5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Experimental encrypt-then-mac support.
9 Experimental support for encrypt then mac from
10 draft-gutmann-tls-encrypt-then-mac-02.txt
12 To enable it set the appropriate extension number (0x10 for the test
13 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x10
15 For non-compliant peers (i.e. just about everything) this should have no
18 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
20 NOTE: unfortunately the test server value (0x10) clashes with the draft
21 ALPN extension. Until this is resolved the only way to check against the
22 test server is to temporarily change the ALPN extension value (ugh!).
26 *) Add callbacks supporting generation and retrieval of supplemental
28 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
30 *) Add EVP support for key wrapping algorithms, to avoid problems with
31 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
32 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
33 algorithms and include tests cases.
36 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
40 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
41 MGF1 digest and OAEP label.
44 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
45 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
46 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
49 *) Make openssl verify return errors.
50 [Chris Palmer <palmer@google.com> and Ben Laurie]
52 *) New function ASN1_TIME_diff to calculate the difference between two
53 ASN1_TIME structures or one structure and the current time.
56 *) Update fips_test_suite to support multiple command line options. New
57 test to induce all self test errors in sequence and check expected
61 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
62 sign or verify all in one operation.
65 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
66 test programs and fips_test_suite. Includes functionality to parse
67 the minimal script output of fipsalgest.pl directly.
70 *) Add authorisation parameter to FIPS_module_mode_set().
73 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
76 *) Use separate DRBG fields for internal and external flags. New function
77 FIPS_drbg_health_check() to perform on demand health checking. Add
78 generation tests to fips_test_suite with reduced health check interval to
79 demonstrate periodic health checking. Add "nodh" option to
80 fips_test_suite to skip very slow DH test.
83 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
87 *) More extensive health check for DRBG checking many more failure modes.
88 New function FIPS_selftest_drbg_all() to handle every possible DRBG
89 combination: call this in fips_test_suite.
92 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
93 and POST to handle Dual EC cases.
96 *) Add support for canonical generation of DSA parameter 'g'. See
99 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
100 POST to handle HMAC cases.
103 *) Add functions FIPS_module_version() and FIPS_module_version_text()
104 to return numerical and string versions of the FIPS module number.
107 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
108 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
109 outside the validated module in the FIPS capable OpenSSL.
112 *) Minor change to DRBG entropy callback semantics. In some cases
113 there is no multiple of the block length between min_len and
114 max_len. Allow the callback to return more than max_len bytes
115 of entropy but discard any extra: it is the callback's responsibility
116 to ensure that the extra data discarded does not impact the
117 requested amount of entropy.
120 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
121 information in FIPS186-3, SP800-57 and SP800-131A.
124 *) CCM support via EVP. Interface is very similar to GCM case except we
125 must supply all data in one chunk (i.e. no update, final) and the
126 message length must be supplied if AAD is used. Add algorithm test
130 *) Initial version of POST overhaul. Add POST callback to allow the status
131 of POST to be monitored and/or failures induced. Modify fips_test_suite
132 to use callback. Always run all selftests even if one fails.
135 *) XTS support including algorithm test driver in the fips_gcmtest program.
136 Note: this does increase the maximum key length from 32 to 64 bytes but
137 there should be no binary compatibility issues as existing applications
138 will never use XTS mode.
141 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
142 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
143 performs algorithm blocking for unapproved PRNG types. Also do not
144 set PRNG type in FIPS_mode_set(): leave this to the application.
145 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
146 the standard OpenSSL PRNG: set additional data to a date time vector.
149 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
150 This shouldn't present any incompatibility problems because applications
151 shouldn't be using these directly and any that are will need to rethink
152 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
155 *) Extensive self tests and health checking required by SP800-90 DRBG.
156 Remove strength parameter from FIPS_drbg_instantiate and always
157 instantiate at maximum supported strength.
160 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
163 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
166 *) New function DH_compute_key_padded() to compute a DH key and pad with
167 leading zeroes if needed: this complies with SP800-56A et al.
170 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
171 anything, incomplete, subject to change and largely untested at present.
174 *) Modify fipscanisteronly build option to only build the necessary object
175 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
178 *) Add experimental option FIPSSYMS to give all symbols in
179 fipscanister.o and FIPS or fips prefix. This will avoid
180 conflicts with future versions of OpenSSL. Add perl script
181 util/fipsas.pl to preprocess assembly language source files
182 and rename any affected symbols.
185 *) Add selftest checks and algorithm block of non-fips algorithms in
186 FIPS mode. Remove DES2 from selftests.
189 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
190 return internal method without any ENGINE dependencies. Add new
191 tiny fips sign and verify functions.
194 *) New build option no-ec2m to disable characteristic 2 code.
197 *) New build option "fipscanisteronly". This only builds fipscanister.o
198 and (currently) associated fips utilities. Uses the file Makefile.fips
199 instead of Makefile.org as the prototype.
202 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
203 Update fips_gcmtest to use IV generator.
206 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
207 setting output buffer to NULL. The *Final function must be
208 called although it will not retrieve any additional data. The tag
209 can be set or retrieved with a ctrl. The IV length is by default 12
210 bytes (96 bits) but can be set to an alternative value. If the IV
211 length exceeds the maximum IV length (currently 16 bytes) it cannot be
215 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
216 underlying do_cipher function handles all cipher semantics itself
217 including padding and finalisation. This is useful if (for example)
218 an ENGINE cipher handles block padding itself. The behaviour of
219 do_cipher is subtly changed if this flag is set: the return value
220 is the number of characters written to the output buffer (zero is
221 no longer an error code) or a negative error code. Also if the
222 input buffer is NULL and length 0 finalisation should be performed.
225 *) If a candidate issuer certificate is already part of the constructed
226 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
229 *) Improve forward-security support: add functions
231 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
232 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
234 for use by SSL/TLS servers; the callback function will be called whenever a
235 new session is created, and gets to decide whether the session may be
236 cached to make it resumable (return 0) or not (return 1). (As by the
237 SSL/TLS protocol specifications, the session_id sent by the server will be
238 empty to indicate that the session is not resumable; also, the server will
239 not generate RFC 4507 (RFC 5077) session tickets.)
241 A simple reasonable callback implementation is to return is_forward_secure.
242 This parameter will be set to 1 or 0 depending on the ciphersuite selected
243 by the SSL/TLS server library, indicating whether it can provide forward
245 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
247 *) New -verify_name option in command line utilities to set verification
251 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
252 Add CMAC pkey methods.
255 *) Experimental regnegotiation in s_server -www mode. If the client
256 browses /reneg connection is renegotiated. If /renegcert it is
257 renegotiated requesting a certificate.
260 *) Add an "external" session cache for debugging purposes to s_server. This
261 should help trace issues which normally are only apparent in deployed
262 multi-process servers.
265 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
266 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
267 BIO_set_cipher() and some obscure PEM functions were changed so they
268 can now return an error. The RAND changes required a change to the
269 RAND_METHOD structure.
272 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
273 a gcc attribute to warn if the result of a function is ignored. This
274 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
275 whose return value is often ignored.
278 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
280 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
281 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
282 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
283 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
284 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
285 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
286 [Rob Stradling, Adam Langley]
288 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
289 difference in days and seconds between two tm or ASN1_TIME structures.
292 *) Add -rev test option to s_server to just reverse order of characters
293 received by client and send back to server. Also prints an abbreviated
294 summary of the connection parameters.
297 *) New option -brief for s_client and s_server to print out a brief summary
298 of connection parameters.
301 *) Add callbacks for arbitrary TLS extensions.
302 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
304 *) New option -crl_download in several openssl utilities to download CRLs
305 from CRLDP extension in certificates.
308 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
311 *) New function X509_CRL_diff to generate a delta CRL from the difference
312 of two full CRLs. Add support to "crl" utility.
315 *) New functions to set lookup_crls function and to retrieve
316 X509_STORE from X509_STORE_CTX.
319 *) Print out deprecated issuer and subject unique ID fields in
323 *) Extend OCSP I/O functions so they can be used for simple general purpose
324 HTTP as well as OCSP. New wrapper function which can be used to download
325 CRLs using the OCSP API.
328 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
331 *) SSL_CONF* functions. These provide a common framework for application
332 configuration using configuration files or command lines.
335 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
336 message callback and prints the results. Needs compile time option
337 "enable-ssl-trace". New options to s_client and s_server to enable
341 *) New ctrl and macro to retrieve supported points extensions.
342 Print out extension in s_server and s_client.
345 *) New functions to retrieve certificate signature and signature
349 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
353 *) New Suite B modes for TLS code. These use and enforce the requirements
354 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
355 only use Suite B curves. The Suite B modes can be set by using the
356 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
359 *) New chain verification flags for Suite B levels of security. Check
360 algorithms are acceptable when flags are set in X509_verify_cert.
363 *) Make tls1_check_chain return a set of flags indicating checks passed
364 by a certificate chain. Add additional tests to handle client
365 certificates: checks for matching certificate type and issuer name
369 *) If an attempt is made to use a signature algorithm not in the peer
370 preference list abort the handshake. If client has no suitable
371 signature algorithms in response to a certificate request do not
375 *) If server EC tmp key is not in client preference list abort handshake.
378 *) Add support for certificate stores in CERT structure. This makes it
379 possible to have different stores per SSL structure or one store in
380 the parent SSL_CTX. Include distint stores for certificate chain
381 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
382 to build and store a certificate chain in CERT structure: returing
383 an error if the chain cannot be built: this will allow applications
384 to test if a chain is correctly configured.
386 Note: if the CERT based stores are not set then the parent SSL_CTX
387 store is used to retain compatibility with existing behaviour.
391 *) New function ssl_set_client_disabled to set a ciphersuite disabled
392 mask based on the current session, check mask when sending client
393 hello and checking the requested ciphersuite.
396 *) New ctrls to retrieve and set certificate types in a certificate
397 request message. Print out received values in s_client. If certificate
398 types is not set with custom values set sensible values based on
399 supported signature algorithms.
402 *) Support for distinct client and server supported signature algorithms.
405 *) Add certificate callback. If set this is called whenever a certificate
406 is required by client or server. An application can decide which
407 certificate chain to present based on arbitrary criteria: for example
408 supported signature algorithms. Add very simple example to s_server.
409 This fixes many of the problems and restrictions of the existing client
410 certificate callback: for example you can now clear an existing
411 certificate and specify the whole chain.
414 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
415 the certificate can be used for (if anything). Set valid_flags field
416 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
417 to have similar checks in it.
419 Add new "cert_flags" field to CERT structure and include a "strict mode".
420 This enforces some TLS certificate requirements (such as only permitting
421 certificate signature algorithms contained in the supported algorithms
422 extension) which some implementations ignore: this option should be used
423 with caution as it could cause interoperability issues.
426 *) Update and tidy signature algorithm extension processing. Work out
427 shared signature algorithms based on preferences and peer algorithms
428 and print them out in s_client and s_server. Abort handshake if no
429 shared signature algorithms.
432 *) Add new functions to allow customised supported signature algorithms
433 for SSL and SSL_CTX structures. Add options to s_client and s_server
437 *) New function SSL_certs_clear() to delete all references to certificates
438 from an SSL structure. Before this once a certificate had been added
439 it couldn't be removed.
442 *) Integrate hostname, email address and IP address checking with certificate
443 verification. New verify options supporting checking in opensl utility.
446 *) Fixes and wildcard matching support to hostname and email checking
447 functions. Add manual page.
448 [Florian Weimer (Red Hat Product Security Team)]
450 *) New functions to check a hostname email or IP address against a
451 certificate. Add options x509 utility to print results of checks against
455 *) Fix OCSP checking.
456 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
458 *) Initial experimental support for explicitly trusted non-root CAs.
459 OpenSSL still tries to build a complete chain to a root but if an
460 intermediate CA has a trust setting included that is used. The first
461 setting is used: whether to trust (e.g., -addtrust option to the x509
465 *) Add -trusted_first option which attempts to find certificates in the
466 trusted store even if an untrusted chain is also supplied.
469 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
470 platform support for Linux and Android.
473 *) Support for linux-x32, ILP32 environment in x86_64 framework.
476 *) RFC 5878 (TLS Authorization Extensions) support.
477 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
479 *) Experimental multi-implementation support for FIPS capable OpenSSL.
480 When in FIPS mode the approved implementations are used as normal,
481 when not in FIPS mode the internal unapproved versions are used instead.
482 This means that the FIPS capable OpenSSL isn't forced to use the
483 (often lower perfomance) FIPS implementations outside FIPS mode.
486 *) Transparently support X9.42 DH parameters when calling
487 PEM_read_bio_DHparameters. This means existing applications can handle
488 the new parameter format automatically.
491 *) Initial experimental support for X9.42 DH parameter format: mainly
492 to support use of 'q' parameter for RFC5114 parameters.
495 *) Add DH parameters from RFC5114 including test data to dhtest.
498 *) Support for automatic EC temporary key parameter selection. If enabled
499 the most preferred EC parameters are automatically used instead of
500 hardcoded fixed parameters. Now a server just has to call:
501 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
502 support ECDH and use the most appropriate parameters.
505 *) Enhance and tidy EC curve and point format TLS extension code. Use
506 static structures instead of allocation if default values are used.
507 New ctrls to set curves we wish to support and to retrieve shared curves.
508 Print out shared curves in s_server. New options to s_server and s_client
509 to set list of supported curves.
512 *) New ctrls to retrieve supported signature algorithms and
513 supported curve values as an array of NIDs. Extend openssl utility
514 to print out received values.
517 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
518 between NIDs and the more common NIST names such as "P-256". Enhance
519 ecparam utility and ECC method to recognise the NIST names for curves.
522 *) Enhance SSL/TLS certificate chain handling to support different
523 chains for each certificate instead of one chain in the parent SSL_CTX.
526 *) Support for fixed DH ciphersuite client authentication: where both
527 server and client use DH certificates with common parameters.
530 *) Support for fixed DH ciphersuites: those requiring DH server
534 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
536 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
537 supporting platforms or when small records were transferred.
538 [Andy Polyakov, Steve Henson]
540 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
542 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
544 This addresses the flaw in CBC record processing discovered by
545 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
546 at: http://www.isg.rhul.ac.uk/tls/
548 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
549 Security Group at Royal Holloway, University of London
550 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
551 Emilia Käsper for the initial patch.
553 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
555 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
556 ciphersuites which can be exploited in a denial of service attack.
557 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
558 and detecting this bug and to Wolfgang Ettlinger
559 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
563 *) Return an error when checking OCSP signatures when key is NULL.
564 This fixes a DoS attack. (CVE-2013-0166)
567 *) Make openssl verify return errors.
568 [Chris Palmer <palmer@google.com> and Ben Laurie]
570 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
571 the right response is stapled. Also change SSL_get_certificate()
572 so it returns the certificate actually sent.
