.
1478 *) Very, very preliminary EXPERIMENTAL support for printing of general
1479 ASN1 structures. This currently produces rather ugly output and doesn't
1480 handle several customised structures at all.
1483 *) Integrated support for PVK file format and some related formats such
1484 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1485 these in the 'rsa' and 'dsa' utilities.
1488 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1491 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1492 place for the (very old) "NETSCAPE" format certificates which are now
1493 handled using new ASN1 code equivalents.
1496 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1497 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1498 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1501 *) Modify CRL distribution points extension code to print out previously
1502 unsupported fields. Enhance extension setting code to allow setting of
1506 *) Add print and set support for Issuing Distribution Point CRL extension.
1509 *) Change 'Configure' script to enable Camellia by default.
1512 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1514 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1515 Thanks to Antonio Martin, Enterprise Secure Access Research and
1516 Development, Cisco Systems, Inc. for discovering this bug and
1517 preparing a fix. (CVE-2012-0050)
1520 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1522 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1523 of the Vaudenay padding oracle attack on CBC mode encryption
1524 which enables an efficient plaintext recovery attack against
1525 the OpenSSL implementation of DTLS. Their attack exploits timing
1526 differences arising during decryption processing. A research
1527 paper describing this attack can be found at:
1528 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1529 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1530 Security Group at Royal Holloway, University of London
1531 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1532 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1533 for preparing the fix. (CVE-2011-4108)
1534 [Robin Seggelmann, Michael Tuexen]
1536 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1537 [Ben Laurie, Kasper <ekasper@google.com>]
1539 *) Clear bytes used for block padding of SSL 3.0 records.
1541 [Adam Langley (Google)]
1543 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1544 Kadianakis <desnacked@gmail.com> for discovering this issue and
1545 Adam Langley for preparing the fix. (CVE-2011-4619)
1546 [Adam Langley (Google)]
1548 *) Prevent malformed RFC3779 data triggering an assertion failure.
1549 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1550 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1551 [Rob Austein <sra@hactrn.net>]
1553 *) Fix ssl_ciph.c set-up race.
1554 [Adam Langley (Google)]
1556 *) Fix spurious failures in ecdsatest.c.
1557 [Emilia Käsper (Google)]
1559 *) Fix the BIO_f_buffer() implementation (which was mixing different
1560 interpretations of the '..._len' fields).
1561 [Adam Langley (Google)]
1563 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1564 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1565 threads won't reuse the same blinding coefficients.
1567 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1568 lock to call BN_BLINDING_invert_ex, and avoids one use of
1569 BN_BLINDING_update for each BN_BLINDING structure (previously,
1570 the last update always remained unused).
1571 [Emilia Käsper (Google)]
1573 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1574 for multi-threaded use of ECDH.
1575 [Adam Langley (Google)]
1577 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1580 *) Add protection against ECDSA timing attacks as mentioned in the paper
1581 by Billy Bob Brumley and Nicola Tuveri, see:
1583 http://eprint.iacr.org/2011/232.pdf
1585 [Billy Bob Brumley and Nicola Tuveri]
1587 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1589 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1590 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1592 *) Fix bug in string printing code: if *any* escaping is enabled we must
1593 escape the escape character (backslash) or the resulting string is
1597 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1599 *) Disable code workaround for ancient and obsolete Netscape browsers
1600 and servers: an attacker can use it in a ciphersuite downgrade attack.
1601 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1604 *) Fixed J-PAKE implementation error, originally discovered by
1605 Sebastien Martini, further info and confirmation from Stefan
1606 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1609 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1611 *) Fix extension code to avoid race conditions which can result in a buffer
1612 overrun vulnerability: resumed sessions must not be modified as they can
1613 be shared by multiple threads. CVE-2010-3864
1616 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1619 *) Don't reencode certificate when calculating signature: cache and use
1620 the original encoding instead. This makes signature verification of
1621 some broken encodings work correctly.
1624 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1625 is also one of the inputs.
1626 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1628 *) Don't repeatedly append PBE algorithms to table if they already exist.
1629 Sort table on each new add. This effectively makes the table read only
1630 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1634 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1636 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1639 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1640 access or freeing data twice (CVE-2010-0742)
1641 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1643 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1644 common in certificates and some applications which only call
1645 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1649 Reduce copying into .apps and .test in makevms.com
1650 Don't try to use blank CA certificate in CA.com
1651 Allow use of C files from original directories in maketests.com
1652 [Steven M. Schweda" <sms@antinode.info>]
1654 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1656 *) When rejecting SSL/TLS records due to an incorrect version number, never
1657 update s->server with a new major version number. As of
1658 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1659 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1660 the previous behavior could result in a read attempt at NULL when
1661 receiving specific incorrect SSL/TLS records once record payload
1662 protection is active. (CVE-2010-0740)
1663 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1665 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1666 could be crashed if the relevant tables were not present (e.g. chrooted).
1667 [Tomas Hoger <thoger@redhat.com>]
1669 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1671 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1672 [Martin Olsson, Neel Mehta]
1674 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1675 accommodate for stack sorting, always a write lock!).
1678 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1679 excessive delays in the RAND_poll(): over a minute. As a workaround
1680 include a time check in the inner Heap32Next loop too.
1683 *) The code that handled flushing of data in SSL/TLS originally used the
1684 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1685 the problem outlined in PR#1949. The fix suggested there however can
1686 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1687 of Apache). So instead simplify the code to flush unconditionally.
1688 This should be fine since flushing with no data to flush is a no op.
1691 *) Handle TLS versions 2.0 and later properly and correctly use the
1692 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1693 off ancient servers have a habit of sticking around for a while...
1696 *) Modify compression code so it frees up structures without using the
1697 ex_data callbacks. This works around a problem where some applications
1698 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1699 restarting) then use compression (e.g. SSL with compression) later.
1700 This results in significant per-connection memory leaks and
1701 has caused some security issues including CVE-2008-1678 and
1705 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1706 change when encrypting or decrypting.
1709 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1710 connect and renegotiate with servers which do not support RI.
1711 Until RI is more widely deployed this option is enabled by default.
1714 *) Add "missing" ssl ctrls to clear options and mode.
1717 *) If client attempts to renegotiate and doesn't support RI respond with
1718 a no_renegotiation alert as required by RFC5746. Some renegotiating
1719 TLS clients will continue a connection gracefully when they receive
1720 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1721 waiting for a server hello which it will never receive. Now we treat a
1722 received no_renegotiation alert as a fatal error. This is because
1723 applications requesting a renegotiation might well expect it to succeed
1724 and would have no code in place to handle the server denying it so the
1725 only safe thing to do is to terminate the connection.
1728 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1729 peer supports secure renegotiation and 0 otherwise. Print out peer
1730 renegotiation support in s_client/s_server.
1733 *) Replace the highly broken and deprecated SPKAC certification method with
1734 the updated NID creation version. This should correctly handle UTF8.
1737 *) Implement RFC5746. Re-enable renegotiation but require the extension
1738 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1739 turns out to be a bad idea. It has been replaced by
1740 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1741 SSL_CTX_set_options(). This is really not recommended unless you
1742 know what you are doing.
1743 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1745 *) Fixes to stateless session resumption handling. Use initial_ctx when
1746 issuing and attempting to decrypt tickets in case it has changed during
1747 servername handling. Use a non-zero length session ID when attempting
1748 stateless session resumption: this makes it possible to determine if
1749 a resumption has occurred immediately after receiving server hello
1750 (several places in OpenSSL subtly assume this) instead of later in
1754 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1755 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1756 fixes for a few places where the return code is not checked
1758 [Julia Lawall <julia@diku.dk>]
1760 *) Add --strict-warnings option to Configure script to include devteam
1761 warnings in other configurations.
1764 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1765 makes it possible to install openssl libraries in locations which
1766 have names other than "lib", for example "/usr/lib64" which some
1768 [Steve Henson, based on patch from Jeremy Utley]
1770 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1771 X690 8.9.12 and can produce some misleading textual output of OIDs.
1772 [Steve Henson, reported by Dan Kaminsky]
1774 *) Delete MD2 from algorithm tables. This follows the recommendation in
1775 several standards that it is not used in new applications due to
1776 several cryptographic weaknesses. For binary compatibility reasons
1777 the MD2 API is still compiled in by default.
1780 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1784 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1785 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1787 [Guenter <lists@gknw.net>]
1789 *) Fix the server certificate chain building code to use X509_verify_cert(),
1790 it used to have an ad-hoc builder which was unable to cope with anything
1791 other than a simple chain.
1792 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1794 *) Don't check self signed certificate signatures in X509_verify_cert()
1795 by default (a flag can override this): it just wastes time without
1796 adding any security. As a useful side effect self signed root CAs
1797 with non-FIPS digests are now usable in FIPS mode.
1800 *) In dtls1_process_out_of_seq_message() the check if the current message
1801 is already buffered was missing. For every new message was memory
1802 allocated, allowing an attacker to perform an denial of service attack
1803 with sending out of seq handshake messages until there is no memory
1804 left. Additionally every future messege was buffered, even if the
1805 sequence number made no sense and would be part of another handshake.
1806 So only messages with sequence numbers less than 10 in advance will be
1807 buffered. (CVE-2009-1378)
1808 [Robin Seggelmann, discovered by Daniel Mentz]
1810 *) Records are buffered if they arrive with a future epoch to be
1811 processed after finishing the corresponding handshake. There is
1812 currently no limitation to this buffer allowing an attacker to perform
1813 a DOS attack with sending records with future epochs until there is no
1814 memory left. This patch adds the pqueue_size() function to detemine
1815 the size of a buffer and limits the record buffer to 100 entries.
1817 [Robin Seggelmann, discovered by Daniel Mentz]
1819 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1820 parent structure is freed. (CVE-2009-1379)
1823 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1824 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1827 [Ilya O. <vrghost@gmail.com>]
1829 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1831 *) Disable renegotiation completely - this fixes a severe security
1832 problem (CVE-2009-3555) at the cost of breaking all
1833 renegotiation. Renegotiation can be re-enabled by setting
1834 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1835 run-time. This is really not recommended unless you know what
1839 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1841 *) Don't set val to NULL when freeing up structures, it is freed up by
1842 underlying code. If sizeof(void *) > sizeof(long) this can result in
1843 zeroing past the valid field. (CVE-2009-0789)
1844 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1846 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1847 checked correctly. This would allow some invalid signed attributes to
1848 appear to verify correctly. (CVE-2009-0591)
1849 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1851 *) Reject UniversalString and BMPString types with invalid lengths. This
1852 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1853 a legal length. (CVE-2009-0590)
1856 *) Set S/MIME signing as the default purpose rather than setting it
1857 unconditionally. This allows applications to override it at the store
1861 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1862 to handle some structures.
