5 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
7 *) Don't set val to NULL when freeing up structures, it is freed up by
8 underlying code. If sizeof(void *) > sizeof(long) this can result in
9 zeroing past the valid field. (CVE-2009-0789)
10 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
12 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
13 checked correctly. This would allow some invalid signed attributes to
14 appear to verify correctly. (CVE-2009-0591)
15 [Ivan Nestlerode <inestlerode@us.ibm.com>]
17 *) Reject UniversalString and BMPString types with invalid lengths. This
18 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
19 a legal length. (CVE-2009-0590)
22 *) Set S/MIME signing as the default purpose rather than setting it
23 unconditionally. This allows applications to override it at the store
27 *) Permit restricted recursion of ASN1 strings. This is needed in practice
28 to handle some structures.
31 *) Improve efficiency of mem_gets: don't search whole buffer each time
33 [Jeremy Shapiro <jnshapir@us.ibm.com>]
35 *) New -hex option for openssl rand.
38 *) Print out UTF8String and NumericString when parsing ASN1.
41 *) Support NumericString type for name components.
44 *) Allow CC in the environment to override the automatically chosen
45 compiler. Note that nothing is done to ensure flags work with the
49 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
51 *) Properly check EVP_VerifyFinal() and similar return values
53 [Ben Laurie, Bodo Moeller, Google Security Team]
55 *) Enable TLS extensions by default.
58 *) Allow the CHIL engine to be loaded, whether the application is
59 multithreaded or not. (This does not release the developer from the
60 obligation to set up the dynamic locking callbacks.)
61 [Sander Temme <sander@temme.net>]
63 *) Use correct exit code if there is an error in dgst command.
64 [Steve Henson; problem pointed out by Roland Dirlewanger]
66 *) Tweak Configure so that you need to say "experimental-jpake" to enable
67 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
70 *) Add experimental JPAKE support, including demo authentication in
71 s_client and s_server.
74 *) Set the comparison function in v3_addr_canonize().
75 [Rob Austein <sra@hactrn.net>]
77 *) Add support for XMPP STARTTLS in s_client.
78 [Philip Paeps <philip@freebsd.org>]
80 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
81 to ensure that even with this option, only ciphersuites in the
82 server's preference list will be accepted. (Note that the option
83 applies only when resuming a session, so the earlier behavior was
84 just about the algorithm choice for symmetric cryptography.)
87 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
89 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
90 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
93 *) The fix in 0.9.8c that supposedly got rid of unsafe
94 double-checked locking was incomplete for RSA blinding,
95 addressing just one layer of what turns out to have been
96 doubly unsafe triple-checked locking.
98 So now fix this for real by retiring the MONT_HELPER macro
99 in crypto/rsa/rsa_eay.c.
101 [Bodo Moeller; problem pointed out by Marius Schilder]
103 *) Various precautionary measures:
105 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
107 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
108 (NB: This would require knowledge of the secret session ticket key
109 to exploit, in which case you'd be SOL either way.)
111 - Change bn_nist.c so that it will properly handle input BIGNUMs
112 outside the expected range.
114 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
117 [Neel Mehta, Bodo Moeller]
119 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
120 the load fails. Useful for distros.
121 [Ben Laurie and the FreeBSD team]
123 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
126 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
129 *) Expand ENGINE to support engine supplied SSL client certificate functions.
131 This work was sponsored by Logica.
134 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
135 keystores. Support for SSL/TLS client authentication too.
136 Not compiled unless enable-capieng specified to Configure.
138 This work was sponsored by Logica.
141 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
142 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
143 attribute creation routines such as certifcate requests and PKCS#12
147 Changes between 0.9.8g and 0.9.8h [28 May 2008]
149 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
150 handshake which could lead to a cilent crash as found using the
151 Codenomicon TLS test suite (CVE-2008-1672)
152 [Steve Henson, Mark Cox]
154 *) Fix double free in TLS server name extensions which could lead to
155 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
158 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
160 Clear the error queue to ensure that error entries left from
161 older function calls do not interfere with the correct operation.
162 [Lutz Jaenicke, Erik de Castro Lopo]
164 *) Remove root CA certificates of commercial CAs:
166 The OpenSSL project does not recommend any specific CA and does not
167 have any policy with respect to including or excluding any CA.
168 Therefore it does not make any sense to ship an arbitrary selection
169 of root CA certificates with the OpenSSL software.
172 *) RSA OAEP patches to fix two separate invalid memory reads.
173 The first one involves inputs when 'lzero' is greater than
174 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
175 before the beginning of from). The second one involves inputs where
176 the 'db' section contains nothing but zeroes (there is a one-byte
177 invalid read after the end of 'db').
178 [Ivan Nestlerode <inestlerode@us.ibm.com>]
180 *) Partial backport from 0.9.9-dev:
182 Introduce bn_mul_mont (dedicated Montgomery multiplication
183 procedure) as a candidate for BIGNUM assembler implementation.
184 While 0.9.9-dev uses assembler for various architectures, only
185 x86_64 is available by default here in the 0.9.8 branch, and
186 32-bit x86 is available through a compile-time setting.
188 To try the 32-bit x86 assembler implementation, use Configure
189 option "enable-montasm" (which exists only for this backport).
191 As "enable-montasm" for 32-bit x86 disclaims code stability
192 anyway, in this constellation we activate additional code
193 backported from 0.9.9-dev for further performance improvements,
194 namely BN_from_montgomery_word. (To enable this otherwise,
195 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
197 [Andy Polyakov (backport partially by Bodo Moeller)]
199 *) Add TLS session ticket callback. This allows an application to set
200 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
201 values. This is useful for key rollover for example where several key
202 sets may exist with different names.
205 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
206 This was broken until now in 0.9.8 releases, such that the only way
207 a registered ENGINE could be used (assuming it initialises
208 successfully on the host) was to explicitly set it as the default
209 for the relevant algorithms. This is in contradiction with 0.9.7
210 behaviour and the documentation. With this fix, when an ENGINE is
211 registered into a given algorithm's table of implementations, the
212 'uptodate' flag is reset so that auto-discovery will be used next
213 time a new context for that algorithm attempts to select an
215 [Ian Lister (tweaked by Geoff Thorpe)]
217 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
218 implemention in the following ways:
220 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
223 Lack of BER streaming support means one pass streaming processing is
224 only supported if data is detached: setting the streaming flag is
225 ignored for embedded content.
227 CMS support is disabled by default and must be explicitly enabled
228 with the enable-cms configuration option.
231 *) Update the GMP engine glue to do direct copies between BIGNUM and
232 mpz_t when openssl and GMP use the same limb size. Otherwise the
233 existing "conversion via a text string export" trick is still used.
234 [Paul Sheer <paulsheer@gmail.com>]
236 *) Zlib compression BIO. This is a filter BIO which compressed and
237 uncompresses any data passed through it.
240 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
241 RFC3394 compatible AES key wrapping.
244 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
245 sets string data without copying. X509_ALGOR_set0() and
246 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
247 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
248 from an X509_ATTRIBUTE structure optionally checking it occurs only
249 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
253 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
254 to get the expected BN_FLG_CONSTTIME behavior.
255 [Bodo Moeller (Google)]
259 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
260 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
261 - added some more tests to do_tests.pl
262 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
263 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
264 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
265 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
266 - various changes to netware.pl to enable gcc-cross builds on Win32
268 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
269 - various changes to fix missing prototype warnings
270 - fixed x86nasm.pl to create correct asm files for NASM COFF output
271 - added AES, WHIRLPOOL and CPUID assembler code to build files
272 - added missing AES assembler make rules to mk1mf.pl
273 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
274 [Guenter Knauf <eflash@gmx.net>]
276 *) Implement certificate status request TLS extension defined in RFC3546.
277 A client can set the appropriate parameters and receive the encoded
278 OCSP response via a callback. A server can query the supplied parameters
279 and set the encoded OCSP response in the callback. Add simplified examples
280 to s_client and s_server.
283 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
286 + Binary incompatibility of ssl_ctx_st structure
287 + DTLS interoperation with non-compliant servers
288 + Don't call get_session_cb() without proposed session
289 + Fix ia64 assembler code
290 [Andy Polyakov, Steve Henson]
292 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
294 *) DTLS Handshake overhaul. There were longstanding issues with
295 OpenSSL DTLS implementation, which were making it impossible for
296 RFC 4347 compliant client to communicate with OpenSSL server.
297 Unfortunately just fixing these incompatibilities would "cut off"
298 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
299 server keeps tolerating non RFC compliant syntax. The opposite is
300 not true, 0.9.8f client can not communicate with earlier server.
301 This update even addresses CVE-2007-4995.
304 *) Changes to avoid need for function casts in OpenSSL: some compilers
305 (gcc 4.2 and later) reject their use.
306 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
309 *) Add RFC4507 support to OpenSSL. This includes the corrections in
310 RFC4507bis. The encrypted ticket format is an encrypted encoded
311 SSL_SESSION structure, that way new session features are automatically
314 If a client application caches session in an SSL_SESSION structure
315 support is transparent because tickets are now stored in the encoded
318 The SSL_CTX structure automatically generates keys for ticket
319 protection in servers so again support should be possible
320 with no application modification.
322 If a client or server wishes to disable RFC4507 support then the option
323 SSL_OP_NO_TICKET can be set.
325 Add a TLS extension debugging callback to allow the contents of any client
326 or server extensions to be examined.
328 This work was sponsored by Google.
331 *) Add initial support for TLS extensions, specifically for the server_name
332 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
333 have new members for a host name. The SSL data structure has an
334 additional member SSL_CTX *initial_ctx so that new sessions can be
335 stored in that context to allow for session resumption, even after the
336 SSL has been switched to a new SSL_CTX in reaction to a client's
337 server_name extension.
339 New functions (subject to change):
342 SSL_get_servername_type()
345 New CTRL codes and macros (subject to change):
347 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
348 - SSL_CTX_set_tlsext_servername_callback()
349 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
350 - SSL_CTX_set_tlsext_servername_arg()
351 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
353 openssl s_client has a new '-servername ...' option.
355 openssl s_server has new options '-servername_host ...', '-cert2 ...',
356 '-key2 ...', '-servername_fatal' (subject to change). This allows
357 testing the HostName extension for a specific single host name ('-cert'
358 and '-key' remain fallbacks for handshakes without HostName
359 negotiation). If the unrecogninzed_name alert has to be sent, this by
360 default is a warning; it becomes fatal with the '-servername_fatal'
363 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
365 *) Add AES and SSE2 assembly language support to VC++ build.
368 *) Mitigate attack on final subtraction in Montgomery reduction.
371 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
372 (which previously caused an internal error).
375 *) Squeeze another 10% out of IGE mode when in != out.
378 *) AES IGE mode speedup.
379 [Dean Gaudet (Google)]
381 *) Add the Korean symmetric 128-bit cipher SEED (see
382 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
383 add SEED ciphersuites from RFC 4162:
385 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
386 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
387 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
388 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
390 To minimize changes between patchlevels in the OpenSSL 0.9.8
391 series, SEED remains excluded from compilation unless OpenSSL
392 is configured with 'enable-seed'.
395 *) Mitigate branch prediction attacks, which can be practical if a
396 single processor is shared, allowing a spy process to extract
397 information. For detailed background information, see
398 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
399 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
400 and Necessary Software Countermeasures"). The core of the change
401 are new versions BN_div_no_branch() and
402 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
403 respectively, which are slower, but avoid the security-relevant
404 conditional branches. These are automatically called by BN_div()
405 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
406 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
407 remove a conditional branch.
409 BN_FLG_CONSTTIME is the new name for the previous
410 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
411 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
412 in the exponent causes BN_mod_exp_mont() to use the alternative
413 implementation in BN_mod_exp_mont_consttime().) The old name
414 remains as a deprecated alias.
416 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
417 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
418 constant-time implementations for more than just exponentiation.
419 Here too the old name is kept as a deprecated alias.
421 BN_BLINDING_new() will now use BN_dup() for the modulus so that
422 the BN_BLINDING structure gets an independent copy of the
423 modulus. This means that the previous "BIGNUM *m" argument to
424 BN_BLINDING_new() and to BN_BLINDING_create_param() now
425 essentially becomes "const BIGNUM *m", although we can't actually
426 change this in the header file before 0.9.9. It allows
427 RSA_setup_blinding() to use BN_with_flags() on the modulus to
428 enable BN_FLG_CONSTTIME.
430 [Matthew D Wood (Intel Corp)]
432 *) In the SSL/TLS server implementation, be strict about session ID
433 context matching (which matters if an application uses a single
434 external cache for different purposes). Previously,
435 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
436 set. This did ensure strict client verification, but meant that,
437 with applications using a single external cache for quite
438 different requirements, clients could circumvent ciphersuite
439 restrictions for a given session ID context by starting a session
440 in a different context.
443 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
444 a ciphersuite string such as "DEFAULT:RSA" cannot enable
445 authentication-only ciphersuites.
448 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
449 not complete and could lead to a possible single byte overflow
450 (CVE-2007-5135) [Ben Laurie]
452 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
454 *) Since AES128 and AES256 (and similarly Camellia128 and
455 Camellia256) share a single mask bit in the logic of
456 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
457 kludge to work properly if AES128 is available and AES256 isn't
458 (or if Camellia128 is available and Camellia256 isn't).
461 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
462 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
463 When a point or a seed is encoded in a BIT STRING, we need to
464 prevent the removal of trailing zero bits to get the proper DER
465 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
466 of a NamedBitList, for which trailing 0 bits need to be removed.)
469 *) Have SSL/TLS server implementation tolerate "mismatched" record
470 protocol version while receiving ClientHello even if the
471 ClientHello is fragmented. (The server can't insist on the
472 particular protocol version it has chosen before the ServerHello
473 message has informed the client about his choice.)
476 *) Add RFC 3779 support.
477 [Rob Austein for ARIN, Ben Laurie]
479 *) Load error codes if they are not already present instead of using a
480 static variable. This allows them to be cleanly unloaded and reloaded.
481 Improve header file function name parsing.
484 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
485 or CAPABILITY handshake as required by RFCs.
488 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
490 *) Introduce limits to prevent malicious keys being able to
491 cause a denial of service. (CVE-2006-2940)
492 [Steve Henson, Bodo Moeller]
494 *) Fix ASN.1 parsing of certain invalid structures that can result
495 in a denial of service. (CVE-2006-2937) [Steve Henson]
497 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
498 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
500 *) Fix SSL client code which could crash if connecting to a
501 malicious SSLv2 server. (CVE-2006-4343)
502 [Tavis Ormandy and Will Drewry, Google Security Team]
504 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
505 match only those. Before that, "AES256-SHA" would be interpreted
506 as a pattern and match "AES128-SHA" too (since AES128-SHA got
507 the same strength classification in 0.9.7h) as we currently only
508 have a single AES bit in the ciphersuite description bitmap.
509 That change, however, also applied to ciphersuite strings such as
510 "RC4-MD5" that intentionally matched multiple ciphersuites --
511 namely, SSL 2.0 ciphersuites in addition to the more common ones
512 from SSL 3.0/TLS 1.0.
514 So we change the selection algorithm again: Naming an explicit
515 ciphersuite selects this one ciphersuite, and any other similar
516 ciphersuite (same bitmap) from *other* protocol versions.
