5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
9 [mancha <mancha1@zoho.com>]
11 *) Fix some double frees. These are not thought to be exploitable.
12 [mancha <mancha1@zoho.com>]
14 *) A missing bounds check in the handling of the TLS heartbeat extension
15 can be used to reveal up to 64k of memory to a connected client or
18 Thanks for Neel Mehta of Google Security for discovering this bug and to
19 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
20 preparing the fix (CVE-2014-0160)
21 [Adam Langley, Bodo Moeller]
23 *) Fix for the attack described in the paper "Recovering OpenSSL
24 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
25 by Yuval Yarom and Naomi Benger. Details can be obtained from:
26 http://eprint.iacr.org/2014/140
28 Thanks to Yuval Yarom and Naomi Benger for discovering this
29 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
30 [Yuval Yarom and Naomi Benger]
32 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
33 this fixes a limiation in previous versions of OpenSSL.
36 *) Experimental encrypt-then-mac support.
38 Experimental support for encrypt then mac from
39 draft-gutmann-tls-encrypt-then-mac-02.txt
41 To enable it set the appropriate extension number (0x42 for the test
42 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
44 For non-compliant peers (i.e. just about everything) this should have no
47 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
51 *) Add callbacks supporting generation and retrieval of supplemental
53 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
55 *) Add EVP support for key wrapping algorithms, to avoid problems with
56 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
57 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
58 algorithms and include tests cases.
61 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
65 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
66 MGF1 digest and OAEP label.
69 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
70 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
71 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
74 *) Make openssl verify return errors.
75 [Chris Palmer <palmer@google.com> and Ben Laurie]
77 *) New function ASN1_TIME_diff to calculate the difference between two
78 ASN1_TIME structures or one structure and the current time.
81 *) Update fips_test_suite to support multiple command line options. New
82 test to induce all self test errors in sequence and check expected
86 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
87 sign or verify all in one operation.
90 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
91 test programs and fips_test_suite. Includes functionality to parse
92 the minimal script output of fipsalgest.pl directly.
95 *) Add authorisation parameter to FIPS_module_mode_set().
98 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
101 *) Use separate DRBG fields for internal and external flags. New function
102 FIPS_drbg_health_check() to perform on demand health checking. Add
103 generation tests to fips_test_suite with reduced health check interval to
104 demonstrate periodic health checking. Add "nodh" option to
105 fips_test_suite to skip very slow DH test.
108 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
112 *) More extensive health check for DRBG checking many more failure modes.
113 New function FIPS_selftest_drbg_all() to handle every possible DRBG
114 combination: call this in fips_test_suite.
117 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
118 and POST to handle Dual EC cases.
121 *) Add support for canonical generation of DSA parameter 'g'. See
124 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
125 POST to handle HMAC cases.
128 *) Add functions FIPS_module_version() and FIPS_module_version_text()
129 to return numerical and string versions of the FIPS module number.
132 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
133 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
134 outside the validated module in the FIPS capable OpenSSL.
137 *) Minor change to DRBG entropy callback semantics. In some cases
138 there is no multiple of the block length between min_len and
139 max_len. Allow the callback to return more than max_len bytes
140 of entropy but discard any extra: it is the callback's responsibility
141 to ensure that the extra data discarded does not impact the
142 requested amount of entropy.
145 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
146 information in FIPS186-3, SP800-57 and SP800-131A.
149 *) CCM support via EVP. Interface is very similar to GCM case except we
150 must supply all data in one chunk (i.e. no update, final) and the
151 message length must be supplied if AAD is used. Add algorithm test
155 *) Initial version of POST overhaul. Add POST callback to allow the status
156 of POST to be monitored and/or failures induced. Modify fips_test_suite
157 to use callback. Always run all selftests even if one fails.
160 *) XTS support including algorithm test driver in the fips_gcmtest program.
161 Note: this does increase the maximum key length from 32 to 64 bytes but
162 there should be no binary compatibility issues as existing applications
163 will never use XTS mode.
166 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
167 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
168 performs algorithm blocking for unapproved PRNG types. Also do not
169 set PRNG type in FIPS_mode_set(): leave this to the application.
170 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
171 the standard OpenSSL PRNG: set additional data to a date time vector.
174 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
175 This shouldn't present any incompatibility problems because applications
176 shouldn't be using these directly and any that are will need to rethink
177 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
180 *) Extensive self tests and health checking required by SP800-90 DRBG.
181 Remove strength parameter from FIPS_drbg_instantiate and always
182 instantiate at maximum supported strength.
185 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
188 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
191 *) New function DH_compute_key_padded() to compute a DH key and pad with
192 leading zeroes if needed: this complies with SP800-56A et al.
195 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
196 anything, incomplete, subject to change and largely untested at present.
199 *) Modify fipscanisteronly build option to only build the necessary object
200 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
203 *) Add experimental option FIPSSYMS to give all symbols in
204 fipscanister.o and FIPS or fips prefix. This will avoid
205 conflicts with future versions of OpenSSL. Add perl script
206 util/fipsas.pl to preprocess assembly language source files
207 and rename any affected symbols.
210 *) Add selftest checks and algorithm block of non-fips algorithms in
211 FIPS mode. Remove DES2 from selftests.
214 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
215 return internal method without any ENGINE dependencies. Add new
216 tiny fips sign and verify functions.
219 *) New build option no-ec2m to disable characteristic 2 code.
222 *) New build option "fipscanisteronly". This only builds fipscanister.o
223 and (currently) associated fips utilities. Uses the file Makefile.fips
224 instead of Makefile.org as the prototype.
227 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
228 Update fips_gcmtest to use IV generator.
231 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
232 setting output buffer to NULL. The *Final function must be
233 called although it will not retrieve any additional data. The tag
234 can be set or retrieved with a ctrl. The IV length is by default 12
235 bytes (96 bits) but can be set to an alternative value. If the IV
236 length exceeds the maximum IV length (currently 16 bytes) it cannot be
240 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
241 underlying do_cipher function handles all cipher semantics itself
242 including padding and finalisation. This is useful if (for example)
243 an ENGINE cipher handles block padding itself. The behaviour of
244 do_cipher is subtly changed if this flag is set: the return value
245 is the number of characters written to the output buffer (zero is
246 no longer an error code) or a negative error code. Also if the
247 input buffer is NULL and length 0 finalisation should be performed.
250 *) If a candidate issuer certificate is already part of the constructed
251 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
254 *) Improve forward-security support: add functions
256 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
257 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
259 for use by SSL/TLS servers; the callback function will be called whenever a
260 new session is created, and gets to decide whether the session may be
261 cached to make it resumable (return 0) or not (return 1). (As by the
262 SSL/TLS protocol specifications, the session_id sent by the server will be
263 empty to indicate that the session is not resumable; also, the server will
264 not generate RFC 4507 (RFC 5077) session tickets.)
266 A simple reasonable callback implementation is to return is_forward_secure.
267 This parameter will be set to 1 or 0 depending on the ciphersuite selected
268 by the SSL/TLS server library, indicating whether it can provide forward
270 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
272 *) New -verify_name option in command line utilities to set verification
276 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
277 Add CMAC pkey methods.
280 *) Experimental regnegotiation in s_server -www mode. If the client
281 browses /reneg connection is renegotiated. If /renegcert it is
282 renegotiated requesting a certificate.
285 *) Add an "external" session cache for debugging purposes to s_server. This
286 should help trace issues which normally are only apparent in deployed
287 multi-process servers.
290 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
291 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
292 BIO_set_cipher() and some obscure PEM functions were changed so they
293 can now return an error. The RAND changes required a change to the
294 RAND_METHOD structure.
297 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
298 a gcc attribute to warn if the result of a function is ignored. This
299 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
300 whose return value is often ignored.
303 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
305 *) Keep original DTLS digest and encryption contexts in retransmission
306 structures so we can use the previous session parameters if they need
307 to be resent. (CVE-2013-6450)
310 *) TLS pad extension: draft-agl-tls-padding-03
312 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
313 TLS client Hello record length value would otherwise be > 255 and
314 less that 512 pad with a dummy extension containing zeroes so it
315 is at least 512 bytes long.
317 [Adam Langley, Steve Henson]
319 *) Add functions to allocate and set the fields of an ECDSA_METHOD
321 [Douglas E. Engert, Steve Henson]
323 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
324 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
325 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
326 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
327 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
328 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
329 [Rob Stradling, Adam Langley]
331 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
332 difference in days and seconds between two tm or ASN1_TIME structures.
335 *) Add -rev test option to s_server to just reverse order of characters
336 received by client and send back to server. Also prints an abbreviated
337 summary of the connection parameters.
340 *) New option -brief for s_client and s_server to print out a brief summary
341 of connection parameters.
344 *) Add callbacks for arbitrary TLS extensions.
345 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
347 *) New option -crl_download in several openssl utilities to download CRLs
348 from CRLDP extension in certificates.
351 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
354 *) New function X509_CRL_diff to generate a delta CRL from the difference
355 of two full CRLs. Add support to "crl" utility.
358 *) New functions to set lookup_crls function and to retrieve
359 X509_STORE from X509_STORE_CTX.
362 *) Print out deprecated issuer and subject unique ID fields in
366 *) Extend OCSP I/O functions so they can be used for simple general purpose
367 HTTP as well as OCSP. New wrapper function which can be used to download
368 CRLs using the OCSP API.
371 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
374 *) SSL_CONF* functions. These provide a common framework for application
375 configuration using configuration files or command lines.
378 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
379 message callback and prints the results. Needs compile time option
380 "enable-ssl-trace". New options to s_client and s_server to enable
384 *) New ctrl and macro to retrieve supported points extensions.
385 Print out extension in s_server and s_client.
388 *) New functions to retrieve certificate signature and signature
392 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
396 *) New Suite B modes for TLS code. These use and enforce the requirements
397 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
398 only use Suite B curves. The Suite B modes can be set by using the
399 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
402 *) New chain verification flags for Suite B levels of security. Check
403 algorithms are acceptable when flags are set in X509_verify_cert.
406 *) Make tls1_check_chain return a set of flags indicating checks passed
407 by a certificate chain. Add additional tests to handle client
408 certificates: checks for matching certificate type and issuer name
412 *) If an attempt is made to use a signature algorithm not in the peer
413 preference list abort the handshake. If client has no suitable
414 signature algorithms in response to a certificate request do not
418 *) If server EC tmp key is not in client preference list abort handshake.
421 *) Add support for certificate stores in CERT structure. This makes it
422 possible to have different stores per SSL structure or one store in
423 the parent SSL_CTX. Include distint stores for certificate chain
424 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
425 to build and store a certificate chain in CERT structure: returing
426 an error if the chain cannot be built: this will allow applications
427 to test if a chain is correctly configured.
429 Note: if the CERT based stores are not set then the parent SSL_CTX
430 store is used to retain compatibility with existing behaviour.
434 *) New function ssl_set_client_disabled to set a ciphersuite disabled
435 mask based on the current session, check mask when sending client
436 hello and checking the requested ciphersuite.
439 *) New ctrls to retrieve and set certificate types in a certificate
440 request message. Print out received values in s_client. If certificate
441 types is not set with custom values set sensible values based on
442 supported signature algorithms.
445 *) Support for distinct client and server supported signature algorithms.
448 *) Add certificate callback. If set this is called whenever a certificate
449 is required by client or server. An application can decide which
450 certificate chain to present based on arbitrary criteria: for example
451 supported signature algorithms. Add very simple example to s_server.
452 This fixes many of the problems and restrictions of the existing client
453 certificate callback: for example you can now clear an existing
454 certificate and specify the whole chain.
457 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
458 the certificate can be used for (if anything). Set valid_flags field
459 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
460 to have similar checks in it.
462 Add new "cert_flags" field to CERT structure and include a "strict mode".
463 This enforces some TLS certificate requirements (such as only permitting
464 certificate signature algorithms contained in the supported algorithms
465 extension) which some implementations ignore: this option should be used
466 with caution as it could cause interoperability issues.
469 *) Update and tidy signature algorithm extension processing. Work out
470 shared signature algorithms based on preferences and peer algorithms
471 and print them out in s_client and s_server. Abort handshake if no
472 shared signature algorithms.
475 *) Add new functions to allow customised supported signature algorithms
476 for SSL and SSL_CTX structures. Add options to s_client and s_server
480 *) New function SSL_certs_clear() to delete all references to certificates
481 from an SSL structure. Before this once a certificate had been added
482 it couldn't be removed.
485 *) Integrate hostname, email address and IP address checking with certificate
486 verification. New verify options supporting checking in opensl utility.
489 *) Fixes and wildcard matching support to hostname and email checking
490 functions. Add manual page.
491 [Florian Weimer (Red Hat Product Security Team)]
493 *) New functions to check a hostname email or IP address against a
494 certificate. Add options x509 utility to print results of checks against
498 *) Fix OCSP checking.
499 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
501 *) Initial experimental support for explicitly trusted non-root CAs.
502 OpenSSL still tries to build a complete chain to a root but if an
503 intermediate CA has a trust setting included that is used. The first
504 setting is used: whether to trust (e.g., -addtrust option to the x509
508 *) Add -trusted_first option which attempts to find certificates in the
509 trusted store even if an untrusted chain is also supplied.
512 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
513 platform support for Linux and Android.
516 *) Support for linux-x32, ILP32 environment in x86_64 framework.
519 *) RFC 5878 (TLS Authorization Extensions) support.
520 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
522 *) Experimental multi-implementation support for FIPS capable OpenSSL.
523 When in FIPS mode the approved implementations are used as normal,
524 when not in FIPS mode the internal unapproved versions are used instead.
525 This means that the FIPS capable OpenSSL isn't forced to use the
526 (often lower perfomance) FIPS implementations outside FIPS mode.
529 *) Transparently support X9.42 DH parameters when calling
530 PEM_read_bio_DHparameters. This means existing applications can handle
531 the new parameter format automatically.
534 *) Initial experimental support for X9.42 DH parameter format: mainly
535 to support use of 'q' parameter for RFC5114 parameters.
538 *) Add DH parameters from RFC5114 including test data to dhtest.
541 *) Support for automatic EC temporary key parameter selection. If enabled
542 the most preferred EC parameters are automatically used instead of
543 hardcoded fixed parameters. Now a server just has to call:
544 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
545 support ECDH and use the most appropriate parameters.
548 *) Enhance and tidy EC curve and point format TLS extension code. Use
549 static structures instead of allocation if default values are used.
550 New ctrls to set curves we wish to support and to retrieve shared curves.
551 Print out shared curves in s_server. New options to s_server and s_client
552 to set list of supported curves.
555 *) New ctrls to retrieve supported signature algorithms and
556 supported curve values as an array of NIDs. Extend openssl utility
557 to print out received values.
560 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
561 between NIDs and the more common NIST names such as "P-256". Enhance
562 ecparam utility and ECC method to recognise the NIST names for curves.
