5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Enhance SSL/TLS certificate chain handling to support different
8 chains for each certificate instead of one chain in the parent SSL_CTX.
11 *) Support for fixed DH ciphersuite client authentication: where both
12 server and client use DH certificates with common parameters.
15 *) Support for fixed DH ciphersuites: those requiring DH server
19 *) Transparently support X9.42 DH parameters when calling
20 PEM_read_bio_DHparameters. This means existing applications can handle
21 the new parameter format automatically.
24 *) Initial experimental support for X9.42 DH parameter format: mainly
25 to support use of 'q' parameter for RFC5114 parameters.
28 *) Add DH parameters from RFC5114 including test data to dhtest.
31 *) Update fips_test_suite to support multiple command line options. New
32 test to induce all self test errors in sequence and check expected
36 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
37 sign or verify all in one operation.
40 *) Add fips_algvs: a multicall fips utility incorporaing all the algorithm
41 test programs and fips_test_suite. Includes functionality to parse
42 the minimal script output of fipsalgest.pl directly.
45 *) Add authorisation parameter to FIPS_module_mode_set().
48 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
51 *) Use separate DRBG fields for internal and external flags. New function
52 FIPS_drbg_health_check() to perform on demand health checking. Add
53 generation tests to fips_test_suite with reduced health check interval to
54 demonstrate periodic health checking. Add "nodh" option to
55 fips_test_suite to skip very slow DH test.
58 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
62 *) More extensive health check for DRBG checking many more failure modes.
63 New function FIPS_selftest_drbg_all() to handle every possible DRBG
64 combination: call this in fips_test_suite.
67 *) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
68 and POST to handle Dual EC cases.
71 *) Add support for canonical generation of DSA parameter 'g'. See
74 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
75 POST to handle HMAC cases.
78 *) Add functions FIPS_module_version() and FIPS_module_version_text()
79 to return numberical and string versions of the FIPS module number.
82 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
83 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implmeneted
84 outside the validated module in the FIPS capable OpenSSL.
87 *) Minor change to DRBG entropy callback semantics. In some cases
88 there is no mutiple of the block length between min_len and
89 max_len. Allow the callback to return more than max_len bytes
90 of entropy but discard any extra: it is the callback's responsibility
91 to ensure that the extra data discarded does not impact the
92 requested amount of entropy.
95 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
96 information in FIPS186-3, SP800-57 and SP800-131A.
99 *) CCM support via EVP. Interface is very similar to GCM case except we
100 must supply all data in one chunk (i.e. no update, final) and the
101 message length must be supplied if AAD is used. Add algorithm test
105 *) Initial version of POST overhaul. Add POST callback to allow the status
106 of POST to be monitored and/or failures induced. Modify fips_test_suite
107 to use callback. Always run all selftests even if one fails.
110 *) XTS support including algorithm test driver in the fips_gcmtest program.
111 Note: this does increase the maximum key length from 32 to 64 bytes but
112 there should be no binary compatibility issues as existing applications
113 will never use XTS mode.
116 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
117 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
118 performs algorithm blocking for unapproved PRNG types. Also do not
119 set PRNG type in FIPS_mode_set(): leave this to the application.
120 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
121 the standard OpenSSL PRNG: set additional data to a date time vector.
124 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
125 This shouldn't present any incompatibility problems because applications
126 shouldn't be using these directly and any that are will need to rethink
127 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
130 *) Extensive self tests and health checking required by SP800-90 DRBG.
131 Remove strength parameter from FIPS_drbg_instantiate and always
132 instantiate at maximum supported strength.
135 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
138 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
141 *) New function DH_compute_key_padded() to compute a DH key and pad with
142 leading zeroes if needed: this complies with SP800-56A et al.
145 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
146 anything, incomplete, subject to change and largely untested at present.
149 *) Modify fipscanisteronly build option to only build the necessary object
150 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
153 *) Add experimental option FIPSSYMS to give all symbols in
154 fipscanister.o and FIPS or fips prefix. This will avoid
155 conflicts with future versions of OpenSSL. Add perl script
156 util/fipsas.pl to preprocess assembly language source files
157 and rename any affected symbols.
160 *) Add selftest checks and algorithm block of non-fips algorithms in
161 FIPS mode. Remove DES2 from selftests.
164 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
165 return internal method without any ENGINE dependencies. Add new
166 tiny fips sign and verify functions.
169 *) New build option no-ec2m to disable characteristic 2 code.
172 *) New build option "fipscanisteronly". This only builds fipscanister.o
173 and (currently) associated fips utilities. Uses the file Makefile.fips
174 instead of Makefile.org as the prototype.
177 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
178 Update fips_gcmtest to use IV generator.
181 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
182 setting output buffer to NULL. The *Final function must be
183 called although it will not retrieve any additional data. The tag
184 can be set or retrieved with a ctrl. The IV length is by default 12
185 bytes (96 bits) but can be set to an alternative value. If the IV
186 length exceeds the maximum IV length (currently 16 bytes) it cannot be
190 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
191 underlying do_cipher function handles all cipher semantics itself
192 including padding and finalisation. This is useful if (for example)
193 an ENGINE cipher handles block padding itself. The behaviour of
194 do_cipher is subtly changed if this flag is set: the return value
195 is the number of characters written to the output buffer (zero is
196 no longer an error code) or a negative error code. Also if the
197 input buffer is NULL and length 0 finalisation should be performed.
200 *) If a candidate issuer certificate is already part of the constructed
201 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
204 *) Improve forward-security support: add functions
206 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
207 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
209 for use by SSL/TLS servers; the callback function will be called whenever a
210 new session is created, and gets to decide whether the session may be
211 cached to make it resumable (return 0) or not (return 1). (As by the
212 SSL/TLS protocol specifications, the session_id sent by the server will be
213 empty to indicate that the session is not resumable; also, the server will
214 not generate RFC 4507 (RFC 5077) session tickets.)
216 A simple reasonable callback implementation is to return is_forward_secure.
217 This parameter will be set to 1 or 0 depending on the ciphersuite selected
218 by the SSL/TLS server library, indicating whether it can provide forward
220 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
222 *) New function OPENSSL_gmtime_diff to find the difference in days
223 and seconds between two tm structures. This will be used to provide
224 additional functionality for ASN1_TIME.
227 *) Add -trusted_first option which attempts to find certificates in the
228 trusted store even if an untrusted chain is also supplied.
231 *) Initial experimental support for explicitly trusted non-root CAs.
232 OpenSSL still tries to build a complete chain to a root but if an
233 intermediate CA has a trust setting included that is used. The first
234 setting is used: whether to trust or reject.
237 *) New -verify_name option in command line utilities to set verification
241 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
242 Add CMAC pkey methods.
245 *) Experimental regnegotiation in s_server -www mode. If the client
246 browses /reneg connection is renegotiated. If /renegcert it is
247 renegotiated requesting a certificate.
250 *) Add an "external" session cache for debugging purposes to s_server. This
251 should help trace issues which normally are only apparent in deployed
252 multi-process servers.
255 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
256 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
257 BIO_set_cipher() and some obscure PEM functions were changed so they
258 can now return an error. The RAND changes required a change to the
259 RAND_METHOD structure.
262 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
263 a gcc attribute to warn if the result of a function is ignored. This
264 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
265 whose return value is often ignored.
268 Changes between 1.0.0f and 1.0.1 [xx XXX xxxx]
270 *) The format used for MDC2 RSA signatures is inconsistent between EVP
271 and the RSA_sign/RSA_verify functions. This was made more apparent when
272 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
273 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
274 the correct format in RSA_verify so both forms transparently work.
277 *) Some servers which support TLS 1.0 can choke if we initially indicate
278 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
279 encrypted premaster secret. As a workaround use the maximum pemitted
280 client version in client hello, this should keep such servers happy
281 and still work with previous versions of OpenSSL.
284 *) Add support for TLS/DTLS heartbeats.
285 [Robin Seggelmann <seggelmann@fh-muenster.de>]
287 *) Add support for SCTP.
288 [Robin Seggelmann <seggelmann@fh-muenster.de>]
290 *) Improved PRNG seeding for VOS.
291 [Paul Green <Paul.Green@stratus.com>]
293 *) Extensive assembler packs updates, most notably:
295 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
296 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
297 - x86_64: bit-sliced AES implementation;
298 - ARM: NEON support, contemporary platforms optimizations;
299 - s390x: z196 support;
300 - *: GHASH and GF(2^m) multiplication implementations;
304 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
305 (removal of unnecessary code)
306 [Peter Sylvester <peter.sylvester@edelweb.fr>]
308 *) Add TLS key material exporter from RFC 5705.
311 *) Add DTLS-SRTP negotiation from RFC 5764.
314 *) Add Next Protocol Negotiation,
315 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
316 disabled with a no-npn flag to config or Configure. Code donated
318 [Adam Langley <agl@google.com> and Ben Laurie]
320 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
321 NIST-P256, NIST-P521, with constant-time single point multiplication on
322 typical inputs. Compiler support for the nonstandard type __uint128_t is
323 required to use this (present in gcc 4.4 and later, for 64-bit builds).
324 Code made available under Apache License version 2.0.
326 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
327 line to include this in your build of OpenSSL, and run "make depend" (or
328 "make update"). This enables the following EC_METHODs:
330 EC_GFp_nistp224_method()
331 EC_GFp_nistp256_method()
332 EC_GFp_nistp521_method()
334 EC_GROUP_new_by_curve_name() will automatically use these (while
335 EC_GROUP_new_curve_GFp() currently prefers the more flexible
337 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
339 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
340 all platforms. Move ssize_t definition from e_os.h to the public
341 header file e_os2.h as it now appears in public header file cms.h
344 *) New -sigopt option to the ca, req and x509 utilities. Additional
345 signature parameters can be passed using this option and in
349 *) Add RSA PSS signing function. This will generate and set the
350 appropriate AlgorithmIdentifiers for PSS based on those in the
351 corresponding EVP_MD_CTX structure. No application support yet.
354 *) Support for companion algorithm specific ASN1 signing routines.
355 New function ASN1_item_sign_ctx() signs a pre-initialised
356 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
357 the appropriate parameters.
360 *) Add new algorithm specific ASN1 verification initialisation function
361 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
362 handling will be the same no matter what EVP_PKEY_METHOD is used.
363 Add a PSS handler to support verification of PSS signatures: checked
364 against a number of sample certificates.
367 *) Add signature printing for PSS. Add PSS OIDs.
368 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
370 *) Add algorithm specific signature printing. An individual ASN1 method
371 can now print out signatures instead of the standard hex dump.
373 More complex signatures (e.g. PSS) can print out more meaningful
374 information. Include DSA version that prints out the signature
378 *) Password based recipient info support for CMS library: implementing
382 *) Split password based encryption into PBES2 and PBKDF2 functions. This
383 neatly separates the code into cipher and PBE sections and is required
384 for some algorithms that split PBES2 into separate pieces (such as
388 *) Session-handling fixes:
389 - Fix handling of connections that are resuming with a session ID,
390 but also support Session Tickets.
391 - Fix a bug that suppressed issuing of a new ticket if the client
392 presented a ticket with an expired session.
393 - Try to set the ticket lifetime hint to something reasonable.
394 - Make tickets shorter by excluding irrelevant information.
395 - On the client side, don't ignore renewed tickets.
396 [Adam Langley, Bodo Moeller (Google)]
398 *) Fix PSK session representation.
401 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
403 This work was sponsored by Intel.
406 *) Add GCM support to TLS library. Some custom code is needed to split
407 the IV between the fixed (from PRF) and explicit (from TLS record)
408 portions. This adds all GCM ciphersuites supported by RFC5288 and
409 RFC5289. Generalise some AES* cipherstrings to inlclude GCM and
410 add a special AESGCM string for GCM only.
413 *) Expand range of ctrls for AES GCM. Permit setting invocation
414 field on decrypt and retrieval of invocation field only on encrypt.
417 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
418 As required by RFC5289 these ciphersuites cannot be used if for
419 versions of TLS earlier than 1.2.
422 *) For FIPS capable OpenSSL interpret a NULL default public key method
423 as unset and return the appopriate default but do *not* set the default.
424 This means we can return the appopriate method in applications that
425 swicth between FIPS and non-FIPS modes.
428 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
429 ENGINE is used then we cannot handle that in the FIPS module so we
430 keep original code iff non-FIPS operations are allowed.
433 *) Add -attime option to openssl utilities.
434 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
436 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
439 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
440 FIPS EC methods unconditionally for now.
443 *) New build option no-ec2m to disable characteristic 2 code.
446 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
447 all cases can be covered as some introduce binary incompatibilities.
450 *) Redirect RSA operations to FIPS module including keygen,
451 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
454 *) Add similar low level API blocking to ciphers.
457 *) Low level digest APIs are not approved in FIPS mode: any attempt
458 to use these will cause a fatal error. Applications that *really* want
459 to use them can use the private_* version instead.
462 *) Redirect cipher operations to FIPS module for FIPS builds.
465 *) Redirect digest operations to FIPS module for FIPS builds.
468 *) Update build system to add "fips" flag which will link in fipscanister.o
469 for static and shared library builds embedding a signature if needed.
472 *) Output TLS supported curves in preference order instead of numerical
473 order. This is currently hardcoded for the highest order curves first.
474 This should be configurable so applications can judge speed vs strength.
477 *) Add TLS v1.2 server support for client authentication.
480 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
484 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
485 FIPS modules versions.
488 *) Add TLS v1.2 client side support for client authentication. Keep cache
489 of handshake records longer as we don't know the hash algorithm to use
490 until after the certificate request message is received.
493 *) Initial TLS v1.2 client support. Add a default signature algorithms
494 extension including all the algorithms we support. Parse new signature
495 format in client key exchange. Relax some ECC signing restrictions for
496 TLS v1.2 as indicated in RFC5246.
499 *) Add server support for TLS v1.2 signature algorithms extension. Switch
500 to new signature format when needed using client digest preference.
501 All server ciphersuites should now work correctly in TLS v1.2. No client
502 support yet and no support for client certificates.
505 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
506 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
507 ciphersuites. At present only RSA key exchange ciphersuites work with
508 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
509 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
510 and version checking.
513 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
514 with this defined it will not be affected by any changes to ssl internal
515 structures. Add several utility functions to allow openssl application
516 to work with OPENSSL_NO_SSL_INTERN defined.
520 [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
522 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
525 *) Permit abbreviated handshakes when renegotiating using the function
526 SSL_renegotiate_abbreviated().
527 [Robin Seggelmann <seggelmann@fh-muenster.de>]
529 *) Add call to ENGINE_register_all_complete() to
530 ENGINE_load_builtin_engines(), so some implementations get used
531 automatically instead of needing explicit application support.
534 *) Add support for TLS key exporter as described in RFC5705.
535 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
537 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
538 a few changes are required:
540 Add SSL_OP_NO_TLSv1_1 flag.
542 Update version checking logic to handle version 1.1.
543 Add explicit IV handling (ported from DTLS code).
544 Add command line options to s_client/s_server.
547 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
549 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
550 Thanks to Antonio Martin, Enterprise Secure Access Research and
551 Development, Cisco Systems, Inc. for discovering this bug and
552 preparing a fix. (CVE-2012-0050)
555 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
557 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
558 of the Vaudenay padding oracle attack on CBC mode encryption
559 which enables an efficient plaintext recovery attack against
560 the OpenSSL implementation of DTLS. Their attack exploits timing
561 differences arising during decryption processing. A research
562 paper describing this attack can be found at:
563 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
564 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
565 Security Group at Royal Holloway, University of London
566 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
567 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
568 for preparing the fix. (CVE-2011-4108)
569 [Robin Seggelmann, Michael Tuexen]
571 *) Clear bytes used for block padding of SSL 3.0 records.
573 [Adam Langley (Google)]
575 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
576 Kadianakis <desnacked@gmail.com> for discovering this issue and
577 Adam Langley for preparing the fix. (CVE-2011-4619)
578 [Adam Langley (Google)]
580 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
581 [Andrey Kulikov <amdeich@gmail.com>]
583 *) Prevent malformed RFC3779 data triggering an assertion failure.
584 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
585 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
586 [Rob Austein <sra@hactrn.net>]
588 *) Improved PRNG seeding for VOS.
589 [Paul Green <Paul.Green@stratus.com>]
591 *) Fix ssl_ciph.c set-up race.
592 [Adam Langley (Google)]
594 *) Fix spurious failures in ecdsatest.c.
595 [Emilia Käsper (Google)]
597 *) Fix the BIO_f_buffer() implementation (which was mixing different
598 interpretations of the '..._len' fields).
599 [Adam Langley (Google)]
601 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
602 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
603 threads won't reuse the same blinding coefficients.
605 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
606 lock to call BN_BLINDING_invert_ex, and avoids one use of
607 BN_BLINDING_update for each BN_BLINDING structure (previously,
608 the last update always remained unused).
609 [Emilia Käsper (Google)]
611 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
612 [Bob Buckholz (Google)]
614 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
616 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
617 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
618 [Kaspar Brand <ossl@velox.ch>]
620 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
621 for multi-threaded use of ECDH. (CVE-2011-3210)
622 [Adam Langley (Google)]
624 *) Fix x509_name_ex_d2i memory leak on bad inputs.
627 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
628 signature public key algorithm by using OID xref utilities instead.
629 Before this you could only use some ECC ciphersuites with SHA1 only.
632 *) Add protection against ECDSA timing attacks as mentioned in the paper
633 by Billy Bob Brumley and Nicola Tuveri, see:
635 http://eprint.iacr.org/2011/232.pdf
637 [Billy Bob Brumley and Nicola Tuveri]
639 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
641 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
642 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
644 *) Fix bug in string printing code: if *any* escaping is enabled we must
645 escape the escape character (backslash) or the resulting string is
649 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
651 *) Disable code workaround for ancient and obsolete Netscape browsers
652 and servers: an attacker can use it in a ciphersuite downgrade attack.
653 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
656 *) Fixed J-PAKE implementation error, originally discovered by
657 Sebastien Martini, further info and confirmation from Stefan
658 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
661 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
663 *) Fix extension code to avoid race conditions which can result in a buffer
664 overrun vulnerability: resumed sessions must not be modified as they can
665 be shared by multiple threads. CVE-2010-3864
668 *) Fix WIN32 build system to correctly link an ENGINE directory into
672 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
674 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
676 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
678 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
680 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
681 context. The operation can be customised via the ctrl mechanism in
682 case ENGINEs want to include additional functionality.
685 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
688 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
689 output hashes compatible with older versions of OpenSSL.
690 [Willy Weisz <weisz@vcpc.univie.ac.at>]
692 *) Fix compression algorithm handling: if resuming a session use the
693 compression algorithm of the resumed session instead of determining
694 it from client hello again. Don't allow server to change algorithm.
697 *) Add load_crls() function to apps tidying load_certs() too. Add option
698 to verify utility to allow additional CRLs to be included.
701 *) Update OCSP request code to permit adding custom headers to the request:
702 some responders need this.
705 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
707 [Julia Lawall <julia@diku.dk>]
709 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
710 needlessly dereferenced structures, used obsolete functions and
711 didn't handle all updated verify codes correctly.
714 *) Disable MD2 in the default configuration.
717 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
718 indicate the initial BIO being pushed or popped. This makes it possible
719 to determine whether the BIO is the one explicitly called or as a result
720 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
721 it handles reference counts correctly and doesn't zero out the I/O bio
722 when it is not being explicitly popped. WARNING: applications which
723 included workarounds for the old buggy behaviour will need to be modified
724 or they could free up already freed BIOs.
727 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
728 renaming to all platforms (within the 0.9.8 branch, this was
729 done conditionally on Netware platforms to avoid a name clash).
730 [Guenter <lists@gknw.net>]
732 *) Add ECDHE and PSK support to DTLS.
733 [Michael Tuexen <tuexen@fh-muenster.de>]
735 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
739 *) Add "missing" function EVP_MD_flags() (without this the only way to
740 retrieve a digest flags is by accessing the structure directly. Update
741 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
742 or cipher is registered as in the "from" argument. Print out all
743 registered digests in the dgst usage message instead of manually
744 attempting to work them out.
747 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
748 this allows the use of compression and extensions. Change default cipher
749 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
750 by default unless an application cipher string requests it.
753 *) Alter match criteria in PKCS12_parse(). It used to try to use local
754 key ids to find matching certificates and keys but some PKCS#12 files
755 don't follow the (somewhat unwritten) rules and this strategy fails.
756 Now just gather all certificates together and the first private key
757 then look for the first certificate that matches the key.
760 *) Support use of registered digest and cipher names for dgst and cipher
761 commands instead of having to add each one as a special case. So now
768 openssl dgst -sha256 foo
770 and this works for ENGINE based algorithms too.
774 *) Update Gost ENGINE to support parameter files.
775 [Victor B. Wagner <vitus@cryptocom.ru>]
777 *) Support GeneralizedTime in ca utility.
778 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
780 *) Enhance the hash format used for certificate directory links. The new
781 form uses the canonical encoding (meaning equivalent names will work
782 even if they aren't identical) and uses SHA1 instead of MD5. This form
783 is incompatible with the older format and as a result c_rehash should
784 be used to rebuild symbolic links.
787 *) Make PKCS#8 the default write format for private keys, replacing the
788 traditional format. This form is standardised, more secure and doesn't
789 include an implicit MD5 dependency.
792 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
793 committed to OpenSSL should pass this lot as a minimum.
796 *) Add session ticket override functionality for use by EAP-FAST.
797 [Jouni Malinen <j@w1.fi>]
799 *) Modify HMAC functions to return a value. Since these can be implemented
800 in an ENGINE errors can occur.
803 *) Type-checked OBJ_bsearch_ex.
806 *) Type-checked OBJ_bsearch. Also some constification necessitated
807 by type-checking. Still to come: TXT_DB, bsearch(?),
808 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
812 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
813 seconds to a tm structure directly, instead of going through OS
814 specific date routines. This avoids any issues with OS routines such
815 as the year 2038 bug. New *_adj() functions for ASN1 time structures
816 and X509_time_adj_ex() to cover the extended range. The existing
817 X509_time_adj() is still usable and will no longer have any date issues.
820 *) Delta CRL support. New use deltas option which will attempt to locate
821 and search any appropriate delta CRLs available.
823 This work was sponsored by Google.
826 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
827 code and add additional score elements. Validate alternate CRL paths
828 as part of the CRL checking and indicate a new error "CRL path validation
829 error" in this case. Applications wanting additional details can use
830 the verify callback and check the new "parent" field. If this is not
831 NULL CRL path validation is taking place. Existing applications wont
832 see this because it requires extended CRL support which is off by
835 This work was sponsored by Google.
838 *) Support for freshest CRL extension.
840 This work was sponsored by Google.
843 *) Initial indirect CRL support. Currently only supported in the CRLs
844 passed directly and not via lookup. Process certificate issuer
845 CRL entry extension and lookup CRL entries by bother issuer name
846 and serial number. Check and process CRL issuer entry in IDP extension.
848 This work was sponsored by Google.
851 *) Add support for distinct certificate and CRL paths. The CRL issuer
852 certificate is validated separately in this case. Only enabled if
853 an extended CRL support flag is set: this flag will enable additional
854 CRL functionality in future.
856 This work was sponsored by Google.
859 *) Add support for policy mappings extension.
861 This work was sponsored by Google.
864 *) Fixes to pathlength constraint, self issued certificate handling,
865 policy processing to align with RFC3280 and PKITS tests.
867 This work was sponsored by Google.
870 *) Support for name constraints certificate extension. DN, email, DNS
871 and URI types are currently supported.
873 This work was sponsored by Google.
876 *) To cater for systems that provide a pointer-based thread ID rather
877 than numeric, deprecate the current numeric thread ID mechanism and
878 replace it with a structure and associated callback type. This
879 mechanism allows a numeric "hash" to be extracted from a thread ID in
880 either case, and on platforms where pointers are larger than 'long',
881 mixing is done to help ensure the numeric 'hash' is usable even if it
882 can't be guaranteed unique. The default mechanism is to use "&errno"
883 as a pointer-based thread ID to distinguish between threads.
885 Applications that want to provide their own thread IDs should now use
886 CRYPTO_THREADID_set_callback() to register a callback that will call
887 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
889 Note that ERR_remove_state() is now deprecated, because it is tied
890 to the assumption that thread IDs are numeric. ERR_remove_state(0)
891 to free the current thread's error state should be replaced by
892 ERR_remove_thread_state(NULL).
894 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
895 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
896 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
897 application was previously providing a numeric thread callback that
898 was inappropriate for distinguishing threads, then uniqueness might
899 have been obtained with &errno that happened immediately in the
900 intermediate development versions of OpenSSL; this is no longer the
901 case, the numeric thread callback will now override the automatic use
903 [Geoff Thorpe, with help from Bodo Moeller]
905 *) Initial support for different CRL issuing certificates. This covers a
906 simple case where the self issued certificates in the chain exist and
907 the real CRL issuer is higher in the existing chain.
909 This work was sponsored by Google.
912 *) Removed effectively defunct crypto/store from the build.
915 *) Revamp of STACK to provide stronger type-checking. Still to come:
916 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
917 ASN1_STRING, CONF_VALUE.
920 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
921 RAM on SSL connections. This option can save about 34k per idle SSL.
924 *) Revamp of LHASH to provide stronger type-checking. Still to come:
925 STACK, TXT_DB, bsearch, qsort.
928 *) Initial support for Cryptographic Message Syntax (aka CMS) based
929 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
930 support for data, signedData, compressedData, digestedData and
931 encryptedData, envelopedData types included. Scripts to check against
932 RFC4134 examples draft and interop and consistency checks of many
933 content types and variants.
936 *) Add options to enc utility to support use of zlib compression BIO.
939 *) Extend mk1mf to support importing of options and assembly language
940 files from Configure script, currently only included in VC-WIN32.
941 The assembly language rules can now optionally generate the source
942 files from the associated perl scripts.
945 *) Implement remaining functionality needed to support GOST ciphersuites.
946 Interop testing has been performed using CryptoPro implementations.
947 [Victor B. Wagner <vitus@cryptocom.ru>]
949 *) s390x assembler pack.
952 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
956 *) Implement Opaque PRF Input TLS extension as specified in
957 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
958 official specification yet and no extension type assignment by
959 IANA exists, this extension (for now) will have to be explicitly
960 enabled when building OpenSSL by providing the extension number
961 to use. For example, specify an option
963 -DTLSEXT_TYPE_opaque_prf_input=0x9527
965 to the "config" or "Configure" script to enable the extension,
966 assuming extension number 0x9527 (which is a completely arbitrary
967 and unofficial assignment based on the MD5 hash of the Internet
968 Draft). Note that by doing so, you potentially lose
969 interoperability with other TLS implementations since these might
970 be using the same extension number for other purposes.
972 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
973 opaque PRF input value to use in the handshake. This will create
974 an interal copy of the length-'len' string at 'src', and will
975 return non-zero for success.
977 To get more control and flexibility, provide a callback function
980 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
981 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
985 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
988 Callback function 'cb' will be called in handshakes, and is
989 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
990 Argument 'arg' is for application purposes (the value as given to
991 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
992 be provided to the callback function). The callback function
993 has to return non-zero to report success: usually 1 to use opaque
994 PRF input just if possible, or 2 to enforce use of the opaque PRF
995 input. In the latter case, the library will abort the handshake
996 if opaque PRF input is not successfully negotiated.
998 Arguments 'peerinput' and 'len' given to the callback function
999 will always be NULL and 0 in the case of a client. A server will
1000 see the client's opaque PRF input through these variables if
1001 available (NULL and 0 otherwise). Note that if the server
1002 provides an opaque PRF input, the length must be the same as the
1003 length of the client's opaque PRF input.
1005 Note that the callback function will only be called when creating
1006 a new session (session resumption can resume whatever was
1007 previously negotiated), and will not be called in SSL 2.0
1008 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
1009 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
1010 for applications that need to enforce opaque PRF input.
1014 *) Update ssl code to support digests other than SHA1+MD5 for handshake
1017 [Victor B. Wagner <vitus@cryptocom.ru>]
1019 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1020 RFC4507bis. The encrypted ticket format is an encrypted encoded
1021 SSL_SESSION structure, that way new session features are automatically
1024 If a client application caches session in an SSL_SESSION structure
1025 support is transparent because tickets are now stored in the encoded
1028 The SSL_CTX structure automatically generates keys for ticket
1029 protection in servers so again support should be possible
1030 with no application modification.
1032 If a client or server wishes to disable RFC4507 support then the option
1033 SSL_OP_NO_TICKET can be set.
1035 Add a TLS extension debugging callback to allow the contents of any client
1036 or server extensions to be examined.
1038 This work was sponsored by Google.
1041 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
1042 OpenSSL should now compile cleanly on gcc 4.2
1043 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
1045 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
1046 support including streaming MAC support: this is required for GOST
1047 ciphersuite support.
1048 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
1050 *) Add option -stream to use PKCS#7 streaming in smime utility. New
1051 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
1052 to output in BER and PEM format.
1055 *) Experimental support for use of HMAC via EVP_PKEY interface. This
1056 allows HMAC to be handled via the EVP_DigestSign*() interface. The
1057 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
1058 ENGINE support for HMAC keys which are unextractable. New -mac and
1059 -macopt options to dgst utility.
1062 *) New option -sigopt to dgst utility. Update dgst to use
1063 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
1064 alternative signing paramaters such as X9.31 or PSS in the dgst
1068 *) Change ssl_cipher_apply_rule(), the internal function that does
1069 the work each time a ciphersuite string requests enabling
1070 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
1071 removing ("!foo+bar") a class of ciphersuites: Now it maintains
1072 the order of disabled ciphersuites such that those ciphersuites
1073 that most recently went from enabled to disabled not only stay
1074 in order with respect to each other, but also have higher priority
1075 than other disabled ciphersuites the next time ciphersuites are
1078 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
1079 the same ciphersuites as with "HIGH" alone, but in a specific
1080 order where the PSK ciphersuites come first (since they are the
1081 most recently disabled ciphersuites when "HIGH" is parsed).
1083 Also, change ssl_create_cipher_list() (using this new
1084 funcionality) such that between otherwise identical
1085 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
1089 *) Change ssl_create_cipher_list() so that it automatically
1090 arranges the ciphersuites in reasonable order before starting
1091 to process the rule string. Thus, the definition for "DEFAULT"
1092 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
1093 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
1094 This makes it much easier to arrive at a reasonable default order
1095 in applications for which anonymous ciphers are OK (meaning
1096 that you can't actually use DEFAULT).
1097 [Bodo Moeller; suggested by Victor Duchovni]
1099 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
1100 processing) into multiple integers instead of setting
1101 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
1102 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
1103 (These masks as well as the individual bit definitions are hidden
1104 away into the non-exported interface ssl/ssl_locl.h, so this
1105 change to the definition of the SSL_CIPHER structure shouldn't
1106 affect applications.) This give us more bits for each of these
1107 categories, so there is no longer a need to coagulate AES128 and
1108 AES256 into a single algorithm bit, and to coagulate Camellia128
1109 and Camellia256 into a single algorithm bit, which has led to all
1112 Thus, among other things, the kludge introduced in 0.9.7m and
1113 0.9.8e for masking out AES256 independently of AES128 or masking
1114 out Camellia256 independently of AES256 is not needed here in 0.9.9.
1116 With the change, we also introduce new ciphersuite aliases that
1117 so far were missing: "AES128", "AES256", "CAMELLIA128", and
1121 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
1122 Use the leftmost N bytes of the signature input if the input is
1123 larger than the prime q (with N being the size in bytes of q).
1126 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
1127 it yet and it is largely untested.
1130 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
1133 *) Initial incomplete changes to avoid need for function casts in OpenSSL
1134 some compilers (gcc 4.2 and later) reject their use. Safestack is
1135 reimplemented. Update ASN1 to avoid use of legacy functions.
1138 *) Win32/64 targets are linked with Winsock2.
1141 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
1142 to external functions. This can be used to increase CRL handling
1143 efficiency especially when CRLs are very large by (for example) storing
1144 the CRL revoked certificates in a database.
1147 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
1148 new CRLs added to a directory can be used. New command line option
1149 -verify_return_error to s_client and s_server. This causes real errors
1150 to be returned by the verify callback instead of carrying on no matter
1151 what. This reflects the way a "real world" verify callback would behave.
1154 *) GOST engine, supporting several GOST algorithms and public key formats.
1155 Kindly donated by Cryptocom.
1158 *) Partial support for Issuing Distribution Point CRL extension. CRLs
1159 partitioned by DP are handled but no indirect CRL or reason partitioning
1160 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
1161 selected via a scoring technique which handles IDP and AKID in CRLs.
1164 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
1165 will ultimately be used for all verify operations: this will remove the
1166 X509_STORE dependency on certificate verification and allow alternative
1167 lookup methods. X509_STORE based implementations of these two callbacks.
1170 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
1171 Modify get_crl() to find a valid (unexpired) CRL if possible.
1174 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
1175 this would be called X509_CRL_cmp() but that name is already used by
1176 a function that just compares CRL issuer names. Cache several CRL
1177 extensions in X509_CRL structure and cache CRLDP in X509.
1180 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
1181 this maps equivalent X509_NAME structures into a consistent structure.
1182 Name comparison can then be performed rapidly using memcmp().
1185 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
1189 *) Allow digests to supply their own micalg string for S/MIME type using
1190 the ctrl EVP_MD_CTRL_MICALG.
1193 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
1194 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
1195 ctrl. It can then customise the structure before and/or after signing
1199 *) New function OBJ_add_sigid() to allow application defined signature OIDs
1200 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
1201 to free up any added signature OIDs.
1204 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
1205 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
1206 digest and cipher tables. New options added to openssl utility:
1207 list-message-digest-algorithms and list-cipher-algorithms.
1210 *) Change the array representation of binary polynomials: the list
1211 of degrees of non-zero coefficients is now terminated with -1.
1212 Previously it was terminated with 0, which was also part of the
1213 value; thus, the array representation was not applicable to
1214 polynomials where t^0 has coefficient zero. This change makes
1215 the array representation useful in a more general context.
1218 *) Various modifications and fixes to SSL/TLS cipher string
1219 handling. For ECC, the code now distinguishes between fixed ECDH
1220 with RSA certificates on the one hand and with ECDSA certificates
1221 on the other hand, since these are separate ciphersuites. The
1222 unused code for Fortezza ciphersuites has been removed.
1224 For consistency with EDH, ephemeral ECDH is now called "EECDH"
1225 (not "ECDHE"). For consistency with the code for DH
1226 certificates, use of ECDH certificates is now considered ECDH
1227 authentication, not RSA or ECDSA authentication (the latter is
1228 merely the CA's signing algorithm and not actively used in the
1231 The temporary ciphersuite alias "ECCdraft" is no longer
1232 available, and ECC ciphersuites are no longer excluded from "ALL"
1233 and "DEFAULT". The following aliases now exist for RFC 4492
1234 ciphersuites, most of these by analogy with the DH case:
1236 kECDHr - ECDH cert, signed with RSA
1237 kECDHe - ECDH cert, signed with ECDSA
1238 kECDH - ECDH cert (signed with either RSA or ECDSA)
1239 kEECDH - ephemeral ECDH
1240 ECDH - ECDH cert or ephemeral ECDH
1246 AECDH - anonymous ECDH
1247 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
1251 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
1252 Use correct micalg parameters depending on digest(s) in signed message.
1255 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
1256 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
1259 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
1260 an engine to register a method. Add ENGINE lookups for methods and
1261 functional reference processing.
1264 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
1265 EVP_{Sign,Verify}* which allow an application to customise the signature
1269 *) New -resign option to smime utility. This adds one or more signers
1270 to an existing PKCS#7 signedData structure. Also -md option to use an
1271 alternative message digest algorithm for signing.
1274 *) Tidy up PKCS#7 routines and add new functions to make it easier to
1275 create PKCS7 structures containing multiple signers. Update smime
1276 application to support multiple signers.
1279 *) New -macalg option to pkcs12 utility to allow setting of an alternative
1283 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
1284 Reorganize PBE internals to lookup from a static table using NIDs,
1285 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
1286 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
1287 PRF which will be automatically used with PBES2.
1290 *) Replace the algorithm specific calls to generate keys in "req" with the
1294 *) Update PKCS#7 enveloped data routines to use new API. This is now
1295 supported by any public key method supporting the encrypt operation. A
1296 ctrl is added to allow the public key algorithm to examine or modify
1297 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
1301 *) Add a ctrl to asn1 method to allow a public key algorithm to express
1302 a default digest type to use. In most cases this will be SHA1 but some
1303 algorithms (such as GOST) need to specify an alternative digest. The
1304 return value indicates how strong the prefernce is 1 means optional and
1305 2 is mandatory (that is it is the only supported type). Modify
1306 ASN1_item_sign() to accept a NULL digest argument to indicate it should
1307 use the default md. Update openssl utilities to use the default digest
1308 type for signing if it is not explicitly indicated.
1311 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
1312 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
1313 signing method from the key type. This effectively removes the link
1314 between digests and public key types.
1317 *) Add an OID cross reference table and utility functions. Its purpose is to
1318 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
1319 rsaEncryption. This will allow some of the algorithm specific hackery
1320 needed to use the correct OID to be removed.
1323 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
1324 structures for PKCS7_sign(). They are now set up by the relevant public
1328 *) Add provisional EC pkey method with support for ECDSA and ECDH.
