5 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
7 *) Disable renegotiation completely - this fixes a severe security
8 problem (CVE-2009-3555) at the cost of breaking all
9 renegotiation. Renegotiation can be re-enabled by setting
10 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
11 run-time. This is really not recommended unless you know what
15 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
17 *) Don't set val to NULL when freeing up structures, it is freed up by
18 underlying code. If sizeof(void *) > sizeof(long) this can result in
19 zeroing past the valid field. (CVE-2009-0789)
20 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
22 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
23 checked correctly. This would allow some invalid signed attributes to
24 appear to verify correctly. (CVE-2009-0591)
25 [Ivan Nestlerode <inestlerode@us.ibm.com>]
27 *) Reject UniversalString and BMPString types with invalid lengths. This
28 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
29 a legal length. (CVE-2009-0590)
32 *) Set S/MIME signing as the default purpose rather than setting it
33 unconditionally. This allows applications to override it at the store
37 *) Permit restricted recursion of ASN1 strings. This is needed in practice
38 to handle some structures.
41 *) Improve efficiency of mem_gets: don't search whole buffer each time
43 [Jeremy Shapiro <jnshapir@us.ibm.com>]
45 *) New -hex option for openssl rand.
48 *) Print out UTF8String and NumericString when parsing ASN1.
51 *) Support NumericString type for name components.
54 *) Allow CC in the environment to override the automatically chosen
55 compiler. Note that nothing is done to ensure flags work with the
59 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
61 *) Properly check EVP_VerifyFinal() and similar return values
63 [Ben Laurie, Bodo Moeller, Google Security Team]
65 *) Enable TLS extensions by default.
68 *) Allow the CHIL engine to be loaded, whether the application is
69 multithreaded or not. (This does not release the developer from the
70 obligation to set up the dynamic locking callbacks.)
71 [Sander Temme <sander@temme.net>]
73 *) Use correct exit code if there is an error in dgst command.
74 [Steve Henson; problem pointed out by Roland Dirlewanger]
76 *) Tweak Configure so that you need to say "experimental-jpake" to enable
77 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
80 *) Add experimental JPAKE support, including demo authentication in
81 s_client and s_server.
84 *) Set the comparison function in v3_addr_canonize().
85 [Rob Austein <sra@hactrn.net>]
87 *) Add support for XMPP STARTTLS in s_client.
88 [Philip Paeps <philip@freebsd.org>]
90 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
91 to ensure that even with this option, only ciphersuites in the
92 server's preference list will be accepted. (Note that the option
93 applies only when resuming a session, so the earlier behavior was
94 just about the algorithm choice for symmetric cryptography.)
97 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
99 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
100 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
103 *) The fix in 0.9.8c that supposedly got rid of unsafe
104 double-checked locking was incomplete for RSA blinding,
105 addressing just one layer of what turns out to have been
106 doubly unsafe triple-checked locking.
108 So now fix this for real by retiring the MONT_HELPER macro
109 in crypto/rsa/rsa_eay.c.
111 [Bodo Moeller; problem pointed out by Marius Schilder]
113 *) Various precautionary measures:
115 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
117 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
118 (NB: This would require knowledge of the secret session ticket key
119 to exploit, in which case you'd be SOL either way.)
121 - Change bn_nist.c so that it will properly handle input BIGNUMs
122 outside the expected range.
124 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
127 [Neel Mehta, Bodo Moeller]
129 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
130 the load fails. Useful for distros.
131 [Ben Laurie and the FreeBSD team]
133 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
136 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
139 *) Expand ENGINE to support engine supplied SSL client certificate functions.
141 This work was sponsored by Logica.
144 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
145 keystores. Support for SSL/TLS client authentication too.
146 Not compiled unless enable-capieng specified to Configure.
148 This work was sponsored by Logica.
151 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
152 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
153 attribute creation routines such as certifcate requests and PKCS#12
157 Changes between 0.9.8g and 0.9.8h [28 May 2008]
159 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
160 handshake which could lead to a cilent crash as found using the
161 Codenomicon TLS test suite (CVE-2008-1672)
162 [Steve Henson, Mark Cox]
164 *) Fix double free in TLS server name extensions which could lead to
165 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
168 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
170 Clear the error queue to ensure that error entries left from
171 older function calls do not interfere with the correct operation.
172 [Lutz Jaenicke, Erik de Castro Lopo]
174 *) Remove root CA certificates of commercial CAs:
176 The OpenSSL project does not recommend any specific CA and does not
177 have any policy with respect to including or excluding any CA.
178 Therefore it does not make any sense to ship an arbitrary selection
179 of root CA certificates with the OpenSSL software.
182 *) RSA OAEP patches to fix two separate invalid memory reads.
183 The first one involves inputs when 'lzero' is greater than
184 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
185 before the beginning of from). The second one involves inputs where
186 the 'db' section contains nothing but zeroes (there is a one-byte
187 invalid read after the end of 'db').
188 [Ivan Nestlerode <inestlerode@us.ibm.com>]
190 *) Partial backport from 0.9.9-dev:
192 Introduce bn_mul_mont (dedicated Montgomery multiplication
193 procedure) as a candidate for BIGNUM assembler implementation.
194 While 0.9.9-dev uses assembler for various architectures, only
195 x86_64 is available by default here in the 0.9.8 branch, and
196 32-bit x86 is available through a compile-time setting.
198 To try the 32-bit x86 assembler implementation, use Configure
199 option "enable-montasm" (which exists only for this backport).
201 As "enable-montasm" for 32-bit x86 disclaims code stability
202 anyway, in this constellation we activate additional code
203 backported from 0.9.9-dev for further performance improvements,
204 namely BN_from_montgomery_word. (To enable this otherwise,
205 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
207 [Andy Polyakov (backport partially by Bodo Moeller)]
209 *) Add TLS session ticket callback. This allows an application to set
210 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
211 values. This is useful for key rollover for example where several key
212 sets may exist with different names.
215 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
216 This was broken until now in 0.9.8 releases, such that the only way
217 a registered ENGINE could be used (assuming it initialises
218 successfully on the host) was to explicitly set it as the default
219 for the relevant algorithms. This is in contradiction with 0.9.7
220 behaviour and the documentation. With this fix, when an ENGINE is
221 registered into a given algorithm's table of implementations, the
222 'uptodate' flag is reset so that auto-discovery will be used next
223 time a new context for that algorithm attempts to select an
225 [Ian Lister (tweaked by Geoff Thorpe)]
227 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
228 implemention in the following ways:
230 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
233 Lack of BER streaming support means one pass streaming processing is
234 only supported if data is detached: setting the streaming flag is
235 ignored for embedded content.
237 CMS support is disabled by default and must be explicitly enabled
238 with the enable-cms configuration option.
241 *) Update the GMP engine glue to do direct copies between BIGNUM and
242 mpz_t when openssl and GMP use the same limb size. Otherwise the
243 existing "conversion via a text string export" trick is still used.
244 [Paul Sheer <paulsheer@gmail.com>]
246 *) Zlib compression BIO. This is a filter BIO which compressed and
247 uncompresses any data passed through it.
250 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
251 RFC3394 compatible AES key wrapping.
254 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
255 sets string data without copying. X509_ALGOR_set0() and
256 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
257 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
258 from an X509_ATTRIBUTE structure optionally checking it occurs only
259 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
263 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
264 to get the expected BN_FLG_CONSTTIME behavior.
265 [Bodo Moeller (Google)]
269 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
270 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
271 - added some more tests to do_tests.pl
272 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
273 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
274 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
275 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
276 - various changes to netware.pl to enable gcc-cross builds on Win32
278 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
279 - various changes to fix missing prototype warnings
280 - fixed x86nasm.pl to create correct asm files for NASM COFF output
281 - added AES, WHIRLPOOL and CPUID assembler code to build files
282 - added missing AES assembler make rules to mk1mf.pl
283 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
284 [Guenter Knauf <eflash@gmx.net>]
286 *) Implement certificate status request TLS extension defined in RFC3546.
287 A client can set the appropriate parameters and receive the encoded
288 OCSP response via a callback. A server can query the supplied parameters
289 and set the encoded OCSP response in the callback. Add simplified examples
290 to s_client and s_server.
293 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
296 + Binary incompatibility of ssl_ctx_st structure
297 + DTLS interoperation with non-compliant servers
298 + Don't call get_session_cb() without proposed session
299 + Fix ia64 assembler code
300 [Andy Polyakov, Steve Henson]
302 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
304 *) DTLS Handshake overhaul. There were longstanding issues with
305 OpenSSL DTLS implementation, which were making it impossible for
306 RFC 4347 compliant client to communicate with OpenSSL server.
307 Unfortunately just fixing these incompatibilities would "cut off"
308 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
309 server keeps tolerating non RFC compliant syntax. The opposite is
310 not true, 0.9.8f client can not communicate with earlier server.
311 This update even addresses CVE-2007-4995.
314 *) Changes to avoid need for function casts in OpenSSL: some compilers
315 (gcc 4.2 and later) reject their use.
316 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
319 *) Add RFC4507 support to OpenSSL. This includes the corrections in
320 RFC4507bis. The encrypted ticket format is an encrypted encoded
321 SSL_SESSION structure, that way new session features are automatically
324 If a client application caches session in an SSL_SESSION structure
325 support is transparent because tickets are now stored in the encoded
328 The SSL_CTX structure automatically generates keys for ticket
329 protection in servers so again support should be possible
330 with no application modification.
332 If a client or server wishes to disable RFC4507 support then the option
333 SSL_OP_NO_TICKET can be set.
335 Add a TLS extension debugging callback to allow the contents of any client
336 or server extensions to be examined.
338 This work was sponsored by Google.
341 *) Add initial support for TLS extensions, specifically for the server_name
342 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
343 have new members for a host name. The SSL data structure has an
344 additional member SSL_CTX *initial_ctx so that new sessions can be
345 stored in that context to allow for session resumption, even after the
346 SSL has been switched to a new SSL_CTX in reaction to a client's
347 server_name extension.
349 New functions (subject to change):
352 SSL_get_servername_type()
355 New CTRL codes and macros (subject to change):
357 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
358 - SSL_CTX_set_tlsext_servername_callback()
359 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
360 - SSL_CTX_set_tlsext_servername_arg()
361 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
363 openssl s_client has a new '-servername ...' option.
365 openssl s_server has new options '-servername_host ...', '-cert2 ...',
366 '-key2 ...', '-servername_fatal' (subject to change). This allows
367 testing the HostName extension for a specific single host name ('-cert'
368 and '-key' remain fallbacks for handshakes without HostName
369 negotiation). If the unrecogninzed_name alert has to be sent, this by
370 default is a warning; it becomes fatal with the '-servername_fatal'
373 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
375 *) Add AES and SSE2 assembly language support to VC++ build.
378 *) Mitigate attack on final subtraction in Montgomery reduction.
381 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
382 (which previously caused an internal error).
385 *) Squeeze another 10% out of IGE mode when in != out.
388 *) AES IGE mode speedup.
389 [Dean Gaudet (Google)]
391 *) Add the Korean symmetric 128-bit cipher SEED (see
392 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
393 add SEED ciphersuites from RFC 4162:
395 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
396 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
397 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
398 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
400 To minimize changes between patchlevels in the OpenSSL 0.9.8
401 series, SEED remains excluded from compilation unless OpenSSL
402 is configured with 'enable-seed'.
405 *) Mitigate branch prediction attacks, which can be practical if a
406 single processor is shared, allowing a spy process to extract
407 information. For detailed background information, see
408 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
409 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
410 and Necessary Software Countermeasures"). The core of the change
411 are new versions BN_div_no_branch() and
412 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
413 respectively, which are slower, but avoid the security-relevant
414 conditional branches. These are automatically called by BN_div()
415 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
416 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
417 remove a conditional branch.
419 BN_FLG_CONSTTIME is the new name for the previous
420 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
421 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
422 in the exponent causes BN_mod_exp_mont() to use the alternative
423 implementation in BN_mod_exp_mont_consttime().) The old name
424 remains as a deprecated alias.
426 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
427 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
428 constant-time implementations for more than just exponentiation.
429 Here too the old name is kept as a deprecated alias.
431 BN_BLINDING_new() will now use BN_dup() for the modulus so that
432 the BN_BLINDING structure gets an independent copy of the
433 modulus. This means that the previous "BIGNUM *m" argument to
434 BN_BLINDING_new() and to BN_BLINDING_create_param() now
435 essentially becomes "const BIGNUM *m", although we can't actually
436 change this in the header file before 0.9.9. It allows
437 RSA_setup_blinding() to use BN_with_flags() on the modulus to
438 enable BN_FLG_CONSTTIME.
440 [Matthew D Wood (Intel Corp)]
442 *) In the SSL/TLS server implementation, be strict about session ID
443 context matching (which matters if an application uses a single
444 external cache for different purposes). Previously,
445 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
446 set. This did ensure strict client verification, but meant that,
447 with applications using a single external cache for quite
448 different requirements, clients could circumvent ciphersuite
449 restrictions for a given session ID context by starting a session
450 in a different context.
453 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
454 a ciphersuite string such as "DEFAULT:RSA" cannot enable
455 authentication-only ciphersuites.
458 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
459 not complete and could lead to a possible single byte overflow
460 (CVE-2007-5135) [Ben Laurie]
462 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
464 *) Since AES128 and AES256 (and similarly Camellia128 and
465 Camellia256) share a single mask bit in the logic of
466 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
467 kludge to work properly if AES128 is available and AES256 isn't
468 (or if Camellia128 is available and Camellia256 isn't).
471 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
472 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
473 When a point or a seed is encoded in a BIT STRING, we need to
474 prevent the removal of trailing zero bits to get the proper DER
475 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
476 of a NamedBitList, for which trailing 0 bits need to be removed.)
479 *) Have SSL/TLS server implementation tolerate "mismatched" record
480 protocol version while receiving ClientHello even if the
481 ClientHello is fragmented. (The server can't insist on the
482 particular protocol version it has chosen before the ServerHello
483 message has informed the client about his choice.)
486 *) Add RFC 3779 support.
487 [Rob Austein for ARIN, Ben Laurie]
489 *) Load error codes if they are not already present instead of using a
490 static variable. This allows them to be cleanly unloaded and reloaded.
491 Improve header file function name parsing.
494 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
495 or CAPABILITY handshake as required by RFCs.
498 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
500 *) Introduce limits to prevent malicious keys being able to
501 cause a denial of service. (CVE-2006-2940)
502 [Steve Henson, Bodo Moeller]
504 *) Fix ASN.1 parsing of certain invalid structures that can result
505 in a denial of service. (CVE-2006-2937) [Steve Henson]
507 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
508 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
510 *) Fix SSL client code which could crash if connecting to a
511 malicious SSLv2 server. (CVE-2006-4343)
512 [Tavis Ormandy and Will Drewry, Google Security Team]
514 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
515 match only those. Before that, "AES256-SHA" would be interpreted
516 as a pattern and match "AES128-SHA" too (since AES128-SHA got
517 the same strength classification in 0.9.7h) as we currently only
518 have a single AES bit in the ciphersuite description bitmap.