565 *) Enhance SSL/TLS certificate chain handling to support different
566 chains for each certificate instead of one chain in the parent SSL_CTX.
569 *) Support for fixed DH ciphersuite client authentication: where both
570 server and client use DH certificates with common parameters.
573 *) Support for fixed DH ciphersuites: those requiring DH server
577 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
579 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
580 supporting platforms or when small records were transferred.
581 [Andy Polyakov, Steve Henson]
583 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
585 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
587 This addresses the flaw in CBC record processing discovered by
588 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
589 at: http://www.isg.rhul.ac.uk/tls/
591 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
592 Security Group at Royal Holloway, University of London
593 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
594 Emilia Käsper for the initial patch.
596 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
598 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
599 ciphersuites which can be exploited in a denial of service attack.
600 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
601 and detecting this bug and to Wolfgang Ettlinger
602 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
606 *) Return an error when checking OCSP signatures when key is NULL.
607 This fixes a DoS attack. (CVE-2013-0166)
610 *) Make openssl verify return errors.
611 [Chris Palmer <palmer@google.com> and Ben Laurie]
613 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
614 the right response is stapled. Also change SSL_get_certificate()
615 so it returns the certificate actually sent.
616 See http://rt.openssl.org/Ticket/Display.html?id=2836.
617 [Rob Stradling <rob.stradling@comodo.com>]
619 *) Fix possible deadlock when decoding public keys.
622 *) Don't use TLS 1.0 record version number in initial client hello
626 Changes between 1.0.1b and 1.0.1c [10 May 2012]
628 *) Sanity check record length before skipping explicit IV in TLS
629 1.2, 1.1 and DTLS to fix DoS attack.
631 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
632 fuzzing as a service testing platform.
636 *) Initialise tkeylen properly when encrypting CMS messages.
637 Thanks to Solar Designer of Openwall for reporting this issue.
640 *) In FIPS mode don't try to use composite ciphers as they are not
644 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
646 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
647 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
648 mean any application compiled against OpenSSL 1.0.0 headers setting
649 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
650 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
651 0x10000000L Any application which was previously compiled against
652 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
653 will need to be recompiled as a result. Letting be results in
654 inability to disable specifically TLS 1.1 and in client context,
655 in unlike event, limit maximum offered version to TLS 1.0 [see below].
658 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
659 disable just protocol X, but all protocols above X *if* there are
660 protocols *below* X still enabled. In more practical terms it means
661 that if application wants to disable TLS1.0 in favor of TLS1.1 and
662 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
663 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
667 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
669 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
670 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
671 in CRYPTO_realloc_clean.
673 Thanks to Tavis Ormandy, Google Security Team, for discovering this
674 issue and to Adam Langley <agl@chromium.org> for fixing it.
676 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
678 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
681 *) Workarounds for some broken servers that "hang" if a client hello
682 record length exceeds 255 bytes.
684 1. Do not use record version number > TLS 1.0 in initial client
685 hello: some (but not all) hanging servers will now work.
686 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
687 the number of ciphers sent in the client hello. This should be
688 set to an even number, such as 50, for example by passing:
689 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
690 Most broken servers should now work.
691 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
692 TLS 1.2 client support entirely.
695 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
698 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
700 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
701 STRING form instead of a DigestInfo.
704 *) The format used for MDC2 RSA signatures is inconsistent between EVP
705 and the RSA_sign/RSA_verify functions. This was made more apparent when
706 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
707 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
708 the correct format in RSA_verify so both forms transparently work.
711 *) Some servers which support TLS 1.0 can choke if we initially indicate
712 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
713 encrypted premaster secret. As a workaround use the maximum pemitted
714 client version in client hello, this should keep such servers happy
715 and still work with previous versions of OpenSSL.
718 *) Add support for TLS/DTLS heartbeats.
719 [Robin Seggelmann <seggelmann@fh-muenster.de>]
721 *) Add support for SCTP.
722 [Robin Seggelmann <seggelmann@fh-muenster.de>]
724 *) Improved PRNG seeding for VOS.
725 [Paul Green <Paul.Green@stratus.com>]
727 *) Extensive assembler packs updates, most notably:
729 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
730 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
731 - x86_64: bit-sliced AES implementation;
732 - ARM: NEON support, contemporary platforms optimizations;
733 - s390x: z196 support;
734 - *: GHASH and GF(2^m) multiplication implementations;
738 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
739 (removal of unnecessary code)
740 [Peter Sylvester <peter.sylvester@edelweb.fr>]
742 *) Add TLS key material exporter from RFC 5705.
745 *) Add DTLS-SRTP negotiation from RFC 5764.
748 *) Add Next Protocol Negotiation,
749 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
750 disabled with a no-npn flag to config or Configure. Code donated
752 [Adam Langley <agl@google.com> and Ben Laurie]
754 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
755 NIST-P256, NIST-P521, with constant-time single point multiplication on
756 typical inputs. Compiler support for the nonstandard type __uint128_t is
757 required to use this (present in gcc 4.4 and later, for 64-bit builds).
758 Code made available under Apache License version 2.0.
760 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
761 line to include this in your build of OpenSSL, and run "make depend" (or
762 "make update"). This enables the following EC_METHODs:
764 EC_GFp_nistp224_method()
765 EC_GFp_nistp256_method()
766 EC_GFp_nistp521_method()
768 EC_GROUP_new_by_curve_name() will automatically use these (while
769 EC_GROUP_new_curve_GFp() currently prefers the more flexible
771 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
773 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
774 all platforms. Move ssize_t definition from e_os.h to the public
775 header file e_os2.h as it now appears in public header file cms.h
778 *) New -sigopt option to the ca, req and x509 utilities. Additional
779 signature parameters can be passed using this option and in
783 *) Add RSA PSS signing function. This will generate and set the
784 appropriate AlgorithmIdentifiers for PSS based on those in the
785 corresponding EVP_MD_CTX structure. No application support yet.
788 *) Support for companion algorithm specific ASN1 signing routines.
789 New function ASN1_item_sign_ctx() signs a pre-initialised
790 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
791 the appropriate parameters.
794 *) Add new algorithm specific ASN1 verification initialisation function
795 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
796 handling will be the same no matter what EVP_PKEY_METHOD is used.
797 Add a PSS handler to support verification of PSS signatures: checked
798 against a number of sample certificates.
801 *) Add signature printing for PSS. Add PSS OIDs.
802 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
804 *) Add algorithm specific signature printing. An individual ASN1 method
805 can now print out signatures instead of the standard hex dump.
807 More complex signatures (e.g. PSS) can print out more meaningful
808 information. Include DSA version that prints out the signature
812 *) Password based recipient info support for CMS library: implementing
816 *) Split password based encryption into PBES2 and PBKDF2 functions. This
817 neatly separates the code into cipher and PBE sections and is required
818 for some algorithms that split PBES2 into separate pieces (such as
822 *) Session-handling fixes:
823 - Fix handling of connections that are resuming with a session ID,
824 but also support Session Tickets.
825 - Fix a bug that suppressed issuing of a new ticket if the client
826 presented a ticket with an expired session.
827 - Try to set the ticket lifetime hint to something reasonable.
828 - Make tickets shorter by excluding irrelevant information.
829 - On the client side, don't ignore renewed tickets.
830 [Adam Langley, Bodo Moeller (Google)]
832 *) Fix PSK session representation.
835 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
837 This work was sponsored by Intel.
840 *) Add GCM support to TLS library. Some custom code is needed to split
841 the IV between the fixed (from PRF) and explicit (from TLS record)
842 portions. This adds all GCM ciphersuites supported by RFC5288 and
843 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
844 add a special AESGCM string for GCM only.
847 *) Expand range of ctrls for AES GCM. Permit setting invocation
848 field on decrypt and retrieval of invocation field only on encrypt.
851 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
852 As required by RFC5289 these ciphersuites cannot be used if for
853 versions of TLS earlier than 1.2.
856 *) For FIPS capable OpenSSL interpret a NULL default public key method
857 as unset and return the appopriate default but do *not* set the default.
858 This means we can return the appopriate method in applications that
859 swicth between FIPS and non-FIPS modes.
862 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
863 ENGINE is used then we cannot handle that in the FIPS module so we
864 keep original code iff non-FIPS operations are allowed.
867 *) Add -attime option to openssl utilities.
868 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
870 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
873 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
874 FIPS EC methods unconditionally for now.
877 *) New build option no-ec2m to disable characteristic 2 code.
880 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
881 all cases can be covered as some introduce binary incompatibilities.
884 *) Redirect RSA operations to FIPS module including keygen,
885 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
888 *) Add similar low level API blocking to ciphers.
891 *) Low level digest APIs are not approved in FIPS mode: any attempt
892 to use these will cause a fatal error. Applications that *really* want
893 to use them can use the private_* version instead.
896 *) Redirect cipher operations to FIPS module for FIPS builds.
899 *) Redirect digest operations to FIPS module for FIPS builds.
902 *) Update build system to add "fips" flag which will link in fipscanister.o
903 for static and shared library builds embedding a signature if needed.
906 *) Output TLS supported curves in preference order instead of numerical
907 order. This is currently hardcoded for the highest order curves first.
908 This should be configurable so applications can judge speed vs strength.
911 *) Add TLS v1.2 server support for client authentication.
914 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
918 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
919 FIPS modules versions.
922 *) Add TLS v1.2 client side support for client authentication. Keep cache
923 of handshake records longer as we don't know the hash algorithm to use
924 until after the certificate request message is received.
927 *) Initial TLS v1.2 client support. Add a default signature algorithms
928 extension including all the algorithms we support. Parse new signature
929 format in client key exchange. Relax some ECC signing restrictions for
930 TLS v1.2 as indicated in RFC5246.
933 *) Add server support for TLS v1.2 signature algorithms extension. Switch
934 to new signature format when needed using client digest preference.
935 All server ciphersuites should now work correctly in TLS v1.2. No client
936 support yet and no support for client certificates.
939 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
940 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
941 ciphersuites. At present only RSA key exchange ciphersuites work with
942 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
943 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
944 and version checking.
947 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
948 with this defined it will not be affected by any changes to ssl internal
949 structures. Add several utility functions to allow openssl application
950 to work with OPENSSL_NO_SSL_INTERN defined.
954 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
956 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
959 *) Permit abbreviated handshakes when renegotiating using the function
960 SSL_renegotiate_abbreviated().
961 [Robin Seggelmann <seggelmann@fh-muenster.de>]
963 *) Add call to ENGINE_register_all_complete() to
964 ENGINE_load_builtin_engines(), so some implementations get used
965 automatically instead of needing explicit application support.
968 *) Add support for TLS key exporter as described in RFC5705.
969 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
971 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
972 a few changes are required:
974 Add SSL_OP_NO_TLSv1_1 flag.
976 Update version checking logic to handle version 1.1.
977 Add explicit IV handling (ported from DTLS code).
978 Add command line options to s_client/s_server.
981 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
983 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
985 This addresses the flaw in CBC record processing discovered by
986 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
987 at: http://www.isg.rhul.ac.uk/tls/
989 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
990 Security Group at Royal Holloway, University of London
991 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
992 Emilia Käsper for the initial patch.
994 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
996 *) Return an error when checking OCSP signatures when key is NULL.
997 This fixes a DoS attack. (CVE-2013-0166)
1000 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
1001 the right response is stapled. Also change SSL_get_certificate()
1002 so it returns the certificate actually sent.
1003 See http://rt.openssl.org/Ticket/Display.html?id=2836.
1004 (This is a backport)
1005 [Rob Stradling <rob.stradling@comodo.com>]
1007 *) Fix possible deadlock when decoding public keys.
1010 Changes between 1.0.0i and 1.0.0j [10 May 2012]
1012 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
1015 *) Sanity check record length before skipping explicit IV in DTLS
1018 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1019 fuzzing as a service testing platform.
1023 *) Initialise tkeylen properly when encrypting CMS messages.
1024 Thanks to Solar Designer of Openwall for reporting this issue.
1027 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1029 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1030 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1031 in CRYPTO_realloc_clean.
1033 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1034 issue and to Adam Langley <agl@chromium.org> for fixing it.
1036 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1038 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1040 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1041 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1042 content decryption and always return the same error. Note: this attack
1043 needs on average 2^20 messages so it only affects automated senders. The
1044 old behaviour can be reenabled in the CMS code by setting the
1045 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1046 an MMA defence is not necessary.
1047 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1048 this issue. (CVE-2012-0884)
1051 *) Fix CVE-2011-4619: make sure we really are receiving a
1052 client hello before rejecting multiple SGC restarts. Thanks to
1053 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1056 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1058 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1059 Thanks to Antonio Martin, Enterprise Secure Access Research and
1060 Development, Cisco Systems, Inc. for discovering this bug and
1061 preparing a fix. (CVE-2012-0050)
1064 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1066 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1067 of the Vaudenay padding oracle attack on CBC mode encryption
1068 which enables an efficient plaintext recovery attack against
1069 the OpenSSL implementation of DTLS. Their attack exploits timing
1070 differences arising during decryption processing. A research
1071 paper describing this attack can be found at:
1072 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1073 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1074 Security Group at Royal Holloway, University of London
1075 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1076 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1077 for preparing the fix. (CVE-2011-4108)
1078 [Robin Seggelmann, Michael Tuexen]
1080 *) Clear bytes used for block padding of SSL 3.0 records.
1082 [Adam Langley (Google)]
1084 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1085 Kadianakis <desnacked@gmail.com> for discovering this issue and
1086 Adam Langley for preparing the fix. (CVE-2011-4619)
1087 [Adam Langley (Google)]
1089 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1090 [Andrey Kulikov <amdeich@gmail.com>]
1092 *) Prevent malformed RFC3779 data triggering an assertion failure.
1093 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1094 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1095 [Rob Austein <sra@hactrn.net>]
1097 *) Improved PRNG seeding for VOS.
1098 [Paul Green <Paul.Green@stratus.com>]
1100 *) Fix ssl_ciph.c set-up race.
1101 [Adam Langley (Google)]
1103 *) Fix spurious failures in ecdsatest.c.
1104 [Emilia Käsper (Google)]
1106 *) Fix the BIO_f_buffer() implementation (which was mixing different
1107 interpretations of the '..._len' fields).
1108 [Adam Langley (Google)]
1110 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1111 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1112 threads won't reuse the same blinding coefficients.
1114 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1115 lock to call BN_BLINDING_invert_ex, and avoids one use of
1116 BN_BLINDING_update for each BN_BLINDING structure (previously,
1117 the last update always remained unused).
1118 [Emilia Käsper (Google)]
1120 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1121 [Bob Buckholz (Google)]
1123 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1125 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1126 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1127 [Kaspar Brand <ossl@velox.ch>]
1129 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1130 for multi-threaded use of ECDH. (CVE-2011-3210)
1131 [Adam Langley (Google)]
1133 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1136 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1137 signature public key algorithm by using OID xref utilities instead.