573 See http://rt.openssl.org/Ticket/Display.html?id=2836.
574 [Rob Stradling <rob.stradling@comodo.com>]
576 *) Fix possible deadlock when decoding public keys.
579 *) Don't use TLS 1.0 record version number in initial client hello
583 Changes between 1.0.1b and 1.0.1c [10 May 2012]
585 *) Sanity check record length before skipping explicit IV in TLS
586 1.2, 1.1 and DTLS to fix DoS attack.
588 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
589 fuzzing as a service testing platform.
593 *) Initialise tkeylen properly when encrypting CMS messages.
594 Thanks to Solar Designer of Openwall for reporting this issue.
597 *) In FIPS mode don't try to use composite ciphers as they are not
601 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
603 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
604 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
605 mean any application compiled against OpenSSL 1.0.0 headers setting
606 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
607 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
608 0x10000000L Any application which was previously compiled against
609 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
610 will need to be recompiled as a result. Letting be results in
611 inability to disable specifically TLS 1.1 and in client context,
612 in unlike event, limit maximum offered version to TLS 1.0 [see below].
615 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
616 disable just protocol X, but all protocols above X *if* there are
617 protocols *below* X still enabled. In more practical terms it means
618 that if application wants to disable TLS1.0 in favor of TLS1.1 and
619 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
620 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
624 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
626 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
627 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
628 in CRYPTO_realloc_clean.
630 Thanks to Tavis Ormandy, Google Security Team, for discovering this
631 issue and to Adam Langley <agl@chromium.org> for fixing it.
633 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
635 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
638 *) Workarounds for some broken servers that "hang" if a client hello
639 record length exceeds 255 bytes.
641 1. Do not use record version number > TLS 1.0 in initial client
642 hello: some (but not all) hanging servers will now work.
643 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
644 the number of ciphers sent in the client hello. This should be
645 set to an even number, such as 50, for example by passing:
646 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
647 Most broken servers should now work.
648 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
649 TLS 1.2 client support entirely.
652 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
655 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
657 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
658 STRING form instead of a DigestInfo.
661 *) The format used for MDC2 RSA signatures is inconsistent between EVP
662 and the RSA_sign/RSA_verify functions. This was made more apparent when
663 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
664 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
665 the correct format in RSA_verify so both forms transparently work.
668 *) Some servers which support TLS 1.0 can choke if we initially indicate
669 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
670 encrypted premaster secret. As a workaround use the maximum pemitted
671 client version in client hello, this should keep such servers happy
672 and still work with previous versions of OpenSSL.
675 *) Add support for TLS/DTLS heartbeats.
676 [Robin Seggelmann <seggelmann@fh-muenster.de>]
678 *) Add support for SCTP.
679 [Robin Seggelmann <seggelmann@fh-muenster.de>]
681 *) Improved PRNG seeding for VOS.
682 [Paul Green <Paul.Green@stratus.com>]
684 *) Extensive assembler packs updates, most notably:
686 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
687 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
688 - x86_64: bit-sliced AES implementation;
689 - ARM: NEON support, contemporary platforms optimizations;
690 - s390x: z196 support;
691 - *: GHASH and GF(2^m) multiplication implementations;
695 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
696 (removal of unnecessary code)
697 [Peter Sylvester <peter.sylvester@edelweb.fr>]
699 *) Add TLS key material exporter from RFC 5705.
702 *) Add DTLS-SRTP negotiation from RFC 5764.
705 *) Add Next Protocol Negotiation,
706 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
707 disabled with a no-npn flag to config or Configure. Code donated
709 [Adam Langley <agl@google.com> and Ben Laurie]
711 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
712 NIST-P256, NIST-P521, with constant-time single point multiplication on
713 typical inputs. Compiler support for the nonstandard type __uint128_t is
714 required to use this (present in gcc 4.4 and later, for 64-bit builds).
715 Code made available under Apache License version 2.0.
717 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
718 line to include this in your build of OpenSSL, and run "make depend" (or
719 "make update"). This enables the following EC_METHODs:
721 EC_GFp_nistp224_method()
722 EC_GFp_nistp256_method()
723 EC_GFp_nistp521_method()
725 EC_GROUP_new_by_curve_name() will automatically use these (while
726 EC_GROUP_new_curve_GFp() currently prefers the more flexible
728 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
730 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
731 all platforms. Move ssize_t definition from e_os.h to the public
732 header file e_os2.h as it now appears in public header file cms.h
735 *) New -sigopt option to the ca, req and x509 utilities. Additional
736 signature parameters can be passed using this option and in
740 *) Add RSA PSS signing function. This will generate and set the
741 appropriate AlgorithmIdentifiers for PSS based on those in the
742 corresponding EVP_MD_CTX structure. No application support yet.
745 *) Support for companion algorithm specific ASN1 signing routines.
746 New function ASN1_item_sign_ctx() signs a pre-initialised
747 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
748 the appropriate parameters.
751 *) Add new algorithm specific ASN1 verification initialisation function
752 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
753 handling will be the same no matter what EVP_PKEY_METHOD is used.
754 Add a PSS handler to support verification of PSS signatures: checked
755 against a number of sample certificates.
758 *) Add signature printing for PSS. Add PSS OIDs.
759 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
761 *) Add algorithm specific signature printing. An individual ASN1 method
762 can now print out signatures instead of the standard hex dump.
764 More complex signatures (e.g. PSS) can print out more meaningful
765 information. Include DSA version that prints out the signature
769 *) Password based recipient info support for CMS library: implementing
773 *) Split password based encryption into PBES2 and PBKDF2 functions. This
774 neatly separates the code into cipher and PBE sections and is required
775 for some algorithms that split PBES2 into separate pieces (such as
779 *) Session-handling fixes:
780 - Fix handling of connections that are resuming with a session ID,
781 but also support Session Tickets.
782 - Fix a bug that suppressed issuing of a new ticket if the client
783 presented a ticket with an expired session.
784 - Try to set the ticket lifetime hint to something reasonable.
785 - Make tickets shorter by excluding irrelevant information.
786 - On the client side, don't ignore renewed tickets.
787 [Adam Langley, Bodo Moeller (Google)]
789 *) Fix PSK session representation.
792 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
794 This work was sponsored by Intel.
797 *) Add GCM support to TLS library. Some custom code is needed to split
798 the IV between the fixed (from PRF) and explicit (from TLS record)
799 portions. This adds all GCM ciphersuites supported by RFC5288 and
800 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
801 add a special AESGCM string for GCM only.
804 *) Expand range of ctrls for AES GCM. Permit setting invocation
805 field on decrypt and retrieval of invocation field only on encrypt.
808 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
809 As required by RFC5289 these ciphersuites cannot be used if for
810 versions of TLS earlier than 1.2.
813 *) For FIPS capable OpenSSL interpret a NULL default public key method
814 as unset and return the appopriate default but do *not* set the default.
815 This means we can return the appopriate method in applications that
816 swicth between FIPS and non-FIPS modes.
819 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
820 ENGINE is used then we cannot handle that in the FIPS module so we
821 keep original code iff non-FIPS operations are allowed.
824 *) Add -attime option to openssl utilities.
825 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
827 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
830 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
831 FIPS EC methods unconditionally for now.
834 *) New build option no-ec2m to disable characteristic 2 code.
837 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
838 all cases can be covered as some introduce binary incompatibilities.
841 *) Redirect RSA operations to FIPS module including keygen,
842 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
845 *) Add similar low level API blocking to ciphers.
848 *) Low level digest APIs are not approved in FIPS mode: any attempt
849 to use these will cause a fatal error. Applications that *really* want
850 to use them can use the private_* version instead.
853 *) Redirect cipher operations to FIPS module for FIPS builds.
856 *) Redirect digest operations to FIPS module for FIPS builds.
859 *) Update build system to add "fips" flag which will link in fipscanister.o
860 for static and shared library builds embedding a signature if needed.
863 *) Output TLS supported curves in preference order instead of numerical
864 order. This is currently hardcoded for the highest order curves first.
865 This should be configurable so applications can judge speed vs strength.
868 *) Add TLS v1.2 server support for client authentication.
871 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
875 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
876 FIPS modules versions.
879 *) Add TLS v1.2 client side support for client authentication. Keep cache
880 of handshake records longer as we don't know the hash algorithm to use
881 until after the certificate request message is received.
884 *) Initial TLS v1.2 client support. Add a default signature algorithms
885 extension including all the algorithms we support. Parse new signature
886 format in client key exchange. Relax some ECC signing restrictions for
887 TLS v1.2 as indicated in RFC5246.
890 *) Add server support for TLS v1.2 signature algorithms extension. Switch
891 to new signature format when needed using client digest preference.
892 All server ciphersuites should now work correctly in TLS v1.2. No client
893 support yet and no support for client certificates.
896 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
897 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
898 ciphersuites. At present only RSA key exchange ciphersuites work with
899 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
900 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
901 and version checking.
904 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
905 with this defined it will not be affected by any changes to ssl internal
906 structures. Add several utility functions to allow openssl application
907 to work with OPENSSL_NO_SSL_INTERN defined.
911 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
913 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
916 *) Permit abbreviated handshakes when renegotiating using the function
917 SSL_renegotiate_abbreviated().
918 [Robin Seggelmann <seggelmann@fh-muenster.de>]
920 *) Add call to ENGINE_register_all_complete() to
921 ENGINE_load_builtin_engines(), so some implementations get used
922 automatically instead of needing explicit application support.
925 *) Add support for TLS key exporter as described in RFC5705.
926 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
928 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
929 a few changes are required:
931 Add SSL_OP_NO_TLSv1_1 flag.
933 Update version checking logic to handle version 1.1.
934 Add explicit IV handling (ported from DTLS code).
935 Add command line options to s_client/s_server.
938 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
940 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
942 This addresses the flaw in CBC record processing discovered by
943 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
944 at: http://www.isg.rhul.ac.uk/tls/
946 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
947 Security Group at Royal Holloway, University of London
948 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
949 Emilia Käsper for the initial patch.
951 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
953 *) Return an error when checking OCSP signatures when key is NULL.
954 This fixes a DoS attack. (CVE-2013-0166)
957 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
958 the right response is stapled. Also change SSL_get_certificate()
959 so it returns the certificate actually sent.
960 See http://rt.openssl.org/Ticket/Display.html?id=2836.
962 [Rob Stradling <rob.stradling@comodo.com>]
964 *) Fix possible deadlock when decoding public keys.
967 Changes between 1.0.0i and 1.0.0j [10 May 2012]
969 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
972 *) Sanity check record length before skipping explicit IV in DTLS
975 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
976 fuzzing as a service testing platform.
980 *) Initialise tkeylen properly when encrypting CMS messages.
981 Thanks to Solar Designer of Openwall for reporting this issue.
984 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
986 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
987 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
988 in CRYPTO_realloc_clean.
990 Thanks to Tavis Ormandy, Google Security Team, for discovering this
991 issue and to Adam Langley <agl@chromium.org> for fixing it.
993 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
995 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
997 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
998 in CMS and PKCS7 code. When RSA decryption fails use a random key for
999 content decryption and always return the same error. Note: this attack
1000 needs on average 2^20 messages so it only affects automated senders. The
1001 old behaviour can be reenabled in the CMS code by setting the
1002 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1003 an MMA defence is not necessary.
1004 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1005 this issue. (CVE-2012-0884)
1008 *) Fix CVE-2011-4619: make sure we really are receiving a
1009 client hello before rejecting multiple SGC restarts. Thanks to
1010 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1013 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1015 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1016 Thanks to Antonio Martin, Enterprise Secure Access Research and
1017 Development, Cisco Systems, Inc. for discovering this bug and
1018 preparing a fix. (CVE-2012-0050)
1021 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1023 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1024 of the Vaudenay padding oracle attack on CBC mode encryption
1025 which enables an efficient plaintext recovery attack against
1026 the OpenSSL implementation of DTLS. Their attack exploits timing
1027 differences arising during decryption processing. A research
1028 paper describing this attack can be found at:
1029 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1030 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1031 Security Group at Royal Holloway, University of London
1032 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1033 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1034 for preparing the fix. (CVE-2011-4108)
1035 [Robin Seggelmann, Michael Tuexen]
1037 *) Clear bytes used for block padding of SSL 3.0 records.
1039 [Adam Langley (Google)]
1041 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1042 Kadianakis <desnacked@gmail.com> for discovering this issue and
1043 Adam Langley for preparing the fix. (CVE-2011-4619)
1044 [Adam Langley (Google)]
1046 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1047 [Andrey Kulikov <amdeich@gmail.com>]
1049 *) Prevent malformed RFC3779 data triggering an assertion failure.
1050 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1051 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1052 [Rob Austein <sra@hactrn.net>]
1054 *) Improved PRNG seeding for VOS.
1055 [Paul Green <Paul.Green@stratus.com>]
1057 *) Fix ssl_ciph.c set-up race.
1058 [Adam Langley (Google)]
1060 *) Fix spurious failures in ecdsatest.c.
1061 [Emilia Käsper (Google)]
1063 *) Fix the BIO_f_buffer() implementation (which was mixing different
1064 interpretations of the '..._len' fields).
1065 [Adam Langley (Google)]
1067 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1068 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1069 threads won't reuse the same blinding coefficients.
1071 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1072 lock to call BN_BLINDING_invert_ex, and avoids one use of
1073 BN_BLINDING_update for each BN_BLINDING structure (previously,
1074 the last update always remained unused).
1075 [Emilia Käsper (Google)]
1077 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1078 [Bob Buckholz (Google)]
1080 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1082 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1083 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1084 [Kaspar Brand <ossl@velox.ch>]
1086 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1087 for multi-threaded use of ECDH. (CVE-2011-3210)
1088 [Adam Langley (Google)]
1090 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1093 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1094 signature public key algorithm by using OID xref utilities instead.
1095 Before this you could only use some ECC ciphersuites with SHA1 only.
1098 *) Add protection against ECDSA timing attacks as mentioned in the paper
1099 by Billy Bob Brumley and Nicola Tuveri, see:
1101 http://eprint.iacr.org/2011/232.pdf
1103 [Billy Bob Brumley and Nicola Tuveri]
1105 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1107 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1108 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1110 *) Fix bug in string printing code: if *any* escaping is enabled we must
1111 escape the escape character (backslash) or the resulting string is
1115 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1117 *) Disable code workaround for ancient and obsolete Netscape browsers
1118 and servers: an attacker can use it in a ciphersuite downgrade attack.
1119 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1122 *) Fixed J-PAKE implementation error, originally discovered by
1123 Sebastien Martini, further info and confirmation from Stefan
1124 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1127 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1129 *) Fix extension code to avoid race conditions which can result in a buffer
1130 overrun vulnerability: resumed sessions must not be modified as they can
1131 be shared by multiple threads. CVE-2010-3864
1134 *) Fix WIN32 build system to correctly link an ENGINE directory into
1138 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1140 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1142 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1144 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1146 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1147 context. The operation can be customised via the ctrl mechanism in
1148 case ENGINEs want to include additional functionality.
