5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Support for automatic EC temporary key parameter selection. If enabled
8 the most preferred EC parameters are automatically used instead of
9 hardcoded fixed parameters. Now a server just has to call:
10 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
11 support ECDH and use the most appropriate parameters.
14 *) Enhance and tidy EC curve and point format TLS extension code. Use
15 static structures instead of allocation if default values are used.
16 New ctrls to set curves we wish to support and to retrieve shared curves.
17 Print out shared curves in s_server. New options to s_server and s_client
18 to set list of supported curves.
21 *) New ctrls to retrieve supported signature algorithms and
22 supported curve values as an array of NIDs. Extend openssl utility
23 to print out received values.
26 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
27 between NIDs and the more common NIST names such as "P-256". Enhance
28 ecparam utility and ECC method to recognise the NIST names for curves.
31 *) Enhance SSL/TLS certificate chain handling to support different
32 chains for each certificate instead of one chain in the parent SSL_CTX.
35 *) Support for fixed DH ciphersuite client authentication: where both
36 server and client use DH certificates with common parameters.
39 *) Support for fixed DH ciphersuites: those requiring DH server
43 *) Transparently support X9.42 DH parameters when calling
44 PEM_read_bio_DHparameters. This means existing applications can handle
45 the new parameter format automatically.
48 *) Initial experimental support for X9.42 DH parameter format: mainly
49 to support use of 'q' parameter for RFC5114 parameters.
52 *) Add DH parameters from RFC5114 including test data to dhtest.
55 *) Update fips_test_suite to support multiple command line options. New
56 test to induce all self test errors in sequence and check expected
60 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
61 sign or verify all in one operation.
64 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
65 test programs and fips_test_suite. Includes functionality to parse
66 the minimal script output of fipsalgest.pl directly.
69 *) Add authorisation parameter to FIPS_module_mode_set().
72 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
75 *) Use separate DRBG fields for internal and external flags. New function
76 FIPS_drbg_health_check() to perform on demand health checking. Add
77 generation tests to fips_test_suite with reduced health check interval to
78 demonstrate periodic health checking. Add "nodh" option to
79 fips_test_suite to skip very slow DH test.
82 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
86 *) More extensive health check for DRBG checking many more failure modes.
87 New function FIPS_selftest_drbg_all() to handle every possible DRBG
88 combination: call this in fips_test_suite.
91 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
92 and POST to handle Dual EC cases.
95 *) Add support for canonical generation of DSA parameter 'g'. See
98 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
99 POST to handle HMAC cases.
102 *) Add functions FIPS_module_version() and FIPS_module_version_text()
103 to return numberical and string versions of the FIPS module number.
106 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
107 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
108 outside the validated module in the FIPS capable OpenSSL.
111 *) Minor change to DRBG entropy callback semantics. In some cases
112 there is no mutiple of the block length between min_len and
113 max_len. Allow the callback to return more than max_len bytes
114 of entropy but discard any extra: it is the callback's responsibility
115 to ensure that the extra data discarded does not impact the
116 requested amount of entropy.
119 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
120 information in FIPS186-3, SP800-57 and SP800-131A.
123 *) CCM support via EVP. Interface is very similar to GCM case except we
124 must supply all data in one chunk (i.e. no update, final) and the
125 message length must be supplied if AAD is used. Add algorithm test
129 *) Initial version of POST overhaul. Add POST callback to allow the status
130 of POST to be monitored and/or failures induced. Modify fips_test_suite
131 to use callback. Always run all selftests even if one fails.
134 *) XTS support including algorithm test driver in the fips_gcmtest program.
135 Note: this does increase the maximum key length from 32 to 64 bytes but
136 there should be no binary compatibility issues as existing applications
137 will never use XTS mode.
140 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
141 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
142 performs algorithm blocking for unapproved PRNG types. Also do not
143 set PRNG type in FIPS_mode_set(): leave this to the application.
144 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
145 the standard OpenSSL PRNG: set additional data to a date time vector.
148 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
149 This shouldn't present any incompatibility problems because applications
150 shouldn't be using these directly and any that are will need to rethink
151 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
154 *) Extensive self tests and health checking required by SP800-90 DRBG.
155 Remove strength parameter from FIPS_drbg_instantiate and always
156 instantiate at maximum supported strength.
159 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
162 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
165 *) New function DH_compute_key_padded() to compute a DH key and pad with
166 leading zeroes if needed: this complies with SP800-56A et al.
169 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
170 anything, incomplete, subject to change and largely untested at present.
173 *) Modify fipscanisteronly build option to only build the necessary object
174 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
177 *) Add experimental option FIPSSYMS to give all symbols in
178 fipscanister.o and FIPS or fips prefix. This will avoid
179 conflicts with future versions of OpenSSL. Add perl script
180 util/fipsas.pl to preprocess assembly language source files
181 and rename any affected symbols.
184 *) Add selftest checks and algorithm block of non-fips algorithms in
185 FIPS mode. Remove DES2 from selftests.
188 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
189 return internal method without any ENGINE dependencies. Add new
190 tiny fips sign and verify functions.
193 *) New build option no-ec2m to disable characteristic 2 code.
196 *) New build option "fipscanisteronly". This only builds fipscanister.o
197 and (currently) associated fips utilities. Uses the file Makefile.fips
198 instead of Makefile.org as the prototype.
201 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
202 Update fips_gcmtest to use IV generator.
205 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
206 setting output buffer to NULL. The *Final function must be
207 called although it will not retrieve any additional data. The tag
208 can be set or retrieved with a ctrl. The IV length is by default 12
209 bytes (96 bits) but can be set to an alternative value. If the IV
210 length exceeds the maximum IV length (currently 16 bytes) it cannot be
214 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
215 underlying do_cipher function handles all cipher semantics itself
216 including padding and finalisation. This is useful if (for example)
217 an ENGINE cipher handles block padding itself. The behaviour of
218 do_cipher is subtly changed if this flag is set: the return value
219 is the number of characters written to the output buffer (zero is
220 no longer an error code) or a negative error code. Also if the
221 input buffer is NULL and length 0 finalisation should be performed.
224 *) If a candidate issuer certificate is already part of the constructed
225 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
228 *) Improve forward-security support: add functions
230 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
231 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
233 for use by SSL/TLS servers; the callback function will be called whenever a
234 new session is created, and gets to decide whether the session may be
235 cached to make it resumable (return 0) or not (return 1). (As by the
236 SSL/TLS protocol specifications, the session_id sent by the server will be
237 empty to indicate that the session is not resumable; also, the server will
238 not generate RFC 4507 (RFC 5077) session tickets.)
240 A simple reasonable callback implementation is to return is_forward_secure.
241 This parameter will be set to 1 or 0 depending on the ciphersuite selected
242 by the SSL/TLS server library, indicating whether it can provide forward
244 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
246 *) New function OPENSSL_gmtime_diff to find the difference in days
247 and seconds between two tm structures. This will be used to provide
248 additional functionality for ASN1_TIME.
251 *) Add -trusted_first option which attempts to find certificates in the
252 trusted store even if an untrusted chain is also supplied.
255 *) Initial experimental support for explicitly trusted non-root CAs.
256 OpenSSL still tries to build a complete chain to a root but if an
257 intermediate CA has a trust setting included that is used. The first
258 setting is used: whether to trust or reject.
261 *) New -verify_name option in command line utilities to set verification
265 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
266 Add CMAC pkey methods.
269 *) Experimental regnegotiation in s_server -www mode. If the client
270 browses /reneg connection is renegotiated. If /renegcert it is
271 renegotiated requesting a certificate.
274 *) Add an "external" session cache for debugging purposes to s_server. This
275 should help trace issues which normally are only apparent in deployed
276 multi-process servers.
279 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
280 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
281 BIO_set_cipher() and some obscure PEM functions were changed so they
282 can now return an error. The RAND changes required a change to the
283 RAND_METHOD structure.
286 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
287 a gcc attribute to warn if the result of a function is ignored. This
288 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
289 whose return value is often ignored.
292 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
294 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
295 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
296 in CRYPTO_realloc_clean.
298 Thanks to Tavis Ormandy, Google Security Team, for discovering this
299 issue and to Adam Langley <agl@chromium.org> for fixing it.
301 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
303 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
306 *) Workarounds for some broken servers that "hang" if a client hello
307 record length exceeds 255 bytes:
309 1. Do not use record version number > TLS 1.0 in initial client
310 hello: some (but not all) hanging servers will now work.
311 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
312 the number of ciphers sent in the client hello. This should be
313 set to an even number, such as 50, for example by passing:
314 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
315 Most broken servers should now work.
316 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
317 TLS 1.2 client support entirely.
319 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
322 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
324 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
325 STRING form instead of a DigestInfo.
328 *) The format used for MDC2 RSA signatures is inconsistent between EVP
329 and the RSA_sign/RSA_verify functions. This was made more apparent when
330 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
331 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
332 the correct format in RSA_verify so both forms transparently work.
335 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
336 STRING form instead of a DigestInfo.
339 *) Some servers which support TLS 1.0 can choke if we initially indicate
340 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
341 encrypted premaster secret. As a workaround use the maximum pemitted
342 client version in client hello, this should keep such servers happy
343 and still work with previous versions of OpenSSL.
346 *) Add support for TLS/DTLS heartbeats.
347 [Robin Seggelmann <seggelmann@fh-muenster.de>]
349 *) Add support for SCTP.
350 [Robin Seggelmann <seggelmann@fh-muenster.de>]
352 *) Improved PRNG seeding for VOS.
353 [Paul Green <Paul.Green@stratus.com>]
355 *) Extensive assembler packs updates, most notably:
357 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
358 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
359 - x86_64: bit-sliced AES implementation;
360 - ARM: NEON support, contemporary platforms optimizations;
361 - s390x: z196 support;
362 - *: GHASH and GF(2^m) multiplication implementations;
366 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
367 (removal of unnecessary code)
368 [Peter Sylvester <peter.sylvester@edelweb.fr>]
370 *) Add TLS key material exporter from RFC 5705.
373 *) Add DTLS-SRTP negotiation from RFC 5764.
376 *) Add Next Protocol Negotiation,
377 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
378 disabled with a no-npn flag to config or Configure. Code donated
380 [Adam Langley <agl@google.com> and Ben Laurie]
382 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
383 NIST-P256, NIST-P521, with constant-time single point multiplication on
384 typical inputs. Compiler support for the nonstandard type __uint128_t is
385 required to use this (present in gcc 4.4 and later, for 64-bit builds).
386 Code made available under Apache License version 2.0.
388 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
389 line to include this in your build of OpenSSL, and run "make depend" (or
390 "make update"). This enables the following EC_METHODs:
392 EC_GFp_nistp224_method()
393 EC_GFp_nistp256_method()
394 EC_GFp_nistp521_method()
396 EC_GROUP_new_by_curve_name() will automatically use these (while
397 EC_GROUP_new_curve_GFp() currently prefers the more flexible
399 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
401 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
402 all platforms. Move ssize_t definition from e_os.h to the public
403 header file e_os2.h as it now appears in public header file cms.h
406 *) New -sigopt option to the ca, req and x509 utilities. Additional
407 signature parameters can be passed using this option and in
411 *) Add RSA PSS signing function. This will generate and set the
412 appropriate AlgorithmIdentifiers for PSS based on those in the
413 corresponding EVP_MD_CTX structure. No application support yet.
416 *) Support for companion algorithm specific ASN1 signing routines.
417 New function ASN1_item_sign_ctx() signs a pre-initialised
418 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
419 the appropriate parameters.
422 *) Add new algorithm specific ASN1 verification initialisation function
423 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
424 handling will be the same no matter what EVP_PKEY_METHOD is used.
425 Add a PSS handler to support verification of PSS signatures: checked
426 against a number of sample certificates.
429 *) Add signature printing for PSS. Add PSS OIDs.
430 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
432 *) Add algorithm specific signature printing. An individual ASN1 method
433 can now print out signatures instead of the standard hex dump.
435 More complex signatures (e.g. PSS) can print out more meaningful
436 information. Include DSA version that prints out the signature
440 *) Password based recipient info support for CMS library: implementing
444 *) Split password based encryption into PBES2 and PBKDF2 functions. This
445 neatly separates the code into cipher and PBE sections and is required
446 for some algorithms that split PBES2 into separate pieces (such as
450 *) Session-handling fixes:
451 - Fix handling of connections that are resuming with a session ID,
452 but also support Session Tickets.
453 - Fix a bug that suppressed issuing of a new ticket if the client
454 presented a ticket with an expired session.
455 - Try to set the ticket lifetime hint to something reasonable.
456 - Make tickets shorter by excluding irrelevant information.
457 - On the client side, don't ignore renewed tickets.
458 [Adam Langley, Bodo Moeller (Google)]
460 *) Fix PSK session representation.