1138 Before this you could only use some ECC ciphersuites with SHA1 only.
1141 *) Add protection against ECDSA timing attacks as mentioned in the paper
1142 by Billy Bob Brumley and Nicola Tuveri, see:
1144 http://eprint.iacr.org/2011/232.pdf
1146 [Billy Bob Brumley and Nicola Tuveri]
1148 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1150 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1151 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1153 *) Fix bug in string printing code: if *any* escaping is enabled we must
1154 escape the escape character (backslash) or the resulting string is
1158 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1160 *) Disable code workaround for ancient and obsolete Netscape browsers
1161 and servers: an attacker can use it in a ciphersuite downgrade attack.
1162 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1165 *) Fixed J-PAKE implementation error, originally discovered by
1166 Sebastien Martini, further info and confirmation from Stefan
1167 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1170 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1172 *) Fix extension code to avoid race conditions which can result in a buffer
1173 overrun vulnerability: resumed sessions must not be modified as they can
1174 be shared by multiple threads. CVE-2010-3864
1177 *) Fix WIN32 build system to correctly link an ENGINE directory into
1181 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1183 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1185 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1187 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1189 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1190 context. The operation can be customised via the ctrl mechanism in
1191 case ENGINEs want to include additional functionality.
1194 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1197 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1198 output hashes compatible with older versions of OpenSSL.
1199 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1201 *) Fix compression algorithm handling: if resuming a session use the
1202 compression algorithm of the resumed session instead of determining
1203 it from client hello again. Don't allow server to change algorithm.
1206 *) Add load_crls() function to apps tidying load_certs() too. Add option
1207 to verify utility to allow additional CRLs to be included.
1210 *) Update OCSP request code to permit adding custom headers to the request:
1211 some responders need this.
1214 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1216 [Julia Lawall <julia@diku.dk>]
1218 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1219 needlessly dereferenced structures, used obsolete functions and
1220 didn't handle all updated verify codes correctly.
1223 *) Disable MD2 in the default configuration.
1226 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1227 indicate the initial BIO being pushed or popped. This makes it possible
1228 to determine whether the BIO is the one explicitly called or as a result
1229 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1230 it handles reference counts correctly and doesn't zero out the I/O bio
1231 when it is not being explicitly popped. WARNING: applications which
1232 included workarounds for the old buggy behaviour will need to be modified
1233 or they could free up already freed BIOs.
1236 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1237 renaming to all platforms (within the 0.9.8 branch, this was
1238 done conditionally on Netware platforms to avoid a name clash).
1239 [Guenter <lists@gknw.net>]
1241 *) Add ECDHE and PSK support to DTLS.
1242 [Michael Tuexen <tuexen@fh-muenster.de>]
1244 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1248 *) Add "missing" function EVP_MD_flags() (without this the only way to
1249 retrieve a digest flags is by accessing the structure directly. Update
1250 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1251 or cipher is registered as in the "from" argument. Print out all
1252 registered digests in the dgst usage message instead of manually
1253 attempting to work them out.
1256 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1257 this allows the use of compression and extensions. Change default cipher
1258 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1259 by default unless an application cipher string requests it.
1262 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1263 key ids to find matching certificates and keys but some PKCS#12 files
1264 don't follow the (somewhat unwritten) rules and this strategy fails.
1265 Now just gather all certificates together and the first private key
1266 then look for the first certificate that matches the key.
1269 *) Support use of registered digest and cipher names for dgst and cipher
1270 commands instead of having to add each one as a special case. So now
1277 openssl dgst -sha256 foo
1279 and this works for ENGINE based algorithms too.
1283 *) Update Gost ENGINE to support parameter files.
1284 [Victor B. Wagner <vitus@cryptocom.ru>]
1286 *) Support GeneralizedTime in ca utility.
1287 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1289 *) Enhance the hash format used for certificate directory links. The new
1290 form uses the canonical encoding (meaning equivalent names will work
1291 even if they aren't identical) and uses SHA1 instead of MD5. This form
1292 is incompatible with the older format and as a result c_rehash should
1293 be used to rebuild symbolic links.
1296 *) Make PKCS#8 the default write format for private keys, replacing the
1297 traditional format. This form is standardised, more secure and doesn't
1298 include an implicit MD5 dependency.
1301 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1302 committed to OpenSSL should pass this lot as a minimum.
1305 *) Add session ticket override functionality for use by EAP-FAST.
1306 [Jouni Malinen <j@w1.fi>]
1308 *) Modify HMAC functions to return a value. Since these can be implemented
1309 in an ENGINE errors can occur.
1312 *) Type-checked OBJ_bsearch_ex.
1315 *) Type-checked OBJ_bsearch. Also some constification necessitated
1316 by type-checking. Still to come: TXT_DB, bsearch(?),
1317 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1321 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1322 seconds to a tm structure directly, instead of going through OS
1323 specific date routines. This avoids any issues with OS routines such
1324 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1325 and X509_time_adj_ex() to cover the extended range. The existing
1326 X509_time_adj() is still usable and will no longer have any date issues.
1329 *) Delta CRL support. New use deltas option which will attempt to locate
1330 and search any appropriate delta CRLs available.
1332 This work was sponsored by Google.
1335 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1336 code and add additional score elements. Validate alternate CRL paths
1337 as part of the CRL checking and indicate a new error "CRL path validation
1338 error" in this case. Applications wanting additional details can use
1339 the verify callback and check the new "parent" field. If this is not
1340 NULL CRL path validation is taking place. Existing applications wont
1341 see this because it requires extended CRL support which is off by
1344 This work was sponsored by Google.
1347 *) Support for freshest CRL extension.
1349 This work was sponsored by Google.
1352 *) Initial indirect CRL support. Currently only supported in the CRLs
1353 passed directly and not via lookup. Process certificate issuer
1354 CRL entry extension and lookup CRL entries by bother issuer name
1355 and serial number. Check and process CRL issuer entry in IDP extension.
1357 This work was sponsored by Google.
1360 *) Add support for distinct certificate and CRL paths. The CRL issuer
1361 certificate is validated separately in this case. Only enabled if
1362 an extended CRL support flag is set: this flag will enable additional
1363 CRL functionality in future.
1365 This work was sponsored by Google.
1368 *) Add support for policy mappings extension.
1370 This work was sponsored by Google.
1373 *) Fixes to pathlength constraint, self issued certificate handling,
1374 policy processing to align with RFC3280 and PKITS tests.
1376 This work was sponsored by Google.
1379 *) Support for name constraints certificate extension. DN, email, DNS
1380 and URI types are currently supported.
1382 This work was sponsored by Google.
1385 *) To cater for systems that provide a pointer-based thread ID rather
1386 than numeric, deprecate the current numeric thread ID mechanism and
1387 replace it with a structure and associated callback type. This
1388 mechanism allows a numeric "hash" to be extracted from a thread ID in
1389 either case, and on platforms where pointers are larger than 'long',
1390 mixing is done to help ensure the numeric 'hash' is usable even if it
1391 can't be guaranteed unique. The default mechanism is to use "&errno"
1392 as a pointer-based thread ID to distinguish between threads.
1394 Applications that want to provide their own thread IDs should now use
1395 CRYPTO_THREADID_set_callback() to register a callback that will call
1396 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1398 Note that ERR_remove_state() is now deprecated, because it is tied
1399 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1400 to free the current thread's error state should be replaced by
1401 ERR_remove_thread_state(NULL).
1403 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1404 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1405 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1406 application was previously providing a numeric thread callback that
1407 was inappropriate for distinguishing threads, then uniqueness might
1408 have been obtained with &errno that happened immediately in the
1409 intermediate development versions of OpenSSL; this is no longer the
1410 case, the numeric thread callback will now override the automatic use
1412 [Geoff Thorpe, with help from Bodo Moeller]
1414 *) Initial support for different CRL issuing certificates. This covers a
1415 simple case where the self issued certificates in the chain exist and
1416 the real CRL issuer is higher in the existing chain.
1418 This work was sponsored by Google.
1421 *) Removed effectively defunct crypto/store from the build.
1424 *) Revamp of STACK to provide stronger type-checking. Still to come:
1425 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1426 ASN1_STRING, CONF_VALUE.
1429 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1430 RAM on SSL connections. This option can save about 34k per idle SSL.
1433 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1434 STACK, TXT_DB, bsearch, qsort.
1437 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1438 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1439 support for data, signedData, compressedData, digestedData and
1440 encryptedData, envelopedData types included. Scripts to check against
1441 RFC4134 examples draft and interop and consistency checks of many
1442 content types and variants.
1445 *) Add options to enc utility to support use of zlib compression BIO.
1448 *) Extend mk1mf to support importing of options and assembly language
1449 files from Configure script, currently only included in VC-WIN32.
1450 The assembly language rules can now optionally generate the source
1451 files from the associated perl scripts.
1454 *) Implement remaining functionality needed to support GOST ciphersuites.
1455 Interop testing has been performed using CryptoPro implementations.
1456 [Victor B. Wagner <vitus@cryptocom.ru>]
1458 *) s390x assembler pack.
1461 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1465 *) Implement Opaque PRF Input TLS extension as specified in
1466 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1467 official specification yet and no extension type assignment by
1468 IANA exists, this extension (for now) will have to be explicitly
1469 enabled when building OpenSSL by providing the extension number
1470 to use. For example, specify an option
1472 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1474 to the "config" or "Configure" script to enable the extension,
1475 assuming extension number 0x9527 (which is a completely arbitrary
1476 and unofficial assignment based on the MD5 hash of the Internet
1477 Draft). Note that by doing so, you potentially lose
1478 interoperability with other TLS implementations since these might
1479 be using the same extension number for other purposes.
1481 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1482 opaque PRF input value to use in the handshake. This will create
1483 an interal copy of the length-'len' string at 'src', and will
1484 return non-zero for success.
1486 To get more control and flexibility, provide a callback function
1489 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1490 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1494 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1497 Callback function 'cb' will be called in handshakes, and is
1498 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1499 Argument 'arg' is for application purposes (the value as given to
1500 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1501 be provided to the callback function). The callback function
1502 has to return non-zero to report success: usually 1 to use opaque
1503 PRF input just if possible, or 2 to enforce use of the opaque PRF
1504 input. In the latter case, the library will abort the handshake
1505 if opaque PRF input is not successfully negotiated.
1507 Arguments 'peerinput' and 'len' given to the callback function
1508 will always be NULL and 0 in the case of a client. A server will
1509 see the client's opaque PRF input through these variables if
1510 available (NULL and 0 otherwise). Note that if the server
1511 provides an opaque PRF input, the length must be the same as the
1512 length of the client's opaque PRF input.
1514 Note that the callback function will only be called when creating
1515 a new session (session resumption can resume whatever was
1516 previously negotiated), and will not be called in SSL 2.0
1517 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1518 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1519 for applications that need to enforce opaque PRF input.
1523 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1526 [Victor B. Wagner <vitus@cryptocom.ru>]
1528 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1529 RFC4507bis. The encrypted ticket format is an encrypted encoded
1530 SSL_SESSION structure, that way new session features are automatically
1533 If a client application caches session in an SSL_SESSION structure
1534 support is transparent because tickets are now stored in the encoded
1537 The SSL_CTX structure automatically generates keys for ticket
1538 protection in servers so again support should be possible
1539 with no application modification.
1541 If a client or server wishes to disable RFC4507 support then the option
1542 SSL_OP_NO_TICKET can be set.
1544 Add a TLS extension debugging callback to allow the contents of any client
1545 or server extensions to be examined.
1547 This work was sponsored by Google.
1550 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1551 OpenSSL should now compile cleanly on gcc 4.2
1552 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1554 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1555 support including streaming MAC support: this is required for GOST
1556 ciphersuite support.
1557 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1559 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1560 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1561 to output in BER and PEM format.
1564 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1565 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1566 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1567 ENGINE support for HMAC keys which are unextractable. New -mac and
1568 -macopt options to dgst utility.
1571 *) New option -sigopt to dgst utility. Update dgst to use
1572 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1573 alternative signing paramaters such as X9.31 or PSS in the dgst
1577 *) Change ssl_cipher_apply_rule(), the internal function that does
1578 the work each time a ciphersuite string requests enabling
1579 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1580 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1581 the order of disabled ciphersuites such that those ciphersuites
1582 that most recently went from enabled to disabled not only stay
1583 in order with respect to each other, but also have higher priority
1584 than other disabled ciphersuites the next time ciphersuites are
1587 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1588 the same ciphersuites as with "HIGH" alone, but in a specific
1589 order where the PSK ciphersuites come first (since they are the
1590 most recently disabled ciphersuites when "HIGH" is parsed).
1592 Also, change ssl_create_cipher_list() (using this new
1593 funcionality) such that between otherwise identical
1594 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1598 *) Change ssl_create_cipher_list() so that it automatically
1599 arranges the ciphersuites in reasonable order before starting
1600 to process the rule string. Thus, the definition for "DEFAULT"
1601 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1602 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1603 This makes it much easier to arrive at a reasonable default order
1604 in applications for which anonymous ciphers are OK (meaning
1605 that you can't actually use DEFAULT).
1606 [Bodo Moeller; suggested by Victor Duchovni]
1608 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1609 processing) into multiple integers instead of setting
1610 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1611 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1612 (These masks as well as the individual bit definitions are hidden
1613 away into the non-exported interface ssl/ssl_locl.h, so this
1614 change to the definition of the SSL_CIPHER structure shouldn't
1615 affect applications.) This give us more bits for each of these
1616 categories, so there is no longer a need to coagulate AES128 and
1617 AES256 into a single algorithm bit, and to coagulate Camellia128
1618 and Camellia256 into a single algorithm bit, which has led to all
1621 Thus, among other things, the kludge introduced in 0.9.7m and
1622 0.9.8e for masking out AES256 independently of AES128 or masking
1623 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1625 With the change, we also introduce new ciphersuite aliases that
1626 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1630 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1631 Use the leftmost N bytes of the signature input if the input is
1632 larger than the prime q (with N being the size in bytes of q).
1635 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1636 it yet and it is largely untested.
1639 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1642 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1643 some compilers (gcc 4.2 and later) reject their use. Safestack is
1644 reimplemented. Update ASN1 to avoid use of legacy functions.
1647 *) Win32/64 targets are linked with Winsock2.
1650 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1651 to external functions. This can be used to increase CRL handling
1652 efficiency especially when CRLs are very large by (for example) storing
1653 the CRL revoked certificates in a database.
1656 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1657 new CRLs added to a directory can be used. New command line option
1658 -verify_return_error to s_client and s_server. This causes real errors
1659 to be returned by the verify callback instead of carrying on no matter
1660 what. This reflects the way a "real world" verify callback would behave.