1151 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1154 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1155 output hashes compatible with older versions of OpenSSL.
1156 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1158 *) Fix compression algorithm handling: if resuming a session use the
1159 compression algorithm of the resumed session instead of determining
1160 it from client hello again. Don't allow server to change algorithm.
1163 *) Add load_crls() function to apps tidying load_certs() too. Add option
1164 to verify utility to allow additional CRLs to be included.
1167 *) Update OCSP request code to permit adding custom headers to the request:
1168 some responders need this.
1171 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1173 [Julia Lawall <julia@diku.dk>]
1175 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1176 needlessly dereferenced structures, used obsolete functions and
1177 didn't handle all updated verify codes correctly.
1180 *) Disable MD2 in the default configuration.
1183 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1184 indicate the initial BIO being pushed or popped. This makes it possible
1185 to determine whether the BIO is the one explicitly called or as a result
1186 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1187 it handles reference counts correctly and doesn't zero out the I/O bio
1188 when it is not being explicitly popped. WARNING: applications which
1189 included workarounds for the old buggy behaviour will need to be modified
1190 or they could free up already freed BIOs.
1193 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1194 renaming to all platforms (within the 0.9.8 branch, this was
1195 done conditionally on Netware platforms to avoid a name clash).
1196 [Guenter <lists@gknw.net>]
1198 *) Add ECDHE and PSK support to DTLS.
1199 [Michael Tuexen <tuexen@fh-muenster.de>]
1201 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1205 *) Add "missing" function EVP_MD_flags() (without this the only way to
1206 retrieve a digest flags is by accessing the structure directly. Update
1207 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1208 or cipher is registered as in the "from" argument. Print out all
1209 registered digests in the dgst usage message instead of manually
1210 attempting to work them out.
1213 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1214 this allows the use of compression and extensions. Change default cipher
1215 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1216 by default unless an application cipher string requests it.
1219 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1220 key ids to find matching certificates and keys but some PKCS#12 files
1221 don't follow the (somewhat unwritten) rules and this strategy fails.
1222 Now just gather all certificates together and the first private key
1223 then look for the first certificate that matches the key.
1226 *) Support use of registered digest and cipher names for dgst and cipher
1227 commands instead of having to add each one as a special case. So now
1234 openssl dgst -sha256 foo
1236 and this works for ENGINE based algorithms too.
1240 *) Update Gost ENGINE to support parameter files.
1241 [Victor B. Wagner <vitus@cryptocom.ru>]
1243 *) Support GeneralizedTime in ca utility.
1244 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1246 *) Enhance the hash format used for certificate directory links. The new
1247 form uses the canonical encoding (meaning equivalent names will work
1248 even if they aren't identical) and uses SHA1 instead of MD5. This form
1249 is incompatible with the older format and as a result c_rehash should
1250 be used to rebuild symbolic links.
1253 *) Make PKCS#8 the default write format for private keys, replacing the
1254 traditional format. This form is standardised, more secure and doesn't
1255 include an implicit MD5 dependency.
1258 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1259 committed to OpenSSL should pass this lot as a minimum.
1262 *) Add session ticket override functionality for use by EAP-FAST.
1263 [Jouni Malinen <j@w1.fi>]
1265 *) Modify HMAC functions to return a value. Since these can be implemented
1266 in an ENGINE errors can occur.
1269 *) Type-checked OBJ_bsearch_ex.
1272 *) Type-checked OBJ_bsearch. Also some constification necessitated
1273 by type-checking. Still to come: TXT_DB, bsearch(?),
1274 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1278 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1279 seconds to a tm structure directly, instead of going through OS
1280 specific date routines. This avoids any issues with OS routines such
1281 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1282 and X509_time_adj_ex() to cover the extended range. The existing
1283 X509_time_adj() is still usable and will no longer have any date issues.
1286 *) Delta CRL support. New use deltas option which will attempt to locate
1287 and search any appropriate delta CRLs available.
1289 This work was sponsored by Google.
1292 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1293 code and add additional score elements. Validate alternate CRL paths
1294 as part of the CRL checking and indicate a new error "CRL path validation
1295 error" in this case. Applications wanting additional details can use
1296 the verify callback and check the new "parent" field. If this is not
1297 NULL CRL path validation is taking place. Existing applications wont
1298 see this because it requires extended CRL support which is off by
1301 This work was sponsored by Google.
1304 *) Support for freshest CRL extension.
1306 This work was sponsored by Google.
1309 *) Initial indirect CRL support. Currently only supported in the CRLs
1310 passed directly and not via lookup. Process certificate issuer
1311 CRL entry extension and lookup CRL entries by bother issuer name
1312 and serial number. Check and process CRL issuer entry in IDP extension.
1314 This work was sponsored by Google.
1317 *) Add support for distinct certificate and CRL paths. The CRL issuer
1318 certificate is validated separately in this case. Only enabled if
1319 an extended CRL support flag is set: this flag will enable additional
1320 CRL functionality in future.
1322 This work was sponsored by Google.
1325 *) Add support for policy mappings extension.
1327 This work was sponsored by Google.
1330 *) Fixes to pathlength constraint, self issued certificate handling,
1331 policy processing to align with RFC3280 and PKITS tests.
1333 This work was sponsored by Google.
1336 *) Support for name constraints certificate extension. DN, email, DNS
1337 and URI types are currently supported.
1339 This work was sponsored by Google.
1342 *) To cater for systems that provide a pointer-based thread ID rather
1343 than numeric, deprecate the current numeric thread ID mechanism and
1344 replace it with a structure and associated callback type. This
1345 mechanism allows a numeric "hash" to be extracted from a thread ID in
1346 either case, and on platforms where pointers are larger than 'long',
1347 mixing is done to help ensure the numeric 'hash' is usable even if it
1348 can't be guaranteed unique. The default mechanism is to use "&errno"
1349 as a pointer-based thread ID to distinguish between threads.
1351 Applications that want to provide their own thread IDs should now use
1352 CRYPTO_THREADID_set_callback() to register a callback that will call
1353 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1355 Note that ERR_remove_state() is now deprecated, because it is tied
1356 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1357 to free the current thread's error state should be replaced by
1358 ERR_remove_thread_state(NULL).
1360 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1361 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1362 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1363 application was previously providing a numeric thread callback that
1364 was inappropriate for distinguishing threads, then uniqueness might
1365 have been obtained with &errno that happened immediately in the
1366 intermediate development versions of OpenSSL; this is no longer the
1367 case, the numeric thread callback will now override the automatic use
1369 [Geoff Thorpe, with help from Bodo Moeller]
1371 *) Initial support for different CRL issuing certificates. This covers a
1372 simple case where the self issued certificates in the chain exist and
1373 the real CRL issuer is higher in the existing chain.
1375 This work was sponsored by Google.
1378 *) Removed effectively defunct crypto/store from the build.
1381 *) Revamp of STACK to provide stronger type-checking. Still to come:
1382 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1383 ASN1_STRING, CONF_VALUE.
1386 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1387 RAM on SSL connections. This option can save about 34k per idle SSL.
1390 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1391 STACK, TXT_DB, bsearch, qsort.
1394 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1395 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1396 support for data, signedData, compressedData, digestedData and
1397 encryptedData, envelopedData types included. Scripts to check against
1398 RFC4134 examples draft and interop and consistency checks of many
1399 content types and variants.
1402 *) Add options to enc utility to support use of zlib compression BIO.
1405 *) Extend mk1mf to support importing of options and assembly language
1406 files from Configure script, currently only included in VC-WIN32.
1407 The assembly language rules can now optionally generate the source
1408 files from the associated perl scripts.
1411 *) Implement remaining functionality needed to support GOST ciphersuites.
1412 Interop testing has been performed using CryptoPro implementations.
1413 [Victor B. Wagner <vitus@cryptocom.ru>]
1415 *) s390x assembler pack.
1418 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1422 *) Implement Opaque PRF Input TLS extension as specified in
1423 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1424 official specification yet and no extension type assignment by
1425 IANA exists, this extension (for now) will have to be explicitly
1426 enabled when building OpenSSL by providing the extension number
1427 to use. For example, specify an option
1429 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1431 to the "config" or "Configure" script to enable the extension,
1432 assuming extension number 0x9527 (which is a completely arbitrary
1433 and unofficial assignment based on the MD5 hash of the Internet
1434 Draft). Note that by doing so, you potentially lose
1435 interoperability with other TLS implementations since these might
1436 be using the same extension number for other purposes.
1438 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1439 opaque PRF input value to use in the handshake. This will create
1440 an interal copy of the length-'len' string at 'src', and will
1441 return non-zero for success.
1443 To get more control and flexibility, provide a callback function
1446 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1447 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1451 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1454 Callback function 'cb' will be called in handshakes, and is
1455 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1456 Argument 'arg' is for application purposes (the value as given to
1457 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1458 be provided to the callback function). The callback function
1459 has to return non-zero to report success: usually 1 to use opaque
1460 PRF input just if possible, or 2 to enforce use of the opaque PRF
1461 input. In the latter case, the library will abort the handshake
1462 if opaque PRF input is not successfully negotiated.
1464 Arguments 'peerinput' and 'len' given to the callback function
1465 will always be NULL and 0 in the case of a client. A server will
1466 see the client's opaque PRF input through these variables if
1467 available (NULL and 0 otherwise). Note that if the server
1468 provides an opaque PRF input, the length must be the same as the
1469 length of the client's opaque PRF input.
1471 Note that the callback function will only be called when creating
1472 a new session (session resumption can resume whatever was
1473 previously negotiated), and will not be called in SSL 2.0
1474 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1475 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1476 for applications that need to enforce opaque PRF input.
1480 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1483 [Victor B. Wagner <vitus@cryptocom.ru>]
1485 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1486 RFC4507bis. The encrypted ticket format is an encrypted encoded
1487 SSL_SESSION structure, that way new session features are automatically
1490 If a client application caches session in an SSL_SESSION structure
1491 support is transparent because tickets are now stored in the encoded
1494 The SSL_CTX structure automatically generates keys for ticket
1495 protection in servers so again support should be possible
1496 with no application modification.
1498 If a client or server wishes to disable RFC4507 support then the option
1499 SSL_OP_NO_TICKET can be set.
1501 Add a TLS extension debugging callback to allow the contents of any client
1502 or server extensions to be examined.
1504 This work was sponsored by Google.
1507 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1508 OpenSSL should now compile cleanly on gcc 4.2
1509 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1511 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1512 support including streaming MAC support: this is required for GOST
1513 ciphersuite support.
1514 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1516 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1517 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1518 to output in BER and PEM format.
1521 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1522 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1523 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1524 ENGINE support for HMAC keys which are unextractable. New -mac and
1525 -macopt options to dgst utility.
1528 *) New option -sigopt to dgst utility. Update dgst to use
1529 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1530 alternative signing paramaters such as X9.31 or PSS in the dgst
1534 *) Change ssl_cipher_apply_rule(), the internal function that does
1535 the work each time a ciphersuite string requests enabling
1536 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1537 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1538 the order of disabled ciphersuites such that those ciphersuites
1539 that most recently went from enabled to disabled not only stay
1540 in order with respect to each other, but also have higher priority
1541 than other disabled ciphersuites the next time ciphersuites are
1544 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1545 the same ciphersuites as with "HIGH" alone, but in a specific
1546 order where the PSK ciphersuites come first (since they are the
1547 most recently disabled ciphersuites when "HIGH" is parsed).
1549 Also, change ssl_create_cipher_list() (using this new
1550 funcionality) such that between otherwise identical
1551 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1555 *) Change ssl_create_cipher_list() so that it automatically
1556 arranges the ciphersuites in reasonable order before starting
1557 to process the rule string. Thus, the definition for "DEFAULT"
1558 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1559 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1560 This makes it much easier to arrive at a reasonable default order
1561 in applications for which anonymous ciphers are OK (meaning
1562 that you can't actually use DEFAULT).
1563 [Bodo Moeller; suggested by Victor Duchovni]
1565 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1566 processing) into multiple integers instead of setting
1567 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1568 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1569 (These masks as well as the individual bit definitions are hidden
1570 away into the non-exported interface ssl/ssl_locl.h, so this
1571 change to the definition of the SSL_CIPHER structure shouldn't
1572 affect applications.) This give us more bits for each of these
1573 categories, so there is no longer a need to coagulate AES128 and
1574 AES256 into a single algorithm bit, and to coagulate Camellia128
1575 and Camellia256 into a single algorithm bit, which has led to all
1578 Thus, among other things, the kludge introduced in 0.9.7m and
1579 0.9.8e for masking out AES256 independently of AES128 or masking
1580 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1582 With the change, we also introduce new ciphersuite aliases that
1583 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1587 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1588 Use the leftmost N bytes of the signature input if the input is
1589 larger than the prime q (with N being the size in bytes of q).
1592 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1593 it yet and it is largely untested.
1596 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1599 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1600 some compilers (gcc 4.2 and later) reject their use. Safestack is
1601 reimplemented. Update ASN1 to avoid use of legacy functions.
1604 *) Win32/64 targets are linked with Winsock2.
1607 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1608 to external functions. This can be used to increase CRL handling
1609 efficiency especially when CRLs are very large by (for example) storing
1610 the CRL revoked certificates in a database.
1613 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1614 new CRLs added to a directory can be used. New command line option
1615 -verify_return_error to s_client and s_server. This causes real errors
1616 to be returned by the verify callback instead of carrying on no matter
1617 what. This reflects the way a "real world" verify callback would behave.
1620 *) GOST engine, supporting several GOST algorithms and public key formats.
1621 Kindly donated by Cryptocom.
1624 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1625 partitioned by DP are handled but no indirect CRL or reason partitioning
1626 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1627 selected via a scoring technique which handles IDP and AKID in CRLs.
1630 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1631 will ultimately be used for all verify operations: this will remove the
1632 X509_STORE dependency on certificate verification and allow alternative
1633 lookup methods. X509_STORE based implementations of these two callbacks.
1636 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1637 Modify get_crl() to find a valid (unexpired) CRL if possible.
1640 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1641 this would be called X509_CRL_cmp() but that name is already used by
1642 a function that just compares CRL issuer names. Cache several CRL
1643 extensions in X509_CRL structure and cache CRLDP in X509.
1646 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1647 this maps equivalent X509_NAME structures into a consistent structure.
1648 Name comparison can then be performed rapidly using memcmp().
1651 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1655 *) Allow digests to supply their own micalg string for S/MIME type using
1656 the ctrl EVP_MD_CTRL_MICALG.