519 That change, however, also applied to ciphersuite strings such as
520 "RC4-MD5" that intentionally matched multiple ciphersuites --
521 namely, SSL 2.0 ciphersuites in addition to the more common ones
522 from SSL 3.0/TLS 1.0.
524 So we change the selection algorithm again: Naming an explicit
525 ciphersuite selects this one ciphersuite, and any other similar
526 ciphersuite (same bitmap) from *other* protocol versions.
527 Thus, "RC4-MD5" again will properly select both the SSL 2.0
528 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
530 Since SSL 2.0 does not have any ciphersuites for which the
531 128/256 bit distinction would be relevant, this works for now.
532 The proper fix will be to use different bits for AES128 and
533 AES256, which would have avoided the problems from the beginning;
534 however, bits are scarce, so we can only do this in a new release
535 (not just a patchlevel) when we can change the SSL_CIPHER
536 definition to split the single 'unsigned long mask' bitmap into
537 multiple values to extend the available space.
541 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
543 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
544 (CVE-2006-4339) [Ben Laurie and Google Security Team]
546 *) Add AES IGE and biIGE modes.
549 *) Change the Unix randomness entropy gathering to use poll() when
550 possible instead of select(), since the latter has some
551 undesirable limitations.
552 [Darryl Miles via Richard Levitte and Bodo Moeller]
554 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
555 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
556 cannot be implicitly activated as part of, e.g., the "AES" alias.
557 However, please upgrade to OpenSSL 0.9.9[-dev] for
558 non-experimental use of the ECC ciphersuites to get TLS extension
559 support, which is required for curve and point format negotiation
560 to avoid potential handshake problems.
563 *) Disable rogue ciphersuites:
565 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
566 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
567 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
569 The latter two were purportedly from
570 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
573 Also deactivate the remaining ciphersuites from
574 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
575 unofficial, and the ID has long expired.
578 *) Fix RSA blinding Heisenbug (problems sometimes occured on
579 dual-core machines) and other potential thread-safety issues.
582 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
583 versions), which is now available for royalty-free use
584 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
585 Also, add Camellia TLS ciphersuites from RFC 4132.
587 To minimize changes between patchlevels in the OpenSSL 0.9.8
588 series, Camellia remains excluded from compilation unless OpenSSL
589 is configured with 'enable-camellia'.
592 *) Disable the padding bug check when compression is in use. The padding
593 bug check assumes the first packet is of even length, this is not
594 necessarily true if compresssion is enabled and can result in false
595 positives causing handshake failure. The actual bug test is ancient
596 code so it is hoped that implementations will either have fixed it by
597 now or any which still have the bug do not support compression.
600 Changes between 0.9.8a and 0.9.8b [04 May 2006]
602 *) When applying a cipher rule check to see if string match is an explicit
603 cipher suite and only match that one cipher suite if it is.
606 *) Link in manifests for VC++ if needed.
607 [Austin Ziegler <halostatue@gmail.com>]
609 *) Update support for ECC-based TLS ciphersuites according to
610 draft-ietf-tls-ecc-12.txt with proposed changes (but without
611 TLS extensions, which are supported starting with the 0.9.9
612 branch, not in the OpenSSL 0.9.8 branch).
615 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
616 opaque EVP_CIPHER_CTX handling.
619 *) Fixes and enhancements to zlib compression code. We now only use
620 "zlib1.dll" and use the default __cdecl calling convention on Win32
621 to conform with the standards mentioned here:
622 http://www.zlib.net/DLL_FAQ.txt
623 Static zlib linking now works on Windows and the new --with-zlib-include
624 --with-zlib-lib options to Configure can be used to supply the location
625 of the headers and library. Gracefully handle case where zlib library
629 *) Several fixes and enhancements to the OID generation code. The old code
630 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
631 handle numbers larger than ULONG_MAX, truncated printing and had a
632 non standard OBJ_obj2txt() behaviour.
635 *) Add support for building of engines under engine/ as shared libraries
636 under VC++ build system.
639 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
640 Hopefully, we will not see any false combination of paths any more.
643 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
645 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
646 (part of SSL_OP_ALL). This option used to disable the
647 countermeasure against man-in-the-middle protocol-version
648 rollback in the SSL 2.0 server implementation, which is a bad
649 idea. (CVE-2005-2969)
651 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
652 for Information Security, National Institute of Advanced Industrial
653 Science and Technology [AIST], Japan)]
655 *) Add two function to clear and return the verify parameter flags.
658 *) Keep cipherlists sorted in the source instead of sorting them at
659 runtime, thus removing the need for a lock.
662 *) Avoid some small subgroup attacks in Diffie-Hellman.
663 [Nick Mathewson and Ben Laurie]
665 *) Add functions for well-known primes.
668 *) Extended Windows CE support.
669 [Satoshi Nakamura and Andy Polyakov]
671 *) Initialize SSL_METHOD structures at compile time instead of during
672 runtime, thus removing the need for a lock.
675 *) Make PKCS7_decrypt() work even if no certificate is supplied by
676 attempting to decrypt each encrypted key in turn. Add support to
680 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
682 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
685 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
688 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
689 key into the same file any more.
692 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
695 *) Add -utf8 command line and config file option to 'ca'.
696 [Stefan <stf@udoma.org]
698 *) Removed the macro des_crypt(), as it seems to conflict with some
699 libraries. Use DES_crypt().
702 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
703 involves renaming the source and generated shared-libs for
704 both. The engines will accept the corrected or legacy ids
705 ('ncipher' and '4758_cca' respectively) when binding. NB,
706 this only applies when building 'shared'.
707 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
709 *) Add attribute functions to EVP_PKEY structure. Modify
710 PKCS12_create() to recognize a CSP name attribute and
711 use it. Make -CSP option work again in pkcs12 utility.
714 *) Add new functionality to the bn blinding code:
715 - automatic re-creation of the BN_BLINDING parameters after
716 a fixed number of uses (currently 32)
717 - add new function for parameter creation
718 - introduce flags to control the update behaviour of the
719 BN_BLINDING parameters
720 - hide BN_BLINDING structure
721 Add a second BN_BLINDING slot to the RSA structure to improve
722 performance when a single RSA object is shared among several
726 *) Add support for DTLS.
727 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
729 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
730 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
733 *) Remove buggy and incompletet DH cert support from
734 ssl/ssl_rsa.c and ssl/s3_both.c
737 *) Use SHA-1 instead of MD5 as the default digest algorithm for
738 the apps/openssl applications.
741 *) Compile clean with "-Wall -Wmissing-prototypes
742 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
743 DEBUG_SAFESTACK must also be set.
746 *) Change ./Configure so that certain algorithms can be disabled by default.
747 The new counterpiece to "no-xxx" is "enable-xxx".
749 The patented RC5 and MDC2 algorithms will now be disabled unless
750 "enable-rc5" and "enable-mdc2", respectively, are specified.
752 (IDEA remains enabled despite being patented. This is because IDEA
753 is frequently required for interoperability, and there is no license
754 fee for non-commercial use. As before, "no-idea" can be used to
755 avoid this algorithm.)
759 *) Add processing of proxy certificates (see RFC 3820). This work was
760 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
761 EGEE (Enabling Grids for E-science in Europe).
764 *) RC4 performance overhaul on modern architectures/implementations, such
765 as Intel P4, IA-64 and AMD64.
768 *) New utility extract-section.pl. This can be used specify an alternative
769 section number in a pod file instead of having to treat each file as
770 a separate case in Makefile. This can be done by adding two lines to the
773 =for comment openssl_section:XXX
775 The blank line is mandatory.
779 *) New arguments -certform, -keyform and -pass for s_client and s_server
780 to allow alternative format key and certificate files and passphrase
784 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
785 update associated structures and add various utility functions.
787 Add new policy related verify parameters, include policy checking in
788 standard verify code. Enhance 'smime' application with extra parameters
789 to support policy checking and print out.
792 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
793 Nehemiah processors. These extensions support AES encryption in hardware
794 as well as RNG (though RNG support is currently disabled).
795 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
797 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
800 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
801 [Andy Polyakov and a number of other people]
803 *) Improved PowerPC platform support. Most notably BIGNUM assembler
804 implementation contributed by IBM.
805 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
807 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
808 exponent rather than 'unsigned long'. There is a corresponding change to
809 the new 'rsa_keygen' element of the RSA_METHOD structure.
810 [Jelte Jansen, Geoff Thorpe]
812 *) Functionality for creating the initial serial number file is now
813 moved from CA.pl to the 'ca' utility with a new option -create_serial.
815 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
816 number file to 1, which is bound to cause problems. To avoid
817 the problems while respecting compatibility between different 0.9.7
818 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
819 CA.pl for serial number initialization. With the new release 0.9.8,
820 we can fix the problem directly in the 'ca' utility.)
823 *) Reduced header interdepencies by declaring more opaque objects in
824 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
825 give fewer recursive includes, which could break lazy source code - so
826 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
827 developers should define this symbol when building and using openssl to
828 ensure they track the recommended behaviour, interfaces, [etc], but
829 backwards-compatible behaviour prevails when this isn't defined.
832 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
835 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
836 This will generate a random key of the appropriate length based on the
837 cipher context. The EVP_CIPHER can provide its own random key generation
838 routine to support keys of a specific form. This is used in the des and
839 3des routines to generate a key of the correct parity. Update S/MIME
840 code to use new functions and hence generate correct parity DES keys.
841 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
842 valid (weak or incorrect parity).
845 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
846 as looking them up. This is useful when the verified structure may contain
847 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
848 present unless the new PKCS7_NO_CRL flag is asserted.
851 *) Extend ASN1 oid configuration module. It now additionally accepts the
854 shortName = some long name, 1.2.3.4
857 *) Reimplemented the BN_CTX implementation. There is now no more static
858 limitation on the number of variables it can handle nor the depth of the
859 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
860 information can now expand as required, and rather than having a single
861 static array of bignums, BN_CTX now uses a linked-list of such arrays
862 allowing it to expand on demand whilst maintaining the usefulness of
866 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
867 to allow all RSA operations to function using a single BN_CTX.
870 *) Preliminary support for certificate policy evaluation and checking. This
871 is initially intended to pass the tests outlined in "Conformance Testing
872 of Relying Party Client Certificate Path Processing Logic" v1.07.
875 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
876 remained unused and not that useful. A variety of other little bignum
877 tweaks and fixes have also been made continuing on from the audit (see
881 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
882 associated ASN1, EVP and SSL functions and old ASN1 macros.
885 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
886 and this should never fail. So the return value from the use of
887 BN_set_word() (which can fail due to needless expansion) is now deprecated;
888 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
891 *) BN_CTX_get() should return zero-valued bignums, providing the same
892 initialised value as BN_new().
893 [Geoff Thorpe, suggested by Ulf Möller]
895 *) Support for inhibitAnyPolicy certificate extension.
898 *) An audit of the BIGNUM code is underway, for which debugging code is
899 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
900 is considered valid when processing BIGNUMs, and causes execution to
901 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
902 further steps are taken to deliberately pollute unused data in BIGNUM
903 structures to try and expose faulty code further on. For now, openssl will
904 (in its default mode of operation) continue to tolerate the inconsistent
905 forms that it has tolerated in the past, but authors and packagers should
906 consider trying openssl and their own applications when compiled with
907 these debugging symbols defined. It will help highlight potential bugs in
908 their own code, and will improve the test coverage for OpenSSL itself. At
909 some point, these tighter rules will become openssl's default to improve
910 maintainability, though the assert()s and other overheads will remain only
911 in debugging configurations. See bn.h for more details.
912 [Geoff Thorpe, Nils Larsch, Ulf Möller]
914 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
915 that can only be obtained through BN_CTX_new() (which implicitly
916 initialises it). The presence of this function only made it possible
917 to overwrite an existing structure (and cause memory leaks).
920 *) Because of the callback-based approach for implementing LHASH as a
921 template type, lh_insert() adds opaque objects to hash-tables and
922 lh_doall() or lh_doall_arg() are typically used with a destructor callback
923 to clean up those corresponding objects before destroying the hash table
924 (and losing the object pointers). So some over-zealous constifications in
925 LHASH have been relaxed so that lh_insert() does not take (nor store) the
926 objects as "const" and the lh_doall[_arg] callback wrappers are not
927 prototyped to have "const" restrictions on the object pointers they are
928 given (and so aren't required to cast them away any more).
931 *) The tmdiff.h API was so ugly and minimal that our own timing utility
932 (speed) prefers to use its own implementation. The two implementations
933 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
934 its object type properly exposed (MS_TM) instead of casting to/from "char
935 *". This may still change yet if someone realises MS_TM and "ms_time_***"
936 aren't necessarily the greatest nomenclatures - but this is what was used
937 internally to the implementation so I've used that for now.
940 *) Ensure that deprecated functions do not get compiled when
941 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
942 the self-tests were still using deprecated key-generation functions so
943 these have been updated also.
946 *) Reorganise PKCS#7 code to separate the digest location functionality
947 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
948 New function PKCS7_set_digest() to set the digest type for PKCS#7
949 digestedData type. Add additional code to correctly generate the
950 digestedData type and add support for this type in PKCS7 initialization
954 *) New function PKCS7_set0_type_other() this initializes a PKCS7
955 structure of type "other".
958 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
959 sure the loop does correctly stop and breaking ("division by zero")
960 modulus operations are not performed. The (pre-generated) prime
961 table crypto/bn/bn_prime.h was already correct, but it could not be
962 re-generated on some platforms because of the "division by zero"
963 situation in the script.
964 [Ralf S. Engelschall]
966 *) Update support for ECC-based TLS ciphersuites according to
967 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
968 SHA-1 now is only used for "small" curves (where the
969 representation of a field element takes up to 24 bytes); for
970 larger curves, the field element resulting from ECDH is directly
971 used as premaster secret.
972 [Douglas Stebila (Sun Microsystems Laboratories)]
974 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
975 curve secp160r1 to the tests.
976 [Douglas Stebila (Sun Microsystems Laboratories)]
978 *) Add the possibility to load symbols globally with DSO.
979 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
981 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
982 control of the error stack.
985 *) Add support for STORE in ENGINE.
988 *) Add the STORE type. The intention is to provide a common interface
989 to certificate and key stores, be they simple file-based stores, or
990 HSM-type store, or LDAP stores, or...
991 NOTE: The code is currently UNTESTED and isn't really used anywhere.
994 *) Add a generic structure called OPENSSL_ITEM. This can be used to
995 pass a list of arguments to any function as well as provide a way
996 for a function to pass data back to the caller.
999 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1000 works like BUF_strdup() but can be used to duplicate a portion of
1001 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1005 *) Add the function sk_find_ex() which works like sk_find(), but will
1006 return an index to an element even if an exact match couldn't be
1007 found. The index is guaranteed to point at the element where the
1008 searched-for key would be inserted to preserve sorting order.
1011 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1012 takes an extra flags argument for optional functionality. Currently,
1013 the following flags are defined:
1015 OBJ_BSEARCH_VALUE_ON_NOMATCH
1016 This one gets OBJ_bsearch_ex() to return a pointer to the first
1017 element where the comparing function returns a negative or zero
1020 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1021 This one gets OBJ_bsearch_ex() to return a pointer to the first
1022 element where the comparing function returns zero. This is useful
1023 if there are more than one element where the comparing function
1027 *) Make it possible to create self-signed certificates with 'openssl ca'
1028 in such a way that the self-signed certificate becomes part of the
1029 CA database and uses the same mechanisms for serial number generation
1030 as all other certificate signing. The new flag '-selfsign' enables
1031 this functionality. Adapt CA.sh and CA.pl.in.
