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 *) The format used for MDC2 RSA signatures is inconsistent between EVP
271 and the RSA_sign/RSA_verify functions. This was made more apparent when
272 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
273 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
274 the correct format in RSA_verify so both forms transparently work.
277 *) Some servers which support TLS 1.0 can choke if we initially indicate
278 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
279 encrypted premaster secret. As a workaround use the maximum pemitted
280 client version in client hello, this should keep such servers happy
281 and still work with previous versions of OpenSSL.
284 *) Add support for TLS/DTLS heartbeats.
285 [Robin Seggelmann <seggelmann@fh-muenster.de>]
287 *) Add support for SCTP.
288 [Robin Seggelmann <seggelmann@fh-muenster.de>]
290 *) Improved PRNG seeding for VOS.
291 [Paul Green <Paul.Green@stratus.com>]
293 *) Extensive assembler packs updates, most notably:
295 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
296 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
297 - x86_64: bit-sliced AES implementation;
298 - ARM: NEON support, contemporary platforms optimizations;
299 - s390x: z196 support;
300 - *: GHASH and GF(2^m) multiplication implementations;
304 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
305 (removal of unnecessary code)
306 [Peter Sylvester <peter.sylvester@edelweb.fr>]
308 *) Add TLS key material exporter from RFC 5705.
311 *) Add DTLS-SRTP negotiation from RFC 5764.
314 *) Add Next Protocol Negotiation,
315 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
316 disabled with a no-npn flag to config or Configure. Code donated
318 [Adam Langley <agl@google.com> and Ben Laurie]
320 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
321 NIST-P256, NIST-P521, with constant-time single point multiplication on
322 typical inputs. Compiler support for the nonstandard type __uint128_t is
323 required to use this (present in gcc 4.4 and later, for 64-bit builds).
324 Code made available under Apache License version 2.0.
326 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
327 line to include this in your build of OpenSSL, and run "make depend" (or
328 "make update"). This enables the following EC_METHODs:
330 EC_GFp_nistp224_method()
331 EC_GFp_nistp256_method()
332 EC_GFp_nistp521_method()
334 EC_GROUP_new_by_curve_name() will automatically use these (while
335 EC_GROUP_new_curve_GFp() currently prefers the more flexible
337 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
339 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
340 all platforms. Move ssize_t definition from e_os.h to the public
341 header file e_os2.h as it now appears in public header file cms.h
344 *) New -sigopt option to the ca, req and x509 utilities. Additional
345 signature parameters can be passed using this option and in
349 *) Add RSA PSS signing function. This will generate and set the
350 appropriate AlgorithmIdentifiers for PSS based on those in the
351 corresponding EVP_MD_CTX structure. No application support yet.
354 *) Support for companion algorithm specific ASN1 signing routines.
355 New function ASN1_item_sign_ctx() signs a pre-initialised
356 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
357 the appropriate parameters.
360 *) Add new algorithm specific ASN1 verification initialisation function
361 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
362 handling will be the same no matter what EVP_PKEY_METHOD is used.
363 Add a PSS handler to support verification of PSS signatures: checked
364 against a number of sample certificates.
367 *) Add signature printing for PSS. Add PSS OIDs.
368 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
370 *) Add algorithm specific signature printing. An individual ASN1 method
371 can now print out signatures instead of the standard hex dump.
373 More complex signatures (e.g. PSS) can print out more meaningful
374 information. Include DSA version that prints out the signature
378 *) Password based recipient info support for CMS library: implementing
382 *) Split password based encryption into PBES2 and PBKDF2 functions. This
383 neatly separates the code into cipher and PBE sections and is required
384 for some algorithms that split PBES2 into separate pieces (such as
388 *) Session-handling fixes:
389 - Fix handling of connections that are resuming with a session ID,
390 but also support Session Tickets.
391 - Fix a bug that suppressed issuing of a new ticket if the client
392 presented a ticket with an expired session.
393 - Try to set the ticket lifetime hint to something reasonable.
394 - Make tickets shorter by excluding irrelevant information.
395 - On the client side, don't ignore renewed tickets.
396 [Adam Langley, Bodo Moeller (Google)]
398 *) Fix PSK session representation.
401 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
403 This work was sponsored by Intel.
406 *) Add GCM support to TLS library. Some custom code is needed to split
407 the IV between the fixed (from PRF) and explicit (from TLS record)
408 portions. This adds all GCM ciphersuites supported by RFC5288 and
409 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
410 add a special AESGCM string for GCM only.
413 *) Expand range of ctrls for AES GCM. Permit setting invocation
414 field on decrypt and retrieval of invocation field only on encrypt.
417 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
418 As required by RFC5289 these ciphersuites cannot be used if for
419 versions of TLS earlier than 1.2.
422 *) For FIPS capable OpenSSL interpret a NULL default public key method
423 as unset and return the appopriate default but do *not* set the default.
424 This means we can return the appopriate method in applications that
425 swicth between FIPS and non-FIPS modes.
428 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
429 ENGINE is used then we cannot handle that in the FIPS module so we
430 keep original code iff non-FIPS operations are allowed.
433 *) Add -attime option to openssl utilities.
434 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
436 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
439 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
440 FIPS EC methods unconditionally for now.
443 *) New build option no-ec2m to disable characteristic 2 code.
446 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
447 all cases can be covered as some introduce binary incompatibilities.
450 *) Redirect RSA operations to FIPS module including keygen,
451 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
454 *) Add similar low level API blocking to ciphers.
457 *) Low level digest APIs are not approved in FIPS mode: any attempt
458 to use these will cause a fatal error. Applications that *really* want
459 to use them can use the private_* version instead.
462 *) Redirect cipher operations to FIPS module for FIPS builds.
465 *) Redirect digest operations to FIPS module for FIPS builds.
468 *) Update build system to add "fips" flag which will link in fipscanister.o
469 for static and shared library builds embedding a signature if needed.
472 *) Output TLS supported curves in preference order instead of numerical
473 order. This is currently hardcoded for the highest order curves first.
474 This should be configurable so applications can judge speed vs strength.
477 *) Add TLS v1.2 server support for client authentication.
480 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
484 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
485 FIPS modules versions.
488 *) Add TLS v1.2 client side support for client authentication. Keep cache
489 of handshake records longer as we don't know the hash algorithm to use
490 until after the certificate request message is received.
493 *) Initial TLS v1.2 client support. Add a default signature algorithms
494 extension including all the algorithms we support. Parse new signature
495 format in client key exchange. Relax some ECC signing restrictions for
496 TLS v1.2 as indicated in RFC5246.
499 *) Add server support for TLS v1.2 signature algorithms extension. Switch
500 to new signature format when needed using client digest preference.
501 All server ciphersuites should now work correctly in TLS v1.2. No client
502 support yet and no support for client certificates.
505 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
506 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
507 ciphersuites. At present only RSA key exchange ciphersuites work with
508 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
509 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
510 and version checking.
513 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
514 with this defined it will not be affected by any changes to ssl internal
515 structures. Add several utility functions to allow openssl application
516 to work with OPENSSL_NO_SSL_INTERN defined.
520 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
522 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
525 *) Permit abbreviated handshakes when renegotiating using the function
526 SSL_renegotiate_abbreviated().
527 [Robin Seggelmann <seggelmann@fh-muenster.de>]
529 *) Add call to ENGINE_register_all_complete() to
530 ENGINE_load_builtin_engines(), so some implementations get used
531 automatically instead of needing explicit application support.
534 *) Add support for TLS key exporter as described in RFC5705.
535 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
537 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
538 a few changes are required:
540 Add SSL_OP_NO_TLSv1_1 flag.
542 Update version checking logic to handle version 1.1.
543 Add explicit IV handling (ported from DTLS code).
544 Add command line options to s_client/s_server.
547 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
549 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
550 Thanks to Antonio Martin, Enterprise Secure Access Research and
551 Development, Cisco Systems, Inc. for discovering this bug and
552 preparing a fix. (CVE-2012-0050)
555 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
557 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
558 of the Vaudenay padding oracle attack on CBC mode encryption
559 which enables an efficient plaintext recovery attack against
560 the OpenSSL implementation of DTLS. Their attack exploits timing
561 differences arising during decryption processing. A research
562 paper describing this attack can be found at:
563 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
564 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
565 Security Group at Royal Holloway, University of London
566 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
567 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
568 for preparing the fix. (CVE-2011-4108)
569 [Robin Seggelmann, Michael Tuexen]
571 *) Clear bytes used for block padding of SSL 3.0 records.
573 [Adam Langley (Google)]
575 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
576 Kadianakis <desnacked@gmail.com> for discovering this issue and
577 Adam Langley for preparing the fix. (CVE-2011-4619)
578 [Adam Langley (Google)]
580 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
581 [Andrey Kulikov <amdeich@gmail.com>]
583 *) Prevent malformed RFC3779 data triggering an assertion failure.
584 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
585 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
586 [Rob Austein <sra@hactrn.net>]
588 *) Improved PRNG seeding for VOS.
589 [Paul Green <Paul.Green@stratus.com>]
591 *) Fix ssl_ciph.c set-up race.
592 [Adam Langley (Google)]
594 *) Fix spurious failures in ecdsatest.c.
595 [Emilia Käsper (Google)]
597 *) Fix the BIO_f_buffer() implementation (which was mixing different
598 interpretations of the '..._len' fields).
599 [Adam Langley (Google)]
601 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
602 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
603 threads won't reuse the same blinding coefficients.
605 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
606 lock to call BN_BLINDING_invert_ex, and avoids one use of
607 BN_BLINDING_update for each BN_BLINDING structure (previously,
608 the last update always remained unused).
609 [Emilia Käsper (Google)]
611 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
612 [Bob Buckholz (Google)]
614 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
616 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
617 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
618 [Kaspar Brand <ossl@velox.ch>]
620 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
621 for multi-threaded use of ECDH. (CVE-2011-3210)
622 [Adam Langley (Google)]
624 *) Fix x509_name_ex_d2i memory leak on bad inputs.
627 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
628 signature public key algorithm by using OID xref utilities instead.
629 Before this you could only use some ECC ciphersuites with SHA1 only.
632 *) Add protection against ECDSA timing attacks as mentioned in the paper
633 by Billy Bob Brumley and Nicola Tuveri, see:
635 http://eprint.iacr.org/2011/232.pdf
637 [Billy Bob Brumley and Nicola Tuveri]
639 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
641 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
642 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
644 *) Fix bug in string printing code: if *any* escaping is enabled we must
645 escape the escape character (backslash) or the resulting string is
649 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
651 *) Disable code workaround for ancient and obsolete Netscape browsers
652 and servers: an attacker can use it in a ciphersuite downgrade attack.
653 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
656 *) Fixed J-PAKE implementation error, originally discovered by
657 Sebastien Martini, further info and confirmation from Stefan
658 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
661 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
663 *) Fix extension code to avoid race conditions which can result in a buffer
664 overrun vulnerability: resumed sessions must not be modified as they can
665 be shared by multiple threads. CVE-2010-3864
668 *) Fix WIN32 build system to correctly link an ENGINE directory into
672 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
674 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
676 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
678 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
680 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
681 context. The operation can be customised via the ctrl mechanism in
682 case ENGINEs want to include additional functionality.
685 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
688 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
689 output hashes compatible with older versions of OpenSSL.
690 [Willy Weisz <weisz@vcpc.univie.ac.at>]
692 *) Fix compression algorithm handling: if resuming a session use the
693 compression algorithm of the resumed session instead of determining
694 it from client hello again. Don't allow server to change algorithm.
697 *) Add load_crls() function to apps tidying load_certs() too. Add option
698 to verify utility to allow additional CRLs to be included.
701 *) Update OCSP request code to permit adding custom headers to the request:
702 some responders need this.
705 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
707 [Julia Lawall <julia@diku.dk>]
709 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
710 needlessly dereferenced structures, used obsolete functions and
711 didn't handle all updated verify codes correctly.
714 *) Disable MD2 in the default configuration.
717 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
718 indicate the initial BIO being pushed or popped. This makes it possible
719 to determine whether the BIO is the one explicitly called or as a result
720 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
721 it handles reference counts correctly and doesn't zero out the I/O bio
722 when it is not being explicitly popped. WARNING: applications which
723 included workarounds for the old buggy behaviour will need to be modified
724 or they could free up already freed BIOs.
727 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
728 renaming to all platforms (within the 0.9.8 branch, this was
729 done conditionally on Netware platforms to avoid a name clash).
730 [Guenter <lists@gknw.net>]
732 *) Add ECDHE and PSK support to DTLS.
733 [Michael Tuexen <tuexen@fh-muenster.de>]
735 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
739 *) Add "missing" function EVP_MD_flags() (without this the only way to
740 retrieve a digest flags is by accessing the structure directly. Update
741 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
742 or cipher is registered as in the "from" argument. Print out all
743 registered digests in the dgst usage message instead of manually
744 attempting to work them out.
747 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
748 this allows the use of compression and extensions. Change default cipher
749 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
750 by default unless an application cipher string requests it.
753 *) Alter match criteria in PKCS12_parse(). It used to try to use local
754 key ids to find matching certificates and keys but some PKCS#12 files
755 don't follow the (somewhat unwritten) rules and this strategy fails.
756 Now just gather all certificates together and the first private key
757 then look for the first certificate that matches the key.
760 *) Support use of registered digest and cipher names for dgst and cipher
761 commands instead of having to add each one as a special case. So now
768 openssl dgst -sha256 foo
770 and this works for ENGINE based algorithms too.
774 *) Update Gost ENGINE to support parameter files.
775 [Victor B. Wagner <vitus@cryptocom.ru>]
777 *) Support GeneralizedTime in ca utility.
778 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
780 *) Enhance the hash format used for certificate directory links. The new
781 form uses the canonical encoding (meaning equivalent names will work
782 even if they aren't identical) and uses SHA1 instead of MD5. This form
783 is incompatible with the older format and as a result c_rehash should
784 be used to rebuild symbolic links.
787 *) Make PKCS#8 the default write format for private keys, replacing the
788 traditional format. This form is standardised, more secure and doesn't
789 include an implicit MD5 dependency.
792 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
793 committed to OpenSSL should pass this lot as a minimum.
796 *) Add session ticket override functionality for use by EAP-FAST.
797 [Jouni Malinen <j@w1.fi>]
799 *) Modify HMAC functions to return a value. Since these can be implemented
800 in an ENGINE errors can occur.
803 *) Type-checked OBJ_bsearch_ex.
806 *) Type-checked OBJ_bsearch. Also some constification necessitated
807 by type-checking. Still to come: TXT_DB, bsearch(?),
808 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
812 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
813 seconds to a tm structure directly, instead of going through OS
814 specific date routines. This avoids any issues with OS routines such
815 as the year 2038 bug. New *_adj() functions for ASN1 time structures
816 and X509_time_adj_ex() to cover the extended range. The existing
817 X509_time_adj() is still usable and will no longer have any date issues.
820 *) Delta CRL support. New use deltas option which will attempt to locate
821 and search any appropriate delta CRLs available.
