5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
8 this fixes a limiation in previous versions of OpenSSL.
11 *) Experimental encrypt-then-mac support.
13 Experimental support for encrypt then mac from
14 draft-gutmann-tls-encrypt-then-mac-02.txt
16 To enable it set the appropriate extension number (0x42 for the test
17 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
19 For non-compliant peers (i.e. just about everything) this should have no
22 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
26 *) Add callbacks supporting generation and retrieval of supplemental
28 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
30 *) Add EVP support for key wrapping algorithms, to avoid problems with
31 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
32 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
33 algorithms and include tests cases.
36 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
40 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
41 MGF1 digest and OAEP label.
44 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
45 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
46 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
49 *) Make openssl verify return errors.
50 [Chris Palmer <palmer@google.com> and Ben Laurie]
52 *) New function ASN1_TIME_diff to calculate the difference between two
53 ASN1_TIME structures or one structure and the current time.
56 *) Update fips_test_suite to support multiple command line options. New
57 test to induce all self test errors in sequence and check expected
61 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
62 sign or verify all in one operation.
65 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
66 test programs and fips_test_suite. Includes functionality to parse
67 the minimal script output of fipsalgest.pl directly.
70 *) Add authorisation parameter to FIPS_module_mode_set().
73 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
76 *) Use separate DRBG fields for internal and external flags. New function
77 FIPS_drbg_health_check() to perform on demand health checking. Add
78 generation tests to fips_test_suite with reduced health check interval to
79 demonstrate periodic health checking. Add "nodh" option to
80 fips_test_suite to skip very slow DH test.
83 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
87 *) More extensive health check for DRBG checking many more failure modes.
88 New function FIPS_selftest_drbg_all() to handle every possible DRBG
89 combination: call this in fips_test_suite.
92 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
93 and POST to handle Dual EC cases.
96 *) Add support for canonical generation of DSA parameter 'g'. See
99 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
100 POST to handle HMAC cases.
103 *) Add functions FIPS_module_version() and FIPS_module_version_text()
104 to return numerical and string versions of the FIPS module number.
107 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
108 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
109 outside the validated module in the FIPS capable OpenSSL.
112 *) Minor change to DRBG entropy callback semantics. In some cases
113 there is no multiple of the block length between min_len and
114 max_len. Allow the callback to return more than max_len bytes
115 of entropy but discard any extra: it is the callback's responsibility
116 to ensure that the extra data discarded does not impact the
117 requested amount of entropy.
120 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
121 information in FIPS186-3, SP800-57 and SP800-131A.
124 *) CCM support via EVP. Interface is very similar to GCM case except we
125 must supply all data in one chunk (i.e. no update, final) and the
126 message length must be supplied if AAD is used. Add algorithm test
130 *) Initial version of POST overhaul. Add POST callback to allow the status
131 of POST to be monitored and/or failures induced. Modify fips_test_suite
132 to use callback. Always run all selftests even if one fails.
135 *) XTS support including algorithm test driver in the fips_gcmtest program.
136 Note: this does increase the maximum key length from 32 to 64 bytes but
137 there should be no binary compatibility issues as existing applications
138 will never use XTS mode.
141 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
142 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
143 performs algorithm blocking for unapproved PRNG types. Also do not
144 set PRNG type in FIPS_mode_set(): leave this to the application.
145 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
146 the standard OpenSSL PRNG: set additional data to a date time vector.
149 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
150 This shouldn't present any incompatibility problems because applications
151 shouldn't be using these directly and any that are will need to rethink
152 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
155 *) Extensive self tests and health checking required by SP800-90 DRBG.
156 Remove strength parameter from FIPS_drbg_instantiate and always
157 instantiate at maximum supported strength.
160 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
163 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
166 *) New function DH_compute_key_padded() to compute a DH key and pad with
167 leading zeroes if needed: this complies with SP800-56A et al.
170 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
171 anything, incomplete, subject to change and largely untested at present.
174 *) Modify fipscanisteronly build option to only build the necessary object
175 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
178 *) Add experimental option FIPSSYMS to give all symbols in
179 fipscanister.o and FIPS or fips prefix. This will avoid
180 conflicts with future versions of OpenSSL. Add perl script
181 util/fipsas.pl to preprocess assembly language source files
182 and rename any affected symbols.
185 *) Add selftest checks and algorithm block of non-fips algorithms in
186 FIPS mode. Remove DES2 from selftests.
189 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
190 return internal method without any ENGINE dependencies. Add new
191 tiny fips sign and verify functions.
194 *) New build option no-ec2m to disable characteristic 2 code.
197 *) New build option "fipscanisteronly". This only builds fipscanister.o
198 and (currently) associated fips utilities. Uses the file Makefile.fips
199 instead of Makefile.org as the prototype.
202 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
203 Update fips_gcmtest to use IV generator.
206 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
207 setting output buffer to NULL. The *Final function must be
208 called although it will not retrieve any additional data. The tag
209 can be set or retrieved with a ctrl. The IV length is by default 12
210 bytes (96 bits) but can be set to an alternative value. If the IV
211 length exceeds the maximum IV length (currently 16 bytes) it cannot be
215 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
216 underlying do_cipher function handles all cipher semantics itself
217 including padding and finalisation. This is useful if (for example)
218 an ENGINE cipher handles block padding itself. The behaviour of
219 do_cipher is subtly changed if this flag is set: the return value
220 is the number of characters written to the output buffer (zero is
221 no longer an error code) or a negative error code. Also if the
222 input buffer is NULL and length 0 finalisation should be performed.
225 *) If a candidate issuer certificate is already part of the constructed
226 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
229 *) Improve forward-security support: add functions
231 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
232 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
234 for use by SSL/TLS servers; the callback function will be called whenever a
235 new session is created, and gets to decide whether the session may be
236 cached to make it resumable (return 0) or not (return 1). (As by the
237 SSL/TLS protocol specifications, the session_id sent by the server will be
238 empty to indicate that the session is not resumable; also, the server will
239 not generate RFC 4507 (RFC 5077) session tickets.)
241 A simple reasonable callback implementation is to return is_forward_secure.
242 This parameter will be set to 1 or 0 depending on the ciphersuite selected
243 by the SSL/TLS server library, indicating whether it can provide forward
245 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
247 *) New -verify_name option in command line utilities to set verification
251 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
252 Add CMAC pkey methods.
255 *) Experimental regnegotiation in s_server -www mode. If the client
256 browses /reneg connection is renegotiated. If /renegcert it is
257 renegotiated requesting a certificate.
260 *) Add an "external" session cache for debugging purposes to s_server. This
261 should help trace issues which normally are only apparent in deployed
262 multi-process servers.
265 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
266 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
267 BIO_set_cipher() and some obscure PEM functions were changed so they
268 can now return an error. The RAND changes required a change to the
269 RAND_METHOD structure.
272 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
273 a gcc attribute to warn if the result of a function is ignored. This
274 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
275 whose return value is often ignored.
278 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
280 *) Keep original DTLS digest and encryption contexts in retransmission
281 structures so we can use the previous session parameters if they need
282 to be resent. (CVE-2013-6450)
285 *) TLS pad extension: draft-agl-tls-padding-02
287 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
288 TLS client Hello record length value would otherwise be > 255 and
289 less that 512 pad with a dummy extension containing zeroes so it
290 is at least 512 bytes long.
292 To enable it use an unused extension number (for example chrome uses
295 e.g. -DTLSEXT_TYPE_padding=35655
297 Since the extension is ignored the actual number doesn't matter as long
298 as it doesn't clash with any existing extension.
300 This will be updated when the extension gets an official number.
302 [Adam Langley, Steve Henson]
304 *) Add functions to allocate and set the fields of an ECDSA_METHOD
306 [Douglas E. Engert, Steve Henson]
308 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
309 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
310 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
311 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
312 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
313 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
314 [Rob Stradling, Adam Langley]
316 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
317 difference in days and seconds between two tm or ASN1_TIME structures.
320 *) Add -rev test option to s_server to just reverse order of characters
321 received by client and send back to server. Also prints an abbreviated
322 summary of the connection parameters.
325 *) New option -brief for s_client and s_server to print out a brief summary
326 of connection parameters.
329 *) Add callbacks for arbitrary TLS extensions.
330 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
332 *) New option -crl_download in several openssl utilities to download CRLs
333 from CRLDP extension in certificates.
336 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
339 *) New function X509_CRL_diff to generate a delta CRL from the difference
340 of two full CRLs. Add support to "crl" utility.
343 *) New functions to set lookup_crls function and to retrieve
344 X509_STORE from X509_STORE_CTX.
347 *) Print out deprecated issuer and subject unique ID fields in
351 *) Extend OCSP I/O functions so they can be used for simple general purpose
352 HTTP as well as OCSP. New wrapper function which can be used to download
353 CRLs using the OCSP API.
356 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
359 *) SSL_CONF* functions. These provide a common framework for application
360 configuration using configuration files or command lines.
363 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
364 message callback and prints the results. Needs compile time option
365 "enable-ssl-trace". New options to s_client and s_server to enable
369 *) New ctrl and macro to retrieve supported points extensions.
370 Print out extension in s_server and s_client.
373 *) New functions to retrieve certificate signature and signature
377 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
381 *) New Suite B modes for TLS code. These use and enforce the requirements
382 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
383 only use Suite B curves. The Suite B modes can be set by using the
384 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
387 *) New chain verification flags for Suite B levels of security. Check
388 algorithms are acceptable when flags are set in X509_verify_cert.
391 *) Make tls1_check_chain return a set of flags indicating checks passed
392 by a certificate chain. Add additional tests to handle client
393 certificates: checks for matching certificate type and issuer name
397 *) If an attempt is made to use a signature algorithm not in the peer
398 preference list abort the handshake. If client has no suitable
399 signature algorithms in response to a certificate request do not
403 *) If server EC tmp key is not in client preference list abort handshake.
406 *) Add support for certificate stores in CERT structure. This makes it
407 possible to have different stores per SSL structure or one store in
408 the parent SSL_CTX. Include distint stores for certificate chain
409 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
410 to build and store a certificate chain in CERT structure: returing
411 an error if the chain cannot be built: this will allow applications
412 to test if a chain is correctly configured.
414 Note: if the CERT based stores are not set then the parent SSL_CTX
415 store is used to retain compatibility with existing behaviour.
419 *) New function ssl_set_client_disabled to set a ciphersuite disabled
420 mask based on the current session, check mask when sending client
421 hello and checking the requested ciphersuite.
424 *) New ctrls to retrieve and set certificate types in a certificate
425 request message. Print out received values in s_client. If certificate
426 types is not set with custom values set sensible values based on
427 supported signature algorithms.
430 *) Support for distinct client and server supported signature algorithms.
433 *) Add certificate callback. If set this is called whenever a certificate
434 is required by client or server. An application can decide which
435 certificate chain to present based on arbitrary criteria: for example
436 supported signature algorithms. Add very simple example to s_server.
437 This fixes many of the problems and restrictions of the existing client
438 certificate callback: for example you can now clear an existing
439 certificate and specify the whole chain.
442 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
443 the certificate can be used for (if anything). Set valid_flags field
444 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
445 to have similar checks in it.
447 Add new "cert_flags" field to CERT structure and include a "strict mode".
448 This enforces some TLS certificate requirements (such as only permitting
449 certificate signature algorithms contained in the supported algorithms
450 extension) which some implementations ignore: this option should be used
451 with caution as it could cause interoperability issues.
454 *) Update and tidy signature algorithm extension processing. Work out
455 shared signature algorithms based on preferences and peer algorithms
456 and print them out in s_client and s_server. Abort handshake if no
457 shared signature algorithms.
460 *) Add new functions to allow customised supported signature algorithms
461 for SSL and SSL_CTX structures. Add options to s_client and s_server
465 *) New function SSL_certs_clear() to delete all references to certificates
466 from an SSL structure. Before this once a certificate had been added
467 it couldn't be removed.
470 *) Integrate hostname, email address and IP address checking with certificate
471 verification. New verify options supporting checking in opensl utility.
474 *) Fixes and wildcard matching support to hostname and email checking
475 functions. Add manual page.
476 [Florian Weimer (Red Hat Product Security Team)]
478 *) New functions to check a hostname email or IP address against a
479 certificate. Add options x509 utility to print results of checks against
483 *) Fix OCSP checking.
484 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
486 *) Initial experimental support for explicitly trusted non-root CAs.
487 OpenSSL still tries to build a complete chain to a root but if an
488 intermediate CA has a trust setting included that is used. The first
489 setting is used: whether to trust (e.g., -addtrust option to the x509
493 *) Add -trusted_first option which attempts to find certificates in the
494 trusted store even if an untrusted chain is also supplied.
497 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
498 platform support for Linux and Android.
501 *) Support for linux-x32, ILP32 environment in x86_64 framework.
504 *) RFC 5878 (TLS Authorization Extensions) support.
505 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
507 *) Experimental multi-implementation support for FIPS capable OpenSSL.
508 When in FIPS mode the approved implementations are used as normal,
509 when not in FIPS mode the internal unapproved versions are used instead.
510 This means that the FIPS capable OpenSSL isn't forced to use the
511 (often lower perfomance) FIPS implementations outside FIPS mode.
514 *) Transparently support X9.42 DH parameters when calling
515 PEM_read_bio_DHparameters. This means existing applications can handle
516 the new parameter format automatically.
519 *) Initial experimental support for X9.42 DH parameter format: mainly
520 to support use of 'q' parameter for RFC5114 parameters.
523 *) Add DH parameters from RFC5114 including test data to dhtest.
526 *) Support for automatic EC temporary key parameter selection. If enabled
527 the most preferred EC parameters are automatically used instead of
528 hardcoded fixed parameters. Now a server just has to call:
529 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
530 support ECDH and use the most appropriate parameters.
533 *) Enhance and tidy EC curve and point format TLS extension code. Use
534 static structures instead of allocation if default values are used.
535 New ctrls to set curves we wish to support and to retrieve shared curves.
536 Print out shared curves in s_server. New options to s_server and s_client
537 to set list of supported curves.
540 *) New ctrls to retrieve supported signature algorithms and
541 supported curve values as an array of NIDs. Extend openssl utility
542 to print out received values.
545 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
546 between NIDs and the more common NIST names such as "P-256". Enhance
547 ecparam utility and ECC method to recognise the NIST names for curves.
550 *) Enhance SSL/TLS certificate chain handling to support different
551 chains for each certificate instead of one chain in the parent SSL_CTX.
554 *) Support for fixed DH ciphersuite client authentication: where both
555 server and client use DH certificates with common parameters.
558 *) Support for fixed DH ciphersuites: those requiring DH server
562 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
564 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
565 supporting platforms or when small records were transferred.