1034 *) Add functionality to check the public key of a certificate request
1035 against a given private. This is useful to check that a certificate
1036 request can be signed by that key (self-signing).
1039 *) Make it possible to have multiple active certificates with the same
1040 subject in the CA index file. This is done only if the keyword
1041 'unique_subject' is set to 'no' in the main CA section (default
1042 if 'CA_default') of the configuration file. The value is saved
1043 with the database itself in a separate index attribute file,
1044 named like the index file with '.attr' appended to the name.
1047 *) Generate muti valued AVAs using '+' notation in config files for
1051 *) Support for nameConstraints certificate extension.
1054 *) Support for policyConstraints certificate extension.
1057 *) Support for policyMappings certificate extension.
1060 *) Make sure the default DSA_METHOD implementation only uses its
1061 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1062 and change its own handlers to be NULL so as to remove unnecessary
1063 indirection. This lets alternative implementations fallback to the
1064 default implementation more easily.
1067 *) Support for directoryName in GeneralName related extensions
1071 *) Make it possible to link applications using Makefile.shared.
1072 Make that possible even when linking against static libraries!
1075 *) Support for single pass processing for S/MIME signing. This now
1076 means that S/MIME signing can be done from a pipe, in addition
1077 cleartext signing (multipart/signed type) is effectively streaming
1078 and the signed data does not need to be all held in memory.
1080 This is done with a new flag PKCS7_STREAM. When this flag is set
1081 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1082 is done after the data is output (and digests calculated) in
1083 SMIME_write_PKCS7().
1086 *) Add full support for -rpath/-R, both in shared libraries and
1087 applications, at least on the platforms where it's known how
1091 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1092 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1093 will now compute a table of multiples of the generator that
1094 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1095 faster (notably in the case of a single point multiplication,
1096 scalar * generator).
1097 [Nils Larsch, Bodo Moeller]
1099 *) IPv6 support for certificate extensions. The various extensions
1100 which use the IP:a.b.c.d can now take IPv6 addresses using the
1101 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1105 *) Added an ENGINE that implements RSA by performing private key
1106 exponentiations with the GMP library. The conversions to and from
1107 GMP's mpz_t format aren't optimised nor are any montgomery forms
1108 cached, and on x86 it appears OpenSSL's own performance has caught up.
1109 However there are likely to be other architectures where GMP could
1110 provide a boost. This ENGINE is not built in by default, but it can be
1111 specified at Configure time and should be accompanied by the necessary
1112 linker additions, eg;
1113 ./config -DOPENSSL_USE_GMP -lgmp
1116 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1117 testing availability of engines with "-t" - the old behaviour is
1118 produced by increasing the feature's verbosity with "-tt".
1121 *) ECDSA routines: under certain error conditions uninitialized BN objects
1122 could be freed. Solution: make sure initialization is performed early
1123 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1127 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1128 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1129 software implementations. For DSA and DH, parameter generation can
1130 also be overriden by providing the appropriate method callbacks.
1133 *) Change the "progress" mechanism used in key-generation and
1134 primality testing to functions that take a new BN_GENCB pointer in
1135 place of callback/argument pairs. The new API functions have "_ex"
1136 postfixes and the older functions are reimplemented as wrappers for
1137 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1138 declarations of the old functions to help (graceful) attempts to
1139 migrate to the new functions. Also, the new key-generation API
1140 functions operate on a caller-supplied key-structure and return
1141 success/failure rather than returning a key or NULL - this is to
1142 help make "keygen" another member function of RSA_METHOD etc.
1144 Example for using the new callback interface:
1146 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1150 BN_GENCB_set(&my_cb, my_callback, my_arg);
1152 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1153 /* For the meaning of a, b in calls to my_callback(), see the
1154 * documentation of the function that calls the callback.
1155 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1156 * my_callback should return 1 if it wants BN_is_prime_ex()
1157 * to continue, or 0 to stop.
1162 *) Change the ZLIB compression method to be stateful, and make it
1163 available to TLS with the number defined in
1164 draft-ietf-tls-compression-04.txt.
1167 *) Add the ASN.1 structures and functions for CertificatePair, which
1168 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1170 CertificatePair ::= SEQUENCE {
1171 forward [0] Certificate OPTIONAL,
1172 reverse [1] Certificate OPTIONAL,
1173 -- at least one of the pair shall be present -- }
1175 Also implement the PEM functions to read and write certificate
1176 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1178 This needed to be defined, mostly for the sake of the LDAP
1179 attribute crossCertificatePair, but may prove useful elsewhere as
1183 *) Make it possible to inhibit symlinking of shared libraries in
1184 Makefile.shared, for Cygwin's sake.
1187 *) Extend the BIGNUM API by creating a function
1188 void BN_set_negative(BIGNUM *a, int neg);
1189 and a macro that behave like
1190 int BN_is_negative(const BIGNUM *a);
1192 to avoid the need to access 'a->neg' directly in applications.
1195 *) Implement fast modular reduction for pseudo-Mersenne primes
1196 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1197 EC_GROUP_new_curve_GFp() will now automatically use this
1199 [Nils Larsch <nla@trustcenter.de>]
1201 *) Add new lock type (CRYPTO_LOCK_BN).
1204 *) Change the ENGINE framework to automatically load engines
1205 dynamically from specific directories unless they could be
1206 found to already be built in or loaded. Move all the
1207 current engines except for the cryptodev one to a new
1209 The engines in engines/ are built as shared libraries if
1210 the "shared" options was given to ./Configure or ./config.
1211 Otherwise, they are inserted in libcrypto.a.
1212 /usr/local/ssl/engines is the default directory for dynamic
1213 engines, but that can be overriden at configure time through
1214 the usual use of --prefix and/or --openssldir, and at run
1215 time with the environment variable OPENSSL_ENGINES.
1216 [Geoff Thorpe and Richard Levitte]
1218 *) Add Makefile.shared, a helper makefile to build shared
1219 libraries. Addapt Makefile.org.
1222 *) Add version info to Win32 DLLs.
1223 [Peter 'Luna' Runestig" <peter@runestig.com>]
1225 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1226 can be added using this API to created arbitrary PKCS#12
1227 files while avoiding the low level API.
1229 New options to PKCS12_create(), key or cert can be NULL and
1230 will then be omitted from the output file. The encryption
1231 algorithm NIDs can be set to -1 for no encryption, the mac
1232 iteration count can be set to 0 to omit the mac.
1234 Enhance pkcs12 utility by making the -nokeys and -nocerts
1235 options work when creating a PKCS#12 file. New option -nomac
1236 to omit the mac, NONE can be set for an encryption algorithm.
1237 New code is modified to use the enhanced PKCS12_create()
1238 instead of the low level API.
1241 *) Extend ASN1 encoder to support indefinite length constructed
1242 encoding. This can output sequences tags and octet strings in
1243 this form. Modify pk7_asn1.c to support indefinite length
1244 encoding. This is experimental and needs additional code to
1245 be useful, such as an ASN1 bio and some enhanced streaming
1248 Extend template encode functionality so that tagging is passed
1249 down to the template encoder.
1252 *) Let 'openssl req' fail if an argument to '-newkey' is not
1253 recognized instead of using RSA as a default.
1256 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1257 As these are not official, they are not included in "ALL";
1258 the "ECCdraft" ciphersuite group alias can be used to select them.
1259 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1261 *) Add ECDH engine support.
1262 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1264 *) Add ECDH in new directory crypto/ecdh/.
1265 [Douglas Stebila (Sun Microsystems Laboratories)]
1267 *) Let BN_rand_range() abort with an error after 100 iterations
1268 without success (which indicates a broken PRNG).
1271 *) Change BN_mod_sqrt() so that it verifies that the input value
1272 is really the square of the return value. (Previously,
1273 BN_mod_sqrt would show GIGO behaviour.)
1276 *) Add named elliptic curves over binary fields from X9.62, SECG,
1277 and WAP/WTLS; add OIDs that were still missing.
1279 [Sheueling Chang Shantz and Douglas Stebila
1280 (Sun Microsystems Laboratories)]
1282 *) Extend the EC library for elliptic curves over binary fields
1283 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1286 EC_GF2m_simple_method
1290 EC_GROUP_new_curve_GF2m
1291 EC_GROUP_set_curve_GF2m
1292 EC_GROUP_get_curve_GF2m
1293 EC_POINT_set_affine_coordinates_GF2m
1294 EC_POINT_get_affine_coordinates_GF2m
1295 EC_POINT_set_compressed_coordinates_GF2m
1297 Point compression for binary fields is disabled by default for
1298 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1301 As binary polynomials are represented as BIGNUMs, various members
1302 of the EC_GROUP and EC_POINT data structures can be shared
1303 between the implementations for prime fields and binary fields;
1304 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1305 are essentially identical to their ..._GFp counterparts.
1306 (For simplicity, the '..._GFp' prefix has been dropped from
1307 various internal method names.)
1309 An internal 'field_div' method (similar to 'field_mul' and
1310 'field_sqr') has been added; this is used only for binary fields.
1312 [Sheueling Chang Shantz and Douglas Stebila
1313 (Sun Microsystems Laboratories)]
1315 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1316 through methods ('mul', 'precompute_mult').
1318 The generic implementations (now internally called 'ec_wNAF_mul'
1319 and 'ec_wNAF_precomputed_mult') remain the default if these
1320 methods are undefined.
1322 [Sheueling Chang Shantz and Douglas Stebila
1323 (Sun Microsystems Laboratories)]
1325 *) New function EC_GROUP_get_degree, which is defined through
1326 EC_METHOD. For curves over prime fields, this returns the bit
1327 length of the modulus.
1329 [Sheueling Chang Shantz and Douglas Stebila
1330 (Sun Microsystems Laboratories)]
1332 *) New functions EC_GROUP_dup, EC_POINT_dup.
1333 (These simply call ..._new and ..._copy).
1335 [Sheueling Chang Shantz and Douglas Stebila
1336 (Sun Microsystems Laboratories)]
1338 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1339 Polynomials are represented as BIGNUMs (where the sign bit is not
1340 used) in the following functions [macros]:
1343 BN_GF2m_sub [= BN_GF2m_add]
1344 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1345 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1346 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1348 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1349 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1350 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1351 BN_GF2m_cmp [= BN_ucmp]
1353 (Note that only the 'mod' functions are actually for fields GF(2^m).
1354 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1356 For some functions, an the irreducible polynomial defining a
1357 field can be given as an 'unsigned int[]' with strictly
1358 decreasing elements giving the indices of those bits that are set;
1359 i.e., p[] represents the polynomial
1360 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1362 p[0] > p[1] > ... > p[k] = 0.
1363 This applies to the following functions:
1368 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1369 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1371 BN_GF2m_mod_sqrt_arr
1372 BN_GF2m_mod_solve_quad_arr
1376 Conversion can be performed by the following functions:
1381 bntest.c has additional tests for binary polynomial arithmetic.
1383 Two implementations for BN_GF2m_mod_div() are available.
1384 The default algorithm simply uses BN_GF2m_mod_inv() and
1385 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1386 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1387 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1389 [Sheueling Chang Shantz and Douglas Stebila
1390 (Sun Microsystems Laboratories)]
1392 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1393 functionality is disabled at compile-time.
1394 [Douglas Stebila <douglas.stebila@sun.com>]
1396 *) Change default behaviour of 'openssl asn1parse' so that more
1397 information is visible when viewing, e.g., a certificate:
1399 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1400 mode the content of non-printable OCTET STRINGs is output in a
1401 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1402 avoid the appearance of a printable string.
1403 [Nils Larsch <nla@trustcenter.de>]
1405 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1407 EC_GROUP_set_asn1_flag()
1408 EC_GROUP_get_asn1_flag()
1409 EC_GROUP_set_point_conversion_form()
1410 EC_GROUP_get_point_conversion_form()
1411 These control ASN1 encoding details:
1412 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1413 has been set to OPENSSL_EC_NAMED_CURVE.
1414 - Points are encoded in uncompressed form by default; options for
1415 asn1_for are as for point2oct, namely
1416 POINT_CONVERSION_COMPRESSED
1417 POINT_CONVERSION_UNCOMPRESSED
1418 POINT_CONVERSION_HYBRID
1420 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1423 EC_GROUP_get0_seed()
1424 EC_GROUP_get_seed_len()
1425 This is used only for ASN1 purposes (so far).
1426 [Nils Larsch <nla@trustcenter.de>]
1428 *) Add 'field_type' member to EC_METHOD, which holds the NID
1429 of the appropriate field type OID. The new function
1430 EC_METHOD_get_field_type() returns this value.
1431 [Nils Larsch <nla@trustcenter.de>]
1436 EC_POINT_point2hex()
1437 EC_POINT_hex2point()
1438 providing useful interfaces to EC_POINT_point2oct() and
1439 EC_POINT_oct2point().
1440 [Nils Larsch <nla@trustcenter.de>]
1442 *) Change internals of the EC library so that the functions
1443 EC_GROUP_set_generator()
1444 EC_GROUP_get_generator()
1445 EC_GROUP_get_order()
1446 EC_GROUP_get_cofactor()
1447 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1448 to methods, which would lead to unnecessary code duplication when
1449 adding different types of curves.
1450 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1452 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1453 arithmetic, and such that modified wNAFs are generated
1454 (which avoid length expansion in many cases).
1457 *) Add a function EC_GROUP_check_discriminant() (defined via
1458 EC_METHOD) that verifies that the curve discriminant is non-zero.
1460 Add a function EC_GROUP_check() that makes some sanity tests
1461 on a EC_GROUP, its generator and order. This includes
1462 EC_GROUP_check_discriminant().
1463 [Nils Larsch <nla@trustcenter.de>]
1465 *) Add ECDSA in new directory crypto/ecdsa/.
1467 Add applications 'openssl ecparam' and 'openssl ecdsa'
1468 (these are based on 'openssl dsaparam' and 'openssl dsa').
1470 ECDSA support is also included in various other files across the
1471 library. Most notably,
1472 - 'openssl req' now has a '-newkey ecdsa:file' option;
1473 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1474 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1475 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1476 them suitable for ECDSA where domain parameters must be
1477 extracted before the specific public key;
1478 - ECDSA engine support has been added.
1479 [Nils Larsch <nla@trustcenter.de>]
1481 *) Include some named elliptic curves, and add OIDs from X9.62,
1482 SECG, and WAP/WTLS. Each curve can be obtained from the new
1484 EC_GROUP_new_by_curve_name(),
1485 and the list of available named curves can be obtained with
1486 EC_get_builtin_curves().
1487 Also add a 'curve_name' member to EC_GROUP objects, which can be
1489 EC_GROUP_set_curve_name()
1490 EC_GROUP_get_curve_name()
1491 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1493 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1494 was actually never needed) and in BN_mul(). The removal in BN_mul()
1495 required a small change in bn_mul_part_recursive() and the addition
1496 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1497 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1498 bn_sub_words() and bn_add_words() except they take arrays with
1502 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
1504 *) In the SSL/TLS server implementation, be strict about session ID
1505 context matching (which matters if an application uses a single
1506 external cache for different purposes). Previously,
1507 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1508 set. This did ensure strict client verification, but meant that,
1509 with applications using a single external cache for quite
1510 different requirements, clients could circumvent ciphersuite
1511 restrictions for a given session ID context by starting a session
1512 in a different context.