463 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
465 This work was sponsored by Intel.
468 *) Add GCM support to TLS library. Some custom code is needed to split
469 the IV between the fixed (from PRF) and explicit (from TLS record)
470 portions. This adds all GCM ciphersuites supported by RFC5288 and
471 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
472 add a special AESGCM string for GCM only.
475 *) Expand range of ctrls for AES GCM. Permit setting invocation
476 field on decrypt and retrieval of invocation field only on encrypt.
479 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
480 As required by RFC5289 these ciphersuites cannot be used if for
481 versions of TLS earlier than 1.2.
484 *) For FIPS capable OpenSSL interpret a NULL default public key method
485 as unset and return the appopriate default but do *not* set the default.
486 This means we can return the appopriate method in applications that
487 swicth between FIPS and non-FIPS modes.
490 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
491 ENGINE is used then we cannot handle that in the FIPS module so we
492 keep original code iff non-FIPS operations are allowed.
495 *) Add -attime option to openssl utilities.
496 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
498 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
501 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
502 FIPS EC methods unconditionally for now.
505 *) New build option no-ec2m to disable characteristic 2 code.
508 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
509 all cases can be covered as some introduce binary incompatibilities.
512 *) Redirect RSA operations to FIPS module including keygen,
513 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
516 *) Add similar low level API blocking to ciphers.
519 *) Low level digest APIs are not approved in FIPS mode: any attempt
520 to use these will cause a fatal error. Applications that *really* want
521 to use them can use the private_* version instead.
524 *) Redirect cipher operations to FIPS module for FIPS builds.
527 *) Redirect digest operations to FIPS module for FIPS builds.
530 *) Update build system to add "fips" flag which will link in fipscanister.o
531 for static and shared library builds embedding a signature if needed.
534 *) Output TLS supported curves in preference order instead of numerical
535 order. This is currently hardcoded for the highest order curves first.
536 This should be configurable so applications can judge speed vs strength.
539 *) Add TLS v1.2 server support for client authentication.
542 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
546 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
547 FIPS modules versions.
550 *) Add TLS v1.2 client side support for client authentication. Keep cache
551 of handshake records longer as we don't know the hash algorithm to use
552 until after the certificate request message is received.
555 *) Initial TLS v1.2 client support. Add a default signature algorithms
556 extension including all the algorithms we support. Parse new signature
557 format in client key exchange. Relax some ECC signing restrictions for
558 TLS v1.2 as indicated in RFC5246.
561 *) Add server support for TLS v1.2 signature algorithms extension. Switch
562 to new signature format when needed using client digest preference.
563 All server ciphersuites should now work correctly in TLS v1.2. No client
564 support yet and no support for client certificates.
567 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
568 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
569 ciphersuites. At present only RSA key exchange ciphersuites work with
570 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
571 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
572 and version checking.
575 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
576 with this defined it will not be affected by any changes to ssl internal
577 structures. Add several utility functions to allow openssl application
578 to work with OPENSSL_NO_SSL_INTERN defined.
582 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
584 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
587 *) Permit abbreviated handshakes when renegotiating using the function
588 SSL_renegotiate_abbreviated().
589 [Robin Seggelmann <seggelmann@fh-muenster.de>]
591 *) Add call to ENGINE_register_all_complete() to
592 ENGINE_load_builtin_engines(), so some implementations get used
593 automatically instead of needing explicit application support.
596 *) Add support for TLS key exporter as described in RFC5705.
597 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
599 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
600 a few changes are required:
602 Add SSL_OP_NO_TLSv1_1 flag.
604 Update version checking logic to handle version 1.1.
605 Add explicit IV handling (ported from DTLS code).
606 Add command line options to s_client/s_server.
609 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
611 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
612 in CMS and PKCS7 code. When RSA decryption fails use a random key for
613 content decryption and always return the same error. Note: this attack
614 needs on average 2^20 messages so it only affects automated senders. The
615 old behaviour can be reenabled in the CMS code by setting the
616 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
617 an MMA defence is not necessary.
618 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
619 this issue. (CVE-2012-0884)
622 *) Fix CVE-2011-4619: make sure we really are receiving a
623 client hello before rejecting multiple SGC restarts. Thanks to
624 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
627 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
629 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
630 Thanks to Antonio Martin, Enterprise Secure Access Research and
631 Development, Cisco Systems, Inc. for discovering this bug and
632 preparing a fix. (CVE-2012-0050)
635 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
637 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
638 of the Vaudenay padding oracle attack on CBC mode encryption
639 which enables an efficient plaintext recovery attack against
640 the OpenSSL implementation of DTLS. Their attack exploits timing
641 differences arising during decryption processing. A research
642 paper describing this attack can be found at:
643 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
644 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
645 Security Group at Royal Holloway, University of London
646 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
647 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
648 for preparing the fix. (CVE-2011-4108)
649 [Robin Seggelmann, Michael Tuexen]
651 *) Clear bytes used for block padding of SSL 3.0 records.
653 [Adam Langley (Google)]
655 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
656 Kadianakis <desnacked@gmail.com> for discovering this issue and
657 Adam Langley for preparing the fix. (CVE-2011-4619)
658 [Adam Langley (Google)]
660 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
661 [Andrey Kulikov <amdeich@gmail.com>]
663 *) Prevent malformed RFC3779 data triggering an assertion failure.
664 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
665 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
666 [Rob Austein <sra@hactrn.net>]
668 *) Improved PRNG seeding for VOS.
669 [Paul Green <Paul.Green@stratus.com>]
671 *) Fix ssl_ciph.c set-up race.
672 [Adam Langley (Google)]
674 *) Fix spurious failures in ecdsatest.c.
675 [Emilia Käsper (Google)]
677 *) Fix the BIO_f_buffer() implementation (which was mixing different
678 interpretations of the '..._len' fields).
679 [Adam Langley (Google)]
681 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
682 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
683 threads won't reuse the same blinding coefficients.
685 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
686 lock to call BN_BLINDING_invert_ex, and avoids one use of
687 BN_BLINDING_update for each BN_BLINDING structure (previously,
688 the last update always remained unused).
689 [Emilia Käsper (Google)]
691 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
692 [Bob Buckholz (Google)]
694 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
696 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
697 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
698 [Kaspar Brand <ossl@velox.ch>]
700 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
701 for multi-threaded use of ECDH. (CVE-2011-3210)
702 [Adam Langley (Google)]
704 *) Fix x509_name_ex_d2i memory leak on bad inputs.
707 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
708 signature public key algorithm by using OID xref utilities instead.
709 Before this you could only use some ECC ciphersuites with SHA1 only.
712 *) Add protection against ECDSA timing attacks as mentioned in the paper
713 by Billy Bob Brumley and Nicola Tuveri, see:
715 http://eprint.iacr.org/2011/232.pdf
717 [Billy Bob Brumley and Nicola Tuveri]
719 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
721 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
722 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
724 *) Fix bug in string printing code: if *any* escaping is enabled we must
725 escape the escape character (backslash) or the resulting string is
729 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
731 *) Disable code workaround for ancient and obsolete Netscape browsers
732 and servers: an attacker can use it in a ciphersuite downgrade attack.
733 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
736 *) Fixed J-PAKE implementation error, originally discovered by
737 Sebastien Martini, further info and confirmation from Stefan
738 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
741 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
743 *) Fix extension code to avoid race conditions which can result in a buffer
744 overrun vulnerability: resumed sessions must not be modified as they can
745 be shared by multiple threads. CVE-2010-3864
748 *) Fix WIN32 build system to correctly link an ENGINE directory into
752 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
754 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
756 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
758 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
760 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
761 context. The operation can be customised via the ctrl mechanism in
762 case ENGINEs want to include additional functionality.
765 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
768 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
769 output hashes compatible with older versions of OpenSSL.
770 [Willy Weisz <weisz@vcpc.univie.ac.at>]
772 *) Fix compression algorithm handling: if resuming a session use the
773 compression algorithm of the resumed session instead of determining
774 it from client hello again. Don't allow server to change algorithm.
777 *) Add load_crls() function to apps tidying load_certs() too. Add option
778 to verify utility to allow additional CRLs to be included.
781 *) Update OCSP request code to permit adding custom headers to the request:
782 some responders need this.
785 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
787 [Julia Lawall <julia@diku.dk>]
789 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
790 needlessly dereferenced structures, used obsolete functions and
791 didn't handle all updated verify codes correctly.
794 *) Disable MD2 in the default configuration.
797 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
798 indicate the initial BIO being pushed or popped. This makes it possible
799 to determine whether the BIO is the one explicitly called or as a result
800 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
801 it handles reference counts correctly and doesn't zero out the I/O bio
802 when it is not being explicitly popped. WARNING: applications which
803 included workarounds for the old buggy behaviour will need to be modified
804 or they could free up already freed BIOs.
807 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
808 renaming to all platforms (within the 0.9.8 branch, this was
809 done conditionally on Netware platforms to avoid a name clash).
810 [Guenter <lists@gknw.net>]
812 *) Add ECDHE and PSK support to DTLS.
813 [Michael Tuexen <tuexen@fh-muenster.de>]
815 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
819 *) Add "missing" function EVP_MD_flags() (without this the only way to
820 retrieve a digest flags is by accessing the structure directly. Update
821 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
822 or cipher is registered as in the "from" argument. Print out all
823 registered digests in the dgst usage message instead of manually
824 attempting to work them out.
827 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
828 this allows the use of compression and extensions. Change default cipher
829 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
830 by default unless an application cipher string requests it.
833 *) Alter match criteria in PKCS12_parse(). It used to try to use local
834 key ids to find matching certificates and keys but some PKCS#12 files
835 don't follow the (somewhat unwritten) rules and this strategy fails.
836 Now just gather all certificates together and the first private key
837 then look for the first certificate that matches the key.
840 *) Support use of registered digest and cipher names for dgst and cipher
841 commands instead of having to add each one as a special case. So now
848 openssl dgst -sha256 foo
850 and this works for ENGINE based algorithms too.
854 *) Update Gost ENGINE to support parameter files.
855 [Victor B. Wagner <vitus@cryptocom.ru>]
857 *) Support GeneralizedTime in ca utility.
858 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
860 *) Enhance the hash format used for certificate directory links. The new
861 form uses the canonical encoding (meaning equivalent names will work
862 even if they aren't identical) and uses SHA1 instead of MD5. This form
863 is incompatible with the older format and as a result c_rehash should
864 be used to rebuild symbolic links.
867 *) Make PKCS#8 the default write format for private keys, replacing the
868 traditional format. This form is standardised, more secure and doesn't
869 include an implicit MD5 dependency.
872 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
873 committed to OpenSSL should pass this lot as a minimum.
876 *) Add session ticket override functionality for use by EAP-FAST.
877 [Jouni Malinen <j@w1.fi>]
879 *) Modify HMAC functions to return a value. Since these can be implemented
880 in an ENGINE errors can occur.
883 *) Type-checked OBJ_bsearch_ex.
886 *) Type-checked OBJ_bsearch. Also some constification necessitated
887 by type-checking. Still to come: TXT_DB, bsearch(?),
888 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
892 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
893 seconds to a tm structure directly, instead of going through OS
894 specific date routines. This avoids any issues with OS routines such
895 as the year 2038 bug. New *_adj() functions for ASN1 time structures
896 and X509_time_adj_ex() to cover the extended range. The existing
897 X509_time_adj() is still usable and will no longer have any date issues.
900 *) Delta CRL support. New use deltas option which will attempt to locate
901 and search any appropriate delta CRLs available.
903 This work was sponsored by Google.
906 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
907 code and add additional score elements. Validate alternate CRL paths
908 as part of the CRL checking and indicate a new error "CRL path validation
909 error" in this case. Applications wanting additional details can use
910 the verify callback and check the new "parent" field. If this is not
911 NULL CRL path validation is taking place. Existing applications wont
912 see this because it requires extended CRL support which is off by
915 This work was sponsored by Google.
918 *) Support for freshest CRL extension.
920 This work was sponsored by Google.
923 *) Initial indirect CRL support. Currently only supported in the CRLs
924 passed directly and not via lookup. Process certificate issuer
925 CRL entry extension and lookup CRL entries by bother issuer name
926 and serial number. Check and process CRL issuer entry in IDP extension.
928 This work was sponsored by Google.
931 *) Add support for distinct certificate and CRL paths. The CRL issuer
932 certificate is validated separately in this case. Only enabled if
933 an extended CRL support flag is set: this flag will enable additional
934 CRL functionality in future.
936 This work was sponsored by Google.
939 *) Add support for policy mappings extension.
941 This work was sponsored by Google.
944 *) Fixes to pathlength constraint, self issued certificate handling,
945 policy processing to align with RFC3280 and PKITS tests.
947 This work was sponsored by Google.
950 *) Support for name constraints certificate extension. DN, email, DNS
951 and URI types are currently supported.