1865 *) Improve efficiency of mem_gets: don't search whole buffer each time
1867 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1869 *) New -hex option for openssl rand.
1872 *) Print out UTF8String and NumericString when parsing ASN1.
1875 *) Support NumericString type for name components.
1878 *) Allow CC in the environment to override the automatically chosen
1879 compiler. Note that nothing is done to ensure flags work with the
1883 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1885 *) Properly check EVP_VerifyFinal() and similar return values
1887 [Ben Laurie, Bodo Moeller, Google Security Team]
1889 *) Enable TLS extensions by default.
1892 *) Allow the CHIL engine to be loaded, whether the application is
1893 multithreaded or not. (This does not release the developer from the
1894 obligation to set up the dynamic locking callbacks.)
1895 [Sander Temme <sander@temme.net>]
1897 *) Use correct exit code if there is an error in dgst command.
1898 [Steve Henson; problem pointed out by Roland Dirlewanger]
1900 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1901 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1904 *) Add experimental JPAKE support, including demo authentication in
1905 s_client and s_server.
1908 *) Set the comparison function in v3_addr_canonize().
1909 [Rob Austein <sra@hactrn.net>]
1911 *) Add support for XMPP STARTTLS in s_client.
1912 [Philip Paeps <philip@freebsd.org>]
1914 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1915 to ensure that even with this option, only ciphersuites in the
1916 server's preference list will be accepted. (Note that the option
1917 applies only when resuming a session, so the earlier behavior was
1918 just about the algorithm choice for symmetric cryptography.)
1921 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1923 *) Fix NULL pointer dereference if a DTLS server received
1924 ChangeCipherSpec as first record (CVE-2009-1386).
1927 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1928 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1931 *) The fix in 0.9.8c that supposedly got rid of unsafe
1932 double-checked locking was incomplete for RSA blinding,
1933 addressing just one layer of what turns out to have been
1934 doubly unsafe triple-checked locking.
1936 So now fix this for real by retiring the MONT_HELPER macro
1937 in crypto/rsa/rsa_eay.c.
1939 [Bodo Moeller; problem pointed out by Marius Schilder]
1941 *) Various precautionary measures:
1943 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1945 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1946 (NB: This would require knowledge of the secret session ticket key
1947 to exploit, in which case you'd be SOL either way.)
1949 - Change bn_nist.c so that it will properly handle input BIGNUMs
1950 outside the expected range.
1952 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1955 [Neel Mehta, Bodo Moeller]
1957 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1958 the load fails. Useful for distros.
1959 [Ben Laurie and the FreeBSD team]
1961 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1964 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1967 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1969 This work was sponsored by Logica.
1972 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1973 keystores. Support for SSL/TLS client authentication too.
1974 Not compiled unless enable-capieng specified to Configure.
1976 This work was sponsored by Logica.
1979 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1980 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1981 attribute creation routines such as certifcate requests and PKCS#12
1985 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1987 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1988 handshake which could lead to a cilent crash as found using the
1989 Codenomicon TLS test suite (CVE-2008-1672)
1990 [Steve Henson, Mark Cox]
1992 *) Fix double free in TLS server name extensions which could lead to
1993 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1996 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1998 Clear the error queue to ensure that error entries left from
1999 older function calls do not interfere with the correct operation.
2000 [Lutz Jaenicke, Erik de Castro Lopo]
2002 *) Remove root CA certificates of commercial CAs:
2004 The OpenSSL project does not recommend any specific CA and does not
2005 have any policy with respect to including or excluding any CA.
2006 Therefore it does not make any sense to ship an arbitrary selection
2007 of root CA certificates with the OpenSSL software.
2010 *) RSA OAEP patches to fix two separate invalid memory reads.
2011 The first one involves inputs when 'lzero' is greater than
2012 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2013 before the beginning of from). The second one involves inputs where
2014 the 'db' section contains nothing but zeroes (there is a one-byte
2015 invalid read after the end of 'db').
2016 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2018 *) Partial backport from 0.9.9-dev:
2020 Introduce bn_mul_mont (dedicated Montgomery multiplication
2021 procedure) as a candidate for BIGNUM assembler implementation.
2022 While 0.9.9-dev uses assembler for various architectures, only
2023 x86_64 is available by default here in the 0.9.8 branch, and
2024 32-bit x86 is available through a compile-time setting.
2026 To try the 32-bit x86 assembler implementation, use Configure
2027 option "enable-montasm" (which exists only for this backport).
2029 As "enable-montasm" for 32-bit x86 disclaims code stability
2030 anyway, in this constellation we activate additional code
2031 backported from 0.9.9-dev for further performance improvements,
2032 namely BN_from_montgomery_word. (To enable this otherwise,
2033 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2035 [Andy Polyakov (backport partially by Bodo Moeller)]
2037 *) Add TLS session ticket callback. This allows an application to set
2038 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2039 values. This is useful for key rollover for example where several key
2040 sets may exist with different names.
2043 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2044 This was broken until now in 0.9.8 releases, such that the only way
2045 a registered ENGINE could be used (assuming it initialises
2046 successfully on the host) was to explicitly set it as the default
2047 for the relevant algorithms. This is in contradiction with 0.9.7
2048 behaviour and the documentation. With this fix, when an ENGINE is
2049 registered into a given algorithm's table of implementations, the
2050 'uptodate' flag is reset so that auto-discovery will be used next
2051 time a new context for that algorithm attempts to select an
2053 [Ian Lister (tweaked by Geoff Thorpe)]
2055 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2056 implemention in the following ways:
2058 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2061 Lack of BER streaming support means one pass streaming processing is
2062 only supported if data is detached: setting the streaming flag is
2063 ignored for embedded content.
2065 CMS support is disabled by default and must be explicitly enabled
2066 with the enable-cms configuration option.
2069 *) Update the GMP engine glue to do direct copies between BIGNUM and
2070 mpz_t when openssl and GMP use the same limb size. Otherwise the
2071 existing "conversion via a text string export" trick is still used.
2072 [Paul Sheer <paulsheer@gmail.com>]
2074 *) Zlib compression BIO. This is a filter BIO which compressed and
2075 uncompresses any data passed through it.
2078 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2079 RFC3394 compatible AES key wrapping.
2082 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2083 sets string data without copying. X509_ALGOR_set0() and
2084 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2085 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2086 from an X509_ATTRIBUTE structure optionally checking it occurs only
2087 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2091 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2092 to get the expected BN_FLG_CONSTTIME behavior.
2093 [Bodo Moeller (Google)]
2097 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2098 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2099 - added some more tests to do_tests.pl
2100 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2101 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2102 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2103 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2104 - various changes to netware.pl to enable gcc-cross builds on Win32
2106 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2107 - various changes to fix missing prototype warnings
2108 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2109 - added AES, WHIRLPOOL and CPUID assembler code to build files
2110 - added missing AES assembler make rules to mk1mf.pl
2111 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2112 [Guenter Knauf <eflash@gmx.net>]
2114 *) Implement certificate status request TLS extension defined in RFC3546.
2115 A client can set the appropriate parameters and receive the encoded
2116 OCSP response via a callback. A server can query the supplied parameters
2117 and set the encoded OCSP response in the callback. Add simplified examples
2118 to s_client and s_server.
2121 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2123 *) Fix various bugs:
2124 + Binary incompatibility of ssl_ctx_st structure
2125 + DTLS interoperation with non-compliant servers
2126 + Don't call get_session_cb() without proposed session
2127 + Fix ia64 assembler code
2128 [Andy Polyakov, Steve Henson]
2130 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2132 *) DTLS Handshake overhaul. There were longstanding issues with
2133 OpenSSL DTLS implementation, which were making it impossible for
2134 RFC 4347 compliant client to communicate with OpenSSL server.
2135 Unfortunately just fixing these incompatibilities would "cut off"
2136 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2137 server keeps tolerating non RFC compliant syntax. The opposite is
2138 not true, 0.9.8f client can not communicate with earlier server.
2139 This update even addresses CVE-2007-4995.
2142 *) Changes to avoid need for function casts in OpenSSL: some compilers
2143 (gcc 4.2 and later) reject their use.
2144 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2147 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2148 RFC4507bis. The encrypted ticket format is an encrypted encoded
2149 SSL_SESSION structure, that way new session features are automatically
2152 If a client application caches session in an SSL_SESSION structure
2153 support is transparent because tickets are now stored in the encoded
2156 The SSL_CTX structure automatically generates keys for ticket
2157 protection in servers so again support should be possible
2158 with no application modification.
2160 If a client or server wishes to disable RFC4507 support then the option
2161 SSL_OP_NO_TICKET can be set.
2163 Add a TLS extension debugging callback to allow the contents of any client
2164 or server extensions to be examined.
2166 This work was sponsored by Google.
2169 *) Add initial support for TLS extensions, specifically for the server_name
2170 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2171 have new members for a host name. The SSL data structure has an
2172 additional member SSL_CTX *initial_ctx so that new sessions can be
2173 stored in that context to allow for session resumption, even after the
2174 SSL has been switched to a new SSL_CTX in reaction to a client's
2175 server_name extension.
2177 New functions (subject to change):
2179 SSL_get_servername()
2180 SSL_get_servername_type()
2183 New CTRL codes and macros (subject to change):
2185 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2186 - SSL_CTX_set_tlsext_servername_callback()
2187 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2188 - SSL_CTX_set_tlsext_servername_arg()
2189 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2191 openssl s_client has a new '-servername ...' option.
2193 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2194 '-key2 ...', '-servername_fatal' (subject to change). This allows
2195 testing the HostName extension for a specific single host name ('-cert'
2196 and '-key' remain fallbacks for handshakes without HostName
2197 negotiation). If the unrecogninzed_name alert has to be sent, this by
2198 default is a warning; it becomes fatal with the '-servername_fatal'
2201 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2203 *) Add AES and SSE2 assembly language support to VC++ build.
2206 *) Mitigate attack on final subtraction in Montgomery reduction.
2209 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2210 (which previously caused an internal error).
2213 *) Squeeze another 10% out of IGE mode when in != out.
2216 *) AES IGE mode speedup.
2217 [Dean Gaudet (Google)]
2219 *) Add the Korean symmetric 128-bit cipher SEED (see
2220 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2221 add SEED ciphersuites from RFC 4162:
2223 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2224 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2225 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2226 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2228 To minimize changes between patchlevels in the OpenSSL 0.9.8
2229 series, SEED remains excluded from compilation unless OpenSSL
2230 is configured with 'enable-seed'.
2231 [KISA, Bodo Moeller]
2233 *) Mitigate branch prediction attacks, which can be practical if a
2234 single processor is shared, allowing a spy process to extract
2235 information. For detailed background information, see
2236 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2237 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2238 and Necessary Software Countermeasures"). The core of the change
2239 are new versions BN_div_no_branch() and
2240 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2241 respectively, which are slower, but avoid the security-relevant
2242 conditional branches. These are automatically called by BN_div()
2243 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2244 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2245 remove a conditional branch.
