5 Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
7 *) Experimental encrypt-then-mac support.
9 Experimental support for encrypt then mac from
10 draft-gutmann-tls-encrypt-then-mac-02.txt
12 To enable it set the appropriate extension number (0x42 for the test
13 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
15 For non-compliant peers (i.e. just about everything) this should have no
18 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
22 *) Add callbacks supporting generation and retrieval of supplemental
24 [Scott Deboy <sdeboy@apache.org>, Trevor Perrin and Ben Laurie]
26 *) Add EVP support for key wrapping algorithms, to avoid problems with
27 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
28 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
29 algorithms and include tests cases.
32 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
36 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
37 MGF1 digest and OAEP label.
40 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
41 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
42 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
45 *) Make openssl verify return errors.
46 [Chris Palmer <palmer@google.com> and Ben Laurie]
48 *) New function ASN1_TIME_diff to calculate the difference between two
49 ASN1_TIME structures or one structure and the current time.
52 *) Update fips_test_suite to support multiple command line options. New
53 test to induce all self test errors in sequence and check expected
57 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
58 sign or verify all in one operation.
61 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
62 test programs and fips_test_suite. Includes functionality to parse
63 the minimal script output of fipsalgest.pl directly.
66 *) Add authorisation parameter to FIPS_module_mode_set().
69 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
72 *) Use separate DRBG fields for internal and external flags. New function
73 FIPS_drbg_health_check() to perform on demand health checking. Add
74 generation tests to fips_test_suite with reduced health check interval to
75 demonstrate periodic health checking. Add "nodh" option to
76 fips_test_suite to skip very slow DH test.
79 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
83 *) More extensive health check for DRBG checking many more failure modes.
84 New function FIPS_selftest_drbg_all() to handle every possible DRBG
85 combination: call this in fips_test_suite.
88 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
89 and POST to handle Dual EC cases.
92 *) Add support for canonical generation of DSA parameter 'g'. See
95 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
96 POST to handle HMAC cases.
99 *) Add functions FIPS_module_version() and FIPS_module_version_text()
100 to return numerical and string versions of the FIPS module number.
103 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
104 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
105 outside the validated module in the FIPS capable OpenSSL.
108 *) Minor change to DRBG entropy callback semantics. In some cases
109 there is no multiple of the block length between min_len and
110 max_len. Allow the callback to return more than max_len bytes
111 of entropy but discard any extra: it is the callback's responsibility
112 to ensure that the extra data discarded does not impact the
113 requested amount of entropy.
116 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
117 information in FIPS186-3, SP800-57 and SP800-131A.
120 *) CCM support via EVP. Interface is very similar to GCM case except we
121 must supply all data in one chunk (i.e. no update, final) and the
122 message length must be supplied if AAD is used. Add algorithm test
126 *) Initial version of POST overhaul. Add POST callback to allow the status
127 of POST to be monitored and/or failures induced. Modify fips_test_suite
128 to use callback. Always run all selftests even if one fails.
131 *) XTS support including algorithm test driver in the fips_gcmtest program.
132 Note: this does increase the maximum key length from 32 to 64 bytes but
133 there should be no binary compatibility issues as existing applications
134 will never use XTS mode.
137 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
138 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
139 performs algorithm blocking for unapproved PRNG types. Also do not
140 set PRNG type in FIPS_mode_set(): leave this to the application.
141 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
142 the standard OpenSSL PRNG: set additional data to a date time vector.
145 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
146 This shouldn't present any incompatibility problems because applications
147 shouldn't be using these directly and any that are will need to rethink
148 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
151 *) Extensive self tests and health checking required by SP800-90 DRBG.
152 Remove strength parameter from FIPS_drbg_instantiate and always
153 instantiate at maximum supported strength.
156 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
159 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
162 *) New function DH_compute_key_padded() to compute a DH key and pad with
163 leading zeroes if needed: this complies with SP800-56A et al.
166 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
167 anything, incomplete, subject to change and largely untested at present.
170 *) Modify fipscanisteronly build option to only build the necessary object
171 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
174 *) Add experimental option FIPSSYMS to give all symbols in
175 fipscanister.o and FIPS or fips prefix. This will avoid
176 conflicts with future versions of OpenSSL. Add perl script
177 util/fipsas.pl to preprocess assembly language source files
178 and rename any affected symbols.
181 *) Add selftest checks and algorithm block of non-fips algorithms in
182 FIPS mode. Remove DES2 from selftests.
185 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
186 return internal method without any ENGINE dependencies. Add new
187 tiny fips sign and verify functions.
190 *) New build option no-ec2m to disable characteristic 2 code.
193 *) New build option "fipscanisteronly". This only builds fipscanister.o
194 and (currently) associated fips utilities. Uses the file Makefile.fips
195 instead of Makefile.org as the prototype.
198 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
199 Update fips_gcmtest to use IV generator.
202 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
203 setting output buffer to NULL. The *Final function must be
204 called although it will not retrieve any additional data. The tag
205 can be set or retrieved with a ctrl. The IV length is by default 12
206 bytes (96 bits) but can be set to an alternative value. If the IV
207 length exceeds the maximum IV length (currently 16 bytes) it cannot be
211 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
212 underlying do_cipher function handles all cipher semantics itself
213 including padding and finalisation. This is useful if (for example)
214 an ENGINE cipher handles block padding itself. The behaviour of
215 do_cipher is subtly changed if this flag is set: the return value
216 is the number of characters written to the output buffer (zero is
217 no longer an error code) or a negative error code. Also if the
218 input buffer is NULL and length 0 finalisation should be performed.
221 *) If a candidate issuer certificate is already part of the constructed
222 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
225 *) Improve forward-security support: add functions
227 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
228 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
230 for use by SSL/TLS servers; the callback function will be called whenever a
231 new session is created, and gets to decide whether the session may be
232 cached to make it resumable (return 0) or not (return 1). (As by the
233 SSL/TLS protocol specifications, the session_id sent by the server will be
234 empty to indicate that the session is not resumable; also, the server will
235 not generate RFC 4507 (RFC 5077) session tickets.)
237 A simple reasonable callback implementation is to return is_forward_secure.
238 This parameter will be set to 1 or 0 depending on the ciphersuite selected
239 by the SSL/TLS server library, indicating whether it can provide forward
241 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
243 *) New -verify_name option in command line utilities to set verification
247 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
248 Add CMAC pkey methods.
251 *) Experimental regnegotiation in s_server -www mode. If the client
252 browses /reneg connection is renegotiated. If /renegcert it is
253 renegotiated requesting a certificate.
256 *) Add an "external" session cache for debugging purposes to s_server. This
257 should help trace issues which normally are only apparent in deployed
258 multi-process servers.
261 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
262 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
263 BIO_set_cipher() and some obscure PEM functions were changed so they
264 can now return an error. The RAND changes required a change to the
265 RAND_METHOD structure.
268 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
269 a gcc attribute to warn if the result of a function is ignored. This
270 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
271 whose return value is often ignored.
274 Changes between 1.0.1e and 1.0.2 [xx XXX xxxx]
276 *) TLS pad extension: draft-agl-tls-padding-02
278 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
279 TLS client Hello record length value would otherwise be > 255 and
280 less that 512 pad with a dummy extension containing zeroes so it
281 is at least 512 bytes long.
283 To enable it use an unused extension number (for example chrome uses
286 e.g. -DTLSEXT_TYPE_padding=35655
288 Since the extension is ignored the actual number doesn't matter as long
289 as it doesn't clash with any existing extension.
291 This will be updated when the extension gets an official number.
293 [Adam Langley, Steve Henson]
295 *) Add functions to allocate and set the fields of an ECDSA_METHOD
297 [Douglas E. Engert, Steve Henson]
299 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
300 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
301 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
302 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
303 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
304 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
305 [Rob Stradling, Adam Langley]
307 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
308 difference in days and seconds between two tm or ASN1_TIME structures.
311 *) Add -rev test option to s_server to just reverse order of characters
312 received by client and send back to server. Also prints an abbreviated
313 summary of the connection parameters.
316 *) New option -brief for s_client and s_server to print out a brief summary
317 of connection parameters.
320 *) Add callbacks for arbitrary TLS extensions.
321 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
323 *) New option -crl_download in several openssl utilities to download CRLs
324 from CRLDP extension in certificates.
327 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
330 *) New function X509_CRL_diff to generate a delta CRL from the difference
331 of two full CRLs. Add support to "crl" utility.
334 *) New functions to set lookup_crls function and to retrieve
335 X509_STORE from X509_STORE_CTX.
338 *) Print out deprecated issuer and subject unique ID fields in
342 *) Extend OCSP I/O functions so they can be used for simple general purpose
343 HTTP as well as OCSP. New wrapper function which can be used to download
344 CRLs using the OCSP API.
347 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
350 *) SSL_CONF* functions. These provide a common framework for application
351 configuration using configuration files or command lines.
354 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
355 message callback and prints the results. Needs compile time option
356 "enable-ssl-trace". New options to s_client and s_server to enable
360 *) New ctrl and macro to retrieve supported points extensions.
361 Print out extension in s_server and s_client.
364 *) New functions to retrieve certificate signature and signature
368 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
372 *) New Suite B modes for TLS code. These use and enforce the requirements
373 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
374 only use Suite B curves. The Suite B modes can be set by using the
375 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
378 *) New chain verification flags for Suite B levels of security. Check
379 algorithms are acceptable when flags are set in X509_verify_cert.
382 *) Make tls1_check_chain return a set of flags indicating checks passed
383 by a certificate chain. Add additional tests to handle client
384 certificates: checks for matching certificate type and issuer name
388 *) If an attempt is made to use a signature algorithm not in the peer
389 preference list abort the handshake. If client has no suitable
390 signature algorithms in response to a certificate request do not
394 *) If server EC tmp key is not in client preference list abort handshake.
397 *) Add support for certificate stores in CERT structure. This makes it
398 possible to have different stores per SSL structure or one store in
399 the parent SSL_CTX. Include distint stores for certificate chain
400 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
401 to build and store a certificate chain in CERT structure: returing
402 an error if the chain cannot be built: this will allow applications
403 to test if a chain is correctly configured.
405 Note: if the CERT based stores are not set then the parent SSL_CTX
406 store is used to retain compatibility with existing behaviour.
410 *) New function ssl_set_client_disabled to set a ciphersuite disabled
411 mask based on the current session, check mask when sending client
412 hello and checking the requested ciphersuite.
415 *) New ctrls to retrieve and set certificate types in a certificate
416 request message. Print out received values in s_client. If certificate
417 types is not set with custom values set sensible values based on
418 supported signature algorithms.
421 *) Support for distinct client and server supported signature algorithms.
424 *) Add certificate callback. If set this is called whenever a certificate
425 is required by client or server. An application can decide which
426 certificate chain to present based on arbitrary criteria: for example
427 supported signature algorithms. Add very simple example to s_server.
428 This fixes many of the problems and restrictions of the existing client
429 certificate callback: for example you can now clear an existing
430 certificate and specify the whole chain.
433 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
434 the certificate can be used for (if anything). Set valid_flags field
435 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
436 to have similar checks in it.
438 Add new "cert_flags" field to CERT structure and include a "strict mode".
439 This enforces some TLS certificate requirements (such as only permitting
440 certificate signature algorithms contained in the supported algorithms
441 extension) which some implementations ignore: this option should be used
442 with caution as it could cause interoperability issues.
445 *) Update and tidy signature algorithm extension processing. Work out
446 shared signature algorithms based on preferences and peer algorithms
447 and print them out in s_client and s_server. Abort handshake if no
448 shared signature algorithms.
451 *) Add new functions to allow customised supported signature algorithms
452 for SSL and SSL_CTX structures. Add options to s_client and s_server
456 *) New function SSL_certs_clear() to delete all references to certificates
457 from an SSL structure. Before this once a certificate had been added
458 it couldn't be removed.
461 *) Integrate hostname, email address and IP address checking with certificate
462 verification. New verify options supporting checking in opensl utility.
465 *) Fixes and wildcard matching support to hostname and email checking
466 functions. Add manual page.
467 [Florian Weimer (Red Hat Product Security Team)]
469 *) New functions to check a hostname email or IP address against a
470 certificate. Add options x509 utility to print results of checks against
474 *) Fix OCSP checking.
475 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
477 *) Initial experimental support for explicitly trusted non-root CAs.
478 OpenSSL still tries to build a complete chain to a root but if an
479 intermediate CA has a trust setting included that is used. The first
480 setting is used: whether to trust (e.g., -addtrust option to the x509
484 *) Add -trusted_first option which attempts to find certificates in the
485 trusted store even if an untrusted chain is also supplied.
488 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
489 platform support for Linux and Android.
492 *) Support for linux-x32, ILP32 environment in x86_64 framework.
495 *) RFC 5878 (TLS Authorization Extensions) support.
496 [Emilia Kasper, Adam Langley, Ben Laurie (Google)]
498 *) Experimental multi-implementation support for FIPS capable OpenSSL.
499 When in FIPS mode the approved implementations are used as normal,
500 when not in FIPS mode the internal unapproved versions are used instead.
501 This means that the FIPS capable OpenSSL isn't forced to use the
502 (often lower perfomance) FIPS implementations outside FIPS mode.
505 *) Transparently support X9.42 DH parameters when calling
506 PEM_read_bio_DHparameters. This means existing applications can handle
507 the new parameter format automatically.
510 *) Initial experimental support for X9.42 DH parameter format: mainly
511 to support use of 'q' parameter for RFC5114 parameters.
514 *) Add DH parameters from RFC5114 including test data to dhtest.
517 *) Support for automatic EC temporary key parameter selection. If enabled
518 the most preferred EC parameters are automatically used instead of
519 hardcoded fixed parameters. Now a server just has to call:
520 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
521 support ECDH and use the most appropriate parameters.
524 *) Enhance and tidy EC curve and point format TLS extension code. Use
525 static structures instead of allocation if default values are used.
526 New ctrls to set curves we wish to support and to retrieve shared curves.
527 Print out shared curves in s_server. New options to s_server and s_client
528 to set list of supported curves.
531 *) New ctrls to retrieve supported signature algorithms and
532 supported curve values as an array of NIDs. Extend openssl utility
533 to print out received values.
536 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
537 between NIDs and the more common NIST names such as "P-256". Enhance
538 ecparam utility and ECC method to recognise the NIST names for curves.
541 *) Enhance SSL/TLS certificate chain handling to support different
542 chains for each certificate instead of one chain in the parent SSL_CTX.
545 *) Support for fixed DH ciphersuite client authentication: where both
546 server and client use DH certificates with common parameters.
549 *) Support for fixed DH ciphersuites: those requiring DH server
553 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
555 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
556 supporting platforms or when small records were transferred.
557 [Andy Polyakov, Steve Henson]
559 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
561 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
563 This addresses the flaw in CBC record processing discovered by
564 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
565 at: http://www.isg.rhul.ac.uk/tls/
567 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
568 Security Group at Royal Holloway, University of London
569 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
570 Emilia Käsper for the initial patch.
572 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
574 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
575 ciphersuites which can be exploited in a denial of service attack.
576 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
577 and detecting this bug and to Wolfgang Ettlinger
578 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
582 *) Return an error when checking OCSP signatures when key is NULL.
583 This fixes a DoS attack. (CVE-2013-0166)
586 *) Make openssl verify return errors.