953 This work was sponsored by Google.
956 *) To cater for systems that provide a pointer-based thread ID rather
957 than numeric, deprecate the current numeric thread ID mechanism and
958 replace it with a structure and associated callback type. This
959 mechanism allows a numeric "hash" to be extracted from a thread ID in
960 either case, and on platforms where pointers are larger than 'long',
961 mixing is done to help ensure the numeric 'hash' is usable even if it
962 can't be guaranteed unique. The default mechanism is to use "&errno"
963 as a pointer-based thread ID to distinguish between threads.
965 Applications that want to provide their own thread IDs should now use
966 CRYPTO_THREADID_set_callback() to register a callback that will call
967 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
969 Note that ERR_remove_state() is now deprecated, because it is tied
970 to the assumption that thread IDs are numeric. ERR_remove_state(0)
971 to free the current thread's error state should be replaced by
972 ERR_remove_thread_state(NULL).
974 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
975 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
976 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
977 application was previously providing a numeric thread callback that
978 was inappropriate for distinguishing threads, then uniqueness might
979 have been obtained with &errno that happened immediately in the
980 intermediate development versions of OpenSSL; this is no longer the
981 case, the numeric thread callback will now override the automatic use
983 [Geoff Thorpe, with help from Bodo Moeller]
985 *) Initial support for different CRL issuing certificates. This covers a
986 simple case where the self issued certificates in the chain exist and
987 the real CRL issuer is higher in the existing chain.
989 This work was sponsored by Google.
992 *) Removed effectively defunct crypto/store from the build.
995 *) Revamp of STACK to provide stronger type-checking. Still to come:
996 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
997 ASN1_STRING, CONF_VALUE.
1000 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1001 RAM on SSL connections. This option can save about 34k per idle SSL.
1004 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1005 STACK, TXT_DB, bsearch, qsort.
1008 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1009 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1010 support for data, signedData, compressedData, digestedData and
1011 encryptedData, envelopedData types included. Scripts to check against
1012 RFC4134 examples draft and interop and consistency checks of many
1013 content types and variants.
1016 *) Add options to enc utility to support use of zlib compression BIO.
1019 *) Extend mk1mf to support importing of options and assembly language
1020 files from Configure script, currently only included in VC-WIN32.
1021 The assembly language rules can now optionally generate the source
1022 files from the associated perl scripts.
1025 *) Implement remaining functionality needed to support GOST ciphersuites.
1026 Interop testing has been performed using CryptoPro implementations.
1027 [Victor B. Wagner <vitus@cryptocom.ru>]
1029 *) s390x assembler pack.
1032 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1036 *) Implement Opaque PRF Input TLS extension as specified in
1037 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1038 official specification yet and no extension type assignment by
1039 IANA exists, this extension (for now) will have to be explicitly
1040 enabled when building OpenSSL by providing the extension number
1041 to use. For example, specify an option
1043 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1045 to the "config" or "Configure" script to enable the extension,
1046 assuming extension number 0x9527 (which is a completely arbitrary
1047 and unofficial assignment based on the MD5 hash of the Internet
1048 Draft). Note that by doing so, you potentially lose
1049 interoperability with other TLS implementations since these might
1050 be using the same extension number for other purposes.
1052 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1053 opaque PRF input value to use in the handshake. This will create
1054 an interal copy of the length-'len' string at 'src', and will
1055 return non-zero for success.
1057 To get more control and flexibility, provide a callback function
1060 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1061 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1065 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1068 Callback function 'cb' will be called in handshakes, and is
1069 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1070 Argument 'arg' is for application purposes (the value as given to
1071 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1072 be provided to the callback function). The callback function
1073 has to return non-zero to report success: usually 1 to use opaque
1074 PRF input just if possible, or 2 to enforce use of the opaque PRF
1075 input. In the latter case, the library will abort the handshake
1076 if opaque PRF input is not successfully negotiated.
1078 Arguments 'peerinput' and 'len' given to the callback function
1079 will always be NULL and 0 in the case of a client. A server will
1080 see the client's opaque PRF input through these variables if
1081 available (NULL and 0 otherwise). Note that if the server
1082 provides an opaque PRF input, the length must be the same as the
1083 length of the client's opaque PRF input.
1085 Note that the callback function will only be called when creating
1086 a new session (session resumption can resume whatever was
1087 previously negotiated), and will not be called in SSL 2.0
1088 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1089 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1090 for applications that need to enforce opaque PRF input.
1094 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1097 [Victor B. Wagner <vitus@cryptocom.ru>]
1099 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1100 RFC4507bis. The encrypted ticket format is an encrypted encoded
1101 SSL_SESSION structure, that way new session features are automatically
1104 If a client application caches session in an SSL_SESSION structure
1105 support is transparent because tickets are now stored in the encoded
1108 The SSL_CTX structure automatically generates keys for ticket
1109 protection in servers so again support should be possible
1110 with no application modification.
1112 If a client or server wishes to disable RFC4507 support then the option
1113 SSL_OP_NO_TICKET can be set.
1115 Add a TLS extension debugging callback to allow the contents of any client
1116 or server extensions to be examined.
1118 This work was sponsored by Google.
1121 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1122 OpenSSL should now compile cleanly on gcc 4.2
1123 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1125 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1126 support including streaming MAC support: this is required for GOST
1127 ciphersuite support.
1128 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1130 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1131 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1132 to output in BER and PEM format.
1135 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1136 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1137 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1138 ENGINE support for HMAC keys which are unextractable. New -mac and
1139 -macopt options to dgst utility.
1142 *) New option -sigopt to dgst utility. Update dgst to use
1143 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1144 alternative signing paramaters such as X9.31 or PSS in the dgst
1148 *) Change ssl_cipher_apply_rule(), the internal function that does
1149 the work each time a ciphersuite string requests enabling
1150 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1151 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1152 the order of disabled ciphersuites such that those ciphersuites
1153 that most recently went from enabled to disabled not only stay
1154 in order with respect to each other, but also have higher priority
1155 than other disabled ciphersuites the next time ciphersuites are
1158 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1159 the same ciphersuites as with "HIGH" alone, but in a specific
1160 order where the PSK ciphersuites come first (since they are the
1161 most recently disabled ciphersuites when "HIGH" is parsed).
1163 Also, change ssl_create_cipher_list() (using this new
1164 funcionality) such that between otherwise identical
1165 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1169 *) Change ssl_create_cipher_list() so that it automatically
1170 arranges the ciphersuites in reasonable order before starting
1171 to process the rule string. Thus, the definition for "DEFAULT"
1172 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1173 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1174 This makes it much easier to arrive at a reasonable default order
1175 in applications for which anonymous ciphers are OK (meaning
1176 that you can't actually use DEFAULT).
1177 [Bodo Moeller; suggested by Victor Duchovni]
1179 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1180 processing) into multiple integers instead of setting
1181 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1182 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1183 (These masks as well as the individual bit definitions are hidden
1184 away into the non-exported interface ssl/ssl_locl.h, so this
1185 change to the definition of the SSL_CIPHER structure shouldn't
1186 affect applications.) This give us more bits for each of these
1187 categories, so there is no longer a need to coagulate AES128 and
1188 AES256 into a single algorithm bit, and to coagulate Camellia128
1189 and Camellia256 into a single algorithm bit, which has led to all
1192 Thus, among other things, the kludge introduced in 0.9.7m and
1193 0.9.8e for masking out AES256 independently of AES128 or masking
1194 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1196 With the change, we also introduce new ciphersuite aliases that
1197 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1201 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1202 Use the leftmost N bytes of the signature input if the input is
1203 larger than the prime q (with N being the size in bytes of q).
1206 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1207 it yet and it is largely untested.
1210 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1213 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1214 some compilers (gcc 4.2 and later) reject their use. Safestack is
1215 reimplemented. Update ASN1 to avoid use of legacy functions.
1218 *) Win32/64 targets are linked with Winsock2.
1221 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1222 to external functions. This can be used to increase CRL handling
1223 efficiency especially when CRLs are very large by (for example) storing
1224 the CRL revoked certificates in a database.
1227 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1228 new CRLs added to a directory can be used. New command line option
1229 -verify_return_error to s_client and s_server. This causes real errors
1230 to be returned by the verify callback instead of carrying on no matter
1231 what. This reflects the way a "real world" verify callback would behave.
1234 *) GOST engine, supporting several GOST algorithms and public key formats.
1235 Kindly donated by Cryptocom.
1238 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1239 partitioned by DP are handled but no indirect CRL or reason partitioning
1240 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1241 selected via a scoring technique which handles IDP and AKID in CRLs.
1244 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1245 will ultimately be used for all verify operations: this will remove the
1246 X509_STORE dependency on certificate verification and allow alternative
1247 lookup methods. X509_STORE based implementations of these two callbacks.
1250 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1251 Modify get_crl() to find a valid (unexpired) CRL if possible.
1254 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1255 this would be called X509_CRL_cmp() but that name is already used by
1256 a function that just compares CRL issuer names. Cache several CRL
1257 extensions in X509_CRL structure and cache CRLDP in X509.
1260 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1261 this maps equivalent X509_NAME structures into a consistent structure.
1262 Name comparison can then be performed rapidly using memcmp().
1265 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1269 *) Allow digests to supply their own micalg string for S/MIME type using
1270 the ctrl EVP_MD_CTRL_MICALG.
1273 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1274 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1275 ctrl. It can then customise the structure before and/or after signing
1279 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1280 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1281 to free up any added signature OIDs.
1284 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1285 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1286 digest and cipher tables. New options added to openssl utility:
1287 list-message-digest-algorithms and list-cipher-algorithms.
1290 *) Change the array representation of binary polynomials: the list
1291 of degrees of non-zero coefficients is now terminated with -1.
1292 Previously it was terminated with 0, which was also part of the
1293 value; thus, the array representation was not applicable to
1294 polynomials where t^0 has coefficient zero. This change makes
1295 the array representation useful in a more general context.
1298 *) Various modifications and fixes to SSL/TLS cipher string
1299 handling. For ECC, the code now distinguishes between fixed ECDH
1300 with RSA certificates on the one hand and with ECDSA certificates
1301 on the other hand, since these are separate ciphersuites. The
1302 unused code for Fortezza ciphersuites has been removed.
1304 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1305 (not "ECDHE"). For consistency with the code for DH
1306 certificates, use of ECDH certificates is now considered ECDH
1307 authentication, not RSA or ECDSA authentication (the latter is
1308 merely the CA's signing algorithm and not actively used in the
1311 The temporary ciphersuite alias "ECCdraft" is no longer
1312 available, and ECC ciphersuites are no longer excluded from "ALL"
1313 and "DEFAULT". The following aliases now exist for RFC 4492
1314 ciphersuites, most of these by analogy with the DH case:
1316 kECDHr - ECDH cert, signed with RSA
1317 kECDHe - ECDH cert, signed with ECDSA
1318 kECDH - ECDH cert (signed with either RSA or ECDSA)
1319 kEECDH - ephemeral ECDH
1320 ECDH - ECDH cert or ephemeral ECDH
1326 AECDH - anonymous ECDH
1327 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1331 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1332 Use correct micalg parameters depending on digest(s) in signed message.
1335 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1336 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1339 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1340 an engine to register a method. Add ENGINE lookups for methods and
1341 functional reference processing.
1344 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1345 EVP_{Sign,Verify}* which allow an application to customise the signature
1349 *) New -resign option to smime utility. This adds one or more signers
1350 to an existing PKCS#7 signedData structure. Also -md option to use an
1351 alternative message digest algorithm for signing.
1354 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1355 create PKCS7 structures containing multiple signers. Update smime
1356 application to support multiple signers.
1359 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1363 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1364 Reorganize PBE internals to lookup from a static table using NIDs,
1365 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1366 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1367 PRF which will be automatically used with PBES2.
1370 *) Replace the algorithm specific calls to generate keys in "req" with the
1374 *) Update PKCS#7 enveloped data routines to use new API. This is now
1375 supported by any public key method supporting the encrypt operation. A
1376 ctrl is added to allow the public key algorithm to examine or modify
1377 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1381 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1382 a default digest type to use. In most cases this will be SHA1 but some
1383 algorithms (such as GOST) need to specify an alternative digest. The
1384 return value indicates how strong the prefernce is 1 means optional and
1385 2 is mandatory (that is it is the only supported type). Modify
1386 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1387 use the default md. Update openssl utilities to use the default digest
1388 type for signing if it is not explicitly indicated.
1391 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1392 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1393 signing method from the key type. This effectively removes the link
1394 between digests and public key types.
1397 *) Add an OID cross reference table and utility functions. Its purpose is to
1398 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1399 rsaEncryption. This will allow some of the algorithm specific hackery
1400 needed to use the correct OID to be removed.