1663 *) GOST engine, supporting several GOST algorithms and public key formats.
1664 Kindly donated by Cryptocom.
1667 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1668 partitioned by DP are handled but no indirect CRL or reason partitioning
1669 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1670 selected via a scoring technique which handles IDP and AKID in CRLs.
1673 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1674 will ultimately be used for all verify operations: this will remove the
1675 X509_STORE dependency on certificate verification and allow alternative
1676 lookup methods. X509_STORE based implementations of these two callbacks.
1679 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1680 Modify get_crl() to find a valid (unexpired) CRL if possible.
1683 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1684 this would be called X509_CRL_cmp() but that name is already used by
1685 a function that just compares CRL issuer names. Cache several CRL
1686 extensions in X509_CRL structure and cache CRLDP in X509.
1689 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1690 this maps equivalent X509_NAME structures into a consistent structure.
1691 Name comparison can then be performed rapidly using memcmp().
1694 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1698 *) Allow digests to supply their own micalg string for S/MIME type using
1699 the ctrl EVP_MD_CTRL_MICALG.
1702 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1703 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1704 ctrl. It can then customise the structure before and/or after signing
1708 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1709 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1710 to free up any added signature OIDs.
1713 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1714 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1715 digest and cipher tables. New options added to openssl utility:
1716 list-message-digest-algorithms and list-cipher-algorithms.
1719 *) Change the array representation of binary polynomials: the list
1720 of degrees of non-zero coefficients is now terminated with -1.
1721 Previously it was terminated with 0, which was also part of the
1722 value; thus, the array representation was not applicable to
1723 polynomials where t^0 has coefficient zero. This change makes
1724 the array representation useful in a more general context.
1727 *) Various modifications and fixes to SSL/TLS cipher string
1728 handling. For ECC, the code now distinguishes between fixed ECDH
1729 with RSA certificates on the one hand and with ECDSA certificates
1730 on the other hand, since these are separate ciphersuites. The
1731 unused code for Fortezza ciphersuites has been removed.
1733 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1734 (not "ECDHE"). For consistency with the code for DH
1735 certificates, use of ECDH certificates is now considered ECDH
1736 authentication, not RSA or ECDSA authentication (the latter is
1737 merely the CA's signing algorithm and not actively used in the
1740 The temporary ciphersuite alias "ECCdraft" is no longer
1741 available, and ECC ciphersuites are no longer excluded from "ALL"
1742 and "DEFAULT". The following aliases now exist for RFC 4492
1743 ciphersuites, most of these by analogy with the DH case:
1745 kECDHr - ECDH cert, signed with RSA
1746 kECDHe - ECDH cert, signed with ECDSA
1747 kECDH - ECDH cert (signed with either RSA or ECDSA)
1748 kEECDH - ephemeral ECDH
1749 ECDH - ECDH cert or ephemeral ECDH
1755 AECDH - anonymous ECDH
1756 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1760 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1761 Use correct micalg parameters depending on digest(s) in signed message.
1764 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1765 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1768 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1769 an engine to register a method. Add ENGINE lookups for methods and
1770 functional reference processing.
1773 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1774 EVP_{Sign,Verify}* which allow an application to customise the signature
1778 *) New -resign option to smime utility. This adds one or more signers
1779 to an existing PKCS#7 signedData structure. Also -md option to use an
1780 alternative message digest algorithm for signing.
1783 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1784 create PKCS7 structures containing multiple signers. Update smime
1785 application to support multiple signers.
1788 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1792 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1793 Reorganize PBE internals to lookup from a static table using NIDs,
1794 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1795 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1796 PRF which will be automatically used with PBES2.
1799 *) Replace the algorithm specific calls to generate keys in "req" with the
1803 *) Update PKCS#7 enveloped data routines to use new API. This is now
1804 supported by any public key method supporting the encrypt operation. A
1805 ctrl is added to allow the public key algorithm to examine or modify
1806 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1810 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1811 a default digest type to use. In most cases this will be SHA1 but some
1812 algorithms (such as GOST) need to specify an alternative digest. The
1813 return value indicates how strong the prefernce is 1 means optional and
1814 2 is mandatory (that is it is the only supported type). Modify
1815 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1816 use the default md. Update openssl utilities to use the default digest
1817 type for signing if it is not explicitly indicated.
1820 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1821 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1822 signing method from the key type. This effectively removes the link
1823 between digests and public key types.
1826 *) Add an OID cross reference table and utility functions. Its purpose is to
1827 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1828 rsaEncryption. This will allow some of the algorithm specific hackery
1829 needed to use the correct OID to be removed.
1832 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1833 structures for PKCS7_sign(). They are now set up by the relevant public
1837 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1840 *) Add support for key derivation (agreement) in the API, DH method and
1844 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1845 public and private key formats. As a side effect these add additional
1846 command line functionality not previously available: DSA signatures can be
1847 generated and verified using pkeyutl and DH key support and generation in
1852 [Oliver Tappe <zooey@hirschkaefer.de>]
1854 *) New make target "install_html_docs" installs HTML renditions of the
1856 [Oliver Tappe <zooey@hirschkaefer.de>]
1858 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1859 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1860 support key and parameter generation and add initial key generation
1861 functionality for RSA.
1864 *) Add functions for main EVP_PKEY_method operations. The undocumented
1865 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1866 EVP_PKEY_{encrypt,decrypt}_old.
1869 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1870 key API, doesn't do much yet.
1873 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1874 public key algorithms. New option to openssl utility:
1875 "list-public-key-algorithms" to print out info.
1878 *) Implement the Supported Elliptic Curves Extension for
1879 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1882 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1883 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1886 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1887 utilities such as rsa, dsa, dsaparam etc except they process any key
1891 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1892 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1893 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1897 *) Initial support for pluggable public key ASN1.
1898 De-spaghettify the public key ASN1 handling. Move public and private
1899 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1900 algorithm specific handling to a single module within the relevant
1901 algorithm directory. Add functions to allow (near) opaque processing
1902 of public and private key structures.
1905 *) Implement the Supported Point Formats Extension for
1906 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1909 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1910 for the psk identity [hint] and the psk callback functions to the
1911 SSL_SESSION, SSL and SSL_CTX structure.
1914 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1918 SSL_CTX_use_psk_identity_hint
1919 SSL_get_psk_identity_hint
1920 SSL_get_psk_identity
1921 SSL_use_psk_identity_hint
1923 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1925 *) Add RFC 3161 compliant time stamp request creation, response generation
1926 and response verification functionality.
1927 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1929 *) Add initial support for TLS extensions, specifically for the server_name
1930 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1931 have new members for a host name. The SSL data structure has an
1932 additional member SSL_CTX *initial_ctx so that new sessions can be
1933 stored in that context to allow for session resumption, even after the
1934 SSL has been switched to a new SSL_CTX in reaction to a client's
1935 server_name extension.
1937 New functions (subject to change):
1939 SSL_get_servername()
1940 SSL_get_servername_type()
1943 New CTRL codes and macros (subject to change):
1945 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1946 - SSL_CTX_set_tlsext_servername_callback()
1947 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1948 - SSL_CTX_set_tlsext_servername_arg()
1949 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1951 openssl s_client has a new '-servername ...' option.
1953 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1954 '-key2 ...', '-servername_fatal' (subject to change). This allows
1955 testing the HostName extension for a specific single host name ('-cert'
1956 and '-key' remain fallbacks for handshakes without HostName
1957 negotiation). If the unrecogninzed_name alert has to be sent, this by
1958 default is a warning; it becomes fatal with the '-servername_fatal'
1961 [Peter Sylvester, Remy Allais, Christophe Renou]
1963 *) Whirlpool hash implementation is added.
1966 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1967 bn(64,32). Because of instruction set limitations it doesn't have
1968 any negative impact on performance. This was done mostly in order
1969 to make it possible to share assembler modules, such as bn_mul_mont
1970 implementations, between 32- and 64-bit builds without hassle.
1973 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1974 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1978 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1979 dedicated Montgomery multiplication procedure, is introduced.
1980 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1981 "64-bit" performance on certain 32-bit targets.
1984 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1985 in SSL structures. New SSL ctrl to set maximum send fragment size.
1986 Save memory by seeting the I/O buffer sizes dynamically instead of
1987 using the maximum available value.
1990 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1991 in addition to the text details.
1994 *) Very, very preliminary EXPERIMENTAL support for printing of general
1995 ASN1 structures. This currently produces rather ugly output and doesn't
1996 handle several customised structures at all.
1999 *) Integrated support for PVK file format and some related formats such
2000 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
2001 these in the 'rsa' and 'dsa' utilities.
2004 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
2007 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
2008 place for the (very old) "NETSCAPE" format certificates which are now
2009 handled using new ASN1 code equivalents.
2012 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
2013 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
2014 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2017 *) Modify CRL distribution points extension code to print out previously
2018 unsupported fields. Enhance extension setting code to allow setting of
2022 *) Add print and set support for Issuing Distribution Point CRL extension.
2025 *) Change 'Configure' script to enable Camellia by default.
2028 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2030 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2032 This addresses the flaw in CBC record processing discovered by
2033 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2034 at: http://www.isg.rhul.ac.uk/tls/
2036 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2037 Security Group at Royal Holloway, University of London
2038 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2039 Emilia Käsper for the initial patch.
2041 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2043 *) Return an error when checking OCSP signatures when key is NULL.
2044 This fixes a DoS attack. (CVE-2013-0166)
2047 *) Return an error when checking OCSP signatures when key is NULL.
2048 This fixes a DoS attack. (CVE-2013-0166)
2051 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2052 the right response is stapled. Also change SSL_get_certificate()
2053 so it returns the certificate actually sent.
2054 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2055 (This is a backport)
2056 [Rob Stradling <rob.stradling@comodo.com>]
2058 *) Fix possible deadlock when decoding public keys.
2061 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2063 *) Sanity check record length before skipping explicit IV in DTLS
2066 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2067 fuzzing as a service testing platform.
2071 *) Initialise tkeylen properly when encrypting CMS messages.
2072 Thanks to Solar Designer of Openwall for reporting this issue.
2075 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2077 *) The fix for CVE-2012-2110 did not take into account that the
2078 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2079 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2080 rejecting negative len parameter. (CVE-2012-2131)
2081 [Tomas Hoger <thoger@redhat.com>]
2083 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2085 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2086 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2087 in CRYPTO_realloc_clean.
2089 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2090 issue and to Adam Langley <agl@chromium.org> for fixing it.
2092 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2094 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2096 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2097 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2098 content decryption and always return the same error. Note: this attack
2099 needs on average 2^20 messages so it only affects automated senders. The
2100 old behaviour can be reenabled in the CMS code by setting the
2101 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2102 an MMA defence is not necessary.
2103 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2104 this issue. (CVE-2012-0884)
2107 *) Fix CVE-2011-4619: make sure we really are receiving a
2108 client hello before rejecting multiple SGC restarts. Thanks to
2109 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2112 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2114 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2115 Thanks to Antonio Martin, Enterprise Secure Access Research and
2116 Development, Cisco Systems, Inc. for discovering this bug and
2117 preparing a fix. (CVE-2012-0050)
2120 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2122 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2123 of the Vaudenay padding oracle attack on CBC mode encryption
2124 which enables an efficient plaintext recovery attack against
2125 the OpenSSL implementation of DTLS. Their attack exploits timing
2126 differences arising during decryption processing. A research
2127 paper describing this attack can be found at:
2128 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2129 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2130 Security Group at Royal Holloway, University of London
2131 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2132 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2133 for preparing the fix. (CVE-2011-4108)
2134 [Robin Seggelmann, Michael Tuexen]
2136 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2137 [Ben Laurie, Kasper <ekasper@google.com>]
2139 *) Clear bytes used for block padding of SSL 3.0 records.
2141 [Adam Langley (Google)]
2143 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2144 Kadianakis <desnacked@gmail.com> for discovering this issue and
2145 Adam Langley for preparing the fix. (CVE-2011-4619)
2146 [Adam Langley (Google)]
2148 *) Prevent malformed RFC3779 data triggering an assertion failure.
2149 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2150 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2151 [Rob Austein <sra@hactrn.net>]
2153 *) Fix ssl_ciph.c set-up race.
2154 [Adam Langley (Google)]
2156 *) Fix spurious failures in ecdsatest.c.
2157 [Emilia Käsper (Google)]
2159 *) Fix the BIO_f_buffer() implementation (which was mixing different
2160 interpretations of the '..._len' fields).
2161 [Adam Langley (Google)]
2163 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2164 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2165 threads won't reuse the same blinding coefficients.
2167 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2168 lock to call BN_BLINDING_invert_ex, and avoids one use of
2169 BN_BLINDING_update for each BN_BLINDING structure (previously,
2170 the last update always remained unused).
2171 [Emilia Käsper (Google)]
2173 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2174 for multi-threaded use of ECDH.
2175 [Adam Langley (Google)]
2177 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2180 *) Add protection against ECDSA timing attacks as mentioned in the paper
2181 by Billy Bob Brumley and Nicola Tuveri, see:
2183 http://eprint.iacr.org/2011/232.pdf
2185 [Billy Bob Brumley and Nicola Tuveri]
2187 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2189 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2190 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2192 *) Fix bug in string printing code: if *any* escaping is enabled we must
2193 escape the escape character (backslash) or the resulting string is
2197 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2199 *) Disable code workaround for ancient and obsolete Netscape browsers
2200 and servers: an attacker can use it in a ciphersuite downgrade attack.
2201 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2204 *) Fixed J-PAKE implementation error, originally discovered by
2205 Sebastien Martini, further info and confirmation from Stefan
2206 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2209 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2211 *) Fix extension code to avoid race conditions which can result in a buffer
2212 overrun vulnerability: resumed sessions must not be modified as they can
2213 be shared by multiple threads. CVE-2010-3864
2216 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2219 *) Don't reencode certificate when calculating signature: cache and use
2220 the original encoding instead. This makes signature verification of
2221 some broken encodings work correctly.
2224 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2225 is also one of the inputs.
2226 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2228 *) Don't repeatedly append PBE algorithms to table if they already exist.
2229 Sort table on each new add. This effectively makes the table read only
2230 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2234 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2236 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2239 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2240 access or freeing data twice (CVE-2010-0742)
2241 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2243 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2244 common in certificates and some applications which only call
2245 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2249 Reduce copying into .apps and .test in makevms.com
2250 Don't try to use blank CA certificate in CA.com
2251 Allow use of C files from original directories in maketests.com
2252 [Steven M. Schweda" <sms@antinode.info>]
2254 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2256 *) When rejecting SSL/TLS records due to an incorrect version number, never
2257 update s->server with a new major version number. As of
2258 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2259 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2260 the previous behavior could result in a read attempt at NULL when
2261 receiving specific incorrect SSL/TLS records once record payload
2262 protection is active. (CVE-2010-0740)
2263 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2265 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2266 could be crashed if the relevant tables were not present (e.g. chrooted).