1331 *) Add support for key derivation (agreement) in the API, DH method and
1335 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
1336 public and private key formats. As a side effect these add additional
1337 command line functionality not previously available: DSA signatures can be
1338 generated and verified using pkeyutl and DH key support and generation in
1343 [Oliver Tappe <zooey@hirschkaefer.de>]
1345 *) New make target "install_html_docs" installs HTML renditions of the
1347 [Oliver Tappe <zooey@hirschkaefer.de>]
1349 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
1350 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
1351 support key and parameter generation and add initial key generation
1352 functionality for RSA.
1355 *) Add functions for main EVP_PKEY_method operations. The undocumented
1356 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
1357 EVP_PKEY_{encrypt,decrypt}_old.
1360 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
1361 key API, doesn't do much yet.
1364 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
1365 public key algorithms. New option to openssl utility:
1366 "list-public-key-algorithms" to print out info.
1369 *) Implement the Supported Elliptic Curves Extension for
1370 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1373 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
1374 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
1377 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
1378 utilities such as rsa, dsa, dsaparam etc except they process any key
1382 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
1383 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
1384 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
1388 *) Initial support for pluggable public key ASN1.
1389 De-spaghettify the public key ASN1 handling. Move public and private
1390 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
1391 algorithm specific handling to a single module within the relevant
1392 algorithm directory. Add functions to allow (near) opaque processing
1393 of public and private key structures.
1396 *) Implement the Supported Point Formats Extension for
1397 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
1400 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
1401 for the psk identity [hint] and the psk callback functions to the
1402 SSL_SESSION, SSL and SSL_CTX structure.
1405 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
1409 SSL_CTX_use_psk_identity_hint
1410 SSL_get_psk_identity_hint
1411 SSL_get_psk_identity
1412 SSL_use_psk_identity_hint
1414 [Mika Kousa and Pasi Eronen of Nokia Corporation]
1416 *) Add RFC 3161 compliant time stamp request creation, response generation
1417 and response verification functionality.
1418 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1420 *) Add initial support for TLS extensions, specifically for the server_name
1421 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1422 have new members for a host name. The SSL data structure has an
1423 additional member SSL_CTX *initial_ctx so that new sessions can be
1424 stored in that context to allow for session resumption, even after the
1425 SSL has been switched to a new SSL_CTX in reaction to a client's
1426 server_name extension.
1428 New functions (subject to change):
1430 SSL_get_servername()
1431 SSL_get_servername_type()
1434 New CTRL codes and macros (subject to change):
1436 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1437 - SSL_CTX_set_tlsext_servername_callback()
1438 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1439 - SSL_CTX_set_tlsext_servername_arg()
1440 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1442 openssl s_client has a new '-servername ...' option.
1444 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1445 '-key2 ...', '-servername_fatal' (subject to change). This allows
1446 testing the HostName extension for a specific single host name ('-cert'
1447 and '-key' remain fallbacks for handshakes without HostName
1448 negotiation). If the unrecogninzed_name alert has to be sent, this by
1449 default is a warning; it becomes fatal with the '-servername_fatal'
1452 [Peter Sylvester, Remy Allais, Christophe Renou]
1454 *) Whirlpool hash implementation is added.
1457 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1458 bn(64,32). Because of instruction set limitations it doesn't have
1459 any negative impact on performance. This was done mostly in order
1460 to make it possible to share assembler modules, such as bn_mul_mont
1461 implementations, between 32- and 64-bit builds without hassle.
1464 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1465 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1469 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1470 dedicated Montgomery multiplication procedure, is introduced.
1471 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1472 "64-bit" performance on certain 32-bit targets.
1475 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1476 in SSL structures. New SSL ctrl to set maximum send fragment size.
1477 Save memory by seeting the I/O buffer sizes dynamically instead of
1478 using the maximum available value.
1481 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1482 in addition to the text details.
1485 *) Very, very preliminary EXPERIMENTAL support for printing of general
1486 ASN1 structures. This currently produces rather ugly output and doesn't
1487 handle several customised structures at all.
1490 *) Integrated support for PVK file format and some related formats such
1491 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1492 these in the 'rsa' and 'dsa' utilities.
1495 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1498 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1499 place for the (very old) "NETSCAPE" format certificates which are now
1500 handled using new ASN1 code equivalents.
1503 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1504 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1505 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1508 *) Modify CRL distribution points extension code to print out previously
1509 unsupported fields. Enhance extension setting code to allow setting of
1513 *) Add print and set support for Issuing Distribution Point CRL extension.
1516 *) Change 'Configure' script to enable Camellia by default.
1519 Changes between 0.9.8s and 0.9.8t [18 Jan 2012]
1521 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
1522 Thanks to Antonio Martin, Enterprise Secure Access Research and
1523 Development, Cisco Systems, Inc. for discovering this bug and
1524 preparing a fix. (CVE-2012-0050)
1527 Changes between 0.9.8r and 0.9.8s [4 Jan 2012]
1529 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
1530 of the Vaudenay padding oracle attack on CBC mode encryption
1531 which enables an efficient plaintext recovery attack against
1532 the OpenSSL implementation of DTLS. Their attack exploits timing
1533 differences arising during decryption processing. A research
1534 paper describing this attack can be found at:
1535 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
1536 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
1537 Security Group at Royal Holloway, University of London
1538 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
1539 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
1540 for preparing the fix. (CVE-2011-4108)
1541 [Robin Seggelmann, Michael Tuexen]
1543 *) Stop policy check failure freeing same buffer twice. (CVE-2011-4109)
1544 [Ben Laurie, Kasper <ekasper@google.com>]
1546 *) Clear bytes used for block padding of SSL 3.0 records.
1548 [Adam Langley (Google)]
1550 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
1551 Kadianakis <desnacked@gmail.com> for discovering this issue and
1552 Adam Langley for preparing the fix. (CVE-2011-4619)
1553 [Adam Langley (Google)]
1555 *) Prevent malformed RFC3779 data triggering an assertion failure.
1556 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
1557 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
1558 [Rob Austein <sra@hactrn.net>]
1560 *) Fix ssl_ciph.c set-up race.
1561 [Adam Langley (Google)]
1563 *) Fix spurious failures in ecdsatest.c.
1564 [Emilia Käsper (Google)]
1566 *) Fix the BIO_f_buffer() implementation (which was mixing different
1567 interpretations of the '..._len' fields).
1568 [Adam Langley (Google)]
1570 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
1571 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
1572 threads won't reuse the same blinding coefficients.
1574 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
1575 lock to call BN_BLINDING_invert_ex, and avoids one use of
1576 BN_BLINDING_update for each BN_BLINDING structure (previously,
1577 the last update always remained unused).
1578 [Emilia Käsper (Google)]
1580 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
1581 for multi-threaded use of ECDH.
1582 [Adam Langley (Google)]
1584 *) Fix x509_name_ex_d2i memory leak on bad inputs.
1587 *) Add protection against ECDSA timing attacks as mentioned in the paper
1588 by Billy Bob Brumley and Nicola Tuveri, see:
1590 http://eprint.iacr.org/2011/232.pdf
1592 [Billy Bob Brumley and Nicola Tuveri]
1594 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1596 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1597 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1599 *) Fix bug in string printing code: if *any* escaping is enabled we must
1600 escape the escape character (backslash) or the resulting string is
1604 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1606 *) Disable code workaround for ancient and obsolete Netscape browsers
1607 and servers: an attacker can use it in a ciphersuite downgrade attack.
1608 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1611 *) Fixed J-PAKE implementation error, originally discovered by
1612 Sebastien Martini, further info and confirmation from Stefan
1613 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1616 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1618 *) Fix extension code to avoid race conditions which can result in a buffer
1619 overrun vulnerability: resumed sessions must not be modified as they can
1620 be shared by multiple threads. CVE-2010-3864
1623 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1626 *) Don't reencode certificate when calculating signature: cache and use
1627 the original encoding instead. This makes signature verification of
1628 some broken encodings work correctly.
1631 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1632 is also one of the inputs.
1633 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1635 *) Don't repeatedly append PBE algorithms to table if they already exist.
1636 Sort table on each new add. This effectively makes the table read only
1637 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1641 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1643 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1646 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1647 access or freeing data twice (CVE-2010-0742)
1648 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1650 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1651 common in certificates and some applications which only call
1652 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1656 Reduce copying into .apps and .test in makevms.com
1657 Don't try to use blank CA certificate in CA.com
1658 Allow use of C files from original directories in maketests.com
1659 [Steven M. Schweda" <sms@antinode.info>]
1661 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1663 *) When rejecting SSL/TLS records due to an incorrect version number, never
1664 update s->server with a new major version number. As of
1665 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1666 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1667 the previous behavior could result in a read attempt at NULL when
1668 receiving specific incorrect SSL/TLS records once record payload
1669 protection is active. (CVE-2010-0740)
1670 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1672 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1673 could be crashed if the relevant tables were not present (e.g. chrooted).
1674 [Tomas Hoger <thoger@redhat.com>]
1676 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1678 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1679 [Martin Olsson, Neel Mehta]
1681 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1682 accommodate for stack sorting, always a write lock!).
1685 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1686 excessive delays in the RAND_poll(): over a minute. As a workaround
1687 include a time check in the inner Heap32Next loop too.
1690 *) The code that handled flushing of data in SSL/TLS originally used the
1691 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1692 the problem outlined in PR#1949. The fix suggested there however can
1693 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1694 of Apache). So instead simplify the code to flush unconditionally.
1695 This should be fine since flushing with no data to flush is a no op.
1698 *) Handle TLS versions 2.0 and later properly and correctly use the
1699 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1700 off ancient servers have a habit of sticking around for a while...
1703 *) Modify compression code so it frees up structures without using the
1704 ex_data callbacks. This works around a problem where some applications
1705 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1706 restarting) then use compression (e.g. SSL with compression) later.
1707 This results in significant per-connection memory leaks and
1708 has caused some security issues including CVE-2008-1678 and
1712 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1713 change when encrypting or decrypting.
1716 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1717 connect and renegotiate with servers which do not support RI.
1718 Until RI is more widely deployed this option is enabled by default.
1721 *) Add "missing" ssl ctrls to clear options and mode.
1724 *) If client attempts to renegotiate and doesn't support RI respond with
1725 a no_renegotiation alert as required by RFC5746. Some renegotiating
1726 TLS clients will continue a connection gracefully when they receive
1727 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1728 waiting for a server hello which it will never receive. Now we treat a
1729 received no_renegotiation alert as a fatal error. This is because
1730 applications requesting a renegotiation might well expect it to succeed
1731 and would have no code in place to handle the server denying it so the
1732 only safe thing to do is to terminate the connection.
1735 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1736 peer supports secure renegotiation and 0 otherwise. Print out peer
1737 renegotiation support in s_client/s_server.
1740 *) Replace the highly broken and deprecated SPKAC certification method with
1741 the updated NID creation version. This should correctly handle UTF8.
1744 *) Implement RFC5746. Re-enable renegotiation but require the extension
1745 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1746 turns out to be a bad idea. It has been replaced by
1747 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1748 SSL_CTX_set_options(). This is really not recommended unless you
1749 know what you are doing.
1750 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1752 *) Fixes to stateless session resumption handling. Use initial_ctx when
1753 issuing and attempting to decrypt tickets in case it has changed during
1754 servername handling. Use a non-zero length session ID when attempting
1755 stateless session resumption: this makes it possible to determine if
1756 a resumption has occurred immediately after receiving server hello
1757 (several places in OpenSSL subtly assume this) instead of later in
1761 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1762 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1763 fixes for a few places where the return code is not checked
1765 [Julia Lawall <julia@diku.dk>]
1767 *) Add --strict-warnings option to Configure script to include devteam
1768 warnings in other configurations.
1771 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1772 makes it possible to install openssl libraries in locations which
1773 have names other than "lib", for example "/usr/lib64" which some
1775 [Steve Henson, based on patch from Jeremy Utley]
1777 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1778 X690 8.9.12 and can produce some misleading textual output of OIDs.
1779 [Steve Henson, reported by Dan Kaminsky]
1781 *) Delete MD2 from algorithm tables. This follows the recommendation in
1782 several standards that it is not used in new applications due to
1783 several cryptographic weaknesses. For binary compatibility reasons
1784 the MD2 API is still compiled in by default.
1787 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1791 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1792 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1794 [Guenter <lists@gknw.net>]
1796 *) Fix the server certificate chain building code to use X509_verify_cert(),
1797 it used to have an ad-hoc builder which was unable to cope with anything
1798 other than a simple chain.
1799 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1801 *) Don't check self signed certificate signatures in X509_verify_cert()
1802 by default (a flag can override this): it just wastes time without
1803 adding any security. As a useful side effect self signed root CAs
1804 with non-FIPS digests are now usable in FIPS mode.
1807 *) In dtls1_process_out_of_seq_message() the check if the current message
1808 is already buffered was missing. For every new message was memory
1809 allocated, allowing an attacker to perform an denial of service attack
1810 with sending out of seq handshake messages until there is no memory
1811 left. Additionally every future messege was buffered, even if the
1812 sequence number made no sense and would be part of another handshake.
1813 So only messages with sequence numbers less than 10 in advance will be
1814 buffered. (CVE-2009-1378)
1815 [Robin Seggelmann, discovered by Daniel Mentz]
1817 *) Records are buffered if they arrive with a future epoch to be
1818 processed after finishing the corresponding handshake. There is
1819 currently no limitation to this buffer allowing an attacker to perform
1820 a DOS attack with sending records with future epochs until there is no
1821 memory left. This patch adds the pqueue_size() function to detemine
1822 the size of a buffer and limits the record buffer to 100 entries.
1824 [Robin Seggelmann, discovered by Daniel Mentz]
1826 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1827 parent structure is freed. (CVE-2009-1379)
1830 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1831 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1834 [Ilya O. <vrghost@gmail.com>]
1836 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1838 *) Disable renegotiation completely - this fixes a severe security
1839 problem (CVE-2009-3555) at the cost of breaking all
1840 renegotiation. Renegotiation can be re-enabled by setting
1841 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1842 run-time. This is really not recommended unless you know what
1846 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1848 *) Don't set val to NULL when freeing up structures, it is freed up by
1849 underlying code. If sizeof(void *) > sizeof(long) this can result in
1850 zeroing past the valid field. (CVE-2009-0789)
1851 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1853 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1854 checked correctly. This would allow some invalid signed attributes to
1855 appear to verify correctly. (CVE-2009-0591)
1856 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1858 *) Reject UniversalString and BMPString types with invalid lengths. This
1859 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1860 a legal length. (CVE-2009-0590)
1863 *) Set S/MIME signing as the default purpose rather than setting it
1864 unconditionally. This allows applications to override it at the store
1868 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1869 to handle some structures.
1872 *) Improve efficiency of mem_gets: don't search whole buffer each time
1874 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1876 *) New -hex option for openssl rand.
1879 *) Print out UTF8String and NumericString when parsing ASN1.
1882 *) Support NumericString type for name components.
1885 *) Allow CC in the environment to override the automatically chosen
1886 compiler. Note that nothing is done to ensure flags work with the
1890 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1892 *) Properly check EVP_VerifyFinal() and similar return values
1894 [Ben Laurie, Bodo Moeller, Google Security Team]
1896 *) Enable TLS extensions by default.
1899 *) Allow the CHIL engine to be loaded, whether the application is
1900 multithreaded or not. (This does not release the developer from the
1901 obligation to set up the dynamic locking callbacks.)
1902 [Sander Temme <sander@temme.net>]
1904 *) Use correct exit code if there is an error in dgst command.
1905 [Steve Henson; problem pointed out by Roland Dirlewanger]
1907 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1908 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1911 *) Add experimental JPAKE support, including demo authentication in
1912 s_client and s_server.
1915 *) Set the comparison function in v3_addr_canonize().
1916 [Rob Austein <sra@hactrn.net>]
1918 *) Add support for XMPP STARTTLS in s_client.
1919 [Philip Paeps <philip@freebsd.org>]
1921 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1922 to ensure that even with this option, only ciphersuites in the
1923 server's preference list will be accepted. (Note that the option
1924 applies only when resuming a session, so the earlier behavior was
1925 just about the algorithm choice for symmetric cryptography.)
1928 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1930 *) Fix NULL pointer dereference if a DTLS server received
1931 ChangeCipherSpec as first record (CVE-2009-1386).
1934 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1935 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1938 *) The fix in 0.9.8c that supposedly got rid of unsafe
1939 double-checked locking was incomplete for RSA blinding,
1940 addressing just one layer of what turns out to have been
1941 doubly unsafe triple-checked locking.
1943 So now fix this for real by retiring the MONT_HELPER macro
1944 in crypto/rsa/rsa_eay.c.
1946 [Bodo Moeller; problem pointed out by Marius Schilder]
1948 *) Various precautionary measures:
1950 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1952 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1953 (NB: This would require knowledge of the secret session ticket key
1954 to exploit, in which case you'd be SOL either way.)
1956 - Change bn_nist.c so that it will properly handle input BIGNUMs
1957 outside the expected range.
1959 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1962 [Neel Mehta, Bodo Moeller]
1964 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1965 the load fails. Useful for distros.
1966 [Ben Laurie and the FreeBSD team]
1968 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1971 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1974 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1976 This work was sponsored by Logica.
1979 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1980 keystores. Support for SSL/TLS client authentication too.
1981 Not compiled unless enable-capieng specified to Configure.
1983 This work was sponsored by Logica.
1986 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1987 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1988 attribute creation routines such as certifcate requests and PKCS#12
1992 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1994 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1995 handshake which could lead to a cilent crash as found using the
1996 Codenomicon TLS test suite (CVE-2008-1672)
1997 [Steve Henson, Mark Cox]
1999 *) Fix double free in TLS server name extensions which could lead to
2000 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
2003 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
2005 Clear the error queue to ensure that error entries left from
2006 older function calls do not interfere with the correct operation.
2007 [Lutz Jaenicke, Erik de Castro Lopo]
2009 *) Remove root CA certificates of commercial CAs:
2011 The OpenSSL project does not recommend any specific CA and does not
2012 have any policy with respect to including or excluding any CA.
2013 Therefore it does not make any sense to ship an arbitrary selection
2014 of root CA certificates with the OpenSSL software.
2017 *) RSA OAEP patches to fix two separate invalid memory reads.
2018 The first one involves inputs when 'lzero' is greater than
2019 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
2020 before the beginning of from). The second one involves inputs where
2021 the 'db' section contains nothing but zeroes (there is a one-byte
2022 invalid read after the end of 'db').
2023 [Ivan Nestlerode <inestlerode@us.ibm.com>]
2025 *) Partial backport from 0.9.9-dev:
2027 Introduce bn_mul_mont (dedicated Montgomery multiplication
2028 procedure) as a candidate for BIGNUM assembler implementation.
2029 While 0.9.9-dev uses assembler for various architectures, only
2030 x86_64 is available by default here in the 0.9.8 branch, and
2031 32-bit x86 is available through a compile-time setting.
2033 To try the 32-bit x86 assembler implementation, use Configure
2034 option "enable-montasm" (which exists only for this backport).
2036 As "enable-montasm" for 32-bit x86 disclaims code stability
2037 anyway, in this constellation we activate additional code
2038 backported from 0.9.9-dev for further performance improvements,
2039 namely BN_from_montgomery_word. (To enable this otherwise,
2040 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
2042 [Andy Polyakov (backport partially by Bodo Moeller)]
2044 *) Add TLS session ticket callback. This allows an application to set
2045 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
2046 values. This is useful for key rollover for example where several key
2047 sets may exist with different names.
2050 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
2051 This was broken until now in 0.9.8 releases, such that the only way
2052 a registered ENGINE could be used (assuming it initialises
2053 successfully on the host) was to explicitly set it as the default
2054 for the relevant algorithms. This is in contradiction with 0.9.7
2055 behaviour and the documentation. With this fix, when an ENGINE is
2056 registered into a given algorithm's table of implementations, the
2057 'uptodate' flag is reset so that auto-discovery will be used next
2058 time a new context for that algorithm attempts to select an
2060 [Ian Lister (tweaked by Geoff Thorpe)]
2062 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
2063 implemention in the following ways:
2065 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
2068 Lack of BER streaming support means one pass streaming processing is
2069 only supported if data is detached: setting the streaming flag is
2070 ignored for embedded content.
2072 CMS support is disabled by default and must be explicitly enabled
2073 with the enable-cms configuration option.
2076 *) Update the GMP engine glue to do direct copies between BIGNUM and
2077 mpz_t when openssl and GMP use the same limb size. Otherwise the
2078 existing "conversion via a text string export" trick is still used.
2079 [Paul Sheer <paulsheer@gmail.com>]
2081 *) Zlib compression BIO. This is a filter BIO which compressed and
2082 uncompresses any data passed through it.
2085 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
2086 RFC3394 compatible AES key wrapping.
2089 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
2090 sets string data without copying. X509_ALGOR_set0() and
2091 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
2092 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
2093 from an X509_ATTRIBUTE structure optionally checking it occurs only
2094 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
2098 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
2099 to get the expected BN_FLG_CONSTTIME behavior.
2100 [Bodo Moeller (Google)]
2104 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
2105 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
2106 - added some more tests to do_tests.pl
2107 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
2108 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
2109 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
2110 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
2111 - various changes to netware.pl to enable gcc-cross builds on Win32
2113 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
2114 - various changes to fix missing prototype warnings
2115 - fixed x86nasm.pl to create correct asm files for NASM COFF output
2116 - added AES, WHIRLPOOL and CPUID assembler code to build files
2117 - added missing AES assembler make rules to mk1mf.pl
2118 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
2119 [Guenter Knauf <eflash@gmx.net>]
2121 *) Implement certificate status request TLS extension defined in RFC3546.
2122 A client can set the appropriate parameters and receive the encoded
2123 OCSP response via a callback. A server can query the supplied parameters
2124 and set the encoded OCSP response in the callback. Add simplified examples
2125 to s_client and s_server.
2128 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
2130 *) Fix various bugs:
2131 + Binary incompatibility of ssl_ctx_st structure
2132 + DTLS interoperation with non-compliant servers
2133 + Don't call get_session_cb() without proposed session
2134 + Fix ia64 assembler code
2135 [Andy Polyakov, Steve Henson]
2137 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
2139 *) DTLS Handshake overhaul. There were longstanding issues with
2140 OpenSSL DTLS implementation, which were making it impossible for
2141 RFC 4347 compliant client to communicate with OpenSSL server.
2142 Unfortunately just fixing these incompatibilities would "cut off"
2143 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
2144 server keeps tolerating non RFC compliant syntax. The opposite is
2145 not true, 0.9.8f client can not communicate with earlier server.
2146 This update even addresses CVE-2007-4995.
2149 *) Changes to avoid need for function casts in OpenSSL: some compilers
2150 (gcc 4.2 and later) reject their use.
2151 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
2154 *) Add RFC4507 support to OpenSSL. This includes the corrections in
2155 RFC4507bis. The encrypted ticket format is an encrypted encoded
2156 SSL_SESSION structure, that way new session features are automatically
2159 If a client application caches session in an SSL_SESSION structure
2160 support is transparent because tickets are now stored in the encoded
2163 The SSL_CTX structure automatically generates keys for ticket
2164 protection in servers so again support should be possible
2165 with no application modification.
2167 If a client or server wishes to disable RFC4507 support then the option
2168 SSL_OP_NO_TICKET can be set.
2170 Add a TLS extension debugging callback to allow the contents of any client
2171 or server extensions to be examined.
2173 This work was sponsored by Google.
2176 *) Add initial support for TLS extensions, specifically for the server_name
2177 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
2178 have new members for a host name. The SSL data structure has an
2179 additional member SSL_CTX *initial_ctx so that new sessions can be
2180 stored in that context to allow for session resumption, even after the
2181 SSL has been switched to a new SSL_CTX in reaction to a client's
2182 server_name extension.
2184 New functions (subject to change):
2186 SSL_get_servername()
2187 SSL_get_servername_type()
2190 New CTRL codes and macros (subject to change):
2192 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
2193 - SSL_CTX_set_tlsext_servername_callback()
2194 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
2195 - SSL_CTX_set_tlsext_servername_arg()
2196 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
2198 openssl s_client has a new '-servername ...' option.
2200 openssl s_server has new options '-servername_host ...', '-cert2 ...',
2201 '-key2 ...', '-servername_fatal' (subject to change). This allows
2202 testing the HostName extension for a specific single host name ('-cert'
2203 and '-key' remain fallbacks for handshakes without HostName
2204 negotiation). If the unrecogninzed_name alert has to be sent, this by
2205 default is a warning; it becomes fatal with the '-servername_fatal'
2208 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
2210 *) Add AES and SSE2 assembly language support to VC++ build.
2213 *) Mitigate attack on final subtraction in Montgomery reduction.
2216 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
2217 (which previously caused an internal error).
2220 *) Squeeze another 10% out of IGE mode when in != out.
2223 *) AES IGE mode speedup.
2224 [Dean Gaudet (Google)]
2226 *) Add the Korean symmetric 128-bit cipher SEED (see
2227 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
2228 add SEED ciphersuites from RFC 4162:
2230 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
2231 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
2232 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
2233 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
2235 To minimize changes between patchlevels in the OpenSSL 0.9.8
2236 series, SEED remains excluded from compilation unless OpenSSL
2237 is configured with 'enable-seed'.
2238 [KISA, Bodo Moeller]
2240 *) Mitigate branch prediction attacks, which can be practical if a
2241 single processor is shared, allowing a spy process to extract
2242 information. For detailed background information, see
2243 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
2244 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
2245 and Necessary Software Countermeasures"). The core of the change
2246 are new versions BN_div_no_branch() and
2247 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
2248 respectively, which are slower, but avoid the security-relevant
2249 conditional branches. These are automatically called by BN_div()
2250 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
2251 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
2252 remove a conditional branch.
2254 BN_FLG_CONSTTIME is the new name for the previous
2255 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
2256 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
2257 in the exponent causes BN_mod_exp_mont() to use the alternative
2258 implementation in BN_mod_exp_mont_consttime().) The old name
2259 remains as a deprecated alias.
2261 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
2262 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
2263 constant-time implementations for more than just exponentiation.
2264 Here too the old name is kept as a deprecated alias.
2266 BN_BLINDING_new() will now use BN_dup() for the modulus so that
2267 the BN_BLINDING structure gets an independent copy of the
2268 modulus. This means that the previous "BIGNUM *m" argument to
2269 BN_BLINDING_new() and to BN_BLINDING_create_param() now
2270 essentially becomes "const BIGNUM *m", although we can't actually
2271 change this in the header file before 0.9.9. It allows
2272 RSA_setup_blinding() to use BN_with_flags() on the modulus to
2273 enable BN_FLG_CONSTTIME.
2275 [Matthew D Wood (Intel Corp)]
2277 *) In the SSL/TLS server implementation, be strict about session ID
2278 context matching (which matters if an application uses a single
2279 external cache for different purposes). Previously,
2280 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2281 set. This did ensure strict client verification, but meant that,
2282 with applications using a single external cache for quite
2283 different requirements, clients could circumvent ciphersuite
2284 restrictions for a given session ID context by starting a session
2285 in a different context.
2288 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2289 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2290 authentication-only ciphersuites.
2293 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
2294 not complete and could lead to a possible single byte overflow
2295 (CVE-2007-5135) [Ben Laurie]
2297 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
2299 *) Since AES128 and AES256 (and similarly Camellia128 and
2300 Camellia256) share a single mask bit in the logic of
2301 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2302 kludge to work properly if AES128 is available and AES256 isn't
2303 (or if Camellia128 is available and Camellia256 isn't).
2306 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
2307 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
2308 When a point or a seed is encoded in a BIT STRING, we need to
2309 prevent the removal of trailing zero bits to get the proper DER
2310 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
2311 of a NamedBitList, for which trailing 0 bits need to be removed.)
2314 *) Have SSL/TLS server implementation tolerate "mismatched" record
2315 protocol version while receiving ClientHello even if the
2316 ClientHello is fragmented. (The server can't insist on the
2317 particular protocol version it has chosen before the ServerHello
2318 message has informed the client about his choice.)
2321 *) Add RFC 3779 support.
2322 [Rob Austein for ARIN, Ben Laurie]
2324 *) Load error codes if they are not already present instead of using a
2325 static variable. This allows them to be cleanly unloaded and reloaded.
2326 Improve header file function name parsing.
2329 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
2330 or CAPABILITY handshake as required by RFCs.
2333 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
2335 *) Introduce limits to prevent malicious keys being able to
2336 cause a denial of service. (CVE-2006-2940)
2337 [Steve Henson, Bodo Moeller]
2339 *) Fix ASN.1 parsing of certain invalid structures that can result
2340 in a denial of service. (CVE-2006-2937) [Steve Henson]
2342 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2343 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2345 *) Fix SSL client code which could crash if connecting to a
2346 malicious SSLv2 server. (CVE-2006-4343)
2347 [Tavis Ormandy and Will Drewry, Google Security Team]
2349 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
2350 match only those. Before that, "AES256-SHA" would be interpreted
2351 as a pattern and match "AES128-SHA" too (since AES128-SHA got
2352 the same strength classification in 0.9.7h) as we currently only
2353 have a single AES bit in the ciphersuite description bitmap.
2354 That change, however, also applied to ciphersuite strings such as
2355 "RC4-MD5" that intentionally matched multiple ciphersuites --
2356 namely, SSL 2.0 ciphersuites in addition to the more common ones
2357 from SSL 3.0/TLS 1.0.
2359 So we change the selection algorithm again: Naming an explicit
2360 ciphersuite selects this one ciphersuite, and any other similar
2361 ciphersuite (same bitmap) from *other* protocol versions.
2362 Thus, "RC4-MD5" again will properly select both the SSL 2.0
2363 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
2365 Since SSL 2.0 does not have any ciphersuites for which the
2366 128/256 bit distinction would be relevant, this works for now.
2367 The proper fix will be to use different bits for AES128 and
2368 AES256, which would have avoided the problems from the beginning;
2369 however, bits are scarce, so we can only do this in a new release
2370 (not just a patchlevel) when we can change the SSL_CIPHER
2371 definition to split the single 'unsigned long mask' bitmap into
2372 multiple values to extend the available space.
2376 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
2378 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2379 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2381 *) Add AES IGE and biIGE modes.
2384 *) Change the Unix randomness entropy gathering to use poll() when
2385 possible instead of select(), since the latter has some
2386 undesirable limitations.
2387 [Darryl Miles via Richard Levitte and Bodo Moeller]
2389 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
2390 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
2391 cannot be implicitly activated as part of, e.g., the "AES" alias.
2392 However, please upgrade to OpenSSL 0.9.9[-dev] for
2393 non-experimental use of the ECC ciphersuites to get TLS extension
2394 support, which is required for curve and point format negotiation
2395 to avoid potential handshake problems.
2398 *) Disable rogue ciphersuites:
2400 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2401 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2402 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2404 The latter two were purportedly from
2405 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2408 Also deactivate the remaining ciphersuites from
2409 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2410 unofficial, and the ID has long expired.
2413 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2414 dual-core machines) and other potential thread-safety issues.
2417 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
2418 versions), which is now available for royalty-free use
2419 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
2420 Also, add Camellia TLS ciphersuites from RFC 4132.
2422 To minimize changes between patchlevels in the OpenSSL 0.9.8
2423 series, Camellia remains excluded from compilation unless OpenSSL
2424 is configured with 'enable-camellia'.
2427 *) Disable the padding bug check when compression is in use. The padding
2428 bug check assumes the first packet is of even length, this is not
2429 necessarily true if compresssion is enabled and can result in false
2430 positives causing handshake failure. The actual bug test is ancient
2431 code so it is hoped that implementations will either have fixed it by
2432 now or any which still have the bug do not support compression.
2435 Changes between 0.9.8a and 0.9.8b [04 May 2006]
2437 *) When applying a cipher rule check to see if string match is an explicit
2438 cipher suite and only match that one cipher suite if it is.
2441 *) Link in manifests for VC++ if needed.
2442 [Austin Ziegler <halostatue@gmail.com>]
2444 *) Update support for ECC-based TLS ciphersuites according to
2445 draft-ietf-tls-ecc-12.txt with proposed changes (but without
2446 TLS extensions, which are supported starting with the 0.9.9
2447 branch, not in the OpenSSL 0.9.8 branch).
2450 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
2451 opaque EVP_CIPHER_CTX handling.
2454 *) Fixes and enhancements to zlib compression code. We now only use
2455 "zlib1.dll" and use the default __cdecl calling convention on Win32
2456 to conform with the standards mentioned here:
2457 http://www.zlib.net/DLL_FAQ.txt
2458 Static zlib linking now works on Windows and the new --with-zlib-include
2459 --with-zlib-lib options to Configure can be used to supply the location
2460 of the headers and library. Gracefully handle case where zlib library
2464 *) Several fixes and enhancements to the OID generation code. The old code
2465 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
2466 handle numbers larger than ULONG_MAX, truncated printing and had a
2467 non standard OBJ_obj2txt() behaviour.
2470 *) Add support for building of engines under engine/ as shared libraries
2471 under VC++ build system.
2474 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
2475 Hopefully, we will not see any false combination of paths any more.
2478 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
2480 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2481 (part of SSL_OP_ALL). This option used to disable the
2482 countermeasure against man-in-the-middle protocol-version
2483 rollback in the SSL 2.0 server implementation, which is a bad
2484 idea. (CVE-2005-2969)
2486 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2487 for Information Security, National Institute of Advanced Industrial
2488 Science and Technology [AIST], Japan)]
2490 *) Add two function to clear and return the verify parameter flags.
2493 *) Keep cipherlists sorted in the source instead of sorting them at
2494 runtime, thus removing the need for a lock.
2497 *) Avoid some small subgroup attacks in Diffie-Hellman.
2498 [Nick Mathewson and Ben Laurie]
2500 *) Add functions for well-known primes.
2503 *) Extended Windows CE support.
2504 [Satoshi Nakamura and Andy Polyakov]
2506 *) Initialize SSL_METHOD structures at compile time instead of during
2507 runtime, thus removing the need for a lock.
2510 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2511 attempting to decrypt each encrypted key in turn. Add support to
2515 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2517 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2520 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2523 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2524 key into the same file any more.
2527 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2530 *) Add -utf8 command line and config file option to 'ca'.
2531 [Stefan <stf@udoma.org]
2533 *) Removed the macro des_crypt(), as it seems to conflict with some
2534 libraries. Use DES_crypt().
2537 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2538 involves renaming the source and generated shared-libs for
2539 both. The engines will accept the corrected or legacy ids
2540 ('ncipher' and '4758_cca' respectively) when binding. NB,
2541 this only applies when building 'shared'.
2542 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2544 *) Add attribute functions to EVP_PKEY structure. Modify
2545 PKCS12_create() to recognize a CSP name attribute and
2546 use it. Make -CSP option work again in pkcs12 utility.
2549 *) Add new functionality to the bn blinding code:
2550 - automatic re-creation of the BN_BLINDING parameters after
2551 a fixed number of uses (currently 32)
2552 - add new function for parameter creation
2553 - introduce flags to control the update behaviour of the
2554 BN_BLINDING parameters
2555 - hide BN_BLINDING structure
2556 Add a second BN_BLINDING slot to the RSA structure to improve
2557 performance when a single RSA object is shared among several
2561 *) Add support for DTLS.
2562 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2564 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2565 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2568 *) Remove buggy and incompletet DH cert support from
2569 ssl/ssl_rsa.c and ssl/s3_both.c
2572 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2573 the apps/openssl applications.
2576 *) Compile clean with "-Wall -Wmissing-prototypes
2577 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2578 DEBUG_SAFESTACK must also be set.
2581 *) Change ./Configure so that certain algorithms can be disabled by default.
2582 The new counterpiece to "no-xxx" is "enable-xxx".
2584 The patented RC5 and MDC2 algorithms will now be disabled unless
2585 "enable-rc5" and "enable-mdc2", respectively, are specified.
2587 (IDEA remains enabled despite being patented. This is because IDEA
2588 is frequently required for interoperability, and there is no license
2589 fee for non-commercial use. As before, "no-idea" can be used to
2590 avoid this algorithm.)
2594 *) Add processing of proxy certificates (see RFC 3820). This work was
2595 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2596 EGEE (Enabling Grids for E-science in Europe).
2599 *) RC4 performance overhaul on modern architectures/implementations, such
2600 as Intel P4, IA-64 and AMD64.
2603 *) New utility extract-section.pl. This can be used specify an alternative
2604 section number in a pod file instead of having to treat each file as
2605 a separate case in Makefile. This can be done by adding two lines to the
2608 =for comment openssl_section:XXX
2610 The blank line is mandatory.
2614 *) New arguments -certform, -keyform and -pass for s_client and s_server
2615 to allow alternative format key and certificate files and passphrase
2619 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2620 update associated structures and add various utility functions.
2622 Add new policy related verify parameters, include policy checking in
2623 standard verify code. Enhance 'smime' application with extra parameters
2624 to support policy checking and print out.
2627 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2628 Nehemiah processors. These extensions support AES encryption in hardware
2629 as well as RNG (though RNG support is currently disabled).
2630 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2632 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2635 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2636 [Andy Polyakov and a number of other people]
2638 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2639 implementation contributed by IBM.
2640 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2642 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2643 exponent rather than 'unsigned long'. There is a corresponding change to
2644 the new 'rsa_keygen' element of the RSA_METHOD structure.
2645 [Jelte Jansen, Geoff Thorpe]
2647 *) Functionality for creating the initial serial number file is now
2648 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2650 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2651 number file to 1, which is bound to cause problems. To avoid
2652 the problems while respecting compatibility between different 0.9.7
2653 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2654 CA.pl for serial number initialization. With the new release 0.9.8,
2655 we can fix the problem directly in the 'ca' utility.)