566 [Andy Polyakov, Steve Henson]
568 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
570 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
572 This addresses the flaw in CBC record processing discovered by
573 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
574 at: http://www.isg.rhul.ac.uk/tls/
576 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
577 Security Group at Royal Holloway, University of London
578 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
579 Emilia Käsper for the initial patch.
581 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
583 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
584 ciphersuites which can be exploited in a denial of service attack.
585 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
586 and detecting this bug and to Wolfgang Ettlinger
587 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
591 *) Return an error when checking OCSP signatures when key is NULL.
592 This fixes a DoS attack. (CVE-2013-0166)
595 *) Make openssl verify return errors.
596 [Chris Palmer <palmer@google.com> and Ben Laurie]
598 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
599 the right response is stapled. Also change SSL_get_certificate()
600 so it returns the certificate actually sent.
601 See http://rt.openssl.org/Ticket/Display.html?id=2836.
602 [Rob Stradling <rob.stradling@comodo.com>]
604 *) Fix possible deadlock when decoding public keys.
607 *) Don't use TLS 1.0 record version number in initial client hello
611 Changes between 1.0.1b and 1.0.1c [10 May 2012]
613 *) Sanity check record length before skipping explicit IV in TLS
614 1.2, 1.1 and DTLS to fix DoS attack.
616 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
617 fuzzing as a service testing platform.
621 *) Initialise tkeylen properly when encrypting CMS messages.
622 Thanks to Solar Designer of Openwall for reporting this issue.
625 *) In FIPS mode don't try to use composite ciphers as they are not
629 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
631 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
632 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
633 mean any application compiled against OpenSSL 1.0.0 headers setting
634 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
635 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
636 0x10000000L Any application which was previously compiled against
637 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
638 will need to be recompiled as a result. Letting be results in
639 inability to disable specifically TLS 1.1 and in client context,
640 in unlike event, limit maximum offered version to TLS 1.0 [see below].
643 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
644 disable just protocol X, but all protocols above X *if* there are
645 protocols *below* X still enabled. In more practical terms it means
646 that if application wants to disable TLS1.0 in favor of TLS1.1 and
647 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
648 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
652 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
654 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
655 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
656 in CRYPTO_realloc_clean.
658 Thanks to Tavis Ormandy, Google Security Team, for discovering this
659 issue and to Adam Langley <agl@chromium.org> for fixing it.
661 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
663 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
666 *) Workarounds for some broken servers that "hang" if a client hello
667 record length exceeds 255 bytes.
669 1. Do not use record version number > TLS 1.0 in initial client
670 hello: some (but not all) hanging servers will now work.
671 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
672 the number of ciphers sent in the client hello. This should be
673 set to an even number, such as 50, for example by passing:
674 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
675 Most broken servers should now work.
676 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
677 TLS 1.2 client support entirely.
680 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
683 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
685 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
686 STRING form instead of a DigestInfo.
689 *) The format used for MDC2 RSA signatures is inconsistent between EVP
690 and the RSA_sign/RSA_verify functions. This was made more apparent when
691 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
692 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
693 the correct format in RSA_verify so both forms transparently work.
696 *) Some servers which support TLS 1.0 can choke if we initially indicate
697 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
698 encrypted premaster secret. As a workaround use the maximum pemitted
699 client version in client hello, this should keep such servers happy
700 and still work with previous versions of OpenSSL.
703 *) Add support for TLS/DTLS heartbeats.
704 [Robin Seggelmann <seggelmann@fh-muenster.de>]
706 *) Add support for SCTP.
707 [Robin Seggelmann <seggelmann@fh-muenster.de>]
709 *) Improved PRNG seeding for VOS.
710 [Paul Green <Paul.Green@stratus.com>]
712 *) Extensive assembler packs updates, most notably:
714 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
715 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
716 - x86_64: bit-sliced AES implementation;
717 - ARM: NEON support, contemporary platforms optimizations;
718 - s390x: z196 support;
719 - *: GHASH and GF(2^m) multiplication implementations;
723 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
724 (removal of unnecessary code)
725 [Peter Sylvester <peter.sylvester@edelweb.fr>]
727 *) Add TLS key material exporter from RFC 5705.
730 *) Add DTLS-SRTP negotiation from RFC 5764.
733 *) Add Next Protocol Negotiation,
734 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
735 disabled with a no-npn flag to config or Configure. Code donated
737 [Adam Langley <agl@google.com> and Ben Laurie]
739 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
740 NIST-P256, NIST-P521, with constant-time single point multiplication on
741 typical inputs. Compiler support for the nonstandard type __uint128_t is
742 required to use this (present in gcc 4.4 and later, for 64-bit builds).
743 Code made available under Apache License version 2.0.
745 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
746 line to include this in your build of OpenSSL, and run "make depend" (or
747 "make update"). This enables the following EC_METHODs:
749 EC_GFp_nistp224_method()
750 EC_GFp_nistp256_method()
751 EC_GFp_nistp521_method()
753 EC_GROUP_new_by_curve_name() will automatically use these (while
754 EC_GROUP_new_curve_GFp() currently prefers the more flexible
756 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
758 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
759 all platforms. Move ssize_t definition from e_os.h to the public
760 header file e_os2.h as it now appears in public header file cms.h
763 *) New -sigopt option to the ca, req and x509 utilities. Additional
764 signature parameters can be passed using this option and in
768 *) Add RSA PSS signing function. This will generate and set the
769 appropriate AlgorithmIdentifiers for PSS based on those in the
770 corresponding EVP_MD_CTX structure. No application support yet.
773 *) Support for companion algorithm specific ASN1 signing routines.
774 New function ASN1_item_sign_ctx() signs a pre-initialised
775 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
776 the appropriate parameters.
779 *) Add new algorithm specific ASN1 verification initialisation function
780 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
781 handling will be the same no matter what EVP_PKEY_METHOD is used.
782 Add a PSS handler to support verification of PSS signatures: checked
783 against a number of sample certificates.
786 *) Add signature printing for PSS. Add PSS OIDs.
787 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
789 *) Add algorithm specific signature printing. An individual ASN1 method
790 can now print out signatures instead of the standard hex dump.
792 More complex signatures (e.g. PSS) can print out more meaningful
793 information. Include DSA version that prints out the signature
797 *) Password based recipient info support for CMS library: implementing
801 *) Split password based encryption into PBES2 and PBKDF2 functions. This
802 neatly separates the code into cipher and PBE sections and is required
803 for some algorithms that split PBES2 into separate pieces (such as
807 *) Session-handling fixes:
808 - Fix handling of connections that are resuming with a session ID,
809 but also support Session Tickets.
810 - Fix a bug that suppressed issuing of a new ticket if the client
811 presented a ticket with an expired session.
812 - Try to set the ticket lifetime hint to something reasonable.
813 - Make tickets shorter by excluding irrelevant information.
814 - On the client side, don't ignore renewed tickets.
815 [Adam Langley, Bodo Moeller (Google)]
817 *) Fix PSK session representation.
820 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
822 This work was sponsored by Intel.
825 *) Add GCM support to TLS library. Some custom code is needed to split
826 the IV between the fixed (from PRF) and explicit (from TLS record)
827 portions. This adds all GCM ciphersuites supported by RFC5288 and
828 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
829 add a special AESGCM string for GCM only.
832 *) Expand range of ctrls for AES GCM. Permit setting invocation
833 field on decrypt and retrieval of invocation field only on encrypt.
836 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
837 As required by RFC5289 these ciphersuites cannot be used if for
838 versions of TLS earlier than 1.2.
841 *) For FIPS capable OpenSSL interpret a NULL default public key method
842 as unset and return the appopriate default but do *not* set the default.
843 This means we can return the appopriate method in applications that
844 swicth between FIPS and non-FIPS modes.
847 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
848 ENGINE is used then we cannot handle that in the FIPS module so we
849 keep original code iff non-FIPS operations are allowed.
852 *) Add -attime option to openssl utilities.
853 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
855 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
858 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
859 FIPS EC methods unconditionally for now.
862 *) New build option no-ec2m to disable characteristic 2 code.
865 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
866 all cases can be covered as some introduce binary incompatibilities.
869 *) Redirect RSA operations to FIPS module including keygen,
870 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
873 *) Add similar low level API blocking to ciphers.
876 *) Low level digest APIs are not approved in FIPS mode: any attempt
877 to use these will cause a fatal error. Applications that *really* want
878 to use them can use the private_* version instead.
881 *) Redirect cipher operations to FIPS module for FIPS builds.
884 *) Redirect digest operations to FIPS module for FIPS builds.
887 *) Update build system to add "fips" flag which will link in fipscanister.o
888 for static and shared library builds embedding a signature if needed.
891 *) Output TLS supported curves in preference order instead of numerical
892 order. This is currently hardcoded for the highest order curves first.
893 This should be configurable so applications can judge speed vs strength.
896 *) Add TLS v1.2 server support for client authentication.
899 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
903 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
904 FIPS modules versions.
907 *) Add TLS v1.2 client side support for client authentication. Keep cache
908 of handshake records longer as we don't know the hash algorithm to use
909 until after the certificate request message is received.
912 *) Initial TLS v1.2 client support. Add a default signature algorithms
913 extension including all the algorithms we support. Parse new signature
914 format in client key exchange. Relax some ECC signing restrictions for
915 TLS v1.2 as indicated in RFC5246.
918 *) Add server support for TLS v1.2 signature algorithms extension. Switch
919 to new signature format when needed using client digest preference.
920 All server ciphersuites should now work correctly in TLS v1.2. No client
921 support yet and no support for client certificates.
924 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
925 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
926 ciphersuites. At present only RSA key exchange ciphersuites work with
927 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
928 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
929 and version checking.
932 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
933 with this defined it will not be affected by any changes to ssl internal
934 structures. Add several utility functions to allow openssl application
935 to work with OPENSSL_NO_SSL_INTERN defined.
939 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
941 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
944 *) Permit abbreviated handshakes when renegotiating using the function
945 SSL_renegotiate_abbreviated().
946 [Robin Seggelmann <seggelmann@fh-muenster.de>]
948 *) Add call to ENGINE_register_all_complete() to
949 ENGINE_load_builtin_engines(), so some implementations get used
950 automatically instead of needing explicit application support.
953 *) Add support for TLS key exporter as described in RFC5705.
954 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
956 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
957 a few changes are required:
959 Add SSL_OP_NO_TLSv1_1 flag.
961 Update version checking logic to handle version 1.1.
962 Add explicit IV handling (ported from DTLS code).
963 Add command line options to s_client/s_server.
966 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
968 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
970 This addresses the flaw in CBC record processing discovered by
971 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
972 at: http://www.isg.rhul.ac.uk/tls/
974 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
975 Security Group at Royal Holloway, University of London
976 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
977 Emilia Käsper for the initial patch.
979 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
981 *) Return an error when checking OCSP signatures when key is NULL.
982 This fixes a DoS attack. (CVE-2013-0166)
985 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
986 the right response is stapled. Also change SSL_get_certificate()
987 so it returns the certificate actually sent.
988 See http://rt.openssl.org/Ticket/Display.html?id=2836.
990 [Rob Stradling <rob.stradling@comodo.com>]
992 *) Fix possible deadlock when decoding public keys.
995 Changes between 1.0.0i and 1.0.0j [10 May 2012]
997 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
1000 *) Sanity check record length before skipping explicit IV in DTLS
1003 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
1004 fuzzing as a service testing platform.
1008 *) Initialise tkeylen properly when encrypting CMS messages.
1009 Thanks to Solar Designer of Openwall for reporting this issue.
1012 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1014 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1015 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1016 in CRYPTO_realloc_clean.
1018 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1019 issue and to Adam Langley <agl@chromium.org> for fixing it.
1021 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1023 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1025 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1026 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1027 content decryption and always return the same error. Note: this attack
1028 needs on average 2^20 messages so it only affects automated senders. The
1029 old behaviour can be reenabled in the CMS code by setting the
1030 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1031 an MMA defence is not necessary.
1032 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1033 this issue. (CVE-2012-0884)
1036 *) Fix CVE-2011-4619: make sure we really are receiving a
1037 client hello before rejecting multiple SGC restarts. Thanks to
1038 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1041 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1043 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1044 Thanks to Antonio Martin, Enterprise Secure Access Research and
1045 Development, Cisco Systems, Inc. for discovering this bug and
1046 preparing a fix. (CVE-2012-0050)
1049 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1051 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1052 of the Vaudenay padding oracle attack on CBC mode encryption
1053 which enables an efficient plaintext recovery attack against
1054 the OpenSSL implementation of DTLS. Their attack exploits timing
1055 differences arising during decryption processing. A research
1056 paper describing this attack can be found at:
1057 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1058 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1059 Security Group at Royal Holloway, University of London
1060 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1061 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1062 for preparing the fix. (CVE-2011-4108)
1063 [Robin Seggelmann, Michael Tuexen]
1065 *) Clear bytes used for block padding of SSL 3.0 records.
1067 [Adam Langley (Google)]
1069 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1070 Kadianakis <desnacked@gmail.com> for discovering this issue and
1071 Adam Langley for preparing the fix. (CVE-2011-4619)
1072 [Adam Langley (Google)]
1074 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1075 [Andrey Kulikov <amdeich@gmail.com>]
1077 *) Prevent malformed RFC3779 data triggering an assertion failure.
1078 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1079 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1080 [Rob Austein <sra@hactrn.net>]
1082 *) Improved PRNG seeding for VOS.
1083 [Paul Green <Paul.Green@stratus.com>]
1085 *) Fix ssl_ciph.c set-up race.
1086 [Adam Langley (Google)]
1088 *) Fix spurious failures in ecdsatest.c.
1089 [Emilia Käsper (Google)]
1091 *) Fix the BIO_f_buffer() implementation (which was mixing different
1092 interpretations of the '..._len' fields).
1093 [Adam Langley (Google)]
1095 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1096 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1097 threads won't reuse the same blinding coefficients.
1099 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1100 lock to call BN_BLINDING_invert_ex, and avoids one use of
1101 BN_BLINDING_update for each BN_BLINDING structure (previously,
1102 the last update always remained unused).
1103 [Emilia Käsper (Google)]
1105 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1106 [Bob Buckholz (Google)]
1108 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1110 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1111 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1112 [Kaspar Brand <ossl@velox.ch>]
1114 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1115 for multi-threaded use of ECDH. (CVE-2011-3210)
1116 [Adam Langley (Google)]
1118 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1121 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1122 signature public key algorithm by using OID xref utilities instead.
1123 Before this you could only use some ECC ciphersuites with SHA1 only.
1126 *) Add protection against ECDSA timing attacks as mentioned in the paper
1127 by Billy Bob Brumley and Nicola Tuveri, see:
1129 http://eprint.iacr.org/2011/232.pdf
1131 [Billy Bob Brumley and Nicola Tuveri]
1133 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1135 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1136 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1138 *) Fix bug in string printing code: if *any* escaping is enabled we must
1139 escape the escape character (backslash) or the resulting string is
1143 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1145 *) Disable code workaround for ancient and obsolete Netscape browsers
1146 and servers: an attacker can use it in a ciphersuite downgrade attack.