823 This work was sponsored by Google.
826 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
827 code and add additional score elements. Validate alternate CRL paths
828 as part of the CRL checking and indicate a new error "CRL path validation
829 error" in this case. Applications wanting additional details can use
830 the verify callback and check the new "parent" field. If this is not
831 NULL CRL path validation is taking place. Existing applications wont
832 see this because it requires extended CRL support which is off by
835 This work was sponsored by Google.
838 *) Support for freshest CRL extension.
840 This work was sponsored by Google.
843 *) Initial indirect CRL support. Currently only supported in the CRLs
844 passed directly and not via lookup. Process certificate issuer
845 CRL entry extension and lookup CRL entries by bother issuer name
846 and serial number. Check and process CRL issuer entry in IDP extension.
848 This work was sponsored by Google.
851 *) Add support for distinct certificate and CRL paths. The CRL issuer
852 certificate is validated separately in this case. Only enabled if
853 an extended CRL support flag is set: this flag will enable additional
854 CRL functionality in future.
856 This work was sponsored by Google.
859 *) Add support for policy mappings extension.
861 This work was sponsored by Google.
864 *) Fixes to pathlength constraint, self issued certificate handling,
865 policy processing to align with RFC3280 and PKITS tests.
867 This work was sponsored by Google.
870 *) Support for name constraints certificate extension. DN, email, DNS
871 and URI types are currently supported.
873 This work was sponsored by Google.
876 *) To cater for systems that provide a pointer-based thread ID rather
877 than numeric, deprecate the current numeric thread ID mechanism and
878 replace it with a structure and associated callback type. This
879 mechanism allows a numeric "hash" to be extracted from a thread ID in
880 either case, and on platforms where pointers are larger than 'long',
881 mixing is done to help ensure the numeric 'hash' is usable even if it
882 can't be guaranteed unique. The default mechanism is to use "&errno"
883 as a pointer-based thread ID to distinguish between threads.
885 Applications that want to provide their own thread IDs should now use
886 CRYPTO_THREADID_set_callback() to register a callback that will call
887 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
889 Note that ERR_remove_state() is now deprecated, because it is tied
890 to the assumption that thread IDs are numeric. ERR_remove_state(0)
891 to free the current thread's error state should be replaced by
892 ERR_remove_thread_state(NULL).
894 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
895 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
896 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
897 application was previously providing a numeric thread callback that
898 was inappropriate for distinguishing threads, then uniqueness might
899 have been obtained with &errno that happened immediately in the
900 intermediate development versions of OpenSSL; this is no longer the
901 case, the numeric thread callback will now override the automatic use
903 [Geoff Thorpe, with help from Bodo Moeller]
905 *) Initial support for different CRL issuing certificates. This covers a
906 simple case where the self issued certificates in the chain exist and
907 the real CRL issuer is higher in the existing chain.
909 This work was sponsored by Google.
912 *) Removed effectively defunct crypto/store from the build.
915 *) Revamp of STACK to provide stronger type-checking. Still to come:
916 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
917 ASN1_STRING, CONF_VALUE.
920 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
921 RAM on SSL connections. This option can save about 34k per idle SSL.
924 *) Revamp of LHASH to provide stronger type-checking. Still to come:
925 STACK, TXT_DB, bsearch, qsort.
928 *) Initial support for Cryptographic Message Syntax (aka CMS) based
929 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
930 support for data, signedData, compressedData, digestedData and
931 encryptedData, envelopedData types included. Scripts to check against
932 RFC4134 examples draft and interop and consistency checks of many
933 content types and variants.
936 *) Add options to enc utility to support use of zlib compression BIO.
939 *) Extend mk1mf to support importing of options and assembly language
940 files from Configure script, currently only included in VC-WIN32.
941 The assembly language rules can now optionally generate the source
942 files from the associated perl scripts.
945 *) Implement remaining functionality needed to support GOST ciphersuites.
946 Interop testing has been performed using CryptoPro implementations.
947 [Victor B. Wagner <vitus@cryptocom.ru>]
949 *) s390x assembler pack.
952 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
956 *) Implement Opaque PRF Input TLS extension as specified in
957 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
958 official specification yet and no extension type assignment by
959 IANA exists, this extension (for now) will have to be explicitly
960 enabled when building OpenSSL by providing the extension number
961 to use. For example, specify an option
963 -DTLSEXT_TYPE_opaque_prf_input=0x9527
965 to the "config" or "Configure" script to enable the extension,
966 assuming extension number 0x9527 (which is a completely arbitrary
967 and unofficial assignment based on the MD5 hash of the Internet
968 Draft). Note that by doing so, you potentially lose
969 interoperability with other TLS implementations since these might
970 be using the same extension number for other purposes.
972 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
973 opaque PRF input value to use in the handshake. This will create
974 an interal copy of the length-'len' string at 'src', and will
975 return non-zero for success.
977 To get more control and flexibility, provide a callback function
980 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
981 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
985 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
988 Callback function 'cb' will be called in handshakes, and is
989 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
990 Argument 'arg' is for application purposes (the value as given to
991 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
992 be provided to the callback function). The callback function
993 has to return non-zero to report success: usually 1 to use opaque
994 PRF input just if possible, or 2 to enforce use of the opaque PRF
995 input. In the latter case, the library will abort the handshake
996 if opaque PRF input is not successfully negotiated.
998 Arguments 'peerinput' and 'len' given to the callback function
999 will always be NULL and 0 in the case of a client. A server will
1000 see the client's opaque PRF input through these variables if
1001 available (NULL and 0 otherwise). Note that if the server
1002 provides an opaque PRF input, the length must be the same as the
1003 length of the client's opaque PRF input.
1005 Note that the callback function will only be called when creating
1006 a new session (session resumption can resume whatever was
1007 previously negotiated), and will not be called in SSL 2.0
1008 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1009 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1010 for applications that need to enforce opaque PRF input.
1014 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1017 [Victor B. Wagner <vitus@cryptocom.ru>]
1019 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1020 RFC4507bis. The encrypted ticket format is an encrypted encoded
1021 SSL_SESSION structure, that way new session features are automatically
1024 If a client application caches session in an SSL_SESSION structure
1025 support is transparent because tickets are now stored in the encoded
1028 The SSL_CTX structure automatically generates keys for ticket
1029 protection in servers so again support should be possible
1030 with no application modification.
1032 If a client or server wishes to disable RFC4507 support then the option
1033 SSL_OP_NO_TICKET can be set.
1035 Add a TLS extension debugging callback to allow the contents of any client
1036 or server extensions to be examined.
1038 This work was sponsored by Google.
1041 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1042 OpenSSL should now compile cleanly on gcc 4.2
1043 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1045 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1046 support including streaming MAC support: this is required for GOST
1047 ciphersuite support.
1048 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1050 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1051 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1052 to output in BER and PEM format.
1055 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1056 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1057 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1058 ENGINE support for HMAC keys which are unextractable. New -mac and
1059 -macopt options to dgst utility.
1062 *) New option -sigopt to dgst utility. Update dgst to use
1063 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1064 alternative signing paramaters such as X9.31 or PSS in the dgst
1068 *) Change ssl_cipher_apply_rule(), the internal function that does
1069 the work each time a ciphersuite string requests enabling
1070 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1071 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1072 the order of disabled ciphersuites such that those ciphersuites
1073 that most recently went from enabled to disabled not only stay
1074 in order with respect to each other, but also have higher priority
1075 than other disabled ciphersuites the next time ciphersuites are
1078 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1079 the same ciphersuites as with "HIGH" alone, but in a specific
1080 order where the PSK ciphersuites come first (since they are the
1081 most recently disabled ciphersuites when "HIGH" is parsed).
1083 Also, change ssl_create_cipher_list() (using this new
1084 funcionality) such that between otherwise identical
1085 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1089 *) Change ssl_create_cipher_list() so that it automatically
1090 arranges the ciphersuites in reasonable order before starting
1091 to process the rule string. Thus, the definition for "DEFAULT"
1092 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1093 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1094 This makes it much easier to arrive at a reasonable default order
1095 in applications for which anonymous ciphers are OK (meaning
1096 that you can't actually use DEFAULT).
1097 [Bodo Moeller; suggested by Victor Duchovni]
1099 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1100 processing) into multiple integers instead of setting
1101 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1102 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1103 (These masks as well as the individual bit definitions are hidden
1104 away into the non-exported interface ssl/ssl_locl.h, so this
1105 change to the definition of the SSL_CIPHER structure shouldn't
1106 affect applications.) This give us more bits for each of these
1107 categories, so there is no longer a need to coagulate AES128 and
1108 AES256 into a single algorithm bit, and to coagulate Camellia128
1109 and Camellia256 into a single algorithm bit, which has led to all
1112 Thus, among other things, the kludge introduced in 0.9.7m and
1113 0.9.8e for masking out AES256 independently of AES128 or masking
1114 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1116 With the change, we also introduce new ciphersuite aliases that
1117 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1121 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1122 Use the leftmost N bytes of the signature input if the input is
1123 larger than the prime q (with N being the size in bytes of q).
1126 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1127 it yet and it is largely untested.
1130 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1133 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1134 some compilers (gcc 4.2 and later) reject their use. Safestack is
1135 reimplemented. Update ASN1 to avoid use of legacy functions.
1138 *) Win32/64 targets are linked with Winsock2.
1141 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1142 to external functions. This can be used to increase CRL handling
1143 efficiency especially when CRLs are very large by (for example) storing
1144 the CRL revoked certificates in a database.
1147 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1148 new CRLs added to a directory can be used. New command line option
1149 -verify_return_error to s_client and s_server. This causes real errors
1150 to be returned by the verify callback instead of carrying on no matter
1151 what. This reflects the way a "real world" verify callback would behave.
1154 *) GOST engine, supporting several GOST algorithms and public key formats.
1155 Kindly donated by Cryptocom.
1158 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1159 partitioned by DP are handled but no indirect CRL or reason partitioning
1160 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1161 selected via a scoring technique which handles IDP and AKID in CRLs.
1164 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1165 will ultimately be used for all verify operations: this will remove the
1166 X509_STORE dependency on certificate verification and allow alternative
1167 lookup methods. X509_STORE based implementations of these two callbacks.
1170 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1171 Modify get_crl() to find a valid (unexpired) CRL if possible.
1174 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1175 this would be called X509_CRL_cmp() but that name is already used by
1176 a function that just compares CRL issuer names. Cache several CRL
1177 extensions in X509_CRL structure and cache CRLDP in X509.
1180 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1181 this maps equivalent X509_NAME structures into a consistent structure.
1182 Name comparison can then be performed rapidly using memcmp().
1185 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1189 *) Allow digests to supply their own micalg string for S/MIME type using
1190 the ctrl EVP_MD_CTRL_MICALG.
1193 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1194 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1195 ctrl. It can then customise the structure before and/or after signing
1199 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1200 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1201 to free up any added signature OIDs.
1204 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1205 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1206 digest and cipher tables. New options added to openssl utility:
1207 list-message-digest-algorithms and list-cipher-algorithms.
1210 *) Change the array representation of binary polynomials: the list
1211 of degrees of non-zero coefficients is now terminated with -1.
1212 Previously it was terminated with 0, which was also part of the
1213 value; thus, the array representation was not applicable to
1214 polynomials where t^0 has coefficient zero. This change makes
1215 the array representation useful in a more general context.
1218 *) Various modifications and fixes to SSL/TLS cipher string
1219 handling. For ECC, the code now distinguishes between fixed ECDH
1220 with RSA certificates on the one hand and with ECDSA certificates
1221 on the other hand, since these are separate ciphersuites. The
1222 unused code for Fortezza ciphersuites has been removed.
1224 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1225 (not "ECDHE"). For consistency with the code for DH
1226 certificates, use of ECDH certificates is now considered ECDH
1227 authentication, not RSA or ECDSA authentication (the latter is
1228 merely the CA's signing algorithm and not actively used in the
1231 The temporary ciphersuite alias "ECCdraft" is no longer
1232 available, and ECC ciphersuites are no longer excluded from "ALL"
1233 and "DEFAULT". The following aliases now exist for RFC 4492
1234 ciphersuites, most of these by analogy with the DH case:
1236 kECDHr - ECDH cert, signed with RSA
1237 kECDHe - ECDH cert, signed with ECDSA
1238 kECDH - ECDH cert (signed with either RSA or ECDSA)
1239 kEECDH - ephemeral ECDH
1240 ECDH - ECDH cert or ephemeral ECDH
1246 AECDH - anonymous ECDH
1247 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1251 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1252 Use correct micalg parameters depending on digest(s) in signed message.
1255 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1256 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1259 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1260 an engine to register a method. Add ENGINE lookups for methods and
1261 functional reference processing.
1264 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1265 EVP_{Sign,Verify}* which allow an application to customise the signature
1269 *) New -resign option to smime utility. This adds one or more signers
1270 to an existing PKCS#7 signedData structure. Also -md option to use an
1271 alternative message digest algorithm for signing.
1274 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1275 create PKCS7 structures containing multiple signers. Update smime
1276 application to support multiple signers.
1279 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1283 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1284 Reorganize PBE internals to lookup from a static table using NIDs,
1285 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1286 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1287 PRF which will be automatically used with PBES2.
1290 *) Replace the algorithm specific calls to generate keys in "req" with the
1294 *) Update PKCS#7 enveloped data routines to use new API. This is now
1295 supported by any public key method supporting the encrypt operation. A
1296 ctrl is added to allow the public key algorithm to examine or modify
1297 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1301 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1302 a default digest type to use. In most cases this will be SHA1 but some
1303 algorithms (such as GOST) need to specify an alternative digest. The
1304 return value indicates how strong the prefernce is 1 means optional and
1305 2 is mandatory (that is it is the only supported type). Modify
1306 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1307 use the default md. Update openssl utilities to use the default digest
1308 type for signing if it is not explicitly indicated.
1311 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1312 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1313 signing method from the key type. This effectively removes the link
1314 between digests and public key types.
1317 *) Add an OID cross reference table and utility functions. Its purpose is to
1318 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1319 rsaEncryption. This will allow some of the algorithm specific hackery
1320 needed to use the correct OID to be removed.
1323 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1324 structures for PKCS7_sign(). They are now set up by the relevant public
1328 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1331 *) Add support for key derivation (agreement) in the API, DH method and
1335 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1336 public and private key formats. As a side effect these add additional
1337 command line functionality not previously available: DSA signatures can be
1338 generated and verified using pkeyutl and DH key support and generation in
1343 [Oliver Tappe <zooey@hirschkaefer.de>]
1345 *) New make target "install_html_docs" installs HTML renditions of the
1347 [Oliver Tappe <zooey@hirschkaefer.de>]
1349 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1350 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1351 support key and parameter generation and add initial key generation
1352 functionality for RSA.