2658 *) Reduced header interdepencies by declaring more opaque objects in
2659 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2660 give fewer recursive includes, which could break lazy source code - so
2661 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2662 developers should define this symbol when building and using openssl to
2663 ensure they track the recommended behaviour, interfaces, [etc], but
2664 backwards-compatible behaviour prevails when this isn't defined.
2667 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2670 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2671 This will generate a random key of the appropriate length based on the
2672 cipher context. The EVP_CIPHER can provide its own random key generation
2673 routine to support keys of a specific form. This is used in the des and
2674 3des routines to generate a key of the correct parity. Update S/MIME
2675 code to use new functions and hence generate correct parity DES keys.
2676 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2677 valid (weak or incorrect parity).
2680 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2681 as looking them up. This is useful when the verified structure may contain
2682 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2683 present unless the new PKCS7_NO_CRL flag is asserted.
2686 *) Extend ASN1 oid configuration module. It now additionally accepts the
2689 shortName = some long name, 1.2.3.4
2692 *) Reimplemented the BN_CTX implementation. There is now no more static
2693 limitation on the number of variables it can handle nor the depth of the
2694 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2695 information can now expand as required, and rather than having a single
2696 static array of bignums, BN_CTX now uses a linked-list of such arrays
2697 allowing it to expand on demand whilst maintaining the usefulness of
2698 BN_CTX's "bundling".
2701 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2702 to allow all RSA operations to function using a single BN_CTX.
2705 *) Preliminary support for certificate policy evaluation and checking. This
2706 is initially intended to pass the tests outlined in "Conformance Testing
2707 of Relying Party Client Certificate Path Processing Logic" v1.07.
2710 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2711 remained unused and not that useful. A variety of other little bignum
2712 tweaks and fixes have also been made continuing on from the audit (see
2716 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2717 associated ASN1, EVP and SSL functions and old ASN1 macros.
2720 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2721 and this should never fail. So the return value from the use of
2722 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2723 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2726 *) BN_CTX_get() should return zero-valued bignums, providing the same
2727 initialised value as BN_new().
2728 [Geoff Thorpe, suggested by Ulf Möller]
2730 *) Support for inhibitAnyPolicy certificate extension.
2733 *) An audit of the BIGNUM code is underway, for which debugging code is
2734 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2735 is considered valid when processing BIGNUMs, and causes execution to
2736 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2737 further steps are taken to deliberately pollute unused data in BIGNUM
2738 structures to try and expose faulty code further on. For now, openssl will
2739 (in its default mode of operation) continue to tolerate the inconsistent
2740 forms that it has tolerated in the past, but authors and packagers should
2741 consider trying openssl and their own applications when compiled with
2742 these debugging symbols defined. It will help highlight potential bugs in
2743 their own code, and will improve the test coverage for OpenSSL itself. At
2744 some point, these tighter rules will become openssl's default to improve
2745 maintainability, though the assert()s and other overheads will remain only
2746 in debugging configurations. See bn.h for more details.
2747 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2749 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2750 that can only be obtained through BN_CTX_new() (which implicitly
2751 initialises it). The presence of this function only made it possible
2752 to overwrite an existing structure (and cause memory leaks).
2755 *) Because of the callback-based approach for implementing LHASH as a
2756 template type, lh_insert() adds opaque objects to hash-tables and
2757 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2758 to clean up those corresponding objects before destroying the hash table
2759 (and losing the object pointers). So some over-zealous constifications in
2760 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2761 objects as "const" and the lh_doall[_arg] callback wrappers are not
2762 prototyped to have "const" restrictions on the object pointers they are
2763 given (and so aren't required to cast them away any more).
2766 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2767 (speed) prefers to use its own implementation. The two implementations
2768 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2769 its object type properly exposed (MS_TM) instead of casting to/from "char
2770 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2771 aren't necessarily the greatest nomenclatures - but this is what was used
2772 internally to the implementation so I've used that for now.
2775 *) Ensure that deprecated functions do not get compiled when
2776 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2777 the self-tests were still using deprecated key-generation functions so
2778 these have been updated also.
2781 *) Reorganise PKCS#7 code to separate the digest location functionality
2782 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2783 New function PKCS7_set_digest() to set the digest type for PKCS#7
2784 digestedData type. Add additional code to correctly generate the
2785 digestedData type and add support for this type in PKCS7 initialization
2789 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2790 structure of type "other".
2793 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2794 sure the loop does correctly stop and breaking ("division by zero")
2795 modulus operations are not performed. The (pre-generated) prime
2796 table crypto/bn/bn_prime.h was already correct, but it could not be
2797 re-generated on some platforms because of the "division by zero"
2798 situation in the script.
2799 [Ralf S. Engelschall]
2801 *) Update support for ECC-based TLS ciphersuites according to
2802 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2803 SHA-1 now is only used for "small" curves (where the
2804 representation of a field element takes up to 24 bytes); for
2805 larger curves, the field element resulting from ECDH is directly
2806 used as premaster secret.
2807 [Douglas Stebila (Sun Microsystems Laboratories)]
2809 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2810 curve secp160r1 to the tests.
2811 [Douglas Stebila (Sun Microsystems Laboratories)]
2813 *) Add the possibility to load symbols globally with DSO.
2814 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2816 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2817 control of the error stack.
2820 *) Add support for STORE in ENGINE.
2823 *) Add the STORE type. The intention is to provide a common interface
2824 to certificate and key stores, be they simple file-based stores, or
2825 HSM-type store, or LDAP stores, or...
2826 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2829 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2830 pass a list of arguments to any function as well as provide a way
2831 for a function to pass data back to the caller.
2834 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2835 works like BUF_strdup() but can be used to duplicate a portion of
2836 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2840 *) Add the function sk_find_ex() which works like sk_find(), but will
2841 return an index to an element even if an exact match couldn't be
2842 found. The index is guaranteed to point at the element where the
2843 searched-for key would be inserted to preserve sorting order.
2846 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2847 takes an extra flags argument for optional functionality. Currently,
2848 the following flags are defined:
2850 OBJ_BSEARCH_VALUE_ON_NOMATCH
2851 This one gets OBJ_bsearch_ex() to return a pointer to the first
2852 element where the comparing function returns a negative or zero
2855 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2856 This one gets OBJ_bsearch_ex() to return a pointer to the first
2857 element where the comparing function returns zero. This is useful
2858 if there are more than one element where the comparing function
2862 *) Make it possible to create self-signed certificates with 'openssl ca'
2863 in such a way that the self-signed certificate becomes part of the
2864 CA database and uses the same mechanisms for serial number generation
2865 as all other certificate signing. The new flag '-selfsign' enables
2866 this functionality. Adapt CA.sh and CA.pl.in.
2869 *) Add functionality to check the public key of a certificate request
2870 against a given private. This is useful to check that a certificate
2871 request can be signed by that key (self-signing).
2874 *) Make it possible to have multiple active certificates with the same
2875 subject in the CA index file. This is done only if the keyword
2876 'unique_subject' is set to 'no' in the main CA section (default
2877 if 'CA_default') of the configuration file. The value is saved
2878 with the database itself in a separate index attribute file,
2879 named like the index file with '.attr' appended to the name.
2882 *) Generate muti valued AVAs using '+' notation in config files for
2886 *) Support for nameConstraints certificate extension.
2889 *) Support for policyConstraints certificate extension.
2892 *) Support for policyMappings certificate extension.
2895 *) Make sure the default DSA_METHOD implementation only uses its
2896 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2897 and change its own handlers to be NULL so as to remove unnecessary
2898 indirection. This lets alternative implementations fallback to the
2899 default implementation more easily.
2902 *) Support for directoryName in GeneralName related extensions
2906 *) Make it possible to link applications using Makefile.shared.
2907 Make that possible even when linking against static libraries!
2910 *) Support for single pass processing for S/MIME signing. This now
2911 means that S/MIME signing can be done from a pipe, in addition
2912 cleartext signing (multipart/signed type) is effectively streaming
2913 and the signed data does not need to be all held in memory.
2915 This is done with a new flag PKCS7_STREAM. When this flag is set
2916 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2917 is done after the data is output (and digests calculated) in
2918 SMIME_write_PKCS7().
2921 *) Add full support for -rpath/-R, both in shared libraries and
2922 applications, at least on the platforms where it's known how
2926 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2927 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2928 will now compute a table of multiples of the generator that
2929 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2930 faster (notably in the case of a single point multiplication,
2931 scalar * generator).
2932 [Nils Larsch, Bodo Moeller]
2934 *) IPv6 support for certificate extensions. The various extensions
2935 which use the IP:a.b.c.d can now take IPv6 addresses using the
2936 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2940 *) Added an ENGINE that implements RSA by performing private key
2941 exponentiations with the GMP library. The conversions to and from
2942 GMP's mpz_t format aren't optimised nor are any montgomery forms
2943 cached, and on x86 it appears OpenSSL's own performance has caught up.
2944 However there are likely to be other architectures where GMP could
2945 provide a boost. This ENGINE is not built in by default, but it can be
2946 specified at Configure time and should be accompanied by the necessary
2947 linker additions, eg;
2948 ./config -DOPENSSL_USE_GMP -lgmp
2951 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2952 testing availability of engines with "-t" - the old behaviour is
2953 produced by increasing the feature's verbosity with "-tt".
2956 *) ECDSA routines: under certain error conditions uninitialized BN objects
2957 could be freed. Solution: make sure initialization is performed early
2958 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2962 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2963 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2964 software implementations. For DSA and DH, parameter generation can
2965 also be overriden by providing the appropriate method callbacks.
2968 *) Change the "progress" mechanism used in key-generation and
2969 primality testing to functions that take a new BN_GENCB pointer in
2970 place of callback/argument pairs. The new API functions have "_ex"
2971 postfixes and the older functions are reimplemented as wrappers for
2972 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2973 declarations of the old functions to help (graceful) attempts to
2974 migrate to the new functions. Also, the new key-generation API
2975 functions operate on a caller-supplied key-structure and return
2976 success/failure rather than returning a key or NULL - this is to
2977 help make "keygen" another member function of RSA_METHOD etc.
2979 Example for using the new callback interface:
2981 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2985 BN_GENCB_set(&my_cb, my_callback, my_arg);
2987 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2988 /* For the meaning of a, b in calls to my_callback(), see the
2989 * documentation of the function that calls the callback.
2990 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2991 * my_callback should return 1 if it wants BN_is_prime_ex()
2992 * to continue, or 0 to stop.
2997 *) Change the ZLIB compression method to be stateful, and make it
2998 available to TLS with the number defined in
2999 draft-ietf-tls-compression-04.txt.
3002 *) Add the ASN.1 structures and functions for CertificatePair, which
3003 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
3005 CertificatePair ::= SEQUENCE {
3006 forward [0] Certificate OPTIONAL,
3007 reverse [1] Certificate OPTIONAL,
3008 -- at least one of the pair shall be present -- }
3010 Also implement the PEM functions to read and write certificate
3011 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
3013 This needed to be defined, mostly for the sake of the LDAP
3014 attribute crossCertificatePair, but may prove useful elsewhere as
3018 *) Make it possible to inhibit symlinking of shared libraries in
3019 Makefile.shared, for Cygwin's sake.
3022 *) Extend the BIGNUM API by creating a function
3023 void BN_set_negative(BIGNUM *a, int neg);
3024 and a macro that behave like
3025 int BN_is_negative(const BIGNUM *a);
3027 to avoid the need to access 'a->neg' directly in applications.
3030 *) Implement fast modular reduction for pseudo-Mersenne primes
3031 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
3032 EC_GROUP_new_curve_GFp() will now automatically use this
3034 [Nils Larsch <nla@trustcenter.de>]
3036 *) Add new lock type (CRYPTO_LOCK_BN).
3039 *) Change the ENGINE framework to automatically load engines
3040 dynamically from specific directories unless they could be
3041 found to already be built in or loaded. Move all the
3042 current engines except for the cryptodev one to a new
3044 The engines in engines/ are built as shared libraries if
3045 the "shared" options was given to ./Configure or ./config.
3046 Otherwise, they are inserted in libcrypto.a.
3047 /usr/local/ssl/engines is the default directory for dynamic
3048 engines, but that can be overriden at configure time through
3049 the usual use of --prefix and/or --openssldir, and at run
3050 time with the environment variable OPENSSL_ENGINES.
3051 [Geoff Thorpe and Richard Levitte]
3053 *) Add Makefile.shared, a helper makefile to build shared
3054 libraries. Addapt Makefile.org.
3057 *) Add version info to Win32 DLLs.
3058 [Peter 'Luna' Runestig" <peter@runestig.com>]
3060 *) Add new 'medium level' PKCS#12 API. Certificates and keys
3061 can be added using this API to created arbitrary PKCS#12
3062 files while avoiding the low level API.
3064 New options to PKCS12_create(), key or cert can be NULL and
3065 will then be omitted from the output file. The encryption
3066 algorithm NIDs can be set to -1 for no encryption, the mac
3067 iteration count can be set to 0 to omit the mac.
3069 Enhance pkcs12 utility by making the -nokeys and -nocerts
3070 options work when creating a PKCS#12 file. New option -nomac
3071 to omit the mac, NONE can be set for an encryption algorithm.
3072 New code is modified to use the enhanced PKCS12_create()
3073 instead of the low level API.
3076 *) Extend ASN1 encoder to support indefinite length constructed
3077 encoding. This can output sequences tags and octet strings in
3078 this form. Modify pk7_asn1.c to support indefinite length
3079 encoding. This is experimental and needs additional code to
3080 be useful, such as an ASN1 bio and some enhanced streaming
3083 Extend template encode functionality so that tagging is passed
3084 down to the template encoder.
3087 *) Let 'openssl req' fail if an argument to '-newkey' is not
3088 recognized instead of using RSA as a default.
3091 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
3092 As these are not official, they are not included in "ALL";
3093 the "ECCdraft" ciphersuite group alias can be used to select them.
3094 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
3096 *) Add ECDH engine support.
3097 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
3099 *) Add ECDH in new directory crypto/ecdh/.
3100 [Douglas Stebila (Sun Microsystems Laboratories)]
3102 *) Let BN_rand_range() abort with an error after 100 iterations
3103 without success (which indicates a broken PRNG).
3106 *) Change BN_mod_sqrt() so that it verifies that the input value
3107 is really the square of the return value. (Previously,
3108 BN_mod_sqrt would show GIGO behaviour.)
3111 *) Add named elliptic curves over binary fields from X9.62, SECG,
3112 and WAP/WTLS; add OIDs that were still missing.
3114 [Sheueling Chang Shantz and Douglas Stebila
3115 (Sun Microsystems Laboratories)]
3117 *) Extend the EC library for elliptic curves over binary fields
3118 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
3121 EC_GF2m_simple_method
3125 EC_GROUP_new_curve_GF2m
3126 EC_GROUP_set_curve_GF2m
3127 EC_GROUP_get_curve_GF2m
3128 EC_POINT_set_affine_coordinates_GF2m
3129 EC_POINT_get_affine_coordinates_GF2m
3130 EC_POINT_set_compressed_coordinates_GF2m
3132 Point compression for binary fields is disabled by default for
3133 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
3136 As binary polynomials are represented as BIGNUMs, various members
3137 of the EC_GROUP and EC_POINT data structures can be shared
3138 between the implementations for prime fields and binary fields;
3139 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
3140 are essentially identical to their ..._GFp counterparts.
3141 (For simplicity, the '..._GFp' prefix has been dropped from
3142 various internal method names.)
3144 An internal 'field_div' method (similar to 'field_mul' and
3145 'field_sqr') has been added; this is used only for binary fields.
3147 [Sheueling Chang Shantz and Douglas Stebila
3148 (Sun Microsystems Laboratories)]
3150 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
3151 through methods ('mul', 'precompute_mult').
3153 The generic implementations (now internally called 'ec_wNAF_mul'
3154 and 'ec_wNAF_precomputed_mult') remain the default if these
3155 methods are undefined.
3157 [Sheueling Chang Shantz and Douglas Stebila
3158 (Sun Microsystems Laboratories)]
3160 *) New function EC_GROUP_get_degree, which is defined through
3161 EC_METHOD. For curves over prime fields, this returns the bit
3162 length of the modulus.
3164 [Sheueling Chang Shantz and Douglas Stebila
3165 (Sun Microsystems Laboratories)]
3167 *) New functions EC_GROUP_dup, EC_POINT_dup.
3168 (These simply call ..._new and ..._copy).
3170 [Sheueling Chang Shantz and Douglas Stebila
3171 (Sun Microsystems Laboratories)]
3173 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
3174 Polynomials are represented as BIGNUMs (where the sign bit is not
3175 used) in the following functions [macros]:
3178 BN_GF2m_sub [= BN_GF2m_add]
3179 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
3180 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
3181 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
3183 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
3184 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
3185 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
3186 BN_GF2m_cmp [= BN_ucmp]
3188 (Note that only the 'mod' functions are actually for fields GF(2^m).
3189 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
3191 For some functions, an the irreducible polynomial defining a
3192 field can be given as an 'unsigned int[]' with strictly
3193 decreasing elements giving the indices of those bits that are set;
3194 i.e., p[] represents the polynomial
3195 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
3197 p[0] > p[1] > ... > p[k] = 0.
3198 This applies to the following functions:
3203 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
3204 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
3206 BN_GF2m_mod_sqrt_arr
3207 BN_GF2m_mod_solve_quad_arr
3211 Conversion can be performed by the following functions:
3216 bntest.c has additional tests for binary polynomial arithmetic.
3218 Two implementations for BN_GF2m_mod_div() are available.
3219 The default algorithm simply uses BN_GF2m_mod_inv() and
3220 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
3221 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
3222 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
3224 [Sheueling Chang Shantz and Douglas Stebila
3225 (Sun Microsystems Laboratories)]
3227 *) Add new error code 'ERR_R_DISABLED' that can be used when some
3228 functionality is disabled at compile-time.
3229 [Douglas Stebila <douglas.stebila@sun.com>]
3231 *) Change default behaviour of 'openssl asn1parse' so that more
3232 information is visible when viewing, e.g., a certificate:
3234 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
3235 mode the content of non-printable OCTET STRINGs is output in a
3236 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
3237 avoid the appearance of a printable string.
3238 [Nils Larsch <nla@trustcenter.de>]
3240 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
3242 EC_GROUP_set_asn1_flag()
3243 EC_GROUP_get_asn1_flag()
3244 EC_GROUP_set_point_conversion_form()
3245 EC_GROUP_get_point_conversion_form()
3246 These control ASN1 encoding details:
3247 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
3248 has been set to OPENSSL_EC_NAMED_CURVE.
3249 - Points are encoded in uncompressed form by default; options for
3250 asn1_for are as for point2oct, namely
3251 POINT_CONVERSION_COMPRESSED
3252 POINT_CONVERSION_UNCOMPRESSED
3253 POINT_CONVERSION_HYBRID
3255 Also add 'seed' and 'seed_len' members to EC_GROUP with access
3258 EC_GROUP_get0_seed()
3259 EC_GROUP_get_seed_len()
3260 This is used only for ASN1 purposes (so far).
3261 [Nils Larsch <nla@trustcenter.de>]
3263 *) Add 'field_type' member to EC_METHOD, which holds the NID
3264 of the appropriate field type OID. The new function
3265 EC_METHOD_get_field_type() returns this value.
3266 [Nils Larsch <nla@trustcenter.de>]
3271 EC_POINT_point2hex()
3272 EC_POINT_hex2point()
3273 providing useful interfaces to EC_POINT_point2oct() and
3274 EC_POINT_oct2point().
3275 [Nils Larsch <nla@trustcenter.de>]
3277 *) Change internals of the EC library so that the functions
3278 EC_GROUP_set_generator()
3279 EC_GROUP_get_generator()
3280 EC_GROUP_get_order()
3281 EC_GROUP_get_cofactor()
3282 are implemented directly in crypto/ec/ec_lib.c and not dispatched
3283 to methods, which would lead to unnecessary code duplication when
3284 adding different types of curves.
3285 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
3287 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
3288 arithmetic, and such that modified wNAFs are generated
3289 (which avoid length expansion in many cases).
3292 *) Add a function EC_GROUP_check_discriminant() (defined via
3293 EC_METHOD) that verifies that the curve discriminant is non-zero.
3295 Add a function EC_GROUP_check() that makes some sanity tests
3296 on a EC_GROUP, its generator and order. This includes
3297 EC_GROUP_check_discriminant().
3298 [Nils Larsch <nla@trustcenter.de>]
3300 *) Add ECDSA in new directory crypto/ecdsa/.
3302 Add applications 'openssl ecparam' and 'openssl ecdsa'
3303 (these are based on 'openssl dsaparam' and 'openssl dsa').
3305 ECDSA support is also included in various other files across the
3306 library. Most notably,
3307 - 'openssl req' now has a '-newkey ecdsa:file' option;
3308 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
3309 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
3310 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
3311 them suitable for ECDSA where domain parameters must be
3312 extracted before the specific public key;
3313 - ECDSA engine support has been added.
3314 [Nils Larsch <nla@trustcenter.de>]
3316 *) Include some named elliptic curves, and add OIDs from X9.62,
3317 SECG, and WAP/WTLS. Each curve can be obtained from the new
3319 EC_GROUP_new_by_curve_name(),
3320 and the list of available named curves can be obtained with
3321 EC_get_builtin_curves().
3322 Also add a 'curve_name' member to EC_GROUP objects, which can be
3324 EC_GROUP_set_curve_name()
3325 EC_GROUP_get_curve_name()
3326 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
3328 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3329 was actually never needed) and in BN_mul(). The removal in BN_mul()
3330 required a small change in bn_mul_part_recursive() and the addition
3331 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3332 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3333 bn_sub_words() and bn_add_words() except they take arrays with
3337 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
3339 *) Cleanse PEM buffers before freeing them since they may contain
3341 [Benjamin Bennett <ben@psc.edu>]
3343 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
3344 a ciphersuite string such as "DEFAULT:RSA" cannot enable
3345 authentication-only ciphersuites.
3348 *) Since AES128 and AES256 share a single mask bit in the logic of
3349 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
3350 kludge to work properly if AES128 is available and AES256 isn't.
3353 *) Expand security boundary to match 1.1.1 module.
3356 *) Remove redundant features: hash file source, editing of test vectors
3357 modify fipsld to use external fips_premain.c signature.
3360 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
3361 run algorithm test programs.
3364 *) Make algorithm test programs more tolerant of whitespace.
3367 *) Have SSL/TLS server implementation tolerate "mismatched" record
3368 protocol version while receiving ClientHello even if the
3369 ClientHello is fragmented. (The server can't insist on the
3370 particular protocol version it has chosen before the ServerHello
3371 message has informed the client about his choice.)
3374 *) Load error codes if they are not already present instead of using a
3375 static variable. This allows them to be cleanly unloaded and reloaded.
3378 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
3380 *) Introduce limits to prevent malicious keys being able to
3381 cause a denial of service. (CVE-2006-2940)
3382 [Steve Henson, Bodo Moeller]
3384 *) Fix ASN.1 parsing of certain invalid structures that can result
3385 in a denial of service. (CVE-2006-2937) [Steve Henson]
3387 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
3388 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
3390 *) Fix SSL client code which could crash if connecting to a
3391 malicious SSLv2 server. (CVE-2006-4343)
3392 [Tavis Ormandy and Will Drewry, Google Security Team]
3394 *) Change ciphersuite string processing so that an explicit
3395 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
3396 will no longer include "AES128-SHA"), and any other similar
3397 ciphersuite (same bitmap) from *other* protocol versions (so that
3398 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
3399 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
3400 changes from 0.9.8b and 0.9.8d.
3403 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
3405 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
3406 (CVE-2006-4339) [Ben Laurie and Google Security Team]
3408 *) Change the Unix randomness entropy gathering to use poll() when
3409 possible instead of select(), since the latter has some
3410 undesirable limitations.
3411 [Darryl Miles via Richard Levitte and Bodo Moeller]
3413 *) Disable rogue ciphersuites:
3415 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
3416 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
3417 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
3419 The latter two were purportedly from
3420 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
3423 Also deactive the remaining ciphersuites from
3424 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
3425 unofficial, and the ID has long expired.
3428 *) Fix RSA blinding Heisenbug (problems sometimes occured on
3429 dual-core machines) and other potential thread-safety issues.
3432 Changes between 0.9.7i and 0.9.7j [04 May 2006]
3434 *) Adapt fipsld and the build system to link against the validated FIPS
3435 module in FIPS mode.
3438 *) Fixes for VC++ 2005 build under Windows.
3441 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
3442 from a Windows bash shell such as MSYS. It is autodetected from the
3443 "config" script when run from a VC++ environment. Modify standard VC++
3444 build to use fipscanister.o from the GNU make build.
3447 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
3449 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
3450 The value now differs depending on if you build for FIPS or not.
3451 BEWARE! A program linked with a shared FIPSed libcrypto can't be
3452 safely run with a non-FIPSed libcrypto, as it may crash because of
3453 the difference induced by this change.
3456 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
3458 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
3459 (part of SSL_OP_ALL). This option used to disable the
3460 countermeasure against man-in-the-middle protocol-version
3461 rollback in the SSL 2.0 server implementation, which is a bad
3462 idea. (CVE-2005-2969)
3464 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
3465 for Information Security, National Institute of Advanced Industrial
3466 Science and Technology [AIST], Japan)]
3468 *) Minimal support for X9.31 signatures and PSS padding modes. This is
3469 mainly for FIPS compliance and not fully integrated at this stage.
3472 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
3473 the exponentiation using a fixed-length exponent. (Otherwise,
3474 the information leaked through timing could expose the secret key
3475 after many signatures; cf. Bleichenbacher's attack on DSA with
3479 *) Make a new fixed-window mod_exp implementation the default for
3480 RSA, DSA, and DH private-key operations so that the sequence of
3481 squares and multiplies and the memory access pattern are
3482 independent of the particular secret key. This will mitigate
3483 cache-timing and potential related attacks.
3485 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
3486 and this is automatically used by BN_mod_exp_mont() if the new flag
3487 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
3488 will use this BN flag for private exponents unless the flag
3489 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
3490 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
3492 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3494 *) Change the client implementation for SSLv23_method() and
3495 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3496 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3497 (Previously, the SSL 2.0 backwards compatible Client Hello
3498 message format would be used even with SSL_OP_NO_SSLv2.)
3501 *) Add support for smime-type MIME parameter in S/MIME messages which some
3505 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3506 a threadsafe manner. Modify rsa code to use new function and add calls
3507 to dsa and dh code (which had race conditions before).
3510 *) Include the fixed error library code in the C error file definitions
3511 instead of fixing them up at runtime. This keeps the error code
3512 structures constant.
3515 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3517 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3520 *) Fixes for newer kerberos headers. NB: the casts are needed because
3521 the 'length' field is signed on one version and unsigned on another
3522 with no (?) obvious way to tell the difference, without these VC++
3523 complains. Also the "definition" of FAR (blank) is no longer included
3524 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3525 some needed definitions.
3528 *) Undo Cygwin change.
3531 *) Added support for proxy certificates according to RFC 3820.
3532 Because they may be a security thread to unaware applications,
3533 they must be explicitely allowed in run-time. See
3534 docs/HOWTO/proxy_certificates.txt for further information.
3537 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3539 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3540 server and client random values. Previously
3541 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3542 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3544 This change has negligible security impact because:
3546 1. Server and client random values still have 24 bytes of pseudo random
3549 2. Server and client random values are sent in the clear in the initial
3552 3. The master secret is derived using the premaster secret (48 bytes in
3553 size for static RSA ciphersuites) as well as client server and random
3556 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3559 [Stephen Henson, reported by UK NISCC]
3561 *) Use Windows randomness collection on Cygwin.
3564 *) Fix hang in EGD/PRNGD query when communication socket is closed
3565 prematurely by EGD/PRNGD.
3566 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3568 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3571 *) Back-port of selected performance improvements from development
3572 branch, as well as improved support for PowerPC platforms.
3575 *) Add lots of checks for memory allocation failure, error codes to indicate
3576 failure and freeing up memory if a failure occurs.
3577 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3579 *) Add new -passin argument to dgst.
3582 *) Perform some character comparisons of different types in X509_NAME_cmp:
3583 this is needed for some certificates that reencode DNs into UTF8Strings
3584 (in violation of RFC3280) and can't or wont issue name rollover
3588 *) Make an explicit check during certificate validation to see that
3589 the CA setting in each certificate on the chain is correct. As a
3590 side effect always do the following basic checks on extensions,
3591 not just when there's an associated purpose to the check:
3593 - if there is an unhandled critical extension (unless the user
3594 has chosen to ignore this fault)
3595 - if the path length has been exceeded (if one is set at all)
3596 - that certain extensions fit the associated purpose (if one has
3600 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3602 *) Avoid a race condition when CRLs are checked in a multi threaded
3603 environment. This would happen due to the reordering of the revoked
3604 entries during signature checking and serial number lookup. Now the
3605 encoding is cached and the serial number sort performed under a lock.
3606 Add new STACK function sk_is_sorted().
3609 *) Add Delta CRL to the extension code.
3612 *) Various fixes to s3_pkt.c so alerts are sent properly.
3613 [David Holmes <d.holmes@f5.com>]
3615 *) Reduce the chances of duplicate issuer name and serial numbers (in
3616 violation of RFC3280) using the OpenSSL certificate creation utilities.
3617 This is done by creating a random 64 bit value for the initial serial
3618 number when a serial number file is created or when a self signed
3619 certificate is created using 'openssl req -x509'. The initial serial
3620 number file is created using 'openssl x509 -next_serial' in CA.pl
3621 rather than being initialized to 1.
3624 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3626 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3627 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3628 [Joe Orton, Steve Henson]
3630 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3632 [Joe Orton, Steve Henson]
3634 *) Make it possible to have multiple active certificates with the same
3635 subject in the CA index file. This is done only if the keyword
3636 'unique_subject' is set to 'no' in the main CA section (default
3637 if 'CA_default') of the configuration file. The value is saved
3638 with the database itself in a separate index attribute file,
3639 named like the index file with '.attr' appended to the name.
3642 *) X509 verify fixes. Disable broken certificate workarounds when
3643 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3644 keyUsage extension present. Don't accept CRLs with unhandled critical
3645 extensions: since verify currently doesn't process CRL extensions this
3646 rejects a CRL with *any* critical extensions. Add new verify error codes
3650 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3651 A clarification of RFC2560 will require the use of OCTET STRINGs and
3652 some implementations cannot handle the current raw format. Since OpenSSL
3653 copies and compares OCSP nonces as opaque blobs without any attempt at
3654 parsing them this should not create any compatibility issues.
3657 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3658 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3659 this HMAC (and other) operations are several times slower than OpenSSL
3663 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3664 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3666 *) Use the correct content when signing type "other".
3669 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3671 *) Fix various bugs revealed by running the NISCC test suite:
3673 Stop out of bounds reads in the ASN1 code when presented with
3674 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3676 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3678 If verify callback ignores invalid public key errors don't try to check
3679 certificate signature with the NULL public key.
3683 *) New -ignore_err option in ocsp application to stop the server
3684 exiting on the first error in a request.
3687 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3688 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3692 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3693 extra data after the compression methods not only for TLS 1.0
3694 but also for SSL 3.0 (as required by the specification).
3695 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3697 *) Change X509_certificate_type() to mark the key as exported/exportable
3698 when it's 512 *bits* long, not 512 bytes.
3701 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3702 blocks during encryption.
3705 *) Various fixes to base64 BIO and non blocking I/O. On write
3706 flushes were not handled properly if the BIO retried. On read
3707 data was not being buffered properly and had various logic bugs.
3708 This also affects blocking I/O when the data being decoded is a
3712 *) Various S/MIME bugfixes and compatibility changes:
3713 output correct application/pkcs7 MIME type if
3714 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3715 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3716 of files as .eml work). Correctly handle very long lines in MIME
3720 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3722 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3723 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3724 a protocol version number mismatch like a decryption error
3725 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3728 *) Turn on RSA blinding by default in the default implementation
3729 to avoid a timing attack. Applications that don't want it can call
3730 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3731 They would be ill-advised to do so in most cases.
3732 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3734 *) Change RSA blinding code so that it works when the PRNG is not
3735 seeded (in this case, the secret RSA exponent is abused as
3736 an unpredictable seed -- if it is not unpredictable, there
3737 is no point in blinding anyway). Make RSA blinding thread-safe
3738 by remembering the creator's thread ID in rsa->blinding and
3739 having all other threads use local one-time blinding factors
3740 (this requires more computation than sharing rsa->blinding, but
3741 avoids excessive locking; and if an RSA object is not shared
3742 between threads, blinding will still be very fast).
3745 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3746 ENGINE as defaults for all supported algorithms irrespective of
3747 the 'flags' parameter. 'flags' is now honoured, so applications
3748 should make sure they are passing it correctly.
3751 *) Target "mingw" now allows native Windows code to be generated in
3752 the Cygwin environment as well as with the MinGW compiler.
3755 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3757 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3758 via timing by performing a MAC computation even if incorrrect
3759 block cipher padding has been found. This is a countermeasure
3760 against active attacks where the attacker has to distinguish
3761 between bad padding and a MAC verification error. (CVE-2003-0078)
3763 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3764 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3765 Martin Vuagnoux (EPFL, Ilion)]
3767 *) Make the no-err option work as intended. The intention with no-err
3768 is not to have the whole error stack handling routines removed from
3769 libcrypto, it's only intended to remove all the function name and
3770 reason texts, thereby removing some of the footprint that may not
3771 be interesting if those errors aren't displayed anyway.
3773 NOTE: it's still possible for any application or module to have it's
3774 own set of error texts inserted. The routines are there, just not
3775 used by default when no-err is given.
3778 *) Add support for FreeBSD on IA64.
3779 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3781 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3782 Kerberos function mit_des_cbc_cksum(). Before this change,
3783 the value returned by DES_cbc_cksum() was like the one from
3784 mit_des_cbc_cksum(), except the bytes were swapped.
3785 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3787 *) Allow an application to disable the automatic SSL chain building.
3788 Before this a rather primitive chain build was always performed in
3789 ssl3_output_cert_chain(): an application had no way to send the
3790 correct chain if the automatic operation produced an incorrect result.
3792 Now the chain builder is disabled if either:
3794 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3796 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3798 The reasoning behind this is that an application would not want the
3799 auto chain building to take place if extra chain certificates are
3800 present and it might also want a means of sending no additional
3801 certificates (for example the chain has two certificates and the
3805 *) Add the possibility to build without the ENGINE framework.
3806 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3808 *) Under Win32 gmtime() can return NULL: check return value in
3809 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3812 *) DSA routines: under certain error conditions uninitialized BN objects
3813 could be freed. Solution: make sure initialization is performed early
3814 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3815 Nils Larsch <nla@trustcenter.de> via PR#459)
3818 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3819 checked on reconnect on the client side, therefore session resumption
3820 could still fail with a "ssl session id is different" error. This
3821 behaviour is masked when SSL_OP_ALL is used due to
3822 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3823 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3824 followup to PR #377.
3827 *) IA-32 assembler support enhancements: unified ELF targets, support
3828 for SCO/Caldera platforms, fix for Cygwin shared build.
3831 *) Add support for FreeBSD on sparc64. As a consequence, support for
3832 FreeBSD on non-x86 processors is separate from x86 processors on
3833 the config script, much like the NetBSD support.
3834 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3836 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3838 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3841 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3842 code (06) was taken as the first octet of the session ID and the last
3843 octet was ignored consequently. As a result SSLv2 client side session
3844 caching could not have worked due to the session ID mismatch between
3846 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3850 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3851 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3855 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3856 seems that in spite of existing for more than a year, many application
3857 author have done nothing to provide the necessary callbacks, which
3858 means that this particular engine will not work properly anywhere.
3859 This is a very unfortunate situation which forces us, in the name
3860 of usability, to give the hw_ncipher.c a static lock, which is part
3862 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3863 appear in 0.9.8 or later. We EXPECT application authors to have
3864 dealt properly with this when 0.9.8 is released (unless we actually
3865 make such changes in the libcrypto locking code that changes will
3866 have to be made anyway).
3869 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3870 octets have been read, EOF or an error occurs. Without this change
3871 some truncated ASN1 structures will not produce an error.
3874 *) Disable Heimdal support, since it hasn't been fully implemented.
3875 Still give the possibility to force the use of Heimdal, but with
3876 warnings and a request that patches get sent to openssl-dev.
3879 *) Add the VC-CE target, introduce the WINCE sysname, and add
3880 INSTALL.WCE and appropriate conditionals to make it build.
3881 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3883 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3884 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3885 edit numbers of the version.
3886 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3888 *) Introduce safe string copy and catenation functions
3889 (BUF_strlcpy() and BUF_strlcat()).
3890 [Ben Laurie (CHATS) and Richard Levitte]
3892 *) Avoid using fixed-size buffers for one-line DNs.
3893 [Ben Laurie (CHATS)]
3895 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3896 resizing buffers containing secrets, and use where appropriate.
3897 [Ben Laurie (CHATS)]
3899 *) Avoid using fixed size buffers for configuration file location.
3900 [Ben Laurie (CHATS)]
3902 *) Avoid filename truncation for various CA files.
3903 [Ben Laurie (CHATS)]
3905 *) Use sizeof in preference to magic numbers.
3906 [Ben Laurie (CHATS)]
3908 *) Avoid filename truncation in cert requests.
