5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Transparently support X9.42 DH parameters when calling
8 PEM_read_bio_DHparameters. This means existing applications can handle
9 the new parameter format automatically.
12 *) Initial experimental support for X9.42 DH parameter format: mainly
13 to support use of 'q' parameter for RFC5114 parameters.
16 *) Add DH parameters from RFC5114 including test data to dhtest.
19 *) Update fips_test_suite to support multiple command line options. New
20 test to induce all self test errors in sequence and check expected
24 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
25 sign or verify all in one operation.
28 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
29 test programs and fips_test_suite. Includes functionality to parse
30 the minimal script output of fipsalgest.pl directly.
33 *) Add authorisation parameter to FIPS_module_mode_set().
36 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
39 *) Use separate DRBG fields for internal and external flags. New function
40 FIPS_drbg_health_check() to perform on demand health checking. Add
41 generation tests to fips_test_suite with reduced health check interval to
42 demonstrate periodic health checking. Add "nodh" option to
43 fips_test_suite to skip very slow DH test.
46 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
50 *) More extensive health check for DRBG checking many more failure modes.
51 New function FIPS_selftest_drbg_all() to handle every possible DRBG
52 combination: call this in fips_test_suite.
55 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
56 and POST to handle Dual EC cases.
59 *) Add support for canonical generation of DSA parameter 'g'. See
62 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
63 POST to handle HMAC cases.
66 *) Add functions FIPS_module_version() and FIPS_module_version_text()
67 to return numberical and string versions of the FIPS module number.
70 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
71 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
72 outside the validated module in the FIPS capable OpenSSL.
75 *) Minor change to DRBG entropy callback semantics. In some cases
76 there is no mutiple of the block length between min_len and
77 max_len. Allow the callback to return more than max_len bytes
78 of entropy but discard any extra: it is the callback's responsibility
79 to ensure that the extra data discarded does not impact the
80 requested amount of entropy.
83 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
84 information in FIPS186-3, SP800-57 and SP800-131A.
87 *) CCM support via EVP. Interface is very similar to GCM case except we
88 must supply all data in one chunk (i.e. no update, final) and the
89 message length must be supplied if AAD is used. Add algorithm test
93 *) Initial version of POST overhaul. Add POST callback to allow the status
94 of POST to be monitored and/or failures induced. Modify fips_test_suite
95 to use callback. Always run all selftests even if one fails.
98 *) XTS support including algorithm test driver in the fips_gcmtest program.
99 Note: this does increase the maximum key length from 32 to 64 bytes but
100 there should be no binary compatibility issues as existing applications
101 will never use XTS mode.
104 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
105 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
106 performs algorithm blocking for unapproved PRNG types. Also do not
107 set PRNG type in FIPS_mode_set(): leave this to the application.
108 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
109 the standard OpenSSL PRNG: set additional data to a date time vector.
112 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
113 This shouldn't present any incompatibility problems because applications
114 shouldn't be using these directly and any that are will need to rethink
115 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
118 *) Extensive self tests and health checking required by SP800-90 DRBG.
119 Remove strength parameter from FIPS_drbg_instantiate and always
120 instantiate at maximum supported strength.
123 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
126 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
129 *) New function DH_compute_key_padded() to compute a DH key and pad with
130 leading zeroes if needed: this complies with SP800-56A et al.
133 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
134 anything, incomplete, subject to change and largely untested at present.
137 *) Modify fipscanisteronly build option to only build the necessary object
138 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
141 *) Add experimental option FIPSSYMS to give all symbols in
142 fipscanister.o and FIPS or fips prefix. This will avoid
143 conflicts with future versions of OpenSSL. Add perl script
144 util/fipsas.pl to preprocess assembly language source files
145 and rename any affected symbols.
148 *) Add selftest checks and algorithm block of non-fips algorithms in
149 FIPS mode. Remove DES2 from selftests.
152 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
153 return internal method without any ENGINE dependencies. Add new
154 tiny fips sign and verify functions.
157 *) New build option no-ec2m to disable characteristic 2 code.
160 *) New build option "fipscanisteronly". This only builds fipscanister.o
161 and (currently) associated fips utilities. Uses the file Makefile.fips
162 instead of Makefile.org as the prototype.
165 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
166 Update fips_gcmtest to use IV generator.
169 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
170 setting output buffer to NULL. The *Final function must be
171 called although it will not retrieve any additional data. The tag
172 can be set or retrieved with a ctrl. The IV length is by default 12
173 bytes (96 bits) but can be set to an alternative value. If the IV
174 length exceeds the maximum IV length (currently 16 bytes) it cannot be
178 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
179 underlying do_cipher function handles all cipher semantics itself
180 including padding and finalisation. This is useful if (for example)
181 an ENGINE cipher handles block padding itself. The behaviour of
182 do_cipher is subtly changed if this flag is set: the return value
183 is the number of characters written to the output buffer (zero is
184 no longer an error code) or a negative error code. Also if the
185 input buffer is NULL and length 0 finalisation should be performed.
188 *) If a candidate issuer certificate is already part of the constructed
189 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
192 *) Improve forward-security support: add functions
194 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
195 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
197 for use by SSL/TLS servers; the callback function will be called whenever a
198 new session is created, and gets to decide whether the session may be
199 cached to make it resumable (return 0) or not (return 1). (As by the
200 SSL/TLS protocol specifications, the session_id sent by the server will be
201 empty to indicate that the session is not resumable; also, the server will
202 not generate RFC 4507 (RFC 5077) session tickets.)
204 A simple reasonable callback implementation is to return is_forward_secure.
205 This parameter will be set to 1 or 0 depending on the ciphersuite selected
206 by the SSL/TLS server library, indicating whether it can provide forward
208 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
210 *) New function OPENSSL_gmtime_diff to find the difference in days
211 and seconds between two tm structures. This will be used to provide
212 additional functionality for ASN1_TIME.
215 *) Add -trusted_first option which attempts to find certificates in the
216 trusted store even if an untrusted chain is also supplied.
219 *) Initial experimental support for explicitly trusted non-root CAs.
220 OpenSSL still tries to build a complete chain to a root but if an
221 intermediate CA has a trust setting included that is used. The first
222 setting is used: whether to trust or reject.
225 *) New -verify_name option in command line utilities to set verification
229 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
230 Add CMAC pkey methods.
233 *) Experimental regnegotiation in s_server -www mode. If the client
234 browses /reneg connection is renegotiated. If /renegcert it is
235 renegotiated requesting a certificate.
238 *) Add an "external" session cache for debugging purposes to s_server. This
239 should help trace issues which normally are only apparent in deployed
240 multi-process servers.
243 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
244 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
245 BIO_set_cipher() and some obscure PEM functions were changed so they
246 can now return an error. The RAND changes required a change to the
247 RAND_METHOD structure.
250 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
251 a gcc attribute to warn if the result of a function is ignored. This
252 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
253 whose return value is often ignored.
256 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
258 *) Add support for TLS/DTLS heartbeats.
259 [Robin Seggelmann <seggelmann@fh-muenster.de>]
261 *) Add support for SCTP.
262 [Robin Seggelmann <seggelmann@fh-muenster.de>]
264 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
265 [Andrey Kulikov <amdeich@gmail.com>]
267 *) Prevent malformed RFC3779 data triggering an assertion failure.
268 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
269 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
270 [Rob Austein <sra@hactrn.net>]
272 *) Improved PRNG seeding for VOS.
273 [Paul Green <Paul.Green@stratus.com>]
275 *) Extensive assembler packs updates, most notably:
277 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
278 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
279 - x86_64: bit-sliced AES implementation;
280 - ARM: NEON support, contemporary platforms optimizations;
281 - s390x: z196 support;
282 - *: GHASH and GF(2^m) multiplication implementations;
286 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
287 (removal of unnecessary code)
288 [Peter Sylvester <peter.sylvester@edelweb.fr>]
290 *) Add -attime option to openssl utilities.
291 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
293 *) Add TLS key material exporter from RFC 5705.
296 *) Add DTLS-SRTP negotiation from RFC 5764.
299 *) Add Next Protocol Negotiation,
300 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
301 disabled with a no-npn flag to config or Configure. Code donated
303 [Adam Langley <agl@google.com> and Ben Laurie]
305 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
306 NIST-P256, NIST-P521, with constant-time single point multiplication on
307 typical inputs. Compiler support for the nonstandard type __uint128_t is
308 required to use this (present in gcc 4.4 and later, for 64-bit builds).
309 Code made available under Apache License version 2.0.
311 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
312 line to include this in your build of OpenSSL, and run "make depend" (or
313 "make update"). This enables the following EC_METHODs:
315 EC_GFp_nistp224_method()
316 EC_GFp_nistp256_method()
317 EC_GFp_nistp521_method()
319 EC_GROUP_new_by_curve_name() will automatically use these (while
320 EC_GROUP_new_curve_GFp() currently prefers the more flexible
322 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
324 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
325 all platforms. Move ssize_t definition from e_os.h to the public
326 header file e_os2.h as it now appears in public header file cms.h
329 *) New -sigopt option to the ca, req and x509 utilities. Additional
330 signature parameters can be passed using this option and in
334 *) Add RSA PSS signing function. This will generate and set the
335 appropriate AlgorithmIdentifiers for PSS based on those in the
336 corresponding EVP_MD_CTX structure. No application support yet.
339 *) Support for companion algorithm specific ASN1 signing routines.
340 New function ASN1_item_sign_ctx() signs a pre-initialised
341 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
342 the appropriate parameters.
345 *) Add new algorithm specific ASN1 verification initialisation function
346 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
347 handling will be the same no matter what EVP_PKEY_METHOD is used.
348 Add a PSS handler to support verification of PSS signatures: checked
349 against a number of sample certificates.
352 *) Add signature printing for PSS. Add PSS OIDs.
353 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
355 *) Add algorithm specific signature printing. An individual ASN1 method
356 can now print out signatures instead of the standard hex dump.
358 More complex signatures (e.g. PSS) can print out more meaningful
359 information. Include DSA version that prints out the signature
363 *) Password based recipient info support for CMS library: implementing
367 *) Split password based encryption into PBES2 and PBKDF2 functions. This
368 neatly separates the code into cipher and PBE sections and is required
369 for some algorithms that split PBES2 into separate pieces (such as
373 *) Session-handling fixes:
374 - Fix handling of connections that are resuming with a session ID,
375 but also support Session Tickets.
376 - Fix a bug that suppressed issuing of a new ticket if the client
377 presented a ticket with an expired session.
378 - Try to set the ticket lifetime hint to something reasonable.
379 - Make tickets shorter by excluding irrelevant information.
380 - On the client side, don't ignore renewed tickets.
381 [Adam Langley, Bodo Moeller (Google)]
383 *) Fix PSK session representation.
386 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
388 This work was sponsored by Intel.
391 *) Add GCM support to TLS library. Some custom code is needed to split
392 the IV between the fixed (from PRF) and explicit (from TLS record)
393 portions. This adds all GCM ciphersuites supported by RFC5288 and
394 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
395 add a special AESGCM string for GCM only.
398 *) Expand range of ctrls for AES GCM. Permit setting invocation
399 field on decrypt and retrieval of invocation field only on encrypt.
402 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
403 As required by RFC5289 these ciphersuites cannot be used if for
404 versions of TLS earlier than 1.2.
407 *) For FIPS capable OpenSSL interpret a NULL default public key method
408 as unset and return the appopriate default but do *not* set the default.
409 This means we can return the appopriate method in applications that
410 swicth between FIPS and non-FIPS modes.
413 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
414 ENGINE is used then we cannot handle that in the FIPS module so we
415 keep original code iff non-FIPS operations are allowed.
418 *) Add -attime option to openssl verify.
419 [Peter Eckersley <pde@eff.org> and Ben Laurie]
421 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
424 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
425 FIPS EC methods unconditionally for now.
428 *) New build option no-ec2m to disable characteristic 2 code.
431 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
432 all cases can be covered as some introduce binary incompatibilities.
435 *) Redirect RSA operations to FIPS module including keygen,
436 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
439 *) Add similar low level API blocking to ciphers.
442 *) Low level digest APIs are not approved in FIPS mode: any attempt
443 to use these will cause a fatal error. Applications that *really* want
444 to use them can use the private_* version instead.
447 *) Redirect cipher operations to FIPS module for FIPS builds.
450 *) Redirect digest operations to FIPS module for FIPS builds.
453 *) Update build system to add "fips" flag which will link in fipscanister.o
454 for static and shared library builds embedding a signature if needed.
457 *) Output TLS supported curves in preference order instead of numerical
458 order. This is currently hardcoded for the highest order curves first.
459 This should be configurable so applications can judge speed vs strength.
462 *) Add TLS v1.2 server support for client authentication.
465 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
469 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
470 FIPS modules versions.
473 *) Add TLS v1.2 client side support for client authentication. Keep cache
474 of handshake records longer as we don't know the hash algorithm to use
475 until after the certificate request message is received.
478 *) Initial TLS v1.2 client support. Add a default signature algorithms
479 extension including all the algorithms we support. Parse new signature
480 format in client key exchange. Relax some ECC signing restrictions for
481 TLS v1.2 as indicated in RFC5246.
484 *) Add server support for TLS v1.2 signature algorithms extension. Switch
485 to new signature format when needed using client digest preference.
486 All server ciphersuites should now work correctly in TLS v1.2. No client
487 support yet and no support for client certificates.
490 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
491 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
492 ciphersuites. At present only RSA key exchange ciphersuites work with
493 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
494 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
495 and version checking.
498 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
499 with this defined it will not be affected by any changes to ssl internal
500 structures. Add several utility functions to allow openssl application
501 to work with OPENSSL_NO_SSL_INTERN defined.
505 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
507 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
510 *) Permit abbreviated handshakes when renegotiating using the function
511 SSL_renegotiate_abbreviated().
512 [Robin Seggelmann <seggelmann@fh-muenster.de>]
514 *) Add call to ENGINE_register_all_complete() to
515 ENGINE_load_builtin_engines(), so some implementations get used
516 automatically instead of needing explicit application support.
519 *) Add support for TLS key exporter as described in RFC5705.
520 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
522 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
523 a few changes are required:
525 Add SSL_OP_NO_TLSv1_1 flag.
527 Update version checking logic to handle version 1.1.
528 Add explicit IV handling (ported from DTLS code).
529 Add command line options to s_client/s_server.
532 Changes between 1.0.0e and 1.0.0f [xx XXX xxxx]
534 *) Fix ssl_ciph.c set-up race.
535 [Adam Langley (Google)]
537 *) Fix spurious failures in ecdsatest.c.
538 [Emilia Käsper (Google)]
540 *) Fix the BIO_f_buffer() implementation (which was mixing different
541 interpretations of the '..._len' fields).
542 [Adam Langley (Google)]
544 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
545 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
546 threads won't reuse the same blinding coefficients.
548 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
549 lock to call BN_BLINDING_invert_ex, and avoids one use of
550 BN_BLINDING_update for each BN_BLINDING structure (previously,
551 the last update always remained unused).
552 [Emilia Käsper (Google)]
554 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
555 [Bob Buckholz (Google)]
557 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
559 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
560 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
561 [Kaspar Brand <ossl@velox.ch>]
563 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
564 for multi-threaded use of ECDH. (CVE-2011-3210)
565 [Adam Langley (Google)]
567 *) Fix x509_name_ex_d2i memory leak on bad inputs.
570 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
571 signature public key algorithm by using OID xref utilities instead.