1403 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1404 structures for PKCS7_sign(). They are now set up by the relevant public
1408 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1411 *) Add support for key derivation (agreement) in the API, DH method and
1415 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1416 public and private key formats. As a side effect these add additional
1417 command line functionality not previously available: DSA signatures can be
1418 generated and verified using pkeyutl and DH key support and generation in
1423 [Oliver Tappe <zooey@hirschkaefer.de>]
1425 *) New make target "install_html_docs" installs HTML renditions of the
1427 [Oliver Tappe <zooey@hirschkaefer.de>]
1429 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1430 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1431 support key and parameter generation and add initial key generation
1432 functionality for RSA.
1435 *) Add functions for main EVP_PKEY_method operations. The undocumented
1436 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1437 EVP_PKEY_{encrypt,decrypt}_old.
1440 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1441 key API, doesn't do much yet.
1444 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1445 public key algorithms. New option to openssl utility:
1446 "list-public-key-algorithms" to print out info.
1449 *) Implement the Supported Elliptic Curves Extension for
1450 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1453 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1454 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1457 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1458 utilities such as rsa, dsa, dsaparam etc except they process any key
1462 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1463 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1464 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1468 *) Initial support for pluggable public key ASN1.
1469 De-spaghettify the public key ASN1 handling. Move public and private
1470 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1471 algorithm specific handling to a single module within the relevant
1472 algorithm directory. Add functions to allow (near) opaque processing
1473 of public and private key structures.
1476 *) Implement the Supported Point Formats Extension for
1477 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1480 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1481 for the psk identity [hint] and the psk callback functions to the
1482 SSL_SESSION, SSL and SSL_CTX structure.
1485 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1489 SSL_CTX_use_psk_identity_hint
1490 SSL_get_psk_identity_hint
1491 SSL_get_psk_identity
1492 SSL_use_psk_identity_hint
1494 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1496 *) Add RFC 3161 compliant time stamp request creation, response generation
1497 and response verification functionality.
1498 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1500 *) Add initial support for TLS extensions, specifically for the server_name
1501 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1502 have new members for a host name. The SSL data structure has an
1503 additional member SSL_CTX *initial_ctx so that new sessions can be
1504 stored in that context to allow for session resumption, even after the
1505 SSL has been switched to a new SSL_CTX in reaction to a client's
1506 server_name extension.
1508 New functions (subject to change):
1510 SSL_get_servername()
1511 SSL_get_servername_type()
1514 New CTRL codes and macros (subject to change):
1516 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1517 - SSL_CTX_set_tlsext_servername_callback()
1518 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1519 - SSL_CTX_set_tlsext_servername_arg()
1520 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1522 openssl s_client has a new '-servername ...' option.
1524 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1525 '-key2 ...', '-servername_fatal' (subject to change). This allows
1526 testing the HostName extension for a specific single host name ('-cert'
1527 and '-key' remain fallbacks for handshakes without HostName
1528 negotiation). If the unrecogninzed_name alert has to be sent, this by
1529 default is a warning; it becomes fatal with the '-servername_fatal'
1532 [Peter Sylvester, Remy Allais, Christophe Renou]
1534 *) Whirlpool hash implementation is added.
1537 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1538 bn(64,32). Because of instruction set limitations it doesn't have
1539 any negative impact on performance. This was done mostly in order
1540 to make it possible to share assembler modules, such as bn_mul_mont
1541 implementations, between 32- and 64-bit builds without hassle.
1544 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1545 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1549 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1550 dedicated Montgomery multiplication procedure, is introduced.
1551 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1552 "64-bit" performance on certain 32-bit targets.
1555 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1556 in SSL structures. New SSL ctrl to set maximum send fragment size.
1557 Save memory by seeting the I/O buffer sizes dynamically instead of
1558 using the maximum available value.
1561 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1562 in addition to the text details.
1565 *) Very, very preliminary EXPERIMENTAL support for printing of general
1566 ASN1 structures. This currently produces rather ugly output and doesn't
1567 handle several customised structures at all.
1570 *) Integrated support for PVK file format and some related formats such
1571 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1572 these in the 'rsa' and 'dsa' utilities.
1575 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1578 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1579 place for the (very old) "NETSCAPE" format certificates which are now
1580 handled using new ASN1 code equivalents.
1583 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1584 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1585 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1588 *) Modify CRL distribution points extension code to print out previously
1589 unsupported fields. Enhance extension setting code to allow setting of
1593 *) Add print and set support for Issuing Distribution Point CRL extension.
1596 *) Change 'Configure' script to enable Camellia by default.
1599 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1601 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1602 Thanks to Antonio Martin, Enterprise Secure Access Research and
1603 Development, Cisco Systems, Inc. for discovering this bug and
1604 preparing a fix. (CVE-2012-0050)
1607 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1609 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1610 of the Vaudenay padding oracle attack on CBC mode encryption
1611 which enables an efficient plaintext recovery attack against
1612 the OpenSSL implementation of DTLS. Their attack exploits timing
1613 differences arising during decryption processing. A research
1614 paper describing this attack can be found at:
1615 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1616 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1617 Security Group at Royal Holloway, University of London
1618 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1619 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1620 for preparing the fix. (CVE-2011-4108)
1621 [Robin Seggelmann, Michael Tuexen]
1623 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1624 [Ben Laurie, Kasper <ekasper@google.com>]
1626 *) Clear bytes used for block padding of SSL 3.0 records.
1628 [Adam Langley (Google)]
1630 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1631 Kadianakis <desnacked@gmail.com> for discovering this issue and
1632 Adam Langley for preparing the fix. (CVE-2011-4619)
1633 [Adam Langley (Google)]
1635 *) Prevent malformed RFC3779 data triggering an assertion failure.
1636 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1637 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1638 [Rob Austein <sra@hactrn.net>]
1640 *) Fix ssl_ciph.c set-up race.
1641 [Adam Langley (Google)]
1643 *) Fix spurious failures in ecdsatest.c.
1644 [Emilia Käsper (Google)]
1646 *) Fix the BIO_f_buffer() implementation (which was mixing different
1647 interpretations of the '..._len' fields).
1648 [Adam Langley (Google)]
1650 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1651 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1652 threads won't reuse the same blinding coefficients.
1654 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1655 lock to call BN_BLINDING_invert_ex, and avoids one use of
1656 BN_BLINDING_update for each BN_BLINDING structure (previously,
1657 the last update always remained unused).
1658 [Emilia Käsper (Google)]
1660 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1661 for multi-threaded use of ECDH.
1662 [Adam Langley (Google)]
1664 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1667 *) Add protection against ECDSA timing attacks as mentioned in the paper
1668 by Billy Bob Brumley and Nicola Tuveri, see:
1670 http://eprint.iacr.org/2011/232.pdf
1672 [Billy Bob Brumley and Nicola Tuveri]
1674 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1676 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1677 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1679 *) Fix bug in string printing code: if *any* escaping is enabled we must
1680 escape the escape character (backslash) or the resulting string is
1684 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1686 *) Disable code workaround for ancient and obsolete Netscape browsers
1687 and servers: an attacker can use it in a ciphersuite downgrade attack.
1688 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1691 *) Fixed J-PAKE implementation error, originally discovered by
1692 Sebastien Martini, further info and confirmation from Stefan
1693 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1696 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1698 *) Fix extension code to avoid race conditions which can result in a buffer
1699 overrun vulnerability: resumed sessions must not be modified as they can
1700 be shared by multiple threads. CVE-2010-3864
1703 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1706 *) Don't reencode certificate when calculating signature: cache and use
1707 the original encoding instead. This makes signature verification of
1708 some broken encodings work correctly.
1711 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1712 is also one of the inputs.
1713 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1715 *) Don't repeatedly append PBE algorithms to table if they already exist.
1716 Sort table on each new add. This effectively makes the table read only
1717 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1721 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1723 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1726 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1727 access or freeing data twice (CVE-2010-0742)
1728 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1730 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1731 common in certificates and some applications which only call
1732 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1736 Reduce copying into .apps and .test in makevms.com
1737 Don't try to use blank CA certificate in CA.com
1738 Allow use of C files from original directories in maketests.com
1739 [Steven M. Schweda" <sms@antinode.info>]
1741 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1743 *) When rejecting SSL/TLS records due to an incorrect version number, never
1744 update s->server with a new major version number. As of
1745 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1746 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1747 the previous behavior could result in a read attempt at NULL when
1748 receiving specific incorrect SSL/TLS records once record payload
1749 protection is active. (CVE-2010-0740)
1750 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1752 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1753 could be crashed if the relevant tables were not present (e.g. chrooted).
1754 [Tomas Hoger <thoger@redhat.com>]
1756 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1758 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1759 [Martin Olsson, Neel Mehta]
1761 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1762 accommodate for stack sorting, always a write lock!).
1765 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1766 excessive delays in the RAND_poll(): over a minute. As a workaround
1767 include a time check in the inner Heap32Next loop too.
1770 *) The code that handled flushing of data in SSL/TLS originally used the
1771 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1772 the problem outlined in PR#1949. The fix suggested there however can
1773 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1774 of Apache). So instead simplify the code to flush unconditionally.
1775 This should be fine since flushing with no data to flush is a no op.
1778 *) Handle TLS versions 2.0 and later properly and correctly use the
1779 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1780 off ancient servers have a habit of sticking around for a while...
1783 *) Modify compression code so it frees up structures without using the
1784 ex_data callbacks. This works around a problem where some applications
1785 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1786 restarting) then use compression (e.g. SSL with compression) later.
1787 This results in significant per-connection memory leaks and
1788 has caused some security issues including CVE-2008-1678 and
1792 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1793 change when encrypting or decrypting.
1796 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1797 connect and renegotiate with servers which do not support RI.
1798 Until RI is more widely deployed this option is enabled by default.
1801 *) Add "missing" ssl ctrls to clear options and mode.
1804 *) If client attempts to renegotiate and doesn't support RI respond with
1805 a no_renegotiation alert as required by RFC5746. Some renegotiating
1806 TLS clients will continue a connection gracefully when they receive
1807 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1808 waiting for a server hello which it will never receive. Now we treat a
1809 received no_renegotiation alert as a fatal error. This is because
1810 applications requesting a renegotiation might well expect it to succeed
1811 and would have no code in place to handle the server denying it so the
1812 only safe thing to do is to terminate the connection.
1815 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1816 peer supports secure renegotiation and 0 otherwise. Print out peer
1817 renegotiation support in s_client/s_server.
1820 *) Replace the highly broken and deprecated SPKAC certification method with
1821 the updated NID creation version. This should correctly handle UTF8.
1824 *) Implement RFC5746. Re-enable renegotiation but require the extension
1825 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1826 turns out to be a bad idea. It has been replaced by
1827 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1828 SSL_CTX_set_options(). This is really not recommended unless you
1829 know what you are doing.
1830 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1832 *) Fixes to stateless session resumption handling. Use initial_ctx when
1833 issuing and attempting to decrypt tickets in case it has changed during
1834 servername handling. Use a non-zero length session ID when attempting
1835 stateless session resumption: this makes it possible to determine if
1836 a resumption has occurred immediately after receiving server hello
1837 (several places in OpenSSL subtly assume this) instead of later in
1841 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1842 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1843 fixes for a few places where the return code is not checked
1845 [Julia Lawall <julia@diku.dk>]
1847 *) Add --strict-warnings option to Configure script to include devteam
1848 warnings in other configurations.
1851 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1852 makes it possible to install openssl libraries in locations which
1853 have names other than "lib", for example "/usr/lib64" which some
1855 [Steve Henson, based on patch from Jeremy Utley]
1857 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1858 X690 8.9.12 and can produce some misleading textual output of OIDs.
1859 [Steve Henson, reported by Dan Kaminsky]
1861 *) Delete MD2 from algorithm tables. This follows the recommendation in
1862 several standards that it is not used in new applications due to
1863 several cryptographic weaknesses. For binary compatibility reasons
1864 the MD2 API is still compiled in by default.
1867 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1871 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1872 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1874 [Guenter <lists@gknw.net>]
1876 *) Fix the server certificate chain building code to use X509_verify_cert(),
1877 it used to have an ad-hoc builder which was unable to cope with anything
1878 other than a simple chain.
1879 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1881 *) Don't check self signed certificate signatures in X509_verify_cert()
1882 by default (a flag can override this): it just wastes time without
1883 adding any security. As a useful side effect self signed root CAs
1884 with non-FIPS digests are now usable in FIPS mode.
1887 *) In dtls1_process_out_of_seq_message() the check if the current message
1888 is already buffered was missing. For every new message was memory
1889 allocated, allowing an attacker to perform an denial of service attack
1890 with sending out of seq handshake messages until there is no memory
1891 left. Additionally every future messege was buffered, even if the
1892 sequence number made no sense and would be part of another handshake.