1515 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
1517 *) Cleanse PEM buffers before freeing them since they may contain
1519 [Benjamin Bennett <ben@psc.edu>]
1521 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1522 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1523 authentication-only ciphersuites.
1526 *) Since AES128 and AES256 share a single mask bit in the logic of
1527 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1528 kludge to work properly if AES128 is available and AES256 isn't.
1531 *) Expand security boundary to match 1.1.1 module.
1534 *) Remove redundant features: hash file source, editing of test vectors
1535 modify fipsld to use external fips_premain.c signature.
1538 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
1539 run algorithm test programs.
1542 *) Make algorithm test programs more tolerant of whitespace.
1545 *) Have SSL/TLS server implementation tolerate "mismatched" record
1546 protocol version while receiving ClientHello even if the
1547 ClientHello is fragmented. (The server can't insist on the
1548 particular protocol version it has chosen before the ServerHello
1549 message has informed the client about his choice.)
1552 *) Load error codes if they are not already present instead of using a
1553 static variable. This allows them to be cleanly unloaded and reloaded.
1556 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
1558 *) Introduce limits to prevent malicious keys being able to
1559 cause a denial of service. (CVE-2006-2940)
1560 [Steve Henson, Bodo Moeller]
1562 *) Fix ASN.1 parsing of certain invalid structures that can result
1563 in a denial of service. (CVE-2006-2937) [Steve Henson]
1565 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1566 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1568 *) Fix SSL client code which could crash if connecting to a
1569 malicious SSLv2 server. (CVE-2006-4343)
1570 [Tavis Ormandy and Will Drewry, Google Security Team]
1572 *) Change ciphersuite string processing so that an explicit
1573 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
1574 will no longer include "AES128-SHA"), and any other similar
1575 ciphersuite (same bitmap) from *other* protocol versions (so that
1576 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
1577 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
1578 changes from 0.9.8b and 0.9.8d.
1581 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
1583 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1584 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1586 *) Change the Unix randomness entropy gathering to use poll() when
1587 possible instead of select(), since the latter has some
1588 undesirable limitations.
1589 [Darryl Miles via Richard Levitte and Bodo Moeller]
1591 *) Disable rogue ciphersuites:
1593 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1594 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1595 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1597 The latter two were purportedly from
1598 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1601 Also deactive the remaining ciphersuites from
1602 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1603 unofficial, and the ID has long expired.
1606 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1607 dual-core machines) and other potential thread-safety issues.
1610 Changes between 0.9.7i and 0.9.7j [04 May 2006]
1612 *) Adapt fipsld and the build system to link against the validated FIPS
1613 module in FIPS mode.
1616 *) Fixes for VC++ 2005 build under Windows.
1619 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
1620 from a Windows bash shell such as MSYS. It is autodetected from the
1621 "config" script when run from a VC++ environment. Modify standard VC++
1622 build to use fipscanister.o from the GNU make build.
1625 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1627 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1628 The value now differs depending on if you build for FIPS or not.
1629 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1630 safely run with a non-FIPSed libcrypto, as it may crash because of
1631 the difference induced by this change.
1634 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1636 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1637 (part of SSL_OP_ALL). This option used to disable the
1638 countermeasure against man-in-the-middle protocol-version
1639 rollback in the SSL 2.0 server implementation, which is a bad
1640 idea. (CVE-2005-2969)
1642 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1643 for Information Security, National Institute of Advanced Industrial
1644 Science and Technology [AIST], Japan)]
1646 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1647 mainly for FIPS compliance and not fully integrated at this stage.
1650 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1651 the exponentiation using a fixed-length exponent. (Otherwise,
1652 the information leaked through timing could expose the secret key
1653 after many signatures; cf. Bleichenbacher's attack on DSA with
1657 *) Make a new fixed-window mod_exp implementation the default for
1658 RSA, DSA, and DH private-key operations so that the sequence of
1659 squares and multiplies and the memory access pattern are
1660 independent of the particular secret key. This will mitigate
1661 cache-timing and potential related attacks.
1663 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1664 and this is automatically used by BN_mod_exp_mont() if the new flag
1665 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1666 will use this BN flag for private exponents unless the flag
1667 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1668 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1670 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1672 *) Change the client implementation for SSLv23_method() and
1673 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1674 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1675 (Previously, the SSL 2.0 backwards compatible Client Hello
1676 message format would be used even with SSL_OP_NO_SSLv2.)
1679 *) Add support for smime-type MIME parameter in S/MIME messages which some
1683 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1684 a threadsafe manner. Modify rsa code to use new function and add calls
1685 to dsa and dh code (which had race conditions before).
1688 *) Include the fixed error library code in the C error file definitions
1689 instead of fixing them up at runtime. This keeps the error code
1690 structures constant.
1693 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1695 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1698 *) Fixes for newer kerberos headers. NB: the casts are needed because
1699 the 'length' field is signed on one version and unsigned on another
1700 with no (?) obvious way to tell the difference, without these VC++
1701 complains. Also the "definition" of FAR (blank) is no longer included
1702 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1703 some needed definitions.
1706 *) Undo Cygwin change.
1709 *) Added support for proxy certificates according to RFC 3820.
1710 Because they may be a security thread to unaware applications,
1711 they must be explicitely allowed in run-time. See
1712 docs/HOWTO/proxy_certificates.txt for further information.
1715 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1717 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1718 server and client random values. Previously
1719 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1720 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1722 This change has negligible security impact because:
1724 1. Server and client random values still have 24 bytes of pseudo random
1727 2. Server and client random values are sent in the clear in the initial
1730 3. The master secret is derived using the premaster secret (48 bytes in
1731 size for static RSA ciphersuites) as well as client server and random
1734 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1737 [Stephen Henson, reported by UK NISCC]
1739 *) Use Windows randomness collection on Cygwin.
1742 *) Fix hang in EGD/PRNGD query when communication socket is closed
1743 prematurely by EGD/PRNGD.
1744 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1746 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1749 *) Back-port of selected performance improvements from development
1750 branch, as well as improved support for PowerPC platforms.
1753 *) Add lots of checks for memory allocation failure, error codes to indicate
1754 failure and freeing up memory if a failure occurs.
1755 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1757 *) Add new -passin argument to dgst.
1760 *) Perform some character comparisons of different types in X509_NAME_cmp:
1761 this is needed for some certificates that reencode DNs into UTF8Strings
1762 (in violation of RFC3280) and can't or wont issue name rollover
1766 *) Make an explicit check during certificate validation to see that
1767 the CA setting in each certificate on the chain is correct. As a
1768 side effect always do the following basic checks on extensions,
1769 not just when there's an associated purpose to the check:
1771 - if there is an unhandled critical extension (unless the user
1772 has chosen to ignore this fault)
1773 - if the path length has been exceeded (if one is set at all)
1774 - that certain extensions fit the associated purpose (if one has
1778 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1780 *) Avoid a race condition when CRLs are checked in a multi threaded
1781 environment. This would happen due to the reordering of the revoked
1782 entries during signature checking and serial number lookup. Now the
1783 encoding is cached and the serial number sort performed under a lock.
1784 Add new STACK function sk_is_sorted().
1787 *) Add Delta CRL to the extension code.
1790 *) Various fixes to s3_pkt.c so alerts are sent properly.
1791 [David Holmes <d.holmes@f5.com>]
1793 *) Reduce the chances of duplicate issuer name and serial numbers (in
1794 violation of RFC3280) using the OpenSSL certificate creation utilities.
1795 This is done by creating a random 64 bit value for the initial serial
1796 number when a serial number file is created or when a self signed
1797 certificate is created using 'openssl req -x509'. The initial serial
1798 number file is created using 'openssl x509 -next_serial' in CA.pl
1799 rather than being initialized to 1.
1802 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1804 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1805 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1806 [Joe Orton, Steve Henson]
1808 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1810 [Joe Orton, Steve Henson]
1812 *) Make it possible to have multiple active certificates with the same
1813 subject in the CA index file. This is done only if the keyword
1814 'unique_subject' is set to 'no' in the main CA section (default
1815 if 'CA_default') of the configuration file. The value is saved
1816 with the database itself in a separate index attribute file,
1817 named like the index file with '.attr' appended to the name.
1820 *) X509 verify fixes. Disable broken certificate workarounds when
1821 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1822 keyUsage extension present. Don't accept CRLs with unhandled critical
1823 extensions: since verify currently doesn't process CRL extensions this
1824 rejects a CRL with *any* critical extensions. Add new verify error codes
1828 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1829 A clarification of RFC2560 will require the use of OCTET STRINGs and
1830 some implementations cannot handle the current raw format. Since OpenSSL
1831 copies and compares OCSP nonces as opaque blobs without any attempt at
1832 parsing them this should not create any compatibility issues.
1835 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1836 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1837 this HMAC (and other) operations are several times slower than OpenSSL
1841 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1842 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1844 *) Use the correct content when signing type "other".
1847 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1849 *) Fix various bugs revealed by running the NISCC test suite:
1851 Stop out of bounds reads in the ASN1 code when presented with
1852 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1854 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1856 If verify callback ignores invalid public key errors don't try to check
1857 certificate signature with the NULL public key.
1861 *) New -ignore_err option in ocsp application to stop the server
1862 exiting on the first error in a request.
1865 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1866 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1870 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1871 extra data after the compression methods not only for TLS 1.0
1872 but also for SSL 3.0 (as required by the specification).
1873 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1875 *) Change X509_certificate_type() to mark the key as exported/exportable
1876 when it's 512 *bits* long, not 512 bytes.
1879 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1880 blocks during encryption.
1883 *) Various fixes to base64 BIO and non blocking I/O. On write
1884 flushes were not handled properly if the BIO retried. On read
1885 data was not being buffered properly and had various logic bugs.
1886 This also affects blocking I/O when the data being decoded is a
1890 *) Various S/MIME bugfixes and compatibility changes:
1891 output correct application/pkcs7 MIME type if
1892 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1893 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1894 of files as .eml work). Correctly handle very long lines in MIME
1898 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1900 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1901 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1902 a protocol version number mismatch like a decryption error
1903 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1906 *) Turn on RSA blinding by default in the default implementation
1907 to avoid a timing attack. Applications that don't want it can call
1908 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1909 They would be ill-advised to do so in most cases.
1910 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1912 *) Change RSA blinding code so that it works when the PRNG is not
1913 seeded (in this case, the secret RSA exponent is abused as
1914 an unpredictable seed -- if it is not unpredictable, there
1915 is no point in blinding anyway). Make RSA blinding thread-safe
1916 by remembering the creator's thread ID in rsa->blinding and
1917 having all other threads use local one-time blinding factors
1918 (this requires more computation than sharing rsa->blinding, but
1919 avoids excessive locking; and if an RSA object is not shared
1920 between threads, blinding will still be very fast).
1923 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1924 ENGINE as defaults for all supported algorithms irrespective of
1925 the 'flags' parameter. 'flags' is now honoured, so applications
1926 should make sure they are passing it correctly.
1929 *) Target "mingw" now allows native Windows code to be generated in
1930 the Cygwin environment as well as with the MinGW compiler.
1933 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1935 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1936 via timing by performing a MAC computation even if incorrrect
1937 block cipher padding has been found. This is a countermeasure
1938 against active attacks where the attacker has to distinguish
1939 between bad padding and a MAC verification error. (CVE-2003-0078)
1941 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1942 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1943 Martin Vuagnoux (EPFL, Ilion)]
1945 *) Make the no-err option work as intended. The intention with no-err
1946 is not to have the whole error stack handling routines removed from
1947 libcrypto, it's only intended to remove all the function name and
1948 reason texts, thereby removing some of the footprint that may not
1949 be interesting if those errors aren't displayed anyway.
1951 NOTE: it's still possible for any application or module to have it's
1952 own set of error texts inserted. The routines are there, just not
1953 used by default when no-err is given.
1956 *) Add support for FreeBSD on IA64.
1957 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1959 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1960 Kerberos function mit_des_cbc_cksum(). Before this change,
1961 the value returned by DES_cbc_cksum() was like the one from
1962 mit_des_cbc_cksum(), except the bytes were swapped.
1963 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1965 *) Allow an application to disable the automatic SSL chain building.
1966 Before this a rather primitive chain build was always performed in
1967 ssl3_output_cert_chain(): an application had no way to send the
1968 correct chain if the automatic operation produced an incorrect result.
1970 Now the chain builder is disabled if either:
1972 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1974 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1976 The reasoning behind this is that an application would not want the
1977 auto chain building to take place if extra chain certificates are
1978 present and it might also want a means of sending no additional
1979 certificates (for example the chain has two certificates and the
1983 *) Add the possibility to build without the ENGINE framework.
1984 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1986 *) Under Win32 gmtime() can return NULL: check return value in
1987 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1990 *) DSA routines: under certain error conditions uninitialized BN objects
1991 could be freed. Solution: make sure initialization is performed early
1992 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1993 Nils Larsch <nla@trustcenter.de> via PR#459)
1996 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1997 checked on reconnect on the client side, therefore session resumption
1998 could still fail with a "ssl session id is different" error. This
1999 behaviour is masked when SSL_OP_ALL is used due to
2000 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2001 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2002 followup to PR #377.
2005 *) IA-32 assembler support enhancements: unified ELF targets, support
2006 for SCO/Caldera platforms, fix for Cygwin shared build.
2009 *) Add support for FreeBSD on sparc64. As a consequence, support for
2010 FreeBSD on non-x86 processors is separate from x86 processors on
2011 the config script, much like the NetBSD support.
2012 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2014 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2016 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2019 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2020 code (06) was taken as the first octet of the session ID and the last
2021 octet was ignored consequently. As a result SSLv2 client side session
2022 caching could not have worked due to the session ID mismatch between
2024 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2028 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2029 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2033 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2034 seems that in spite of existing for more than a year, many application
2035 author have done nothing to provide the necessary callbacks, which
2036 means that this particular engine will not work properly anywhere.
2037 This is a very unfortunate situation which forces us, in the name
2038 of usability, to give the hw_ncipher.c a static lock, which is part
2040 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2041 appear in 0.9.8 or later. We EXPECT application authors to have
2042 dealt properly with this when 0.9.8 is released (unless we actually
2043 make such changes in the libcrypto locking code that changes will
2044 have to be made anyway).
2047 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2048 octets have been read, EOF or an error occurs. Without this change
2049 some truncated ASN1 structures will not produce an error.
2052 *) Disable Heimdal support, since it hasn't been fully implemented.
2053 Still give the possibility to force the use of Heimdal, but with
2054 warnings and a request that patches get sent to openssl-dev.
2057 *) Add the VC-CE target, introduce the WINCE sysname, and add
2058 INSTALL.WCE and appropriate conditionals to make it build.
2059 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2061 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2062 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2063 edit numbers of the version.