572 Before this you could only use some ECC ciphersuites with SHA1 only.
575 *) Add protection against ECDSA timing attacks as mentioned in the paper
576 by Billy Bob Brumley and Nicola Tuveri, see:
578 http://eprint.iacr.org/2011/232.pdf
580 [Billy Bob Brumley and Nicola Tuveri]
582 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
584 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
585 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
587 *) Fix bug in string printing code: if *any* escaping is enabled we must
588 escape the escape character (backslash) or the resulting string is
592 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
594 *) Disable code workaround for ancient and obsolete Netscape browsers
595 and servers: an attacker can use it in a ciphersuite downgrade attack.
596 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
599 *) Fixed J-PAKE implementation error, originally discovered by
600 Sebastien Martini, further info and confirmation from Stefan
601 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
604 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
606 *) Fix extension code to avoid race conditions which can result in a buffer
607 overrun vulnerability: resumed sessions must not be modified as they can
608 be shared by multiple threads. CVE-2010-3864
611 *) Fix WIN32 build system to correctly link an ENGINE directory into
615 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
617 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
619 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
621 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
623 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
624 context. The operation can be customised via the ctrl mechanism in
625 case ENGINEs want to include additional functionality.
628 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
631 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
632 output hashes compatible with older versions of OpenSSL.
633 [Willy Weisz <weisz@vcpc.univie.ac.at>]
635 *) Fix compression algorithm handling: if resuming a session use the
636 compression algorithm of the resumed session instead of determining
637 it from client hello again. Don't allow server to change algorithm.
640 *) Add load_crls() function to apps tidying load_certs() too. Add option
641 to verify utility to allow additional CRLs to be included.
644 *) Update OCSP request code to permit adding custom headers to the request:
645 some responders need this.
648 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
650 [Julia Lawall <julia@diku.dk>]
652 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
653 needlessly dereferenced structures, used obsolete functions and
654 didn't handle all updated verify codes correctly.
657 *) Disable MD2 in the default configuration.
660 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
661 indicate the initial BIO being pushed or popped. This makes it possible
662 to determine whether the BIO is the one explicitly called or as a result
663 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
664 it handles reference counts correctly and doesn't zero out the I/O bio
665 when it is not being explicitly popped. WARNING: applications which
666 included workarounds for the old buggy behaviour will need to be modified
667 or they could free up already freed BIOs.
670 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
671 renaming to all platforms (within the 0.9.8 branch, this was
672 done conditionally on Netware platforms to avoid a name clash).
673 [Guenter <lists@gknw.net>]
675 *) Add ECDHE and PSK support to DTLS.
676 [Michael Tuexen <tuexen@fh-muenster.de>]
678 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
682 *) Add "missing" function EVP_MD_flags() (without this the only way to
683 retrieve a digest flags is by accessing the structure directly. Update
684 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
685 or cipher is registered as in the "from" argument. Print out all
686 registered digests in the dgst usage message instead of manually
687 attempting to work them out.
690 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
691 this allows the use of compression and extensions. Change default cipher
692 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
693 by default unless an application cipher string requests it.
696 *) Alter match criteria in PKCS12_parse(). It used to try to use local
697 key ids to find matching certificates and keys but some PKCS#12 files
698 don't follow the (somewhat unwritten) rules and this strategy fails.
699 Now just gather all certificates together and the first private key
700 then look for the first certificate that matches the key.
703 *) Support use of registered digest and cipher names for dgst and cipher
704 commands instead of having to add each one as a special case. So now
711 openssl dgst -sha256 foo
713 and this works for ENGINE based algorithms too.
717 *) Update Gost ENGINE to support parameter files.
718 [Victor B. Wagner <vitus@cryptocom.ru>]
720 *) Support GeneralizedTime in ca utility.
721 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
723 *) Enhance the hash format used for certificate directory links. The new
724 form uses the canonical encoding (meaning equivalent names will work
725 even if they aren't identical) and uses SHA1 instead of MD5. This form
726 is incompatible with the older format and as a result c_rehash should
727 be used to rebuild symbolic links.
730 *) Make PKCS#8 the default write format for private keys, replacing the
731 traditional format. This form is standardised, more secure and doesn't
732 include an implicit MD5 dependency.
735 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
736 committed to OpenSSL should pass this lot as a minimum.
739 *) Add session ticket override functionality for use by EAP-FAST.
740 [Jouni Malinen <j@w1.fi>]
742 *) Modify HMAC functions to return a value. Since these can be implemented
743 in an ENGINE errors can occur.
746 *) Type-checked OBJ_bsearch_ex.
749 *) Type-checked OBJ_bsearch. Also some constification necessitated
750 by type-checking. Still to come: TXT_DB, bsearch(?),
751 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
755 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
756 seconds to a tm structure directly, instead of going through OS
757 specific date routines. This avoids any issues with OS routines such
758 as the year 2038 bug. New *_adj() functions for ASN1 time structures
759 and X509_time_adj_ex() to cover the extended range. The existing
760 X509_time_adj() is still usable and will no longer have any date issues.
763 *) Delta CRL support. New use deltas option which will attempt to locate
764 and search any appropriate delta CRLs available.
766 This work was sponsored by Google.
769 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
770 code and add additional score elements. Validate alternate CRL paths
771 as part of the CRL checking and indicate a new error "CRL path validation
772 error" in this case. Applications wanting additional details can use
773 the verify callback and check the new "parent" field. If this is not
774 NULL CRL path validation is taking place. Existing applications wont
775 see this because it requires extended CRL support which is off by
778 This work was sponsored by Google.
781 *) Support for freshest CRL extension.
783 This work was sponsored by Google.
786 *) Initial indirect CRL support. Currently only supported in the CRLs
787 passed directly and not via lookup. Process certificate issuer
788 CRL entry extension and lookup CRL entries by bother issuer name
789 and serial number. Check and process CRL issuer entry in IDP extension.
791 This work was sponsored by Google.
794 *) Add support for distinct certificate and CRL paths. The CRL issuer
795 certificate is validated separately in this case. Only enabled if
796 an extended CRL support flag is set: this flag will enable additional
797 CRL functionality in future.
799 This work was sponsored by Google.
802 *) Add support for policy mappings extension.
804 This work was sponsored by Google.
807 *) Fixes to pathlength constraint, self issued certificate handling,
808 policy processing to align with RFC3280 and PKITS tests.
810 This work was sponsored by Google.
813 *) Support for name constraints certificate extension. DN, email, DNS
814 and URI types are currently supported.
816 This work was sponsored by Google.
819 *) To cater for systems that provide a pointer-based thread ID rather
820 than numeric, deprecate the current numeric thread ID mechanism and
821 replace it with a structure and associated callback type. This
822 mechanism allows a numeric "hash" to be extracted from a thread ID in
823 either case, and on platforms where pointers are larger than 'long',
824 mixing is done to help ensure the numeric 'hash' is usable even if it
825 can't be guaranteed unique. The default mechanism is to use "&errno"
826 as a pointer-based thread ID to distinguish between threads.
828 Applications that want to provide their own thread IDs should now use
829 CRYPTO_THREADID_set_callback() to register a callback that will call
830 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
832 Note that ERR_remove_state() is now deprecated, because it is tied
833 to the assumption that thread IDs are numeric. ERR_remove_state(0)
834 to free the current thread's error state should be replaced by
835 ERR_remove_thread_state(NULL).
837 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
838 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
839 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
840 application was previously providing a numeric thread callback that
841 was inappropriate for distinguishing threads, then uniqueness might
842 have been obtained with &errno that happened immediately in the
843 intermediate development versions of OpenSSL; this is no longer the
844 case, the numeric thread callback will now override the automatic use
846 [Geoff Thorpe, with help from Bodo Moeller]
848 *) Initial support for different CRL issuing certificates. This covers a
849 simple case where the self issued certificates in the chain exist and
850 the real CRL issuer is higher in the existing chain.
852 This work was sponsored by Google.
855 *) Removed effectively defunct crypto/store from the build.
858 *) Revamp of STACK to provide stronger type-checking. Still to come:
859 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
860 ASN1_STRING, CONF_VALUE.
863 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
864 RAM on SSL connections. This option can save about 34k per idle SSL.
867 *) Revamp of LHASH to provide stronger type-checking. Still to come:
868 STACK, TXT_DB, bsearch, qsort.
871 *) Initial support for Cryptographic Message Syntax (aka CMS) based
872 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
873 support for data, signedData, compressedData, digestedData and
874 encryptedData, envelopedData types included. Scripts to check against
875 RFC4134 examples draft and interop and consistency checks of many
876 content types and variants.
879 *) Add options to enc utility to support use of zlib compression BIO.
882 *) Extend mk1mf to support importing of options and assembly language
883 files from Configure script, currently only included in VC-WIN32.
884 The assembly language rules can now optionally generate the source
885 files from the associated perl scripts.
888 *) Implement remaining functionality needed to support GOST ciphersuites.
889 Interop testing has been performed using CryptoPro implementations.
890 [Victor B. Wagner <vitus@cryptocom.ru>]
892 *) s390x assembler pack.
895 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
899 *) Implement Opaque PRF Input TLS extension as specified in
900 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
901 official specification yet and no extension type assignment by
902 IANA exists, this extension (for now) will have to be explicitly
903 enabled when building OpenSSL by providing the extension number
904 to use. For example, specify an option
906 -DTLSEXT_TYPE_opaque_prf_input=0x9527
908 to the "config" or "Configure" script to enable the extension,
909 assuming extension number 0x9527 (which is a completely arbitrary
910 and unofficial assignment based on the MD5 hash of the Internet
911 Draft). Note that by doing so, you potentially lose
912 interoperability with other TLS implementations since these might
913 be using the same extension number for other purposes.
915 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
916 opaque PRF input value to use in the handshake. This will create
917 an interal copy of the length-'len' string at 'src', and will
918 return non-zero for success.
920 To get more control and flexibility, provide a callback function
923 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
924 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
928 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
931 Callback function 'cb' will be called in handshakes, and is
932 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
933 Argument 'arg' is for application purposes (the value as given to
934 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
935 be provided to the callback function). The callback function
936 has to return non-zero to report success: usually 1 to use opaque
937 PRF input just if possible, or 2 to enforce use of the opaque PRF
938 input. In the latter case, the library will abort the handshake
939 if opaque PRF input is not successfully negotiated.
941 Arguments 'peerinput' and 'len' given to the callback function
942 will always be NULL and 0 in the case of a client. A server will
943 see the client's opaque PRF input through these variables if
944 available (NULL and 0 otherwise). Note that if the server
945 provides an opaque PRF input, the length must be the same as the
946 length of the client's opaque PRF input.
948 Note that the callback function will only be called when creating
949 a new session (session resumption can resume whatever was
950 previously negotiated), and will not be called in SSL 2.0
951 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
952 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
953 for applications that need to enforce opaque PRF input.
957 *) Update ssl code to support digests other than SHA1+MD5 for handshake
960 [Victor B. Wagner <vitus@cryptocom.ru>]
962 *) Add RFC4507 support to OpenSSL. This includes the corrections in
963 RFC4507bis. The encrypted ticket format is an encrypted encoded
964 SSL_SESSION structure, that way new session features are automatically
967 If a client application caches session in an SSL_SESSION structure
968 support is transparent because tickets are now stored in the encoded
971 The SSL_CTX structure automatically generates keys for ticket
972 protection in servers so again support should be possible
973 with no application modification.
975 If a client or server wishes to disable RFC4507 support then the option
976 SSL_OP_NO_TICKET can be set.
978 Add a TLS extension debugging callback to allow the contents of any client
979 or server extensions to be examined.
981 This work was sponsored by Google.
984 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
985 OpenSSL should now compile cleanly on gcc 4.2
986 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
988 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
989 support including streaming MAC support: this is required for GOST
991 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
993 *) Add option -stream to use PKCS#7 streaming in smime utility. New
994 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
995 to output in BER and PEM format.
998 *) Experimental support for use of HMAC via EVP_PKEY interface. This
999 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1000 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1001 ENGINE support for HMAC keys which are unextractable. New -mac and
1002 -macopt options to dgst utility.
1005 *) New option -sigopt to dgst utility. Update dgst to use
1006 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1007 alternative signing paramaters such as X9.31 or PSS in the dgst
1011 *) Change ssl_cipher_apply_rule(), the internal function that does
1012 the work each time a ciphersuite string requests enabling
1013 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1014 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1015 the order of disabled ciphersuites such that those ciphersuites
1016 that most recently went from enabled to disabled not only stay
1017 in order with respect to each other, but also have higher priority
1018 than other disabled ciphersuites the next time ciphersuites are
1021 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1022 the same ciphersuites as with "HIGH" alone, but in a specific
1023 order where the PSK ciphersuites come first (since they are the
1024 most recently disabled ciphersuites when "HIGH" is parsed).
1026 Also, change ssl_create_cipher_list() (using this new
1027 funcionality) such that between otherwise identical
1028 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1032 *) Change ssl_create_cipher_list() so that it automatically
1033 arranges the ciphersuites in reasonable order before starting
1034 to process the rule string. Thus, the definition for "DEFAULT"
1035 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1036 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1037 This makes it much easier to arrive at a reasonable default order
1038 in applications for which anonymous ciphers are OK (meaning
1039 that you can't actually use DEFAULT).
1040 [Bodo Moeller; suggested by Victor Duchovni]
1042 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1043 processing) into multiple integers instead of setting
1044 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1045 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1046 (These masks as well as the individual bit definitions are hidden
1047 away into the non-exported interface ssl/ssl_locl.h, so this
1048 change to the definition of the SSL_CIPHER structure shouldn't
1049 affect applications.) This give us more bits for each of these
1050 categories, so there is no longer a need to coagulate AES128 and
1051 AES256 into a single algorithm bit, and to coagulate Camellia128
1052 and Camellia256 into a single algorithm bit, which has led to all
1055 Thus, among other things, the kludge introduced in 0.9.7m and
1056 0.9.8e for masking out AES256 independently of AES128 or masking
1057 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1059 With the change, we also introduce new ciphersuite aliases that
1060 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1064 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1065 Use the leftmost N bytes of the signature input if the input is
1066 larger than the prime q (with N being the size in bytes of q).
1069 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1070 it yet and it is largely untested.
1073 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1076 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1077 some compilers (gcc 4.2 and later) reject their use. Safestack is
1078 reimplemented. Update ASN1 to avoid use of legacy functions.
1081 *) Win32/64 targets are linked with Winsock2.
1084 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1085 to external functions. This can be used to increase CRL handling
1086 efficiency especially when CRLs are very large by (for example) storing
1087 the CRL revoked certificates in a database.
1090 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1091 new CRLs added to a directory can be used. New command line option
1092 -verify_return_error to s_client and s_server. This causes real errors
1093 to be returned by the verify callback instead of carrying on no matter
1094 what. This reflects the way a "real world" verify callback would behave.
1097 *) GOST engine, supporting several GOST algorithms and public key formats.
1098 Kindly donated by Cryptocom.
1101 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1102 partitioned by DP are handled but no indirect CRL or reason partitioning
1103 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1104 selected via a scoring technique which handles IDP and AKID in CRLs.
1107 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1108 will ultimately be used for all verify operations: this will remove the
1109 X509_STORE dependency on certificate verification and allow alternative
1110 lookup methods. X509_STORE based implementations of these two callbacks.
1113 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1114 Modify get_crl() to find a valid (unexpired) CRL if possible.
1117 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1118 this would be called X509_CRL_cmp() but that name is already used by
1119 a function that just compares CRL issuer names. Cache several CRL
1120 extensions in X509_CRL structure and cache CRLDP in X509.
1123 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1124 this maps equivalent X509_NAME structures into a consistent structure.
1125 Name comparison can then be performed rapidly using memcmp().
1128 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1132 *) Allow digests to supply their own micalg string for S/MIME type using
1133 the ctrl EVP_MD_CTRL_MICALG.
1136 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1137 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1138 ctrl. It can then customise the structure before and/or after signing
1142 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1143 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1144 to free up any added signature OIDs.