517 Thus, "RC4-MD5" again will properly select both the SSL 2.0
518 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
520 Since SSL 2.0 does not have any ciphersuites for which the
521 128/256 bit distinction would be relevant, this works for now.
522 The proper fix will be to use different bits for AES128 and
523 AES256, which would have avoided the problems from the beginning;
524 however, bits are scarce, so we can only do this in a new release
525 (not just a patchlevel) when we can change the SSL_CIPHER
526 definition to split the single 'unsigned long mask' bitmap into
527 multiple values to extend the available space.
531 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
533 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
534 (CVE-2006-4339) [Ben Laurie and Google Security Team]
536 *) Add AES IGE and biIGE modes.
539 *) Change the Unix randomness entropy gathering to use poll() when
540 possible instead of select(), since the latter has some
541 undesirable limitations.
542 [Darryl Miles via Richard Levitte and Bodo Moeller]
544 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
545 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
546 cannot be implicitly activated as part of, e.g., the "AES" alias.
547 However, please upgrade to OpenSSL 0.9.9[-dev] for
548 non-experimental use of the ECC ciphersuites to get TLS extension
549 support, which is required for curve and point format negotiation
550 to avoid potential handshake problems.
553 *) Disable rogue ciphersuites:
555 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
556 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
557 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
559 The latter two were purportedly from
560 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
563 Also deactivate the remaining ciphersuites from
564 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
565 unofficial, and the ID has long expired.
568 *) Fix RSA blinding Heisenbug (problems sometimes occured on
569 dual-core machines) and other potential thread-safety issues.
572 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
573 versions), which is now available for royalty-free use
574 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
575 Also, add Camellia TLS ciphersuites from RFC 4132.
577 To minimize changes between patchlevels in the OpenSSL 0.9.8
578 series, Camellia remains excluded from compilation unless OpenSSL
579 is configured with 'enable-camellia'.
582 *) Disable the padding bug check when compression is in use. The padding
583 bug check assumes the first packet is of even length, this is not
584 necessarily true if compresssion is enabled and can result in false
585 positives causing handshake failure. The actual bug test is ancient
586 code so it is hoped that implementations will either have fixed it by
587 now or any which still have the bug do not support compression.
590 Changes between 0.9.8a and 0.9.8b [04 May 2006]
592 *) When applying a cipher rule check to see if string match is an explicit
593 cipher suite and only match that one cipher suite if it is.
596 *) Link in manifests for VC++ if needed.
597 [Austin Ziegler <halostatue@gmail.com>]
599 *) Update support for ECC-based TLS ciphersuites according to
600 draft-ietf-tls-ecc-12.txt with proposed changes (but without
601 TLS extensions, which are supported starting with the 0.9.9
602 branch, not in the OpenSSL 0.9.8 branch).
605 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
606 opaque EVP_CIPHER_CTX handling.
609 *) Fixes and enhancements to zlib compression code. We now only use
610 "zlib1.dll" and use the default __cdecl calling convention on Win32
611 to conform with the standards mentioned here:
612 http://www.zlib.net/DLL_FAQ.txt
613 Static zlib linking now works on Windows and the new --with-zlib-include
614 --with-zlib-lib options to Configure can be used to supply the location
615 of the headers and library. Gracefully handle case where zlib library
619 *) Several fixes and enhancements to the OID generation code. The old code
620 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
621 handle numbers larger than ULONG_MAX, truncated printing and had a
622 non standard OBJ_obj2txt() behaviour.
625 *) Add support for building of engines under engine/ as shared libraries
626 under VC++ build system.
629 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
630 Hopefully, we will not see any false combination of paths any more.
633 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
635 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
636 (part of SSL_OP_ALL). This option used to disable the
637 countermeasure against man-in-the-middle protocol-version
638 rollback in the SSL 2.0 server implementation, which is a bad
639 idea. (CVE-2005-2969)
641 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
642 for Information Security, National Institute of Advanced Industrial
643 Science and Technology [AIST], Japan)]
645 *) Add two function to clear and return the verify parameter flags.
648 *) Keep cipherlists sorted in the source instead of sorting them at
649 runtime, thus removing the need for a lock.
652 *) Avoid some small subgroup attacks in Diffie-Hellman.
653 [Nick Mathewson and Ben Laurie]
655 *) Add functions for well-known primes.
658 *) Extended Windows CE support.
659 [Satoshi Nakamura and Andy Polyakov]
661 *) Initialize SSL_METHOD structures at compile time instead of during
662 runtime, thus removing the need for a lock.
665 *) Make PKCS7_decrypt() work even if no certificate is supplied by
666 attempting to decrypt each encrypted key in turn. Add support to
670 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
672 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
675 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
678 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
679 key into the same file any more.
682 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
685 *) Add -utf8 command line and config file option to 'ca'.
686 [Stefan <stf@udoma.org]
688 *) Removed the macro des_crypt(), as it seems to conflict with some
689 libraries. Use DES_crypt().
692 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
693 involves renaming the source and generated shared-libs for
694 both. The engines will accept the corrected or legacy ids
695 ('ncipher' and '4758_cca' respectively) when binding. NB,
696 this only applies when building 'shared'.
697 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
699 *) Add attribute functions to EVP_PKEY structure. Modify
700 PKCS12_create() to recognize a CSP name attribute and
701 use it. Make -CSP option work again in pkcs12 utility.
704 *) Add new functionality to the bn blinding code:
705 - automatic re-creation of the BN_BLINDING parameters after
706 a fixed number of uses (currently 32)
707 - add new function for parameter creation
708 - introduce flags to control the update behaviour of the
709 BN_BLINDING parameters
710 - hide BN_BLINDING structure
711 Add a second BN_BLINDING slot to the RSA structure to improve
712 performance when a single RSA object is shared among several
716 *) Add support for DTLS.
717 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
719 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
720 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
723 *) Remove buggy and incompletet DH cert support from
724 ssl/ssl_rsa.c and ssl/s3_both.c
727 *) Use SHA-1 instead of MD5 as the default digest algorithm for
728 the apps/openssl applications.
731 *) Compile clean with "-Wall -Wmissing-prototypes
732 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
733 DEBUG_SAFESTACK must also be set.
736 *) Change ./Configure so that certain algorithms can be disabled by default.
737 The new counterpiece to "no-xxx" is "enable-xxx".
739 The patented RC5 and MDC2 algorithms will now be disabled unless
740 "enable-rc5" and "enable-mdc2", respectively, are specified.
742 (IDEA remains enabled despite being patented. This is because IDEA
743 is frequently required for interoperability, and there is no license
744 fee for non-commercial use. As before, "no-idea" can be used to
745 avoid this algorithm.)
749 *) Add processing of proxy certificates (see RFC 3820). This work was
750 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
751 EGEE (Enabling Grids for E-science in Europe).
754 *) RC4 performance overhaul on modern architectures/implementations, such
755 as Intel P4, IA-64 and AMD64.
758 *) New utility extract-section.pl. This can be used specify an alternative
759 section number in a pod file instead of having to treat each file as
760 a separate case in Makefile. This can be done by adding two lines to the
763 =for comment openssl_section:XXX
765 The blank line is mandatory.
769 *) New arguments -certform, -keyform and -pass for s_client and s_server
770 to allow alternative format key and certificate files and passphrase
774 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
775 update associated structures and add various utility functions.
777 Add new policy related verify parameters, include policy checking in
778 standard verify code. Enhance 'smime' application with extra parameters
779 to support policy checking and print out.
782 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
783 Nehemiah processors. These extensions support AES encryption in hardware
784 as well as RNG (though RNG support is currently disabled).
785 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
787 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
790 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
791 [Andy Polyakov and a number of other people]
793 *) Improved PowerPC platform support. Most notably BIGNUM assembler
794 implementation contributed by IBM.
795 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
797 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
798 exponent rather than 'unsigned long'. There is a corresponding change to
799 the new 'rsa_keygen' element of the RSA_METHOD structure.
800 [Jelte Jansen, Geoff Thorpe]
802 *) Functionality for creating the initial serial number file is now
803 moved from CA.pl to the 'ca' utility with a new option -create_serial.
805 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
806 number file to 1, which is bound to cause problems. To avoid
807 the problems while respecting compatibility between different 0.9.7
808 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
809 CA.pl for serial number initialization. With the new release 0.9.8,
810 we can fix the problem directly in the 'ca' utility.)
813 *) Reduced header interdepencies by declaring more opaque objects in
814 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
815 give fewer recursive includes, which could break lazy source code - so
816 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
817 developers should define this symbol when building and using openssl to
818 ensure they track the recommended behaviour, interfaces, [etc], but
819 backwards-compatible behaviour prevails when this isn't defined.
822 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
825 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
826 This will generate a random key of the appropriate length based on the
827 cipher context. The EVP_CIPHER can provide its own random key generation
828 routine to support keys of a specific form. This is used in the des and
829 3des routines to generate a key of the correct parity. Update S/MIME
830 code to use new functions and hence generate correct parity DES keys.
831 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
832 valid (weak or incorrect parity).
835 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
836 as looking them up. This is useful when the verified structure may contain
837 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
838 present unless the new PKCS7_NO_CRL flag is asserted.
841 *) Extend ASN1 oid configuration module. It now additionally accepts the
844 shortName = some long name, 1.2.3.4
847 *) Reimplemented the BN_CTX implementation. There is now no more static
848 limitation on the number of variables it can handle nor the depth of the
849 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
850 information can now expand as required, and rather than having a single
851 static array of bignums, BN_CTX now uses a linked-list of such arrays
852 allowing it to expand on demand whilst maintaining the usefulness of
856 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
857 to allow all RSA operations to function using a single BN_CTX.
860 *) Preliminary support for certificate policy evaluation and checking. This
861 is initially intended to pass the tests outlined in "Conformance Testing
862 of Relying Party Client Certificate Path Processing Logic" v1.07.
865 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
866 remained unused and not that useful. A variety of other little bignum
867 tweaks and fixes have also been made continuing on from the audit (see
871 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
872 associated ASN1, EVP and SSL functions and old ASN1 macros.
875 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
876 and this should never fail. So the return value from the use of
877 BN_set_word() (which can fail due to needless expansion) is now deprecated;
878 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
881 *) BN_CTX_get() should return zero-valued bignums, providing the same
882 initialised value as BN_new().
883 [Geoff Thorpe, suggested by Ulf Möller]
885 *) Support for inhibitAnyPolicy certificate extension.
888 *) An audit of the BIGNUM code is underway, for which debugging code is
889 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
890 is considered valid when processing BIGNUMs, and causes execution to
891 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
892 further steps are taken to deliberately pollute unused data in BIGNUM
893 structures to try and expose faulty code further on. For now, openssl will
894 (in its default mode of operation) continue to tolerate the inconsistent
895 forms that it has tolerated in the past, but authors and packagers should
896 consider trying openssl and their own applications when compiled with
897 these debugging symbols defined. It will help highlight potential bugs in
898 their own code, and will improve the test coverage for OpenSSL itself. At
899 some point, these tighter rules will become openssl's default to improve
900 maintainability, though the assert()s and other overheads will remain only
901 in debugging configurations. See bn.h for more details.
902 [Geoff Thorpe, Nils Larsch, Ulf Möller]
904 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
905 that can only be obtained through BN_CTX_new() (which implicitly
906 initialises it). The presence of this function only made it possible
907 to overwrite an existing structure (and cause memory leaks).
910 *) Because of the callback-based approach for implementing LHASH as a
911 template type, lh_insert() adds opaque objects to hash-tables and
912 lh_doall() or lh_doall_arg() are typically used with a destructor callback
913 to clean up those corresponding objects before destroying the hash table
914 (and losing the object pointers). So some over-zealous constifications in
915 LHASH have been relaxed so that lh_insert() does not take (nor store) the
916 objects as "const" and the lh_doall[_arg] callback wrappers are not
917 prototyped to have "const" restrictions on the object pointers they are
918 given (and so aren't required to cast them away any more).
921 *) The tmdiff.h API was so ugly and minimal that our own timing utility
922 (speed) prefers to use its own implementation. The two implementations
923 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
924 its object type properly exposed (MS_TM) instead of casting to/from "char
925 *". This may still change yet if someone realises MS_TM and "ms_time_***"
926 aren't necessarily the greatest nomenclatures - but this is what was used
927 internally to the implementation so I've used that for now.
930 *) Ensure that deprecated functions do not get compiled when
931 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
932 the self-tests were still using deprecated key-generation functions so
933 these have been updated also.
936 *) Reorganise PKCS#7 code to separate the digest location functionality
937 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
938 New function PKCS7_set_digest() to set the digest type for PKCS#7
939 digestedData type. Add additional code to correctly generate the
940 digestedData type and add support for this type in PKCS7 initialization
944 *) New function PKCS7_set0_type_other() this initializes a PKCS7
945 structure of type "other".
948 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
949 sure the loop does correctly stop and breaking ("division by zero")
950 modulus operations are not performed. The (pre-generated) prime
951 table crypto/bn/bn_prime.h was already correct, but it could not be
952 re-generated on some platforms because of the "division by zero"
953 situation in the script.
954 [Ralf S. Engelschall]
956 *) Update support for ECC-based TLS ciphersuites according to
957 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
958 SHA-1 now is only used for "small" curves (where the
959 representation of a field element takes up to 24 bytes); for
960 larger curves, the field element resulting from ECDH is directly
961 used as premaster secret.
962 [Douglas Stebila (Sun Microsystems Laboratories)]
964 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
965 curve secp160r1 to the tests.
966 [Douglas Stebila (Sun Microsystems Laboratories)]
968 *) Add the possibility to load symbols globally with DSO.
969 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
971 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
972 control of the error stack.
975 *) Add support for STORE in ENGINE.
978 *) Add the STORE type. The intention is to provide a common interface
979 to certificate and key stores, be they simple file-based stores, or
980 HSM-type store, or LDAP stores, or...
981 NOTE: The code is currently UNTESTED and isn't really used anywhere.
984 *) Add a generic structure called OPENSSL_ITEM. This can be used to
985 pass a list of arguments to any function as well as provide a way
986 for a function to pass data back to the caller.
989 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
990 works like BUF_strdup() but can be used to duplicate a portion of
991 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
995 *) Add the function sk_find_ex() which works like sk_find(), but will
996 return an index to an element even if an exact match couldn't be
997 found. The index is guaranteed to point at the element where the
998 searched-for key would be inserted to preserve sorting order.
1001 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1002 takes an extra flags argument for optional functionality. Currently,
1003 the following flags are defined:
1005 OBJ_BSEARCH_VALUE_ON_NOMATCH
1006 This one gets OBJ_bsearch_ex() to return a pointer to the first
1007 element where the comparing function returns a negative or zero
1010 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1011 This one gets OBJ_bsearch_ex() to return a pointer to the first
1012 element where the comparing function returns zero. This is useful
1013 if there are more than one element where the comparing function
1017 *) Make it possible to create self-signed certificates with 'openssl ca'
1018 in such a way that the self-signed certificate becomes part of the
1019 CA database and uses the same mechanisms for serial number generation
1020 as all other certificate signing. The new flag '-selfsign' enables
1021 this functionality. Adapt CA.sh and CA.pl.in.