587 [Chris Palmer <palmer@google.com> and Ben Laurie]
589 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
590 the right response is stapled. Also change SSL_get_certificate()
591 so it returns the certificate actually sent.
592 See http://rt.openssl.org/Ticket/Display.html?id=2836.
593 [Rob Stradling <rob.stradling@comodo.com>]
595 *) Fix possible deadlock when decoding public keys.
598 *) Don't use TLS 1.0 record version number in initial client hello
602 Changes between 1.0.1b and 1.0.1c [10 May 2012]
604 *) Sanity check record length before skipping explicit IV in TLS
605 1.2, 1.1 and DTLS to fix DoS attack.
607 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
608 fuzzing as a service testing platform.
612 *) Initialise tkeylen properly when encrypting CMS messages.
613 Thanks to Solar Designer of Openwall for reporting this issue.
616 *) In FIPS mode don't try to use composite ciphers as they are not
620 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
622 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
623 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
624 mean any application compiled against OpenSSL 1.0.0 headers setting
625 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
626 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
627 0x10000000L Any application which was previously compiled against
628 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
629 will need to be recompiled as a result. Letting be results in
630 inability to disable specifically TLS 1.1 and in client context,
631 in unlike event, limit maximum offered version to TLS 1.0 [see below].
634 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
635 disable just protocol X, but all protocols above X *if* there are
636 protocols *below* X still enabled. In more practical terms it means
637 that if application wants to disable TLS1.0 in favor of TLS1.1 and
638 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
639 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
643 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
645 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
646 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
647 in CRYPTO_realloc_clean.
649 Thanks to Tavis Ormandy, Google Security Team, for discovering this
650 issue and to Adam Langley <agl@chromium.org> for fixing it.
652 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
654 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
657 *) Workarounds for some broken servers that "hang" if a client hello
658 record length exceeds 255 bytes.
660 1. Do not use record version number > TLS 1.0 in initial client
661 hello: some (but not all) hanging servers will now work.
662 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
663 the number of ciphers sent in the client hello. This should be
664 set to an even number, such as 50, for example by passing:
665 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
666 Most broken servers should now work.
667 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
668 TLS 1.2 client support entirely.
671 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
674 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
676 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
677 STRING form instead of a DigestInfo.
680 *) The format used for MDC2 RSA signatures is inconsistent between EVP
681 and the RSA_sign/RSA_verify functions. This was made more apparent when
682 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
683 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
684 the correct format in RSA_verify so both forms transparently work.
687 *) Some servers which support TLS 1.0 can choke if we initially indicate
688 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
689 encrypted premaster secret. As a workaround use the maximum pemitted
690 client version in client hello, this should keep such servers happy
691 and still work with previous versions of OpenSSL.
694 *) Add support for TLS/DTLS heartbeats.
695 [Robin Seggelmann <seggelmann@fh-muenster.de>]
697 *) Add support for SCTP.
698 [Robin Seggelmann <seggelmann@fh-muenster.de>]
700 *) Improved PRNG seeding for VOS.
701 [Paul Green <Paul.Green@stratus.com>]
703 *) Extensive assembler packs updates, most notably:
705 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
706 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
707 - x86_64: bit-sliced AES implementation;
708 - ARM: NEON support, contemporary platforms optimizations;
709 - s390x: z196 support;
710 - *: GHASH and GF(2^m) multiplication implementations;
714 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
715 (removal of unnecessary code)
716 [Peter Sylvester <peter.sylvester@edelweb.fr>]
718 *) Add TLS key material exporter from RFC 5705.
721 *) Add DTLS-SRTP negotiation from RFC 5764.
724 *) Add Next Protocol Negotiation,
725 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
726 disabled with a no-npn flag to config or Configure. Code donated
728 [Adam Langley <agl@google.com> and Ben Laurie]
730 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
731 NIST-P256, NIST-P521, with constant-time single point multiplication on
732 typical inputs. Compiler support for the nonstandard type __uint128_t is
733 required to use this (present in gcc 4.4 and later, for 64-bit builds).
734 Code made available under Apache License version 2.0.
736 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
737 line to include this in your build of OpenSSL, and run "make depend" (or
738 "make update"). This enables the following EC_METHODs:
740 EC_GFp_nistp224_method()
741 EC_GFp_nistp256_method()
742 EC_GFp_nistp521_method()
744 EC_GROUP_new_by_curve_name() will automatically use these (while
745 EC_GROUP_new_curve_GFp() currently prefers the more flexible
747 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
749 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
750 all platforms. Move ssize_t definition from e_os.h to the public
751 header file e_os2.h as it now appears in public header file cms.h
754 *) New -sigopt option to the ca, req and x509 utilities. Additional
755 signature parameters can be passed using this option and in
759 *) Add RSA PSS signing function. This will generate and set the
760 appropriate AlgorithmIdentifiers for PSS based on those in the
761 corresponding EVP_MD_CTX structure. No application support yet.
764 *) Support for companion algorithm specific ASN1 signing routines.
765 New function ASN1_item_sign_ctx() signs a pre-initialised
766 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
767 the appropriate parameters.
770 *) Add new algorithm specific ASN1 verification initialisation function
771 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
772 handling will be the same no matter what EVP_PKEY_METHOD is used.
773 Add a PSS handler to support verification of PSS signatures: checked
774 against a number of sample certificates.
777 *) Add signature printing for PSS. Add PSS OIDs.
778 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
780 *) Add algorithm specific signature printing. An individual ASN1 method
781 can now print out signatures instead of the standard hex dump.
783 More complex signatures (e.g. PSS) can print out more meaningful
784 information. Include DSA version that prints out the signature
788 *) Password based recipient info support for CMS library: implementing
792 *) Split password based encryption into PBES2 and PBKDF2 functions. This
793 neatly separates the code into cipher and PBE sections and is required
794 for some algorithms that split PBES2 into separate pieces (such as
798 *) Session-handling fixes:
799 - Fix handling of connections that are resuming with a session ID,
800 but also support Session Tickets.
801 - Fix a bug that suppressed issuing of a new ticket if the client
802 presented a ticket with an expired session.
803 - Try to set the ticket lifetime hint to something reasonable.
804 - Make tickets shorter by excluding irrelevant information.
805 - On the client side, don't ignore renewed tickets.
806 [Adam Langley, Bodo Moeller (Google)]
808 *) Fix PSK session representation.
811 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
813 This work was sponsored by Intel.
816 *) Add GCM support to TLS library. Some custom code is needed to split
817 the IV between the fixed (from PRF) and explicit (from TLS record)
818 portions. This adds all GCM ciphersuites supported by RFC5288 and
819 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
820 add a special AESGCM string for GCM only.
823 *) Expand range of ctrls for AES GCM. Permit setting invocation
824 field on decrypt and retrieval of invocation field only on encrypt.
827 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
828 As required by RFC5289 these ciphersuites cannot be used if for
829 versions of TLS earlier than 1.2.
832 *) For FIPS capable OpenSSL interpret a NULL default public key method
833 as unset and return the appopriate default but do *not* set the default.
834 This means we can return the appopriate method in applications that
835 swicth between FIPS and non-FIPS modes.
838 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
839 ENGINE is used then we cannot handle that in the FIPS module so we
840 keep original code iff non-FIPS operations are allowed.
843 *) Add -attime option to openssl utilities.
844 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
846 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
849 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
850 FIPS EC methods unconditionally for now.
853 *) New build option no-ec2m to disable characteristic 2 code.
856 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
857 all cases can be covered as some introduce binary incompatibilities.
860 *) Redirect RSA operations to FIPS module including keygen,
861 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
864 *) Add similar low level API blocking to ciphers.
867 *) Low level digest APIs are not approved in FIPS mode: any attempt
868 to use these will cause a fatal error. Applications that *really* want
869 to use them can use the private_* version instead.
872 *) Redirect cipher operations to FIPS module for FIPS builds.
875 *) Redirect digest operations to FIPS module for FIPS builds.
878 *) Update build system to add "fips" flag which will link in fipscanister.o
879 for static and shared library builds embedding a signature if needed.
882 *) Output TLS supported curves in preference order instead of numerical
883 order. This is currently hardcoded for the highest order curves first.
884 This should be configurable so applications can judge speed vs strength.
887 *) Add TLS v1.2 server support for client authentication.
890 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
894 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
895 FIPS modules versions.
898 *) Add TLS v1.2 client side support for client authentication. Keep cache
899 of handshake records longer as we don't know the hash algorithm to use
900 until after the certificate request message is received.
903 *) Initial TLS v1.2 client support. Add a default signature algorithms
904 extension including all the algorithms we support. Parse new signature
905 format in client key exchange. Relax some ECC signing restrictions for
906 TLS v1.2 as indicated in RFC5246.
909 *) Add server support for TLS v1.2 signature algorithms extension. Switch
910 to new signature format when needed using client digest preference.
911 All server ciphersuites should now work correctly in TLS v1.2. No client
912 support yet and no support for client certificates.
915 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
916 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
917 ciphersuites. At present only RSA key exchange ciphersuites work with
918 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
919 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
920 and version checking.
923 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
924 with this defined it will not be affected by any changes to ssl internal
925 structures. Add several utility functions to allow openssl application
926 to work with OPENSSL_NO_SSL_INTERN defined.
930 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
932 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
935 *) Permit abbreviated handshakes when renegotiating using the function
936 SSL_renegotiate_abbreviated().
937 [Robin Seggelmann <seggelmann@fh-muenster.de>]
939 *) Add call to ENGINE_register_all_complete() to
940 ENGINE_load_builtin_engines(), so some implementations get used
941 automatically instead of needing explicit application support.
944 *) Add support for TLS key exporter as described in RFC5705.
945 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
947 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
948 a few changes are required:
950 Add SSL_OP_NO_TLSv1_1 flag.
952 Update version checking logic to handle version 1.1.
953 Add explicit IV handling (ported from DTLS code).
954 Add command line options to s_client/s_server.
957 Changes between 1.0.0j and 1.0.0k [5 Feb 2013]
959 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
961 This addresses the flaw in CBC record processing discovered by
962 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
963 at: http://www.isg.rhul.ac.uk/tls/
965 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
966 Security Group at Royal Holloway, University of London
967 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
968 Emilia Käsper for the initial patch.
970 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
972 *) Return an error when checking OCSP signatures when key is NULL.
973 This fixes a DoS attack. (CVE-2013-0166)
976 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
977 the right response is stapled. Also change SSL_get_certificate()
978 so it returns the certificate actually sent.
979 See http://rt.openssl.org/Ticket/Display.html?id=2836.
981 [Rob Stradling <rob.stradling@comodo.com>]
983 *) Fix possible deadlock when decoding public keys.
986 Changes between 1.0.0i and 1.0.0j [10 May 2012]
988 [NB: OpenSSL 1.0.0i and later 1.0.0 patch levels were released after
991 *) Sanity check record length before skipping explicit IV in DTLS
994 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
995 fuzzing as a service testing platform.
999 *) Initialise tkeylen properly when encrypting CMS messages.
1000 Thanks to Solar Designer of Openwall for reporting this issue.
1003 Changes between 1.0.0h and 1.0.0i [19 Apr 2012]
1005 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
1006 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
1007 in CRYPTO_realloc_clean.
1009 Thanks to Tavis Ormandy, Google Security Team, for discovering this
1010 issue and to Adam Langley <agl@chromium.org> for fixing it.
1012 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
1014 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
1016 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
1017 in CMS and PKCS7 code. When RSA decryption fails use a random key for
1018 content decryption and always return the same error. Note: this attack
1019 needs on average 2^20 messages so it only affects automated senders. The
1020 old behaviour can be reenabled in the CMS code by setting the
1021 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
1022 an MMA defence is not necessary.
1023 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
1024 this issue. (CVE-2012-0884)
1027 *) Fix CVE-2011-4619: make sure we really are receiving a
1028 client hello before rejecting multiple SGC restarts. Thanks to
1029 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
1032 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
1034 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1035 Thanks to Antonio Martin, Enterprise Secure Access Research and
1036 Development, Cisco Systems, Inc. for discovering this bug and
1037 preparing a fix. (CVE-2012-0050)
1040 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
1042 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1043 of the Vaudenay padding oracle attack on CBC mode encryption
1044 which enables an efficient plaintext recovery attack against
1045 the OpenSSL implementation of DTLS. Their attack exploits timing
1046 differences arising during decryption processing. A research
1047 paper describing this attack can be found at:
1048 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1049 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1050 Security Group at Royal Holloway, University of London
1051 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1052 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1053 for preparing the fix. (CVE-2011-4108)
1054 [Robin Seggelmann, Michael Tuexen]
1056 *) Clear bytes used for block padding of SSL 3.0 records.
1058 [Adam Langley (Google)]
1060 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1061 Kadianakis <desnacked@gmail.com> for discovering this issue and
1062 Adam Langley for preparing the fix. (CVE-2011-4619)
1063 [Adam Langley (Google)]
1065 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
1066 [Andrey Kulikov <amdeich@gmail.com>]
1068 *) Prevent malformed RFC3779 data triggering an assertion failure.
1069 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1070 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1071 [Rob Austein <sra@hactrn.net>]
1073 *) Improved PRNG seeding for VOS.
1074 [Paul Green <Paul.Green@stratus.com>]
1076 *) Fix ssl_ciph.c set-up race.
1077 [Adam Langley (Google)]
1079 *) Fix spurious failures in ecdsatest.c.
1080 [Emilia Käsper (Google)]
1082 *) Fix the BIO_f_buffer() implementation (which was mixing different
1083 interpretations of the '..._len' fields).
1084 [Adam Langley (Google)]
1086 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1087 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1088 threads won't reuse the same blinding coefficients.
1090 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1091 lock to call BN_BLINDING_invert_ex, and avoids one use of
1092 BN_BLINDING_update for each BN_BLINDING structure (previously,
1093 the last update always remained unused).
1094 [Emilia Käsper (Google)]
1096 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
1097 [Bob Buckholz (Google)]
1099 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
1101 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
1102 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
1103 [Kaspar Brand <ossl@velox.ch>]
1105 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1106 for multi-threaded use of ECDH. (CVE-2011-3210)
1107 [Adam Langley (Google)]
1109 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1112 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
1113 signature public key algorithm by using OID xref utilities instead.
1114 Before this you could only use some ECC ciphersuites with SHA1 only.
1117 *) Add protection against ECDSA timing attacks as mentioned in the paper
1118 by Billy Bob Brumley and Nicola Tuveri, see:
1120 http://eprint.iacr.org/2011/232.pdf
1122 [Billy Bob Brumley and Nicola Tuveri]
1124 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
1126 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1127 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1129 *) Fix bug in string printing code: if *any* escaping is enabled we must
1130 escape the escape character (backslash) or the resulting string is
1134 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
1136 *) Disable code workaround for ancient and obsolete Netscape browsers
1137 and servers: an attacker can use it in a ciphersuite downgrade attack.
1138 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1141 *) Fixed J-PAKE implementation error, originally discovered by
1142 Sebastien Martini, further info and confirmation from Stefan
1143 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1146 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
1148 *) Fix extension code to avoid race conditions which can result in a buffer
1149 overrun vulnerability: resumed sessions must not be modified as they can
1150 be shared by multiple threads. CVE-2010-3864
1153 *) Fix WIN32 build system to correctly link an ENGINE directory into
1157 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
1159 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
1161 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
1163 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
1165 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
1166 context. The operation can be customised via the ctrl mechanism in
1167 case ENGINEs want to include additional functionality.