1355 *) Add functions for main EVP_PKEY_method operations. The undocumented
1356 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1357 EVP_PKEY_{encrypt,decrypt}_old.
1360 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1361 key API, doesn't do much yet.
1364 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1365 public key algorithms. New option to openssl utility:
1366 "list-public-key-algorithms" to print out info.
1369 *) Implement the Supported Elliptic Curves Extension for
1370 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1373 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1374 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1377 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1378 utilities such as rsa, dsa, dsaparam etc except they process any key
1382 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1383 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1384 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1388 *) Initial support for pluggable public key ASN1.
1389 De-spaghettify the public key ASN1 handling. Move public and private
1390 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1391 algorithm specific handling to a single module within the relevant
1392 algorithm directory. Add functions to allow (near) opaque processing
1393 of public and private key structures.
1396 *) Implement the Supported Point Formats Extension for
1397 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1400 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1401 for the psk identity [hint] and the psk callback functions to the
1402 SSL_SESSION, SSL and SSL_CTX structure.
1405 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1409 SSL_CTX_use_psk_identity_hint
1410 SSL_get_psk_identity_hint
1411 SSL_get_psk_identity
1412 SSL_use_psk_identity_hint
1414 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1416 *) Add RFC 3161 compliant time stamp request creation, response generation
1417 and response verification functionality.
1418 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1420 *) Add initial support for TLS extensions, specifically for the server_name
1421 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1422 have new members for a host name. The SSL data structure has an
1423 additional member SSL_CTX *initial_ctx so that new sessions can be
1424 stored in that context to allow for session resumption, even after the
1425 SSL has been switched to a new SSL_CTX in reaction to a client's
1426 server_name extension.
1428 New functions (subject to change):
1430 SSL_get_servername()
1431 SSL_get_servername_type()
1434 New CTRL codes and macros (subject to change):
1436 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1437 - SSL_CTX_set_tlsext_servername_callback()
1438 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1439 - SSL_CTX_set_tlsext_servername_arg()
1440 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1442 openssl s_client has a new '-servername ...' option.
1444 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1445 '-key2 ...', '-servername_fatal' (subject to change). This allows
1446 testing the HostName extension for a specific single host name ('-cert'
1447 and '-key' remain fallbacks for handshakes without HostName
1448 negotiation). If the unrecogninzed_name alert has to be sent, this by
1449 default is a warning; it becomes fatal with the '-servername_fatal'
1452 [Peter Sylvester, Remy Allais, Christophe Renou]
1454 *) Whirlpool hash implementation is added.
1457 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1458 bn(64,32). Because of instruction set limitations it doesn't have
1459 any negative impact on performance. This was done mostly in order
1460 to make it possible to share assembler modules, such as bn_mul_mont
1461 implementations, between 32- and 64-bit builds without hassle.
1464 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1465 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1469 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1470 dedicated Montgomery multiplication procedure, is introduced.
1471 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1472 "64-bit" performance on certain 32-bit targets.
1475 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1476 in SSL structures. New SSL ctrl to set maximum send fragment size.
1477 Save memory by seeting the I/O buffer sizes dynamically instead of
1478 using the maximum available value.
1481 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1482 in addition to the text details.
1485 *) Very, very preliminary EXPERIMENTAL support for printing of general
1486 ASN1 structures. This currently produces rather ugly output and doesn't
1487 handle several customised structures at all.
1490 *) Integrated support for PVK file format and some related formats such
1491 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1492 these in the 'rsa' and 'dsa' utilities.
1495 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1498 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1499 place for the (very old) "NETSCAPE" format certificates which are now
1500 handled using new ASN1 code equivalents.
1503 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1504 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1505 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1508 *) Modify CRL distribution points extension code to print out previously
1509 unsupported fields. Enhance extension setting code to allow setting of
1513 *) Add print and set support for Issuing Distribution Point CRL extension.
1516 *) Change 'Configure' script to enable Camellia by default.
1519 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1521 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1522 Thanks to Antonio Martin, Enterprise Secure Access Research and
1523 Development, Cisco Systems, Inc. for discovering this bug and
1524 preparing a fix. (CVE-2012-0050)
1527 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1529 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1530 of the Vaudenay padding oracle attack on CBC mode encryption
1531 which enables an efficient plaintext recovery attack against
1532 the OpenSSL implementation of DTLS. Their attack exploits timing
1533 differences arising during decryption processing. A research
1534 paper describing this attack can be found at:
1535 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1536 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1537 Security Group at Royal Holloway, University of London
1538 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1539 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1540 for preparing the fix. (CVE-2011-4108)
1541 [Robin Seggelmann, Michael Tuexen]
1543 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1544 [Ben Laurie, Kasper <ekasper@google.com>]
1546 *) Clear bytes used for block padding of SSL 3.0 records.
1548 [Adam Langley (Google)]
1550 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1551 Kadianakis <desnacked@gmail.com> for discovering this issue and
1552 Adam Langley for preparing the fix. (CVE-2011-4619)
1553 [Adam Langley (Google)]
1555 *) Prevent malformed RFC3779 data triggering an assertion failure.
1556 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1557 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1558 [Rob Austein <sra@hactrn.net>]
1560 *) Fix ssl_ciph.c set-up race.
1561 [Adam Langley (Google)]
1563 *) Fix spurious failures in ecdsatest.c.
1564 [Emilia Käsper (Google)]
1566 *) Fix the BIO_f_buffer() implementation (which was mixing different
1567 interpretations of the '..._len' fields).
1568 [Adam Langley (Google)]
1570 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1571 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1572 threads won't reuse the same blinding coefficients.
1574 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1575 lock to call BN_BLINDING_invert_ex, and avoids one use of
1576 BN_BLINDING_update for each BN_BLINDING structure (previously,
1577 the last update always remained unused).
1578 [Emilia Käsper (Google)]
1580 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1581 for multi-threaded use of ECDH.
1582 [Adam Langley (Google)]
1584 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1587 *) Add protection against ECDSA timing attacks as mentioned in the paper
1588 by Billy Bob Brumley and Nicola Tuveri, see:
1590 http://eprint.iacr.org/2011/232.pdf
1592 [Billy Bob Brumley and Nicola Tuveri]
1594 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1596 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1597 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1599 *) Fix bug in string printing code: if *any* escaping is enabled we must
1600 escape the escape character (backslash) or the resulting string is
1604 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1606 *) Disable code workaround for ancient and obsolete Netscape browsers
1607 and servers: an attacker can use it in a ciphersuite downgrade attack.
1608 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1611 *) Fixed J-PAKE implementation error, originally discovered by
1612 Sebastien Martini, further info and confirmation from Stefan
1613 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1616 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1618 *) Fix extension code to avoid race conditions which can result in a buffer
1619 overrun vulnerability: resumed sessions must not be modified as they can
1620 be shared by multiple threads. CVE-2010-3864
1623 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1626 *) Don't reencode certificate when calculating signature: cache and use
1627 the original encoding instead. This makes signature verification of
1628 some broken encodings work correctly.
1631 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1632 is also one of the inputs.
1633 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1635 *) Don't repeatedly append PBE algorithms to table if they already exist.
1636 Sort table on each new add. This effectively makes the table read only
1637 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1641 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1643 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1646 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1647 access or freeing data twice (CVE-2010-0742)
1648 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1650 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1651 common in certificates and some applications which only call
1652 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1656 Reduce copying into .apps and .test in makevms.com
1657 Don't try to use blank CA certificate in CA.com
1658 Allow use of C files from original directories in maketests.com
1659 [Steven M. Schweda" <sms@antinode.info>]
1661 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1663 *) When rejecting SSL/TLS records due to an incorrect version number, never
1664 update s->server with a new major version number. As of
1665 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1666 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1667 the previous behavior could result in a read attempt at NULL when
1668 receiving specific incorrect SSL/TLS records once record payload
1669 protection is active. (CVE-2010-0740)
1670 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1672 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1673 could be crashed if the relevant tables were not present (e.g. chrooted).
1674 [Tomas Hoger <thoger@redhat.com>]
1676 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1678 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1679 [Martin Olsson, Neel Mehta]
1681 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1682 accommodate for stack sorting, always a write lock!).
1685 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1686 excessive delays in the RAND_poll(): over a minute. As a workaround
1687 include a time check in the inner Heap32Next loop too.
1690 *) The code that handled flushing of data in SSL/TLS originally used the
1691 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1692 the problem outlined in PR#1949. The fix suggested there however can
1693 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1694 of Apache). So instead simplify the code to flush unconditionally.
1695 This should be fine since flushing with no data to flush is a no op.
1698 *) Handle TLS versions 2.0 and later properly and correctly use the
1699 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1700 off ancient servers have a habit of sticking around for a while...
1703 *) Modify compression code so it frees up structures without using the
1704 ex_data callbacks. This works around a problem where some applications
1705 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1706 restarting) then use compression (e.g. SSL with compression) later.
1707 This results in significant per-connection memory leaks and
1708 has caused some security issues including CVE-2008-1678 and
1712 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1713 change when encrypting or decrypting.
1716 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1717 connect and renegotiate with servers which do not support RI.
1718 Until RI is more widely deployed this option is enabled by default.
1721 *) Add "missing" ssl ctrls to clear options and mode.
1724 *) If client attempts to renegotiate and doesn't support RI respond with
1725 a no_renegotiation alert as required by RFC5746. Some renegotiating
1726 TLS clients will continue a connection gracefully when they receive
1727 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1728 waiting for a server hello which it will never receive. Now we treat a
1729 received no_renegotiation alert as a fatal error. This is because
1730 applications requesting a renegotiation might well expect it to succeed
1731 and would have no code in place to handle the server denying it so the
1732 only safe thing to do is to terminate the connection.
1735 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1736 peer supports secure renegotiation and 0 otherwise. Print out peer
1737 renegotiation support in s_client/s_server.
1740 *) Replace the highly broken and deprecated SPKAC certification method with
1741 the updated NID creation version. This should correctly handle UTF8.
1744 *) Implement RFC5746. Re-enable renegotiation but require the extension
1745 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1746 turns out to be a bad idea. It has been replaced by
1747 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1748 SSL_CTX_set_options(). This is really not recommended unless you
1749 know what you are doing.
1750 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1752 *) Fixes to stateless session resumption handling. Use initial_ctx when
1753 issuing and attempting to decrypt tickets in case it has changed during
1754 servername handling. Use a non-zero length session ID when attempting
1755 stateless session resumption: this makes it possible to determine if
1756 a resumption has occurred immediately after receiving server hello
1757 (several places in OpenSSL subtly assume this) instead of later in
1761 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1762 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1763 fixes for a few places where the return code is not checked
1765 [Julia Lawall <julia@diku.dk>]
1767 *) Add --strict-warnings option to Configure script to include devteam
1768 warnings in other configurations.
1771 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1772 makes it possible to install openssl libraries in locations which
1773 have names other than "lib", for example "/usr/lib64" which some
1775 [Steve Henson, based on patch from Jeremy Utley]
1777 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1778 X690 8.9.12 and can produce some misleading textual output of OIDs.
1779 [Steve Henson, reported by Dan Kaminsky]
1781 *) Delete MD2 from algorithm tables. This follows the recommendation in
1782 several standards that it is not used in new applications due to
1783 several cryptographic weaknesses. For binary compatibility reasons
1784 the MD2 API is still compiled in by default.
1787 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1791 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1792 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1794 [Guenter <lists@gknw.net>]
1796 *) Fix the server certificate chain building code to use X509_verify_cert(),
1797 it used to have an ad-hoc builder which was unable to cope with anything
1798 other than a simple chain.
1799 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1801 *) Don't check self signed certificate signatures in X509_verify_cert()
1802 by default (a flag can override this): it just wastes time without
1803 adding any security. As a useful side effect self signed root CAs
1804 with non-FIPS digests are now usable in FIPS mode.
1807 *) In dtls1_process_out_of_seq_message() the check if the current message
1808 is already buffered was missing. For every new message was memory
1809 allocated, allowing an attacker to perform an denial of service attack
1810 with sending out of seq handshake messages until there is no memory
1811 left. Additionally every future messege was buffered, even if the
1812 sequence number made no sense and would be part of another handshake.
1813 So only messages with sequence numbers less than 10 in advance will be
1814 buffered. (CVE-2009-1378)
1815 [Robin Seggelmann, discovered by Daniel Mentz]
1817 *) Records are buffered if they arrive with a future epoch to be
1818 processed after finishing the corresponding handshake. There is
1819 currently no limitation to this buffer allowing an attacker to perform
1820 a DOS attack with sending records with future epochs until there is no
1821 memory left. This patch adds the pqueue_size() function to detemine
1822 the size of a buffer and limits the record buffer to 100 entries.
1824 [Robin Seggelmann, discovered by Daniel Mentz]
1826 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1827 parent structure is freed. (CVE-2009-1379)
1830 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1831 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1834 [Ilya O. <vrghost@gmail.com>]
1836 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1838 *) Disable renegotiation completely - this fixes a severe security
1839 problem (CVE-2009-3555) at the cost of breaking all
1840 renegotiation. Renegotiation can be re-enabled by setting
1841 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1842 run-time. This is really not recommended unless you know what
1846 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1848 *) Don't set val to NULL when freeing up structures, it is freed up by
1849 underlying code. If sizeof(void *) > sizeof(long) this can result in
1850 zeroing past the valid field. (CVE-2009-0789)
1851 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1853 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1854 checked correctly. This would allow some invalid signed attributes to
1855 appear to verify correctly. (CVE-2009-0591)
1856 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1858 *) Reject UniversalString and BMPString types with invalid lengths. This
1859 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1860 a legal length. (CVE-2009-0590)
1863 *) Set S/MIME signing as the default purpose rather than setting it
1864 unconditionally. This allows applications to override it at the store
1868 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1869 to handle some structures.
1872 *) Improve efficiency of mem_gets: don't search whole buffer each time
1874 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1876 *) New -hex option for openssl rand.
1879 *) Print out UTF8String and NumericString when parsing ASN1.
1882 *) Support NumericString type for name components.
1885 *) Allow CC in the environment to override the automatically chosen
1886 compiler. Note that nothing is done to ensure flags work with the
1890 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1892 *) Properly check EVP_VerifyFinal() and similar return values
1894 [Ben Laurie, Bodo Moeller, Google Security Team]
1896 *) Enable TLS extensions by default.
1899 *) Allow the CHIL engine to be loaded, whether the application is
1900 multithreaded or not. (This does not release the developer from the
1901 obligation to set up the dynamic locking callbacks.)
1902 [Sander Temme <sander@temme.net>]
1904 *) Use correct exit code if there is an error in dgst command.
1905 [Steve Henson; problem pointed out by Roland Dirlewanger]
1907 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1908 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1911 *) Add experimental JPAKE support, including demo authentication in
1912 s_client and s_server.