1147 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1150 *) Fixed J-PAKE implementation error, originally discovered by
1151 Sebastien Martini, further info and confirmation from Stefan
1152 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1155 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1157 *) Fix extension code to avoid race conditions which can result in a buffer
1158 overrun vulnerability: resumed sessions must not be modified as they can
1159 be shared by multiple threads. CVE-2010-3864
1162 *) Fix WIN32 build system to correctly link an ENGINE directory into
1166 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1168 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1170 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1172 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1174 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1175 context. The operation can be customised via the ctrl mechanism in
1176 case ENGINEs want to include additional functionality.
1179 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1182 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1183 output hashes compatible with older versions of OpenSSL.
1184 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1186 *) Fix compression algorithm handling: if resuming a session use the
1187 compression algorithm of the resumed session instead of determining
1188 it from client hello again. Don't allow server to change algorithm.
1191 *) Add load_crls() function to apps tidying load_certs() too. Add option
1192 to verify utility to allow additional CRLs to be included.
1195 *) Update OCSP request code to permit adding custom headers to the request:
1196 some responders need this.
1199 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1201 [Julia Lawall <julia@diku.dk>]
1203 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1204 needlessly dereferenced structures, used obsolete functions and
1205 didn't handle all updated verify codes correctly.
1208 *) Disable MD2 in the default configuration.
1211 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1212 indicate the initial BIO being pushed or popped. This makes it possible
1213 to determine whether the BIO is the one explicitly called or as a result
1214 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1215 it handles reference counts correctly and doesn't zero out the I/O bio
1216 when it is not being explicitly popped. WARNING: applications which
1217 included workarounds for the old buggy behaviour will need to be modified
1218 or they could free up already freed BIOs.
1221 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1222 renaming to all platforms (within the 0.9.8 branch, this was
1223 done conditionally on Netware platforms to avoid a name clash).
1224 [Guenter <lists@gknw.net>]
1226 *) Add ECDHE and PSK support to DTLS.
1227 [Michael Tuexen <tuexen@fh-muenster.de>]
1229 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1233 *) Add "missing" function EVP_MD_flags() (without this the only way to
1234 retrieve a digest flags is by accessing the structure directly. Update
1235 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1236 or cipher is registered as in the "from" argument. Print out all
1237 registered digests in the dgst usage message instead of manually
1238 attempting to work them out.
1241 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1242 this allows the use of compression and extensions. Change default cipher
1243 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1244 by default unless an application cipher string requests it.
1247 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1248 key ids to find matching certificates and keys but some PKCS#12 files
1249 don't follow the (somewhat unwritten) rules and this strategy fails.
1250 Now just gather all certificates together and the first private key
1251 then look for the first certificate that matches the key.
1254 *) Support use of registered digest and cipher names for dgst and cipher
1255 commands instead of having to add each one as a special case. So now
1262 openssl dgst -sha256 foo
1264 and this works for ENGINE based algorithms too.
1268 *) Update Gost ENGINE to support parameter files.
1269 [Victor B. Wagner <vitus@cryptocom.ru>]
1271 *) Support GeneralizedTime in ca utility.
1272 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1274 *) Enhance the hash format used for certificate directory links. The new
1275 form uses the canonical encoding (meaning equivalent names will work
1276 even if they aren't identical) and uses SHA1 instead of MD5. This form
1277 is incompatible with the older format and as a result c_rehash should
1278 be used to rebuild symbolic links.
1281 *) Make PKCS#8 the default write format for private keys, replacing the
1282 traditional format. This form is standardised, more secure and doesn't
1283 include an implicit MD5 dependency.
1286 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1287 committed to OpenSSL should pass this lot as a minimum.
1290 *) Add session ticket override functionality for use by EAP-FAST.
1291 [Jouni Malinen <j@w1.fi>]
1293 *) Modify HMAC functions to return a value. Since these can be implemented
1294 in an ENGINE errors can occur.
1297 *) Type-checked OBJ_bsearch_ex.
1300 *) Type-checked OBJ_bsearch. Also some constification necessitated
1301 by type-checking. Still to come: TXT_DB, bsearch(?),
1302 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1306 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1307 seconds to a tm structure directly, instead of going through OS
1308 specific date routines. This avoids any issues with OS routines such
1309 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1310 and X509_time_adj_ex() to cover the extended range. The existing
1311 X509_time_adj() is still usable and will no longer have any date issues.
1314 *) Delta CRL support. New use deltas option which will attempt to locate
1315 and search any appropriate delta CRLs available.
1317 This work was sponsored by Google.
1320 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1321 code and add additional score elements. Validate alternate CRL paths
1322 as part of the CRL checking and indicate a new error "CRL path validation
1323 error" in this case. Applications wanting additional details can use
1324 the verify callback and check the new "parent" field. If this is not
1325 NULL CRL path validation is taking place. Existing applications wont
1326 see this because it requires extended CRL support which is off by
1329 This work was sponsored by Google.
1332 *) Support for freshest CRL extension.
1334 This work was sponsored by Google.
1337 *) Initial indirect CRL support. Currently only supported in the CRLs
1338 passed directly and not via lookup. Process certificate issuer
1339 CRL entry extension and lookup CRL entries by bother issuer name
1340 and serial number. Check and process CRL issuer entry in IDP extension.
1342 This work was sponsored by Google.
1345 *) Add support for distinct certificate and CRL paths. The CRL issuer
1346 certificate is validated separately in this case. Only enabled if
1347 an extended CRL support flag is set: this flag will enable additional
1348 CRL functionality in future.
1350 This work was sponsored by Google.
1353 *) Add support for policy mappings extension.
1355 This work was sponsored by Google.
1358 *) Fixes to pathlength constraint, self issued certificate handling,
1359 policy processing to align with RFC3280 and PKITS tests.
1361 This work was sponsored by Google.
1364 *) Support for name constraints certificate extension. DN, email, DNS
1365 and URI types are currently supported.
1367 This work was sponsored by Google.
1370 *) To cater for systems that provide a pointer-based thread ID rather
1371 than numeric, deprecate the current numeric thread ID mechanism and
1372 replace it with a structure and associated callback type. This
1373 mechanism allows a numeric "hash" to be extracted from a thread ID in
1374 either case, and on platforms where pointers are larger than 'long',
1375 mixing is done to help ensure the numeric 'hash' is usable even if it
1376 can't be guaranteed unique. The default mechanism is to use "&errno"
1377 as a pointer-based thread ID to distinguish between threads.
1379 Applications that want to provide their own thread IDs should now use
1380 CRYPTO_THREADID_set_callback() to register a callback that will call
1381 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1383 Note that ERR_remove_state() is now deprecated, because it is tied
1384 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1385 to free the current thread's error state should be replaced by
1386 ERR_remove_thread_state(NULL).
1388 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1389 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1390 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1391 application was previously providing a numeric thread callback that
1392 was inappropriate for distinguishing threads, then uniqueness might
1393 have been obtained with &errno that happened immediately in the
1394 intermediate development versions of OpenSSL; this is no longer the
1395 case, the numeric thread callback will now override the automatic use
1397 [Geoff Thorpe, with help from Bodo Moeller]
1399 *) Initial support for different CRL issuing certificates. This covers a
1400 simple case where the self issued certificates in the chain exist and
1401 the real CRL issuer is higher in the existing chain.
1403 This work was sponsored by Google.
1406 *) Removed effectively defunct crypto/store from the build.
1409 *) Revamp of STACK to provide stronger type-checking. Still to come:
1410 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1411 ASN1_STRING, CONF_VALUE.
1414 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1415 RAM on SSL connections. This option can save about 34k per idle SSL.
1418 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1419 STACK, TXT_DB, bsearch, qsort.
1422 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1423 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1424 support for data, signedData, compressedData, digestedData and
1425 encryptedData, envelopedData types included. Scripts to check against
1426 RFC4134 examples draft and interop and consistency checks of many
1427 content types and variants.
1430 *) Add options to enc utility to support use of zlib compression BIO.
1433 *) Extend mk1mf to support importing of options and assembly language
1434 files from Configure script, currently only included in VC-WIN32.
1435 The assembly language rules can now optionally generate the source
1436 files from the associated perl scripts.
1439 *) Implement remaining functionality needed to support GOST ciphersuites.
1440 Interop testing has been performed using CryptoPro implementations.
1441 [Victor B. Wagner <vitus@cryptocom.ru>]
1443 *) s390x assembler pack.
1446 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1450 *) Implement Opaque PRF Input TLS extension as specified in
1451 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1452 official specification yet and no extension type assignment by
1453 IANA exists, this extension (for now) will have to be explicitly
1454 enabled when building OpenSSL by providing the extension number
1455 to use. For example, specify an option
1457 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1459 to the "config" or "Configure" script to enable the extension,
1460 assuming extension number 0x9527 (which is a completely arbitrary
1461 and unofficial assignment based on the MD5 hash of the Internet
1462 Draft). Note that by doing so, you potentially lose
1463 interoperability with other TLS implementations since these might
1464 be using the same extension number for other purposes.
1466 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1467 opaque PRF input value to use in the handshake. This will create
1468 an interal copy of the length-'len' string at 'src', and will
1469 return non-zero for success.
1471 To get more control and flexibility, provide a callback function
1474 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1475 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1479 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1482 Callback function 'cb' will be called in handshakes, and is
1483 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1484 Argument 'arg' is for application purposes (the value as given to
1485 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1486 be provided to the callback function). The callback function
1487 has to return non-zero to report success: usually 1 to use opaque
1488 PRF input just if possible, or 2 to enforce use of the opaque PRF
1489 input. In the latter case, the library will abort the handshake
1490 if opaque PRF input is not successfully negotiated.
1492 Arguments 'peerinput' and 'len' given to the callback function
1493 will always be NULL and 0 in the case of a client. A server will
1494 see the client's opaque PRF input through these variables if
1495 available (NULL and 0 otherwise). Note that if the server
1496 provides an opaque PRF input, the length must be the same as the
1497 length of the client's opaque PRF input.
1499 Note that the callback function will only be called when creating
1500 a new session (session resumption can resume whatever was
1501 previously negotiated), and will not be called in SSL 2.0
1502 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1503 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1504 for applications that need to enforce opaque PRF input.
1508 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1511 [Victor B. Wagner <vitus@cryptocom.ru>]
1513 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1514 RFC4507bis. The encrypted ticket format is an encrypted encoded
1515 SSL_SESSION structure, that way new session features are automatically
1518 If a client application caches session in an SSL_SESSION structure
1519 support is transparent because tickets are now stored in the encoded
1522 The SSL_CTX structure automatically generates keys for ticket
1523 protection in servers so again support should be possible
1524 with no application modification.
1526 If a client or server wishes to disable RFC4507 support then the option
1527 SSL_OP_NO_TICKET can be set.
1529 Add a TLS extension debugging callback to allow the contents of any client
1530 or server extensions to be examined.
1532 This work was sponsored by Google.
1535 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1536 OpenSSL should now compile cleanly on gcc 4.2
1537 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1539 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1540 support including streaming MAC support: this is required for GOST
1541 ciphersuite support.
1542 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1544 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1545 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1546 to output in BER and PEM format.
1549 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1550 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1551 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1552 ENGINE support for HMAC keys which are unextractable. New -mac and
1553 -macopt options to dgst utility.
1556 *) New option -sigopt to dgst utility. Update dgst to use
1557 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1558 alternative signing paramaters such as X9.31 or PSS in the dgst
1562 *) Change ssl_cipher_apply_rule(), the internal function that does
1563 the work each time a ciphersuite string requests enabling
1564 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1565 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1566 the order of disabled ciphersuites such that those ciphersuites
1567 that most recently went from enabled to disabled not only stay
1568 in order with respect to each other, but also have higher priority
1569 than other disabled ciphersuites the next time ciphersuites are
1572 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1573 the same ciphersuites as with "HIGH" alone, but in a specific
1574 order where the PSK ciphersuites come first (since they are the
1575 most recently disabled ciphersuites when "HIGH" is parsed).
1577 Also, change ssl_create_cipher_list() (using this new
1578 funcionality) such that between otherwise identical
1579 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1583 *) Change ssl_create_cipher_list() so that it automatically
1584 arranges the ciphersuites in reasonable order before starting
1585 to process the rule string. Thus, the definition for "DEFAULT"
1586 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1587 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1588 This makes it much easier to arrive at a reasonable default order
1589 in applications for which anonymous ciphers are OK (meaning
1590 that you can't actually use DEFAULT).
1591 [Bodo Moeller; suggested by Victor Duchovni]
1593 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1594 processing) into multiple integers instead of setting
1595 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1596 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1597 (These masks as well as the individual bit definitions are hidden
1598 away into the non-exported interface ssl/ssl_locl.h, so this
1599 change to the definition of the SSL_CIPHER structure shouldn't
1600 affect applications.) This give us more bits for each of these
1601 categories, so there is no longer a need to coagulate AES128 and
1602 AES256 into a single algorithm bit, and to coagulate Camellia128
1603 and Camellia256 into a single algorithm bit, which has led to all
1606 Thus, among other things, the kludge introduced in 0.9.7m and
1607 0.9.8e for masking out AES256 independently of AES128 or masking
1608 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1610 With the change, we also introduce new ciphersuite aliases that
1611 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1615 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1616 Use the leftmost N bytes of the signature input if the input is
1617 larger than the prime q (with N being the size in bytes of q).
1620 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1621 it yet and it is largely untested.
1624 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1627 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1628 some compilers (gcc 4.2 and later) reject their use. Safestack is
1629 reimplemented. Update ASN1 to avoid use of legacy functions.
1632 *) Win32/64 targets are linked with Winsock2.
1635 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1636 to external functions. This can be used to increase CRL handling
1637 efficiency especially when CRLs are very large by (for example) storing
1638 the CRL revoked certificates in a database.
1641 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1642 new CRLs added to a directory can be used. New command line option
1643 -verify_return_error to s_client and s_server. This causes real errors
1644 to be returned by the verify callback instead of carrying on no matter
1645 what. This reflects the way a "real world" verify callback would behave.
1648 *) GOST engine, supporting several GOST algorithms and public key formats.
1649 Kindly donated by Cryptocom.
1652 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1653 partitioned by DP are handled but no indirect CRL or reason partitioning
1654 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1655 selected via a scoring technique which handles IDP and AKID in CRLs.
1658 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1659 will ultimately be used for all verify operations: this will remove the
1660 X509_STORE dependency on certificate verification and allow alternative
1661 lookup methods. X509_STORE based implementations of these two callbacks.
1664 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1665 Modify get_crl() to find a valid (unexpired) CRL if possible.