1170 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
1173 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
1174 output hashes compatible with older versions of OpenSSL.
1175 [Willy Weisz <weisz@vcpc.univie.ac.at>]
1177 *) Fix compression algorithm handling: if resuming a session use the
1178 compression algorithm of the resumed session instead of determining
1179 it from client hello again. Don't allow server to change algorithm.
1182 *) Add load_crls() function to apps tidying load_certs() too. Add option
1183 to verify utility to allow additional CRLs to be included.
1186 *) Update OCSP request code to permit adding custom headers to the request:
1187 some responders need this.
1190 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
1192 [Julia Lawall <julia@diku.dk>]
1194 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
1195 needlessly dereferenced structures, used obsolete functions and
1196 didn't handle all updated verify codes correctly.
1199 *) Disable MD2 in the default configuration.
1202 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
1203 indicate the initial BIO being pushed or popped. This makes it possible
1204 to determine whether the BIO is the one explicitly called or as a result
1205 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
1206 it handles reference counts correctly and doesn't zero out the I/O bio
1207 when it is not being explicitly popped. WARNING: applications which
1208 included workarounds for the old buggy behaviour will need to be modified
1209 or they could free up already freed BIOs.
1212 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
1213 renaming to all platforms (within the 0.9.8 branch, this was
1214 done conditionally on Netware platforms to avoid a name clash).
1215 [Guenter <lists@gknw.net>]
1217 *) Add ECDHE and PSK support to DTLS.
1218 [Michael Tuexen <tuexen@fh-muenster.de>]
1220 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
1224 *) Add "missing" function EVP_MD_flags() (without this the only way to
1225 retrieve a digest flags is by accessing the structure directly. Update
1226 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
1227 or cipher is registered as in the "from" argument. Print out all
1228 registered digests in the dgst usage message instead of manually
1229 attempting to work them out.
1232 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
1233 this allows the use of compression and extensions. Change default cipher
1234 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
1235 by default unless an application cipher string requests it.
1238 *) Alter match criteria in PKCS12_parse(). It used to try to use local
1239 key ids to find matching certificates and keys but some PKCS#12 files
1240 don't follow the (somewhat unwritten) rules and this strategy fails.
1241 Now just gather all certificates together and the first private key
1242 then look for the first certificate that matches the key.
1245 *) Support use of registered digest and cipher names for dgst and cipher
1246 commands instead of having to add each one as a special case. So now
1253 openssl dgst -sha256 foo
1255 and this works for ENGINE based algorithms too.
1259 *) Update Gost ENGINE to support parameter files.
1260 [Victor B. Wagner <vitus@cryptocom.ru>]
1262 *) Support GeneralizedTime in ca utility.
1263 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
1265 *) Enhance the hash format used for certificate directory links. The new
1266 form uses the canonical encoding (meaning equivalent names will work
1267 even if they aren't identical) and uses SHA1 instead of MD5. This form
1268 is incompatible with the older format and as a result c_rehash should
1269 be used to rebuild symbolic links.
1272 *) Make PKCS#8 the default write format for private keys, replacing the
1273 traditional format. This form is standardised, more secure and doesn't
1274 include an implicit MD5 dependency.
1277 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
1278 committed to OpenSSL should pass this lot as a minimum.
1281 *) Add session ticket override functionality for use by EAP-FAST.
1282 [Jouni Malinen <j@w1.fi>]
1284 *) Modify HMAC functions to return a value. Since these can be implemented
1285 in an ENGINE errors can occur.
1288 *) Type-checked OBJ_bsearch_ex.
1291 *) Type-checked OBJ_bsearch. Also some constification necessitated
1292 by type-checking. Still to come: TXT_DB, bsearch(?),
1293 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
1297 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
1298 seconds to a tm structure directly, instead of going through OS
1299 specific date routines. This avoids any issues with OS routines such
1300 as the year 2038 bug. New *_adj() functions for ASN1 time structures
1301 and X509_time_adj_ex() to cover the extended range. The existing
1302 X509_time_adj() is still usable and will no longer have any date issues.
1305 *) Delta CRL support. New use deltas option which will attempt to locate
1306 and search any appropriate delta CRLs available.
1308 This work was sponsored by Google.
1311 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
1312 code and add additional score elements. Validate alternate CRL paths
1313 as part of the CRL checking and indicate a new error "CRL path validation
1314 error" in this case. Applications wanting additional details can use
1315 the verify callback and check the new "parent" field. If this is not
1316 NULL CRL path validation is taking place. Existing applications wont
1317 see this because it requires extended CRL support which is off by
1320 This work was sponsored by Google.
1323 *) Support for freshest CRL extension.
1325 This work was sponsored by Google.
1328 *) Initial indirect CRL support. Currently only supported in the CRLs
1329 passed directly and not via lookup. Process certificate issuer
1330 CRL entry extension and lookup CRL entries by bother issuer name
1331 and serial number. Check and process CRL issuer entry in IDP extension.
1333 This work was sponsored by Google.
1336 *) Add support for distinct certificate and CRL paths. The CRL issuer
1337 certificate is validated separately in this case. Only enabled if
1338 an extended CRL support flag is set: this flag will enable additional
1339 CRL functionality in future.
1341 This work was sponsored by Google.
1344 *) Add support for policy mappings extension.
1346 This work was sponsored by Google.
1349 *) Fixes to pathlength constraint, self issued certificate handling,
1350 policy processing to align with RFC3280 and PKITS tests.
1352 This work was sponsored by Google.
1355 *) Support for name constraints certificate extension. DN, email, DNS
1356 and URI types are currently supported.
1358 This work was sponsored by Google.
1361 *) To cater for systems that provide a pointer-based thread ID rather
1362 than numeric, deprecate the current numeric thread ID mechanism and
1363 replace it with a structure and associated callback type. This
1364 mechanism allows a numeric "hash" to be extracted from a thread ID in
1365 either case, and on platforms where pointers are larger than 'long',
1366 mixing is done to help ensure the numeric 'hash' is usable even if it
1367 can't be guaranteed unique. The default mechanism is to use "&errno"
1368 as a pointer-based thread ID to distinguish between threads.
1370 Applications that want to provide their own thread IDs should now use
1371 CRYPTO_THREADID_set_callback() to register a callback that will call
1372 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
1374 Note that ERR_remove_state() is now deprecated, because it is tied
1375 to the assumption that thread IDs are numeric. ERR_remove_state(0)
1376 to free the current thread's error state should be replaced by
1377 ERR_remove_thread_state(NULL).
1379 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
1380 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
1381 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
1382 application was previously providing a numeric thread callback that
1383 was inappropriate for distinguishing threads, then uniqueness might
1384 have been obtained with &errno that happened immediately in the
1385 intermediate development versions of OpenSSL; this is no longer the
1386 case, the numeric thread callback will now override the automatic use
1388 [Geoff Thorpe, with help from Bodo Moeller]
1390 *) Initial support for different CRL issuing certificates. This covers a
1391 simple case where the self issued certificates in the chain exist and
1392 the real CRL issuer is higher in the existing chain.
1394 This work was sponsored by Google.
1397 *) Removed effectively defunct crypto/store from the build.
1400 *) Revamp of STACK to provide stronger type-checking. Still to come:
1401 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
1402 ASN1_STRING, CONF_VALUE.
1405 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
1406 RAM on SSL connections. This option can save about 34k per idle SSL.
1409 *) Revamp of LHASH to provide stronger type-checking. Still to come:
1410 STACK, TXT_DB, bsearch, qsort.
1413 *) Initial support for Cryptographic Message Syntax (aka CMS) based
1414 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
1415 support for data, signedData, compressedData, digestedData and
1416 encryptedData, envelopedData types included. Scripts to check against
1417 RFC4134 examples draft and interop and consistency checks of many
1418 content types and variants.
1421 *) Add options to enc utility to support use of zlib compression BIO.
1424 *) Extend mk1mf to support importing of options and assembly language
1425 files from Configure script, currently only included in VC-WIN32.
1426 The assembly language rules can now optionally generate the source
1427 files from the associated perl scripts.
1430 *) Implement remaining functionality needed to support GOST ciphersuites.
1431 Interop testing has been performed using CryptoPro implementations.
1432 [Victor B. Wagner <vitus@cryptocom.ru>]
1434 *) s390x assembler pack.
1437 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
1441 *) Implement Opaque PRF Input TLS extension as specified in
1442 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
1443 official specification yet and no extension type assignment by
1444 IANA exists, this extension (for now) will have to be explicitly
1445 enabled when building OpenSSL by providing the extension number
1446 to use. For example, specify an option
1448 -DTLSEXT_TYPE_opaque_prf_input=0x9527
1450 to the "config" or "Configure" script to enable the extension,
1451 assuming extension number 0x9527 (which is a completely arbitrary
1452 and unofficial assignment based on the MD5 hash of the Internet
1453 Draft). Note that by doing so, you potentially lose
1454 interoperability with other TLS implementations since these might
1455 be using the same extension number for other purposes.
1457 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
1458 opaque PRF input value to use in the handshake. This will create
1459 an interal copy of the length-'len' string at 'src', and will
1460 return non-zero for success.
1462 To get more control and flexibility, provide a callback function
1465 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
1466 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
1470 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
1473 Callback function 'cb' will be called in handshakes, and is
1474 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
1475 Argument 'arg' is for application purposes (the value as given to
1476 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
1477 be provided to the callback function). The callback function
1478 has to return non-zero to report success: usually 1 to use opaque
1479 PRF input just if possible, or 2 to enforce use of the opaque PRF
1480 input. In the latter case, the library will abort the handshake
1481 if opaque PRF input is not successfully negotiated.
1483 Arguments 'peerinput' and 'len' given to the callback function
1484 will always be NULL and 0 in the case of a client. A server will
1485 see the client's opaque PRF input through these variables if
1486 available (NULL and 0 otherwise). Note that if the server
1487 provides an opaque PRF input, the length must be the same as the
1488 length of the client's opaque PRF input.
1490 Note that the callback function will only be called when creating
1491 a new session (session resumption can resume whatever was
1492 previously negotiated), and will not be called in SSL 2.0
1493 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1494 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1495 for applications that need to enforce opaque PRF input.
1499 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1502 [Victor B. Wagner <vitus@cryptocom.ru>]
1504 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1505 RFC4507bis. The encrypted ticket format is an encrypted encoded
1506 SSL_SESSION structure, that way new session features are automatically
1509 If a client application caches session in an SSL_SESSION structure
1510 support is transparent because tickets are now stored in the encoded
1513 The SSL_CTX structure automatically generates keys for ticket
1514 protection in servers so again support should be possible
1515 with no application modification.
1517 If a client or server wishes to disable RFC4507 support then the option
1518 SSL_OP_NO_TICKET can be set.
1520 Add a TLS extension debugging callback to allow the contents of any client
1521 or server extensions to be examined.
1523 This work was sponsored by Google.
1526 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1527 OpenSSL should now compile cleanly on gcc 4.2
1528 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1530 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1531 support including streaming MAC support: this is required for GOST
1532 ciphersuite support.
1533 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1535 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1536 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1537 to output in BER and PEM format.
1540 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1541 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1542 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1543 ENGINE support for HMAC keys which are unextractable. New -mac and
1544 -macopt options to dgst utility.
1547 *) New option -sigopt to dgst utility. Update dgst to use
1548 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1549 alternative signing paramaters such as X9.31 or PSS in the dgst
1553 *) Change ssl_cipher_apply_rule(), the internal function that does
1554 the work each time a ciphersuite string requests enabling
1555 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1556 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1557 the order of disabled ciphersuites such that those ciphersuites
1558 that most recently went from enabled to disabled not only stay
1559 in order with respect to each other, but also have higher priority
1560 than other disabled ciphersuites the next time ciphersuites are
1563 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1564 the same ciphersuites as with "HIGH" alone, but in a specific
1565 order where the PSK ciphersuites come first (since they are the
1566 most recently disabled ciphersuites when "HIGH" is parsed).
1568 Also, change ssl_create_cipher_list() (using this new
1569 funcionality) such that between otherwise identical
1570 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1574 *) Change ssl_create_cipher_list() so that it automatically
1575 arranges the ciphersuites in reasonable order before starting
1576 to process the rule string. Thus, the definition for "DEFAULT"
1577 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1578 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1579 This makes it much easier to arrive at a reasonable default order
1580 in applications for which anonymous ciphers are OK (meaning
1581 that you can't actually use DEFAULT).
1582 [Bodo Moeller; suggested by Victor Duchovni]
1584 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1585 processing) into multiple integers instead of setting
1586 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1587 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1588 (These masks as well as the individual bit definitions are hidden
1589 away into the non-exported interface ssl/ssl_locl.h, so this
1590 change to the definition of the SSL_CIPHER structure shouldn't
1591 affect applications.) This give us more bits for each of these
1592 categories, so there is no longer a need to coagulate AES128 and
1593 AES256 into a single algorithm bit, and to coagulate Camellia128
1594 and Camellia256 into a single algorithm bit, which has led to all
1597 Thus, among other things, the kludge introduced in 0.9.7m and
1598 0.9.8e for masking out AES256 independently of AES128 or masking
1599 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1601 With the change, we also introduce new ciphersuite aliases that
1602 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1606 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1607 Use the leftmost N bytes of the signature input if the input is
1608 larger than the prime q (with N being the size in bytes of q).
1611 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1612 it yet and it is largely untested.
1615 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1618 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1619 some compilers (gcc 4.2 and later) reject their use. Safestack is
1620 reimplemented. Update ASN1 to avoid use of legacy functions.
1623 *) Win32/64 targets are linked with Winsock2.
1626 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1627 to external functions. This can be used to increase CRL handling
1628 efficiency especially when CRLs are very large by (for example) storing
1629 the CRL revoked certificates in a database.
1632 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1633 new CRLs added to a directory can be used. New command line option
1634 -verify_return_error to s_client and s_server. This causes real errors
1635 to be returned by the verify callback instead of carrying on no matter
1636 what. This reflects the way a "real world" verify callback would behave.
1639 *) GOST engine, supporting several GOST algorithms and public key formats.
1640 Kindly donated by Cryptocom.
1643 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1644 partitioned by DP are handled but no indirect CRL or reason partitioning
1645 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1646 selected via a scoring technique which handles IDP and AKID in CRLs.
1649 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1650 will ultimately be used for all verify operations: this will remove the
1651 X509_STORE dependency on certificate verification and allow alternative
1652 lookup methods. X509_STORE based implementations of these two callbacks.
1655 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1656 Modify get_crl() to find a valid (unexpired) CRL if possible.
1659 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1660 this would be called X509_CRL_cmp() but that name is already used by
1661 a function that just compares CRL issuer names. Cache several CRL
1662 extensions in X509_CRL structure and cache CRLDP in X509.
1665 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1666 this maps equivalent X509_NAME structures into a consistent structure.
1667 Name comparison can then be performed rapidly using memcmp().
1670 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1674 *) Allow digests to supply their own micalg string for S/MIME type using
1675 the ctrl EVP_MD_CTRL_MICALG.
1678 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1679 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1680 ctrl. It can then customise the structure before and/or after signing
1684 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1685 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1686 to free up any added signature OIDs.