1915 *) Set the comparison function in v3_addr_canonize().
1916 [Rob Austein <sra@hactrn.net>]
1918 *) Add support for XMPP STARTTLS in s_client.
1919 [Philip Paeps <philip@freebsd.org>]
1921 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1922 to ensure that even with this option, only ciphersuites in the
1923 server's preference list will be accepted. (Note that the option
1924 applies only when resuming a session, so the earlier behavior was
1925 just about the algorithm choice for symmetric cryptography.)
1928 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1930 *) Fix NULL pointer dereference if a DTLS server received
1931 ChangeCipherSpec as first record (CVE-2009-1386).
1934 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1935 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1938 *) The fix in 0.9.8c that supposedly got rid of unsafe
1939 double-checked locking was incomplete for RSA blinding,
1940 addressing just one layer of what turns out to have been
1941 doubly unsafe triple-checked locking.
1943 So now fix this for real by retiring the MONT_HELPER macro
1944 in crypto/rsa/rsa_eay.c.
1946 [Bodo Moeller; problem pointed out by Marius Schilder]
1948 *) Various precautionary measures:
1950 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1952 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1953 (NB: This would require knowledge of the secret session ticket key
1954 to exploit, in which case you'd be SOL either way.)
1956 - Change bn_nist.c so that it will properly handle input BIGNUMs
1957 outside the expected range.
1959 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1962 [Neel Mehta, Bodo Moeller]
1964 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1965 the load fails. Useful for distros.
1966 [Ben Laurie and the FreeBSD team]
1968 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1971 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1974 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1976 This work was sponsored by Logica.
1979 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1980 keystores. Support for SSL/TLS client authentication too.
1981 Not compiled unless enable-capieng specified to Configure.
1983 This work was sponsored by Logica.
1986 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1987 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1988 attribute creation routines such as certifcate requests and PKCS#12
1992 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1994 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1995 handshake which could lead to a cilent crash as found using the
1996 Codenomicon TLS test suite (CVE-2008-1672)
1997 [Steve Henson, Mark Cox]
1999 *) Fix double free in TLS server name extensions which could lead to
2000 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2003 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2005 Clear the error queue to ensure that error entries left from
2006 older function calls do not interfere with the correct operation.
2007 [Lutz Jaenicke, Erik de Castro Lopo]
2009 *) Remove root CA certificates of commercial CAs:
2011 The OpenSSL project does not recommend any specific CA and does not
2012 have any policy with respect to including or excluding any CA.
2013 Therefore it does not make any sense to ship an arbitrary selection
2014 of root CA certificates with the OpenSSL software.
2017 *) RSA OAEP patches to fix two separate invalid memory reads.
2018 The first one involves inputs when 'lzero' is greater than
2019 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2020 before the beginning of from). The second one involves inputs where
2021 the 'db' section contains nothing but zeroes (there is a one-byte
2022 invalid read after the end of 'db').
2023 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2025 *) Partial backport from 0.9.9-dev:
2027 Introduce bn_mul_mont (dedicated Montgomery multiplication
2028 procedure) as a candidate for BIGNUM assembler implementation.
2029 While 0.9.9-dev uses assembler for various architectures, only
2030 x86_64 is available by default here in the 0.9.8 branch, and
2031 32-bit x86 is available through a compile-time setting.
2033 To try the 32-bit x86 assembler implementation, use Configure
2034 option "enable-montasm" (which exists only for this backport).
2036 As "enable-montasm" for 32-bit x86 disclaims code stability
2037 anyway, in this constellation we activate additional code
2038 backported from 0.9.9-dev for further performance improvements,
2039 namely BN_from_montgomery_word. (To enable this otherwise,
2040 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2042 [Andy Polyakov (backport partially by Bodo Moeller)]
2044 *) Add TLS session ticket callback. This allows an application to set
2045 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2046 values. This is useful for key rollover for example where several key
2047 sets may exist with different names.
2050 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2051 This was broken until now in 0.9.8 releases, such that the only way
2052 a registered ENGINE could be used (assuming it initialises
2053 successfully on the host) was to explicitly set it as the default
2054 for the relevant algorithms. This is in contradiction with 0.9.7
2055 behaviour and the documentation. With this fix, when an ENGINE is
2056 registered into a given algorithm's table of implementations, the
2057 'uptodate' flag is reset so that auto-discovery will be used next
2058 time a new context for that algorithm attempts to select an
2060 [Ian Lister (tweaked by Geoff Thorpe)]
2062 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2063 implemention in the following ways:
2065 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2068 Lack of BER streaming support means one pass streaming processing is
2069 only supported if data is detached: setting the streaming flag is
2070 ignored for embedded content.
2072 CMS support is disabled by default and must be explicitly enabled
2073 with the enable-cms configuration option.
2076 *) Update the GMP engine glue to do direct copies between BIGNUM and
2077 mpz_t when openssl and GMP use the same limb size. Otherwise the
2078 existing "conversion via a text string export" trick is still used.
2079 [Paul Sheer <paulsheer@gmail.com>]
2081 *) Zlib compression BIO. This is a filter BIO which compressed and
2082 uncompresses any data passed through it.
2085 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2086 RFC3394 compatible AES key wrapping.
2089 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2090 sets string data without copying. X509_ALGOR_set0() and
2091 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2092 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2093 from an X509_ATTRIBUTE structure optionally checking it occurs only
2094 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2098 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2099 to get the expected BN_FLG_CONSTTIME behavior.
2100 [Bodo Moeller (Google)]
2104 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2105 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2106 - added some more tests to do_tests.pl
2107 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2108 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2109 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2110 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2111 - various changes to netware.pl to enable gcc-cross builds on Win32
2113 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2114 - various changes to fix missing prototype warnings
2115 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2116 - added AES, WHIRLPOOL and CPUID assembler code to build files
2117 - added missing AES assembler make rules to mk1mf.pl
2118 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2119 [Guenter Knauf <eflash@gmx.net>]
2121 *) Implement certificate status request TLS extension defined in RFC3546.
2122 A client can set the appropriate parameters and receive the encoded
2123 OCSP response via a callback. A server can query the supplied parameters
2124 and set the encoded OCSP response in the callback. Add simplified examples
2125 to s_client and s_server.
2128 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2130 *) Fix various bugs:
2131 + Binary incompatibility of ssl_ctx_st structure
2132 + DTLS interoperation with non-compliant servers
2133 + Don't call get_session_cb() without proposed session
2134 + Fix ia64 assembler code
2135 [Andy Polyakov, Steve Henson]
2137 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2139 *) DTLS Handshake overhaul. There were longstanding issues with
2140 OpenSSL DTLS implementation, which were making it impossible for
2141 RFC 4347 compliant client to communicate with OpenSSL server.
2142 Unfortunately just fixing these incompatibilities would "cut off"
2143 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2144 server keeps tolerating non RFC compliant syntax. The opposite is
2145 not true, 0.9.8f client can not communicate with earlier server.
2146 This update even addresses CVE-2007-4995.
2149 *) Changes to avoid need for function casts in OpenSSL: some compilers
2150 (gcc 4.2 and later) reject their use.
2151 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2154 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2155 RFC4507bis. The encrypted ticket format is an encrypted encoded
2156 SSL_SESSION structure, that way new session features are automatically
2159 If a client application caches session in an SSL_SESSION structure
2160 support is transparent because tickets are now stored in the encoded
2163 The SSL_CTX structure automatically generates keys for ticket
2164 protection in servers so again support should be possible
2165 with no application modification.
2167 If a client or server wishes to disable RFC4507 support then the option
2168 SSL_OP_NO_TICKET can be set.
2170 Add a TLS extension debugging callback to allow the contents of any client
2171 or server extensions to be examined.
2173 This work was sponsored by Google.
2176 *) Add initial support for TLS extensions, specifically for the server_name
2177 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2178 have new members for a host name. The SSL data structure has an
2179 additional member SSL_CTX *initial_ctx so that new sessions can be
2180 stored in that context to allow for session resumption, even after the
2181 SSL has been switched to a new SSL_CTX in reaction to a client's
2182 server_name extension.
2184 New functions (subject to change):
2186 SSL_get_servername()
2187 SSL_get_servername_type()
2190 New CTRL codes and macros (subject to change):
2192 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2193 - SSL_CTX_set_tlsext_servername_callback()
2194 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2195 - SSL_CTX_set_tlsext_servername_arg()
2196 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2198 openssl s_client has a new '-servername ...' option.
2200 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2201 '-key2 ...', '-servername_fatal' (subject to change). This allows
2202 testing the HostName extension for a specific single host name ('-cert'
2203 and '-key' remain fallbacks for handshakes without HostName
2204 negotiation). If the unrecogninzed_name alert has to be sent, this by
2205 default is a warning; it becomes fatal with the '-servername_fatal'
2208 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2210 *) Add AES and SSE2 assembly language support to VC++ build.
2213 *) Mitigate attack on final subtraction in Montgomery reduction.
2216 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2217 (which previously caused an internal error).
2220 *) Squeeze another 10% out of IGE mode when in != out.
2223 *) AES IGE mode speedup.
2224 [Dean Gaudet (Google)]
2226 *) Add the Korean symmetric 128-bit cipher SEED (see
2227 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2228 add SEED ciphersuites from RFC 4162:
2230 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2231 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2232 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2233 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2235 To minimize changes between patchlevels in the OpenSSL 0.9.8
2236 series, SEED remains excluded from compilation unless OpenSSL
2237 is configured with 'enable-seed'.
2238 [KISA, Bodo Moeller]
2240 *) Mitigate branch prediction attacks, which can be practical if a
2241 single processor is shared, allowing a spy process to extract
2242 information. For detailed background information, see
2243 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2244 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2245 and Necessary Software Countermeasures"). The core of the change
2246 are new versions BN_div_no_branch() and
2247 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2248 respectively, which are slower, but avoid the security-relevant
2249 conditional branches. These are automatically called by BN_div()
2250 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2251 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2252 remove a conditional branch.
2254 BN_FLG_CONSTTIME is the new name for the previous
2255 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2256 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2257 in the exponent causes BN_mod_exp_mont() to use the alternative
2258 implementation in BN_mod_exp_mont_consttime().) The old name
2259 remains as a deprecated alias.
2261 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2262 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2263 constant-time implementations for more than just exponentiation.
2264 Here too the old name is kept as a deprecated alias.
2266 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2267 the BN_BLINDING structure gets an independent copy of the
2268 modulus. This means that the previous "BIGNUM *m" argument to
2269 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2270 essentially becomes "const BIGNUM *m", although we can't actually
2271 change this in the header file before 0.9.9. It allows
2272 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2273 enable BN_FLG_CONSTTIME.
2275 [Matthew D Wood (Intel Corp)]
2277 *) In the SSL/TLS server implementation, be strict about session ID
2278 context matching (which matters if an application uses a single
2279 external cache for different purposes). Previously,
2280 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2281 set. This did ensure strict client verification, but meant that,
2282 with applications using a single external cache for quite
2283 different requirements, clients could circumvent ciphersuite
2284 restrictions for a given session ID context by starting a session
2285 in a different context.
2288 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2289 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2290 authentication-only ciphersuites.
2293 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2294 not complete and could lead to a possible single byte overflow
2295 (CVE-2007-5135) [Ben Laurie]
2297 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2299 *) Since AES128 and AES256 (and similarly Camellia128 and
2300 Camellia256) share a single mask bit in the logic of
2301 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2302 kludge to work properly if AES128 is available and AES256 isn't
2303 (or if Camellia128 is available and Camellia256 isn't).
2306 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2307 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2308 When a point or a seed is encoded in a BIT STRING, we need to
2309 prevent the removal of trailing zero bits to get the proper DER
2310 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2311 of a NamedBitList, for which trailing 0 bits need to be removed.)
2314 *) Have SSL/TLS server implementation tolerate "mismatched" record
2315 protocol version while receiving ClientHello even if the
2316 ClientHello is fragmented. (The server can't insist on the
2317 particular protocol version it has chosen before the ServerHello
2318 message has informed the client about his choice.)
2321 *) Add RFC 3779 support.
2322 [Rob Austein for ARIN, Ben Laurie]
2324 *) Load error codes if they are not already present instead of using a
2325 static variable. This allows them to be cleanly unloaded and reloaded.
2326 Improve header file function name parsing.
2329 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2330 or CAPABILITY handshake as required by RFCs.
2333 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2335 *) Introduce limits to prevent malicious keys being able to
2336 cause a denial of service. (CVE-2006-2940)
2337 [Steve Henson, Bodo Moeller]
2339 *) Fix ASN.1 parsing of certain invalid structures that can result
2340 in a denial of service. (CVE-2006-2937) [Steve Henson]
2342 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2343 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2345 *) Fix SSL client code which could crash if connecting to a
2346 malicious SSLv2 server. (CVE-2006-4343)
2347 [Tavis Ormandy and Will Drewry, Google Security Team]
2349 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2350 match only those. Before that, "AES256-SHA" would be interpreted
2351 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2352 the same strength classification in 0.9.7h) as we currently only
2353 have a single AES bit in the ciphersuite description bitmap.
2354 That change, however, also applied to ciphersuite strings such as
2355 "RC4-MD5" that intentionally matched multiple ciphersuites --
2356 namely, SSL 2.0 ciphersuites in addition to the more common ones
2357 from SSL 3.0/TLS 1.0.
2359 So we change the selection algorithm again: Naming an explicit
2360 ciphersuite selects this one ciphersuite, and any other similar
2361 ciphersuite (same bitmap) from *other* protocol versions.
2362 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2363 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2365 Since SSL 2.0 does not have any ciphersuites for which the
2366 128/256 bit distinction would be relevant, this works for now.
2367 The proper fix will be to use different bits for AES128 and
2368 AES256, which would have avoided the problems from the beginning;
2369 however, bits are scarce, so we can only do this in a new release
2370 (not just a patchlevel) when we can change the SSL_CIPHER
2371 definition to split the single 'unsigned long mask' bitmap into
2372 multiple values to extend the available space.
2376 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2378 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2379 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2381 *) Add AES IGE and biIGE modes.
2384 *) Change the Unix randomness entropy gathering to use poll() when
2385 possible instead of select(), since the latter has some
2386 undesirable limitations.
2387 [Darryl Miles via Richard Levitte and Bodo Moeller]
2389 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2390 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2391 cannot be implicitly activated as part of, e.g., the "AES" alias.
2392 However, please upgrade to OpenSSL 0.9.9[-dev] for
2393 non-experimental use of the ECC ciphersuites to get TLS extension
2394 support, which is required for curve and point format negotiation
2395 to avoid potential handshake problems.
2398 *) Disable rogue ciphersuites:
2400 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2401 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2402 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2404 The latter two were purportedly from
2405 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2408 Also deactivate the remaining ciphersuites from
2409 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2410 unofficial, and the ID has long expired.