3909 [Ben Laurie (CHATS)]
3911 *) Add assertions to check for (supposedly impossible) buffer
3913 [Ben Laurie (CHATS)]
3915 *) Don't cache truncated DNS entries in the local cache (this could
3916 potentially lead to a spoofing attack).
3917 [Ben Laurie (CHATS)]
3919 *) Fix various buffers to be large enough for hex/decimal
3920 representations in a platform independent manner.
3921 [Ben Laurie (CHATS)]
3923 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3924 resizing buffers containing secrets, and use where appropriate.
3925 [Ben Laurie (CHATS)]
3927 *) Add BIO_indent() to avoid much slightly worrying code to do
3929 [Ben Laurie (CHATS)]
3931 *) Convert sprintf()/BIO_puts() to BIO_printf().
3932 [Ben Laurie (CHATS)]
3934 *) buffer_gets() could terminate with the buffer only half
3936 [Ben Laurie (CHATS)]
3938 *) Add assertions to prevent user-supplied crypto functions from
3939 overflowing internal buffers by having large block sizes, etc.
3940 [Ben Laurie (CHATS)]
3942 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3944 [Ben Laurie (CHATS)]
3946 *) Eliminate unused copy of key in RC4.
3947 [Ben Laurie (CHATS)]
3949 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3950 [Ben Laurie (CHATS)]
3952 *) Fix off-by-one error in EGD path.
3953 [Ben Laurie (CHATS)]
3955 *) If RANDFILE path is too long, ignore instead of truncating.
3956 [Ben Laurie (CHATS)]
3958 *) Eliminate unused and incorrectly sized X.509 structure
3960 [Ben Laurie (CHATS)]
3962 *) Eliminate unused and dangerous function knumber().
3963 [Ben Laurie (CHATS)]
3965 *) Eliminate unused and dangerous structure, KSSL_ERR.
3966 [Ben Laurie (CHATS)]
3968 *) Protect against overlong session ID context length in an encoded
3969 session object. Since these are local, this does not appear to be
3971 [Ben Laurie (CHATS)]
3973 *) Change from security patch (see 0.9.6e below) that did not affect
3974 the 0.9.6 release series:
3976 Remote buffer overflow in SSL3 protocol - an attacker could
3977 supply an oversized master key in Kerberos-enabled versions.
3979 [Ben Laurie (CHATS)]
3981 *) Change the SSL kerb5 codes to match RFC 2712.
3984 *) Make -nameopt work fully for req and add -reqopt switch.
3985 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3987 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3988 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3990 *) Make sure tests can be performed even if the corresponding algorithms
3991 have been removed entirely. This was also the last step to make
3992 OpenSSL compilable with DJGPP under all reasonable conditions.
3993 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3995 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3996 to allow version independent disabling of normally unselected ciphers,
3997 which may be activated as a side-effect of selecting a single cipher.
3999 (E.g., cipher list string "RSA" enables ciphersuites that are left
4000 out of "ALL" because they do not provide symmetric encryption.
4001 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
4002 [Lutz Jaenicke, Bodo Moeller]
4004 *) Add appropriate support for separate platform-dependent build
4005 directories. The recommended way to make a platform-dependent
4006 build directory is the following (tested on Linux), maybe with
4009 # Place yourself outside of the OpenSSL source tree. In
4010 # this example, the environment variable OPENSSL_SOURCE
4011 # is assumed to contain the absolute OpenSSL source directory.
4012 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
4013 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
4014 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
4015 mkdir -p `dirname $F`
4016 ln -s $OPENSSL_SOURCE/$F $F
4019 To be absolutely sure not to disturb the source tree, a "make clean"
4020 is a good thing. If it isn't successfull, don't worry about it,
4021 it probably means the source directory is very clean.
4024 *) Make sure any ENGINE control commands make local copies of string
4025 pointers passed to them whenever necessary. Otherwise it is possible
4026 the caller may have overwritten (or deallocated) the original string
4027 data when a later ENGINE operation tries to use the stored values.
4028 [Götz Babin-Ebell <babinebell@trustcenter.de>]
4030 *) Improve diagnostics in file reading and command-line digests.
4031 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
4033 *) Add AES modes CFB and OFB to the object database. Correct an
4034 error in AES-CFB decryption.
4037 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
4038 allows existing EVP_CIPHER_CTX structures to be reused after
4039 calling EVP_*Final(). This behaviour is used by encryption
4040 BIOs and some applications. This has the side effect that
4041 applications must explicitly clean up cipher contexts with
4042 EVP_CIPHER_CTX_cleanup() or they will leak memory.
4045 *) Check the values of dna and dnb in bn_mul_recursive before calling
4046 bn_mul_comba (a non zero value means the a or b arrays do not contain
4047 n2 elements) and fallback to bn_mul_normal if either is not zero.
4050 *) Fix escaping of non-ASCII characters when using the -subj option
4051 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
4054 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
4055 form for "surname", serialNumber has no short form.
4056 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
4057 therefore remove "mail" short name for "internet 7".
4058 The OID for unique identifiers in X509 certificates is
4059 x500UniqueIdentifier, not uniqueIdentifier.
4060 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
4063 *) Add an "init" command to the ENGINE config module and auto initialize
4064 ENGINEs. Without any "init" command the ENGINE will be initialized
4065 after all ctrl commands have been executed on it. If init=1 the
4066 ENGINE is initailized at that point (ctrls before that point are run
4067 on the uninitialized ENGINE and after on the initialized one). If
4068 init=0 then the ENGINE will not be iniatialized at all.
4071 *) Fix the 'app_verify_callback' interface so that the user-defined
4072 argument is actually passed to the callback: In the
4073 SSL_CTX_set_cert_verify_callback() prototype, the callback
4074 declaration has been changed from
4077 int (*cb)(X509_STORE_CTX *,void *);
4078 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
4079 i=s->ctx->app_verify_callback(&ctx)
4080 has been changed into
4081 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
4083 To update applications using SSL_CTX_set_cert_verify_callback(),
4084 a dummy argument can be added to their callback functions.
4085 [D. K. Smetters <smetters@parc.xerox.com>]
4087 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
4088 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
4090 *) Add and OPENSSL_LOAD_CONF define which will cause
4091 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
4092 This allows older applications to transparently support certain
4093 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
4094 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
4095 load the config file and OPENSSL_add_all_algorithms_conf() which will
4096 always load it have also been added.
4099 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
4100 Adjust NIDs and EVP layer.
4101 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4103 *) Config modules support in openssl utility.
4105 Most commands now load modules from the config file,
4106 though in a few (such as version) this isn't done
4107 because it couldn't be used for anything.
4109 In the case of ca and req the config file used is
4110 the same as the utility itself: that is the -config
4111 command line option can be used to specify an
4115 *) Move default behaviour from OPENSSL_config(). If appname is NULL
4116 use "openssl_conf" if filename is NULL use default openssl config file.
4119 *) Add an argument to OPENSSL_config() to allow the use of an alternative
4120 config section name. Add a new flag to tolerate a missing config file
4121 and move code to CONF_modules_load_file().
4124 *) Support for crypto accelerator cards from Accelerated Encryption
4125 Processing, www.aep.ie. (Use engine 'aep')
4126 The support was copied from 0.9.6c [engine] and adapted/corrected
4127 to work with the new engine framework.
4128 [AEP Inc. and Richard Levitte]
4130 *) Support for SureWare crypto accelerator cards from Baltimore
4131 Technologies. (Use engine 'sureware')
4132 The support was copied from 0.9.6c [engine] and adapted
4133 to work with the new engine framework.
4136 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
4137 make the newer ENGINE framework commands for the CHIL engine work.
4138 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
4140 *) Make it possible to produce shared libraries on ReliantUNIX.
4141 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
4143 *) Add the configuration target debug-linux-ppro.
4144 Make 'openssl rsa' use the general key loading routines
4145 implemented in apps.c, and make those routines able to
4146 handle the key format FORMAT_NETSCAPE and the variant
4148 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4150 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4151 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4153 *) Add -keyform to rsautl, and document -engine.
4154 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
4156 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
4157 BIO_R_NO_SUCH_FILE error code rather than the generic
4158 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
4161 *) Add new functions
4163 ERR_peek_last_error_line
4164 ERR_peek_last_error_line_data.
4165 These are similar to
4168 ERR_peek_error_line_data,
4169 but report on the latest error recorded rather than the first one
4170 still in the error queue.
4171 [Ben Laurie, Bodo Moeller]
4173 *) default_algorithms option in ENGINE config module. This allows things
4175 default_algorithms = ALL
4176 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
4179 *) Prelminary ENGINE config module.
4182 *) New experimental application configuration code.
4185 *) Change the AES code to follow the same name structure as all other
4186 symmetric ciphers, and behave the same way. Move everything to
4187 the directory crypto/aes, thereby obsoleting crypto/rijndael.
4188 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
4190 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
4191 [Ben Laurie and Theo de Raadt]
4193 *) Add option to output public keys in req command.
4194 [Massimiliano Pala madwolf@openca.org]
4196 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
4197 (up to about 10% better than before for P-192 and P-224).
4200 *) New functions/macros
4202 SSL_CTX_set_msg_callback(ctx, cb)
4203 SSL_CTX_set_msg_callback_arg(ctx, arg)
4204 SSL_set_msg_callback(ssl, cb)
4205 SSL_set_msg_callback_arg(ssl, arg)
4207 to request calling a callback function
4209 void cb(int write_p, int version, int content_type,
4210 const void *buf, size_t len, SSL *ssl, void *arg)
4212 whenever a protocol message has been completely received
4213 (write_p == 0) or sent (write_p == 1). Here 'version' is the
4214 protocol version according to which the SSL library interprets
4215 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
4216 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
4217 the content type as defined in the SSL 3.0/TLS 1.0 protocol
4218 specification (change_cipher_spec(20), alert(21), handshake(22)).
4219 'buf' and 'len' point to the actual message, 'ssl' to the
4220 SSL object, and 'arg' is the application-defined value set by
4221 SSL[_CTX]_set_msg_callback_arg().
4223 'openssl s_client' and 'openssl s_server' have new '-msg' options
4224 to enable a callback that displays all protocol messages.
4227 *) Change the shared library support so shared libraries are built as
4228 soon as the corresponding static library is finished, and thereby get
4229 openssl and the test programs linked against the shared library.
4230 This still only happens when the keyword "shard" has been given to
4231 the configuration scripts.
4233 NOTE: shared library support is still an experimental thing, and
4234 backward binary compatibility is still not guaranteed.
4235 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
4237 *) Add support for Subject Information Access extension.
4238 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
4240 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
4241 additional bytes when new memory had to be allocated, not just
4242 when reusing an existing buffer.
4245 *) New command line and configuration option 'utf8' for the req command.
4246 This allows field values to be specified as UTF8 strings.
4249 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
4250 runs for the former and machine-readable output for the latter.
4253 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
4254 of the e-mail address in the DN (i.e., it will go into a certificate
4255 extension only). The new configuration file option 'email_in_dn = no'
4256 has the same effect.
4257 [Massimiliano Pala madwolf@openca.org]
4259 *) Change all functions with names starting with des_ to be starting
4260 with DES_ instead. Add wrappers that are compatible with libdes,
4261 but are named _ossl_old_des_*. Finally, add macros that map the
4262 des_* symbols to the corresponding _ossl_old_des_* if libdes
4263 compatibility is desired. If OpenSSL 0.9.6c compatibility is
4264 desired, the des_* symbols will be mapped to DES_*, with one
4267 Since we provide two compatibility mappings, the user needs to
4268 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
4269 compatibility is desired. The default (i.e., when that macro
4270 isn't defined) is OpenSSL 0.9.6c compatibility.
4272 There are also macros that enable and disable the support of old
4273 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
4274 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
4275 are defined, the default will apply: to support the old des routines.
4277 In either case, one must include openssl/des.h to get the correct
4278 definitions. Do not try to just include openssl/des_old.h, that
4281 NOTE: This is a major break of an old API into a new one. Software
4282 authors are encouraged to switch to the DES_ style functions. Some
4283 time in the future, des_old.h and the libdes compatibility functions
4284 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
4285 default), and then completely removed.
4288 *) Test for certificates which contain unsupported critical extensions.
4289 If such a certificate is found during a verify operation it is
4290 rejected by default: this behaviour can be overridden by either
4291 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
4292 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
4293 X509_supported_extension() has also been added which returns 1 if a
4294 particular extension is supported.
4297 *) Modify the behaviour of EVP cipher functions in similar way to digests
4298 to retain compatibility with existing code.
4301 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
4302 compatibility with existing code. In particular the 'ctx' parameter does
4303 not have to be to be initialized before the call to EVP_DigestInit() and
4304 it is tidied up after a call to EVP_DigestFinal(). New function
4305 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
4306 EVP_MD_CTX_copy() changed to not require the destination to be
4307 initialized valid and new function EVP_MD_CTX_copy_ex() added which
4308 requires the destination to be valid.
4310 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
4311 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
4314 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
4315 so that complete 'Handshake' protocol structures are kept in memory
4316 instead of overwriting 'msg_type' and 'length' with 'body' data.
4319 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
4320 [Massimo Santin via Richard Levitte]
4322 *) Major restructuring to the underlying ENGINE code. This includes
4323 reduction of linker bloat, separation of pure "ENGINE" manipulation
4324 (initialisation, etc) from functionality dealing with implementations
4325 of specific crypto iterfaces. This change also introduces integrated
4326 support for symmetric ciphers and digest implementations - so ENGINEs
4327 can now accelerate these by providing EVP_CIPHER and EVP_MD
4328 implementations of their own. This is detailed in crypto/engine/README
4329 as it couldn't be adequately described here. However, there are a few
4330 API changes worth noting - some RSA, DSA, DH, and RAND functions that
4331 were changed in the original introduction of ENGINE code have now
4332 reverted back - the hooking from this code to ENGINE is now a good
4333 deal more passive and at run-time, operations deal directly with
4334 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
4335 dereferencing through an ENGINE pointer any more. Also, the ENGINE
4336 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
4337 they were not being used by the framework as there is no concept of a
4338 BIGNUM_METHOD and they could not be generalised to the new
4339 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
4340 ENGINE_cpy() has been removed as it cannot be consistently defined in
4344 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
4347 *) Change mkdef.pl to sort symbols that get the same entry number,
4348 and make sure the automatically generated functions ERR_load_*
4349 become part of libeay.num as well.
4352 *) New function SSL_renegotiate_pending(). This returns true once
4353 renegotiation has been requested (either SSL_renegotiate() call
4354 or HelloRequest/ClientHello receveived from the peer) and becomes
4355 false once a handshake has been completed.
4356 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
4357 sends a HelloRequest, but does not ensure that a handshake takes
4358 place. SSL_renegotiate_pending() is useful for checking if the
4359 client has followed the request.)
4362 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
4363 By default, clients may request session resumption even during
4364 renegotiation (if session ID contexts permit); with this option,
4365 session resumption is possible only in the first handshake.
4367 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
4368 more bits available for options that should not be part of
4369 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
4372 *) Add some demos for certificate and certificate request creation.
4375 *) Make maximum certificate chain size accepted from the peer application
4376 settable (SSL*_get/set_max_cert_list()), as proposed by
4377 "Douglas E. Engert" <deengert@anl.gov>.
4380 *) Add support for shared libraries for Unixware-7
4381 (Boyd Lynn Gerber <gerberb@zenez.com>).
4384 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
4385 be done prior to destruction. Use this to unload error strings from
4386 ENGINEs that load their own error strings. NB: This adds two new API
4387 functions to "get" and "set" this destroy handler in an ENGINE.
4390 *) Alter all existing ENGINE implementations (except "openssl" and
4391 "openbsd") to dynamically instantiate their own error strings. This
4392 makes them more flexible to be built both as statically-linked ENGINEs
4393 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
4394 Also, add stub code to each that makes building them as self-contained
4395 shared-libraries easier (see README.ENGINE).
4398 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
4399 implementations into applications that are completely implemented in
4400 self-contained shared-libraries. The "dynamic" ENGINE exposes control
4401 commands that can be used to configure what shared-library to load and
4402 to control aspects of the way it is handled. Also, made an update to
4403 the README.ENGINE file that brings its information up-to-date and
4404 provides some information and instructions on the "dynamic" ENGINE
4405 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
4408 *) Make it possible to unload ranges of ERR strings with a new
4409 "ERR_unload_strings" function.
4412 *) Add a copy() function to EVP_MD.
4415 *) Make EVP_MD routines take a context pointer instead of just the
4416 md_data void pointer.
4419 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
4420 that the digest can only process a single chunk of data
4421 (typically because it is provided by a piece of
4422 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
4423 is only going to provide a single chunk of data, and hence the
4424 framework needn't accumulate the data for oneshot drivers.
4427 *) As with "ERR", make it possible to replace the underlying "ex_data"
4428 functions. This change also alters the storage and management of global
4429 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
4430 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
4431 index counters. The API functions that use this state have been changed
4432 to take a "class_index" rather than pointers to the class's local STACK
4433 and counter, and there is now an API function to dynamically create new
4434 classes. This centralisation allows us to (a) plug a lot of the
4435 thread-safety problems that existed, and (b) makes it possible to clean
4436 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
4437 such data would previously have always leaked in application code and
4438 workarounds were in place to make the memory debugging turn a blind eye
4439 to it. Application code that doesn't use this new function will still
4440 leak as before, but their memory debugging output will announce it now
4441 rather than letting it slide.
4443 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
4444 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
4445 has a return value to indicate success or failure.
4448 *) Make it possible to replace the underlying "ERR" functions such that the
4449 global state (2 LHASH tables and 2 locks) is only used by the "default"
4450 implementation. This change also adds two functions to "get" and "set"
4451 the implementation prior to it being automatically set the first time
4452 any other ERR function takes place. Ie. an application can call "get",
4453 pass the return value to a module it has just loaded, and that module
4454 can call its own "set" function using that value. This means the
4455 module's "ERR" operations will use (and modify) the error state in the
4456 application and not in its own statically linked copy of OpenSSL code.
4459 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
4460 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
4461 the operation, and provides a more encapsulated way for external code
4462 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
4463 to use these functions rather than manually incrementing the counts.
4465 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
4468 *) Add EVP test program.
4471 *) Add symmetric cipher support to ENGINE. Expect the API to change!
4474 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
4475 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
4476 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
4477 These allow a CRL to be built without having to access X509_CRL fields
4478 directly. Modify 'ca' application to use new functions.
4481 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
4482 bug workarounds. Rollback attack detection is a security feature.
4483 The problem will only arise on OpenSSL servers when TLSv1 is not
4484 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
4485 Software authors not wanting to support TLSv1 will have special reasons
4486 for their choice and can explicitly enable this option.
4487 [Bodo Moeller, Lutz Jaenicke]
4489 *) Rationalise EVP so it can be extended: don't include a union of
4490 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
4491 (similar to those existing for EVP_CIPHER_CTX).
4496 EVP_MD_CTX_init(&md); /* new function call */
4497 EVP_DigestInit(&md, EVP_sha1());
4498 EVP_DigestUpdate(&md, in, len);
4499 EVP_DigestFinal(&md, out, NULL);
4500 EVP_MD_CTX_cleanup(&md); /* new function call */
4504 *) Make DES key schedule conform to the usual scheme, as well as
4505 correcting its structure. This means that calls to DES functions
4506 now have to pass a pointer to a des_key_schedule instead of a
4507 plain des_key_schedule (which was actually always a pointer
4510 des_key_schedule ks;
4512 des_set_key_checked(..., &ks);
4513 des_ncbc_encrypt(..., &ks, ...);
4515 (Note that a later change renames 'des_...' into 'DES_...'.)
4518 *) Initial reduction of linker bloat: the use of some functions, such as
4519 PEM causes large amounts of unused functions to be linked in due to
4520 poor organisation. For example pem_all.c contains every PEM function
4521 which has a knock on effect of linking in large amounts of (unused)
4522 ASN1 code. Grouping together similar functions and splitting unrelated
4523 functions prevents this.
4526 *) Cleanup of EVP macros.
4529 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4530 correct _ecb suffix.
4533 *) Add initial OCSP responder support to ocsp application. The
4534 revocation information is handled using the text based index
4535 use by the ca application. The responder can either handle
4536 requests generated internally, supplied in files (for example
4537 via a CGI script) or using an internal minimal server.
4540 *) Add configuration choices to get zlib compression for TLS.
4543 *) Changes to Kerberos SSL for RFC 2712 compliance:
4544 1. Implemented real KerberosWrapper, instead of just using
4545 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4546 2. Implemented optional authenticator field of KerberosWrapper.
4548 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4549 and authenticator structs; see crypto/krb5/.
4551 Generalized Kerberos calls to support multiple Kerberos libraries.
4552 [Vern Staats <staatsvr@asc.hpc.mil>,
4553 Jeffrey Altman <jaltman@columbia.edu>
4554 via Richard Levitte]
4556 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4557 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4558 values for each of the key sizes rather than having just
4559 parameters (and 'speed' generating keys each time).
4562 *) Speed up EVP routines.
4565 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4566 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4567 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4568 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4570 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4571 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4572 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4575 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4577 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4580 *) Added the OS2-EMX target.
4581 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4583 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4584 to support NCONF routines in extension code. New function CONF_set_nconf()
4585 to allow functions which take an NCONF to also handle the old LHASH
4586 structure: this means that the old CONF compatible routines can be
4587 retained (in particular wrt extensions) without having to duplicate the
4588 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4591 *) Enhance the general user interface with mechanisms for inner control
4592 and with possibilities to have yes/no kind of prompts.
4595 *) Change all calls to low level digest routines in the library and
4596 applications to use EVP. Add missing calls to HMAC_cleanup() and
4597 don't assume HMAC_CTX can be copied using memcpy().
4598 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4600 *) Add the possibility to control engines through control names but with
4601 arbitrary arguments instead of just a string.
4602 Change the key loaders to take a UI_METHOD instead of a callback
4603 function pointer. NOTE: this breaks binary compatibility with earlier
4604 versions of OpenSSL [engine].
4605 Adapt the nCipher code for these new conditions and add a card insertion
4609 *) Enhance the general user interface with mechanisms to better support
4610 dialog box interfaces, application-defined prompts, the possibility
4611 to use defaults (for example default passwords from somewhere else)
4612 and interrupts/cancellations.
4615 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4616 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4619 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4620 tidy up some unnecessarily weird code in 'sk_new()').
4621 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4623 *) Change the key loading routines for ENGINEs to use the same kind
4624 callback (pem_password_cb) as all other routines that need this
4628 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4629 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4630 than this minimum value is recommended.
4633 *) New random seeder for OpenVMS, using the system process statistics
4634 that are easily reachable.
4637 *) Windows apparently can't transparently handle global
4638 variables defined in DLLs. Initialisations such as:
4640 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4642 wont compile. This is used by the any applications that need to
4643 declare their own ASN1 modules. This was fixed by adding the option
4644 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4645 needed for static libraries under Win32.
4648 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4649 setting of purpose and trust fields. New X509_STORE trust and
4650 purpose functions and tidy up setting in other SSL functions.
4653 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4654 structure. These are inherited by X509_STORE_CTX when it is
4655 initialised. This allows various defaults to be set in the
4656 X509_STORE structure (such as flags for CRL checking and custom
4657 purpose or trust settings) for functions which only use X509_STORE_CTX
4658 internally such as S/MIME.
4660 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4661 trust settings if they are not set in X509_STORE. This allows X509_STORE
4662 purposes and trust (in S/MIME for example) to override any set by default.
4664 Add command line options for CRL checking to smime, s_client and s_server
4668 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4669 are set then the CRL is looked up in the X509_STORE structure and
4670 its validity and signature checked, then if the certificate is found
4671 in the CRL the verify fails with a revoked error.
4673 Various new CRL related callbacks added to X509_STORE_CTX structure.
4675 Command line options added to 'verify' application to support this.
4677 This needs some additional work, such as being able to handle multiple
4678 CRLs with different times, extension based lookup (rather than just
4679 by subject name) and ultimately more complete V2 CRL extension
4683 *) Add a general user interface API (crypto/ui/). This is designed
4684 to replace things like des_read_password and friends (backward
4685 compatibility functions using this new API are provided).
4686 The purpose is to remove prompting functions from the DES code
4687 section as well as provide for prompting through dialog boxes in
4688 a window system and the like.
4691 *) Add "ex_data" support to ENGINE so implementations can add state at a
4692 per-structure level rather than having to store it globally.
4695 *) Make it possible for ENGINE structures to be copied when retrieved by
4696 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4697 This causes the "original" ENGINE structure to act like a template,
4698 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4699 operational state can be localised to each ENGINE structure, despite the
4700 fact they all share the same "methods". New ENGINE structures returned in
4701 this case have no functional references and the return value is the single
4702 structural reference. This matches the single structural reference returned
4703 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4707 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4708 needs to match any other type at all we need to manually clear the
4712 *) Changes to the "openssl engine" utility to include;
4713 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4714 about an ENGINE's available control commands.
4715 - executing control commands from command line arguments using the
4716 '-pre' and '-post' switches. '-post' is only used if '-t' is
4717 specified and the ENGINE is successfully initialised. The syntax for
4718 the individual commands are colon-separated, for example;
4719 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4722 *) New dynamic control command support for ENGINEs. ENGINEs can now
4723 declare their own commands (numbers), names (strings), descriptions,
4724 and input types for run-time discovery by calling applications. A
4725 subset of these commands are implicitly classed as "executable"
4726 depending on their input type, and only these can be invoked through
4727 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4728 can be based on user input, config files, etc). The distinction is
4729 that "executable" commands cannot return anything other than a boolean
4730 result and can only support numeric or string input, whereas some
4731 discoverable commands may only be for direct use through
4732 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4733 pointers, or other custom uses. The "executable" commands are to
4734 support parameterisations of ENGINE behaviour that can be
4735 unambiguously defined by ENGINEs and used consistently across any
4736 OpenSSL-based application. Commands have been added to all the
4737 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4738 control over shared-library paths without source code alterations.
4741 *) Changed all ENGINE implementations to dynamically allocate their
4742 ENGINEs rather than declaring them statically. Apart from this being
4743 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4744 this also allows the implementations to compile without using the
4745 internal engine_int.h header.
4748 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4749 'const' value. Any code that should be able to modify a RAND_METHOD
4750 should already have non-const pointers to it (ie. they should only
4751 modify their own ones).
4754 *) Made a variety of little tweaks to the ENGINE code.
4755 - "atalla" and "ubsec" string definitions were moved from header files
4756 to C code. "nuron" string definitions were placed in variables
4757 rather than hard-coded - allowing parameterisation of these values
4758 later on via ctrl() commands.
4759 - Removed unused "#if 0"'d code.
4760 - Fixed engine list iteration code so it uses ENGINE_free() to release
4761 structural references.
4762 - Constified the RAND_METHOD element of ENGINE structures.
4763 - Constified various get/set functions as appropriate and added
4764 missing functions (including a catch-all ENGINE_cpy that duplicates
4765 all ENGINE values onto a new ENGINE except reference counts/state).
4766 - Removed NULL parameter checks in get/set functions. Setting a method
4767 or function to NULL is a way of cancelling out a previously set
4768 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4769 and doesn't justify the extra error symbols and code.
4770 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4771 flags from engine_int.h to engine.h.
4772 - Changed prototypes for ENGINE handler functions (init(), finish(),
4773 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4776 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4777 to the algorithm using long division. The binary algorithm can be
4778 used only if the modulus is odd. On 32-bit systems, it is faster
4779 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4780 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4781 up to 450 bits. In 64-bit environments, the binary algorithm
4782 appears to be advantageous for much longer moduli; here we use it
4783 for moduli up to 2048 bits.
4786 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4787 could not support the combine flag in choice fields.
4790 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4791 extensions from a certificate request to the certificate.
4794 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4795 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4796 file: this allows the display of the certificate about to be
4797 signed to be customised, to allow certain fields to be included
4798 or excluded and extension details. The old system didn't display
4799 multicharacter strings properly, omitted fields not in the policy
4800 and couldn't display additional details such as extensions.
4803 *) Function EC_POINTs_mul for multiple scalar multiplication
4804 of an arbitrary number of elliptic curve points
4805 \sum scalars[i]*points[i],
4806 optionally including the generator defined for the EC_GROUP:
4807 scalar*generator + \sum scalars[i]*points[i].
4809 EC_POINT_mul is a simple wrapper function for the typical case
4810 that the point list has just one item (besides the optional
4814 *) First EC_METHODs for curves over GF(p):
4816 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4817 operations and provides various method functions that can also
4818 operate with faster implementations of modular arithmetic.
4820 EC_GFp_mont_method() reuses most functions that are part of
4821 EC_GFp_simple_method, but uses Montgomery arithmetic.
4823 [Bodo Moeller; point addition and point doubling
4824 implementation directly derived from source code provided by
4825 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4827 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4828 crypto/ec/ec_lib.c):
4830 Curves are EC_GROUP objects (with an optional group generator)
4831 based on EC_METHODs that are built into the library.
4833 Points are EC_POINT objects based on EC_GROUP objects.
4835 Most of the framework would be able to handle curves over arbitrary
4836 finite fields, but as there are no obvious types for fields other
4837 than GF(p), some functions are limited to that for now.
4840 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4841 that the file contains a complete HTTP response.
4844 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4845 change the def and num file printf format specifier from "%-40sXXX"
4846 to "%-39s XXX". The latter will always guarantee a space after the
4847 field while the former will cause them to run together if the field
4848 is 40 of more characters long.
4851 *) Constify the cipher and digest 'method' functions and structures
4852 and modify related functions to take constant EVP_MD and EVP_CIPHER
4856 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4857 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4860 *) Modify EVP_Digest*() routines so they now return values. Although the
4861 internal software routines can never fail additional hardware versions
4865 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4867 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4868 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4871 ERR_R_NESTED_ASN1_ERROR
4873 ERR_R_MISSING_ASN1_EOS
4874 were 4 .. 9, conflicting with
4875 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4877 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4878 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4880 Add new error code 'ERR_R_INTERNAL_ERROR'.
4883 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4887 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4888 sets the subject name for a new request or supersedes the
4889 subject name in a given request. Formats that can be parsed are
4890 'CN=Some Name, OU=myOU, C=IT'
4892 'CN=Some Name/OU=myOU/C=IT'.
4894 Add options '-batch' and '-verbose' to 'openssl req'.
4895 [Massimiliano Pala <madwolf@hackmasters.net>]
4897 *) Introduce the possibility to access global variables through
4898 functions on platform were that's the best way to handle exporting
4899 global variables in shared libraries. To enable this functionality,
4900 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4901 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4902 is normally done by Configure or something similar).
4904 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4905 in the source file (foo.c) like this:
4907 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4908 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4910 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4911 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4913 OPENSSL_DECLARE_GLOBAL(int,foo);
4914 #define foo OPENSSL_GLOBAL_REF(foo)
4915 OPENSSL_DECLARE_GLOBAL(double,bar);
4916 #define bar OPENSSL_GLOBAL_REF(bar)
4918 The #defines are very important, and therefore so is including the
4919 header file everywhere where the defined globals are used.
4921 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4922 of ASN.1 items, but that structure is a bit different.
4924 The largest change is in util/mkdef.pl which has been enhanced with
4925 better and easier to understand logic to choose which symbols should
4926 go into the Windows .def files as well as a number of fixes and code
4927 cleanup (among others, algorithm keywords are now sorted
4928 lexicographically to avoid constant rewrites).
4931 *) In BN_div() keep a copy of the sign of 'num' before writing the
4932 result to 'rm' because if rm==num the value will be overwritten
4933 and produce the wrong result if 'num' is negative: this caused
4934 problems with BN_mod() and BN_nnmod().
4937 *) Function OCSP_request_verify(). This checks the signature on an
4938 OCSP request and verifies the signer certificate. The signer
4939 certificate is just checked for a generic purpose and OCSP request
4943 *) Add OCSP_check_validity() function to check the validity of OCSP
4944 responses. OCSP responses are prepared in real time and may only
4945 be a few seconds old. Simply checking that the current time lies
4946 between thisUpdate and nextUpdate max reject otherwise valid responses
4947 caused by either OCSP responder or client clock inaccuracy. Instead
4948 we allow thisUpdate and nextUpdate to fall within a certain period of
4949 the current time. The age of the response can also optionally be
4950 checked. Two new options -validity_period and -status_age added to
4954 *) If signature or public key algorithm is unrecognized print out its
4955 OID rather that just UNKNOWN.
4958 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4959 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4960 ID to be generated from the issuer certificate alone which can then be
4961 passed to OCSP_id_issuer_cmp().
4964 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4965 ASN1 modules to export functions returning ASN1_ITEM pointers
4966 instead of the ASN1_ITEM structures themselves. This adds several
4967 new macros which allow the underlying ASN1 function/structure to
4968 be accessed transparently. As a result code should not use ASN1_ITEM
4969 references directly (such as &X509_it) but instead use the relevant
4970 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4971 use of the new ASN1 code on platforms where exporting structures
4972 is problematical (for example in shared libraries) but exporting
4973 functions returning pointers to structures is not.
4976 *) Add support for overriding the generation of SSL/TLS session IDs.
4977 These callbacks can be registered either in an SSL_CTX or per SSL.
4978 The purpose of this is to allow applications to control, if they wish,
4979 the arbitrary values chosen for use as session IDs, particularly as it
4980 can be useful for session caching in multiple-server environments. A
4981 command-line switch for testing this (and any client code that wishes
4982 to use such a feature) has been added to "s_server".
4983 [Geoff Thorpe, Lutz Jaenicke]
4985 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4986 of the form '#if defined(...) || defined(...) || ...' and
4987 '#if !defined(...) && !defined(...) && ...'. This also avoids
4988 the growing number of special cases it was previously handling.
4991 *) Make all configuration macros available for application by making
4992 sure they are available in opensslconf.h, by giving them names starting
4993 with "OPENSSL_" to avoid conflicts with other packages and by making
4994 sure e_os2.h will cover all platform-specific cases together with
4996 Additionally, it is now possible to define configuration/platform-
4997 specific names (called "system identities"). In the C code, these
4998 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4999 macro with the name beginning with "OPENSSL_SYS_", which is determined
5000 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
5004 *) New option -set_serial to 'req' and 'x509' this allows the serial
5005 number to use to be specified on the command line. Previously self
5006 signed certificates were hard coded with serial number 0 and the
5007 CA options of 'x509' had to use a serial number in a file which was
5011 *) New options to 'ca' utility to support V2 CRL entry extensions.
5012 Currently CRL reason, invalidity date and hold instruction are
5013 supported. Add new CRL extensions to V3 code and some new objects.
5016 *) New function EVP_CIPHER_CTX_set_padding() this is used to
5017 disable standard block padding (aka PKCS#5 padding) in the EVP
5018 API, which was previously mandatory. This means that the data is
5019 not padded in any way and so the total length much be a multiple
5020 of the block size, otherwise an error occurs.
5023 *) Initial (incomplete) OCSP SSL support.
5026 *) New function OCSP_parse_url(). This splits up a URL into its host,
5027 port and path components: primarily to parse OCSP URLs. New -url
5028 option to ocsp utility.
5031 *) New nonce behavior. The return value of OCSP_check_nonce() now
5032 reflects the various checks performed. Applications can decide
5033 whether to tolerate certain situations such as an absent nonce
5034 in a response when one was present in a request: the ocsp application
5035 just prints out a warning. New function OCSP_add1_basic_nonce()
5036 this is to allow responders to include a nonce in a response even if
5037 the request is nonce-less.
5040 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
5041 skipped when using openssl x509 multiple times on a single input file,
5042 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
5045 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
5046 set string type: to handle setting ASN1_TIME structures. Fix ca
5047 utility to correctly initialize revocation date of CRLs.
5050 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
5051 the clients preferred ciphersuites and rather use its own preferences.
5052 Should help to work around M$ SGC (Server Gated Cryptography) bug in
5053 Internet Explorer by ensuring unchanged hash method during stepup.
5054 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
5057 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
5058 to aes and add a new 'exist' option to print out symbols that don't
5062 *) Additional options to ocsp utility to allow flags to be set and
5063 additional certificates supplied.
5066 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
5067 OCSP client a number of certificate to only verify the response
5071 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
5072 handle the new API. Currently only ECB, CBC modes supported. Add new
5075 Add TLS AES ciphersuites as described in RFC3268, "Advanced
5076 Encryption Standard (AES) Ciphersuites for Transport Layer
5077 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
5078 not enabled by default and were not part of the "ALL" ciphersuite
5079 alias because they were not yet official; they could be
5080 explicitly requested by specifying the "AESdraft" ciphersuite
5081 group alias. In the final release of OpenSSL 0.9.7, the group
5082 alias is called "AES" and is part of "ALL".)
5083 [Ben Laurie, Steve Henson, Bodo Moeller]
5085 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
5086 request to response.
5089 *) Functions for OCSP responders. OCSP_request_onereq_count(),
5090 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
5091 extract information from a certificate request. OCSP_response_create()
5092 creates a response and optionally adds a basic response structure.
5093 OCSP_basic_add1_status() adds a complete single response to a basic
5094 response and returns the OCSP_SINGLERESP structure just added (to allow
5095 extensions to be included for example). OCSP_basic_add1_cert() adds a
5096 certificate to a basic response and OCSP_basic_sign() signs a basic
5097 response with various flags. New helper functions ASN1_TIME_check()
5098 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
5099 (converts ASN1_TIME to GeneralizedTime).