1659 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1660 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1661 ctrl. It can then customise the structure before and/or after signing
1665 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1666 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1667 to free up any added signature OIDs.
1670 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1671 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1672 digest and cipher tables. New options added to openssl utility:
1673 list-message-digest-algorithms and list-cipher-algorithms.
1676 *) Change the array representation of binary polynomials: the list
1677 of degrees of non-zero coefficients is now terminated with -1.
1678 Previously it was terminated with 0, which was also part of the
1679 value; thus, the array representation was not applicable to
1680 polynomials where t^0 has coefficient zero. This change makes
1681 the array representation useful in a more general context.
1684 *) Various modifications and fixes to SSL/TLS cipher string
1685 handling. For ECC, the code now distinguishes between fixed ECDH
1686 with RSA certificates on the one hand and with ECDSA certificates
1687 on the other hand, since these are separate ciphersuites. The
1688 unused code for Fortezza ciphersuites has been removed.
1690 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1691 (not "ECDHE"). For consistency with the code for DH
1692 certificates, use of ECDH certificates is now considered ECDH
1693 authentication, not RSA or ECDSA authentication (the latter is
1694 merely the CA's signing algorithm and not actively used in the
1697 The temporary ciphersuite alias "ECCdraft" is no longer
1698 available, and ECC ciphersuites are no longer excluded from "ALL"
1699 and "DEFAULT". The following aliases now exist for RFC 4492
1700 ciphersuites, most of these by analogy with the DH case:
1702 kECDHr - ECDH cert, signed with RSA
1703 kECDHe - ECDH cert, signed with ECDSA
1704 kECDH - ECDH cert (signed with either RSA or ECDSA)
1705 kEECDH - ephemeral ECDH
1706 ECDH - ECDH cert or ephemeral ECDH
1712 AECDH - anonymous ECDH
1713 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1717 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1718 Use correct micalg parameters depending on digest(s) in signed message.
1721 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1722 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1725 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1726 an engine to register a method. Add ENGINE lookups for methods and
1727 functional reference processing.
1730 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1731 EVP_{Sign,Verify}* which allow an application to customise the signature
1735 *) New -resign option to smime utility. This adds one or more signers
1736 to an existing PKCS#7 signedData structure. Also -md option to use an
1737 alternative message digest algorithm for signing.
1740 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1741 create PKCS7 structures containing multiple signers. Update smime
1742 application to support multiple signers.
1745 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1749 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1750 Reorganize PBE internals to lookup from a static table using NIDs,
1751 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1752 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1753 PRF which will be automatically used with PBES2.
1756 *) Replace the algorithm specific calls to generate keys in "req" with the
1760 *) Update PKCS#7 enveloped data routines to use new API. This is now
1761 supported by any public key method supporting the encrypt operation. A
1762 ctrl is added to allow the public key algorithm to examine or modify
1763 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1767 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1768 a default digest type to use. In most cases this will be SHA1 but some
1769 algorithms (such as GOST) need to specify an alternative digest. The
1770 return value indicates how strong the prefernce is 1 means optional and
1771 2 is mandatory (that is it is the only supported type). Modify
1772 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1773 use the default md. Update openssl utilities to use the default digest
1774 type for signing if it is not explicitly indicated.
1777 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1778 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1779 signing method from the key type. This effectively removes the link
1780 between digests and public key types.
1783 *) Add an OID cross reference table and utility functions. Its purpose is to
1784 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1785 rsaEncryption. This will allow some of the algorithm specific hackery
1786 needed to use the correct OID to be removed.
1789 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1790 structures for PKCS7_sign(). They are now set up by the relevant public
1794 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1797 *) Add support for key derivation (agreement) in the API, DH method and
1801 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1802 public and private key formats. As a side effect these add additional
1803 command line functionality not previously available: DSA signatures can be
1804 generated and verified using pkeyutl and DH key support and generation in
1809 [Oliver Tappe <zooey@hirschkaefer.de>]
1811 *) New make target "install_html_docs" installs HTML renditions of the
1813 [Oliver Tappe <zooey@hirschkaefer.de>]
1815 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1816 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1817 support key and parameter generation and add initial key generation
1818 functionality for RSA.
1821 *) Add functions for main EVP_PKEY_method operations. The undocumented
1822 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1823 EVP_PKEY_{encrypt,decrypt}_old.
1826 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1827 key API, doesn't do much yet.
1830 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1831 public key algorithms. New option to openssl utility:
1832 "list-public-key-algorithms" to print out info.
1835 *) Implement the Supported Elliptic Curves Extension for
1836 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1839 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1840 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1843 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1844 utilities such as rsa, dsa, dsaparam etc except they process any key
1848 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1849 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1850 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1854 *) Initial support for pluggable public key ASN1.
1855 De-spaghettify the public key ASN1 handling. Move public and private
1856 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1857 algorithm specific handling to a single module within the relevant
1858 algorithm directory. Add functions to allow (near) opaque processing
1859 of public and private key structures.
1862 *) Implement the Supported Point Formats Extension for
1863 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1866 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1867 for the psk identity [hint] and the psk callback functions to the
1868 SSL_SESSION, SSL and SSL_CTX structure.
1871 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1875 SSL_CTX_use_psk_identity_hint
1876 SSL_get_psk_identity_hint
1877 SSL_get_psk_identity
1878 SSL_use_psk_identity_hint
1880 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1882 *) Add RFC 3161 compliant time stamp request creation, response generation
1883 and response verification functionality.
1884 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1886 *) Add initial support for TLS extensions, specifically for the server_name
1887 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1888 have new members for a host name. The SSL data structure has an
1889 additional member SSL_CTX *initial_ctx so that new sessions can be
1890 stored in that context to allow for session resumption, even after the
1891 SSL has been switched to a new SSL_CTX in reaction to a client's
1892 server_name extension.
1894 New functions (subject to change):
1896 SSL_get_servername()
1897 SSL_get_servername_type()
1900 New CTRL codes and macros (subject to change):
1902 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1903 - SSL_CTX_set_tlsext_servername_callback()
1904 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1905 - SSL_CTX_set_tlsext_servername_arg()
1906 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1908 openssl s_client has a new '-servername ...' option.
1910 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1911 '-key2 ...', '-servername_fatal' (subject to change). This allows
1912 testing the HostName extension for a specific single host name ('-cert'
1913 and '-key' remain fallbacks for handshakes without HostName
1914 negotiation). If the unrecogninzed_name alert has to be sent, this by
1915 default is a warning; it becomes fatal with the '-servername_fatal'
1918 [Peter Sylvester, Remy Allais, Christophe Renou]
1920 *) Whirlpool hash implementation is added.
1923 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1924 bn(64,32). Because of instruction set limitations it doesn't have
1925 any negative impact on performance. This was done mostly in order
1926 to make it possible to share assembler modules, such as bn_mul_mont
1927 implementations, between 32- and 64-bit builds without hassle.
1930 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1931 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1935 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1936 dedicated Montgomery multiplication procedure, is introduced.
1937 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1938 "64-bit" performance on certain 32-bit targets.
1941 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1942 in SSL structures. New SSL ctrl to set maximum send fragment size.
1943 Save memory by seeting the I/O buffer sizes dynamically instead of
1944 using the maximum available value.
1947 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1948 in addition to the text details.
1951 *) Very, very preliminary EXPERIMENTAL support for printing of general
1952 ASN1 structures. This currently produces rather ugly output and doesn't
1953 handle several customised structures at all.
1956 *) Integrated support for PVK file format and some related formats such
1957 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1958 these in the 'rsa' and 'dsa' utilities.
1961 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1964 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1965 place for the (very old) "NETSCAPE" format certificates which are now
1966 handled using new ASN1 code equivalents.
1969 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1970 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1971 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1974 *) Modify CRL distribution points extension code to print out previously
1975 unsupported fields. Enhance extension setting code to allow setting of
1979 *) Add print and set support for Issuing Distribution Point CRL extension.
1982 *) Change 'Configure' script to enable Camellia by default.
1985 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
1987 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
1989 This addresses the flaw in CBC record processing discovered by
1990 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
1991 at: http://www.isg.rhul.ac.uk/tls/
1993 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1994 Security Group at Royal Holloway, University of London
1995 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
1996 Emilia Käsper for the initial patch.
1998 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2000 *) Return an error when checking OCSP signatures when key is NULL.
2001 This fixes a DoS attack. (CVE-2013-0166)
2004 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2005 the right response is stapled. Also change SSL_get_certificate()
2006 so it returns the certificate actually sent.
2007 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2008 (This is a backport)
2009 [Rob Stradling <rob.stradling@comodo.com>]
2011 *) Fix possible deadlock when decoding public keys.
2014 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2016 *) Sanity check record length before skipping explicit IV in DTLS
2019 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2020 fuzzing as a service testing platform.
2024 *) Initialise tkeylen properly when encrypting CMS messages.
2025 Thanks to Solar Designer of Openwall for reporting this issue.
2028 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2030 *) The fix for CVE-2012-2110 did not take into account that the
2031 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2032 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2033 rejecting negative len parameter. (CVE-2012-2131)
2034 [Tomas Hoger <thoger@redhat.com>]
2036 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2038 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2039 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2040 in CRYPTO_realloc_clean.
2042 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2043 issue and to Adam Langley <agl@chromium.org> for fixing it.
2045 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2047 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2049 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2050 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2051 content decryption and always return the same error. Note: this attack
2052 needs on average 2^20 messages so it only affects automated senders. The
2053 old behaviour can be reenabled in the CMS code by setting the
2054 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2055 an MMA defence is not necessary.
2056 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2057 this issue. (CVE-2012-0884)
2060 *) Fix CVE-2011-4619: make sure we really are receiving a
2061 client hello before rejecting multiple SGC restarts. Thanks to
2062 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2065 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2067 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2068 Thanks to Antonio Martin, Enterprise Secure Access Research and
2069 Development, Cisco Systems, Inc. for discovering this bug and
2070 preparing a fix. (CVE-2012-0050)
2073 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2075 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2076 of the Vaudenay padding oracle attack on CBC mode encryption
2077 which enables an efficient plaintext recovery attack against
2078 the OpenSSL implementation of DTLS. Their attack exploits timing
2079 differences arising during decryption processing. A research
2080 paper describing this attack can be found at:
2081 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2082 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2083 Security Group at Royal Holloway, University of London
2084 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2085 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2086 for preparing the fix. (CVE-2011-4108)
2087 [Robin Seggelmann, Michael Tuexen]
2089 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2090 [Ben Laurie, Kasper <ekasper@google.com>]
2092 *) Clear bytes used for block padding of SSL 3.0 records.
2094 [Adam Langley (Google)]
2096 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2097 Kadianakis <desnacked@gmail.com> for discovering this issue and
2098 Adam Langley for preparing the fix. (CVE-2011-4619)
2099 [Adam Langley (Google)]
2101 *) Prevent malformed RFC3779 data triggering an assertion failure.
2102 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2103 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2104 [Rob Austein <sra@hactrn.net>]
2106 *) Fix ssl_ciph.c set-up race.
2107 [Adam Langley (Google)]
2109 *) Fix spurious failures in ecdsatest.c.
2110 [Emilia Käsper (Google)]
2112 *) Fix the BIO_f_buffer() implementation (which was mixing different
2113 interpretations of the '..._len' fields).
2114 [Adam Langley (Google)]
2116 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2117 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2118 threads won't reuse the same blinding coefficients.
2120 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2121 lock to call BN_BLINDING_invert_ex, and avoids one use of
2122 BN_BLINDING_update for each BN_BLINDING structure (previously,
2123 the last update always remained unused).
2124 [Emilia Käsper (Google)]
2126 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2127 for multi-threaded use of ECDH.
2128 [Adam Langley (Google)]
2130 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2133 *) Add protection against ECDSA timing attacks as mentioned in the paper
2134 by Billy Bob Brumley and Nicola Tuveri, see:
2136 http://eprint.iacr.org/2011/232.pdf
2138 [Billy Bob Brumley and Nicola Tuveri]
2140 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2142 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2143 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2145 *) Fix bug in string printing code: if *any* escaping is enabled we must
2146 escape the escape character (backslash) or the resulting string is
2150 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2152 *) Disable code workaround for ancient and obsolete Netscape browsers
2153 and servers: an attacker can use it in a ciphersuite downgrade attack.
2154 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2157 *) Fixed J-PAKE implementation error, originally discovered by
2158 Sebastien Martini, further info and confirmation from Stefan
2159 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2162 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2164 *) Fix extension code to avoid race conditions which can result in a buffer
2165 overrun vulnerability: resumed sessions must not be modified as they can
2166 be shared by multiple threads. CVE-2010-3864
2169 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2172 *) Don't reencode certificate when calculating signature: cache and use
2173 the original encoding instead. This makes signature verification of
2174 some broken encodings work correctly.
2177 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2178 is also one of the inputs.
2179 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2181 *) Don't repeatedly append PBE algorithms to table if they already exist.
2182 Sort table on each new add. This effectively makes the table read only
2183 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2187 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2189 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2192 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2193 access or freeing data twice (CVE-2010-0742)
2194 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2196 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2197 common in certificates and some applications which only call
2198 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2202 Reduce copying into .apps and .test in makevms.com
2203 Don't try to use blank CA certificate in CA.com
2204 Allow use of C files from original directories in maketests.com
2205 [Steven M. Schweda" <sms@antinode.info>]
2207 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2209 *) When rejecting SSL/TLS records due to an incorrect version number, never
2210 update s->server with a new major version number. As of
2211 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2212 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2213 the previous behavior could result in a read attempt at NULL when
2214 receiving specific incorrect SSL/TLS records once record payload
2215 protection is active. (CVE-2010-0740)
2216 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2218 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2219 could be crashed if the relevant tables were not present (e.g. chrooted).
2220 [Tomas Hoger <thoger@redhat.com>]
2222 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2224 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2225 [Martin Olsson, Neel Mehta]
2227 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2228 accommodate for stack sorting, always a write lock!).
2231 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2232 excessive delays in the RAND_poll(): over a minute. As a workaround
2233 include a time check in the inner Heap32Next loop too.
2236 *) The code that handled flushing of data in SSL/TLS originally used the
2237 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2238 the problem outlined in PR#1949. The fix suggested there however can
2239 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2240 of Apache). So instead simplify the code to flush unconditionally.
2241 This should be fine since flushing with no data to flush is a no op.
2244 *) Handle TLS versions 2.0 and later properly and correctly use the
2245 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2246 off ancient servers have a habit of sticking around for a while...
2249 *) Modify compression code so it frees up structures without using the
2250 ex_data callbacks. This works around a problem where some applications
2251 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2252 restarting) then use compression (e.g. SSL with compression) later.
2253 This results in significant per-connection memory leaks and
2254 has caused some security issues including CVE-2008-1678 and
2258 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2259 change when encrypting or decrypting.