2267 [Tomas Hoger <thoger@redhat.com>]
2269 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2271 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2272 [Martin Olsson, Neel Mehta]
2274 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2275 accommodate for stack sorting, always a write lock!).
2278 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2279 excessive delays in the RAND_poll(): over a minute. As a workaround
2280 include a time check in the inner Heap32Next loop too.
2283 *) The code that handled flushing of data in SSL/TLS originally used the
2284 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2285 the problem outlined in PR#1949. The fix suggested there however can
2286 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2287 of Apache). So instead simplify the code to flush unconditionally.
2288 This should be fine since flushing with no data to flush is a no op.
2291 *) Handle TLS versions 2.0 and later properly and correctly use the
2292 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2293 off ancient servers have a habit of sticking around for a while...
2296 *) Modify compression code so it frees up structures without using the
2297 ex_data callbacks. This works around a problem where some applications
2298 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2299 restarting) then use compression (e.g. SSL with compression) later.
2300 This results in significant per-connection memory leaks and
2301 has caused some security issues including CVE-2008-1678 and
2305 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2306 change when encrypting or decrypting.
2309 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2310 connect and renegotiate with servers which do not support RI.
2311 Until RI is more widely deployed this option is enabled by default.
2314 *) Add "missing" ssl ctrls to clear options and mode.
2317 *) If client attempts to renegotiate and doesn't support RI respond with
2318 a no_renegotiation alert as required by RFC5746. Some renegotiating
2319 TLS clients will continue a connection gracefully when they receive
2320 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2321 waiting for a server hello which it will never receive. Now we treat a
2322 received no_renegotiation alert as a fatal error. This is because
2323 applications requesting a renegotiation might well expect it to succeed
2324 and would have no code in place to handle the server denying it so the
2325 only safe thing to do is to terminate the connection.
2328 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2329 peer supports secure renegotiation and 0 otherwise. Print out peer
2330 renegotiation support in s_client/s_server.
2333 *) Replace the highly broken and deprecated SPKAC certification method with
2334 the updated NID creation version. This should correctly handle UTF8.
2337 *) Implement RFC5746. Re-enable renegotiation but require the extension
2338 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2339 turns out to be a bad idea. It has been replaced by
2340 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2341 SSL_CTX_set_options(). This is really not recommended unless you
2342 know what you are doing.
2343 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2345 *) Fixes to stateless session resumption handling. Use initial_ctx when
2346 issuing and attempting to decrypt tickets in case it has changed during
2347 servername handling. Use a non-zero length session ID when attempting
2348 stateless session resumption: this makes it possible to determine if
2349 a resumption has occurred immediately after receiving server hello
2350 (several places in OpenSSL subtly assume this) instead of later in
2354 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2355 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2356 fixes for a few places where the return code is not checked
2358 [Julia Lawall <julia@diku.dk>]
2360 *) Add --strict-warnings option to Configure script to include devteam
2361 warnings in other configurations.
2364 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2365 makes it possible to install openssl libraries in locations which
2366 have names other than "lib", for example "/usr/lib64" which some
2368 [Steve Henson, based on patch from Jeremy Utley]
2370 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2371 X690 8.9.12 and can produce some misleading textual output of OIDs.
2372 [Steve Henson, reported by Dan Kaminsky]
2374 *) Delete MD2 from algorithm tables. This follows the recommendation in
2375 several standards that it is not used in new applications due to
2376 several cryptographic weaknesses. For binary compatibility reasons
2377 the MD2 API is still compiled in by default.
2380 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2384 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2385 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2387 [Guenter <lists@gknw.net>]
2389 *) Fix the server certificate chain building code to use X509_verify_cert(),
2390 it used to have an ad-hoc builder which was unable to cope with anything
2391 other than a simple chain.
2392 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2394 *) Don't check self signed certificate signatures in X509_verify_cert()
2395 by default (a flag can override this): it just wastes time without
2396 adding any security. As a useful side effect self signed root CAs
2397 with non-FIPS digests are now usable in FIPS mode.
2400 *) In dtls1_process_out_of_seq_message() the check if the current message
2401 is already buffered was missing. For every new message was memory
2402 allocated, allowing an attacker to perform an denial of service attack
2403 with sending out of seq handshake messages until there is no memory
2404 left. Additionally every future messege was buffered, even if the
2405 sequence number made no sense and would be part of another handshake.
2406 So only messages with sequence numbers less than 10 in advance will be
2407 buffered. (CVE-2009-1378)
2408 [Robin Seggelmann, discovered by Daniel Mentz]
2410 *) Records are buffered if they arrive with a future epoch to be
2411 processed after finishing the corresponding handshake. There is
2412 currently no limitation to this buffer allowing an attacker to perform
2413 a DOS attack with sending records with future epochs until there is no
2414 memory left. This patch adds the pqueue_size() function to detemine
2415 the size of a buffer and limits the record buffer to 100 entries.
2417 [Robin Seggelmann, discovered by Daniel Mentz]
2419 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2420 parent structure is freed. (CVE-2009-1379)
2423 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2424 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2427 [Ilya O. <vrghost@gmail.com>]
2429 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2431 *) Disable renegotiation completely - this fixes a severe security
2432 problem (CVE-2009-3555) at the cost of breaking all
2433 renegotiation. Renegotiation can be re-enabled by setting
2434 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2435 run-time. This is really not recommended unless you know what
2439 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2441 *) Don't set val to NULL when freeing up structures, it is freed up by
2442 underlying code. If sizeof(void *) > sizeof(long) this can result in
2443 zeroing past the valid field. (CVE-2009-0789)
2444 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2446 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2447 checked correctly. This would allow some invalid signed attributes to
2448 appear to verify correctly. (CVE-2009-0591)
2449 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2451 *) Reject UniversalString and BMPString types with invalid lengths. This
2452 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2453 a legal length. (CVE-2009-0590)
2456 *) Set S/MIME signing as the default purpose rather than setting it
2457 unconditionally. This allows applications to override it at the store
2461 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2462 to handle some structures.
2465 *) Improve efficiency of mem_gets: don't search whole buffer each time
2467 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2469 *) New -hex option for openssl rand.
2472 *) Print out UTF8String and NumericString when parsing ASN1.
2475 *) Support NumericString type for name components.
2478 *) Allow CC in the environment to override the automatically chosen
2479 compiler. Note that nothing is done to ensure flags work with the
2483 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2485 *) Properly check EVP_VerifyFinal() and similar return values
2487 [Ben Laurie, Bodo Moeller, Google Security Team]
2489 *) Enable TLS extensions by default.
2492 *) Allow the CHIL engine to be loaded, whether the application is
2493 multithreaded or not. (This does not release the developer from the
2494 obligation to set up the dynamic locking callbacks.)
2495 [Sander Temme <sander@temme.net>]
2497 *) Use correct exit code if there is an error in dgst command.
2498 [Steve Henson; problem pointed out by Roland Dirlewanger]
2500 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2501 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2504 *) Add experimental JPAKE support, including demo authentication in
2505 s_client and s_server.
2508 *) Set the comparison function in v3_addr_canonize().
2509 [Rob Austein <sra@hactrn.net>]
2511 *) Add support for XMPP STARTTLS in s_client.
2512 [Philip Paeps <philip@freebsd.org>]
2514 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2515 to ensure that even with this option, only ciphersuites in the
2516 server's preference list will be accepted. (Note that the option
2517 applies only when resuming a session, so the earlier behavior was
2518 just about the algorithm choice for symmetric cryptography.)
2521 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2523 *) Fix NULL pointer dereference if a DTLS server received
2524 ChangeCipherSpec as first record (CVE-2009-1386).
2527 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2528 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2531 *) The fix in 0.9.8c that supposedly got rid of unsafe
2532 double-checked locking was incomplete for RSA blinding,
2533 addressing just one layer of what turns out to have been
2534 doubly unsafe triple-checked locking.
2536 So now fix this for real by retiring the MONT_HELPER macro
2537 in crypto/rsa/rsa_eay.c.
2539 [Bodo Moeller; problem pointed out by Marius Schilder]
2541 *) Various precautionary measures:
2543 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2545 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2546 (NB: This would require knowledge of the secret session ticket key
2547 to exploit, in which case you'd be SOL either way.)
2549 - Change bn_nist.c so that it will properly handle input BIGNUMs
2550 outside the expected range.
2552 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2555 [Neel Mehta, Bodo Moeller]
2557 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2558 the load fails. Useful for distros.
2559 [Ben Laurie and the FreeBSD team]
2561 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2564 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2567 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2569 This work was sponsored by Logica.
2572 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2573 keystores. Support for SSL/TLS client authentication too.
2574 Not compiled unless enable-capieng specified to Configure.
2576 This work was sponsored by Logica.
2579 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2580 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2581 attribute creation routines such as certifcate requests and PKCS#12
2585 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2587 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2588 handshake which could lead to a cilent crash as found using the
2589 Codenomicon TLS test suite (CVE-2008-1672)
2590 [Steve Henson, Mark Cox]
2592 *) Fix double free in TLS server name extensions which could lead to
2593 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2596 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2598 Clear the error queue to ensure that error entries left from
2599 older function calls do not interfere with the correct operation.
2600 [Lutz Jaenicke, Erik de Castro Lopo]
2602 *) Remove root CA certificates of commercial CAs:
2604 The OpenSSL project does not recommend any specific CA and does not
2605 have any policy with respect to including or excluding any CA.
2606 Therefore it does not make any sense to ship an arbitrary selection
2607 of root CA certificates with the OpenSSL software.
2610 *) RSA OAEP patches to fix two separate invalid memory reads.
2611 The first one involves inputs when 'lzero' is greater than
2612 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2613 before the beginning of from). The second one involves inputs where
2614 the 'db' section contains nothing but zeroes (there is a one-byte
2615 invalid read after the end of 'db').
2616 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2618 *) Partial backport from 0.9.9-dev:
2620 Introduce bn_mul_mont (dedicated Montgomery multiplication
2621 procedure) as a candidate for BIGNUM assembler implementation.
2622 While 0.9.9-dev uses assembler for various architectures, only
2623 x86_64 is available by default here in the 0.9.8 branch, and
2624 32-bit x86 is available through a compile-time setting.
2626 To try the 32-bit x86 assembler implementation, use Configure
2627 option "enable-montasm" (which exists only for this backport).
2629 As "enable-montasm" for 32-bit x86 disclaims code stability
2630 anyway, in this constellation we activate additional code
2631 backported from 0.9.9-dev for further performance improvements,
2632 namely BN_from_montgomery_word. (To enable this otherwise,
2633 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2635 [Andy Polyakov (backport partially by Bodo Moeller)]
2637 *) Add TLS session ticket callback. This allows an application to set
2638 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2639 values. This is useful for key rollover for example where several key
2640 sets may exist with different names.
2643 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2644 This was broken until now in 0.9.8 releases, such that the only way
2645 a registered ENGINE could be used (assuming it initialises
2646 successfully on the host) was to explicitly set it as the default
2647 for the relevant algorithms. This is in contradiction with 0.9.7
2648 behaviour and the documentation. With this fix, when an ENGINE is
2649 registered into a given algorithm's table of implementations, the
2650 'uptodate' flag is reset so that auto-discovery will be used next
2651 time a new context for that algorithm attempts to select an
2653 [Ian Lister (tweaked by Geoff Thorpe)]
2655 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2656 implemention in the following ways:
2658 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2661 Lack of BER streaming support means one pass streaming processing is
2662 only supported if data is detached: setting the streaming flag is
2663 ignored for embedded content.
2665 CMS support is disabled by default and must be explicitly enabled
2666 with the enable-cms configuration option.
2669 *) Update the GMP engine glue to do direct copies between BIGNUM and
2670 mpz_t when openssl and GMP use the same limb size. Otherwise the
2671 existing "conversion via a text string export" trick is still used.
2672 [Paul Sheer <paulsheer@gmail.com>]
2674 *) Zlib compression BIO. This is a filter BIO which compressed and
2675 uncompresses any data passed through it.
2678 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2679 RFC3394 compatible AES key wrapping.
2682 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2683 sets string data without copying. X509_ALGOR_set0() and
2684 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2685 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2686 from an X509_ATTRIBUTE structure optionally checking it occurs only
2687 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2691 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2692 to get the expected BN_FLG_CONSTTIME behavior.
2693 [Bodo Moeller (Google)]
2697 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2698 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2699 - added some more tests to do_tests.pl
2700 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2701 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2702 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2703 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2704 - various changes to netware.pl to enable gcc-cross builds on Win32
2706 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2707 - various changes to fix missing prototype warnings
2708 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2709 - added AES, WHIRLPOOL and CPUID assembler code to build files
2710 - added missing AES assembler make rules to mk1mf.pl
2711 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2712 [Guenter Knauf <eflash@gmx.net>]
2714 *) Implement certificate status request TLS extension defined in RFC3546.
2715 A client can set the appropriate parameters and receive the encoded
2716 OCSP response via a callback. A server can query the supplied parameters
2717 and set the encoded OCSP response in the callback. Add simplified examples
2718 to s_client and s_server.
2721 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2723 *) Fix various bugs:
2724 + Binary incompatibility of ssl_ctx_st structure
2725 + DTLS interoperation with non-compliant servers
2726 + Don't call get_session_cb() without proposed session
2727 + Fix ia64 assembler code
2728 [Andy Polyakov, Steve Henson]
2730 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2732 *) DTLS Handshake overhaul. There were longstanding issues with
2733 OpenSSL DTLS implementation, which were making it impossible for
2734 RFC 4347 compliant client to communicate with OpenSSL server.
2735 Unfortunately just fixing these incompatibilities would "cut off"
2736 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2737 server keeps tolerating non RFC compliant syntax. The opposite is
2738 not true, 0.9.8f client can not communicate with earlier server.
2739 This update even addresses CVE-2007-4995.
2742 *) Changes to avoid need for function casts in OpenSSL: some compilers
2743 (gcc 4.2 and later) reject their use.
2744 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2747 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2748 RFC4507bis. The encrypted ticket format is an encrypted encoded
2749 SSL_SESSION structure, that way new session features are automatically
2752 If a client application caches session in an SSL_SESSION structure
2753 support is transparent because tickets are now stored in the encoded
2756 The SSL_CTX structure automatically generates keys for ticket
2757 protection in servers so again support should be possible
2758 with no application modification.
2760 If a client or server wishes to disable RFC4507 support then the option
2761 SSL_OP_NO_TICKET can be set.
2763 Add a TLS extension debugging callback to allow the contents of any client
2764 or server extensions to be examined.