1893 So only messages with sequence numbers less than 10 in advance will be
1894 buffered. (CVE-2009-1378)
1895 [Robin Seggelmann, discovered by Daniel Mentz]
1897 *) Records are buffered if they arrive with a future epoch to be
1898 processed after finishing the corresponding handshake. There is
1899 currently no limitation to this buffer allowing an attacker to perform
1900 a DOS attack with sending records with future epochs until there is no
1901 memory left. This patch adds the pqueue_size() function to detemine
1902 the size of a buffer and limits the record buffer to 100 entries.
1904 [Robin Seggelmann, discovered by Daniel Mentz]
1906 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1907 parent structure is freed. (CVE-2009-1379)
1910 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1911 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1914 [Ilya O. <vrghost@gmail.com>]
1916 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1918 *) Disable renegotiation completely - this fixes a severe security
1919 problem (CVE-2009-3555) at the cost of breaking all
1920 renegotiation. Renegotiation can be re-enabled by setting
1921 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1922 run-time. This is really not recommended unless you know what
1926 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1928 *) Don't set val to NULL when freeing up structures, it is freed up by
1929 underlying code. If sizeof(void *) > sizeof(long) this can result in
1930 zeroing past the valid field. (CVE-2009-0789)
1931 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1933 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1934 checked correctly. This would allow some invalid signed attributes to
1935 appear to verify correctly. (CVE-2009-0591)
1936 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1938 *) Reject UniversalString and BMPString types with invalid lengths. This
1939 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1940 a legal length. (CVE-2009-0590)
1943 *) Set S/MIME signing as the default purpose rather than setting it
1944 unconditionally. This allows applications to override it at the store
1948 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1949 to handle some structures.
1952 *) Improve efficiency of mem_gets: don't search whole buffer each time
1954 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1956 *) New -hex option for openssl rand.
1959 *) Print out UTF8String and NumericString when parsing ASN1.
1962 *) Support NumericString type for name components.
1965 *) Allow CC in the environment to override the automatically chosen
1966 compiler. Note that nothing is done to ensure flags work with the
1970 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1972 *) Properly check EVP_VerifyFinal() and similar return values
1974 [Ben Laurie, Bodo Moeller, Google Security Team]
1976 *) Enable TLS extensions by default.
1979 *) Allow the CHIL engine to be loaded, whether the application is
1980 multithreaded or not. (This does not release the developer from the
1981 obligation to set up the dynamic locking callbacks.)
1982 [Sander Temme <sander@temme.net>]
1984 *) Use correct exit code if there is an error in dgst command.
1985 [Steve Henson; problem pointed out by Roland Dirlewanger]
1987 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1988 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1991 *) Add experimental JPAKE support, including demo authentication in
1992 s_client and s_server.
1995 *) Set the comparison function in v3_addr_canonize().
1996 [Rob Austein <sra@hactrn.net>]
1998 *) Add support for XMPP STARTTLS in s_client.
1999 [Philip Paeps <philip@freebsd.org>]
2001 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2002 to ensure that even with this option, only ciphersuites in the
2003 server's preference list will be accepted. (Note that the option
2004 applies only when resuming a session, so the earlier behavior was
2005 just about the algorithm choice for symmetric cryptography.)
2008 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2010 *) Fix NULL pointer dereference if a DTLS server received
2011 ChangeCipherSpec as first record (CVE-2009-1386).
2014 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2015 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2018 *) The fix in 0.9.8c that supposedly got rid of unsafe
2019 double-checked locking was incomplete for RSA blinding,
2020 addressing just one layer of what turns out to have been
2021 doubly unsafe triple-checked locking.
2023 So now fix this for real by retiring the MONT_HELPER macro
2024 in crypto/rsa/rsa_eay.c.
2026 [Bodo Moeller; problem pointed out by Marius Schilder]
2028 *) Various precautionary measures:
2030 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2032 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2033 (NB: This would require knowledge of the secret session ticket key
2034 to exploit, in which case you'd be SOL either way.)
2036 - Change bn_nist.c so that it will properly handle input BIGNUMs
2037 outside the expected range.
2039 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2042 [Neel Mehta, Bodo Moeller]
2044 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2045 the load fails. Useful for distros.
2046 [Ben Laurie and the FreeBSD team]
2048 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2051 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2054 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2056 This work was sponsored by Logica.
2059 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2060 keystores. Support for SSL/TLS client authentication too.
2061 Not compiled unless enable-capieng specified to Configure.
2063 This work was sponsored by Logica.
2066 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2067 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2068 attribute creation routines such as certifcate requests and PKCS#12
2072 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2074 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2075 handshake which could lead to a cilent crash as found using the
2076 Codenomicon TLS test suite (CVE-2008-1672)
2077 [Steve Henson, Mark Cox]
2079 *) Fix double free in TLS server name extensions which could lead to
2080 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2083 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2085 Clear the error queue to ensure that error entries left from
2086 older function calls do not interfere with the correct operation.
2087 [Lutz Jaenicke, Erik de Castro Lopo]
2089 *) Remove root CA certificates of commercial CAs:
2091 The OpenSSL project does not recommend any specific CA and does not
2092 have any policy with respect to including or excluding any CA.
2093 Therefore it does not make any sense to ship an arbitrary selection
2094 of root CA certificates with the OpenSSL software.
2097 *) RSA OAEP patches to fix two separate invalid memory reads.
2098 The first one involves inputs when 'lzero' is greater than
2099 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2100 before the beginning of from). The second one involves inputs where
2101 the 'db' section contains nothing but zeroes (there is a one-byte
2102 invalid read after the end of 'db').
2103 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2105 *) Partial backport from 0.9.9-dev:
2107 Introduce bn_mul_mont (dedicated Montgomery multiplication
2108 procedure) as a candidate for BIGNUM assembler implementation.
2109 While 0.9.9-dev uses assembler for various architectures, only
2110 x86_64 is available by default here in the 0.9.8 branch, and
2111 32-bit x86 is available through a compile-time setting.
2113 To try the 32-bit x86 assembler implementation, use Configure
2114 option "enable-montasm" (which exists only for this backport).
2116 As "enable-montasm" for 32-bit x86 disclaims code stability
2117 anyway, in this constellation we activate additional code
2118 backported from 0.9.9-dev for further performance improvements,
2119 namely BN_from_montgomery_word. (To enable this otherwise,
2120 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2122 [Andy Polyakov (backport partially by Bodo Moeller)]
2124 *) Add TLS session ticket callback. This allows an application to set
2125 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2126 values. This is useful for key rollover for example where several key
2127 sets may exist with different names.
2130 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2131 This was broken until now in 0.9.8 releases, such that the only way
2132 a registered ENGINE could be used (assuming it initialises
2133 successfully on the host) was to explicitly set it as the default
2134 for the relevant algorithms. This is in contradiction with 0.9.7
2135 behaviour and the documentation. With this fix, when an ENGINE is
2136 registered into a given algorithm's table of implementations, the
2137 'uptodate' flag is reset so that auto-discovery will be used next
2138 time a new context for that algorithm attempts to select an
2140 [Ian Lister (tweaked by Geoff Thorpe)]
2142 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2143 implemention in the following ways:
2145 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2148 Lack of BER streaming support means one pass streaming processing is
2149 only supported if data is detached: setting the streaming flag is
2150 ignored for embedded content.
2152 CMS support is disabled by default and must be explicitly enabled
2153 with the enable-cms configuration option.
2156 *) Update the GMP engine glue to do direct copies between BIGNUM and
2157 mpz_t when openssl and GMP use the same limb size. Otherwise the
2158 existing "conversion via a text string export" trick is still used.
2159 [Paul Sheer <paulsheer@gmail.com>]
2161 *) Zlib compression BIO. This is a filter BIO which compressed and
2162 uncompresses any data passed through it.
2165 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2166 RFC3394 compatible AES key wrapping.
2169 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2170 sets string data without copying. X509_ALGOR_set0() and
2171 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2172 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2173 from an X509_ATTRIBUTE structure optionally checking it occurs only
2174 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2178 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2179 to get the expected BN_FLG_CONSTTIME behavior.
2180 [Bodo Moeller (Google)]
2184 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2185 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2186 - added some more tests to do_tests.pl
2187 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2188 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2189 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2190 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2191 - various changes to netware.pl to enable gcc-cross builds on Win32
2193 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2194 - various changes to fix missing prototype warnings
2195 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2196 - added AES, WHIRLPOOL and CPUID assembler code to build files
2197 - added missing AES assembler make rules to mk1mf.pl
2198 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2199 [Guenter Knauf <eflash@gmx.net>]
2201 *) Implement certificate status request TLS extension defined in RFC3546.
2202 A client can set the appropriate parameters and receive the encoded
2203 OCSP response via a callback. A server can query the supplied parameters
2204 and set the encoded OCSP response in the callback. Add simplified examples
2205 to s_client and s_server.
2208 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2210 *) Fix various bugs:
2211 + Binary incompatibility of ssl_ctx_st structure
2212 + DTLS interoperation with non-compliant servers
2213 + Don't call get_session_cb() without proposed session
2214 + Fix ia64 assembler code
2215 [Andy Polyakov, Steve Henson]
2217 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2219 *) DTLS Handshake overhaul. There were longstanding issues with
2220 OpenSSL DTLS implementation, which were making it impossible for
2221 RFC 4347 compliant client to communicate with OpenSSL server.
2222 Unfortunately just fixing these incompatibilities would "cut off"
2223 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2224 server keeps tolerating non RFC compliant syntax. The opposite is
2225 not true, 0.9.8f client can not communicate with earlier server.
2226 This update even addresses CVE-2007-4995.
2229 *) Changes to avoid need for function casts in OpenSSL: some compilers
2230 (gcc 4.2 and later) reject their use.
2231 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2234 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2235 RFC4507bis. The encrypted ticket format is an encrypted encoded
2236 SSL_SESSION structure, that way new session features are automatically
2239 If a client application caches session in an SSL_SESSION structure
2240 support is transparent because tickets are now stored in the encoded
2243 The SSL_CTX structure automatically generates keys for ticket
2244 protection in servers so again support should be possible
2245 with no application modification.
2247 If a client or server wishes to disable RFC4507 support then the option
2248 SSL_OP_NO_TICKET can be set.
2250 Add a TLS extension debugging callback to allow the contents of any client
2251 or server extensions to be examined.
2253 This work was sponsored by Google.
2256 *) Add initial support for TLS extensions, specifically for the server_name
2257 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2258 have new members for a host name. The SSL data structure has an
2259 additional member SSL_CTX *initial_ctx so that new sessions can be
2260 stored in that context to allow for session resumption, even after the
2261 SSL has been switched to a new SSL_CTX in reaction to a client's
2262 server_name extension.
2264 New functions (subject to change):
2266 SSL_get_servername()
2267 SSL_get_servername_type()
2270 New CTRL codes and macros (subject to change):
2272 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2273 - SSL_CTX_set_tlsext_servername_callback()
2274 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2275 - SSL_CTX_set_tlsext_servername_arg()
2276 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2278 openssl s_client has a new '-servername ...' option.
2280 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2281 '-key2 ...', '-servername_fatal' (subject to change). This allows
2282 testing the HostName extension for a specific single host name ('-cert'
2283 and '-key' remain fallbacks for handshakes without HostName
2284 negotiation). If the unrecogninzed_name alert has to be sent, this by
2285 default is a warning; it becomes fatal with the '-servername_fatal'
2288 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2290 *) Add AES and SSE2 assembly language support to VC++ build.
2293 *) Mitigate attack on final subtraction in Montgomery reduction.
2296 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2297 (which previously caused an internal error).
2300 *) Squeeze another 10% out of IGE mode when in != out.
2303 *) AES IGE mode speedup.
2304 [Dean Gaudet (Google)]
2306 *) Add the Korean symmetric 128-bit cipher SEED (see
2307 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2308 add SEED ciphersuites from RFC 4162:
2310 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2311 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2312 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2313 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2315 To minimize changes between patchlevels in the OpenSSL 0.9.8
2316 series, SEED remains excluded from compilation unless OpenSSL
2317 is configured with 'enable-seed'.
2318 [KISA, Bodo Moeller]
2320 *) Mitigate branch prediction attacks, which can be practical if a
2321 single processor is shared, allowing a spy process to extract
2322 information. For detailed background information, see
2323 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2324 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2325 and Necessary Software Countermeasures"). The core of the change
2326 are new versions BN_div_no_branch() and
2327 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2328 respectively, which are slower, but avoid the security-relevant
2329 conditional branches. These are automatically called by BN_div()
2330 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2331 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2332 remove a conditional branch.
2334 BN_FLG_CONSTTIME is the new name for the previous
2335 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2336 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2337 in the exponent causes BN_mod_exp_mont() to use the alternative
2338 implementation in BN_mod_exp_mont_consttime().) The old name
2339 remains as a deprecated alias.
2341 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2342 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2343 constant-time implementations for more than just exponentiation.