2413 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2414 dual-core machines) and other potential thread-safety issues.
2417 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2418 versions), which is now available for royalty-free use
2419 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2420 Also, add Camellia TLS ciphersuites from RFC 4132.
2422 To minimize changes between patchlevels in the OpenSSL 0.9.8
2423 series, Camellia remains excluded from compilation unless OpenSSL
2424 is configured with 'enable-camellia'.
2427 *) Disable the padding bug check when compression is in use. The padding
2428 bug check assumes the first packet is of even length, this is not
2429 necessarily true if compresssion is enabled and can result in false
2430 positives causing handshake failure. The actual bug test is ancient
2431 code so it is hoped that implementations will either have fixed it by
2432 now or any which still have the bug do not support compression.
2435 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2437 *) When applying a cipher rule check to see if string match is an explicit
2438 cipher suite and only match that one cipher suite if it is.
2441 *) Link in manifests for VC++ if needed.
2442 [Austin Ziegler <halostatue@gmail.com>]
2444 *) Update support for ECC-based TLS ciphersuites according to
2445 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2446 TLS extensions, which are supported starting with the 0.9.9
2447 branch, not in the OpenSSL 0.9.8 branch).
2450 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2451 opaque EVP_CIPHER_CTX handling.
2454 *) Fixes and enhancements to zlib compression code. We now only use
2455 "zlib1.dll" and use the default __cdecl calling convention on Win32
2456 to conform with the standards mentioned here:
2457 http://www.zlib.net/DLL_FAQ.txt
2458 Static zlib linking now works on Windows and the new --with-zlib-include
2459 --with-zlib-lib options to Configure can be used to supply the location
2460 of the headers and library. Gracefully handle case where zlib library
2464 *) Several fixes and enhancements to the OID generation code. The old code
2465 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2466 handle numbers larger than ULONG_MAX, truncated printing and had a
2467 non standard OBJ_obj2txt() behaviour.
2470 *) Add support for building of engines under engine/ as shared libraries
2471 under VC++ build system.
2474 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2475 Hopefully, we will not see any false combination of paths any more.
2478 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2480 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2481 (part of SSL_OP_ALL). This option used to disable the
2482 countermeasure against man-in-the-middle protocol-version
2483 rollback in the SSL 2.0 server implementation, which is a bad
2484 idea. (CVE-2005-2969)
2486 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2487 for Information Security, National Institute of Advanced Industrial
2488 Science and Technology [AIST], Japan)]
2490 *) Add two function to clear and return the verify parameter flags.
2493 *) Keep cipherlists sorted in the source instead of sorting them at
2494 runtime, thus removing the need for a lock.
2497 *) Avoid some small subgroup attacks in Diffie-Hellman.
2498 [Nick Mathewson and Ben Laurie]
2500 *) Add functions for well-known primes.
2503 *) Extended Windows CE support.
2504 [Satoshi Nakamura and Andy Polyakov]
2506 *) Initialize SSL_METHOD structures at compile time instead of during
2507 runtime, thus removing the need for a lock.
2510 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2511 attempting to decrypt each encrypted key in turn. Add support to
2515 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2517 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2520 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2523 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2524 key into the same file any more.
2527 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2530 *) Add -utf8 command line and config file option to 'ca'.
2531 [Stefan <stf@udoma.org]
2533 *) Removed the macro des_crypt(), as it seems to conflict with some
2534 libraries. Use DES_crypt().
2537 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2538 involves renaming the source and generated shared-libs for
2539 both. The engines will accept the corrected or legacy ids
2540 ('ncipher' and '4758_cca' respectively) when binding. NB,
2541 this only applies when building 'shared'.
2542 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2544 *) Add attribute functions to EVP_PKEY structure. Modify
2545 PKCS12_create() to recognize a CSP name attribute and
2546 use it. Make -CSP option work again in pkcs12 utility.
2549 *) Add new functionality to the bn blinding code:
2550 - automatic re-creation of the BN_BLINDING parameters after
2551 a fixed number of uses (currently 32)
2552 - add new function for parameter creation
2553 - introduce flags to control the update behaviour of the
2554 BN_BLINDING parameters
2555 - hide BN_BLINDING structure
2556 Add a second BN_BLINDING slot to the RSA structure to improve
2557 performance when a single RSA object is shared among several
2561 *) Add support for DTLS.
2562 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2564 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2565 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2568 *) Remove buggy and incompletet DH cert support from
2569 ssl/ssl_rsa.c and ssl/s3_both.c
2572 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2573 the apps/openssl applications.
2576 *) Compile clean with "-Wall -Wmissing-prototypes
2577 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2578 DEBUG_SAFESTACK must also be set.
2581 *) Change ./Configure so that certain algorithms can be disabled by default.
2582 The new counterpiece to "no-xxx" is "enable-xxx".
2584 The patented RC5 and MDC2 algorithms will now be disabled unless
2585 "enable-rc5" and "enable-mdc2", respectively, are specified.
2587 (IDEA remains enabled despite being patented. This is because IDEA
2588 is frequently required for interoperability, and there is no license
2589 fee for non-commercial use. As before, "no-idea" can be used to
2590 avoid this algorithm.)
2594 *) Add processing of proxy certificates (see RFC 3820). This work was
2595 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2596 EGEE (Enabling Grids for E-science in Europe).
2599 *) RC4 performance overhaul on modern architectures/implementations, such
2600 as Intel P4, IA-64 and AMD64.
2603 *) New utility extract-section.pl. This can be used specify an alternative
2604 section number in a pod file instead of having to treat each file as
2605 a separate case in Makefile. This can be done by adding two lines to the
2608 =for comment openssl_section:XXX
2610 The blank line is mandatory.
2614 *) New arguments -certform, -keyform and -pass for s_client and s_server
2615 to allow alternative format key and certificate files and passphrase
2619 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2620 update associated structures and add various utility functions.
2622 Add new policy related verify parameters, include policy checking in
2623 standard verify code. Enhance 'smime' application with extra parameters
2624 to support policy checking and print out.
2627 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2628 Nehemiah processors. These extensions support AES encryption in hardware
2629 as well as RNG (though RNG support is currently disabled).
2630 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2632 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2635 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2636 [Andy Polyakov and a number of other people]
2638 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2639 implementation contributed by IBM.
2640 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2642 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2643 exponent rather than 'unsigned long'. There is a corresponding change to
2644 the new 'rsa_keygen' element of the RSA_METHOD structure.
2645 [Jelte Jansen, Geoff Thorpe]
2647 *) Functionality for creating the initial serial number file is now
2648 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2650 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2651 number file to 1, which is bound to cause problems. To avoid
2652 the problems while respecting compatibility between different 0.9.7
2653 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2654 CA.pl for serial number initialization. With the new release 0.9.8,
2655 we can fix the problem directly in the 'ca' utility.)
2658 *) Reduced header interdepencies by declaring more opaque objects in
2659 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2660 give fewer recursive includes, which could break lazy source code - so
2661 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2662 developers should define this symbol when building and using openssl to
2663 ensure they track the recommended behaviour, interfaces, [etc], but
2664 backwards-compatible behaviour prevails when this isn't defined.
2667 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2670 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2671 This will generate a random key of the appropriate length based on the
2672 cipher context. The EVP_CIPHER can provide its own random key generation
2673 routine to support keys of a specific form. This is used in the des and
2674 3des routines to generate a key of the correct parity. Update S/MIME
2675 code to use new functions and hence generate correct parity DES keys.
2676 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2677 valid (weak or incorrect parity).
2680 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2681 as looking them up. This is useful when the verified structure may contain
2682 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2683 present unless the new PKCS7_NO_CRL flag is asserted.
2686 *) Extend ASN1 oid configuration module. It now additionally accepts the
2689 shortName = some long name, 1.2.3.4
2692 *) Reimplemented the BN_CTX implementation. There is now no more static
2693 limitation on the number of variables it can handle nor the depth of the
2694 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2695 information can now expand as required, and rather than having a single
2696 static array of bignums, BN_CTX now uses a linked-list of such arrays
2697 allowing it to expand on demand whilst maintaining the usefulness of
2698 BN_CTX's "bundling".
2701 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2702 to allow all RSA operations to function using a single BN_CTX.
2705 *) Preliminary support for certificate policy evaluation and checking. This
2706 is initially intended to pass the tests outlined in "Conformance Testing
2707 of Relying Party Client Certificate Path Processing Logic" v1.07.
2710 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2711 remained unused and not that useful. A variety of other little bignum
2712 tweaks and fixes have also been made continuing on from the audit (see
2716 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2717 associated ASN1, EVP and SSL functions and old ASN1 macros.
2720 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2721 and this should never fail. So the return value from the use of
2722 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2723 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2726 *) BN_CTX_get() should return zero-valued bignums, providing the same
2727 initialised value as BN_new().
2728 [Geoff Thorpe, suggested by Ulf Möller]
2730 *) Support for inhibitAnyPolicy certificate extension.
2733 *) An audit of the BIGNUM code is underway, for which debugging code is
2734 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2735 is considered valid when processing BIGNUMs, and causes execution to
2736 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2737 further steps are taken to deliberately pollute unused data in BIGNUM
2738 structures to try and expose faulty code further on. For now, openssl will
2739 (in its default mode of operation) continue to tolerate the inconsistent
2740 forms that it has tolerated in the past, but authors and packagers should
2741 consider trying openssl and their own applications when compiled with
2742 these debugging symbols defined. It will help highlight potential bugs in
2743 their own code, and will improve the test coverage for OpenSSL itself. At
2744 some point, these tighter rules will become openssl's default to improve
2745 maintainability, though the assert()s and other overheads will remain only
2746 in debugging configurations. See bn.h for more details.
2747 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2749 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2750 that can only be obtained through BN_CTX_new() (which implicitly
2751 initialises it). The presence of this function only made it possible
2752 to overwrite an existing structure (and cause memory leaks).
2755 *) Because of the callback-based approach for implementing LHASH as a
2756 template type, lh_insert() adds opaque objects to hash-tables and
2757 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2758 to clean up those corresponding objects before destroying the hash table
2759 (and losing the object pointers). So some over-zealous constifications in
2760 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2761 objects as "const" and the lh_doall[_arg] callback wrappers are not
2762 prototyped to have "const" restrictions on the object pointers they are
2763 given (and so aren't required to cast them away any more).
2766 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2767 (speed) prefers to use its own implementation. The two implementations
2768 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2769 its object type properly exposed (MS_TM) instead of casting to/from "char
2770 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2771 aren't necessarily the greatest nomenclatures - but this is what was used
2772 internally to the implementation so I've used that for now.
2775 *) Ensure that deprecated functions do not get compiled when
2776 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2777 the self-tests were still using deprecated key-generation functions so
2778 these have been updated also.
2781 *) Reorganise PKCS#7 code to separate the digest location functionality
2782 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2783 New function PKCS7_set_digest() to set the digest type for PKCS#7
2784 digestedData type. Add additional code to correctly generate the
2785 digestedData type and add support for this type in PKCS7 initialization
2789 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2790 structure of type "other".
2793 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2794 sure the loop does correctly stop and breaking ("division by zero")
2795 modulus operations are not performed. The (pre-generated) prime
2796 table crypto/bn/bn_prime.h was already correct, but it could not be
2797 re-generated on some platforms because of the "division by zero"
2798 situation in the script.
2799 [Ralf S. Engelschall]
2801 *) Update support for ECC-based TLS ciphersuites according to
2802 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2803 SHA-1 now is only used for "small" curves (where the
2804 representation of a field element takes up to 24 bytes); for
2805 larger curves, the field element resulting from ECDH is directly
2806 used as premaster secret.
2807 [Douglas Stebila (Sun Microsystems Laboratories)]
2809 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2810 curve secp160r1 to the tests.
2811 [Douglas Stebila (Sun Microsystems Laboratories)]
2813 *) Add the possibility to load symbols globally with DSO.
2814 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2816 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2817 control of the error stack.
2820 *) Add support for STORE in ENGINE.
2823 *) Add the STORE type. The intention is to provide a common interface
2824 to certificate and key stores, be they simple file-based stores, or
2825 HSM-type store, or LDAP stores, or...
2826 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2829 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2830 pass a list of arguments to any function as well as provide a way
2831 for a function to pass data back to the caller.
2834 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2835 works like BUF_strdup() but can be used to duplicate a portion of
2836 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2840 *) Add the function sk_find_ex() which works like sk_find(), but will
2841 return an index to an element even if an exact match couldn't be
2842 found. The index is guaranteed to point at the element where the
2843 searched-for key would be inserted to preserve sorting order.
2846 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2847 takes an extra flags argument for optional functionality. Currently,
2848 the following flags are defined:
2850 OBJ_BSEARCH_VALUE_ON_NOMATCH
2851 This one gets OBJ_bsearch_ex() to return a pointer to the first
2852 element where the comparing function returns a negative or zero
2855 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2856 This one gets OBJ_bsearch_ex() to return a pointer to the first
2857 element where the comparing function returns zero. This is useful
2858 if there are more than one element where the comparing function
2862 *) Make it possible to create self-signed certificates with 'openssl ca'
2863 in such a way that the self-signed certificate becomes part of the
2864 CA database and uses the same mechanisms for serial number generation
2865 as all other certificate signing. The new flag '-selfsign' enables
2866 this functionality. Adapt CA.sh and CA.pl.in.
2869 *) Add functionality to check the public key of a certificate request
2870 against a given private. This is useful to check that a certificate
2871 request can be signed by that key (self-signing).
2874 *) Make it possible to have multiple active certificates with the same
2875 subject in the CA index file. This is done only if the keyword
2876 'unique_subject' is set to 'no' in the main CA section (default
2877 if 'CA_default') of the configuration file. The value is saved
2878 with the database itself in a separate index attribute file,
2879 named like the index file with '.attr' appended to the name.
2882 *) Generate muti valued AVAs using '+' notation in config files for
2886 *) Support for nameConstraints certificate extension.
2889 *) Support for policyConstraints certificate extension.
2892 *) Support for policyMappings certificate extension.
2895 *) Make sure the default DSA_METHOD implementation only uses its
2896 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2897 and change its own handlers to be NULL so as to remove unnecessary
2898 indirection. This lets alternative implementations fallback to the
2899 default implementation more easily.
2902 *) Support for directoryName in GeneralName related extensions
2906 *) Make it possible to link applications using Makefile.shared.
2907 Make that possible even when linking against static libraries!
2910 *) Support for single pass processing for S/MIME signing. This now
2911 means that S/MIME signing can be done from a pipe, in addition
2912 cleartext signing (multipart/signed type) is effectively streaming
2913 and the signed data does not need to be all held in memory.