2247 BN_FLG_CONSTTIME is the new name for the previous
2248 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2249 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2250 in the exponent causes BN_mod_exp_mont() to use the alternative
2251 implementation in BN_mod_exp_mont_consttime().) The old name
2252 remains as a deprecated alias.
2254 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2255 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2256 constant-time implementations for more than just exponentiation.
2257 Here too the old name is kept as a deprecated alias.
2259 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2260 the BN_BLINDING structure gets an independent copy of the
2261 modulus. This means that the previous "BIGNUM *m" argument to
2262 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2263 essentially becomes "const BIGNUM *m", although we can't actually
2264 change this in the header file before 0.9.9. It allows
2265 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2266 enable BN_FLG_CONSTTIME.
2268 [Matthew D Wood (Intel Corp)]
2270 *) In the SSL/TLS server implementation, be strict about session ID
2271 context matching (which matters if an application uses a single
2272 external cache for different purposes). Previously,
2273 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2274 set. This did ensure strict client verification, but meant that,
2275 with applications using a single external cache for quite
2276 different requirements, clients could circumvent ciphersuite
2277 restrictions for a given session ID context by starting a session
2278 in a different context.
2281 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2282 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2283 authentication-only ciphersuites.
2286 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2287 not complete and could lead to a possible single byte overflow
2288 (CVE-2007-5135) [Ben Laurie]
2290 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2292 *) Since AES128 and AES256 (and similarly Camellia128 and
2293 Camellia256) share a single mask bit in the logic of
2294 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2295 kludge to work properly if AES128 is available and AES256 isn't
2296 (or if Camellia128 is available and Camellia256 isn't).
2299 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2300 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2301 When a point or a seed is encoded in a BIT STRING, we need to
2302 prevent the removal of trailing zero bits to get the proper DER
2303 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2304 of a NamedBitList, for which trailing 0 bits need to be removed.)
2307 *) Have SSL/TLS server implementation tolerate "mismatched" record
2308 protocol version while receiving ClientHello even if the
2309 ClientHello is fragmented. (The server can't insist on the
2310 particular protocol version it has chosen before the ServerHello
2311 message has informed the client about his choice.)
2314 *) Add RFC 3779 support.
2315 [Rob Austein for ARIN, Ben Laurie]
2317 *) Load error codes if they are not already present instead of using a
2318 static variable. This allows them to be cleanly unloaded and reloaded.
2319 Improve header file function name parsing.
2322 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2323 or CAPABILITY handshake as required by RFCs.
2326 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2328 *) Introduce limits to prevent malicious keys being able to
2329 cause a denial of service. (CVE-2006-2940)
2330 [Steve Henson, Bodo Moeller]
2332 *) Fix ASN.1 parsing of certain invalid structures that can result
2333 in a denial of service. (CVE-2006-2937) [Steve Henson]
2335 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2336 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2338 *) Fix SSL client code which could crash if connecting to a
2339 malicious SSLv2 server. (CVE-2006-4343)
2340 [Tavis Ormandy and Will Drewry, Google Security Team]
2342 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2343 match only those. Before that, "AES256-SHA" would be interpreted
2344 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2345 the same strength classification in 0.9.7h) as we currently only
2346 have a single AES bit in the ciphersuite description bitmap.
2347 That change, however, also applied to ciphersuite strings such as
2348 "RC4-MD5" that intentionally matched multiple ciphersuites --
2349 namely, SSL 2.0 ciphersuites in addition to the more common ones
2350 from SSL 3.0/TLS 1.0.
2352 So we change the selection algorithm again: Naming an explicit
2353 ciphersuite selects this one ciphersuite, and any other similar
2354 ciphersuite (same bitmap) from *other* protocol versions.
2355 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2356 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2358 Since SSL 2.0 does not have any ciphersuites for which the
2359 128/256 bit distinction would be relevant, this works for now.
2360 The proper fix will be to use different bits for AES128 and
2361 AES256, which would have avoided the problems from the beginning;
2362 however, bits are scarce, so we can only do this in a new release
2363 (not just a patchlevel) when we can change the SSL_CIPHER
2364 definition to split the single 'unsigned long mask' bitmap into
2365 multiple values to extend the available space.
2369 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2371 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2372 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2374 *) Add AES IGE and biIGE modes.
2377 *) Change the Unix randomness entropy gathering to use poll() when
2378 possible instead of select(), since the latter has some
2379 undesirable limitations.
2380 [Darryl Miles via Richard Levitte and Bodo Moeller]
2382 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2383 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2384 cannot be implicitly activated as part of, e.g., the "AES" alias.
2385 However, please upgrade to OpenSSL 0.9.9[-dev] for
2386 non-experimental use of the ECC ciphersuites to get TLS extension
2387 support, which is required for curve and point format negotiation
2388 to avoid potential handshake problems.
2391 *) Disable rogue ciphersuites:
2393 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2394 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2395 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2397 The latter two were purportedly from
2398 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2401 Also deactivate the remaining ciphersuites from
2402 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2403 unofficial, and the ID has long expired.
2406 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2407 dual-core machines) and other potential thread-safety issues.
2410 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2411 versions), which is now available for royalty-free use
2412 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2413 Also, add Camellia TLS ciphersuites from RFC 4132.
2415 To minimize changes between patchlevels in the OpenSSL 0.9.8
2416 series, Camellia remains excluded from compilation unless OpenSSL
2417 is configured with 'enable-camellia'.
2420 *) Disable the padding bug check when compression is in use. The padding
2421 bug check assumes the first packet is of even length, this is not
2422 necessarily true if compresssion is enabled and can result in false
2423 positives causing handshake failure. The actual bug test is ancient
2424 code so it is hoped that implementations will either have fixed it by
2425 now or any which still have the bug do not support compression.
2428 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2430 *) When applying a cipher rule check to see if string match is an explicit
2431 cipher suite and only match that one cipher suite if it is.
2434 *) Link in manifests for VC++ if needed.
2435 [Austin Ziegler <halostatue@gmail.com>]
2437 *) Update support for ECC-based TLS ciphersuites according to
2438 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2439 TLS extensions, which are supported starting with the 0.9.9
2440 branch, not in the OpenSSL 0.9.8 branch).
2443 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2444 opaque EVP_CIPHER_CTX handling.
2447 *) Fixes and enhancements to zlib compression code. We now only use
2448 "zlib1.dll" and use the default __cdecl calling convention on Win32
2449 to conform with the standards mentioned here:
2450 http://www.zlib.net/DLL_FAQ.txt
2451 Static zlib linking now works on Windows and the new --with-zlib-include
2452 --with-zlib-lib options to Configure can be used to supply the location
2453 of the headers and library. Gracefully handle case where zlib library
2457 *) Several fixes and enhancements to the OID generation code. The old code
2458 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2459 handle numbers larger than ULONG_MAX, truncated printing and had a
2460 non standard OBJ_obj2txt() behaviour.
2463 *) Add support for building of engines under engine/ as shared libraries
2464 under VC++ build system.
2467 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2468 Hopefully, we will not see any false combination of paths any more.
2471 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2473 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2474 (part of SSL_OP_ALL). This option used to disable the
2475 countermeasure against man-in-the-middle protocol-version
2476 rollback in the SSL 2.0 server implementation, which is a bad
2477 idea. (CVE-2005-2969)
2479 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2480 for Information Security, National Institute of Advanced Industrial
2481 Science and Technology [AIST], Japan)]
2483 *) Add two function to clear and return the verify parameter flags.
2486 *) Keep cipherlists sorted in the source instead of sorting them at
2487 runtime, thus removing the need for a lock.
2490 *) Avoid some small subgroup attacks in Diffie-Hellman.
2491 [Nick Mathewson and Ben Laurie]
2493 *) Add functions for well-known primes.
2496 *) Extended Windows CE support.
2497 [Satoshi Nakamura and Andy Polyakov]
2499 *) Initialize SSL_METHOD structures at compile time instead of during
2500 runtime, thus removing the need for a lock.
2503 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2504 attempting to decrypt each encrypted key in turn. Add support to
2508 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2510 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2513 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2516 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2517 key into the same file any more.
2520 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2523 *) Add -utf8 command line and config file option to 'ca'.
2524 [Stefan <stf@udoma.org]
2526 *) Removed the macro des_crypt(), as it seems to conflict with some
2527 libraries. Use DES_crypt().
2530 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2531 involves renaming the source and generated shared-libs for
2532 both. The engines will accept the corrected or legacy ids
2533 ('ncipher' and '4758_cca' respectively) when binding. NB,
2534 this only applies when building 'shared'.
2535 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2537 *) Add attribute functions to EVP_PKEY structure. Modify
2538 PKCS12_create() to recognize a CSP name attribute and
2539 use it. Make -CSP option work again in pkcs12 utility.
2542 *) Add new functionality to the bn blinding code:
2543 - automatic re-creation of the BN_BLINDING parameters after
2544 a fixed number of uses (currently 32)
2545 - add new function for parameter creation
2546 - introduce flags to control the update behaviour of the
2547 BN_BLINDING parameters
2548 - hide BN_BLINDING structure
2549 Add a second BN_BLINDING slot to the RSA structure to improve
2550 performance when a single RSA object is shared among several
2554 *) Add support for DTLS.
2555 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2557 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2558 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2561 *) Remove buggy and incompletet DH cert support from
2562 ssl/ssl_rsa.c and ssl/s3_both.c
2565 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2566 the apps/openssl applications.
2569 *) Compile clean with "-Wall -Wmissing-prototypes
2570 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2571 DEBUG_SAFESTACK must also be set.
2574 *) Change ./Configure so that certain algorithms can be disabled by default.
2575 The new counterpiece to "no-xxx" is "enable-xxx".
2577 The patented RC5 and MDC2 algorithms will now be disabled unless
2578 "enable-rc5" and "enable-mdc2", respectively, are specified.
2580 (IDEA remains enabled despite being patented. This is because IDEA
2581 is frequently required for interoperability, and there is no license
2582 fee for non-commercial use. As before, "no-idea" can be used to
2583 avoid this algorithm.)
2587 *) Add processing of proxy certificates (see RFC 3820). This work was
2588 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2589 EGEE (Enabling Grids for E-science in Europe).
2592 *) RC4 performance overhaul on modern architectures/implementations, such
2593 as Intel P4, IA-64 and AMD64.
2596 *) New utility extract-section.pl. This can be used specify an alternative
2597 section number in a pod file instead of having to treat each file as
2598 a separate case in Makefile. This can be done by adding two lines to the
2601 =for comment openssl_section:XXX
2603 The blank line is mandatory.
2607 *) New arguments -certform, -keyform and -pass for s_client and s_server
2608 to allow alternative format key and certificate files and passphrase
2612 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2613 update associated structures and add various utility functions.