1024 *) Add functionality to check the public key of a certificate request
1025 against a given private. This is useful to check that a certificate
1026 request can be signed by that key (self-signing).
1029 *) Make it possible to have multiple active certificates with the same
1030 subject in the CA index file. This is done only if the keyword
1031 'unique_subject' is set to 'no' in the main CA section (default
1032 if 'CA_default') of the configuration file. The value is saved
1033 with the database itself in a separate index attribute file,
1034 named like the index file with '.attr' appended to the name.
1037 *) Generate muti valued AVAs using '+' notation in config files for
1041 *) Support for nameConstraints certificate extension.
1044 *) Support for policyConstraints certificate extension.
1047 *) Support for policyMappings certificate extension.
1050 *) Make sure the default DSA_METHOD implementation only uses its
1051 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1052 and change its own handlers to be NULL so as to remove unnecessary
1053 indirection. This lets alternative implementations fallback to the
1054 default implementation more easily.
1057 *) Support for directoryName in GeneralName related extensions
1061 *) Make it possible to link applications using Makefile.shared.
1062 Make that possible even when linking against static libraries!
1065 *) Support for single pass processing for S/MIME signing. This now
1066 means that S/MIME signing can be done from a pipe, in addition
1067 cleartext signing (multipart/signed type) is effectively streaming
1068 and the signed data does not need to be all held in memory.
1070 This is done with a new flag PKCS7_STREAM. When this flag is set
1071 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1072 is done after the data is output (and digests calculated) in
1073 SMIME_write_PKCS7().
1076 *) Add full support for -rpath/-R, both in shared libraries and
1077 applications, at least on the platforms where it's known how
1081 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1082 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1083 will now compute a table of multiples of the generator that
1084 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1085 faster (notably in the case of a single point multiplication,
1086 scalar * generator).
1087 [Nils Larsch, Bodo Moeller]
1089 *) IPv6 support for certificate extensions. The various extensions
1090 which use the IP:a.b.c.d can now take IPv6 addresses using the
1091 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1095 *) Added an ENGINE that implements RSA by performing private key
1096 exponentiations with the GMP library. The conversions to and from
1097 GMP's mpz_t format aren't optimised nor are any montgomery forms
1098 cached, and on x86 it appears OpenSSL's own performance has caught up.
1099 However there are likely to be other architectures where GMP could
1100 provide a boost. This ENGINE is not built in by default, but it can be
1101 specified at Configure time and should be accompanied by the necessary
1102 linker additions, eg;
1103 ./config -DOPENSSL_USE_GMP -lgmp
1106 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1107 testing availability of engines with "-t" - the old behaviour is
1108 produced by increasing the feature's verbosity with "-tt".
1111 *) ECDSA routines: under certain error conditions uninitialized BN objects
1112 could be freed. Solution: make sure initialization is performed early
1113 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1117 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1118 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1119 software implementations. For DSA and DH, parameter generation can
1120 also be overriden by providing the appropriate method callbacks.
1123 *) Change the "progress" mechanism used in key-generation and
1124 primality testing to functions that take a new BN_GENCB pointer in
1125 place of callback/argument pairs. The new API functions have "_ex"
1126 postfixes and the older functions are reimplemented as wrappers for
1127 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1128 declarations of the old functions to help (graceful) attempts to
1129 migrate to the new functions. Also, the new key-generation API
1130 functions operate on a caller-supplied key-structure and return
1131 success/failure rather than returning a key or NULL - this is to
1132 help make "keygen" another member function of RSA_METHOD etc.
1134 Example for using the new callback interface:
1136 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1140 BN_GENCB_set(&my_cb, my_callback, my_arg);
1142 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1143 /* For the meaning of a, b in calls to my_callback(), see the
1144 * documentation of the function that calls the callback.
1145 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1146 * my_callback should return 1 if it wants BN_is_prime_ex()
1147 * to continue, or 0 to stop.
1152 *) Change the ZLIB compression method to be stateful, and make it
1153 available to TLS with the number defined in
1154 draft-ietf-tls-compression-04.txt.
1157 *) Add the ASN.1 structures and functions for CertificatePair, which
1158 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1160 CertificatePair ::= SEQUENCE {
1161 forward [0] Certificate OPTIONAL,
1162 reverse [1] Certificate OPTIONAL,
1163 -- at least one of the pair shall be present -- }
1165 Also implement the PEM functions to read and write certificate
1166 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1168 This needed to be defined, mostly for the sake of the LDAP
1169 attribute crossCertificatePair, but may prove useful elsewhere as
1173 *) Make it possible to inhibit symlinking of shared libraries in
1174 Makefile.shared, for Cygwin's sake.
1177 *) Extend the BIGNUM API by creating a function
1178 void BN_set_negative(BIGNUM *a, int neg);
1179 and a macro that behave like
1180 int BN_is_negative(const BIGNUM *a);
1182 to avoid the need to access 'a->neg' directly in applications.
1185 *) Implement fast modular reduction for pseudo-Mersenne primes
1186 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1187 EC_GROUP_new_curve_GFp() will now automatically use this
1189 [Nils Larsch <nla@trustcenter.de>]
1191 *) Add new lock type (CRYPTO_LOCK_BN).
1194 *) Change the ENGINE framework to automatically load engines
1195 dynamically from specific directories unless they could be
1196 found to already be built in or loaded. Move all the
1197 current engines except for the cryptodev one to a new
1199 The engines in engines/ are built as shared libraries if
1200 the "shared" options was given to ./Configure or ./config.
1201 Otherwise, they are inserted in libcrypto.a.
1202 /usr/local/ssl/engines is the default directory for dynamic
1203 engines, but that can be overriden at configure time through
1204 the usual use of --prefix and/or --openssldir, and at run
1205 time with the environment variable OPENSSL_ENGINES.
1206 [Geoff Thorpe and Richard Levitte]
1208 *) Add Makefile.shared, a helper makefile to build shared
1209 libraries. Addapt Makefile.org.
1212 *) Add version info to Win32 DLLs.
1213 [Peter 'Luna' Runestig" <peter@runestig.com>]
1215 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1216 can be added using this API to created arbitrary PKCS#12
1217 files while avoiding the low level API.
1219 New options to PKCS12_create(), key or cert can be NULL and
1220 will then be omitted from the output file. The encryption
1221 algorithm NIDs can be set to -1 for no encryption, the mac
1222 iteration count can be set to 0 to omit the mac.
1224 Enhance pkcs12 utility by making the -nokeys and -nocerts
1225 options work when creating a PKCS#12 file. New option -nomac
1226 to omit the mac, NONE can be set for an encryption algorithm.
1227 New code is modified to use the enhanced PKCS12_create()
1228 instead of the low level API.
1231 *) Extend ASN1 encoder to support indefinite length constructed
1232 encoding. This can output sequences tags and octet strings in
1233 this form. Modify pk7_asn1.c to support indefinite length
1234 encoding. This is experimental and needs additional code to
1235 be useful, such as an ASN1 bio and some enhanced streaming
1238 Extend template encode functionality so that tagging is passed
1239 down to the template encoder.
1242 *) Let 'openssl req' fail if an argument to '-newkey' is not
1243 recognized instead of using RSA as a default.
1246 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1247 As these are not official, they are not included in "ALL";
1248 the "ECCdraft" ciphersuite group alias can be used to select them.
1249 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1251 *) Add ECDH engine support.
1252 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1254 *) Add ECDH in new directory crypto/ecdh/.
1255 [Douglas Stebila (Sun Microsystems Laboratories)]
1257 *) Let BN_rand_range() abort with an error after 100 iterations
1258 without success (which indicates a broken PRNG).
1261 *) Change BN_mod_sqrt() so that it verifies that the input value
1262 is really the square of the return value. (Previously,
1263 BN_mod_sqrt would show GIGO behaviour.)
1266 *) Add named elliptic curves over binary fields from X9.62, SECG,
1267 and WAP/WTLS; add OIDs that were still missing.
1269 [Sheueling Chang Shantz and Douglas Stebila
1270 (Sun Microsystems Laboratories)]
1272 *) Extend the EC library for elliptic curves over binary fields
1273 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1276 EC_GF2m_simple_method
1280 EC_GROUP_new_curve_GF2m
1281 EC_GROUP_set_curve_GF2m
1282 EC_GROUP_get_curve_GF2m
1283 EC_POINT_set_affine_coordinates_GF2m
1284 EC_POINT_get_affine_coordinates_GF2m
1285 EC_POINT_set_compressed_coordinates_GF2m
1287 Point compression for binary fields is disabled by default for
1288 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1291 As binary polynomials are represented as BIGNUMs, various members
1292 of the EC_GROUP and EC_POINT data structures can be shared
1293 between the implementations for prime fields and binary fields;
1294 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1295 are essentially identical to their ..._GFp counterparts.
1296 (For simplicity, the '..._GFp' prefix has been dropped from
1297 various internal method names.)
1299 An internal 'field_div' method (similar to 'field_mul' and
1300 'field_sqr') has been added; this is used only for binary fields.
1302 [Sheueling Chang Shantz and Douglas Stebila
1303 (Sun Microsystems Laboratories)]
1305 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1306 through methods ('mul', 'precompute_mult').
1308 The generic implementations (now internally called 'ec_wNAF_mul'
1309 and 'ec_wNAF_precomputed_mult') remain the default if these
1310 methods are undefined.
1312 [Sheueling Chang Shantz and Douglas Stebila
1313 (Sun Microsystems Laboratories)]
1315 *) New function EC_GROUP_get_degree, which is defined through
1316 EC_METHOD. For curves over prime fields, this returns the bit
1317 length of the modulus.
1319 [Sheueling Chang Shantz and Douglas Stebila
1320 (Sun Microsystems Laboratories)]
1322 *) New functions EC_GROUP_dup, EC_POINT_dup.
1323 (These simply call ..._new and ..._copy).
1325 [Sheueling Chang Shantz and Douglas Stebila
1326 (Sun Microsystems Laboratories)]
1328 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1329 Polynomials are represented as BIGNUMs (where the sign bit is not
1330 used) in the following functions [macros]:
1333 BN_GF2m_sub [= BN_GF2m_add]
1334 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1335 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1336 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1338 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1339 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1340 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1341 BN_GF2m_cmp [= BN_ucmp]
1343 (Note that only the 'mod' functions are actually for fields GF(2^m).
1344 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1346 For some functions, an the irreducible polynomial defining a
1347 field can be given as an 'unsigned int[]' with strictly
1348 decreasing elements giving the indices of those bits that are set;
1349 i.e., p[] represents the polynomial
1350 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1352 p[0] > p[1] > ... > p[k] = 0.
1353 This applies to the following functions:
1358 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1359 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1361 BN_GF2m_mod_sqrt_arr
1362 BN_GF2m_mod_solve_quad_arr
1366 Conversion can be performed by the following functions:
1371 bntest.c has additional tests for binary polynomial arithmetic.
1373 Two implementations for BN_GF2m_mod_div() are available.
1374 The default algorithm simply uses BN_GF2m_mod_inv() and
1375 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1376 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1377 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1379 [Sheueling Chang Shantz and Douglas Stebila
1380 (Sun Microsystems Laboratories)]
1382 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1383 functionality is disabled at compile-time.
1384 [Douglas Stebila <douglas.stebila@sun.com>]
1386 *) Change default behaviour of 'openssl asn1parse' so that more
1387 information is visible when viewing, e.g., a certificate:
1389 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1390 mode the content of non-printable OCTET STRINGs is output in a
1391 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1392 avoid the appearance of a printable string.
1393 [Nils Larsch <nla@trustcenter.de>]
1395 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1397 EC_GROUP_set_asn1_flag()
1398 EC_GROUP_get_asn1_flag()
1399 EC_GROUP_set_point_conversion_form()
1400 EC_GROUP_get_point_conversion_form()
1401 These control ASN1 encoding details:
1402 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1403 has been set to OPENSSL_EC_NAMED_CURVE.
1404 - Points are encoded in uncompressed form by default; options for
1405 asn1_for are as for point2oct, namely
1406 POINT_CONVERSION_COMPRESSED
1407 POINT_CONVERSION_UNCOMPRESSED
1408 POINT_CONVERSION_HYBRID
1410 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1413 EC_GROUP_get0_seed()
1414 EC_GROUP_get_seed_len()
1415 This is used only for ASN1 purposes (so far).
1416 [Nils Larsch <nla@trustcenter.de>]
1418 *) Add 'field_type' member to EC_METHOD, which holds the NID
1419 of the appropriate field type OID. The new function
1420 EC_METHOD_get_field_type() returns this value.
1421 [Nils Larsch <nla@trustcenter.de>]
1426 EC_POINT_point2hex()
1427 EC_POINT_hex2point()
1428 providing useful interfaces to EC_POINT_point2oct() and
1429 EC_POINT_oct2point().
1430 [Nils Larsch <nla@trustcenter.de>]
1432 *) Change internals of the EC library so that the functions
1433 EC_GROUP_set_generator()
1434 EC_GROUP_get_generator()
1435 EC_GROUP_get_order()
1436 EC_GROUP_get_cofactor()
1437 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1438 to methods, which would lead to unnecessary code duplication when
1439 adding different types of curves.
1440 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1442 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1443 arithmetic, and such that modified wNAFs are generated
1444 (which avoid length expansion in many cases).
1447 *) Add a function EC_GROUP_check_discriminant() (defined via
1448 EC_METHOD) that verifies that the curve discriminant is non-zero.
1450 Add a function EC_GROUP_check() that makes some sanity tests
1451 on a EC_GROUP, its generator and order. This includes
1452 EC_GROUP_check_discriminant().
1453 [Nils Larsch <nla@trustcenter.de>]
1455 *) Add ECDSA in new directory crypto/ecdsa/.
1457 Add applications 'openssl ecparam' and 'openssl ecdsa'
1458 (these are based on 'openssl dsaparam' and 'openssl dsa').
1460 ECDSA support is also included in various other files across the
1461 library. Most notably,
1462 - 'openssl req' now has a '-newkey ecdsa:file' option;
1463 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1464 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1465 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1466 them suitable for ECDSA where domain parameters must be
1467 extracted before the specific public key;
1468 - ECDSA engine support has been added.
1469 [Nils Larsch <nla@trustcenter.de>]
1471 *) Include some named elliptic curves, and add OIDs from X9.62,
1472 SECG, and WAP/WTLS. Each curve can be obtained from the new
1474 EC_GROUP_new_by_curve_name(),
1475 and the list of available named curves can be obtained with
1476 EC_get_builtin_curves().
1477 Also add a 'curve_name' member to EC_GROUP objects, which can be
1479 EC_GROUP_set_curve_name()
1480 EC_GROUP_get_curve_name()
1481 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1483 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1484 was actually never needed) and in BN_mul(). The removal in BN_mul()
1485 required a small change in bn_mul_part_recursive() and the addition
1486 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1487 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1488 bn_sub_words() and bn_add_words() except they take arrays with
1492 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
1494 *) In the SSL/TLS server implementation, be strict about session ID
1495 context matching (which matters if an application uses a single
1496 external cache for different purposes). Previously,
1497 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1498 set. This did ensure strict client verification, but meant that,
1499 with applications using a single external cache for quite
1500 different requirements, clients could circumvent ciphersuite
1501 restrictions for a given session ID context by starting a session
1502 in a different context.