1668 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1669 this would be called X509_CRL_cmp() but that name is already used by
1670 a function that just compares CRL issuer names. Cache several CRL
1671 extensions in X509_CRL structure and cache CRLDP in X509.
1674 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1675 this maps equivalent X509_NAME structures into a consistent structure.
1676 Name comparison can then be performed rapidly using memcmp().
1679 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1683 *) Allow digests to supply their own micalg string for S/MIME type using
1684 the ctrl EVP_MD_CTRL_MICALG.
1687 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1688 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1689 ctrl. It can then customise the structure before and/or after signing
1693 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1694 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1695 to free up any added signature OIDs.
1698 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1699 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1700 digest and cipher tables. New options added to openssl utility:
1701 list-message-digest-algorithms and list-cipher-algorithms.
1704 *) Change the array representation of binary polynomials: the list
1705 of degrees of non-zero coefficients is now terminated with -1.
1706 Previously it was terminated with 0, which was also part of the
1707 value; thus, the array representation was not applicable to
1708 polynomials where t^0 has coefficient zero. This change makes
1709 the array representation useful in a more general context.
1712 *) Various modifications and fixes to SSL/TLS cipher string
1713 handling. For ECC, the code now distinguishes between fixed ECDH
1714 with RSA certificates on the one hand and with ECDSA certificates
1715 on the other hand, since these are separate ciphersuites. The
1716 unused code for Fortezza ciphersuites has been removed.
1718 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1719 (not "ECDHE"). For consistency with the code for DH
1720 certificates, use of ECDH certificates is now considered ECDH
1721 authentication, not RSA or ECDSA authentication (the latter is
1722 merely the CA's signing algorithm and not actively used in the
1725 The temporary ciphersuite alias "ECCdraft" is no longer
1726 available, and ECC ciphersuites are no longer excluded from "ALL"
1727 and "DEFAULT". The following aliases now exist for RFC 4492
1728 ciphersuites, most of these by analogy with the DH case:
1730 kECDHr - ECDH cert, signed with RSA
1731 kECDHe - ECDH cert, signed with ECDSA
1732 kECDH - ECDH cert (signed with either RSA or ECDSA)
1733 kEECDH - ephemeral ECDH
1734 ECDH - ECDH cert or ephemeral ECDH
1740 AECDH - anonymous ECDH
1741 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1745 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1746 Use correct micalg parameters depending on digest(s) in signed message.
1749 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1750 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1753 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1754 an engine to register a method. Add ENGINE lookups for methods and
1755 functional reference processing.
1758 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1759 EVP_{Sign,Verify}* which allow an application to customise the signature
1763 *) New -resign option to smime utility. This adds one or more signers
1764 to an existing PKCS#7 signedData structure. Also -md option to use an
1765 alternative message digest algorithm for signing.
1768 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1769 create PKCS7 structures containing multiple signers. Update smime
1770 application to support multiple signers.
1773 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1777 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1778 Reorganize PBE internals to lookup from a static table using NIDs,
1779 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1780 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1781 PRF which will be automatically used with PBES2.
1784 *) Replace the algorithm specific calls to generate keys in "req" with the
1788 *) Update PKCS#7 enveloped data routines to use new API. This is now
1789 supported by any public key method supporting the encrypt operation. A
1790 ctrl is added to allow the public key algorithm to examine or modify
1791 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1795 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1796 a default digest type to use. In most cases this will be SHA1 but some
1797 algorithms (such as GOST) need to specify an alternative digest. The
1798 return value indicates how strong the prefernce is 1 means optional and
1799 2 is mandatory (that is it is the only supported type). Modify
1800 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1801 use the default md. Update openssl utilities to use the default digest
1802 type for signing if it is not explicitly indicated.
1805 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1806 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1807 signing method from the key type. This effectively removes the link
1808 between digests and public key types.
1811 *) Add an OID cross reference table and utility functions. Its purpose is to
1812 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1813 rsaEncryption. This will allow some of the algorithm specific hackery
1814 needed to use the correct OID to be removed.
1817 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1818 structures for PKCS7_sign(). They are now set up by the relevant public
1822 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1825 *) Add support for key derivation (agreement) in the API, DH method and
1829 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1830 public and private key formats. As a side effect these add additional
1831 command line functionality not previously available: DSA signatures can be
1832 generated and verified using pkeyutl and DH key support and generation in
1837 [Oliver Tappe <zooey@hirschkaefer.de>]
1839 *) New make target "install_html_docs" installs HTML renditions of the
1841 [Oliver Tappe <zooey@hirschkaefer.de>]
1843 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1844 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1845 support key and parameter generation and add initial key generation
1846 functionality for RSA.
1849 *) Add functions for main EVP_PKEY_method operations. The undocumented
1850 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1851 EVP_PKEY_{encrypt,decrypt}_old.
1854 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1855 key API, doesn't do much yet.
1858 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1859 public key algorithms. New option to openssl utility:
1860 "list-public-key-algorithms" to print out info.
1863 *) Implement the Supported Elliptic Curves Extension for
1864 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1867 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1868 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1871 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1872 utilities such as rsa, dsa, dsaparam etc except they process any key
1876 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1877 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1878 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1882 *) Initial support for pluggable public key ASN1.
1883 De-spaghettify the public key ASN1 handling. Move public and private
1884 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1885 algorithm specific handling to a single module within the relevant
1886 algorithm directory. Add functions to allow (near) opaque processing
1887 of public and private key structures.
1890 *) Implement the Supported Point Formats Extension for
1891 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1894 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1895 for the psk identity [hint] and the psk callback functions to the
1896 SSL_SESSION, SSL and SSL_CTX structure.
1899 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1903 SSL_CTX_use_psk_identity_hint
1904 SSL_get_psk_identity_hint
1905 SSL_get_psk_identity
1906 SSL_use_psk_identity_hint
1908 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1910 *) Add RFC 3161 compliant time stamp request creation, response generation
1911 and response verification functionality.
1912 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1914 *) Add initial support for TLS extensions, specifically for the server_name
1915 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1916 have new members for a host name. The SSL data structure has an
1917 additional member SSL_CTX *initial_ctx so that new sessions can be
1918 stored in that context to allow for session resumption, even after the
1919 SSL has been switched to a new SSL_CTX in reaction to a client's
1920 server_name extension.
1922 New functions (subject to change):
1924 SSL_get_servername()
1925 SSL_get_servername_type()
1928 New CTRL codes and macros (subject to change):
1930 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1931 - SSL_CTX_set_tlsext_servername_callback()
1932 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1933 - SSL_CTX_set_tlsext_servername_arg()
1934 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1936 openssl s_client has a new '-servername ...' option.
1938 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1939 '-key2 ...', '-servername_fatal' (subject to change). This allows
1940 testing the HostName extension for a specific single host name ('-cert'
1941 and '-key' remain fallbacks for handshakes without HostName
1942 negotiation). If the unrecogninzed_name alert has to be sent, this by
1943 default is a warning; it becomes fatal with the '-servername_fatal'
1946 [Peter Sylvester, Remy Allais, Christophe Renou]
1948 *) Whirlpool hash implementation is added.
1951 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1952 bn(64,32). Because of instruction set limitations it doesn't have
1953 any negative impact on performance. This was done mostly in order
1954 to make it possible to share assembler modules, such as bn_mul_mont
1955 implementations, between 32- and 64-bit builds without hassle.
1958 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1959 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1963 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1964 dedicated Montgomery multiplication procedure, is introduced.
1965 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1966 "64-bit" performance on certain 32-bit targets.
1969 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1970 in SSL structures. New SSL ctrl to set maximum send fragment size.
1971 Save memory by seeting the I/O buffer sizes dynamically instead of
1972 using the maximum available value.
1975 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1976 in addition to the text details.
1979 *) Very, very preliminary EXPERIMENTAL support for printing of general
1980 ASN1 structures. This currently produces rather ugly output and doesn't
1981 handle several customised structures at all.
1984 *) Integrated support for PVK file format and some related formats such
1985 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1986 these in the 'rsa' and 'dsa' utilities.
1989 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1992 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1993 place for the (very old) "NETSCAPE" format certificates which are now
1994 handled using new ASN1 code equivalents.
1997 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1998 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1999 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
2002 *) Modify CRL distribution points extension code to print out previously
2003 unsupported fields. Enhance extension setting code to allow setting of
2007 *) Add print and set support for Issuing Distribution Point CRL extension.
2010 *) Change 'Configure' script to enable Camellia by default.
2013 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2015 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2017 This addresses the flaw in CBC record processing discovered by
2018 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2019 at: http://www.isg.rhul.ac.uk/tls/
2021 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2022 Security Group at Royal Holloway, University of London
2023 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2024 Emilia Käsper for the initial patch.
2026 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2028 *) Return an error when checking OCSP signatures when key is NULL.
2029 This fixes a DoS attack. (CVE-2013-0166)
2032 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2033 the right response is stapled. Also change SSL_get_certificate()
2034 so it returns the certificate actually sent.
2035 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2036 (This is a backport)
2037 [Rob Stradling <rob.stradling@comodo.com>]
2039 *) Fix possible deadlock when decoding public keys.
2042 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2044 *) Sanity check record length before skipping explicit IV in DTLS
2047 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2048 fuzzing as a service testing platform.
2052 *) Initialise tkeylen properly when encrypting CMS messages.
2053 Thanks to Solar Designer of Openwall for reporting this issue.
2056 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2058 *) The fix for CVE-2012-2110 did not take into account that the
2059 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2060 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2061 rejecting negative len parameter. (CVE-2012-2131)
2062 [Tomas Hoger <thoger@redhat.com>]
2064 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2066 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2067 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2068 in CRYPTO_realloc_clean.
2070 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2071 issue and to Adam Langley <agl@chromium.org> for fixing it.
2073 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2075 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2077 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2078 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2079 content decryption and always return the same error. Note: this attack
2080 needs on average 2^20 messages so it only affects automated senders. The
2081 old behaviour can be reenabled in the CMS code by setting the
2082 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2083 an MMA defence is not necessary.
2084 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2085 this issue. (CVE-2012-0884)
2088 *) Fix CVE-2011-4619: make sure we really are receiving a
2089 client hello before rejecting multiple SGC restarts. Thanks to
2090 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2093 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2095 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2096 Thanks to Antonio Martin, Enterprise Secure Access Research and
2097 Development, Cisco Systems, Inc. for discovering this bug and
2098 preparing a fix. (CVE-2012-0050)
2101 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2103 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2104 of the Vaudenay padding oracle attack on CBC mode encryption
2105 which enables an efficient plaintext recovery attack against
2106 the OpenSSL implementation of DTLS. Their attack exploits timing
2107 differences arising during decryption processing. A research
2108 paper describing this attack can be found at:
2109 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2110 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2111 Security Group at Royal Holloway, University of London
2112 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2113 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2114 for preparing the fix. (CVE-2011-4108)
2115 [Robin Seggelmann, Michael Tuexen]
2117 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2118 [Ben Laurie, Kasper <ekasper@google.com>]
2120 *) Clear bytes used for block padding of SSL 3.0 records.
2122 [Adam Langley (Google)]
2124 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2125 Kadianakis <desnacked@gmail.com> for discovering this issue and
2126 Adam Langley for preparing the fix. (CVE-2011-4619)
2127 [Adam Langley (Google)]
2129 *) Prevent malformed RFC3779 data triggering an assertion failure.
2130 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2131 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2132 [Rob Austein <sra@hactrn.net>]
2134 *) Fix ssl_ciph.c set-up race.
2135 [Adam Langley (Google)]
2137 *) Fix spurious failures in ecdsatest.c.
2138 [Emilia Käsper (Google)]
2140 *) Fix the BIO_f_buffer() implementation (which was mixing different
2141 interpretations of the '..._len' fields).
2142 [Adam Langley (Google)]
2144 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2145 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2146 threads won't reuse the same blinding coefficients.
2148 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2149 lock to call BN_BLINDING_invert_ex, and avoids one use of
2150 BN_BLINDING_update for each BN_BLINDING structure (previously,
2151 the last update always remained unused).
2152 [Emilia Käsper (Google)]
2154 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2155 for multi-threaded use of ECDH.
2156 [Adam Langley (Google)]
2158 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2161 *) Add protection against ECDSA timing attacks as mentioned in the paper
2162 by Billy Bob Brumley and Nicola Tuveri, see:
2164 http://eprint.iacr.org/2011/232.pdf
2166 [Billy Bob Brumley and Nicola Tuveri]
2168 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2170 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2171 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2173 *) Fix bug in string printing code: if *any* escaping is enabled we must
2174 escape the escape character (backslash) or the resulting string is
2178 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2180 *) Disable code workaround for ancient and obsolete Netscape browsers
2181 and servers: an attacker can use it in a ciphersuite downgrade attack.
2182 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2185 *) Fixed J-PAKE implementation error, originally discovered by
2186 Sebastien Martini, further info and confirmation from Stefan
2187 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2190 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2192 *) Fix extension code to avoid race conditions which can result in a buffer
2193 overrun vulnerability: resumed sessions must not be modified as they can
2194 be shared by multiple threads. CVE-2010-3864
2197 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2200 *) Don't reencode certificate when calculating signature: cache and use
2201 the original encoding instead. This makes signature verification of
2202 some broken encodings work correctly.
2205 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2206 is also one of the inputs.
2207 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2209 *) Don't repeatedly append PBE algorithms to table if they already exist.
2210 Sort table on each new add. This effectively makes the table read only
2211 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2215 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2217 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2220 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2221 access or freeing data twice (CVE-2010-0742)
2222 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2224 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2225 common in certificates and some applications which only call
2226 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2230 Reduce copying into .apps and .test in makevms.com
2231 Don't try to use blank CA certificate in CA.com
2232 Allow use of C files from original directories in maketests.com
2233 [Steven M. Schweda" <sms@antinode.info>]
2235 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2237 *) When rejecting SSL/TLS records due to an incorrect version number, never
2238 update s->server with a new major version number. As of
2239 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2240 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2241 the previous behavior could result in a read attempt at NULL when
2242 receiving specific incorrect SSL/TLS records once record payload
2243 protection is active. (CVE-2010-0740)
2244 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2246 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2247 could be crashed if the relevant tables were not present (e.g. chrooted).
2248 [Tomas Hoger <thoger@redhat.com>]
2250 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2252 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2253 [Martin Olsson, Neel Mehta]
2255 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2256 accommodate for stack sorting, always a write lock!).
2259 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2260 excessive delays in the RAND_poll(): over a minute. As a workaround
2261 include a time check in the inner Heap32Next loop too.
2264 *) The code that handled flushing of data in SSL/TLS originally used the
2265 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2266 the problem outlined in PR#1949. The fix suggested there however can
2267 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2268 of Apache). So instead simplify the code to flush unconditionally.