2615 Add new policy related verify parameters, include policy checking in
2616 standard verify code. Enhance 'smime' application with extra parameters
2617 to support policy checking and print out.
2620 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2621 Nehemiah processors. These extensions support AES encryption in hardware
2622 as well as RNG (though RNG support is currently disabled).
2623 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2625 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2628 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2629 [Andy Polyakov and a number of other people]
2631 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2632 implementation contributed by IBM.
2633 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2635 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2636 exponent rather than 'unsigned long'. There is a corresponding change to
2637 the new 'rsa_keygen' element of the RSA_METHOD structure.
2638 [Jelte Jansen, Geoff Thorpe]
2640 *) Functionality for creating the initial serial number file is now
2641 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2643 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2644 number file to 1, which is bound to cause problems. To avoid
2645 the problems while respecting compatibility between different 0.9.7
2646 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2647 CA.pl for serial number initialization. With the new release 0.9.8,
2648 we can fix the problem directly in the 'ca' utility.)
2651 *) Reduced header interdepencies by declaring more opaque objects in
2652 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2653 give fewer recursive includes, which could break lazy source code - so
2654 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2655 developers should define this symbol when building and using openssl to
2656 ensure they track the recommended behaviour, interfaces, [etc], but
2657 backwards-compatible behaviour prevails when this isn't defined.
2660 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2663 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2664 This will generate a random key of the appropriate length based on the
2665 cipher context. The EVP_CIPHER can provide its own random key generation
2666 routine to support keys of a specific form. This is used in the des and
2667 3des routines to generate a key of the correct parity. Update S/MIME
2668 code to use new functions and hence generate correct parity DES keys.
2669 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2670 valid (weak or incorrect parity).
2673 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2674 as looking them up. This is useful when the verified structure may contain
2675 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2676 present unless the new PKCS7_NO_CRL flag is asserted.
2679 *) Extend ASN1 oid configuration module. It now additionally accepts the
2682 shortName = some long name, 1.2.3.4
2685 *) Reimplemented the BN_CTX implementation. There is now no more static
2686 limitation on the number of variables it can handle nor the depth of the
2687 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2688 information can now expand as required, and rather than having a single
2689 static array of bignums, BN_CTX now uses a linked-list of such arrays
2690 allowing it to expand on demand whilst maintaining the usefulness of
2691 BN_CTX's "bundling".
2694 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2695 to allow all RSA operations to function using a single BN_CTX.
2698 *) Preliminary support for certificate policy evaluation and checking. This
2699 is initially intended to pass the tests outlined in "Conformance Testing
2700 of Relying Party Client Certificate Path Processing Logic" v1.07.
2703 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2704 remained unused and not that useful. A variety of other little bignum
2705 tweaks and fixes have also been made continuing on from the audit (see
2709 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2710 associated ASN1, EVP and SSL functions and old ASN1 macros.
2713 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2714 and this should never fail. So the return value from the use of
2715 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2716 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2719 *) BN_CTX_get() should return zero-valued bignums, providing the same
2720 initialised value as BN_new().
2721 [Geoff Thorpe, suggested by Ulf Möller]
2723 *) Support for inhibitAnyPolicy certificate extension.
2726 *) An audit of the BIGNUM code is underway, for which debugging code is
2727 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2728 is considered valid when processing BIGNUMs, and causes execution to
2729 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2730 further steps are taken to deliberately pollute unused data in BIGNUM
2731 structures to try and expose faulty code further on. For now, openssl will
2732 (in its default mode of operation) continue to tolerate the inconsistent
2733 forms that it has tolerated in the past, but authors and packagers should
2734 consider trying openssl and their own applications when compiled with
2735 these debugging symbols defined. It will help highlight potential bugs in
2736 their own code, and will improve the test coverage for OpenSSL itself. At
2737 some point, these tighter rules will become openssl's default to improve
2738 maintainability, though the assert()s and other overheads will remain only
2739 in debugging configurations. See bn.h for more details.
2740 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2742 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2743 that can only be obtained through BN_CTX_new() (which implicitly
2744 initialises it). The presence of this function only made it possible
2745 to overwrite an existing structure (and cause memory leaks).
2748 *) Because of the callback-based approach for implementing LHASH as a
2749 template type, lh_insert() adds opaque objects to hash-tables and
2750 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2751 to clean up those corresponding objects before destroying the hash table
2752 (and losing the object pointers). So some over-zealous constifications in
2753 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2754 objects as "const" and the lh_doall[_arg] callback wrappers are not
2755 prototyped to have "const" restrictions on the object pointers they are
2756 given (and so aren't required to cast them away any more).
2759 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2760 (speed) prefers to use its own implementation. The two implementations
2761 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2762 its object type properly exposed (MS_TM) instead of casting to/from "char
2763 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2764 aren't necessarily the greatest nomenclatures - but this is what was used
2765 internally to the implementation so I've used that for now.
2768 *) Ensure that deprecated functions do not get compiled when
2769 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2770 the self-tests were still using deprecated key-generation functions so
2771 these have been updated also.
2774 *) Reorganise PKCS#7 code to separate the digest location functionality
2775 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2776 New function PKCS7_set_digest() to set the digest type for PKCS#7
2777 digestedData type. Add additional code to correctly generate the
2778 digestedData type and add support for this type in PKCS7 initialization
2782 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2783 structure of type "other".
2786 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2787 sure the loop does correctly stop and breaking ("division by zero")
2788 modulus operations are not performed. The (pre-generated) prime
2789 table crypto/bn/bn_prime.h was already correct, but it could not be
2790 re-generated on some platforms because of the "division by zero"
2791 situation in the script.
2792 [Ralf S. Engelschall]
2794 *) Update support for ECC-based TLS ciphersuites according to
2795 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2796 SHA-1 now is only used for "small" curves (where the
2797 representation of a field element takes up to 24 bytes); for
2798 larger curves, the field element resulting from ECDH is directly
2799 used as premaster secret.
2800 [Douglas Stebila (Sun Microsystems Laboratories)]
2802 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2803 curve secp160r1 to the tests.
2804 [Douglas Stebila (Sun Microsystems Laboratories)]
2806 *) Add the possibility to load symbols globally with DSO.
2807 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2809 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2810 control of the error stack.
2813 *) Add support for STORE in ENGINE.
2816 *) Add the STORE type. The intention is to provide a common interface
2817 to certificate and key stores, be they simple file-based stores, or
2818 HSM-type store, or LDAP stores, or...
2819 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2822 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2823 pass a list of arguments to any function as well as provide a way
2824 for a function to pass data back to the caller.
2827 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2828 works like BUF_strdup() but can be used to duplicate a portion of
2829 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2833 *) Add the function sk_find_ex() which works like sk_find(), but will
2834 return an index to an element even if an exact match couldn't be
2835 found. The index is guaranteed to point at the element where the
2836 searched-for key would be inserted to preserve sorting order.
2839 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2840 takes an extra flags argument for optional functionality. Currently,
2841 the following flags are defined:
2843 OBJ_BSEARCH_VALUE_ON_NOMATCH
2844 This one gets OBJ_bsearch_ex() to return a pointer to the first
2845 element where the comparing function returns a negative or zero
2848 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2849 This one gets OBJ_bsearch_ex() to return a pointer to the first
2850 element where the comparing function returns zero. This is useful
2851 if there are more than one element where the comparing function
2855 *) Make it possible to create self-signed certificates with 'openssl ca'
2856 in such a way that the self-signed certificate becomes part of the
2857 CA database and uses the same mechanisms for serial number generation
2858 as all other certificate signing. The new flag '-selfsign' enables
2859 this functionality. Adapt CA.sh and CA.pl.in.
2862 *) Add functionality to check the public key of a certificate request
2863 against a given private. This is useful to check that a certificate
2864 request can be signed by that key (self-signing).
2867 *) Make it possible to have multiple active certificates with the same
2868 subject in the CA index file. This is done only if the keyword
2869 'unique_subject' is set to 'no' in the main CA section (default
2870 if 'CA_default') of the configuration file. The value is saved
2871 with the database itself in a separate index attribute file,
2872 named like the index file with '.attr' appended to the name.
2875 *) Generate muti valued AVAs using '+' notation in config files for
2879 *) Support for nameConstraints certificate extension.
2882 *) Support for policyConstraints certificate extension.
2885 *) Support for policyMappings certificate extension.
2888 *) Make sure the default DSA_METHOD implementation only uses its
2889 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2890 and change its own handlers to be NULL so as to remove unnecessary
2891 indirection. This lets alternative implementations fallback to the
2892 default implementation more easily.
2895 *) Support for directoryName in GeneralName related extensions
2899 *) Make it possible to link applications using Makefile.shared.
2900 Make that possible even when linking against static libraries!
2903 *) Support for single pass processing for S/MIME signing. This now
2904 means that S/MIME signing can be done from a pipe, in addition
2905 cleartext signing (multipart/signed type) is effectively streaming
2906 and the signed data does not need to be all held in memory.
2908 This is done with a new flag PKCS7_STREAM. When this flag is set
2909 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2910 is done after the data is output (and digests calculated) in
2911 SMIME_write_PKCS7().
2914 *) Add full support for -rpath/-R, both in shared libraries and
2915 applications, at least on the platforms where it's known how
2919 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2920 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2921 will now compute a table of multiples of the generator that
2922 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2923 faster (notably in the case of a single point multiplication,
2924 scalar * generator).
2925 [Nils Larsch, Bodo Moeller]
2927 *) IPv6 support for certificate extensions. The various extensions
2928 which use the IP:a.b.c.d can now take IPv6 addresses using the
2929 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2933 *) Added an ENGINE that implements RSA by performing private key
2934 exponentiations with the GMP library. The conversions to and from
2935 GMP's mpz_t format aren't optimised nor are any montgomery forms
2936 cached, and on x86 it appears OpenSSL's own performance has caught up.
2937 However there are likely to be other architectures where GMP could
2938 provide a boost. This ENGINE is not built in by default, but it can be
2939 specified at Configure time and should be accompanied by the necessary
2940 linker additions, eg;
2941 ./config -DOPENSSL_USE_GMP -lgmp
2944 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2945 testing availability of engines with "-t" - the old behaviour is
2946 produced by increasing the feature's verbosity with "-tt".
2949 *) ECDSA routines: under certain error conditions uninitialized BN objects
2950 could be freed. Solution: make sure initialization is performed early
2951 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2955 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2956 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2957 software implementations. For DSA and DH, parameter generation can
2958 also be overriden by providing the appropriate method callbacks.