1147 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1148 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1149 digest and cipher tables. New options added to openssl utility:
1150 list-message-digest-algorithms and list-cipher-algorithms.
1153 *) Change the array representation of binary polynomials: the list
1154 of degrees of non-zero coefficients is now terminated with -1.
1155 Previously it was terminated with 0, which was also part of the
1156 value; thus, the array representation was not applicable to
1157 polynomials where t^0 has coefficient zero. This change makes
1158 the array representation useful in a more general context.
1161 *) Various modifications and fixes to SSL/TLS cipher string
1162 handling. For ECC, the code now distinguishes between fixed ECDH
1163 with RSA certificates on the one hand and with ECDSA certificates
1164 on the other hand, since these are separate ciphersuites. The
1165 unused code for Fortezza ciphersuites has been removed.
1167 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1168 (not "ECDHE"). For consistency with the code for DH
1169 certificates, use of ECDH certificates is now considered ECDH
1170 authentication, not RSA or ECDSA authentication (the latter is
1171 merely the CA's signing algorithm and not actively used in the
1174 The temporary ciphersuite alias "ECCdraft" is no longer
1175 available, and ECC ciphersuites are no longer excluded from "ALL"
1176 and "DEFAULT". The following aliases now exist for RFC 4492
1177 ciphersuites, most of these by analogy with the DH case:
1179 kECDHr - ECDH cert, signed with RSA
1180 kECDHe - ECDH cert, signed with ECDSA
1181 kECDH - ECDH cert (signed with either RSA or ECDSA)
1182 kEECDH - ephemeral ECDH
1183 ECDH - ECDH cert or ephemeral ECDH
1189 AECDH - anonymous ECDH
1190 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1194 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1195 Use correct micalg parameters depending on digest(s) in signed message.
1198 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1199 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1202 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1203 an engine to register a method. Add ENGINE lookups for methods and
1204 functional reference processing.
1207 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1208 EVP_{Sign,Verify}* which allow an application to customise the signature
1212 *) New -resign option to smime utility. This adds one or more signers
1213 to an existing PKCS#7 signedData structure. Also -md option to use an
1214 alternative message digest algorithm for signing.
1217 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1218 create PKCS7 structures containing multiple signers. Update smime
1219 application to support multiple signers.
1222 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1226 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1227 Reorganize PBE internals to lookup from a static table using NIDs,
1228 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1229 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1230 PRF which will be automatically used with PBES2.
1233 *) Replace the algorithm specific calls to generate keys in "req" with the
1237 *) Update PKCS#7 enveloped data routines to use new API. This is now
1238 supported by any public key method supporting the encrypt operation. A
1239 ctrl is added to allow the public key algorithm to examine or modify
1240 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1244 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1245 a default digest type to use. In most cases this will be SHA1 but some
1246 algorithms (such as GOST) need to specify an alternative digest. The
1247 return value indicates how strong the prefernce is 1 means optional and
1248 2 is mandatory (that is it is the only supported type). Modify
1249 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1250 use the default md. Update openssl utilities to use the default digest
1251 type for signing if it is not explicitly indicated.
1254 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1255 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1256 signing method from the key type. This effectively removes the link
1257 between digests and public key types.
1260 *) Add an OID cross reference table and utility functions. Its purpose is to
1261 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1262 rsaEncryption. This will allow some of the algorithm specific hackery
1263 needed to use the correct OID to be removed.
1266 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1267 structures for PKCS7_sign(). They are now set up by the relevant public
1271 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1274 *) Add support for key derivation (agreement) in the API, DH method and
1278 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1279 public and private key formats. As a side effect these add additional
1280 command line functionality not previously available: DSA signatures can be
1281 generated and verified using pkeyutl and DH key support and generation in
1286 [Oliver Tappe <zooey@hirschkaefer.de>]
1288 *) New make target "install_html_docs" installs HTML renditions of the
1290 [Oliver Tappe <zooey@hirschkaefer.de>]
1292 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1293 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1294 support key and parameter generation and add initial key generation
1295 functionality for RSA.
1298 *) Add functions for main EVP_PKEY_method operations. The undocumented
1299 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1300 EVP_PKEY_{encrypt,decrypt}_old.
1303 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1304 key API, doesn't do much yet.
1307 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1308 public key algorithms. New option to openssl utility:
1309 "list-public-key-algorithms" to print out info.
1312 *) Implement the Supported Elliptic Curves Extension for
1313 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1316 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1317 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1320 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1321 utilities such as rsa, dsa, dsaparam etc except they process any key
1325 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1326 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1327 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1331 *) Initial support for pluggable public key ASN1.
1332 De-spaghettify the public key ASN1 handling. Move public and private
1333 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1334 algorithm specific handling to a single module within the relevant
1335 algorithm directory. Add functions to allow (near) opaque processing
1336 of public and private key structures.
1339 *) Implement the Supported Point Formats Extension for
1340 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1343 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1344 for the psk identity [hint] and the psk callback functions to the
1345 SSL_SESSION, SSL and SSL_CTX structure.
1348 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1352 SSL_CTX_use_psk_identity_hint
1353 SSL_get_psk_identity_hint
1354 SSL_get_psk_identity
1355 SSL_use_psk_identity_hint
1357 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1359 *) Add RFC 3161 compliant time stamp request creation, response generation
1360 and response verification functionality.
1361 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1363 *) Add initial support for TLS extensions, specifically for the server_name
1364 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1365 have new members for a host name. The SSL data structure has an
1366 additional member SSL_CTX *initial_ctx so that new sessions can be
1367 stored in that context to allow for session resumption, even after the
1368 SSL has been switched to a new SSL_CTX in reaction to a client's
1369 server_name extension.
1371 New functions (subject to change):
1373 SSL_get_servername()
1374 SSL_get_servername_type()
1377 New CTRL codes and macros (subject to change):
1379 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1380 - SSL_CTX_set_tlsext_servername_callback()
1381 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1382 - SSL_CTX_set_tlsext_servername_arg()
1383 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1385 openssl s_client has a new '-servername ...' option.
1387 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1388 '-key2 ...', '-servername_fatal' (subject to change). This allows
1389 testing the HostName extension for a specific single host name ('-cert'
1390 and '-key' remain fallbacks for handshakes without HostName
1391 negotiation). If the unrecogninzed_name alert has to be sent, this by
1392 default is a warning; it becomes fatal with the '-servername_fatal'
1395 [Peter Sylvester, Remy Allais, Christophe Renou]
1397 *) Whirlpool hash implementation is added.
1400 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1401 bn(64,32). Because of instruction set limitations it doesn't have
1402 any negative impact on performance. This was done mostly in order
1403 to make it possible to share assembler modules, such as bn_mul_mont
1404 implementations, between 32- and 64-bit builds without hassle.
1407 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1408 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1412 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1413 dedicated Montgomery multiplication procedure, is introduced.
1414 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1415 "64-bit" performance on certain 32-bit targets.
1418 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1419 in SSL structures. New SSL ctrl to set maximum send fragment size.
1420 Save memory by seeting the I/O buffer sizes dynamically instead of
1421 using the maximum available value.
1424 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1425 in addition to the text details.
1428 *) Very, very preliminary EXPERIMENTAL support for printing of general
1429 ASN1 structures. This currently produces rather ugly output and doesn't
1430 handle several customised structures at all.
1433 *) Integrated support for PVK file format and some related formats such
1434 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1435 these in the 'rsa' and 'dsa' utilities.
1438 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1441 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1442 place for the (very old) "NETSCAPE" format certificates which are now
1443 handled using new ASN1 code equivalents.
1446 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1447 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1448 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1451 *) Modify CRL distribution points extension code to print out previously
1452 unsupported fields. Enhance extension setting code to allow setting of
1456 *) Add print and set support for Issuing Distribution Point CRL extension.
1459 *) Change 'Configure' script to enable Camellia by default.
1462 Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
1464 *) Fix ssl_ciph.c set-up race.
1465 [Adam Langley (Google)]
1467 *) Fix spurious failures in ecdsatest.c.
1468 [Emilia Käsper (Google)]
1470 *) Fix the BIO_f_buffer() implementation (which was mixing different
1471 interpretations of the '..._len' fields).
1472 [Adam Langley (Google)]
1474 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1475 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1476 threads won't reuse the same blinding coefficients.
1478 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1479 lock to call BN_BLINDING_invert_ex, and avoids one use of
1480 BN_BLINDING_update for each BN_BLINDING structure (previously,
1481 the last update always remained unused).
1482 [Emilia Käsper (Google)]
1484 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1485 for multi-threaded use of ECDH.
1486 [Adam Langley (Google)]
1488 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1491 *) Add protection against ECDSA timing attacks as mentioned in the paper
1492 by Billy Bob Brumley and Nicola Tuveri, see:
1494 http://eprint.iacr.org/2011/232.pdf
1496 [Billy Bob Brumley and Nicola Tuveri]
1498 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1500 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1501 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1503 *) Fix bug in string printing code: if *any* escaping is enabled we must
1504 escape the escape character (backslash) or the resulting string is
1508 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1510 *) Disable code workaround for ancient and obsolete Netscape browsers
1511 and servers: an attacker can use it in a ciphersuite downgrade attack.
1512 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1515 *) Fixed J-PAKE implementation error, originally discovered by
1516 Sebastien Martini, further info and confirmation from Stefan
1517 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1520 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1522 *) Fix extension code to avoid race conditions which can result in a buffer
1523 overrun vulnerability: resumed sessions must not be modified as they can
1524 be shared by multiple threads. CVE-2010-3864
1527 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1530 *) Don't reencode certificate when calculating signature: cache and use
1531 the original encoding instead. This makes signature verification of
1532 some broken encodings work correctly.
1535 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1536 is also one of the inputs.
1537 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1539 *) Don't repeatedly append PBE algorithms to table if they already exist.
1540 Sort table on each new add. This effectively makes the table read only
1541 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1545 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1547 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1550 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1551 access or freeing data twice (CVE-2010-0742)
1552 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1554 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1555 common in certificates and some applications which only call
1556 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1560 Reduce copying into .apps and .test in makevms.com
1561 Don't try to use blank CA certificate in CA.com
1562 Allow use of C files from original directories in maketests.com
1563 [Steven M. Schweda" <sms@antinode.info>]
1565 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1567 *) When rejecting SSL/TLS records due to an incorrect version number, never
1568 update s->server with a new major version number. As of
1569 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1570 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1571 the previous behavior could result in a read attempt at NULL when
1572 receiving specific incorrect SSL/TLS records once record payload
1573 protection is active. (CVE-2010-0740)
1574 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1576 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1577 could be crashed if the relevant tables were not present (e.g. chrooted).
1578 [Tomas Hoger <thoger@redhat.com>]
1580 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1582 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1583 [Martin Olsson, Neel Mehta]
1585 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1586 accommodate for stack sorting, always a write lock!).
1589 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1590 excessive delays in the RAND_poll(): over a minute. As a workaround
1591 include a time check in the inner Heap32Next loop too.
1594 *) The code that handled flushing of data in SSL/TLS originally used the
1595 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1596 the problem outlined in PR#1949. The fix suggested there however can
1597 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1598 of Apache). So instead simplify the code to flush unconditionally.
1599 This should be fine since flushing with no data to flush is a no op.
1602 *) Handle TLS versions 2.0 and later properly and correctly use the
1603 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1604 off ancient servers have a habit of sticking around for a while...
1607 *) Modify compression code so it frees up structures without using the
1608 ex_data callbacks. This works around a problem where some applications
1609 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1610 restarting) then use compression (e.g. SSL with compression) later.
1611 This results in significant per-connection memory leaks and
1612 has caused some security issues including CVE-2008-1678 and
1616 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1617 change when encrypting or decrypting.
1620 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1621 connect and renegotiate with servers which do not support RI.
1622 Until RI is more widely deployed this option is enabled by default.
1625 *) Add "missing" ssl ctrls to clear options and mode.
1628 *) If client attempts to renegotiate and doesn't support RI respond with
1629 a no_renegotiation alert as required by RFC5746. Some renegotiating
1630 TLS clients will continue a connection gracefully when they receive
1631 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1632 waiting for a server hello which it will never receive. Now we treat a
1633 received no_renegotiation alert as a fatal error. This is because
1634 applications requesting a renegotiation might well expect it to succeed
1635 and would have no code in place to handle the server denying it so the
1636 only safe thing to do is to terminate the connection.
1639 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1640 peer supports secure renegotiation and 0 otherwise. Print out peer
1641 renegotiation support in s_client/s_server.
1644 *) Replace the highly broken and deprecated SPKAC certification method with
1645 the updated NID creation version. This should correctly handle UTF8.
1648 *) Implement RFC5746. Re-enable renegotiation but require the extension
1649 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1650 turns out to be a bad idea. It has been replaced by
1651 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1652 SSL_CTX_set_options(). This is really not recommended unless you
1653 know what you are doing.
1654 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1656 *) Fixes to stateless session resumption handling. Use initial_ctx when
1657 issuing and attempting to decrypt tickets in case it has changed during
1658 servername handling. Use a non-zero length session ID when attempting
1659 stateless session resumption: this makes it possible to determine if
1660 a resumption has occurred immediately after receiving server hello
1661 (several places in OpenSSL subtly assume this) instead of later in
1665 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1666 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1667 fixes for a few places where the return code is not checked
1669 [Julia Lawall <julia@diku.dk>]
1671 *) Add --strict-warnings option to Configure script to include devteam
1672 warnings in other configurations.
1675 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1676 makes it possible to install openssl libraries in locations which
1677 have names other than "lib", for example "/usr/lib64" which some
1679 [Steve Henson, based on patch from Jeremy Utley]
1681 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1682 X690 8.9.12 and can produce some misleading textual output of OIDs.
1683 [Steve Henson, reported by Dan Kaminsky]
1685 *) Delete MD2 from algorithm tables. This follows the recommendation in
1686 several standards that it is not used in new applications due to
1687 several cryptographic weaknesses. For binary compatibility reasons
1688 the MD2 API is still compiled in by default.
1691 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1695 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1696 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1698 [Guenter <lists@gknw.net>]
1700 *) Fix the server certificate chain building code to use X509_verify_cert(),
1701 it used to have an ad-hoc builder which was unable to cope with anything
1702 other than a simple chain.
1703 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1705 *) Don't check self signed certificate signatures in X509_verify_cert()
1706 by default (a flag can override this): it just wastes time without
1707 adding any security. As a useful side effect self signed root CAs
1708 with non-FIPS digests are now usable in FIPS mode.
1711 *) In dtls1_process_out_of_seq_message() the check if the current message
1712 is already buffered was missing. For every new message was memory
1713 allocated, allowing an attacker to perform an denial of service attack
1714 with sending out of seq handshake messages until there is no memory
1715 left. Additionally every future messege was buffered, even if the
1716 sequence number made no sense and would be part of another handshake.
1717 So only messages with sequence numbers less than 10 in advance will be
1718 buffered. (CVE-2009-1378)
1719 [Robin Seggelmann, discovered by Daniel Mentz]
1721 *) Records are buffered if they arrive with a future epoch to be
1722 processed after finishing the corresponding handshake. There is
1723 currently no limitation to this buffer allowing an attacker to perform
1724 a DOS attack with sending records with future epochs until there is no
1725 memory left. This patch adds the pqueue_size() function to detemine
1726 the size of a buffer and limits the record buffer to 100 entries.