2915 This is done with a new flag PKCS7_STREAM. When this flag is set
2916 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2917 is done after the data is output (and digests calculated) in
2918 SMIME_write_PKCS7().
2921 *) Add full support for -rpath/-R, both in shared libraries and
2922 applications, at least on the platforms where it's known how
2926 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2927 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2928 will now compute a table of multiples of the generator that
2929 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2930 faster (notably in the case of a single point multiplication,
2931 scalar * generator).
2932 [Nils Larsch, Bodo Moeller]
2934 *) IPv6 support for certificate extensions. The various extensions
2935 which use the IP:a.b.c.d can now take IPv6 addresses using the
2936 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2940 *) Added an ENGINE that implements RSA by performing private key
2941 exponentiations with the GMP library. The conversions to and from
2942 GMP's mpz_t format aren't optimised nor are any montgomery forms
2943 cached, and on x86 it appears OpenSSL's own performance has caught up.
2944 However there are likely to be other architectures where GMP could
2945 provide a boost. This ENGINE is not built in by default, but it can be
2946 specified at Configure time and should be accompanied by the necessary
2947 linker additions, eg;
2948 ./config -DOPENSSL_USE_GMP -lgmp
2951 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2952 testing availability of engines with "-t" - the old behaviour is
2953 produced by increasing the feature's verbosity with "-tt".
2956 *) ECDSA routines: under certain error conditions uninitialized BN objects
2957 could be freed. Solution: make sure initialization is performed early
2958 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2962 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2963 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2964 software implementations. For DSA and DH, parameter generation can
2965 also be overriden by providing the appropriate method callbacks.
2968 *) Change the "progress" mechanism used in key-generation and
2969 primality testing to functions that take a new BN_GENCB pointer in
2970 place of callback/argument pairs. The new API functions have "_ex"
2971 postfixes and the older functions are reimplemented as wrappers for
2972 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2973 declarations of the old functions to help (graceful) attempts to
2974 migrate to the new functions. Also, the new key-generation API
2975 functions operate on a caller-supplied key-structure and return
2976 success/failure rather than returning a key or NULL - this is to
2977 help make "keygen" another member function of RSA_METHOD etc.
2979 Example for using the new callback interface:
2981 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2985 BN_GENCB_set(&my_cb, my_callback, my_arg);
2987 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2988 /* For the meaning of a, b in calls to my_callback(), see the
2989 * documentation of the function that calls the callback.
2990 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2991 * my_callback should return 1 if it wants BN_is_prime_ex()
2992 * to continue, or 0 to stop.
2997 *) Change the ZLIB compression method to be stateful, and make it
2998 available to TLS with the number defined in
2999 draft-ietf-tls-compression-04.txt.
3002 *) Add the ASN.1 structures and functions for CertificatePair, which
3003 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3005 CertificatePair ::= SEQUENCE {
3006 forward [0] Certificate OPTIONAL,
3007 reverse [1] Certificate OPTIONAL,
3008 -- at least one of the pair shall be present -- }
3010 Also implement the PEM functions to read and write certificate
3011 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3013 This needed to be defined, mostly for the sake of the LDAP
3014 attribute crossCertificatePair, but may prove useful elsewhere as
3018 *) Make it possible to inhibit symlinking of shared libraries in
3019 Makefile.shared, for Cygwin's sake.
3022 *) Extend the BIGNUM API by creating a function
3023 void BN_set_negative(BIGNUM *a, int neg);
3024 and a macro that behave like
3025 int BN_is_negative(const BIGNUM *a);
3027 to avoid the need to access 'a->neg' directly in applications.
3030 *) Implement fast modular reduction for pseudo-Mersenne primes
3031 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3032 EC_GROUP_new_curve_GFp() will now automatically use this
3034 [Nils Larsch <nla@trustcenter.de>]
3036 *) Add new lock type (CRYPTO_LOCK_BN).
3039 *) Change the ENGINE framework to automatically load engines
3040 dynamically from specific directories unless they could be
3041 found to already be built in or loaded. Move all the
3042 current engines except for the cryptodev one to a new
3044 The engines in engines/ are built as shared libraries if
3045 the "shared" options was given to ./Configure or ./config.
3046 Otherwise, they are inserted in libcrypto.a.
3047 /usr/local/ssl/engines is the default directory for dynamic
3048 engines, but that can be overriden at configure time through
3049 the usual use of --prefix and/or --openssldir, and at run
3050 time with the environment variable OPENSSL_ENGINES.
3051 [Geoff Thorpe and Richard Levitte]
3053 *) Add Makefile.shared, a helper makefile to build shared
3054 libraries. Addapt Makefile.org.
3057 *) Add version info to Win32 DLLs.
3058 [Peter 'Luna' Runestig" <peter@runestig.com>]
3060 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3061 can be added using this API to created arbitrary PKCS#12
3062 files while avoiding the low level API.
3064 New options to PKCS12_create(), key or cert can be NULL and
3065 will then be omitted from the output file. The encryption
3066 algorithm NIDs can be set to -1 for no encryption, the mac
3067 iteration count can be set to 0 to omit the mac.
3069 Enhance pkcs12 utility by making the -nokeys and -nocerts
3070 options work when creating a PKCS#12 file. New option -nomac
3071 to omit the mac, NONE can be set for an encryption algorithm.
3072 New code is modified to use the enhanced PKCS12_create()
3073 instead of the low level API.
3076 *) Extend ASN1 encoder to support indefinite length constructed
3077 encoding. This can output sequences tags and octet strings in
3078 this form. Modify pk7_asn1.c to support indefinite length
3079 encoding. This is experimental and needs additional code to
3080 be useful, such as an ASN1 bio and some enhanced streaming
3083 Extend template encode functionality so that tagging is passed
3084 down to the template encoder.
3087 *) Let 'openssl req' fail if an argument to '-newkey' is not
3088 recognized instead of using RSA as a default.
3091 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3092 As these are not official, they are not included in "ALL";
3093 the "ECCdraft" ciphersuite group alias can be used to select them.
3094 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3096 *) Add ECDH engine support.
3097 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3099 *) Add ECDH in new directory crypto/ecdh/.
3100 [Douglas Stebila (Sun Microsystems Laboratories)]
3102 *) Let BN_rand_range() abort with an error after 100 iterations
3103 without success (which indicates a broken PRNG).
3106 *) Change BN_mod_sqrt() so that it verifies that the input value
3107 is really the square of the return value. (Previously,
3108 BN_mod_sqrt would show GIGO behaviour.)
3111 *) Add named elliptic curves over binary fields from X9.62, SECG,
3112 and WAP/WTLS; add OIDs that were still missing.
3114 [Sheueling Chang Shantz and Douglas Stebila
3115 (Sun Microsystems Laboratories)]
3117 *) Extend the EC library for elliptic curves over binary fields
3118 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3121 EC_GF2m_simple_method
3125 EC_GROUP_new_curve_GF2m
3126 EC_GROUP_set_curve_GF2m
3127 EC_GROUP_get_curve_GF2m
3128 EC_POINT_set_affine_coordinates_GF2m
3129 EC_POINT_get_affine_coordinates_GF2m
3130 EC_POINT_set_compressed_coordinates_GF2m
3132 Point compression for binary fields is disabled by default for
3133 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3136 As binary polynomials are represented as BIGNUMs, various members
3137 of the EC_GROUP and EC_POINT data structures can be shared
3138 between the implementations for prime fields and binary fields;
3139 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3140 are essentially identical to their ..._GFp counterparts.
3141 (For simplicity, the '..._GFp' prefix has been dropped from
3142 various internal method names.)
3144 An internal 'field_div' method (similar to 'field_mul' and
3145 'field_sqr') has been added; this is used only for binary fields.
3147 [Sheueling Chang Shantz and Douglas Stebila
3148 (Sun Microsystems Laboratories)]
3150 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3151 through methods ('mul', 'precompute_mult').
3153 The generic implementations (now internally called 'ec_wNAF_mul'
3154 and 'ec_wNAF_precomputed_mult') remain the default if these
3155 methods are undefined.
3157 [Sheueling Chang Shantz and Douglas Stebila
3158 (Sun Microsystems Laboratories)]
3160 *) New function EC_GROUP_get_degree, which is defined through
3161 EC_METHOD. For curves over prime fields, this returns the bit
3162 length of the modulus.
3164 [Sheueling Chang Shantz and Douglas Stebila
3165 (Sun Microsystems Laboratories)]
3167 *) New functions EC_GROUP_dup, EC_POINT_dup.
3168 (These simply call ..._new and ..._copy).
3170 [Sheueling Chang Shantz and Douglas Stebila
3171 (Sun Microsystems Laboratories)]
3173 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3174 Polynomials are represented as BIGNUMs (where the sign bit is not
3175 used) in the following functions [macros]:
3178 BN_GF2m_sub [= BN_GF2m_add]
3179 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3180 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3181 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3183 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3184 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3185 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3186 BN_GF2m_cmp [= BN_ucmp]
3188 (Note that only the 'mod' functions are actually for fields GF(2^m).
3189 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3191 For some functions, an the irreducible polynomial defining a
3192 field can be given as an 'unsigned int[]' with strictly
3193 decreasing elements giving the indices of those bits that are set;
3194 i.e., p[] represents the polynomial
3195 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3197 p[0] > p[1] > ... > p[k] = 0.
3198 This applies to the following functions:
3203 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3204 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3206 BN_GF2m_mod_sqrt_arr
3207 BN_GF2m_mod_solve_quad_arr
3211 Conversion can be performed by the following functions:
3216 bntest.c has additional tests for binary polynomial arithmetic.
3218 Two implementations for BN_GF2m_mod_div() are available.
3219 The default algorithm simply uses BN_GF2m_mod_inv() and
3220 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3221 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3222 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3224 [Sheueling Chang Shantz and Douglas Stebila
3225 (Sun Microsystems Laboratories)]
3227 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3228 functionality is disabled at compile-time.
3229 [Douglas Stebila <douglas.stebila@sun.com>]
3231 *) Change default behaviour of 'openssl asn1parse' so that more
3232 information is visible when viewing, e.g., a certificate:
3234 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3235 mode the content of non-printable OCTET STRINGs is output in a
3236 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3237 avoid the appearance of a printable string.
3238 [Nils Larsch <nla@trustcenter.de>]
3240 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3242 EC_GROUP_set_asn1_flag()
3243 EC_GROUP_get_asn1_flag()
3244 EC_GROUP_set_point_conversion_form()
3245 EC_GROUP_get_point_conversion_form()
3246 These control ASN1 encoding details:
3247 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3248 has been set to OPENSSL_EC_NAMED_CURVE.
3249 - Points are encoded in uncompressed form by default; options for
3250 asn1_for are as for point2oct, namely
3251 POINT_CONVERSION_COMPRESSED
3252 POINT_CONVERSION_UNCOMPRESSED
3253 POINT_CONVERSION_HYBRID
3255 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3258 EC_GROUP_get0_seed()
3259 EC_GROUP_get_seed_len()
3260 This is used only for ASN1 purposes (so far).
3261 [Nils Larsch <nla@trustcenter.de>]
3263 *) Add 'field_type' member to EC_METHOD, which holds the NID
3264 of the appropriate field type OID. The new function
3265 EC_METHOD_get_field_type() returns this value.
3266 [Nils Larsch <nla@trustcenter.de>]
3271 EC_POINT_point2hex()
3272 EC_POINT_hex2point()
3273 providing useful interfaces to EC_POINT_point2oct() and
3274 EC_POINT_oct2point().
3275 [Nils Larsch <nla@trustcenter.de>]
3277 *) Change internals of the EC library so that the functions
3278 EC_GROUP_set_generator()
3279 EC_GROUP_get_generator()
3280 EC_GROUP_get_order()
3281 EC_GROUP_get_cofactor()
3282 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3283 to methods, which would lead to unnecessary code duplication when
3284 adding different types of curves.
3285 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3287 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3288 arithmetic, and such that modified wNAFs are generated
3289 (which avoid length expansion in many cases).
3292 *) Add a function EC_GROUP_check_discriminant() (defined via
3293 EC_METHOD) that verifies that the curve discriminant is non-zero.
3295 Add a function EC_GROUP_check() that makes some sanity tests
3296 on a EC_GROUP, its generator and order. This includes
3297 EC_GROUP_check_discriminant().
3298 [Nils Larsch <nla@trustcenter.de>]
3300 *) Add ECDSA in new directory crypto/ecdsa/.
3302 Add applications 'openssl ecparam' and 'openssl ecdsa'
3303 (these are based on 'openssl dsaparam' and 'openssl dsa').
3305 ECDSA support is also included in various other files across the
3306 library. Most notably,
3307 - 'openssl req' now has a '-newkey ecdsa:file' option;
3308 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3309 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3310 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3311 them suitable for ECDSA where domain parameters must be
3312 extracted before the specific public key;
3313 - ECDSA engine support has been added.
3314 [Nils Larsch <nla@trustcenter.de>]
3316 *) Include some named elliptic curves, and add OIDs from X9.62,
3317 SECG, and WAP/WTLS. Each curve can be obtained from the new
3319 EC_GROUP_new_by_curve_name(),
3320 and the list of available named curves can be obtained with
3321 EC_get_builtin_curves().
3322 Also add a 'curve_name' member to EC_GROUP objects, which can be
3324 EC_GROUP_set_curve_name()
3325 EC_GROUP_get_curve_name()
3326 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3328 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3329 was actually never needed) and in BN_mul(). The removal in BN_mul()
3330 required a small change in bn_mul_part_recursive() and the addition
3331 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3332 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3333 bn_sub_words() and bn_add_words() except they take arrays with
3337 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3339 *) Cleanse PEM buffers before freeing them since they may contain
3341 [Benjamin Bennett <ben@psc.edu>]
3343 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3344 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3345 authentication-only ciphersuites.
3348 *) Since AES128 and AES256 share a single mask bit in the logic of
3349 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3350 kludge to work properly if AES128 is available and AES256 isn't.
3353 *) Expand security boundary to match 1.1.1 module.
3356 *) Remove redundant features: hash file source, editing of test vectors
3357 modify fipsld to use external fips_premain.c signature.
3360 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3361 run algorithm test programs.
3364 *) Make algorithm test programs more tolerant of whitespace.
3367 *) Have SSL/TLS server implementation tolerate "mismatched" record
3368 protocol version while receiving ClientHello even if the
3369 ClientHello is fragmented. (The server can't insist on the
3370 particular protocol version it has chosen before the ServerHello
3371 message has informed the client about his choice.)
3374 *) Load error codes if they are not already present instead of using a
3375 static variable. This allows them to be cleanly unloaded and reloaded.