1505 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
1507 *) Cleanse PEM buffers before freeing them since they may contain
1509 [Benjamin Bennett <ben@psc.edu>]
1511 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1512 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1513 authentication-only ciphersuites.
1516 *) Since AES128 and AES256 share a single mask bit in the logic of
1517 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1518 kludge to work properly if AES128 is available and AES256 isn't.
1521 *) Expand security boundary to match 1.1.1 module.
1524 *) Remove redundant features: hash file source, editing of test vectors
1525 modify fipsld to use external fips_premain.c signature.
1528 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
1529 run algorithm test programs.
1532 *) Make algorithm test programs more tolerant of whitespace.
1535 *) Have SSL/TLS server implementation tolerate "mismatched" record
1536 protocol version while receiving ClientHello even if the
1537 ClientHello is fragmented. (The server can't insist on the
1538 particular protocol version it has chosen before the ServerHello
1539 message has informed the client about his choice.)
1542 *) Load error codes if they are not already present instead of using a
1543 static variable. This allows them to be cleanly unloaded and reloaded.
1546 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
1548 *) Introduce limits to prevent malicious keys being able to
1549 cause a denial of service. (CVE-2006-2940)
1550 [Steve Henson, Bodo Moeller]
1552 *) Fix ASN.1 parsing of certain invalid structures that can result
1553 in a denial of service. (CVE-2006-2937) [Steve Henson]
1555 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1556 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1558 *) Fix SSL client code which could crash if connecting to a
1559 malicious SSLv2 server. (CVE-2006-4343)
1560 [Tavis Ormandy and Will Drewry, Google Security Team]
1562 *) Change ciphersuite string processing so that an explicit
1563 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
1564 will no longer include "AES128-SHA"), and any other similar
1565 ciphersuite (same bitmap) from *other* protocol versions (so that
1566 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
1567 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
1568 changes from 0.9.8b and 0.9.8d.
1571 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
1573 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1574 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1576 *) Change the Unix randomness entropy gathering to use poll() when
1577 possible instead of select(), since the latter has some
1578 undesirable limitations.
1579 [Darryl Miles via Richard Levitte and Bodo Moeller]
1581 *) Disable rogue ciphersuites:
1583 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1584 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1585 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1587 The latter two were purportedly from
1588 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1591 Also deactive the remaining ciphersuites from
1592 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1593 unofficial, and the ID has long expired.
1596 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1597 dual-core machines) and other potential thread-safety issues.
1600 Changes between 0.9.7i and 0.9.7j [04 May 2006]
1602 *) Adapt fipsld and the build system to link against the validated FIPS
1603 module in FIPS mode.
1606 *) Fixes for VC++ 2005 build under Windows.
1609 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
1610 from a Windows bash shell such as MSYS. It is autodetected from the
1611 "config" script when run from a VC++ environment. Modify standard VC++
1612 build to use fipscanister.o from the GNU make build.
1615 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1617 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1618 The value now differs depending on if you build for FIPS or not.
1619 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1620 safely run with a non-FIPSed libcrypto, as it may crash because of
1621 the difference induced by this change.
1624 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1626 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1627 (part of SSL_OP_ALL). This option used to disable the
1628 countermeasure against man-in-the-middle protocol-version
1629 rollback in the SSL 2.0 server implementation, which is a bad
1630 idea. (CVE-2005-2969)
1632 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1633 for Information Security, National Institute of Advanced Industrial
1634 Science and Technology [AIST], Japan)]
1636 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1637 mainly for FIPS compliance and not fully integrated at this stage.
1640 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1641 the exponentiation using a fixed-length exponent. (Otherwise,
1642 the information leaked through timing could expose the secret key
1643 after many signatures; cf. Bleichenbacher's attack on DSA with
1647 *) Make a new fixed-window mod_exp implementation the default for
1648 RSA, DSA, and DH private-key operations so that the sequence of
1649 squares and multiplies and the memory access pattern are
1650 independent of the particular secret key. This will mitigate
1651 cache-timing and potential related attacks.
1653 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1654 and this is automatically used by BN_mod_exp_mont() if the new flag
1655 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1656 will use this BN flag for private exponents unless the flag
1657 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1658 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1660 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1662 *) Change the client implementation for SSLv23_method() and
1663 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1664 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1665 (Previously, the SSL 2.0 backwards compatible Client Hello
1666 message format would be used even with SSL_OP_NO_SSLv2.)
1669 *) Add support for smime-type MIME parameter in S/MIME messages which some
1673 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1674 a threadsafe manner. Modify rsa code to use new function and add calls
1675 to dsa and dh code (which had race conditions before).
1678 *) Include the fixed error library code in the C error file definitions
1679 instead of fixing them up at runtime. This keeps the error code
1680 structures constant.
1683 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1685 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1688 *) Fixes for newer kerberos headers. NB: the casts are needed because
1689 the 'length' field is signed on one version and unsigned on another
1690 with no (?) obvious way to tell the difference, without these VC++
1691 complains. Also the "definition" of FAR (blank) is no longer included
1692 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1693 some needed definitions.
1696 *) Undo Cygwin change.
1699 *) Added support for proxy certificates according to RFC 3820.
1700 Because they may be a security thread to unaware applications,
1701 they must be explicitely allowed in run-time. See
1702 docs/HOWTO/proxy_certificates.txt for further information.
1705 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1707 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1708 server and client random values. Previously
1709 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1710 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1712 This change has negligible security impact because:
1714 1. Server and client random values still have 24 bytes of pseudo random
1717 2. Server and client random values are sent in the clear in the initial
1720 3. The master secret is derived using the premaster secret (48 bytes in
1721 size for static RSA ciphersuites) as well as client server and random
1724 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1727 [Stephen Henson, reported by UK NISCC]
1729 *) Use Windows randomness collection on Cygwin.
1732 *) Fix hang in EGD/PRNGD query when communication socket is closed
1733 prematurely by EGD/PRNGD.
1734 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1736 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1739 *) Back-port of selected performance improvements from development
1740 branch, as well as improved support for PowerPC platforms.
1743 *) Add lots of checks for memory allocation failure, error codes to indicate
1744 failure and freeing up memory if a failure occurs.
1745 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1747 *) Add new -passin argument to dgst.
1750 *) Perform some character comparisons of different types in X509_NAME_cmp:
1751 this is needed for some certificates that reencode DNs into UTF8Strings
1752 (in violation of RFC3280) and can't or wont issue name rollover
1756 *) Make an explicit check during certificate validation to see that
1757 the CA setting in each certificate on the chain is correct. As a
1758 side effect always do the following basic checks on extensions,
1759 not just when there's an associated purpose to the check:
1761 - if there is an unhandled critical extension (unless the user
1762 has chosen to ignore this fault)
1763 - if the path length has been exceeded (if one is set at all)
1764 - that certain extensions fit the associated purpose (if one has
1768 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1770 *) Avoid a race condition when CRLs are checked in a multi threaded
1771 environment. This would happen due to the reordering of the revoked
1772 entries during signature checking and serial number lookup. Now the
1773 encoding is cached and the serial number sort performed under a lock.
1774 Add new STACK function sk_is_sorted().
1777 *) Add Delta CRL to the extension code.
1780 *) Various fixes to s3_pkt.c so alerts are sent properly.
1781 [David Holmes <d.holmes@f5.com>]
1783 *) Reduce the chances of duplicate issuer name and serial numbers (in
1784 violation of RFC3280) using the OpenSSL certificate creation utilities.
1785 This is done by creating a random 64 bit value for the initial serial
1786 number when a serial number file is created or when a self signed
1787 certificate is created using 'openssl req -x509'. The initial serial
1788 number file is created using 'openssl x509 -next_serial' in CA.pl
1789 rather than being initialized to 1.
1792 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1794 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1795 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1796 [Joe Orton, Steve Henson]
1798 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1800 [Joe Orton, Steve Henson]
1802 *) Make it possible to have multiple active certificates with the same
1803 subject in the CA index file. This is done only if the keyword
1804 'unique_subject' is set to 'no' in the main CA section (default
1805 if 'CA_default') of the configuration file. The value is saved
1806 with the database itself in a separate index attribute file,
1807 named like the index file with '.attr' appended to the name.
1810 *) X509 verify fixes. Disable broken certificate workarounds when
1811 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1812 keyUsage extension present. Don't accept CRLs with unhandled critical
1813 extensions: since verify currently doesn't process CRL extensions this
1814 rejects a CRL with *any* critical extensions. Add new verify error codes
1818 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1819 A clarification of RFC2560 will require the use of OCTET STRINGs and
1820 some implementations cannot handle the current raw format. Since OpenSSL
1821 copies and compares OCSP nonces as opaque blobs without any attempt at
1822 parsing them this should not create any compatibility issues.
1825 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1826 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1827 this HMAC (and other) operations are several times slower than OpenSSL
1831 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1832 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1834 *) Use the correct content when signing type "other".
1837 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1839 *) Fix various bugs revealed by running the NISCC test suite:
1841 Stop out of bounds reads in the ASN1 code when presented with
1842 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1844 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1846 If verify callback ignores invalid public key errors don't try to check
1847 certificate signature with the NULL public key.
1851 *) New -ignore_err option in ocsp application to stop the server
1852 exiting on the first error in a request.
1855 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1856 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1860 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1861 extra data after the compression methods not only for TLS 1.0
1862 but also for SSL 3.0 (as required by the specification).
1863 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1865 *) Change X509_certificate_type() to mark the key as exported/exportable
1866 when it's 512 *bits* long, not 512 bytes.
1869 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1870 blocks during encryption.
1873 *) Various fixes to base64 BIO and non blocking I/O. On write
1874 flushes were not handled properly if the BIO retried. On read
1875 data was not being buffered properly and had various logic bugs.
1876 This also affects blocking I/O when the data being decoded is a
1880 *) Various S/MIME bugfixes and compatibility changes:
1881 output correct application/pkcs7 MIME type if
1882 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1883 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1884 of files as .eml work). Correctly handle very long lines in MIME
1888 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1890 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1891 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1892 a protocol version number mismatch like a decryption error
1893 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1896 *) Turn on RSA blinding by default in the default implementation
1897 to avoid a timing attack. Applications that don't want it can call
1898 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1899 They would be ill-advised to do so in most cases.
1900 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1902 *) Change RSA blinding code so that it works when the PRNG is not
1903 seeded (in this case, the secret RSA exponent is abused as
1904 an unpredictable seed -- if it is not unpredictable, there
1905 is no point in blinding anyway). Make RSA blinding thread-safe
1906 by remembering the creator's thread ID in rsa->blinding and
1907 having all other threads use local one-time blinding factors
1908 (this requires more computation than sharing rsa->blinding, but
1909 avoids excessive locking; and if an RSA object is not shared
1910 between threads, blinding will still be very fast).
1913 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1914 ENGINE as defaults for all supported algorithms irrespective of
1915 the 'flags' parameter. 'flags' is now honoured, so applications
1916 should make sure they are passing it correctly.
1919 *) Target "mingw" now allows native Windows code to be generated in
1920 the Cygwin environment as well as with the MinGW compiler.
1923 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1925 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1926 via timing by performing a MAC computation even if incorrrect
1927 block cipher padding has been found. This is a countermeasure
1928 against active attacks where the attacker has to distinguish
1929 between bad padding and a MAC verification error. (CVE-2003-0078)
1931 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1932 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1933 Martin Vuagnoux (EPFL, Ilion)]
1935 *) Make the no-err option work as intended. The intention with no-err
1936 is not to have the whole error stack handling routines removed from
1937 libcrypto, it's only intended to remove all the function name and
1938 reason texts, thereby removing some of the footprint that may not
1939 be interesting if those errors aren't displayed anyway.
1941 NOTE: it's still possible for any application or module to have it's
1942 own set of error texts inserted. The routines are there, just not
1943 used by default when no-err is given.
1946 *) Add support for FreeBSD on IA64.
1947 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1949 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1950 Kerberos function mit_des_cbc_cksum(). Before this change,
1951 the value returned by DES_cbc_cksum() was like the one from
1952 mit_des_cbc_cksum(), except the bytes were swapped.
1953 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1955 *) Allow an application to disable the automatic SSL chain building.
1956 Before this a rather primitive chain build was always performed in
1957 ssl3_output_cert_chain(): an application had no way to send the
1958 correct chain if the automatic operation produced an incorrect result.
1960 Now the chain builder is disabled if either:
1962 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1964 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1966 The reasoning behind this is that an application would not want the
1967 auto chain building to take place if extra chain certificates are
1968 present and it might also want a means of sending no additional
1969 certificates (for example the chain has two certificates and the
1973 *) Add the possibility to build without the ENGINE framework.
1974 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1976 *) Under Win32 gmtime() can return NULL: check return value in
1977 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1980 *) DSA routines: under certain error conditions uninitialized BN objects
1981 could be freed. Solution: make sure initialization is performed early
1982 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1983 Nils Larsch <nla@trustcenter.de> via PR#459)
1986 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1987 checked on reconnect on the client side, therefore session resumption
1988 could still fail with a "ssl session id is different" error. This
1989 behaviour is masked when SSL_OP_ALL is used due to
1990 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1991 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1992 followup to PR #377.
1995 *) IA-32 assembler support enhancements: unified ELF targets, support
1996 for SCO/Caldera platforms, fix for Cygwin shared build.
1999 *) Add support for FreeBSD on sparc64. As a consequence, support for
2000 FreeBSD on non-x86 processors is separate from x86 processors on
2001 the config script, much like the NetBSD support.
2002 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2004 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2006 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2009 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2010 code (06) was taken as the first octet of the session ID and the last
2011 octet was ignored consequently. As a result SSLv2 client side session
2012 caching could not have worked due to the session ID mismatch between
2014 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2018 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2019 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2023 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2024 seems that in spite of existing for more than a year, many application
2025 author have done nothing to provide the necessary callbacks, which
2026 means that this particular engine will not work properly anywhere.
2027 This is a very unfortunate situation which forces us, in the name
2028 of usability, to give the hw_ncipher.c a static lock, which is part
2030 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2031 appear in 0.9.8 or later. We EXPECT application authors to have
2032 dealt properly with this when 0.9.8 is released (unless we actually
2033 make such changes in the libcrypto locking code that changes will
2034 have to be made anyway).
2037 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2038 octets have been read, EOF or an error occurs. Without this change
2039 some truncated ASN1 structures will not produce an error.
2042 *) Disable Heimdal support, since it hasn't been fully implemented.
2043 Still give the possibility to force the use of Heimdal, but with
2044 warnings and a request that patches get sent to openssl-dev.
2047 *) Add the VC-CE target, introduce the WINCE sysname, and add
2048 INSTALL.WCE and appropriate conditionals to make it build.
2049 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2051 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2052 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2053 edit numbers of the version.
2054 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2056 *) Introduce safe string copy and catenation functions
2057 (BUF_strlcpy() and BUF_strlcat()).
2058 [Ben Laurie (CHATS) and Richard Levitte]
2060 *) Avoid using fixed-size buffers for one-line DNs.