2766 This work was sponsored by Google.
2769 *) Add initial support for TLS extensions, specifically for the server_name
2770 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2771 have new members for a host name. The SSL data structure has an
2772 additional member SSL_CTX *initial_ctx so that new sessions can be
2773 stored in that context to allow for session resumption, even after the
2774 SSL has been switched to a new SSL_CTX in reaction to a client's
2775 server_name extension.
2777 New functions (subject to change):
2779 SSL_get_servername()
2780 SSL_get_servername_type()
2783 New CTRL codes and macros (subject to change):
2785 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2786 - SSL_CTX_set_tlsext_servername_callback()
2787 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2788 - SSL_CTX_set_tlsext_servername_arg()
2789 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2791 openssl s_client has a new '-servername ...' option.
2793 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2794 '-key2 ...', '-servername_fatal' (subject to change). This allows
2795 testing the HostName extension for a specific single host name ('-cert'
2796 and '-key' remain fallbacks for handshakes without HostName
2797 negotiation). If the unrecogninzed_name alert has to be sent, this by
2798 default is a warning; it becomes fatal with the '-servername_fatal'
2801 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2803 *) Add AES and SSE2 assembly language support to VC++ build.
2806 *) Mitigate attack on final subtraction in Montgomery reduction.
2809 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2810 (which previously caused an internal error).
2813 *) Squeeze another 10% out of IGE mode when in != out.
2816 *) AES IGE mode speedup.
2817 [Dean Gaudet (Google)]
2819 *) Add the Korean symmetric 128-bit cipher SEED (see
2820 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2821 add SEED ciphersuites from RFC 4162:
2823 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2824 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2825 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2826 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2828 To minimize changes between patchlevels in the OpenSSL 0.9.8
2829 series, SEED remains excluded from compilation unless OpenSSL
2830 is configured with 'enable-seed'.
2831 [KISA, Bodo Moeller]
2833 *) Mitigate branch prediction attacks, which can be practical if a
2834 single processor is shared, allowing a spy process to extract
2835 information. For detailed background information, see
2836 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2837 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2838 and Necessary Software Countermeasures"). The core of the change
2839 are new versions BN_div_no_branch() and
2840 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2841 respectively, which are slower, but avoid the security-relevant
2842 conditional branches. These are automatically called by BN_div()
2843 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2844 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2845 remove a conditional branch.
2847 BN_FLG_CONSTTIME is the new name for the previous
2848 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2849 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2850 in the exponent causes BN_mod_exp_mont() to use the alternative
2851 implementation in BN_mod_exp_mont_consttime().) The old name
2852 remains as a deprecated alias.
2854 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2855 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2856 constant-time implementations for more than just exponentiation.
2857 Here too the old name is kept as a deprecated alias.
2859 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2860 the BN_BLINDING structure gets an independent copy of the
2861 modulus. This means that the previous "BIGNUM *m" argument to
2862 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2863 essentially becomes "const BIGNUM *m", although we can't actually
2864 change this in the header file before 0.9.9. It allows
2865 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2866 enable BN_FLG_CONSTTIME.
2868 [Matthew D Wood (Intel Corp)]
2870 *) In the SSL/TLS server implementation, be strict about session ID
2871 context matching (which matters if an application uses a single
2872 external cache for different purposes). Previously,
2873 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2874 set. This did ensure strict client verification, but meant that,
2875 with applications using a single external cache for quite
2876 different requirements, clients could circumvent ciphersuite
2877 restrictions for a given session ID context by starting a session
2878 in a different context.
2881 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2882 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2883 authentication-only ciphersuites.
2886 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2887 not complete and could lead to a possible single byte overflow
2888 (CVE-2007-5135) [Ben Laurie]
2890 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2892 *) Since AES128 and AES256 (and similarly Camellia128 and
2893 Camellia256) share a single mask bit in the logic of
2894 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2895 kludge to work properly if AES128 is available and AES256 isn't
2896 (or if Camellia128 is available and Camellia256 isn't).
2899 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2900 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2901 When a point or a seed is encoded in a BIT STRING, we need to
2902 prevent the removal of trailing zero bits to get the proper DER
2903 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2904 of a NamedBitList, for which trailing 0 bits need to be removed.)
2907 *) Have SSL/TLS server implementation tolerate "mismatched" record
2908 protocol version while receiving ClientHello even if the
2909 ClientHello is fragmented. (The server can't insist on the
2910 particular protocol version it has chosen before the ServerHello
2911 message has informed the client about his choice.)
2914 *) Add RFC 3779 support.
2915 [Rob Austein for ARIN, Ben Laurie]
2917 *) Load error codes if they are not already present instead of using a
2918 static variable. This allows them to be cleanly unloaded and reloaded.
2919 Improve header file function name parsing.
2922 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2923 or CAPABILITY handshake as required by RFCs.
2926 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2928 *) Introduce limits to prevent malicious keys being able to
2929 cause a denial of service. (CVE-2006-2940)
2930 [Steve Henson, Bodo Moeller]
2932 *) Fix ASN.1 parsing of certain invalid structures that can result
2933 in a denial of service. (CVE-2006-2937) [Steve Henson]
2935 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2936 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2938 *) Fix SSL client code which could crash if connecting to a
2939 malicious SSLv2 server. (CVE-2006-4343)
2940 [Tavis Ormandy and Will Drewry, Google Security Team]
2942 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2943 match only those. Before that, "AES256-SHA" would be interpreted
2944 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2945 the same strength classification in 0.9.7h) as we currently only
2946 have a single AES bit in the ciphersuite description bitmap.
2947 That change, however, also applied to ciphersuite strings such as
2948 "RC4-MD5" that intentionally matched multiple ciphersuites --
2949 namely, SSL 2.0 ciphersuites in addition to the more common ones
2950 from SSL 3.0/TLS 1.0.
2952 So we change the selection algorithm again: Naming an explicit
2953 ciphersuite selects this one ciphersuite, and any other similar
2954 ciphersuite (same bitmap) from *other* protocol versions.
2955 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2956 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2958 Since SSL 2.0 does not have any ciphersuites for which the
2959 128/256 bit distinction would be relevant, this works for now.
2960 The proper fix will be to use different bits for AES128 and
2961 AES256, which would have avoided the problems from the beginning;
2962 however, bits are scarce, so we can only do this in a new release
2963 (not just a patchlevel) when we can change the SSL_CIPHER
2964 definition to split the single 'unsigned long mask' bitmap into
2965 multiple values to extend the available space.
2969 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2971 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2972 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2974 *) Add AES IGE and biIGE modes.
2977 *) Change the Unix randomness entropy gathering to use poll() when
2978 possible instead of select(), since the latter has some
2979 undesirable limitations.
2980 [Darryl Miles via Richard Levitte and Bodo Moeller]
2982 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2983 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2984 cannot be implicitly activated as part of, e.g., the "AES" alias.
2985 However, please upgrade to OpenSSL 0.9.9[-dev] for
2986 non-experimental use of the ECC ciphersuites to get TLS extension
2987 support, which is required for curve and point format negotiation
2988 to avoid potential handshake problems.
2991 *) Disable rogue ciphersuites:
2993 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2994 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2995 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2997 The latter two were purportedly from
2998 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3001 Also deactivate the remaining ciphersuites from
3002 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3003 unofficial, and the ID has long expired.
3006 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3007 dual-core machines) and other potential thread-safety issues.
3010 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
3011 versions), which is now available for royalty-free use
3012 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
3013 Also, add Camellia TLS ciphersuites from RFC 4132.
3015 To minimize changes between patchlevels in the OpenSSL 0.9.8
3016 series, Camellia remains excluded from compilation unless OpenSSL
3017 is configured with 'enable-camellia'.
3020 *) Disable the padding bug check when compression is in use. The padding
3021 bug check assumes the first packet is of even length, this is not
3022 necessarily true if compresssion is enabled and can result in false
3023 positives causing handshake failure. The actual bug test is ancient
3024 code so it is hoped that implementations will either have fixed it by
3025 now or any which still have the bug do not support compression.
3028 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3030 *) When applying a cipher rule check to see if string match is an explicit
3031 cipher suite and only match that one cipher suite if it is.
3034 *) Link in manifests for VC++ if needed.
3035 [Austin Ziegler <halostatue@gmail.com>]
3037 *) Update support for ECC-based TLS ciphersuites according to
3038 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3039 TLS extensions, which are supported starting with the 0.9.9
3040 branch, not in the OpenSSL 0.9.8 branch).
3043 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3044 opaque EVP_CIPHER_CTX handling.
3047 *) Fixes and enhancements to zlib compression code. We now only use
3048 "zlib1.dll" and use the default __cdecl calling convention on Win32
3049 to conform with the standards mentioned here:
3050 http://www.zlib.net/DLL_FAQ.txt
3051 Static zlib linking now works on Windows and the new --with-zlib-include
3052 --with-zlib-lib options to Configure can be used to supply the location
3053 of the headers and library. Gracefully handle case where zlib library
3057 *) Several fixes and enhancements to the OID generation code. The old code
3058 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3059 handle numbers larger than ULONG_MAX, truncated printing and had a
3060 non standard OBJ_obj2txt() behaviour.
3063 *) Add support for building of engines under engine/ as shared libraries
3064 under VC++ build system.
3067 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3068 Hopefully, we will not see any false combination of paths any more.
3071 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3073 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3074 (part of SSL_OP_ALL). This option used to disable the
3075 countermeasure against man-in-the-middle protocol-version
3076 rollback in the SSL 2.0 server implementation, which is a bad
3077 idea. (CVE-2005-2969)
3079 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3080 for Information Security, National Institute of Advanced Industrial
3081 Science and Technology [AIST], Japan)]
3083 *) Add two function to clear and return the verify parameter flags.
3086 *) Keep cipherlists sorted in the source instead of sorting them at
3087 runtime, thus removing the need for a lock.
3090 *) Avoid some small subgroup attacks in Diffie-Hellman.
3091 [Nick Mathewson and Ben Laurie]
3093 *) Add functions for well-known primes.
3096 *) Extended Windows CE support.
3097 [Satoshi Nakamura and Andy Polyakov]
3099 *) Initialize SSL_METHOD structures at compile time instead of during
3100 runtime, thus removing the need for a lock.
3103 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3104 attempting to decrypt each encrypted key in turn. Add support to
3108 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3110 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3113 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3116 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3117 key into the same file any more.
3120 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3123 *) Add -utf8 command line and config file option to 'ca'.
3124 [Stefan <stf@udoma.org]
3126 *) Removed the macro des_crypt(), as it seems to conflict with some
3127 libraries. Use DES_crypt().
3130 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3131 involves renaming the source and generated shared-libs for
3132 both. The engines will accept the corrected or legacy ids
3133 ('ncipher' and '4758_cca' respectively) when binding. NB,
3134 this only applies when building 'shared'.
3135 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3137 *) Add attribute functions to EVP_PKEY structure. Modify
3138 PKCS12_create() to recognize a CSP name attribute and
3139 use it. Make -CSP option work again in pkcs12 utility.
3142 *) Add new functionality to the bn blinding code:
3143 - automatic re-creation of the BN_BLINDING parameters after
3144 a fixed number of uses (currently 32)
3145 - add new function for parameter creation
3146 - introduce flags to control the update behaviour of the
3147 BN_BLINDING parameters
3148 - hide BN_BLINDING structure
3149 Add a second BN_BLINDING slot to the RSA structure to improve
3150 performance when a single RSA object is shared among several
3154 *) Add support for DTLS.
3155 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3157 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3158 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3161 *) Remove buggy and incompletet DH cert support from
3162 ssl/ssl_rsa.c and ssl/s3_both.c
3165 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3166 the apps/openssl applications.
3169 *) Compile clean with "-Wall -Wmissing-prototypes
3170 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3171 DEBUG_SAFESTACK must also be set.
3174 *) Change ./Configure so that certain algorithms can be disabled by default.
3175 The new counterpiece to "no-xxx" is "enable-xxx".
3177 The patented RC5 and MDC2 algorithms will now be disabled unless
3178 "enable-rc5" and "enable-mdc2", respectively, are specified.
3180 (IDEA remains enabled despite being patented. This is because IDEA
3181 is frequently required for interoperability, and there is no license
3182 fee for non-commercial use. As before, "no-idea" can be used to
3183 avoid this algorithm.)
3187 *) Add processing of proxy certificates (see RFC 3820). This work was
3188 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3189 EGEE (Enabling Grids for E-science in Europe).
3192 *) RC4 performance overhaul on modern architectures/implementations, such
3193 as Intel P4, IA-64 and AMD64.
3196 *) New utility extract-section.pl. This can be used specify an alternative
3197 section number in a pod file instead of having to treat each file as
3198 a separate case in Makefile. This can be done by adding two lines to the
3201 =for comment openssl_section:XXX
3203 The blank line is mandatory.
3207 *) New arguments -certform, -keyform and -pass for s_client and s_server
3208 to allow alternative format key and certificate files and passphrase
3212 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3213 update associated structures and add various utility functions.
3215 Add new policy related verify parameters, include policy checking in
3216 standard verify code. Enhance 'smime' application with extra parameters
3217 to support policy checking and print out.
3220 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3221 Nehemiah processors. These extensions support AES encryption in hardware
3222 as well as RNG (though RNG support is currently disabled).
3223 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3225 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3228 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3229 [Andy Polyakov and a number of other people]
3231 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3232 implementation contributed by IBM.
3233 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3235 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3236 exponent rather than 'unsigned long'. There is a corresponding change to
3237 the new 'rsa_keygen' element of the RSA_METHOD structure.
3238 [Jelte Jansen, Geoff Thorpe]
3240 *) Functionality for creating the initial serial number file is now
3241 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3243 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3244 number file to 1, which is bound to cause problems. To avoid
3245 the problems while respecting compatibility between different 0.9.7
3246 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3247 CA.pl for serial number initialization. With the new release 0.9.8,
3248 we can fix the problem directly in the 'ca' utility.)
3251 *) Reduced header interdepencies by declaring more opaque objects in
3252 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3253 give fewer recursive includes, which could break lazy source code - so
3254 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3255 developers should define this symbol when building and using openssl to
3256 ensure they track the recommended behaviour, interfaces, [etc], but
3257 backwards-compatible behaviour prevails when this isn't defined.
3260 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3263 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3264 This will generate a random key of the appropriate length based on the
3265 cipher context. The EVP_CIPHER can provide its own random key generation
3266 routine to support keys of a specific form. This is used in the des and
3267 3des routines to generate a key of the correct parity. Update S/MIME
3268 code to use new functions and hence generate correct parity DES keys.
3269 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3270 valid (weak or incorrect parity).
3273 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3274 as looking them up. This is useful when the verified structure may contain
3275 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3276 present unless the new PKCS7_NO_CRL flag is asserted.