2064 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2066 *) Introduce safe string copy and catenation functions
2067 (BUF_strlcpy() and BUF_strlcat()).
2068 [Ben Laurie (CHATS) and Richard Levitte]
2070 *) Avoid using fixed-size buffers for one-line DNs.
2071 [Ben Laurie (CHATS)]
2073 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2074 resizing buffers containing secrets, and use where appropriate.
2075 [Ben Laurie (CHATS)]
2077 *) Avoid using fixed size buffers for configuration file location.
2078 [Ben Laurie (CHATS)]
2080 *) Avoid filename truncation for various CA files.
2081 [Ben Laurie (CHATS)]
2083 *) Use sizeof in preference to magic numbers.
2084 [Ben Laurie (CHATS)]
2086 *) Avoid filename truncation in cert requests.
2087 [Ben Laurie (CHATS)]
2089 *) Add assertions to check for (supposedly impossible) buffer
2091 [Ben Laurie (CHATS)]
2093 *) Don't cache truncated DNS entries in the local cache (this could
2094 potentially lead to a spoofing attack).
2095 [Ben Laurie (CHATS)]
2097 *) Fix various buffers to be large enough for hex/decimal
2098 representations in a platform independent manner.
2099 [Ben Laurie (CHATS)]
2101 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2102 resizing buffers containing secrets, and use where appropriate.
2103 [Ben Laurie (CHATS)]
2105 *) Add BIO_indent() to avoid much slightly worrying code to do
2107 [Ben Laurie (CHATS)]
2109 *) Convert sprintf()/BIO_puts() to BIO_printf().
2110 [Ben Laurie (CHATS)]
2112 *) buffer_gets() could terminate with the buffer only half
2114 [Ben Laurie (CHATS)]
2116 *) Add assertions to prevent user-supplied crypto functions from
2117 overflowing internal buffers by having large block sizes, etc.
2118 [Ben Laurie (CHATS)]
2120 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2122 [Ben Laurie (CHATS)]
2124 *) Eliminate unused copy of key in RC4.
2125 [Ben Laurie (CHATS)]
2127 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2128 [Ben Laurie (CHATS)]
2130 *) Fix off-by-one error in EGD path.
2131 [Ben Laurie (CHATS)]
2133 *) If RANDFILE path is too long, ignore instead of truncating.
2134 [Ben Laurie (CHATS)]
2136 *) Eliminate unused and incorrectly sized X.509 structure
2138 [Ben Laurie (CHATS)]
2140 *) Eliminate unused and dangerous function knumber().
2141 [Ben Laurie (CHATS)]
2143 *) Eliminate unused and dangerous structure, KSSL_ERR.
2144 [Ben Laurie (CHATS)]
2146 *) Protect against overlong session ID context length in an encoded
2147 session object. Since these are local, this does not appear to be
2149 [Ben Laurie (CHATS)]
2151 *) Change from security patch (see 0.9.6e below) that did not affect
2152 the 0.9.6 release series:
2154 Remote buffer overflow in SSL3 protocol - an attacker could
2155 supply an oversized master key in Kerberos-enabled versions.
2157 [Ben Laurie (CHATS)]
2159 *) Change the SSL kerb5 codes to match RFC 2712.
2162 *) Make -nameopt work fully for req and add -reqopt switch.
2163 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2165 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2166 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2168 *) Make sure tests can be performed even if the corresponding algorithms
2169 have been removed entirely. This was also the last step to make
2170 OpenSSL compilable with DJGPP under all reasonable conditions.
2171 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2173 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2174 to allow version independent disabling of normally unselected ciphers,
2175 which may be activated as a side-effect of selecting a single cipher.
2177 (E.g., cipher list string "RSA" enables ciphersuites that are left
2178 out of "ALL" because they do not provide symmetric encryption.
2179 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2180 [Lutz Jaenicke, Bodo Moeller]
2182 *) Add appropriate support for separate platform-dependent build
2183 directories. The recommended way to make a platform-dependent
2184 build directory is the following (tested on Linux), maybe with
2187 # Place yourself outside of the OpenSSL source tree. In
2188 # this example, the environment variable OPENSSL_SOURCE
2189 # is assumed to contain the absolute OpenSSL source directory.
2190 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2191 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2192 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2193 mkdir -p `dirname $F`
2194 ln -s $OPENSSL_SOURCE/$F $F
2197 To be absolutely sure not to disturb the source tree, a "make clean"
2198 is a good thing. If it isn't successfull, don't worry about it,
2199 it probably means the source directory is very clean.
2202 *) Make sure any ENGINE control commands make local copies of string
2203 pointers passed to them whenever necessary. Otherwise it is possible
2204 the caller may have overwritten (or deallocated) the original string
2205 data when a later ENGINE operation tries to use the stored values.
2206 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2208 *) Improve diagnostics in file reading and command-line digests.
2209 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2211 *) Add AES modes CFB and OFB to the object database. Correct an
2212 error in AES-CFB decryption.
2215 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2216 allows existing EVP_CIPHER_CTX structures to be reused after
2217 calling EVP_*Final(). This behaviour is used by encryption
2218 BIOs and some applications. This has the side effect that
2219 applications must explicitly clean up cipher contexts with
2220 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2223 *) Check the values of dna and dnb in bn_mul_recursive before calling
2224 bn_mul_comba (a non zero value means the a or b arrays do not contain
2225 n2 elements) and fallback to bn_mul_normal if either is not zero.
2228 *) Fix escaping of non-ASCII characters when using the -subj option
2229 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2232 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2233 form for "surname", serialNumber has no short form.
2234 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2235 therefore remove "mail" short name for "internet 7".
2236 The OID for unique identifiers in X509 certificates is
2237 x500UniqueIdentifier, not uniqueIdentifier.
2238 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2241 *) Add an "init" command to the ENGINE config module and auto initialize
2242 ENGINEs. Without any "init" command the ENGINE will be initialized
2243 after all ctrl commands have been executed on it. If init=1 the
2244 ENGINE is initailized at that point (ctrls before that point are run
2245 on the uninitialized ENGINE and after on the initialized one). If
2246 init=0 then the ENGINE will not be iniatialized at all.
2249 *) Fix the 'app_verify_callback' interface so that the user-defined
2250 argument is actually passed to the callback: In the
2251 SSL_CTX_set_cert_verify_callback() prototype, the callback
2252 declaration has been changed from
2255 int (*cb)(X509_STORE_CTX *,void *);
2256 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2257 i=s->ctx->app_verify_callback(&ctx)
2258 has been changed into
2259 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2261 To update applications using SSL_CTX_set_cert_verify_callback(),
2262 a dummy argument can be added to their callback functions.
2263 [D. K. Smetters <smetters@parc.xerox.com>]
2265 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2266 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2268 *) Add and OPENSSL_LOAD_CONF define which will cause
2269 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2270 This allows older applications to transparently support certain
2271 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2272 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2273 load the config file and OPENSSL_add_all_algorithms_conf() which will
2274 always load it have also been added.
2277 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2278 Adjust NIDs and EVP layer.
2279 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2281 *) Config modules support in openssl utility.
2283 Most commands now load modules from the config file,
2284 though in a few (such as version) this isn't done
2285 because it couldn't be used for anything.
2287 In the case of ca and req the config file used is
2288 the same as the utility itself: that is the -config
2289 command line option can be used to specify an
2293 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2294 use "openssl_conf" if filename is NULL use default openssl config file.
2297 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2298 config section name. Add a new flag to tolerate a missing config file
2299 and move code to CONF_modules_load_file().
2302 *) Support for crypto accelerator cards from Accelerated Encryption
2303 Processing, www.aep.ie. (Use engine 'aep')
2304 The support was copied from 0.9.6c [engine] and adapted/corrected
2305 to work with the new engine framework.
2306 [AEP Inc. and Richard Levitte]
2308 *) Support for SureWare crypto accelerator cards from Baltimore
2309 Technologies. (Use engine 'sureware')
2310 The support was copied from 0.9.6c [engine] and adapted
2311 to work with the new engine framework.
2314 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2315 make the newer ENGINE framework commands for the CHIL engine work.
2316 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2318 *) Make it possible to produce shared libraries on ReliantUNIX.
2319 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2321 *) Add the configuration target debug-linux-ppro.
2322 Make 'openssl rsa' use the general key loading routines
2323 implemented in apps.c, and make those routines able to
2324 handle the key format FORMAT_NETSCAPE and the variant
2326 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2328 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2329 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2331 *) Add -keyform to rsautl, and document -engine.
2332 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2334 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2335 BIO_R_NO_SUCH_FILE error code rather than the generic
2336 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2339 *) Add new functions
2341 ERR_peek_last_error_line
2342 ERR_peek_last_error_line_data.
2343 These are similar to
2346 ERR_peek_error_line_data,
2347 but report on the latest error recorded rather than the first one
2348 still in the error queue.
2349 [Ben Laurie, Bodo Moeller]
2351 *) default_algorithms option in ENGINE config module. This allows things
2353 default_algorithms = ALL
2354 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2357 *) Prelminary ENGINE config module.
2360 *) New experimental application configuration code.
2363 *) Change the AES code to follow the same name structure as all other
2364 symmetric ciphers, and behave the same way. Move everything to
2365 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2366 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2368 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2369 [Ben Laurie and Theo de Raadt]
2371 *) Add option to output public keys in req command.
2372 [Massimiliano Pala madwolf@openca.org]
2374 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2375 (up to about 10% better than before for P-192 and P-224).
2378 *) New functions/macros
2380 SSL_CTX_set_msg_callback(ctx, cb)
2381 SSL_CTX_set_msg_callback_arg(ctx, arg)
2382 SSL_set_msg_callback(ssl, cb)
2383 SSL_set_msg_callback_arg(ssl, arg)
2385 to request calling a callback function
2387 void cb(int write_p, int version, int content_type,
2388 const void *buf, size_t len, SSL *ssl, void *arg)
2390 whenever a protocol message has been completely received
2391 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2392 protocol version according to which the SSL library interprets
2393 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2394 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2395 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2396 specification (change_cipher_spec(20), alert(21), handshake(22)).
2397 'buf' and 'len' point to the actual message, 'ssl' to the
2398 SSL object, and 'arg' is the application-defined value set by
2399 SSL[_CTX]_set_msg_callback_arg().
2401 'openssl s_client' and 'openssl s_server' have new '-msg' options
2402 to enable a callback that displays all protocol messages.
2405 *) Change the shared library support so shared libraries are built as
2406 soon as the corresponding static library is finished, and thereby get
2407 openssl and the test programs linked against the shared library.
2408 This still only happens when the keyword "shard" has been given to
2409 the configuration scripts.
2411 NOTE: shared library support is still an experimental thing, and
2412 backward binary compatibility is still not guaranteed.
2413 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2415 *) Add support for Subject Information Access extension.
2416 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2418 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2419 additional bytes when new memory had to be allocated, not just
2420 when reusing an existing buffer.
2423 *) New command line and configuration option 'utf8' for the req command.
2424 This allows field values to be specified as UTF8 strings.
2427 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2428 runs for the former and machine-readable output for the latter.
2431 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2432 of the e-mail address in the DN (i.e., it will go into a certificate
2433 extension only). The new configuration file option 'email_in_dn = no'
2434 has the same effect.
2435 [Massimiliano Pala madwolf@openca.org]
2437 *) Change all functions with names starting with des_ to be starting
2438 with DES_ instead. Add wrappers that are compatible with libdes,
2439 but are named _ossl_old_des_*. Finally, add macros that map the
2440 des_* symbols to the corresponding _ossl_old_des_* if libdes
2441 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2442 desired, the des_* symbols will be mapped to DES_*, with one
2445 Since we provide two compatibility mappings, the user needs to
2446 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2447 compatibility is desired. The default (i.e., when that macro
2448 isn't defined) is OpenSSL 0.9.6c compatibility.
2450 There are also macros that enable and disable the support of old
2451 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2452 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2453 are defined, the default will apply: to support the old des routines.
2455 In either case, one must include openssl/des.h to get the correct
2456 definitions. Do not try to just include openssl/des_old.h, that
2459 NOTE: This is a major break of an old API into a new one. Software
2460 authors are encouraged to switch to the DES_ style functions. Some
2461 time in the future, des_old.h and the libdes compatibility functions
2462 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2463 default), and then completely removed.
2466 *) Test for certificates which contain unsupported critical extensions.
2467 If such a certificate is found during a verify operation it is
2468 rejected by default: this behaviour can be overridden by either
2469 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2470 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2471 X509_supported_extension() has also been added which returns 1 if a
2472 particular extension is supported.
2475 *) Modify the behaviour of EVP cipher functions in similar way to digests
2476 to retain compatibility with existing code.
2479 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2480 compatibility with existing code. In particular the 'ctx' parameter does
2481 not have to be to be initialized before the call to EVP_DigestInit() and
2482 it is tidied up after a call to EVP_DigestFinal(). New function
2483 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2484 EVP_MD_CTX_copy() changed to not require the destination to be
2485 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2486 requires the destination to be valid.
2488 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2489 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2492 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2493 so that complete 'Handshake' protocol structures are kept in memory
2494 instead of overwriting 'msg_type' and 'length' with 'body' data.
2497 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2498 [Massimo Santin via Richard Levitte]
2500 *) Major restructuring to the underlying ENGINE code. This includes
2501 reduction of linker bloat, separation of pure "ENGINE" manipulation
2502 (initialisation, etc) from functionality dealing with implementations
2503 of specific crypto iterfaces. This change also introduces integrated
2504 support for symmetric ciphers and digest implementations - so ENGINEs
2505 can now accelerate these by providing EVP_CIPHER and EVP_MD
2506 implementations of their own. This is detailed in crypto/engine/README
2507 as it couldn't be adequately described here. However, there are a few
2508 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2509 were changed in the original introduction of ENGINE code have now
2510 reverted back - the hooking from this code to ENGINE is now a good
2511 deal more passive and at run-time, operations deal directly with
2512 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2513 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2514 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2515 they were not being used by the framework as there is no concept of a
2516 BIGNUM_METHOD and they could not be generalised to the new
2517 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2518 ENGINE_cpy() has been removed as it cannot be consistently defined in
2522 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2525 *) Change mkdef.pl to sort symbols that get the same entry number,
2526 and make sure the automatically generated functions ERR_load_*
2527 become part of libeay.num as well.
2530 *) New function SSL_renegotiate_pending(). This returns true once
2531 renegotiation has been requested (either SSL_renegotiate() call
2532 or HelloRequest/ClientHello receveived from the peer) and becomes
2533 false once a handshake has been completed.
2534 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2535 sends a HelloRequest, but does not ensure that a handshake takes
2536 place. SSL_renegotiate_pending() is useful for checking if the
2537 client has followed the request.)
2540 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2541 By default, clients may request session resumption even during
2542 renegotiation (if session ID contexts permit); with this option,
2543 session resumption is possible only in the first handshake.
2545 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2546 more bits available for options that should not be part of
2547 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2550 *) Add some demos for certificate and certificate request creation.
2553 *) Make maximum certificate chain size accepted from the peer application
2554 settable (SSL*_get/set_max_cert_list()), as proposed by
2555 "Douglas E. Engert" <deengert@anl.gov>.