2061 [Ben Laurie (CHATS)]
2063 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2064 resizing buffers containing secrets, and use where appropriate.
2065 [Ben Laurie (CHATS)]
2067 *) Avoid using fixed size buffers for configuration file location.
2068 [Ben Laurie (CHATS)]
2070 *) Avoid filename truncation for various CA files.
2071 [Ben Laurie (CHATS)]
2073 *) Use sizeof in preference to magic numbers.
2074 [Ben Laurie (CHATS)]
2076 *) Avoid filename truncation in cert requests.
2077 [Ben Laurie (CHATS)]
2079 *) Add assertions to check for (supposedly impossible) buffer
2081 [Ben Laurie (CHATS)]
2083 *) Don't cache truncated DNS entries in the local cache (this could
2084 potentially lead to a spoofing attack).
2085 [Ben Laurie (CHATS)]
2087 *) Fix various buffers to be large enough for hex/decimal
2088 representations in a platform independent manner.
2089 [Ben Laurie (CHATS)]
2091 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2092 resizing buffers containing secrets, and use where appropriate.
2093 [Ben Laurie (CHATS)]
2095 *) Add BIO_indent() to avoid much slightly worrying code to do
2097 [Ben Laurie (CHATS)]
2099 *) Convert sprintf()/BIO_puts() to BIO_printf().
2100 [Ben Laurie (CHATS)]
2102 *) buffer_gets() could terminate with the buffer only half
2104 [Ben Laurie (CHATS)]
2106 *) Add assertions to prevent user-supplied crypto functions from
2107 overflowing internal buffers by having large block sizes, etc.
2108 [Ben Laurie (CHATS)]
2110 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2112 [Ben Laurie (CHATS)]
2114 *) Eliminate unused copy of key in RC4.
2115 [Ben Laurie (CHATS)]
2117 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2118 [Ben Laurie (CHATS)]
2120 *) Fix off-by-one error in EGD path.
2121 [Ben Laurie (CHATS)]
2123 *) If RANDFILE path is too long, ignore instead of truncating.
2124 [Ben Laurie (CHATS)]
2126 *) Eliminate unused and incorrectly sized X.509 structure
2128 [Ben Laurie (CHATS)]
2130 *) Eliminate unused and dangerous function knumber().
2131 [Ben Laurie (CHATS)]
2133 *) Eliminate unused and dangerous structure, KSSL_ERR.
2134 [Ben Laurie (CHATS)]
2136 *) Protect against overlong session ID context length in an encoded
2137 session object. Since these are local, this does not appear to be
2139 [Ben Laurie (CHATS)]
2141 *) Change from security patch (see 0.9.6e below) that did not affect
2142 the 0.9.6 release series:
2144 Remote buffer overflow in SSL3 protocol - an attacker could
2145 supply an oversized master key in Kerberos-enabled versions.
2147 [Ben Laurie (CHATS)]
2149 *) Change the SSL kerb5 codes to match RFC 2712.
2152 *) Make -nameopt work fully for req and add -reqopt switch.
2153 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2155 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2156 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2158 *) Make sure tests can be performed even if the corresponding algorithms
2159 have been removed entirely. This was also the last step to make
2160 OpenSSL compilable with DJGPP under all reasonable conditions.
2161 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2163 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2164 to allow version independent disabling of normally unselected ciphers,
2165 which may be activated as a side-effect of selecting a single cipher.
2167 (E.g., cipher list string "RSA" enables ciphersuites that are left
2168 out of "ALL" because they do not provide symmetric encryption.
2169 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2170 [Lutz Jaenicke, Bodo Moeller]
2172 *) Add appropriate support for separate platform-dependent build
2173 directories. The recommended way to make a platform-dependent
2174 build directory is the following (tested on Linux), maybe with
2177 # Place yourself outside of the OpenSSL source tree. In
2178 # this example, the environment variable OPENSSL_SOURCE
2179 # is assumed to contain the absolute OpenSSL source directory.
2180 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2181 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2182 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2183 mkdir -p `dirname $F`
2184 ln -s $OPENSSL_SOURCE/$F $F
2187 To be absolutely sure not to disturb the source tree, a "make clean"
2188 is a good thing. If it isn't successfull, don't worry about it,
2189 it probably means the source directory is very clean.
2192 *) Make sure any ENGINE control commands make local copies of string
2193 pointers passed to them whenever necessary. Otherwise it is possible
2194 the caller may have overwritten (or deallocated) the original string
2195 data when a later ENGINE operation tries to use the stored values.
2196 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2198 *) Improve diagnostics in file reading and command-line digests.
2199 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2201 *) Add AES modes CFB and OFB to the object database. Correct an
2202 error in AES-CFB decryption.
2205 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2206 allows existing EVP_CIPHER_CTX structures to be reused after
2207 calling EVP_*Final(). This behaviour is used by encryption
2208 BIOs and some applications. This has the side effect that
2209 applications must explicitly clean up cipher contexts with
2210 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2213 *) Check the values of dna and dnb in bn_mul_recursive before calling
2214 bn_mul_comba (a non zero value means the a or b arrays do not contain
2215 n2 elements) and fallback to bn_mul_normal if either is not zero.
2218 *) Fix escaping of non-ASCII characters when using the -subj option
2219 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2222 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2223 form for "surname", serialNumber has no short form.
2224 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2225 therefore remove "mail" short name for "internet 7".
2226 The OID for unique identifiers in X509 certificates is
2227 x500UniqueIdentifier, not uniqueIdentifier.
2228 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2231 *) Add an "init" command to the ENGINE config module and auto initialize
2232 ENGINEs. Without any "init" command the ENGINE will be initialized
2233 after all ctrl commands have been executed on it. If init=1 the
2234 ENGINE is initailized at that point (ctrls before that point are run
2235 on the uninitialized ENGINE and after on the initialized one). If
2236 init=0 then the ENGINE will not be iniatialized at all.
2239 *) Fix the 'app_verify_callback' interface so that the user-defined
2240 argument is actually passed to the callback: In the
2241 SSL_CTX_set_cert_verify_callback() prototype, the callback
2242 declaration has been changed from
2245 int (*cb)(X509_STORE_CTX *,void *);
2246 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2247 i=s->ctx->app_verify_callback(&ctx)
2248 has been changed into
2249 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2251 To update applications using SSL_CTX_set_cert_verify_callback(),
2252 a dummy argument can be added to their callback functions.
2253 [D. K. Smetters <smetters@parc.xerox.com>]
2255 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2256 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2258 *) Add and OPENSSL_LOAD_CONF define which will cause
2259 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2260 This allows older applications to transparently support certain
2261 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2262 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2263 load the config file and OPENSSL_add_all_algorithms_conf() which will
2264 always load it have also been added.
2267 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2268 Adjust NIDs and EVP layer.
2269 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2271 *) Config modules support in openssl utility.
2273 Most commands now load modules from the config file,
2274 though in a few (such as version) this isn't done
2275 because it couldn't be used for anything.
2277 In the case of ca and req the config file used is
2278 the same as the utility itself: that is the -config
2279 command line option can be used to specify an
2283 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2284 use "openssl_conf" if filename is NULL use default openssl config file.
2287 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2288 config section name. Add a new flag to tolerate a missing config file
2289 and move code to CONF_modules_load_file().
2292 *) Support for crypto accelerator cards from Accelerated Encryption
2293 Processing, www.aep.ie. (Use engine 'aep')
2294 The support was copied from 0.9.6c [engine] and adapted/corrected
2295 to work with the new engine framework.
2296 [AEP Inc. and Richard Levitte]
2298 *) Support for SureWare crypto accelerator cards from Baltimore
2299 Technologies. (Use engine 'sureware')
2300 The support was copied from 0.9.6c [engine] and adapted
2301 to work with the new engine framework.
2304 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2305 make the newer ENGINE framework commands for the CHIL engine work.
2306 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2308 *) Make it possible to produce shared libraries on ReliantUNIX.
2309 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2311 *) Add the configuration target debug-linux-ppro.
2312 Make 'openssl rsa' use the general key loading routines
2313 implemented in apps.c, and make those routines able to
2314 handle the key format FORMAT_NETSCAPE and the variant
2316 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2318 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2319 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2321 *) Add -keyform to rsautl, and document -engine.
2322 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2324 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2325 BIO_R_NO_SUCH_FILE error code rather than the generic
2326 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2329 *) Add new functions
2331 ERR_peek_last_error_line
2332 ERR_peek_last_error_line_data.
2333 These are similar to
2336 ERR_peek_error_line_data,
2337 but report on the latest error recorded rather than the first one
2338 still in the error queue.
2339 [Ben Laurie, Bodo Moeller]
2341 *) default_algorithms option in ENGINE config module. This allows things
2343 default_algorithms = ALL
2344 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2347 *) Prelminary ENGINE config module.
2350 *) New experimental application configuration code.
2353 *) Change the AES code to follow the same name structure as all other
2354 symmetric ciphers, and behave the same way. Move everything to
2355 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2356 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2358 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2359 [Ben Laurie and Theo de Raadt]
2361 *) Add option to output public keys in req command.
2362 [Massimiliano Pala madwolf@openca.org]
2364 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2365 (up to about 10% better than before for P-192 and P-224).
2368 *) New functions/macros
2370 SSL_CTX_set_msg_callback(ctx, cb)
2371 SSL_CTX_set_msg_callback_arg(ctx, arg)
2372 SSL_set_msg_callback(ssl, cb)
2373 SSL_set_msg_callback_arg(ssl, arg)
2375 to request calling a callback function
2377 void cb(int write_p, int version, int content_type,
2378 const void *buf, size_t len, SSL *ssl, void *arg)
2380 whenever a protocol message has been completely received
2381 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2382 protocol version according to which the SSL library interprets
2383 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2384 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2385 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2386 specification (change_cipher_spec(20), alert(21), handshake(22)).
2387 'buf' and 'len' point to the actual message, 'ssl' to the
2388 SSL object, and 'arg' is the application-defined value set by
2389 SSL[_CTX]_set_msg_callback_arg().
2391 'openssl s_client' and 'openssl s_server' have new '-msg' options
2392 to enable a callback that displays all protocol messages.
2395 *) Change the shared library support so shared libraries are built as
2396 soon as the corresponding static library is finished, and thereby get
2397 openssl and the test programs linked against the shared library.
2398 This still only happens when the keyword "shard" has been given to
2399 the configuration scripts.
2401 NOTE: shared library support is still an experimental thing, and
2402 backward binary compatibility is still not guaranteed.
2403 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2405 *) Add support for Subject Information Access extension.
2406 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2408 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2409 additional bytes when new memory had to be allocated, not just
2410 when reusing an existing buffer.
2413 *) New command line and configuration option 'utf8' for the req command.
2414 This allows field values to be specified as UTF8 strings.
2417 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2418 runs for the former and machine-readable output for the latter.
2421 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2422 of the e-mail address in the DN (i.e., it will go into a certificate
2423 extension only). The new configuration file option 'email_in_dn = no'
2424 has the same effect.
2425 [Massimiliano Pala madwolf@openca.org]
2427 *) Change all functions with names starting with des_ to be starting
2428 with DES_ instead. Add wrappers that are compatible with libdes,
2429 but are named _ossl_old_des_*. Finally, add macros that map the
2430 des_* symbols to the corresponding _ossl_old_des_* if libdes
2431 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2432 desired, the des_* symbols will be mapped to DES_*, with one
2435 Since we provide two compatibility mappings, the user needs to
2436 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2437 compatibility is desired. The default (i.e., when that macro
2438 isn't defined) is OpenSSL 0.9.6c compatibility.
2440 There are also macros that enable and disable the support of old
2441 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2442 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2443 are defined, the default will apply: to support the old des routines.
2445 In either case, one must include openssl/des.h to get the correct
2446 definitions. Do not try to just include openssl/des_old.h, that
2449 NOTE: This is a major break of an old API into a new one. Software
2450 authors are encouraged to switch to the DES_ style functions. Some
2451 time in the future, des_old.h and the libdes compatibility functions
2452 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2453 default), and then completely removed.
2456 *) Test for certificates which contain unsupported critical extensions.
2457 If such a certificate is found during a verify operation it is
2458 rejected by default: this behaviour can be overridden by either
2459 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2460 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2461 X509_supported_extension() has also been added which returns 1 if a
2462 particular extension is supported.
2465 *) Modify the behaviour of EVP cipher functions in similar way to digests
2466 to retain compatibility with existing code.
2469 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2470 compatibility with existing code. In particular the 'ctx' parameter does
2471 not have to be to be initialized before the call to EVP_DigestInit() and
2472 it is tidied up after a call to EVP_DigestFinal(). New function
2473 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2474 EVP_MD_CTX_copy() changed to not require the destination to be
2475 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2476 requires the destination to be valid.
2478 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2479 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2482 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2483 so that complete 'Handshake' protocol structures are kept in memory
2484 instead of overwriting 'msg_type' and 'length' with 'body' data.
2487 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2488 [Massimo Santin via Richard Levitte]
2490 *) Major restructuring to the underlying ENGINE code. This includes
2491 reduction of linker bloat, separation of pure "ENGINE" manipulation
2492 (initialisation, etc) from functionality dealing with implementations
2493 of specific crypto iterfaces. This change also introduces integrated
2494 support for symmetric ciphers and digest implementations - so ENGINEs
2495 can now accelerate these by providing EVP_CIPHER and EVP_MD
2496 implementations of their own. This is detailed in crypto/engine/README
2497 as it couldn't be adequately described here. However, there are a few
2498 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2499 were changed in the original introduction of ENGINE code have now
2500 reverted back - the hooking from this code to ENGINE is now a good
2501 deal more passive and at run-time, operations deal directly with
2502 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2503 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2504 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2505 they were not being used by the framework as there is no concept of a
2506 BIGNUM_METHOD and they could not be generalised to the new
2507 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2508 ENGINE_cpy() has been removed as it cannot be consistently defined in
2512 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2515 *) Change mkdef.pl to sort symbols that get the same entry number,
2516 and make sure the automatically generated functions ERR_load_*
2517 become part of libeay.num as well.
2520 *) New function SSL_renegotiate_pending(). This returns true once
2521 renegotiation has been requested (either SSL_renegotiate() call
2522 or HelloRequest/ClientHello receveived from the peer) and becomes
2523 false once a handshake has been completed.
2524 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2525 sends a HelloRequest, but does not ensure that a handshake takes
2526 place. SSL_renegotiate_pending() is useful for checking if the
2527 client has followed the request.)
2530 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2531 By default, clients may request session resumption even during
2532 renegotiation (if session ID contexts permit); with this option,
2533 session resumption is possible only in the first handshake.
2535 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2536 more bits available for options that should not be part of
2537 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2540 *) Add some demos for certificate and certificate request creation.
2543 *) Make maximum certificate chain size accepted from the peer application
2544 settable (SSL*_get/set_max_cert_list()), as proposed by
2545 "Douglas E. Engert" <deengert@anl.gov>.
2548 *) Add support for shared libraries for Unixware-7
2549 (Boyd Lynn Gerber <gerberb@zenez.com>).
2552 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2553 be done prior to destruction. Use this to unload error strings from
2554 ENGINEs that load their own error strings. NB: This adds two new API
2555 functions to "get" and "set" this destroy handler in an ENGINE.