2344 Here too the old name is kept as a deprecated alias.
2346 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2347 the BN_BLINDING structure gets an independent copy of the
2348 modulus. This means that the previous "BIGNUM *m" argument to
2349 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2350 essentially becomes "const BIGNUM *m", although we can't actually
2351 change this in the header file before 0.9.9. It allows
2352 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2353 enable BN_FLG_CONSTTIME.
2355 [Matthew D Wood (Intel Corp)]
2357 *) In the SSL/TLS server implementation, be strict about session ID
2358 context matching (which matters if an application uses a single
2359 external cache for different purposes). Previously,
2360 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2361 set. This did ensure strict client verification, but meant that,
2362 with applications using a single external cache for quite
2363 different requirements, clients could circumvent ciphersuite
2364 restrictions for a given session ID context by starting a session
2365 in a different context.
2368 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2369 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2370 authentication-only ciphersuites.
2373 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2374 not complete and could lead to a possible single byte overflow
2375 (CVE-2007-5135) [Ben Laurie]
2377 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2379 *) Since AES128 and AES256 (and similarly Camellia128 and
2380 Camellia256) share a single mask bit in the logic of
2381 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2382 kludge to work properly if AES128 is available and AES256 isn't
2383 (or if Camellia128 is available and Camellia256 isn't).
2386 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2387 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2388 When a point or a seed is encoded in a BIT STRING, we need to
2389 prevent the removal of trailing zero bits to get the proper DER
2390 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2391 of a NamedBitList, for which trailing 0 bits need to be removed.)
2394 *) Have SSL/TLS server implementation tolerate "mismatched" record
2395 protocol version while receiving ClientHello even if the
2396 ClientHello is fragmented. (The server can't insist on the
2397 particular protocol version it has chosen before the ServerHello
2398 message has informed the client about his choice.)
2401 *) Add RFC 3779 support.
2402 [Rob Austein for ARIN, Ben Laurie]
2404 *) Load error codes if they are not already present instead of using a
2405 static variable. This allows them to be cleanly unloaded and reloaded.
2406 Improve header file function name parsing.
2409 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2410 or CAPABILITY handshake as required by RFCs.
2413 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2415 *) Introduce limits to prevent malicious keys being able to
2416 cause a denial of service. (CVE-2006-2940)
2417 [Steve Henson, Bodo Moeller]
2419 *) Fix ASN.1 parsing of certain invalid structures that can result
2420 in a denial of service. (CVE-2006-2937) [Steve Henson]
2422 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2423 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2425 *) Fix SSL client code which could crash if connecting to a
2426 malicious SSLv2 server. (CVE-2006-4343)
2427 [Tavis Ormandy and Will Drewry, Google Security Team]
2429 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2430 match only those. Before that, "AES256-SHA" would be interpreted
2431 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2432 the same strength classification in 0.9.7h) as we currently only
2433 have a single AES bit in the ciphersuite description bitmap.
2434 That change, however, also applied to ciphersuite strings such as
2435 "RC4-MD5" that intentionally matched multiple ciphersuites --
2436 namely, SSL 2.0 ciphersuites in addition to the more common ones
2437 from SSL 3.0/TLS 1.0.
2439 So we change the selection algorithm again: Naming an explicit
2440 ciphersuite selects this one ciphersuite, and any other similar
2441 ciphersuite (same bitmap) from *other* protocol versions.
2442 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2443 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2445 Since SSL 2.0 does not have any ciphersuites for which the
2446 128/256 bit distinction would be relevant, this works for now.
2447 The proper fix will be to use different bits for AES128 and
2448 AES256, which would have avoided the problems from the beginning;
2449 however, bits are scarce, so we can only do this in a new release
2450 (not just a patchlevel) when we can change the SSL_CIPHER
2451 definition to split the single 'unsigned long mask' bitmap into
2452 multiple values to extend the available space.
2456 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2458 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2459 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2461 *) Add AES IGE and biIGE modes.
2464 *) Change the Unix randomness entropy gathering to use poll() when
2465 possible instead of select(), since the latter has some
2466 undesirable limitations.
2467 [Darryl Miles via Richard Levitte and Bodo Moeller]
2469 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2470 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2471 cannot be implicitly activated as part of, e.g., the "AES" alias.
2472 However, please upgrade to OpenSSL 0.9.9[-dev] for
2473 non-experimental use of the ECC ciphersuites to get TLS extension
2474 support, which is required for curve and point format negotiation
2475 to avoid potential handshake problems.
2478 *) Disable rogue ciphersuites:
2480 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2481 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2482 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2484 The latter two were purportedly from
2485 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2488 Also deactivate the remaining ciphersuites from
2489 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2490 unofficial, and the ID has long expired.
2493 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2494 dual-core machines) and other potential thread-safety issues.
2497 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2498 versions), which is now available for royalty-free use
2499 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2500 Also, add Camellia TLS ciphersuites from RFC 4132.
2502 To minimize changes between patchlevels in the OpenSSL 0.9.8
2503 series, Camellia remains excluded from compilation unless OpenSSL
2504 is configured with 'enable-camellia'.
2507 *) Disable the padding bug check when compression is in use. The padding
2508 bug check assumes the first packet is of even length, this is not
2509 necessarily true if compresssion is enabled and can result in false
2510 positives causing handshake failure. The actual bug test is ancient
2511 code so it is hoped that implementations will either have fixed it by
2512 now or any which still have the bug do not support compression.
2515 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2517 *) When applying a cipher rule check to see if string match is an explicit
2518 cipher suite and only match that one cipher suite if it is.
2521 *) Link in manifests for VC++ if needed.
2522 [Austin Ziegler <halostatue@gmail.com>]
2524 *) Update support for ECC-based TLS ciphersuites according to
2525 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2526 TLS extensions, which are supported starting with the 0.9.9
2527 branch, not in the OpenSSL 0.9.8 branch).
2530 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2531 opaque EVP_CIPHER_CTX handling.
2534 *) Fixes and enhancements to zlib compression code. We now only use
2535 "zlib1.dll" and use the default __cdecl calling convention on Win32
2536 to conform with the standards mentioned here:
2537 http://www.zlib.net/DLL_FAQ.txt
2538 Static zlib linking now works on Windows and the new --with-zlib-include
2539 --with-zlib-lib options to Configure can be used to supply the location
2540 of the headers and library. Gracefully handle case where zlib library
2544 *) Several fixes and enhancements to the OID generation code. The old code
2545 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2546 handle numbers larger than ULONG_MAX, truncated printing and had a
2547 non standard OBJ_obj2txt() behaviour.
2550 *) Add support for building of engines under engine/ as shared libraries
2551 under VC++ build system.
2554 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2555 Hopefully, we will not see any false combination of paths any more.
2558 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2560 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2561 (part of SSL_OP_ALL). This option used to disable the
2562 countermeasure against man-in-the-middle protocol-version
2563 rollback in the SSL 2.0 server implementation, which is a bad
2564 idea. (CVE-2005-2969)
2566 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2567 for Information Security, National Institute of Advanced Industrial
2568 Science and Technology [AIST], Japan)]
2570 *) Add two function to clear and return the verify parameter flags.
2573 *) Keep cipherlists sorted in the source instead of sorting them at
2574 runtime, thus removing the need for a lock.
2577 *) Avoid some small subgroup attacks in Diffie-Hellman.
2578 [Nick Mathewson and Ben Laurie]
2580 *) Add functions for well-known primes.
2583 *) Extended Windows CE support.
2584 [Satoshi Nakamura and Andy Polyakov]
2586 *) Initialize SSL_METHOD structures at compile time instead of during
2587 runtime, thus removing the need for a lock.
2590 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2591 attempting to decrypt each encrypted key in turn. Add support to
2595 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2597 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2600 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2603 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2604 key into the same file any more.
2607 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2610 *) Add -utf8 command line and config file option to 'ca'.
2611 [Stefan <stf@udoma.org]
2613 *) Removed the macro des_crypt(), as it seems to conflict with some
2614 libraries. Use DES_crypt().
2617 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2618 involves renaming the source and generated shared-libs for
2619 both. The engines will accept the corrected or legacy ids
2620 ('ncipher' and '4758_cca' respectively) when binding. NB,
2621 this only applies when building 'shared'.
2622 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2624 *) Add attribute functions to EVP_PKEY structure. Modify
2625 PKCS12_create() to recognize a CSP name attribute and
2626 use it. Make -CSP option work again in pkcs12 utility.
2629 *) Add new functionality to the bn blinding code:
2630 - automatic re-creation of the BN_BLINDING parameters after
2631 a fixed number of uses (currently 32)
2632 - add new function for parameter creation
2633 - introduce flags to control the update behaviour of the
2634 BN_BLINDING parameters
2635 - hide BN_BLINDING structure
2636 Add a second BN_BLINDING slot to the RSA structure to improve
2637 performance when a single RSA object is shared among several
2641 *) Add support for DTLS.
2642 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2644 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2645 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2648 *) Remove buggy and incompletet DH cert support from
2649 ssl/ssl_rsa.c and ssl/s3_both.c
2652 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2653 the apps/openssl applications.
2656 *) Compile clean with "-Wall -Wmissing-prototypes
2657 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2658 DEBUG_SAFESTACK must also be set.
2661 *) Change ./Configure so that certain algorithms can be disabled by default.
2662 The new counterpiece to "no-xxx" is "enable-xxx".
2664 The patented RC5 and MDC2 algorithms will now be disabled unless
2665 "enable-rc5" and "enable-mdc2", respectively, are specified.
2667 (IDEA remains enabled despite being patented. This is because IDEA
2668 is frequently required for interoperability, and there is no license
2669 fee for non-commercial use. As before, "no-idea" can be used to
2670 avoid this algorithm.)
2674 *) Add processing of proxy certificates (see RFC 3820). This work was
2675 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2676 EGEE (Enabling Grids for E-science in Europe).
2679 *) RC4 performance overhaul on modern architectures/implementations, such
2680 as Intel P4, IA-64 and AMD64.
2683 *) New utility extract-section.pl. This can be used specify an alternative
2684 section number in a pod file instead of having to treat each file as
2685 a separate case in Makefile. This can be done by adding two lines to the
2688 =for comment openssl_section:XXX
2690 The blank line is mandatory.
2694 *) New arguments -certform, -keyform and -pass for s_client and s_server
2695 to allow alternative format key and certificate files and passphrase
2699 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2700 update associated structures and add various utility functions.
2702 Add new policy related verify parameters, include policy checking in
2703 standard verify code. Enhance 'smime' application with extra parameters
2704 to support policy checking and print out.
2707 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2708 Nehemiah processors. These extensions support AES encryption in hardware
2709 as well as RNG (though RNG support is currently disabled).
2710 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2712 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2715 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2716 [Andy Polyakov and a number of other people]
2718 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2719 implementation contributed by IBM.
2720 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2722 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2723 exponent rather than 'unsigned long'. There is a corresponding change to
2724 the new 'rsa_keygen' element of the RSA_METHOD structure.
2725 [Jelte Jansen, Geoff Thorpe]
2727 *) Functionality for creating the initial serial number file is now
2728 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2730 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2731 number file to 1, which is bound to cause problems. To avoid
2732 the problems while respecting compatibility between different 0.9.7
2733 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2734 CA.pl for serial number initialization. With the new release 0.9.8,
2735 we can fix the problem directly in the 'ca' utility.)
2738 *) Reduced header interdepencies by declaring more opaque objects in
2739 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2740 give fewer recursive includes, which could break lazy source code - so
2741 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2742 developers should define this symbol when building and using openssl to
2743 ensure they track the recommended behaviour, interfaces, [etc], but
2744 backwards-compatible behaviour prevails when this isn't defined.
2747 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2750 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2751 This will generate a random key of the appropriate length based on the
2752 cipher context. The EVP_CIPHER can provide its own random key generation
2753 routine to support keys of a specific form. This is used in the des and
2754 3des routines to generate a key of the correct parity. Update S/MIME
2755 code to use new functions and hence generate correct parity DES keys.
2756 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2757 valid (weak or incorrect parity).
2760 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2761 as looking them up. This is useful when the verified structure may contain
2762 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2763 present unless the new PKCS7_NO_CRL flag is asserted.
2766 *) Extend ASN1 oid configuration module. It now additionally accepts the
2769 shortName = some long name, 1.2.3.4
2772 *) Reimplemented the BN_CTX implementation. There is now no more static
2773 limitation on the number of variables it can handle nor the depth of the
2774 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2775 information can now expand as required, and rather than having a single
2776 static array of bignums, BN_CTX now uses a linked-list of such arrays
2777 allowing it to expand on demand whilst maintaining the usefulness of
2778 BN_CTX's "bundling".
2781 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2782 to allow all RSA operations to function using a single BN_CTX.