1728 [Robin Seggelmann, discovered by Daniel Mentz]
1730 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1731 parent structure is freed. (CVE-2009-1379)
1734 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1735 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1738 [Ilya O. <vrghost@gmail.com>]
1740 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1742 *) Disable renegotiation completely - this fixes a severe security
1743 problem (CVE-2009-3555) at the cost of breaking all
1744 renegotiation. Renegotiation can be re-enabled by setting
1745 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1746 run-time. This is really not recommended unless you know what
1750 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1752 *) Don't set val to NULL when freeing up structures, it is freed up by
1753 underlying code. If sizeof(void *) > sizeof(long) this can result in
1754 zeroing past the valid field. (CVE-2009-0789)
1755 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1757 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1758 checked correctly. This would allow some invalid signed attributes to
1759 appear to verify correctly. (CVE-2009-0591)
1760 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1762 *) Reject UniversalString and BMPString types with invalid lengths. This
1763 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1764 a legal length. (CVE-2009-0590)
1767 *) Set S/MIME signing as the default purpose rather than setting it
1768 unconditionally. This allows applications to override it at the store
1772 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1773 to handle some structures.
1776 *) Improve efficiency of mem_gets: don't search whole buffer each time
1778 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1780 *) New -hex option for openssl rand.
1783 *) Print out UTF8String and NumericString when parsing ASN1.
1786 *) Support NumericString type for name components.
1789 *) Allow CC in the environment to override the automatically chosen
1790 compiler. Note that nothing is done to ensure flags work with the
1794 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1796 *) Properly check EVP_VerifyFinal() and similar return values
1798 [Ben Laurie, Bodo Moeller, Google Security Team]
1800 *) Enable TLS extensions by default.
1803 *) Allow the CHIL engine to be loaded, whether the application is
1804 multithreaded or not. (This does not release the developer from the
1805 obligation to set up the dynamic locking callbacks.)
1806 [Sander Temme <sander@temme.net>]
1808 *) Use correct exit code if there is an error in dgst command.
1809 [Steve Henson; problem pointed out by Roland Dirlewanger]
1811 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1812 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1815 *) Add experimental JPAKE support, including demo authentication in
1816 s_client and s_server.
1819 *) Set the comparison function in v3_addr_canonize().
1820 [Rob Austein <sra@hactrn.net>]
1822 *) Add support for XMPP STARTTLS in s_client.
1823 [Philip Paeps <philip@freebsd.org>]
1825 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1826 to ensure that even with this option, only ciphersuites in the
1827 server's preference list will be accepted. (Note that the option
1828 applies only when resuming a session, so the earlier behavior was
1829 just about the algorithm choice for symmetric cryptography.)
1832 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1834 *) Fix NULL pointer dereference if a DTLS server received
1835 ChangeCipherSpec as first record (CVE-2009-1386).
1838 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1839 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1842 *) The fix in 0.9.8c that supposedly got rid of unsafe
1843 double-checked locking was incomplete for RSA blinding,
1844 addressing just one layer of what turns out to have been
1845 doubly unsafe triple-checked locking.
1847 So now fix this for real by retiring the MONT_HELPER macro
1848 in crypto/rsa/rsa_eay.c.
1850 [Bodo Moeller; problem pointed out by Marius Schilder]
1852 *) Various precautionary measures:
1854 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1856 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1857 (NB: This would require knowledge of the secret session ticket key
1858 to exploit, in which case you'd be SOL either way.)
1860 - Change bn_nist.c so that it will properly handle input BIGNUMs
1861 outside the expected range.
1863 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1866 [Neel Mehta, Bodo Moeller]
1868 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1869 the load fails. Useful for distros.
1870 [Ben Laurie and the FreeBSD team]
1872 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1875 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1878 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1880 This work was sponsored by Logica.
1883 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1884 keystores. Support for SSL/TLS client authentication too.
1885 Not compiled unless enable-capieng specified to Configure.
1887 This work was sponsored by Logica.
1890 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1891 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1892 attribute creation routines such as certifcate requests and PKCS#12
1896 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1898 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1899 handshake which could lead to a cilent crash as found using the
1900 Codenomicon TLS test suite (CVE-2008-1672)
1901 [Steve Henson, Mark Cox]
1903 *) Fix double free in TLS server name extensions which could lead to
1904 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1907 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1909 Clear the error queue to ensure that error entries left from
1910 older function calls do not interfere with the correct operation.
1911 [Lutz Jaenicke, Erik de Castro Lopo]
1913 *) Remove root CA certificates of commercial CAs:
1915 The OpenSSL project does not recommend any specific CA and does not
1916 have any policy with respect to including or excluding any CA.
1917 Therefore it does not make any sense to ship an arbitrary selection
1918 of root CA certificates with the OpenSSL software.
1921 *) RSA OAEP patches to fix two separate invalid memory reads.
1922 The first one involves inputs when 'lzero' is greater than
1923 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1924 before the beginning of from). The second one involves inputs where
1925 the 'db' section contains nothing but zeroes (there is a one-byte
1926 invalid read after the end of 'db').
1927 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1929 *) Partial backport from 0.9.9-dev:
1931 Introduce bn_mul_mont (dedicated Montgomery multiplication
1932 procedure) as a candidate for BIGNUM assembler implementation.
1933 While 0.9.9-dev uses assembler for various architectures, only
1934 x86_64 is available by default here in the 0.9.8 branch, and
1935 32-bit x86 is available through a compile-time setting.
1937 To try the 32-bit x86 assembler implementation, use Configure
1938 option "enable-montasm" (which exists only for this backport).
1940 As "enable-montasm" for 32-bit x86 disclaims code stability
1941 anyway, in this constellation we activate additional code
1942 backported from 0.9.9-dev for further performance improvements,
1943 namely BN_from_montgomery_word. (To enable this otherwise,
1944 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1946 [Andy Polyakov (backport partially by Bodo Moeller)]
1948 *) Add TLS session ticket callback. This allows an application to set
1949 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1950 values. This is useful for key rollover for example where several key
1951 sets may exist with different names.
1954 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1955 This was broken until now in 0.9.8 releases, such that the only way
1956 a registered ENGINE could be used (assuming it initialises
1957 successfully on the host) was to explicitly set it as the default
1958 for the relevant algorithms. This is in contradiction with 0.9.7
1959 behaviour and the documentation. With this fix, when an ENGINE is
1960 registered into a given algorithm's table of implementations, the
1961 'uptodate' flag is reset so that auto-discovery will be used next
1962 time a new context for that algorithm attempts to select an
1964 [Ian Lister (tweaked by Geoff Thorpe)]
1966 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1967 implemention in the following ways:
1969 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1972 Lack of BER streaming support means one pass streaming processing is
1973 only supported if data is detached: setting the streaming flag is
1974 ignored for embedded content.
1976 CMS support is disabled by default and must be explicitly enabled
1977 with the enable-cms configuration option.
1980 *) Update the GMP engine glue to do direct copies between BIGNUM and
1981 mpz_t when openssl and GMP use the same limb size. Otherwise the
1982 existing "conversion via a text string export" trick is still used.
1983 [Paul Sheer <paulsheer@gmail.com>]
1985 *) Zlib compression BIO. This is a filter BIO which compressed and
1986 uncompresses any data passed through it.
1989 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1990 RFC3394 compatible AES key wrapping.
1993 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1994 sets string data without copying. X509_ALGOR_set0() and
1995 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1996 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1997 from an X509_ATTRIBUTE structure optionally checking it occurs only
1998 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2002 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2003 to get the expected BN_FLG_CONSTTIME behavior.
2004 [Bodo Moeller (Google)]
2008 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2009 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2010 - added some more tests to do_tests.pl
2011 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2012 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2013 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2014 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2015 - various changes to netware.pl to enable gcc-cross builds on Win32
2017 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2018 - various changes to fix missing prototype warnings
2019 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2020 - added AES, WHIRLPOOL and CPUID assembler code to build files
2021 - added missing AES assembler make rules to mk1mf.pl
2022 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2023 [Guenter Knauf <eflash@gmx.net>]
2025 *) Implement certificate status request TLS extension defined in RFC3546.
2026 A client can set the appropriate parameters and receive the encoded
2027 OCSP response via a callback. A server can query the supplied parameters
2028 and set the encoded OCSP response in the callback. Add simplified examples
2029 to s_client and s_server.
2032 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2034 *) Fix various bugs:
2035 + Binary incompatibility of ssl_ctx_st structure
2036 + DTLS interoperation with non-compliant servers
2037 + Don't call get_session_cb() without proposed session
2038 + Fix ia64 assembler code
2039 [Andy Polyakov, Steve Henson]
2041 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2043 *) DTLS Handshake overhaul. There were longstanding issues with
2044 OpenSSL DTLS implementation, which were making it impossible for
2045 RFC 4347 compliant client to communicate with OpenSSL server.
2046 Unfortunately just fixing these incompatibilities would "cut off"
2047 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2048 server keeps tolerating non RFC compliant syntax. The opposite is
2049 not true, 0.9.8f client can not communicate with earlier server.
2050 This update even addresses CVE-2007-4995.
2053 *) Changes to avoid need for function casts in OpenSSL: some compilers
2054 (gcc 4.2 and later) reject their use.
2055 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2058 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2059 RFC4507bis. The encrypted ticket format is an encrypted encoded
2060 SSL_SESSION structure, that way new session features are automatically
2063 If a client application caches session in an SSL_SESSION structure
2064 support is transparent because tickets are now stored in the encoded
2067 The SSL_CTX structure automatically generates keys for ticket
2068 protection in servers so again support should be possible
2069 with no application modification.
2071 If a client or server wishes to disable RFC4507 support then the option
2072 SSL_OP_NO_TICKET can be set.
2074 Add a TLS extension debugging callback to allow the contents of any client
2075 or server extensions to be examined.
2077 This work was sponsored by Google.
2080 *) Add initial support for TLS extensions, specifically for the server_name
2081 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2082 have new members for a host name. The SSL data structure has an
2083 additional member SSL_CTX *initial_ctx so that new sessions can be
2084 stored in that context to allow for session resumption, even after the
2085 SSL has been switched to a new SSL_CTX in reaction to a client's
2086 server_name extension.
2088 New functions (subject to change):
2090 SSL_get_servername()
2091 SSL_get_servername_type()
2094 New CTRL codes and macros (subject to change):
2096 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2097 - SSL_CTX_set_tlsext_servername_callback()
2098 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2099 - SSL_CTX_set_tlsext_servername_arg()
2100 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2102 openssl s_client has a new '-servername ...' option.
2104 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2105 '-key2 ...', '-servername_fatal' (subject to change). This allows
2106 testing the HostName extension for a specific single host name ('-cert'
2107 and '-key' remain fallbacks for handshakes without HostName
2108 negotiation). If the unrecogninzed_name alert has to be sent, this by
2109 default is a warning; it becomes fatal with the '-servername_fatal'
2112 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2114 *) Add AES and SSE2 assembly language support to VC++ build.
2117 *) Mitigate attack on final subtraction in Montgomery reduction.
2120 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2121 (which previously caused an internal error).
2124 *) Squeeze another 10% out of IGE mode when in != out.
2127 *) AES IGE mode speedup.
2128 [Dean Gaudet (Google)]
2130 *) Add the Korean symmetric 128-bit cipher SEED (see
2131 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2132 add SEED ciphersuites from RFC 4162:
2134 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2135 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2136 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2137 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2139 To minimize changes between patchlevels in the OpenSSL 0.9.8
2140 series, SEED remains excluded from compilation unless OpenSSL
2141 is configured with 'enable-seed'.
2142 [KISA, Bodo Moeller]
2144 *) Mitigate branch prediction attacks, which can be practical if a
2145 single processor is shared, allowing a spy process to extract
2146 information. For detailed background information, see
2147 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2148 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2149 and Necessary Software Countermeasures"). The core of the change
2150 are new versions BN_div_no_branch() and
2151 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2152 respectively, which are slower, but avoid the security-relevant
2153 conditional branches. These are automatically called by BN_div()
2154 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2155 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2156 remove a conditional branch.
2158 BN_FLG_CONSTTIME is the new name for the previous
2159 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2160 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2161 in the exponent causes BN_mod_exp_mont() to use the alternative
2162 implementation in BN_mod_exp_mont_consttime().) The old name
2163 remains as a deprecated alias.
2165 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2166 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2167 constant-time implementations for more than just exponentiation.
2168 Here too the old name is kept as a deprecated alias.
2170 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2171 the BN_BLINDING structure gets an independent copy of the
2172 modulus. This means that the previous "BIGNUM *m" argument to
2173 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2174 essentially becomes "const BIGNUM *m", although we can't actually
2175 change this in the header file before 0.9.9. It allows
2176 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2177 enable BN_FLG_CONSTTIME.
2179 [Matthew D Wood (Intel Corp)]
2181 *) In the SSL/TLS server implementation, be strict about session ID
2182 context matching (which matters if an application uses a single
2183 external cache for different purposes). Previously,
2184 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2185 set. This did ensure strict client verification, but meant that,
2186 with applications using a single external cache for quite
2187 different requirements, clients could circumvent ciphersuite
2188 restrictions for a given session ID context by starting a session
2189 in a different context.
2192 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2193 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2194 authentication-only ciphersuites.
2197 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2198 not complete and could lead to a possible single byte overflow
2199 (CVE-2007-5135) [Ben Laurie]
2201 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2203 *) Since AES128 and AES256 (and similarly Camellia128 and
2204 Camellia256) share a single mask bit in the logic of
2205 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2206 kludge to work properly if AES128 is available and AES256 isn't
2207 (or if Camellia128 is available and Camellia256 isn't).
2210 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2211 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2212 When a point or a seed is encoded in a BIT STRING, we need to
2213 prevent the removal of trailing zero bits to get the proper DER
2214 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2215 of a NamedBitList, for which trailing 0 bits need to be removed.)
2218 *) Have SSL/TLS server implementation tolerate "mismatched" record
2219 protocol version while receiving ClientHello even if the
2220 ClientHello is fragmented. (The server can't insist on the
2221 particular protocol version it has chosen before the ServerHello
2222 message has informed the client about his choice.)
2225 *) Add RFC 3779 support.
2226 [Rob Austein for ARIN, Ben Laurie]
2228 *) Load error codes if they are not already present instead of using a
2229 static variable. This allows them to be cleanly unloaded and reloaded.
2230 Improve header file function name parsing.
2233 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2234 or CAPABILITY handshake as required by RFCs.
2237 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2239 *) Introduce limits to prevent malicious keys being able to
2240 cause a denial of service. (CVE-2006-2940)
2241 [Steve Henson, Bodo Moeller]
2243 *) Fix ASN.1 parsing of certain invalid structures that can result
2244 in a denial of service. (CVE-2006-2937) [Steve Henson]
2246 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2247 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2249 *) Fix SSL client code which could crash if connecting to a
2250 malicious SSLv2 server. (CVE-2006-4343)
2251 [Tavis Ormandy and Will Drewry, Google Security Team]
2253 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2254 match only those. Before that, "AES256-SHA" would be interpreted
2255 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2256 the same strength classification in 0.9.7h) as we currently only
2257 have a single AES bit in the ciphersuite description bitmap.
2258 That change, however, also applied to ciphersuite strings such as
2259 "RC4-MD5" that intentionally matched multiple ciphersuites --
2260 namely, SSL 2.0 ciphersuites in addition to the more common ones
2261 from SSL 3.0/TLS 1.0.
2263 So we change the selection algorithm again: Naming an explicit
2264 ciphersuite selects this one ciphersuite, and any other similar
2265 ciphersuite (same bitmap) from *other* protocol versions.
2266 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2267 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2269 Since SSL 2.0 does not have any ciphersuites for which the
2270 128/256 bit distinction would be relevant, this works for now.
2271 The proper fix will be to use different bits for AES128 and
2272 AES256, which would have avoided the problems from the beginning;
2273 however, bits are scarce, so we can only do this in a new release
2274 (not just a patchlevel) when we can change the SSL_CIPHER
2275 definition to split the single 'unsigned long mask' bitmap into
2276 multiple values to extend the available space.