2262 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2263 connect and renegotiate with servers which do not support RI.
2264 Until RI is more widely deployed this option is enabled by default.
2267 *) Add "missing" ssl ctrls to clear options and mode.
2270 *) If client attempts to renegotiate and doesn't support RI respond with
2271 a no_renegotiation alert as required by RFC5746. Some renegotiating
2272 TLS clients will continue a connection gracefully when they receive
2273 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2274 waiting for a server hello which it will never receive. Now we treat a
2275 received no_renegotiation alert as a fatal error. This is because
2276 applications requesting a renegotiation might well expect it to succeed
2277 and would have no code in place to handle the server denying it so the
2278 only safe thing to do is to terminate the connection.
2281 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2282 peer supports secure renegotiation and 0 otherwise. Print out peer
2283 renegotiation support in s_client/s_server.
2286 *) Replace the highly broken and deprecated SPKAC certification method with
2287 the updated NID creation version. This should correctly handle UTF8.
2290 *) Implement RFC5746. Re-enable renegotiation but require the extension
2291 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2292 turns out to be a bad idea. It has been replaced by
2293 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2294 SSL_CTX_set_options(). This is really not recommended unless you
2295 know what you are doing.
2296 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2298 *) Fixes to stateless session resumption handling. Use initial_ctx when
2299 issuing and attempting to decrypt tickets in case it has changed during
2300 servername handling. Use a non-zero length session ID when attempting
2301 stateless session resumption: this makes it possible to determine if
2302 a resumption has occurred immediately after receiving server hello
2303 (several places in OpenSSL subtly assume this) instead of later in
2307 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2308 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2309 fixes for a few places where the return code is not checked
2311 [Julia Lawall <julia@diku.dk>]
2313 *) Add --strict-warnings option to Configure script to include devteam
2314 warnings in other configurations.
2317 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2318 makes it possible to install openssl libraries in locations which
2319 have names other than "lib", for example "/usr/lib64" which some
2321 [Steve Henson, based on patch from Jeremy Utley]
2323 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2324 X690 8.9.12 and can produce some misleading textual output of OIDs.
2325 [Steve Henson, reported by Dan Kaminsky]
2327 *) Delete MD2 from algorithm tables. This follows the recommendation in
2328 several standards that it is not used in new applications due to
2329 several cryptographic weaknesses. For binary compatibility reasons
2330 the MD2 API is still compiled in by default.
2333 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2337 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2338 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2340 [Guenter <lists@gknw.net>]
2342 *) Fix the server certificate chain building code to use X509_verify_cert(),
2343 it used to have an ad-hoc builder which was unable to cope with anything
2344 other than a simple chain.
2345 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2347 *) Don't check self signed certificate signatures in X509_verify_cert()
2348 by default (a flag can override this): it just wastes time without
2349 adding any security. As a useful side effect self signed root CAs
2350 with non-FIPS digests are now usable in FIPS mode.
2353 *) In dtls1_process_out_of_seq_message() the check if the current message
2354 is already buffered was missing. For every new message was memory
2355 allocated, allowing an attacker to perform an denial of service attack
2356 with sending out of seq handshake messages until there is no memory
2357 left. Additionally every future messege was buffered, even if the
2358 sequence number made no sense and would be part of another handshake.
2359 So only messages with sequence numbers less than 10 in advance will be
2360 buffered. (CVE-2009-1378)
2361 [Robin Seggelmann, discovered by Daniel Mentz]
2363 *) Records are buffered if they arrive with a future epoch to be
2364 processed after finishing the corresponding handshake. There is
2365 currently no limitation to this buffer allowing an attacker to perform
2366 a DOS attack with sending records with future epochs until there is no
2367 memory left. This patch adds the pqueue_size() function to detemine
2368 the size of a buffer and limits the record buffer to 100 entries.
2370 [Robin Seggelmann, discovered by Daniel Mentz]
2372 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2373 parent structure is freed. (CVE-2009-1379)
2376 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2377 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2380 [Ilya O. <vrghost@gmail.com>]
2382 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2384 *) Disable renegotiation completely - this fixes a severe security
2385 problem (CVE-2009-3555) at the cost of breaking all
2386 renegotiation. Renegotiation can be re-enabled by setting
2387 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2388 run-time. This is really not recommended unless you know what
2392 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2394 *) Don't set val to NULL when freeing up structures, it is freed up by
2395 underlying code. If sizeof(void *) > sizeof(long) this can result in
2396 zeroing past the valid field. (CVE-2009-0789)
2397 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2399 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2400 checked correctly. This would allow some invalid signed attributes to
2401 appear to verify correctly. (CVE-2009-0591)
2402 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2404 *) Reject UniversalString and BMPString types with invalid lengths. This
2405 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2406 a legal length. (CVE-2009-0590)
2409 *) Set S/MIME signing as the default purpose rather than setting it
2410 unconditionally. This allows applications to override it at the store
2414 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2415 to handle some structures.
2418 *) Improve efficiency of mem_gets: don't search whole buffer each time
2420 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2422 *) New -hex option for openssl rand.
2425 *) Print out UTF8String and NumericString when parsing ASN1.
2428 *) Support NumericString type for name components.
2431 *) Allow CC in the environment to override the automatically chosen
2432 compiler. Note that nothing is done to ensure flags work with the
2436 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2438 *) Properly check EVP_VerifyFinal() and similar return values
2440 [Ben Laurie, Bodo Moeller, Google Security Team]
2442 *) Enable TLS extensions by default.
2445 *) Allow the CHIL engine to be loaded, whether the application is
2446 multithreaded or not. (This does not release the developer from the
2447 obligation to set up the dynamic locking callbacks.)
2448 [Sander Temme <sander@temme.net>]
2450 *) Use correct exit code if there is an error in dgst command.
2451 [Steve Henson; problem pointed out by Roland Dirlewanger]
2453 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2454 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2457 *) Add experimental JPAKE support, including demo authentication in
2458 s_client and s_server.
2461 *) Set the comparison function in v3_addr_canonize().
2462 [Rob Austein <sra@hactrn.net>]
2464 *) Add support for XMPP STARTTLS in s_client.
2465 [Philip Paeps <philip@freebsd.org>]
2467 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2468 to ensure that even with this option, only ciphersuites in the
2469 server's preference list will be accepted. (Note that the option
2470 applies only when resuming a session, so the earlier behavior was
2471 just about the algorithm choice for symmetric cryptography.)
2474 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2476 *) Fix NULL pointer dereference if a DTLS server received
2477 ChangeCipherSpec as first record (CVE-2009-1386).
2480 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2481 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2484 *) The fix in 0.9.8c that supposedly got rid of unsafe
2485 double-checked locking was incomplete for RSA blinding,
2486 addressing just one layer of what turns out to have been
2487 doubly unsafe triple-checked locking.
2489 So now fix this for real by retiring the MONT_HELPER macro
2490 in crypto/rsa/rsa_eay.c.
2492 [Bodo Moeller; problem pointed out by Marius Schilder]
2494 *) Various precautionary measures:
2496 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2498 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2499 (NB: This would require knowledge of the secret session ticket key
2500 to exploit, in which case you'd be SOL either way.)
2502 - Change bn_nist.c so that it will properly handle input BIGNUMs
2503 outside the expected range.
2505 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2508 [Neel Mehta, Bodo Moeller]
2510 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2511 the load fails. Useful for distros.
2512 [Ben Laurie and the FreeBSD team]
2514 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2517 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2520 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2522 This work was sponsored by Logica.
2525 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2526 keystores. Support for SSL/TLS client authentication too.
2527 Not compiled unless enable-capieng specified to Configure.
2529 This work was sponsored by Logica.
2532 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2533 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2534 attribute creation routines such as certifcate requests and PKCS#12
2538 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2540 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2541 handshake which could lead to a cilent crash as found using the
2542 Codenomicon TLS test suite (CVE-2008-1672)
2543 [Steve Henson, Mark Cox]
2545 *) Fix double free in TLS server name extensions which could lead to
2546 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2549 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2551 Clear the error queue to ensure that error entries left from
2552 older function calls do not interfere with the correct operation.
2553 [Lutz Jaenicke, Erik de Castro Lopo]
2555 *) Remove root CA certificates of commercial CAs:
2557 The OpenSSL project does not recommend any specific CA and does not
2558 have any policy with respect to including or excluding any CA.
2559 Therefore it does not make any sense to ship an arbitrary selection
2560 of root CA certificates with the OpenSSL software.
2563 *) RSA OAEP patches to fix two separate invalid memory reads.
2564 The first one involves inputs when 'lzero' is greater than
2565 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2566 before the beginning of from). The second one involves inputs where
2567 the 'db' section contains nothing but zeroes (there is a one-byte
2568 invalid read after the end of 'db').
2569 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2571 *) Partial backport from 0.9.9-dev:
2573 Introduce bn_mul_mont (dedicated Montgomery multiplication
2574 procedure) as a candidate for BIGNUM assembler implementation.
2575 While 0.9.9-dev uses assembler for various architectures, only
2576 x86_64 is available by default here in the 0.9.8 branch, and
2577 32-bit x86 is available through a compile-time setting.
2579 To try the 32-bit x86 assembler implementation, use Configure
2580 option "enable-montasm" (which exists only for this backport).
2582 As "enable-montasm" for 32-bit x86 disclaims code stability
2583 anyway, in this constellation we activate additional code
2584 backported from 0.9.9-dev for further performance improvements,
2585 namely BN_from_montgomery_word. (To enable this otherwise,
2586 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2588 [Andy Polyakov (backport partially by Bodo Moeller)]
2590 *) Add TLS session ticket callback. This allows an application to set
2591 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2592 values. This is useful for key rollover for example where several key
2593 sets may exist with different names.
2596 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2597 This was broken until now in 0.9.8 releases, such that the only way
2598 a registered ENGINE could be used (assuming it initialises
2599 successfully on the host) was to explicitly set it as the default
2600 for the relevant algorithms. This is in contradiction with 0.9.7
2601 behaviour and the documentation. With this fix, when an ENGINE is
2602 registered into a given algorithm's table of implementations, the
2603 'uptodate' flag is reset so that auto-discovery will be used next
2604 time a new context for that algorithm attempts to select an
2606 [Ian Lister (tweaked by Geoff Thorpe)]
2608 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2609 implemention in the following ways:
2611 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2614 Lack of BER streaming support means one pass streaming processing is
2615 only supported if data is detached: setting the streaming flag is
2616 ignored for embedded content.
2618 CMS support is disabled by default and must be explicitly enabled
2619 with the enable-cms configuration option.
2622 *) Update the GMP engine glue to do direct copies between BIGNUM and
2623 mpz_t when openssl and GMP use the same limb size. Otherwise the
2624 existing "conversion via a text string export" trick is still used.
2625 [Paul Sheer <paulsheer@gmail.com>]
2627 *) Zlib compression BIO. This is a filter BIO which compressed and
2628 uncompresses any data passed through it.
2631 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2632 RFC3394 compatible AES key wrapping.
2635 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2636 sets string data without copying. X509_ALGOR_set0() and
2637 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2638 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2639 from an X509_ATTRIBUTE structure optionally checking it occurs only
2640 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2644 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2645 to get the expected BN_FLG_CONSTTIME behavior.
2646 [Bodo Moeller (Google)]
2650 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2651 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2652 - added some more tests to do_tests.pl
2653 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2654 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2655 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2656 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2657 - various changes to netware.pl to enable gcc-cross builds on Win32
2659 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2660 - various changes to fix missing prototype warnings
2661 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2662 - added AES, WHIRLPOOL and CPUID assembler code to build files
2663 - added missing AES assembler make rules to mk1mf.pl
2664 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2665 [Guenter Knauf <eflash@gmx.net>]
2667 *) Implement certificate status request TLS extension defined in RFC3546.
2668 A client can set the appropriate parameters and receive the encoded
2669 OCSP response via a callback. A server can query the supplied parameters
2670 and set the encoded OCSP response in the callback. Add simplified examples
2671 to s_client and s_server.
2674 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2676 *) Fix various bugs:
2677 + Binary incompatibility of ssl_ctx_st structure
2678 + DTLS interoperation with non-compliant servers
2679 + Don't call get_session_cb() without proposed session
2680 + Fix ia64 assembler code
2681 [Andy Polyakov, Steve Henson]
2683 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2685 *) DTLS Handshake overhaul. There were longstanding issues with
2686 OpenSSL DTLS implementation, which were making it impossible for
2687 RFC 4347 compliant client to communicate with OpenSSL server.
2688 Unfortunately just fixing these incompatibilities would "cut off"
2689 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2690 server keeps tolerating non RFC compliant syntax. The opposite is
2691 not true, 0.9.8f client can not communicate with earlier server.
2692 This update even addresses CVE-2007-4995.
2695 *) Changes to avoid need for function casts in OpenSSL: some compilers
2696 (gcc 4.2 and later) reject their use.
2697 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2700 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2701 RFC4507bis. The encrypted ticket format is an encrypted encoded
2702 SSL_SESSION structure, that way new session features are automatically
2705 If a client application caches session in an SSL_SESSION structure
2706 support is transparent because tickets are now stored in the encoded
2709 The SSL_CTX structure automatically generates keys for ticket
2710 protection in servers so again support should be possible
2711 with no application modification.
2713 If a client or server wishes to disable RFC4507 support then the option
2714 SSL_OP_NO_TICKET can be set.
2716 Add a TLS extension debugging callback to allow the contents of any client
2717 or server extensions to be examined.
2719 This work was sponsored by Google.
2722 *) Add initial support for TLS extensions, specifically for the server_name
2723 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2724 have new members for a host name. The SSL data structure has an
2725 additional member SSL_CTX *initial_ctx so that new sessions can be
2726 stored in that context to allow for session resumption, even after the
2727 SSL has been switched to a new SSL_CTX in reaction to a client's
2728 server_name extension.
2730 New functions (subject to change):
2732 SSL_get_servername()
2733 SSL_get_servername_type()
2736 New CTRL codes and macros (subject to change):
2738 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2739 - SSL_CTX_set_tlsext_servername_callback()
2740 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2741 - SSL_CTX_set_tlsext_servername_arg()
2742 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2744 openssl s_client has a new '-servername ...' option.
2746 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2747 '-key2 ...', '-servername_fatal' (subject to change). This allows
2748 testing the HostName extension for a specific single host name ('-cert'
2749 and '-key' remain fallbacks for handshakes without HostName
2750 negotiation). If the unrecogninzed_name alert has to be sent, this by
2751 default is a warning; it becomes fatal with the '-servername_fatal'
2754 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2756 *) Add AES and SSE2 assembly language support to VC++ build.
2759 *) Mitigate attack on final subtraction in Montgomery reduction.
2762 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2763 (which previously caused an internal error).
2766 *) Squeeze another 10% out of IGE mode when in != out.