2558 *) Alter all existing ENGINE implementations (except "openssl" and
2559 "openbsd") to dynamically instantiate their own error strings. This
2560 makes them more flexible to be built both as statically-linked ENGINEs
2561 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2562 Also, add stub code to each that makes building them as self-contained
2563 shared-libraries easier (see README.ENGINE).
2566 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2567 implementations into applications that are completely implemented in
2568 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2569 commands that can be used to configure what shared-library to load and
2570 to control aspects of the way it is handled. Also, made an update to
2571 the README.ENGINE file that brings its information up-to-date and
2572 provides some information and instructions on the "dynamic" ENGINE
2573 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2576 *) Make it possible to unload ranges of ERR strings with a new
2577 "ERR_unload_strings" function.
2580 *) Add a copy() function to EVP_MD.
2583 *) Make EVP_MD routines take a context pointer instead of just the
2584 md_data void pointer.
2587 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2588 that the digest can only process a single chunk of data
2589 (typically because it is provided by a piece of
2590 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2591 is only going to provide a single chunk of data, and hence the
2592 framework needn't accumulate the data for oneshot drivers.
2595 *) As with "ERR", make it possible to replace the underlying "ex_data"
2596 functions. This change also alters the storage and management of global
2597 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2598 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2599 index counters. The API functions that use this state have been changed
2600 to take a "class_index" rather than pointers to the class's local STACK
2601 and counter, and there is now an API function to dynamically create new
2602 classes. This centralisation allows us to (a) plug a lot of the
2603 thread-safety problems that existed, and (b) makes it possible to clean
2604 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2605 such data would previously have always leaked in application code and
2606 workarounds were in place to make the memory debugging turn a blind eye
2607 to it. Application code that doesn't use this new function will still
2608 leak as before, but their memory debugging output will announce it now
2609 rather than letting it slide.
2611 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2612 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2613 has a return value to indicate success or failure.
2616 *) Make it possible to replace the underlying "ERR" functions such that the
2617 global state (2 LHASH tables and 2 locks) is only used by the "default"
2618 implementation. This change also adds two functions to "get" and "set"
2619 the implementation prior to it being automatically set the first time
2620 any other ERR function takes place. Ie. an application can call "get",
2621 pass the return value to a module it has just loaded, and that module
2622 can call its own "set" function using that value. This means the
2623 module's "ERR" operations will use (and modify) the error state in the
2624 application and not in its own statically linked copy of OpenSSL code.
2627 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2628 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2629 the operation, and provides a more encapsulated way for external code
2630 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2631 to use these functions rather than manually incrementing the counts.
2633 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2636 *) Add EVP test program.
2639 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2642 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2643 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2644 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2645 These allow a CRL to be built without having to access X509_CRL fields
2646 directly. Modify 'ca' application to use new functions.
2649 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2650 bug workarounds. Rollback attack detection is a security feature.
2651 The problem will only arise on OpenSSL servers when TLSv1 is not
2652 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2653 Software authors not wanting to support TLSv1 will have special reasons
2654 for their choice and can explicitly enable this option.
2655 [Bodo Moeller, Lutz Jaenicke]
2657 *) Rationalise EVP so it can be extended: don't include a union of
2658 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2659 (similar to those existing for EVP_CIPHER_CTX).
2664 EVP_MD_CTX_init(&md); /* new function call */
2665 EVP_DigestInit(&md, EVP_sha1());
2666 EVP_DigestUpdate(&md, in, len);
2667 EVP_DigestFinal(&md, out, NULL);
2668 EVP_MD_CTX_cleanup(&md); /* new function call */
2672 *) Make DES key schedule conform to the usual scheme, as well as
2673 correcting its structure. This means that calls to DES functions
2674 now have to pass a pointer to a des_key_schedule instead of a
2675 plain des_key_schedule (which was actually always a pointer
2678 des_key_schedule ks;
2680 des_set_key_checked(..., &ks);
2681 des_ncbc_encrypt(..., &ks, ...);
2683 (Note that a later change renames 'des_...' into 'DES_...'.)
2686 *) Initial reduction of linker bloat: the use of some functions, such as
2687 PEM causes large amounts of unused functions to be linked in due to
2688 poor organisation. For example pem_all.c contains every PEM function
2689 which has a knock on effect of linking in large amounts of (unused)
2690 ASN1 code. Grouping together similar functions and splitting unrelated
2691 functions prevents this.
2694 *) Cleanup of EVP macros.
2697 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2698 correct _ecb suffix.
2701 *) Add initial OCSP responder support to ocsp application. The
2702 revocation information is handled using the text based index
2703 use by the ca application. The responder can either handle
2704 requests generated internally, supplied in files (for example
2705 via a CGI script) or using an internal minimal server.
2708 *) Add configuration choices to get zlib compression for TLS.
2711 *) Changes to Kerberos SSL for RFC 2712 compliance:
2712 1. Implemented real KerberosWrapper, instead of just using
2713 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2714 2. Implemented optional authenticator field of KerberosWrapper.
2716 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2717 and authenticator structs; see crypto/krb5/.
2719 Generalized Kerberos calls to support multiple Kerberos libraries.
2720 [Vern Staats <staatsvr@asc.hpc.mil>,
2721 Jeffrey Altman <jaltman@columbia.edu>
2722 via Richard Levitte]
2724 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2725 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2726 values for each of the key sizes rather than having just
2727 parameters (and 'speed' generating keys each time).
2730 *) Speed up EVP routines.
2733 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2734 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2735 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2736 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2738 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2739 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2740 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2743 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2745 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2748 *) Added the OS2-EMX target.
2749 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2751 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2752 to support NCONF routines in extension code. New function CONF_set_nconf()
2753 to allow functions which take an NCONF to also handle the old LHASH
2754 structure: this means that the old CONF compatible routines can be
2755 retained (in particular wrt extensions) without having to duplicate the
2756 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2759 *) Enhance the general user interface with mechanisms for inner control
2760 and with possibilities to have yes/no kind of prompts.
2763 *) Change all calls to low level digest routines in the library and
2764 applications to use EVP. Add missing calls to HMAC_cleanup() and
2765 don't assume HMAC_CTX can be copied using memcpy().
2766 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2768 *) Add the possibility to control engines through control names but with
2769 arbitrary arguments instead of just a string.
2770 Change the key loaders to take a UI_METHOD instead of a callback
2771 function pointer. NOTE: this breaks binary compatibility with earlier
2772 versions of OpenSSL [engine].
2773 Adapt the nCipher code for these new conditions and add a card insertion
2777 *) Enhance the general user interface with mechanisms to better support
2778 dialog box interfaces, application-defined prompts, the possibility
2779 to use defaults (for example default passwords from somewhere else)
2780 and interrupts/cancellations.
2783 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2784 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2787 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2788 tidy up some unnecessarily weird code in 'sk_new()').
2789 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2791 *) Change the key loading routines for ENGINEs to use the same kind
2792 callback (pem_password_cb) as all other routines that need this
2796 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2797 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2798 than this minimum value is recommended.
2801 *) New random seeder for OpenVMS, using the system process statistics
2802 that are easily reachable.
2805 *) Windows apparently can't transparently handle global
2806 variables defined in DLLs. Initialisations such as:
2808 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2810 wont compile. This is used by the any applications that need to
2811 declare their own ASN1 modules. This was fixed by adding the option
2812 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2813 needed for static libraries under Win32.
2816 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2817 setting of purpose and trust fields. New X509_STORE trust and
2818 purpose functions and tidy up setting in other SSL functions.
2821 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2822 structure. These are inherited by X509_STORE_CTX when it is
2823 initialised. This allows various defaults to be set in the
2824 X509_STORE structure (such as flags for CRL checking and custom
2825 purpose or trust settings) for functions which only use X509_STORE_CTX
2826 internally such as S/MIME.
2828 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2829 trust settings if they are not set in X509_STORE. This allows X509_STORE
2830 purposes and trust (in S/MIME for example) to override any set by default.
2832 Add command line options for CRL checking to smime, s_client and s_server
2836 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2837 are set then the CRL is looked up in the X509_STORE structure and
2838 its validity and signature checked, then if the certificate is found
2839 in the CRL the verify fails with a revoked error.
2841 Various new CRL related callbacks added to X509_STORE_CTX structure.
2843 Command line options added to 'verify' application to support this.
2845 This needs some additional work, such as being able to handle multiple
2846 CRLs with different times, extension based lookup (rather than just
2847 by subject name) and ultimately more complete V2 CRL extension
2851 *) Add a general user interface API (crypto/ui/). This is designed
2852 to replace things like des_read_password and friends (backward
2853 compatibility functions using this new API are provided).
2854 The purpose is to remove prompting functions from the DES code
2855 section as well as provide for prompting through dialog boxes in
2856 a window system and the like.
2859 *) Add "ex_data" support to ENGINE so implementations can add state at a
2860 per-structure level rather than having to store it globally.
2863 *) Make it possible for ENGINE structures to be copied when retrieved by
2864 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2865 This causes the "original" ENGINE structure to act like a template,
2866 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2867 operational state can be localised to each ENGINE structure, despite the
2868 fact they all share the same "methods". New ENGINE structures returned in
2869 this case have no functional references and the return value is the single
2870 structural reference. This matches the single structural reference returned
2871 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2875 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2876 needs to match any other type at all we need to manually clear the
2880 *) Changes to the "openssl engine" utility to include;
2881 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2882 about an ENGINE's available control commands.
2883 - executing control commands from command line arguments using the
2884 '-pre' and '-post' switches. '-post' is only used if '-t' is
2885 specified and the ENGINE is successfully initialised. The syntax for
2886 the individual commands are colon-separated, for example;
2887 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2890 *) New dynamic control command support for ENGINEs. ENGINEs can now
2891 declare their own commands (numbers), names (strings), descriptions,
2892 and input types for run-time discovery by calling applications. A
2893 subset of these commands are implicitly classed as "executable"
2894 depending on their input type, and only these can be invoked through
2895 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2896 can be based on user input, config files, etc). The distinction is
2897 that "executable" commands cannot return anything other than a boolean
2898 result and can only support numeric or string input, whereas some
2899 discoverable commands may only be for direct use through
2900 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2901 pointers, or other custom uses. The "executable" commands are to
2902 support parameterisations of ENGINE behaviour that can be
2903 unambiguously defined by ENGINEs and used consistently across any
2904 OpenSSL-based application. Commands have been added to all the
2905 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2906 control over shared-library paths without source code alterations.
2909 *) Changed all ENGINE implementations to dynamically allocate their
2910 ENGINEs rather than declaring them statically. Apart from this being
2911 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2912 this also allows the implementations to compile without using the
2913 internal engine_int.h header.
2916 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2917 'const' value. Any code that should be able to modify a RAND_METHOD
2918 should already have non-const pointers to it (ie. they should only
2919 modify their own ones).
2922 *) Made a variety of little tweaks to the ENGINE code.
2923 - "atalla" and "ubsec" string definitions were moved from header files
2924 to C code. "nuron" string definitions were placed in variables
2925 rather than hard-coded - allowing parameterisation of these values
2926 later on via ctrl() commands.
2927 - Removed unused "#if 0"'d code.
2928 - Fixed engine list iteration code so it uses ENGINE_free() to release
2929 structural references.
2930 - Constified the RAND_METHOD element of ENGINE structures.
2931 - Constified various get/set functions as appropriate and added
2932 missing functions (including a catch-all ENGINE_cpy that duplicates
2933 all ENGINE values onto a new ENGINE except reference counts/state).
2934 - Removed NULL parameter checks in get/set functions. Setting a method
2935 or function to NULL is a way of cancelling out a previously set
2936 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2937 and doesn't justify the extra error symbols and code.
2938 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2939 flags from engine_int.h to engine.h.
2940 - Changed prototypes for ENGINE handler functions (init(), finish(),
2941 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2944 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2945 to the algorithm using long division. The binary algorithm can be
2946 used only if the modulus is odd. On 32-bit systems, it is faster
2947 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2948 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2949 up to 450 bits. In 64-bit environments, the binary algorithm
2950 appears to be advantageous for much longer moduli; here we use it
2951 for moduli up to 2048 bits.
2954 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2955 could not support the combine flag in choice fields.
2958 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2959 extensions from a certificate request to the certificate.
2962 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2963 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2964 file: this allows the display of the certificate about to be
2965 signed to be customised, to allow certain fields to be included
2966 or excluded and extension details. The old system didn't display
2967 multicharacter strings properly, omitted fields not in the policy
2968 and couldn't display additional details such as extensions.
2971 *) Function EC_POINTs_mul for multiple scalar multiplication
2972 of an arbitrary number of elliptic curve points
2973 \sum scalars[i]*points[i],
2974 optionally including the generator defined for the EC_GROUP:
2975 scalar*generator + \sum scalars[i]*points[i].
2977 EC_POINT_mul is a simple wrapper function for the typical case
2978 that the point list has just one item (besides the optional
2982 *) First EC_METHODs for curves over GF(p):
2984 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2985 operations and provides various method functions that can also
2986 operate with faster implementations of modular arithmetic.
2988 EC_GFp_mont_method() reuses most functions that are part of
2989 EC_GFp_simple_method, but uses Montgomery arithmetic.
2991 [Bodo Moeller; point addition and point doubling
2992 implementation directly derived from source code provided by
2993 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2995 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2996 crypto/ec/ec_lib.c):
2998 Curves are EC_GROUP objects (with an optional group generator)
2999 based on EC_METHODs that are built into the library.
3001 Points are EC_POINT objects based on EC_GROUP objects.
3003 Most of the framework would be able to handle curves over arbitrary
3004 finite fields, but as there are no obvious types for fields other
3005 than GF(p), some functions are limited to that for now.
3008 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3009 that the file contains a complete HTTP response.
3012 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3013 change the def and num file printf format specifier from "%-40sXXX"
3014 to "%-39s XXX". The latter will always guarantee a space after the
3015 field while the former will cause them to run together if the field
3016 is 40 of more characters long.
3019 *) Constify the cipher and digest 'method' functions and structures
3020 and modify related functions to take constant EVP_MD and EVP_CIPHER
3024 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3025 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3028 *) Modify EVP_Digest*() routines so they now return values. Although the
3029 internal software routines can never fail additional hardware versions
3033 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3035 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3036 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3039 ERR_R_NESTED_ASN1_ERROR
3041 ERR_R_MISSING_ASN1_EOS
3042 were 4 .. 9, conflicting with
3043 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3045 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3046 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3048 Add new error code 'ERR_R_INTERNAL_ERROR'.
3051 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3055 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3056 sets the subject name for a new request or supersedes the
3057 subject name in a given request. Formats that can be parsed are
3058 'CN=Some Name, OU=myOU, C=IT'
3060 'CN=Some Name/OU=myOU/C=IT'.
3062 Add options '-batch' and '-verbose' to 'openssl req'.
3063 [Massimiliano Pala <madwolf@hackmasters.net>]
3065 *) Introduce the possibility to access global variables through
3066 functions on platform were that's the best way to handle exporting
3067 global variables in shared libraries. To enable this functionality,
3068 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3069 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3070 is normally done by Configure or something similar).