2269 This should be fine since flushing with no data to flush is a no op.
2272 *) Handle TLS versions 2.0 and later properly and correctly use the
2273 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2274 off ancient servers have a habit of sticking around for a while...
2277 *) Modify compression code so it frees up structures without using the
2278 ex_data callbacks. This works around a problem where some applications
2279 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2280 restarting) then use compression (e.g. SSL with compression) later.
2281 This results in significant per-connection memory leaks and
2282 has caused some security issues including CVE-2008-1678 and
2286 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2287 change when encrypting or decrypting.
2290 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2291 connect and renegotiate with servers which do not support RI.
2292 Until RI is more widely deployed this option is enabled by default.
2295 *) Add "missing" ssl ctrls to clear options and mode.
2298 *) If client attempts to renegotiate and doesn't support RI respond with
2299 a no_renegotiation alert as required by RFC5746. Some renegotiating
2300 TLS clients will continue a connection gracefully when they receive
2301 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2302 waiting for a server hello which it will never receive. Now we treat a
2303 received no_renegotiation alert as a fatal error. This is because
2304 applications requesting a renegotiation might well expect it to succeed
2305 and would have no code in place to handle the server denying it so the
2306 only safe thing to do is to terminate the connection.
2309 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2310 peer supports secure renegotiation and 0 otherwise. Print out peer
2311 renegotiation support in s_client/s_server.
2314 *) Replace the highly broken and deprecated SPKAC certification method with
2315 the updated NID creation version. This should correctly handle UTF8.
2318 *) Implement RFC5746. Re-enable renegotiation but require the extension
2319 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2320 turns out to be a bad idea. It has been replaced by
2321 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2322 SSL_CTX_set_options(). This is really not recommended unless you
2323 know what you are doing.
2324 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2326 *) Fixes to stateless session resumption handling. Use initial_ctx when
2327 issuing and attempting to decrypt tickets in case it has changed during
2328 servername handling. Use a non-zero length session ID when attempting
2329 stateless session resumption: this makes it possible to determine if
2330 a resumption has occurred immediately after receiving server hello
2331 (several places in OpenSSL subtly assume this) instead of later in
2335 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2336 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2337 fixes for a few places where the return code is not checked
2339 [Julia Lawall <julia@diku.dk>]
2341 *) Add --strict-warnings option to Configure script to include devteam
2342 warnings in other configurations.
2345 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2346 makes it possible to install openssl libraries in locations which
2347 have names other than "lib", for example "/usr/lib64" which some
2349 [Steve Henson, based on patch from Jeremy Utley]
2351 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2352 X690 8.9.12 and can produce some misleading textual output of OIDs.
2353 [Steve Henson, reported by Dan Kaminsky]
2355 *) Delete MD2 from algorithm tables. This follows the recommendation in
2356 several standards that it is not used in new applications due to
2357 several cryptographic weaknesses. For binary compatibility reasons
2358 the MD2 API is still compiled in by default.
2361 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2365 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2366 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2368 [Guenter <lists@gknw.net>]
2370 *) Fix the server certificate chain building code to use X509_verify_cert(),
2371 it used to have an ad-hoc builder which was unable to cope with anything
2372 other than a simple chain.
2373 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2375 *) Don't check self signed certificate signatures in X509_verify_cert()
2376 by default (a flag can override this): it just wastes time without
2377 adding any security. As a useful side effect self signed root CAs
2378 with non-FIPS digests are now usable in FIPS mode.
2381 *) In dtls1_process_out_of_seq_message() the check if the current message
2382 is already buffered was missing. For every new message was memory
2383 allocated, allowing an attacker to perform an denial of service attack
2384 with sending out of seq handshake messages until there is no memory
2385 left. Additionally every future messege was buffered, even if the
2386 sequence number made no sense and would be part of another handshake.
2387 So only messages with sequence numbers less than 10 in advance will be
2388 buffered. (CVE-2009-1378)
2389 [Robin Seggelmann, discovered by Daniel Mentz]
2391 *) Records are buffered if they arrive with a future epoch to be
2392 processed after finishing the corresponding handshake. There is
2393 currently no limitation to this buffer allowing an attacker to perform
2394 a DOS attack with sending records with future epochs until there is no
2395 memory left. This patch adds the pqueue_size() function to detemine
2396 the size of a buffer and limits the record buffer to 100 entries.
2398 [Robin Seggelmann, discovered by Daniel Mentz]
2400 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2401 parent structure is freed. (CVE-2009-1379)
2404 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2405 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2408 [Ilya O. <vrghost@gmail.com>]
2410 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2412 *) Disable renegotiation completely - this fixes a severe security
2413 problem (CVE-2009-3555) at the cost of breaking all
2414 renegotiation. Renegotiation can be re-enabled by setting
2415 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2416 run-time. This is really not recommended unless you know what
2420 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2422 *) Don't set val to NULL when freeing up structures, it is freed up by
2423 underlying code. If sizeof(void *) > sizeof(long) this can result in
2424 zeroing past the valid field. (CVE-2009-0789)
2425 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2427 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2428 checked correctly. This would allow some invalid signed attributes to
2429 appear to verify correctly. (CVE-2009-0591)
2430 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2432 *) Reject UniversalString and BMPString types with invalid lengths. This
2433 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2434 a legal length. (CVE-2009-0590)
2437 *) Set S/MIME signing as the default purpose rather than setting it
2438 unconditionally. This allows applications to override it at the store
2442 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2443 to handle some structures.
2446 *) Improve efficiency of mem_gets: don't search whole buffer each time
2448 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2450 *) New -hex option for openssl rand.
2453 *) Print out UTF8String and NumericString when parsing ASN1.
2456 *) Support NumericString type for name components.
2459 *) Allow CC in the environment to override the automatically chosen
2460 compiler. Note that nothing is done to ensure flags work with the
2464 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2466 *) Properly check EVP_VerifyFinal() and similar return values
2468 [Ben Laurie, Bodo Moeller, Google Security Team]
2470 *) Enable TLS extensions by default.
2473 *) Allow the CHIL engine to be loaded, whether the application is
2474 multithreaded or not. (This does not release the developer from the
2475 obligation to set up the dynamic locking callbacks.)
2476 [Sander Temme <sander@temme.net>]
2478 *) Use correct exit code if there is an error in dgst command.
2479 [Steve Henson; problem pointed out by Roland Dirlewanger]
2481 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2482 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2485 *) Add experimental JPAKE support, including demo authentication in
2486 s_client and s_server.
2489 *) Set the comparison function in v3_addr_canonize().
2490 [Rob Austein <sra@hactrn.net>]
2492 *) Add support for XMPP STARTTLS in s_client.
2493 [Philip Paeps <philip@freebsd.org>]
2495 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2496 to ensure that even with this option, only ciphersuites in the
2497 server's preference list will be accepted. (Note that the option
2498 applies only when resuming a session, so the earlier behavior was
2499 just about the algorithm choice for symmetric cryptography.)
2502 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2504 *) Fix NULL pointer dereference if a DTLS server received
2505 ChangeCipherSpec as first record (CVE-2009-1386).
2508 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2509 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2512 *) The fix in 0.9.8c that supposedly got rid of unsafe
2513 double-checked locking was incomplete for RSA blinding,
2514 addressing just one layer of what turns out to have been
2515 doubly unsafe triple-checked locking.
2517 So now fix this for real by retiring the MONT_HELPER macro
2518 in crypto/rsa/rsa_eay.c.
2520 [Bodo Moeller; problem pointed out by Marius Schilder]
2522 *) Various precautionary measures:
2524 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2526 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2527 (NB: This would require knowledge of the secret session ticket key
2528 to exploit, in which case you'd be SOL either way.)
2530 - Change bn_nist.c so that it will properly handle input BIGNUMs
2531 outside the expected range.
2533 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2536 [Neel Mehta, Bodo Moeller]
2538 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2539 the load fails. Useful for distros.
2540 [Ben Laurie and the FreeBSD team]
2542 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2545 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2548 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2550 This work was sponsored by Logica.
2553 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2554 keystores. Support for SSL/TLS client authentication too.
2555 Not compiled unless enable-capieng specified to Configure.
2557 This work was sponsored by Logica.
2560 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2561 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2562 attribute creation routines such as certifcate requests and PKCS#12
2566 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2568 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2569 handshake which could lead to a cilent crash as found using the
2570 Codenomicon TLS test suite (CVE-2008-1672)
2571 [Steve Henson, Mark Cox]
2573 *) Fix double free in TLS server name extensions which could lead to
2574 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2577 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2579 Clear the error queue to ensure that error entries left from
2580 older function calls do not interfere with the correct operation.
2581 [Lutz Jaenicke, Erik de Castro Lopo]
2583 *) Remove root CA certificates of commercial CAs:
2585 The OpenSSL project does not recommend any specific CA and does not
2586 have any policy with respect to including or excluding any CA.
2587 Therefore it does not make any sense to ship an arbitrary selection
2588 of root CA certificates with the OpenSSL software.
2591 *) RSA OAEP patches to fix two separate invalid memory reads.
2592 The first one involves inputs when 'lzero' is greater than
2593 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2594 before the beginning of from). The second one involves inputs where
2595 the 'db' section contains nothing but zeroes (there is a one-byte
2596 invalid read after the end of 'db').
2597 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2599 *) Partial backport from 0.9.9-dev:
2601 Introduce bn_mul_mont (dedicated Montgomery multiplication
2602 procedure) as a candidate for BIGNUM assembler implementation.
2603 While 0.9.9-dev uses assembler for various architectures, only
2604 x86_64 is available by default here in the 0.9.8 branch, and
2605 32-bit x86 is available through a compile-time setting.
2607 To try the 32-bit x86 assembler implementation, use Configure
2608 option "enable-montasm" (which exists only for this backport).
2610 As "enable-montasm" for 32-bit x86 disclaims code stability
2611 anyway, in this constellation we activate additional code
2612 backported from 0.9.9-dev for further performance improvements,
2613 namely BN_from_montgomery_word. (To enable this otherwise,
2614 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2616 [Andy Polyakov (backport partially by Bodo Moeller)]
2618 *) Add TLS session ticket callback. This allows an application to set
2619 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2620 values. This is useful for key rollover for example where several key
2621 sets may exist with different names.
2624 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2625 This was broken until now in 0.9.8 releases, such that the only way
2626 a registered ENGINE could be used (assuming it initialises
2627 successfully on the host) was to explicitly set it as the default
2628 for the relevant algorithms. This is in contradiction with 0.9.7
2629 behaviour and the documentation. With this fix, when an ENGINE is
2630 registered into a given algorithm's table of implementations, the
2631 'uptodate' flag is reset so that auto-discovery will be used next
2632 time a new context for that algorithm attempts to select an
2634 [Ian Lister (tweaked by Geoff Thorpe)]
2636 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2637 implemention in the following ways:
2639 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2642 Lack of BER streaming support means one pass streaming processing is
2643 only supported if data is detached: setting the streaming flag is
2644 ignored for embedded content.
2646 CMS support is disabled by default and must be explicitly enabled
2647 with the enable-cms configuration option.
2650 *) Update the GMP engine glue to do direct copies between BIGNUM and
2651 mpz_t when openssl and GMP use the same limb size. Otherwise the
2652 existing "conversion via a text string export" trick is still used.
2653 [Paul Sheer <paulsheer@gmail.com>]
2655 *) Zlib compression BIO. This is a filter BIO which compressed and
2656 uncompresses any data passed through it.
2659 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2660 RFC3394 compatible AES key wrapping.
2663 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2664 sets string data without copying. X509_ALGOR_set0() and
2665 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2666 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2667 from an X509_ATTRIBUTE structure optionally checking it occurs only
2668 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2672 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2673 to get the expected BN_FLG_CONSTTIME behavior.
2674 [Bodo Moeller (Google)]
2678 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2679 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2680 - added some more tests to do_tests.pl
2681 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2682 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2683 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2684 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2685 - various changes to netware.pl to enable gcc-cross builds on Win32
2687 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2688 - various changes to fix missing prototype warnings
2689 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2690 - added AES, WHIRLPOOL and CPUID assembler code to build files
2691 - added missing AES assembler make rules to mk1mf.pl
2692 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2693 [Guenter Knauf <eflash@gmx.net>]
2695 *) Implement certificate status request TLS extension defined in RFC3546.
2696 A client can set the appropriate parameters and receive the encoded
2697 OCSP response via a callback. A server can query the supplied parameters
2698 and set the encoded OCSP response in the callback. Add simplified examples
2699 to s_client and s_server.
2702 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2704 *) Fix various bugs:
2705 + Binary incompatibility of ssl_ctx_st structure
2706 + DTLS interoperation with non-compliant servers
2707 + Don't call get_session_cb() without proposed session
2708 + Fix ia64 assembler code
2709 [Andy Polyakov, Steve Henson]
2711 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2713 *) DTLS Handshake overhaul. There were longstanding issues with
2714 OpenSSL DTLS implementation, which were making it impossible for
2715 RFC 4347 compliant client to communicate with OpenSSL server.
2716 Unfortunately just fixing these incompatibilities would "cut off"
2717 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2718 server keeps tolerating non RFC compliant syntax. The opposite is
2719 not true, 0.9.8f client can not communicate with earlier server.
2720 This update even addresses CVE-2007-4995.
2723 *) Changes to avoid need for function casts in OpenSSL: some compilers
2724 (gcc 4.2 and later) reject their use.
2725 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2728 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2729 RFC4507bis. The encrypted ticket format is an encrypted encoded
2730 SSL_SESSION structure, that way new session features are automatically
2733 If a client application caches session in an SSL_SESSION structure
2734 support is transparent because tickets are now stored in the encoded
2737 The SSL_CTX structure automatically generates keys for ticket
2738 protection in servers so again support should be possible
2739 with no application modification.
2741 If a client or server wishes to disable RFC4507 support then the option
2742 SSL_OP_NO_TICKET can be set.
2744 Add a TLS extension debugging callback to allow the contents of any client
2745 or server extensions to be examined.
2747 This work was sponsored by Google.
2750 *) Add initial support for TLS extensions, specifically for the server_name
2751 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2752 have new members for a host name. The SSL data structure has an
2753 additional member SSL_CTX *initial_ctx so that new sessions can be
2754 stored in that context to allow for session resumption, even after the
2755 SSL has been switched to a new SSL_CTX in reaction to a client's
2756 server_name extension.
2758 New functions (subject to change):
2760 SSL_get_servername()
2761 SSL_get_servername_type()
2764 New CTRL codes and macros (subject to change):
2766 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2767 - SSL_CTX_set_tlsext_servername_callback()
2768 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2769 - SSL_CTX_set_tlsext_servername_arg()
2770 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2772 openssl s_client has a new '-servername ...' option.