2961 *) Change the "progress" mechanism used in key-generation and
2962 primality testing to functions that take a new BN_GENCB pointer in
2963 place of callback/argument pairs. The new API functions have "_ex"
2964 postfixes and the older functions are reimplemented as wrappers for
2965 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2966 declarations of the old functions to help (graceful) attempts to
2967 migrate to the new functions. Also, the new key-generation API
2968 functions operate on a caller-supplied key-structure and return
2969 success/failure rather than returning a key or NULL - this is to
2970 help make "keygen" another member function of RSA_METHOD etc.
2972 Example for using the new callback interface:
2974 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2978 BN_GENCB_set(&my_cb, my_callback, my_arg);
2980 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2981 /* For the meaning of a, b in calls to my_callback(), see the
2982 * documentation of the function that calls the callback.
2983 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2984 * my_callback should return 1 if it wants BN_is_prime_ex()
2985 * to continue, or 0 to stop.
2990 *) Change the ZLIB compression method to be stateful, and make it
2991 available to TLS with the number defined in
2992 draft-ietf-tls-compression-04.txt.
2995 *) Add the ASN.1 structures and functions for CertificatePair, which
2996 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2998 CertificatePair ::= SEQUENCE {
2999 forward [0] Certificate OPTIONAL,
3000 reverse [1] Certificate OPTIONAL,
3001 -- at least one of the pair shall be present -- }
3003 Also implement the PEM functions to read and write certificate
3004 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3006 This needed to be defined, mostly for the sake of the LDAP
3007 attribute crossCertificatePair, but may prove useful elsewhere as
3011 *) Make it possible to inhibit symlinking of shared libraries in
3012 Makefile.shared, for Cygwin's sake.
3015 *) Extend the BIGNUM API by creating a function
3016 void BN_set_negative(BIGNUM *a, int neg);
3017 and a macro that behave like
3018 int BN_is_negative(const BIGNUM *a);
3020 to avoid the need to access 'a->neg' directly in applications.
3023 *) Implement fast modular reduction for pseudo-Mersenne primes
3024 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3025 EC_GROUP_new_curve_GFp() will now automatically use this
3027 [Nils Larsch <nla@trustcenter.de>]
3029 *) Add new lock type (CRYPTO_LOCK_BN).
3032 *) Change the ENGINE framework to automatically load engines
3033 dynamically from specific directories unless they could be
3034 found to already be built in or loaded. Move all the
3035 current engines except for the cryptodev one to a new
3037 The engines in engines/ are built as shared libraries if
3038 the "shared" options was given to ./Configure or ./config.
3039 Otherwise, they are inserted in libcrypto.a.
3040 /usr/local/ssl/engines is the default directory for dynamic
3041 engines, but that can be overriden at configure time through
3042 the usual use of --prefix and/or --openssldir, and at run
3043 time with the environment variable OPENSSL_ENGINES.
3044 [Geoff Thorpe and Richard Levitte]
3046 *) Add Makefile.shared, a helper makefile to build shared
3047 libraries. Addapt Makefile.org.
3050 *) Add version info to Win32 DLLs.
3051 [Peter 'Luna' Runestig" <peter@runestig.com>]
3053 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3054 can be added using this API to created arbitrary PKCS#12
3055 files while avoiding the low level API.
3057 New options to PKCS12_create(), key or cert can be NULL and
3058 will then be omitted from the output file. The encryption
3059 algorithm NIDs can be set to -1 for no encryption, the mac
3060 iteration count can be set to 0 to omit the mac.
3062 Enhance pkcs12 utility by making the -nokeys and -nocerts
3063 options work when creating a PKCS#12 file. New option -nomac
3064 to omit the mac, NONE can be set for an encryption algorithm.
3065 New code is modified to use the enhanced PKCS12_create()
3066 instead of the low level API.
3069 *) Extend ASN1 encoder to support indefinite length constructed
3070 encoding. This can output sequences tags and octet strings in
3071 this form. Modify pk7_asn1.c to support indefinite length
3072 encoding. This is experimental and needs additional code to
3073 be useful, such as an ASN1 bio and some enhanced streaming
3076 Extend template encode functionality so that tagging is passed
3077 down to the template encoder.
3080 *) Let 'openssl req' fail if an argument to '-newkey' is not
3081 recognized instead of using RSA as a default.
3084 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3085 As these are not official, they are not included in "ALL";
3086 the "ECCdraft" ciphersuite group alias can be used to select them.
3087 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3089 *) Add ECDH engine support.
3090 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3092 *) Add ECDH in new directory crypto/ecdh/.
3093 [Douglas Stebila (Sun Microsystems Laboratories)]
3095 *) Let BN_rand_range() abort with an error after 100 iterations
3096 without success (which indicates a broken PRNG).
3099 *) Change BN_mod_sqrt() so that it verifies that the input value
3100 is really the square of the return value. (Previously,
3101 BN_mod_sqrt would show GIGO behaviour.)
3104 *) Add named elliptic curves over binary fields from X9.62, SECG,
3105 and WAP/WTLS; add OIDs that were still missing.
3107 [Sheueling Chang Shantz and Douglas Stebila
3108 (Sun Microsystems Laboratories)]
3110 *) Extend the EC library for elliptic curves over binary fields
3111 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3114 EC_GF2m_simple_method
3118 EC_GROUP_new_curve_GF2m
3119 EC_GROUP_set_curve_GF2m
3120 EC_GROUP_get_curve_GF2m
3121 EC_POINT_set_affine_coordinates_GF2m
3122 EC_POINT_get_affine_coordinates_GF2m
3123 EC_POINT_set_compressed_coordinates_GF2m
3125 Point compression for binary fields is disabled by default for
3126 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3129 As binary polynomials are represented as BIGNUMs, various members
3130 of the EC_GROUP and EC_POINT data structures can be shared
3131 between the implementations for prime fields and binary fields;
3132 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3133 are essentially identical to their ..._GFp counterparts.
3134 (For simplicity, the '..._GFp' prefix has been dropped from
3135 various internal method names.)
3137 An internal 'field_div' method (similar to 'field_mul' and
3138 'field_sqr') has been added; this is used only for binary fields.
3140 [Sheueling Chang Shantz and Douglas Stebila
3141 (Sun Microsystems Laboratories)]
3143 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3144 through methods ('mul', 'precompute_mult').
3146 The generic implementations (now internally called 'ec_wNAF_mul'
3147 and 'ec_wNAF_precomputed_mult') remain the default if these
3148 methods are undefined.
3150 [Sheueling Chang Shantz and Douglas Stebila
3151 (Sun Microsystems Laboratories)]
3153 *) New function EC_GROUP_get_degree, which is defined through
3154 EC_METHOD. For curves over prime fields, this returns the bit
3155 length of the modulus.
3157 [Sheueling Chang Shantz and Douglas Stebila
3158 (Sun Microsystems Laboratories)]
3160 *) New functions EC_GROUP_dup, EC_POINT_dup.
3161 (These simply call ..._new and ..._copy).
3163 [Sheueling Chang Shantz and Douglas Stebila
3164 (Sun Microsystems Laboratories)]
3166 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3167 Polynomials are represented as BIGNUMs (where the sign bit is not
3168 used) in the following functions [macros]:
3171 BN_GF2m_sub [= BN_GF2m_add]
3172 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3173 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3174 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3176 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3177 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3178 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3179 BN_GF2m_cmp [= BN_ucmp]
3181 (Note that only the 'mod' functions are actually for fields GF(2^m).
3182 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3184 For some functions, an the irreducible polynomial defining a
3185 field can be given as an 'unsigned int[]' with strictly
3186 decreasing elements giving the indices of those bits that are set;
3187 i.e., p[] represents the polynomial
3188 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3190 p[0] > p[1] > ... > p[k] = 0.
3191 This applies to the following functions:
3196 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3197 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3199 BN_GF2m_mod_sqrt_arr
3200 BN_GF2m_mod_solve_quad_arr
3204 Conversion can be performed by the following functions:
3209 bntest.c has additional tests for binary polynomial arithmetic.
3211 Two implementations for BN_GF2m_mod_div() are available.
3212 The default algorithm simply uses BN_GF2m_mod_inv() and
3213 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3214 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3215 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3217 [Sheueling Chang Shantz and Douglas Stebila
3218 (Sun Microsystems Laboratories)]
3220 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3221 functionality is disabled at compile-time.
3222 [Douglas Stebila <douglas.stebila@sun.com>]
3224 *) Change default behaviour of 'openssl asn1parse' so that more
3225 information is visible when viewing, e.g., a certificate:
3227 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3228 mode the content of non-printable OCTET STRINGs is output in a
3229 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3230 avoid the appearance of a printable string.
3231 [Nils Larsch <nla@trustcenter.de>]
3233 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3235 EC_GROUP_set_asn1_flag()
3236 EC_GROUP_get_asn1_flag()
3237 EC_GROUP_set_point_conversion_form()
3238 EC_GROUP_get_point_conversion_form()
3239 These control ASN1 encoding details:
3240 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3241 has been set to OPENSSL_EC_NAMED_CURVE.
3242 - Points are encoded in uncompressed form by default; options for
3243 asn1_for are as for point2oct, namely
3244 POINT_CONVERSION_COMPRESSED
3245 POINT_CONVERSION_UNCOMPRESSED
3246 POINT_CONVERSION_HYBRID
3248 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3251 EC_GROUP_get0_seed()
3252 EC_GROUP_get_seed_len()
3253 This is used only for ASN1 purposes (so far).
3254 [Nils Larsch <nla@trustcenter.de>]
3256 *) Add 'field_type' member to EC_METHOD, which holds the NID
3257 of the appropriate field type OID. The new function
3258 EC_METHOD_get_field_type() returns this value.
3259 [Nils Larsch <nla@trustcenter.de>]
3264 EC_POINT_point2hex()
3265 EC_POINT_hex2point()
3266 providing useful interfaces to EC_POINT_point2oct() and
3267 EC_POINT_oct2point().
3268 [Nils Larsch <nla@trustcenter.de>]
3270 *) Change internals of the EC library so that the functions
3271 EC_GROUP_set_generator()
3272 EC_GROUP_get_generator()
3273 EC_GROUP_get_order()
3274 EC_GROUP_get_cofactor()
3275 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3276 to methods, which would lead to unnecessary code duplication when
3277 adding different types of curves.
3278 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3280 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3281 arithmetic, and such that modified wNAFs are generated
3282 (which avoid length expansion in many cases).
3285 *) Add a function EC_GROUP_check_discriminant() (defined via
3286 EC_METHOD) that verifies that the curve discriminant is non-zero.
3288 Add a function EC_GROUP_check() that makes some sanity tests
3289 on a EC_GROUP, its generator and order. This includes
3290 EC_GROUP_check_discriminant().
3291 [Nils Larsch <nla@trustcenter.de>]
3293 *) Add ECDSA in new directory crypto/ecdsa/.
3295 Add applications 'openssl ecparam' and 'openssl ecdsa'
3296 (these are based on 'openssl dsaparam' and 'openssl dsa').