2785 *) Preliminary support for certificate policy evaluation and checking. This
2786 is initially intended to pass the tests outlined in "Conformance Testing
2787 of Relying Party Client Certificate Path Processing Logic" v1.07.
2790 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2791 remained unused and not that useful. A variety of other little bignum
2792 tweaks and fixes have also been made continuing on from the audit (see
2796 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2797 associated ASN1, EVP and SSL functions and old ASN1 macros.
2800 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2801 and this should never fail. So the return value from the use of
2802 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2803 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2806 *) BN_CTX_get() should return zero-valued bignums, providing the same
2807 initialised value as BN_new().
2808 [Geoff Thorpe, suggested by Ulf Möller]
2810 *) Support for inhibitAnyPolicy certificate extension.
2813 *) An audit of the BIGNUM code is underway, for which debugging code is
2814 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2815 is considered valid when processing BIGNUMs, and causes execution to
2816 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2817 further steps are taken to deliberately pollute unused data in BIGNUM
2818 structures to try and expose faulty code further on. For now, openssl will
2819 (in its default mode of operation) continue to tolerate the inconsistent
2820 forms that it has tolerated in the past, but authors and packagers should
2821 consider trying openssl and their own applications when compiled with
2822 these debugging symbols defined. It will help highlight potential bugs in
2823 their own code, and will improve the test coverage for OpenSSL itself. At
2824 some point, these tighter rules will become openssl's default to improve
2825 maintainability, though the assert()s and other overheads will remain only
2826 in debugging configurations. See bn.h for more details.
2827 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2829 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2830 that can only be obtained through BN_CTX_new() (which implicitly
2831 initialises it). The presence of this function only made it possible
2832 to overwrite an existing structure (and cause memory leaks).
2835 *) Because of the callback-based approach for implementing LHASH as a
2836 template type, lh_insert() adds opaque objects to hash-tables and
2837 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2838 to clean up those corresponding objects before destroying the hash table
2839 (and losing the object pointers). So some over-zealous constifications in
2840 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2841 objects as "const" and the lh_doall[_arg] callback wrappers are not
2842 prototyped to have "const" restrictions on the object pointers they are
2843 given (and so aren't required to cast them away any more).
2846 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2847 (speed) prefers to use its own implementation. The two implementations
2848 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2849 its object type properly exposed (MS_TM) instead of casting to/from "char
2850 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2851 aren't necessarily the greatest nomenclatures - but this is what was used
2852 internally to the implementation so I've used that for now.
2855 *) Ensure that deprecated functions do not get compiled when
2856 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2857 the self-tests were still using deprecated key-generation functions so
2858 these have been updated also.
2861 *) Reorganise PKCS#7 code to separate the digest location functionality
2862 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2863 New function PKCS7_set_digest() to set the digest type for PKCS#7
2864 digestedData type. Add additional code to correctly generate the
2865 digestedData type and add support for this type in PKCS7 initialization
2869 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2870 structure of type "other".
2873 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2874 sure the loop does correctly stop and breaking ("division by zero")
2875 modulus operations are not performed. The (pre-generated) prime
2876 table crypto/bn/bn_prime.h was already correct, but it could not be
2877 re-generated on some platforms because of the "division by zero"
2878 situation in the script.
2879 [Ralf S. Engelschall]
2881 *) Update support for ECC-based TLS ciphersuites according to
2882 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2883 SHA-1 now is only used for "small" curves (where the
2884 representation of a field element takes up to 24 bytes); for
2885 larger curves, the field element resulting from ECDH is directly
2886 used as premaster secret.
2887 [Douglas Stebila (Sun Microsystems Laboratories)]
2889 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2890 curve secp160r1 to the tests.
2891 [Douglas Stebila (Sun Microsystems Laboratories)]
2893 *) Add the possibility to load symbols globally with DSO.
2894 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2896 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2897 control of the error stack.
2900 *) Add support for STORE in ENGINE.
2903 *) Add the STORE type. The intention is to provide a common interface
2904 to certificate and key stores, be they simple file-based stores, or
2905 HSM-type store, or LDAP stores, or...
2906 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2909 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2910 pass a list of arguments to any function as well as provide a way
2911 for a function to pass data back to the caller.
2914 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2915 works like BUF_strdup() but can be used to duplicate a portion of
2916 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2920 *) Add the function sk_find_ex() which works like sk_find(), but will
2921 return an index to an element even if an exact match couldn't be
2922 found. The index is guaranteed to point at the element where the
2923 searched-for key would be inserted to preserve sorting order.
2926 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2927 takes an extra flags argument for optional functionality. Currently,
2928 the following flags are defined:
2930 OBJ_BSEARCH_VALUE_ON_NOMATCH
2931 This one gets OBJ_bsearch_ex() to return a pointer to the first
2932 element where the comparing function returns a negative or zero
2935 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2936 This one gets OBJ_bsearch_ex() to return a pointer to the first
2937 element where the comparing function returns zero. This is useful
2938 if there are more than one element where the comparing function
2942 *) Make it possible to create self-signed certificates with 'openssl ca'
2943 in such a way that the self-signed certificate becomes part of the
2944 CA database and uses the same mechanisms for serial number generation
2945 as all other certificate signing. The new flag '-selfsign' enables
2946 this functionality. Adapt CA.sh and CA.pl.in.
2949 *) Add functionality to check the public key of a certificate request
2950 against a given private. This is useful to check that a certificate
2951 request can be signed by that key (self-signing).
2954 *) Make it possible to have multiple active certificates with the same
2955 subject in the CA index file. This is done only if the keyword
2956 'unique_subject' is set to 'no' in the main CA section (default
2957 if 'CA_default') of the configuration file. The value is saved
2958 with the database itself in a separate index attribute file,
2959 named like the index file with '.attr' appended to the name.
2962 *) Generate muti valued AVAs using '+' notation in config files for
2966 *) Support for nameConstraints certificate extension.
2969 *) Support for policyConstraints certificate extension.
2972 *) Support for policyMappings certificate extension.
2975 *) Make sure the default DSA_METHOD implementation only uses its
2976 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2977 and change its own handlers to be NULL so as to remove unnecessary
2978 indirection. This lets alternative implementations fallback to the
2979 default implementation more easily.
2982 *) Support for directoryName in GeneralName related extensions
2986 *) Make it possible to link applications using Makefile.shared.
2987 Make that possible even when linking against static libraries!
2990 *) Support for single pass processing for S/MIME signing. This now
2991 means that S/MIME signing can be done from a pipe, in addition
2992 cleartext signing (multipart/signed type) is effectively streaming
2993 and the signed data does not need to be all held in memory.
2995 This is done with a new flag PKCS7_STREAM. When this flag is set
2996 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2997 is done after the data is output (and digests calculated) in
2998 SMIME_write_PKCS7().
3001 *) Add full support for -rpath/-R, both in shared libraries and
3002 applications, at least on the platforms where it's known how
3006 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3007 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3008 will now compute a table of multiples of the generator that
3009 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3010 faster (notably in the case of a single point multiplication,
3011 scalar * generator).
3012 [Nils Larsch, Bodo Moeller]
3014 *) IPv6 support for certificate extensions. The various extensions
3015 which use the IP:a.b.c.d can now take IPv6 addresses using the
3016 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3020 *) Added an ENGINE that implements RSA by performing private key
3021 exponentiations with the GMP library. The conversions to and from
3022 GMP's mpz_t format aren't optimised nor are any montgomery forms
3023 cached, and on x86 it appears OpenSSL's own performance has caught up.
3024 However there are likely to be other architectures where GMP could
3025 provide a boost. This ENGINE is not built in by default, but it can be
3026 specified at Configure time and should be accompanied by the necessary
3027 linker additions, eg;
3028 ./config -DOPENSSL_USE_GMP -lgmp
3031 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3032 testing availability of engines with "-t" - the old behaviour is
3033 produced by increasing the feature's verbosity with "-tt".
3036 *) ECDSA routines: under certain error conditions uninitialized BN objects
3037 could be freed. Solution: make sure initialization is performed early
3038 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3042 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3043 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3044 software implementations. For DSA and DH, parameter generation can
3045 also be overriden by providing the appropriate method callbacks.
3048 *) Change the "progress" mechanism used in key-generation and
3049 primality testing to functions that take a new BN_GENCB pointer in
3050 place of callback/argument pairs. The new API functions have "_ex"
3051 postfixes and the older functions are reimplemented as wrappers for
3052 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3053 declarations of the old functions to help (graceful) attempts to
3054 migrate to the new functions. Also, the new key-generation API
3055 functions operate on a caller-supplied key-structure and return
3056 success/failure rather than returning a key or NULL - this is to
3057 help make "keygen" another member function of RSA_METHOD etc.
3059 Example for using the new callback interface:
3061 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3065 BN_GENCB_set(&my_cb, my_callback, my_arg);
3067 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3068 /* For the meaning of a, b in calls to my_callback(), see the
3069 * documentation of the function that calls the callback.
3070 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3071 * my_callback should return 1 if it wants BN_is_prime_ex()
3072 * to continue, or 0 to stop.
3077 *) Change the ZLIB compression method to be stateful, and make it
3078 available to TLS with the number defined in
3079 draft-ietf-tls-compression-04.txt.
3082 *) Add the ASN.1 structures and functions for CertificatePair, which
3083 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3085 CertificatePair ::= SEQUENCE {
3086 forward [0] Certificate OPTIONAL,
3087 reverse [1] Certificate OPTIONAL,
3088 -- at least one of the pair shall be present -- }
3090 Also implement the PEM functions to read and write certificate
3091 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3093 This needed to be defined, mostly for the sake of the LDAP
3094 attribute crossCertificatePair, but may prove useful elsewhere as
3098 *) Make it possible to inhibit symlinking of shared libraries in
3099 Makefile.shared, for Cygwin's sake.
3102 *) Extend the BIGNUM API by creating a function
3103 void BN_set_negative(BIGNUM *a, int neg);
3104 and a macro that behave like
3105 int BN_is_negative(const BIGNUM *a);
3107 to avoid the need to access 'a->neg' directly in applications.
3110 *) Implement fast modular reduction for pseudo-Mersenne primes
3111 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3112 EC_GROUP_new_curve_GFp() will now automatically use this
3114 [Nils Larsch <nla@trustcenter.de>]
3116 *) Add new lock type (CRYPTO_LOCK_BN).
3119 *) Change the ENGINE framework to automatically load engines
3120 dynamically from specific directories unless they could be
3121 found to already be built in or loaded. Move all the
3122 current engines except for the cryptodev one to a new
3124 The engines in engines/ are built as shared libraries if
3125 the "shared" options was given to ./Configure or ./config.
3126 Otherwise, they are inserted in libcrypto.a.
3127 /usr/local/ssl/engines is the default directory for dynamic
3128 engines, but that can be overriden at configure time through
3129 the usual use of --prefix and/or --openssldir, and at run
3130 time with the environment variable OPENSSL_ENGINES.
3131 [Geoff Thorpe and Richard Levitte]
3133 *) Add Makefile.shared, a helper makefile to build shared
3134 libraries. Addapt Makefile.org.
3137 *) Add version info to Win32 DLLs.
3138 [Peter 'Luna' Runestig" <peter@runestig.com>]
3140 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3141 can be added using this API to created arbitrary PKCS#12
3142 files while avoiding the low level API.
3144 New options to PKCS12_create(), key or cert can be NULL and
3145 will then be omitted from the output file. The encryption
3146 algorithm NIDs can be set to -1 for no encryption, the mac
3147 iteration count can be set to 0 to omit the mac.
3149 Enhance pkcs12 utility by making the -nokeys and -nocerts
3150 options work when creating a PKCS#12 file. New option -nomac
3151 to omit the mac, NONE can be set for an encryption algorithm.
3152 New code is modified to use the enhanced PKCS12_create()
3153 instead of the low level API.
3156 *) Extend ASN1 encoder to support indefinite length constructed
3157 encoding. This can output sequences tags and octet strings in
3158 this form. Modify pk7_asn1.c to support indefinite length
3159 encoding. This is experimental and needs additional code to
3160 be useful, such as an ASN1 bio and some enhanced streaming
3163 Extend template encode functionality so that tagging is passed
3164 down to the template encoder.
3167 *) Let 'openssl req' fail if an argument to '-newkey' is not
3168 recognized instead of using RSA as a default.
3171 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3172 As these are not official, they are not included in "ALL";
3173 the "ECCdraft" ciphersuite group alias can be used to select them.
3174 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3176 *) Add ECDH engine support.
3177 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3179 *) Add ECDH in new directory crypto/ecdh/.
3180 [Douglas Stebila (Sun Microsystems Laboratories)]
3182 *) Let BN_rand_range() abort with an error after 100 iterations
3183 without success (which indicates a broken PRNG).