2280 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2282 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2283 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2285 *) Add AES IGE and biIGE modes.
2288 *) Change the Unix randomness entropy gathering to use poll() when
2289 possible instead of select(), since the latter has some
2290 undesirable limitations.
2291 [Darryl Miles via Richard Levitte and Bodo Moeller]
2293 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2294 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2295 cannot be implicitly activated as part of, e.g., the "AES" alias.
2296 However, please upgrade to OpenSSL 0.9.9[-dev] for
2297 non-experimental use of the ECC ciphersuites to get TLS extension
2298 support, which is required for curve and point format negotiation
2299 to avoid potential handshake problems.
2302 *) Disable rogue ciphersuites:
2304 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2305 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2306 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2308 The latter two were purportedly from
2309 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2312 Also deactivate the remaining ciphersuites from
2313 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2314 unofficial, and the ID has long expired.
2317 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2318 dual-core machines) and other potential thread-safety issues.
2321 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2322 versions), which is now available for royalty-free use
2323 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2324 Also, add Camellia TLS ciphersuites from RFC 4132.
2326 To minimize changes between patchlevels in the OpenSSL 0.9.8
2327 series, Camellia remains excluded from compilation unless OpenSSL
2328 is configured with 'enable-camellia'.
2331 *) Disable the padding bug check when compression is in use. The padding
2332 bug check assumes the first packet is of even length, this is not
2333 necessarily true if compresssion is enabled and can result in false
2334 positives causing handshake failure. The actual bug test is ancient
2335 code so it is hoped that implementations will either have fixed it by
2336 now or any which still have the bug do not support compression.
2339 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2341 *) When applying a cipher rule check to see if string match is an explicit
2342 cipher suite and only match that one cipher suite if it is.
2345 *) Link in manifests for VC++ if needed.
2346 [Austin Ziegler <halostatue@gmail.com>]
2348 *) Update support for ECC-based TLS ciphersuites according to
2349 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2350 TLS extensions, which are supported starting with the 0.9.9
2351 branch, not in the OpenSSL 0.9.8 branch).
2354 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2355 opaque EVP_CIPHER_CTX handling.
2358 *) Fixes and enhancements to zlib compression code. We now only use
2359 "zlib1.dll" and use the default __cdecl calling convention on Win32
2360 to conform with the standards mentioned here:
2361 http://www.zlib.net/DLL_FAQ.txt
2362 Static zlib linking now works on Windows and the new --with-zlib-include
2363 --with-zlib-lib options to Configure can be used to supply the location
2364 of the headers and library. Gracefully handle case where zlib library
2368 *) Several fixes and enhancements to the OID generation code. The old code
2369 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2370 handle numbers larger than ULONG_MAX, truncated printing and had a
2371 non standard OBJ_obj2txt() behaviour.
2374 *) Add support for building of engines under engine/ as shared libraries
2375 under VC++ build system.
2378 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2379 Hopefully, we will not see any false combination of paths any more.
2382 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2384 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2385 (part of SSL_OP_ALL). This option used to disable the
2386 countermeasure against man-in-the-middle protocol-version
2387 rollback in the SSL 2.0 server implementation, which is a bad
2388 idea. (CVE-2005-2969)
2390 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2391 for Information Security, National Institute of Advanced Industrial
2392 Science and Technology [AIST], Japan)]
2394 *) Add two function to clear and return the verify parameter flags.
2397 *) Keep cipherlists sorted in the source instead of sorting them at
2398 runtime, thus removing the need for a lock.
2401 *) Avoid some small subgroup attacks in Diffie-Hellman.
2402 [Nick Mathewson and Ben Laurie]
2404 *) Add functions for well-known primes.
2407 *) Extended Windows CE support.
2408 [Satoshi Nakamura and Andy Polyakov]
2410 *) Initialize SSL_METHOD structures at compile time instead of during
2411 runtime, thus removing the need for a lock.
2414 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2415 attempting to decrypt each encrypted key in turn. Add support to
2419 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2421 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2424 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2427 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2428 key into the same file any more.
2431 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2434 *) Add -utf8 command line and config file option to 'ca'.
2435 [Stefan <stf@udoma.org]
2437 *) Removed the macro des_crypt(), as it seems to conflict with some
2438 libraries. Use DES_crypt().
2441 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2442 involves renaming the source and generated shared-libs for
2443 both. The engines will accept the corrected or legacy ids
2444 ('ncipher' and '4758_cca' respectively) when binding. NB,
2445 this only applies when building 'shared'.
2446 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2448 *) Add attribute functions to EVP_PKEY structure. Modify
2449 PKCS12_create() to recognize a CSP name attribute and
2450 use it. Make -CSP option work again in pkcs12 utility.
2453 *) Add new functionality to the bn blinding code:
2454 - automatic re-creation of the BN_BLINDING parameters after
2455 a fixed number of uses (currently 32)
2456 - add new function for parameter creation
2457 - introduce flags to control the update behaviour of the
2458 BN_BLINDING parameters
2459 - hide BN_BLINDING structure
2460 Add a second BN_BLINDING slot to the RSA structure to improve
2461 performance when a single RSA object is shared among several
2465 *) Add support for DTLS.
2466 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2468 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2469 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2472 *) Remove buggy and incompletet DH cert support from
2473 ssl/ssl_rsa.c and ssl/s3_both.c
2476 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2477 the apps/openssl applications.
2480 *) Compile clean with "-Wall -Wmissing-prototypes
2481 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2482 DEBUG_SAFESTACK must also be set.
2485 *) Change ./Configure so that certain algorithms can be disabled by default.
2486 The new counterpiece to "no-xxx" is "enable-xxx".
2488 The patented RC5 and MDC2 algorithms will now be disabled unless
2489 "enable-rc5" and "enable-mdc2", respectively, are specified.
2491 (IDEA remains enabled despite being patented. This is because IDEA
2492 is frequently required for interoperability, and there is no license
2493 fee for non-commercial use. As before, "no-idea" can be used to
2494 avoid this algorithm.)
2498 *) Add processing of proxy certificates (see RFC 3820). This work was
2499 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2500 EGEE (Enabling Grids for E-science in Europe).
2503 *) RC4 performance overhaul on modern architectures/implementations, such
2504 as Intel P4, IA-64 and AMD64.
2507 *) New utility extract-section.pl. This can be used specify an alternative
2508 section number in a pod file instead of having to treat each file as
2509 a separate case in Makefile. This can be done by adding two lines to the
2512 =for comment openssl_section:XXX
2514 The blank line is mandatory.
2518 *) New arguments -certform, -keyform and -pass for s_client and s_server
2519 to allow alternative format key and certificate files and passphrase
2523 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2524 update associated structures and add various utility functions.
2526 Add new policy related verify parameters, include policy checking in
2527 standard verify code. Enhance 'smime' application with extra parameters
2528 to support policy checking and print out.
2531 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2532 Nehemiah processors. These extensions support AES encryption in hardware
2533 as well as RNG (though RNG support is currently disabled).
2534 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2536 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2539 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2540 [Andy Polyakov and a number of other people]
2542 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2543 implementation contributed by IBM.
2544 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2546 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2547 exponent rather than 'unsigned long'. There is a corresponding change to
2548 the new 'rsa_keygen' element of the RSA_METHOD structure.
2549 [Jelte Jansen, Geoff Thorpe]
2551 *) Functionality for creating the initial serial number file is now
2552 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2554 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2555 number file to 1, which is bound to cause problems. To avoid
2556 the problems while respecting compatibility between different 0.9.7
2557 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2558 CA.pl for serial number initialization. With the new release 0.9.8,
2559 we can fix the problem directly in the 'ca' utility.)
2562 *) Reduced header interdepencies by declaring more opaque objects in
2563 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2564 give fewer recursive includes, which could break lazy source code - so
2565 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2566 developers should define this symbol when building and using openssl to
2567 ensure they track the recommended behaviour, interfaces, [etc], but
2568 backwards-compatible behaviour prevails when this isn't defined.
2571 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2574 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2575 This will generate a random key of the appropriate length based on the
2576 cipher context. The EVP_CIPHER can provide its own random key generation
2577 routine to support keys of a specific form. This is used in the des and
2578 3des routines to generate a key of the correct parity. Update S/MIME
2579 code to use new functions and hence generate correct parity DES keys.
2580 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2581 valid (weak or incorrect parity).
2584 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2585 as looking them up. This is useful when the verified structure may contain
2586 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2587 present unless the new PKCS7_NO_CRL flag is asserted.
2590 *) Extend ASN1 oid configuration module. It now additionally accepts the
2593 shortName = some long name, 1.2.3.4
2596 *) Reimplemented the BN_CTX implementation. There is now no more static
2597 limitation on the number of variables it can handle nor the depth of the
2598 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2599 information can now expand as required, and rather than having a single
2600 static array of bignums, BN_CTX now uses a linked-list of such arrays
2601 allowing it to expand on demand whilst maintaining the usefulness of
2602 BN_CTX's "bundling".
2605 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2606 to allow all RSA operations to function using a single BN_CTX.
2609 *) Preliminary support for certificate policy evaluation and checking. This
2610 is initially intended to pass the tests outlined in "Conformance Testing
2611 of Relying Party Client Certificate Path Processing Logic" v1.07.
2614 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2615 remained unused and not that useful. A variety of other little bignum
2616 tweaks and fixes have also been made continuing on from the audit (see
2620 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2621 associated ASN1, EVP and SSL functions and old ASN1 macros.
2624 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2625 and this should never fail. So the return value from the use of
2626 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2627 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2630 *) BN_CTX_get() should return zero-valued bignums, providing the same
2631 initialised value as BN_new().
2632 [Geoff Thorpe, suggested by Ulf Möller]
2634 *) Support for inhibitAnyPolicy certificate extension.
2637 *) An audit of the BIGNUM code is underway, for which debugging code is
2638 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2639 is considered valid when processing BIGNUMs, and causes execution to
2640 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2641 further steps are taken to deliberately pollute unused data in BIGNUM
2642 structures to try and expose faulty code further on. For now, openssl will
2643 (in its default mode of operation) continue to tolerate the inconsistent
2644 forms that it has tolerated in the past, but authors and packagers should
2645 consider trying openssl and their own applications when compiled with
2646 these debugging symbols defined. It will help highlight potential bugs in
2647 their own code, and will improve the test coverage for OpenSSL itself. At
2648 some point, these tighter rules will become openssl's default to improve
2649 maintainability, though the assert()s and other overheads will remain only
2650 in debugging configurations. See bn.h for more details.
2651 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2653 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2654 that can only be obtained through BN_CTX_new() (which implicitly
2655 initialises it). The presence of this function only made it possible
2656 to overwrite an existing structure (and cause memory leaks).
2659 *) Because of the callback-based approach for implementing LHASH as a
2660 template type, lh_insert() adds opaque objects to hash-tables and
2661 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2662 to clean up those corresponding objects before destroying the hash table
2663 (and losing the object pointers). So some over-zealous constifications in
2664 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2665 objects as "const" and the lh_doall[_arg] callback wrappers are not
2666 prototyped to have "const" restrictions on the object pointers they are
2667 given (and so aren't required to cast them away any more).
2670 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2671 (speed) prefers to use its own implementation. The two implementations
2672 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2673 its object type properly exposed (MS_TM) instead of casting to/from "char
2674 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2675 aren't necessarily the greatest nomenclatures - but this is what was used
2676 internally to the implementation so I've used that for now.
2679 *) Ensure that deprecated functions do not get compiled when
2680 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2681 the self-tests were still using deprecated key-generation functions so
2682 these have been updated also.
2685 *) Reorganise PKCS#7 code to separate the digest location functionality
2686 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2687 New function PKCS7_set_digest() to set the digest type for PKCS#7
2688 digestedData type. Add additional code to correctly generate the
2689 digestedData type and add support for this type in PKCS7 initialization
2693 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2694 structure of type "other".
2697 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2698 sure the loop does correctly stop and breaking ("division by zero")
2699 modulus operations are not performed. The (pre-generated) prime
2700 table crypto/bn/bn_prime.h was already correct, but it could not be
2701 re-generated on some platforms because of the "division by zero"
2702 situation in the script.
2703 [Ralf S. Engelschall]
2705 *) Update support for ECC-based TLS ciphersuites according to
2706 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2707 SHA-1 now is only used for "small" curves (where the
2708 representation of a field element takes up to 24 bytes); for
2709 larger curves, the field element resulting from ECDH is directly
2710 used as premaster secret.
2711 [Douglas Stebila (Sun Microsystems Laboratories)]
2713 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2714 curve secp160r1 to the tests.
2715 [Douglas Stebila (Sun Microsystems Laboratories)]
2717 *) Add the possibility to load symbols globally with DSO.
2718 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2720 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2721 control of the error stack.
2724 *) Add support for STORE in ENGINE.
2727 *) Add the STORE type. The intention is to provide a common interface
2728 to certificate and key stores, be they simple file-based stores, or
2729 HSM-type store, or LDAP stores, or...
2730 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2733 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2734 pass a list of arguments to any function as well as provide a way
2735 for a function to pass data back to the caller.
2738 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2739 works like BUF_strdup() but can be used to duplicate a portion of
2740 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2744 *) Add the function sk_find_ex() which works like sk_find(), but will
2745 return an index to an element even if an exact match couldn't be
2746 found. The index is guaranteed to point at the element where the
2747 searched-for key would be inserted to preserve sorting order.
2750 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2751 takes an extra flags argument for optional functionality. Currently,
2752 the following flags are defined:
2754 OBJ_BSEARCH_VALUE_ON_NOMATCH
2755 This one gets OBJ_bsearch_ex() to return a pointer to the first
2756 element where the comparing function returns a negative or zero
2759 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2760 This one gets OBJ_bsearch_ex() to return a pointer to the first
2761 element where the comparing function returns zero. This is useful
2762 if there are more than one element where the comparing function
2766 *) Make it possible to create self-signed certificates with 'openssl ca'
2767 in such a way that the self-signed certificate becomes part of the
2768 CA database and uses the same mechanisms for serial number generation
2769 as all other certificate signing. The new flag '-selfsign' enables
2770 this functionality. Adapt CA.sh and CA.pl.in.
2773 *) Add functionality to check the public key of a certificate request
2774 against a given private. This is useful to check that a certificate
2775 request can be signed by that key (self-signing).
2778 *) Make it possible to have multiple active certificates with the same
2779 subject in the CA index file. This is done only if the keyword
2780 'unique_subject' is set to 'no' in the main CA section (default
2781 if 'CA_default') of the configuration file. The value is saved
2782 with the database itself in a separate index attribute file,
2783 named like the index file with '.attr' appended to the name.
2786 *) Generate muti valued AVAs using '+' notation in config files for
2790 *) Support for nameConstraints certificate extension.
2793 *) Support for policyConstraints certificate extension.
2796 *) Support for policyMappings certificate extension.
2799 *) Make sure the default DSA_METHOD implementation only uses its
2800 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2801 and change its own handlers to be NULL so as to remove unnecessary
2802 indirection. This lets alternative implementations fallback to the
2803 default implementation more easily.
2806 *) Support for directoryName in GeneralName related extensions
2810 *) Make it possible to link applications using Makefile.shared.
2811 Make that possible even when linking against static libraries!
2814 *) Support for single pass processing for S/MIME signing. This now
2815 means that S/MIME signing can be done from a pipe, in addition
2816 cleartext signing (multipart/signed type) is effectively streaming
2817 and the signed data does not need to be all held in memory.
2819 This is done with a new flag PKCS7_STREAM. When this flag is set
2820 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2821 is done after the data is output (and digests calculated) in
2822 SMIME_write_PKCS7().
2825 *) Add full support for -rpath/-R, both in shared libraries and
2826 applications, at least on the platforms where it's known how
2830 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2831 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2832 will now compute a table of multiples of the generator that
2833 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2834 faster (notably in the case of a single point multiplication,
2835 scalar * generator).