2774 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2775 '-key2 ...', '-servername_fatal' (subject to change). This allows
2776 testing the HostName extension for a specific single host name ('-cert'
2777 and '-key' remain fallbacks for handshakes without HostName
2778 negotiation). If the unrecogninzed_name alert has to be sent, this by
2779 default is a warning; it becomes fatal with the '-servername_fatal'
2782 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2784 *) Add AES and SSE2 assembly language support to VC++ build.
2787 *) Mitigate attack on final subtraction in Montgomery reduction.
2790 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2791 (which previously caused an internal error).
2794 *) Squeeze another 10% out of IGE mode when in != out.
2797 *) AES IGE mode speedup.
2798 [Dean Gaudet (Google)]
2800 *) Add the Korean symmetric 128-bit cipher SEED (see
2801 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2802 add SEED ciphersuites from RFC 4162:
2804 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2805 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2806 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2807 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2809 To minimize changes between patchlevels in the OpenSSL 0.9.8
2810 series, SEED remains excluded from compilation unless OpenSSL
2811 is configured with 'enable-seed'.
2812 [KISA, Bodo Moeller]
2814 *) Mitigate branch prediction attacks, which can be practical if a
2815 single processor is shared, allowing a spy process to extract
2816 information. For detailed background information, see
2817 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2818 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2819 and Necessary Software Countermeasures"). The core of the change
2820 are new versions BN_div_no_branch() and
2821 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2822 respectively, which are slower, but avoid the security-relevant
2823 conditional branches. These are automatically called by BN_div()
2824 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2825 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2826 remove a conditional branch.
2828 BN_FLG_CONSTTIME is the new name for the previous
2829 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2830 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2831 in the exponent causes BN_mod_exp_mont() to use the alternative
2832 implementation in BN_mod_exp_mont_consttime().) The old name
2833 remains as a deprecated alias.
2835 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2836 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2837 constant-time implementations for more than just exponentiation.
2838 Here too the old name is kept as a deprecated alias.
2840 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2841 the BN_BLINDING structure gets an independent copy of the
2842 modulus. This means that the previous "BIGNUM *m" argument to
2843 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2844 essentially becomes "const BIGNUM *m", although we can't actually
2845 change this in the header file before 0.9.9. It allows
2846 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2847 enable BN_FLG_CONSTTIME.
2849 [Matthew D Wood (Intel Corp)]
2851 *) In the SSL/TLS server implementation, be strict about session ID
2852 context matching (which matters if an application uses a single
2853 external cache for different purposes). Previously,
2854 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2855 set. This did ensure strict client verification, but meant that,
2856 with applications using a single external cache for quite
2857 different requirements, clients could circumvent ciphersuite
2858 restrictions for a given session ID context by starting a session
2859 in a different context.
2862 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2863 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2864 authentication-only ciphersuites.
2867 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2868 not complete and could lead to a possible single byte overflow
2869 (CVE-2007-5135) [Ben Laurie]
2871 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2873 *) Since AES128 and AES256 (and similarly Camellia128 and
2874 Camellia256) share a single mask bit in the logic of
2875 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2876 kludge to work properly if AES128 is available and AES256 isn't
2877 (or if Camellia128 is available and Camellia256 isn't).
2880 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2881 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2882 When a point or a seed is encoded in a BIT STRING, we need to
2883 prevent the removal of trailing zero bits to get the proper DER
2884 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2885 of a NamedBitList, for which trailing 0 bits need to be removed.)
2888 *) Have SSL/TLS server implementation tolerate "mismatched" record
2889 protocol version while receiving ClientHello even if the
2890 ClientHello is fragmented. (The server can't insist on the
2891 particular protocol version it has chosen before the ServerHello
2892 message has informed the client about his choice.)
2895 *) Add RFC 3779 support.
2896 [Rob Austein for ARIN, Ben Laurie]
2898 *) Load error codes if they are not already present instead of using a
2899 static variable. This allows them to be cleanly unloaded and reloaded.
2900 Improve header file function name parsing.
2903 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2904 or CAPABILITY handshake as required by RFCs.
2907 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2909 *) Introduce limits to prevent malicious keys being able to
2910 cause a denial of service. (CVE-2006-2940)
2911 [Steve Henson, Bodo Moeller]
2913 *) Fix ASN.1 parsing of certain invalid structures that can result
2914 in a denial of service. (CVE-2006-2937) [Steve Henson]
2916 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2917 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2919 *) Fix SSL client code which could crash if connecting to a
2920 malicious SSLv2 server. (CVE-2006-4343)
2921 [Tavis Ormandy and Will Drewry, Google Security Team]
2923 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2924 match only those. Before that, "AES256-SHA" would be interpreted
2925 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2926 the same strength classification in 0.9.7h) as we currently only
2927 have a single AES bit in the ciphersuite description bitmap.
2928 That change, however, also applied to ciphersuite strings such as
2929 "RC4-MD5" that intentionally matched multiple ciphersuites --
2930 namely, SSL 2.0 ciphersuites in addition to the more common ones
2931 from SSL 3.0/TLS 1.0.
2933 So we change the selection algorithm again: Naming an explicit
2934 ciphersuite selects this one ciphersuite, and any other similar
2935 ciphersuite (same bitmap) from *other* protocol versions.
2936 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2937 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2939 Since SSL 2.0 does not have any ciphersuites for which the
2940 128/256 bit distinction would be relevant, this works for now.
2941 The proper fix will be to use different bits for AES128 and
2942 AES256, which would have avoided the problems from the beginning;
2943 however, bits are scarce, so we can only do this in a new release
2944 (not just a patchlevel) when we can change the SSL_CIPHER
2945 definition to split the single 'unsigned long mask' bitmap into
2946 multiple values to extend the available space.
2950 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2952 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2953 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2955 *) Add AES IGE and biIGE modes.
2958 *) Change the Unix randomness entropy gathering to use poll() when
2959 possible instead of select(), since the latter has some
2960 undesirable limitations.
2961 [Darryl Miles via Richard Levitte and Bodo Moeller]
2963 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2964 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2965 cannot be implicitly activated as part of, e.g., the "AES" alias.
2966 However, please upgrade to OpenSSL 0.9.9[-dev] for
2967 non-experimental use of the ECC ciphersuites to get TLS extension
2968 support, which is required for curve and point format negotiation
2969 to avoid potential handshake problems.
2972 *) Disable rogue ciphersuites:
2974 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2975 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2976 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2978 The latter two were purportedly from
2979 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2982 Also deactivate the remaining ciphersuites from
2983 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2984 unofficial, and the ID has long expired.
2987 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2988 dual-core machines) and other potential thread-safety issues.
2991 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2992 versions), which is now available for royalty-free use
2993 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2994 Also, add Camellia TLS ciphersuites from RFC 4132.
2996 To minimize changes between patchlevels in the OpenSSL 0.9.8
2997 series, Camellia remains excluded from compilation unless OpenSSL
2998 is configured with 'enable-camellia'.
3001 *) Disable the padding bug check when compression is in use. The padding
3002 bug check assumes the first packet is of even length, this is not
3003 necessarily true if compresssion is enabled and can result in false
3004 positives causing handshake failure. The actual bug test is ancient
3005 code so it is hoped that implementations will either have fixed it by
3006 now or any which still have the bug do not support compression.
3009 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3011 *) When applying a cipher rule check to see if string match is an explicit
3012 cipher suite and only match that one cipher suite if it is.
3015 *) Link in manifests for VC++ if needed.
3016 [Austin Ziegler <halostatue@gmail.com>]
3018 *) Update support for ECC-based TLS ciphersuites according to
3019 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3020 TLS extensions, which are supported starting with the 0.9.9
3021 branch, not in the OpenSSL 0.9.8 branch).
3024 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3025 opaque EVP_CIPHER_CTX handling.
3028 *) Fixes and enhancements to zlib compression code. We now only use
3029 "zlib1.dll" and use the default __cdecl calling convention on Win32
3030 to conform with the standards mentioned here:
3031 http://www.zlib.net/DLL_FAQ.txt
3032 Static zlib linking now works on Windows and the new --with-zlib-include
3033 --with-zlib-lib options to Configure can be used to supply the location
3034 of the headers and library. Gracefully handle case where zlib library
3038 *) Several fixes and enhancements to the OID generation code. The old code
3039 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3040 handle numbers larger than ULONG_MAX, truncated printing and had a
3041 non standard OBJ_obj2txt() behaviour.
3044 *) Add support for building of engines under engine/ as shared libraries
3045 under VC++ build system.
3048 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3049 Hopefully, we will not see any false combination of paths any more.
3052 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3054 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3055 (part of SSL_OP_ALL). This option used to disable the
3056 countermeasure against man-in-the-middle protocol-version
3057 rollback in the SSL 2.0 server implementation, which is a bad
3058 idea. (CVE-2005-2969)
3060 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3061 for Information Security, National Institute of Advanced Industrial
3062 Science and Technology [AIST], Japan)]
3064 *) Add two function to clear and return the verify parameter flags.
3067 *) Keep cipherlists sorted in the source instead of sorting them at
3068 runtime, thus removing the need for a lock.
3071 *) Avoid some small subgroup attacks in Diffie-Hellman.
3072 [Nick Mathewson and Ben Laurie]
3074 *) Add functions for well-known primes.
3077 *) Extended Windows CE support.
3078 [Satoshi Nakamura and Andy Polyakov]
3080 *) Initialize SSL_METHOD structures at compile time instead of during
3081 runtime, thus removing the need for a lock.
3084 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3085 attempting to decrypt each encrypted key in turn. Add support to
3089 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3091 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3094 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3097 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3098 key into the same file any more.
3101 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3104 *) Add -utf8 command line and config file option to 'ca'.
3105 [Stefan <stf@udoma.org]
3107 *) Removed the macro des_crypt(), as it seems to conflict with some
3108 libraries. Use DES_crypt().
3111 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3112 involves renaming the source and generated shared-libs for
3113 both. The engines will accept the corrected or legacy ids
3114 ('ncipher' and '4758_cca' respectively) when binding. NB,
3115 this only applies when building 'shared'.
3116 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3118 *) Add attribute functions to EVP_PKEY structure. Modify
3119 PKCS12_create() to recognize a CSP name attribute and
3120 use it. Make -CSP option work again in pkcs12 utility.
3123 *) Add new functionality to the bn blinding code:
3124 - automatic re-creation of the BN_BLINDING parameters after
3125 a fixed number of uses (currently 32)
3126 - add new function for parameter creation
3127 - introduce flags to control the update behaviour of the
3128 BN_BLINDING parameters
3129 - hide BN_BLINDING structure
3130 Add a second BN_BLINDING slot to the RSA structure to improve
3131 performance when a single RSA object is shared among several
3135 *) Add support for DTLS.
3136 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3138 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3139 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3142 *) Remove buggy and incompletet DH cert support from
3143 ssl/ssl_rsa.c and ssl/s3_both.c
3146 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3147 the apps/openssl applications.
3150 *) Compile clean with "-Wall -Wmissing-prototypes
3151 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3152 DEBUG_SAFESTACK must also be set.
3155 *) Change ./Configure so that certain algorithms can be disabled by default.
3156 The new counterpiece to "no-xxx" is "enable-xxx".
3158 The patented RC5 and MDC2 algorithms will now be disabled unless
3159 "enable-rc5" and "enable-mdc2", respectively, are specified.
3161 (IDEA remains enabled despite being patented. This is because IDEA
3162 is frequently required for interoperability, and there is no license
3163 fee for non-commercial use. As before, "no-idea" can be used to
3164 avoid this algorithm.)
3168 *) Add processing of proxy certificates (see RFC 3820). This work was
3169 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3170 EGEE (Enabling Grids for E-science in Europe).
3173 *) RC4 performance overhaul on modern architectures/implementations, such
3174 as Intel P4, IA-64 and AMD64.
3177 *) New utility extract-section.pl. This can be used specify an alternative
3178 section number in a pod file instead of having to treat each file as
3179 a separate case in Makefile. This can be done by adding two lines to the
3182 =for comment openssl_section:XXX
3184 The blank line is mandatory.
3188 *) New arguments -certform, -keyform and -pass for s_client and s_server
3189 to allow alternative format key and certificate files and passphrase
3193 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3194 update associated structures and add various utility functions.
3196 Add new policy related verify parameters, include policy checking in
3197 standard verify code. Enhance 'smime' application with extra parameters
3198 to support policy checking and print out.
3201 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3202 Nehemiah processors. These extensions support AES encryption in hardware
3203 as well as RNG (though RNG support is currently disabled).
3204 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3206 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3209 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3210 [Andy Polyakov and a number of other people]
3212 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3213 implementation contributed by IBM.
3214 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3216 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3217 exponent rather than 'unsigned long'. There is a corresponding change to
3218 the new 'rsa_keygen' element of the RSA_METHOD structure.
3219 [Jelte Jansen, Geoff Thorpe]
3221 *) Functionality for creating the initial serial number file is now
3222 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3224 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3225 number file to 1, which is bound to cause problems. To avoid
3226 the problems while respecting compatibility between different 0.9.7
3227 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3228 CA.pl for serial number initialization. With the new release 0.9.8,
3229 we can fix the problem directly in the 'ca' utility.)
3232 *) Reduced header interdepencies by declaring more opaque objects in
3233 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3234 give fewer recursive includes, which could break lazy source code - so
3235 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3236 developers should define this symbol when building and using openssl to
3237 ensure they track the recommended behaviour, interfaces, [etc], but
3238 backwards-compatible behaviour prevails when this isn't defined.
3241 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3244 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3245 This will generate a random key of the appropriate length based on the
3246 cipher context. The EVP_CIPHER can provide its own random key generation
3247 routine to support keys of a specific form. This is used in the des and
3248 3des routines to generate a key of the correct parity. Update S/MIME
3249 code to use new functions and hence generate correct parity DES keys.
3250 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3251 valid (weak or incorrect parity).
3254 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3255 as looking them up. This is useful when the verified structure may contain
3256 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3257 present unless the new PKCS7_NO_CRL flag is asserted.
3260 *) Extend ASN1 oid configuration module. It now additionally accepts the
3263 shortName = some long name, 1.2.3.4
3266 *) Reimplemented the BN_CTX implementation. There is now no more static
3267 limitation on the number of variables it can handle nor the depth of the
3268 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3269 information can now expand as required, and rather than having a single
3270 static array of bignums, BN_CTX now uses a linked-list of such arrays
3271 allowing it to expand on demand whilst maintaining the usefulness of
3272 BN_CTX's "bundling".
3275 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3276 to allow all RSA operations to function using a single BN_CTX.
3279 *) Preliminary support for certificate policy evaluation and checking. This
3280 is initially intended to pass the tests outlined in "Conformance Testing
3281 of Relying Party Client Certificate Path Processing Logic" v1.07.