2769 *) AES IGE mode speedup.
2770 [Dean Gaudet (Google)]
2772 *) Add the Korean symmetric 128-bit cipher SEED (see
2773 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2774 add SEED ciphersuites from RFC 4162:
2776 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2777 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2778 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2779 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2781 To minimize changes between patchlevels in the OpenSSL 0.9.8
2782 series, SEED remains excluded from compilation unless OpenSSL
2783 is configured with 'enable-seed'.
2784 [KISA, Bodo Moeller]
2786 *) Mitigate branch prediction attacks, which can be practical if a
2787 single processor is shared, allowing a spy process to extract
2788 information. For detailed background information, see
2789 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2790 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2791 and Necessary Software Countermeasures"). The core of the change
2792 are new versions BN_div_no_branch() and
2793 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2794 respectively, which are slower, but avoid the security-relevant
2795 conditional branches. These are automatically called by BN_div()
2796 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2797 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2798 remove a conditional branch.
2800 BN_FLG_CONSTTIME is the new name for the previous
2801 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2802 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2803 in the exponent causes BN_mod_exp_mont() to use the alternative
2804 implementation in BN_mod_exp_mont_consttime().) The old name
2805 remains as a deprecated alias.
2807 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2808 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2809 constant-time implementations for more than just exponentiation.
2810 Here too the old name is kept as a deprecated alias.
2812 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2813 the BN_BLINDING structure gets an independent copy of the
2814 modulus. This means that the previous "BIGNUM *m" argument to
2815 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2816 essentially becomes "const BIGNUM *m", although we can't actually
2817 change this in the header file before 0.9.9. It allows
2818 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2819 enable BN_FLG_CONSTTIME.
2821 [Matthew D Wood (Intel Corp)]
2823 *) In the SSL/TLS server implementation, be strict about session ID
2824 context matching (which matters if an application uses a single
2825 external cache for different purposes). Previously,
2826 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2827 set. This did ensure strict client verification, but meant that,
2828 with applications using a single external cache for quite
2829 different requirements, clients could circumvent ciphersuite
2830 restrictions for a given session ID context by starting a session
2831 in a different context.
2834 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2835 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2836 authentication-only ciphersuites.
2839 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2840 not complete and could lead to a possible single byte overflow
2841 (CVE-2007-5135) [Ben Laurie]
2843 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2845 *) Since AES128 and AES256 (and similarly Camellia128 and
2846 Camellia256) share a single mask bit in the logic of
2847 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2848 kludge to work properly if AES128 is available and AES256 isn't
2849 (or if Camellia128 is available and Camellia256 isn't).
2852 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2853 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2854 When a point or a seed is encoded in a BIT STRING, we need to
2855 prevent the removal of trailing zero bits to get the proper DER
2856 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2857 of a NamedBitList, for which trailing 0 bits need to be removed.)
2860 *) Have SSL/TLS server implementation tolerate "mismatched" record
2861 protocol version while receiving ClientHello even if the
2862 ClientHello is fragmented. (The server can't insist on the
2863 particular protocol version it has chosen before the ServerHello
2864 message has informed the client about his choice.)
2867 *) Add RFC 3779 support.
2868 [Rob Austein for ARIN, Ben Laurie]
2870 *) Load error codes if they are not already present instead of using a
2871 static variable. This allows them to be cleanly unloaded and reloaded.
2872 Improve header file function name parsing.
2875 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2876 or CAPABILITY handshake as required by RFCs.
2879 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2881 *) Introduce limits to prevent malicious keys being able to
2882 cause a denial of service. (CVE-2006-2940)
2883 [Steve Henson, Bodo Moeller]
2885 *) Fix ASN.1 parsing of certain invalid structures that can result
2886 in a denial of service. (CVE-2006-2937) [Steve Henson]
2888 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2889 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2891 *) Fix SSL client code which could crash if connecting to a
2892 malicious SSLv2 server. (CVE-2006-4343)
2893 [Tavis Ormandy and Will Drewry, Google Security Team]
2895 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2896 match only those. Before that, "AES256-SHA" would be interpreted
2897 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2898 the same strength classification in 0.9.7h) as we currently only
2899 have a single AES bit in the ciphersuite description bitmap.
2900 That change, however, also applied to ciphersuite strings such as
2901 "RC4-MD5" that intentionally matched multiple ciphersuites --
2902 namely, SSL 2.0 ciphersuites in addition to the more common ones
2903 from SSL 3.0/TLS 1.0.
2905 So we change the selection algorithm again: Naming an explicit
2906 ciphersuite selects this one ciphersuite, and any other similar
2907 ciphersuite (same bitmap) from *other* protocol versions.
2908 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2909 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2911 Since SSL 2.0 does not have any ciphersuites for which the
2912 128/256 bit distinction would be relevant, this works for now.
2913 The proper fix will be to use different bits for AES128 and
2914 AES256, which would have avoided the problems from the beginning;
2915 however, bits are scarce, so we can only do this in a new release
2916 (not just a patchlevel) when we can change the SSL_CIPHER
2917 definition to split the single 'unsigned long mask' bitmap into
2918 multiple values to extend the available space.
2922 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2924 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2925 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2927 *) Add AES IGE and biIGE modes.
2930 *) Change the Unix randomness entropy gathering to use poll() when
2931 possible instead of select(), since the latter has some
2932 undesirable limitations.
2933 [Darryl Miles via Richard Levitte and Bodo Moeller]
2935 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2936 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2937 cannot be implicitly activated as part of, e.g., the "AES" alias.
2938 However, please upgrade to OpenSSL 0.9.9[-dev] for
2939 non-experimental use of the ECC ciphersuites to get TLS extension
2940 support, which is required for curve and point format negotiation
2941 to avoid potential handshake problems.
2944 *) Disable rogue ciphersuites:
2946 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2947 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2948 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2950 The latter two were purportedly from
2951 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2954 Also deactivate the remaining ciphersuites from
2955 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2956 unofficial, and the ID has long expired.
2959 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2960 dual-core machines) and other potential thread-safety issues.
2963 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2964 versions), which is now available for royalty-free use
2965 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2966 Also, add Camellia TLS ciphersuites from RFC 4132.
2968 To minimize changes between patchlevels in the OpenSSL 0.9.8
2969 series, Camellia remains excluded from compilation unless OpenSSL
2970 is configured with 'enable-camellia'.
2973 *) Disable the padding bug check when compression is in use. The padding
2974 bug check assumes the first packet is of even length, this is not
2975 necessarily true if compresssion is enabled and can result in false
2976 positives causing handshake failure. The actual bug test is ancient
2977 code so it is hoped that implementations will either have fixed it by
2978 now or any which still have the bug do not support compression.
2981 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2983 *) When applying a cipher rule check to see if string match is an explicit
2984 cipher suite and only match that one cipher suite if it is.
2987 *) Link in manifests for VC++ if needed.
2988 [Austin Ziegler <halostatue@gmail.com>]
2990 *) Update support for ECC-based TLS ciphersuites according to
2991 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2992 TLS extensions, which are supported starting with the 0.9.9
2993 branch, not in the OpenSSL 0.9.8 branch).
2996 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2997 opaque EVP_CIPHER_CTX handling.
3000 *) Fixes and enhancements to zlib compression code. We now only use
3001 "zlib1.dll" and use the default __cdecl calling convention on Win32
3002 to conform with the standards mentioned here:
3003 http://www.zlib.net/DLL_FAQ.txt
3004 Static zlib linking now works on Windows and the new --with-zlib-include
3005 --with-zlib-lib options to Configure can be used to supply the location
3006 of the headers and library. Gracefully handle case where zlib library
3010 *) Several fixes and enhancements to the OID generation code. The old code
3011 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3012 handle numbers larger than ULONG_MAX, truncated printing and had a
3013 non standard OBJ_obj2txt() behaviour.
3016 *) Add support for building of engines under engine/ as shared libraries
3017 under VC++ build system.
3020 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3021 Hopefully, we will not see any false combination of paths any more.
3024 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3026 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3027 (part of SSL_OP_ALL). This option used to disable the
3028 countermeasure against man-in-the-middle protocol-version
3029 rollback in the SSL 2.0 server implementation, which is a bad
3030 idea. (CVE-2005-2969)
3032 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3033 for Information Security, National Institute of Advanced Industrial
3034 Science and Technology [AIST], Japan)]
3036 *) Add two function to clear and return the verify parameter flags.
3039 *) Keep cipherlists sorted in the source instead of sorting them at
3040 runtime, thus removing the need for a lock.
3043 *) Avoid some small subgroup attacks in Diffie-Hellman.
3044 [Nick Mathewson and Ben Laurie]
3046 *) Add functions for well-known primes.
3049 *) Extended Windows CE support.
3050 [Satoshi Nakamura and Andy Polyakov]
3052 *) Initialize SSL_METHOD structures at compile time instead of during
3053 runtime, thus removing the need for a lock.
3056 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3057 attempting to decrypt each encrypted key in turn. Add support to
3061 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3063 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3066 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3069 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3070 key into the same file any more.
3073 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3076 *) Add -utf8 command line and config file option to 'ca'.
3077 [Stefan <stf@udoma.org]
3079 *) Removed the macro des_crypt(), as it seems to conflict with some
3080 libraries. Use DES_crypt().
3083 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3084 involves renaming the source and generated shared-libs for
3085 both. The engines will accept the corrected or legacy ids
3086 ('ncipher' and '4758_cca' respectively) when binding. NB,
3087 this only applies when building 'shared'.
3088 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3090 *) Add attribute functions to EVP_PKEY structure. Modify
3091 PKCS12_create() to recognize a CSP name attribute and
3092 use it. Make -CSP option work again in pkcs12 utility.
3095 *) Add new functionality to the bn blinding code:
3096 - automatic re-creation of the BN_BLINDING parameters after
3097 a fixed number of uses (currently 32)
3098 - add new function for parameter creation
3099 - introduce flags to control the update behaviour of the
3100 BN_BLINDING parameters
3101 - hide BN_BLINDING structure
3102 Add a second BN_BLINDING slot to the RSA structure to improve
3103 performance when a single RSA object is shared among several
3107 *) Add support for DTLS.
3108 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3110 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3111 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3114 *) Remove buggy and incompletet DH cert support from
3115 ssl/ssl_rsa.c and ssl/s3_both.c
3118 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3119 the apps/openssl applications.
3122 *) Compile clean with "-Wall -Wmissing-prototypes
3123 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3124 DEBUG_SAFESTACK must also be set.
3127 *) Change ./Configure so that certain algorithms can be disabled by default.
3128 The new counterpiece to "no-xxx" is "enable-xxx".
3130 The patented RC5 and MDC2 algorithms will now be disabled unless
3131 "enable-rc5" and "enable-mdc2", respectively, are specified.
3133 (IDEA remains enabled despite being patented. This is because IDEA
3134 is frequently required for interoperability, and there is no license
3135 fee for non-commercial use. As before, "no-idea" can be used to
3136 avoid this algorithm.)
3140 *) Add processing of proxy certificates (see RFC 3820). This work was
3141 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3142 EGEE (Enabling Grids for E-science in Europe).
3145 *) RC4 performance overhaul on modern architectures/implementations, such
3146 as Intel P4, IA-64 and AMD64.
3149 *) New utility extract-section.pl. This can be used specify an alternative
3150 section number in a pod file instead of having to treat each file as
3151 a separate case in Makefile. This can be done by adding two lines to the
3154 =for comment openssl_section:XXX
3156 The blank line is mandatory.
3160 *) New arguments -certform, -keyform and -pass for s_client and s_server
3161 to allow alternative format key and certificate files and passphrase
3165 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3166 update associated structures and add various utility functions.
3168 Add new policy related verify parameters, include policy checking in
3169 standard verify code. Enhance 'smime' application with extra parameters
3170 to support policy checking and print out.
3173 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3174 Nehemiah processors. These extensions support AES encryption in hardware
3175 as well as RNG (though RNG support is currently disabled).
3176 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3178 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3181 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3182 [Andy Polyakov and a number of other people]
3184 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3185 implementation contributed by IBM.
3186 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3188 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3189 exponent rather than 'unsigned long'. There is a corresponding change to
3190 the new 'rsa_keygen' element of the RSA_METHOD structure.
3191 [Jelte Jansen, Geoff Thorpe]
3193 *) Functionality for creating the initial serial number file is now
3194 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3196 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3197 number file to 1, which is bound to cause problems. To avoid
3198 the problems while respecting compatibility between different 0.9.7
3199 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3200 CA.pl for serial number initialization. With the new release 0.9.8,
3201 we can fix the problem directly in the 'ca' utility.)
3204 *) Reduced header interdepencies by declaring more opaque objects in
3205 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3206 give fewer recursive includes, which could break lazy source code - so
3207 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3208 developers should define this symbol when building and using openssl to
3209 ensure they track the recommended behaviour, interfaces, [etc], but
3210 backwards-compatible behaviour prevails when this isn't defined.
3213 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3216 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3217 This will generate a random key of the appropriate length based on the
3218 cipher context. The EVP_CIPHER can provide its own random key generation
3219 routine to support keys of a specific form. This is used in the des and
3220 3des routines to generate a key of the correct parity. Update S/MIME
3221 code to use new functions and hence generate correct parity DES keys.
3222 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3223 valid (weak or incorrect parity).
3226 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3227 as looking them up. This is useful when the verified structure may contain
3228 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3229 present unless the new PKCS7_NO_CRL flag is asserted.
3232 *) Extend ASN1 oid configuration module. It now additionally accepts the
3235 shortName = some long name, 1.2.3.4
3238 *) Reimplemented the BN_CTX implementation. There is now no more static
3239 limitation on the number of variables it can handle nor the depth of the
3240 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3241 information can now expand as required, and rather than having a single
3242 static array of bignums, BN_CTX now uses a linked-list of such arrays
3243 allowing it to expand on demand whilst maintaining the usefulness of
3244 BN_CTX's "bundling".
3247 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3248 to allow all RSA operations to function using a single BN_CTX.
3251 *) Preliminary support for certificate policy evaluation and checking. This
3252 is initially intended to pass the tests outlined in "Conformance Testing
3253 of Relying Party Client Certificate Path Processing Logic" v1.07.
3256 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3257 remained unused and not that useful. A variety of other little bignum
3258 tweaks and fixes have also been made continuing on from the audit (see
3262 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3263 associated ASN1, EVP and SSL functions and old ASN1 macros.
3266 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3267 and this should never fail. So the return value from the use of
3268 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3269 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3272 *) BN_CTX_get() should return zero-valued bignums, providing the same
3273 initialised value as BN_new().
3274 [Geoff Thorpe, suggested by Ulf Möller]
3276 *) Support for inhibitAnyPolicy certificate extension.