3072 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3073 in the source file (foo.c) like this:
3075 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3076 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3078 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3079 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3081 OPENSSL_DECLARE_GLOBAL(int,foo);
3082 #define foo OPENSSL_GLOBAL_REF(foo)
3083 OPENSSL_DECLARE_GLOBAL(double,bar);
3084 #define bar OPENSSL_GLOBAL_REF(bar)
3086 The #defines are very important, and therefore so is including the
3087 header file everywhere where the defined globals are used.
3089 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3090 of ASN.1 items, but that structure is a bit different.
3092 The largest change is in util/mkdef.pl which has been enhanced with
3093 better and easier to understand logic to choose which symbols should
3094 go into the Windows .def files as well as a number of fixes and code
3095 cleanup (among others, algorithm keywords are now sorted
3096 lexicographically to avoid constant rewrites).
3099 *) In BN_div() keep a copy of the sign of 'num' before writing the
3100 result to 'rm' because if rm==num the value will be overwritten
3101 and produce the wrong result if 'num' is negative: this caused
3102 problems with BN_mod() and BN_nnmod().
3105 *) Function OCSP_request_verify(). This checks the signature on an
3106 OCSP request and verifies the signer certificate. The signer
3107 certificate is just checked for a generic purpose and OCSP request
3111 *) Add OCSP_check_validity() function to check the validity of OCSP
3112 responses. OCSP responses are prepared in real time and may only
3113 be a few seconds old. Simply checking that the current time lies
3114 between thisUpdate and nextUpdate max reject otherwise valid responses
3115 caused by either OCSP responder or client clock inaccuracy. Instead
3116 we allow thisUpdate and nextUpdate to fall within a certain period of
3117 the current time. The age of the response can also optionally be
3118 checked. Two new options -validity_period and -status_age added to
3122 *) If signature or public key algorithm is unrecognized print out its
3123 OID rather that just UNKNOWN.
3126 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3127 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3128 ID to be generated from the issuer certificate alone which can then be
3129 passed to OCSP_id_issuer_cmp().
3132 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3133 ASN1 modules to export functions returning ASN1_ITEM pointers
3134 instead of the ASN1_ITEM structures themselves. This adds several
3135 new macros which allow the underlying ASN1 function/structure to
3136 be accessed transparently. As a result code should not use ASN1_ITEM
3137 references directly (such as &X509_it) but instead use the relevant
3138 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3139 use of the new ASN1 code on platforms where exporting structures
3140 is problematical (for example in shared libraries) but exporting
3141 functions returning pointers to structures is not.
3144 *) Add support for overriding the generation of SSL/TLS session IDs.
3145 These callbacks can be registered either in an SSL_CTX or per SSL.
3146 The purpose of this is to allow applications to control, if they wish,
3147 the arbitrary values chosen for use as session IDs, particularly as it
3148 can be useful for session caching in multiple-server environments. A
3149 command-line switch for testing this (and any client code that wishes
3150 to use such a feature) has been added to "s_server".
3151 [Geoff Thorpe, Lutz Jaenicke]
3153 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3154 of the form '#if defined(...) || defined(...) || ...' and
3155 '#if !defined(...) && !defined(...) && ...'. This also avoids
3156 the growing number of special cases it was previously handling.
3159 *) Make all configuration macros available for application by making
3160 sure they are available in opensslconf.h, by giving them names starting
3161 with "OPENSSL_" to avoid conflicts with other packages and by making
3162 sure e_os2.h will cover all platform-specific cases together with
3164 Additionally, it is now possible to define configuration/platform-
3165 specific names (called "system identities"). In the C code, these
3166 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3167 macro with the name beginning with "OPENSSL_SYS_", which is determined
3168 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3172 *) New option -set_serial to 'req' and 'x509' this allows the serial
3173 number to use to be specified on the command line. Previously self
3174 signed certificates were hard coded with serial number 0 and the
3175 CA options of 'x509' had to use a serial number in a file which was
3179 *) New options to 'ca' utility to support V2 CRL entry extensions.
3180 Currently CRL reason, invalidity date and hold instruction are
3181 supported. Add new CRL extensions to V3 code and some new objects.
3184 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3185 disable standard block padding (aka PKCS#5 padding) in the EVP
3186 API, which was previously mandatory. This means that the data is
3187 not padded in any way and so the total length much be a multiple
3188 of the block size, otherwise an error occurs.
3191 *) Initial (incomplete) OCSP SSL support.
3194 *) New function OCSP_parse_url(). This splits up a URL into its host,
3195 port and path components: primarily to parse OCSP URLs. New -url
3196 option to ocsp utility.
3199 *) New nonce behavior. The return value of OCSP_check_nonce() now
3200 reflects the various checks performed. Applications can decide
3201 whether to tolerate certain situations such as an absent nonce
3202 in a response when one was present in a request: the ocsp application
3203 just prints out a warning. New function OCSP_add1_basic_nonce()
3204 this is to allow responders to include a nonce in a response even if
3205 the request is nonce-less.
3208 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3209 skipped when using openssl x509 multiple times on a single input file,
3210 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3213 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3214 set string type: to handle setting ASN1_TIME structures. Fix ca
3215 utility to correctly initialize revocation date of CRLs.
3218 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3219 the clients preferred ciphersuites and rather use its own preferences.
3220 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3221 Internet Explorer by ensuring unchanged hash method during stepup.
3222 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3225 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3226 to aes and add a new 'exist' option to print out symbols that don't
3230 *) Additional options to ocsp utility to allow flags to be set and
3231 additional certificates supplied.
3234 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3235 OCSP client a number of certificate to only verify the response
3239 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3240 handle the new API. Currently only ECB, CBC modes supported. Add new
3243 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3244 Encryption Standard (AES) Ciphersuites for Transport Layer
3245 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3246 not enabled by default and were not part of the "ALL" ciphersuite
3247 alias because they were not yet official; they could be
3248 explicitly requested by specifying the "AESdraft" ciphersuite
3249 group alias. In the final release of OpenSSL 0.9.7, the group
3250 alias is called "AES" and is part of "ALL".)
3251 [Ben Laurie, Steve Henson, Bodo Moeller]
3253 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3254 request to response.
3257 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3258 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3259 extract information from a certificate request. OCSP_response_create()
3260 creates a response and optionally adds a basic response structure.
3261 OCSP_basic_add1_status() adds a complete single response to a basic
3262 response and returns the OCSP_SINGLERESP structure just added (to allow
3263 extensions to be included for example). OCSP_basic_add1_cert() adds a
3264 certificate to a basic response and OCSP_basic_sign() signs a basic
3265 response with various flags. New helper functions ASN1_TIME_check()
3266 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3267 (converts ASN1_TIME to GeneralizedTime).
3270 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3271 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3272 structure from a certificate. X509_pubkey_digest() digests the public_key
3273 contents: this is used in various key identifiers.
3276 *) Make sk_sort() tolerate a NULL argument.
3277 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3279 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3280 passed by the function are trusted implicitly. If any of them signed the
3281 response then it is assumed to be valid and is not verified.
3284 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3285 to data. This was previously part of the PKCS7 ASN1 code. This
3286 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3287 [Steve Henson, reported by Kenneth R. Robinette
3288 <support@securenetterm.com>]
3290 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3291 routines: without these tracing memory leaks is very painful.
3292 Fix leaks in PKCS12 and PKCS7 routines.
3295 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3296 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3297 effectively meant GeneralizedTime would never be used. Now it
3298 is initialised to -1 but X509_time_adj() now has to check the value
3299 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3300 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3301 [Steve Henson, reported by Kenneth R. Robinette
3302 <support@securenetterm.com>]
3304 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3305 result in a zero length in the ASN1_INTEGER structure which was
3306 not consistent with the structure when d2i_ASN1_INTEGER() was used
3307 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3308 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3309 where it did not print out a minus for negative ASN1_INTEGER.
3312 *) Add summary printout to ocsp utility. The various functions which
3313 convert status values to strings have been renamed to:
3314 OCSP_response_status_str(), OCSP_cert_status_str() and
3315 OCSP_crl_reason_str() and are no longer static. New options
3316 to verify nonce values and to disable verification. OCSP response
3317 printout format cleaned up.
3320 *) Add additional OCSP certificate checks. These are those specified
3321 in RFC2560. This consists of two separate checks: the CA of the
3322 certificate being checked must either be the OCSP signer certificate
3323 or the issuer of the OCSP signer certificate. In the latter case the
3324 OCSP signer certificate must contain the OCSP signing extended key
3325 usage. This check is performed by attempting to match the OCSP
3326 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3327 in the OCSP_CERTID structures of the response.
3330 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3331 and related routines. This uses the standard OpenSSL certificate
3332 verify routines to perform initial checks (just CA validity) and
3333 to obtain the certificate chain. Then additional checks will be
3334 performed on the chain. Currently the root CA is checked to see
3335 if it is explicitly trusted for OCSP signing. This is used to set
3336 a root CA as a global signing root: that is any certificate that
3337 chains to that CA is an acceptable OCSP signing certificate.
3340 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3341 extensions from a separate configuration file.
3342 As when reading extensions from the main configuration file,
3343 the '-extensions ...' option may be used for specifying the
3345 [Massimiliano Pala <madwolf@comune.modena.it>]
3347 *) New OCSP utility. Allows OCSP requests to be generated or
3348 read. The request can be sent to a responder and the output
3349 parsed, outputed or printed in text form. Not complete yet:
3350 still needs to check the OCSP response validity.
3353 *) New subcommands for 'openssl ca':
3354 'openssl ca -status <serial>' prints the status of the cert with
3355 the given serial number (according to the index file).
3356 'openssl ca -updatedb' updates the expiry status of certificates
3358 [Massimiliano Pala <madwolf@comune.modena.it>]
3360 *) New '-newreq-nodes' command option to CA.pl. This is like
3361 '-newreq', but calls 'openssl req' with the '-nodes' option
3362 so that the resulting key is not encrypted.
3363 [Damien Miller <djm@mindrot.org>]
3365 *) New configuration for the GNU Hurd.
3366 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3368 *) Initial code to implement OCSP basic response verify. This
3369 is currently incomplete. Currently just finds the signer's
3370 certificate and verifies the signature on the response.
3373 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3374 value of OPENSSLDIR. This is available via the new '-d' option
3375 to 'openssl version', and is also included in 'openssl version -a'.
3378 *) Allowing defining memory allocation callbacks that will be given
3379 file name and line number information in additional arguments
3380 (a const char* and an int). The basic functionality remains, as
3381 well as the original possibility to just replace malloc(),
3382 realloc() and free() by functions that do not know about these
3383 additional arguments. To register and find out the current
3384 settings for extended allocation functions, the following
3385 functions are provided:
3387 CRYPTO_set_mem_ex_functions
3388 CRYPTO_set_locked_mem_ex_functions
3389 CRYPTO_get_mem_ex_functions
3390 CRYPTO_get_locked_mem_ex_functions
3392 These work the same way as CRYPTO_set_mem_functions and friends.
3393 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3394 extended allocation function is enabled.
3395 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3396 a conventional allocation function is enabled.
3397 [Richard Levitte, Bodo Moeller]
3399 *) Finish off removing the remaining LHASH function pointer casts.
3400 There should no longer be any prototype-casting required when using
3401 the LHASH abstraction, and any casts that remain are "bugs". See
3402 the callback types and macros at the head of lhash.h for details
3403 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3406 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3407 If /dev/[u]random devices are not available or do not return enough
3408 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3410 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3411 /etc/entropy will be queried once each in this sequence, quering stops
3412 when enough entropy was collected without querying more sockets.
3415 *) Change the Unix RAND_poll() variant to be able to poll several
3416 random devices, as specified by DEVRANDOM, until a sufficient amount
3417 of data has been collected. We spend at most 10 ms on each file
3418 (select timeout) and read in non-blocking mode. DEVRANDOM now
3419 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3420 (previously it was just the string "/dev/urandom"), so on typical
3421 platforms the 10 ms delay will never occur.
3422 Also separate out the Unix variant to its own file, rand_unix.c.
3423 For VMS, there's a currently-empty rand_vms.c.
3426 *) Move OCSP client related routines to ocsp_cl.c. These
3427 provide utility functions which an application needing
3428 to issue a request to an OCSP responder and analyse the
3429 response will typically need: as opposed to those which an
3430 OCSP responder itself would need which will be added later.
3432 OCSP_request_sign() signs an OCSP request with an API similar
3433 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3434 response. OCSP_response_get1_basic() extracts basic response
3435 from response. OCSP_resp_find_status(): finds and extracts status
3436 information from an OCSP_CERTID structure (which will be created
3437 when the request structure is built). These are built from lower
3438 level functions which work on OCSP_SINGLERESP structures but
3439 wont normally be used unless the application wishes to examine
3440 extensions in the OCSP response for example.
3442 Replace nonce routines with a pair of functions.
3443 OCSP_request_add1_nonce() adds a nonce value and optionally
3444 generates a random value. OCSP_check_nonce() checks the
3445 validity of the nonce in an OCSP response.
3448 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3449 This doesn't copy the supplied OCSP_CERTID and avoids the
3450 need to free up the newly created id. Change return type
3451 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3452 This can then be used to add extensions to the request.
3453 Deleted OCSP_request_new(), since most of its functionality
3454 is now in OCSP_REQUEST_new() (and the case insensitive name
3455 clash) apart from the ability to set the request name which
3456 will be added elsewhere.
3459 *) Update OCSP API. Remove obsolete extensions argument from
3460 various functions. Extensions are now handled using the new
3461 OCSP extension code. New simple OCSP HTTP function which
3462 can be used to send requests and parse the response.
3465 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3466 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3467 uses the special reorder version of SET OF to sort the attributes
3468 and reorder them to match the encoded order. This resolves a long
3469 standing problem: a verify on a PKCS7 structure just after signing
3470 it used to fail because the attribute order did not match the
3471 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3472 it uses the received order. This is necessary to tolerate some broken
3473 software that does not order SET OF. This is handled by encoding
3474 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3475 to produce the required SET OF.
3478 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3479 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3480 files to get correct declarations of the ASN.1 item variables.
3483 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3484 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3485 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3486 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3487 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3488 ASN1_ITEM and no wrapper functions.
3491 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3492 replace the old function pointer based I/O routines. Change most of
3493 the *_d2i_bio() and *_d2i_fp() functions to use these.
3496 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3497 lines, recognice more "algorithms" that can be deselected, and make
3498 it complain about algorithm deselection that isn't recognised.
3501 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3502 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3503 to use new functions. Add NO_ASN1_OLD which can be set to remove
3504 some old style ASN1 functions: this can be used to determine if old
3505 code will still work when these eventually go away.
3508 *) New extension functions for OCSP structures, these follow the
3509 same conventions as certificates and CRLs.
3512 *) New function X509V3_add1_i2d(). This automatically encodes and
3513 adds an extension. Its behaviour can be customised with various
3514 flags to append, replace or delete. Various wrappers added for
3515 certifcates and CRLs.
3518 *) Fix to avoid calling the underlying ASN1 print routine when
3519 an extension cannot be parsed. Correct a typo in the
3520 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3523 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3524 entries for variables.
3527 *) Add functionality to apps/openssl.c for detecting locking
3528 problems: As the program is single-threaded, all we have
3529 to do is register a locking callback using an array for
3530 storing which locks are currently held by the program.