1689 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1690 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1691 digest and cipher tables. New options added to openssl utility:
1692 list-message-digest-algorithms and list-cipher-algorithms.
1695 *) Change the array representation of binary polynomials: the list
1696 of degrees of non-zero coefficients is now terminated with -1.
1697 Previously it was terminated with 0, which was also part of the
1698 value; thus, the array representation was not applicable to
1699 polynomials where t^0 has coefficient zero. This change makes
1700 the array representation useful in a more general context.
1703 *) Various modifications and fixes to SSL/TLS cipher string
1704 handling. For ECC, the code now distinguishes between fixed ECDH
1705 with RSA certificates on the one hand and with ECDSA certificates
1706 on the other hand, since these are separate ciphersuites. The
1707 unused code for Fortezza ciphersuites has been removed.
1709 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1710 (not "ECDHE"). For consistency with the code for DH
1711 certificates, use of ECDH certificates is now considered ECDH
1712 authentication, not RSA or ECDSA authentication (the latter is
1713 merely the CA's signing algorithm and not actively used in the
1716 The temporary ciphersuite alias "ECCdraft" is no longer
1717 available, and ECC ciphersuites are no longer excluded from "ALL"
1718 and "DEFAULT". The following aliases now exist for RFC 4492
1719 ciphersuites, most of these by analogy with the DH case:
1721 kECDHr - ECDH cert, signed with RSA
1722 kECDHe - ECDH cert, signed with ECDSA
1723 kECDH - ECDH cert (signed with either RSA or ECDSA)
1724 kEECDH - ephemeral ECDH
1725 ECDH - ECDH cert or ephemeral ECDH
1731 AECDH - anonymous ECDH
1732 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1736 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1737 Use correct micalg parameters depending on digest(s) in signed message.
1740 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1741 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1744 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1745 an engine to register a method. Add ENGINE lookups for methods and
1746 functional reference processing.
1749 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1750 EVP_{Sign,Verify}* which allow an application to customise the signature
1754 *) New -resign option to smime utility. This adds one or more signers
1755 to an existing PKCS#7 signedData structure. Also -md option to use an
1756 alternative message digest algorithm for signing.
1759 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1760 create PKCS7 structures containing multiple signers. Update smime
1761 application to support multiple signers.
1764 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1768 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1769 Reorganize PBE internals to lookup from a static table using NIDs,
1770 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1771 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1772 PRF which will be automatically used with PBES2.
1775 *) Replace the algorithm specific calls to generate keys in "req" with the
1779 *) Update PKCS#7 enveloped data routines to use new API. This is now
1780 supported by any public key method supporting the encrypt operation. A
1781 ctrl is added to allow the public key algorithm to examine or modify
1782 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1786 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1787 a default digest type to use. In most cases this will be SHA1 but some
1788 algorithms (such as GOST) need to specify an alternative digest. The
1789 return value indicates how strong the prefernce is 1 means optional and
1790 2 is mandatory (that is it is the only supported type). Modify
1791 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1792 use the default md. Update openssl utilities to use the default digest
1793 type for signing if it is not explicitly indicated.
1796 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1797 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1798 signing method from the key type. This effectively removes the link
1799 between digests and public key types.
1802 *) Add an OID cross reference table and utility functions. Its purpose is to
1803 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1804 rsaEncryption. This will allow some of the algorithm specific hackery
1805 needed to use the correct OID to be removed.
1808 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1809 structures for PKCS7_sign(). They are now set up by the relevant public
1813 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1816 *) Add support for key derivation (agreement) in the API, DH method and
1820 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1821 public and private key formats. As a side effect these add additional
1822 command line functionality not previously available: DSA signatures can be
1823 generated and verified using pkeyutl and DH key support and generation in
1828 [Oliver Tappe <zooey@hirschkaefer.de>]
1830 *) New make target "install_html_docs" installs HTML renditions of the
1832 [Oliver Tappe <zooey@hirschkaefer.de>]
1834 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1835 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1836 support key and parameter generation and add initial key generation
1837 functionality for RSA.
1840 *) Add functions for main EVP_PKEY_method operations. The undocumented
1841 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1842 EVP_PKEY_{encrypt,decrypt}_old.
1845 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1846 key API, doesn't do much yet.
1849 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1850 public key algorithms. New option to openssl utility:
1851 "list-public-key-algorithms" to print out info.
1854 *) Implement the Supported Elliptic Curves Extension for
1855 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1858 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1859 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1862 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1863 utilities such as rsa, dsa, dsaparam etc except they process any key
1867 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1868 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1869 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1873 *) Initial support for pluggable public key ASN1.
1874 De-spaghettify the public key ASN1 handling. Move public and private
1875 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1876 algorithm specific handling to a single module within the relevant
1877 algorithm directory. Add functions to allow (near) opaque processing
1878 of public and private key structures.
1881 *) Implement the Supported Point Formats Extension for
1882 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1885 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1886 for the psk identity [hint] and the psk callback functions to the
1887 SSL_SESSION, SSL and SSL_CTX structure.
1890 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1894 SSL_CTX_use_psk_identity_hint
1895 SSL_get_psk_identity_hint
1896 SSL_get_psk_identity
1897 SSL_use_psk_identity_hint
1899 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1901 *) Add RFC 3161 compliant time stamp request creation, response generation
1902 and response verification functionality.
1903 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1905 *) Add initial support for TLS extensions, specifically for the server_name
1906 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1907 have new members for a host name. The SSL data structure has an
1908 additional member SSL_CTX *initial_ctx so that new sessions can be
1909 stored in that context to allow for session resumption, even after the
1910 SSL has been switched to a new SSL_CTX in reaction to a client's
1911 server_name extension.
1913 New functions (subject to change):
1915 SSL_get_servername()
1916 SSL_get_servername_type()
1919 New CTRL codes and macros (subject to change):
1921 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1922 - SSL_CTX_set_tlsext_servername_callback()
1923 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1924 - SSL_CTX_set_tlsext_servername_arg()
1925 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1927 openssl s_client has a new '-servername ...' option.
1929 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1930 '-key2 ...', '-servername_fatal' (subject to change). This allows
1931 testing the HostName extension for a specific single host name ('-cert'
1932 and '-key' remain fallbacks for handshakes without HostName
1933 negotiation). If the unrecogninzed_name alert has to be sent, this by
1934 default is a warning; it becomes fatal with the '-servername_fatal'
1937 [Peter Sylvester, Remy Allais, Christophe Renou]
1939 *) Whirlpool hash implementation is added.
1942 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1943 bn(64,32). Because of instruction set limitations it doesn't have
1944 any negative impact on performance. This was done mostly in order
1945 to make it possible to share assembler modules, such as bn_mul_mont
1946 implementations, between 32- and 64-bit builds without hassle.
1949 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1950 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1954 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1955 dedicated Montgomery multiplication procedure, is introduced.
1956 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1957 "64-bit" performance on certain 32-bit targets.
1960 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1961 in SSL structures. New SSL ctrl to set maximum send fragment size.
1962 Save memory by seeting the I/O buffer sizes dynamically instead of
1963 using the maximum available value.
1966 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1967 in addition to the text details.
1970 *) Very, very preliminary EXPERIMENTAL support for printing of general
1971 ASN1 structures. This currently produces rather ugly output and doesn't
1972 handle several customised structures at all.
1975 *) Integrated support for PVK file format and some related formats such
1976 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1977 these in the 'rsa' and 'dsa' utilities.
1980 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1983 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1984 place for the (very old) "NETSCAPE" format certificates which are now
1985 handled using new ASN1 code equivalents.
1988 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1989 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1990 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1993 *) Modify CRL distribution points extension code to print out previously
1994 unsupported fields. Enhance extension setting code to allow setting of
1998 *) Add print and set support for Issuing Distribution Point CRL extension.
2001 *) Change 'Configure' script to enable Camellia by default.
2004 Changes between 0.9.8x and 0.9.8y [5 Feb 2013]
2006 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2008 This addresses the flaw in CBC record processing discovered by
2009 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2010 at: http://www.isg.rhul.ac.uk/tls/
2012 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2013 Security Group at Royal Holloway, University of London
2014 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2015 Emilia Käsper for the initial patch.
2017 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2019 *) Return an error when checking OCSP signatures when key is NULL.
2020 This fixes a DoS attack. (CVE-2013-0166)
2023 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2024 the right response is stapled. Also change SSL_get_certificate()
2025 so it returns the certificate actually sent.
2026 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2027 (This is a backport)
2028 [Rob Stradling <rob.stradling@comodo.com>]
2030 *) Fix possible deadlock when decoding public keys.
2033 Changes between 0.9.8w and 0.9.8x [10 May 2012]
2035 *) Sanity check record length before skipping explicit IV in DTLS
2038 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2039 fuzzing as a service testing platform.
2043 *) Initialise tkeylen properly when encrypting CMS messages.
2044 Thanks to Solar Designer of Openwall for reporting this issue.
2047 Changes between 0.9.8v and 0.9.8w [23 Apr 2012]
2049 *) The fix for CVE-2012-2110 did not take into account that the
2050 'len' argument to BUF_MEM_grow and BUF_MEM_grow_clean is an
2051 int in OpenSSL 0.9.8, making it still vulnerable. Fix by
2052 rejecting negative len parameter. (CVE-2012-2131)
2053 [Tomas Hoger <thoger@redhat.com>]
2055 Changes between 0.9.8u and 0.9.8v [19 Apr 2012]
2057 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2058 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2059 in CRYPTO_realloc_clean.
2061 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2062 issue and to Adam Langley <agl@chromium.org> for fixing it.
2064 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2066 Changes between 0.9.8t and 0.9.8u [12 Mar 2012]
2068 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
2069 in CMS and PKCS7 code. When RSA decryption fails use a random key for
2070 content decryption and always return the same error. Note: this attack
2071 needs on average 2^20 messages so it only affects automated senders. The
2072 old behaviour can be reenabled in the CMS code by setting the
2073 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
2074 an MMA defence is not necessary.
2075 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
2076 this issue. (CVE-2012-0884)
2079 *) Fix CVE-2011-4619: make sure we really are receiving a
2080 client hello before rejecting multiple SGC restarts. Thanks to
2081 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
2084 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
2086 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
2087 Thanks to Antonio Martin, Enterprise Secure Access Research and
2088 Development, Cisco Systems, Inc. for discovering this bug and
2089 preparing a fix. (CVE-2012-0050)
2092 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
2094 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
2095 of the Vaudenay padding oracle attack on CBC mode encryption
2096 which enables an efficient plaintext recovery attack against
2097 the OpenSSL implementation of DTLS. Their attack exploits timing
2098 differences arising during decryption processing. A research
2099 paper describing this attack can be found at:
2100 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
2101 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2102 Security Group at Royal Holloway, University of London
2103 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
2104 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
2105 for preparing the fix. (CVE-2011-4108)
2106 [Robin Seggelmann, Michael Tuexen]
2108 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
2109 [Ben Laurie, Kasper <ekasper@google.com>]
2111 *) Clear bytes used for block padding of SSL 3.0 records.
2113 [Adam Langley (Google)]
2115 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
2116 Kadianakis <desnacked@gmail.com> for discovering this issue and
2117 Adam Langley for preparing the fix. (CVE-2011-4619)
2118 [Adam Langley (Google)]
2120 *) Prevent malformed RFC3779 data triggering an assertion failure.
2121 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
2122 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
2123 [Rob Austein <sra@hactrn.net>]
2125 *) Fix ssl_ciph.c set-up race.
2126 [Adam Langley (Google)]
2128 *) Fix spurious failures in ecdsatest.c.
2129 [Emilia Käsper (Google)]
2131 *) Fix the BIO_f_buffer() implementation (which was mixing different
2132 interpretations of the '..._len' fields).
2133 [Adam Langley (Google)]
2135 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
2136 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
2137 threads won't reuse the same blinding coefficients.
2139 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
2140 lock to call BN_BLINDING_invert_ex, and avoids one use of
2141 BN_BLINDING_update for each BN_BLINDING structure (previously,
2142 the last update always remained unused).
2143 [Emilia Käsper (Google)]
2145 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
2146 for multi-threaded use of ECDH.
2147 [Adam Langley (Google)]
2149 *) Fix x509_name_ex_d2i memory leak on bad inputs.
2152 *) Add protection against ECDSA timing attacks as mentioned in the paper
2153 by Billy Bob Brumley and Nicola Tuveri, see:
2155 http://eprint.iacr.org/2011/232.pdf
2157 [Billy Bob Brumley and Nicola Tuveri]
2159 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
2161 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
2162 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
2164 *) Fix bug in string printing code: if *any* escaping is enabled we must
2165 escape the escape character (backslash) or the resulting string is
2169 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
2171 *) Disable code workaround for ancient and obsolete Netscape browsers
2172 and servers: an attacker can use it in a ciphersuite downgrade attack.
2173 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
2176 *) Fixed J-PAKE implementation error, originally discovered by
2177 Sebastien Martini, further info and confirmation from Stefan
2178 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
2181 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
2183 *) Fix extension code to avoid race conditions which can result in a buffer
2184 overrun vulnerability: resumed sessions must not be modified as they can
2185 be shared by multiple threads. CVE-2010-3864
2188 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
2191 *) Don't reencode certificate when calculating signature: cache and use
2192 the original encoding instead. This makes signature verification of
2193 some broken encodings work correctly.
2196 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
2197 is also one of the inputs.
2198 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
2200 *) Don't repeatedly append PBE algorithms to table if they already exist.
2201 Sort table on each new add. This effectively makes the table read only
2202 after all algorithms are added and subsequent calls to PKCS12_pbe_add
2206 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
2208 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
2211 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
2212 access or freeing data twice (CVE-2010-0742)
2213 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
2215 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
2216 common in certificates and some applications which only call
2217 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
2221 Reduce copying into .apps and .test in makevms.com
2222 Don't try to use blank CA certificate in CA.com
2223 Allow use of C files from original directories in maketests.com
2224 [Steven M. Schweda" <sms@antinode.info>]
2226 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
2228 *) When rejecting SSL/TLS records due to an incorrect version number, never
2229 update s->server with a new major version number. As of
2230 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
2231 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
2232 the previous behavior could result in a read attempt at NULL when
2233 receiving specific incorrect SSL/TLS records once record payload
2234 protection is active. (CVE-2010-0740)
2235 [Bodo Moeller, Adam Langley <agl@chromium.org>]
2237 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
2238 could be crashed if the relevant tables were not present (e.g. chrooted).
2239 [Tomas Hoger <thoger@redhat.com>]
2241 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
2243 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
2244 [Martin Olsson, Neel Mehta]
2246 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
2247 accommodate for stack sorting, always a write lock!).
2250 *) On some versions of WIN32 Heap32Next is very slow. This can cause
2251 excessive delays in the RAND_poll(): over a minute. As a workaround
2252 include a time check in the inner Heap32Next loop too.
2255 *) The code that handled flushing of data in SSL/TLS originally used the
2256 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
2257 the problem outlined in PR#1949. The fix suggested there however can
2258 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
2259 of Apache). So instead simplify the code to flush unconditionally.
2260 This should be fine since flushing with no data to flush is a no op.
2263 *) Handle TLS versions 2.0 and later properly and correctly use the
2264 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
2265 off ancient servers have a habit of sticking around for a while...