2836 [Nils Larsch, Bodo Moeller]
2838 *) IPv6 support for certificate extensions. The various extensions
2839 which use the IP:a.b.c.d can now take IPv6 addresses using the
2840 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2844 *) Added an ENGINE that implements RSA by performing private key
2845 exponentiations with the GMP library. The conversions to and from
2846 GMP's mpz_t format aren't optimised nor are any montgomery forms
2847 cached, and on x86 it appears OpenSSL's own performance has caught up.
2848 However there are likely to be other architectures where GMP could
2849 provide a boost. This ENGINE is not built in by default, but it can be
2850 specified at Configure time and should be accompanied by the necessary
2851 linker additions, eg;
2852 ./config -DOPENSSL_USE_GMP -lgmp
2855 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2856 testing availability of engines with "-t" - the old behaviour is
2857 produced by increasing the feature's verbosity with "-tt".
2860 *) ECDSA routines: under certain error conditions uninitialized BN objects
2861 could be freed. Solution: make sure initialization is performed early
2862 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2866 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2867 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2868 software implementations. For DSA and DH, parameter generation can
2869 also be overriden by providing the appropriate method callbacks.
2872 *) Change the "progress" mechanism used in key-generation and
2873 primality testing to functions that take a new BN_GENCB pointer in
2874 place of callback/argument pairs. The new API functions have "_ex"
2875 postfixes and the older functions are reimplemented as wrappers for
2876 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2877 declarations of the old functions to help (graceful) attempts to
2878 migrate to the new functions. Also, the new key-generation API
2879 functions operate on a caller-supplied key-structure and return
2880 success/failure rather than returning a key or NULL - this is to
2881 help make "keygen" another member function of RSA_METHOD etc.
2883 Example for using the new callback interface:
2885 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2889 BN_GENCB_set(&my_cb, my_callback, my_arg);
2891 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2892 /* For the meaning of a, b in calls to my_callback(), see the
2893 * documentation of the function that calls the callback.
2894 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2895 * my_callback should return 1 if it wants BN_is_prime_ex()
2896 * to continue, or 0 to stop.
2901 *) Change the ZLIB compression method to be stateful, and make it
2902 available to TLS with the number defined in
2903 draft-ietf-tls-compression-04.txt.
2906 *) Add the ASN.1 structures and functions for CertificatePair, which
2907 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2909 CertificatePair ::= SEQUENCE {
2910 forward [0] Certificate OPTIONAL,
2911 reverse [1] Certificate OPTIONAL,
2912 -- at least one of the pair shall be present -- }
2914 Also implement the PEM functions to read and write certificate
2915 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2917 This needed to be defined, mostly for the sake of the LDAP
2918 attribute crossCertificatePair, but may prove useful elsewhere as
2922 *) Make it possible to inhibit symlinking of shared libraries in
2923 Makefile.shared, for Cygwin's sake.
2926 *) Extend the BIGNUM API by creating a function
2927 void BN_set_negative(BIGNUM *a, int neg);
2928 and a macro that behave like
2929 int BN_is_negative(const BIGNUM *a);
2931 to avoid the need to access 'a->neg' directly in applications.
2934 *) Implement fast modular reduction for pseudo-Mersenne primes
2935 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2936 EC_GROUP_new_curve_GFp() will now automatically use this
2938 [Nils Larsch <nla@trustcenter.de>]
2940 *) Add new lock type (CRYPTO_LOCK_BN).
2943 *) Change the ENGINE framework to automatically load engines
2944 dynamically from specific directories unless they could be
2945 found to already be built in or loaded. Move all the
2946 current engines except for the cryptodev one to a new
2948 The engines in engines/ are built as shared libraries if
2949 the "shared" options was given to ./Configure or ./config.
2950 Otherwise, they are inserted in libcrypto.a.
2951 /usr/local/ssl/engines is the default directory for dynamic
2952 engines, but that can be overriden at configure time through
2953 the usual use of --prefix and/or --openssldir, and at run
2954 time with the environment variable OPENSSL_ENGINES.
2955 [Geoff Thorpe and Richard Levitte]
2957 *) Add Makefile.shared, a helper makefile to build shared
2958 libraries. Addapt Makefile.org.
2961 *) Add version info to Win32 DLLs.
2962 [Peter 'Luna' Runestig" <peter@runestig.com>]
2964 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2965 can be added using this API to created arbitrary PKCS#12
2966 files while avoiding the low level API.
2968 New options to PKCS12_create(), key or cert can be NULL and
2969 will then be omitted from the output file. The encryption
2970 algorithm NIDs can be set to -1 for no encryption, the mac
2971 iteration count can be set to 0 to omit the mac.
2973 Enhance pkcs12 utility by making the -nokeys and -nocerts
2974 options work when creating a PKCS#12 file. New option -nomac
2975 to omit the mac, NONE can be set for an encryption algorithm.
2976 New code is modified to use the enhanced PKCS12_create()
2977 instead of the low level API.
2980 *) Extend ASN1 encoder to support indefinite length constructed
2981 encoding. This can output sequences tags and octet strings in
2982 this form. Modify pk7_asn1.c to support indefinite length
2983 encoding. This is experimental and needs additional code to
2984 be useful, such as an ASN1 bio and some enhanced streaming
2987 Extend template encode functionality so that tagging is passed
2988 down to the template encoder.
2991 *) Let 'openssl req' fail if an argument to '-newkey' is not
2992 recognized instead of using RSA as a default.
2995 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2996 As these are not official, they are not included in "ALL";
2997 the "ECCdraft" ciphersuite group alias can be used to select them.
2998 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3000 *) Add ECDH engine support.
3001 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3003 *) Add ECDH in new directory crypto/ecdh/.
3004 [Douglas Stebila (Sun Microsystems Laboratories)]
3006 *) Let BN_rand_range() abort with an error after 100 iterations
3007 without success (which indicates a broken PRNG).
3010 *) Change BN_mod_sqrt() so that it verifies that the input value
3011 is really the square of the return value. (Previously,
3012 BN_mod_sqrt would show GIGO behaviour.)
3015 *) Add named elliptic curves over binary fields from X9.62, SECG,
3016 and WAP/WTLS; add OIDs that were still missing.
3018 [Sheueling Chang Shantz and Douglas Stebila
3019 (Sun Microsystems Laboratories)]
3021 *) Extend the EC library for elliptic curves over binary fields
3022 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3025 EC_GF2m_simple_method
3029 EC_GROUP_new_curve_GF2m
3030 EC_GROUP_set_curve_GF2m
3031 EC_GROUP_get_curve_GF2m
3032 EC_POINT_set_affine_coordinates_GF2m
3033 EC_POINT_get_affine_coordinates_GF2m
3034 EC_POINT_set_compressed_coordinates_GF2m
3036 Point compression for binary fields is disabled by default for
3037 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3040 As binary polynomials are represented as BIGNUMs, various members
3041 of the EC_GROUP and EC_POINT data structures can be shared
3042 between the implementations for prime fields and binary fields;
3043 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3044 are essentially identical to their ..._GFp counterparts.
3045 (For simplicity, the '..._GFp' prefix has been dropped from
3046 various internal method names.)
3048 An internal 'field_div' method (similar to 'field_mul' and
3049 'field_sqr') has been added; this is used only for binary fields.
3051 [Sheueling Chang Shantz and Douglas Stebila
3052 (Sun Microsystems Laboratories)]
3054 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3055 through methods ('mul', 'precompute_mult').
3057 The generic implementations (now internally called 'ec_wNAF_mul'
3058 and 'ec_wNAF_precomputed_mult') remain the default if these
3059 methods are undefined.
3061 [Sheueling Chang Shantz and Douglas Stebila
3062 (Sun Microsystems Laboratories)]
3064 *) New function EC_GROUP_get_degree, which is defined through
3065 EC_METHOD. For curves over prime fields, this returns the bit
3066 length of the modulus.
3068 [Sheueling Chang Shantz and Douglas Stebila
3069 (Sun Microsystems Laboratories)]
3071 *) New functions EC_GROUP_dup, EC_POINT_dup.
3072 (These simply call ..._new and ..._copy).
3074 [Sheueling Chang Shantz and Douglas Stebila
3075 (Sun Microsystems Laboratories)]
3077 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3078 Polynomials are represented as BIGNUMs (where the sign bit is not
3079 used) in the following functions [macros]:
3082 BN_GF2m_sub [= BN_GF2m_add]
3083 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3084 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3085 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3087 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3088 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3089 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3090 BN_GF2m_cmp [= BN_ucmp]
3092 (Note that only the 'mod' functions are actually for fields GF(2^m).
3093 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3095 For some functions, an the irreducible polynomial defining a
3096 field can be given as an 'unsigned int[]' with strictly
3097 decreasing elements giving the indices of those bits that are set;
3098 i.e., p[] represents the polynomial
3099 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3101 p[0] > p[1] > ... > p[k] = 0.
3102 This applies to the following functions:
3107 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3108 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3110 BN_GF2m_mod_sqrt_arr
3111 BN_GF2m_mod_solve_quad_arr
3115 Conversion can be performed by the following functions:
3120 bntest.c has additional tests for binary polynomial arithmetic.
3122 Two implementations for BN_GF2m_mod_div() are available.
3123 The default algorithm simply uses BN_GF2m_mod_inv() and
3124 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3125 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3126 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3128 [Sheueling Chang Shantz and Douglas Stebila
3129 (Sun Microsystems Laboratories)]
3131 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3132 functionality is disabled at compile-time.
3133 [Douglas Stebila <douglas.stebila@sun.com>]
3135 *) Change default behaviour of 'openssl asn1parse' so that more
3136 information is visible when viewing, e.g., a certificate:
3138 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3139 mode the content of non-printable OCTET STRINGs is output in a
3140 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3141 avoid the appearance of a printable string.
3142 [Nils Larsch <nla@trustcenter.de>]
3144 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3146 EC_GROUP_set_asn1_flag()
3147 EC_GROUP_get_asn1_flag()
3148 EC_GROUP_set_point_conversion_form()
3149 EC_GROUP_get_point_conversion_form()
3150 These control ASN1 encoding details:
3151 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3152 has been set to OPENSSL_EC_NAMED_CURVE.
3153 - Points are encoded in uncompressed form by default; options for
3154 asn1_for are as for point2oct, namely
3155 POINT_CONVERSION_COMPRESSED
3156 POINT_CONVERSION_UNCOMPRESSED
3157 POINT_CONVERSION_HYBRID
3159 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3162 EC_GROUP_get0_seed()
3163 EC_GROUP_get_seed_len()
3164 This is used only for ASN1 purposes (so far).
3165 [Nils Larsch <nla@trustcenter.de>]
3167 *) Add 'field_type' member to EC_METHOD, which holds the NID
3168 of the appropriate field type OID. The new function
3169 EC_METHOD_get_field_type() returns this value.
3170 [Nils Larsch <nla@trustcenter.de>]
3175 EC_POINT_point2hex()
3176 EC_POINT_hex2point()
3177 providing useful interfaces to EC_POINT_point2oct() and
3178 EC_POINT_oct2point().
3179 [Nils Larsch <nla@trustcenter.de>]
3181 *) Change internals of the EC library so that the functions
3182 EC_GROUP_set_generator()
3183 EC_GROUP_get_generator()
3184 EC_GROUP_get_order()
3185 EC_GROUP_get_cofactor()
3186 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3187 to methods, which would lead to unnecessary code duplication when
3188 adding different types of curves.
3189 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3191 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3192 arithmetic, and such that modified wNAFs are generated
3193 (which avoid length expansion in many cases).
3196 *) Add a function EC_GROUP_check_discriminant() (defined via
3197 EC_METHOD) that verifies that the curve discriminant is non-zero.
3199 Add a function EC_GROUP_check() that makes some sanity tests
3200 on a EC_GROUP, its generator and order. This includes
3201 EC_GROUP_check_discriminant().
3202 [Nils Larsch <nla@trustcenter.de>]
3204 *) Add ECDSA in new directory crypto/ecdsa/.
3206 Add applications 'openssl ecparam' and 'openssl ecdsa'
3207 (these are based on 'openssl dsaparam' and 'openssl dsa').
3209 ECDSA support is also included in various other files across the
3210 library. Most notably,
3211 - 'openssl req' now has a '-newkey ecdsa:file' option;
3212 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3213 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3214 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3215 them suitable for ECDSA where domain parameters must be
3216 extracted before the specific public key;
3217 - ECDSA engine support has been added.
3218 [Nils Larsch <nla@trustcenter.de>]
3220 *) Include some named elliptic curves, and add OIDs from X9.62,
3221 SECG, and WAP/WTLS. Each curve can be obtained from the new
3223 EC_GROUP_new_by_curve_name(),
3224 and the list of available named curves can be obtained with
3225 EC_get_builtin_curves().
3226 Also add a 'curve_name' member to EC_GROUP objects, which can be
3228 EC_GROUP_set_curve_name()
3229 EC_GROUP_get_curve_name()
3230 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3232 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3233 was actually never needed) and in BN_mul(). The removal in BN_mul()
3234 required a small change in bn_mul_part_recursive() and the addition
3235 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3236 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3237 bn_sub_words() and bn_add_words() except they take arrays with
3241 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3243 *) Cleanse PEM buffers before freeing them since they may contain
3245 [Benjamin Bennett <ben@psc.edu>]
3247 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3248 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3249 authentication-only ciphersuites.
3252 *) Since AES128 and AES256 share a single mask bit in the logic of
3253 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3254 kludge to work properly if AES128 is available and AES256 isn't.
3257 *) Expand security boundary to match 1.1.1 module.
3260 *) Remove redundant features: hash file source, editing of test vectors
3261 modify fipsld to use external fips_premain.c signature.
3264 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3265 run algorithm test programs.
3268 *) Make algorithm test programs more tolerant of whitespace.
3271 *) Have SSL/TLS server implementation tolerate "mismatched" record
3272 protocol version while receiving ClientHello even if the
3273 ClientHello is fragmented. (The server can't insist on the
3274 particular protocol version it has chosen before the ServerHello
3275 message has informed the client about his choice.)
3278 *) Load error codes if they are not already present instead of using a
3279 static variable. This allows them to be cleanly unloaded and reloaded.
3282 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3284 *) Introduce limits to prevent malicious keys being able to
3285 cause a denial of service. (CVE-2006-2940)
3286 [Steve Henson, Bodo Moeller]
3288 *) Fix ASN.1 parsing of certain invalid structures that can result
3289 in a denial of service. (CVE-2006-2937) [Steve Henson]
3291 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3292 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3294 *) Fix SSL client code which could crash if connecting to a
3295 malicious SSLv2 server. (CVE-2006-4343)
3296 [Tavis Ormandy and Will Drewry, Google Security Team]
3298 *) Change ciphersuite string processing so that an explicit
3299 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3300 will no longer include "AES128-SHA"), and any other similar
3301 ciphersuite (same bitmap) from *other* protocol versions (so that
3302 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3303 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3304 changes from 0.9.8b and 0.9.8d.
3307 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3309 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3310 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3312 *) Change the Unix randomness entropy gathering to use poll() when
3313 possible instead of select(), since the latter has some
3314 undesirable limitations.
3315 [Darryl Miles via Richard Levitte and Bodo Moeller]
3317 *) Disable rogue ciphersuites:
3319 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3320 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3321 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3323 The latter two were purportedly from
3324 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3327 Also deactive the remaining ciphersuites from
3328 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3329 unofficial, and the ID has long expired.
3332 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3333 dual-core machines) and other potential thread-safety issues.