3533 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3534 SSL_get_ex_data_X509_STORE_idx(), which is used in
3535 ssl_verify_cert_chain() and thus can be called at any time
3536 during TLS/SSL handshakes so that thread-safety is essential.
3537 Unfortunately, the ex_data design is not at all suited
3538 for multi-threaded use, so it probably should be abolished.
3541 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3542 [Broadcom, tweaked and integrated by Geoff Thorpe]
3544 *) Move common extension printing code to new function
3545 X509V3_print_extensions(). Reorganise OCSP print routines and
3546 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3549 *) New function X509_signature_print() to remove duplication in some
3553 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3554 set (this was treated exactly the same as SET OF previously). This
3555 is used to reorder the STACK representing the structure to match the
3556 encoding. This will be used to get round a problem where a PKCS7
3557 structure which was signed could not be verified because the STACK
3558 order did not reflect the encoded order.
3561 *) Reimplement the OCSP ASN1 module using the new code.
3564 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3565 for its ASN1 operations. The old style function pointers still exist
3566 for now but they will eventually go away.
3569 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3570 completely replaces the old ASN1 functionality with a table driven
3571 encoder and decoder which interprets an ASN1_ITEM structure describing
3572 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3573 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3574 has also been converted to the new form.
3577 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3578 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3579 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3580 for negative moduli.
3583 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3584 of not touching the result's sign bit.
3587 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3591 *) Changed the LHASH code to use prototypes for callbacks, and created
3592 macros to declare and implement thin (optionally static) functions
3593 that provide type-safety and avoid function pointer casting for the
3594 type-specific callbacks.
3597 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3599 [Veers Staats <staatsvr@asc.hpc.mil>,
3600 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3602 *) Reformat the FAQ so the different questions and answers can be divided
3603 in sections depending on the subject.
3606 *) Have the zlib compression code load ZLIB.DLL dynamically under
3610 *) New function BN_mod_sqrt for computing square roots modulo a prime
3611 (using the probabilistic Tonelli-Shanks algorithm unless
3612 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3613 be handled deterministically).
3614 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3616 *) Make BN_mod_inverse faster by explicitly handling small quotients
3617 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3618 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3621 *) New function BN_kronecker.
3624 *) Fix BN_gcd so that it works on negative inputs; the result is
3625 positive unless both parameters are zero.
3626 Previously something reasonably close to an infinite loop was
3627 possible because numbers could be growing instead of shrinking
3628 in the implementation of Euclid's algorithm.
3631 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3632 sign of the number in question.
3634 Fix BN_is_word(a,w) to work correctly for w == 0.
3636 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3637 because its test if the absolute value of 'a' equals 'w'.
3638 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3639 it exists mostly for use in the implementations of BN_is_zero(),
3640 BN_is_one(), and BN_is_word().
3643 *) New function BN_swap.
3646 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3647 the exponentiation functions are more likely to produce reasonable
3648 results on negative inputs.
3651 *) Change BN_mod_mul so that the result is always non-negative.
3652 Previously, it could be negative if one of the factors was negative;
3653 I don't think anyone really wanted that behaviour.
3656 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3657 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3658 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3659 and add new functions:
3668 BN_mod_lshift1_quick
3672 These functions always generate non-negative results.
3674 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3675 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3677 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3678 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3679 be reduced modulo m.
3680 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3683 The following entry accidentily appeared in the CHANGES file
3684 distributed with OpenSSL 0.9.7. The modifications described in
3685 it do *not* apply to OpenSSL 0.9.7.
3687 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3688 was actually never needed) and in BN_mul(). The removal in BN_mul()
3689 required a small change in bn_mul_part_recursive() and the addition
3690 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3691 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3692 bn_sub_words() and bn_add_words() except they take arrays with
3697 *) In 'openssl passwd', verify passwords read from the terminal
3698 unless the '-salt' option is used (which usually means that
3699 verification would just waste user's time since the resulting
3700 hash is going to be compared with some given password hash)
3701 or the new '-noverify' option is used.
3703 This is an incompatible change, but it does not affect
3704 non-interactive use of 'openssl passwd' (passwords on the command
3705 line, '-stdin' option, '-in ...' option) and thus should not
3709 *) Remove all references to RSAref, since there's no more need for it.
3712 *) Make DSO load along a path given through an environment variable
3713 (SHLIB_PATH) with shl_load().
3716 *) Constify the ENGINE code as a result of BIGNUM constification.
3717 Also constify the RSA code and most things related to it. In a
3718 few places, most notable in the depth of the ASN.1 code, ugly
3719 casts back to non-const were required (to be solved at a later
3723 *) Make it so the openssl application has all engines loaded by default.
3726 *) Constify the BIGNUM routines a little more.
3729 *) Add the following functions:
3731 ENGINE_load_cswift()
3733 ENGINE_load_atalla()
3735 ENGINE_load_builtin_engines()
3737 That way, an application can itself choose if external engines that
3738 are built-in in OpenSSL shall ever be used or not. The benefit is
3739 that applications won't have to be linked with libdl or other dso
3740 libraries unless it's really needed.
3742 Changed 'openssl engine' to load all engines on demand.
3743 Changed the engine header files to avoid the duplication of some
3744 declarations (they differed!).
3747 *) 'openssl engine' can now list capabilities.
3750 *) Better error reporting in 'openssl engine'.
3753 *) Never call load_dh_param(NULL) in s_server.
3756 *) Add engine application. It can currently list engines by name and
3757 identity, and test if they are actually available.
3760 *) Improve RPM specification file by forcing symbolic linking and making
3761 sure the installed documentation is also owned by root.root.
3762 [Damien Miller <djm@mindrot.org>]
3764 *) Give the OpenSSL applications more possibilities to make use of
3765 keys (public as well as private) handled by engines.
3768 *) Add OCSP code that comes from CertCo.
3771 *) Add VMS support for the Rijndael code.
3774 *) Added untested support for Nuron crypto accelerator.
3777 *) Add support for external cryptographic devices. This code was
3778 previously distributed separately as the "engine" branch.
3779 [Geoff Thorpe, Richard Levitte]
3781 *) Rework the filename-translation in the DSO code. It is now possible to
3782 have far greater control over how a "name" is turned into a filename
3783 depending on the operating environment and any oddities about the
3784 different shared library filenames on each system.
3787 *) Support threads on FreeBSD-elf in Configure.
3790 *) Fix for SHA1 assembly problem with MASM: it produces
3791 warnings about corrupt line number information when assembling
3792 with debugging information. This is caused by the overlapping
3794 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3797 NCONF_get_number() has no error checking at all. As a replacement,
3798 NCONF_get_number_e() is defined (_e for "error checking") and is
3799 promoted strongly. The old NCONF_get_number is kept around for
3800 binary backward compatibility.
3801 Make it possible for methods to load from something other than a BIO,
3802 by providing a function pointer that is given a name instead of a BIO.
3803 For example, this could be used to load configuration data from an
3807 *) Fix for non blocking accept BIOs. Added new I/O special reason
3808 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3809 with non blocking I/O was not possible because no retry code was
3810 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3814 *) Added the beginnings of Rijndael support.
3817 *) Fix for bug in DirectoryString mask setting. Add support for
3818 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3819 to allow certificate printing to more controllable, additional
3820 'certopt' option to 'x509' to allow new printing options to be
3824 *) Clean old EAY MD5 hack from e_os.h.
3827 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3829 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3830 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3831 [Joe Orton, Steve Henson]
3833 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3835 *) Fix additional bug revealed by the NISCC test suite:
3837 Stop bug triggering large recursion when presented with
3838 certain ASN.1 tags (CVE-2003-0851)
3841 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3843 *) Fix various bugs revealed by running the NISCC test suite:
3845 Stop out of bounds reads in the ASN1 code when presented with
3846 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3848 If verify callback ignores invalid public key errors don't try to check
3849 certificate signature with the NULL public key.
3853 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3854 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3858 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3859 extra data after the compression methods not only for TLS 1.0
3860 but also for SSL 3.0 (as required by the specification).
3861 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3863 *) Change X509_certificate_type() to mark the key as exported/exportable
3864 when it's 512 *bits* long, not 512 bytes.
3867 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3869 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3870 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3871 a protocol version number mismatch like a decryption error
3872 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3875 *) Turn on RSA blinding by default in the default implementation
3876 to avoid a timing attack. Applications that don't want it can call
3877 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3878 They would be ill-advised to do so in most cases.
3879 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3881 *) Change RSA blinding code so that it works when the PRNG is not
3882 seeded (in this case, the secret RSA exponent is abused as
3883 an unpredictable seed -- if it is not unpredictable, there
3884 is no point in blinding anyway). Make RSA blinding thread-safe
3885 by remembering the creator's thread ID in rsa->blinding and
3886 having all other threads use local one-time blinding factors
3887 (this requires more computation than sharing rsa->blinding, but
3888 avoids excessive locking; and if an RSA object is not shared
3889 between threads, blinding will still be very fast).
3892 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3894 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3895 via timing by performing a MAC computation even if incorrrect
3896 block cipher padding has been found. This is a countermeasure
3897 against active attacks where the attacker has to distinguish
3898 between bad padding and a MAC verification error. (CVE-2003-0078)
3900 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3901 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3902 Martin Vuagnoux (EPFL, Ilion)]
3904 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3906 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3907 memory from it's contents. This is done with a counter that will
3908 place alternating values in each byte. This can be used to solve
3909 two issues: 1) the removal of calls to memset() by highly optimizing
3910 compilers, and 2) cleansing with other values than 0, since those can
3911 be read through on certain media, for example a swap space on disk.
3914 *) Bugfix: client side session caching did not work with external caching,
3915 because the session->cipher setting was not restored when reloading
3916 from the external cache. This problem was masked, when
3917 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3918 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3921 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3922 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3923 [Zeev Lieber <zeev-l@yahoo.com>]
3925 *) Undo an undocumented change introduced in 0.9.6e which caused
3926 repeated calls to OpenSSL_add_all_ciphers() and
3927 OpenSSL_add_all_digests() to be ignored, even after calling
3931 *) Change the default configuration reader to deal with last line not
3932 being properly terminated.
3935 *) Change X509_NAME_cmp() so it applies the special rules on handling
3936 DN values that are of type PrintableString, as well as RDNs of type
3937 emailAddress where the value has the type ia5String.
3938 [stefank@valicert.com via Richard Levitte]
3940 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3941 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3942 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3943 the bitwise-OR of the two for use by the majority of applications
3944 wanting this behaviour, and update the docs. The documented
3945 behaviour and actual behaviour were inconsistent and had been
3946 changing anyway, so this is more a bug-fix than a behavioural
3948 [Geoff Thorpe, diagnosed by Nadav Har'El]
3950 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3951 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3954 *) Fix initialization code race conditions in
3955 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3956 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3957 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3958 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3959 ssl2_get_cipher_by_char(),
3960 ssl3_get_cipher_by_char().
3961 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3963 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3964 the cached sessions are flushed, as the remove_cb() might use ex_data
3965 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3966 (see [openssl.org #212]).
3967 [Geoff Thorpe, Lutz Jaenicke]
3969 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3970 length, instead of the encoding length to d2i_ASN1_OBJECT.
3973 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3975 *) [In 0.9.6g-engine release:]
3976 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3977 [Lynn Gazis <lgazis@rainbow.com>]
3979 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3981 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3982 and get fix the header length calculation.
3983 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3984 Alon Kantor <alonk@checkpoint.com> (and others),
3987 *) Use proper error handling instead of 'assertions' in buffer
3988 overflow checks added in 0.9.6e. This prevents DoS (the
3989 assertions could call abort()).
3990 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3992 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3994 *) Add various sanity checks to asn1_get_length() to reject
3995 the ASN1 length bytes if they exceed sizeof(long), will appear
3996 negative or the content length exceeds the length of the
3998 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4000 *) Fix cipher selection routines: ciphers without encryption had no flags
4001 for the cipher strength set and where therefore not handled correctly
4002 by the selection routines (PR #130).
4005 *) Fix EVP_dsa_sha macro.
4009 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4010 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4011 that was added in OpenSSL 0.9.6d.
4013 As the countermeasure turned out to be incompatible with some
4014 broken SSL implementations, the new option is part of SSL_OP_ALL.
4015 SSL_OP_ALL is usually employed when compatibility with weird SSL
4016 implementations is desired (e.g. '-bugs' option to 's_client' and
4017 's_server'), so the new option is automatically set in many
4021 *) Changes in security patch:
4023 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4024 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4025 Air Force Materiel Command, USAF, under agreement number
4028 *) Add various sanity checks to asn1_get_length() to reject
4029 the ASN1 length bytes if they exceed sizeof(long), will appear
4030 negative or the content length exceeds the length of the
4031 supplied buffer. (CVE-2002-0659)
4032 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4034 *) Assertions for various potential buffer overflows, not known to
4036 [Ben Laurie (CHATS)]
4038 *) Various temporary buffers to hold ASCII versions of integers were
4039 too small for 64 bit platforms. (CVE-2002-0655)
4040 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4042 *) Remote buffer overflow in SSL3 protocol - an attacker could
4043 supply an oversized session ID to a client. (CVE-2002-0656)
4044 [Ben Laurie (CHATS)]
4046 *) Remote buffer overflow in SSL2 protocol - an attacker could
4047 supply an oversized client master key. (CVE-2002-0656)
4048 [Ben Laurie (CHATS)]
4050 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4052 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4053 encoded as NULL) with id-dsa-with-sha1.
4054 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4056 *) Check various X509_...() return values in apps/req.c.
4057 [Nils Larsch <nla@trustcenter.de>]
4059 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4060 an end-of-file condition would erronously be flagged, when the CRLF
4061 was just at the end of a processed block. The bug was discovered when
4062 processing data through a buffering memory BIO handing the data to a
4063 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4064 <ptsekov@syntrex.com> and Nedelcho Stanev.
4067 *) Implement a countermeasure against a vulnerability recently found
4068 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4069 before application data chunks to avoid the use of known IVs
4070 with data potentially chosen by the attacker.
4073 *) Fix length checks in ssl3_get_client_hello().
4076 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4077 to prevent ssl3_read_internal() from incorrectly assuming that
4078 ssl3_read_bytes() found application data while handshake
4079 processing was enabled when in fact s->s3->in_read_app_data was
4080 merely automatically cleared during the initial handshake.
4081 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4083 *) Fix object definitions for Private and Enterprise: they were not
4084 recognized in their shortname (=lowercase) representation. Extend
4085 obj_dat.pl to issue an error when using undefined keywords instead
4086 of silently ignoring the problem (Svenning Sorensen
4087 <sss@sss.dnsalias.net>).
4090 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4091 generators, i.e. generators other than 2 and 5. (Previously, the
4092 code did not properly initialise the 'add' and 'rem' values to
4093 BN_generate_prime().)
4095 In the new general case, we do not insist that 'generator' is
4096 actually a primitive root: This requirement is rather pointless;
4097 a generator of the order-q subgroup is just as good, if not
4101 *) Map new X509 verification errors to alerts. Discovered and submitted by
4102 Tom Wu <tom@arcot.com>.
4105 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4106 returning non-zero before the data&nb
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