2268 *) Modify compression code so it frees up structures without using the
2269 ex_data callbacks. This works around a problem where some applications
2270 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
2271 restarting) then use compression (e.g. SSL with compression) later.
2272 This results in significant per-connection memory leaks and
2273 has caused some security issues including CVE-2008-1678 and
2277 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
2278 change when encrypting or decrypting.
2281 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
2282 connect and renegotiate with servers which do not support RI.
2283 Until RI is more widely deployed this option is enabled by default.
2286 *) Add "missing" ssl ctrls to clear options and mode.
2289 *) If client attempts to renegotiate and doesn't support RI respond with
2290 a no_renegotiation alert as required by RFC5746. Some renegotiating
2291 TLS clients will continue a connection gracefully when they receive
2292 the alert. Unfortunately OpenSSL mishandled this alert and would hang
2293 waiting for a server hello which it will never receive. Now we treat a
2294 received no_renegotiation alert as a fatal error. This is because
2295 applications requesting a renegotiation might well expect it to succeed
2296 and would have no code in place to handle the server denying it so the
2297 only safe thing to do is to terminate the connection.
2300 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
2301 peer supports secure renegotiation and 0 otherwise. Print out peer
2302 renegotiation support in s_client/s_server.
2305 *) Replace the highly broken and deprecated SPKAC certification method with
2306 the updated NID creation version. This should correctly handle UTF8.
2309 *) Implement RFC5746. Re-enable renegotiation but require the extension
2310 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
2311 turns out to be a bad idea. It has been replaced by
2312 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
2313 SSL_CTX_set_options(). This is really not recommended unless you
2314 know what you are doing.
2315 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
2317 *) Fixes to stateless session resumption handling. Use initial_ctx when
2318 issuing and attempting to decrypt tickets in case it has changed during
2319 servername handling. Use a non-zero length session ID when attempting
2320 stateless session resumption: this makes it possible to determine if
2321 a resumption has occurred immediately after receiving server hello
2322 (several places in OpenSSL subtly assume this) instead of later in
2326 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
2327 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
2328 fixes for a few places where the return code is not checked
2330 [Julia Lawall <julia@diku.dk>]
2332 *) Add --strict-warnings option to Configure script to include devteam
2333 warnings in other configurations.
2336 *) Add support for --libdir option and LIBDIR variable in makefiles. This
2337 makes it possible to install openssl libraries in locations which
2338 have names other than "lib", for example "/usr/lib64" which some
2340 [Steve Henson, based on patch from Jeremy Utley]
2342 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
2343 X690 8.9.12 and can produce some misleading textual output of OIDs.
2344 [Steve Henson, reported by Dan Kaminsky]
2346 *) Delete MD2 from algorithm tables. This follows the recommendation in
2347 several standards that it is not used in new applications due to
2348 several cryptographic weaknesses. For binary compatibility reasons
2349 the MD2 API is still compiled in by default.
2352 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
2356 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
2357 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
2359 [Guenter <lists@gknw.net>]
2361 *) Fix the server certificate chain building code to use X509_verify_cert(),
2362 it used to have an ad-hoc builder which was unable to cope with anything
2363 other than a simple chain.
2364 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
2366 *) Don't check self signed certificate signatures in X509_verify_cert()
2367 by default (a flag can override this): it just wastes time without
2368 adding any security. As a useful side effect self signed root CAs
2369 with non-FIPS digests are now usable in FIPS mode.
2372 *) In dtls1_process_out_of_seq_message() the check if the current message
2373 is already buffered was missing. For every new message was memory
2374 allocated, allowing an attacker to perform an denial of service attack
2375 with sending out of seq handshake messages until there is no memory
2376 left. Additionally every future messege was buffered, even if the
2377 sequence number made no sense and would be part of another handshake.
2378 So only messages with sequence numbers less than 10 in advance will be
2379 buffered. (CVE-2009-1378)
2380 [Robin Seggelmann, discovered by Daniel Mentz]
2382 *) Records are buffered if they arrive with a future epoch to be
2383 processed after finishing the corresponding handshake. There is
2384 currently no limitation to this buffer allowing an attacker to perform
2385 a DOS attack with sending records with future epochs until there is no
2386 memory left. This patch adds the pqueue_size() function to detemine
2387 the size of a buffer and limits the record buffer to 100 entries.
2389 [Robin Seggelmann, discovered by Daniel Mentz]
2391 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
2392 parent structure is freed. (CVE-2009-1379)
2395 *) Handle non-blocking I/O properly in SSL_shutdown() call.
2396 [Darryl Miles <darryl-mailinglists@netbauds.net>]
2399 [Ilya O. <vrghost@gmail.com>]
2401 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
2403 *) Disable renegotiation completely - this fixes a severe security
2404 problem (CVE-2009-3555) at the cost of breaking all
2405 renegotiation. Renegotiation can be re-enabled by setting
2406 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
2407 run-time. This is really not recommended unless you know what
2411 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
2413 *) Don't set val to NULL when freeing up structures, it is freed up by
2414 underlying code. If sizeof(void *) > sizeof(long) this can result in
2415 zeroing past the valid field. (CVE-2009-0789)
2416 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
2418 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
2419 checked correctly. This would allow some invalid signed attributes to
2420 appear to verify correctly. (CVE-2009-0591)
2421 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2423 *) Reject UniversalString and BMPString types with invalid lengths. This
2424 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
2425 a legal length. (CVE-2009-0590)
2428 *) Set S/MIME signing as the default purpose rather than setting it
2429 unconditionally. This allows applications to override it at the store
2433 *) Permit restricted recursion of ASN1 strings. This is needed in practice
2434 to handle some structures.
2437 *) Improve efficiency of mem_gets: don't search whole buffer each time
2439 [Jeremy Shapiro <jnshapir@us.ibm.com>]
2441 *) New -hex option for openssl rand.
2444 *) Print out UTF8String and NumericString when parsing ASN1.
2447 *) Support NumericString type for name components.
2450 *) Allow CC in the environment to override the automatically chosen
2451 compiler. Note that nothing is done to ensure flags work with the
2455 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
2457 *) Properly check EVP_VerifyFinal() and similar return values
2459 [Ben Laurie, Bodo Moeller, Google Security Team]
2461 *) Enable TLS extensions by default.
2464 *) Allow the CHIL engine to be loaded, whether the application is
2465 multithreaded or not. (This does not release the developer from the
2466 obligation to set up the dynamic locking callbacks.)
2467 [Sander Temme <sander@temme.net>]
2469 *) Use correct exit code if there is an error in dgst command.
2470 [Steve Henson; problem pointed out by Roland Dirlewanger]
2472 *) Tweak Configure so that you need to say "experimental-jpake" to enable
2473 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
2476 *) Add experimental JPAKE support, including demo authentication in
2477 s_client and s_server.
2480 *) Set the comparison function in v3_addr_canonize().
2481 [Rob Austein <sra@hactrn.net>]
2483 *) Add support for XMPP STARTTLS in s_client.
2484 [Philip Paeps <philip@freebsd.org>]
2486 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
2487 to ensure that even with this option, only ciphersuites in the
2488 server's preference list will be accepted. (Note that the option
2489 applies only when resuming a session, so the earlier behavior was
2490 just about the algorithm choice for symmetric cryptography.)
2493 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
2495 *) Fix NULL pointer dereference if a DTLS server received
2496 ChangeCipherSpec as first record (CVE-2009-1386).
2499 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
2500 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
2503 *) The fix in 0.9.8c that supposedly got rid of unsafe
2504 double-checked locking was incomplete for RSA blinding,
2505 addressing just one layer of what turns out to have been
2506 doubly unsafe triple-checked locking.
2508 So now fix this for real by retiring the MONT_HELPER macro
2509 in crypto/rsa/rsa_eay.c.
2511 [Bodo Moeller; problem pointed out by Marius Schilder]
2513 *) Various precautionary measures:
2515 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
2517 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
2518 (NB: This would require knowledge of the secret session ticket key
2519 to exploit, in which case you'd be SOL either way.)
2521 - Change bn_nist.c so that it will properly handle input BIGNUMs
2522 outside the expected range.
2524 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
2527 [Neel Mehta, Bodo Moeller]
2529 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
2530 the load fails. Useful for distros.
2531 [Ben Laurie and the FreeBSD team]
2533 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
2536 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
2539 *) Expand ENGINE to support engine supplied SSL client certificate functions.
2541 This work was sponsored by Logica.
2544 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
2545 keystores. Support for SSL/TLS client authentication too.
2546 Not compiled unless enable-capieng specified to Configure.
2548 This work was sponsored by Logica.
2551 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
2552 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
2553 attribute creation routines such as certifcate requests and PKCS#12
2557 Changes between 0.9.8g and 0.9.8h [28 May 2008]
2559 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
2560 handshake which could lead to a cilent crash as found using the
2561 Codenomicon TLS test suite (CVE-2008-1672)
2562 [Steve Henson, Mark Cox]
2564 *) Fix double free in TLS server name extensions which could lead to
2565 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2568 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2570 Clear the error queue to ensure that error entries left from
2571 older function calls do not interfere with the correct operation.
2572 [Lutz Jaenicke, Erik de Castro Lopo]
2574 *) Remove root CA certificates of commercial CAs:
2576 The OpenSSL project does not recommend any specific CA and does not
2577 have any policy with respect to including or excluding any CA.
2578 Therefore it does not make any sense to ship an arbitrary selection
2579 of root CA certificates with the OpenSSL software.
2582 *) RSA OAEP patches to fix two separate invalid memory reads.
2583 The first one involves inputs when 'lzero' is greater than
2584 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2585 before the beginning of from). The second one involves inputs where
2586 the 'db' section contains nothing but zeroes (there is a one-byte
2587 invalid read after the end of 'db').
2588 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2590 *) Partial backport from 0.9.9-dev:
2592 Introduce bn_mul_mont (dedicated Montgomery multiplication
2593 procedure) as a candidate for BIGNUM assembler implementation.
2594 While 0.9.9-dev uses assembler for various architectures, only
2595 x86_64 is available by default here in the 0.9.8 branch, and
2596 32-bit x86 is available through a compile-time setting.
2598 To try the 32-bit x86 assembler implementation, use Configure
2599 option "enable-montasm" (which exists only for this backport).
2601 As "enable-montasm" for 32-bit x86 disclaims code stability
2602 anyway, in this constellation we activate additional code
2603 backported from 0.9.9-dev for further performance improvements,
2604 namely BN_from_montgomery_word. (To enable this otherwise,
2605 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2607 [Andy Polyakov (backport partially by Bodo Moeller)]
2609 *) Add TLS session ticket callback. This allows an application to set
2610 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2611 values. This is useful for key rollover for example where several key
2612 sets may exist with different names.
2615 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2616 This was broken until now in 0.9.8 releases, such that the only way
2617 a registered ENGINE could be used (assuming it initialises
2618 successfully on the host) was to explicitly set it as the default
2619 for the relevant algorithms. This is in contradiction with 0.9.7
2620 behaviour and the documentation. With this fix, when an ENGINE is
2621 registered into a given algorithm's table of implementations, the
2622 'uptodate' flag is reset so that auto-discovery will be used next
2623 time a new context for that algorithm attempts to select an
2625 [Ian Lister (tweaked by Geoff Thorpe)]
2627 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2628 implemention in the following ways:
2630 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2633 Lack of BER streaming support means one pass streaming processing is
2634 only supported if data is detached: setting the streaming flag is
2635 ignored for embedded content.
2637 CMS support is disabled by default and must be explicitly enabled
2638 with the enable-cms configuration option.
2641 *) Update the GMP engine glue to do direct copies between BIGNUM and
2642 mpz_t when openssl and GMP use the same limb size. Otherwise the
2643 existing "conversion via a text string export" trick is still used.
2644 [Paul Sheer <paulsheer@gmail.com>]
2646 *) Zlib compression BIO. This is a filter BIO which compressed and
2647 uncompresses any data passed through it.
2650 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2651 RFC3394 compatible AES key wrapping.
2654 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2655 sets string data without copying. X509_ALGOR_set0() and
2656 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2657 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2658 from an X509_ATTRIBUTE structure optionally checking it occurs only
2659 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2663 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2664 to get the expected BN_FLG_CONSTTIME behavior.
2665 [Bodo Moeller (Google)]
2669 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2670 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2671 - added some more tests to do_tests.pl
2672 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2673 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2674 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2675 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2676 - various changes to netware.pl to enable gcc-cross builds on Win32
2678 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2679 - various changes to fix missing prototype warnings
2680 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2681 - added AES, WHIRLPOOL and CPUID assembler code to build files
2682 - added missing AES assembler make rules to mk1mf.pl
2683 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2684 [Guenter Knauf <eflash@gmx.net>]
2686 *) Implement certificate status request TLS extension defined in RFC3546.
2687 A client can set the appropriate parameters and receive the encoded
2688 OCSP response via a callback. A server can query the supplied parameters
2689 and set the encoded OCSP response in the callback. Add simplified examples
2690 to s_client and s_server.
2693 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2695 *) Fix various bugs:
2696 + Binary incompatibility of ssl_ctx_st structure
2697 + DTLS interoperation with non-compliant servers
2698 + Don't call get_session_cb() without proposed session
2699 + Fix ia64 assembler code
2700 [Andy Polyakov, Steve Henson]
2702 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2704 *) DTLS Handshake overhaul. There were longstanding issues with
2705 OpenSSL DTLS implementation, which were making it impossible for
2706 RFC 4347 compliant client to communicate with OpenSSL server.
2707 Unfortunately just fixing these incompatibilities would "cut off"
2708 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2709 server keeps tolerating non RFC compliant syntax. The opposite is
2710 not true, 0.9.8f client can not communicate with earlier server.
2711 This update even addresses CVE-2007-4995.
2714 *) Changes to avoid need for function casts in OpenSSL: some compilers
2715 (gcc 4.2 and later) reject their use.
2716 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2719 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2720 RFC4507bis. The encrypted ticket format is an encrypted encoded
2721 SSL_SESSION structure, that way new session features are automatically
2724 If a client application caches session in an SSL_SESSION structure
2725 support is transparent because tickets are now stored in the encoded
2728 The SSL_CTX structure automatically generates keys for ticket
2729 protection in servers so again support should be possible
2730 with no application modification.
2732 If a client or server wishes to disable RFC4507 support then the option
2733 SSL_OP_NO_TICKET can be set.
2735 Add a TLS extension debugging callback to allow the contents of any client
2736 or server extensions to be examined.
2738 This work was sponsored by Google.
2741 *) Add initial support for TLS extensions, specifically for the server_name
2742 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2743 have new members for a host name. The SSL data structure has an
2744 additional member SSL_CTX *initial_ctx so that new sessions can be
2745 stored in that context to allow for session resumption, even after the
2746 SSL has been switched to a new SSL_CTX in reaction to a client's
2747 server_name extension.
2749 New functions (subject to change):
2751 SSL_get_servername()
2752 SSL_get_servername_type()
2755 New CTRL codes and macros (subject to change):
2757 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2758 - SSL_CTX_set_tlsext_servername_callback()
2759 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2760 - SSL_CTX_set_tlsext_servername_arg()
2761 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2763 openssl s_client has a new '-servername ...' option.
2765 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2766 '-key2 ...', '-servername_fatal' (subject to change). This allows
2767 testing the HostName extension for a specific single host name ('-cert'
2768 and '-key' remain fallbacks for handshakes without HostName
2769 negotiation). If the unrecogninzed_name alert has to be sent, this by
2770 default is a warning; it becomes fatal with the '-servername_fatal'
2773 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2775 *) Add AES and SSE2 assembly language support to VC++ build.