3298 ECDSA support is also included in various other files across the
3299 library. Most notably,
3300 - 'openssl req' now has a '-newkey ecdsa:file' option;
3301 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3302 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3303 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3304 them suitable for ECDSA where domain parameters must be
3305 extracted before the specific public key;
3306 - ECDSA engine support has been added.
3307 [Nils Larsch <nla@trustcenter.de>]
3309 *) Include some named elliptic curves, and add OIDs from X9.62,
3310 SECG, and WAP/WTLS. Each curve can be obtained from the new
3312 EC_GROUP_new_by_curve_name(),
3313 and the list of available named curves can be obtained with
3314 EC_get_builtin_curves().
3315 Also add a 'curve_name' member to EC_GROUP objects, which can be
3317 EC_GROUP_set_curve_name()
3318 EC_GROUP_get_curve_name()
3319 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3321 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3322 was actually never needed) and in BN_mul(). The removal in BN_mul()
3323 required a small change in bn_mul_part_recursive() and the addition
3324 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3325 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3326 bn_sub_words() and bn_add_words() except they take arrays with
3330 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3332 *) Cleanse PEM buffers before freeing them since they may contain
3334 [Benjamin Bennett <ben@psc.edu>]
3336 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3337 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3338 authentication-only ciphersuites.
3341 *) Since AES128 and AES256 share a single mask bit in the logic of
3342 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3343 kludge to work properly if AES128 is available and AES256 isn't.
3346 *) Expand security boundary to match 1.1.1 module.
3349 *) Remove redundant features: hash file source, editing of test vectors
3350 modify fipsld to use external fips_premain.c signature.
3353 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3354 run algorithm test programs.
3357 *) Make algorithm test programs more tolerant of whitespace.
3360 *) Have SSL/TLS server implementation tolerate "mismatched" record
3361 protocol version while receiving ClientHello even if the
3362 ClientHello is fragmented. (The server can't insist on the
3363 particular protocol version it has chosen before the ServerHello
3364 message has informed the client about his choice.)
3367 *) Load error codes if they are not already present instead of using a
3368 static variable. This allows them to be cleanly unloaded and reloaded.
3371 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3373 *) Introduce limits to prevent malicious keys being able to
3374 cause a denial of service. (CVE-2006-2940)
3375 [Steve Henson, Bodo Moeller]
3377 *) Fix ASN.1 parsing of certain invalid structures that can result
3378 in a denial of service. (CVE-2006-2937) [Steve Henson]
3380 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3381 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3383 *) Fix SSL client code which could crash if connecting to a
3384 malicious SSLv2 server. (CVE-2006-4343)
3385 [Tavis Ormandy and Will Drewry, Google Security Team]
3387 *) Change ciphersuite string processing so that an explicit
3388 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3389 will no longer include "AES128-SHA"), and any other similar
3390 ciphersuite (same bitmap) from *other* protocol versions (so that
3391 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3392 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3393 changes from 0.9.8b and 0.9.8d.
3396 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3398 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3399 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3401 *) Change the Unix randomness entropy gathering to use poll() when
3402 possible instead of select(), since the latter has some
3403 undesirable limitations.
3404 [Darryl Miles via Richard Levitte and Bodo Moeller]
3406 *) Disable rogue ciphersuites:
3408 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3409 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3410 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3412 The latter two were purportedly from
3413 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3416 Also deactive the remaining ciphersuites from
3417 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3418 unofficial, and the ID has long expired.
3421 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3422 dual-core machines) and other potential thread-safety issues.
3425 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3427 *) Adapt fipsld and the build system to link against the validated FIPS
3428 module in FIPS mode.
3431 *) Fixes for VC++ 2005 build under Windows.
3434 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3435 from a Windows bash shell such as MSYS. It is autodetected from the
3436 "config" script when run from a VC++ environment. Modify standard VC++
3437 build to use fipscanister.o from the GNU make build.
3440 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3442 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3443 The value now differs depending on if you build for FIPS or not.
3444 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3445 safely run with a non-FIPSed libcrypto, as it may crash because of
3446 the difference induced by this change.
3449 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3451 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3452 (part of SSL_OP_ALL). This option used to disable the
3453 countermeasure against man-in-the-middle protocol-version
3454 rollback in the SSL 2.0 server implementation, which is a bad
3455 idea. (CVE-2005-2969)
3457 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3458 for Information Security, National Institute of Advanced Industrial
3459 Science and Technology [AIST], Japan)]
3461 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3462 mainly for FIPS compliance and not fully integrated at this stage.
3465 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3466 the exponentiation using a fixed-length exponent. (Otherwise,
3467 the information leaked through timing could expose the secret key
3468 after many signatures; cf. Bleichenbacher's attack on DSA with
3472 *) Make a new fixed-window mod_exp implementation the default for
3473 RSA, DSA, and DH private-key operations so that the sequence of
3474 squares and multiplies and the memory access pattern are
3475 independent of the particular secret key. This will mitigate
3476 cache-timing and potential related attacks.
3478 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3479 and this is automatically used by BN_mod_exp_mont() if the new flag
3480 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3481 will use this BN flag for private exponents unless the flag
3482 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3483 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3485 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3487 *) Change the client implementation for SSLv23_method() and
3488 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3489 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3490 (Previously, the SSL 2.0 backwards compatible Client Hello
3491 message format would be used even with SSL_OP_NO_SSLv2.)
3494 *) Add support for smime-type MIME parameter in S/MIME messages which some
3498 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3499 a threadsafe manner. Modify rsa code to use new function and add calls
3500 to dsa and dh code (which had race conditions before).
3503 *) Include the fixed error library code in the C error file definitions
3504 instead of fixing them up at runtime. This keeps the error code
3505 structures constant.
3508 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3510 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3513 *) Fixes for newer kerberos headers. NB: the casts are needed because
3514 the 'length' field is signed on one version and unsigned on another
3515 with no (?) obvious way to tell the difference, without these VC++
3516 complains. Also the "definition" of FAR (blank) is no longer included
3517 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3518 some needed definitions.
3521 *) Undo Cygwin change.
3524 *) Added support for proxy certificates according to RFC 3820.
3525 Because they may be a security thread to unaware applications,
3526 they must be explicitely allowed in run-time. See
3527 docs/HOWTO/proxy_certificates.txt for further information.
3530 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3532 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3533 server and client random values. Previously
3534 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3535 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3537 This change has negligible security impact because:
3539 1. Server and client random values still have 24 bytes of pseudo random
3542 2. Server and client random values are sent in the clear in the initial
3545 3. The master secret is derived using the premaster secret (48 bytes in
3546 size for static RSA ciphersuites) as well as client server and random
3549 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3552 [Stephen Henson, reported by UK NISCC]
3554 *) Use Windows randomness collection on Cygwin.
3557 *) Fix hang in EGD/PRNGD query when communication socket is closed
3558 prematurely by EGD/PRNGD.
3559 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3561 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3564 *) Back-port of selected performance improvements from development
3565 branch, as well as improved support for PowerPC platforms.
3568 *) Add lots of checks for memory allocation failure, error codes to indicate
3569 failure and freeing up memory if a failure occurs.
3570 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3572 *) Add new -passin argument to dgst.
3575 *) Perform some character comparisons of different types in X509_NAME_cmp:
3576 this is needed for some certificates that reencode DNs into UTF8Strings
3577 (in violation of RFC3280) and can't or wont issue name rollover
3581 *) Make an explicit check during certificate validation to see that
3582 the CA setting in each certificate on the chain is correct. As a
3583 side effect always do the following basic checks on extensions,
3584 not just when there's an associated purpose to the check:
3586 - if there is an unhandled critical extension (unless the user
3587 has chosen to ignore this fault)
3588 - if the path length has been exceeded (if one is set at all)
3589 - that certain extensions fit the associated purpose (if one has
3593 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3595 *) Avoid a race condition when CRLs are checked in a multi threaded
3596 environment. This would happen due to the reordering of the revoked
3597 entries during signature checking and serial number lookup. Now the
3598 encoding is cached and the serial number sort performed under a lock.
3599 Add new STACK function sk_is_sorted().
3602 *) Add Delta CRL to the extension code.
3605 *) Various fixes to s3_pkt.c so alerts are sent properly.
3606 [David Holmes <d.holmes@f5.com>]
3608 *) Reduce the chances of duplicate issuer name and serial numbers (in
3609 violation of RFC3280) using the OpenSSL certificate creation utilities.
3610 This is done by creating a random 64 bit value for the initial serial
3611 number when a serial number file is created or when a self signed
3612 certificate is created using 'openssl req -x509'. The initial serial
3613 number file is created using 'openssl x509 -next_serial' in CA.pl
3614 rather than being initialized to 1.
3617 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3619 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3620 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3621 [Joe Orton, Steve Henson]
3623 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3625 [Joe Orton, Steve Henson]
3627 *) Make it possible to have multiple active certificates with the same
3628 subject in the CA index file. This is done only if the keyword
3629 'unique_subject' is set to 'no' in the main CA section (default
3630 if 'CA_default') of the configuration file. The value is saved
3631 with the database itself in a separate index attribute file,
3632 named like the index file with '.attr' appended to the name.
3635 *) X509 verify fixes. Disable broken certificate workarounds when
3636 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3637 keyUsage extension present. Don't accept CRLs with unhandled critical
3638 extensions: since verify currently doesn't process CRL extensions this
3639 rejects a CRL with *any* critical extensions. Add new verify error codes
3643 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3644 A clarification of RFC2560 will require the use of OCTET STRINGs and
3645 some implementations cannot handle the current raw format. Since OpenSSL
3646 copies and compares OCSP nonces as opaque blobs without any attempt at
3647 parsing them this should not create any compatibility issues.
3650 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3651 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3652 this HMAC (and other) operations are several times slower than OpenSSL
3656 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3657 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3659 *) Use the correct content when signing type "other".
3662 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3664 *) Fix various bugs revealed by running the NISCC test suite:
3666 Stop out of bounds reads in the ASN1 code when presented with
3667 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3669 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3671 If verify callback ignores invalid public key errors don't try to check
3672 certificate signature with the NULL public key.
3676 *) New -ignore_err option in ocsp application to stop the server
3677 exiting on the first error in a request.
3680 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3681 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3685 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3686 extra data after the compression methods not only for TLS 1.0
3687 but also for SSL 3.0 (as required by the specification).
3688 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3690 *) Change X509_certificate_type() to mark the key as exported/exportable
3691 when it's 512 *bits* long, not 512 bytes.
3694 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3695 blocks during encryption.
3698 *) Various fixes to base64 BIO and non blocking I/O. On write
3699 flushes were not handled properly if the BIO retried. On read
3700 data was not being buffered properly and had various logic bugs.