3284 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3285 remained unused and not that useful. A variety of other little bignum
3286 tweaks and fixes have also been made continuing on from the audit (see
3290 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3291 associated ASN1, EVP and SSL functions and old ASN1 macros.
3294 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3295 and this should never fail. So the return value from the use of
3296 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3297 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3300 *) BN_CTX_get() should return zero-valued bignums, providing the same
3301 initialised value as BN_new().
3302 [Geoff Thorpe, suggested by Ulf Möller]
3304 *) Support for inhibitAnyPolicy certificate extension.
3307 *) An audit of the BIGNUM code is underway, for which debugging code is
3308 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3309 is considered valid when processing BIGNUMs, and causes execution to
3310 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3311 further steps are taken to deliberately pollute unused data in BIGNUM
3312 structures to try and expose faulty code further on. For now, openssl will
3313 (in its default mode of operation) continue to tolerate the inconsistent
3314 forms that it has tolerated in the past, but authors and packagers should
3315 consider trying openssl and their own applications when compiled with
3316 these debugging symbols defined. It will help highlight potential bugs in
3317 their own code, and will improve the test coverage for OpenSSL itself. At
3318 some point, these tighter rules will become openssl's default to improve
3319 maintainability, though the assert()s and other overheads will remain only
3320 in debugging configurations. See bn.h for more details.
3321 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3323 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3324 that can only be obtained through BN_CTX_new() (which implicitly
3325 initialises it). The presence of this function only made it possible
3326 to overwrite an existing structure (and cause memory leaks).
3329 *) Because of the callback-based approach for implementing LHASH as a
3330 template type, lh_insert() adds opaque objects to hash-tables and
3331 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3332 to clean up those corresponding objects before destroying the hash table
3333 (and losing the object pointers). So some over-zealous constifications in
3334 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3335 objects as "const" and the lh_doall[_arg] callback wrappers are not
3336 prototyped to have "const" restrictions on the object pointers they are
3337 given (and so aren't required to cast them away any more).
3340 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3341 (speed) prefers to use its own implementation. The two implementations
3342 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3343 its object type properly exposed (MS_TM) instead of casting to/from "char
3344 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3345 aren't necessarily the greatest nomenclatures - but this is what was used
3346 internally to the implementation so I've used that for now.
3349 *) Ensure that deprecated functions do not get compiled when
3350 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3351 the self-tests were still using deprecated key-generation functions so
3352 these have been updated also.
3355 *) Reorganise PKCS#7 code to separate the digest location functionality
3356 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3357 New function PKCS7_set_digest() to set the digest type for PKCS#7
3358 digestedData type. Add additional code to correctly generate the
3359 digestedData type and add support for this type in PKCS7 initialization
3363 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3364 structure of type "other".
3367 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3368 sure the loop does correctly stop and breaking ("division by zero")
3369 modulus operations are not performed. The (pre-generated) prime
3370 table crypto/bn/bn_prime.h was already correct, but it could not be
3371 re-generated on some platforms because of the "division by zero"
3372 situation in the script.
3373 [Ralf S. Engelschall]
3375 *) Update support for ECC-based TLS ciphersuites according to
3376 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3377 SHA-1 now is only used for "small" curves (where the
3378 representation of a field element takes up to 24 bytes); for
3379 larger curves, the field element resulting from ECDH is directly
3380 used as premaster secret.
3381 [Douglas Stebila (Sun Microsystems Laboratories)]
3383 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3384 curve secp160r1 to the tests.
3385 [Douglas Stebila (Sun Microsystems Laboratories)]
3387 *) Add the possibility to load symbols globally with DSO.
3388 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3390 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3391 control of the error stack.
3394 *) Add support for STORE in ENGINE.
3397 *) Add the STORE type. The intention is to provide a common interface
3398 to certificate and key stores, be they simple file-based stores, or
3399 HSM-type store, or LDAP stores, or...
3400 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3403 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3404 pass a list of arguments to any function as well as provide a way
3405 for a function to pass data back to the caller.
3408 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3409 works like BUF_strdup() but can be used to duplicate a portion of
3410 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3414 *) Add the function sk_find_ex() which works like sk_find(), but will
3415 return an index to an element even if an exact match couldn't be
3416 found. The index is guaranteed to point at the element where the
3417 searched-for key would be inserted to preserve sorting order.
3420 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3421 takes an extra flags argument for optional functionality. Currently,
3422 the following flags are defined:
3424 OBJ_BSEARCH_VALUE_ON_NOMATCH
3425 This one gets OBJ_bsearch_ex() to return a pointer to the first
3426 element where the comparing function returns a negative or zero
3429 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3430 This one gets OBJ_bsearch_ex() to return a pointer to the first
3431 element where the comparing function returns zero. This is useful
3432 if there are more than one element where the comparing function
3436 *) Make it possible to create self-signed certificates with 'openssl ca'
3437 in such a way that the self-signed certificate becomes part of the
3438 CA database and uses the same mechanisms for serial number generation
3439 as all other certificate signing. The new flag '-selfsign' enables
3440 this functionality. Adapt CA.sh and CA.pl.in.
3443 *) Add functionality to check the public key of a certificate request
3444 against a given private. This is useful to check that a certificate
3445 request can be signed by that key (self-signing).
3448 *) Make it possible to have multiple active certificates with the same
3449 subject in the CA index file. This is done only if the keyword
3450 'unique_subject' is set to 'no' in the main CA section (default
3451 if 'CA_default') of the configuration file. The value is saved
3452 with the database itself in a separate index attribute file,
3453 named like the index file with '.attr' appended to the name.
3456 *) Generate muti valued AVAs using '+' notation in config files for
3460 *) Support for nameConstraints certificate extension.
3463 *) Support for policyConstraints certificate extension.
3466 *) Support for policyMappings certificate extension.
3469 *) Make sure the default DSA_METHOD implementation only uses its
3470 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3471 and change its own handlers to be NULL so as to remove unnecessary
3472 indirection. This lets alternative implementations fallback to the
3473 default implementation more easily.
3476 *) Support for directoryName in GeneralName related extensions
3480 *) Make it possible to link applications using Makefile.shared.
3481 Make that possible even when linking against static libraries!
3484 *) Support for single pass processing for S/MIME signing. This now
3485 means that S/MIME signing can be done from a pipe, in addition
3486 cleartext signing (multipart/signed type) is effectively streaming
3487 and the signed data does not need to be all held in memory.
3489 This is done with a new flag PKCS7_STREAM. When this flag is set
3490 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3491 is done after the data is output (and digests calculated) in
3492 SMIME_write_PKCS7().
3495 *) Add full support for -rpath/-R, both in shared libraries and
3496 applications, at least on the platforms where it's known how
3500 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3501 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3502 will now compute a table of multiples of the generator that
3503 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3504 faster (notably in the case of a single point multiplication,
3505 scalar * generator).
3506 [Nils Larsch, Bodo Moeller]
3508 *) IPv6 support for certificate extensions. The various extensions
3509 which use the IP:a.b.c.d can now take IPv6 addresses using the
3510 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3514 *) Added an ENGINE that implements RSA by performing private key
3515 exponentiations with the GMP library. The conversions to and from
3516 GMP's mpz_t format aren't optimised nor are any montgomery forms
3517 cached, and on x86 it appears OpenSSL's own performance has caught up.
3518 However there are likely to be other architectures where GMP could
3519 provide a boost. This ENGINE is not built in by default, but it can be
3520 specified at Configure time and should be accompanied by the necessary
3521 linker additions, eg;
3522 ./config -DOPENSSL_USE_GMP -lgmp
3525 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3526 testing availability of engines with "-t" - the old behaviour is
3527 produced by increasing the feature's verbosity with "-tt".
3530 *) ECDSA routines: under certain error conditions uninitialized BN objects
3531 could be freed. Solution: make sure initialization is performed early
3532 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3536 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3537 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3538 software implementations. For DSA and DH, parameter generation can
3539 also be overriden by providing the appropriate method callbacks.
3542 *) Change the "progress" mechanism used in key-generation and
3543 primality testing to functions that take a new BN_GENCB pointer in
3544 place of callback/argument pairs. The new API functions have "_ex"
3545 postfixes and the older functions are reimplemented as wrappers for
3546 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3547 declarations of the old functions to help (graceful) attempts to
3548 migrate to the new functions. Also, the new key-generation API
3549 functions operate on a caller-supplied key-structure and return
3550 success/failure rather than returning a key or NULL - this is to
3551 help make "keygen" another member function of RSA_METHOD etc.
3553 Example for using the new callback interface:
3555 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3559 BN_GENCB_set(&my_cb, my_callback, my_arg);
3561 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3562 /* For the meaning of a, b in calls to my_callback(), see the
3563 * documentation of the function that calls the callback.
3564 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3565 * my_callback should return 1 if it wants BN_is_prime_ex()
3566 * to continue, or 0 to stop.
3571 *) Change the ZLIB compression method to be stateful, and make it
3572 available to TLS with the number defined in
3573 draft-ietf-tls-compression-04.txt.
3576 *) Add the ASN.1 structures and functions for CertificatePair, which
3577 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3579 CertificatePair ::= SEQUENCE {
3580 forward [0] Certificate OPTIONAL,
3581 reverse [1] Certificate OPTIONAL,
3582 -- at least one of the pair shall be present -- }
3584 Also implement the PEM functions to read and write certificate
3585 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3587 This needed to be defined, mostly for the sake of the LDAP
3588 attribute crossCertificatePair, but may prove useful elsewhere as
3592 *) Make it possible to inhibit symlinking of shared libraries in
3593 Makefile.shared, for Cygwin's sake.
3596 *) Extend the BIGNUM API by creating a function
3597 void BN_set_negative(BIGNUM *a, int neg);
3598 and a macro that behave like
3599 int BN_is_negative(const BIGNUM *a);
3601 to avoid the need to access 'a->neg' directly in applications.
3604 *) Implement fast modular reduction for pseudo-Mersenne primes
3605 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3606 EC_GROUP_new_curve_GFp() will now automatically use this
3608 [Nils Larsch <nla@trustcenter.de>]
3610 *) Add new lock type (CRYPTO_LOCK_BN).
3613 *) Change the ENGINE framework to automatically load engines
3614 dynamically from specific directories unless they could be
3615 found to already be built in or loaded. Move all the
3616 current engines except for the cryptodev one to a new
3618 The engines in engines/ are built as shared libraries if
3619 the "shared" options was given to ./Configure or ./config.
3620 Otherwise, they are inserted in libcrypto.a.
3621 /usr/local/ssl/engines is the default directory for dynamic
3622 engines, but that can be overriden at configure time through
3623 the usual use of --prefix and/or --openssldir, and at run
3624 time with the environment variable OPENSSL_ENGINES.
3625 [Geoff Thorpe and Richard Levitte]
3627 *) Add Makefile.shared, a helper makefile to build shared
3628 libraries. Addapt Makefile.org.
3631 *) Add version info to Win32 DLLs.
3632 [Peter 'Luna' Runestig" <peter@runestig.com>]
3634 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3635 can be added using this API to created arbitrary PKCS#12
3636 files while avoiding the low level API.
3638 New options to PKCS12_create(), key or cert can be NULL and
3639 will then be omitted from the output file. The encryption
3640 algorithm NIDs can be set to -1 for no encryption, the mac
3641 iteration count can be set to 0 to omit the mac.
3643 Enhance pkcs12 utility by making the -nokeys and -nocerts
3644 options work when creating a PKCS#12 file. New option -nomac
3645 to omit the mac, NONE can be set for an encryption algorithm.
3646 New code is modified to use the enhanced PKCS12_create()
3647 instead of the low level API.
3650 *) Extend ASN1 encoder to support indefinite length constructed
3651 encoding. This can output sequences tags and octet strings in
3652 this form. Modify pk7_asn1.c to support indefinite length
3653 encoding. This is experimental and needs additional code to
3654 be useful, such as an ASN1 bio and some enhanced streaming
3657 Extend template encode functionality so that tagging is passed
3658 down to the template encoder.
3661 *) Let 'openssl req' fail if an argument to '-newkey' is not
3662 recognized instead of using RSA as a default.
3665 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3666 As these are not official, they are not included in "ALL";
3667 the "ECCdraft" ciphersuite group alias can be used to select them.
3668 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3670 *) Add ECDH engine support.
3671 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3673 *) Add ECDH in new directory crypto/ecdh/.
3674 [Douglas Stebila (Sun Microsystems Laboratories)]
3676 *) Let BN_rand_range() abort with an error after 100 iterations
3677 without success (which indicates a broken PRNG).
3680 *) Change BN_mod_sqrt() so that it verifies that the input value
3681 is really the square of the return value. (Previously,
3682 BN_mod_sqrt would show GIGO behaviour.)
3685 *) Add named elliptic curves over binary fields from X9.62, SECG,
3686 and WAP/WTLS; add OIDs that were still missing.
3688 [Sheueling Chang Shantz and Douglas Stebila
3689 (Sun Microsystems Laboratories)]
3691 *) Extend the EC library for elliptic curves over binary fields
3692 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3695 EC_GF2m_simple_method
3699 EC_GROUP_new_curve_GF2m
3700 EC_GROUP_set_curve_GF2m
3701 EC_GROUP_get_curve_GF2m
3702 EC_POINT_set_affine_coordinates_GF2m
3703 EC_POINT_get_affine_coordinates_GF2m
3704 EC_POINT_set_compressed_coordinates_GF2m
3706 Point compression for binary fields is disabled by default for
3707 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3710 As binary polynomials are represented as BIGNUMs, various members
3711 of the EC_GROUP and EC_POINT data structures can be shared
3712 between the implementations for prime fields and binary fields;
3713 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3714 are essentially identical to their ..._GFp counterparts.
3715 (For simplicity, the '..._GFp' prefix has been dropped from
3716 various internal method names.)
3718 An internal 'field_div' method (similar to 'field_mul' and
3719 'field_sqr') has been added; this is used only for binary fields.
3721 [Sheueling Chang Shantz and Douglas Stebila
3722 (Sun Microsystems Laboratories)]
3724 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3725 through methods ('mul', 'precompute_mult').
3727 The generic implementations (now internally called 'ec_wNAF_mul'
3728 and 'ec_wNAF_precomputed_mult') remain the default if these
3729 methods are undefined.
3731 [Sheueling Chang Shantz and Douglas Stebila
3732 (Sun Microsystems Laboratories)]
3734 *) New function EC_GROUP_get_degree, which is defined through
3735 EC_METHOD. For curves over prime fields, this returns the bit
3736 length of the modulus.
3738 [Sheueling Chang Shantz and Douglas Stebila
3739 (Sun Microsystems Laboratories)]
3741 *) New functions EC_GROUP_dup, EC_POINT_dup.
3742 (These simply call ..._new and ..._copy).