2778 *) Mitigate attack on final subtraction in Montgomery reduction.
2781 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2782 (which previously caused an internal error).
2785 *) Squeeze another 10% out of IGE mode when in != out.
2788 *) AES IGE mode speedup.
2789 [Dean Gaudet (Google)]
2791 *) Add the Korean symmetric 128-bit cipher SEED (see
2792 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2793 add SEED ciphersuites from RFC 4162:
2795 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2796 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2797 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2798 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2800 To minimize changes between patchlevels in the OpenSSL 0.9.8
2801 series, SEED remains excluded from compilation unless OpenSSL
2802 is configured with 'enable-seed'.
2803 [KISA, Bodo Moeller]
2805 *) Mitigate branch prediction attacks, which can be practical if a
2806 single processor is shared, allowing a spy process to extract
2807 information. For detailed background information, see
2808 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2809 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2810 and Necessary Software Countermeasures"). The core of the change
2811 are new versions BN_div_no_branch() and
2812 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2813 respectively, which are slower, but avoid the security-relevant
2814 conditional branches. These are automatically called by BN_div()
2815 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2816 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2817 remove a conditional branch.
2819 BN_FLG_CONSTTIME is the new name for the previous
2820 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2821 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2822 in the exponent causes BN_mod_exp_mont() to use the alternative
2823 implementation in BN_mod_exp_mont_consttime().) The old name
2824 remains as a deprecated alias.
2826 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2827 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2828 constant-time implementations for more than just exponentiation.
2829 Here too the old name is kept as a deprecated alias.
2831 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2832 the BN_BLINDING structure gets an independent copy of the
2833 modulus. This means that the previous "BIGNUM *m" argument to
2834 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2835 essentially becomes "const BIGNUM *m", although we can't actually
2836 change this in the header file before 0.9.9. It allows
2837 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2838 enable BN_FLG_CONSTTIME.
2840 [Matthew D Wood (Intel Corp)]
2842 *) In the SSL/TLS server implementation, be strict about session ID
2843 context matching (which matters if an application uses a single
2844 external cache for different purposes). Previously,
2845 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2846 set. This did ensure strict client verification, but meant that,
2847 with applications using a single external cache for quite
2848 different requirements, clients could circumvent ciphersuite
2849 restrictions for a given session ID context by starting a session
2850 in a different context.
2853 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2854 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2855 authentication-only ciphersuites.
2858 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2859 not complete and could lead to a possible single byte overflow
2860 (CVE-2007-5135) [Ben Laurie]
2862 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2864 *) Since AES128 and AES256 (and similarly Camellia128 and
2865 Camellia256) share a single mask bit in the logic of
2866 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2867 kludge to work properly if AES128 is available and AES256 isn't
2868 (or if Camellia128 is available and Camellia256 isn't).
2871 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2872 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2873 When a point or a seed is encoded in a BIT STRING, we need to
2874 prevent the removal of trailing zero bits to get the proper DER
2875 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2876 of a NamedBitList, for which trailing 0 bits need to be removed.)
2879 *) Have SSL/TLS server implementation tolerate "mismatched" record
2880 protocol version while receiving ClientHello even if the
2881 ClientHello is fragmented. (The server can't insist on the
2882 particular protocol version it has chosen before the ServerHello
2883 message has informed the client about his choice.)
2886 *) Add RFC 3779 support.
2887 [Rob Austein for ARIN, Ben Laurie]
2889 *) Load error codes if they are not already present instead of using a
2890 static variable. This allows them to be cleanly unloaded and reloaded.
2891 Improve header file function name parsing.
2894 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2895 or CAPABILITY handshake as required by RFCs.
2898 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2900 *) Introduce limits to prevent malicious keys being able to
2901 cause a denial of service. (CVE-2006-2940)
2902 [Steve Henson, Bodo Moeller]
2904 *) Fix ASN.1 parsing of certain invalid structures that can result
2905 in a denial of service. (CVE-2006-2937) [Steve Henson]
2907 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2908 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2910 *) Fix SSL client code which could crash if connecting to a
2911 malicious SSLv2 server. (CVE-2006-4343)
2912 [Tavis Ormandy and Will Drewry, Google Security Team]
2914 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2915 match only those. Before that, "AES256-SHA" would be interpreted
2916 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2917 the same strength classification in 0.9.7h) as we currently only
2918 have a single AES bit in the ciphersuite description bitmap.
2919 That change, however, also applied to ciphersuite strings such as
2920 "RC4-MD5" that intentionally matched multiple ciphersuites --
2921 namely, SSL 2.0 ciphersuites in addition to the more common ones
2922 from SSL 3.0/TLS 1.0.
2924 So we change the selection algorithm again: Naming an explicit
2925 ciphersuite selects this one ciphersuite, and any other similar
2926 ciphersuite (same bitmap) from *other* protocol versions.
2927 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2928 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2930 Since SSL 2.0 does not have any ciphersuites for which the
2931 128/256 bit distinction would be relevant, this works for now.
2932 The proper fix will be to use different bits for AES128 and
2933 AES256, which would have avoided the problems from the beginning;
2934 however, bits are scarce, so we can only do this in a new release
2935 (not just a patchlevel) when we can change the SSL_CIPHER
2936 definition to split the single 'unsigned long mask' bitmap into
2937 multiple values to extend the available space.
2941 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2943 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2944 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2946 *) Add AES IGE and biIGE modes.
2949 *) Change the Unix randomness entropy gathering to use poll() when
2950 possible instead of select(), since the latter has some
2951 undesirable limitations.
2952 [Darryl Miles via Richard Levitte and Bodo Moeller]
2954 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2955 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2956 cannot be implicitly activated as part of, e.g., the "AES" alias.
2957 However, please upgrade to OpenSSL 0.9.9[-dev] for
2958 non-experimental use of the ECC ciphersuites to get TLS extension
2959 support, which is required for curve and point format negotiation
2960 to avoid potential handshake problems.
2963 *) Disable rogue ciphersuites:
2965 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2966 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2967 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2969 The latter two were purportedly from
2970 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2973 Also deactivate the remaining ciphersuites from
2974 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2975 unofficial, and the ID has long expired.
2978 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2979 dual-core machines) and other potential thread-safety issues.
2982 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2983 versions), which is now available for royalty-free use
2984 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2985 Also, add Camellia TLS ciphersuites from RFC 4132.
2987 To minimize changes between patchlevels in the OpenSSL 0.9.8
2988 series, Camellia remains excluded from compilation unless OpenSSL
2989 is configured with 'enable-camellia'.
2992 *) Disable the padding bug check when compression is in use. The padding
2993 bug check assumes the first packet is of even length, this is not
2994 necessarily true if compresssion is enabled and can result in false
2995 positives causing handshake failure. The actual bug test is ancient
2996 code so it is hoped that implementations will either have fixed it by
2997 now or any which still have the bug do not support compression.
3000 Changes between 0.9.8a and 0.9.8b [04 May 2006]
3002 *) When applying a cipher rule check to see if string match is an explicit
3003 cipher suite and only match that one cipher suite if it is.
3006 *) Link in manifests for VC++ if needed.
3007 [Austin Ziegler <halostatue@gmail.com>]
3009 *) Update support for ECC-based TLS ciphersuites according to
3010 draft-ietf-tls-ecc-12.txt with proposed changes (but without
3011 TLS extensions, which are supported starting with the 0.9.9
3012 branch, not in the OpenSSL 0.9.8 branch).
3015 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
3016 opaque EVP_CIPHER_CTX handling.
3019 *) Fixes and enhancements to zlib compression code. We now only use
3020 "zlib1.dll" and use the default __cdecl calling convention on Win32
3021 to conform with the standards mentioned here:
3022 http://www.zlib.net/DLL_FAQ.txt
3023 Static zlib linking now works on Windows and the new --with-zlib-include
3024 --with-zlib-lib options to Configure can be used to supply the location
3025 of the headers and library. Gracefully handle case where zlib library
3029 *) Several fixes and enhancements to the OID generation code. The old code
3030 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
3031 handle numbers larger than ULONG_MAX, truncated printing and had a
3032 non standard OBJ_obj2txt() behaviour.
3035 *) Add support for building of engines under engine/ as shared libraries
3036 under VC++ build system.
3039 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
3040 Hopefully, we will not see any false combination of paths any more.
3043 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
3045 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3046 (part of SSL_OP_ALL). This option used to disable the
3047 countermeasure against man-in-the-middle protocol-version
3048 rollback in the SSL 2.0 server implementation, which is a bad
3049 idea. (CVE-2005-2969)
3051 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3052 for Information Security, National Institute of Advanced Industrial
3053 Science and Technology [AIST], Japan)]
3055 *) Add two function to clear and return the verify parameter flags.
3058 *) Keep cipherlists sorted in the source instead of sorting them at
3059 runtime, thus removing the need for a lock.
3062 *) Avoid some small subgroup attacks in Diffie-Hellman.
3063 [Nick Mathewson and Ben Laurie]
3065 *) Add functions for well-known primes.
3068 *) Extended Windows CE support.
3069 [Satoshi Nakamura and Andy Polyakov]
3071 *) Initialize SSL_METHOD structures at compile time instead of during
3072 runtime, thus removing the need for a lock.
3075 *) Make PKCS7_decrypt() work even if no certificate is supplied by
3076 attempting to decrypt each encrypted key in turn. Add support to
3080 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
3082 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
3085 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
3088 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
3089 key into the same file any more.
3092 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
3095 *) Add -utf8 command line and config file option to 'ca'.
3096 [Stefan <stf@udoma.org]
3098 *) Removed the macro des_crypt(), as it seems to conflict with some
3099 libraries. Use DES_crypt().
3102 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
3103 involves renaming the source and generated shared-libs for
3104 both. The engines will accept the corrected or legacy ids
3105 ('ncipher' and '4758_cca' respectively) when binding. NB,
3106 this only applies when building 'shared'.
3107 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
3109 *) Add attribute functions to EVP_PKEY structure. Modify
3110 PKCS12_create() to recognize a CSP name attribute and
3111 use it. Make -CSP option work again in pkcs12 utility.
3114 *) Add new functionality to the bn blinding code:
3115 - automatic re-creation of the BN_BLINDING parameters after
3116 a fixed number of uses (currently 32)
3117 - add new function for parameter creation
3118 - introduce flags to control the update behaviour of the
3119 BN_BLINDING parameters
3120 - hide BN_BLINDING structure
3121 Add a second BN_BLINDING slot to the RSA structure to improve
3122 performance when a single RSA object is shared among several
3126 *) Add support for DTLS.
3127 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
3129 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
3130 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
3133 *) Remove buggy and incompletet DH cert support from
3134 ssl/ssl_rsa.c and ssl/s3_both.c
3137 *) Use SHA-1 instead of MD5 as the default digest algorithm for
3138 the apps/openssl applications.
3141 *) Compile clean with "-Wall -Wmissing-prototypes
3142 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
3143 DEBUG_SAFESTACK must also be set.
3146 *) Change ./Configure so that certain algorithms can be disabled by default.
3147 The new counterpiece to "no-xxx" is "enable-xxx".
3149 The patented RC5 and MDC2 algorithms will now be disabled unless
3150 "enable-rc5" and "enable-mdc2", respectively, are specified.
3152 (IDEA remains enabled despite being patented. This is because IDEA
3153 is frequently required for interoperability, and there is no license
3154 fee for non-commercial use. As before, "no-idea" can be used to
3155 avoid this algorithm.)
3159 *) Add processing of proxy certificates (see RFC 3820). This work was
3160 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
3161 EGEE (Enabling Grids for E-science in Europe).
3164 *) RC4 performance overhaul on modern architectures/implementations, such
3165 as Intel P4, IA-64 and AMD64.
3168 *) New utility extract-section.pl. This can be used specify an alternative
3169 section number in a pod file instead of having to treat each file as
3170 a separate case in Makefile. This can be done by adding two lines to the
3173 =for comment openssl_section:XXX
3175 The blank line is mandatory.
3179 *) New arguments -certform, -keyform and -pass for s_client and s_server
3180 to allow alternative format key and certificate files and passphrase
3184 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
3185 update associated structures and add various utility functions.
3187 Add new policy related verify parameters, include policy checking in
3188 standard verify code. Enhance 'smime' application with extra parameters
3189 to support policy checking and print out.
3192 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
3193 Nehemiah processors. These extensions support AES encryption in hardware
3194 as well as RNG (though RNG support is currently disabled).
3195 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
3197 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
3200 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
3201 [Andy Polyakov and a number of other people]
3203 *) Improved PowerPC platform support. Most notably BIGNUM assembler
3204 implementation contributed by IBM.
3205 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
3207 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
3208 exponent rather than 'unsigned long'. There is a corresponding change to
3209 the new 'rsa_keygen' element of the RSA_METHOD structure.
3210 [Jelte Jansen, Geoff Thorpe]
3212 *) Functionality for creating the initial serial number file is now
3213 moved from CA.pl to the 'ca' utility with a new option -create_serial.
3215 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
3216 number file to 1, which is bound to cause problems. To avoid
3217 the problems while respecting compatibility between different 0.9.7
3218 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
3219 CA.pl for serial number initialization. With the new release 0.9.8,
3220 we can fix the problem directly in the 'ca' utility.)
3223 *) Reduced header interdepencies by declaring more opaque objects in
3224 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
3225 give fewer recursive includes, which could break lazy source code - so
3226 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
3227 developers should define this symbol when building and using openssl to
3228 ensure they track the recommended behaviour, interfaces, [etc], but
3229 backwards-compatible behaviour prevails when this isn't defined.
3232 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
3235 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
3236 This will generate a random key of the appropriate length based on the
3237 cipher context. The EVP_CIPHER can provide its own random key generation
3238 routine to support keys of a specific form. This is used in the des and
3239 3des routines to generate a key of the correct parity. Update S/MIME
3240 code to use new functions and hence generate correct parity DES keys.
3241 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
3242 valid (weak or incorrect parity).
3245 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
3246 as looking them up. This is useful when the verified structure may contain
3247 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
3248 present unless the new PKCS7_NO_CRL flag is asserted.
3251 *) Extend ASN1 oid configuration module. It now additionally accepts the
3254 shortName = some long name, 1.2.3.4
3257 *) Reimplemented the BN_CTX implementation. There is now no more static
3258 limitation on the number of variables it can handle nor the depth of the
3259 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
3260 information can now expand as required, and rather than having a single
3261 static array of bignums, BN_CTX now uses a linked-list of such arrays
3262 allowing it to expand on demand whilst maintaining the usefulness of
3263 BN_CTX's "bundling".
3266 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
3267 to allow all RSA operations to function using a single BN_CTX.
3270 *) Preliminary support for certificate policy evaluation and checking. This
3271 is initially intended to pass the tests outlined in "Conformance Testing
3272 of Relying Party Client Certificate Path Processing Logic" v1.07.
3275 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
3276 remained unused and not that useful. A variety of other little bignum
3277 tweaks and fixes have also been made continuing on from the audit (see
3281 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
3282 associated ASN1, EVP and SSL functions and old ASN1 macros.