2558 *) Add support for shared libraries for Unixware-7
2559 (Boyd Lynn Gerber <gerberb@zenez.com>).
2562 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2563 be done prior to destruction. Use this to unload error strings from
2564 ENGINEs that load their own error strings. NB: This adds two new API
2565 functions to "get" and "set" this destroy handler in an ENGINE.
2568 *) Alter all existing ENGINE implementations (except "openssl" and
2569 "openbsd") to dynamically instantiate their own error strings. This
2570 makes them more flexible to be built both as statically-linked ENGINEs
2571 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2572 Also, add stub code to each that makes building them as self-contained
2573 shared-libraries easier (see README.ENGINE).
2576 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2577 implementations into applications that are completely implemented in
2578 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2579 commands that can be used to configure what shared-library to load and
2580 to control aspects of the way it is handled. Also, made an update to
2581 the README.ENGINE file that brings its information up-to-date and
2582 provides some information and instructions on the "dynamic" ENGINE
2583 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2586 *) Make it possible to unload ranges of ERR strings with a new
2587 "ERR_unload_strings" function.
2590 *) Add a copy() function to EVP_MD.
2593 *) Make EVP_MD routines take a context pointer instead of just the
2594 md_data void pointer.
2597 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2598 that the digest can only process a single chunk of data
2599 (typically because it is provided by a piece of
2600 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2601 is only going to provide a single chunk of data, and hence the
2602 framework needn't accumulate the data for oneshot drivers.
2605 *) As with "ERR", make it possible to replace the underlying "ex_data"
2606 functions. This change also alters the storage and management of global
2607 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2608 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2609 index counters. The API functions that use this state have been changed
2610 to take a "class_index" rather than pointers to the class's local STACK
2611 and counter, and there is now an API function to dynamically create new
2612 classes. This centralisation allows us to (a) plug a lot of the
2613 thread-safety problems that existed, and (b) makes it possible to clean
2614 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2615 such data would previously have always leaked in application code and
2616 workarounds were in place to make the memory debugging turn a blind eye
2617 to it. Application code that doesn't use this new function will still
2618 leak as before, but their memory debugging output will announce it now
2619 rather than letting it slide.
2621 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2622 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2623 has a return value to indicate success or failure.
2626 *) Make it possible to replace the underlying "ERR" functions such that the
2627 global state (2 LHASH tables and 2 locks) is only used by the "default"
2628 implementation. This change also adds two functions to "get" and "set"
2629 the implementation prior to it being automatically set the first time
2630 any other ERR function takes place. Ie. an application can call "get",
2631 pass the return value to a module it has just loaded, and that module
2632 can call its own "set" function using that value. This means the
2633 module's "ERR" operations will use (and modify) the error state in the
2634 application and not in its own statically linked copy of OpenSSL code.
2637 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2638 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2639 the operation, and provides a more encapsulated way for external code
2640 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2641 to use these functions rather than manually incrementing the counts.
2643 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2646 *) Add EVP test program.
2649 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2652 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2653 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2654 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2655 These allow a CRL to be built without having to access X509_CRL fields
2656 directly. Modify 'ca' application to use new functions.
2659 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2660 bug workarounds. Rollback attack detection is a security feature.
2661 The problem will only arise on OpenSSL servers when TLSv1 is not
2662 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2663 Software authors not wanting to support TLSv1 will have special reasons
2664 for their choice and can explicitly enable this option.
2665 [Bodo Moeller, Lutz Jaenicke]
2667 *) Rationalise EVP so it can be extended: don't include a union of
2668 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2669 (similar to those existing for EVP_CIPHER_CTX).
2674 EVP_MD_CTX_init(&md); /* new function call */
2675 EVP_DigestInit(&md, EVP_sha1());
2676 EVP_DigestUpdate(&md, in, len);
2677 EVP_DigestFinal(&md, out, NULL);
2678 EVP_MD_CTX_cleanup(&md); /* new function call */
2682 *) Make DES key schedule conform to the usual scheme, as well as
2683 correcting its structure. This means that calls to DES functions
2684 now have to pass a pointer to a des_key_schedule instead of a
2685 plain des_key_schedule (which was actually always a pointer
2688 des_key_schedule ks;
2690 des_set_key_checked(..., &ks);
2691 des_ncbc_encrypt(..., &ks, ...);
2693 (Note that a later change renames 'des_...' into 'DES_...'.)
2696 *) Initial reduction of linker bloat: the use of some functions, such as
2697 PEM causes large amounts of unused functions to be linked in due to
2698 poor organisation. For example pem_all.c contains every PEM function
2699 which has a knock on effect of linking in large amounts of (unused)
2700 ASN1 code. Grouping together similar functions and splitting unrelated
2701 functions prevents this.
2704 *) Cleanup of EVP macros.
2707 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2708 correct _ecb suffix.
2711 *) Add initial OCSP responder support to ocsp application. The
2712 revocation information is handled using the text based index
2713 use by the ca application. The responder can either handle
2714 requests generated internally, supplied in files (for example
2715 via a CGI script) or using an internal minimal server.
2718 *) Add configuration choices to get zlib compression for TLS.
2721 *) Changes to Kerberos SSL for RFC 2712 compliance:
2722 1. Implemented real KerberosWrapper, instead of just using
2723 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2724 2. Implemented optional authenticator field of KerberosWrapper.
2726 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2727 and authenticator structs; see crypto/krb5/.
2729 Generalized Kerberos calls to support multiple Kerberos libraries.
2730 [Vern Staats <staatsvr@asc.hpc.mil>,
2731 Jeffrey Altman <jaltman@columbia.edu>
2732 via Richard Levitte]
2734 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2735 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2736 values for each of the key sizes rather than having just
2737 parameters (and 'speed' generating keys each time).
2740 *) Speed up EVP routines.
2743 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2744 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2745 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2746 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2748 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2749 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2750 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2753 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2755 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2758 *) Added the OS2-EMX target.
2759 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2761 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2762 to support NCONF routines in extension code. New function CONF_set_nconf()
2763 to allow functions which take an NCONF to also handle the old LHASH
2764 structure: this means that the old CONF compatible routines can be
2765 retained (in particular wrt extensions) without having to duplicate the
2766 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2769 *) Enhance the general user interface with mechanisms for inner control
2770 and with possibilities to have yes/no kind of prompts.
2773 *) Change all calls to low level digest routines in the library and
2774 applications to use EVP. Add missing calls to HMAC_cleanup() and
2775 don't assume HMAC_CTX can be copied using memcpy().
2776 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2778 *) Add the possibility to control engines through control names but with
2779 arbitrary arguments instead of just a string.
2780 Change the key loaders to take a UI_METHOD instead of a callback
2781 function pointer. NOTE: this breaks binary compatibility with earlier
2782 versions of OpenSSL [engine].
2783 Adapt the nCipher code for these new conditions and add a card insertion
2787 *) Enhance the general user interface with mechanisms to better support
2788 dialog box interfaces, application-defined prompts, the possibility
2789 to use defaults (for example default passwords from somewhere else)
2790 and interrupts/cancellations.
2793 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2794 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2797 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2798 tidy up some unnecessarily weird code in 'sk_new()').
2799 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2801 *) Change the key loading routines for ENGINEs to use the same kind
2802 callback (pem_password_cb) as all other routines that need this
2806 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2807 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2808 than this minimum value is recommended.
2811 *) New random seeder for OpenVMS, using the system process statistics
2812 that are easily reachable.
2815 *) Windows apparently can't transparently handle global
2816 variables defined in DLLs. Initialisations such as:
2818 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2820 wont compile. This is used by the any applications that need to
2821 declare their own ASN1 modules. This was fixed by adding the option
2822 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2823 needed for static libraries under Win32.
2826 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2827 setting of purpose and trust fields. New X509_STORE trust and
2828 purpose functions and tidy up setting in other SSL functions.
2831 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2832 structure. These are inherited by X509_STORE_CTX when it is
2833 initialised. This allows various defaults to be set in the
2834 X509_STORE structure (such as flags for CRL checking and custom
2835 purpose or trust settings) for functions which only use X509_STORE_CTX
2836 internally such as S/MIME.
2838 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2839 trust settings if they are not set in X509_STORE. This allows X509_STORE
2840 purposes and trust (in S/MIME for example) to override any set by default.
2842 Add command line options for CRL checking to smime, s_client and s_server
2846 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2847 are set then the CRL is looked up in the X509_STORE structure and
2848 its validity and signature checked, then if the certificate is found
2849 in the CRL the verify fails with a revoked error.
2851 Various new CRL related callbacks added to X509_STORE_CTX structure.
2853 Command line options added to 'verify' application to support this.
2855 This needs some additional work, such as being able to handle multiple
2856 CRLs with different times, extension based lookup (rather than just
2857 by subject name) and ultimately more complete V2 CRL extension
2861 *) Add a general user interface API (crypto/ui/). This is designed
2862 to replace things like des_read_password and friends (backward
2863 compatibility functions using this new API are provided).
2864 The purpose is to remove prompting functions from the DES code
2865 section as well as provide for prompting through dialog boxes in
2866 a window system and the like.
2869 *) Add "ex_data" support to ENGINE so implementations can add state at a
2870 per-structure level rather than having to store it globally.
2873 *) Make it possible for ENGINE structures to be copied when retrieved by
2874 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2875 This causes the "original" ENGINE structure to act like a template,
2876 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2877 operational state can be localised to each ENGINE structure, despite the
2878 fact they all share the same "methods". New ENGINE structures returned in
2879 this case have no functional references and the return value is the single
2880 structural reference. This matches the single structural reference returned
2881 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2885 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2886 needs to match any other type at all we need to manually clear the
2890 *) Changes to the "openssl engine" utility to include;
2891 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2892 about an ENGINE's available control commands.
2893 - executing control commands from command line arguments using the
2894 '-pre' and '-post' switches. '-post' is only used if '-t' is
2895 specified and the ENGINE is successfully initialised. The syntax for
2896 the individual commands are colon-separated, for example;
2897 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2900 *) New dynamic control command support for ENGINEs. ENGINEs can now
2901 declare their own commands (numbers), names (strings), descriptions,
2902 and input types for run-time discovery by calling applications. A
2903 subset of these commands are implicitly classed as "executable"
2904 depending on their input type, and only these can be invoked through
2905 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2906 can be based on user input, config files, etc). The distinction is
2907 that "executable" commands cannot return anything other than a boolean
2908 result and can only support numeric or string input, whereas some
2909 discoverable commands may only be for direct use through
2910 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2911 pointers, or other custom uses. The "executable" commands are to
2912 support parameterisations of ENGINE behaviour that can be
2913 unambiguously defined by ENGINEs and used consistently across any
2914 OpenSSL-based application. Commands have been added to all the
2915 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2916 control over shared-library paths without source code alterations.
2919 *) Changed all ENGINE implementations to dynamically allocate their
2920 ENGINEs rather than declaring them statically. Apart from this being
2921 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2922 this also allows the implementations to compile without using the
2923 internal engine_int.h header.
2926 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2927 'const' value. Any code that should be able to modify a RAND_METHOD
2928 should already have non-const pointers to it (ie. they should only
2929 modify their own ones).
2932 *) Made a variety of little tweaks to the ENGINE code.
2933 - "atalla" and "ubsec" string definitions were moved from header files
2934 to C code. "nuron" string definitions were placed in variables
2935 rather than hard-coded - allowing parameterisation of these values
2936 later on via ctrl() commands.
2937 - Removed unused "#if 0"'d code.
2938 - Fixed engine list iteration code so it uses ENGINE_free() to release
2939 structural references.
2940 - Constified the RAND_METHOD element of ENGINE structures.
2941 - Constified various get/set functions as appropriate and added
2942 missing functions (including a catch-all ENGINE_cpy that duplicates
2943 all ENGINE values onto a new ENGINE except reference counts/state).
2944 - Removed NULL parameter checks in get/set functions. Setting a method
2945 or function to NULL is a way of cancelling out a previously set
2946 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2947 and doesn't justify the extra error symbols and code.
2948 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2949 flags from engine_int.h to engine.h.
2950 - Changed prototypes for ENGINE handler functions (init(), finish(),
2951 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2954 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2955 to the algorithm using long division. The binary algorithm can be
2956 used only if the modulus is odd. On 32-bit systems, it is faster
2957 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2958 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2959 up to 450 bits. In 64-bit environments, the binary algorithm
2960 appears to be advantageous for much longer moduli; here we use it
2961 for moduli up to 2048 bits.
2964 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2965 could not support the combine flag in choice fields.
2968 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2969 extensions from a certificate request to the certificate.
2972 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2973 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2974 file: this allows the display of the certificate about to be
2975 signed to be customised, to allow certain fields to be included
2976 or excluded and extension details. The old system didn't display
2977 multicharacter strings properly, omitted fields not in the policy
2978 and couldn't display additional details such as extensions.
2981 *) Function EC_POINTs_mul for multiple scalar multiplication
2982 of an arbitrary number of elliptic curve points
2983 \sum scalars[i]*points[i],
2984 optionally including the generator defined for the EC_GROUP:
2985 scalar*generator + \sum scalars[i]*points[i].
2987 EC_POINT_mul is a simple wrapper function for the typical case
2988 that the point list has just one item (besides the optional
2992 *) First EC_METHODs for curves over GF(p):
2994 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2995 operations and provides various method functions that can also
2996 operate with faster implementations of modular arithmetic.
2998 EC_GFp_mont_method() reuses most functions that are part of
2999 EC_GFp_simple_method, but uses Montgomery arithmetic.
3001 [Bodo Moeller; point addition and point doubling
3002 implementation directly derived from source code provided by
3003 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3005 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3006 crypto/ec/ec_lib.c):
3008 Curves are EC_GROUP objects (with an optional group generator)
3009 based on EC_METHODs that are built into the library.
3011 Points are EC_POINT objects based on EC_GROUP objects.
3013 Most of the framework would be able to handle curves over arbitrary
3014 finite fields, but as there are no obvious types for fields other
3015 than GF(p), some functions are limited to that for now.
3018 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3019 that the file contains a complete HTTP response.
3022 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3023 change the def and num file printf format specifier from "%-40sXXX"
3024 to "%-39s XXX". The latter will always guarantee a space after the
3025 field while the former will cause them to run together if the field
3026 is 40 of more characters long.
3029 *) Constify the cipher and digest 'method' functions and structures
3030 and modify related functions to take constant EVP_MD and EVP_CIPHER
3034 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3035 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3038 *) Modify EVP_Digest*() routines so they now return values. Although the
3039 internal software routines can never fail additional hardware versions
3043 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3045 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3046 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3049 ERR_R_NESTED_ASN1_ERROR
3051 ERR_R_MISSING_ASN1_EOS
3052 were 4 .. 9, conflicting with
3053 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3055 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3056 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3058 Add new error code 'ERR_R_INTERNAL_ERROR'.
3061 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3065 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3066 sets the subject name for a new request or supersedes the
3067 subject name in a given request. Formats that can be parsed are
3068 'CN=Some Name, OU=myOU, C=IT'
3070 'CN=Some Name/OU=myOU/C=IT'.