3744 [Sheueling Chang Shantz and Douglas Stebila
3745 (Sun Microsystems Laboratories)]
3747 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3748 Polynomials are represented as BIGNUMs (where the sign bit is not
3749 used) in the following functions [macros]:
3752 BN_GF2m_sub [= BN_GF2m_add]
3753 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3754 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3755 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3757 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3758 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3759 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3760 BN_GF2m_cmp [= BN_ucmp]
3762 (Note that only the 'mod' functions are actually for fields GF(2^m).
3763 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3765 For some functions, an the irreducible polynomial defining a
3766 field can be given as an 'unsigned int[]' with strictly
3767 decreasing elements giving the indices of those bits that are set;
3768 i.e., p[] represents the polynomial
3769 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3771 p[0] > p[1] > ... > p[k] = 0.
3772 This applies to the following functions:
3777 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3778 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3780 BN_GF2m_mod_sqrt_arr
3781 BN_GF2m_mod_solve_quad_arr
3785 Conversion can be performed by the following functions:
3790 bntest.c has additional tests for binary polynomial arithmetic.
3792 Two implementations for BN_GF2m_mod_div() are available.
3793 The default algorithm simply uses BN_GF2m_mod_inv() and
3794 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3795 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3796 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3798 [Sheueling Chang Shantz and Douglas Stebila
3799 (Sun Microsystems Laboratories)]
3801 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3802 functionality is disabled at compile-time.
3803 [Douglas Stebila <douglas.stebila@sun.com>]
3805 *) Change default behaviour of 'openssl asn1parse' so that more
3806 information is visible when viewing, e.g., a certificate:
3808 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3809 mode the content of non-printable OCTET STRINGs is output in a
3810 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3811 avoid the appearance of a printable string.
3812 [Nils Larsch <nla@trustcenter.de>]
3814 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3816 EC_GROUP_set_asn1_flag()
3817 EC_GROUP_get_asn1_flag()
3818 EC_GROUP_set_point_conversion_form()
3819 EC_GROUP_get_point_conversion_form()
3820 These control ASN1 encoding details:
3821 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3822 has been set to OPENSSL_EC_NAMED_CURVE.
3823 - Points are encoded in uncompressed form by default; options for
3824 asn1_for are as for point2oct, namely
3825 POINT_CONVERSION_COMPRESSED
3826 POINT_CONVERSION_UNCOMPRESSED
3827 POINT_CONVERSION_HYBRID
3829 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3832 EC_GROUP_get0_seed()
3833 EC_GROUP_get_seed_len()
3834 This is used only for ASN1 purposes (so far).
3835 [Nils Larsch <nla@trustcenter.de>]
3837 *) Add 'field_type' member to EC_METHOD, which holds the NID
3838 of the appropriate field type OID. The new function
3839 EC_METHOD_get_field_type() returns this value.
3840 [Nils Larsch <nla@trustcenter.de>]
3845 EC_POINT_point2hex()
3846 EC_POINT_hex2point()
3847 providing useful interfaces to EC_POINT_point2oct() and
3848 EC_POINT_oct2point().
3849 [Nils Larsch <nla@trustcenter.de>]
3851 *) Change internals of the EC library so that the functions
3852 EC_GROUP_set_generator()
3853 EC_GROUP_get_generator()
3854 EC_GROUP_get_order()
3855 EC_GROUP_get_cofactor()
3856 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3857 to methods, which would lead to unnecessary code duplication when
3858 adding different types of curves.
3859 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3861 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3862 arithmetic, and such that modified wNAFs are generated
3863 (which avoid length expansion in many cases).
3866 *) Add a function EC_GROUP_check_discriminant() (defined via
3867 EC_METHOD) that verifies that the curve discriminant is non-zero.
3869 Add a function EC_GROUP_check() that makes some sanity tests
3870 on a EC_GROUP, its generator and order. This includes
3871 EC_GROUP_check_discriminant().
3872 [Nils Larsch <nla@trustcenter.de>]
3874 *) Add ECDSA in new directory crypto/ecdsa/.
3876 Add applications 'openssl ecparam' and 'openssl ecdsa'
3877 (these are based on 'openssl dsaparam' and 'openssl dsa').
3879 ECDSA support is also included in various other files across the
3880 library. Most notably,
3881 - 'openssl req' now has a '-newkey ecdsa:file' option;
3882 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3883 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3884 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3885 them suitable for ECDSA where domain parameters must be
3886 extracted before the specific public key;
3887 - ECDSA engine support has been added.
3888 [Nils Larsch <nla@trustcenter.de>]
3890 *) Include some named elliptic curves, and add OIDs from X9.62,
3891 SECG, and WAP/WTLS. Each curve can be obtained from the new
3893 EC_GROUP_new_by_curve_name(),
3894 and the list of available named curves can be obtained with
3895 EC_get_builtin_curves().
3896 Also add a 'curve_name' member to EC_GROUP objects, which can be
3898 EC_GROUP_set_curve_name()
3899 EC_GROUP_get_curve_name()
3900 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3902 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3903 was actually never needed) and in BN_mul(). The removal in BN_mul()
3904 required a small change in bn_mul_part_recursive() and the addition
3905 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3906 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3907 bn_sub_words() and bn_add_words() except they take arrays with
3911 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3913 *) Cleanse PEM buffers before freeing them since they may contain
3915 [Benjamin Bennett <ben@psc.edu>]
3917 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3918 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3919 authentication-only ciphersuites.
3922 *) Since AES128 and AES256 share a single mask bit in the logic of
3923 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3924 kludge to work properly if AES128 is available and AES256 isn't.
3927 *) Expand security boundary to match 1.1.1 module.
3930 *) Remove redundant features: hash file source, editing of test vectors
3931 modify fipsld to use external fips_premain.c signature.
3934 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3935 run algorithm test programs.
3938 *) Make algorithm test programs more tolerant of whitespace.
3941 *) Have SSL/TLS server implementation tolerate "mismatched" record
3942 protocol version while receiving ClientHello even if the
3943 ClientHello is fragmented. (The server can't insist on the
3944 particular protocol version it has chosen before the ServerHello
3945 message has informed the client about his choice.)
3948 *) Load error codes if they are not already present instead of using a
3949 static variable. This allows them to be cleanly unloaded and reloaded.
3952 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3954 *) Introduce limits to prevent malicious keys being able to
3955 cause a denial of service. (CVE-2006-2940)
3956 [Steve Henson, Bodo Moeller]
3958 *) Fix ASN.1 parsing of certain invalid structures that can result
3959 in a denial of service. (CVE-2006-2937) [Steve Henson]
3961 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3962 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3964 *) Fix SSL client code which could crash if connecting to a
3965 malicious SSLv2 server. (CVE-2006-4343)
3966 [Tavis Ormandy and Will Drewry, Google Security Team]
3968 *) Change ciphersuite string processing so that an explicit
3969 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3970 will no longer include "AES128-SHA"), and any other similar
3971 ciphersuite (same bitmap) from *other* protocol versions (so that
3972 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3973 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3974 changes from 0.9.8b and 0.9.8d.
3977 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3979 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3980 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3982 *) Change the Unix randomness entropy gathering to use poll() when
3983 possible instead of select(), since the latter has some
3984 undesirable limitations.
3985 [Darryl Miles via Richard Levitte and Bodo Moeller]
3987 *) Disable rogue ciphersuites:
3989 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3990 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3991 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3993 The latter two were purportedly from
3994 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3997 Also deactive the remaining ciphersuites from
3998 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3999 unofficial, and the ID has long expired.
4002 *) Fix RSA blinding Heisenbug (problems sometimes occured on
4003 dual-core machines) and other potential thread-safety issues.
4006 Changes between 0.9.7i and 0.9.7j [04 May 2006]
4008 *) Adapt fipsld and the build system to link against the validated FIPS
4009 module in FIPS mode.
4012 *) Fixes for VC++ 2005 build under Windows.
4015 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4016 from a Windows bash shell such as MSYS. It is autodetected from the
4017 "config" script when run from a VC++ environment. Modify standard VC++
4018 build to use fipscanister.o from the GNU make build.
4021 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4023 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4024 The value now differs depending on if you build for FIPS or not.
4025 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4026 safely run with a non-FIPSed libcrypto, as it may crash because of
4027 the difference induced by this change.
4030 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4032 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4033 (part of SSL_OP_ALL). This option used to disable the
4034 countermeasure against man-in-the-middle protocol-version
4035 rollback in the SSL 2.0 server implementation, which is a bad
4036 idea. (CVE-2005-2969)
4038 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4039 for Information Security, National Institute of Advanced Industrial
4040 Science and Technology [AIST], Japan)]
4042 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4043 mainly for FIPS compliance and not fully integrated at this stage.
4046 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4047 the exponentiation using a fixed-length exponent. (Otherwise,
4048 the information leaked through timing could expose the secret key
4049 after many signatures; cf. Bleichenbacher's attack on DSA with
4053 *) Make a new fixed-window mod_exp implementation the default for
4054 RSA, DSA, and DH private-key operations so that the sequence of
4055 squares and multiplies and the memory access pattern are
4056 independent of the particular secret key. This will mitigate
4057 cache-timing and potential related attacks.
4059 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4060 and this is automatically used by BN_mod_exp_mont() if the new flag
4061 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4062 will use this BN flag for private exponents unless the flag
4063 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4064 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4066 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4068 *) Change the client implementation for SSLv23_method() and
4069 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4070 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4071 (Previously, the SSL 2.0 backwards compatible Client Hello
4072 message format would be used even with SSL_OP_NO_SSLv2.)
4075 *) Add support for smime-type MIME parameter in S/MIME messages which some
4079 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4080 a threadsafe manner. Modify rsa code to use new function and add calls
4081 to dsa and dh code (which had race conditions before).
4084 *) Include the fixed error library code in the C error file definitions
4085 instead of fixing them up at runtime. This keeps the error code
4086 structures constant.
4089 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4091 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4094 *) Fixes for newer kerberos headers. NB: the casts are needed because
4095 the 'length' field is signed on one version and unsigned on another
4096 with no (?) obvious way to tell the difference, without these VC++
4097 complains. Also the "definition" of FAR (blank) is no longer included
4098 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4099 some needed definitions.
4102 *) Undo Cygwin change.
4105 *) Added support for proxy certificates according to RFC 3820.
4106 Because they may be a security thread to unaware applications,
4107 they must be explicitely allowed in run-time. See
4108 docs/HOWTO/proxy_certificates.txt for further information.
4111 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4113 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4114 server and client random values. Previously
4115 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4116 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4118 This change has negligible security impact because:
4120 1. Server and client random values still have 24 bytes of pseudo random
4123 2. Server and client random values are sent in the clear in the initial
4126 3. The master secret is derived using the premaster secret (48 bytes in
4127 size for static RSA ciphersuites) as well as client server and random
4130 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4133 [Stephen Henson, reported by UK NISCC]
4135 *) Use Windows randomness collection on Cygwin.
4138 *) Fix hang in EGD/PRNGD query when communication socket is closed
4139 prematurely by EGD/PRNGD.
4140 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4142 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4145 *) Back-port of selected performance improvements from development
4146 branch, as well as improved support for PowerPC platforms.
4149 *) Add lots of checks for memory allocation failure, error codes to indicate
4150 failure and freeing up memory if a failure occurs.
4151 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4153 *) Add new -passin argument to dgst.
4156 *) Perform some character comparisons of different types in X509_NAME_cmp:
4157 this is needed for some certificates that reencode DNs into UTF8Strings
4158 (in violation of RFC3280) and can't or wont issue name rollover
4162 *) Make an explicit check during certificate validation to see that
4163 the CA setting in each certificate on the chain is correct. As a
4164 side effect always do the following basic checks on extensions,
4165 not just when there's an associated purpose to the check:
4167 - if there is an unhandled critical extension (unless the user
4168 has chosen to ignore this fault)
4169 - if the path length has been exceeded (if one is set at all)
4170 - that certain extensions fit the associated purpose (if one has
4174 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4176 *) Avoid a race condition when CRLs are checked in a multi threaded
4177 environment. This would happen due to the reordering of the revoked
4178 entries during signature checking and serial number lookup. Now the
4179 encoding is cached and the serial number sort performed under a lock.
4180 Add new STACK function sk_is_sorted().
4183 *) Add Delta CRL to the extension code.
4186 *) Various fixes to s3_pkt.c so alerts are sent properly.
4187 [David Holmes <d.holmes@f5.com>]
4189 *) Reduce the chances of duplicate issuer name and serial numbers (in
4190 violation of RFC3280) using the OpenSSL certificate creation utilities.
4191 This is done by creating a random 64 bit value for the initial serial
4192 number when a serial number file is created or when a self signed
4193 certificate is created using 'openssl req -x509'. The initial serial
4194 number file is created using 'openssl x509 -next_serial' in CA.pl
4195 rather than being initialized to 1.
4198 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4200 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4201 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4202 [Joe Orton, Steve Henson]
4204 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4206 [Joe Orton, Steve Henson]
4208 *) Make it possible to have multiple active certificates with the same
4209 subject in the CA index file. This is done only if the keyword
4210 'unique_subject' is set to 'no' in the main CA section (default
4211 if 'CA_default') of the configuration file. The value is saved
4212 with the database itself in a separate index attribute file,
4213 named like the index file with '.attr' appended to the name.
4216 *) X509 verify fixes. Disable broken certificate workarounds when
4217 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4218 keyUsage extension present. Don't accept CRLs with unhandled critical
4219 extensions: since verify currently doesn't process CRL extensions this
4220 rejects a CRL with *any* critical extensions. Add new verify error codes
4224 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4225 A clarification of RFC2560 will require the use of OCTET STRINGs and
4226 some implementations cannot handle the current raw format. Since OpenSSL
4227 copies and compares OCSP nonces as opaque blobs without any attempt at
4228 parsing them this should not create any compatibility issues.
4231 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4232 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4233 this HMAC (and other) operations are several times slower than OpenSSL
4237 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4238 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4240 *) Use the correct content when signing type "other".
4243 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4245 *) Fix various bugs revealed by running the NISCC test suite:
4247 Stop out of bounds reads in the ASN1 code when presented with
4248 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4250 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4252 If verify callback ignores invalid public key errors don't try to check
4253 certificate signature with the NULL public key.
4257 *) New -ignore_err option in ocsp application to stop the server
4258 exiting on the first error in a request.
4261 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4262 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4266 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4267 extra data after the compression methods not only for TLS 1.0
4268 but also for SSL 3.0 (as required by the specification).
4269 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4271 *) Change X509_certificate_type() to mark the key as exported/exportable
4272 when it's 512 *bits* long, not 512 bytes.
4275 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4276 blocks during encryption.
4279 *) Various fixes to base64 BIO and non blocking I/O. On write
4280 flushes were not handled properly if the BIO retried. On read
4281 data was not being buffered properly and had various logic bugs.
4282 This also affects blocking I/O when the data being decoded is a