3285 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
3286 and this should never fail. So the return value from the use of
3287 BN_set_word() (which can fail due to needless expansion) is now deprecated;
3288 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
3291 *) BN_CTX_get() should return zero-valued bignums, providing the same
3292 initialised value as BN_new().
3293 [Geoff Thorpe, suggested by Ulf Möller]
3295 *) Support for inhibitAnyPolicy certificate extension.
3298 *) An audit of the BIGNUM code is underway, for which debugging code is
3299 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
3300 is considered valid when processing BIGNUMs, and causes execution to
3301 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
3302 further steps are taken to deliberately pollute unused data in BIGNUM
3303 structures to try and expose faulty code further on. For now, openssl will
3304 (in its default mode of operation) continue to tolerate the inconsistent
3305 forms that it has tolerated in the past, but authors and packagers should
3306 consider trying openssl and their own applications when compiled with
3307 these debugging symbols defined. It will help highlight potential bugs in
3308 their own code, and will improve the test coverage for OpenSSL itself. At
3309 some point, these tighter rules will become openssl's default to improve
3310 maintainability, though the assert()s and other overheads will remain only
3311 in debugging configurations. See bn.h for more details.
3312 [Geoff Thorpe, Nils Larsch, Ulf Möller]
3314 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
3315 that can only be obtained through BN_CTX_new() (which implicitly
3316 initialises it). The presence of this function only made it possible
3317 to overwrite an existing structure (and cause memory leaks).
3320 *) Because of the callback-based approach for implementing LHASH as a
3321 template type, lh_insert() adds opaque objects to hash-tables and
3322 lh_doall() or lh_doall_arg() are typically used with a destructor callback
3323 to clean up those corresponding objects before destroying the hash table
3324 (and losing the object pointers). So some over-zealous constifications in
3325 LHASH have been relaxed so that lh_insert() does not take (nor store) the
3326 objects as "const" and the lh_doall[_arg] callback wrappers are not
3327 prototyped to have "const" restrictions on the object pointers they are
3328 given (and so aren't required to cast them away any more).
3331 *) The tmdiff.h API was so ugly and minimal that our own timing utility
3332 (speed) prefers to use its own implementation. The two implementations
3333 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
3334 its object type properly exposed (MS_TM) instead of casting to/from "char
3335 *". This may still change yet if someone realises MS_TM and "ms_time_***"
3336 aren't necessarily the greatest nomenclatures - but this is what was used
3337 internally to the implementation so I've used that for now.
3340 *) Ensure that deprecated functions do not get compiled when
3341 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
3342 the self-tests were still using deprecated key-generation functions so
3343 these have been updated also.
3346 *) Reorganise PKCS#7 code to separate the digest location functionality
3347 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
3348 New function PKCS7_set_digest() to set the digest type for PKCS#7
3349 digestedData type. Add additional code to correctly generate the
3350 digestedData type and add support for this type in PKCS7 initialization
3354 *) New function PKCS7_set0_type_other() this initializes a PKCS7
3355 structure of type "other".
3358 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
3359 sure the loop does correctly stop and breaking ("division by zero")
3360 modulus operations are not performed. The (pre-generated) prime
3361 table crypto/bn/bn_prime.h was already correct, but it could not be
3362 re-generated on some platforms because of the "division by zero"
3363 situation in the script.
3364 [Ralf S. Engelschall]
3366 *) Update support for ECC-based TLS ciphersuites according to
3367 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
3368 SHA-1 now is only used for "small" curves (where the
3369 representation of a field element takes up to 24 bytes); for
3370 larger curves, the field element resulting from ECDH is directly
3371 used as premaster secret.
3372 [Douglas Stebila (Sun Microsystems Laboratories)]
3374 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
3375 curve secp160r1 to the tests.
3376 [Douglas Stebila (Sun Microsystems Laboratories)]
3378 *) Add the possibility to load symbols globally with DSO.
3379 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
3381 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
3382 control of the error stack.
3385 *) Add support for STORE in ENGINE.
3388 *) Add the STORE type. The intention is to provide a common interface
3389 to certificate and key stores, be they simple file-based stores, or
3390 HSM-type store, or LDAP stores, or...
3391 NOTE: The code is currently UNTESTED and isn't really used anywhere.
3394 *) Add a generic structure called OPENSSL_ITEM. This can be used to
3395 pass a list of arguments to any function as well as provide a way
3396 for a function to pass data back to the caller.
3399 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
3400 works like BUF_strdup() but can be used to duplicate a portion of
3401 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
3405 *) Add the function sk_find_ex() which works like sk_find(), but will
3406 return an index to an element even if an exact match couldn't be
3407 found. The index is guaranteed to point at the element where the
3408 searched-for key would be inserted to preserve sorting order.
3411 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
3412 takes an extra flags argument for optional functionality. Currently,
3413 the following flags are defined:
3415 OBJ_BSEARCH_VALUE_ON_NOMATCH
3416 This one gets OBJ_bsearch_ex() to return a pointer to the first
3417 element where the comparing function returns a negative or zero
3420 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
3421 This one gets OBJ_bsearch_ex() to return a pointer to the first
3422 element where the comparing function returns zero. This is useful
3423 if there are more than one element where the comparing function
3427 *) Make it possible to create self-signed certificates with 'openssl ca'
3428 in such a way that the self-signed certificate becomes part of the
3429 CA database and uses the same mechanisms for serial number generation
3430 as all other certificate signing. The new flag '-selfsign' enables
3431 this functionality. Adapt CA.sh and CA.pl.in.
3434 *) Add functionality to check the public key of a certificate request
3435 against a given private. This is useful to check that a certificate
3436 request can be signed by that key (self-signing).
3439 *) Make it possible to have multiple active certificates with the same
3440 subject in the CA index file. This is done only if the keyword
3441 'unique_subject' is set to 'no' in the main CA section (default
3442 if 'CA_default') of the configuration file. The value is saved
3443 with the database itself in a separate index attribute file,
3444 named like the index file with '.attr' appended to the name.
3447 *) Generate muti valued AVAs using '+' notation in config files for
3451 *) Support for nameConstraints certificate extension.
3454 *) Support for policyConstraints certificate extension.
3457 *) Support for policyMappings certificate extension.
3460 *) Make sure the default DSA_METHOD implementation only uses its
3461 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
3462 and change its own handlers to be NULL so as to remove unnecessary
3463 indirection. This lets alternative implementations fallback to the
3464 default implementation more easily.
3467 *) Support for directoryName in GeneralName related extensions
3471 *) Make it possible to link applications using Makefile.shared.
3472 Make that possible even when linking against static libraries!
3475 *) Support for single pass processing for S/MIME signing. This now
3476 means that S/MIME signing can be done from a pipe, in addition
3477 cleartext signing (multipart/signed type) is effectively streaming
3478 and the signed data does not need to be all held in memory.
3480 This is done with a new flag PKCS7_STREAM. When this flag is set
3481 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
3482 is done after the data is output (and digests calculated) in
3483 SMIME_write_PKCS7().
3486 *) Add full support for -rpath/-R, both in shared libraries and
3487 applications, at least on the platforms where it's known how
3491 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
3492 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
3493 will now compute a table of multiples of the generator that
3494 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
3495 faster (notably in the case of a single point multiplication,
3496 scalar * generator).
3497 [Nils Larsch, Bodo Moeller]
3499 *) IPv6 support for certificate extensions. The various extensions
3500 which use the IP:a.b.c.d can now take IPv6 addresses using the
3501 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
3505 *) Added an ENGINE that implements RSA by performing private key
3506 exponentiations with the GMP library. The conversions to and from
3507 GMP's mpz_t format aren't optimised nor are any montgomery forms
3508 cached, and on x86 it appears OpenSSL's own performance has caught up.
3509 However there are likely to be other architectures where GMP could
3510 provide a boost. This ENGINE is not built in by default, but it can be
3511 specified at Configure time and should be accompanied by the necessary
3512 linker additions, eg;
3513 ./config -DOPENSSL_USE_GMP -lgmp
3516 *) "openssl engine" will not display ENGINE/DSO load failure errors when
3517 testing availability of engines with "-t" - the old behaviour is
3518 produced by increasing the feature's verbosity with "-tt".
3521 *) ECDSA routines: under certain error conditions uninitialized BN objects
3522 could be freed. Solution: make sure initialization is performed early
3523 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
3527 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
3528 and DH_METHOD (eg. by ENGINE implementations) to override the normal
3529 software implementations. For DSA and DH, parameter generation can
3530 also be overriden by providing the appropriate method callbacks.
3533 *) Change the "progress" mechanism used in key-generation and
3534 primality testing to functions that take a new BN_GENCB pointer in
3535 place of callback/argument pairs. The new API functions have "_ex"
3536 postfixes and the older functions are reimplemented as wrappers for
3537 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
3538 declarations of the old functions to help (graceful) attempts to
3539 migrate to the new functions. Also, the new key-generation API
3540 functions operate on a caller-supplied key-structure and return
3541 success/failure rather than returning a key or NULL - this is to
3542 help make "keygen" another member function of RSA_METHOD etc.
3544 Example for using the new callback interface:
3546 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
3550 BN_GENCB_set(&my_cb, my_callback, my_arg);
3552 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
3553 /* For the meaning of a, b in calls to my_callback(), see the
3554 * documentation of the function that calls the callback.
3555 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
3556 * my_callback should return 1 if it wants BN_is_prime_ex()
3557 * to continue, or 0 to stop.
3562 *) Change the ZLIB compression method to be stateful, and make it
3563 available to TLS with the number defined in
3564 draft-ietf-tls-compression-04.txt.
3567 *) Add the ASN.1 structures and functions for CertificatePair, which
3568 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3570 CertificatePair ::= SEQUENCE {
3571 forward [0] Certificate OPTIONAL,
3572 reverse [1] Certificate OPTIONAL,
3573 -- at least one of the pair shall be present -- }
3575 Also implement the PEM functions to read and write certificate
3576 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3578 This needed to be defined, mostly for the sake of the LDAP
3579 attribute crossCertificatePair, but may prove useful elsewhere as
3583 *) Make it possible to inhibit symlinking of shared libraries in
3584 Makefile.shared, for Cygwin's sake.
3587 *) Extend the BIGNUM API by creating a function
3588 void BN_set_negative(BIGNUM *a, int neg);
3589 and a macro that behave like
3590 int BN_is_negative(const BIGNUM *a);
3592 to avoid the need to access 'a->neg' directly in applications.
3595 *) Implement fast modular reduction for pseudo-Mersenne primes
3596 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3597 EC_GROUP_new_curve_GFp() will now automatically use this
3599 [Nils Larsch <nla@trustcenter.de>]
3601 *) Add new lock type (CRYPTO_LOCK_BN).
3604 *) Change the ENGINE framework to automatically load engines
3605 dynamically from specific directories unless they could be
3606 found to already be built in or loaded. Move all the
3607 current engines except for the cryptodev one to a new
3609 The engines in engines/ are built as shared libraries if
3610 the "shared" options was given to ./Configure or ./config.
3611 Otherwise, they are inserted in libcrypto.a.
3612 /usr/local/ssl/engines is the default directory for dynamic
3613 engines, but that can be overriden at configure time through
3614 the usual use of --prefix and/or --openssldir, and at run
3615 time with the environment variable OPENSSL_ENGINES.
3616 [Geoff Thorpe and Richard Levitte]
3618 *) Add Makefile.shared, a helper makefile to build shared
3619 libraries. Addapt Makefile.org.
3622 *) Add version info to Win32 DLLs.
3623 [Peter 'Luna' Runestig" <peter@runestig.com>]
3625 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3626 can be added using this API to created arbitrary PKCS#12
3627 files while avoiding the low level API.
3629 New options to PKCS12_create(), key or cert can be NULL and
3630 will then be omitted from the output file. The encryption
3631 algorithm NIDs can be set to -1 for no encryption, the mac
3632 iteration count can be set to 0 to omit the mac.
3634 Enhance pkcs12 utility by making the -nokeys and -nocerts
3635 options work when creating a PKCS#12 file. New option -nomac
3636 to omit the mac, NONE can be set for an encryption algorithm.
3637 New code is modified to use the enhanced PKCS12_create()
3638 instead of the low level API.
3641 *) Extend ASN1 encoder to support indefinite length constructed
3642 encoding. This can output sequences tags and octet strings in
3643 this form. Modify pk7_asn1.c to support indefinite length
3644 encoding. This is experimental and needs additional code to
3645 be useful, such as an ASN1 bio and some enhanced streaming
3648 Extend template encode functionality so that tagging is passed
3649 down to the template encoder.
3652 *) Let 'openssl req' fail if an argument to '-newkey' is not
3653 recognized instead of using RSA as a default.
3656 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3657 As these are not official, they are not included in "ALL";
3658 the "ECCdraft" ciphersuite group alias can be used to select them.
3659 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3661 *) Add ECDH engine support.
3662 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3664 *) Add ECDH in new directory crypto/ecdh/.
3665 [Douglas Stebila (Sun Microsystems Laboratories)]
3667 *) Let BN_rand_range() abort with an error after 100 iterations
3668 without success (which indicates a broken PRNG).
3671 *) Change BN_mod_sqrt() so that it verifies that the input value
3672 is really the square of the return value. (Previously,
3673 BN_mod_sqrt would show GIGO behaviour.)
3676 *) Add named elliptic curves over binary fields from X9.62, SECG,
3677 and WAP/WTLS; add OIDs that were still missing.
3679 [Sheueling Chang Shantz and Douglas Stebila
3680 (Sun Microsystems Laboratories)]
3682 *) Extend the EC library for elliptic curves over binary fields
3683 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3686 EC_GF2m_simple_method
3690 EC_GROUP_new_curve_GF2m
3691 EC_GROUP_set_curve_GF2m
3692 EC_GROUP_get_curve_GF2m
3693 EC_POINT_set_affine_coordinates_GF2m
3694 EC_POINT_get_affine_coordinates_GF2m
3695 EC_POINT_set_compressed_coordinates_GF2m
3697 Point compression for binary fields is disabled by default for
3698 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3701 As binary polynomials are represented as BIGNUMs, various members
3702 of the EC_GROUP and EC_POINT data structures can be shared
3703 between the implementations for prime fields and binary fields;
3704 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3705 are essentially identical to their ..._GFp counterparts.
3706 (For simplicity, the '..._GFp' prefix has been dropped from
3707 various internal method names.)
3709 An internal 'field_div' method (similar to 'field_mul' and
3710 'field_sqr') has been added; this is used only for binary fields.
3712 [Sheueling Chang Shantz and Douglas Stebila
3713 (Sun Microsystems Laboratories)]
3715 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3716 through methods ('mul', 'precompute_mult').
3718 The generic implementations (now internally called 'ec_wNAF_mul'
3719 and 'ec_wNAF_precomputed_mult') remain the default if these
3720 methods are undefined.
3722 [Sheueling Chang Shantz and Douglas Stebila
3723 (Sun Microsystems Laboratories)]
3725 *) New function EC_GROUP_get_degree, which is defined through
3726 EC_METHOD. For curves over prime fields, this returns the bit
3727 length of the modulus.
3729 [Sheueling Chang Shantz and Douglas Stebila
3730 (Sun Microsystems Laboratories)]
3732 *) New functions EC_GROUP_dup, EC_POINT_dup.
3733 (These simply call ..._new and ..._copy).