3072 Add options '-batch' and '-verbose' to 'openssl req'.
3073 [Massimiliano Pala <madwolf@hackmasters.net>]
3075 *) Introduce the possibility to access global variables through
3076 functions on platform were that's the best way to handle exporting
3077 global variables in shared libraries. To enable this functionality,
3078 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3079 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3080 is normally done by Configure or something similar).
3082 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3083 in the source file (foo.c) like this:
3085 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3086 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3088 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3089 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3091 OPENSSL_DECLARE_GLOBAL(int,foo);
3092 #define foo OPENSSL_GLOBAL_REF(foo)
3093 OPENSSL_DECLARE_GLOBAL(double,bar);
3094 #define bar OPENSSL_GLOBAL_REF(bar)
3096 The #defines are very important, and therefore so is including the
3097 header file everywhere where the defined globals are used.
3099 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3100 of ASN.1 items, but that structure is a bit different.
3102 The largest change is in util/mkdef.pl which has been enhanced with
3103 better and easier to understand logic to choose which symbols should
3104 go into the Windows .def files as well as a number of fixes and code
3105 cleanup (among others, algorithm keywords are now sorted
3106 lexicographically to avoid constant rewrites).
3109 *) In BN_div() keep a copy of the sign of 'num' before writing the
3110 result to 'rm' because if rm==num the value will be overwritten
3111 and produce the wrong result if 'num' is negative: this caused
3112 problems with BN_mod() and BN_nnmod().
3115 *) Function OCSP_request_verify(). This checks the signature on an
3116 OCSP request and verifies the signer certificate. The signer
3117 certificate is just checked for a generic purpose and OCSP request
3121 *) Add OCSP_check_validity() function to check the validity of OCSP
3122 responses. OCSP responses are prepared in real time and may only
3123 be a few seconds old. Simply checking that the current time lies
3124 between thisUpdate and nextUpdate max reject otherwise valid responses
3125 caused by either OCSP responder or client clock inaccuracy. Instead
3126 we allow thisUpdate and nextUpdate to fall within a certain period of
3127 the current time. The age of the response can also optionally be
3128 checked. Two new options -validity_period and -status_age added to
3132 *) If signature or public key algorithm is unrecognized print out its
3133 OID rather that just UNKNOWN.
3136 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3137 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3138 ID to be generated from the issuer certificate alone which can then be
3139 passed to OCSP_id_issuer_cmp().
3142 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3143 ASN1 modules to export functions returning ASN1_ITEM pointers
3144 instead of the ASN1_ITEM structures themselves. This adds several
3145 new macros which allow the underlying ASN1 function/structure to
3146 be accessed transparently. As a result code should not use ASN1_ITEM
3147 references directly (such as &X509_it) but instead use the relevant
3148 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3149 use of the new ASN1 code on platforms where exporting structures
3150 is problematical (for example in shared libraries) but exporting
3151 functions returning pointers to structures is not.
3154 *) Add support for overriding the generation of SSL/TLS session IDs.
3155 These callbacks can be registered either in an SSL_CTX or per SSL.
3156 The purpose of this is to allow applications to control, if they wish,
3157 the arbitrary values chosen for use as session IDs, particularly as it
3158 can be useful for session caching in multiple-server environments. A
3159 command-line switch for testing this (and any client code that wishes
3160 to use such a feature) has been added to "s_server".
3161 [Geoff Thorpe, Lutz Jaenicke]
3163 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3164 of the form '#if defined(...) || defined(...) || ...' and
3165 '#if !defined(...) && !defined(...) && ...'. This also avoids
3166 the growing number of special cases it was previously handling.
3169 *) Make all configuration macros available for application by making
3170 sure they are available in opensslconf.h, by giving them names starting
3171 with "OPENSSL_" to avoid conflicts with other packages and by making
3172 sure e_os2.h will cover all platform-specific cases together with
3174 Additionally, it is now possible to define configuration/platform-
3175 specific names (called "system identities"). In the C code, these
3176 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3177 macro with the name beginning with "OPENSSL_SYS_", which is determined
3178 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3182 *) New option -set_serial to 'req' and 'x509' this allows the serial
3183 number to use to be specified on the command line. Previously self
3184 signed certificates were hard coded with serial number 0 and the
3185 CA options of 'x509' had to use a serial number in a file which was
3189 *) New options to 'ca' utility to support V2 CRL entry extensions.
3190 Currently CRL reason, invalidity date and hold instruction are
3191 supported. Add new CRL extensions to V3 code and some new objects.
3194 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3195 disable standard block padding (aka PKCS#5 padding) in the EVP
3196 API, which was previously mandatory. This means that the data is
3197 not padded in any way and so the total length much be a multiple
3198 of the block size, otherwise an error occurs.
3201 *) Initial (incomplete) OCSP SSL support.
3204 *) New function OCSP_parse_url(). This splits up a URL into its host,
3205 port and path components: primarily to parse OCSP URLs. New -url
3206 option to ocsp utility.
3209 *) New nonce behavior. The return value of OCSP_check_nonce() now
3210 reflects the various checks performed. Applications can decide
3211 whether to tolerate certain situations such as an absent nonce
3212 in a response when one was present in a request: the ocsp application
3213 just prints out a warning. New function OCSP_add1_basic_nonce()
3214 this is to allow responders to include a nonce in a response even if
3215 the request is nonce-less.
3218 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3219 skipped when using openssl x509 multiple times on a single input file,
3220 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3223 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3224 set string type: to handle setting ASN1_TIME structures. Fix ca
3225 utility to correctly initialize revocation date of CRLs.
3228 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3229 the clients preferred ciphersuites and rather use its own preferences.
3230 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3231 Internet Explorer by ensuring unchanged hash method during stepup.
3232 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3235 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3236 to aes and add a new 'exist' option to print out symbols that don't
3240 *) Additional options to ocsp utility to allow flags to be set and
3241 additional certificates supplied.
3244 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3245 OCSP client a number of certificate to only verify the response
3249 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3250 handle the new API. Currently only ECB, CBC modes supported. Add new
3253 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3254 Encryption Standard (AES) Ciphersuites for Transport Layer
3255 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3256 not enabled by default and were not part of the "ALL" ciphersuite
3257 alias because they were not yet official; they could be
3258 explicitly requested by specifying the "AESdraft" ciphersuite
3259 group alias. In the final release of OpenSSL 0.9.7, the group
3260 alias is called "AES" and is part of "ALL".)
3261 [Ben Laurie, Steve Henson, Bodo Moeller]
3263 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3264 request to response.
3267 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3268 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3269 extract information from a certificate request. OCSP_response_create()
3270 creates a response and optionally adds a basic response structure.
3271 OCSP_basic_add1_status() adds a complete single response to a basic
3272 response and returns the OCSP_SINGLERESP structure just added (to allow
3273 extensions to be included for example). OCSP_basic_add1_cert() adds a
3274 certificate to a basic response and OCSP_basic_sign() signs a basic
3275 response with various flags. New helper functions ASN1_TIME_check()
3276 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3277 (converts ASN1_TIME to GeneralizedTime).
3280 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3281 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3282 structure from a certificate. X509_pubkey_digest() digests the public_key
3283 contents: this is used in various key identifiers.
3286 *) Make sk_sort() tolerate a NULL argument.
3287 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3289 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3290 passed by the function are trusted implicitly. If any of them signed the
3291 response then it is assumed to be valid and is not verified.
3294 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3295 to data. This was previously part of the PKCS7 ASN1 code. This
3296 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3297 [Steve Henson, reported by Kenneth R. Robinette
3298 <support@securenetterm.com>]
3300 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3301 routines: without these tracing memory leaks is very painful.
3302 Fix leaks in PKCS12 and PKCS7 routines.
3305 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3306 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3307 effectively meant GeneralizedTime would never be used. Now it
3308 is initialised to -1 but X509_time_adj() now has to check the value
3309 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3310 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3311 [Steve Henson, reported by Kenneth R. Robinette
3312 <support@securenetterm.com>]
3314 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3315 result in a zero length in the ASN1_INTEGER structure which was
3316 not consistent with the structure when d2i_ASN1_INTEGER() was used
3317 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3318 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3319 where it did not print out a minus for negative ASN1_INTEGER.
3322 *) Add summary printout to ocsp utility. The various functions which
3323 convert status values to strings have been renamed to:
3324 OCSP_response_status_str(), OCSP_cert_status_str() and
3325 OCSP_crl_reason_str() and are no longer static. New options
3326 to verify nonce values and to disable verification. OCSP response
3327 printout format cleaned up.
3330 *) Add additional OCSP certificate checks. These are those specified
3331 in RFC2560. This consists of two separate checks: the CA of the
3332 certificate being checked must either be the OCSP signer certificate
3333 or the issuer of the OCSP signer certificate. In the latter case the
3334 OCSP signer certificate must contain the OCSP signing extended key
3335 usage. This check is performed by attempting to match the OCSP
3336 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3337 in the OCSP_CERTID structures of the response.
3340 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3341 and related routines. This uses the standard OpenSSL certificate
3342 verify routines to perform initial checks (just CA validity) and
3343 to obtain the certificate chain. Then additional checks will be
3344 performed on the chain. Currently the root CA is checked to see
3345 if it is explicitly trusted for OCSP signing. This is used to set
3346 a root CA as a global signing root: that is any certificate that
3347 chains to that CA is an acceptable OCSP signing certificate.
3350 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3351 extensions from a separate configuration file.
3352 As when reading extensions from the main configuration file,
3353 the '-extensions ...' option may be used for specifying the
3355 [Massimiliano Pala <madwolf@comune.modena.it>]
3357 *) New OCSP utility. Allows OCSP requests to be generated or
3358 read. The request can be sent to a responder and the output
3359 parsed, outputed or printed in text form. Not complete yet:
3360 still needs to check the OCSP response validity.
3363 *) New subcommands for 'openssl ca':
3364 'openssl ca -status <serial>' prints the status of the cert with
3365 the given serial number (according to the index file).
3366 'openssl ca -updatedb' updates the expiry status of certificates
3368 [Massimiliano Pala <madwolf@comune.modena.it>]
3370 *) New '-newreq-nodes' command option to CA.pl. This is like
3371 '-newreq', but calls 'openssl req' with the '-nodes' option
3372 so that the resulting key is not encrypted.
3373 [Damien Miller <djm@mindrot.org>]
3375 *) New configuration for the GNU Hurd.
3376 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3378 *) Initial code to implement OCSP basic response verify. This
3379 is currently incomplete. Currently just finds the signer's
3380 certificate and verifies the signature on the response.
3383 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3384 value of OPENSSLDIR. This is available via the new '-d' option
3385 to 'openssl version', and is also included in 'openssl version -a'.
3388 *) Allowing defining memory allocation callbacks that will be given
3389 file name and line number information in additional arguments
3390 (a const char* and an int). The basic functionality remains, as
3391 well as the original possibility to just replace malloc(),
3392 realloc() and free() by functions that do not know about these
3393 additional arguments. To register and find out the current
3394 settings for extended allocation functions, the following
3395 functions are provided:
3397 CRYPTO_set_mem_ex_functions
3398 CRYPTO_set_locked_mem_ex_functions
3399 CRYPTO_get_mem_ex_functions
3400 CRYPTO_get_locked_mem_ex_functions
3402 These work the same way as CRYPTO_set_mem_functions and friends.
3403 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3404 extended allocation function is enabled.
3405 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3406 a conventional allocation function is enabled.
3407 [Richard Levitte, Bodo Moeller]
3409 *) Finish off removing the remaining LHASH function pointer casts.
3410 There should no longer be any prototype-casting required when using
3411 the LHASH abstraction, and any casts that remain are "bugs". See
3412 the callback types and macros at the head of lhash.h for details
3413 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3416 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3417 If /dev/[u]random devices are not available or do not return enough
3418 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3420 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3421 /etc/entropy will be queried once each in this sequence, quering stops
3422 when enough entropy was collected without querying more sockets.
3425 *) Change the Unix RAND_poll() variant to be able to poll several
3426 random devices, as specified by DEVRANDOM, until a sufficient amount
3427 of data has been collected. We spend at most 10 ms on each file
3428 (select timeout) and read in non-blocking mode. DEVRANDOM now
3429 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3430 (previously it was just the string "/dev/urandom"), so on typical
3431 platforms the 10 ms delay will never occur.
3432 Also separate out the Unix variant to its own file, rand_unix.c.
3433 For VMS, there's a currently-empty rand_vms.c.
3436 *) Move OCSP client related routines to ocsp_cl.c. These
3437 provide utility functions which an application needing
3438 to issue a request to an OCSP responder and analyse the
3439 response will typically need: as opposed to those which an
3440 OCSP responder itself would need which will be added later.
3442 OCSP_request_sign() signs an OCSP request with an API similar
3443 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3444 response. OCSP_response_get1_basic() extracts basic response
3445 from response. OCSP_resp_find_status(): finds and extracts status
3446 information from an OCSP_CERTID structure (which will be created
3447 when the request structure is built). These are built from lower
3448 level functions which work on OCSP_SINGLERESP structures but
3449 wont normally be used unless the application wishes to examine
3450 extensions in the OCSP response for example.
3452 Replace nonce routines with a pair of functions.
3453 OCSP_request_add1_nonce() adds a nonce value and optionally
3454 generates a random value. OCSP_check_nonce() checks the
3455 validity of the nonce in an OCSP response.
3458 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3459 This doesn't copy the supplied OCSP_CERTID and avoids the
3460 need to free up the newly created id. Change return type
3461 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3462 This can then be used to add extensions to the request.
3463 Deleted OCSP_request_new(), since most of its functionality
3464 is now in OCSP_REQUEST_new() (and the case insensitive name
3465 clash) apart from the ability to set the request name which
3466 will be added elsewhere.
3469 *) Update OCSP API. Remove obsolete extensions argument from
3470 various functions. Extensions are now handled using the new
3471 OCSP extension code. New simple OCSP HTTP function which
3472 can be used to send requests and parse the response.
3475 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3476 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3477 uses the special reorder version of SET OF to sort the attributes
3478 and reorder them to match the encoded order. This resolves a long
3479 standing problem: a verify on a PKCS7 structure just after signing
3480 it used to fail because the attribute order did not match the
3481 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3482 it uses the received order. This is necessary to tolerate some broken
3483 software that does not order SET OF. This is handled by encoding
3484 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3485 to produce the required SET OF.
3488 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3489 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3490 files to get correct declarations of the ASN.1 item variables.
3493 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3494 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3495 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3496 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3497 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3498 ASN1_ITEM and no wrapper functions.
3501 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3502 replace the old function pointer based I/O routines. Change most of
3503 the *_d2i_bio() and *_d2i_fp() functions to use these.
3506 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3507 lines, recognice more "algorithms" that can be deselected, and make
3508 it complain about algorithm deselection that isn't recognised.
3511 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3512 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3513 to use new functions. Add NO_ASN1_OLD which can be set to remove
3514 some old style ASN1 functions: this can be used to determine if old
3515 code will still work when these eventually go away.
3518 *) New extension functions for OCSP structures, these follow the
3519 same conventions as certificates and CRLs.
3522 *) New function X509V3_add1_i2d(). This automatically encodes and
3523 adds an extension. Its behaviour can be customised with various
3524 flags to append, replace or delete. Various wrappers added for
3525 certifcates and CRLs.