5102 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
5103 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
5104 structure from a certificate. X509_pubkey_digest() digests the public_key
5105 contents: this is used in various key identifiers.
5108 *) Make sk_sort() tolerate a NULL argument.
5109 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
5111 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
5112 passed by the function are trusted implicitly. If any of them signed the
5113 response then it is assumed to be valid and is not verified.
5116 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
5117 to data. This was previously part of the PKCS7 ASN1 code. This
5118 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
5119 [Steve Henson, reported by Kenneth R. Robinette
5120 <support@securenetterm.com>]
5122 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
5123 routines: without these tracing memory leaks is very painful.
5124 Fix leaks in PKCS12 and PKCS7 routines.
5127 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
5128 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
5129 effectively meant GeneralizedTime would never be used. Now it
5130 is initialised to -1 but X509_time_adj() now has to check the value
5131 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
5132 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
5133 [Steve Henson, reported by Kenneth R. Robinette
5134 <support@securenetterm.com>]
5136 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
5137 result in a zero length in the ASN1_INTEGER structure which was
5138 not consistent with the structure when d2i_ASN1_INTEGER() was used
5139 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
5140 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
5141 where it did not print out a minus for negative ASN1_INTEGER.
5144 *) Add summary printout to ocsp utility. The various functions which
5145 convert status values to strings have been renamed to:
5146 OCSP_response_status_str(), OCSP_cert_status_str() and
5147 OCSP_crl_reason_str() and are no longer static. New options
5148 to verify nonce values and to disable verification. OCSP response
5149 printout format cleaned up.
5152 *) Add additional OCSP certificate checks. These are those specified
5153 in RFC2560. This consists of two separate checks: the CA of the
5154 certificate being checked must either be the OCSP signer certificate
5155 or the issuer of the OCSP signer certificate. In the latter case the
5156 OCSP signer certificate must contain the OCSP signing extended key
5157 usage. This check is performed by attempting to match the OCSP
5158 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
5159 in the OCSP_CERTID structures of the response.
5162 *) Initial OCSP certificate verification added to OCSP_basic_verify()
5163 and related routines. This uses the standard OpenSSL certificate
5164 verify routines to perform initial checks (just CA validity) and
5165 to obtain the certificate chain. Then additional checks will be
5166 performed on the chain. Currently the root CA is checked to see
5167 if it is explicitly trusted for OCSP signing. This is used to set
5168 a root CA as a global signing root: that is any certificate that
5169 chains to that CA is an acceptable OCSP signing certificate.
5172 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
5173 extensions from a separate configuration file.
5174 As when reading extensions from the main configuration file,
5175 the '-extensions ...' option may be used for specifying the
5177 [Massimiliano Pala <madwolf@comune.modena.it>]
5179 *) New OCSP utility. Allows OCSP requests to be generated or
5180 read. The request can be sent to a responder and the output
5181 parsed, outputed or printed in text form. Not complete yet:
5182 still needs to check the OCSP response validity.
5185 *) New subcommands for 'openssl ca':
5186 'openssl ca -status <serial>' prints the status of the cert with
5187 the given serial number (according to the index file).
5188 'openssl ca -updatedb' updates the expiry status of certificates
5190 [Massimiliano Pala <madwolf@comune.modena.it>]
5192 *) New '-newreq-nodes' command option to CA.pl. This is like
5193 '-newreq', but calls 'openssl req' with the '-nodes' option
5194 so that the resulting key is not encrypted.
5195 [Damien Miller <djm@mindrot.org>]
5197 *) New configuration for the GNU Hurd.
5198 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
5200 *) Initial code to implement OCSP basic response verify. This
5201 is currently incomplete. Currently just finds the signer's
5202 certificate and verifies the signature on the response.
5205 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
5206 value of OPENSSLDIR. This is available via the new '-d' option
5207 to 'openssl version', and is also included in 'openssl version -a'.
5210 *) Allowing defining memory allocation callbacks that will be given
5211 file name and line number information in additional arguments
5212 (a const char* and an int). The basic functionality remains, as
5213 well as the original possibility to just replace malloc(),
5214 realloc() and free() by functions that do not know about these
5215 additional arguments. To register and find out the current
5216 settings for extended allocation functions, the following
5217 functions are provided:
5219 CRYPTO_set_mem_ex_functions
5220 CRYPTO_set_locked_mem_ex_functions
5221 CRYPTO_get_mem_ex_functions
5222 CRYPTO_get_locked_mem_ex_functions
5224 These work the same way as CRYPTO_set_mem_functions and friends.
5225 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
5226 extended allocation function is enabled.
5227 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
5228 a conventional allocation function is enabled.
5229 [Richard Levitte, Bodo Moeller]
5231 *) Finish off removing the remaining LHASH function pointer casts.
5232 There should no longer be any prototype-casting required when using
5233 the LHASH abstraction, and any casts that remain are "bugs". See
5234 the callback types and macros at the head of lhash.h for details
5235 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
5238 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
5239 If /dev/[u]random devices are not available or do not return enough
5240 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
5242 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
5243 /etc/entropy will be queried once each in this sequence, quering stops
5244 when enough entropy was collected without querying more sockets.
5247 *) Change the Unix RAND_poll() variant to be able to poll several
5248 random devices, as specified by DEVRANDOM, until a sufficient amount
5249 of data has been collected. We spend at most 10 ms on each file
5250 (select timeout) and read in non-blocking mode. DEVRANDOM now
5251 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
5252 (previously it was just the string "/dev/urandom"), so on typical
5253 platforms the 10 ms delay will never occur.
5254 Also separate out the Unix variant to its own file, rand_unix.c.
5255 For VMS, there's a currently-empty rand_vms.c.
5258 *) Move OCSP client related routines to ocsp_cl.c. These
5259 provide utility functions which an application needing
5260 to issue a request to an OCSP responder and analyse the
5261 response will typically need: as opposed to those which an
5262 OCSP responder itself would need which will be added later.
5264 OCSP_request_sign() signs an OCSP request with an API similar
5265 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
5266 response. OCSP_response_get1_basic() extracts basic response
5267 from response. OCSP_resp_find_status(): finds and extracts status
5268 information from an OCSP_CERTID structure (which will be created
5269 when the request structure is built). These are built from lower
5270 level functions which work on OCSP_SINGLERESP structures but
5271 wont normally be used unless the application wishes to examine
5272 extensions in the OCSP response for example.
5274 Replace nonce routines with a pair of functions.
5275 OCSP_request_add1_nonce() adds a nonce value and optionally
5276 generates a random value. OCSP_check_nonce() checks the
5277 validity of the nonce in an OCSP response.
5280 *) Change function OCSP_request_add() to OCSP_request_add0_id().
5281 This doesn't copy the supplied OCSP_CERTID and avoids the
5282 need to free up the newly created id. Change return type
5283 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
5284 This can then be used to add extensions to the request.
5285 Deleted OCSP_request_new(), since most of its functionality
5286 is now in OCSP_REQUEST_new() (and the case insensitive name
5287 clash) apart from the ability to set the request name which
5288 will be added elsewhere.
5291 *) Update OCSP API. Remove obsolete extensions argument from
5292 various functions. Extensions are now handled using the new
5293 OCSP extension code. New simple OCSP HTTP function which
5294 can be used to send requests and parse the response.
5297 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
5298 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
5299 uses the special reorder version of SET OF to sort the attributes
5300 and reorder them to match the encoded order. This resolves a long
5301 standing problem: a verify on a PKCS7 structure just after signing
5302 it used to fail because the attribute order did not match the
5303 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
5304 it uses the received order. This is necessary to tolerate some broken
5305 software that does not order SET OF. This is handled by encoding
5306 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
5307 to produce the required SET OF.
5310 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
5311 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
5312 files to get correct declarations of the ASN.1 item variables.
5315 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
5316 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
5317 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
5318 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
5319 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
5320 ASN1_ITEM and no wrapper functions.
5323 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
5324 replace the old function pointer based I/O routines. Change most of
5325 the *_d2i_bio() and *_d2i_fp() functions to use these.
5328 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
5329 lines, recognice more "algorithms" that can be deselected, and make
5330 it complain about algorithm deselection that isn't recognised.
5333 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
5334 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
5335 to use new functions. Add NO_ASN1_OLD which can be set to remove
5336 some old style ASN1 functions: this can be used to determine if old
5337 code will still work when these eventually go away.
5340 *) New extension functions for OCSP structures, these follow the
5341 same conventions as certificates and CRLs.
5344 *) New function X509V3_add1_i2d(). This automatically encodes and
5345 adds an extension. Its behaviour can be customised with various
5346 flags to append, replace or delete. Various wrappers added for
5347 certifcates and CRLs.
5350 *) Fix to avoid calling the underlying ASN1 print routine when
5351 an extension cannot be parsed. Correct a typo in the
5352 OCSP_SERVICELOC extension. Tidy up print OCSP format.
5355 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
5356 entries for variables.
5359 *) Add functionality to apps/openssl.c for detecting locking
5360 problems: As the program is single-threaded, all we have
5361 to do is register a locking callback using an array for
5362 storing which locks are currently held by the program.
5365 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
5366 SSL_get_ex_data_X509_STORE_idx(), which is used in
5367 ssl_verify_cert_chain() and thus can be called at any time
5368 during TLS/SSL handshakes so that thread-safety is essential.
5369 Unfortunately, the ex_data design is not at all suited
5370 for multi-threaded use, so it probably should be abolished.
5373 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
5374 [Broadcom, tweaked and integrated by Geoff Thorpe]
5376 *) Move common extension printing code to new function
5377 X509V3_print_extensions(). Reorganise OCSP print routines and
5378 implement some needed OCSP ASN1 functions. Add OCSP extensions.
5381 *) New function X509_signature_print() to remove duplication in some
5385 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
5386 set (this was treated exactly the same as SET OF previously). This
5387 is used to reorder the STACK representing the structure to match the
5388 encoding. This will be used to get round a problem where a PKCS7
5389 structure which was signed could not be verified because the STACK
5390 order did not reflect the encoded order.
5393 *) Reimplement the OCSP ASN1 module using the new code.
5396 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
5397 for its ASN1 operations. The old style function pointers still exist
5398 for now but they will eventually go away.
5401 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
5402 completely replaces the old ASN1 functionality with a table driven
5403 encoder and decoder which interprets an ASN1_ITEM structure describing
5404 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
5405 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
5406 has also been converted to the new form.
5409 *) Change BN_mod_exp_recp so that negative moduli are tolerated
5410 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
5411 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
5412 for negative moduli.
5415 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
5416 of not touching the result's sign bit.
5419 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
5423 *) Changed the LHASH code to use prototypes for callbacks, and created
5424 macros to declare and implement thin (optionally static) functions
5425 that provide type-safety and avoid function pointer casting for the
5426 type-specific callbacks.
5429 *) Added Kerberos Cipher Suites to be used with TLS, as written in
5431 [Veers Staats <staatsvr@asc.hpc.mil>,
5432 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
5434 *) Reformat the FAQ so the different questions and answers can be divided
5435 in sections depending on the subject.
5438 *) Have the zlib compression code load ZLIB.DLL dynamically under
5442 *) New function BN_mod_sqrt for computing square roots modulo a prime
5443 (using the probabilistic Tonelli-Shanks algorithm unless
5444 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
5445 be handled deterministically).
5446 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5448 *) Make BN_mod_inverse faster by explicitly handling small quotients
5449 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
5450 512 bits], about 30% for larger ones [1024 or 2048 bits].)
5453 *) New function BN_kronecker.
5456 *) Fix BN_gcd so that it works on negative inputs; the result is
5457 positive unless both parameters are zero.
5458 Previously something reasonably close to an infinite loop was
5459 possible because numbers could be growing instead of shrinking
5460 in the implementation of Euclid's algorithm.
5463 *) Fix BN_is_word() and BN_is_one() macros to take into account the
5464 sign of the number in question.
5466 Fix BN_is_word(a,w) to work correctly for w == 0.
5468 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
5469 because its test if the absolute value of 'a' equals 'w'.
5470 Note that BN_abs_is_word does *not* handle w == 0 reliably;
5471 it exists mostly for use in the implementations of BN_is_zero(),
5472 BN_is_one(), and BN_is_word().
5475 *) New function BN_swap.
5478 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
5479 the exponentiation functions are more likely to produce reasonable
5480 results on negative inputs.
5483 *) Change BN_mod_mul so that the result is always non-negative.
5484 Previously, it could be negative if one of the factors was negative;
5485 I don't think anyone really wanted that behaviour.
5488 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
5489 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
5490 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
5491 and add new functions:
5500 BN_mod_lshift1_quick
5504 These functions always generate non-negative results.
5506 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
5507 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
5509 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
5510 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
5511 be reduced modulo m.
5512 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
5515 The following entry accidentily appeared in the CHANGES file
5516 distributed with OpenSSL 0.9.7. The modifications described in
5517 it do *not* apply to OpenSSL 0.9.7.
5519 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5520 was actually never needed) and in BN_mul(). The removal in BN_mul()
5521 required a small change in bn_mul_part_recursive() and the addition
5522 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5523 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5524 bn_sub_words() and bn_add_words() except they take arrays with
5529 *) In 'openssl passwd', verify passwords read from the terminal
5530 unless the '-salt' option is used (which usually means that
5531 verification would just waste user's time since the resulting
5532 hash is going to be compared with some given password hash)
5533 or the new '-noverify' option is used.
5535 This is an incompatible change, but it does not affect
5536 non-interactive use of 'openssl passwd' (passwords on the command
5537 line, '-stdin' option, '-in ...' option) and thus should not
5541 *) Remove all references to RSAref, since there's no more need for it.
5544 *) Make DSO load along a path given through an environment variable
5545 (SHLIB_PATH) with shl_load().
5548 *) Constify the ENGINE code as a result of BIGNUM constification.
5549 Also constify the RSA code and most things related to it. In a
5550 few places, most notable in the depth of the ASN.1 code, ugly
5551 casts back to non-const were required (to be solved at a later
5555 *) Make it so the openssl application has all engines loaded by default.
5558 *) Constify the BIGNUM routines a little more.
5561 *) Add the following functions:
5563 ENGINE_load_cswift()
5565 ENGINE_load_atalla()
5567 ENGINE_load_builtin_engines()
5569 That way, an application can itself choose if external engines that
5570 are built-in in OpenSSL shall ever be used or not. The benefit is
5571 that applications won't have to be linked with libdl or other dso
5572 libraries unless it's really needed.
5574 Changed 'openssl engine' to load all engines on demand.
5575 Changed the engine header files to avoid the duplication of some
5576 declarations (they differed!).
5579 *) 'openssl engine' can now list capabilities.
5582 *) Better error reporting in 'openssl engine'.
5585 *) Never call load_dh_param(NULL) in s_server.
5588 *) Add engine application. It can currently list engines by name and
5589 identity, and test if they are actually available.
5592 *) Improve RPM specification file by forcing symbolic linking and making
5593 sure the installed documentation is also owned by root.root.
5594 [Damien Miller <djm@mindrot.org>]
5596 *) Give the OpenSSL applications more possibilities to make use of
5597 keys (public as well as private) handled by engines.
5600 *) Add OCSP code that comes from CertCo.
5603 *) Add VMS support for the Rijndael code.
5606 *) Added untested support for Nuron crypto accelerator.
5609 *) Add support for external cryptographic devices. This code was
5610 previously distributed separately as the "engine" branch.
5611 [Geoff Thorpe, Richard Levitte]
5613 *) Rework the filename-translation in the DSO code. It is now possible to
5614 have far greater control over how a "name" is turned into a filename
5615 depending on the operating environment and any oddities about the
5616 different shared library filenames on each system.
5619 *) Support threads on FreeBSD-elf in Configure.
5622 *) Fix for SHA1 assembly problem with MASM: it produces
5623 warnings about corrupt line number information when assembling
5624 with debugging information. This is caused by the overlapping
5626 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
5629 NCONF_get_number() has no error checking at all. As a replacement,
5630 NCONF_get_number_e() is defined (_e for "error checking") and is
5631 promoted strongly. The old NCONF_get_number is kept around for
5632 binary backward compatibility.
5633 Make it possible for methods to load from something other than a BIO,
5634 by providing a function pointer that is given a name instead of a BIO.
5635 For example, this could be used to load configuration data from an
5639 *) Fix for non blocking accept BIOs. Added new I/O special reason
5640 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
5641 with non blocking I/O was not possible because no retry code was
5642 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
5646 *) Added the beginnings of Rijndael support.
5649 *) Fix for bug in DirectoryString mask setting. Add support for
5650 X509_NAME_print_ex() in 'req' and X509_print_ex() function
5651 to allow certificate printing to more controllable, additional
5652 'certopt' option to 'x509' to allow new printing options to be
5656 *) Clean old EAY MD5 hack from e_os.h.
5659 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
5661 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
5662 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
5663 [Joe Orton, Steve Henson]
5665 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
5667 *) Fix additional bug revealed by the NISCC test suite:
5669 Stop bug triggering large recursion when presented with
5670 certain ASN.1 tags (CVE-2003-0851)
5673 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
5675 *) Fix various bugs revealed by running the NISCC test suite:
5677 Stop out of bounds reads in the ASN1 code when presented with
5678 invalid tags (CVE-2003-0543 and CVE-2003-0544).
5680 If verify callback ignores invalid public key errors don't try to check
5681 certificate signature with the NULL public key.
5685 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
5686 if the server requested one: as stated in TLS 1.0 and SSL 3.0
5690 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
5691 extra data after the compression methods not only for TLS 1.0
5692 but also for SSL 3.0 (as required by the specification).
5693 [Bodo Moeller; problem pointed out by Matthias Loepfe]
5695 *) Change X509_certificate_type() to mark the key as exported/exportable
5696 when it's 512 *bits* long, not 512 bytes.
5699 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
5701 *) Countermeasure against the Klima-Pokorny-Rosa extension of
5702 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
5703 a protocol version number mismatch like a decryption error
5704 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
5707 *) Turn on RSA blinding by default in the default implementation
5708 to avoid a timing attack. Applications that don't want it can call
5709 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
5710 They would be ill-advised to do so in most cases.
5711 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
5713 *) Change RSA blinding code so that it works when the PRNG is not
5714 seeded (in this case, the secret RSA exponent is abused as
5715 an unpredictable seed -- if it is not unpredictable, there
5716 is no point in blinding anyway). Make RSA blinding thread-safe
5717 by remembering the creator's thread ID in rsa->blinding and
5718 having all other threads use local one-time blinding factors
5719 (this requires more computation than sharing rsa->blinding, but
5720 avoids excessive locking; and if an RSA object is not shared
5721 between threads, blinding will still be very fast).
5724 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
5726 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
5727 via timing by performing a MAC computation even if incorrrect
5728 block cipher padding has been found. This is a countermeasure
5729 against active attacks where the attacker has to distinguish
5730 between bad padding and a MAC verification error. (CVE-2003-0078)
5732 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
5733 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
5734 Martin Vuagnoux (EPFL, Ilion)]
5736 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
5738 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
5739 memory from it's contents. This is done with a counter that will
5740 place alternating values in each byte. This can be used to solve
5741 two issues: 1) the removal of calls to memset() by highly optimizing
5742 compilers, and 2) cleansing with other values than 0, since those can
5743 be read through on certain media, for example a swap space on disk.
5746 *) Bugfix: client side session caching did not work with external caching,
5747 because the session->cipher setting was not restored when reloading
5748 from the external cache. This problem was masked, when
5749 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
5750 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
5753 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
5754 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
5755 [Zeev Lieber <zeev-l@yahoo.com>]
5757 *) Undo an undocumented change introduced in 0.9.6e which caused
5758 repeated calls to OpenSSL_add_all_ciphers() and
5759 OpenSSL_add_all_digests() to be ignored, even after calling
5763 *) Change the default configuration reader to deal with last line not
5764 being properly terminated.
5767 *) Change X509_NAME_cmp() so it applies the special rules on handling
5768 DN values that are of type PrintableString, as well as RDNs of type
5769 emailAddress where the value has the type ia5String.
5770 [stefank@valicert.com via Richard Levitte]
5772 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
5773 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
5774 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
5775 the bitwise-OR of the two for use by the majority of applications
5776 wanting this behaviour, and update the docs. The documented
5777 behaviour and actual behaviour were inconsistent and had been
5778 changing anyway, so this is more a bug-fix than a behavioural
5780 [Geoff Thorpe, diagnosed by Nadav Har'El]
5782 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
5783 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
5786 *) Fix initialization code race conditions in
5787 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
5788 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
5789 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
5790 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
5791 ssl2_get_cipher_by_char(),
5792 ssl3_get_cipher_by_char().
5793 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
5795 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
5796 the cached sessions are flushed, as the remove_cb() might use ex_data
5797 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
5798 (see [openssl.org #212]).
5799 [Geoff Thorpe, Lutz Jaenicke]
5801 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
5802 length, instead of the encoding length to d2i_ASN1_OBJECT.
5805 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
5807 *) [In 0.9.6g-engine release:]
5808 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
5809 [Lynn Gazis <lgazis@rainbow.com>]
5811 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
5813 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
5814 and get fix the header length calculation.
5815 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
5816 Alon Kantor <alonk@checkpoint.com> (and others),
5819 *) Use proper error handling instead of 'assertions' in buffer
5820 overflow checks added in 0.9.6e. This prevents DoS (the
5821 assertions could call abort()).
5822 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
5824 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
5826 *) Add various sanity checks to asn1_get_length() to reject
5827 the ASN1 length bytes if they exceed sizeof(long), will appear
5828 negative or the content length exceeds the length of the
5830 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5832 *) Fix cipher selection routines: ciphers without encryption had no flags
5833 for the cipher strength set and where therefore not handled correctly
5834 by the selection routines (PR #130).
5837 *) Fix EVP_dsa_sha macro.
5841 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
5842 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
5843 that was added in OpenSSL 0.9.6d.
5845 As the countermeasure turned out to be incompatible with some
5846 broken SSL implementations, the new option is part of SSL_OP_ALL.
5847 SSL_OP_ALL is usually employed when compatibility with weird SSL
5848 implementations is desired (e.g. '-bugs' option to 's_client' and
5849 's_server'), so the new option is automatically set in many
5853 *) Changes in security patch:
5855 Changes marked "(CHATS)" were sponsored by the Defense Advanced
5856 Research Projects Agency (DARPA) and Air Force Research Laboratory,
5857 Air Force Materiel Command, USAF, under agreement number
5860 *) Add various sanity checks to asn1_get_length() to reject
5861 the ASN1 length bytes if they exceed sizeof(long), will appear
5862 negative or the content length exceeds the length of the
5863 supplied buffer. (CVE-2002-0659)
5864 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
5866 *) Assertions for various potential buffer overflows, not known to
5868 [Ben Laurie (CHATS)]
5870 *) Various temporary buffers to hold ASCII versions of integers were
5871 too small for 64 bit platforms. (CVE-2002-0655)
5872 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
5874 *) Remote buffer overflow in SSL3 protocol - an attacker could
5875 supply an oversized session ID to a client. (CVE-2002-0656)
5876 [Ben Laurie (CHATS)]
5878 *) Remote buffer overflow in SSL2 protocol - an attacker could
5879 supply an oversized client master key. (CVE-2002-0656)
5880 [Ben Laurie (CHATS)]
5882 Changes between 0.9.6c and 0.9.6d [9 May 2002]
5884 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
5885 encoded as NULL) with id-dsa-with-sha1.
5886 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
5888 *) Check various X509_...() return values in apps/req.c.
5889 [Nils Larsch <nla@trustcenter.de>]
5891 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
5892 an end-of-file condition would erronously be flagged, when the CRLF
5893 was just at the end of a processed block. The bug was discovered when
5894 processing data through a buffering memory BIO handing the data to a
5895 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
5896 <ptsekov@syntrex.com> and Nedelcho Stanev.
5899 *) Implement a countermeasure against a vulnerability recently found
5900 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
5901 before application data chunks to avoid the use of known IVs
5902 with data potentially chosen by the attacker.
5905 *) Fix length checks in ssl3_get_client_hello().
5908 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
5909 to prevent ssl3_read_internal() from incorrectly assuming that
5910 ssl3_read_bytes() found application data while handshake
5911 processing was enabled when in fact s->s3->in_read_app_data was
5912 merely automatically cleared during the initial handshake.
5913 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
5915 *) Fix object definitions for Private and Enterprise: they were not
5916 recognized in their shortname (=lowercase) representation. Extend
5917 obj_dat.pl to issue an error when using undefined keywords instead
5918 of silently ignoring the problem (Svenning Sorensen
5919 <sss@sss.dnsalias.net>).
5922 *) Fix DH_generate_parameters() so that it works for 'non-standard'
5923 generators, i.e. generators other than 2 and 5. (Previously, the
5924 code did not properly initialise the 'add' and 'rem' values to
5925 BN_generate_prime().)
5927 In the new general case, we do not insist that 'generator' is
5928 actually a primitive root: This requirement is rather pointless;
5929 a generator of the order-q subgroup is just as good, if not
5933 *) Map new X509 verification errors to alerts. Discovered and submitted by
5934 Tom Wu <tom@arcot.com>.
5937 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
5938 returning non-zero before the data has been completely received
5939 when using non-blocking I/O.
5940 [Bodo Moeller; problem pointed out by John Hughes]
5942 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
5943 [Ben Laurie, Lutz Jaenicke]
5945 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
5946 Yoram Zahavi <YoramZ@gilian.com>).
5949 *) Add information about CygWin 1.3 and on, and preserve proper
5950 configuration for the versions before that.
5951 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
5953 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
5954 check whether we deal with a copy of a session and do not delete from
5955 the cache in this case. Problem reported by "Izhar Shoshani Levi"
5956 <izhar@checkpoint.com>.
5959 *) Do not store session data into the internal session cache, if it
5960 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
5961 flag is set). Proposed by Aslam <aslam@funk.com>.
5964 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
5968 *) [In 0.9.6d-engine release:]
5969 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
5970 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
5972 *) Add the configuration target linux-s390x.
5973 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
5975 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
5976 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
5977 variable as an indication that a ClientHello message has been
5978 received. As the flag value will be lost between multiple
5979 invocations of ssl3_accept when using non-blocking I/O, the
5980 function may not be aware that a handshake has actually taken
5981 place, thus preventing a new session from being added to the
5984 To avoid this problem, we now set s->new_session to 2 instead of
5985 using a local variable.
5986 [Lutz Jaenicke, Bodo Moeller]
5988 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
5989 if the SSL_R_LENGTH_MISMATCH error is detected.
5990 [Geoff Thorpe, Bodo Moeller]
5992 *) New 'shared_ldflag' column in Configure platform table.
5995 *) Fix EVP_CIPHER_mode macro.
5996 ["Dan S. Camper" <dan@bti.net>]
5998 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
5999 type, we must throw them away by setting rr->length to 0.
6000 [D P Chang <dpc@qualys.com>]
6002 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
6004 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
6005 <Dominikus.Scherkl@biodata.com>. (The previous implementation
6006 worked incorrectly for those cases where range = 10..._2 and
6007 3*range is two bits longer than range.)
6010 *) Only add signing time to PKCS7 structures if it is not already
6014 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
6015 OBJ_ld_ce should be OBJ_id_ce.
6016 Also some ip-pda OIDs in crypto/objects/objects.txt were
6017 incorrect (cf. RFC 3039).
6018 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
6020 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
6021 returns early because it has nothing to do.
6022 [Andy Schneider <andy.schneider@bjss.co.uk>]
6024 *) [In 0.9.6c-engine release:]
6025 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
6026 [Andy Schneider <andy.schneider@bjss.co.uk>]
6028 *) [In 0.9.6c-engine release:]
6029 Add support for Cryptographic Appliance's keyserver technology.
6030 (Use engine 'keyclient')
6031 [Cryptographic Appliances and Geoff Thorpe]
6033 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
6034 is called via tools/c89.sh because arguments have to be
6035 rearranged (all '-L' options must appear before the first object
6037 [Richard Shapiro <rshapiro@abinitio.com>]
6039 *) [In 0.9.6c-engine release:]
6040 Add support for Broadcom crypto accelerator cards, backported
6042 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
6044 *) [In 0.9.6c-engine release:]
6045 Add support for SureWare crypto accelerator cards from
6046 Baltimore Technologies. (Use engine 'sureware')
6047 [Baltimore Technologies and Mark Cox]
6049 *) [In 0.9.6c-engine release:]
6050 Add support for crypto accelerator cards from Accelerated
6051 Encryption Processing, www.aep.ie. (Use engine 'aep')
6052 [AEP Inc. and Mark Cox]
6054 *) Add a configuration entry for gcc on UnixWare.
6055 [Gary Benson <gbenson@redhat.com>]
6057 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
6058 messages are stored in a single piece (fixed-length part and
6059 variable-length part combined) and fix various bugs found on the way.
6062 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
6063 instead. BIO_gethostbyname() does not know what timeouts are
6064 appropriate, so entries would stay in cache even when they have
6066 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
6068 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
6069 faced with a pathologically small ClientHello fragment that does
6070 not contain client_version: Instead of aborting with an error,
6071 simply choose the highest available protocol version (i.e.,
6072 TLS 1.0 unless it is disabled). In practice, ClientHello
6073 messages are never sent like this, but this change gives us
6074 strictly correct behaviour at least for TLS.
6077 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
6078 never resets s->method to s->ctx->method when called from within
6079 one of the SSL handshake functions.
6080 [Bodo Moeller; problem pointed out by Niko Baric]
6082 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
6083 (sent using the client's version number) if client_version is
6084 smaller than the protocol version in use. Also change
6085 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
6086 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
6087 the client will at least see that alert.
6090 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
6094 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
6095 client receives HelloRequest while in a handshake.
6096 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
6098 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
6099 should end in 'break', not 'goto end' which circuments various
6100 cleanups done in state SSL_ST_OK. But session related stuff
6101 must be disabled for SSL_ST_OK in the case that we just sent a
6104 Also avoid some overhead by not calling ssl_init_wbio_buffer()
6105 before just sending a HelloRequest.
6106 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
6108 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
6109 reveal whether illegal block cipher padding was found or a MAC
6110 verification error occured. (Neither SSLerr() codes nor alerts
6111 are directly visible to potential attackers, but the information
6112 may leak via logfiles.)
6114 Similar changes are not required for the SSL 2.0 implementation
6115 because the number of padding bytes is sent in clear for SSL 2.0,
6116 and the extra bytes are just ignored. However ssl/s2_pkt.c
6117 failed to verify that the purported number of padding bytes is in
6121 *) Add OpenUNIX-8 support including shared libraries
6122 (Boyd Lynn Gerber <gerberb@zenez.com>).
6125 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
6126 'wristwatch attack' using huge encoding parameters (cf.
6127 James H. Manger's CRYPTO 2001 paper). Note that the
6128 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
6129 encoding parameters and hence was not vulnerable.
6132 *) BN_sqr() bug fix.
6133 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
6135 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
6136 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
6137 followed by modular reduction.
6138 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
6140 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
6141 equivalent based on BN_pseudo_rand() instead of BN_rand().
6144 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
6145 This function was broken, as the check for a new client hello message
6146 to handle SGC did not allow these large messages.
6147 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
6150 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
6153 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
6154 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
6157 *) Rework the configuration and shared library support for Tru64 Unix.
6158 The configuration part makes use of modern compiler features and
6159 still retains old compiler behavior for those that run older versions
6160 of the OS. The shared library support part includes a variant that
6161 uses the RPATH feature, and is available through the special
6162 configuration target "alpha-cc-rpath", which will never be selected
6164 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
6166 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
6167 with the same message size as in ssl3_get_certificate_request().
6168 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
6169 messages might inadvertently be reject as too long.
6170 [Petr Lampa <lampa@fee.vutbr.cz>]
6172 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
6175 *) Modified SSL library such that the verify_callback that has been set
6176 specificly for an SSL object with SSL_set_verify() is actually being
6177 used. Before the change, a verify_callback set with this function was
6178 ignored and the verify_callback() set in the SSL_CTX at the time of
6179 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
6180 to allow the necessary settings.
6183 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
6184 explicitly to NULL, as at least on Solaris 8 this seems not always to be
6185 done automatically (in contradiction to the requirements of the C
6186 standard). This made problems when used from OpenSSH.
6189 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
6190 dh->length and always used
6192 BN_rand_range(priv_key, dh->p).
6194 BN_rand_range() is not necessary for Diffie-Hellman, and this
6195 specific range makes Diffie-Hellman unnecessarily inefficient if
6196 dh->length (recommended exponent length) is much smaller than the
6197 length of dh->p. We could use BN_rand_range() if the order of
6198 the subgroup was stored in the DH structure, but we only have
6203 BN_rand(priv_key, l, ...)
6205 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
6211 RSA_eay_public_encrypt
6212 RSA_eay_private_decrypt
6213 RSA_eay_private_encrypt (signing)
6214 RSA_eay_public_decrypt (signature verification)
6216 (default implementations for RSA_public_encrypt,
6217 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
6218 always reject numbers >= n.
6221 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
6222 to synchronize access to 'locking_thread'. This is necessary on
6223 systems where access to 'locking_thread' (an 'unsigned long'
6224 variable) is not atomic.
6227 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
6228 *before* setting the 'crypto_lock_rand' flag. The previous code had
6229 a race condition if 0 is a valid thread ID.
6230 [Travis Vitek <vitek@roguewave.com>]
6232 *) Add support for shared libraries under Irix.
6233 [Albert Chin-A-Young <china@thewrittenword.com>]
6235 *) Add configuration option to build on Linux on both big-endian and
6237 [Ralf Baechle <ralf@uni-koblenz.de>]
6239 *) Add the possibility to create shared libraries on HP-UX.
6242 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
6244 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
6245 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
6246 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
6247 PRNG state recovery was possible based on the output of
6248 one PRNG request appropriately sized to gain knowledge on
6249 'md' followed by enough consecutive 1-byte PRNG requests
6250 to traverse all of 'state'.
6252 1. When updating 'md_local' (the current thread's copy of 'md')
6253 during PRNG output generation, hash all of the previous
6254 'md_local' value, not just the half used for PRNG output.
6256 2. Make the number of bytes from 'state' included into the hash
6257 independent from the number of PRNG bytes requested.
6259 The first measure alone would be sufficient to avoid
6260 Markku-Juhani's attack. (Actually it had never occurred
6261 to me that the half of 'md_local' used for chaining was the
6262 half from which PRNG output bytes were taken -- I had always
6263 assumed that the secret half would be used.) The second
6264 measure makes sure that additional data from 'state' is never
6265 mixed into 'md_local' in small portions; this heuristically
6266 further strengthens the PRNG.
6269 *) Fix crypto/bn/asm/mips3.s.
6272 *) When only the key is given to "enc", the IV is undefined. Print out
6273 an error message in this case.
6276 *) Handle special case when X509_NAME is empty in X509 printing routines.
6279 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
6280 positive and less than q.
6283 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
6284 used: it isn't thread safe and the add_lock_callback should handle
6286 [Paul Rose <Paul.Rose@bridge.com>]
6288 *) Verify that incoming data obeys the block size in
6289 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
6293 [Ulf Möller, Bodo Möller]
6295 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
6296 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
6297 when fixing the server behaviour for backwards-compatible 'client
6298 hello' messages. (Note that the attack is impractical against
6299 SSL 3.0 and TLS 1.0 anyway because length and version checking
6300 means that the probability of guessing a valid ciphertext is
6301 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
6304 Before 0.9.5, the countermeasure (hide the error by generating a
6305 random 'decryption result') did not work properly because
6306 ERR_clear_error() was missing, meaning that SSL_get_error() would
6307 detect the supposedly ignored error.
6309 Both problems are now fixed.
6312 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
6313 (previously it was 1024).
6316 *) Fix for compatibility mode trust settings: ignore trust settings
6317 unless some valid trust or reject settings are present.
6320 *) Fix for blowfish EVP: its a variable length cipher.
6323 *) Fix various bugs related to DSA S/MIME verification. Handle missing
6324 parameters in DSA public key structures and return an error in the
6325 DSA routines if parameters are absent.
6328 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
6329 in the current directory if neither $RANDFILE nor $HOME was set.
6330 RAND_file_name() in 0.9.6a returned NULL in this case. This has
6331 caused some confusion to Windows users who haven't defined $HOME.
6332 Thus RAND_file_name() is changed again: e_os.h can define a
6333 DEFAULT_HOME, which will be used if $HOME is not set.
6334 For Windows, we use "C:"; on other platforms, we still require
6335 environment variables.
6337 *) Move 'if (!initialized) RAND_poll()' into regions protected by
6338 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
6339 having multiple threads call RAND_poll() concurrently.
6342 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
6343 combination of a flag and a thread ID variable.
6344 Otherwise while one thread is in ssleay_rand_bytes (which sets the
6345 flag), *other* threads can enter ssleay_add_bytes without obeying
6346 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
6347 that they do not hold after the first thread unsets add_do_not_lock).
6350 *) Change bctest again: '-x' expressions are not available in all
6354 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
6356 *) Fix a couple of memory leaks in PKCS7_dataDecode()
6357 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
6359 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
6360 the default extension for executables, if any. Also, make the perl
6361 scripts that use symlink() to test if it really exists and use "cp"
6362 if it doesn't. All this made OpenSSL compilable and installable in
6366 *) Fix for asn1_GetSequence() for indefinite length constructed data.
6367 If SEQUENCE is length is indefinite just set c->slen to the total
6368 amount of data available.
6369 [Steve Henson, reported by shige@FreeBSD.org]
6370 [This change does not apply to 0.9.7.]