3701 This also affects blocking I/O when the data being decoded is a
3705 *) Various S/MIME bugfixes and compatibility changes:
3706 output correct application/pkcs7 MIME type if
3707 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3708 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3709 of files as .eml work). Correctly handle very long lines in MIME
3713 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3715 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3716 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3717 a protocol version number mismatch like a decryption error
3718 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3721 *) Turn on RSA blinding by default in the default implementation
3722 to avoid a timing attack. Applications that don't want it can call
3723 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3724 They would be ill-advised to do so in most cases.
3725 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3727 *) Change RSA blinding code so that it works when the PRNG is not
3728 seeded (in this case, the secret RSA exponent is abused as
3729 an unpredictable seed -- if it is not unpredictable, there
3730 is no point in blinding anyway). Make RSA blinding thread-safe
3731 by remembering the creator's thread ID in rsa->blinding and
3732 having all other threads use local one-time blinding factors
3733 (this requires more computation than sharing rsa->blinding, but
3734 avoids excessive locking; and if an RSA object is not shared
3735 between threads, blinding will still be very fast).
3738 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3739 ENGINE as defaults for all supported algorithms irrespective of
3740 the 'flags' parameter. 'flags' is now honoured, so applications
3741 should make sure they are passing it correctly.
3744 *) Target "mingw" now allows native Windows code to be generated in
3745 the Cygwin environment as well as with the MinGW compiler.
3748 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3750 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3751 via timing by performing a MAC computation even if incorrrect
3752 block cipher padding has been found. This is a countermeasure
3753 against active attacks where the attacker has to distinguish
3754 between bad padding and a MAC verification error. (CVE-2003-0078)
3756 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3757 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3758 Martin Vuagnoux (EPFL, Ilion)]
3760 *) Make the no-err option work as intended. The intention with no-err
3761 is not to have the whole error stack handling routines removed from
3762 libcrypto, it's only intended to remove all the function name and
3763 reason texts, thereby removing some of the footprint that may not
3764 be interesting if those errors aren't displayed anyway.
3766 NOTE: it's still possible for any application or module to have it's
3767 own set of error texts inserted. The routines are there, just not
3768 used by default when no-err is given.
3771 *) Add support for FreeBSD on IA64.
3772 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3774 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3775 Kerberos function mit_des_cbc_cksum(). Before this change,
3776 the value returned by DES_cbc_cksum() was like the one from
3777 mit_des_cbc_cksum(), except the bytes were swapped.
3778 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3780 *) Allow an application to disable the automatic SSL chain building.
3781 Before this a rather primitive chain build was always performed in
3782 ssl3_output_cert_chain(): an application had no way to send the
3783 correct chain if the automatic operation produced an incorrect result.
3785 Now the chain builder is disabled if either:
3787 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3789 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3791 The reasoning behind this is that an application would not want the
3792 auto chain building to take place if extra chain certificates are
3793 present and it might also want a means of sending no additional
3794 certificates (for example the chain has two certificates and the
3798 *) Add the possibility to build without the ENGINE framework.
3799 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3801 *) Under Win32 gmtime() can return NULL: check return value in
3802 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3805 *) DSA routines: under certain error conditions uninitialized BN objects
3806 could be freed. Solution: make sure initialization is performed early
3807 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3808 Nils Larsch <nla@trustcenter.de> via PR#459)
3811 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3812 checked on reconnect on the client side, therefore session resumption
3813 could still fail with a "ssl session id is different" error. This
3814 behaviour is masked when SSL_OP_ALL is used due to
3815 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3816 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3817 followup to PR #377.
3820 *) IA-32 assembler support enhancements: unified ELF targets, support
3821 for SCO/Caldera platforms, fix for Cygwin shared build.
3824 *) Add support for FreeBSD on sparc64. As a consequence, support for
3825 FreeBSD on non-x86 processors is separate from x86 processors on
3826 the config script, much like the NetBSD support.
3827 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3829 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3831 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3834 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3835 code (06) was taken as the first octet of the session ID and the last
3836 octet was ignored consequently. As a result SSLv2 client side session
3837 caching could not have worked due to the session ID mismatch between
3839 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3843 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3844 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3848 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3849 seems that in spite of existing for more than a year, many application
3850 author have done nothing to provide the necessary callbacks, which
3851 means that this particular engine will not work properly anywhere.
3852 This is a very unfortunate situation which forces us, in the name
3853 of usability, to give the hw_ncipher.c a static lock, which is part
3855 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3856 appear in 0.9.8 or later. We EXPECT application authors to have
3857 dealt properly with this when 0.9.8 is released (unless we actually
3858 make such changes in the libcrypto locking code that changes will
3859 have to be made anyway).
3862 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3863 octets have been read, EOF or an error occurs. Without this change
3864 some truncated ASN1 structures will not produce an error.
3867 *) Disable Heimdal support, since it hasn't been fully implemented.
3868 Still give the possibility to force the use of Heimdal, but with
3869 warnings and a request that patches get sent to openssl-dev.
3872 *) Add the VC-CE target, introduce the WINCE sysname, and add
3873 INSTALL.WCE and appropriate conditionals to make it build.
3874 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3876 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3877 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3878 edit numbers of the version.
3879 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3881 *) Introduce safe string copy and catenation functions
3882 (BUF_strlcpy() and BUF_strlcat()).
3883 [Ben Laurie (CHATS) and Richard Levitte]
3885 *) Avoid using fixed-size buffers for one-line DNs.
3886 [Ben Laurie (CHATS)]
3888 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3889 resizing buffers containing secrets, and use where appropriate.
3890 [Ben Laurie (CHATS)]
3892 *) Avoid using fixed size buffers for configuration file location.
3893 [Ben Laurie (CHATS)]
3895 *) Avoid filename truncation for various CA files.
3896 [Ben Laurie (CHATS)]
3898 *) Use sizeof in preference to magic numbers.
3899 [Ben Laurie (CHATS)]
3901 *) Avoid filename truncation in cert requests.
3902 [Ben Laurie (CHATS)]
3904 *) Add assertions to check for (supposedly impossible) buffer
3906 [Ben Laurie (CHATS)]
3908 *) Don't cache truncated DNS entries in the local cache (this could
3909 potentially lead to a spoofing attack).
3910 [Ben Laurie (CHATS)]
3912 *) Fix various buffers to be large enough for hex/decimal
3913 representations in a platform independent manner.
3914 [Ben Laurie (CHATS)]
3916 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3917 resizing buffers containing secrets, and use where appropriate.
3918 [Ben Laurie (CHATS)]
3920 *) Add BIO_indent() to avoid much slightly worrying code to do
3922 [Ben Laurie (CHATS)]
3924 *) Convert sprintf()/BIO_puts() to BIO_printf().
3925 [Ben Laurie (CHATS)]
3927 *) buffer_gets() could terminate with the buffer only half
3929 [Ben Laurie (CHATS)]
3931 *) Add assertions to prevent user-supplied crypto functions from
3932 overflowing internal buffers by having large block sizes, etc.
3933 [Ben Laurie (CHATS)]
3935 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3937 [Ben Laurie (CHATS)]
3939 *) Eliminate unused copy of key in RC4.
3940 [Ben Laurie (CHATS)]
3942 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3943 [Ben Laurie (CHATS)]
3945 *) Fix off-by-one error in EGD path.
3946 [Ben Laurie (CHATS)]
3948 *) If RANDFILE path is too long, ignore instead of truncating.
3949 [Ben Laurie (CHATS)]
3951 *) Eliminate unused and incorrectly sized X.509 structure
3953 [Ben Laurie (CHATS)]
3955 *) Eliminate unused and dangerous function knumber().
3956 [Ben Laurie (CHATS)]
3958 *) Eliminate unused and dangerous structure, KSSL_ERR.
3959 [Ben Laurie (CHATS)]
3961 *) Protect against overlong session ID context length in an encoded
3962 session object. Since these are local, this does not appear to be
3964 [Ben Laurie (CHATS)]
3966 *) Change from security patch (see 0.9.6e below) that did not affect
3967 the 0.9.6 release series:
3969 Remote buffer overflow in SSL3 protocol - an attacker could
3970 supply an oversized master key in Kerberos-enabled versions.
3972 [Ben Laurie (CHATS)]
3974 *) Change the SSL kerb5 codes to match RFC 2712.
3977 *) Make -nameopt work fully for req and add -reqopt switch.
3978 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3980 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3981 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3983 *) Make sure tests can be performed even if the corresponding algorithms
3984 have been removed entirely. This was also the last step to make
3985 OpenSSL compilable with DJGPP under all reasonable conditions.
3986 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3988 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3989 to allow version independent disabling of normally unselected ciphers,
3990 which may be activated as a side-effect of selecting a single cipher.
3992 (E.g., cipher list string "RSA" enables ciphersuites that are left
3993 out of "ALL" because they do not provide symmetric encryption.
3994 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3995 [Lutz Jaenicke, Bodo Moeller]
3997 *) Add appropriate support for separate platform-dependent build
3998 directories. The recommended way to make a platform-dependent
3999 build directory is the following (tested on Linux), maybe with
4002 # Place yourself outside of the OpenSSL source tree. In
4003 # this example, the environment variable OPENSSL_SOURCE
4004 # is assumed to contain the absolute OpenSSL source directory.
4005 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4006 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4007 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4008 mkdir -p `dirname $F`
4009 ln -s $OPENSSL_SOURCE/$F $F
4012 To be absolutely sure not to disturb the source tree, a "make clean"
4013 is a good thing. If it isn't successfull, don't worry about it,
4014 it probably means the source directory is very clean.
4017 *) Make sure any ENGINE control commands make local copies of string
4018 pointers passed to them whenever necessary. Otherwise it is possible
4019 the caller may have overwritten (or deallocated) the original string
4020 data when a later ENGINE operation tries to use the stored values.
4021 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4023 *) Improve diagnostics in file reading and command-line digests.
4024 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4026 *) Add AES modes CFB and OFB to the object database. Correct an
4027 error in AES-CFB decryption.
4030 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4031 allows existing EVP_CIPHER_CTX structures to be reused after
4032 calling EVP_*Final(). This behaviour is used by encryption
4033 BIOs and some applications. This has the side effect that
4034 applications must explicitly clean up cipher contexts with
4035 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4038 *) Check the values of dna and dnb in bn_mul_recursive before calling
4039 bn_mul_comba (a non zero value means the a or b arrays do not contain
4040 n2 elements) and fallback to bn_mul_normal if either is not zero.
4043 *) Fix escaping of non-ASCII characters when using the -subj option
4044 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4047 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4048 form for "surname", serialNumber has no short form.
4049 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4050 therefore remove "mail" short name for "internet 7".
4051 The OID for unique identifiers in X509 certificates is
4052 x500UniqueIdentifier, not uniqueIdentifier.