3279 *) An audit of the BIGNUM code is underway, for which debugging code is
3280 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3281 is considered valid when processing BIGNUMs, and causes execution to
3282 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3283 further steps are taken to deliberately pollute unused data in BIGNUM
3284 structures to try and expose faulty code further on. For now, openssl will
3285 (in its default mode of operation) continue to tolerate the inconsistent
3286 forms that it has tolerated in the past, but authors and packagers should
3287 consider trying openssl and their own applications when compiled with
3288 these debugging symbols defined. It will help highlight potential bugs in
3289 their own code, and will improve the test coverage for OpenSSL itself. At
3290 some point, these tighter rules will become openssl's default to improve
3291 maintainability, though the assert()s and other overheads will remain only
3292 in debugging configurations. See bn.h for more details.
3293 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3295 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3296 that can only be obtained through BN_CTX_new() (which implicitly
3297 initialises it). The presence of this function only made it possible
3298 to overwrite an existing structure (and cause memory leaks).
3301 *) Because of the callback-based approach for implementing LHASH as a
3302 template type, lh_insert() adds opaque objects to hash-tables and
3303 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3304 to clean up those corresponding objects before destroying the hash table
3305 (and losing the object pointers). So some over-zealous constifications in
3306 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3307 objects as "const" and the lh_doall[_arg] callback wrappers are not
3308 prototyped to have "const" restrictions on the object pointers they are
3309 given (and so aren't required to cast them away any more).
3312 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3313 (speed) prefers to use its own implementation. The two implementations
3314 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3315 its object type properly exposed (MS_TM) instead of casting to/from "char
3316 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3317 aren't necessarily the greatest nomenclatures - but this is what was used
3318 internally to the implementation so I've used that for now.
3321 *) Ensure that deprecated functions do not get compiled when
3322 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3323 the self-tests were still using deprecated key-generation functions so
3324 these have been updated also.
3327 *) Reorganise PKCS#7 code to separate the digest location functionality
3328 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3329 New function PKCS7_set_digest() to set the digest type for PKCS#7
3330 digestedData type. Add additional code to correctly generate the
3331 digestedData type and add support for this type in PKCS7 initialization
3335 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3336 structure of type "other".
3339 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3340 sure the loop does correctly stop and breaking ("division by zero")
3341 modulus operations are not performed. The (pre-generated) prime
3342 table crypto/bn/bn_prime.h was already correct, but it could not be
3343 re-generated on some platforms because of the "division by zero"
3344 situation in the script.
3345 [Ralf S. Engelschall]
3347 *) Update support for ECC-based TLS ciphersuites according to
3348 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3349 SHA-1 now is only used for "small" curves (where the
3350 representation of a field element takes up to 24 bytes); for
3351 larger curves, the field element resulting from ECDH is directly
3352 used as premaster secret.
3353 [Douglas Stebila (Sun Microsystems Laboratories)]
3355 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3356 curve secp160r1 to the tests.
3357 [Douglas Stebila (Sun Microsystems Laboratories)]
3359 *) Add the possibility to load symbols globally with DSO.
3360 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3362 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3363 control of the error stack.
3366 *) Add support for STORE in ENGINE.
3369 *) Add the STORE type. The intention is to provide a common interface
3370 to certificate and key stores, be they simple file-based stores, or
3371 HSM-type store, or LDAP stores, or...
3372 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3375 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3376 pass a list of arguments to any function as well as provide a way
3377 for a function to pass data back to the caller.
3380 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3381 works like BUF_strdup() but can be used to duplicate a portion of
3382 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3386 *) Add the function sk_find_ex() which works like sk_find(), but will
3387 return an index to an element even if an exact match couldn't be
3388 found. The index is guaranteed to point at the element where the
3389 searched-for key would be inserted to preserve sorting order.
3392 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3393 takes an extra flags argument for optional functionality. Currently,
3394 the following flags are defined:
3396 OBJ_BSEARCH_VALUE_ON_NOMATCH
3397 This one gets OBJ_bsearch_ex() to return a pointer to the first
3398 element where the comparing function returns a negative or zero
3401 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3402 This one gets OBJ_bsearch_ex() to return a pointer to the first
3403 element where the comparing function returns zero. This is useful
3404 if there are more than one element where the comparing function
3408 *) Make it possible to create self-signed certificates with 'openssl ca'
3409 in such a way that the self-signed certificate becomes part of the
3410 CA database and uses the same mechanisms for serial number generation
3411 as all other certificate signing. The new flag '-selfsign' enables
3412 this functionality. Adapt CA.sh and CA.pl.in.
3415 *) Add functionality to check the public key of a certificate request
3416 against a given private. This is useful to check that a certificate
3417 request can be signed by that key (self-signing).
3420 *) Make it possible to have multiple active certificates with the same
3421 subject in the CA index file. This is done only if the keyword
3422 'unique_subject' is set to 'no' in the main CA section (default
3423 if 'CA_default') of the configuration file. The value is saved
3424 with the database itself in a separate index attribute file,
3425 named like the index file with '.attr' appended to the name.
3428 *) Generate muti valued AVAs using '+' notation in config files for
3432 *) Support for nameConstraints certificate extension.
3435 *) Support for policyConstraints certificate extension.
3438 *) Support for policyMappings certificate extension.
3441 *) Make sure the default DSA_METHOD implementation only uses its
3442 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3443 and change its own handlers to be NULL so as to remove unnecessary
3444 indirection. This lets alternative implementations fallback to the
3445 default implementation more easily.
3448 *) Support for directoryName in GeneralName related extensions
3452 *) Make it possible to link applications using Makefile.shared.
3453 Make that possible even when linking against static libraries!
3456 *) Support for single pass processing for S/MIME signing. This now
3457 means that S/MIME signing can be done from a pipe, in addition
3458 cleartext signing (multipart/signed type) is effectively streaming
3459 and the signed data does not need to be all held in memory.
3461 This is done with a new flag PKCS7_STREAM. When this flag is set
3462 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3463 is done after the data is output (and digests calculated) in
3464 SMIME_write_PKCS7().
3467 *) Add full support for -rpath/-R, both in shared libraries and
3468 applications, at least on the platforms where it's known how
3472 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3473 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3474 will now compute a table of multiples of the generator that
3475 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3476 faster (notably in the case of a single point multiplication,
3477 scalar * generator).
3478 [Nils Larsch, Bodo Moeller]
3480 *) IPv6 support for certificate extensions. The various extensions
3481 which use the IP:a.b.c.d can now take IPv6 addresses using the
3482 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3486 *) Added an ENGINE that implements RSA by performing private key
3487 exponentiations with the GMP library. The conversions to and from
3488 GMP's mpz_t format aren't optimised nor are any montgomery forms
3489 cached, and on x86 it appears OpenSSL's own performance has caught up.
3490 However there are likely to be other architectures where GMP could
3491 provide a boost. This ENGINE is not built in by default, but it can be
3492 specified at Configure time and should be accompanied by the necessary
3493 linker additions, eg;
3494 ./config -DOPENSSL_USE_GMP -lgmp
3497 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3498 testing availability of engines with "-t" - the old behaviour is
3499 produced by increasing the feature's verbosity with "-tt".
3502 *) ECDSA routines: under certain error conditions uninitialized BN objects
3503 could be freed. Solution: make sure initialization is performed early
3504 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3508 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3509 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3510 software implementations. For DSA and DH, parameter generation can
3511 also be overriden by providing the appropriate method callbacks.
3514 *) Change the "progress" mechanism used in key-generation and
3515 primality testing to functions that take a new BN_GENCB pointer in
3516 place of callback/argument pairs. The new API functions have "_ex"
3517 postfixes and the older functions are reimplemented as wrappers for
3518 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3519 declarations of the old functions to help (graceful) attempts to
3520 migrate to the new functions. Also, the new key-generation API
3521 functions operate on a caller-supplied key-structure and return
3522 success/failure rather than returning a key or NULL - this is to
3523 help make "keygen" another member function of RSA_METHOD etc.
3525 Example for using the new callback interface:
3527 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3531 BN_GENCB_set(&my_cb, my_callback, my_arg);
3533 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3534 /* For the meaning of a, b in calls to my_callback(), see the
3535 * documentation of the function that calls the callback.
3536 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3537 * my_callback should return 1 if it wants BN_is_prime_ex()
3538 * to continue, or 0 to stop.
3543 *) Change the ZLIB compression method to be stateful, and make it
3544 available to TLS with the number defined in
3545 draft-ietf-tls-compression-04.txt.
3548 *) Add the ASN.1 structures and functions for CertificatePair, which
3549 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3551 CertificatePair ::= SEQUENCE {
3552 forward [0] Certificate OPTIONAL,
3553 reverse [1] Certificate OPTIONAL,
3554 -- at least one of the pair shall be present -- }
3556 Also implement the PEM functions to read and write certificate
3557 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3559 This needed to be defined, mostly for the sake of the LDAP
3560 attribute crossCertificatePair, but may prove useful elsewhere as
3564 *) Make it possible to inhibit symlinking of shared libraries in
3565 Makefile.shared, for Cygwin's sake.
3568 *) Extend the BIGNUM API by creating a function
3569 void BN_set_negative(BIGNUM *a, int neg);
3570 and a macro that behave like
3571 int BN_is_negative(const BIGNUM *a);
3573 to avoid the need to access 'a->neg' directly in applications.
3576 *) Implement fast modular reduction for pseudo-Mersenne primes
3577 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3578 EC_GROUP_new_curve_GFp() will now automatically use this
3580 [Nils Larsch <nla@trustcenter.de>]
3582 *) Add new lock type (CRYPTO_LOCK_BN).
3585 *) Change the ENGINE framework to automatically load engines
3586 dynamically from specific directories unless they could be
3587 found to already be built in or loaded. Move all the
3588 current engines except for the cryptodev one to a new
3590 The engines in engines/ are built as shared libraries if
3591 the "shared" options was given to ./Configure or ./config.
3592 Otherwise, they are inserted in libcrypto.a.
3593 /usr/local/ssl/engines is the default directory for dynamic
3594 engines, but that can be overriden at configure time through
3595 the usual use of --prefix and/or --openssldir, and at run
3596 time with the environment variable OPENSSL_ENGINES.
3597 [Geoff Thorpe and Richard Levitte]
3599 *) Add Makefile.shared, a helper makefile to build shared
3600 libraries. Addapt Makefile.org.
3603 *) Add version info to Win32 DLLs.
3604 [Peter 'Luna' Runestig" <peter@runestig.com>]
3606 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3607 can be added using this API to created arbitrary PKCS#12
3608 files while avoiding the low level API.
3610 New options to PKCS12_create(), key or cert can be NULL and
3611 will then be omitted from the output file. The encryption
3612 algorithm NIDs can be set to -1 for no encryption, the mac
3613 iteration count can be set to 0 to omit the mac.
3615 Enhance pkcs12 utility by making the -nokeys and -nocerts
3616 options work when creating a PKCS#12 file. New option -nomac
3617 to omit the mac, NONE can be set for an encryption algorithm.
3618 New code is modified to use the enhanced PKCS12_create()
3619 instead of the low level API.
3622 *) Extend ASN1 encoder to support indefinite length constructed
3623 encoding. This can output sequences tags and octet strings in
3624 this form. Modify pk7_asn1.c to support indefinite length
3625 encoding. This is experimental and needs additional code to
3626 be useful, such as an ASN1 bio and some enhanced streaming
3629 Extend template encode functionality so that tagging is passed
3630 down to the template encoder.
3633 *) Let 'openssl req' fail if an argument to '-newkey' is not
3634 recognized instead of using RSA as a default.
3637 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3638 As these are not official, they are not included in "ALL";
3639 the "ECCdraft" ciphersuite group alias can be used to select them.
3640 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3642 *) Add ECDH engine support.
3643 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3645 *) Add ECDH in new directory crypto/ecdh/.
3646 [Douglas Stebila (Sun Microsystems Laboratories)]
3648 *) Let BN_rand_range() abort with an error after 100 iterations
3649 without success (which indicates a broken PRNG).
3652 *) Change BN_mod_sqrt() so that it verifies that the input value
3653 is really the square of the return value. (Previously,
3654 BN_mod_sqrt would show GIGO behaviour.)
3657 *) Add named elliptic curves over binary fields from X9.62, SECG,
3658 and WAP/WTLS; add OIDs that were still missing.
3660 [Sheueling Chang Shantz and Douglas Stebila
3661 (Sun Microsystems Laboratories)]
3663 *) Extend the EC library for elliptic curves over binary fields
3664 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3667 EC_GF2m_simple_method
3671 EC_GROUP_new_curve_GF2m
3672 EC_GROUP_set_curve_GF2m
3673 EC_GROUP_get_curve_GF2m
3674 EC_POINT_set_affine_coordinates_GF2m
3675 EC_POINT_get_affine_coordinates_GF2m
3676 EC_POINT_set_compressed_coordinates_GF2m
3678 Point compression for binary fields is disabled by default for
3679 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3682 As binary polynomials are represented as BIGNUMs, various members
3683 of the EC_GROUP and EC_POINT data structures can be shared
3684 between the implementations for prime fields and binary fields;
3685 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3686 are essentially identical to their ..._GFp counterparts.
3687 (For simplicity, the '..._GFp' prefix has been dropped from
3688 various internal method names.)
3690 An internal 'field_div' method (similar to 'field_mul' and
3691 'field_sqr') has been added; this is used only for binary fields.
3693 [Sheueling Chang Shantz and Douglas Stebila
3694 (Sun Microsystems Laboratories)]
3696 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3697 through methods ('mul', 'precompute_mult').
3699 The generic implementations (now internally called 'ec_wNAF_mul'
3700 and 'ec_wNAF_precomputed_mult') remain the default if these
3701 methods are undefined.
3703 [Sheueling Chang Shantz and Douglas Stebila
3704 (Sun Microsystems Laboratories)]
3706 *) New function EC_GROUP_get_degree, which is defined through
3707 EC_METHOD. For curves over prime fields, this returns the bit
3708 length of the modulus.
3710 [Sheueling Chang Shantz and Douglas Stebila
3711 (Sun Microsystems Laboratories)]
3713 *) New functions EC_GROUP_dup, EC_POINT_dup.
3714 (These simply call ..._new and ..._copy).
3716 [Sheueling Chang Shantz and Douglas Stebila
3717 (Sun Microsystems Laboratories)]
3719 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3720 Polynomials are represented as BIGNUMs (where the sign bit is not
3721 used) in the following functions [macros]:
3724 BN_GF2m_sub [= BN_GF2m_add]
3725 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3726 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3727 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3729 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3730 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3731 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3732 BN_GF2m_cmp [= BN_ucmp]
3734 (Note that only the 'mod' functions are actually for fields GF(2^m).