6372 *) Change bctest to avoid here-documents inside command substitution
6373 (workaround for FreeBSD /bin/sh bug).
6374 For compatibility with Ultrix, avoid shell functions (introduced
6375 in the bctest version that searches along $PATH).
6378 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
6379 with des_encrypt() defined on some operating systems, like Solaris
6383 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
6384 On the Importance of Eliminating Errors in Cryptographic
6385 Computations, J. Cryptology 14 (2001) 2, 101-119,
6386 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
6389 *) MIPS assembler BIGNUM division bug fix.
6392 *) Disabled incorrect Alpha assembler code.
6395 *) Fix PKCS#7 decode routines so they correctly update the length
6396 after reading an EOC for the EXPLICIT tag.
6398 [This change does not apply to 0.9.7.]
6400 *) Fix bug in PKCS#12 key generation routines. This was triggered
6401 if a 3DES key was generated with a 0 initial byte. Include
6402 PKCS12_BROKEN_KEYGEN compilation option to retain the old
6403 (but broken) behaviour.
6406 *) Enhance bctest to search for a working bc along $PATH and print
6408 [Tim Rice <tim@multitalents.net> via Richard Levitte]
6410 *) Fix memory leaks in err.c: free err_data string if necessary;
6411 don't write to the wrong index in ERR_set_error_data.
6414 *) Implement ssl23_peek (analogous to ssl23_read), which previously
6418 *) Replace rdtsc with _emit statements for VC++ version 5.
6419 [Jeremy Cooper <jeremy@baymoo.org>]
6421 *) Make it possible to reuse SSLv2 sessions.
6424 *) In copy_email() check for >= 0 as a return value for
6425 X509_NAME_get_index_by_NID() since 0 is a valid index.
6426 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
6428 *) Avoid coredump with unsupported or invalid public keys by checking if
6429 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
6430 PKCS7_verify() fails with non detached data.
6433 *) Don't use getenv in library functions when run as setuid/setgid.
6434 New function OPENSSL_issetugid().
6437 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
6438 due to incorrect handling of multi-threading:
6440 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
6442 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
6444 3. Count how many times MemCheck_off() has been called so that
6445 nested use can be treated correctly. This also avoids
6446 inband-signalling in the previous code (which relied on the
6447 assumption that thread ID 0 is impossible).
6450 *) Add "-rand" option also to s_client and s_server.
6453 *) Fix CPU detection on Irix 6.x.
6454 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
6455 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6457 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
6460 [This change does not apply to 0.9.7.]
6462 *) Use the cached encoding of an X509_NAME structure rather than
6463 copying it. This is apparently the reason for the libsafe "errors"
6464 but the code is actually correct.
6467 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
6468 Bleichenbacher's DSA attack.
6469 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
6470 to be set and top=0 forces the highest bit to be set; top=-1 is new
6471 and leaves the highest bit random.
6472 [Ulf Moeller, Bodo Moeller]
6474 *) In the NCONF_...-based implementations for CONF_... queries
6475 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
6476 a temporary CONF structure with the data component set to NULL
6477 (which gives segmentation faults in lh_retrieve).
6478 Instead, use NULL for the CONF pointer in CONF_get_string and
6479 CONF_get_number (which may use environment variables) and directly
6480 return NULL from CONF_get_section.
6483 *) Fix potential buffer overrun for EBCDIC.
6486 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
6487 keyUsage if basicConstraints absent for a CA.
6490 *) Make SMIME_write_PKCS7() write mail header values with a format that
6491 is more generally accepted (no spaces before the semicolon), since
6492 some programs can't parse those values properly otherwise. Also make
6493 sure BIO's that break lines after each write do not create invalid
6497 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
6498 macros previously used would not encode an empty SEQUENCE OF
6499 and break the signature.
6501 [This change does not apply to 0.9.7.]
6503 *) Zero the premaster secret after deriving the master secret in
6507 *) Add some EVP_add_digest_alias registrations (as found in
6508 OpenSSL_add_all_digests()) to SSL_library_init()
6509 aka OpenSSL_add_ssl_algorithms(). This provides improved
6510 compatibility with peers using X.509 certificates
6511 with unconventional AlgorithmIdentifier OIDs.
6514 *) Fix for Irix with NO_ASM.
6515 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
6517 *) ./config script fixes.
6518 [Ulf Moeller, Richard Levitte]
6520 *) Fix 'openssl passwd -1'.
6523 *) Change PKCS12_key_gen_asc() so it can cope with non null
6524 terminated strings whose length is passed in the passlen
6525 parameter, for example from PEM callbacks. This was done
6526 by adding an extra length parameter to asc2uni().
6527 [Steve Henson, reported by <oddissey@samsung.co.kr>]
6529 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
6530 call failed, free the DSA structure.
6533 *) Fix to uni2asc() to cope with zero length Unicode strings.
6534 These are present in some PKCS#12 files.
6537 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
6538 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
6539 when writing a 32767 byte record.
6540 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
6542 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
6543 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
6545 (RSA objects have a reference count access to which is protected
6546 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
6547 so they are meant to be shared between threads.)
6548 [Bodo Moeller, Geoff Thorpe; original patch submitted by
6549 "Reddie, Steven" <Steven.Reddie@ca.com>]
6551 *) Fix a deadlock in CRYPTO_mem_leaks().
6554 *) Use better test patterns in bntest.
6557 *) rand_win.c fix for Borland C.
6560 *) BN_rshift bugfix for n == 0.
6563 *) Add a 'bctest' script that checks for some known 'bc' bugs
6564 so that 'make test' does not abort just because 'bc' is broken.
6567 *) Store verify_result within SSL_SESSION also for client side to
6568 avoid potential security hole. (Re-used sessions on the client side
6569 always resulted in verify_result==X509_V_OK, not using the original
6570 result of the server certificate verification.)
6573 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
6574 SSL3_RT_APPLICATION_DATA, return 0.
6575 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
6579 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
6580 releases, have been re-implemented by renaming the previous
6581 implementations of ssl2_read and ssl3_read to ssl2_read_internal
6582 and ssl3_read_internal, respectively, and adding 'peek' parameters
6583 to them. The new ssl[23]_{read,peek} functions are calls to
6584 ssl[23]_read_internal with the 'peek' flag set appropriately.
6585 A 'peek' parameter has also been added to ssl3_read_bytes, which
6586 does the actual work for ssl3_read_internal.
6589 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
6590 the method-specific "init()" handler. Also clean up ex_data after
6591 calling the method-specific "finish()" handler. Previously, this was
6592 happening the other way round.
6595 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
6596 The previous value, 12, was not always sufficient for BN_mod_exp().
6599 *) Make sure that shared libraries get the internal name engine with
6600 the full version number and not just 0. This should mark the
6601 shared libraries as not backward compatible. Of course, this should
6602 be changed again when we can guarantee backward binary compatibility.
6605 *) Fix typo in get_cert_by_subject() in by_dir.c
6606 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
6608 *) Rework the system to generate shared libraries:
6610 - Make note of the expected extension for the shared libraries and
6611 if there is a need for symbolic links from for example libcrypto.so.0
6612 to libcrypto.so.0.9.7. There is extended info in Configure for
6615 - Make as few rebuilds of the shared libraries as possible.
6617 - Still avoid linking the OpenSSL programs with the shared libraries.
6619 - When installing, install the shared libraries separately from the
6623 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
6625 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
6626 and not in SSL_clear because the latter is also used by the
6627 accept/connect functions; previously, the settings made by
6628 SSL_set_read_ahead would be lost during the handshake.
6629 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
6631 *) Correct util/mkdef.pl to be selective about disabled algorithms.
6632 Previously, it would create entries for disableed algorithms no
6636 *) Added several new manual pages for SSL_* function.
6639 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
6641 *) In ssl23_get_client_hello, generate an error message when faced
6642 with an initial SSL 3.0/TLS record that is too small to contain the
6643 first two bytes of the ClientHello message, i.e. client_version.
6644 (Note that this is a pathologic case that probably has never happened
6645 in real life.) The previous approach was to use the version number
6646 from the record header as a substitute; but our protocol choice
6647 should not depend on that one because it is not authenticated
6648 by the Finished messages.
6651 *) More robust randomness gathering functions for Windows.
6652 [Jeffrey Altman <jaltman@columbia.edu>]
6654 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
6655 not set then we don't setup the error code for issuer check errors
6656 to avoid possibly overwriting other errors which the callback does
6657 handle. If an application does set the flag then we assume it knows
6658 what it is doing and can handle the new informational codes
6662 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
6663 a general "ANY" type, as such it should be able to decode anything
6664 including tagged types. However it didn't check the class so it would
6665 wrongly interpret tagged types in the same way as their universal
6666 counterpart and unknown types were just rejected. Changed so that the
6667 tagged and unknown types are handled in the same way as a SEQUENCE:
6668 that is the encoding is stored intact. There is also a new type
6669 "V_ASN1_OTHER" which is used when the class is not universal, in this
6670 case we have no idea what the actual type is so we just lump them all
6674 *) On VMS, stdout may very well lead to a file that is written to
6675 in a record-oriented fashion. That means that every write() will
6676 write a separate record, which will be read separately by the
6677 programs trying to read from it. This can be very confusing.
6679 The solution is to put a BIO filter in the way that will buffer
6680 text until a linefeed is reached, and then write everything a
6681 line at a time, so every record written will be an actual line,
6682 not chunks of lines and not (usually doesn't happen, but I've
6683 seen it once) several lines in one record. BIO_f_linebuffer() is
6686 Currently, it's a VMS-only method, because that's where it has
6687 been tested well enough.
6690 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
6691 it can return incorrect results.
6692 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
6693 but it was in 0.9.6-beta[12].)
6696 *) Disable the check for content being present when verifying detached
6697 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
6698 include zero length content when signing messages.
6701 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
6702 BIO_ctrl (for BIO pairs).
6705 *) Add DSO method for VMS.
6708 *) Bug fix: Montgomery multiplication could produce results with the
6712 *) Add RPM specification openssl.spec and modify it to build three
6713 packages. The default package contains applications, application
6714 documentation and run-time libraries. The devel package contains
6715 include files, static libraries and function documentation. The
6716 doc package contains the contents of the doc directory. The original
6717 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
6720 *) Add a large number of documentation files for many SSL routines.
6721 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6723 *) Add a configuration entry for Sony News 4.
6724 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
6726 *) Don't set the two most significant bits to one when generating a
6727 random number < q in the DSA library.
6730 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
6731 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
6732 the underlying transport is blocking) if a handshake took place.
6733 (The default behaviour is needed by applications such as s_client
6734 and s_server that use select() to determine when to use SSL_read;
6735 but for applications that know in advance when to expect data, it
6736 just makes things more complicated.)
6739 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
6743 *) Add a few more EBCDIC conditionals that make `req' and `x509'
6744 work better on such systems.
6745 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
6747 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
6748 Update PKCS12_parse() so it copies the friendlyName and the
6749 keyid to the certificates aux info.
6752 *) Fix bug in PKCS7_verify() which caused an infinite loop
6753 if there was more than one signature.
6754 [Sven Uszpelkat <su@celocom.de>]
6756 *) Major change in util/mkdef.pl to include extra information
6757 about each symbol, as well as presentig variables as well
6758 as functions. This change means that there's n more need
6759 to rebuild the .num files when some algorithms are excluded.
6762 *) Allow the verify time to be set by an application,
6763 rather than always using the current time.
6766 *) Phase 2 verify code reorganisation. The certificate
6767 verify code now looks up an issuer certificate by a
6768 number of criteria: subject name, authority key id
6769 and key usage. It also verifies self signed certificates
6770 by the same criteria. The main comparison function is
6771 X509_check_issued() which performs these checks.
6773 Lot of changes were necessary in order to support this
6774 without completely rewriting the lookup code.
6776 Authority and subject key identifier are now cached.
6778 The LHASH 'certs' is X509_STORE has now been replaced
6779 by a STACK_OF(X509_OBJECT). This is mainly because an
6780 LHASH can't store or retrieve multiple objects with
6781 the same hash value.
6783 As a result various functions (which were all internal
6784 use only) have changed to handle the new X509_STORE
6785 structure. This will break anything that messed round
6786 with X509_STORE internally.
6788 The functions X509_STORE_add_cert() now checks for an
6789 exact match, rather than just subject name.
6791 The X509_STORE API doesn't directly support the retrieval
6792 of multiple certificates matching a given criteria, however
6793 this can be worked round by performing a lookup first
6794 (which will fill the cache with candidate certificates)
6795 and then examining the cache for matches. This is probably
6796 the best we can do without throwing out X509_LOOKUP
6797 entirely (maybe later...).
6799 The X509_VERIFY_CTX structure has been enhanced considerably.
6801 All certificate lookup operations now go via a get_issuer()
6802 callback. Although this currently uses an X509_STORE it
6803 can be replaced by custom lookups. This is a simple way
6804 to bypass the X509_STORE hackery necessary to make this
6805 work and makes it possible to use more efficient techniques
6806 in future. A very simple version which uses a simple
6807 STACK for its trusted certificate store is also provided
6808 using X509_STORE_CTX_trusted_stack().
6810 The verify_cb() and verify() callbacks now have equivalents
6811 in the X509_STORE_CTX structure.
6813 X509_STORE_CTX also has a 'flags' field which can be used
6814 to customise the verify behaviour.
6817 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
6818 excludes S/MIME capabilities.
6821 *) When a certificate request is read in keep a copy of the
6822 original encoding of the signed data and use it when outputing
6823 again. Signatures then use the original encoding rather than
6824 a decoded, encoded version which may cause problems if the
6825 request is improperly encoded.
6828 *) For consistency with other BIO_puts implementations, call
6829 buffer_write(b, ...) directly in buffer_puts instead of calling
6832 In BIO_puts, increment b->num_write as in BIO_write.
6833 [Peter.Sylvester@EdelWeb.fr]
6835 *) Fix BN_mul_word for the case where the word is 0. (We have to use
6836 BN_zero, we may not return a BIGNUM with an array consisting of
6840 *) Avoid calling abort() from within the library when problems are
6841 detected, except if preprocessor symbols have been defined
6842 (such as REF_CHECK, BN_DEBUG etc.).
6845 *) New openssl application 'rsautl'. This utility can be
6846 used for low level RSA operations. DER public key
6847 BIO/fp routines also added.
6850 *) New Configure entry and patches for compiling on QNX 4.
6851 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
6853 *) A demo state-machine implementation was sponsored by
6854 Nuron (http://www.nuron.com/) and is now available in
6855 demos/state_machine.
6858 *) New options added to the 'dgst' utility for signature
6859 generation and verification.
6862 *) Unrecognized PKCS#7 content types are now handled via a
6863 catch all ASN1_TYPE structure. This allows unsupported
6864 types to be stored as a "blob" and an application can
6865 encode and decode it manually.
6868 *) Fix various signed/unsigned issues to make a_strex.c
6870 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
6872 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
6873 length if passed a buffer. ASN1_INTEGER_to_BN failed
6874 if passed a NULL BN and its argument was negative.
6875 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
6877 *) Modification to PKCS#7 encoding routines to output definite
6878 length encoding. Since currently the whole structures are in
6879 memory there's not real point in using indefinite length
6880 constructed encoding. However if OpenSSL is compiled with
6881 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
6884 *) Added BIO_vprintf() and BIO_vsnprintf().
6887 *) Added more prefixes to parse for in the the strings written
6888 through a logging bio, to cover all the levels that are available
6889 through syslog. The prefixes are now:
6891 PANIC, EMERG, EMR => LOG_EMERG
6892 ALERT, ALR => LOG_ALERT
6893 CRIT, CRI => LOG_CRIT
6894 ERROR, ERR => LOG_ERR
6895 WARNING, WARN, WAR => LOG_WARNING
6896 NOTICE, NOTE, NOT => LOG_NOTICE
6897 INFO, INF => LOG_INFO
6898 DEBUG, DBG => LOG_DEBUG
6900 and as before, if none of those prefixes are present at the
6901 beginning of the string, LOG_ERR is chosen.
6903 On Win32, the LOG_* levels are mapped according to this:
6905 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
6906 LOG_WARNING => EVENTLOG_WARNING_TYPE
6907 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
6911 *) Made it possible to reconfigure with just the configuration
6912 argument "reconf" or "reconfigure". The command line arguments
6913 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
6914 and are retrieved from there when reconfiguring.
6918 [Assar Westerlund <assar@sics.se>, Richard Levitte]
6920 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
6923 *) The obj_dat.pl script was messing up the sorting of object
6924 names. The reason was that it compared the quoted version
6925 of strings as a result "OCSP" > "OCSP Signing" because
6926 " > SPACE. Changed script to store unquoted versions of
6927 names and add quotes on output. It was also omitting some
6928 names from the lookup table if they were given a default
6929 value (that is if SN is missing it is given the same
6930 value as LN and vice versa), these are now added on the
6931 grounds that if an object has a name we should be able to
6932 look it up. Finally added warning output when duplicate
6933 short or long names are found.
6936 *) Changes needed for Tandem NSK.
6937 [Scott Uroff <scott@xypro.com>]
6939 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
6940 RSA_padding_check_SSLv23(), special padding was never detected
6941 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
6942 version rollback attacks was not effective.
6944 In s23_clnt.c, don't use special rollback-attack detection padding
6945 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
6946 client; similarly, in s23_srvr.c, don't do the rollback check if
6947 SSL 2.0 is the only protocol enabled in the server.
6950 *) Make it possible to get hexdumps of unprintable data with 'openssl
6951 asn1parse'. By implication, the functions ASN1_parse_dump() and
6952 BIO_dump_indent() are added.
6955 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
6956 these print out strings and name structures based on various
6957 flags including RFC2253 support and proper handling of
6958 multibyte characters. Added options to the 'x509' utility
6959 to allow the various flags to be set.
6962 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
6963 Also change the functions X509_cmp_current_time() and
6964 X509_gmtime_adj() work with an ASN1_TIME structure,
6965 this will enable certificates using GeneralizedTime in validity
6966 dates to be checked.
6969 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
6970 negative public key encodings) on by default,
6971 NO_NEG_PUBKEY_BUG can be set to disable it.
6974 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
6975 content octets. An i2c_ASN1_OBJECT is unnecessary because
6976 the encoding can be trivially obtained from the structure.
6979 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
6980 not read locks (CRYPTO_r_[un]lock).
6983 *) A first attempt at creating official support for shared
6984 libraries through configuration. I've kept it so the
6985 default is static libraries only, and the OpenSSL programs
6986 are always statically linked for now, but there are
6987 preparations for dynamic linking in place.
6988 This has been tested on Linux and Tru64.
6991 *) Randomness polling function for Win9x, as described in:
6992 Peter Gutmann, Software Generation of Practically Strong
6996 *) Fix so PRNG is seeded in req if using an already existing
7000 *) New options to smime application. -inform and -outform
7001 allow alternative formats for the S/MIME message including
7002 PEM and DER. The -content option allows the content to be
7003 specified separately. This should allow things like Netscape
7004 form signing output easier to verify.
7007 *) Fix the ASN1 encoding of tags using the 'long form'.
7010 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
7011 STRING types. These convert content octets to and from the
7012 underlying type. The actual tag and length octets are
7013 already assumed to have been read in and checked. These
7014 are needed because all other string types have virtually
7015 identical handling apart from the tag. By having versions
7016 of the ASN1 functions that just operate on content octets
7017 IMPLICIT tagging can be handled properly. It also allows
7018 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
7019 and ASN1_INTEGER are identical apart from the tag.
7022 *) Change the handling of OID objects as follows:
7024 - New object identifiers are inserted in objects.txt, following
7025 the syntax given in objects.README.
7026 - objects.pl is used to process obj_mac.num and create a new
7028 - obj_dat.pl is used to create a new obj_dat.h, using the data in
7031 This is currently kind of a hack, and the perl code in objects.pl
7032 isn't very elegant, but it works as I intended. The simplest way
7033 to check that it worked correctly is to look in obj_dat.h and
7034 check the array nid_objs and make sure the objects haven't moved
7035 around (this is important!). Additions are OK, as well as
7036 consistent name changes.
7039 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
7042 *) Addition of the command line parameter '-rand file' to 'openssl req'.
7043 The given file adds to whatever has already been seeded into the
7044 random pool through the RANDFILE configuration file option or
7045 environment variable, or the default random state file.
7048 *) mkstack.pl now sorts each macro group into lexical order.
7049 Previously the output order depended on the order the files
7050 appeared in the directory, resulting in needless rewriting
7054 *) Patches to make OpenSSL compile under Win32 again. Mostly
7055 work arounds for the VC++ problem that it treats func() as
7056 func(void). Also stripped out the parts of mkdef.pl that
7057 added extra typesafe functions: these no longer exist.
7060 *) Reorganisation of the stack code. The macros are now all
7061 collected in safestack.h . Each macro is defined in terms of
7062 a "stack macro" of the form SKM_<name>(type, a, b). The
7063 DEBUG_SAFESTACK is now handled in terms of function casts,
7064 this has the advantage of retaining type safety without the
7065 use of additional functions. If DEBUG_SAFESTACK is not defined
7066 then the non typesafe macros are used instead. Also modified the
7067 mkstack.pl script to handle the new form. Needs testing to see
7068 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
7069 the default if no major problems. Similar behaviour for ASN1_SET_OF
7070 and PKCS12_STACK_OF.
7073 *) When some versions of IIS use the 'NET' form of private key the
7074 key derivation algorithm is different. Normally MD5(password) is
7075 used as a 128 bit RC4 key. In the modified case
7076 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
7077 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
7078 as the old Netscape_RSA functions except they have an additional
7079 'sgckey' parameter which uses the modified algorithm. Also added
7080 an -sgckey command line option to the rsa utility. Thanks to
7081 Adrian Peck <bertie@ncipher.com> for posting details of the modified
7082 algorithm to openssl-dev.
7085 *) The evp_local.h macros were using 'c.##kname' which resulted in
7086 invalid expansion on some systems (SCO 5.0.5 for example).
7087 Corrected to 'c.kname'.
7088 [Phillip Porch <root@theporch.com>]
7090 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
7091 a STACK of email addresses from a certificate or request, these look
7092 in the subject name and the subject alternative name extensions and
7093 omit any duplicate addresses.
7096 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
7097 This makes DSA verification about 2 % faster.
7100 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
7101 (meaning that now 2^5 values will be precomputed, which is only 4 KB
7102 plus overhead for 1024 bit moduli).
7103 This makes exponentiations about 0.5 % faster for 1024 bit
7104 exponents (as measured by "openssl speed rsa2048").
7107 *) Rename memory handling macros to avoid conflicts with other
7109 Malloc => OPENSSL_malloc
7110 Malloc_locked => OPENSSL_malloc_locked
7111 Realloc => OPENSSL_realloc
7112 Free => OPENSSL_free
7115 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
7116 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
7119 *) CygWin32 support.
7120 [John Jarvie <jjarvie@newsguy.com>]
7122 *) The type-safe stack code has been rejigged. It is now only compiled
7123 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
7124 by default all type-specific stack functions are "#define"d back to
7125 standard stack functions. This results in more streamlined output
7126 but retains the type-safety checking possibilities of the original
7130 *) The STACK code has been cleaned up, and certain type declarations
7131 that didn't make a lot of sense have been brought in line. This has
7132 also involved a cleanup of sorts in safestack.h to more correctly
7133 map type-safe stack functions onto their plain stack counterparts.
7134 This work has also resulted in a variety of "const"ifications of
7135 lots of the code, especially "_cmp" operations which should normally
7136 be prototyped with "const" parameters anyway.
7139 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
7140 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
7141 (The PRNG state consists of two parts, the large pool 'state' and 'md',
7142 where all of 'md' is used each time the PRNG is used, but 'state'
7143 is used only indexed by a cyclic counter. As entropy may not be
7144 well distributed from the beginning, 'md' is important as a
7145 chaining variable. However, the output function chains only half
7146 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
7147 all of 'md', and seeding with STATE_SIZE dummy bytes will result
7148 in all of 'state' being rewritten, with the new values depending
7149 on virtually all of 'md'. This overcomes the 80 bit limitation.)
7152 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
7153 the handshake is continued after ssl_verify_cert_chain();
7154 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
7155 can lead to 'unexplainable' connection aborts later.
7156 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
7158 *) Major EVP API cipher revision.
7159 Add hooks for extra EVP features. This allows various cipher
7160 parameters to be set in the EVP interface. Support added for variable
7161 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
7162 setting of RC2 and RC5 parameters.
7164 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
7167 Remove lots of duplicated code from the EVP library. For example *every*
7168 cipher init() function handles the 'iv' in the same way according to the
7169 cipher mode. They also all do nothing if the 'key' parameter is NULL and
7170 for CFB and OFB modes they zero ctx->num.
7172 New functionality allows removal of S/MIME code RC2 hack.
7174 Most of the routines have the same form and so can be declared in terms
7177 By shifting this to the top level EVP_CipherInit() it can be removed from
7178 all individual ciphers. If the cipher wants to handle IVs or keys
7179 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
7182 Change lots of functions like EVP_EncryptUpdate() to now return a
7183 value: although software versions of the algorithms cannot fail
7184 any installed hardware versions can.
7187 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
7188 this option is set, tolerate broken clients that send the negotiated
7189 protocol version number instead of the requested protocol version
7193 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
7194 i.e. non-zero for export ciphersuites, zero otherwise.
7195 Previous versions had this flag inverted, inconsistent with
7196 rsa_tmp_cb (..._TMP_RSA_CB).
7197 [Bodo Moeller; problem reported by Amit Chopra]
7199 *) Add missing DSA library text string. Work around for some IIS
7200 key files with invalid SEQUENCE encoding.
7203 *) Add a document (doc/standards.txt) that list all kinds of standards
7204 and so on that are implemented in OpenSSL.
7207 *) Enhance c_rehash script. Old version would mishandle certificates
7208 with the same subject name hash and wouldn't handle CRLs at all.
7209 Added -fingerprint option to crl utility, to support new c_rehash
7213 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
7216 *) Fix for SSL server purpose checking. Server checking was
7217 rejecting certificates which had extended key usage present
7218 but no ssl client purpose.
7219 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
7221 *) Make PKCS#12 code work with no password. The PKCS#12 spec
7222 is a little unclear about how a blank password is handled.
7223 Since the password in encoded as a BMPString with terminating
7224 double NULL a zero length password would end up as just the
7225 double NULL. However no password at all is different and is
7226 handled differently in the PKCS#12 key generation code. NS
7227 treats a blank password as zero length. MSIE treats it as no
7228 password on export: but it will try both on import. We now do
7229 the same: PKCS12_parse() tries zero length and no password if
7230 the password is set to "" or NULL (NULL is now a valid password:
7231 it wasn't before) as does the pkcs12 application.
7234 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
7235 perror when PEM_read_bio_X509_REQ fails, the error message must
7236 be obtained from the error queue.
7239 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
7240 it in ERR_remove_state if appropriate, and change ERR_get_state
7241 accordingly to avoid race conditions (this is necessary because
7242 thread_hash is no longer constant once set).
7245 *) Bugfix for linux-elf makefile.one.
7248 *) RSA_get_default_method() will now cause a default
7249 RSA_METHOD to be chosen if one doesn't exist already.
7250 Previously this was only set during a call to RSA_new()
7251 or RSA_new_method(NULL) meaning it was possible for
7252 RSA_get_default_method() to return NULL.
7255 *) Added native name translation to the existing DSO code
7256 that will convert (if the flag to do so is set) filenames
7257 that are sufficiently small and have no path information
7258 into a canonical native form. Eg. "blah" converted to
7259 "libblah.so" or "blah.dll" etc.
7262 *) New function ERR_error_string_n(e, buf, len) which is like
7263 ERR_error_string(e, buf), but writes at most 'len' bytes
7264 including the 0 terminator. For ERR_error_string_n, 'buf'
7266 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
7268 *) CONF library reworked to become more general. A new CONF
7269 configuration file reader "class" is implemented as well as a
7270 new functions (NCONF_*, for "New CONF") to handle it. The now
7271 old CONF_* functions are still there, but are reimplemented to
7272 work in terms of the new functions. Also, a set of functions
7273 to handle the internal storage of the configuration data is
7274 provided to make it easier to write new configuration file
7275 reader "classes" (I can definitely see something reading a
7276 configuration file in XML format, for example), called _CONF_*,
7277 or "the configuration storage API"...
7279 The new configuration file reading functions are:
7281 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
7282 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
7284 NCONF_default, NCONF_WIN32
7286 NCONF_dump_fp, NCONF_dump_bio
7288 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
7289 NCONF_new creates a new CONF object. This works in the same way
7290 as other interfaces in OpenSSL, like the BIO interface.
7291 NCONF_dump_* dump the internal storage of the configuration file,
7292 which is useful for debugging. All other functions take the same
7293 arguments as the old CONF_* functions wth the exception of the
7294 first that must be a `CONF *' instead of a `LHASH *'.
7296 To make it easer to use the new classes with the old CONF_* functions,
7297 the function CONF_set_default_method is provided.
7300 *) Add '-tls1' option to 'openssl ciphers', which was already
7301 mentioned in the documentation but had not been implemented.
7302 (This option is not yet really useful because even the additional
7303 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
7306 *) Initial DSO code added into libcrypto for letting OpenSSL (and
7307 OpenSSL-based applications) load shared libraries and bind to
7308 them in a portable way.
7309 [Geoff Thorpe, with contributions from Richard Levitte]
7311 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
7313 *) Make sure _lrotl and _lrotr are only used with MSVC.
7315 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
7316 (the default implementation of RAND_status).
7318 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
7319 to '-clrext' (= clear extensions), as intended and documented.
7320 [Bodo Moeller; inconsistency pointed out by Michael Attili
7323 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
7324 was larger than the MD block size.
7325 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
7327 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
7328 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
7329 using the passed key: if the passed key was a private key the result
7330 of X509_print(), for example, would be to print out all the private key
7334 *) des_quad_cksum() byte order bug fix.
7335 [Ulf Möller, using the problem description in krb4-0.9.7, where
7336 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
7338 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
7340 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
7342 *) For easily testing in shell scripts whether some command
7343 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
7344 returns with exit code 0 iff no command of the given name is available.
7345 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
7346 the output goes to stdout and nothing is printed to stderr.
7347 Additional arguments are always ignored.
7349 Since for each cipher there is a command of the same name,
7350 the 'no-cipher' compilation switches can be tested this way.
7352 ('openssl no-XXX' is not able to detect pseudo-commands such
7353 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
7356 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
7359 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
7360 is set; it will be thrown away anyway because each handshake creates
7362 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
7363 to parameters -- in previous versions (since OpenSSL 0.9.3) the
7364 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
7365 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
7368 *) New s_client option -ign_eof: EOF at stdin is ignored, and
7369 'Q' and 'R' lose their special meanings (quit/renegotiate).
7370 This is part of what -quiet does; unlike -quiet, -ign_eof
7371 does not suppress any output.
7374 *) Add compatibility options to the purpose and trust code. The
7375 purpose X509_PURPOSE_ANY is "any purpose" which automatically
7376 accepts a certificate or CA, this was the previous behaviour,
7377 with all the associated security issues.
7379 X509_TRUST_COMPAT is the old trust behaviour: only and
7380 automatically trust self signed roots in certificate store. A
7381 new trust setting X509_TRUST_DEFAULT is used to specify that
7382 a purpose has no associated trust setting and it should instead
7383 use the value in the default purpose.
7386 *) Fix the PKCS#8 DSA private key code so it decodes keys again
7387 and fix a memory leak.
7390 *) In util/mkerr.pl (which implements 'make errors'), preserve
7391 reason strings from the previous version of the .c file, as
7392 the default to have only downcase letters (and digits) in
7393 automatically generated reasons codes is not always appropriate.
7396 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
7397 using strerror. Previously, ERR_reason_error_string() returned
7398 library names as reason strings for SYSerr; but SYSerr is a special
7399 case where small numbers are errno values, not library numbers.
7402 *) Add '-dsaparam' option to 'openssl dhparam' application. This
7403 converts DSA parameters into DH parameters. (When creating parameters,
7404 DSA_generate_parameters is used.)
7407 *) Include 'length' (recommended exponent length) in C code generated
7408 by 'openssl dhparam -C'.
7411 *) The second argument to set_label in perlasm was already being used
7412 so couldn't be used as a "file scope" flag. Moved to third argument
7416 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
7417 instead of RAND_bytes for encryption IVs and salts.
7420 *) Include RAND_status() into RAND_METHOD instead of implementing
7421 it only for md_rand.c Otherwise replacing the PRNG by calling
7422 RAND_set_rand_method would be impossible.
7425 *) Don't let DSA_generate_key() enter an infinite loop if the random
7426 number generation fails.
7429 *) New 'rand' application for creating pseudo-random output.
7432 *) Added configuration support for Linux/IA64
7433 [Rolf Haberrecker <rolf@suse.de>]
7435 *) Assembler module support for Mingw32.
7438 *) Shared library support for HPUX (in shlib/).
7439 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
7441 *) Shared library support for Solaris gcc.
7442 [Lutz Behnke <behnke@trustcenter.de>]
7444 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
7446 *) PKCS7_encrypt() was adding text MIME headers twice because they
7447 were added manually and by SMIME_crlf_copy().
7450 *) In bntest.c don't call BN_rand with zero bits argument.
7451 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
7453 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
7454 case was implemented. This caused BN_div_recp() to fail occasionally.
7457 *) Add an optional second argument to the set_label() in the perl
7458 assembly language builder. If this argument exists and is set
7459 to 1 it signals that the assembler should use a symbol whose
7460 scope is the entire file, not just the current function. This
7461 is needed with MASM which uses the format label:: for this scope.
7462 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
7464 *) Change the ASN1 types so they are typedefs by default. Before
7465 almost all types were #define'd to ASN1_STRING which was causing
7466 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
7470 *) Change names of new functions to the new get1/get0 naming
7471 convention: After 'get1', the caller owns a reference count
7472 and has to call ..._free; 'get0' returns a pointer to some
7473 data structure without incrementing reference counters.
7474 (Some of the existing 'get' functions increment a reference
7475 counter, some don't.)
7476 Similarly, 'set1' and 'add1' functions increase reference
7477 counters or duplicate objects.
7480 *) Allow for the possibility of temp RSA key generation failure:
7481 the code used to assume it always worked and crashed on failure.
7484 *) Fix potential buffer overrun problem in BIO_printf().
7485 [Ulf Möller, using public domain code by Patrick Powell; problem
7486 pointed out by David Sacerdote <das33@cornell.edu>]
7488 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
7489 RAND_egd() and RAND_status(). In the command line application,
7490 the EGD socket can be specified like a seed file using RANDFILE
7494 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
7495 Some CAs (e.g. Verisign) distribute certificates in this form.
7498 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
7499 list to exclude them. This means that no special compilation option
7500 is needed to use anonymous DH: it just needs to be included in the
7504 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
7505 EVP_MD_type. The old functionality is available in a new macro called
7506 EVP_MD_md(). Change code that uses it and update docs.
7509 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
7510 where the 'void *' argument is replaced by a function pointer argument.
7511 Previously 'void *' was abused to point to functions, which works on
7512 many platforms, but is not correct. As these functions are usually
7513 called by macros defined in OpenSSL header files, most source code
7514 should work without changes.
7517 *) <openssl/opensslconf.h> (which is created by Configure) now contains
7518 sections with information on -D... compiler switches used for
7519 compiling the library so that applications can see them. To enable
7520 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
7521 must be defined. E.g.,
7522 #define OPENSSL_ALGORITHM_DEFINES
7523 #include <openssl/opensslconf.h>
7524 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
7525 [Richard Levitte, Ulf and Bodo Möller]
7527 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
7531 *) Change the 'other' type in certificate aux info to a STACK_OF
7532 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
7533 the required ASN1 format: arbitrary types determined by an OID.
7536 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
7537 argument to 'req'. This is not because the function is newer or
7538 better than others it just uses the work 'NEW' in the certificate
7539 request header lines. Some software needs this.
7542 *) Reorganise password command line arguments: now passwords can be
7543 obtained from various sources. Delete the PEM_cb function and make
7544 it the default behaviour: i.e. if the callback is NULL and the
7545 usrdata argument is not NULL interpret it as a null terminated pass
7546 phrase. If usrdata and the callback are NULL then the pass phrase
7547 is prompted for as usual.
7550 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
7551 the support is automatically enabled. The resulting binaries will
7552 autodetect the card and use it if present.
7553 [Ben Laurie and Compaq Inc.]
7555 *) Work around for Netscape hang bug. This sends certificate request
7556 and server done in one record. Since this is perfectly legal in the
7557 SSL/TLS protocol it isn't a "bug" option and is on by default. See
7558 the bugs/SSLv3 entry for more info.
7561 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
7564 *) Add -rand argument to smime and pkcs12 applications and read/write
7568 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
7571 *) Add command line password options to the remaining applications.
7574 *) Bug fix for BN_div_recp() for numerators with an even number of
7578 *) More tests in bntest.c, and changed test_bn output.
7581 *) ./config recognizes MacOS X now.
7584 *) Bug fix for BN_div() when the first words of num and divsor are
7585 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
7588 *) Add support for various broken PKCS#8 formats, and command line
7589 options to produce them.
7592 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
7593 get temporary BIGNUMs from a BN_CTX.
7596 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
7600 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
7601 include a #define from the old name to the new. The original intent
7602 was that statically linked binaries could for example just call
7603 SSLeay_add_all_ciphers() to just add ciphers to the table and not
7604 link with digests. This never worked becayse SSLeay_add_all_digests()
7605 and SSLeay_add_all_ciphers() were in the same source file so calling
7606 one would link with the other. They are now in separate source files.