3279 *) Extend ASN1 oid configuration module. It now additionally accepts the
3282 shortName = some long name, 1.2.3.4
3285 *) Reimplemented the BN_CTX implementation. There is now no more static
3286 limitation on the number of variables it can handle nor the depth of the
3287 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3288 information can now expand as required, and rather than having a single
3289 static array of bignums, BN_CTX now uses a linked-list of such arrays
3290 allowing it to expand on demand whilst maintaining the usefulness of
3291 BN_CTX's "bundling".
3294 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3295 to allow all RSA operations to function using a single BN_CTX.
3298 *) Preliminary support for certificate policy evaluation and checking. This
3299 is initially intended to pass the tests outlined in "Conformance Testing
3300 of Relying Party Client Certificate Path Processing Logic" v1.07.
3303 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3304 remained unused and not that useful. A variety of other little bignum
3305 tweaks and fixes have also been made continuing on from the audit (see
3309 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3310 associated ASN1, EVP and SSL functions and old ASN1 macros.
3313 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3314 and this should never fail. So the return value from the use of
3315 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3316 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3319 *) BN_CTX_get() should return zero-valued bignums, providing the same
3320 initialised value as BN_new().
3321 [Geoff Thorpe, suggested by Ulf Möller]
3323 *) Support for inhibitAnyPolicy certificate extension.
3326 *) An audit of the BIGNUM code is underway, for which debugging code is
3327 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3328 is considered valid when processing BIGNUMs, and causes execution to
3329 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3330 further steps are taken to deliberately pollute unused data in BIGNUM
3331 structures to try and expose faulty code further on. For now, openssl will
3332 (in its default mode of operation) continue to tolerate the inconsistent
3333 forms that it has tolerated in the past, but authors and packagers should
3334 consider trying openssl and their own applications when compiled with
3335 these debugging symbols defined. It will help highlight potential bugs in
3336 their own code, and will improve the test coverage for OpenSSL itself. At
3337 some point, these tighter rules will become openssl's default to improve
3338 maintainability, though the assert()s and other overheads will remain only
3339 in debugging configurations. See bn.h for more details.
3340 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3342 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3343 that can only be obtained through BN_CTX_new() (which implicitly
3344 initialises it). The presence of this function only made it possible
3345 to overwrite an existing structure (and cause memory leaks).
3348 *) Because of the callback-based approach for implementing LHASH as a
3349 template type, lh_insert() adds opaque objects to hash-tables and
3350 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3351 to clean up those corresponding objects before destroying the hash table
3352 (and losing the object pointers). So some over-zealous constifications in
3353 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3354 objects as "const" and the lh_doall[_arg] callback wrappers are not
3355 prototyped to have "const" restrictions on the object pointers they are
3356 given (and so aren't required to cast them away any more).
3359 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3360 (speed) prefers to use its own implementation. The two implementations
3361 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3362 its object type properly exposed (MS_TM) instead of casting to/from "char
3363 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3364 aren't necessarily the greatest nomenclatures - but this is what was used
3365 internally to the implementation so I've used that for now.
3368 *) Ensure that deprecated functions do not get compiled when
3369 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3370 the self-tests were still using deprecated key-generation functions so
3371 these have been updated also.
3374 *) Reorganise PKCS#7 code to separate the digest location functionality
3375 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3376 New function PKCS7_set_digest() to set the digest type for PKCS#7
3377 digestedData type. Add additional code to correctly generate the
3378 digestedData type and add support for this type in PKCS7 initialization
3382 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3383 structure of type "other".
3386 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3387 sure the loop does correctly stop and breaking ("division by zero")
3388 modulus operations are not performed. The (pre-generated) prime
3389 table crypto/bn/bn_prime.h was already correct, but it could not be
3390 re-generated on some platforms because of the "division by zero"
3391 situation in the script.
3392 [Ralf S. Engelschall]
3394 *) Update support for ECC-based TLS ciphersuites according to
3395 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3396 SHA-1 now is only used for "small" curves (where the
3397 representation of a field element takes up to 24 bytes); for
3398 larger curves, the field element resulting from ECDH is directly
3399 used as premaster secret.
3400 [Douglas Stebila (Sun Microsystems Laboratories)]
3402 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3403 curve secp160r1 to the tests.
3404 [Douglas Stebila (Sun Microsystems Laboratories)]
3406 *) Add the possibility to load symbols globally with DSO.
3407 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3409 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3410 control of the error stack.
3413 *) Add support for STORE in ENGINE.
3416 *) Add the STORE type. The intention is to provide a common interface
3417 to certificate and key stores, be they simple file-based stores, or
3418 HSM-type store, or LDAP stores, or...
3419 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3422 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3423 pass a list of arguments to any function as well as provide a way
3424 for a function to pass data back to the caller.
3427 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3428 works like BUF_strdup() but can be used to duplicate a portion of
3429 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3433 *) Add the function sk_find_ex() which works like sk_find(), but will
3434 return an index to an element even if an exact match couldn't be
3435 found. The index is guaranteed to point at the element where the
3436 searched-for key would be inserted to preserve sorting order.
3439 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3440 takes an extra flags argument for optional functionality. Currently,
3441 the following flags are defined:
3443 OBJ_BSEARCH_VALUE_ON_NOMATCH
3444 This one gets OBJ_bsearch_ex() to return a pointer to the first
3445 element where the comparing function returns a negative or zero
3448 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3449 This one gets OBJ_bsearch_ex() to return a pointer to the first
3450 element where the comparing function returns zero. This is useful
3451 if there are more than one element where the comparing function
3455 *) Make it possible to create self-signed certificates with 'openssl ca'
3456 in such a way that the self-signed certificate becomes part of the
3457 CA database and uses the same mechanisms for serial number generation
3458 as all other certificate signing. The new flag '-selfsign' enables
3459 this functionality. Adapt CA.sh and CA.pl.in.
3462 *) Add functionality to check the public key of a certificate request
3463 against a given private. This is useful to check that a certificate
3464 request can be signed by that key (self-signing).
3467 *) Make it possible to have multiple active certificates with the same
3468 subject in the CA index file. This is done only if the keyword
3469 'unique_subject' is set to 'no' in the main CA section (default
3470 if 'CA_default') of the configuration file. The value is saved
3471 with the database itself in a separate index attribute file,
3472 named like the index file with '.attr' appended to the name.
3475 *) Generate muti valued AVAs using '+' notation in config files for
3479 *) Support for nameConstraints certificate extension.
3482 *) Support for policyConstraints certificate extension.
3485 *) Support for policyMappings certificate extension.
3488 *) Make sure the default DSA_METHOD implementation only uses its
3489 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3490 and change its own handlers to be NULL so as to remove unnecessary
3491 indirection. This lets alternative implementations fallback to the
3492 default implementation more easily.
3495 *) Support for directoryName in GeneralName related extensions
3499 *) Make it possible to link applications using Makefile.shared.
3500 Make that possible even when linking against static libraries!
3503 *) Support for single pass processing for S/MIME signing. This now
3504 means that S/MIME signing can be done from a pipe, in addition
3505 cleartext signing (multipart/signed type) is effectively streaming
3506 and the signed data does not need to be all held in memory.
3508 This is done with a new flag PKCS7_STREAM. When this flag is set
3509 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3510 is done after the data is output (and digests calculated) in
3511 SMIME_write_PKCS7().
3514 *) Add full support for -rpath/-R, both in shared libraries and
3515 applications, at least on the platforms where it's known how
3519 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3520 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3521 will now compute a table of multiples of the generator that
3522 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3523 faster (notably in the case of a single point multiplication,
3524 scalar * generator).
3525 [Nils Larsch, Bodo Moeller]
3527 *) IPv6 support for certificate extensions. The various extensions
3528 which use the IP:a.b.c.d can now take IPv6 addresses using the
3529 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3533 *) Added an ENGINE that implements RSA by performing private key
3534 exponentiations with the GMP library. The conversions to and from
3535 GMP's mpz_t format aren't optimised nor are any montgomery forms
3536 cached, and on x86 it appears OpenSSL's own performance has caught up.
3537 However there are likely to be other architectures where GMP could
3538 provide a boost. This ENGINE is not built in by default, but it can be
3539 specified at Configure time and should be accompanied by the necessary
3540 linker additions, eg;
3541 ./config -DOPENSSL_USE_GMP -lgmp
3544 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3545 testing availability of engines with "-t" - the old behaviour is
3546 produced by increasing the feature's verbosity with "-tt".
3549 *) ECDSA routines: under certain error conditions uninitialized BN objects
3550 could be freed. Solution: make sure initialization is performed early
3551 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3555 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3556 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3557 software implementations. For DSA and DH, parameter generation can
3558 also be overriden by providing the appropriate method callbacks.
3561 *) Change the "progress" mechanism used in key-generation and
3562 primality testing to functions that take a new BN_GENCB pointer in
3563 place of callback/argument pairs. The new API functions have "_ex"
3564 postfixes and the older functions are reimplemented as wrappers for
3565 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3566 declarations of the old functions to help (graceful) attempts to
3567 migrate to the new functions. Also, the new key-generation API
3568 functions operate on a caller-supplied key-structure and return
3569 success/failure rather than returning a key or NULL - this is to
3570 help make "keygen" another member function of RSA_METHOD etc.
3572 Example for using the new callback interface:
3574 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3578 BN_GENCB_set(&my_cb, my_callback, my_arg);
3580 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3581 /* For the meaning of a, b in calls to my_callback(), see the
3582 * documentation of the function that calls the callback.
3583 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3584 * my_callback should return 1 if it wants BN_is_prime_ex()
3585 * to continue, or 0 to stop.
3590 *) Change the ZLIB compression method to be stateful, and make it
3591 available to TLS with the number defined in
3592 draft-ietf-tls-compression-04.txt.
3595 *) Add the ASN.1 structures and functions for CertificatePair, which
3596 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3598 CertificatePair ::= SEQUENCE {
3599 forward [0] Certificate OPTIONAL,
3600 reverse [1] Certificate OPTIONAL,
3601 -- at least one of the pair shall be present -- }
3603 Also implement the PEM functions to read and write certificate
3604 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3606 This needed to be defined, mostly for the sake of the LDAP
3607 attribute crossCertificatePair, but may prove useful elsewhere as
3611 *) Make it possible to inhibit symlinking of shared libraries in
3612 Makefile.shared, for Cygwin's sake.
3615 *) Extend the BIGNUM API by creating a function
3616 void BN_set_negative(BIGNUM *a, int neg);
3617 and a macro that behave like
3618 int BN_is_negative(const BIGNUM *a);
3620 to avoid the need to access 'a->neg' directly in applications.
3623 *) Implement fast modular reduction for pseudo-Mersenne primes
3624 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3625 EC_GROUP_new_curve_GFp() will now automatically use this
3627 [Nils Larsch <nla@trustcenter.de>]
3629 *) Add new lock type (CRYPTO_LOCK_BN).
3632 *) Change the ENGINE framework to automatically load engines
3633 dynamically from specific directories unless they could be
3634 found to already be built in or loaded. Move all the
3635 current engines except for the cryptodev one to a new
3637 The engines in engines/ are built as shared libraries if
3638 the "shared" options was given to ./Configure or ./config.
3639 Otherwise, they are inserted in libcrypto.a.
3640 /usr/local/ssl/engines is the default directory for dynamic
3641 engines, but that can be overriden at configure time through
3642 the usual use of --prefix and/or --openssldir, and at run
3643 time with the environment variable OPENSSL_ENGINES.
3644 [Geoff Thorpe and Richard Levitte]
3646 *) Add Makefile.shared, a helper makefile to build shared
3647 libraries. Addapt Makefile.org.
3650 *) Add version info to Win32 DLLs.
3651 [Peter 'Luna' Runestig" <peter@runestig.com>]
3653 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3654 can be added using this API to created arbitrary PKCS#12
3655 files while avoiding the low level API.
3657 New options to PKCS12_create(), key or cert can be NULL and
3658 will then be omitted from the output file. The encryption
3659 algorithm NIDs can be set to -1 for no encryption, the mac
3660 iteration count can be set to 0 to omit the mac.
3662 Enhance pkcs12 utility by making the -nokeys and -nocerts
3663 options work when creating a PKCS#12 file. New option -nomac
3664 to omit the mac, NONE can be set for an encryption algorithm.
3665 New code is modified to use the enhanced PKCS12_create()
3666 instead of the low level API.
3669 *) Extend ASN1 encoder to support indefinite length constructed
3670 encoding. This can output sequences tags and octet strings in
3671 this form. Modify pk7_asn1.c to support indefinite length
3672 encoding. This is experimental and needs additional code to
3673 be useful, such as an ASN1 bio and some enhanced streaming
3676 Extend template encode functionality so that tagging is passed
3677 down to the template encoder.
3680 *) Let 'openssl req' fail if an argument to '-newkey' is not
3681 recognized instead of using RSA as a default.
3684 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3685 As these are not official, they are not included in "ALL";
3686 the "ECCdraft" ciphersuite group alias can be used to select them.
3687 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3689 *) Add ECDH engine support.
3690 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3692 *) Add ECDH in new directory crypto/ecdh/.
3693 [Douglas Stebila (Sun Microsystems Laboratories)]
3695 *) Let BN_rand_range() abort with an error after 100 iterations
3696 without success (which indicates a broken PRNG).
3699 *) Change BN_mod_sqrt() so that it verifies that the input value
3700 is really the square of the return value. (Previously,
3701 BN_mod_sqrt would show GIGO behaviour.)
3704 *) Add named elliptic curves over binary fields from X9.62, SECG,
3705 and WAP/WTLS; add OIDs that were still missing.
3707 [Sheueling Chang Shantz and Douglas Stebila
3708 (Sun Microsystems Laboratories)]
3710 *) Extend the EC library for elliptic curves over binary fields
3711 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3714 EC_GF2m_simple_method
3718 EC_GROUP_new_curve_GF2m
3719 EC_GROUP_set_curve_GF2m
3720 EC_GROUP_get_curve_GF2m
3721 EC_POINT_set_affine_coordinates_GF2m
3722 EC_POINT_get_affine_coordinates_GF2m
3723 EC_POINT_set_compressed_coordinates_GF2m
3725 Point compression for binary fields is disabled by default for
3726 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3729 As binary polynomials are represented as BIGNUMs, various members
3730 of the EC_GROUP and EC_POINT data structures can be shared
3731 between the implementations for prime fields and binary fields;
3732 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3733 are essentially identical to their ..._GFp counterparts.
3734 (For simplicity, the '..._GFp' prefix has been dropped from
3735 various internal method names.)
3737 An internal 'field_div' method (similar to 'field_mul' and
3738 'field_sqr') has been added; this is used only for binary fields.
3740 [Sheueling Chang Shantz and Douglas Stebila
3741 (Sun Microsystems Laboratories)]
3743 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3744 through methods ('mul', 'precompute_mult').
3746 The generic implementations (now internally called 'ec_wNAF_mul'
3747 and 'ec_wNAF_precomputed_mult') remain the default if these
3748 methods are undefined.