3336 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3338 *) Adapt fipsld and the build system to link against the validated FIPS
3339 module in FIPS mode.
3342 *) Fixes for VC++ 2005 build under Windows.
3345 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3346 from a Windows bash shell such as MSYS. It is autodetected from the
3347 "config" script when run from a VC++ environment. Modify standard VC++
3348 build to use fipscanister.o from the GNU make build.
3351 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3353 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3354 The value now differs depending on if you build for FIPS or not.
3355 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3356 safely run with a non-FIPSed libcrypto, as it may crash because of
3357 the difference induced by this change.
3360 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3362 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3363 (part of SSL_OP_ALL). This option used to disable the
3364 countermeasure against man-in-the-middle protocol-version
3365 rollback in the SSL 2.0 server implementation, which is a bad
3366 idea. (CVE-2005-2969)
3368 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3369 for Information Security, National Institute of Advanced Industrial
3370 Science and Technology [AIST], Japan)]
3372 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3373 mainly for FIPS compliance and not fully integrated at this stage.
3376 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3377 the exponentiation using a fixed-length exponent. (Otherwise,
3378 the information leaked through timing could expose the secret key
3379 after many signatures; cf. Bleichenbacher's attack on DSA with
3383 *) Make a new fixed-window mod_exp implementation the default for
3384 RSA, DSA, and DH private-key operations so that the sequence of
3385 squares and multiplies and the memory access pattern are
3386 independent of the particular secret key. This will mitigate
3387 cache-timing and potential related attacks.
3389 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3390 and this is automatically used by BN_mod_exp_mont() if the new flag
3391 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3392 will use this BN flag for private exponents unless the flag
3393 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3394 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3396 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3398 *) Change the client implementation for SSLv23_method() and
3399 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3400 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3401 (Previously, the SSL 2.0 backwards compatible Client Hello
3402 message format would be used even with SSL_OP_NO_SSLv2.)
3405 *) Add support for smime-type MIME parameter in S/MIME messages which some
3409 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3410 a threadsafe manner. Modify rsa code to use new function and add calls
3411 to dsa and dh code (which had race conditions before).
3414 *) Include the fixed error library code in the C error file definitions
3415 instead of fixing them up at runtime. This keeps the error code
3416 structures constant.
3419 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3421 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3424 *) Fixes for newer kerberos headers. NB: the casts are needed because
3425 the 'length' field is signed on one version and unsigned on another
3426 with no (?) obvious way to tell the difference, without these VC++
3427 complains. Also the "definition" of FAR (blank) is no longer included
3428 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3429 some needed definitions.
3432 *) Undo Cygwin change.
3435 *) Added support for proxy certificates according to RFC 3820.
3436 Because they may be a security thread to unaware applications,
3437 they must be explicitely allowed in run-time. See
3438 docs/HOWTO/proxy_certificates.txt for further information.
3441 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3443 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3444 server and client random values. Previously
3445 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3446 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3448 This change has negligible security impact because:
3450 1. Server and client random values still have 24 bytes of pseudo random
3453 2. Server and client random values are sent in the clear in the initial
3456 3. The master secret is derived using the premaster secret (48 bytes in
3457 size for static RSA ciphersuites) as well as client server and random
3460 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3463 [Stephen Henson, reported by UK NISCC]
3465 *) Use Windows randomness collection on Cygwin.
3468 *) Fix hang in EGD/PRNGD query when communication socket is closed
3469 prematurely by EGD/PRNGD.
3470 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3472 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3475 *) Back-port of selected performance improvements from development
3476 branch, as well as improved support for PowerPC platforms.
3479 *) Add lots of checks for memory allocation failure, error codes to indicate
3480 failure and freeing up memory if a failure occurs.
3481 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3483 *) Add new -passin argument to dgst.
3486 *) Perform some character comparisons of different types in X509_NAME_cmp:
3487 this is needed for some certificates that reencode DNs into UTF8Strings
3488 (in violation of RFC3280) and can't or wont issue name rollover
3492 *) Make an explicit check during certificate validation to see that
3493 the CA setting in each certificate on the chain is correct. As a
3494 side effect always do the following basic checks on extensions,
3495 not just when there's an associated purpose to the check:
3497 - if there is an unhandled critical extension (unless the user
3498 has chosen to ignore this fault)
3499 - if the path length has been exceeded (if one is set at all)
3500 - that certain extensions fit the associated purpose (if one has
3504 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3506 *) Avoid a race condition when CRLs are checked in a multi threaded
3507 environment. This would happen due to the reordering of the revoked
3508 entries during signature checking and serial number lookup. Now the
3509 encoding is cached and the serial number sort performed under a lock.
3510 Add new STACK function sk_is_sorted().
3513 *) Add Delta CRL to the extension code.
3516 *) Various fixes to s3_pkt.c so alerts are sent properly.
3517 [David Holmes <d.holmes@f5.com>]
3519 *) Reduce the chances of duplicate issuer name and serial numbers (in
3520 violation of RFC3280) using the OpenSSL certificate creation utilities.
3521 This is done by creating a random 64 bit value for the initial serial
3522 number when a serial number file is created or when a self signed
3523 certificate is created using 'openssl req -x509'. The initial serial
3524 number file is created using 'openssl x509 -next_serial' in CA.pl
3525 rather than being initialized to 1.
3528 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3530 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3531 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3532 [Joe Orton, Steve Henson]
3534 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3536 [Joe Orton, Steve Henson]
3538 *) Make it possible to have multiple active certificates with the same
3539 subject in the CA index file. This is done only if the keyword
3540 'unique_subject' is set to 'no' in the main CA section (default
3541 if 'CA_default') of the configuration file. The value is saved
3542 with the database itself in a separate index attribute file,
3543 named like the index file with '.attr' appended to the name.
3546 *) X509 verify fixes. Disable broken certificate workarounds when
3547 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3548 keyUsage extension present. Don't accept CRLs with unhandled critical
3549 extensions: since verify currently doesn't process CRL extensions this
3550 rejects a CRL with *any* critical extensions. Add new verify error codes
3554 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3555 A clarification of RFC2560 will require the use of OCTET STRINGs and
3556 some implementations cannot handle the current raw format. Since OpenSSL
3557 copies and compares OCSP nonces as opaque blobs without any attempt at
3558 parsing them this should not create any compatibility issues.
3561 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3562 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3563 this HMAC (and other) operations are several times slower than OpenSSL
3567 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3568 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3570 *) Use the correct content when signing type "other".
3573 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3575 *) Fix various bugs revealed by running the NISCC test suite:
3577 Stop out of bounds reads in the ASN1 code when presented with
3578 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3580 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3582 If verify callback ignores invalid public key errors don't try to check
3583 certificate signature with the NULL public key.
3587 *) New -ignore_err option in ocsp application to stop the server
3588 exiting on the first error in a request.
3591 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3592 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3596 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3597 extra data after the compression methods not only for TLS 1.0
3598 but also for SSL 3.0 (as required by the specification).
3599 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3601 *) Change X509_certificate_type() to mark the key as exported/exportable
3602 when it's 512 *bits* long, not 512 bytes.
3605 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3606 blocks during encryption.
3609 *) Various fixes to base64 BIO and non blocking I/O. On write
3610 flushes were not handled properly if the BIO retried. On read
3611 data was not being buffered properly and had various logic bugs.
3612 This also affects blocking I/O when the data being decoded is a
3616 *) Various S/MIME bugfixes and compatibility changes:
3617 output correct application/pkcs7 MIME type if
3618 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3619 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3620 of files as .eml work). Correctly handle very long lines in MIME
3624 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3626 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3627 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3628 a protocol version number mismatch like a decryption error
3629 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3632 *) Turn on RSA blinding by default in the default implementation
3633 to avoid a timing attack. Applications that don't want it can call
3634 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3635 They would be ill-advised to do so in most cases.
3636 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3638 *) Change RSA blinding code so that it works when the PRNG is not
3639 seeded (in this case, the secret RSA exponent is abused as
3640 an unpredictable seed -- if it is not unpredictable, there
3641 is no point in blinding anyway). Make RSA blinding thread-safe
3642 by remembering the creator's thread ID in rsa->blinding and
3643 having all other threads use local one-time blinding factors
3644 (this requires more computation than sharing rsa->blinding, but
3645 avoids excessive locking; and if an RSA object is not shared
3646 between threads, blinding will still be very fast).
3649 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3650 ENGINE as defaults for all supported algorithms irrespective of
3651 the 'flags' parameter. 'flags' is now honoured, so applications
3652 should make sure they are passing it correctly.
3655 *) Target "mingw" now allows native Windows code to be generated in
3656 the Cygwin environment as well as with the MinGW compiler.
3659 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3661 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3662 via timing by performing a MAC computation even if incorrrect
3663 block cipher padding has been found. This is a countermeasure
3664 against active attacks where the attacker has to distinguish
3665 between bad padding and a MAC verification error. (CVE-2003-0078)
3667 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3668 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3669 Martin Vuagnoux (EPFL, Ilion)]
3671 *) Make the no-err option work as intended. The intention with no-err
3672 is not to have the whole error stack handling routines removed from
3673 libcrypto, it's only intended to remove all the function name and
3674 reason texts, thereby removing some of the footprint that may not
3675 be interesting if those errors aren't displayed anyway.
3677 NOTE: it's still possible for any application or module to have it's
3678 own set of error texts inserted. The routines are there, just not
3679 used by default when no-err is given.
3682 *) Add support for FreeBSD on IA64.
3683 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3685 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3686 Kerberos function mit_des_cbc_cksum(). Before this change,
3687 the value returned by DES_cbc_cksum() was like the one from
3688 mit_des_cbc_cksum(), except the bytes were swapped.
3689 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3691 *) Allow an application to disable the automatic SSL chain building.
3692 Before this a rather primitive chain build was always performed in
3693 ssl3_output_cert_chain(): an application had no way to send the
3694 correct chain if the automatic operation produced an incorrect result.
3696 Now the chain builder is disabled if either:
3698 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3700 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3702 The reasoning behind this is that an application would not want the
3703 auto chain building to take place if extra chain certificates are
3704 present and it might also want a means of sending no additional
3705 certificates (for example the chain has two certificates and the
3709 *) Add the possibility to build without the ENGINE framework.
3710 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3712 *) Under Win32 gmtime() can return NULL: check return value in
3713 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3716 *) DSA routines: under certain error conditions uninitialized BN objects
3717 could be freed. Solution: make sure initialization is performed early
3718 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3719 Nils Larsch <nla@trustcenter.de> via PR#459)
3722 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3723 checked on reconnect on the client side, therefore session resumption
3724 could still fail with a "ssl session id is different" error. This
3725 behaviour is masked when SSL_OP_ALL is used due to
3726 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3727 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3728 followup to PR #377.
3731 *) IA-32 assembler support enhancements: unified ELF targets, support
3732 for SCO/Caldera platforms, fix for Cygwin shared build.
3735 *) Add support for FreeBSD on sparc64. As a consequence, support for
3736 FreeBSD on non-x86 processors is separate from x86 processors on
3737 the config script, much like the NetBSD support.
3738 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3740 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3742 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3745 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3746 code (06) was taken as the first octet of the session ID and the last
3747 octet was ignored consequently. As a result SSLv2 client side session
3748 caching could not have worked due to the session ID mismatch between
3750 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3754 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3755 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3759 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3760 seems that in spite of existing for more than a year, many application
3761 author have done nothing to provide the necessary callbacks, which
3762 means that this particular engine will not work properly anywhere.
3763 This is a very unfortunate situation which forces us, in the name
3764 of usability, to give the hw_ncipher.c a static lock, which is part
3766 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3767 appear in 0.9.8 or later. We EXPECT application authors to have
3768 dealt properly with this when 0.9.8 is released (unless we actually
3769 make such changes in the libcrypto locking code that changes will
3770 have to be made anyway).
3773 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3774 octets have been read, EOF or an error occurs. Without this change
3775 some truncated ASN1 structures will not produce an error.
3778 *) Disable Heimdal support, since it hasn't been fully implemented.
3779 Still give the possibility to force the use of Heimdal, but with
3780 warnings and a request that patches get sent to openssl-dev.
3783 *) Add the VC-CE target, introduce the WINCE sysname, and add
3784 INSTALL.WCE and appropriate conditionals to make it build.
3785 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3787 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3788 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3789 edit numbers of the version.
3790 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3792 *) Introduce safe string copy and catenation functions
3793 (BUF_strlcpy() and BUF_strlcat()).
3794 [Ben Laurie (CHATS) and Richard Levitte]
3796 *) Avoid using fixed-size buffers for one-line DNs.
3797 [Ben Laurie (CHATS)]
3799 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3800 resizing buffers containing secrets, and use where appropriate.
3801 [Ben Laurie (CHATS)]
3803 *) Avoid using fixed size buffers for configuration file location.
3804 [Ben Laurie (CHATS)]
3806 *) Avoid filename truncation for various CA files.
3807 [Ben Laurie (CHATS)]
3809 *) Use sizeof in preference to magic numbers.
3810 [Ben Laurie (CHATS)]
3812 *) Avoid filename truncation in cert requests.
3813 [Ben Laurie (CHATS)]
3815 *) Add assertions to check for (supposedly impossible) buffer
3817 [Ben Laurie (CHATS)]
3819 *) Don't cache truncated DNS entries in the local cache (this could
3820 potentially lead to a spoofing attack).
3821 [Ben Laurie (CHATS)]
3823 *) Fix various buffers to be large enough for hex/decimal
3824 representations in a platform independent manner.
3825 [Ben Laurie (CHATS)]
3827 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3828 resizing buffers containing secrets, and use where appropriate.
3829 [Ben Laurie (CHATS)]
3831 *) Add BIO_indent() to avoid much slightly worrying code to do
3833 [Ben Laurie (CHATS)]
3835 *) Convert sprintf()/BIO_puts() to BIO_printf().
3836 [Ben Laurie (CHATS)]
3838 *) buffer_gets() could terminate with the buffer only half
3840 [Ben Laurie (CHATS)]
3842 *) Add assertions to prevent user-supplied crypto functions from
3843 overflowing internal buffers by having large block sizes, etc.
3844 [Ben Laurie (CHATS)]
3846 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3848 [Ben Laurie (CHATS)]
3850 *) Eliminate unused copy of key in RC4.
3851 [Ben Laurie (CHATS)]
3853 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3854 [Ben Laurie (CHATS)]
3856 *) Fix off-by-one error in EGD path.
3857 [Ben Laurie (CHATS)]
3859 *) If RANDFILE path is too long, ignore instead of truncating.
3860 [Ben Laurie (CHATS)]
3862 *) Eliminate unused and incorrectly sized X.509 structure
3864 [Ben Laurie (CHATS)]
3866 *) Eliminate unused and dangerous function knumber().
3867 [Ben Laurie (CHATS)]
3869 *) Eliminate unused and dangerous structure, KSSL_ERR.
3870 [Ben Laurie (CHATS)]
3872 *) Protect against overlong session ID context length in an encoded
3873 session object. Since these are local, this does not appear to be
3875 [Ben Laurie (CHATS)]
3877 *) Change from security patch (see 0.9.6e below) that did not affect
3878 the 0.9.6 release series:
3880 Remote buffer overflow in SSL3 protocol - an attacker could
3881 supply an oversized master key in Kerberos-enabled versions.
3883 [Ben Laurie (CHATS)]
3885 *) Change the SSL kerb5 codes to match RFC 2712.
3888 *) Make -nameopt work fully for req and add -reqopt switch.
3889 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3891 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3892 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3894 *) Make sure tests can be performed even if the corresponding algorithms
3895 have been removed entirely. This was also the last step to make
3896 OpenSSL compilable with DJGPP under all reasonable conditions.
3897 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3899 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3900 to allow version independent disabling of normally unselected ciphers,
3901 which may be activated as a side-effect of selecting a single cipher.