3735 [Sheueling Chang Shantz and Douglas Stebila
3736 (Sun Microsystems Laboratories)]
3738 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3739 Polynomials are represented as BIGNUMs (where the sign bit is not
3740 used) in the following functions [macros]:
3743 BN_GF2m_sub [= BN_GF2m_add]
3744 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3745 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3746 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3748 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3749 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3750 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3751 BN_GF2m_cmp [= BN_ucmp]
3753 (Note that only the 'mod' functions are actually for fields GF(2^m).
3754 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3756 For some functions, an the irreducible polynomial defining a
3757 field can be given as an 'unsigned int[]' with strictly
3758 decreasing elements giving the indices of those bits that are set;
3759 i.e., p[] represents the polynomial
3760 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3762 p[0] > p[1] > ... > p[k] = 0.
3763 This applies to the following functions:
3768 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3769 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3771 BN_GF2m_mod_sqrt_arr
3772 BN_GF2m_mod_solve_quad_arr
3776 Conversion can be performed by the following functions:
3781 bntest.c has additional tests for binary polynomial arithmetic.
3783 Two implementations for BN_GF2m_mod_div() are available.
3784 The default algorithm simply uses BN_GF2m_mod_inv() and
3785 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3786 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3787 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3789 [Sheueling Chang Shantz and Douglas Stebila
3790 (Sun Microsystems Laboratories)]
3792 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3793 functionality is disabled at compile-time.
3794 [Douglas Stebila <douglas.stebila@sun.com>]
3796 *) Change default behaviour of 'openssl asn1parse' so that more
3797 information is visible when viewing, e.g., a certificate:
3799 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3800 mode the content of non-printable OCTET STRINGs is output in a
3801 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3802 avoid the appearance of a printable string.
3803 [Nils Larsch <nla@trustcenter.de>]
3805 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3807 EC_GROUP_set_asn1_flag()
3808 EC_GROUP_get_asn1_flag()
3809 EC_GROUP_set_point_conversion_form()
3810 EC_GROUP_get_point_conversion_form()
3811 These control ASN1 encoding details:
3812 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3813 has been set to OPENSSL_EC_NAMED_CURVE.
3814 - Points are encoded in uncompressed form by default; options for
3815 asn1_for are as for point2oct, namely
3816 POINT_CONVERSION_COMPRESSED
3817 POINT_CONVERSION_UNCOMPRESSED
3818 POINT_CONVERSION_HYBRID
3820 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3823 EC_GROUP_get0_seed()
3824 EC_GROUP_get_seed_len()
3825 This is used only for ASN1 purposes (so far).
3826 [Nils Larsch <nla@trustcenter.de>]
3828 *) Add 'field_type' member to EC_METHOD, which holds the NID
3829 of the appropriate field type OID. The new function
3830 EC_METHOD_get_field_type() returns this value.
3831 [Nils Larsch <nla@trustcenter.de>]
3836 EC_POINT_point2hex()
3837 EC_POINT_hex2point()
3838 providing useful interfaces to EC_POINT_point2oct() and
3839 EC_POINT_oct2point().
3840 [Nils Larsch <nla@trustcenter.de>]
3842 *) Change internals of the EC library so that the functions
3843 EC_GROUP_set_generator()
3844 EC_GROUP_get_generator()
3845 EC_GROUP_get_order()
3846 EC_GROUP_get_cofactor()
3847 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3848 to methods, which would lead to unnecessary code duplication when
3849 adding different types of curves.
3850 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3852 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3853 arithmetic, and such that modified wNAFs are generated
3854 (which avoid length expansion in many cases).
3857 *) Add a function EC_GROUP_check_discriminant() (defined via
3858 EC_METHOD) that verifies that the curve discriminant is non-zero.
3860 Add a function EC_GROUP_check() that makes some sanity tests
3861 on a EC_GROUP, its generator and order. This includes
3862 EC_GROUP_check_discriminant().
3863 [Nils Larsch <nla@trustcenter.de>]
3865 *) Add ECDSA in new directory crypto/ecdsa/.
3867 Add applications 'openssl ecparam' and 'openssl ecdsa'
3868 (these are based on 'openssl dsaparam' and 'openssl dsa').
3870 ECDSA support is also included in various other files across the
3871 library. Most notably,
3872 - 'openssl req' now has a '-newkey ecdsa:file' option;
3873 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3874 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3875 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3876 them suitable for ECDSA where domain parameters must be
3877 extracted before the specific public key;
3878 - ECDSA engine support has been added.
3879 [Nils Larsch <nla@trustcenter.de>]
3881 *) Include some named elliptic curves, and add OIDs from X9.62,
3882 SECG, and WAP/WTLS. Each curve can be obtained from the new
3884 EC_GROUP_new_by_curve_name(),
3885 and the list of available named curves can be obtained with
3886 EC_get_builtin_curves().
3887 Also add a 'curve_name' member to EC_GROUP objects, which can be
3889 EC_GROUP_set_curve_name()
3890 EC_GROUP_get_curve_name()
3891 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3893 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3894 was actually never needed) and in BN_mul(). The removal in BN_mul()
3895 required a small change in bn_mul_part_recursive() and the addition
3896 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3897 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3898 bn_sub_words() and bn_add_words() except they take arrays with
3902 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3904 *) Cleanse PEM buffers before freeing them since they may contain
3906 [Benjamin Bennett <ben@psc.edu>]
3908 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3909 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3910 authentication-only ciphersuites.
3913 *) Since AES128 and AES256 share a single mask bit in the logic of
3914 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3915 kludge to work properly if AES128 is available and AES256 isn't.
3918 *) Expand security boundary to match 1.1.1 module.
3921 *) Remove redundant features: hash file source, editing of test vectors
3922 modify fipsld to use external fips_premain.c signature.
3925 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3926 run algorithm test programs.
3929 *) Make algorithm test programs more tolerant of whitespace.
3932 *) Have SSL/TLS server implementation tolerate "mismatched" record
3933 protocol version while receiving ClientHello even if the
3934 ClientHello is fragmented. (The server can't insist on the
3935 particular protocol version it has chosen before the ServerHello
3936 message has informed the client about his choice.)
3939 *) Load error codes if they are not already present instead of using a
3940 static variable. This allows them to be cleanly unloaded and reloaded.
3943 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3945 *) Introduce limits to prevent malicious keys being able to
3946 cause a denial of service. (CVE-2006-2940)
3947 [Steve Henson, Bodo Moeller]
3949 *) Fix ASN.1 parsing of certain invalid structures that can result
3950 in a denial of service. (CVE-2006-2937) [Steve Henson]
3952 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3953 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3955 *) Fix SSL client code which could crash if connecting to a
3956 malicious SSLv2 server. (CVE-2006-4343)
3957 [Tavis Ormandy and Will Drewry, Google Security Team]
3959 *) Change ciphersuite string processing so that an explicit
3960 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3961 will no longer include "AES128-SHA"), and any other similar
3962 ciphersuite (same bitmap) from *other* protocol versions (so that
3963 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3964 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3965 changes from 0.9.8b and 0.9.8d.
3968 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3970 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3971 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3973 *) Change the Unix randomness entropy gathering to use poll() when
3974 possible instead of select(), since the latter has some
3975 undesirable limitations.
3976 [Darryl Miles via Richard Levitte and Bodo Moeller]
3978 *) Disable rogue ciphersuites:
3980 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3981 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3982 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3984 The latter two were purportedly from
3985 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3988 Also deactive the remaining ciphersuites from
3989 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3990 unofficial, and the ID has long expired.
3993 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3994 dual-core machines) and other potential thread-safety issues.
3997 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3999 *) Adapt fipsld and the build system to link against the validated FIPS
4000 module in FIPS mode.
4003 *) Fixes for VC++ 2005 build under Windows.
4006 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
4007 from a Windows bash shell such as MSYS. It is autodetected from the
4008 "config" script when run from a VC++ environment. Modify standard VC++
4009 build to use fipscanister.o from the GNU make build.
4012 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
4014 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
4015 The value now differs depending on if you build for FIPS or not.
4016 BEWARE! A program linked with a shared FIPSed libcrypto can't be
4017 safely run with a non-FIPSed libcrypto, as it may crash because of
4018 the difference induced by this change.
4021 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
4023 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4024 (part of SSL_OP_ALL). This option used to disable the
4025 countermeasure against man-in-the-middle protocol-version
4026 rollback in the SSL 2.0 server implementation, which is a bad
4027 idea. (CVE-2005-2969)
4029 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4030 for Information Security, National Institute of Advanced Industrial
4031 Science and Technology [AIST], Japan)]
4033 *) Minimal support for X9.31 signatures and PSS padding modes. This is
4034 mainly for FIPS compliance and not fully integrated at this stage.
4037 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
4038 the exponentiation using a fixed-length exponent. (Otherwise,
4039 the information leaked through timing could expose the secret key
4040 after many signatures; cf. Bleichenbacher's attack on DSA with
4044 *) Make a new fixed-window mod_exp implementation the default for
4045 RSA, DSA, and DH private-key operations so that the sequence of
4046 squares and multiplies and the memory access pattern are
4047 independent of the particular secret key. This will mitigate
4048 cache-timing and potential related attacks.
4050 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
4051 and this is automatically used by BN_mod_exp_mont() if the new flag
4052 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
4053 will use this BN flag for private exponents unless the flag
4054 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
4055 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
4057 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
4059 *) Change the client implementation for SSLv23_method() and
4060 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
4061 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
4062 (Previously, the SSL 2.0 backwards compatible Client Hello
4063 message format would be used even with SSL_OP_NO_SSLv2.)
4066 *) Add support for smime-type MIME parameter in S/MIME messages which some
4070 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
4071 a threadsafe manner. Modify rsa code to use new function and add calls
4072 to dsa and dh code (which had race conditions before).
4075 *) Include the fixed error library code in the C error file definitions
4076 instead of fixing them up at runtime. This keeps the error code
4077 structures constant.
4080 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
4082 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
4085 *) Fixes for newer kerberos headers. NB: the casts are needed because
4086 the 'length' field is signed on one version and unsigned on another
4087 with no (?) obvious way to tell the difference, without these VC++
4088 complains. Also the "definition" of FAR (blank) is no longer included
4089 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
4090 some needed definitions.
4093 *) Undo Cygwin change.
4096 *) Added support for proxy certificates according to RFC 3820.
4097 Because they may be a security thread to unaware applications,
4098 they must be explicitely allowed in run-time. See
4099 docs/HOWTO/proxy_certificates.txt for further information.
4102 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
4104 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
4105 server and client random values. Previously
4106 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
4107 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
4109 This change has negligible security impact because:
4111 1. Server and client random values still have 24 bytes of pseudo random
4114 2. Server and client random values are sent in the clear in the initial
4117 3. The master secret is derived using the premaster secret (48 bytes in
4118 size for static RSA ciphersuites) as well as client server and random
4121 The OpenSSL team would like to thank the UK NISCC for bringing this issue
4124 [Stephen Henson, reported by UK NISCC]
4126 *) Use Windows randomness collection on Cygwin.
4129 *) Fix hang in EGD/PRNGD query when communication socket is closed
4130 prematurely by EGD/PRNGD.
4131 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
4133 *) Prompt for pass phrases when appropriate for PKCS12 input format.
4136 *) Back-port of selected performance improvements from development
4137 branch, as well as improved support for PowerPC platforms.
4140 *) Add lots of checks for memory allocation failure, error codes to indicate
4141 failure and freeing up memory if a failure occurs.
4142 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
4144 *) Add new -passin argument to dgst.
4147 *) Perform some character comparisons of different types in X509_NAME_cmp:
4148 this is needed for some certificates that reencode DNs into UTF8Strings
4149 (in violation of RFC3280) and can't or wont issue name rollover
4153 *) Make an explicit check during certificate validation to see that
4154 the CA setting in each certificate on the chain is correct. As a
4155 side effect always do the following basic checks on extensions,
4156 not just when there's an associated purpose to the check:
4158 - if there is an unhandled critical extension (unless the user
4159 has chosen to ignore this fault)
4160 - if the path length has been exceeded (if one is set at all)
4161 - that certain extensions fit the associated purpose (if one has
4165 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
4167 *) Avoid a race condition when CRLs are checked in a multi threaded
4168 environment. This would happen due to the reordering of the revoked
4169 entries during signature checking and serial number lookup. Now the
4170 encoding is cached and the serial number sort performed under a lock.
4171 Add new STACK function sk_is_sorted().
4174 *) Add Delta CRL to the extension code.
4177 *) Various fixes to s3_pkt.c so alerts are sent properly.
4178 [David Holmes <d.holmes@f5.com>]
4180 *) Reduce the chances of duplicate issuer name and serial numbers (in
4181 violation of RFC3280) using the OpenSSL certificate creation utilities.
4182 This is done by creating a random 64 bit value for the initial serial
4183 number when a serial number file is created or when a self signed
4184 certificate is created using 'openssl req -x509'. The initial serial
4185 number file is created using 'openssl x509 -next_serial' in CA.pl
4186 rather than being initialized to 1.
4189 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
4191 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4192 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4193 [Joe Orton, Steve Henson]
4195 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
4197 [Joe Orton, Steve Henson]
4199 *) Make it possible to have multiple active certificates with the same
4200 subject in the CA index file. This is done only if the keyword
4201 'unique_subject' is set to 'no' in the main CA section (default
4202 if 'CA_default') of the configuration file. The value is saved
4203 with the database itself in a separate index attribute file,
4204 named like the index file with '.attr' appended to the name.
4207 *) X509 verify fixes. Disable broken certificate workarounds when
4208 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
4209 keyUsage extension present. Don't accept CRLs with unhandled critical
4210 extensions: since verify currently doesn't process CRL extensions this
4211 rejects a CRL with *any* critical extensions. Add new verify error codes
4215 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
4216 A clarification of RFC2560 will require the use of OCTET STRINGs and
4217 some implementations cannot handle the current raw format. Since OpenSSL
4218 copies and compares OCSP nonces as opaque blobs without any attempt at
4219 parsing them this should not create any compatibility issues.
4222 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
4223 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
4224 this HMAC (and other) operations are several times slower than OpenSSL
4228 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
4229 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4231 *) Use the correct content when signing type "other".
4234 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
4236 *) Fix various bugs revealed by running the NISCC test suite:
4238 Stop out of bounds reads in the ASN1 code when presented with
4239 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4241 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
4243 If verify callback ignores invalid public key errors don't try to check
4244 certificate signature with the NULL public key.
4248 *) New -ignore_err option in ocsp application to stop the server
4249 exiting on the first error in a request.
4252 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4253 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4257 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4258 extra data after the compression methods not only for TLS 1.0
4259 but also for SSL 3.0 (as required by the specification).
4260 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4262 *) Change X509_certificate_type() to mark the key as exported/exportable
4263 when it's 512 *bits* long, not 512 bytes.
4266 *) Change AES_cbc_encrypt() so it outputs exact multiple of
4267 blocks during encryption.
4270 *) Various fixes to base64 BIO and non blocking I/O. On write
4271 flushes were not handled properly if the BIO retried. On read
4272 data was not being buffered properly and had various logic bugs.
4273 This also affects blocking I/O when the data being decoded is a
4277 *) Various S/MIME bugfixes and compatibility changes:
4278 output correct application/pkcs7 MIME type if
4279 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
4280 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
4281 of files as .eml work). Correctly handle very long lines in MIME