3735 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3737 For some functions, an the irreducible polynomial defining a
3738 field can be given as an 'unsigned int[]' with strictly
3739 decreasing elements giving the indices of those bits that are set;
3740 i.e., p[] represents the polynomial
3741 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3743 p[0] > p[1] > ... > p[k] = 0.
3744 This applies to the following functions:
3749 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3750 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3752 BN_GF2m_mod_sqrt_arr
3753 BN_GF2m_mod_solve_quad_arr
3757 Conversion can be performed by the following functions:
3762 bntest.c has additional tests for binary polynomial arithmetic.
3764 Two implementations for BN_GF2m_mod_div() are available.
3765 The default algorithm simply uses BN_GF2m_mod_inv() and
3766 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3767 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3768 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3770 [Sheueling Chang Shantz and Douglas Stebila
3771 (Sun Microsystems Laboratories)]
3773 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3774 functionality is disabled at compile-time.
3775 [Douglas Stebila <douglas.stebila@sun.com>]
3777 *) Change default behaviour of 'openssl asn1parse' so that more
3778 information is visible when viewing, e.g., a certificate:
3780 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3781 mode the content of non-printable OCTET STRINGs is output in a
3782 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3783 avoid the appearance of a printable string.
3784 [Nils Larsch <nla@trustcenter.de>]
3786 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3788 EC_GROUP_set_asn1_flag()
3789 EC_GROUP_get_asn1_flag()
3790 EC_GROUP_set_point_conversion_form()
3791 EC_GROUP_get_point_conversion_form()
3792 These control ASN1 encoding details:
3793 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3794 has been set to OPENSSL_EC_NAMED_CURVE.
3795 - Points are encoded in uncompressed form by default; options for
3796 asn1_for are as for point2oct, namely
3797 POINT_CONVERSION_COMPRESSED
3798 POINT_CONVERSION_UNCOMPRESSED
3799 POINT_CONVERSION_HYBRID
3801 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3804 EC_GROUP_get0_seed()
3805 EC_GROUP_get_seed_len()
3806 This is used only for ASN1 purposes (so far).
3807 [Nils Larsch <nla@trustcenter.de>]
3809 *) Add 'field_type' member to EC_METHOD, which holds the NID
3810 of the appropriate field type OID. The new function
3811 EC_METHOD_get_field_type() returns this value.
3812 [Nils Larsch <nla@trustcenter.de>]
3817 EC_POINT_point2hex()
3818 EC_POINT_hex2point()
3819 providing useful interfaces to EC_POINT_point2oct() and
3820 EC_POINT_oct2point().
3821 [Nils Larsch <nla@trustcenter.de>]
3823 *) Change internals of the EC library so that the functions
3824 EC_GROUP_set_generator()
3825 EC_GROUP_get_generator()
3826 EC_GROUP_get_order()
3827 EC_GROUP_get_cofactor()
3828 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3829 to methods, which would lead to unnecessary code duplication when
3830 adding different types of curves.
3831 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3833 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3834 arithmetic, and such that modified wNAFs are generated
3835 (which avoid length expansion in many cases).
3838 *) Add a function EC_GROUP_check_discriminant() (defined via
3839 EC_METHOD) that verifies that the curve discriminant is non-zero.
3841 Add a function EC_GROUP_check() that makes some sanity tests
3842 on a EC_GROUP, its generator and order. This includes
3843 EC_GROUP_check_discriminant().
3844 [Nils Larsch <nla@trustcenter.de>]
3846 *) Add ECDSA in new directory crypto/ecdsa/.
3848 Add applications 'openssl ecparam' and 'openssl ecdsa'
3849 (these are based on 'openssl dsaparam' and 'openssl dsa').
3851 ECDSA support is also included in various other files across the
3852 library. Most notably,
3853 - 'openssl req' now has a '-newkey ecdsa:file' option;
3854 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3855 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3856 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3857 them suitable for ECDSA where domain parameters must be
3858 extracted before the specific public key;
3859 - ECDSA engine support has been added.
3860 [Nils Larsch <nla@trustcenter.de>]
3862 *) Include some named elliptic curves, and add OIDs from X9.62,
3863 SECG, and WAP/WTLS. Each curve can be obtained from the new
3865 EC_GROUP_new_by_curve_name(),
3866 and the list of available named curves can be obtained with
3867 EC_get_builtin_curves().
3868 Also add a 'curve_name' member to EC_GROUP objects, which can be
3870 EC_GROUP_set_curve_name()
3871 EC_GROUP_get_curve_name()
3872 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3874 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3875 was actually never needed) and in BN_mul(). The removal in BN_mul()
3876 required a small change in bn_mul_part_recursive() and the addition
3877 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3878 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3879 bn_sub_words() and bn_add_words() except they take arrays with
3883 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3885 *) Cleanse PEM buffers before freeing them since they may contain
3887 [Benjamin Bennett <ben@psc.edu>]
3889 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3890 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3891 authentication-only ciphersuites.
3894 *) Since AES128 and AES256 share a single mask bit in the logic of
3895 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3896 kludge to work properly if AES128 is available and AES256 isn't.
3899 *) Expand security boundary to match 1.1.1 module.
3902 *) Remove redundant features: hash file source, editing of test vectors
3903 modify fipsld to use external fips_premain.c signature.
3906 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3907 run algorithm test programs.
3910 *) Make algorithm test programs more tolerant of whitespace.
3913 *) Have SSL/TLS server implementation tolerate "mismatched" record
3914 protocol version while receiving ClientHello even if the
3915 ClientHello is fragmented. (The server can't insist on the
3916 particular protocol version it has chosen before the ServerHello
3917 message has informed the client about his choice.)
3920 *) Load error codes if they are not already present instead of using a
3921 static variable. This allows them to be cleanly unloaded and reloaded.
3924 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3926 *) Introduce limits to prevent malicious keys being able to
3927 cause a denial of service. (CVE-2006-2940)
3928 [Steve Henson, Bodo Moeller]
3930 *) Fix ASN.1 parsing of certain invalid structures that can result
3931 in a denial of service. (CVE-2006-2937) [Steve Henson]
3933 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3934 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3936 *) Fix SSL client code which could crash if connecting to a
3937 malicious SSLv2 server. (CVE-2006-4343)
3938 [Tavis Ormandy and Will Drewry, Google Security Team]
3940 *) Change ciphersuite string processing so that an explicit
3941 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3942 will no longer include "AES128-SHA"), and any other similar
3943 ciphersuite (same bitmap) from *other* protocol versions (so that
3944 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3945 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3946 changes from 0.9.8b and 0.9.8d.
3949 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3951 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3952 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3954 *) Change the Unix randomness entropy gathering to use poll() when
3955 possible instead of select(), since the latter has some
3956 undesirable limitations.
3957 [Darryl Miles via Richard Levitte and Bodo Moeller]
3959 *) Disable rogue ciphersuites:
3961 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3962 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3963 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3965 The latter two were purportedly from
3966 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3969 Also deactive the remaining ciphersuites from
3970 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3971 unofficial, and the ID has long expired.
3974 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3975 dual-core machines) and other potential thread-safety issues.
3978 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3980 *) Adapt fipsld and the build system to link against the validated FIPS
3981 module in FIPS mode.
3984 *) Fixes for VC++ 2005 build under Windows.
3987 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3988 from a Windows bash shell such as MSYS. It is autodetected from the
3989 "config" script when run from a VC++ environment. Modify standard VC++
3990 build to use fipscanister.o from the GNU make build.
3993 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3995 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3996 The value now differs depending on if you build for FIPS or not.
3997 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3998 safely run with a non-FIPSed libcrypto, as it may crash because of
3999 the difference induced by this change.
4002 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4004 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4005 (part of SSL_OP_ALL). This option used to disable the
4006 countermeasure against man-in-the-middle protocol-version
4007 rollback in the SSL 2.0 server implementation, which is a bad
4008 idea. (CVE-2005-2969)
4010 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4011 for Information Security, National Institute of Advanced Industrial
4012 Science and Technology [AIST], Japan)]
4014 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4015 mainly for FIPS compliance and not fully integrated at this stage.
4018 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4019 the exponentiation using a fixed-length exponent. (Otherwise,
4020 the information leaked through timing could expose the secret key
4021 after many signatures; cf. Bleichenbacher's attack on DSA with
4025 *) Make a new fixed-window mod_exp implementation the default for
4026 RSA, DSA, and DH private-key operations so that the sequence of
4027 squares and multiplies and the memory access pattern are
4028 independent of the particular secret key. This will mitigate
4029 cache-timing and potential related attacks.
4031 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4032 and this is automatically used by BN_mod_exp_mont() if the new flag
4033 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4034 will use this BN flag for private exponents unless the flag
4035 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4036 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4038 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4040 *) Change the client implementation for SSLv23_method() and
4041 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4042 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4043 (Previously, the SSL 2.0 backwards compatible Client Hello
4044 message format would be used even with SSL_OP_NO_SSLv2.)
4047 *) Add support for smime-type MIME parameter in S/MIME messages which some
4051 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4052 a threadsafe manner. Modify rsa code to use new function and add calls
4053 to dsa and dh code (which had race conditions before).
4056 *) Include the fixed error library code in the C error file definitions
4057 instead of fixing them up at runtime. This keeps the error code
4058 structures constant.
4061 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4063 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4066 *) Fixes for newer kerberos headers. NB: the casts are needed because
4067 the 'length' field is signed on one version and unsigned on another
4068 with no (?) obvious way to tell the difference, without these VC++
4069 complains. Also the "definition" of FAR (blank) is no longer included
4070 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4071 some needed definitions.
4074 *) Undo Cygwin change.
4077 *) Added support for proxy certificates according to RFC 3820.
4078 Because they may be a security thread to unaware applications,
4079 they must be explicitely allowed in run-time. See
4080 docs/HOWTO/proxy_certificates.txt for further information.
4083 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4085 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4086 server and client random values. Previously
4087 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4088 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4090 This change has negligible security impact because:
4092 1. Server and client random values still have 24 bytes of pseudo random
4095 2. Server and client random values are sent in the clear in the initial
4098 3. The master secret is derived using the premaster secret (48 bytes in
4099 size for static RSA ciphersuites) as well as client server and random
4102 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4105 [Stephen Henson, reported by UK NISCC]
4107 *) Use Windows randomness collection on Cygwin.
4110 *) Fix hang in EGD/PRNGD query when communication socket is closed
4111 prematurely by EGD/PRNGD.
4112 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4114 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4117 *) Back-port of selected performance improvements from development
4118 branch, as well as improved support for PowerPC platforms.
4121 *) Add lots of checks for memory allocation failure, error codes to indicate
4122 failure and freeing up memory if a failure occurs.
4123 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4125 *) Add new -passin argument to dgst.
4128 *) Perform some character comparisons of different types in X509_NAME_cmp:
4129 this is needed for some certificates that reencode DNs into UTF8Strings
4130 (in violation of RFC3280) and can't or wont issue name rollover
4134 *) Make an explicit check during certificate validation to see that
4135 the CA setting in each certificate on the chain is correct. As a
4136 side effect always do the following basic checks on extensions,
4137 not just when there's an associated purpose to the check:
4139 - if there is an unhandled critical extension (unless the user
4140 has chosen to ignore this fault)
4141 - if the path length has been exceeded (if one is set at all)
4142 - that certain extensions fit the associated purpose (if one has
4146 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4148 *) Avoid a race condition when CRLs are checked in a multi threaded
4149 environment. This would happen due to the reordering of the revoked
4150 entries during signature checking and serial number lookup. Now the
4151 encoding is cached and the serial number sort performed under a lock.
4152 Add new STACK function sk_is_sorted().
4155 *) Add Delta CRL to the extension code.
4158 *) Various fixes to s3_pkt.c so alerts are sent properly.
4159 [David Holmes <d.holmes@f5.com>]
4161 *) Reduce the chances of duplicate issuer name and serial numbers (in
4162 violation of RFC3280) using the OpenSSL certificate creation utilities.
4163 This is done by creating a random 64 bit value for the initial serial
4164 number when a serial number file is created or when a self signed
4165 certificate is created using 'openssl req -x509'. The initial serial
4166 number file is created using 'openssl x509 -next_serial' in CA.pl
4167 rather than being initialized to 1.
4170 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4172 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4173 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4174 [Joe Orton, Steve Henson]
4176 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4178 [Joe Orton, Steve Henson]
4180 *) Make it possible to have multiple active certificates with the same
4181 subject in the CA index file. This is done only if the keyword
4182 'unique_subject' is set to 'no' in the main CA section (default
4183 if 'CA_default') of the configuration file. The value is saved
4184 with the database itself in a separate index attribute file,
4185 named like the index file with '.attr' appended to the name.
4188 *) X509 verify fixes. Disable broken certificate workarounds when
4189 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4190 keyUsage extension present. Don't accept CRLs with unhandled critical
4191 extensions: since verify currently doesn't process CRL extensions this
4192 rejects a CRL with *any* critical extensions. Add new verify error codes
4196 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4197 A clarification of RFC2560 will require the use of OCTET STRINGs and
4198 some implementations cannot handle the current raw format. Since OpenSSL
4199 copies and compares OCSP nonces as opaque blobs without any attempt at
4200 parsing them this should not create any compatibility issues.
4203 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4204 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4205 this HMAC (and other) operations are several times slower than OpenSSL
4209 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4210 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4212 *) Use the correct content when signing type "other".
4215 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4217 *) Fix various bugs revealed by running the NISCC test suite:
4219 Stop out of bounds reads in the ASN1 code when presented with
4220 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4222 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4224 If verify callback ignores invalid public key errors don't try to check
4225 certificate signature with the NULL public key.
4229 *) New -ignore_err option in ocsp application to stop the server
4230 exiting on the first error in a request.
4233 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4234 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4238 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4239 extra data after the compression methods not only for TLS 1.0
4240 but also for SSL 3.0 (as required by the specification).
4241 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4243 *) Change X509_certificate_type() to mark the key as exported/exportable
4244 when it's 512 *bits* long, not 512 bytes.
4247 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4248 blocks during encryption.
4251 *) Various fixes to base64 BIO and non blocking I/O. On write
4252 flushes were not handled properly if the BIO retried. On read
4253 data was not being buffered properly and had various logic bugs.
4254 This also affects blocking I/O when the data being decoded is a
4258 *) Various S/MIME bugfixes and compatibility changes:
4259 output correct application/pkcs7 MIME type if
4260 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4261 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4262 of files as .eml work). Correctly handle very long lines in MIME
4266 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
4268 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4269 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4270 a protocol version number mismatch like a decryption error
4271 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4274 *) Turn on RSA blinding by default in the default implementation
4275 to avoid a timing attack. Applications that don't want it can call
4276 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4277 They would be ill-advised to do so in most cases.
4278 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4280 *) Change RSA blinding code so that it works when the PRNG is not
4281 seeded (in this case, the secret RSA exponent is abused as