3378 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3380 *) Introduce limits to prevent malicious keys being able to
3381 cause a denial of service. (CVE-2006-2940)
3382 [Steve Henson, Bodo Moeller]
3384 *) Fix ASN.1 parsing of certain invalid structures that can result
3385 in a denial of service. (CVE-2006-2937) [Steve Henson]
3387 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3388 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3390 *) Fix SSL client code which could crash if connecting to a
3391 malicious SSLv2 server. (CVE-2006-4343)
3392 [Tavis Ormandy and Will Drewry, Google Security Team]
3394 *) Change ciphersuite string processing so that an explicit
3395 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3396 will no longer include "AES128-SHA"), and any other similar
3397 ciphersuite (same bitmap) from *other* protocol versions (so that
3398 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3399 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3400 changes from 0.9.8b and 0.9.8d.
3403 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3405 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3406 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3408 *) Change the Unix randomness entropy gathering to use poll() when
3409 possible instead of select(), since the latter has some
3410 undesirable limitations.
3411 [Darryl Miles via Richard Levitte and Bodo Moeller]
3413 *) Disable rogue ciphersuites:
3415 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3416 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3417 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3419 The latter two were purportedly from
3420 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3423 Also deactive the remaining ciphersuites from
3424 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3425 unofficial, and the ID has long expired.
3428 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3429 dual-core machines) and other potential thread-safety issues.
3432 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3434 *) Adapt fipsld and the build system to link against the validated FIPS
3435 module in FIPS mode.
3438 *) Fixes for VC++ 2005 build under Windows.
3441 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3442 from a Windows bash shell such as MSYS. It is autodetected from the
3443 "config" script when run from a VC++ environment. Modify standard VC++
3444 build to use fipscanister.o from the GNU make build.
3447 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3449 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3450 The value now differs depending on if you build for FIPS or not.
3451 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3452 safely run with a non-FIPSed libcrypto, as it may crash because of
3453 the difference induced by this change.
3456 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3458 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3459 (part of SSL_OP_ALL). This option used to disable the
3460 countermeasure against man-in-the-middle protocol-version
3461 rollback in the SSL 2.0 server implementation, which is a bad
3462 idea. (CVE-2005-2969)
3464 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3465 for Information Security, National Institute of Advanced Industrial
3466 Science and Technology [AIST], Japan)]
3468 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3469 mainly for FIPS compliance and not fully integrated at this stage.
3472 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3473 the exponentiation using a fixed-length exponent. (Otherwise,
3474 the information leaked through timing could expose the secret key
3475 after many signatures; cf. Bleichenbacher's attack on DSA with
3479 *) Make a new fixed-window mod_exp implementation the default for
3480 RSA, DSA, and DH private-key operations so that the sequence of
3481 squares and multiplies and the memory access pattern are
3482 independent of the particular secret key. This will mitigate
3483 cache-timing and potential related attacks.
3485 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3486 and this is automatically used by BN_mod_exp_mont() if the new flag
3487 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3488 will use this BN flag for private exponents unless the flag
3489 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3490 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3492 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3494 *) Change the client implementation for SSLv23_method() and
3495 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3496 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3497 (Previously, the SSL 2.0 backwards compatible Client Hello
3498 message format would be used even with SSL_OP_NO_SSLv2.)
3501 *) Add support for smime-type MIME parameter in S/MIME messages which some
3505 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3506 a threadsafe manner. Modify rsa code to use new function and add calls
3507 to dsa and dh code (which had race conditions before).
3510 *) Include the fixed error library code in the C error file definitions
3511 instead of fixing them up at runtime. This keeps the error code
3512 structures constant.
3515 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3517 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3520 *) Fixes for newer kerberos headers. NB: the casts are needed because
3521 the 'length' field is signed on one version and unsigned on another
3522 with no (?) obvious way to tell the difference, without these VC++
3523 complains. Also the "definition" of FAR (blank) is no longer included
3524 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3525 some needed definitions.
3528 *) Undo Cygwin change.
3531 *) Added support for proxy certificates according to RFC 3820.
3532 Because they may be a security thread to unaware applications,
3533 they must be explicitely allowed in run-time. See
3534 docs/HOWTO/proxy_certificates.txt for further information.
3537 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3539 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3540 server and client random values. Previously
3541 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3542 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3544 This change has negligible security impact because:
3546 1. Server and client random values still have 24 bytes of pseudo random
3549 2. Server and client random values are sent in the clear in the initial
3552 3. The master secret is derived using the premaster secret (48 bytes in
3553 size for static RSA ciphersuites) as well as client server and random
3556 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3559 [Stephen Henson, reported by UK NISCC]
3561 *) Use Windows randomness collection on Cygwin.
3564 *) Fix hang in EGD/PRNGD query when communication socket is closed
3565 prematurely by EGD/PRNGD.
3566 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3568 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3571 *) Back-port of selected performance improvements from development
3572 branch, as well as improved support for PowerPC platforms.
3575 *) Add lots of checks for memory allocation failure, error codes to indicate
3576 failure and freeing up memory if a failure occurs.
3577 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3579 *) Add new -passin argument to dgst.
3582 *) Perform some character comparisons of different types in X509_NAME_cmp:
3583 this is needed for some certificates that reencode DNs into UTF8Strings
3584 (in violation of RFC3280) and can't or wont issue name rollover
3588 *) Make an explicit check during certificate validation to see that
3589 the CA setting in each certificate on the chain is correct. As a
3590 side effect always do the following basic checks on extensions,
3591 not just when there's an associated purpose to the check:
3593 - if there is an unhandled critical extension (unless the user
3594 has chosen to ignore this fault)
3595 - if the path length has been exceeded (if one is set at all)
3596 - that certain extensions fit the associated purpose (if one has
3600 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3602 *) Avoid a race condition when CRLs are checked in a multi threaded
3603 environment. This would happen due to the reordering of the revoked
3604 entries during signature checking and serial number lookup. Now the
3605 encoding is cached and the serial number sort performed under a lock.
3606 Add new STACK function sk_is_sorted().
3609 *) Add Delta CRL to the extension code.
3612 *) Various fixes to s3_pkt.c so alerts are sent properly.
3613 [David Holmes <d.holmes@f5.com>]
3615 *) Reduce the chances of duplicate issuer name and serial numbers (in
3616 violation of RFC3280) using the OpenSSL certificate creation utilities.
3617 This is done by creating a random 64 bit value for the initial serial
3618 number when a serial number file is created or when a self signed
3619 certificate is created using 'openssl req -x509'. The initial serial
3620 number file is created using 'openssl x509 -next_serial' in CA.pl
3621 rather than being initialized to 1.
3624 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3626 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3627 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3628 [Joe Orton, Steve Henson]
3630 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3632 [Joe Orton, Steve Henson]
3634 *) Make it possible to have multiple active certificates with the same
3635 subject in the CA index file. This is done only if the keyword
3636 'unique_subject' is set to 'no' in the main CA section (default
3637 if 'CA_default') of the configuration file. The value is saved
3638 with the database itself in a separate index attribute file,
3639 named like the index file with '.attr' appended to the name.
3642 *) X509 verify fixes. Disable broken certificate workarounds when
3643 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3644 keyUsage extension present. Don't accept CRLs with unhandled critical
3645 extensions: since verify currently doesn't process CRL extensions this
3646 rejects a CRL with *any* critical extensions. Add new verify error codes
3650 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3651 A clarification of RFC2560 will require the use of OCTET STRINGs and
3652 some implementations cannot handle the current raw format. Since OpenSSL
3653 copies and compares OCSP nonces as opaque blobs without any attempt at
3654 parsing them this should not create any compatibility issues.
3657 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3658 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3659 this HMAC (and other) operations are several times slower than OpenSSL
3663 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3664 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3666 *) Use the correct content when signing type "other".
3669 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3671 *) Fix various bugs revealed by running the NISCC test suite:
3673 Stop out of bounds reads in the ASN1 code when presented with
3674 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3676 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3678 If verify callback ignores invalid public key errors don't try to check
3679 certificate signature with the NULL public key.
3683 *) New -ignore_err option in ocsp application to stop the server
3684 exiting on the first error in a request.
3687 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3688 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3692 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3693 extra data after the compression methods not only for TLS 1.0
3694 but also for SSL 3.0 (as required by the specification).
3695 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3697 *) Change X509_certificate_type() to mark the key as exported/exportable
3698 when it's 512 *bits* long, not 512 bytes.
3701 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3702 blocks during encryption.
3705 *) Various fixes to base64 BIO and non blocking I/O. On write
3706 flushes were not handled properly if the BIO retried. On read
3707 data was not being buffered properly and had various logic bugs.
3708 This also affects blocking I/O when the data being decoded is a
3712 *) Various S/MIME bugfixes and compatibility changes:
3713 output correct application/pkcs7 MIME type if
3714 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3715 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3716 of files as .eml work). Correctly handle very long lines in MIME
3720 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3722 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3723 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3724 a protocol version number mismatch like a decryption error
3725 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3728 *) Turn on RSA blinding by default in the default implementation
3729 to avoid a timing attack. Applications that don't want it can call
3730 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3731 They would be ill-advised to do so in most cases.
3732 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3734 *) Change RSA blinding code so that it works when the PRNG is not
3735 seeded (in this case, the secret RSA exponent is abused as
3736 an unpredictable seed -- if it is not unpredictable, there
3737 is no point in blinding anyway). Make RSA blinding thread-safe
3738 by remembering the creator's thread ID in rsa->blinding and
3739 having all other threads use local one-time blinding factors
3740 (this requires more computation than sharing rsa->blinding, but
3741 avoids excessive locking; and if an RSA object is not shared
3742 between threads, blinding will still be very fast).
3745 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3746 ENGINE as defaults for all supported algorithms irrespective of
3747 the 'flags' parameter. 'flags' is now honoured, so applications
3748 should make sure they are passing it correctly.
3751 *) Target "mingw" now allows native Windows code to be generated in
3752 the Cygwin environment as well as with the MinGW compiler.
3755 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3757 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3758 via timing by performing a MAC computation even if incorrrect
3759 block cipher padding has been found. This is a countermeasure
3760 against active attacks where the attacker has to distinguish
3761 between bad padding and a MAC verification error. (CVE-2003-0078)
3763 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3764 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3765 Martin Vuagnoux (EPFL, Ilion)]
3767 *) Make the no-err option work as intended. The intention with no-err
3768 is not to have the whole error stack handling routines removed from
3769 libcrypto, it's only intended to remove all the function name and
3770 reason texts, thereby removing some of the footprint that may not
3771 be interesting if those errors aren't displayed anyway.
3773 NOTE: it's still possible for any application or module to have it's
3774 own set of error texts inserted. The routines are there, just not
3775 used by default when no-err is given.
3778 *) Add support for FreeBSD on IA64.
3779 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3781 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3782 Kerberos function mit_des_cbc_cksum(). Before this change,
3783 the value returned by DES_cbc_cksum() was like the one from
3784 mit_des_cbc_cksum(), except the bytes were swapped.
3785 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3787 *) Allow an application to disable the automatic SSL chain building.
3788 Before this a rather primitive chain build was always performed in
3789 ssl3_output_cert_chain(): an application had no way to send the
3790 correct chain if the automatic operation produced an incorrect result.
3792 Now the chain builder is disabled if either:
3794 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3796 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3798 The reasoning behind this is that an application would not want the
3799 auto chain building to take place if extra chain certificates are
3800 present and it might also want a means of sending no additional
3801 certificates (for example the chain has two certificates and the
3805 *) Add the possibility to build without the ENGINE framework.
3806 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3808 *) Under Win32 gmtime() can return NULL: check return value in
3809 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3812 *) DSA routines: under certain error conditions uninitialized BN objects
3813 could be freed. Solution: make sure initialization is performed early
3814 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3815 Nils Larsch <nla@trustcenter.de> via PR#459)
3818 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3819 checked on reconnect on the client side, therefore session resumption
3820 could still fail with a "ssl session id is different" error. This
3821 behaviour is masked when SSL_OP_ALL is used due to
3822 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3823 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3824 followup to PR #377.
3827 *) IA-32 assembler support enhancements: unified ELF targets, support
3828 for SCO/Caldera platforms, fix for Cygwin shared build.
3831 *) Add support for FreeBSD on sparc64. As a consequence, support for
3832 FreeBSD on non-x86 processors is separate from x86 processors on
3833 the config script, much like the NetBSD support.
3834 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3836 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3838 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3841 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3842 code (06) was taken as the first octet of the session ID and the last
3843 octet was ignored consequently. As a result SSLv2 client side session
3844 caching could not have worked due to the session ID mismatch between
3846 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3850 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3851 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3855 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3856 seems that in spite of existing for more than a year, many application
3857 author have done nothing to provide the necessary callbacks, which
3858 means that this particular engine will not work properly anywhere.
3859 This is a very unfortunate situation which forces us, in the name
3860 of usability, to give the hw_ncipher.c a static lock, which is part
3862 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3863 appear in 0.9.8 or later. We EXPECT application authors to have
3864 dealt properly with this when 0.9.8 is released (unless we actually
3865 make such changes in the libcrypto locking code that changes will
3866 have to be made anyway).
3869 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3870 octets have been read, EOF or an error occurs. Without this change
3871 some truncated ASN1 structures will not produce an error.
3874 *) Disable Heimdal support, since it hasn't been fully implemented.
3875 Still give the possibility to force the use of Heimdal, but with
3876 warnings and a request that patches get sent to openssl-dev.
3879 *) Add the VC-CE target, introduce the WINCE sysname, and add
3880 INSTALL.WCE and appropriate conditionals to make it build.
3881 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3883 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3884 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3885 edit numbers of the version.
3886 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3888 *) Introduce safe string copy and catenation functions
3889 (BUF_strlcpy() and BUF_strlcat()).
3890 [Ben Laurie (CHATS) and Richard Levitte]
3892 *) Avoid using fixed-size buffers for one-line DNs.
3893 [Ben Laurie (CHATS)]
3895 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3896 resizing buffers containing secrets, and use where appropriate.
3897 [Ben Laurie (CHATS)]
3899 *) Avoid using fixed size buffers for configuration file location.
3900 [Ben Laurie (CHATS)]
3902 *) Avoid filename truncation for various CA files.
3903 [Ben Laurie (CHATS)]
3905 *) Use sizeof in preference to magic numbers.
3906 [Ben Laurie (CHATS)]
3908 *) Avoid filename truncation in cert requests.
3909 [Ben Laurie (CHATS)]
3911 *) Add assertions to check for (supposedly impossible) buffer
3913 [Ben Laurie (CHATS)]
3915 *) Don't cache truncated DNS entries in the local cache (this could
3916 potentially lead to a spoofing attack).
3917 [Ben Laurie (CHATS)]
3919 *) Fix various buffers to be large enough for hex/decimal
3920 representations in a platform independent manner.
3921 [Ben Laurie (CHATS)]
3923 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3924 resizing buffers containing secrets, and use where appropriate.
3925 [Ben Laurie (CHATS)]
3927 *) Add BIO_indent() to avoid much slightly worrying code to do
3929 [Ben Laurie (CHATS)]
3931 *) Convert sprintf()/BIO_puts() to BIO_printf().