3528 *) Fix to avoid calling the underlying ASN1 print routine when
3529 an extension cannot be parsed. Correct a typo in the
3530 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3533 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3534 entries for variables.
3537 *) Add functionality to apps/openssl.c for detecting locking
3538 problems: As the program is single-threaded, all we have
3539 to do is register a locking callback using an array for
3540 storing which locks are currently held by the program.
3543 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3544 SSL_get_ex_data_X509_STORE_idx(), which is used in
3545 ssl_verify_cert_chain() and thus can be called at any time
3546 during TLS/SSL handshakes so that thread-safety is essential.
3547 Unfortunately, the ex_data design is not at all suited
3548 for multi-threaded use, so it probably should be abolished.
3551 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3552 [Broadcom, tweaked and integrated by Geoff Thorpe]
3554 *) Move common extension printing code to new function
3555 X509V3_print_extensions(). Reorganise OCSP print routines and
3556 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3559 *) New function X509_signature_print() to remove duplication in some
3563 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3564 set (this was treated exactly the same as SET OF previously). This
3565 is used to reorder the STACK representing the structure to match the
3566 encoding. This will be used to get round a problem where a PKCS7
3567 structure which was signed could not be verified because the STACK
3568 order did not reflect the encoded order.
3571 *) Reimplement the OCSP ASN1 module using the new code.
3574 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3575 for its ASN1 operations. The old style function pointers still exist
3576 for now but they will eventually go away.
3579 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3580 completely replaces the old ASN1 functionality with a table driven
3581 encoder and decoder which interprets an ASN1_ITEM structure describing
3582 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3583 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3584 has also been converted to the new form.
3587 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3588 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3589 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3590 for negative moduli.
3593 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3594 of not touching the result's sign bit.
3597 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3601 *) Changed the LHASH code to use prototypes for callbacks, and created
3602 macros to declare and implement thin (optionally static) functions
3603 that provide type-safety and avoid function pointer casting for the
3604 type-specific callbacks.
3607 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3609 [Veers Staats <staatsvr@asc.hpc.mil>,
3610 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3612 *) Reformat the FAQ so the different questions and answers can be divided
3613 in sections depending on the subject.
3616 *) Have the zlib compression code load ZLIB.DLL dynamically under
3620 *) New function BN_mod_sqrt for computing square roots modulo a prime
3621 (using the probabilistic Tonelli-Shanks algorithm unless
3622 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3623 be handled deterministically).
3624 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3626 *) Make BN_mod_inverse faster by explicitly handling small quotients
3627 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3628 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3631 *) New function BN_kronecker.
3634 *) Fix BN_gcd so that it works on negative inputs; the result is
3635 positive unless both parameters are zero.
3636 Previously something reasonably close to an infinite loop was
3637 possible because numbers could be growing instead of shrinking
3638 in the implementation of Euclid's algorithm.
3641 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3642 sign of the number in question.
3644 Fix BN_is_word(a,w) to work correctly for w == 0.
3646 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3647 because its test if the absolute value of 'a' equals 'w'.
3648 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3649 it exists mostly for use in the implementations of BN_is_zero(),
3650 BN_is_one(), and BN_is_word().
3653 *) New function BN_swap.
3656 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3657 the exponentiation functions are more likely to produce reasonable
3658 results on negative inputs.
3661 *) Change BN_mod_mul so that the result is always non-negative.
3662 Previously, it could be negative if one of the factors was negative;
3663 I don't think anyone really wanted that behaviour.
3666 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3667 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3668 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3669 and add new functions:
3678 BN_mod_lshift1_quick
3682 These functions always generate non-negative results.
3684 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3685 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3687 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3688 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3689 be reduced modulo m.
3690 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3693 The following entry accidentily appeared in the CHANGES file
3694 distributed with OpenSSL 0.9.7. The modifications described in
3695 it do *not* apply to OpenSSL 0.9.7.
3697 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3698 was actually never needed) and in BN_mul(). The removal in BN_mul()
3699 required a small change in bn_mul_part_recursive() and the addition
3700 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3701 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3702 bn_sub_words() and bn_add_words() except they take arrays with
3707 *) In 'openssl passwd', verify passwords read from the terminal
3708 unless the '-salt' option is used (which usually means that
3709 verification would just waste user's time since the resulting
3710 hash is going to be compared with some given password hash)
3711 or the new '-noverify' option is used.
3713 This is an incompatible change, but it does not affect
3714 non-interactive use of 'openssl passwd' (passwords on the command
3715 line, '-stdin' option, '-in ...' option) and thus should not
3719 *) Remove all references to RSAref, since there's no more need for it.
3722 *) Make DSO load along a path given through an environment variable
3723 (SHLIB_PATH) with shl_load().
3726 *) Constify the ENGINE code as a result of BIGNUM constification.
3727 Also constify the RSA code and most things related to it. In a
3728 few places, most notable in the depth of the ASN.1 code, ugly
3729 casts back to non-const were required (to be solved at a later
3733 *) Make it so the openssl application has all engines loaded by default.
3736 *) Constify the BIGNUM routines a little more.
3739 *) Add the following functions:
3741 ENGINE_load_cswift()
3743 ENGINE_load_atalla()
3745 ENGINE_load_builtin_engines()
3747 That way, an application can itself choose if external engines that
3748 are built-in in OpenSSL shall ever be used or not. The benefit is
3749 that applications won't have to be linked with libdl or other dso
3750 libraries unless it's really needed.
3752 Changed 'openssl engine' to load all engines on demand.
3753 Changed the engine header files to avoid the duplication of some
3754 declarations (they differed!).
3757 *) 'openssl engine' can now list capabilities.
3760 *) Better error reporting in 'openssl engine'.
3763 *) Never call load_dh_param(NULL) in s_server.
3766 *) Add engine application. It can currently list engines by name and
3767 identity, and test if they are actually available.
3770 *) Improve RPM specification file by forcing symbolic linking and making
3771 sure the installed documentation is also owned by root.root.
3772 [Damien Miller <djm@mindrot.org>]
3774 *) Give the OpenSSL applications more possibilities to make use of
3775 keys (public as well as private) handled by engines.
3778 *) Add OCSP code that comes from CertCo.
3781 *) Add VMS support for the Rijndael code.
3784 *) Added untested support for Nuron crypto accelerator.
3787 *) Add support for external cryptographic devices. This code was
3788 previously distributed separately as the "engine" branch.
3789 [Geoff Thorpe, Richard Levitte]
3791 *) Rework the filename-translation in the DSO code. It is now possible to
3792 have far greater control over how a "name" is turned into a filename
3793 depending on the operating environment and any oddities about the
3794 different shared library filenames on each system.
3797 *) Support threads on FreeBSD-elf in Configure.
3800 *) Fix for SHA1 assembly problem with MASM: it produces
3801 warnings about corrupt line number information when assembling
3802 with debugging information. This is caused by the overlapping
3804 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3807 NCONF_get_number() has no error checking at all. As a replacement,
3808 NCONF_get_number_e() is defined (_e for "error checking") and is
3809 promoted strongly. The old NCONF_get_number is kept around for
3810 binary backward compatibility.
3811 Make it possible for methods to load from something other than a BIO,
3812 by providing a function pointer that is given a name instead of a BIO.
3813 For example, this could be used to load configuration data from an
3817 *) Fix for non blocking accept BIOs. Added new I/O special reason
3818 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3819 with non blocking I/O was not possible because no retry code was
3820 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3824 *) Added the beginnings of Rijndael support.
3827 *) Fix for bug in DirectoryString mask setting. Add support for
3828 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3829 to allow certificate printing to more controllable, additional
3830 'certopt' option to 'x509' to allow new printing options to be
3834 *) Clean old EAY MD5 hack from e_os.h.
3837 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3839 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3840 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3841 [Joe Orton, Steve Henson]
3843 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3845 *) Fix additional bug revealed by the NISCC test suite:
3847 Stop bug triggering large recursion when presented with
3848 certain ASN.1 tags (CVE-2003-0851)
3851 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3853 *) Fix various bugs revealed by running the NISCC test suite:
3855 Stop out of bounds reads in the ASN1 code when presented with
3856 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3858 If verify callback ignores invalid public key errors don't try to check
3859 certificate signature with the NULL public key.
3863 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3864 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3868 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3869 extra data after the compression methods not only for TLS 1.0
3870 but also for SSL 3.0 (as required by the specification).
3871 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3873 *) Change X509_certificate_type() to mark the key as exported/exportable
3874 when it's 512 *bits* long, not 512 bytes.
3877 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3879 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3880 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3881 a protocol version number mismatch like a decryption error
3882 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3885 *) Turn on RSA blinding by default in the default implementation
3886 to avoid a timing attack. Applications that don't want it can call
3887 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3888 They would be ill-advised to do so in most cases.
3889 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3891 *) Change RSA blinding code so that it works when the PRNG is not
3892 seeded (in this case, the secret RSA exponent is abused as
3893 an unpredictable seed -- if it is not unpredictable, there
3894 is no point in blinding anyway). Make RSA blinding thread-safe
3895 by remembering the creator's thread ID in rsa->blinding and
3896 having all other threads use local one-time blinding factors
3897 (this requires more computation than sharing rsa->blinding, but
3898 avoids excessive locking; and if an RSA object is not shared
3899 between threads, blinding will still be very fast).
3902 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3904 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3905 via timing by performing a MAC computation even if incorrrect
3906 block cipher padding has been found. This is a countermeasure
3907 against active attacks where the attacker has to distinguish
3908 between bad padding and a MAC verification error. (CVE-2003-0078)
3910 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3911 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3912 Martin Vuagnoux (EPFL, Ilion)]
3914 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3916 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3917 memory from it's contents. This is done with a counter that will
3918 place alternating values in each byte. This can be used to solve
3919 two issues: 1) the removal of calls to memset() by highly optimizing
3920 compilers, and 2) cleansing with other values than 0, since those can
3921 be read through on certain media, for example a swap space on disk.
3924 *) Bugfix: client side session caching did not work with external caching,
3925 because the session->cipher setting was not restored when reloading
3926 from the external cache. This problem was masked, when
3927 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3928 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3931 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3932 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3933 [Zeev Lieber <zeev-l@yahoo.com>]
3935 *) Undo an undocumented change introduced in 0.9.6e which caused
3936 repeated calls to OpenSSL_add_all_ciphers() and
3937 OpenSSL_add_all_digests() to be ignored, even after calling
3941 *) Change the default configuration reader to deal with last line not
3942 being properly terminated.
3945 *) Change X509_NAME_cmp() so it applies the special rules on handling
3946 DN values that are of type PrintableString, as well as RDNs of type
3947 emailAddress where the value has the type ia5String.
3948 [stefank@valicert.com via Richard Levitte]
3950 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3951 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3952 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3953 the bitwise-OR of the two for use by the majority of applications
3954 wanting this behaviour, and update the docs. The documented
3955 behaviour and actual behaviour were inconsistent and had been
3956 changing anyway, so this is more a bug-fix than a behavioural
3958 [Geoff Thorpe, diagnosed by Nadav Har'El]
3960 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3961 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3964 *) Fix initialization code race conditions in
3965 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3966 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3967 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3968 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3969 ssl2_get_cipher_by_char(),
3970 ssl3_get_cipher_by_char().
3971 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3973 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3974 the cached sessions are flushed, as the remove_cb() might use ex_data
3975 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3976 (see [openssl.org #212]).
3977 [Geoff Thorpe, Lutz Jaenicke]
3979 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3980 length, instead of the encoding length to d2i_ASN1_OBJECT.
3983 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3985 *) [In 0.9.6g-engine release:]
3986 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3987 [Lynn Gazis <lgazis@rainbow.com>]
3989 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3991 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3992 and get fix the header length calculation.
3993 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3994 Alon Kantor <alonk@checkpoint.com> (and others),
3997 *) Use proper error handling instead of 'assertions' in buffer
3998 overflow checks added in 0.9.6e. This prevents DoS (the
3999 assertions could call abort()).
4000 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4002 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4004 *) Add various sanity checks to asn1_get_length() to reject
4005 the ASN1 length bytes if they exceed sizeof(long), will appear
4006 negative or the content length exceeds the length of the
4008 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4010 *) Fix cipher selection routines: ciphers without encryption had no flags
4011 for the cipher strength set and where therefore not handled correctly
4012 by the selection routines (PR #130).
4015 *) Fix EVP_dsa_sha macro.
4019 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4020 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4021 that was added in OpenSSL 0.9.6d.
4023 As the countermeasure turned out to be incompatible with some
4024 broken SSL implementations, the new option is part of SSL_OP_ALL.
4025 SSL_OP_ALL is usually employed when compatibility with weird SSL
4026 implementations is desired (e.g. '-bugs' option to 's_client' and
4027 's_server'), so the new option is automatically set in many
4031 *) Changes in security patch:
4033 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4034 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4035 Air Force Materiel Command, USAF, under agreement number
4038 *) Add various sanity checks to asn1_get_length() to reject
4039 the ASN1 length bytes if they exceed sizeof(long), will appear
4040 negative or the content length exceeds the length of the
4041 supplied buffer. (CVE-2002-0659)
4042 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4044 *) Assertions for various potential buffer overflows, not known to
4046 [Ben Laurie (CHATS)]
4048 *) Various temporary buffers to hold ASCII versions of integers were
4049 too small for 64 bit platforms. (CVE-2002-0655)
4050 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4052 *) Remote buffer overflow in SSL3 protocol - an attacker could
4053 supply an oversized session ID to a client. (CVE-2002-0656)
4054 [Ben Laurie (CHATS)]
4056 *) Remote buffer overflow in SSL2 protocol - an attacker could
4057 supply an oversized client master key. (CVE-2002-0656)
4058 [Ben Laurie (CHATS)]
4060 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4062 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4063 encoded as NULL) with id-dsa-with-sha1.
4064 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4066 *) Check various X509_...() return values in apps/req.c.
4067 [Nils Larsch <nla@trustcenter.de>]
4069 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4070 an end-of-file condition would erronously be flagged, when the CRLF
4071 was just at the end of a processed block. The bug was discovered when
4072 processing data through a buffering memory BIO handing the data to a
4073 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4074 <ptsekov@syntrex.com> and Nedelcho Stanev.
4077 *) Implement a countermeasure against a vulnerability recently found
4078 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4079 before application data chunks to avoid the use of known IVs
4080 with data potentially chosen by the attacker.
4083 *) Fix length checks in ssl3_get_client_hello().
4086 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4087 to prevent ssl3_read_internal() from incorrectly assuming that
4088 ssl3_read_bytes() found application data while handshake
4089 processing was enabled when in fact s->s3->in_read_app_data was
4090 merely automatically cleared during the initial handshake.
4091 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4093 *) Fix object definitions for Private and Enterprise: they were not
4094 recognized in their shortname (=lowercase) representation. Extend
4095 obj_dat.pl to issue an error when using undefined keywords instead
4096 of silently ignoring the problem (Svenning Sorensen
4097 <sss@sss.dnsalias.net>).
4100 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4101 generators, i.e. generators other than 2 and 5. (Previously, the
4102 code did not properly initialise the 'add' and 'rem' values to
4103 BN_generate_prime().)
4105 In the new general case, we do not insist that 'generator' is
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