3903 (E.g., cipher list string "RSA" enables ciphersuites that are left
3904 out of "ALL" because they do not provide symmetric encryption.
3905 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3906 [Lutz Jaenicke, Bodo Moeller]
3908 *) Add appropriate support for separate platform-dependent build
3909 directories. The recommended way to make a platform-dependent
3910 build directory is the following (tested on Linux), maybe with
3913 # Place yourself outside of the OpenSSL source tree. In
3914 # this example, the environment variable OPENSSL_SOURCE
3915 # is assumed to contain the absolute OpenSSL source directory.
3916 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3917 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3918 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3919 mkdir -p `dirname $F`
3920 ln -s $OPENSSL_SOURCE/$F $F
3923 To be absolutely sure not to disturb the source tree, a "make clean"
3924 is a good thing. If it isn't successfull, don't worry about it,
3925 it probably means the source directory is very clean.
3928 *) Make sure any ENGINE control commands make local copies of string
3929 pointers passed to them whenever necessary. Otherwise it is possible
3930 the caller may have overwritten (or deallocated) the original string
3931 data when a later ENGINE operation tries to use the stored values.
3932 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3934 *) Improve diagnostics in file reading and command-line digests.
3935 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3937 *) Add AES modes CFB and OFB to the object database. Correct an
3938 error in AES-CFB decryption.
3941 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3942 allows existing EVP_CIPHER_CTX structures to be reused after
3943 calling EVP_*Final(). This behaviour is used by encryption
3944 BIOs and some applications. This has the side effect that
3945 applications must explicitly clean up cipher contexts with
3946 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3949 *) Check the values of dna and dnb in bn_mul_recursive before calling
3950 bn_mul_comba (a non zero value means the a or b arrays do not contain
3951 n2 elements) and fallback to bn_mul_normal if either is not zero.
3954 *) Fix escaping of non-ASCII characters when using the -subj option
3955 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3958 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3959 form for "surname", serialNumber has no short form.
3960 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3961 therefore remove "mail" short name for "internet 7".
3962 The OID for unique identifiers in X509 certificates is
3963 x500UniqueIdentifier, not uniqueIdentifier.
3964 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3967 *) Add an "init" command to the ENGINE config module and auto initialize
3968 ENGINEs. Without any "init" command the ENGINE will be initialized
3969 after all ctrl commands have been executed on it. If init=1 the
3970 ENGINE is initailized at that point (ctrls before that point are run
3971 on the uninitialized ENGINE and after on the initialized one). If
3972 init=0 then the ENGINE will not be iniatialized at all.
3975 *) Fix the 'app_verify_callback' interface so that the user-defined
3976 argument is actually passed to the callback: In the
3977 SSL_CTX_set_cert_verify_callback() prototype, the callback
3978 declaration has been changed from
3981 int (*cb)(X509_STORE_CTX *,void *);
3982 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3983 i=s->ctx->app_verify_callback(&ctx)
3984 has been changed into
3985 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3987 To update applications using SSL_CTX_set_cert_verify_callback(),
3988 a dummy argument can be added to their callback functions.
3989 [D. K. Smetters <smetters@parc.xerox.com>]
3991 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3992 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3994 *) Add and OPENSSL_LOAD_CONF define which will cause
3995 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3996 This allows older applications to transparently support certain
3997 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3998 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3999 load the config file and OPENSSL_add_all_algorithms_conf() which will
4000 always load it have also been added.
4003 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4004 Adjust NIDs and EVP layer.
4005 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4007 *) Config modules support in openssl utility.
4009 Most commands now load modules from the config file,
4010 though in a few (such as version) this isn't done
4011 because it couldn't be used for anything.
4013 In the case of ca and req the config file used is
4014 the same as the utility itself: that is the -config
4015 command line option can be used to specify an
4019 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4020 use "openssl_conf" if filename is NULL use default openssl config file.
4023 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4024 config section name. Add a new flag to tolerate a missing config file
4025 and move code to CONF_modules_load_file().
4028 *) Support for crypto accelerator cards from Accelerated Encryption
4029 Processing, www.aep.ie. (Use engine 'aep')
4030 The support was copied from 0.9.6c [engine] and adapted/corrected
4031 to work with the new engine framework.
4032 [AEP Inc. and Richard Levitte]
4034 *) Support for SureWare crypto accelerator cards from Baltimore
4035 Technologies. (Use engine 'sureware')
4036 The support was copied from 0.9.6c [engine] and adapted
4037 to work with the new engine framework.
4040 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4041 make the newer ENGINE framework commands for the CHIL engine work.
4042 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4044 *) Make it possible to produce shared libraries on ReliantUNIX.
4045 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4047 *) Add the configuration target debug-linux-ppro.
4048 Make 'openssl rsa' use the general key loading routines
4049 implemented in apps.c, and make those routines able to
4050 handle the key format FORMAT_NETSCAPE and the variant
4052 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4054 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4055 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4057 *) Add -keyform to rsautl, and document -engine.
4058 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4060 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4061 BIO_R_NO_SUCH_FILE error code rather than the generic
4062 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4065 *) Add new functions
4067 ERR_peek_last_error_line
4068 ERR_peek_last_error_line_data.
4069 These are similar to
4072 ERR_peek_error_line_data,
4073 but report on the latest error recorded rather than the first one
4074 still in the error queue.
4075 [Ben Laurie, Bodo Moeller]
4077 *) default_algorithms option in ENGINE config module. This allows things
4079 default_algorithms = ALL
4080 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4083 *) Prelminary ENGINE config module.
4086 *) New experimental application configuration code.
4089 *) Change the AES code to follow the same name structure as all other
4090 symmetric ciphers, and behave the same way. Move everything to
4091 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4092 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4094 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4095 [Ben Laurie and Theo de Raadt]
4097 *) Add option to output public keys in req command.
4098 [Massimiliano Pala madwolf@openca.org]
4100 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4101 (up to about 10% better than before for P-192 and P-224).
4104 *) New functions/macros
4106 SSL_CTX_set_msg_callback(ctx, cb)
4107 SSL_CTX_set_msg_callback_arg(ctx, arg)
4108 SSL_set_msg_callback(ssl, cb)
4109 SSL_set_msg_callback_arg(ssl, arg)
4111 to request calling a callback function
4113 void cb(int write_p, int version, int content_type,
4114 const void *buf, size_t len, SSL *ssl, void *arg)
4116 whenever a protocol message has been completely received
4117 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4118 protocol version according to which the SSL library interprets
4119 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4120 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4121 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4122 specification (change_cipher_spec(20), alert(21), handshake(22)).
4123 'buf' and 'len' point to the actual message, 'ssl' to the
4124 SSL object, and 'arg' is the application-defined value set by
4125 SSL[_CTX]_set_msg_callback_arg().
4127 'openssl s_client' and 'openssl s_server' have new '-msg' options
4128 to enable a callback that displays all protocol messages.
4131 *) Change the shared library support so shared libraries are built as
4132 soon as the corresponding static library is finished, and thereby get
4133 openssl and the test programs linked against the shared library.
4134 This still only happens when the keyword "shard" has been given to
4135 the configuration scripts.
4137 NOTE: shared library support is still an experimental thing, and
4138 backward binary compatibility is still not guaranteed.
4139 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4141 *) Add support for Subject Information Access extension.
4142 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4144 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4145 additional bytes when new memory had to be allocated, not just
4146 when reusing an existing buffer.
4149 *) New command line and configuration option 'utf8' for the req command.
4150 This allows field values to be specified as UTF8 strings.
4153 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4154 runs for the former and machine-readable output for the latter.
4157 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4158 of the e-mail address in the DN (i.e., it will go into a certificate
4159 extension only). The new configuration file option 'email_in_dn = no'
4160 has the same effect.
4161 [Massimiliano Pala madwolf@openca.org]
4163 *) Change all functions with names starting with des_ to be starting
4164 with DES_ instead. Add wrappers that are compatible with libdes,
4165 but are named _ossl_old_des_*. Finally, add macros that map the
4166 des_* symbols to the corresponding _ossl_old_des_* if libdes
4167 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4168 desired, the des_* symbols will be mapped to DES_*, with one
4171 Since we provide two compatibility mappings, the user needs to
4172 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4173 compatibility is desired. The default (i.e., when that macro
4174 isn't defined) is OpenSSL 0.9.6c compatibility.
4176 There are also macros that enable and disable the support of old
4177 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4178 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4179 are defined, the default will apply: to support the old des routines.
4181 In either case, one must include openssl/des.h to get the correct
4182 definitions. Do not try to just include openssl/des_old.h, that
4185 NOTE: This is a major break of an old API into a new one. Software
4186 authors are encouraged to switch to the DES_ style functions. Some
4187 time in the future, des_old.h and the libdes compatibility functions
4188 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4189 default), and then completely removed.
4192 *) Test for certificates which contain unsupported critical extensions.
4193 If such a certificate is found during a verify operation it is
4194 rejected by default: this behaviour can be overridden by either
4195 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4196 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4197 X509_supported_extension() has also been added which returns 1 if a
4198 particular extension is supported.
4201 *) Modify the behaviour of EVP cipher functions in similar way to digests
4202 to retain compatibility with existing code.
4205 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4206 compatibility with existing code. In particular the 'ctx' parameter does
4207 not have to be to be initialized before the call to EVP_DigestInit() and
4208 it is tidied up after a call to EVP_DigestFinal(). New function
4209 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4210 EVP_MD_CTX_copy() changed to not require the destination to be
4211 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4212 requires the destination to be valid.
4214 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4215 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4218 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4219 so that complete 'Handshake' protocol structures are kept in memory
4220 instead of overwriting 'msg_type' and 'length' with 'body' data.
4223 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4224 [Massimo Santin via Richard Levitte]
4226 *) Major restructuring to the underlying ENGINE code. This includes
4227 reduction of linker bloat, separation of pure "ENGINE" manipulation
4228 (initialisation, etc) from functionality dealing with implementations
4229 of specific crypto iterfaces. This change also introduces integrated
4230 support for symmetric ciphers and digest implementations - so ENGINEs
4231 can now accelerate these by providing EVP_CIPHER and EVP_MD
4232 implementations of their own. This is detailed in crypto/engine/README
4233 as it couldn't be adequately described here. However, there are a few
4234 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4235 were changed in the original introduction of ENGINE code have now
4236 reverted back - the hooking from this code to ENGINE is now a good
4237 deal more passive and at run-time, operations deal directly with
4238 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4239 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4240 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4241 they were not being used by the framework as there is no concept of a
4242 BIGNUM_METHOD and they could not be generalised to the new
4243 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4244 ENGINE_cpy() has been removed as it cannot be consistently defined in
4248 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4251 *) Change mkdef.pl to sort symbols that get the same entry number,
4252 and make sure the automatically generated functions ERR_load_*
4253 become part of libeay.num as well.
4256 *) New function SSL_renegotiate_pending(). This returns true once
4257 renegotiation has been requested (either SSL_renegotiate() call
4258 or HelloRequest/ClientHello receveived from the peer) and becomes
4259 false once a handshake has been completed.
4260 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4261 sends a HelloRequest, but does not ensure that a handshake takes
4262 place. SSL_renegotiate_pending() is useful for checking if the
4263 client has followed the request.)
4266 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4267 By default, clients may request session resumption even during
4268 renegotiation (if session ID contexts permit); with this option,
4269 session resumption is possible only in the first handshake.
4271 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4272 more bits available for options that should not be part of
4273 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4276 *) Add some demos for certificate and certificate request creation.
4279 *) Make maximum certificate chain size accepted from the peer application
4280 settable (SSL*_get/set_max_cert_list()), as proposed by
4281 "Douglas E. Engert" <deengert@anl.gov>.
4284 *) Add support for shared libraries for Unixware-7
4285 (Boyd Lynn Gerber <gerberb@zenez.com>).
4288 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4289 be done prior to destruction. Use this to unload error strings from
4290 ENGINEs that load their own error strings. NB: This adds two new API
4291 functions to "get" and "set" this destroy handler in an ENGINE.
4294 *) Alter all existing ENGINE implementations (except "openssl" and
4295 "openbsd") to dynamically instantiate their own error strings. This
4296 makes them more flexible to be built both as statically-linked ENGINEs
4297 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4298 Also, add stub code to each that makes building them as self-contained
4299 shared-libraries easier (see README.ENGINE).
4302 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4303 implementations into applications that are completely implemented in
4304 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4305 commands that can be used to configure what shared-library to load and
4306 to control aspects of the way it is handled. Also, made an update to
4307 the README.ENGINE file that brings its information up-to-date and
4308 provides some information and instructions on the "dynamic" ENGINE
4309 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4312 *) Make it possible to unload ranges of ERR strings with a new
4313 "ERR_unload_strings" function.
4316 *) Add a copy() function to EVP_MD.
4319 *) Make EVP_MD routines take a context pointer instead of just the
4320 md_data void pointer.
4323 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4324 that the digest can only process a single chunk of data
4325 (typically because it is provided by a piece of
4326 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4327 is only going to provide a single chunk of data, and hence the
4328 framework needn't accumulate the data for oneshot drivers.
4331 *) As with "ERR", make it possible to replace the underlying "ex_data"
4332 functions. This change also alters the storage and management of global
4333 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4334 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4335 index counters. The API functions that use this state have been changed
4336 to take a "class_index" rather than pointers to the class's local STACK
4337 and counter, and there is now an API function to dynamically create new
4338 classes. This centralisation allows us to (a) plug a lot of the
4339 thread-safety problems that existed, and (b) makes it possible to clean
4340 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4341 such data would previously have always leaked in application code and
4342 workarounds were in place to make the memory debugging turn a blind eye
4343 to it. Application code that doesn't use this new function will still
4344 leak as before, but their memory debugging output will announce it now
4345 rather than letting it slide.
4347 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4348 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4349 has a return value to indicate success or failure.
4352 *) Make it possible to replace the underlying "ERR" functions such that the
4353 global state (2 LHASH tables and 2 locks) is only used by the "default"
4354 implementation. This change also adds two functions to "get" and "set"
4355 the implementation prior to it being automatically set the first time
4356 any other ERR function takes place. Ie. an application can call "get",
4357 pass the return value to a module it has just loaded, and that module
4358 can call its own "set" function using that value. This means the
4359 module's "ERR" operations will use (and modify) the error state in the
4360 application and not in its own statically linked copy of OpenSSL code.
4363 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4364 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4365 the operation, and provides a more encapsulated way for external code
4366 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4367 to use these functions rather than manually incrementing the counts.
4369 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4372 *) Add EVP test program.
4375 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4378 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4379 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4380 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4381 These allow a CRL to be built without having to access X509_CRL fields
4382 directly. Modify 'ca' application to use new functions.
4385 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4386 bug workarounds. Rollback attack detection is a security feature.
4387 The problem will only arise on OpenSSL servers when TLSv1 is not
4388 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4389 Software authors not wanting to support TLSv1 will have special reasons
4390 for their choice and can explicitly enable this option.
4391 [Bodo Moeller, Lutz Jaenicke]
4393 *) Rationalise EVP so it can be extended: don't include a union of
4394 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4395 (similar to those existing for EVP_CIPHER_CTX).
4400 EVP_MD_CTX_init(&md); /* new function call */
4401 EVP_DigestInit(&md, EVP_sha1());
4402 EVP_DigestUpdate(&md, in, len);
4403 EVP_DigestFinal(&md, out, NULL);
4404 EVP_MD_CTX_cleanup(&md); /* new function call */
4408 *) Make DES key schedule conform to the usual scheme, as well as
4409 correcting its structure. This means that calls to DES functions
projects / openssl.git / blob