3932 [Ben Laurie (CHATS)]
3934 *) buffer_gets() could terminate with the buffer only half
3936 [Ben Laurie (CHATS)]
3938 *) Add assertions to prevent user-supplied crypto functions from
3939 overflowing internal buffers by having large block sizes, etc.
3940 [Ben Laurie (CHATS)]
3942 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3944 [Ben Laurie (CHATS)]
3946 *) Eliminate unused copy of key in RC4.
3947 [Ben Laurie (CHATS)]
3949 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3950 [Ben Laurie (CHATS)]
3952 *) Fix off-by-one error in EGD path.
3953 [Ben Laurie (CHATS)]
3955 *) If RANDFILE path is too long, ignore instead of truncating.
3956 [Ben Laurie (CHATS)]
3958 *) Eliminate unused and incorrectly sized X.509 structure
3960 [Ben Laurie (CHATS)]
3962 *) Eliminate unused and dangerous function knumber().
3963 [Ben Laurie (CHATS)]
3965 *) Eliminate unused and dangerous structure, KSSL_ERR.
3966 [Ben Laurie (CHATS)]
3968 *) Protect against overlong session ID context length in an encoded
3969 session object. Since these are local, this does not appear to be
3971 [Ben Laurie (CHATS)]
3973 *) Change from security patch (see 0.9.6e below) that did not affect
3974 the 0.9.6 release series:
3976 Remote buffer overflow in SSL3 protocol - an attacker could
3977 supply an oversized master key in Kerberos-enabled versions.
3979 [Ben Laurie (CHATS)]
3981 *) Change the SSL kerb5 codes to match RFC 2712.
3984 *) Make -nameopt work fully for req and add -reqopt switch.
3985 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3987 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3988 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3990 *) Make sure tests can be performed even if the corresponding algorithms
3991 have been removed entirely. This was also the last step to make
3992 OpenSSL compilable with DJGPP under all reasonable conditions.
3993 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3995 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3996 to allow version independent disabling of normally unselected ciphers,
3997 which may be activated as a side-effect of selecting a single cipher.
3999 (E.g., cipher list string "RSA" enables ciphersuites that are left
4000 out of "ALL" because they do not provide symmetric encryption.
4001 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4002 [Lutz Jaenicke, Bodo Moeller]
4004 *) Add appropriate support for separate platform-dependent build
4005 directories. The recommended way to make a platform-dependent
4006 build directory is the following (tested on Linux), maybe with
4009 # Place yourself outside of the OpenSSL source tree. In
4010 # this example, the environment variable OPENSSL_SOURCE
4011 # is assumed to contain the absolute OpenSSL source directory.
4012 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4013 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4014 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4015 mkdir -p `dirname $F`
4016 ln -s $OPENSSL_SOURCE/$F $F
4019 To be absolutely sure not to disturb the source tree, a "make clean"
4020 is a good thing. If it isn't successfull, don't worry about it,
4021 it probably means the source directory is very clean.
4024 *) Make sure any ENGINE control commands make local copies of string
4025 pointers passed to them whenever necessary. Otherwise it is possible
4026 the caller may have overwritten (or deallocated) the original string
4027 data when a later ENGINE operation tries to use the stored values.
4028 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4030 *) Improve diagnostics in file reading and command-line digests.
4031 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4033 *) Add AES modes CFB and OFB to the object database. Correct an
4034 error in AES-CFB decryption.
4037 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4038 allows existing EVP_CIPHER_CTX structures to be reused after
4039 calling EVP_*Final(). This behaviour is used by encryption
4040 BIOs and some applications. This has the side effect that
4041 applications must explicitly clean up cipher contexts with
4042 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4045 *) Check the values of dna and dnb in bn_mul_recursive before calling
4046 bn_mul_comba (a non zero value means the a or b arrays do not contain
4047 n2 elements) and fallback to bn_mul_normal if either is not zero.
4050 *) Fix escaping of non-ASCII characters when using the -subj option
4051 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4054 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4055 form for "surname", serialNumber has no short form.
4056 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4057 therefore remove "mail" short name for "internet 7".
4058 The OID for unique identifiers in X509 certificates is
4059 x500UniqueIdentifier, not uniqueIdentifier.
4060 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4063 *) Add an "init" command to the ENGINE config module and auto initialize
4064 ENGINEs. Without any "init" command the ENGINE will be initialized
4065 after all ctrl commands have been executed on it. If init=1 the
4066 ENGINE is initailized at that point (ctrls before that point are run
4067 on the uninitialized ENGINE and after on the initialized one). If
4068 init=0 then the ENGINE will not be iniatialized at all.
4071 *) Fix the 'app_verify_callback' interface so that the user-defined
4072 argument is actually passed to the callback: In the
4073 SSL_CTX_set_cert_verify_callback() prototype, the callback
4074 declaration has been changed from
4077 int (*cb)(X509_STORE_CTX *,void *);
4078 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4079 i=s->ctx->app_verify_callback(&ctx)
4080 has been changed into
4081 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4083 To update applications using SSL_CTX_set_cert_verify_callback(),
4084 a dummy argument can be added to their callback functions.
4085 [D. K. Smetters <smetters@parc.xerox.com>]
4087 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4088 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4090 *) Add and OPENSSL_LOAD_CONF define which will cause
4091 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4092 This allows older applications to transparently support certain
4093 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4094 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4095 load the config file and OPENSSL_add_all_algorithms_conf() which will
4096 always load it have also been added.
4099 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4100 Adjust NIDs and EVP layer.
4101 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4103 *) Config modules support in openssl utility.
4105 Most commands now load modules from the config file,
4106 though in a few (such as version) this isn't done
4107 because it couldn't be used for anything.
4109 In the case of ca and req the config file used is
4110 the same as the utility itself: that is the -config
4111 command line option can be used to specify an
4115 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4116 use "openssl_conf" if filename is NULL use default openssl config file.
4119 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4120 config section name. Add a new flag to tolerate a missing config file
4121 and move code to CONF_modules_load_file().
4124 *) Support for crypto accelerator cards from Accelerated Encryption
4125 Processing, www.aep.ie. (Use engine 'aep')
4126 The support was copied from 0.9.6c [engine] and adapted/corrected
4127 to work with the new engine framework.
4128 [AEP Inc. and Richard Levitte]
4130 *) Support for SureWare crypto accelerator cards from Baltimore
4131 Technologies. (Use engine 'sureware')
4132 The support was copied from 0.9.6c [engine] and adapted
4133 to work with the new engine framework.
4136 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4137 make the newer ENGINE framework commands for the CHIL engine work.
4138 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4140 *) Make it possible to produce shared libraries on ReliantUNIX.
4141 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4143 *) Add the configuration target debug-linux-ppro.
4144 Make 'openssl rsa' use the general key loading routines
4145 implemented in apps.c, and make those routines able to
4146 handle the key format FORMAT_NETSCAPE and the variant
4148 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4150 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4151 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4153 *) Add -keyform to rsautl, and document -engine.
4154 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4156 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4157 BIO_R_NO_SUCH_FILE error code rather than the generic
4158 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4161 *) Add new functions
4163 ERR_peek_last_error_line
4164 ERR_peek_last_error_line_data.
4165 These are similar to
4168 ERR_peek_error_line_data,
4169 but report on the latest error recorded rather than the first one
4170 still in the error queue.
4171 [Ben Laurie, Bodo Moeller]
4173 *) default_algorithms option in ENGINE config module. This allows things
4175 default_algorithms = ALL
4176 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4179 *) Prelminary ENGINE config module.
4182 *) New experimental application configuration code.
4185 *) Change the AES code to follow the same name structure as all other
4186 symmetric ciphers, and behave the same way. Move everything to
4187 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4188 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4190 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4191 [Ben Laurie and Theo de Raadt]
4193 *) Add option to output public keys in req command.
4194 [Massimiliano Pala madwolf@openca.org]
4196 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4197 (up to about 10% better than before for P-192 and P-224).
4200 *) New functions/macros
4202 SSL_CTX_set_msg_callback(ctx, cb)
4203 SSL_CTX_set_msg_callback_arg(ctx, arg)
4204 SSL_set_msg_callback(ssl, cb)
4205 SSL_set_msg_callback_arg(ssl, arg)
4207 to request calling a callback function
4209 void cb(int write_p, int version, int content_type,
4210 const void *buf, size_t len, SSL *ssl, void *arg)
4212 whenever a protocol message has been completely received
4213 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4214 protocol version according to which the SSL library interprets
4215 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4216 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4217 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4218 specification (change_cipher_spec(20), alert(21), handshake(22)).
4219 'buf' and 'len' point to the actual message, 'ssl' to the
4220 SSL object, and 'arg' is the application-defined value set by
4221 SSL[_CTX]_set_msg_callback_arg().
4223 'openssl s_client' and 'openssl s_server' have new '-msg' options
4224 to enable a callback that displays all protocol messages.
4227 *) Change the shared library support so shared libraries are built as
4228 soon as the corresponding static library is finished, and thereby get
4229 openssl and the test programs linked against the shared library.
4230 This still only happens when the keyword "shard" has been given to
4231 the configuration scripts.
4233 NOTE: shared library support is still an experimental thing, and
4234 backward binary compatibility is still not guaranteed.
4235 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4237 *) Add support for Subject Information Access extension.
4238 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4240 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4241 additional bytes when new memory had to be allocated, not just
4242 when reusing an existing buffer.
4245 *) New command line and configuration option 'utf8' for the req command.
4246 This allows field values to be specified as UTF8 strings.
4249 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4250 runs for the former and machine-readable output for the latter.
4253 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4254 of the e-mail address in the DN (i.e., it will go into a certificate
4255 extension only). The new configuration file option 'email_in_dn = no'
4256 has the same effect.
4257 [Massimiliano Pala madwolf@openca.org]
4259 *) Change all functions with names starting with des_ to be starting
4260 with DES_ instead. Add wrappers that are compatible with libdes,
4261 but are named _ossl_old_des_*. Finally, add macros that map the
4262 des_* symbols to the corresponding _ossl_old_des_* if libdes
4263 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4264 desired, the des_* symbols will be mapped to DES_*, with one
4267 Since we provide two compatibility mappings, the user needs to
4268 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4269 compatibility is desired. The default (i.e., when that macro
4270 isn't defined) is OpenSSL 0.9.6c compatibility.
4272 There are also macros that enable and disable the support of old
4273 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4274 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4275 are defined, the default will apply: to support the old des routines.
4277 In either case, one must include openssl/des.h to get the correct
4278 definitions. Do not try to just include openssl/des_old.h, that
4281 NOTE: This is a major break of an old API into a new one. Software
4282 authors are encouraged to switch to the DES_ style functions. Some
4283 time in the future, des_old.h and the libdes compatibility functions
4284 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4285 default), and then completely removed.
4288 *) Test for certificates which contain unsupported critical extensions.
4289 If such a certificate is found during a verify operation it is
4290 rejected by default: this behaviour can be overridden by either
4291 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4292 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4293 X509_supported_extension() has also been added which returns 1 if a
4294 particular extension is supported.
4297 *) Modify the behaviour of EVP cipher functions in similar way to digests
4298 to retain compatibility with existing code.
4301 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4302 compatibility with existing code. In particular the 'ctx' parameter does
4303 not have to be to be initialized before the call to EVP_DigestInit() and
4304 it is tidied up after a call to EVP_DigestFinal(). New function
4305 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4306 EVP_MD_CTX_copy() changed to not require the destination to be
4307 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4308 requires the destination to be valid.
4310 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4311 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4314 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4315 so that complete 'Handshake' protocol structures are kept in memory
4316 instead of overwriting 'msg_type' and 'length' with 'body' data.
4319 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4320 [Massimo Santin via Richard Levitte]
4322 *) Major restructuring to the underlying ENGINE code. This includes
4323 reduction of linker bloat, separation of pure "ENGINE" manipulation
4324 (initialisation, etc) from functionality dealing with implementations
4325 of specific crypto iterfaces. This change also introduces integrated
4326 support for symmetric ciphers and digest implementations - so ENGINEs
4327 can now accelerate these by providing EVP_CIPHER and EVP_MD
4328 implementations of their own. This is detailed in crypto/engine/README
4329 as it couldn't be adequately described here. However, there are a few
4330 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4331 were changed in the original introduction of ENGINE code have now
4332 reverted back - the hooking from this code to ENGINE is now a good
4333 deal more passive and at run-time, operations deal directly with
4334 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4335 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4336 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4337 they were not being used by the framework as there is no concept of a
4338 BIGNUM_METHOD and they could not be generalised to the new
4339 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4340 ENGINE_cpy() has been removed as it cannot be consistently defined in
4344 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4347 *) Change mkdef.pl to sort symbols that get the same entry number,
4348 and make sure the automatically generated functions ERR_load_*
4349 become part of libeay.num as well.
4352 *) New function SSL_renegotiate_pending(). This returns true once
4353 renegotiation has been requested (either SSL_renegotiate() call
4354 or HelloRequest/ClientHello receveived from the peer) and becomes
4355 false once a handshake has been completed.
4356 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4357 sends a HelloRequest, but does not ensure that a handshake takes
4358 place. SSL_renegotiate_pending() is useful for checking if the
4359 client has followed the request.)
4362 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4363 By default, clients may request session resumption even during
4364 renegotiation (if session ID contexts permit); with this option,
4365 session resumption is possible only in the first handshake.
4367 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4368 more bits available for options that should not be part of
4369 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4372 *) Add some demos for certificate and certificate request creation.
4375 *) Make maximum certificate chain size accepted from the peer application
4376 settable (SSL*_get/set_max_cert_list()), as proposed by
4377 "Douglas E. Engert" <deengert@anl.gov>.
4380 *) Add support for shared libraries for Unixware-7
4381 (Boyd Lynn Gerber <gerberb@zenez.com>).
4384 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4385 be done prior to destruction. Use this to unload error strings from
4386 ENGINEs that load their own error strings. NB: This adds two new API
4387 functions to "get" and "set" this destroy handler in an ENGINE.
4390 *) Alter all existing ENGINE implementations (except "openssl" and
4391 "openbsd") to dynamically instantiate their own error strings. This
4392 makes them more flexible to be built both as statically-linked ENGINEs
4393 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4394 Also, add stub code to each that makes building them as self-contained
4395 shared-libraries easier (see README.ENGINE).
4398 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4399 implementations into applications that are completely implemented in
4400 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4401 commands that can be used to configure what shared-library to load and
4402 to control aspects of the way it is handled. Also, made an update to
4403 the README.ENGINE file that brings its information up-to-date and
4404 provides some information and instructions on the "dynamic" ENGINE
4405 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4408 *) Make it possible to unload ranges of ERR strings with a new
4409 "ERR_unload_strings" function.
4412 *) Add a copy() function to EVP_MD.
4415 *) Make EVP_MD routines take a context pointer instead o
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