3186 *) Change BN_mod_sqrt() so that it verifies that the input value
3187 is really the square of the return value. (Previously,
3188 BN_mod_sqrt would show GIGO behaviour.)
3191 *) Add named elliptic curves over binary fields from X9.62, SECG,
3192 and WAP/WTLS; add OIDs that were still missing.
3194 [Sheueling Chang Shantz and Douglas Stebila
3195 (Sun Microsystems Laboratories)]
3197 *) Extend the EC library for elliptic curves over binary fields
3198 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3201 EC_GF2m_simple_method
3205 EC_GROUP_new_curve_GF2m
3206 EC_GROUP_set_curve_GF2m
3207 EC_GROUP_get_curve_GF2m
3208 EC_POINT_set_affine_coordinates_GF2m
3209 EC_POINT_get_affine_coordinates_GF2m
3210 EC_POINT_set_compressed_coordinates_GF2m
3212 Point compression for binary fields is disabled by default for
3213 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3216 As binary polynomials are represented as BIGNUMs, various members
3217 of the EC_GROUP and EC_POINT data structures can be shared
3218 between the implementations for prime fields and binary fields;
3219 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3220 are essentially identical to their ..._GFp counterparts.
3221 (For simplicity, the '..._GFp' prefix has been dropped from
3222 various internal method names.)
3224 An internal 'field_div' method (similar to 'field_mul' and
3225 'field_sqr') has been added; this is used only for binary fields.
3227 [Sheueling Chang Shantz and Douglas Stebila
3228 (Sun Microsystems Laboratories)]
3230 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3231 through methods ('mul', 'precompute_mult').
3233 The generic implementations (now internally called 'ec_wNAF_mul'
3234 and 'ec_wNAF_precomputed_mult') remain the default if these
3235 methods are undefined.
3237 [Sheueling Chang Shantz and Douglas Stebila
3238 (Sun Microsystems Laboratories)]
3240 *) New function EC_GROUP_get_degree, which is defined through
3241 EC_METHOD. For curves over prime fields, this returns the bit
3242 length of the modulus.
3244 [Sheueling Chang Shantz and Douglas Stebila
3245 (Sun Microsystems Laboratories)]
3247 *) New functions EC_GROUP_dup, EC_POINT_dup.
3248 (These simply call ..._new and ..._copy).
3250 [Sheueling Chang Shantz and Douglas Stebila
3251 (Sun Microsystems Laboratories)]
3253 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3254 Polynomials are represented as BIGNUMs (where the sign bit is not
3255 used) in the following functions [macros]:
3258 BN_GF2m_sub [= BN_GF2m_add]
3259 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3260 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3261 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3263 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3264 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3265 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3266 BN_GF2m_cmp [= BN_ucmp]
3268 (Note that only the 'mod' functions are actually for fields GF(2^m).
3269 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3271 For some functions, an the irreducible polynomial defining a
3272 field can be given as an 'unsigned int[]' with strictly
3273 decreasing elements giving the indices of those bits that are set;
3274 i.e., p[] represents the polynomial
3275 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3277 p[0] > p[1] > ... > p[k] = 0.
3278 This applies to the following functions:
3283 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3284 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3286 BN_GF2m_mod_sqrt_arr
3287 BN_GF2m_mod_solve_quad_arr
3291 Conversion can be performed by the following functions:
3296 bntest.c has additional tests for binary polynomial arithmetic.
3298 Two implementations for BN_GF2m_mod_div() are available.
3299 The default algorithm simply uses BN_GF2m_mod_inv() and
3300 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3301 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3302 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3304 [Sheueling Chang Shantz and Douglas Stebila
3305 (Sun Microsystems Laboratories)]
3307 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3308 functionality is disabled at compile-time.
3309 [Douglas Stebila <douglas.stebila@sun.com>]
3311 *) Change default behaviour of 'openssl asn1parse' so that more
3312 information is visible when viewing, e.g., a certificate:
3314 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3315 mode the content of non-printable OCTET STRINGs is output in a
3316 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3317 avoid the appearance of a printable string.
3318 [Nils Larsch <nla@trustcenter.de>]
3320 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3322 EC_GROUP_set_asn1_flag()
3323 EC_GROUP_get_asn1_flag()
3324 EC_GROUP_set_point_conversion_form()
3325 EC_GROUP_get_point_conversion_form()
3326 These control ASN1 encoding details:
3327 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3328 has been set to OPENSSL_EC_NAMED_CURVE.
3329 - Points are encoded in uncompressed form by default; options for
3330 asn1_for are as for point2oct, namely
3331 POINT_CONVERSION_COMPRESSED
3332 POINT_CONVERSION_UNCOMPRESSED
3333 POINT_CONVERSION_HYBRID
3335 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3338 EC_GROUP_get0_seed()
3339 EC_GROUP_get_seed_len()
3340 This is used only for ASN1 purposes (so far).
3341 [Nils Larsch <nla@trustcenter.de>]
3343 *) Add 'field_type' member to EC_METHOD, which holds the NID
3344 of the appropriate field type OID. The new function
3345 EC_METHOD_get_field_type() returns this value.
3346 [Nils Larsch <nla@trustcenter.de>]
3351 EC_POINT_point2hex()
3352 EC_POINT_hex2point()
3353 providing useful interfaces to EC_POINT_point2oct() and
3354 EC_POINT_oct2point().
3355 [Nils Larsch <nla@trustcenter.de>]
3357 *) Change internals of the EC library so that the functions
3358 EC_GROUP_set_generator()
3359 EC_GROUP_get_generator()
3360 EC_GROUP_get_order()
3361 EC_GROUP_get_cofactor()
3362 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3363 to methods, which would lead to unnecessary code duplication when
3364 adding different types of curves.
3365 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3367 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3368 arithmetic, and such that modified wNAFs are generated
3369 (which avoid length expansion in many cases).
3372 *) Add a function EC_GROUP_check_discriminant() (defined via
3373 EC_METHOD) that verifies that the curve discriminant is non-zero.
3375 Add a function EC_GROUP_check() that makes some sanity tests
3376 on a EC_GROUP, its generator and order. This includes
3377 EC_GROUP_check_discriminant().
3378 [Nils Larsch <nla@trustcenter.de>]
3380 *) Add ECDSA in new directory crypto/ecdsa/.
3382 Add applications 'openssl ecparam' and 'openssl ecdsa'
3383 (these are based on 'openssl dsaparam' and 'openssl dsa').
3385 ECDSA support is also included in various other files across the
3386 library. Most notably,
3387 - 'openssl req' now has a '-newkey ecdsa:file' option;
3388 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3389 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3390 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3391 them suitable for ECDSA where domain parameters must be
3392 extracted before the specific public key;
3393 - ECDSA engine support has been added.
3394 [Nils Larsch <nla@trustcenter.de>]
3396 *) Include some named elliptic curves, and add OIDs from X9.62,
3397 SECG, and WAP/WTLS. Each curve can be obtained from the new
3399 EC_GROUP_new_by_curve_name(),
3400 and the list of available named curves can be obtained with
3401 EC_get_builtin_curves().
3402 Also add a 'curve_name' member to EC_GROUP objects, which can be
3404 EC_GROUP_set_curve_name()
3405 EC_GROUP_get_curve_name()
3406 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3408 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3409 was actually never needed) and in BN_mul(). The removal in BN_mul()
3410 required a small change in bn_mul_part_recursive() and the addition
3411 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3412 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3413 bn_sub_words() and bn_add_words() except they take arrays with
3417 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3419 *) Cleanse PEM buffers before freeing them since they may contain
3421 [Benjamin Bennett <ben@psc.edu>]
3423 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3424 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3425 authentication-only ciphersuites.
3428 *) Since AES128 and AES256 share a single mask bit in the logic of
3429 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3430 kludge to work properly if AES128 is available and AES256 isn't.
3433 *) Expand security boundary to match 1.1.1 module.
3436 *) Remove redundant features: hash file source, editing of test vectors
3437 modify fipsld to use external fips_premain.c signature.
3440 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3441 run algorithm test programs.
3444 *) Make algorithm test programs more tolerant of whitespace.
3447 *) Have SSL/TLS server implementation tolerate "mismatched" record
3448 protocol version while receiving ClientHello even if the
3449 ClientHello is fragmented. (The server can't insist on the
3450 particular protocol version it has chosen before the ServerHello
3451 message has informed the client about his choice.)
3454 *) Load error codes if they are not already present instead of using a
3455 static variable. This allows them to be cleanly unloaded and reloaded.
3458 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3460 *) Introduce limits to prevent malicious keys being able to
3461 cause a denial of service. (CVE-2006-2940)
3462 [Steve Henson, Bodo Moeller]
3464 *) Fix ASN.1 parsing of certain invalid structures that can result
3465 in a denial of service. (CVE-2006-2937) [Steve Henson]
3467 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3468 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3470 *) Fix SSL client code which could crash if connecting to a
3471 malicious SSLv2 server. (CVE-2006-4343)
3472 [Tavis Ormandy and Will Drewry, Google Security Team]
3474 *) Change ciphersuite string processing so that an explicit
3475 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3476 will no longer include "AES128-SHA"), and any other similar
3477 ciphersuite (same bitmap) from *other* protocol versions (so that
3478 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3479 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3480 changes from 0.9.8b and 0.9.8d.
3483 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3485 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3486 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3488 *) Change the Unix randomness entropy gathering to use poll() when
3489 possible instead of select(), since the latter has some
3490 undesirable limitations.
3491 [Darryl Miles via Richard Levitte and Bodo Moeller]
3493 *) Disable rogue ciphersuites:
3495 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3496 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3497 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3499 The latter two were purportedly from
3500 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3503 Also deactive the remaining ciphersuites from
3504 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3505 unofficial, and the ID has long expired.
3508 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3509 dual-core machines) and other potential thread-safety issues.
3512 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3514 *) Adapt fipsld and the build system to link against the validated FIPS
3515 module in FIPS mode.
3518 *) Fixes for VC++ 2005 build under Windows.
3521 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3522 from a Windows bash shell such as MSYS. It is autodetected from the
3523 "config" script when run from a VC++ environment. Modify standard VC++
3524 build to use fipscanister.o from the GNU make build.
3527 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3529 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3530 The value now differs depending on if you build for FIPS or not.
3531 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3532 safely run with a non-FIPSed libcrypto, as it may crash because of
3533 the difference induced by this change.
3536 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3538 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3539 (part of SSL_OP_ALL). This option used to disable the
3540 countermeasure against man-in-the-middle protocol-version
3541 rollback in the SSL 2.0 server implementation, which is a bad
3542 idea. (CVE-2005-2969)
3544 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3545 for Information Security, National Institute of Advanced Industrial
3546 Science and Technology [AIST], Japan)]
3548 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3549 mainly for FIPS compliance and not fully integrated at this stage.
3552 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3553 the exponentiation using a fixed-length exponent. (Otherwise,
3554 the information leaked through timing could expose the secret key
3555 after many signatures; cf. Bleichenbacher's attack on DSA with
3559 *) Make a new fixed-window mod_exp implementation the default for
3560 RSA, DSA, and DH private-key operations so that the sequence of
3561 squares and multiplies and the memory access pattern are
3562 independent of the particular secret key. This will mitigate
3563 cache-timing and potential related attacks.
3565 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3566 and this is automatically used by BN_mod_exp_mont() if the new flag
3567 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3568 will use this BN flag for private exponents unless the flag
3569 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3570 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3572 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3574 *) Change the client implementation for SSLv23_method() and
3575 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3576 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3577 (Previously, the SSL 2.0 backwards compatible Client Hello
3578 message format would be used even with SSL_OP_NO_SSLv2.)
3581 *) Add support for smime-type MIME parameter in S/MIME messages which some
3585 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3586 a threadsafe manner. Modify rsa code to use new function and add calls
3587 to dsa and dh code (which had race conditions before).
3590 *) Include the fixed error library code in the C error file definitions
3591 instead of fixing them up at runtime. This keeps the error code
3592 structures constant.
3595 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3597 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3600 *) Fixes for newer kerberos headers. NB: the casts are needed because
3601 the 'length' field is signed on one version and unsigned on another
3602 with no (?) obvious way to tell the difference, without these VC++
3603 complains. Also the "definition" of FAR (blank) is no longer included
3604 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3605 some needed definitions.
3608 *) Undo Cygwin change.
3611 *) Added support for proxy certificates according to RFC 3820.
3612 Because they may be a security thread to unaware applications,
3613 they must be explicitely allowed in run-time. See
3614 docs/HOWTO/proxy_certificates.txt for further information.
3617 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3619 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3620 server and client random values. Previously
3621 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3622 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3624 This change has negligible security impact because:
3626 1. Server and client random values still have 24 bytes of pseudo random
3629 2. Server and client random values are sent in the clear in the initial
3632 3. The master secret is derived using the premaster secret (48 bytes in
3633 size for static RSA ciphersuites) as well as client server and random
projects / openssl.git / blob