4053 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4056 *) Add an "init" command to the ENGINE config module and auto initialize
4057 ENGINEs. Without any "init" command the ENGINE will be initialized
4058 after all ctrl commands have been executed on it. If init=1 the
4059 ENGINE is initailized at that point (ctrls before that point are run
4060 on the uninitialized ENGINE and after on the initialized one). If
4061 init=0 then the ENGINE will not be iniatialized at all.
4064 *) Fix the 'app_verify_callback' interface so that the user-defined
4065 argument is actually passed to the callback: In the
4066 SSL_CTX_set_cert_verify_callback() prototype, the callback
4067 declaration has been changed from
4070 int (*cb)(X509_STORE_CTX *,void *);
4071 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4072 i=s->ctx->app_verify_callback(&ctx)
4073 has been changed into
4074 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4076 To update applications using SSL_CTX_set_cert_verify_callback(),
4077 a dummy argument can be added to their callback functions.
4078 [D. K. Smetters <smetters@parc.xerox.com>]
4080 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4081 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4083 *) Add and OPENSSL_LOAD_CONF define which will cause
4084 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4085 This allows older applications to transparently support certain
4086 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4087 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4088 load the config file and OPENSSL_add_all_algorithms_conf() which will
4089 always load it have also been added.
4092 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4093 Adjust NIDs and EVP layer.
4094 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4096 *) Config modules support in openssl utility.
4098 Most commands now load modules from the config file,
4099 though in a few (such as version) this isn't done
4100 because it couldn't be used for anything.
4102 In the case of ca and req the config file used is
4103 the same as the utility itself: that is the -config
4104 command line option can be used to specify an
4108 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4109 use "openssl_conf" if filename is NULL use default openssl config file.
4112 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4113 config section name. Add a new flag to tolerate a missing config file
4114 and move code to CONF_modules_load_file().
4117 *) Support for crypto accelerator cards from Accelerated Encryption
4118 Processing, www.aep.ie. (Use engine 'aep')
4119 The support was copied from 0.9.6c [engine] and adapted/corrected
4120 to work with the new engine framework.
4121 [AEP Inc. and Richard Levitte]
4123 *) Support for SureWare crypto accelerator cards from Baltimore
4124 Technologies. (Use engine 'sureware')
4125 The support was copied from 0.9.6c [engine] and adapted
4126 to work with the new engine framework.
4129 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4130 make the newer ENGINE framework commands for the CHIL engine work.
4131 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4133 *) Make it possible to produce shared libraries on ReliantUNIX.
4134 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4136 *) Add the configuration target debug-linux-ppro.
4137 Make 'openssl rsa' use the general key loading routines
4138 implemented in apps.c, and make those routines able to
4139 handle the key format FORMAT_NETSCAPE and the variant
4141 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4143 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4144 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4146 *) Add -keyform to rsautl, and document -engine.
4147 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4149 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4150 BIO_R_NO_SUCH_FILE error code rather than the generic
4151 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4154 *) Add new functions
4156 ERR_peek_last_error_line
4157 ERR_peek_last_error_line_data.
4158 These are similar to
4161 ERR_peek_error_line_data,
4162 but report on the latest error recorded rather than the first one
4163 still in the error queue.
4164 [Ben Laurie, Bodo Moeller]
4166 *) default_algorithms option in ENGINE config module. This allows things
4168 default_algorithms = ALL
4169 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4172 *) Prelminary ENGINE config module.
4175 *) New experimental application configuration code.
4178 *) Change the AES code to follow the same name structure as all other
4179 symmetric ciphers, and behave the same way. Move everything to
4180 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4181 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4183 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4184 [Ben Laurie and Theo de Raadt]
4186 *) Add option to output public keys in req command.
4187 [Massimiliano Pala madwolf@openca.org]
4189 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4190 (up to about 10% better than before for P-192 and P-224).
4193 *) New functions/macros
4195 SSL_CTX_set_msg_callback(ctx, cb)
4196 SSL_CTX_set_msg_callback_arg(ctx, arg)
4197 SSL_set_msg_callback(ssl, cb)
4198 SSL_set_msg_callback_arg(ssl, arg)
4200 to request calling a callback function
4202 void cb(int write_p, int version, int content_type,
4203 const void *buf, size_t len, SSL *ssl, void *arg)
4205 whenever a protocol message has been completely received
4206 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4207 protocol version according to which the SSL library interprets
4208 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4209 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4210 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4211 specification (change_cipher_spec(20), alert(21), handshake(22)).
4212 'buf' and 'len' point to the actual message, 'ssl' to the
4213 SSL object, and 'arg' is the application-defined value set by
4214 SSL[_CTX]_set_msg_callback_arg().
4216 'openssl s_client' and 'openssl s_server' have new '-msg' options
4217 to enable a callback that displays all protocol messages.
4220 *) Change the shared library support so shared libraries are built as
4221 soon as the corresponding static library is finished, and thereby get
4222 openssl and the test programs linked against the shared library.
4223 This still only happens when the keyword "shard" has been given to
4224 the configuration scripts.
4226 NOTE: shared library support is still an experimental thing, and
4227 backward binary compatibility is still not guaranteed.
4228 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4230 *) Add support for Subject Information Access extension.
4231 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4233 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4234 additional bytes when new memory had to be allocated, not just
4235 when reusing an existing buffer.
4238 *) New command line and configuration option 'utf8' for the req command.
4239 This allows field values to be specified as UTF8 strings.
4242 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4243 runs for the former and machine-readable output for the latter.
4246 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4247 of the e-mail address in the DN (i.e., it will go into a certificate
4248 extension only). The new configuration file option 'email_in_dn = no'
4249 has the same effect.
4250 [Massimiliano Pala madwolf@openca.org]
4252 *) Change all functions with names starting with des_ to be starting
4253 with DES_ instead. Add wrappers that are compatible with libdes,
4254 but are named _ossl_old_des_*. Finally, add macros that map the
4255 des_* symbols to the corresponding _ossl_old_des_* if libdes
4256 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4257 desired, the des_* symbols will be mapped to DES_*, with one
4260 Since we provide two compatibility mappings, the user needs to
4261 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4262 compatibility is desired. The default (i.e., when that macro
4263 isn't defined) is OpenSSL 0.9.6c compatibility.
4265 There are also macros that enable and disable the support of old
4266 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4267 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4268 are defined, the default will apply: to support the old des routines.
4270 In either case, one must include openssl/des.h to get the correct
4271 definitions. Do not try to just include openssl/des_old.h, that
4274 NOTE: This is a major break of an old API into a new one. Software
4275 authors are encouraged to switch to the DES_ style functions. Some
4276 time in the future, des_old.h and the libdes compatibility functions
4277 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4278 default), and then completely removed.
4281 *) Test for certificates which contain unsupported critical extensions.
4282 If such a certificate is found during a verify operation it is
4283 rejected by default: this behaviour can be overridden by either
4284 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4285 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4286 X509_supported_extension() has also been added which returns 1 if a
4287 particular extension is supported.
4290 *) Modify the behaviour of EVP cipher functions in similar way to digests
4291 to retain compatibility with existing code.
4294 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4295 compatibility with existing code. In particular the 'ctx' parameter does
4296 not have to be to be initialized before the call to EVP_DigestInit() and
4297 it is tidied up after a call to EVP_DigestFinal(). New function
4298 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4299 EVP_MD_CTX_copy() changed to not require the destination to be
4300 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4301 requires the destination to be valid.
4303 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4304 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4307 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4308 so that complete 'Handshake' protocol structures are kept in memory
4309 instead of overwriting 'msg_type' and 'length' with 'body' data.
4312 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4313 [Massimo Santin via Richard Levitte]
4315 *) Major restructuring to the underlying ENGINE code. This includes
4316 reduction of linker bloat, separation of pure "ENGINE" manipulation
4317 (initialisation, etc) from functionality dealing with implementations
4318 of specific crypto iterfaces. This change also introduces integrated
4319 support for symmetric ciphers and digest implementations - so ENGINEs
4320 can now accelerate these by providing EVP_CIPHER and EVP_MD
4321 implementations of their own. This is detailed in crypto/engine/README
4322 as it couldn't be adequately described here. However, there are a few
4323 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4324 were changed in the original introduction of ENGINE code have now
4325 reverted back - the hooking from this code to ENGINE is now a good
4326 deal more passive and at run-time, operations deal directly with
4327 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4328 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4329 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4330 they were not being used by the framework as there is no concept of a
4331 BIGNUM_METHOD and they could not be generalised to the new
4332 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4333 ENGINE_cpy() has been removed as it cannot be consistently defined in
4337 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4340 *) Change mkdef.pl to sort symbols that get the same entry number,
4341 and make sure the automatically generated functions ERR_load_*
4342 become part of libeay.num as well.
4345 *) New function SSL_renegotiate_pending(). This returns true once
4346 renegotiation has been requested (either SSL_renegotiate() call
4347 or HelloRequest/ClientHello receveived from the peer) and becomes
4348 false once a handshake has been completed.
4349 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4350 sends a HelloRequest, but does not ensure that a handshake takes
4351 place. SSL_renegotiate_pending() is useful for checking if the
4352 client has followed the request.)
4355 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4356 By default, clients may request session resumption even during
4357 renegotiation (if session ID contexts permit); with this option,
4358 session resumption is possible only in the first handshake.
4360 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4361 more bits available for options that should not be part of
4362 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4365 *) Add some demos for certificate and certificate request creation.
4368 *) Make maximum certificate chain size accepted from the peer application
4369 settable (SSL*_get/set_max_cert_list()), as proposed by
4370 "Douglas E. Engert" <deengert@anl.gov>.
4373 *) Add support for shared libraries for Unixware-7
4374 (Boyd Lynn Gerber <gerberb@zenez.com>).
4377 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4378 be done prior to destruction. Use this to unload error strings from
4379 ENGINEs that load their own error strings. NB: This adds two new API
4380 functions to "get" and "set" this destroy handler in an ENGINE.
4383 *) Alter all existing ENGINE implementations (except "openssl" and
4384 "openbsd") to dynamically instantiate their own error strings. This
4385 makes them more flexible to be built both as statically-linked ENGINEs
4386 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4387 Also, add stub code to each that makes building them as self-contained
4388 shared-libraries easier (see README.ENGINE).
4391 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4392 implementations into applications that are completely implemented in
4393 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4394 commands that can be used to configure what shared-library to load and
4395 to control aspects of the way it is handled. Also, made an update to
4396 the README.ENGINE file that brings its information up-to-date and
4397 provides some information and instructions on the "dynamic" ENGINE
4398 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4401 *) Make it possible to unload ranges of ERR strings with a new
4402 "ERR_unload_strings" function.
4405 *) Add a copy() function to EVP_MD.
4408 *) Make EVP_MD routines take a context pointer instead of just the
4409 md_data void pointer.
4412 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4413 that the digest can only process a single chunk of data
4414 (typically because it is provided by a piece of
4415 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
projects / openssl.git / blob