7609 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
7612 *) Use a less unusual form of the Miller-Rabin primality test (it used
7613 a binary algorithm for exponentiation integrated into the Miller-Rabin
7614 loop, our standard modexp algorithms are faster).
7617 *) Support for the EBCDIC character set completed.
7618 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
7620 *) Source code cleanups: use const where appropriate, eliminate casts,
7621 use void * instead of char * in lhash.
7624 *) Bugfix: ssl3_send_server_key_exchange was not restartable
7625 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
7626 this the server could overwrite ephemeral keys that the client
7630 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
7631 using 50 iterations of the Rabin-Miller test.
7633 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
7634 iterations of the Rabin-Miller test as required by the appendix
7635 to FIPS PUB 186[-1]) instead of DSA_is_prime.
7636 As BN_is_prime_fasttest includes trial division, DSA parameter
7637 generation becomes much faster.
7639 This implies a change for the callback functions in DSA_is_prime
7640 and DSA_generate_parameters: The callback function is called once
7641 for each positive witness in the Rabin-Miller test, not just
7642 occasionally in the inner loop; and the parameters to the
7643 callback function now provide an iteration count for the outer
7644 loop rather than for the current invocation of the inner loop.
7645 DSA_generate_parameters additionally can call the callback
7646 function with an 'iteration count' of -1, meaning that a
7647 candidate has passed the trial division test (when q is generated
7648 from an application-provided seed, trial division is skipped).
7651 *) New function BN_is_prime_fasttest that optionally does trial
7652 division before starting the Rabin-Miller test and has
7653 an additional BN_CTX * argument (whereas BN_is_prime always
7654 has to allocate at least one BN_CTX).
7655 'callback(1, -1, cb_arg)' is called when a number has passed the
7656 trial division stage.
7659 *) Fix for bug in CRL encoding. The validity dates weren't being handled
7663 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
7666 *) New function BN_pseudo_rand().
7669 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
7670 bignum version of BN_from_montgomery() with the working code from
7671 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
7675 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
7676 made it impossible to use the same SSL_SESSION data structure in
7677 SSL2 clients in multiple threads.
7680 *) The return value of RAND_load_file() no longer counts bytes obtained
7681 by stat(). RAND_load_file(..., -1) is new and uses the complete file
7682 to seed the PRNG (previously an explicit byte count was required).
7683 [Ulf Möller, Bodo Möller]
7685 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
7686 used (char *) instead of (void *) and had casts all over the place.
7689 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
7692 *) Retain source code compatibility for BN_prime_checks macro:
7693 BN_is_prime(..., BN_prime_checks, ...) now uses
7694 BN_prime_checks_for_size to determine the appropriate number of
7695 Rabin-Miller iterations.
7698 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
7699 DH_CHECK_P_NOT_SAFE_PRIME.
7700 (Check if this is true? OpenPGP calls them "strong".)
7703 *) Merge the functionality of "dh" and "gendh" programs into a new program
7704 "dhparam". The old programs are retained for now but will handle DH keys
7705 (instead of parameters) in future.
7708 *) Make the ciphers, s_server and s_client programs check the return values
7709 when a new cipher list is set.
7712 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
7713 ciphers. Before when the 56bit ciphers were enabled the sorting was
7716 The syntax for the cipher sorting has been extended to support sorting by
7717 cipher-strength (using the strength_bits hard coded in the tables).
7718 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
7720 Fix a bug in the cipher-command parser: when supplying a cipher command
7721 string with an "undefined" symbol (neither command nor alphanumeric
7722 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
7723 an error is flagged.
7725 Due to the strength-sorting extension, the code of the
7726 ssl_create_cipher_list() function was completely rearranged. I hope that
7727 the readability was also increased :-)
7728 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
7730 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
7731 for the first serial number and places 2 in the serial number file. This
7732 avoids problems when the root CA is created with serial number zero and
7733 the first user certificate has the same issuer name and serial number
7737 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
7738 the new code. Add documentation for this stuff.
7741 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
7742 X509_*() to X509at_*() on the grounds that they don't handle X509
7743 structures and behave in an analagous way to the X509v3 functions:
7744 they shouldn't be called directly but wrapper functions should be used
7747 So we also now have some wrapper functions that call the X509at functions
7748 when passed certificate requests. (TO DO: similar things can be done with
7749 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
7750 things. Some of these need some d2i or i2d and print functionality
7751 because they handle more complex structures.)
7754 *) Add missing #ifndefs that caused missing symbols when building libssl
7755 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
7756 NO_RSA in ssl/s2*.c.
7757 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
7759 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
7760 has a return value which indicates the quality of the random data
7761 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
7762 error queue. New function RAND_pseudo_bytes() generates output that is
7763 guaranteed to be unique but not unpredictable. RAND_add is like
7764 RAND_seed, but takes an extra argument for an entropy estimate
7765 (RAND_seed always assumes full entropy).
7768 *) Do more iterations of Rabin-Miller probable prime test (specifically,
7769 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
7770 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
7771 in crypto/bn/bn_prime.c for the complete table). This guarantees a
7772 false-positive rate of at most 2^-80 for random input.
7775 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
7778 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
7779 in the 0.9.5 release), this returns the chain
7780 from an X509_CTX structure with a dup of the stack and all
7781 the X509 reference counts upped: so the stack will exist
7782 after X509_CTX_cleanup() has been called. Modify pkcs12.c
7785 Also make SSL_SESSION_print() print out the verify return
7789 *) Add manpage for the pkcs12 command. Also change the default
7790 behaviour so MAC iteration counts are used unless the new
7791 -nomaciter option is used. This improves file security and
7792 only older versions of MSIE (4.0 for example) need it.
7795 *) Honor the no-xxx Configure options when creating .DEF files.
7798 *) Add PKCS#10 attributes to field table: challengePassword,
7799 unstructuredName and unstructuredAddress. These are taken from
7800 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
7801 international characters are used.
7803 More changes to X509_ATTRIBUTE code: allow the setting of types
7804 based on strings. Remove the 'loc' parameter when adding
7805 attributes because these will be a SET OF encoding which is sorted
7809 *) Initial changes to the 'req' utility to allow request generation
7810 automation. This will allow an application to just generate a template
7811 file containing all the field values and have req construct the
7814 Initial support for X509_ATTRIBUTE handling. Stacks of these are
7815 used all over the place including certificate requests and PKCS#7
7816 structures. They are currently handled manually where necessary with
7817 some primitive wrappers for PKCS#7. The new functions behave in a
7818 manner analogous to the X509 extension functions: they allow
7819 attributes to be looked up by NID and added.
7821 Later something similar to the X509V3 code would be desirable to
7822 automatically handle the encoding, decoding and printing of the
7823 more complex types. The string types like challengePassword can
7824 be handled by the string table functions.
7826 Also modified the multi byte string table handling. Now there is
7827 a 'global mask' which masks out certain types. The table itself
7828 can use the flag STABLE_NO_MASK to ignore the mask setting: this
7829 is useful when for example there is only one permissible type
7830 (as in countryName) and using the mask might result in no valid
7834 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
7835 SSL_get_peer_finished to allow applications to obtain the latest
7836 Finished messages sent to the peer or expected from the peer,
7837 respectively. (SSL_get_peer_finished is usually the Finished message
7838 actually received from the peer, otherwise the protocol will be aborted.)
7840 As the Finished message are message digests of the complete handshake
7841 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
7842 be used for external authentication procedures when the authentication
7843 provided by SSL/TLS is not desired or is not enough.
7846 *) Enhanced support for Alpha Linux is added. Now ./config checks if
7847 the host supports BWX extension and if Compaq C is present on the
7848 $PATH. Just exploiting of the BWX extension results in 20-30%
7849 performance kick for some algorithms, e.g. DES and RC4 to mention
7850 a couple. Compaq C in turn generates ~20% faster code for MD5 and
7854 *) Add support for MS "fast SGC". This is arguably a violation of the
7855 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
7856 weak crypto and after checking the certificate is SGC a second one
7857 with strong crypto. MS SGC stops the first handshake after receiving
7858 the server certificate message and sends a second client hello. Since
7859 a server will typically do all the time consuming operations before
7860 expecting any further messages from the client (server key exchange
7861 is the most expensive) there is little difference between the two.
7863 To get OpenSSL to support MS SGC we have to permit a second client
7864 hello message after we have sent server done. In addition we have to
7865 reset the MAC if we do get this second client hello.
7868 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
7869 if a DER encoded private key is RSA or DSA traditional format. Changed
7870 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
7871 format DER encoded private key. Newer code should use PKCS#8 format which
7872 has the key type encoded in the ASN1 structure. Added DER private key
7873 support to pkcs8 application.
7876 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
7877 ciphersuites has been selected (as required by the SSL 3/TLS 1
7878 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
7879 is set, we interpret this as a request to violate the specification
7880 (the worst that can happen is a handshake failure, and 'correct'
7881 behaviour would result in a handshake failure anyway).
7884 *) In SSL_CTX_add_session, take into account that there might be multiple
7885 SSL_SESSION structures with the same session ID (e.g. when two threads
7886 concurrently obtain them from an external cache).
7887 The internal cache can handle only one SSL_SESSION with a given ID,
7888 so if there's a conflict, we now throw out the old one to achieve
7892 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
7893 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
7894 some routines that use cipher OIDs: some ciphers do not have OIDs
7895 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
7899 *) Simplify the trust setting structure and code. Now we just have
7900 two sequences of OIDs for trusted and rejected settings. These will
7901 typically have values the same as the extended key usage extension
7902 and any application specific purposes.
7904 The trust checking code now has a default behaviour: it will just
7905 check for an object with the same NID as the passed id. Functions can
7906 be provided to override either the default behaviour or the behaviour
7907 for a given id. SSL client, server and email already have functions
7908 in place for compatibility: they check the NID and also return "trusted"
7909 if the certificate is self signed.
7912 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
7913 traditional format into an EVP_PKEY structure.
7916 *) Add a password callback function PEM_cb() which either prompts for
7917 a password if usr_data is NULL or otherwise assumes it is a null
7918 terminated password. Allow passwords to be passed on command line
7919 environment or config files in a few more utilities.
7922 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
7923 keys. Add some short names for PKCS#8 PBE algorithms and allow them
7924 to be specified on the command line for the pkcs8 and pkcs12 utilities.
7925 Update documentation.
7928 *) Support for ASN1 "NULL" type. This could be handled before by using
7929 ASN1_TYPE but there wasn't any function that would try to read a NULL
7930 and produce an error if it couldn't. For compatibility we also have
7931 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
7932 don't allocate anything because they don't need to.
7935 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
7937 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
7939 *) Rebuild of the memory allocation routines used by OpenSSL code and
7940 possibly others as well. The purpose is to make an interface that
7941 provide hooks so anyone can build a separate set of allocation and
7942 deallocation routines to be used by OpenSSL, for example memory
7943 pool implementations, or something else, which was previously hard
7944 since Malloc(), Realloc() and Free() were defined as macros having
7945 the values malloc, realloc and free, respectively (except for Win32
7946 compilations). The same is provided for memory debugging code.
7947 OpenSSL already comes with functionality to find memory leaks, but
7948 this gives people a chance to debug other memory problems.
7950 With these changes, a new set of functions and macros have appeared:
7952 CRYPTO_set_mem_debug_functions() [F]
7953 CRYPTO_get_mem_debug_functions() [F]
7954 CRYPTO_dbg_set_options() [F]
7955 CRYPTO_dbg_get_options() [F]
7956 CRYPTO_malloc_debug_init() [M]
7958 The memory debug functions are NULL by default, unless the library
7959 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
7960 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
7961 gives the standard debugging functions that come with OpenSSL) or
7962 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
7963 provided by the library user) must be used. When the standard
7964 debugging functions are used, CRYPTO_dbg_set_options can be used to
7965 request additional information:
7966 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
7967 the CRYPTO_MDEBUG_xxx macro when compiling the library.
7969 Also, things like CRYPTO_set_mem_functions will always give the
7970 expected result (the new set of functions is used for allocation
7971 and deallocation) at all times, regardless of platform and compiler
7974 To finish it up, some functions that were never use in any other
7975 way than through macros have a new API and new semantic:
7978 CRYPTO_dbg_realloc()
7981 All macros of value have retained their old syntax.
7982 [Richard Levitte and Bodo Moeller]
7984 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
7985 ordering of SMIMECapabilities wasn't in "strength order" and there
7986 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
7990 *) Some ASN1 types with illegal zero length encoding (INTEGER,
7991 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
7992 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
7994 *) Merge in my S/MIME library for OpenSSL. This provides a simple
7995 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
7996 functionality to handle multipart/signed properly) and a utility
7997 called 'smime' to call all this stuff. This is based on code I
7998 originally wrote for Celo who have kindly allowed it to be
7999 included in OpenSSL.
8002 *) Add variants des_set_key_checked and des_set_key_unchecked of
8003 des_set_key (aka des_key_sched). Global variable des_check_key
8004 decides which of these is called by des_set_key; this way
8005 des_check_key behaves as it always did, but applications and
8006 the library itself, which was buggy for des_check_key == 1,
8007 have a cleaner way to pick the version they need.
8010 *) New function PKCS12_newpass() which changes the password of a
8014 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
8015 dynamic mix. In both cases the ids can be used as an index into the
8016 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
8017 functions so they accept a list of the field values and the
8018 application doesn't need to directly manipulate the X509_TRUST
8022 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
8026 *) Modify the way the V3 extension code looks up extensions. This now
8027 works in a similar way to the object code: we have some "standard"
8028 extensions in a static table which is searched with OBJ_bsearch()
8029 and the application can add dynamic ones if needed. The file
8030 crypto/x509v3/ext_dat.h now has the info: this file needs to be
8031 updated whenever a new extension is added to the core code and kept
8032 in ext_nid order. There is a simple program 'tabtest.c' which checks
8033 this. New extensions are not added too often so this file can readily
8034 be maintained manually.
8036 There are two big advantages in doing things this way. The extensions
8037 can be looked up immediately and no longer need to be "added" using
8038 X509V3_add_standard_extensions(): this function now does nothing.
8039 [Side note: I get *lots* of email saying the extension code doesn't
8040 work because people forget to call this function]
8041 Also no dynamic allocation is done unless new extensions are added:
8042 so if we don't add custom extensions there is no need to call
8043 X509V3_EXT_cleanup().
8046 *) Modify enc utility's salting as follows: make salting the default. Add a
8047 magic header, so unsalted files fail gracefully instead of just decrypting
8048 to garbage. This is because not salting is a big security hole, so people
8049 should be discouraged from doing it.
8052 *) Fixes and enhancements to the 'x509' utility. It allowed a message
8053 digest to be passed on the command line but it only used this
8054 parameter when signing a certificate. Modified so all relevant
8055 operations are affected by the digest parameter including the
8056 -fingerprint and -x509toreq options. Also -x509toreq choked if a
8057 DSA key was used because it didn't fix the digest.
8060 *) Initial certificate chain verify code. Currently tests the untrusted
8061 certificates for consistency with the verify purpose (which is set
8062 when the X509_STORE_CTX structure is set up) and checks the pathlength.
8064 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
8065 this is because it will reject chains with invalid extensions whereas
8066 every previous version of OpenSSL and SSLeay made no checks at all.
8068 Trust code: checks the root CA for the relevant trust settings. Trust
8069 settings have an initial value consistent with the verify purpose: e.g.
8070 if the verify purpose is for SSL client use it expects the CA to be
8071 trusted for SSL client use. However the default value can be changed to
8072 permit custom trust settings: one example of this would be to only trust
8073 certificates from a specific "secure" set of CAs.
8075 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
8076 which should be used for version portability: especially since the
8077 verify structure is likely to change more often now.
8079 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
8080 to set them. If not set then assume SSL clients will verify SSL servers
8083 Two new options to the verify program: -untrusted allows a set of
8084 untrusted certificates to be passed in and -purpose which sets the
8085 intended purpose of the certificate. If a purpose is set then the
8086 new chain verify code is used to check extension consistency.
8089 *) Support for the authority information access extension.
8092 *) Modify RSA and DSA PEM read routines to transparently handle
8093 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
8094 public keys in a format compatible with certificate
8095 SubjectPublicKeyInfo structures. Unfortunately there were already
8096 functions called *_PublicKey_* which used various odd formats so
8097 these are retained for compatibility: however the DSA variants were
8098 never in a public release so they have been deleted. Changed dsa/rsa
8099 utilities to handle the new format: note no releases ever handled public
8100 keys so we should be OK.
8102 The primary motivation for this change is to avoid the same fiasco
8103 that dogs private keys: there are several incompatible private key
8104 formats some of which are standard and some OpenSSL specific and
8105 require various evil hacks to allow partial transparent handling and
8106 even then it doesn't work with DER formats. Given the option anything
8107 other than PKCS#8 should be dumped: but the other formats have to
8108 stay in the name of compatibility.
8110 With public keys and the benefit of hindsight one standard format
8111 is used which works with EVP_PKEY, RSA or DSA structures: though
8112 it clearly returns an error if you try to read the wrong kind of key.
8114 Added a -pubkey option to the 'x509' utility to output the public key.
8115 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
8116 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
8117 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
8118 that do the same as the EVP_PKEY_assign_*() except they up the
8119 reference count of the added key (they don't "swallow" the
8123 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
8124 CRLs would fail if the file contained no certificates or no CRLs:
8125 added a new function to read in both types and return the number
8126 read: this means that if none are read it will be an error. The
8127 DER versions of the certificate and CRL reader would always fail
8128 because it isn't possible to mix certificates and CRLs in DER format
8129 without choking one or the other routine. Changed this to just read
8130 a certificate: this is the best we can do. Also modified the code
8131 in apps/verify.c to take notice of return codes: it was previously
8132 attempting to read in certificates from NULL pointers and ignoring
8133 any errors: this is one reason why the cert and CRL reader seemed
8134 to work. It doesn't check return codes from the default certificate
8135 routines: these may well fail if the certificates aren't installed.
8138 *) Code to support otherName option in GeneralName.
8141 *) First update to verify code. Change the verify utility
8142 so it warns if it is passed a self signed certificate:
8143 for consistency with the normal behaviour. X509_verify
8144 has been modified to it will now verify a self signed
8145 certificate if *exactly* the same certificate appears
8146 in the store: it was previously impossible to trust a
8147 single self signed certificate. This means that:
8148 openssl verify ss.pem
8149 now gives a warning about a self signed certificate but
8150 openssl verify -CAfile ss.pem ss.pem
8154 *) For servers, store verify_result in SSL_SESSION data structure
8155 (and add it to external session representation).
8156 This is needed when client certificate verifications fails,
8157 but an application-provided verification callback (set by
8158 SSL_CTX_set_cert_verify_callback) allows accepting the session
8159 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
8160 but returns 1): When the session is reused, we have to set
8161 ssl->verify_result to the appropriate error code to avoid
8163 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
8165 *) Fix a bug in the new PKCS#7 code: it didn't consider the
8166 case in PKCS7_dataInit() where the signed PKCS7 structure
8167 didn't contain any existing data because it was being created.
8168 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
8170 *) Add a salt to the key derivation routines in enc.c. This
8171 forms the first 8 bytes of the encrypted file. Also add a
8172 -S option to allow a salt to be input on the command line.
8175 *) New function X509_cmp(). Oddly enough there wasn't a function
8176 to compare two certificates. We do this by working out the SHA1
8177 hash and comparing that. X509_cmp() will be needed by the trust
8181 *) SSL_get1_session() is like SSL_get_session(), but increments
8182 the reference count in the SSL_SESSION returned.
8183 [Geoff Thorpe <geoff@eu.c2.net>]
8185 *) Fix for 'req': it was adding a null to request attributes.
8186 Also change the X509_LOOKUP and X509_INFO code to handle
8187 certificate auxiliary information.
8190 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
8194 *) Add the possibility to add extra information to the memory leak
8195 detecting output, to form tracebacks, showing from where each
8196 allocation was originated: CRYPTO_push_info("constant string") adds
8197 the string plus current file name and line number to a per-thread
8198 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
8199 is like calling CYRPTO_pop_info() until the stack is empty.
8200 Also updated memory leak detection code to be multi-thread-safe.
8203 *) Add options -text and -noout to pkcs7 utility and delete the
8204 encryption options which never did anything. Update docs.
8207 *) Add options to some of the utilities to allow the pass phrase
8208 to be included on either the command line (not recommended on
8209 OSes like Unix) or read from the environment. Update the
8210 manpages and fix a few bugs.
8213 *) Add a few manpages for some of the openssl commands.
8216 *) Fix the -revoke option in ca. It was freeing up memory twice,
8217 leaking and not finding already revoked certificates.
8220 *) Extensive changes to support certificate auxiliary information.
8221 This involves the use of X509_CERT_AUX structure and X509_AUX
8222 functions. An X509_AUX function such as PEM_read_X509_AUX()
8223 can still read in a certificate file in the usual way but it
8224 will also read in any additional "auxiliary information". By
8225 doing things this way a fair degree of compatibility can be
8226 retained: existing certificates can have this information added
8227 using the new 'x509' options.
8229 Current auxiliary information includes an "alias" and some trust
8230 settings. The trust settings will ultimately be used in enhanced
8231 certificate chain verification routines: currently a certificate
8232 can only be trusted if it is self signed and then it is trusted
8236 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
8237 The problem was that one of the replacement routines had not been working
8238 since SSLeay releases. For now the offending routine has been replaced
8239 with non-optimised assembler. Even so, this now gives around 95%
8240 performance improvement for 1024 bit RSA signs.
8243 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
8244 handling. Most clients have the effective key size in bits equal to
8245 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
8246 A few however don't do this and instead use the size of the decrypted key
8247 to determine the RC2 key length and the AlgorithmIdentifier to determine
8248 the effective key length. In this case the effective key length can still
8249 be 40 bits but the key length can be 168 bits for example. This is fixed
8250 by manually forcing an RC2 key into the EVP_PKEY structure because the
8251 EVP code can't currently handle unusual RC2 key sizes: it always assumes
8252 the key length and effective key length are equal.
8255 *) Add a bunch of functions that should simplify the creation of
8256 X509_NAME structures. Now you should be able to do:
8257 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
8258 and have it automatically work out the correct field type and fill in
8259 the structures. The more adventurous can try:
8260 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
8261 and it will (hopefully) work out the correct multibyte encoding.
8264 *) Change the 'req' utility to use the new field handling and multibyte
8265 copy routines. Before the DN field creation was handled in an ad hoc
8266 way in req, ca, and x509 which was rather broken and didn't support
8267 BMPStrings or UTF8Strings. Since some software doesn't implement
8268 BMPStrings or UTF8Strings yet, they can be enabled using the config file
8269 using the dirstring_type option. See the new comment in the default
8270 openssl.cnf for more info.
8273 *) Make crypto/rand/md_rand.c more robust:
8274 - Assure unique random numbers after fork().
8275 - Make sure that concurrent threads access the global counter and
8276 md serializably so that we never lose entropy in them
8277 or use exactly the same state in multiple threads.
8278 Access to the large state is not always serializable because
8279 the additional locking could be a performance killer, and
8280 md should be large enough anyway.
8283 *) New file apps/app_rand.c with commonly needed functionality
8284 for handling the random seed file.
8286 Use the random seed file in some applications that previously did not:
8288 dsaparam -genkey (which also ignored its '-rand' option),
8291 x509 (when signing).
8292 Except on systems with /dev/urandom, it is crucial to have a random
8293 seed file at least for key creation, DSA signing, and for DH exchanges;
8294 for RSA signatures we could do without one.
8296 gendh and gendsa (unlike genrsa) used to read only the first byte
8297 of each file listed in the '-rand' option. The function as previously
8298 found in genrsa is now in app_rand.c and is used by all programs
8299 that support '-rand'.
8302 *) In RAND_write_file, use mode 0600 for creating files;
8303 don't just chmod when it may be too late.
8306 *) Report an error from X509_STORE_load_locations
8307 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
8310 *) New function ASN1_mbstring_copy() this copies a string in either
8311 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
8312 into an ASN1_STRING type. A mask of permissible types is passed
8313 and it chooses the "minimal" type to use or an error if not type
8317 *) Add function equivalents to the various macros in asn1.h. The old
8318 macros are retained with an M_ prefix. Code inside the library can
8319 use the M_ macros. External code (including the openssl utility)
8320 should *NOT* in order to be "shared library friendly".
8323 *) Add various functions that can check a certificate's extensions
8324 to see if it usable for various purposes such as SSL client,
8325 server or S/MIME and CAs of these types. This is currently
8326 VERY EXPERIMENTAL but will ultimately be used for certificate chain
8327 verification. Also added a -purpose flag to x509 utility to
8328 print out all the purposes.
8331 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
8335 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
8336 for, obtain and decode and extension and obtain its critical flag.
8337 This allows all the necessary extension code to be handled in a
8338 single function call.
8341 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
8342 platforms. See crypto/rc4/rc4_enc.c for further details.
8345 *) New -noout option to asn1parse. This causes no output to be produced
8346 its main use is when combined with -strparse and -out to extract data
8347 from a file (which may not be in ASN.1 format).
8350 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
8351 when producing the local key id.
8352 [Richard Levitte <levitte@stacken.kth.se>]
8354 *) New option -dhparam in s_server. This allows a DH parameter file to be
8355 stated explicitly. If it is not stated then it tries the first server
8356 certificate file. The previous behaviour hard coded the filename
8360 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
8361 a public key to be input or output. For example:
8362 openssl rsa -in key.pem -pubout -out pubkey.pem
8363 Also added necessary DSA public key functions to handle this.
8366 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
8367 in the message. This was handled by allowing
8368 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
8369 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
8371 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
8372 to the end of the strings whereas this didn't. This would cause problems
8373 if strings read with d2i_ASN1_bytes() were later modified.
8374 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
8376 *) Fix for base64 decode bug. When a base64 bio reads only one line of
8377 data and it contains EOF it will end up returning an error. This is
8378 caused by input 46 bytes long. The cause is due to the way base64
8379 BIOs find the start of base64 encoded data. They do this by trying a
8380 trial decode on each line until they find one that works. When they
8381 do a flag is set and it starts again knowing it can pass all the
8382 data directly through the decoder. Unfortunately it doesn't reset
8383 the context it uses. This means that if EOF is reached an attempt
8384 is made to pass two EOFs through the context and this causes the
8385 resulting error. This can also cause other problems as well. As is
8386 usual with these problems it takes *ages* to find and the fix is
8387 trivial: move one line.
8388 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
8390 *) Ugly workaround to get s_client and s_server working under Windows. The
8391 old code wouldn't work because it needed to select() on sockets and the
8392 tty (for keypresses and to see if data could be written). Win32 only
8393 supports select() on sockets so we select() with a 1s timeout on the
8394 sockets and then see if any characters are waiting to be read, if none
8395 are present then we retry, we also assume we can always write data to
8396 the tty. This isn't nice because the code then blocks until we've
8397 received a complete line of data and it is effectively polling the
8398 keyboard at 1s intervals: however it's quite a bit better than not
8399 working at all :-) A dedicated Windows application might handle this
8400 with an event loop for example.
8403 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
8404 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
8405 will be called when RSA_sign() and RSA_verify() are used. This is useful
8406 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
8407 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
8408 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
8409 This necessitated the support of an extra signature type NID_md5_sha1
8410 for SSL signatures and modifications to the SSL library to use it instead
8411 of calling RSA_public_decrypt() and RSA_private_encrypt().
8414 *) Add new -verify -CAfile and -CApath options to the crl program, these
8415 will lookup a CRL issuers certificate and verify the signature in a
8416 similar way to the verify program. Tidy up the crl program so it
8417 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
8418 less strict. It will now permit CRL extensions even if it is not
8419 a V2 CRL: this will allow it to tolerate some broken CRLs.
8422 *) Initialize all non-automatic variables each time one of the openssl
8423 sub-programs is started (this is necessary as they may be started
8424 multiple times from the "OpenSSL>" prompt).
8425 [Lennart Bang, Bodo Moeller]
8427 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
8428 removing all other RSA functionality (this is what NO_RSA does). This
8429 is so (for example) those in the US can disable those operations covered
8430 by the RSA patent while allowing storage and parsing of RSA keys and RSA
8434 *) Non-copying interface to BIO pairs.
8435 (still largely untested)
8438 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
8439 ASCII string. This was handled independently in various places before.
8442 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
8443 UTF8 strings a character at a time.
8446 *) Use client_version from client hello to select the protocol
8447 (s23_srvr.c) and for RSA client key exchange verification
8448 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
8451 *) Add various utility functions to handle SPKACs, these were previously
8452 handled by poking round in the structure internals. Added new function
8453 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
8454 print, verify and generate SPKACs. Based on an original idea from
8455 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
8458 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
8461 *) Allow the config file extension section to be overwritten on the
8462 command line. Based on an original idea from Massimiliano Pala
8463 <madwolf@comune.modena.it>. The new option is called -extensions
8464 and can be applied to ca, req and x509. Also -reqexts to override
8465 the request extensions in req and -crlexts to override the crl extensions
8469 *) Add new feature to the SPKAC handling in ca. Now you can include
8470 the same field multiple times by preceding it by "XXXX." for example:
8473 this is the same syntax as used in the req config file.
8476 *) Allow certificate extensions to be added to certificate requests. These
8477 are specified in a 'req_extensions' option of the req section of the
8478 config file. They can be printed out with the -text option to req but
8479 are otherwise ignored at present.
8482 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
8483 data read consists of only the final block it would not decrypted because
8484 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
8485 A misplaced 'break' also meant the decrypted final block might not be
8486 copied until the next read.
8489 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
8490 a few extra parameters to the DH structure: these will be useful if
8491 for example we want the value of 'q' or implement X9.42 DH.
8494 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
8495 provides hooks that allow the default DSA functions or functions on a
8496 "per key" basis to be replaced. This allows hardware acceleration and
8497 hardware key storage to be handled without major modification to the
8498 library. Also added low level modexp hooks and CRYPTO_EX structure and
8499 associated functions.
8502 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
8503 as "read only": it can't be written to and the buffer it points to will
8504 not be freed. Reading from a read only BIO is much more efficient than
8505 a normal memory BIO. This was added because there are several times when
8506 an area of memory needs to be read from a BIO. The previous method was
8507 to create a memory BIO and write the data to it, this results in two
8508 copies of the data and an O(n^2) reading algorithm. There is a new
8509 function BIO_new_mem_buf() which creates a read only memory BIO from
8510 an area of memory. Also modified the PKCS#7 routines to use read only
8514 *) Bugfix: ssl23_get_client_hello did not work properly when called in
8515 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
8516 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
8517 but a retry condition occured while trying to read the rest.
8520 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
8521 NID_pkcs7_encrypted by default: this was wrong since this should almost
8522 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
8523 the encrypted data type: this is a more sensible place to put it and it
8524 allows the PKCS#12 code to be tidied up that duplicated this
8528 *) Changed obj_dat.pl script so it takes its input and output files on
8529 the command line. This should avoid shell escape redirection problems
8533 *) Initial support for certificate extension requests, these are included
8534 in things like Xenroll certificate requests. Included functions to allow
8535 extensions to be obtained and added.
8538 *) -crlf option to s_client and s_server for sending newlines as
8539 CRLF (as required by many protocols).
8542 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
8544 *) Install libRSAglue.a when OpenSSL is built with RSAref.
8545 [Ralf S. Engelschall]
8547 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
8548 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
8550 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
8554 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
8555 DH parameters/keys (q is lost during that conversion, but the resulting
8556 DH parameters contain its length).
8558 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
8559 much faster than DH_generate_parameters (which creates parameters
8560 where p = 2*q + 1), and also the smaller q makes DH computations
8561 much more efficient (160-bit exponentiation instead of 1024-bit
8562 exponentiation); so this provides a convenient way to support DHE
8563 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
8564 utter importance to use
8565 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8567 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
8568 when such DH parameters are used, because otherwise small subgroup
8569 attacks may become possible!
8572 *) Avoid memory leak in i2d_DHparams.
8575 *) Allow the -k option to be used more than once in the enc program:
8576 this allows the same encrypted message to be read by multiple recipients.
8579 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
8580 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
8581 it will always use the numerical form of the OID, even if it has a short
8585 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
8586 method only got called if p,q,dmp1,dmq1,iqmp components were present,
8587 otherwise bn_mod_exp was called. In the case of hardware keys for example
8588 no private key components need be present and it might store extra data
8589 in the RSA structure, which cannot be accessed from bn_mod_exp.
8590 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
8591 private key operations.
8594 *) Added support for SPARC Linux.
8597 *) pem_password_cb function type incompatibly changed from
8598 typedef int pem_password_cb(char *buf, int size, int rwflag);
8600 ....(char *buf, int size, int rwflag, void *userdata);
8601 so that applications can pass data to their callbacks:
8602 The PEM[_ASN1]_{read,write}... functions and macros now take an
8603 additional void * argument, which is just handed through whenever
8604 the password callback is called.
8605 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
8607 New function SSL_CTX_set_default_passwd_cb_userdata.
8609 Compatibility note: As many C implementations push function arguments
8610 onto the stack in reverse order, the new library version is likely to
8611 interoperate with programs that have been compiled with the old
8612 pem_password_cb definition (PEM_whatever takes some data that
8613 happens to be on the stack as its last argument, and the callback
8614 just ignores this garbage); but there is no guarantee whatsoever that
8617 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
8618 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
8619 problems not only on Windows, but also on some Unix platforms.
8620 To avoid problematic command lines, these definitions are now in an
8621 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
8622 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
8625 *) MIPS III/IV assembler module is reimplemented.
8628 *) More DES library cleanups: remove references to srand/rand and
8629 delete an unused file.
8632 *) Add support for the the free Netwide assembler (NASM) under Win32,
8633 since not many people have MASM (ml) and it can be hard to obtain.
8634 This is currently experimental but it seems to work OK and pass all
8635 the tests. Check out INSTALL.W32 for info.
8638 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
8639 without temporary keys kept an extra copy of the server key,
8640 and connections with temporary keys did not free everything in case
8644 *) New function RSA_check_key and new openssl rsa option -check
8645 for verifying the consistency of RSA keys.
8646 [Ulf Moeller, Bodo Moeller]
8648 *) Various changes to make Win32 compile work:
8649 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
8650 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
8651 comparison" warnings.
8652 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
8655 *) Add a debugging option to PKCS#5 v2 key generation function: when
8656 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
8657 derived keys are printed to stderr.
8660 *) Copy the flags in ASN1_STRING_dup().
8661 [Roman E. Pavlov <pre@mo.msk.ru>]
8663 *) The x509 application mishandled signing requests containing DSA
8664 keys when the signing key was also DSA and the parameters didn't match.
8666 It was supposed to omit the parameters when they matched the signing key:
8667 the verifying software was then supposed to automatically use the CA's
8668 parameters if they were absent from the end user certificate.
8670 Omitting parameters is no longer recommended. The test was also
8671 the wrong way round! This was probably due to unusual behaviour in
8672 EVP_cmp_parameters() which returns 1 if the parameters match.
8673 This meant that parameters were omitted when they *didn't* match and
8674 the certificate was useless. Certificates signed with 'ca' didn't have
8676 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
8678 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
8679 The interface is as follows:
8680 Applications can use
8681 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
8682 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
8683 "off" is now the default.
8684 The library internally uses
8685 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
8686 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
8687 to disable memory-checking temporarily.
8689 Some inconsistent states that previously were possible (and were
8690 even the default) are now avoided.
8692 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
8693 with each memory chunk allocated; this is occasionally more helpful
8694 than just having a counter.
8696 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
8698 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
8702 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
8703 which largely parallels "options", but is for changing API behaviour,
8704 whereas "options" are about protocol behaviour.
8705 Initial "mode" flags are:
8707 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
8708 a single record has been written.
8709 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
8710 retries use the same buffer location.
8711 (But all of the contents must be
8715 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
8718 *) Fix problems with no-hmac etc.
8719 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
8721 *) New functions RSA_get_default_method(), RSA_set_method() and
8722 RSA_get_method(). These allows replacement of RSA_METHODs without having
8723 to mess around with the internals of an RSA structure.
8726 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
8727 Also really enable memory leak checks in openssl.c and in some
8729 [Chad C. Mulligan, Bodo Moeller]
8731 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
8732 up the length of negative integers. This has now been simplified to just
8733 store the length when it is first determined and use it later, rather
8734 than trying to keep track of where data is copied and updating it to
8736 [Steve Henson, reported by Brien Wheeler
8737 <bwheeler@authentica-security.com>]
8739 *) Add a new function PKCS7_signatureVerify. This allows the verification
8740 of a PKCS#7 signature but with the signing certificate passed to the
8741 function itself. This contrasts with PKCS7_dataVerify which assumes the
8742 certificate is present in the PKCS#7 structure. This isn't always the
8743 case: certificates can be omitted from a PKCS#7 structure and be
8744 distributed by "out of band" means (such as a certificate database).
8747 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
8748 function prototypes in pem.h, also change util/mkdef.pl to add the
8749 necessary function names.
8752 *) mk1mf.pl (used by Windows builds) did not properly read the
8753 options set by Configure in the top level Makefile, and Configure
8754 was not even able to write more than one option correctly.
8755 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
8758 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
8759 file to be loaded from a BIO or FILE pointer. The BIO version will
8760 for example allow memory BIOs to contain config info.
8763 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
8764 Whoever hopes to achieve shared-library compatibility across versions
8765 must use this, not the compile-time macro.