3750 [Sheueling Chang Shantz and Douglas Stebila
3751 (Sun Microsystems Laboratories)]
3753 *) New function EC_GROUP_get_degree, which is defined through
3754 EC_METHOD. For curves over prime fields, this returns the bit
3755 length of the modulus.
3757 [Sheueling Chang Shantz and Douglas Stebila
3758 (Sun Microsystems Laboratories)]
3760 *) New functions EC_GROUP_dup, EC_POINT_dup.
3761 (These simply call ..._new and ..._copy).
3763 [Sheueling Chang Shantz and Douglas Stebila
3764 (Sun Microsystems Laboratories)]
3766 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3767 Polynomials are represented as BIGNUMs (where the sign bit is not
3768 used) in the following functions [macros]:
3771 BN_GF2m_sub [= BN_GF2m_add]
3772 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3773 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3774 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3776 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3777 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3778 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3779 BN_GF2m_cmp [= BN_ucmp]
3781 (Note that only the 'mod' functions are actually for fields GF(2^m).
3782 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3784 For some functions, an the irreducible polynomial defining a
3785 field can be given as an 'unsigned int[]' with strictly
3786 decreasing elements giving the indices of those bits that are set;
3787 i.e., p[] represents the polynomial
3788 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3790 p[0] > p[1] > ... > p[k] = 0.
3791 This applies to the following functions:
3796 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3797 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3799 BN_GF2m_mod_sqrt_arr
3800 BN_GF2m_mod_solve_quad_arr
3804 Conversion can be performed by the following functions:
3809 bntest.c has additional tests for binary polynomial arithmetic.
3811 Two implementations for BN_GF2m_mod_div() are available.
3812 The default algorithm simply uses BN_GF2m_mod_inv() and
3813 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3814 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3815 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3817 [Sheueling Chang Shantz and Douglas Stebila
3818 (Sun Microsystems Laboratories)]
3820 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3821 functionality is disabled at compile-time.
3822 [Douglas Stebila <douglas.stebila@sun.com>]
3824 *) Change default behaviour of 'openssl asn1parse' so that more
3825 information is visible when viewing, e.g., a certificate:
3827 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3828 mode the content of non-printable OCTET STRINGs is output in a
3829 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3830 avoid the appearance of a printable string.
3831 [Nils Larsch <nla@trustcenter.de>]
3833 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3835 EC_GROUP_set_asn1_flag()
3836 EC_GROUP_get_asn1_flag()
3837 EC_GROUP_set_point_conversion_form()
3838 EC_GROUP_get_point_conversion_form()
3839 These control ASN1 encoding details:
3840 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3841 has been set to OPENSSL_EC_NAMED_CURVE.
3842 - Points are encoded in uncompressed form by default; options for
3843 asn1_for are as for point2oct, namely
3844 POINT_CONVERSION_COMPRESSED
3845 POINT_CONVERSION_UNCOMPRESSED
3846 POINT_CONVERSION_HYBRID
3848 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3851 EC_GROUP_get0_seed()
3852 EC_GROUP_get_seed_len()
3853 This is used only for ASN1 purposes (so far).
3854 [Nils Larsch <nla@trustcenter.de>]
3856 *) Add 'field_type' member to EC_METHOD, which holds the NID
3857 of the appropriate field type OID. The new function
3858 EC_METHOD_get_field_type() returns this value.
3859 [Nils Larsch <nla@trustcenter.de>]
3864 EC_POINT_point2hex()
3865 EC_POINT_hex2point()
3866 providing useful interfaces to EC_POINT_point2oct() and
3867 EC_POINT_oct2point().
3868 [Nils Larsch <nla@trustcenter.de>]
3870 *) Change internals of the EC library so that the functions
3871 EC_GROUP_set_generator()
3872 EC_GROUP_get_generator()
3873 EC_GROUP_get_order()
3874 EC_GROUP_get_cofactor()
3875 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3876 to methods, which would lead to unnecessary code duplication when
3877 adding different types of curves.
3878 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3880 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3881 arithmetic, and such that modified wNAFs are generated
3882 (which avoid length expansion in many cases).
3885 *) Add a function EC_GROUP_check_discriminant() (defined via
3886 EC_METHOD) that verifies that the curve discriminant is non-zero.
3888 Add a function EC_GROUP_check() that makes some sanity tests
3889 on a EC_GROUP, its generator and order. This includes
3890 EC_GROUP_check_discriminant().
3891 [Nils Larsch <nla@trustcenter.de>]
3893 *) Add ECDSA in new directory crypto/ecdsa/.
3895 Add applications 'openssl ecparam' and 'openssl ecdsa'
3896 (these are based on 'openssl dsaparam' and 'openssl dsa').
3898 ECDSA support is also included in various other files across the
3899 library. Most notably,
3900 - 'openssl req' now has a '-newkey ecdsa:file' option;
3901 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3902 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3903 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3904 them suitable for ECDSA where domain parameters must be
3905 extracted before the specific public key;
3906 - ECDSA engine support has been added.
3907 [Nils Larsch <nla@trustcenter.de>]
3909 *) Include some named elliptic curves, and add OIDs from X9.62,
3910 SECG, and WAP/WTLS. Each curve can be obtained from the new
3912 EC_GROUP_new_by_curve_name(),
3913 and the list of available named curves can be obtained with
3914 EC_get_builtin_curves().
3915 Also add a 'curve_name' member to EC_GROUP objects, which can be
3917 EC_GROUP_set_curve_name()
3918 EC_GROUP_get_curve_name()
3919 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3921 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3922 was actually never needed) and in BN_mul(). The removal in BN_mul()
3923 required a small change in bn_mul_part_recursive() and the addition
3924 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3925 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3926 bn_sub_words() and bn_add_words() except they take arrays with
3930 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3932 *) Cleanse PEM buffers before freeing them since they may contain
3934 [Benjamin Bennett <ben@psc.edu>]
3936 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3937 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3938 authentication-only ciphersuites.
3941 *) Since AES128 and AES256 share a single mask bit in the logic of
3942 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3943 kludge to work properly if AES128 is available and AES256 isn't.
3946 *) Expand security boundary to match 1.1.1 module.
3949 *) Remove redundant features: hash file source, editing of test vectors
3950 modify fipsld to use external fips_premain.c signature.
3953 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3954 run algorithm test programs.
3957 *) Make algorithm test programs more tolerant of whitespace.
3960 *) Have SSL/TLS server implementation tolerate "mismatched" record
3961 protocol version while receiving ClientHello even if the
3962 ClientHello is fragmented. (The server can't insist on the
3963 particular protocol version it has chosen before the ServerHello
3964 message has informed the client about his choice.)
3967 *) Load error codes if they are not already present instead of using a
3968 static variable. This allows them to be cleanly unloaded and reloaded.
3971 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3973 *) Introduce limits to prevent malicious keys being able to
3974 cause a denial of service. (CVE-2006-2940)
3975 [Steve Henson, Bodo Moeller]
3977 *) Fix ASN.1 parsing of certain invalid structures that can result
3978 in a denial of service. (CVE-2006-2937) [Steve Henson]
3980 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3981 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3983 *) Fix SSL client code which could crash if connecting to a
3984 malicious SSLv2 server. (CVE-2006-4343)
3985 [Tavis Ormandy and Will Drewry, Google Security Team]
3987 *) Change ciphersuite string processing so that an explicit
3988 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3989 will no longer include "AES128-SHA"), and any other similar
3990 ciphersuite (same bitmap) from *other* protocol versions (so that
3991 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3992 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3993 changes from 0.9.8b and 0.9.8d.
3996 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3998 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3999 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4001 *) Change the Unix randomness entropy gathering to use poll() when
4002 possible instead of select(), since the latter has some
4003 undesirable limitations.
4004 [Darryl Miles via Richard Levitte and Bodo Moeller]
4006 *) Disable rogue ciphersuites:
4008 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4009 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4010 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4012 The latter two were purportedly from
4013 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4016 Also deactive the remaining ciphersuites from
4017 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4018 unofficial, and the ID has long expired.
4021 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4022 dual-core machines) and other potential thread-safety issues.
4025 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4027 *) Adapt fipsld and the build system to link against the validated FIPS
4028 module in FIPS mode.
4031 *) Fixes for VC++ 2005 build under Windows.
4034 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4035 from a Windows bash shell such as MSYS. It is autodetected from the
4036 "config" script when run from a VC++ environment. Modify standard VC++
4037 build to use fipscanister.o from the GNU make build.
4040 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4042 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4043 The value now differs depending on if you build for FIPS or not.
4044 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4045 safely run with a non-FIPSed libcrypto, as it may crash because of
4046 the difference induced by this change.
4049 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4051 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4052 (part of SSL_OP_ALL). This option used to disable the
4053 countermeasure against man-in-the-middle protocol-version
4054 rollback in the SSL 2.0 server implementation, which is a bad
4055 idea. (CVE-2005-2969)
4057 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4058 for Information Security, National Institute of Advanced Industrial
4059 Science and Technology [AIST], Japan)]
4061 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4062 mainly for FIPS compliance and not fully integrated at this stage.
4065 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4066 the exponentiation using a fixed-length exponent. (Otherwise,
4067 the information leaked through timing could expose the secret key
4068 after many signatures; cf. Bleichenbacher's attack on DSA with
4072 *) Make a new fixed-window mod_exp implementation the default for
4073 RSA, DSA, and DH private-key operations so that the sequence of
4074 squares and multiplies and the memory access pattern are
4075 independent of the particular secret key. This will mitigate
4076 cache-timing and potential related attacks.
4078 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4079 and this is automatically used by BN_mod_exp_mont() if the new flag
4080 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4081 will use this BN flag for private exponents unless the flag
4082 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4083 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4085 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4087 *) Change the client implementation for SSLv23_method() and
4088 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4089 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4090 (Previously, the SSL 2.0 backwards compatible Client Hello
4091 message format would be used even with SSL_OP_NO_SSLv2.)
4094 *) Add support for smime-type MIME parameter in S/MIME messages which some
4098 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4099 a threadsafe manner. Modify rsa code to use new function and add calls
4100 to dsa and dh code (which had race conditions before).
4103 *) Include the fixed error library code in the C error file definitions
4104 instead of fixing them up at runtime. This keeps the error code
4105 structures constant.
4108 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4110 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4113 *) Fixes for newer kerberos headers. NB: the casts are needed because
4114 the 'length' field is signed on one version and unsigned on another
4115 with no (?) obvious way to tell the difference, without these VC++
4116 complains. Also the "definition" of FAR (blank) is no longer included
4117 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4118 some needed definitions.
4121 *) Undo Cygwin change.
4124 *) Added support for proxy certificates according to RFC 3820.
4125 Because they may be a security thread to unaware applications,
4126 they must be explicitely allowed in run-time. See
4127 docs/HOWTO/proxy_certificates.txt for further information.
4130 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4132 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4133 server and client random values. Previously
4134 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4135 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4137 This change has negligible security impact because:
4139 1. Server and client random values still have 24 bytes of pseudo random
4142 2. Server and client random values are sent in the clear in the initial
4145 3. The master secret is derived using the premaster secret (48 bytes in
4146 size for static RSA ciphersuites) as well as client server and random
4149 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4152 [Stephen Henson, reported by UK NISCC]
4154 *) Use Windows randomness collection on Cygwin.
4157 *) Fix hang in EGD/PRNGD query when communication socket is closed
4158 prematurely by EGD/PRNGD.
4159 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4161 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4164 *) Back-port of selected performance improvements from development
4165 branch, as well as improved support for PowerPC platforms.
4168 *) Add lots of checks for memory allocation failure, error codes to indicate
4169 failure and freeing up memory if a failure occurs.
4170 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4172 *) Add new -passin argument to dgst.
4175 *) Perform some character comparisons of different types in X509_NAME_cmp:
4176 this is needed for some certificates that reencode DNs into UTF8Strings
4177 (in violation of RFC3280) and can't or wont issue name rollover
4181 *) Make an explicit check during certificate validation to see that
4182 the CA setting in each certificate on the chain is correct. As a
4183 side effect always do the following basic checks on extensions,
4184 not just when there's an associated purpose to the check:
4186 - if there is an unhandled critical extension (unless the user
4187 has chosen to ignore this fault)
4188 - if the path length has been exceeded (if one is set at all)
4189 - that certain extensions fit the associated purpose (if one has
4193 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4195 *) Avoid a race condition when CRLs are checked in a multi threaded
4196 environment. This would happen due to the reordering of the revoked
4197 entries during signature checking and serial number lookup. Now the
4198 encoding is cached and the serial number sort performed under a lock.
4199 Add new STACK function sk_is_sorted().
4202 *) Add Delta CRL to the extension code.
4205 *) Various fixes to s3_pkt.c so alerts are sent properly.
4206 [David Holmes <d.holmes@f5.com>]
4208 *) Reduce the chances of duplicate issuer name and serial numbers (in
4209 violation of RFC3280) using the OpenSSL certificate creation utilities.
4210 This is done by creating a random 64 bit value for the initial serial
4211 number when a serial number file is created or when a self signed
4212 certificate is created using 'openssl req -x509'. The initial serial
4213 number file is created using 'openssl x509 -next_serial' in CA.pl
4214 rather than being initialized to 1.
4217 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4219 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4220 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4221 [Joe Orton, Steve Henson]
4223 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4225 [Joe Orton, Steve Henson]
4227 *) Make it possible to have multiple active certificates with the same
4228 subject in the CA index file. This is done only if the keyword
4229 'unique_subject' is set to 'no' in the main CA section (default
4230 if 'CA_default') of the configuration file. The value is saved
4231 with the database itself in a separate index attribute file,
4232 named like the index file with '.attr' appended to the name.
4235 *) X509 verify fixes. Disable broken certificate workarounds when
4236 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4237 keyUsage extension present. Don't accept CRLs with unhandled critical
4238 extensions: since verify currently doesn't process CRL extensions this
4239 rejects a CRL with *any* critical extensions. Add new verify error codes
4243 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4244 A clarification of RFC2560 will require the use of OCTET STRINGs and
4245 some implementations cannot handle the current raw format. Since OpenSSL
4246 copies and compares OCSP nonces as opaque blobs without any attempt at
4247 parsing them this should not create any compatibility issues.
4250 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4251 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4252 this HMAC (and other) operations are several times slower than OpenSSL
4256 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4257 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4259 *) Use the correct content when signing type "other".
4262 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4264 *) Fix various bugs revealed by running the NISCC test suite:
4266 Stop out of bounds reads in the ASN1 code when presented with
4267 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4269 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4271 If verify callback ignores invalid public key errors don't try to check
4272 certificate signature with the NULL public key.
4276 *) New -ignore_err option in ocsp application to stop the server
4277 exiting on the first error in a request.
4280 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4281 if the server requested one: as stated in TLS 1.0 and SSL 3.0