8766 (Exercise 0.9.4: Which is the minimum library version required by
8768 Note: All this applies only to multi-threaded programs, others don't
8772 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
8773 through a BIO pair triggered the default case, i.e.
8774 SSLerr(...,SSL_R_UNKNOWN_STATE).
8777 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
8778 can use the SSL library even if none of the specific BIOs is
8782 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
8783 for the encoded length.
8784 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
8786 *) Add initial documentation of the X509V3 functions.
8789 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
8790 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
8791 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
8792 secure PKCS#8 private key format with a high iteration count.
8795 *) Fix determination of Perl interpreter: A perl or perl5
8796 _directory_ in $PATH was also accepted as the interpreter.
8797 [Ralf S. Engelschall]
8799 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
8800 wrong with it but it was very old and did things like calling
8801 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
8805 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
8806 to use the new extension code.
8809 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
8810 with macros. This should make it easier to change their form, add extra
8811 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
8815 *) Add to configuration table a new entry that can specify an alternative
8816 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
8817 according to Mark Crispin <MRC@Panda.COM>.
8821 *) DES CBC did not update the IV. Weird.
8824 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
8825 Changing the behaviour of the former might break existing programs --
8826 where IV updating is needed, des_ncbc_encrypt can be used.
8829 *) When bntest is run from "make test" it drives bc to check its
8830 calculations, as well as internally checking them. If an internal check
8831 fails, it needs to cause bc to give a non-zero result or make test carries
8832 on without noticing the failure. Fixed.
8835 *) DES library cleanups.
8838 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
8839 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
8840 ciphers. NOTE: although the key derivation function has been verified
8841 against some published test vectors it has not been extensively tested
8842 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
8846 *) Instead of "mkdir -p", which is not fully portable, use new
8847 Perl script "util/mkdir-p.pl".
8850 *) Rewrite the way password based encryption (PBE) is handled. It used to
8851 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
8852 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
8853 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
8854 the 'parameter' field of the AlgorithmIdentifier is passed to the
8855 underlying key generation function so it must do its own ASN1 parsing.
8856 This has also changed the EVP_PBE_CipherInit() function which now has a
8857 'parameter' argument instead of literal salt and iteration count values
8858 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
8861 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
8862 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
8863 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
8864 KEY" because this clashed with PKCS#8 unencrypted string. Since this
8865 value was just used as a "magic string" and not used directly its
8866 value doesn't matter.
8869 *) Introduce some semblance of const correctness to BN. Shame C doesn't
8873 *) "linux-sparc64" configuration (ultrapenguin).
8874 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
8875 "linux-sparc" configuration.
8876 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
8878 *) config now generates no-xxx options for missing ciphers.
8881 *) Support the EBCDIC character set (work in progress).
8882 File ebcdic.c not yet included because it has a different license.
8883 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8885 *) Support BS2000/OSD-POSIX.
8886 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
8888 *) Make callbacks for key generation use void * instead of char *.
8891 *) Make S/MIME samples compile (not yet tested).
8894 *) Additional typesafe stacks.
8897 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
8901 Changes between 0.9.3 and 0.9.3a [29 May 1999]
8903 *) New configuration variant "sco5-gcc".
8905 *) Updated some demos.
8906 [Sean O Riordain, Wade Scholine]
8908 *) Add missing BIO_free at exit of pkcs12 application.
8911 *) Fix memory leak in conf.c.
8914 *) Updates for Win32 to assembler version of MD5.
8917 *) Set #! path to perl in apps/der_chop to where we found it
8918 instead of using a fixed path.
8921 *) SHA library changes for irix64-mips4-cc.
8924 *) Improvements for VMS support.
8928 Changes between 0.9.2b and 0.9.3 [24 May 1999]
8930 *) Bignum library bug fix. IRIX 6 passes "make test" now!
8931 This also avoids the problems with SC4.2 and unpatched SC5.
8932 [Andy Polyakov <appro@fy.chalmers.se>]
8934 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
8935 These are required because of the typesafe stack would otherwise break
8936 existing code. If old code used a structure member which used to be STACK
8937 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
8938 sk_num or sk_value it would produce an error because the num, data members
8939 are not present in STACK_OF. Now it just produces a warning. sk_set
8940 replaces the old method of assigning a value to sk_value
8941 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
8942 that does this will no longer work (and should use sk_set instead) but
8943 this could be regarded as a "questionable" behaviour anyway.
8946 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
8947 correctly handle encrypted S/MIME data.
8950 *) Change type of various DES function arguments from des_cblock
8951 (which means, in function argument declarations, pointer to char)
8952 to des_cblock * (meaning pointer to array with 8 char elements),
8953 which allows the compiler to do more typechecking; it was like
8954 that back in SSLeay, but with lots of ugly casts.
8956 Introduce new type const_des_cblock.
8959 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
8960 problems: find RecipientInfo structure that matches recipient certificate
8961 and initialise the ASN1 structures properly based on passed cipher.
8964 *) Belatedly make the BN tests actually check the results.
8967 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
8968 to and from BNs: it was completely broken. New compilation option
8969 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
8970 key elements as negative integers.
8973 *) Reorganize and speed up MD5.
8974 [Andy Polyakov <appro@fy.chalmers.se>]
8977 [Richard Levitte <richard@levitte.org>]
8979 *) New option -out to asn1parse to allow the parsed structure to be
8980 output to a file. This is most useful when combined with the -strparse
8981 option to examine the output of things like OCTET STRINGS.
8984 *) Make SSL library a little more fool-proof by not requiring any longer
8985 that SSL_set_{accept,connect}_state be called before
8986 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
8987 in many applications because usually everything *appeared* to work as
8988 intended anyway -- now it really works as intended).
8991 *) Move openssl.cnf out of lib/.
8994 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
8995 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
8996 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
8997 [Ralf S. Engelschall]
8999 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
9000 handle PKCS#7 enveloped data properly.
9001 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
9003 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
9004 copying pointers. The cert_st handling is changed by this in
9005 various ways (and thus what used to be known as ctx->default_cert
9006 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
9007 any longer when s->cert does not give us what we need).
9008 ssl_cert_instantiate becomes obsolete by this change.
9009 As soon as we've got the new code right (possibly it already is?),
9010 we have solved a couple of bugs of the earlier code where s->cert
9011 was used as if it could not have been shared with other SSL structures.
9013 Note that using the SSL API in certain dirty ways now will result
9014 in different behaviour than observed with earlier library versions:
9015 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
9016 does not influence s as it used to.
9018 In order to clean up things more thoroughly, inside SSL_SESSION
9019 we don't use CERT any longer, but a new structure SESS_CERT
9020 that holds per-session data (if available); currently, this is
9021 the peer's certificate chain and, for clients, the server's certificate
9022 and temporary key. CERT holds only those values that can have
9023 meaningful defaults in an SSL_CTX.
9026 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
9027 from the internal representation. Various PKCS#7 fixes: remove some
9028 evil casts and set the enc_dig_alg field properly based on the signing
9032 *) Allow PKCS#12 password to be set from the command line or the
9033 environment. Let 'ca' get its config file name from the environment
9034 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
9038 *) Allow certificate policies extension to use an IA5STRING for the
9039 organization field. This is contrary to the PKIX definition but
9040 VeriSign uses it and IE5 only recognises this form. Document 'x509'
9044 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
9045 without disallowing inline assembler and the like for non-pedantic builds.
9048 *) Support Borland C++ builder.
9049 [Janez Jere <jj@void.si>, modified by Ulf Möller]
9054 *) SHA-1 cleanups and performance enhancements.
9055 [Andy Polyakov <appro@fy.chalmers.se>]
9057 *) Sparc v8plus assembler for the bignum library.
9058 [Andy Polyakov <appro@fy.chalmers.se>]
9060 *) Accept any -xxx and +xxx compiler options in Configure.
9063 *) Update HPUX configuration.
9066 *) Add missing sk_<type>_unshift() function to safestack.h
9067 [Ralf S. Engelschall]
9069 *) New function SSL_CTX_use_certificate_chain_file that sets the
9070 "extra_cert"s in addition to the certificate. (This makes sense
9071 only for "PEM" format files, as chains as a whole are not
9075 *) Support verify_depth from the SSL API.
9076 x509_vfy.c had what can be considered an off-by-one-error:
9077 Its depth (which was not part of the external interface)
9078 was actually counting the number of certificates in a chain;
9079 now it really counts the depth.
9082 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
9083 instead of X509err, which often resulted in confusing error
9084 messages since the error codes are not globally unique
9085 (e.g. an alleged error in ssl3_accept when a certificate
9086 didn't match the private key).
9088 *) New function SSL_CTX_set_session_id_context that allows to set a default
9089 value (so that you don't need SSL_set_session_id_context for each
9090 connection using the SSL_CTX).
9093 *) OAEP decoding bug fix.
9096 *) Support INSTALL_PREFIX for package builders, as proposed by
9100 *) New Configure options "threads" and "no-threads". For systems
9101 where the proper compiler options are known (currently Solaris
9102 and Linux), "threads" is the default.
9105 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
9108 *) Install various scripts to $(OPENSSLDIR)/misc, not to
9109 $(INSTALLTOP)/bin -- they shouldn't clutter directories
9110 such as /usr/local/bin.
9113 *) "make linux-shared" to build shared libraries.
9114 [Niels Poppe <niels@netbox.org>]
9116 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
9119 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
9120 extension adding in x509 utility.
9123 *) Remove NOPROTO sections and error code comments.
9126 *) Partial rewrite of the DEF file generator to now parse the ANSI
9130 *) New Configure options --prefix=DIR and --openssldir=DIR.
9133 *) Complete rewrite of the error code script(s). It is all now handled
9134 by one script at the top level which handles error code gathering,
9135 header rewriting and C source file generation. It should be much better
9136 than the old method: it now uses a modified version of Ulf's parser to
9137 read the ANSI prototypes in all header files (thus the old K&R definitions
9138 aren't needed for error creation any more) and do a better job of
9139 translating function codes into names. The old 'ASN1 error code imbedded
9140 in a comment' is no longer necessary and it doesn't use .err files which
9141 have now been deleted. Also the error code call doesn't have to appear all
9142 on one line (which resulted in some large lines...).
9145 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
9148 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
9149 0 (which usually indicates a closed connection), but continue reading.
9152 *) Fix some race conditions.
9155 *) Add support for CRL distribution points extension. Add Certificate
9156 Policies and CRL distribution points documentation.
9159 *) Move the autogenerated header file parts to crypto/opensslconf.h.
9162 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
9163 8 of keying material. Merlin has also confirmed interop with this fix
9164 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
9165 [Merlin Hughes <merlin@baltimore.ie>]
9167 *) Fix lots of warnings.
9168 [Richard Levitte <levitte@stacken.kth.se>]
9170 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
9171 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
9172 [Richard Levitte <levitte@stacken.kth.se>]
9174 *) Fix problems with sizeof(long) == 8.
9175 [Andy Polyakov <appro@fy.chalmers.se>]
9177 *) Change functions to ANSI C.
9180 *) Fix typos in error codes.
9181 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
9183 *) Remove defunct assembler files from Configure.
9186 *) SPARC v8 assembler BIGNUM implementation.
9187 [Andy Polyakov <appro@fy.chalmers.se>]
9189 *) Support for Certificate Policies extension: both print and set.
9190 Various additions to support the r2i method this uses.
9193 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
9194 return a const string when you are expecting an allocated buffer.
9197 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
9198 types DirectoryString and DisplayText.
9201 *) Add code to allow r2i extensions to access the configuration database,
9202 add an LHASH database driver and add several ctx helper functions.
9205 *) Fix an evil bug in bn_expand2() which caused various BN functions to
9206 fail when they extended the size of a BIGNUM.
9209 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
9210 support typesafe stack.
9213 *) Fix typo in SSL_[gs]et_options().
9214 [Nils Frostberg <nils@medcom.se>]
9216 *) Delete various functions and files that belonged to the (now obsolete)
9217 old X509V3 handling code.
9220 *) New Configure option "rsaref".
9223 *) Don't auto-generate pem.h.
9226 *) Introduce type-safe ASN.1 SETs.
9229 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
9230 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
9232 *) Introduce type-safe STACKs. This will almost certainly break lots of code
9233 that links with OpenSSL (well at least cause lots of warnings), but fear
9234 not: the conversion is trivial, and it eliminates loads of evil casts. A
9235 few STACKed things have been converted already. Feel free to convert more.
9236 In the fullness of time, I'll do away with the STACK type altogether.
9239 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
9240 specified in <certfile> by updating the entry in the index.txt file.
9241 This way one no longer has to edit the index.txt file manually for
9242 revoking a certificate. The -revoke option does the gory details now.
9243 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
9245 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
9246 `-text' option at all and this way the `-noout -text' combination was
9247 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
9248 [Ralf S. Engelschall]
9250 *) Make sure a corresponding plain text error message exists for the
9251 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
9252 verify callback function determined that a certificate was revoked.
9253 [Ralf S. Engelschall]
9255 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
9256 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
9257 all available cipers including rc5, which was forgotten until now.
9258 In order to let the testing shell script know which algorithms
9259 are available, a new (up to now undocumented) command
9260 "openssl list-cipher-commands" is used.
9263 *) Bugfix: s_client occasionally would sleep in select() when
9264 it should have checked SSL_pending() first.
9267 *) New functions DSA_do_sign and DSA_do_verify to provide access to
9268 the raw DSA values prior to ASN.1 encoding.
9271 *) Tweaks to Configure
9272 [Niels Poppe <niels@netbox.org>]
9274 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
9278 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
9281 *) New config option to avoid instructions that are illegal on the 80386.
9282 The default code is faster, but requires at least a 486.
9285 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
9286 SSL2_SERVER_VERSION (not used at all) macros, which are now the
9287 same as SSL2_VERSION anyway.
9290 *) New "-showcerts" option for s_client.
9293 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
9294 application. Various cleanups and fixes.
9297 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
9298 modify error routines to work internally. Add error codes and PBE init
9299 to library startup routines.
9302 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
9303 packing functions to asn1 and evp. Changed function names and error
9304 codes along the way.
9307 *) PKCS12 integration: and so it begins... First of several patches to
9308 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
9309 objects to objects.h
9312 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
9313 and display support for Thawte strong extranet extension.
9316 *) Add LinuxPPC support.
9317 [Jeff Dubrule <igor@pobox.org>]
9319 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
9320 bn_div_words in alpha.s.
9321 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
9323 *) Make sure the RSA OAEP test is skipped under -DRSAref because
9324 OAEP isn't supported when OpenSSL is built with RSAref.
9325 [Ulf Moeller <ulf@fitug.de>]
9327 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
9328 so they no longer are missing under -DNOPROTO.
9329 [Soren S. Jorvang <soren@t.dk>]
9332 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
9334 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
9335 doesn't work when the session is reused. Coming soon!
9338 *) Fix a security hole, that allows sessions to be reused in the wrong
9339 context thus bypassing client cert protection! All software that uses
9340 client certs and session caches in multiple contexts NEEDS PATCHING to
9341 allow session reuse! A fuller solution is in the works.
9342 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
9344 *) Some more source tree cleanups (removed obsolete files
9345 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
9346 permission on "config" script to be executable) and a fix for the INSTALL
9348 [Ulf Moeller <ulf@fitug.de>]
9350 *) Remove some legacy and erroneous uses of malloc, free instead of
9352 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
9354 *) Make rsa_oaep_test return non-zero on error.
9355 [Ulf Moeller <ulf@fitug.de>]
9357 *) Add support for native Solaris shared libraries. Configure
9358 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
9359 if someone would make that last step automatic.
9360 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
9362 *) ctx_size was not built with the right compiler during "make links". Fixed.
9365 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
9366 except NULL ciphers". This means the default cipher list will no longer
9367 enable NULL ciphers. They need to be specifically enabled e.g. with
9368 the string "DEFAULT:eNULL".
9371 *) Fix to RSA private encryption routines: if p < q then it would
9372 occasionally produce an invalid result. This will only happen with
9373 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
9376 *) Be less restrictive and allow also `perl util/perlpath.pl
9377 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
9378 because this way one can also use an interpreter named `perl5' (which is
9379 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
9380 installed as `perl').
9381 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9383 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
9384 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9386 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
9387 advapi32.lib to Win32 build and change the pem test comparision
9388 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
9389 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
9390 and crypto/des/ede_cbcm_enc.c.
9393 *) DES quad checksum was broken on big-endian architectures. Fixed.
9396 *) Comment out two functions in bio.h that aren't implemented. Fix up the
9397 Win32 test batch file so it (might) work again. The Win32 test batch file
9398 is horrible: I feel ill....
9401 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
9402 in e_os.h. Audit of header files to check ANSI and non ANSI
9403 sections: 10 functions were absent from non ANSI section and not exported
9404 from Windows DLLs. Fixed up libeay.num for new functions.
9407 *) Make `openssl version' output lines consistent.
9408 [Ralf S. Engelschall]
9410 *) Fix Win32 symbol export lists for BIO functions: Added
9411 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
9412 to ms/libeay{16,32}.def.
9413 [Ralf S. Engelschall]
9415 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
9416 fine under Unix and passes some trivial tests I've now added. But the
9417 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
9418 added to make sure no one expects that this stuff really works in the
9419 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
9420 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
9422 [Ralf S. Engelschall]
9424 *) Fix the generation of two part addresses in perl.
9425 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
9427 *) Add config entry for Linux on MIPS.
9428 [John Tobey <jtobey@channel1.com>]
9430 *) Make links whenever Configure is run, unless we are on Windoze.
9433 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
9434 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
9438 *) Add a useful kludge to allow package maintainers to specify compiler and
9439 other platforms details on the command line without having to patch the
9440 Configure script everytime: One now can use ``perl Configure
9441 <id>:<details>'', i.e. platform ids are allowed to have details appended
9442 to them (seperated by colons). This is treated as there would be a static
9443 pre-configured entry in Configure's %table under key <id> with value
9444 <details> and ``perl Configure <id>'' is called. So, when you want to
9445 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
9446 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
9447 now, which overrides the FreeBSD-elf entry on-the-fly.
9448 [Ralf S. Engelschall]
9450 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
9453 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
9454 on the `perl Configure ...' command line. This way one can compile
9455 OpenSSL libraries with Position Independent Code (PIC) which is needed
9456 for linking it into DSOs.
9457 [Ralf S. Engelschall]
9459 *) Remarkably, export ciphers were totally broken and no-one had noticed!
9463 *) Cleaned up the LICENSE document: The official contact for any license
9464 questions now is the OpenSSL core team under openssl-core@openssl.org.
9465 And add a paragraph about the dual-license situation to make sure people
9466 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
9467 to the OpenSSL toolkit.
9468 [Ralf S. Engelschall]
9470 *) General source tree makefile cleanups: Made `making xxx in yyy...'
9471 display consistent in the source tree and replaced `/bin/rm' by `rm'.
9472 Additonally cleaned up the `make links' target: Remove unnecessary
9473 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
9474 to speed processing and no longer clutter the display with confusing
9475 stuff. Instead only the actually done links are displayed.
9476 [Ralf S. Engelschall]
9478 *) Permit null encryption ciphersuites, used for authentication only. It used
9479 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
9480 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
9484 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
9485 signed attributes when verifying signatures (this would break them),
9486 the detached data encoding was wrong and public keys obtained using
9487 X509_get_pubkey() weren't freed.
9490 *) Add text documentation for the BUFFER functions. Also added a work around
9491 to a Win95 console bug. This was triggered by the password read stuff: the
9492 last character typed gets carried over to the next fread(). If you were
9493 generating a new cert request using 'req' for example then the last
9494 character of the passphrase would be CR which would then enter the first
9498 *) Added the new `Includes OpenSSL Cryptography Software' button as
9499 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
9500 button and can be used by applications based on OpenSSL to show the
9501 relationship to the OpenSSL project.
9502 [Ralf S. Engelschall]
9504 *) Remove confusing variables in function signatures in files
9505 ssl/ssl_lib.c and ssl/ssl.h.
9506 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9508 *) Don't install bss_file.c under PREFIX/include/
9509 [Lennart Bong <lob@kulthea.stacken.kth.se>]
9511 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
9512 functions that return function pointers and has support for NT specific
9513 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
9514 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
9515 unsigned to signed types: this was killing the Win32 compile.
9518 *) Add new certificate file to stack functions,
9519 SSL_add_dir_cert_subjects_to_stack() and
9520 SSL_add_file_cert_subjects_to_stack(). These largely supplant
9521 SSL_load_client_CA_file(), and can be used to add multiple certs easily
9522 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
9523 This means that Apache-SSL and similar packages don't have to mess around
9524 to add as many CAs as they want to the preferred list.
9527 *) Experiment with doxygen documentation. Currently only partially applied to
9529 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
9530 openssl.doxy as the configuration file.
9533 *) Get rid of remaining C++-style comments which strict C compilers hate.
9534 [Ralf S. Engelschall, pointed out by Carlos Amengual]
9536 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
9537 compiled in by default: it has problems with large keys.
9540 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
9541 DH private keys and/or callback functions which directly correspond to
9542 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
9543 is needed for applications which have to configure certificates on a
9544 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
9546 For the RSA certificate situation is makes no difference, but
9547 for the DSA certificate situation this fixes the "no shared cipher"
9548 problem where the OpenSSL cipher selection procedure failed because the
9549 temporary keys were not overtaken from the context and the API provided
9550 no way to reconfigure them.
9551 The new functions now let applications reconfigure the stuff and they
9552 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
9553 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
9554 non-public-API function ssl_cert_instantiate() is used as a helper
9555 function and also to reduce code redundancy inside ssl_rsa.c.
9556 [Ralf S. Engelschall]
9558 *) Move s_server -dcert and -dkey options out of the undocumented feature
9559 area because they are useful for the DSA situation and should be
9560 recognized by the users.
9561 [Ralf S. Engelschall]
9563 *) Fix the cipher decision scheme for export ciphers: the export bits are
9564 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
9565 SSL_EXP_MASK. So, the original variable has to be used instead of the
9566 already masked variable.
9567 [Richard Levitte <levitte@stacken.kth.se>]
9569 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
9570 [Richard Levitte <levitte@stacken.kth.se>]
9572 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
9573 from `int' to `unsigned int' because it's a length and initialized by
9574 EVP_DigestFinal() which expects an `unsigned int *'.
9575 [Richard Levitte <levitte@stacken.kth.se>]
9577 *) Don't hard-code path to Perl interpreter on shebang line of Configure
9578 script. Instead use the usual Shell->Perl transition trick.
9579 [Ralf S. Engelschall]
9581 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
9582 (in addition to RSA certificates) to match the behaviour of `openssl dsa
9583 -noout -modulus' as it's already the case for `openssl rsa -noout
9584 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
9585 currently the public key is printed (a decision which was already done by
9586 `openssl dsa -modulus' in the past) which serves a similar purpose.
9587 Additionally the NO_RSA no longer completely removes the whole -modulus
9588 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
9590 [Ralf S. Engelschall]
9592 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
9593 BIO. See the source (crypto/evp/bio_ok.c) for more info.
9594 [Arne Ansper <arne@ats.cyber.ee>]
9596 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
9597 to be added. Now both 'req' and 'ca' can use new objects defined in the
9601 *) Add cool BIO that does syslog (or event log on NT).
9602 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
9604 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
9605 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
9606 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
9607 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
9610 *) Add preliminary config info for new extension code.
9613 *) Make RSA_NO_PADDING really use no padding.
9614 [Ulf Moeller <ulf@fitug.de>]
9616 *) Generate errors when private/public key check is done.
9619 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
9620 for some CRL extensions and new objects added.
9623 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
9624 key usage extension and fuller support for authority key id.
9627 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
9628 padding method for RSA, which is recommended for new applications in PKCS
9629 #1 v2.0 (RFC 2437, October 1998).
9630 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
9631 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
9632 against Bleichbacher's attack on RSA.
9633 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
9636 *) Updates to the new SSL compression code
9637 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9639 *) Fix so that the version number in the master secret, when passed
9640 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
9641 (because the server will not accept higher), that the version number
9642 is 0x03,0x01, not 0x03,0x00
9643 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9645 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
9646 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
9647 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
9650 *) Support for RAW extensions where an arbitrary extension can be
9651 created by including its DER encoding. See apps/openssl.cnf for
9655 *) Make sure latest Perl versions don't interpret some generated C array
9656 code as Perl array code in the crypto/err/err_genc.pl script.
9657 [Lars Weber <3weber@informatik.uni-hamburg.de>]
9659 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
9660 not many people have the assembler. Various Win32 compilation fixes and
9661 update to the INSTALL.W32 file with (hopefully) more accurate Win32
9665 *) Modify configure script 'Configure' to automatically create crypto/date.h
9666 file under Win32 and also build pem.h from pem.org. New script
9667 util/mkfiles.pl to create the MINFO file on environments that can't do a
9668 'make files': perl util/mkfiles.pl >MINFO should work.
9671 *) Major rework of DES function declarations, in the pursuit of correctness
9672 and purity. As a result, many evil casts evaporated, and some weirdness,
9673 too. You may find this causes warnings in your code. Zapping your evil
9674 casts will probably fix them. Mostly.
9677 *) Fix for a typo in asn1.h. Bug fix to object creation script
9678 obj_dat.pl. It considered a zero in an object definition to mean
9679 "end of object": none of the objects in objects.h have any zeros
9680 so it wasn't spotted.
9681 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
9683 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
9684 Masking (CBCM). In the absence of test vectors, the best I have been able
9685 to do is check that the decrypt undoes the encrypt, so far. Send me test
9686 vectors if you have them.
9689 *) Correct calculation of key length for export ciphers (too much space was
9690 allocated for null ciphers). This has not been tested!
9693 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
9694 message is now correct (it understands "crypto" and "ssl" on its
9695 command line). There is also now an "update" option. This will update
9696 the util/ssleay.num and util/libeay.num files with any new functions.
9698 perl util/mkdef.pl crypto ssl update
9699 it will update them.
9702 *) Overhauled the Perl interface (perl/*):
9703 - ported BN stuff to OpenSSL's different BN library
9704 - made the perl/ source tree CVS-aware
9705 - renamed the package from SSLeay to OpenSSL (the files still contain
9706 their history because I've copied them in the repository)
9707 - removed obsolete files (the test scripts will be replaced
9708 by better Test::Harness variants in the future)
9709 [Ralf S. Engelschall]
9711 *) First cut for a very conservative source tree cleanup:
9712 1. merge various obsolete readme texts into doc/ssleay.txt
9713 where we collect the old documents and readme texts.
9714 2. remove the first part of files where I'm already sure that we no
9715 longer need them because of three reasons: either they are just temporary
9716 files which were left by Eric or they are preserved original files where
9717 I've verified that the diff is also available in the CVS via "cvs diff
9718 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
9719 the crypto/md/ stuff).
9720 [Ralf S. Engelschall]
9722 *) More extension code. Incomplete support for subject and issuer alt
9723 name, issuer and authority key id. Change the i2v function parameters
9724 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
9725 what that's for :-) Fix to ASN1 macro which messed up
9726 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
9729 *) Preliminary support for ENUMERATED type. This is largely copied from the
9733 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
9734 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9736 *) Make sure `make rehash' target really finds the `openssl' program.
9737 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
9739 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
9740 like to hear about it if this slows down other processors.
9743 *) Add CygWin32 platform information to Configure script.
9744 [Alan Batie <batie@aahz.jf.intel.com>]
9746 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
9747 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
9749 *) New program nseq to manipulate netscape certificate sequences
9752 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
9756 *) Fixes to BN code. Previously the default was to define BN_RECURSION
9757 but the BN code had some problems that would cause failures when
9758 doing certificate verification and some other functions.
9759 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
9761 *) Add ASN1 and PEM code to support netscape certificate sequences.
9764 *) Add ASN1 and PEM code to support netscape certificate sequences.
9767 *) Add several PKIX and private extended key usage OIDs.
9770 *) Modify the 'ca' program to handle the new extension code. Modify
9771 openssl.cnf for new extension format, add comments.
9774 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
9775 and add a sample to openssl.cnf so req -x509 now adds appropriate
9779 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
9780 error code, add initial support to X509_print() and x509 application.
9783 *) Takes a deep breath and start addding X509 V3 extension support code. Add
9784 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
9785 stuff is currently isolated and isn't even compiled yet.
9788 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
9789 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
9790 Removed the versions check from X509 routines when loading extensions:
9791 this allows certain broken certificates that don't set the version
9792 properly to be processed.
9795 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
9796 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
9797 can still be regenerated with "make depend".
9800 *) Spelling mistake in C version of CAST-128.
9801 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
9803 *) Changes to the error generation code. The perl script err-code.pl
9804 now reads in the old error codes and retains the old numbers, only
9805 adding new ones if necessary. It also only changes the .err files if new
9806 codes are added. The makefiles have been modified to only insert errors
9807 when needed (to avoid needlessly modifying header files). This is done
9808 by only inserting errors if the .err file is newer than the auto generated
9809 C file. To rebuild all the error codes from scratch (the old behaviour)
9810 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
9811 or delete all the .err files.
9814 *) CAST-128 was incorrectly implemented for short keys. The C version has
9815 been fixed, but is untested. The assembler versions are also fixed, but
9816 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
9817 to regenerate it if needed.
9818 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
9819 Hagino <itojun@kame.net>]
9821 *) File was opened incorrectly in randfile.c.
9822 [Ulf Möller <ulf@fitug.de>]
9824 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
9825 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
9826 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
9827 al: it's just almost always a UTCTime. Note this patch adds new error
9828 codes so do a "make errors" if there are problems.
9831 *) Correct Linux 1 recognition in config.
9832 [Ulf Möller <ulf@fitug.de>]
9834 *) Remove pointless MD5 hash when using DSA keys in ca.
9835 [Anonymous <nobody@replay.com>]
9837 *) Generate an error if given an empty string as a cert directory. Also
9838 generate an error if handed NULL (previously returned 0 to indicate an
9839 error, but didn't set one).
9840 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
9842 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
9845 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
9846 parameters. This was causing a warning which killed off the Win32 compile.
9849 *) Remove C++ style comments from crypto/bn/bn_local.h.
9850 [Neil Costigan <neil.costigan@celocom.com>]
9852 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
9853 based on a text string, looking up short and long names and finally
9854 "dot" format. The "dot" format stuff didn't work. Added new function
9855 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
9856 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
9857 OID is not part of the table.
9860 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
9861 X509_LOOKUP_by_alias().
9864 *) Sort openssl functions by name.
9867 *) Get the gendsa program working (hopefully) and add it to app list. Remove
9868 encryption from sample DSA keys (in case anyone is interested the password
9872 *) Make _all_ *_free functions accept a NULL pointer.
9873 [Frans Heymans <fheymans@isaserver.be>]
9875 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
9877 [Anonymous <nobody@replay.com>]
9879 *) s_server should send the CAfile as acceptable CAs, not its own cert.
9880 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9882 *) Don't blow it for numeric -newkey arguments to apps/req.
9883 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
9885 *) Temp key "for export" tests were wrong in s3_srvr.c.
9886 [Anonymous <nobody@replay.com>]
9888 *) Add prototype for temp key callback functions
9889 SSL_CTX_set_tmp_{rsa,dh}_callback().
9892 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
9893 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
9896 *) X509_name_add_entry() freed the wrong thing after an error.
9897 [Arne Ansper <arne@ats.cyber.ee>]
9899 *) rsa_eay.c would attempt to free a NULL context.
9900 [Arne Ansper <arne@ats.cyber.ee>]
9902 *) BIO_s_socket() had a broken should_retry() on Windoze.
9903 [Arne Ansper <arne@ats.cyber.ee>]
9905 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
9906 [Arne Ansper <arne@ats.cyber.ee>]
9908 *) Make sure the already existing X509_STORE->depth variable is initialized
9909 in X509_STORE_new(), but document the fact that this variable is still
9910 unused in the certificate verification process.
9911 [Ralf S. Engelschall]
9913 *) Fix the various library and apps files to free up pkeys obtained from
9914 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
9917 *) Fix reference counting in X509_PUBKEY_get(). This makes
9918 demos/maurice/example2.c work, amongst others, probably.
9919 [Steve Henson and Ben Laurie]
9921 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
9922 `openssl' and second, the shortcut symlinks for the `openssl <command>'
9923 are no longer created. This way we have a single and consistent command
9924 line interface `openssl <command>', similar to `cvs <command>'.
9925 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
9927 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
9928 BIT STRING wrapper always have zero unused bits.
9931 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
9934 *) Make the top-level INSTALL documentation easier to understand.
9937 *) Makefiles updated to exit if an error occurs in a sub-directory
9938 make (including if user presses ^C) [Paul Sutton]
9940 *) Make Montgomery context stuff explicit in RSA data structure.
9943 *) Fix build order of pem and err to allow for generated pem.h.
9946 *) Fix renumbering bug in X509_NAME_delete_entry().
9949 *) Enhanced the err-ins.pl script so it makes the error library number
9950 global and can add a library name. This is needed for external ASN1 and
9951 other error libraries.
9954 *) Fixed sk_insert which never worked properly.
9957 *) Fix ASN1 macros so they can handle indefinite length construted
9958 EXPLICIT tags. Some non standard certificates use these: they can now
9962 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
9963 into a single doc/ssleay.txt bundle. This way the information is still
9964 preserved but no longer messes up this directory. Now it's new room for
9965 the new set of documenation files.
9966 [Ralf S. Engelschall]
9968 *) SETs were incorrectly DER encoded. This was a major pain, because they
9969 shared code with SEQUENCEs, which aren't coded the same. This means that
9970 almost everything to do with SETs or SEQUENCEs has either changed name or
9971 number of arguments.
9972 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
9974 *) Fix test data to work with the above.
9977 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
9978 was already fixed by Eric for 0.9.1 it seems.
9979 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
9981 *) Autodetect FreeBSD3.
9984 *) Fix various bugs in Configure. This affects the following platforms:
9988 unixware-2.0-pentium
9992 *) Eliminate generated files from CVS. Reorder tests to regenerate files
9993 before they are needed.
9996 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
10000 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
10002 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
10003 changed SSLeay to OpenSSL in version strings.
10004 [Ralf S. Engelschall]
10006 *) Some fixups to the top-level documents.
10009 *) Fixed the nasty bug where rsaref.h was not found under compile-time
10010 because the symlink to include/ was missing.
10011 [Ralf S. Engelschall]
10013 *) Incorporated the popular no-RSA/DSA-only patches
10014 which allow to compile a RSA-free SSLeay.
10015 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
10017 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
10018 when "ssleay" is still not found.
10019 [Ralf S. Engelschall]
10021 *) Added more platforms to Configure: Cray T3E, HPUX 11,
10022 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
10024 *) Updated the README file.
10025 [Ralf S. Engelschall]
10027 *) Added various .cvsignore files in the CVS repository subdirs
10028 to make a "cvs update" really silent.
10029 [Ralf S. Engelschall]
10031 *) Recompiled the error-definition header files and added
10032 missing symbols to the Win32 linker tables.
10033 [Ralf S. Engelschall]
10035 *) Cleaned up the top-level documents;
10036 o new files: CHANGES and LICENSE
10037 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
10038 o merged COPYRIGHT into LICENSE
10039 o removed obsolete TODO file
10040 o renamed MICROSOFT to INSTALL.W32
10041 [Ralf S. Engelschall]
10043 *) Removed dummy files from the 0.9.1b source tree:
10044 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
10045 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
10046 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
10047 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
10048 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
10049 [Ralf S. Engelschall]
10051 *) Added various platform portability fixes.
10054 *) The Genesis of the OpenSSL rpject:
10055 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
10056 Young and Tim J. Hudson created while they were working for C2Net until
10058 [The OpenSSL Project]
10061 Changes between 0.9.0b and 0.9.1b [not released]
10063 *) Updated a few CA certificates under certs/
10066 *) Changed some BIGNUM api stuff.
10069 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
10070 DGUX x86, Linux Alpha, etc.
10073 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
10074 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
10078 *) Add -strparse option to asn1pars program which parses nested
10080 [Dr Stephen Henson <shenson@bigfoot.com>]
10082 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
10085 *) DSA fix for "ca" program.
10088 *) Added "-genkey" option to "dsaparam" program.
10091 *) Added RIPE MD160 (rmd160) message digest.
10094 *) Added -a (all) option to "ssleay version" command.
10097 *) Added PLATFORM define which is the id given to Configure.
10100 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
10103 *) Extended the ASN.1 parser routines.
10106 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
10109 *) Added a BN_CTX to the BN library.
10112 *) Fixed the weak key values in DES library
10115 *) Changed API in EVP library for cipher aliases.
10118 *) Added support for RC2/64bit cipher.
10121 *) Converted the lhash library to the crypto/mem.c functions.
10124 *) Added more recognized ASN.1 object ids.
10127 *) Added more RSA padding checks for SSL/TLS.
10130 *) Added BIO proxy/filter functionality.
10133 *) Added extra_certs to SSL_CTX which can be used
10134 send extra CA certificates to the client in the CA cert chain sending
10135 process. It can be configured with SSL_CTX_add_extra_chain_cert().
10138 *) Now Fortezza is denied in the authentication phase because
10139 this is key exchange mechanism is not supported by SSLeay at all.
10142 *) Additional PKCS1 checks.
10145 *) Support the string "TLSv1" for all TLS v1 ciphers.
10148 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
10149 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
10152 *) Fixed a few memory leaks.
10155 *) Fixed various code and comment typos.
10158 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
10159 bytes sent in the client random.
10160 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob