5 This is a high-level summary of the most important changes.
6 For a full list of changes, see the git commit log; for example,
7 https://github.com/openssl/openssl/commits/ and pick the appropriate
10 Changes between 1.1.0h and 1.1.1 [xx XXX xxxx]
12 *) Modified the random device based seed sources to keep the relevant
13 file descriptors open rather than reopening them on each access.
14 This allows such sources to operate in a chroot() jail without
15 the associated device nodes being available. This behaviour can be
16 controlled using RAND_keep_random_devices_open().
19 *) Numerous side-channel attack mitigations have been applied. This may have
20 performance impacts for some algorithms for the benefit of improved
21 security. Specific changes are noted in this change log by their respective
25 *) AIX shared library support overhaul. Switch to AIX "natural" way of
26 handling shared libraries, which means collecting shared objects of
27 different versions and bitnesses in one common archive. This allows to
28 mitigate conflict between 1.0 and 1.1 side-by-side installations. It
29 doesn't affect the way 3rd party applications are linked, only how
30 multi-version installation is managed.
33 *) Make ec_group_do_inverse_ord() more robust and available to other
34 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA
35 mitigations are applied to the fallback BN_mod_inverse().
36 When using this function rather than BN_mod_inverse() directly, new
37 EC cryptosystem implementations are then safer-by-default.
40 *) Add coordinate blinding for EC_POINT and implement projective
41 coordinate blinding for generic prime curves as a countermeasure to
42 chosen point SCA attacks.
43 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley]
45 *) Add blinding to ECDSA and DSA signatures to protect against side channel
46 attacks discovered by Keegan Ryan (NCC Group).
49 *) Enforce checking in the pkeyutl command line app to ensure that the input
50 length does not exceed the maximum supported digest length when performing
51 a sign, verify or verifyrecover operation.
54 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking
55 I/O in combination with something like select() or poll() will hang. This
56 can be turned off again using SSL_CTX_clear_mode().
57 Many applications do not properly handle non-application data records, and
58 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works
59 around the problems in those applications, but can also break some.
60 It's recommended to read the manpages about SSL_read(), SSL_write(),
61 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and
62 SSL_CTX_set_read_ahead() again.
65 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we
66 now allow empty (zero character) pass phrases.
69 *) Apply blinding to binary field modular inversion and remove patent
70 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation.
73 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for
74 binary and prime elliptic curves.
77 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for
78 constant time fixed point multiplication.
81 *) Revise elliptic curve scalar multiplication with timing attack
82 defenses: ec_wNAF_mul redirects to a constant time implementation
83 when computing fixed point and variable point multiplication (which
84 in OpenSSL are mostly used with secret scalars in keygen, sign,
85 ECDH derive operations).
86 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García,
89 *) Updated CONTRIBUTING
92 *) Updated DRBG / RAND to request nonce and additional low entropy
93 randomness from the system.
96 *) Updated 'openssl rehash' to use OpenSSL consistent default.
99 *) Moved the load of the ssl_conf module to libcrypto, which helps
100 loading engines that libssl uses before libssl is initialised.
103 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA
106 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases.
107 [Ingo Schwarze, Rich Salz]
109 *) Added output of accepting IP address and port for 'openssl s_server'
112 *) Added a new API for TLSv1.3 ciphersuites:
113 SSL_CTX_set_ciphersuites()
114 SSL_set_ciphersuites()
117 *) Memory allocation failures consistenly add an error to the error
121 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values
122 in libcrypto when run as setuid/setgid.
125 *) Load any config file by default when libssl is used.
128 *) Added new public header file <openssl/rand_drbg.h> and documentation
129 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview.
130 [Matthias St. Pierre]
132 *) QNX support removed (cannot find contributors to get their approval
133 for the license change).
136 *) TLSv1.3 replay protection for early data has been implemented. See the
137 SSL_read_early_data() man page for further details.
140 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite
141 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and
142 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3.
143 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration
144 would otherwise inadvertently disable all TLSv1.3 ciphersuites the
145 configuration has been separated out. See the ciphers man page or the
146 SSL_CTX_set_ciphersuites() man page for more information.
149 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running
150 in responder mode now supports the new "-multi" option, which
151 spawns the specified number of child processes to handle OCSP
152 requests. The "-timeout" option now also limits the OCSP
153 responder's patience to wait to receive the full client request
154 on a newly accepted connection. Child processes are respawned
155 as needed, and the CA index file is automatically reloaded
156 when changed. This makes it possible to run the "ocsp" responder
157 as a long-running service, making the OpenSSL CA somewhat more
158 feature-complete. In this mode, most diagnostic messages logged
159 after entering the event loop are logged via syslog(3) rather than
163 *) Added support for X448 and Ed448. Heavily based on original work by
167 *) Extend OSSL_STORE with capabilities to search and to narrow the set of
168 objects loaded. This adds the functions OSSL_STORE_expect() and
169 OSSL_STORE_find() as well as needed tools to construct searches and
170 get the search data out of them.
173 *) Support for TLSv1.3 added. Note that users upgrading from an earlier
174 version of OpenSSL should review their configuration settings to ensure
175 that they are still appropriate for TLSv1.3. For further information see:
176 https://www.openssl.org/blog/blog/2018/02/08/tlsv1.3/
178 NOTE: In this pre-release of OpenSSL a draft version of the
179 TLSv1.3 standard has been implemented. Implementations of different draft
180 versions of the standard do not inter-operate, and this version will not
181 inter-operate with an implementation of the final standard when it is
182 eventually published. Different pre-release versions may implement
183 different versions of the draft. The final version of OpenSSL 1.1.1 will
184 implement the final version of the standard.
185 TODO(TLS1.3): Remove the above note before final release
188 *) Grand redesign of the OpenSSL random generator
190 The default RAND method now utilizes an AES-CTR DRBG according to
191 NIST standard SP 800-90Ar1. The new random generator is essentially
192 a port of the default random generator from the OpenSSL FIPS 2.0
193 object module. It is a hybrid deterministic random bit generator
194 using an AES-CTR bit stream and which seeds and reseeds itself
195 automatically using trusted system entropy sources.
197 Some of its new features are:
198 o Support for multiple DRBG instances with seed chaining.
199 o Add a public DRBG instance for the default RAND method.
200 o Add a dedicated DRBG instance for generating long term private keys.
201 o Make the DRBG instances fork-safe.
202 o Keep all global DRBG instances on the secure heap if it is enabled.
203 o Add a DRBG instance to every SSL instance for lock free operation
204 and to increase unpredictability.
205 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre]
207 *) Changed Configure so it only says what it does and doesn't dump
208 so much data. Instead, ./configdata.pm should be used as a script
209 to display all sorts of configuration data.
212 *) Added processing of "make variables" to Configure.
215 *) Added SHA512/224 and SHA512/256 algorithm support.
218 *) The last traces of Netware support, first removed in 1.1.0, have
222 *) Get rid of Makefile.shared, and in the process, make the processing
223 of certain files (rc.obj, or the .def/.map/.opt files produced from
224 the ordinal files) more visible and hopefully easier to trace and
225 debug (or make silent).
228 *) Make it possible to have environment variable assignments as
229 arguments to config / Configure.
232 *) Add multi-prime RSA (RFC 8017) support.
235 *) Add SM3 implemented according to GB/T 32905-2016
236 [ Jack Lloyd <jack.lloyd@ribose.com>,
237 Ronald Tse <ronald.tse@ribose.com>,
238 Erick Borsboom <erick.borsboom@ribose.com> ]
240 *) Add 'Maximum Fragment Length' TLS extension negotiation and support
241 as documented in RFC6066.
242 Based on a patch from Tomasz Moń
243 [Filipe Raimundo da Silva]
245 *) Add SM4 implemented according to GB/T 32907-2016.
246 [ Jack Lloyd <jack.lloyd@ribose.com>,
247 Ronald Tse <ronald.tse@ribose.com>,
248 Erick Borsboom <erick.borsboom@ribose.com> ]
250 *) Reimplement -newreq-nodes and ERR_error_string_n; the
251 original author does not agree with the license change.
254 *) Add ARIA AEAD TLS support.
257 *) Some macro definitions to support VS6 have been removed. Visual
258 Studio 6 has not worked since 1.1.0
261 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark
262 without clearing the errors.
265 *) Add "atfork" functions. If building on a system that without
266 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application
267 requirements. The RAND facility now uses/requires this.
273 *) The UI API becomes a permanent and integral part of libcrypto, i.e.
274 not possible to disable entirely. However, it's still possible to
275 disable the console reading UI method, UI_OpenSSL() (use UI_null()
278 To disable, configure with 'no-ui-console'. 'no-ui' is still
279 possible to use as an alias. Check at compile time with the
280 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still
281 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE.
284 *) Add a STORE module, which implements a uniform and URI based reader of
285 stores that can contain keys, certificates, CRLs and numerous other
286 objects. The main API is loosely based on a few stdio functions,
287 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof,
288 OSSL_STORE_error and OSSL_STORE_close.
289 The implementation uses backends called "loaders" to implement arbitrary
290 URI schemes. There is one built in "loader" for the 'file' scheme.
293 *) Add devcrypto engine. This has been implemented against cryptodev-linux,
294 then adjusted to work on FreeBSD 8.4 as well.
295 Enable by configuring with 'enable-devcryptoeng'. This is done by default
296 on BSD implementations, as cryptodev.h is assumed to exist on all of them.
299 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects
300 util/mkerr.pl, which is adapted to allow those prefixes, leading to
301 error code calls like this:
303 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER);
305 With this change, we claim the namespaces OSSL and OPENSSL in a manner
306 that can be encoded in C. For the foreseeable future, this will only
308 [Richard Levitte and Tim Hudson]
310 *) Removed BSD cryptodev engine.
313 *) Add a build target 'build_all_generated', to build all generated files
314 and only that. This can be used to prepare everything that requires
315 things like perl for a system that lacks perl and then move everything
316 to that system and do the rest of the build there.
319 *) In the UI interface, make it possible to duplicate the user data. This
320 can be used by engines that need to retain the data for a longer time
321 than just the call where this user data is passed.
324 *) Ignore the '-named_curve auto' value for compatibility of applications
326 [Tomas Mraz <tmraz@fedoraproject.org>]
328 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2
329 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such
330 alerts across multiple records (some of which could be empty). In practice
331 it make no sense to send an empty alert record, or to fragment one. TLSv1.3
332 prohibts this altogether and other libraries (BoringSSL, NSS) do not
333 support this at all. Supporting it adds significant complexity to the
334 record layer, and its removal is unlikely to cause inter-operability
338 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed
339 with Z. These are meant to replace LONG and ZLONG and to be size safe.
340 The use of LONG and ZLONG is discouraged and scheduled for deprecation
344 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string,
345 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t.
346 [Richard Levitte, Andy Polyakov]
348 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine()
352 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
353 platform rather than 'mingw'.
356 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return
357 success if they are asked to add an object which already exists
358 in the store. This change cascades to other functions which load
359 certificates and CRLs.
362 *) x86_64 assembly pack: annotate code with DWARF CFI directives to
363 facilitate stack unwinding even from assembly subroutines.
366 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN.
367 Also remove OPENSSL_GLOBAL entirely, as it became a no-op.
370 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
371 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
372 which is the minimum version we support.
375 *) Certificate time validation (X509_cmp_time) enforces stricter
376 compliance with RFC 5280. Fractional seconds and timezone offsets
377 are no longer allowed.
380 *) Add support for ARIA
383 *) s_client will now send the Server Name Indication (SNI) extension by
384 default unless the new "-noservername" option is used. The server name is
385 based on the host provided to the "-connect" option unless overridden by
389 *) Add support for SipHash
392 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
393 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
394 prevent issues where no progress is being made and the peer continually
395 sends unrecognised record types, using up resources processing them.
398 *) 'openssl passwd' can now produce SHA256 and SHA512 based output,
399 using the algorithm defined in
400 https://www.akkadia.org/drepper/SHA-crypt.txt
403 *) Heartbeat support has been removed; the ABI is changed for now.
404 [Richard Levitte, Rich Salz]
406 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
409 *) The RSA "null" method, which was partially supported to avoid patent
410 issues, has been replaced to always returns NULL.
414 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx]
416 *) Fixed a text canonicalisation bug in CMS
418 Where a CMS detached signature is used with text content the text goes
419 through a canonicalisation process first prior to signing or verifying a
420 signature. This process strips trailing space at the end of lines, converts
421 line terminators to CRLF and removes additional trailing line terminators
422 at the end of a file. A bug in the canonicalisation process meant that
423 some characters, such as form-feed, were incorrectly treated as whitespace
424 and removed. This is contrary to the specification (RFC5485). This fix
425 could mean that detached text data signed with an earlier version of
426 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data
427 signed with a fixed OpenSSL may fail to verify with an earlier version of
428 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data
429 and use the "-binary" flag (for the "cms" command line application) or set
430 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()).
433 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
435 *) Constructed ASN.1 types with a recursive definition could exceed the stack
437 Constructed ASN.1 types with a recursive definition (such as can be found
438 in PKCS7) could eventually exceed the stack given malicious input with
439 excessive recursion. This could result in a Denial Of Service attack. There
440 are no such structures used within SSL/TLS that come from untrusted sources
441 so this is considered safe.
443 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
448 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
450 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
451 effectively reduced to only comparing the least significant bit of each
452 byte. This allows an attacker to forge messages that would be considered as
453 authenticated in an amount of tries lower than that guaranteed by the
454 security claims of the scheme. The module can only be compiled by the
455 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
457 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
462 *) Add a build target 'build_all_generated', to build all generated files
463 and only that. This can be used to prepare everything that requires
464 things like perl for a system that lacks perl and then move everything
465 to that system and do the rest of the build there.
468 *) Backport SSL_OP_NO_RENGOTIATION
470 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
471 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
472 changes this is no longer possible in 1.1.0. Therefore the new
473 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
474 1.1.0 to provide equivalent functionality.
476 Note that if an application built against 1.1.0h headers (or above) is run
477 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
478 accepted but nothing will happen, i.e. renegotiation will not be prevented.
481 *) Removed the OS390-Unix config target. It relied on a script that doesn't
485 *) rsaz_1024_mul_avx2 overflow bug on x86_64
487 There is an overflow bug in the AVX2 Montgomery multiplication procedure
488 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
489 Analysis suggests that attacks against RSA and DSA as a result of this
490 defect would be very difficult to perform and are not believed likely.
491 Attacks against DH1024 are considered just feasible, because most of the
492 work necessary to deduce information about a private key may be performed
493 offline. The amount of resources required for such an attack would be
494 significant. However, for an attack on TLS to be meaningful, the server
495 would have to share the DH1024 private key among multiple clients, which is
496 no longer an option since CVE-2016-0701.
498 This only affects processors that support the AVX2 but not ADX extensions
499 like Intel Haswell (4th generation).
501 This issue was reported to OpenSSL by David Benjamin (Google). The issue
502 was originally found via the OSS-Fuzz project.
506 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
508 *) bn_sqrx8x_internal carry bug on x86_64
510 There is a carry propagating bug in the x86_64 Montgomery squaring
511 procedure. No EC algorithms are affected. Analysis suggests that attacks
512 against RSA and DSA as a result of this defect would be very difficult to
513 perform and are not believed likely. Attacks against DH are considered just
514 feasible (although very difficult) because most of the work necessary to
515 deduce information about a private key may be performed offline. The amount
516 of resources required for such an attack would be very significant and
517 likely only accessible to a limited number of attackers. An attacker would
518 additionally need online access to an unpatched system using the target
519 private key in a scenario with persistent DH parameters and a private
520 key that is shared between multiple clients.
522 This only affects processors that support the BMI1, BMI2 and ADX extensions
523 like Intel Broadwell (5th generation) and later or AMD Ryzen.
525 This issue was reported to OpenSSL by the OSS-Fuzz project.
529 *) Malformed X.509 IPAddressFamily could cause OOB read
531 If an X.509 certificate has a malformed IPAddressFamily extension,
532 OpenSSL could do a one-byte buffer overread. The most likely result
533 would be an erroneous display of the certificate in text format.
535 This issue was reported to OpenSSL by the OSS-Fuzz project.
539 Changes between 1.1.0e and 1.1.0f [25 May 2017]
541 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
542 platform rather than 'mingw'.
545 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
546 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
547 which is the minimum version we support.
550 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
552 *) Encrypt-Then-Mac renegotiation crash
554 During a renegotiation handshake if the Encrypt-Then-Mac extension is
555 negotiated where it was not in the original handshake (or vice-versa) then
556 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
557 and servers are affected.
559 This issue was reported to OpenSSL by Joe Orton (Red Hat).
563 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
565 *) Truncated packet could crash via OOB read
567 If one side of an SSL/TLS path is running on a 32-bit host and a specific
568 cipher is being used, then a truncated packet can cause that host to
569 perform an out-of-bounds read, usually resulting in a crash.
571 This issue was reported to OpenSSL by Robert Święcki of Google.
575 *) Bad (EC)DHE parameters cause a client crash
577 If a malicious server supplies bad parameters for a DHE or ECDHE key
578 exchange then this can result in the client attempting to dereference a
579 NULL pointer leading to a client crash. This could be exploited in a Denial
582 This issue was reported to OpenSSL by Guido Vranken.
586 *) BN_mod_exp may produce incorrect results on x86_64
588 There is a carry propagating bug in the x86_64 Montgomery squaring
589 procedure. No EC algorithms are affected. Analysis suggests that attacks
590 against RSA and DSA as a result of this defect would be very difficult to
591 perform and are not believed likely. Attacks against DH are considered just
592 feasible (although very difficult) because most of the work necessary to
593 deduce information about a private key may be performed offline. The amount
594 of resources required for such an attack would be very significant and
595 likely only accessible to a limited number of attackers. An attacker would
596 additionally need online access to an unpatched system using the target
597 private key in a scenario with persistent DH parameters and a private
598 key that is shared between multiple clients. For example this can occur by
599 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
600 similar to CVE-2015-3193 but must be treated as a separate problem.
602 This issue was reported to OpenSSL by the OSS-Fuzz project.
606 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
608 *) ChaCha20/Poly1305 heap-buffer-overflow
610 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
611 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
612 crash. This issue is not considered to be exploitable beyond a DoS.
614 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
618 *) CMS Null dereference
620 Applications parsing invalid CMS structures can crash with a NULL pointer
621 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
622 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
623 structure callback if an attempt is made to free certain invalid encodings.
624 Only CHOICE structures using a callback which do not handle NULL value are
627 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
631 *) Montgomery multiplication may produce incorrect results
633 There is a carry propagating bug in the Broadwell-specific Montgomery
634 multiplication procedure that handles input lengths divisible by, but
635 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
636 and DH private keys are impossible. This is because the subroutine in
637 question is not used in operations with the private key itself and an input
638 of the attacker's direct choice. Otherwise the bug can manifest itself as
639 transient authentication and key negotiation failures or reproducible
640 erroneous outcome of public-key operations with specially crafted input.
641 Among EC algorithms only Brainpool P-512 curves are affected and one
642 presumably can attack ECDH key negotiation. Impact was not analyzed in
643 detail, because pre-requisites for attack are considered unlikely. Namely
644 multiple clients have to choose the curve in question and the server has to
645 share the private key among them, neither of which is default behaviour.
646 Even then only clients that chose the curve will be affected.
648 This issue was publicly reported as transient failures and was not
649 initially recognized as a security issue. Thanks to Richard Morgan for
650 providing reproducible case.
654 *) Removed automatic addition of RPATH in shared libraries and executables,
655 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
658 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
660 *) Fix Use After Free for large message sizes
662 The patch applied to address CVE-2016-6307 resulted in an issue where if a
663 message larger than approx 16k is received then the underlying buffer to
664 store the incoming message is reallocated and moved. Unfortunately a
665 dangling pointer to the old location is left which results in an attempt to
666 write to the previously freed location. This is likely to result in a
667 crash, however it could potentially lead to execution of arbitrary code.
669 This issue only affects OpenSSL 1.1.0a.
671 This issue was reported to OpenSSL by Robert Święcki.
675 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
677 *) OCSP Status Request extension unbounded memory growth
679 A malicious client can send an excessively large OCSP Status Request
680 extension. If that client continually requests renegotiation, sending a
681 large OCSP Status Request extension each time, then there will be unbounded
682 memory growth on the server. This will eventually lead to a Denial Of
683 Service attack through memory exhaustion. Servers with a default
684 configuration are vulnerable even if they do not support OCSP. Builds using
685 the "no-ocsp" build time option are not affected.
687 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
691 *) SSL_peek() hang on empty record
693 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
694 sends an empty record. This could be exploited by a malicious peer in a
695 Denial Of Service attack.
697 This issue was reported to OpenSSL by Alex Gaynor.
701 *) Excessive allocation of memory in tls_get_message_header() and
702 dtls1_preprocess_fragment()
704 A (D)TLS message includes 3 bytes for its length in the header for the
705 message. This would allow for messages up to 16Mb in length. Messages of
706 this length are excessive and OpenSSL includes a check to ensure that a
707 peer is sending reasonably sized messages in order to avoid too much memory
708 being consumed to service a connection. A flaw in the logic of version
709 1.1.0 means that memory for the message is allocated too early, prior to
710 the excessive message length check. Due to way memory is allocated in
711 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
712 to service a connection. This could lead to a Denial of Service through
713 memory exhaustion. However, the excessive message length check still takes
714 place, and this would cause the connection to immediately fail. Assuming
715 that the application calls SSL_free() on the failed connection in a timely
716 manner then the 21Mb of allocated memory will then be immediately freed
717 again. Therefore the excessive memory allocation will be transitory in
718 nature. This then means that there is only a security impact if:
720 1) The application does not call SSL_free() in a timely manner in the event
721 that the connection fails
723 2) The application is working in a constrained environment where there is
724 very little free memory
726 3) The attacker initiates multiple connection attempts such that there are
727 multiple connections in a state where memory has been allocated for the
728 connection; SSL_free() has not yet been called; and there is insufficient
729 memory to service the multiple requests.
731 Except in the instance of (1) above any Denial Of Service is likely to be
732 transitory because as soon as the connection fails the memory is
733 subsequently freed again in the SSL_free() call. However there is an
734 increased risk during this period of application crashes due to the lack of
735 memory - which would then mean a more serious Denial of Service.
737 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
738 (CVE-2016-6307 and CVE-2016-6308)
741 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
742 had to be removed. Primary reason is that vendor assembler can't
743 assemble our modules with -KPIC flag. As result it, assembly
744 support, was not even available as option. But its lack means
745 lack of side-channel resistant code, which is incompatible with
746 security by todays standards. Fortunately gcc is readily available
747 prepackaged option, which we firmly point at...
750 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
752 *) Windows command-line tool supports UTF-8 opt-in option for arguments
753 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
754 (to any value) allows Windows user to access PKCS#12 file generated
755 with Windows CryptoAPI and protected with non-ASCII password, as well
756 as files generated under UTF-8 locale on Linux also protected with
760 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
761 have been disabled by default and removed from DEFAULT, just like RC4.
762 See the RC4 item below to re-enable both.
765 *) The method for finding the storage location for the Windows RAND seed file
766 has changed. First we check %RANDFILE%. If that is not set then we check
767 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
768 all else fails we fall back to C:\.
771 *) The EVP_EncryptUpdate() function has had its return type changed from void
772 to int. A return of 0 indicates and error while a return of 1 indicates
776 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
777 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
778 off the constant time implementation for RSA, DSA and DH have been made
779 no-ops and deprecated.
782 *) Windows RAND implementation was simplified to only get entropy by
783 calling CryptGenRandom(). Various other RAND-related tickets
785 [Joseph Wylie Yandle, Rich Salz]
787 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
788 and OPENSSL_LH_, respectively. The old names are available
789 with API compatibility. They new names are now completely documented.
792 *) Unify TYPE_up_ref(obj) methods signature.
793 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
794 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
795 int (instead of void) like all others TYPE_up_ref() methods.
796 So now these methods also check the return value of CRYPTO_atomic_add(),
797 and the validity of object reference counter.
798 [fdasilvayy@gmail.com]
800 *) With Windows Visual Studio builds, the .pdb files are installed
801 alongside the installed libraries and executables. For a static
802 library installation, ossl_static.pdb is the associate compiler
803 generated .pdb file to be used when linking programs.
806 *) Remove openssl.spec. Packaging files belong with the packagers.
809 *) Automatic Darwin/OSX configuration has had a refresh, it will now
810 recognise x86_64 architectures automatically. You can still decide
811 to build for a different bitness with the environment variable
812 KERNEL_BITS (can be 32 or 64), for example:
814 KERNEL_BITS=32 ./config
818 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
819 256 bit AES and HMAC with SHA256.
822 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
825 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
828 *) To enable users to have their own config files and build file templates,
829 Configure looks in the directory indicated by the environment variable
830 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
831 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
832 name and is used as is.
835 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
836 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
837 X509_CERT_FILE_CTX was removed.
840 *) "shared" builds are now the default. To create only static libraries use
841 the "no-shared" Configure option.
844 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
845 All of these option have not worked for some while and are fundamental
849 *) Make various cleanup routines no-ops and mark them as deprecated. Most
850 global cleanup functions are no longer required because they are handled
851 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
852 Explicitly de-initing can cause problems (e.g. where a library that uses
853 OpenSSL de-inits, but an application is still using it). The affected
854 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
855 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
856 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
860 *) --strict-warnings no longer enables runtime debugging options
861 such as REF_DEBUG. Instead, debug options are automatically
862 enabled with '--debug' builds.
863 [Andy Polyakov, Emilia Käsper]
865 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
866 have been moved out of the public header files. New functions for managing
867 these have been added.
870 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
871 objects have been moved out of the public header files. New
872 functions for managing these have been added.
875 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
876 have been moved out of the public header files. New functions for managing
877 these have been added.
880 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
881 moved out of the public header files. New functions for managing these
885 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
888 *) Removed the mk1mf build scripts.
891 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
892 it is always safe to #include a header now.
895 *) Removed the aged BC-32 config and all its supporting scripts
898 *) Removed support for Ultrix, Netware, and OS/2.
901 *) Add support for HKDF.
904 *) Add support for blake2b and blake2s
907 *) Added support for "pipelining". Ciphers that have the
908 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
909 encryptions/decryptions simultaneously. There are currently no built-in
910 ciphers with this property but the expectation is that engines will be able
911 to offer it to significantly improve throughput. Support has been extended
912 into libssl so that multiple records for a single connection can be
913 processed in one go (for >=TLS 1.1).
916 *) Added the AFALG engine. This is an async capable engine which is able to
917 offload work to the Linux kernel. In this initial version it only supports
918 AES128-CBC. The kernel must be version 4.1.0 or greater.
921 *) OpenSSL now uses a new threading API. It is no longer necessary to
922 set locking callbacks to use OpenSSL in a multi-threaded environment. There
923 are two supported threading models: pthreads and windows threads. It is
924 also possible to configure OpenSSL at compile time for "no-threads". The
925 old threading API should no longer be used. The functions have been
926 replaced with "no-op" compatibility macros.
927 [Alessandro Ghedini, Matt Caswell]
929 *) Modify behavior of ALPN to invoke callback after SNI/servername
930 callback, such that updates to the SSL_CTX affect ALPN.
933 *) Add SSL_CIPHER queries for authentication and key-exchange.
936 *) Changes to the DEFAULT cipherlist:
937 - Prefer (EC)DHE handshakes over plain RSA.
938 - Prefer AEAD ciphers over legacy ciphers.
939 - Prefer ECDSA over RSA when both certificates are available.
940 - Prefer TLSv1.2 ciphers/PRF.
941 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
945 *) Change the ECC default curve list to be this, in order: x25519,
946 secp256r1, secp521r1, secp384r1.
949 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
950 disabled by default. They can be re-enabled using the
951 enable-weak-ssl-ciphers option to Configure.
954 *) If the server has ALPN configured, but supports no protocols that the
955 client advertises, send a fatal "no_application_protocol" alert.
956 This behaviour is SHALL in RFC 7301, though it isn't universally
957 implemented by other servers.
960 *) Add X25519 support.
961 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
962 for public and private key encoding using the format documented in
963 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
964 key generation and key derivation.
966 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
970 *) Deprecate SRP_VBASE_get_by_user.
971 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
972 In order to fix an unavoidable memory leak (CVE-2016-0798),
973 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
974 seed, even if the seed is configured.
976 Users should use SRP_VBASE_get1_by_user instead. Note that in
977 SRP_VBASE_get1_by_user, caller must free the returned value. Note
978 also that even though configuring the SRP seed attempts to hide
979 invalid usernames by continuing the handshake with fake
980 credentials, this behaviour is not constant time and no strong
981 guarantees are made that the handshake is indistinguishable from
982 that of a valid user.
985 *) Configuration change; it's now possible to build dynamic engines
986 without having to build shared libraries and vice versa. This
987 only applies to the engines in engines/, those in crypto/engine/
988 will always be built into libcrypto (i.e. "static").
990 Building dynamic engines is enabled by default; to disable, use
991 the configuration option "disable-dynamic-engine".
993 The only requirements for building dynamic engines are the
994 presence of the DSO module and building with position independent
995 code, so they will also automatically be disabled if configuring
996 with "disable-dso" or "disable-pic".
998 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
999 are also taken away from openssl/opensslconf.h, as they are
1003 *) Configuration change; if there is a known flag to compile
1004 position independent code, it will always be applied on the
1005 libcrypto and libssl object files, and never on the application
1006 object files. This means other libraries that use routines from
1007 libcrypto / libssl can be made into shared libraries regardless
1008 of how OpenSSL was configured.
1010 If this isn't desirable, the configuration options "disable-pic"
1011 or "no-pic" can be used to disable the use of PIC. This will
1012 also disable building shared libraries and dynamic engines.
1015 *) Removed JPAKE code. It was experimental and has no wide use.
1018 *) The INSTALL_PREFIX Makefile variable has been renamed to
1019 DESTDIR. That makes for less confusion on what this variable
1020 is for. Also, the configuration option --install_prefix is
1024 *) Heartbeat for TLS has been removed and is disabled by default
1025 for DTLS; configure with enable-heartbeats. Code that uses the
1026 old #define's might need to be updated.
1027 [Emilia Käsper, Rich Salz]
1029 *) Rename REF_CHECK to REF_DEBUG.
1032 *) New "unified" build system
1034 The "unified" build system is aimed to be a common system for all
1035 platforms we support. With it comes new support for VMS.
1037 This system builds supports building in a different directory tree
1038 than the source tree. It produces one Makefile (for unix family
1039 or lookalikes), or one descrip.mms (for VMS).
1041 The source of information to make the Makefile / descrip.mms is
1042 small files called 'build.info', holding the necessary
1043 information for each directory with source to compile, and a
1044 template in Configurations, like unix-Makefile.tmpl or
1047 With this change, the library names were also renamed on Windows
1048 and on VMS. They now have names that are closer to the standard
1049 on Unix, and include the major version number, and in certain
1050 cases, the architecture they are built for. See "Notes on shared
1051 libraries" in INSTALL.
1053 We rely heavily on the perl module Text::Template.
1056 *) Added support for auto-initialisation and de-initialisation of the library.
1057 OpenSSL no longer requires explicit init or deinit routines to be called,
1058 except in certain circumstances. See the OPENSSL_init_crypto() and
1059 OPENSSL_init_ssl() man pages for further information.
1062 *) The arguments to the DTLSv1_listen function have changed. Specifically the
1063 "peer" argument is now expected to be a BIO_ADDR object.
1065 *) Rewrite of BIO networking library. The BIO library lacked consistent
1066 support of IPv6, and adding it required some more extensive
1067 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
1068 which hold all types of addresses and chains of address information.
1069 It also introduces a new API, with functions like BIO_socket,
1070 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
1071 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
1072 have been adapted accordingly.
1075 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
1079 *) CRIME protection: disable compression by default, even if OpenSSL is
1080 compiled with zlib enabled. Applications can still enable compression
1081 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
1082 using the SSL_CONF library to configure compression.
1085 *) The signature of the session callback configured with
1086 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
1087 was explicitly marked as 'const unsigned char*' instead of
1091 *) Always DPURIFY. Remove the use of uninitialized memory in the
1092 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
1095 *) Removed many obsolete configuration items, including
1096 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
1097 MD2_CHAR, MD2_INT, MD2_LONG
1099 IDEA_SHORT, IDEA_LONG
1100 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
1101 [Rich Salz, with advice from Andy Polyakov]
1103 *) Many BN internals have been moved to an internal header file.
1104 [Rich Salz with help from Andy Polyakov]
1106 *) Configuration and writing out the results from it has changed.
1107 Files such as Makefile include/openssl/opensslconf.h and are now
1108 produced through general templates, such as Makefile.in and
1109 crypto/opensslconf.h.in and some help from the perl module
1112 Also, the center of configuration information is no longer
1113 Makefile. Instead, Configure produces a perl module in
1114 configdata.pm which holds most of the config data (in the hash
1115 table %config), the target data that comes from the target
1116 configuration in one of the Configurations/*.conf files (in
1120 *) To clarify their intended purposes, the Configure options
1121 --prefix and --openssldir change their semantics, and become more
1122 straightforward and less interdependent.
1124 --prefix shall be used exclusively to give the location INSTALLTOP
1125 where programs, scripts, libraries, include files and manuals are
1126 going to be installed. The default is now /usr/local.
1128 --openssldir shall be used exclusively to give the default
1129 location OPENSSLDIR where certificates, private keys, CRLs are
1130 managed. This is also where the default openssl.cnf gets
1132 If the directory given with this option is a relative path, the
1133 values of both the --prefix value and the --openssldir value will
1134 be combined to become OPENSSLDIR.
1135 The default for --openssldir is INSTALLTOP/ssl.
1137 Anyone who uses --openssldir to specify where OpenSSL is to be
1138 installed MUST change to use --prefix instead.
1141 *) The GOST engine was out of date and therefore it has been removed. An up
1142 to date GOST engine is now being maintained in an external repository.
1143 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
1144 support for GOST ciphersuites (these are only activated if a GOST engine
1148 *) EGD is no longer supported by default; use enable-egd when
1150 [Ben Kaduk and Rich Salz]
1152 *) The distribution now has Makefile.in files, which are used to
1153 create Makefile's when Configure is run. *Configure must be run
1154 before trying to build now.*
1157 *) The return value for SSL_CIPHER_description() for error conditions
1161 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
1163 Obtaining and performing DNSSEC validation of TLSA records is
1164 the application's responsibility. The application provides
1165 the TLSA records of its choice to OpenSSL, and these are then
1166 used to authenticate the peer.
1168 The TLSA records need not even come from DNS. They can, for
1169 example, be used to implement local end-entity certificate or
1170 trust-anchor "pinning", where the "pin" data takes the form
1171 of TLSA records, which can augment or replace verification
1172 based on the usual WebPKI public certification authorities.
1175 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
1176 continues to support deprecated interfaces in default builds.
1177 However, applications are strongly advised to compile their
1178 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
1179 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
1180 or the 1.1.0 releases.
1182 In environments in which all applications have been ported to
1183 not use any deprecated interfaces OpenSSL's Configure script
1184 should be used with the --api=1.1.0 option to entirely remove
1185 support for the deprecated features from the library and
1186 unconditionally disable them in the installed headers.
1187 Essentially the same effect can be achieved with the "no-deprecated"
1188 argument to Configure, except that this will always restrict
1189 the build to just the latest API, rather than a fixed API
1192 As applications are ported to future revisions of the API,
1193 they should update their compile-time OPENSSL_API_COMPAT define
1194 accordingly, but in most cases should be able to continue to
1195 compile with later releases.
1197 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
1198 0x10000000L and 0x00908000L, respectively. However those
1199 versions did not support the OPENSSL_API_COMPAT feature, and
1200 so applications are not typically tested for explicit support
1201 of just the undeprecated features of either release.
1204 *) Add support for setting the minimum and maximum supported protocol.
1205 It can bet set via the SSL_set_min_proto_version() and
1206 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
1207 MaxProtocol. It's recommended to use the new APIs to disable
1208 protocols instead of disabling individual protocols using
1209 SSL_set_options() or SSL_CONF's Protocol. This change also
1210 removes support for disabling TLS 1.2 in the OpenSSL TLS
1211 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
1214 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
1217 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
1218 and integrates ECDSA and ECDH functionality into EC. Implementations can
1219 now redirect key generation and no longer need to convert to or from
1222 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
1223 include the ec.h header file instead.
1226 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
1227 ciphers who are no longer supported and drops support the ephemeral RSA key
1228 exchange. The LOW ciphers currently doesn't have any ciphers in it.
1231 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
1232 opaque. For HMAC_CTX, the following constructors and destructors
1235 HMAC_CTX *HMAC_CTX_new(void);
1236 void HMAC_CTX_free(HMAC_CTX *ctx);
1238 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
1239 destroy such methods has been added. See EVP_MD_meth_new(3) and
1240 EVP_CIPHER_meth_new(3) for documentation.
1243 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
1244 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
1245 EVP_MD_CTX_reset() should be called instead to reinitialise
1246 an already created structure.
1247 2) For consistency with the majority of our object creators and
1248 destructors, EVP_MD_CTX_(create|destroy) were renamed to
1249 EVP_MD_CTX_(new|free). The old names are retained as macros
1250 for deprecated builds.
1253 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
1254 cryptographic operations to be performed asynchronously as long as an
1255 asynchronous capable engine is used. See the ASYNC_start_job() man page for
1256 further details. Libssl has also had this capability integrated with the
1257 introduction of the new mode SSL_MODE_ASYNC and associated error
1258 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
1259 pages. This work was developed in partnership with Intel Corp.
1262 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
1263 always enabled now. If you want to disable the support you should
1264 exclude it using the list of supported ciphers. This also means that the
1265 "-no_ecdhe" option has been removed from s_server.
1268 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
1269 SSL_{CTX_}set1_curves() which can set a list.
1272 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
1273 curve you want to support using SSL_{CTX_}set1_curves().
1276 *) State machine rewrite. The state machine code has been significantly
1277 refactored in order to remove much duplication of code and solve issues
1278 with the old code (see ssl/statem/README for further details). This change
1279 does have some associated API changes. Notably the SSL_state() function
1280 has been removed and replaced by SSL_get_state which now returns an
1281 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
1282 altogether. The previous handshake states defined in ssl.h and ssl3.h have
1286 *) All instances of the string "ssleay" in the public API were replaced
1287 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
1288 Some error codes related to internal RSA_eay API's were renamed.
1291 *) The demo files in crypto/threads were moved to demo/threads.
1294 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
1296 [Matt Caswell, Rich Salz]
1298 *) New ASN.1 embed macro.
1300 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
1301 structure is not allocated: it is part of the parent. That is instead of
1309 This reduces memory fragmentation and make it impossible to accidentally
1310 set a mandatory field to NULL.
1312 This currently only works for some fields specifically a SEQUENCE, CHOICE,
1313 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
1314 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
1318 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
1321 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
1322 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
1323 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
1324 DES and RC4 ciphersuites.
1327 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1328 This changes the decoding behaviour for some invalid messages,
1329 though the change is mostly in the more lenient direction, and
1330 legacy behaviour is preserved as much as possible.
1333 *) Fix no-stdio build.
1334 [ David Woodhouse <David.Woodhouse@intel.com> and also
1335 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
1337 *) New testing framework
1338 The testing framework has been largely rewritten and is now using
1339 perl and the perl modules Test::Harness and an extended variant of
1340 Test::More called OpenSSL::Test to do its work. All test scripts in
1341 test/ have been rewritten into test recipes, and all direct calls to
1342 executables in test/Makefile have become individual recipes using the
1343 simplified testing OpenSSL::Test::Simple.
1345 For documentation on our testing modules, do:
1347 perldoc test/testlib/OpenSSL/Test/Simple.pm
1348 perldoc test/testlib/OpenSSL/Test.pm
1352 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
1353 are used; the latter aborts on memory leaks (usually checked on exit).
1354 Some undocumented "set malloc, etc., hooks" functions were removed
1355 and others were changed. All are now documented.
1358 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1360 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1362 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
1363 from RFC4279, RFC4785, RFC5487, RFC5489.
1365 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
1366 original RSA_PSK patch.
1369 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
1370 era flag was never set throughout the codebase (only read). Also removed
1371 SSL3_FLAGS_POP_BUFFER which was only used if
1372 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
1375 *) Changed the default name options in the "ca", "crl", "req" and "x509"
1376 to be "oneline" instead of "compat".
1379 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
1380 not aware of clients that still exhibit this bug, and the workaround
1381 hasn't been working properly for a while.
1384 *) The return type of BIO_number_read() and BIO_number_written() as well as
1385 the corresponding num_read and num_write members in the BIO structure has
1386 changed from unsigned long to uint64_t. On platforms where an unsigned
1387 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
1391 *) Given the pervasive nature of TLS extensions it is inadvisable to run
1392 OpenSSL without support for them. It also means that maintaining
1393 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
1394 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
1397 *) Removed support for the two export grade static DH ciphersuites
1398 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
1399 were newly added (along with a number of other static DH ciphersuites) to
1400 1.0.2. However the two export ones have *never* worked since they were
1401 introduced. It seems strange in any case to be adding new export
1402 ciphersuites, and given "logjam" it also does not seem correct to fix them.
1405 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1406 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1407 and turned into macros which simply call the new preferred function names
1408 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1409 should use the new names instead. Also as part of this change the ssl23.h
1410 header file has been removed.
1413 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1414 code and the associated standard is no longer considered fit-for-purpose.
1417 *) RT2547 was closed. When generating a private key, try to make the
1418 output file readable only by the owner. This behavior change might
1419 be noticeable when interacting with other software.
1421 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1425 *) Added HTTP GET support to the ocsp command.
1428 *) Changed default digest for the dgst and enc commands from MD5 to
1432 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1435 *) Added support for TLS extended master secret from
1436 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1437 initial patch which was a great help during development.
1440 *) All libssl internal structures have been removed from the public header
1441 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1442 now redundant). Users should not attempt to access internal structures
1443 directly. Instead they should use the provided API functions.
1446 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1447 Access to deprecated functions can be re-enabled by running config with
1448 "enable-deprecated". In addition applications wishing to use deprecated
1449 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1450 will, by default, disable some transitive includes that previously existed
1451 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1454 *) Added support for OCB mode. OpenSSL has been granted a patent license
1455 compatible with the OpenSSL license for use of OCB. Details are available
1456 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1457 for OCB can be removed by calling config with no-ocb.
1460 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1461 compatible client hello.
1464 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
1465 done while fixing the error code for the key-too-small case.
1466 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
1468 *) CA.sh has been removed; use CA.pl instead.
1471 *) Removed old DES API.
1474 *) Remove various unsupported platforms:
1480 Sinix/ReliantUNIX RM400
1485 16-bit platforms such as WIN16
1488 *) Clean up OPENSSL_NO_xxx #define's
1489 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
1490 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
1491 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
1492 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
1493 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
1494 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
1495 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
1496 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
1497 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
1498 Remove MS_STATIC; it's a relic from platforms <32 bits.
1501 *) Cleaned up dead code
1502 Remove all but one '#ifdef undef' which is to be looked at.
1505 *) Clean up calling of xxx_free routines.
1506 Just like free(), fix most of the xxx_free routines to accept
1507 NULL. Remove the non-null checks from callers. Save much code.
1510 *) Add secure heap for storage of private keys (when possible).
1511 Add BIO_s_secmem(), CBIGNUM, etc.
1512 Contributed by Akamai Technologies under our Corporate CLA.
1515 *) Experimental support for a new, fast, unbiased prime candidate generator,
1516 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
1517 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
1519 *) New output format NSS in the sess_id command line tool. This allows
1520 exporting the session id and the master key in NSS keylog format.
1521 [Martin Kaiser <martin@kaiser.cx>]
1523 *) Harmonize version and its documentation. -f flag is used to display
1525 [mancha <mancha1@zoho.com>]
1527 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1528 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1529 [mancha <mancha1@zoho.com>]
1531 *) Fix some double frees. These are not thought to be exploitable.
1532 [mancha <mancha1@zoho.com>]
1534 *) A missing bounds check in the handling of the TLS heartbeat extension
1535 can be used to reveal up to 64k of memory to a connected client or
1538 Thanks for Neel Mehta of Google Security for discovering this bug and to
1539 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1540 preparing the fix (CVE-2014-0160)
1541 [Adam Langley, Bodo Moeller]
1543 *) Fix for the attack described in the paper "Recovering OpenSSL
1544 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1545 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1546 http://eprint.iacr.org/2014/140
1548 Thanks to Yuval Yarom and Naomi Benger for discovering this
1549 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1550 [Yuval Yarom and Naomi Benger]
1552 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1553 this fixes a limitation in previous versions of OpenSSL.
1556 *) Experimental encrypt-then-mac support.
1558 Experimental support for encrypt then mac from
1559 draft-gutmann-tls-encrypt-then-mac-02.txt
1561 To enable it set the appropriate extension number (0x42 for the test
1562 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
1564 For non-compliant peers (i.e. just about everything) this should have no
1567 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
1571 *) Add EVP support for key wrapping algorithms, to avoid problems with
1572 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1573 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1574 algorithms and include tests cases.
1577 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
1581 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1582 MGF1 digest and OAEP label.
1585 *) Make openssl verify return errors.
1586 [Chris Palmer <palmer@google.com> and Ben Laurie]
1588 *) New function ASN1_TIME_diff to calculate the difference between two
1589 ASN1_TIME structures or one structure and the current time.
1592 *) Update fips_test_suite to support multiple command line options. New
1593 test to induce all self test errors in sequence and check expected
1597 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1598 sign or verify all in one operation.
1601 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1602 test programs and fips_test_suite. Includes functionality to parse
1603 the minimal script output of fipsalgest.pl directly.
1606 *) Add authorisation parameter to FIPS_module_mode_set().
1609 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1612 *) Use separate DRBG fields for internal and external flags. New function
1613 FIPS_drbg_health_check() to perform on demand health checking. Add
1614 generation tests to fips_test_suite with reduced health check interval to
1615 demonstrate periodic health checking. Add "nodh" option to
1616 fips_test_suite to skip very slow DH test.
1619 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
1623 *) More extensive health check for DRBG checking many more failure modes.
1624 New function FIPS_selftest_drbg_all() to handle every possible DRBG
1625 combination: call this in fips_test_suite.
1628 *) Add support for canonical generation of DSA parameter 'g'. See
1631 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
1632 POST to handle HMAC cases.
1635 *) Add functions FIPS_module_version() and FIPS_module_version_text()
1636 to return numerical and string versions of the FIPS module number.
1639 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
1640 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
1641 outside the validated module in the FIPS capable OpenSSL.
1644 *) Minor change to DRBG entropy callback semantics. In some cases
1645 there is no multiple of the block length between min_len and
1646 max_len. Allow the callback to return more than max_len bytes
1647 of entropy but discard any extra: it is the callback's responsibility
1648 to ensure that the extra data discarded does not impact the
1649 requested amount of entropy.
1652 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
1653 information in FIPS186-3, SP800-57 and SP800-131A.
1656 *) CCM support via EVP. Interface is very similar to GCM case except we
1657 must supply all data in one chunk (i.e. no update, final) and the
1658 message length must be supplied if AAD is used. Add algorithm test
1662 *) Initial version of POST overhaul. Add POST callback to allow the status
1663 of POST to be monitored and/or failures induced. Modify fips_test_suite
1664 to use callback. Always run all selftests even if one fails.
1667 *) XTS support including algorithm test driver in the fips_gcmtest program.
1668 Note: this does increase the maximum key length from 32 to 64 bytes but
1669 there should be no binary compatibility issues as existing applications
1670 will never use XTS mode.
1673 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
1674 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
1675 performs algorithm blocking for unapproved PRNG types. Also do not
1676 set PRNG type in FIPS_mode_set(): leave this to the application.
1677 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
1678 the standard OpenSSL PRNG: set additional data to a date time vector.
1681 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
1682 This shouldn't present any incompatibility problems because applications
1683 shouldn't be using these directly and any that are will need to rethink
1684 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
1687 *) Extensive self tests and health checking required by SP800-90 DRBG.
1688 Remove strength parameter from FIPS_drbg_instantiate and always
1689 instantiate at maximum supported strength.
1692 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
1695 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
1698 *) New function DH_compute_key_padded() to compute a DH key and pad with
1699 leading zeroes if needed: this complies with SP800-56A et al.
1702 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
1703 anything, incomplete, subject to change and largely untested at present.
1706 *) Modify fipscanisteronly build option to only build the necessary object
1707 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
1710 *) Add experimental option FIPSSYMS to give all symbols in
1711 fipscanister.o and FIPS or fips prefix. This will avoid
1712 conflicts with future versions of OpenSSL. Add perl script
1713 util/fipsas.pl to preprocess assembly language source files
1714 and rename any affected symbols.
1717 *) Add selftest checks and algorithm block of non-fips algorithms in
1718 FIPS mode. Remove DES2 from selftests.
1721 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
1722 return internal method without any ENGINE dependencies. Add new
1723 tiny fips sign and verify functions.
1726 *) New build option no-ec2m to disable characteristic 2 code.
1729 *) New build option "fipscanisteronly". This only builds fipscanister.o
1730 and (currently) associated fips utilities. Uses the file Makefile.fips
1731 instead of Makefile.org as the prototype.
1734 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
1735 Update fips_gcmtest to use IV generator.
1738 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
1739 setting output buffer to NULL. The *Final function must be
1740 called although it will not retrieve any additional data. The tag
1741 can be set or retrieved with a ctrl. The IV length is by default 12
1742 bytes (96 bits) but can be set to an alternative value. If the IV
1743 length exceeds the maximum IV length (currently 16 bytes) it cannot be
1747 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
1748 underlying do_cipher function handles all cipher semantics itself
1749 including padding and finalisation. This is useful if (for example)
1750 an ENGINE cipher handles block padding itself. The behaviour of
1751 do_cipher is subtly changed if this flag is set: the return value
1752 is the number of characters written to the output buffer (zero is
1753 no longer an error code) or a negative error code. Also if the
1754 input buffer is NULL and length 0 finalisation should be performed.
1757 *) If a candidate issuer certificate is already part of the constructed
1758 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
1761 *) Improve forward-security support: add functions
1763 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
1764 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
1766 for use by SSL/TLS servers; the callback function will be called whenever a
1767 new session is created, and gets to decide whether the session may be
1768 cached to make it resumable (return 0) or not (return 1). (As by the
1769 SSL/TLS protocol specifications, the session_id sent by the server will be
1770 empty to indicate that the session is not resumable; also, the server will
1771 not generate RFC 4507 (RFC 5077) session tickets.)
1773 A simple reasonable callback implementation is to return is_forward_secure.
1774 This parameter will be set to 1 or 0 depending on the ciphersuite selected
1775 by the SSL/TLS server library, indicating whether it can provide forward
1777 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1779 *) New -verify_name option in command line utilities to set verification
1783 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
1784 Add CMAC pkey methods.
1787 *) Experimental renegotiation in s_server -www mode. If the client
1788 browses /reneg connection is renegotiated. If /renegcert it is
1789 renegotiated requesting a certificate.
1792 *) Add an "external" session cache for debugging purposes to s_server. This
1793 should help trace issues which normally are only apparent in deployed
1794 multi-process servers.
1797 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
1798 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
1799 BIO_set_cipher() and some obscure PEM functions were changed so they
1800 can now return an error. The RAND changes required a change to the
1801 RAND_METHOD structure.
1804 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
1805 a gcc attribute to warn if the result of a function is ignored. This
1806 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
1807 whose return value is often ignored.
1810 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
1811 These allow SCTs (signed certificate timestamps) to be requested and
1812 validated when establishing a connection.
1813 [Rob Percival <robpercival@google.com>]
1815 Changes between 1.0.2g and 1.0.2h [3 May 2016]
1817 *) Prevent padding oracle in AES-NI CBC MAC check
1819 A MITM attacker can use a padding oracle attack to decrypt traffic
1820 when the connection uses an AES CBC cipher and the server support
1823 This issue was introduced as part of the fix for Lucky 13 padding
1824 attack (CVE-2013-0169). The padding check was rewritten to be in
1825 constant time by making sure that always the same bytes are read and
1826 compared against either the MAC or padding bytes. But it no longer
1827 checked that there was enough data to have both the MAC and padding
1830 This issue was reported by Juraj Somorovsky using TLS-Attacker.
1834 *) Fix EVP_EncodeUpdate overflow
1836 An overflow can occur in the EVP_EncodeUpdate() function which is used for
1837 Base64 encoding of binary data. If an attacker is able to supply very large
1838 amounts of input data then a length check can overflow resulting in a heap
1841 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
1842 the PEM_write_bio* family of functions. These are mainly used within the
1843 OpenSSL command line applications, so any application which processes data
1844 from an untrusted source and outputs it as a PEM file should be considered
1845 vulnerable to this issue. User applications that call these APIs directly
1846 with large amounts of untrusted data may also be vulnerable.
1848 This issue was reported by Guido Vranken.
1852 *) Fix EVP_EncryptUpdate overflow
1854 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
1855 is able to supply very large amounts of input data after a previous call to
1856 EVP_EncryptUpdate() with a partial block then a length check can overflow
1857 resulting in a heap corruption. Following an analysis of all OpenSSL
1858 internal usage of the EVP_EncryptUpdate() function all usage is one of two
1859 forms. The first form is where the EVP_EncryptUpdate() call is known to be
1860 the first called function after an EVP_EncryptInit(), and therefore that
1861 specific call must be safe. The second form is where the length passed to
1862 EVP_EncryptUpdate() can be seen from the code to be some small value and
1863 therefore there is no possibility of an overflow. Since all instances are
1864 one of these two forms, it is believed that there can be no overflows in
1865 internal code due to this problem. It should be noted that
1866 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
1867 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
1868 of these calls have also been analysed too and it is believed there are no
1869 instances in internal usage where an overflow could occur.
1871 This issue was reported by Guido Vranken.
1875 *) Prevent ASN.1 BIO excessive memory allocation
1877 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
1878 a short invalid encoding can cause allocation of large amounts of memory
1879 potentially consuming excessive resources or exhausting memory.
1881 Any application parsing untrusted data through d2i BIO functions is
1882 affected. The memory based functions such as d2i_X509() are *not* affected.
1883 Since the memory based functions are used by the TLS library, TLS
1884 applications are not affected.
1886 This issue was reported by Brian Carpenter.
1892 ASN1 Strings that are over 1024 bytes can cause an overread in applications
1893 using the X509_NAME_oneline() function on EBCDIC systems. This could result
1894 in arbitrary stack data being returned in the buffer.
1896 This issue was reported by Guido Vranken.
1900 *) Modify behavior of ALPN to invoke callback after SNI/servername
1901 callback, such that updates to the SSL_CTX affect ALPN.
1904 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
1908 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
1909 methods are enabled and ssl2 is disabled the methods return NULL.
1912 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
1914 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
1915 Builds that are not configured with "enable-weak-ssl-ciphers" will not
1916 provide any "EXPORT" or "LOW" strength ciphers.
1919 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
1920 is by default disabled at build-time. Builds that are not configured with
1921 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
1922 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
1923 will need to explicitly call either of:
1925 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
1927 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
1929 as appropriate. Even if either of those is used, or the application
1930 explicitly uses the version-specific SSLv2_method() or its client and
1931 server variants, SSLv2 ciphers vulnerable to exhaustive search key
1932 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
1933 ciphers, and SSLv2 56-bit DES are no longer available.
1937 *) Fix a double-free in DSA code
1939 A double free bug was discovered when OpenSSL parses malformed DSA private
1940 keys and could lead to a DoS attack or memory corruption for applications
1941 that receive DSA private keys from untrusted sources. This scenario is
1944 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
1949 *) Disable SRP fake user seed to address a server memory leak.
1951 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
1953 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1954 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
1955 was changed to ignore the "fake user" SRP seed, even if the seed
1958 Users should use SRP_VBASE_get1_by_user instead. Note that in
1959 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1960 also that even though configuring the SRP seed attempts to hide
1961 invalid usernames by continuing the handshake with fake
1962 credentials, this behaviour is not constant time and no strong
1963 guarantees are made that the handshake is indistinguishable from
1964 that of a valid user.
1968 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
1970 In the BN_hex2bn function the number of hex digits is calculated using an
1971 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
1972 large values of |i| this can result in |bn_expand| not allocating any
1973 memory because |i * 4| is negative. This can leave the internal BIGNUM data
1974 field as NULL leading to a subsequent NULL ptr deref. For very large values
1975 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
1976 In this case memory is allocated to the internal BIGNUM data field, but it
1977 is insufficiently sized leading to heap corruption. A similar issue exists
1978 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
1979 is ever called by user applications with very large untrusted hex/dec data.
1980 This is anticipated to be a rare occurrence.
1982 All OpenSSL internal usage of these functions use data that is not expected
1983 to be untrusted, e.g. config file data or application command line
1984 arguments. If user developed applications generate config file data based
1985 on untrusted data then it is possible that this could also lead to security
1986 consequences. This is also anticipated to be rare.
1988 This issue was reported to OpenSSL by Guido Vranken.
1992 *) Fix memory issues in BIO_*printf functions
1994 The internal |fmtstr| function used in processing a "%s" format string in
1995 the BIO_*printf functions could overflow while calculating the length of a
1996 string and cause an OOB read when printing very long strings.
1998 Additionally the internal |doapr_outch| function can attempt to write to an
1999 OOB memory location (at an offset from the NULL pointer) in the event of a
2000 memory allocation failure. In 1.0.2 and below this could be caused where
2001 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
2002 could be in processing a very long "%s" format string. Memory leaks can
2005 The first issue may mask the second issue dependent on compiler behaviour.
2006 These problems could enable attacks where large amounts of untrusted data
2007 is passed to the BIO_*printf functions. If applications use these functions
2008 in this way then they could be vulnerable. OpenSSL itself uses these
2009 functions when printing out human-readable dumps of ASN.1 data. Therefore
2010 applications that print this data could be vulnerable if the data is from
2011 untrusted sources. OpenSSL command line applications could also be
2012 vulnerable where they print out ASN.1 data, or if untrusted data is passed
2013 as command line arguments.
2015 Libssl is not considered directly vulnerable. Additionally certificates etc
2016 received via remote connections via libssl are also unlikely to be able to
2017 trigger these issues because of message size limits enforced within libssl.
2019 This issue was reported to OpenSSL Guido Vranken.
2023 *) Side channel attack on modular exponentiation
2025 A side-channel attack was found which makes use of cache-bank conflicts on
2026 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
2027 of RSA keys. The ability to exploit this issue is limited as it relies on
2028 an attacker who has control of code in a thread running on the same
2029 hyper-threaded core as the victim thread which is performing decryptions.
2031 This issue was reported to OpenSSL by Yuval Yarom, The University of
2032 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
2033 Nadia Heninger, University of Pennsylvania with more information at
2034 http://cachebleed.info.
2038 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
2039 if no keysize is specified with default_bits. This fixes an
2040 omission in an earlier change that changed all RSA/DSA key generation
2041 apps to use 2048 bits by default.
2044 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
2045 *) DH small subgroups
2047 Historically OpenSSL only ever generated DH parameters based on "safe"
2048 primes. More recently (in version 1.0.2) support was provided for
2049 generating X9.42 style parameter files such as those required for RFC 5114
2050 support. The primes used in such files may not be "safe". Where an
2051 application is using DH configured with parameters based on primes that are
2052 not "safe" then an attacker could use this fact to find a peer's private
2053 DH exponent. This attack requires that the attacker complete multiple
2054 handshakes in which the peer uses the same private DH exponent. For example
2055 this could be used to discover a TLS server's private DH exponent if it's
2056 reusing the private DH exponent or it's using a static DH ciphersuite.
2058 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
2059 TLS. It is not on by default. If the option is not set then the server
2060 reuses the same private DH exponent for the life of the server process and
2061 would be vulnerable to this attack. It is believed that many popular
2062 applications do set this option and would therefore not be at risk.
2064 The fix for this issue adds an additional check where a "q" parameter is
2065 available (as is the case in X9.42 based parameters). This detects the
2066 only known attack, and is the only possible defense for static DH
2067 ciphersuites. This could have some performance impact.
2069 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
2070 default and cannot be disabled. This could have some performance impact.
2072 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
2076 *) SSLv2 doesn't block disabled ciphers
2078 A malicious client can negotiate SSLv2 ciphers that have been disabled on
2079 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
2080 been disabled, provided that the SSLv2 protocol was not also disabled via
2083 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
2084 and Sebastian Schinzel.
2088 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
2090 *) BN_mod_exp may produce incorrect results on x86_64
2092 There is a carry propagating bug in the x86_64 Montgomery squaring
2093 procedure. No EC algorithms are affected. Analysis suggests that attacks
2094 against RSA and DSA as a result of this defect would be very difficult to
2095 perform and are not believed likely. Attacks against DH are considered just
2096 feasible (although very difficult) because most of the work necessary to
2097 deduce information about a private key may be performed offline. The amount
2098 of resources required for such an attack would be very significant and
2099 likely only accessible to a limited number of attackers. An attacker would
2100 additionally need online access to an unpatched system using the target
2101 private key in a scenario with persistent DH parameters and a private
2102 key that is shared between multiple clients. For example this can occur by
2103 default in OpenSSL DHE based SSL/TLS ciphersuites.
2105 This issue was reported to OpenSSL by Hanno Böck.
2109 *) Certificate verify crash with missing PSS parameter
2111 The signature verification routines will crash with a NULL pointer
2112 dereference if presented with an ASN.1 signature using the RSA PSS
2113 algorithm and absent mask generation function parameter. Since these
2114 routines are used to verify certificate signature algorithms this can be
2115 used to crash any certificate verification operation and exploited in a
2116 DoS attack. Any application which performs certificate verification is
2117 vulnerable including OpenSSL clients and servers which enable client
2120 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
2124 *) X509_ATTRIBUTE memory leak
2126 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
2127 memory. This structure is used by the PKCS#7 and CMS routines so any
2128 application which reads PKCS#7 or CMS data from untrusted sources is
2129 affected. SSL/TLS is not affected.
2131 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
2136 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
2137 This changes the decoding behaviour for some invalid messages,
2138 though the change is mostly in the more lenient direction, and
2139 legacy behaviour is preserved as much as possible.
2142 *) In DSA_generate_parameters_ex, if the provided seed is too short,
2144 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
2146 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
2148 *) Alternate chains certificate forgery
2150 During certificate verification, OpenSSL will attempt to find an
2151 alternative certificate chain if the first attempt to build such a chain
2152 fails. An error in the implementation of this logic can mean that an
2153 attacker could cause certain checks on untrusted certificates to be
2154 bypassed, such as the CA flag, enabling them to use a valid leaf
2155 certificate to act as a CA and "issue" an invalid certificate.
2157 This issue was reported to OpenSSL by Adam Langley/David Benjamin
2161 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
2163 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
2164 incompatibility in the handling of HMAC. The previous ABI has now been
2168 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
2170 *) Malformed ECParameters causes infinite loop
2172 When processing an ECParameters structure OpenSSL enters an infinite loop
2173 if the curve specified is over a specially malformed binary polynomial
2176 This can be used to perform denial of service against any
2177 system which processes public keys, certificate requests or
2178 certificates. This includes TLS clients and TLS servers with
2179 client authentication enabled.
2181 This issue was reported to OpenSSL by Joseph Barr-Pixton.
2185 *) Exploitable out-of-bounds read in X509_cmp_time
2187 X509_cmp_time does not properly check the length of the ASN1_TIME
2188 string and can read a few bytes out of bounds. In addition,
2189 X509_cmp_time accepts an arbitrary number of fractional seconds in the
2192 An attacker can use this to craft malformed certificates and CRLs of
2193 various sizes and potentially cause a segmentation fault, resulting in
2194 a DoS on applications that verify certificates or CRLs. TLS clients
2195 that verify CRLs are affected. TLS clients and servers with client
2196 authentication enabled may be affected if they use custom verification
2199 This issue was reported to OpenSSL by Robert Swiecki (Google), and
2200 independently by Hanno Böck.
2204 *) PKCS7 crash with missing EnvelopedContent
2206 The PKCS#7 parsing code does not handle missing inner EncryptedContent
2207 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
2208 with missing content and trigger a NULL pointer dereference on parsing.
2210 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
2211 structures from untrusted sources are affected. OpenSSL clients and
2212 servers are not affected.
2214 This issue was reported to OpenSSL by Michal Zalewski (Google).
2218 *) CMS verify infinite loop with unknown hash function
2220 When verifying a signedData message the CMS code can enter an infinite loop
2221 if presented with an unknown hash function OID. This can be used to perform
2222 denial of service against any system which verifies signedData messages using
2224 This issue was reported to OpenSSL by Johannes Bauer.
2228 *) Race condition handling NewSessionTicket
2230 If a NewSessionTicket is received by a multi-threaded client when attempting to
2231 reuse a previous ticket then a race condition can occur potentially leading to
2232 a double free of the ticket data.
2236 *) Only support 256-bit or stronger elliptic curves with the
2237 'ecdh_auto' setting (server) or by default (client). Of supported
2238 curves, prefer P-256 (both).
2241 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
2243 *) ClientHello sigalgs DoS fix
2245 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
2246 invalid signature algorithms extension a NULL pointer dereference will
2247 occur. This can be exploited in a DoS attack against the server.
2249 This issue was was reported to OpenSSL by David Ramos of Stanford
2252 [Stephen Henson and Matt Caswell]
2254 *) Multiblock corrupted pointer fix
2256 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
2257 feature only applies on 64 bit x86 architecture platforms that support AES
2258 NI instructions. A defect in the implementation of "multiblock" can cause
2259 OpenSSL's internal write buffer to become incorrectly set to NULL when
2260 using non-blocking IO. Typically, when the user application is using a
2261 socket BIO for writing, this will only result in a failed connection.
2262 However if some other BIO is used then it is likely that a segmentation
2263 fault will be triggered, thus enabling a potential DoS attack.
2265 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
2269 *) Segmentation fault in DTLSv1_listen fix
2271 The DTLSv1_listen function is intended to be stateless and processes the
2272 initial ClientHello from many peers. It is common for user code to loop
2273 over the call to DTLSv1_listen until a valid ClientHello is received with
2274 an associated cookie. A defect in the implementation of DTLSv1_listen means
2275 that state is preserved in the SSL object from one invocation to the next
2276 that can lead to a segmentation fault. Errors processing the initial
2277 ClientHello can trigger this scenario. An example of such an error could be
2278 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
2281 This issue was reported to OpenSSL by Per Allansson.
2285 *) Segmentation fault in ASN1_TYPE_cmp fix
2287 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
2288 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
2289 certificate signature algorithm consistency this can be used to crash any
2290 certificate verification operation and exploited in a DoS attack. Any
2291 application which performs certificate verification is vulnerable including
2292 OpenSSL clients and servers which enable client authentication.
2296 *) Segmentation fault for invalid PSS parameters fix
2298 The signature verification routines will crash with a NULL pointer
2299 dereference if presented with an ASN.1 signature using the RSA PSS
2300 algorithm and invalid parameters. Since these routines are used to verify
2301 certificate signature algorithms this can be used to crash any
2302 certificate verification operation and exploited in a DoS attack. Any
2303 application which performs certificate verification is vulnerable including
2304 OpenSSL clients and servers which enable client authentication.
2306 This issue was was reported to OpenSSL by Brian Carpenter.
2310 *) ASN.1 structure reuse memory corruption fix
2312 Reusing a structure in ASN.1 parsing may allow an attacker to cause
2313 memory corruption via an invalid write. Such reuse is and has been
2314 strongly discouraged and is believed to be rare.
2316 Applications that parse structures containing CHOICE or ANY DEFINED BY
2317 components may be affected. Certificate parsing (d2i_X509 and related
2318 functions) are however not affected. OpenSSL clients and servers are
2323 *) PKCS7 NULL pointer dereferences fix
2325 The PKCS#7 parsing code does not handle missing outer ContentInfo
2326 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
2327 missing content and trigger a NULL pointer dereference on parsing.
2329 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
2330 otherwise parse PKCS#7 structures from untrusted sources are
2331 affected. OpenSSL clients and servers are not affected.
2333 This issue was reported to OpenSSL by Michal Zalewski (Google).
2337 *) DoS via reachable assert in SSLv2 servers fix
2339 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
2340 servers that both support SSLv2 and enable export cipher suites by sending
2341 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
2343 This issue was discovered by Sean Burford (Google) and Emilia Käsper
2344 (OpenSSL development team).
2348 *) Empty CKE with client auth and DHE fix
2350 If client auth is used then a server can seg fault in the event of a DHE
2351 ciphersuite being selected and a zero length ClientKeyExchange message
2352 being sent by the client. This could be exploited in a DoS attack.
2356 *) Handshake with unseeded PRNG fix
2358 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
2359 with an unseeded PRNG. The conditions are:
2360 - The client is on a platform where the PRNG has not been seeded
2361 automatically, and the user has not seeded manually
2362 - A protocol specific client method version has been used (i.e. not
2363 SSL_client_methodv23)
2364 - A ciphersuite is used that does not require additional random data from
2365 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
2367 If the handshake succeeds then the client random that has been used will
2368 have been generated from a PRNG with insufficient entropy and therefore the
2369 output may be predictable.
2371 For example using the following command with an unseeded openssl will
2372 succeed on an unpatched platform:
2374 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
2378 *) Use After Free following d2i_ECPrivatekey error fix
2380 A malformed EC private key file consumed via the d2i_ECPrivateKey function
2381 could cause a use after free condition. This, in turn, could cause a double
2382 free in several private key parsing functions (such as d2i_PrivateKey
2383 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
2384 for applications that receive EC private keys from untrusted
2385 sources. This scenario is considered rare.
2387 This issue was discovered by the BoringSSL project and fixed in their
2392 *) X509_to_X509_REQ NULL pointer deref fix
2394 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
2395 the certificate key is invalid. This function is rarely used in practice.
2397 This issue was discovered by Brian Carpenter.
2401 *) Removed the export ciphers from the DEFAULT ciphers
2404 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2406 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2407 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2408 So far those who have to target multiple platforms would compromise
2409 and argue that binary targeting say ARMv5 would still execute on
2410 ARMv8. "Universal" build resolves this compromise by providing
2411 near-optimal performance even on newer platforms.
2414 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2415 (other platforms pending).
2416 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2418 *) Add support for the SignedCertificateTimestampList certificate and
2419 OCSP response extensions from RFC6962.
2422 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2423 for corner cases. (Certain input points at infinity could lead to
2424 bogus results, with non-infinity inputs mapped to infinity too.)
2427 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2428 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2429 common cases are optimized and there still is room for further
2430 improvements. Vector Permutation AES for Altivec is also added.
2433 *) Add support for little-endian ppc64 Linux target.
2434 [Marcelo Cerri (IBM)]
2436 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2437 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2438 are optimized and there still is room for further improvements.
2439 Both 32- and 64-bit modes are supported.
2440 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2442 *) Improved ARMv7 NEON support.
2445 *) Support for SPARC Architecture 2011 crypto extensions, first
2446 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2447 SHA256/512, MD5, GHASH and modular exponentiation.
2448 [Andy Polyakov, David Miller]
2450 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2452 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2454 *) Support for new and upcoming Intel processors, including AVX2,
2455 BMI and SHA ISA extensions. This includes additional "stitched"
2456 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2459 This work was sponsored by Intel Corp.
2462 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2463 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
2464 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
2467 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2468 this fixes a limitation in previous versions of OpenSSL.
2471 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2472 MGF1 digest and OAEP label.
2475 *) Add EVP support for key wrapping algorithms, to avoid problems with
2476 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2477 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2478 algorithms and include tests cases.
2481 *) Add functions to allocate and set the fields of an ECDSA_METHOD
2483 [Douglas E. Engert, Steve Henson]
2485 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
2486 difference in days and seconds between two tm or ASN1_TIME structures.
2489 *) Add -rev test option to s_server to just reverse order of characters
2490 received by client and send back to server. Also prints an abbreviated
2491 summary of the connection parameters.
2494 *) New option -brief for s_client and s_server to print out a brief summary
2495 of connection parameters.
2498 *) Add callbacks for arbitrary TLS extensions.
2499 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
2501 *) New option -crl_download in several openssl utilities to download CRLs
2502 from CRLDP extension in certificates.
2505 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
2508 *) New function X509_CRL_diff to generate a delta CRL from the difference
2509 of two full CRLs. Add support to "crl" utility.
2512 *) New functions to set lookup_crls function and to retrieve
2513 X509_STORE from X509_STORE_CTX.
2516 *) Print out deprecated issuer and subject unique ID fields in
2520 *) Extend OCSP I/O functions so they can be used for simple general purpose
2521 HTTP as well as OCSP. New wrapper function which can be used to download
2522 CRLs using the OCSP API.
2525 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
2528 *) SSL_CONF* functions. These provide a common framework for application
2529 configuration using configuration files or command lines.
2532 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
2533 message callback and prints the results. Needs compile time option
2534 "enable-ssl-trace". New options to s_client and s_server to enable
2538 *) New ctrl and macro to retrieve supported points extensions.
2539 Print out extension in s_server and s_client.
2542 *) New functions to retrieve certificate signature and signature
2546 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
2550 *) New Suite B modes for TLS code. These use and enforce the requirements
2551 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
2552 only use Suite B curves. The Suite B modes can be set by using the
2553 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
2556 *) New chain verification flags for Suite B levels of security. Check
2557 algorithms are acceptable when flags are set in X509_verify_cert.
2560 *) Make tls1_check_chain return a set of flags indicating checks passed
2561 by a certificate chain. Add additional tests to handle client
2562 certificates: checks for matching certificate type and issuer name
2566 *) If an attempt is made to use a signature algorithm not in the peer
2567 preference list abort the handshake. If client has no suitable
2568 signature algorithms in response to a certificate request do not
2569 use the certificate.
2572 *) If server EC tmp key is not in client preference list abort handshake.
2575 *) Add support for certificate stores in CERT structure. This makes it
2576 possible to have different stores per SSL structure or one store in
2577 the parent SSL_CTX. Include distinct stores for certificate chain
2578 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
2579 to build and store a certificate chain in CERT structure: returning
2580 an error if the chain cannot be built: this will allow applications
2581 to test if a chain is correctly configured.
2583 Note: if the CERT based stores are not set then the parent SSL_CTX
2584 store is used to retain compatibility with existing behaviour.
2588 *) New function ssl_set_client_disabled to set a ciphersuite disabled
2589 mask based on the current session, check mask when sending client
2590 hello and checking the requested ciphersuite.
2593 *) New ctrls to retrieve and set certificate types in a certificate
2594 request message. Print out received values in s_client. If certificate
2595 types is not set with custom values set sensible values based on
2596 supported signature algorithms.
2599 *) Support for distinct client and server supported signature algorithms.
2602 *) Add certificate callback. If set this is called whenever a certificate
2603 is required by client or server. An application can decide which
2604 certificate chain to present based on arbitrary criteria: for example
2605 supported signature algorithms. Add very simple example to s_server.
2606 This fixes many of the problems and restrictions of the existing client
2607 certificate callback: for example you can now clear an existing
2608 certificate and specify the whole chain.
2611 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2612 the certificate can be used for (if anything). Set valid_flags field
2613 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2614 to have similar checks in it.
2616 Add new "cert_flags" field to CERT structure and include a "strict mode".
2617 This enforces some TLS certificate requirements (such as only permitting
2618 certificate signature algorithms contained in the supported algorithms
2619 extension) which some implementations ignore: this option should be used
2620 with caution as it could cause interoperability issues.
2623 *) Update and tidy signature algorithm extension processing. Work out
2624 shared signature algorithms based on preferences and peer algorithms
2625 and print them out in s_client and s_server. Abort handshake if no
2626 shared signature algorithms.
2629 *) Add new functions to allow customised supported signature algorithms
2630 for SSL and SSL_CTX structures. Add options to s_client and s_server
2634 *) New function SSL_certs_clear() to delete all references to certificates
2635 from an SSL structure. Before this once a certificate had been added
2636 it couldn't be removed.
2639 *) Integrate hostname, email address and IP address checking with certificate
2640 verification. New verify options supporting checking in openssl utility.
2643 *) Fixes and wildcard matching support to hostname and email checking
2644 functions. Add manual page.
2645 [Florian Weimer (Red Hat Product Security Team)]
2647 *) New functions to check a hostname email or IP address against a
2648 certificate. Add options x509 utility to print results of checks against
2652 *) Fix OCSP checking.
2653 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
2655 *) Initial experimental support for explicitly trusted non-root CAs.
2656 OpenSSL still tries to build a complete chain to a root but if an
2657 intermediate CA has a trust setting included that is used. The first
2658 setting is used: whether to trust (e.g., -addtrust option to the x509
2662 *) Add -trusted_first option which attempts to find certificates in the
2663 trusted store even if an untrusted chain is also supplied.
2666 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
2667 platform support for Linux and Android.
2670 *) Support for linux-x32, ILP32 environment in x86_64 framework.
2673 *) Experimental multi-implementation support for FIPS capable OpenSSL.
2674 When in FIPS mode the approved implementations are used as normal,
2675 when not in FIPS mode the internal unapproved versions are used instead.
2676 This means that the FIPS capable OpenSSL isn't forced to use the
2677 (often lower performance) FIPS implementations outside FIPS mode.
2680 *) Transparently support X9.42 DH parameters when calling
2681 PEM_read_bio_DHparameters. This means existing applications can handle
2682 the new parameter format automatically.
2685 *) Initial experimental support for X9.42 DH parameter format: mainly
2686 to support use of 'q' parameter for RFC5114 parameters.
2689 *) Add DH parameters from RFC5114 including test data to dhtest.
2692 *) Support for automatic EC temporary key parameter selection. If enabled
2693 the most preferred EC parameters are automatically used instead of
2694 hardcoded fixed parameters. Now a server just has to call:
2695 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
2696 support ECDH and use the most appropriate parameters.
2699 *) Enhance and tidy EC curve and point format TLS extension code. Use
2700 static structures instead of allocation if default values are used.
2701 New ctrls to set curves we wish to support and to retrieve shared curves.
2702 Print out shared curves in s_server. New options to s_server and s_client
2703 to set list of supported curves.
2706 *) New ctrls to retrieve supported signature algorithms and
2707 supported curve values as an array of NIDs. Extend openssl utility
2708 to print out received values.
2711 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
2712 between NIDs and the more common NIST names such as "P-256". Enhance
2713 ecparam utility and ECC method to recognise the NIST names for curves.
2716 *) Enhance SSL/TLS certificate chain handling to support different
2717 chains for each certificate instead of one chain in the parent SSL_CTX.
2720 *) Support for fixed DH ciphersuite client authentication: where both
2721 server and client use DH certificates with common parameters.
2724 *) Support for fixed DH ciphersuites: those requiring DH server
2728 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
2730 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
2731 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
2732 X509_CINF_get_signature were reverted post internal team review.
2734 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
2736 *) Build fixes for the Windows and OpenVMS platforms
2737 [Matt Caswell and Richard Levitte]
2739 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
2741 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
2742 message can cause a segmentation fault in OpenSSL due to a NULL pointer
2743 dereference. This could lead to a Denial Of Service attack. Thanks to
2744 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
2748 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
2749 dtls1_buffer_record function under certain conditions. In particular this
2750 could occur if an attacker sent repeated DTLS records with the same
2751 sequence number but for the next epoch. The memory leak could be exploited
2752 by an attacker in a Denial of Service attack through memory exhaustion.
2753 Thanks to Chris Mueller for reporting this issue.
2757 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
2758 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
2759 method would be set to NULL which could later result in a NULL pointer
2760 dereference. Thanks to Frank Schmirler for reporting this issue.
2764 *) Abort handshake if server key exchange message is omitted for ephemeral
2767 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
2768 reporting this issue.
2772 *) Remove non-export ephemeral RSA code on client and server. This code
2773 violated the TLS standard by allowing the use of temporary RSA keys in
2774 non-export ciphersuites and could be used by a server to effectively
2775 downgrade the RSA key length used to a value smaller than the server
2776 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
2777 INRIA or reporting this issue.
2781 *) Fixed issue where DH client certificates are accepted without verification.
2782 An OpenSSL server will accept a DH certificate for client authentication
2783 without the certificate verify message. This effectively allows a client to
2784 authenticate without the use of a private key. This only affects servers
2785 which trust a client certificate authority which issues certificates
2786 containing DH keys: these are extremely rare and hardly ever encountered.
2787 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
2792 *) Ensure that the session ID context of an SSL is updated when its
2793 SSL_CTX is updated via SSL_set_SSL_CTX.
2795 The session ID context is typically set from the parent SSL_CTX,
2796 and can vary with the CTX.
2799 *) Fix various certificate fingerprint issues.
2801 By using non-DER or invalid encodings outside the signed portion of a
2802 certificate the fingerprint can be changed without breaking the signature.
2803 Although no details of the signed portion of the certificate can be changed
2804 this can cause problems with some applications: e.g. those using the
2805 certificate fingerprint for blacklists.
2807 1. Reject signatures with non zero unused bits.
2809 If the BIT STRING containing the signature has non zero unused bits reject
2810 the signature. All current signature algorithms require zero unused bits.
2812 2. Check certificate algorithm consistency.
2814 Check the AlgorithmIdentifier inside TBS matches the one in the
2815 certificate signature. NB: this will result in signature failure
2816 errors for some broken certificates.
2818 Thanks to Konrad Kraszewski from Google for reporting this issue.
2820 3. Check DSA/ECDSA signatures use DER.
2822 Re-encode DSA/ECDSA signatures and compare with the original received
2823 signature. Return an error if there is a mismatch.
2825 This will reject various cases including garbage after signature
2826 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
2827 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
2828 (negative or with leading zeroes).
2830 Further analysis was conducted and fixes were developed by Stephen Henson
2831 of the OpenSSL core team.
2836 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
2837 results on some platforms, including x86_64. This bug occurs at random
2838 with a very low probability, and is not known to be exploitable in any
2839 way, though its exact impact is difficult to determine. Thanks to Pieter
2840 Wuille (Blockstream) who reported this issue and also suggested an initial
2841 fix. Further analysis was conducted by the OpenSSL development team and
2842 Adam Langley of Google. The final fix was developed by Andy Polyakov of
2843 the OpenSSL core team.
2847 *) Do not resume sessions on the server if the negotiated protocol
2848 version does not match the session's version. Resuming with a different
2849 version, while not strictly forbidden by the RFC, is of questionable
2850 sanity and breaks all known clients.
2851 [David Benjamin, Emilia Käsper]
2853 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
2854 early CCS messages during renegotiation. (Note that because
2855 renegotiation is encrypted, this early CCS was not exploitable.)
2858 *) Tighten client-side session ticket handling during renegotiation:
2859 ensure that the client only accepts a session ticket if the server sends
2860 the extension anew in the ServerHello. Previously, a TLS client would
2861 reuse the old extension state and thus accept a session ticket if one was
2862 announced in the initial ServerHello.
2864 Similarly, ensure that the client requires a session ticket if one
2865 was advertised in the ServerHello. Previously, a TLS client would
2866 ignore a missing NewSessionTicket message.
2869 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
2871 *) SRTP Memory Leak.
2873 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
2874 sends a carefully crafted handshake message, to cause OpenSSL to fail
2875 to free up to 64k of memory causing a memory leak. This could be
2876 exploited in a Denial Of Service attack. This issue affects OpenSSL
2877 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
2878 whether SRTP is used or configured. Implementations of OpenSSL that
2879 have been compiled with OPENSSL_NO_SRTP defined are not affected.
2881 The fix was developed by the OpenSSL team.
2885 *) Session Ticket Memory Leak.
2887 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
2888 integrity of that ticket is first verified. In the event of a session
2889 ticket integrity check failing, OpenSSL will fail to free memory
2890 causing a memory leak. By sending a large number of invalid session
2891 tickets an attacker could exploit this issue in a Denial Of Service
2896 *) Build option no-ssl3 is incomplete.
2898 When OpenSSL is configured with "no-ssl3" as a build option, servers
2899 could accept and complete a SSL 3.0 handshake, and clients could be
2900 configured to send them.
2902 [Akamai and the OpenSSL team]
2904 *) Add support for TLS_FALLBACK_SCSV.
2905 Client applications doing fallback retries should call
2906 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
2908 [Adam Langley, Bodo Moeller]
2910 *) Add additional DigestInfo checks.
2912 Re-encode DigestInto in DER and check against the original when
2913 verifying RSA signature: this will reject any improperly encoded
2914 DigestInfo structures.
2916 Note: this is a precautionary measure and no attacks are currently known.
2920 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
2922 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
2923 SRP code can be overrun an internal buffer. Add sanity check that
2924 g, A, B < N to SRP code.
2926 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
2927 Group for discovering this issue.
2931 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
2932 TLS 1.0 instead of higher protocol versions when the ClientHello message
2933 is badly fragmented. This allows a man-in-the-middle attacker to force a
2934 downgrade to TLS 1.0 even if both the server and the client support a
2935 higher protocol version, by modifying the client's TLS records.
2937 Thanks to David Benjamin and Adam Langley (Google) for discovering and
2938 researching this issue.
2942 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
2943 to a denial of service attack. A malicious server can crash the client
2944 with a null pointer dereference (read) by specifying an anonymous (EC)DH
2945 ciphersuite and sending carefully crafted handshake messages.
2947 Thanks to Felix Gröbert (Google) for discovering and researching this
2952 *) By sending carefully crafted DTLS packets an attacker could cause openssl
2953 to leak memory. This can be exploited through a Denial of Service attack.
2954 Thanks to Adam Langley for discovering and researching this issue.
2958 *) An attacker can force openssl to consume large amounts of memory whilst
2959 processing DTLS handshake messages. This can be exploited through a
2960 Denial of Service attack.
2961 Thanks to Adam Langley for discovering and researching this issue.
2965 *) An attacker can force an error condition which causes openssl to crash
2966 whilst processing DTLS packets due to memory being freed twice. This
2967 can be exploited through a Denial of Service attack.
2968 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
2973 *) If a multithreaded client connects to a malicious server using a resumed
2974 session and the server sends an ec point format extension it could write
2975 up to 255 bytes to freed memory.
2977 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
2982 *) A malicious server can crash an OpenSSL client with a null pointer
2983 dereference (read) by specifying an SRP ciphersuite even though it was not
2984 properly negotiated with the client. This can be exploited through a
2985 Denial of Service attack.
2987 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
2988 discovering and researching this issue.
2992 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
2993 X509_name_oneline, X509_name_print_ex et al. to leak some information
2994 from the stack. Applications may be affected if they echo pretty printing
2995 output to the attacker.
2997 Thanks to Ivan Fratric (Google) for discovering this issue.
2999 [Emilia Käsper, and Steve Henson]
3001 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
3002 for corner cases. (Certain input points at infinity could lead to
3003 bogus results, with non-infinity inputs mapped to infinity too.)
3006 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
3008 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
3009 handshake can force the use of weak keying material in OpenSSL
3010 SSL/TLS clients and servers.
3012 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
3013 researching this issue. (CVE-2014-0224)
3014 [KIKUCHI Masashi, Steve Henson]
3016 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
3017 OpenSSL DTLS client the code can be made to recurse eventually crashing
3020 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
3022 [Imre Rad, Steve Henson]
3024 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
3025 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
3026 client or server. This is potentially exploitable to run arbitrary
3027 code on a vulnerable client or server.
3029 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
3030 [Jüri Aedla, Steve Henson]
3032 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
3033 are subject to a denial of service attack.
3035 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
3036 this issue. (CVE-2014-3470)
3037 [Felix Gröbert, Ivan Fratric, Steve Henson]
3039 *) Harmonize version and its documentation. -f flag is used to display
3041 [mancha <mancha1@zoho.com>]
3043 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
3044 in i2d_ECPrivateKey.
3045 [mancha <mancha1@zoho.com>]
3047 *) Fix some double frees. These are not thought to be exploitable.
3048 [mancha <mancha1@zoho.com>]
3050 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
3052 *) A missing bounds check in the handling of the TLS heartbeat extension
3053 can be used to reveal up to 64k of memory to a connected client or
3056 Thanks for Neel Mehta of Google Security for discovering this bug and to
3057 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
3058 preparing the fix (CVE-2014-0160)
3059 [Adam Langley, Bodo Moeller]
3061 *) Fix for the attack described in the paper "Recovering OpenSSL
3062 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
3063 by Yuval Yarom and Naomi Benger. Details can be obtained from:
3064 http://eprint.iacr.org/2014/140
3066 Thanks to Yuval Yarom and Naomi Benger for discovering this
3067 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
3068 [Yuval Yarom and Naomi Benger]
3070 *) TLS pad extension: draft-agl-tls-padding-03
3072 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
3073 TLS client Hello record length value would otherwise be > 255 and
3074 less that 512 pad with a dummy extension containing zeroes so it
3075 is at least 512 bytes long.
3077 [Adam Langley, Steve Henson]
3079 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
3081 *) Fix for TLS record tampering bug. A carefully crafted invalid
3082 handshake could crash OpenSSL with a NULL pointer exception.
3083 Thanks to Anton Johansson for reporting this issues.
3086 *) Keep original DTLS digest and encryption contexts in retransmission
3087 structures so we can use the previous session parameters if they need
3088 to be resent. (CVE-2013-6450)
3091 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
3092 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
3093 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
3094 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
3095 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
3096 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
3097 [Rob Stradling, Adam Langley]
3099 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
3101 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
3102 supporting platforms or when small records were transferred.
3103 [Andy Polyakov, Steve Henson]
3105 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
3107 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
3109 This addresses the flaw in CBC record processing discovered by
3110 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
3111 at: http://www.isg.rhul.ac.uk/tls/
3113 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3114 Security Group at Royal Holloway, University of London
3115 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
3116 Emilia Käsper for the initial patch.
3118 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
3120 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
3121 ciphersuites which can be exploited in a denial of service attack.
3122 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
3123 and detecting this bug and to Wolfgang Ettlinger
3124 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
3128 *) Return an error when checking OCSP signatures when key is NULL.
3129 This fixes a DoS attack. (CVE-2013-0166)
3132 *) Make openssl verify return errors.
3133 [Chris Palmer <palmer@google.com> and Ben Laurie]
3135 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
3136 the right response is stapled. Also change SSL_get_certificate()
3137 so it returns the certificate actually sent.
3138 See http://rt.openssl.org/Ticket/Display.html?id=2836.
3139 [Rob Stradling <rob.stradling@comodo.com>]
3141 *) Fix possible deadlock when decoding public keys.
3144 *) Don't use TLS 1.0 record version number in initial client hello
3148 Changes between 1.0.1b and 1.0.1c [10 May 2012]
3150 *) Sanity check record length before skipping explicit IV in TLS
3151 1.2, 1.1 and DTLS to fix DoS attack.
3153 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
3154 fuzzing as a service testing platform.
3158 *) Initialise tkeylen properly when encrypting CMS messages.
3159 Thanks to Solar Designer of Openwall for reporting this issue.
3162 *) In FIPS mode don't try to use composite ciphers as they are not
3166 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
3168 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
3169 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
3170 mean any application compiled against OpenSSL 1.0.0 headers setting
3171 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling
3172 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
3173 0x10000000L Any application which was previously compiled against
3174 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
3175 will need to be recompiled as a result. Letting be results in
3176 inability to disable specifically TLS 1.1 and in client context,
3177 in unlike event, limit maximum offered version to TLS 1.0 [see below].
3180 *) In order to ensure interoperability SSL_OP_NO_protocolX does not
3181 disable just protocol X, but all protocols above X *if* there are
3182 protocols *below* X still enabled. In more practical terms it means
3183 that if application wants to disable TLS1.0 in favor of TLS1.1 and
3184 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
3185 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
3189 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
3191 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
3192 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
3193 in CRYPTO_realloc_clean.
3195 Thanks to Tavis Ormandy, Google Security Team, for discovering this
3196 issue and to Adam Langley <agl@chromium.org> for fixing it.
3198 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
3200 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
3203 *) Workarounds for some broken servers that "hang" if a client hello
3204 record length exceeds 255 bytes.
3206 1. Do not use record version number > TLS 1.0 in initial client
3207 hello: some (but not all) hanging servers will now work.
3208 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
3209 the number of ciphers sent in the client hello. This should be
3210 set to an even number, such as 50, for example by passing:
3211 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
3212 Most broken servers should now work.
3213 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
3214 TLS 1.2 client support entirely.
3217 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
3220 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
3222 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
3223 STRING form instead of a DigestInfo.
3226 *) The format used for MDC2 RSA signatures is inconsistent between EVP
3227 and the RSA_sign/RSA_verify functions. This was made more apparent when
3228 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
3229 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
3230 the correct format in RSA_verify so both forms transparently work.
3233 *) Some servers which support TLS 1.0 can choke if we initially indicate
3234 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
3235 encrypted premaster secret. As a workaround use the maximum permitted
3236 client version in client hello, this should keep such servers happy
3237 and still work with previous versions of OpenSSL.
3240 *) Add support for TLS/DTLS heartbeats.
3241 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3243 *) Add support for SCTP.
3244 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3246 *) Improved PRNG seeding for VOS.
3247 [Paul Green <Paul.Green@stratus.com>]
3249 *) Extensive assembler packs updates, most notably:
3251 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
3252 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
3253 - x86_64: bit-sliced AES implementation;
3254 - ARM: NEON support, contemporary platforms optimizations;
3255 - s390x: z196 support;
3256 - *: GHASH and GF(2^m) multiplication implementations;
3260 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
3261 (removal of unnecessary code)
3262 [Peter Sylvester <peter.sylvester@edelweb.fr>]
3264 *) Add TLS key material exporter from RFC 5705.
3267 *) Add DTLS-SRTP negotiation from RFC 5764.
3270 *) Add Next Protocol Negotiation,
3271 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
3272 disabled with a no-npn flag to config or Configure. Code donated
3274 [Adam Langley <agl@google.com> and Ben Laurie]
3276 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
3277 NIST-P256, NIST-P521, with constant-time single point multiplication on
3278 typical inputs. Compiler support for the nonstandard type __uint128_t is
3279 required to use this (present in gcc 4.4 and later, for 64-bit builds).
3280 Code made available under Apache License version 2.0.
3282 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
3283 line to include this in your build of OpenSSL, and run "make depend" (or
3284 "make update"). This enables the following EC_METHODs:
3286 EC_GFp_nistp224_method()
3287 EC_GFp_nistp256_method()
3288 EC_GFp_nistp521_method()
3290 EC_GROUP_new_by_curve_name() will automatically use these (while
3291 EC_GROUP_new_curve_GFp() currently prefers the more flexible
3293 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
3295 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
3296 all platforms. Move ssize_t definition from e_os.h to the public
3297 header file e_os2.h as it now appears in public header file cms.h
3300 *) New -sigopt option to the ca, req and x509 utilities. Additional
3301 signature parameters can be passed using this option and in
3305 *) Add RSA PSS signing function. This will generate and set the
3306 appropriate AlgorithmIdentifiers for PSS based on those in the
3307 corresponding EVP_MD_CTX structure. No application support yet.
3310 *) Support for companion algorithm specific ASN1 signing routines.
3311 New function ASN1_item_sign_ctx() signs a pre-initialised
3312 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
3313 the appropriate parameters.
3316 *) Add new algorithm specific ASN1 verification initialisation function
3317 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
3318 handling will be the same no matter what EVP_PKEY_METHOD is used.
3319 Add a PSS handler to support verification of PSS signatures: checked
3320 against a number of sample certificates.
3323 *) Add signature printing for PSS. Add PSS OIDs.
3324 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
3326 *) Add algorithm specific signature printing. An individual ASN1 method
3327 can now print out signatures instead of the standard hex dump.
3329 More complex signatures (e.g. PSS) can print out more meaningful
3330 information. Include DSA version that prints out the signature
3334 *) Password based recipient info support for CMS library: implementing
3338 *) Split password based encryption into PBES2 and PBKDF2 functions. This
3339 neatly separates the code into cipher and PBE sections and is required
3340 for some algorithms that split PBES2 into separate pieces (such as
3341 password based CMS).
3344 *) Session-handling fixes:
3345 - Fix handling of connections that are resuming with a session ID,
3346 but also support Session Tickets.
3347 - Fix a bug that suppressed issuing of a new ticket if the client
3348 presented a ticket with an expired session.
3349 - Try to set the ticket lifetime hint to something reasonable.
3350 - Make tickets shorter by excluding irrelevant information.
3351 - On the client side, don't ignore renewed tickets.
3352 [Adam Langley, Bodo Moeller (Google)]
3354 *) Fix PSK session representation.
3357 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
3359 This work was sponsored by Intel.
3362 *) Add GCM support to TLS library. Some custom code is needed to split
3363 the IV between the fixed (from PRF) and explicit (from TLS record)
3364 portions. This adds all GCM ciphersuites supported by RFC5288 and
3365 RFC5289. Generalise some AES* cipherstrings to include GCM and
3366 add a special AESGCM string for GCM only.
3369 *) Expand range of ctrls for AES GCM. Permit setting invocation
3370 field on decrypt and retrieval of invocation field only on encrypt.
3373 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
3374 As required by RFC5289 these ciphersuites cannot be used if for
3375 versions of TLS earlier than 1.2.
3378 *) For FIPS capable OpenSSL interpret a NULL default public key method
3379 as unset and return the appropriate default but do *not* set the default.
3380 This means we can return the appropriate method in applications that
3381 switch between FIPS and non-FIPS modes.
3384 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
3385 ENGINE is used then we cannot handle that in the FIPS module so we
3386 keep original code iff non-FIPS operations are allowed.
3389 *) Add -attime option to openssl utilities.
3390 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
3392 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
3395 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
3396 FIPS EC methods unconditionally for now.
3399 *) New build option no-ec2m to disable characteristic 2 code.
3402 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
3403 all cases can be covered as some introduce binary incompatibilities.
3406 *) Redirect RSA operations to FIPS module including keygen,
3407 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3410 *) Add similar low level API blocking to ciphers.
3413 *) Low level digest APIs are not approved in FIPS mode: any attempt
3414 to use these will cause a fatal error. Applications that *really* want
3415 to use them can use the private_* version instead.
3418 *) Redirect cipher operations to FIPS module for FIPS builds.
3421 *) Redirect digest operations to FIPS module for FIPS builds.
3424 *) Update build system to add "fips" flag which will link in fipscanister.o
3425 for static and shared library builds embedding a signature if needed.
3428 *) Output TLS supported curves in preference order instead of numerical
3429 order. This is currently hardcoded for the highest order curves first.
3430 This should be configurable so applications can judge speed vs strength.
3433 *) Add TLS v1.2 server support for client authentication.
3436 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3440 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3441 FIPS modules versions.
3444 *) Add TLS v1.2 client side support for client authentication. Keep cache
3445 of handshake records longer as we don't know the hash algorithm to use
3446 until after the certificate request message is received.
3449 *) Initial TLS v1.2 client support. Add a default signature algorithms
3450 extension including all the algorithms we support. Parse new signature
3451 format in client key exchange. Relax some ECC signing restrictions for
3452 TLS v1.2 as indicated in RFC5246.
3455 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3456 to new signature format when needed using client digest preference.
3457 All server ciphersuites should now work correctly in TLS v1.2. No client
3458 support yet and no support for client certificates.
3461 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3462 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3463 ciphersuites. At present only RSA key exchange ciphersuites work with
3464 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
3465 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
3466 and version checking.
3469 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
3470 with this defined it will not be affected by any changes to ssl internal
3471 structures. Add several utility functions to allow openssl application
3472 to work with OPENSSL_NO_SSL_INTERN defined.
3475 *) A long standing patch to add support for SRP from EdelWeb (Peter
3476 Sylvester and Christophe Renou) was integrated.
3477 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
3478 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
3481 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
3484 *) Permit abbreviated handshakes when renegotiating using the function
3485 SSL_renegotiate_abbreviated().
3486 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3488 *) Add call to ENGINE_register_all_complete() to
3489 ENGINE_load_builtin_engines(), so some implementations get used
3490 automatically instead of needing explicit application support.
3493 *) Add support for TLS key exporter as described in RFC5705.
3494 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
3496 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
3497 a few changes are required:
3499 Add SSL_OP_NO_TLSv1_1 flag.
3500 Add TLSv1_1 methods.
3501 Update version checking logic to handle version 1.1.
3502 Add explicit IV handling (ported from DTLS code).
3503 Add command line options to s_client/s_server.
3506 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
3508 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
3509 in CMS and PKCS7 code. When RSA decryption fails use a random key for
3510 content decryption and always return the same error. Note: this attack
3511 needs on average 2^20 messages so it only affects automated senders. The
3512 old behaviour can be re-enabled in the CMS code by setting the
3513 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
3514 an MMA defence is not necessary.
3515 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
3516 this issue. (CVE-2012-0884)
3519 *) Fix CVE-2011-4619: make sure we really are receiving a
3520 client hello before rejecting multiple SGC restarts. Thanks to
3521 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
3524 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
3526 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
3527 Thanks to Antonio Martin, Enterprise Secure Access Research and
3528 Development, Cisco Systems, Inc. for discovering this bug and
3529 preparing a fix. (CVE-2012-0050)
3532 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
3534 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
3535 of the Vaudenay padding oracle attack on CBC mode encryption
3536 which enables an efficient plaintext recovery attack against
3537 the OpenSSL implementation of DTLS. Their attack exploits timing
3538 differences arising during decryption processing. A research
3539 paper describing this attack can be found at:
3540 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
3541 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3542 Security Group at Royal Holloway, University of London
3543 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
3544 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
3545 for preparing the fix. (CVE-2011-4108)
3546 [Robin Seggelmann, Michael Tuexen]
3548 *) Clear bytes used for block padding of SSL 3.0 records.
3550 [Adam Langley (Google)]
3552 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
3553 Kadianakis <desnacked@gmail.com> for discovering this issue and
3554 Adam Langley for preparing the fix. (CVE-2011-4619)
3555 [Adam Langley (Google)]
3557 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
3558 [Andrey Kulikov <amdeich@gmail.com>]
3560 *) Prevent malformed RFC3779 data triggering an assertion failure.
3561 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
3562 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
3563 [Rob Austein <sra@hactrn.net>]
3565 *) Improved PRNG seeding for VOS.
3566 [Paul Green <Paul.Green@stratus.com>]
3568 *) Fix ssl_ciph.c set-up race.
3569 [Adam Langley (Google)]
3571 *) Fix spurious failures in ecdsatest.c.
3572 [Emilia Käsper (Google)]
3574 *) Fix the BIO_f_buffer() implementation (which was mixing different
3575 interpretations of the '..._len' fields).
3576 [Adam Langley (Google)]
3578 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
3579 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
3580 threads won't reuse the same blinding coefficients.
3582 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
3583 lock to call BN_BLINDING_invert_ex, and avoids one use of
3584 BN_BLINDING_update for each BN_BLINDING structure (previously,
3585 the last update always remained unused).
3586 [Emilia Käsper (Google)]
3588 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
3589 [Bob Buckholz (Google)]
3591 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
3593 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3594 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3595 [Kaspar Brand <ossl@velox.ch>]
3597 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3598 for multi-threaded use of ECDH. (CVE-2011-3210)
3599 [Adam Langley (Google)]
3601 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3604 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3605 signature public key algorithm by using OID xref utilities instead.
3606 Before this you could only use some ECC ciphersuites with SHA1 only.
3609 *) Add protection against ECDSA timing attacks as mentioned in the paper
3610 by Billy Bob Brumley and Nicola Tuveri, see:
3612 http://eprint.iacr.org/2011/232.pdf
3614 [Billy Bob Brumley and Nicola Tuveri]
3616 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3618 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3619 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3621 *) Fix bug in string printing code: if *any* escaping is enabled we must
3622 escape the escape character (backslash) or the resulting string is
3626 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
3628 *) Disable code workaround for ancient and obsolete Netscape browsers
3629 and servers: an attacker can use it in a ciphersuite downgrade attack.
3630 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
3633 *) Fixed J-PAKE implementation error, originally discovered by
3634 Sebastien Martini, further info and confirmation from Stefan
3635 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
3638 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
3640 *) Fix extension code to avoid race conditions which can result in a buffer
3641 overrun vulnerability: resumed sessions must not be modified as they can
3642 be shared by multiple threads. CVE-2010-3864
3645 *) Fix WIN32 build system to correctly link an ENGINE directory into
3649 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
3651 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
3653 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
3655 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
3657 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
3658 context. The operation can be customised via the ctrl mechanism in
3659 case ENGINEs want to include additional functionality.
3662 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
3665 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
3666 output hashes compatible with older versions of OpenSSL.
3667 [Willy Weisz <weisz@vcpc.univie.ac.at>]
3669 *) Fix compression algorithm handling: if resuming a session use the
3670 compression algorithm of the resumed session instead of determining
3671 it from client hello again. Don't allow server to change algorithm.
3674 *) Add load_crls() function to apps tidying load_certs() too. Add option
3675 to verify utility to allow additional CRLs to be included.
3678 *) Update OCSP request code to permit adding custom headers to the request:
3679 some responders need this.
3682 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
3684 [Julia Lawall <julia@diku.dk>]
3686 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
3687 needlessly dereferenced structures, used obsolete functions and
3688 didn't handle all updated verify codes correctly.
3691 *) Disable MD2 in the default configuration.
3694 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
3695 indicate the initial BIO being pushed or popped. This makes it possible
3696 to determine whether the BIO is the one explicitly called or as a result
3697 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
3698 it handles reference counts correctly and doesn't zero out the I/O bio
3699 when it is not being explicitly popped. WARNING: applications which
3700 included workarounds for the old buggy behaviour will need to be modified
3701 or they could free up already freed BIOs.
3704 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
3705 renaming to all platforms (within the 0.9.8 branch, this was
3706 done conditionally on Netware platforms to avoid a name clash).
3707 [Guenter <lists@gknw.net>]
3709 *) Add ECDHE and PSK support to DTLS.
3710 [Michael Tuexen <tuexen@fh-muenster.de>]
3712 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
3716 *) Add "missing" function EVP_MD_flags() (without this the only way to
3717 retrieve a digest flags is by accessing the structure directly. Update
3718 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
3719 or cipher is registered as in the "from" argument. Print out all
3720 registered digests in the dgst usage message instead of manually
3721 attempting to work them out.
3724 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
3725 this allows the use of compression and extensions. Change default cipher
3726 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
3727 by default unless an application cipher string requests it.
3730 *) Alter match criteria in PKCS12_parse(). It used to try to use local
3731 key ids to find matching certificates and keys but some PKCS#12 files
3732 don't follow the (somewhat unwritten) rules and this strategy fails.
3733 Now just gather all certificates together and the first private key
3734 then look for the first certificate that matches the key.
3737 *) Support use of registered digest and cipher names for dgst and cipher
3738 commands instead of having to add each one as a special case. So now
3745 openssl dgst -sha256 foo
3747 and this works for ENGINE based algorithms too.
3751 *) Update Gost ENGINE to support parameter files.
3752 [Victor B. Wagner <vitus@cryptocom.ru>]
3754 *) Support GeneralizedTime in ca utility.
3755 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
3757 *) Enhance the hash format used for certificate directory links. The new
3758 form uses the canonical encoding (meaning equivalent names will work
3759 even if they aren't identical) and uses SHA1 instead of MD5. This form
3760 is incompatible with the older format and as a result c_rehash should
3761 be used to rebuild symbolic links.
3764 *) Make PKCS#8 the default write format for private keys, replacing the
3765 traditional format. This form is standardised, more secure and doesn't
3766 include an implicit MD5 dependency.
3769 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
3770 committed to OpenSSL should pass this lot as a minimum.
3773 *) Add session ticket override functionality for use by EAP-FAST.
3774 [Jouni Malinen <j@w1.fi>]
3776 *) Modify HMAC functions to return a value. Since these can be implemented
3777 in an ENGINE errors can occur.
3780 *) Type-checked OBJ_bsearch_ex.
3783 *) Type-checked OBJ_bsearch. Also some constification necessitated
3784 by type-checking. Still to come: TXT_DB, bsearch(?),
3785 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
3789 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
3790 seconds to a tm structure directly, instead of going through OS
3791 specific date routines. This avoids any issues with OS routines such
3792 as the year 2038 bug. New *_adj() functions for ASN1 time structures
3793 and X509_time_adj_ex() to cover the extended range. The existing
3794 X509_time_adj() is still usable and will no longer have any date issues.
3797 *) Delta CRL support. New use deltas option which will attempt to locate
3798 and search any appropriate delta CRLs available.
3800 This work was sponsored by Google.
3803 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
3804 code and add additional score elements. Validate alternate CRL paths
3805 as part of the CRL checking and indicate a new error "CRL path validation
3806 error" in this case. Applications wanting additional details can use
3807 the verify callback and check the new "parent" field. If this is not
3808 NULL CRL path validation is taking place. Existing applications won't
3809 see this because it requires extended CRL support which is off by
3812 This work was sponsored by Google.
3815 *) Support for freshest CRL extension.
3817 This work was sponsored by Google.
3820 *) Initial indirect CRL support. Currently only supported in the CRLs
3821 passed directly and not via lookup. Process certificate issuer
3822 CRL entry extension and lookup CRL entries by bother issuer name
3823 and serial number. Check and process CRL issuer entry in IDP extension.
3825 This work was sponsored by Google.
3828 *) Add support for distinct certificate and CRL paths. The CRL issuer
3829 certificate is validated separately in this case. Only enabled if
3830 an extended CRL support flag is set: this flag will enable additional
3831 CRL functionality in future.
3833 This work was sponsored by Google.
3836 *) Add support for policy mappings extension.
3838 This work was sponsored by Google.
3841 *) Fixes to pathlength constraint, self issued certificate handling,
3842 policy processing to align with RFC3280 and PKITS tests.
3844 This work was sponsored by Google.
3847 *) Support for name constraints certificate extension. DN, email, DNS
3848 and URI types are currently supported.
3850 This work was sponsored by Google.
3853 *) To cater for systems that provide a pointer-based thread ID rather
3854 than numeric, deprecate the current numeric thread ID mechanism and
3855 replace it with a structure and associated callback type. This
3856 mechanism allows a numeric "hash" to be extracted from a thread ID in
3857 either case, and on platforms where pointers are larger than 'long',
3858 mixing is done to help ensure the numeric 'hash' is usable even if it
3859 can't be guaranteed unique. The default mechanism is to use "&errno"
3860 as a pointer-based thread ID to distinguish between threads.
3862 Applications that want to provide their own thread IDs should now use
3863 CRYPTO_THREADID_set_callback() to register a callback that will call
3864 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
3866 Note that ERR_remove_state() is now deprecated, because it is tied
3867 to the assumption that thread IDs are numeric. ERR_remove_state(0)
3868 to free the current thread's error state should be replaced by
3869 ERR_remove_thread_state(NULL).
3871 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
3872 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
3873 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
3874 application was previously providing a numeric thread callback that
3875 was inappropriate for distinguishing threads, then uniqueness might
3876 have been obtained with &errno that happened immediately in the
3877 intermediate development versions of OpenSSL; this is no longer the
3878 case, the numeric thread callback will now override the automatic use
3880 [Geoff Thorpe, with help from Bodo Moeller]
3882 *) Initial support for different CRL issuing certificates. This covers a
3883 simple case where the self issued certificates in the chain exist and
3884 the real CRL issuer is higher in the existing chain.
3886 This work was sponsored by Google.
3889 *) Removed effectively defunct crypto/store from the build.
3892 *) Revamp of STACK to provide stronger type-checking. Still to come:
3893 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
3894 ASN1_STRING, CONF_VALUE.
3897 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
3898 RAM on SSL connections. This option can save about 34k per idle SSL.
3901 *) Revamp of LHASH to provide stronger type-checking. Still to come:
3902 STACK, TXT_DB, bsearch, qsort.
3905 *) Initial support for Cryptographic Message Syntax (aka CMS) based
3906 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
3907 support for data, signedData, compressedData, digestedData and
3908 encryptedData, envelopedData types included. Scripts to check against
3909 RFC4134 examples draft and interop and consistency checks of many
3910 content types and variants.
3913 *) Add options to enc utility to support use of zlib compression BIO.
3916 *) Extend mk1mf to support importing of options and assembly language
3917 files from Configure script, currently only included in VC-WIN32.
3918 The assembly language rules can now optionally generate the source
3919 files from the associated perl scripts.
3922 *) Implement remaining functionality needed to support GOST ciphersuites.
3923 Interop testing has been performed using CryptoPro implementations.
3924 [Victor B. Wagner <vitus@cryptocom.ru>]
3926 *) s390x assembler pack.
3929 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
3933 *) Implement Opaque PRF Input TLS extension as specified in
3934 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
3935 official specification yet and no extension type assignment by
3936 IANA exists, this extension (for now) will have to be explicitly
3937 enabled when building OpenSSL by providing the extension number
3938 to use. For example, specify an option
3940 -DTLSEXT_TYPE_opaque_prf_input=0x9527
3942 to the "config" or "Configure" script to enable the extension,
3943 assuming extension number 0x9527 (which is a completely arbitrary
3944 and unofficial assignment based on the MD5 hash of the Internet
3945 Draft). Note that by doing so, you potentially lose
3946 interoperability with other TLS implementations since these might
3947 be using the same extension number for other purposes.
3949 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
3950 opaque PRF input value to use in the handshake. This will create
3951 an internal copy of the length-'len' string at 'src', and will
3952 return non-zero for success.
3954 To get more control and flexibility, provide a callback function
3957 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
3958 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
3962 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
3965 Callback function 'cb' will be called in handshakes, and is
3966 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
3967 Argument 'arg' is for application purposes (the value as given to
3968 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
3969 be provided to the callback function). The callback function
3970 has to return non-zero to report success: usually 1 to use opaque
3971 PRF input just if possible, or 2 to enforce use of the opaque PRF
3972 input. In the latter case, the library will abort the handshake
3973 if opaque PRF input is not successfully negotiated.
3975 Arguments 'peerinput' and 'len' given to the callback function
3976 will always be NULL and 0 in the case of a client. A server will
3977 see the client's opaque PRF input through these variables if
3978 available (NULL and 0 otherwise). Note that if the server
3979 provides an opaque PRF input, the length must be the same as the
3980 length of the client's opaque PRF input.
3982 Note that the callback function will only be called when creating
3983 a new session (session resumption can resume whatever was
3984 previously negotiated), and will not be called in SSL 2.0
3985 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
3986 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
3987 for applications that need to enforce opaque PRF input.
3991 *) Update ssl code to support digests other than SHA1+MD5 for handshake
3994 [Victor B. Wagner <vitus@cryptocom.ru>]
3996 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3997 RFC4507bis. The encrypted ticket format is an encrypted encoded
3998 SSL_SESSION structure, that way new session features are automatically
4001 If a client application caches session in an SSL_SESSION structure
4002 support is transparent because tickets are now stored in the encoded
4005 The SSL_CTX structure automatically generates keys for ticket
4006 protection in servers so again support should be possible
4007 with no application modification.
4009 If a client or server wishes to disable RFC4507 support then the option
4010 SSL_OP_NO_TICKET can be set.
4012 Add a TLS extension debugging callback to allow the contents of any client
4013 or server extensions to be examined.
4015 This work was sponsored by Google.
4018 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
4019 OpenSSL should now compile cleanly on gcc 4.2
4020 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
4022 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
4023 support including streaming MAC support: this is required for GOST
4024 ciphersuite support.
4025 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
4027 *) Add option -stream to use PKCS#7 streaming in smime utility. New
4028 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
4029 to output in BER and PEM format.
4032 *) Experimental support for use of HMAC via EVP_PKEY interface. This
4033 allows HMAC to be handled via the EVP_DigestSign*() interface. The
4034 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
4035 ENGINE support for HMAC keys which are unextractable. New -mac and
4036 -macopt options to dgst utility.
4039 *) New option -sigopt to dgst utility. Update dgst to use
4040 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
4041 alternative signing parameters such as X9.31 or PSS in the dgst
4045 *) Change ssl_cipher_apply_rule(), the internal function that does
4046 the work each time a ciphersuite string requests enabling
4047 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
4048 removing ("!foo+bar") a class of ciphersuites: Now it maintains
4049 the order of disabled ciphersuites such that those ciphersuites
4050 that most recently went from enabled to disabled not only stay
4051 in order with respect to each other, but also have higher priority
4052 than other disabled ciphersuites the next time ciphersuites are
4055 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
4056 the same ciphersuites as with "HIGH" alone, but in a specific
4057 order where the PSK ciphersuites come first (since they are the
4058 most recently disabled ciphersuites when "HIGH" is parsed).
4060 Also, change ssl_create_cipher_list() (using this new
4061 functionality) such that between otherwise identical
4062 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in
4066 *) Change ssl_create_cipher_list() so that it automatically
4067 arranges the ciphersuites in reasonable order before starting
4068 to process the rule string. Thus, the definition for "DEFAULT"
4069 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
4070 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
4071 This makes it much easier to arrive at a reasonable default order
4072 in applications for which anonymous ciphers are OK (meaning
4073 that you can't actually use DEFAULT).
4074 [Bodo Moeller; suggested by Victor Duchovni]
4076 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
4077 processing) into multiple integers instead of setting
4078 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
4079 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
4080 (These masks as well as the individual bit definitions are hidden
4081 away into the non-exported interface ssl/ssl_locl.h, so this
4082 change to the definition of the SSL_CIPHER structure shouldn't
4083 affect applications.) This give us more bits for each of these
4084 categories, so there is no longer a need to coagulate AES128 and
4085 AES256 into a single algorithm bit, and to coagulate Camellia128
4086 and Camellia256 into a single algorithm bit, which has led to all
4089 Thus, among other things, the kludge introduced in 0.9.7m and
4090 0.9.8e for masking out AES256 independently of AES128 or masking
4091 out Camellia256 independently of AES256 is not needed here in 0.9.9.
4093 With the change, we also introduce new ciphersuite aliases that
4094 so far were missing: "AES128", "AES256", "CAMELLIA128", and
4098 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
4099 Use the leftmost N bytes of the signature input if the input is
4100 larger than the prime q (with N being the size in bytes of q).
4103 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
4104 it yet and it is largely untested.
4107 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
4110 *) Initial incomplete changes to avoid need for function casts in OpenSSL
4111 some compilers (gcc 4.2 and later) reject their use. Safestack is
4112 reimplemented. Update ASN1 to avoid use of legacy functions.
4115 *) Win32/64 targets are linked with Winsock2.
4118 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
4119 to external functions. This can be used to increase CRL handling
4120 efficiency especially when CRLs are very large by (for example) storing
4121 the CRL revoked certificates in a database.
4124 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
4125 new CRLs added to a directory can be used. New command line option
4126 -verify_return_error to s_client and s_server. This causes real errors
4127 to be returned by the verify callback instead of carrying on no matter
4128 what. This reflects the way a "real world" verify callback would behave.
4131 *) GOST engine, supporting several GOST algorithms and public key formats.
4132 Kindly donated by Cryptocom.
4135 *) Partial support for Issuing Distribution Point CRL extension. CRLs
4136 partitioned by DP are handled but no indirect CRL or reason partitioning
4137 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
4138 selected via a scoring technique which handles IDP and AKID in CRLs.
4141 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
4142 will ultimately be used for all verify operations: this will remove the
4143 X509_STORE dependency on certificate verification and allow alternative
4144 lookup methods. X509_STORE based implementations of these two callbacks.
4147 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
4148 Modify get_crl() to find a valid (unexpired) CRL if possible.
4151 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
4152 this would be called X509_CRL_cmp() but that name is already used by
4153 a function that just compares CRL issuer names. Cache several CRL
4154 extensions in X509_CRL structure and cache CRLDP in X509.
4157 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
4158 this maps equivalent X509_NAME structures into a consistent structure.
4159 Name comparison can then be performed rapidly using memcmp().
4162 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
4166 *) Allow digests to supply their own micalg string for S/MIME type using
4167 the ctrl EVP_MD_CTRL_MICALG.
4170 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
4171 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
4172 ctrl. It can then customise the structure before and/or after signing
4176 *) New function OBJ_add_sigid() to allow application defined signature OIDs
4177 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
4178 to free up any added signature OIDs.
4181 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
4182 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
4183 digest and cipher tables. New options added to openssl utility:
4184 list-message-digest-algorithms and list-cipher-algorithms.
4187 *) Change the array representation of binary polynomials: the list
4188 of degrees of non-zero coefficients is now terminated with -1.
4189 Previously it was terminated with 0, which was also part of the
4190 value; thus, the array representation was not applicable to
4191 polynomials where t^0 has coefficient zero. This change makes
4192 the array representation useful in a more general context.
4195 *) Various modifications and fixes to SSL/TLS cipher string
4196 handling. For ECC, the code now distinguishes between fixed ECDH
4197 with RSA certificates on the one hand and with ECDSA certificates
4198 on the other hand, since these are separate ciphersuites. The
4199 unused code for Fortezza ciphersuites has been removed.
4201 For consistency with EDH, ephemeral ECDH is now called "EECDH"
4202 (not "ECDHE"). For consistency with the code for DH
4203 certificates, use of ECDH certificates is now considered ECDH
4204 authentication, not RSA or ECDSA authentication (the latter is
4205 merely the CA's signing algorithm and not actively used in the
4208 The temporary ciphersuite alias "ECCdraft" is no longer
4209 available, and ECC ciphersuites are no longer excluded from "ALL"
4210 and "DEFAULT". The following aliases now exist for RFC 4492
4211 ciphersuites, most of these by analogy with the DH case:
4213 kECDHr - ECDH cert, signed with RSA
4214 kECDHe - ECDH cert, signed with ECDSA
4215 kECDH - ECDH cert (signed with either RSA or ECDSA)
4216 kEECDH - ephemeral ECDH
4217 ECDH - ECDH cert or ephemeral ECDH
4223 AECDH - anonymous ECDH
4224 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
4228 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
4229 Use correct micalg parameters depending on digest(s) in signed message.
4232 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
4233 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
4236 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
4237 an engine to register a method. Add ENGINE lookups for methods and
4238 functional reference processing.
4241 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of
4242 EVP_{Sign,Verify}* which allow an application to customise the signature
4246 *) New -resign option to smime utility. This adds one or more signers
4247 to an existing PKCS#7 signedData structure. Also -md option to use an
4248 alternative message digest algorithm for signing.
4251 *) Tidy up PKCS#7 routines and add new functions to make it easier to
4252 create PKCS7 structures containing multiple signers. Update smime
4253 application to support multiple signers.
4256 *) New -macalg option to pkcs12 utility to allow setting of an alternative
4260 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
4261 Reorganize PBE internals to lookup from a static table using NIDs,
4262 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
4263 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
4264 PRF which will be automatically used with PBES2.
4267 *) Replace the algorithm specific calls to generate keys in "req" with the
4271 *) Update PKCS#7 enveloped data routines to use new API. This is now
4272 supported by any public key method supporting the encrypt operation. A
4273 ctrl is added to allow the public key algorithm to examine or modify
4274 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
4278 *) Add a ctrl to asn1 method to allow a public key algorithm to express
4279 a default digest type to use. In most cases this will be SHA1 but some
4280 algorithms (such as GOST) need to specify an alternative digest. The
4281 return value indicates how strong the preference is 1 means optional and
4282 2 is mandatory (that is it is the only supported type). Modify
4283 ASN1_item_sign() to accept a NULL digest argument to indicate it should
4284 use the default md. Update openssl utilities to use the default digest
4285 type for signing if it is not explicitly indicated.
4288 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
4289 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
4290 signing method from the key type. This effectively removes the link
4291 between digests and public key types.
4294 *) Add an OID cross reference table and utility functions. Its purpose is to
4295 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
4296 rsaEncryption. This will allow some of the algorithm specific hackery
4297 needed to use the correct OID to be removed.
4300 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
4301 structures for PKCS7_sign(). They are now set up by the relevant public
4305 *) Add provisional EC pkey method with support for ECDSA and ECDH.
4308 *) Add support for key derivation (agreement) in the API, DH method and
4312 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
4313 public and private key formats. As a side effect these add additional
4314 command line functionality not previously available: DSA signatures can be
4315 generated and verified using pkeyutl and DH key support and generation in
4320 [Oliver Tappe <zooey@hirschkaefer.de>]
4322 *) New make target "install_html_docs" installs HTML renditions of the
4324 [Oliver Tappe <zooey@hirschkaefer.de>]
4326 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
4327 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
4328 support key and parameter generation and add initial key generation
4329 functionality for RSA.
4332 *) Add functions for main EVP_PKEY_method operations. The undocumented
4333 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
4334 EVP_PKEY_{encrypt,decrypt}_old.
4337 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
4338 key API, doesn't do much yet.
4341 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
4342 public key algorithms. New option to openssl utility:
4343 "list-public-key-algorithms" to print out info.
4346 *) Implement the Supported Elliptic Curves Extension for
4347 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4350 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
4351 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
4354 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
4355 utilities such as rsa, dsa, dsaparam etc except they process any key
4359 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
4360 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
4361 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
4365 *) Initial support for pluggable public key ASN1.
4366 De-spaghettify the public key ASN1 handling. Move public and private
4367 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
4368 algorithm specific handling to a single module within the relevant
4369 algorithm directory. Add functions to allow (near) opaque processing
4370 of public and private key structures.
4373 *) Implement the Supported Point Formats Extension for
4374 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
4377 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
4378 for the psk identity [hint] and the psk callback functions to the
4379 SSL_SESSION, SSL and SSL_CTX structure.
4382 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
4386 SSL_CTX_use_psk_identity_hint
4387 SSL_get_psk_identity_hint
4388 SSL_get_psk_identity
4389 SSL_use_psk_identity_hint
4391 [Mika Kousa and Pasi Eronen of Nokia Corporation]
4393 *) Add RFC 3161 compliant time stamp request creation, response generation
4394 and response verification functionality.
4395 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
4397 *) Add initial support for TLS extensions, specifically for the server_name
4398 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4399 have new members for a host name. The SSL data structure has an
4400 additional member SSL_CTX *initial_ctx so that new sessions can be
4401 stored in that context to allow for session resumption, even after the
4402 SSL has been switched to a new SSL_CTX in reaction to a client's
4403 server_name extension.
4405 New functions (subject to change):
4407 SSL_get_servername()
4408 SSL_get_servername_type()
4411 New CTRL codes and macros (subject to change):
4413 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4414 - SSL_CTX_set_tlsext_servername_callback()
4415 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4416 - SSL_CTX_set_tlsext_servername_arg()
4417 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4419 openssl s_client has a new '-servername ...' option.
4421 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4422 '-key2 ...', '-servername_fatal' (subject to change). This allows
4423 testing the HostName extension for a specific single host name ('-cert'
4424 and '-key' remain fallbacks for handshakes without HostName
4425 negotiation). If the unrecognized_name alert has to be sent, this by
4426 default is a warning; it becomes fatal with the '-servername_fatal'
4429 [Peter Sylvester, Remy Allais, Christophe Renou]
4431 *) Whirlpool hash implementation is added.
4434 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4435 bn(64,32). Because of instruction set limitations it doesn't have
4436 any negative impact on performance. This was done mostly in order
4437 to make it possible to share assembler modules, such as bn_mul_mont
4438 implementations, between 32- and 64-bit builds without hassle.
4441 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4442 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4446 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4447 dedicated Montgomery multiplication procedure, is introduced.
4448 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4449 "64-bit" performance on certain 32-bit targets.
4452 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4453 in SSL structures. New SSL ctrl to set maximum send fragment size.
4454 Save memory by setting the I/O buffer sizes dynamically instead of
4455 using the maximum available value.
4458 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4459 in addition to the text details.
4462 *) Very, very preliminary EXPERIMENTAL support for printing of general
4463 ASN1 structures. This currently produces rather ugly output and doesn't
4464 handle several customised structures at all.
4467 *) Integrated support for PVK file format and some related formats such
4468 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
4469 these in the 'rsa' and 'dsa' utilities.
4472 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
4475 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
4476 place for the (very old) "NETSCAPE" format certificates which are now
4477 handled using new ASN1 code equivalents.
4480 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
4481 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
4482 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
4485 *) Modify CRL distribution points extension code to print out previously
4486 unsupported fields. Enhance extension setting code to allow setting of
4490 *) Add print and set support for Issuing Distribution Point CRL extension.
4493 *) Change 'Configure' script to enable Camellia by default.
4496 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
4498 *) When rejecting SSL/TLS records due to an incorrect version number, never
4499 update s->server with a new major version number. As of
4500 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
4501 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
4502 the previous behavior could result in a read attempt at NULL when
4503 receiving specific incorrect SSL/TLS records once record payload
4504 protection is active. (CVE-2010-0740)
4505 [Bodo Moeller, Adam Langley <agl@chromium.org>]
4507 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
4508 could be crashed if the relevant tables were not present (e.g. chrooted).
4509 [Tomas Hoger <thoger@redhat.com>]
4511 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
4513 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245)
4514 [Martin Olsson, Neel Mehta]
4516 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
4517 accommodate for stack sorting, always a write lock!).
4520 *) On some versions of WIN32 Heap32Next is very slow. This can cause
4521 excessive delays in the RAND_poll(): over a minute. As a workaround
4522 include a time check in the inner Heap32Next loop too.
4525 *) The code that handled flushing of data in SSL/TLS originally used the
4526 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
4527 the problem outlined in PR#1949. The fix suggested there however can
4528 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
4529 of Apache). So instead simplify the code to flush unconditionally.
4530 This should be fine since flushing with no data to flush is a no op.
4533 *) Handle TLS versions 2.0 and later properly and correctly use the
4534 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
4535 off ancient servers have a habit of sticking around for a while...
4538 *) Modify compression code so it frees up structures without using the
4539 ex_data callbacks. This works around a problem where some applications
4540 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
4541 restarting) then use compression (e.g. SSL with compression) later.
4542 This results in significant per-connection memory leaks and
4543 has caused some security issues including CVE-2008-1678 and
4547 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
4548 change when encrypting or decrypting.
4551 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
4552 connect and renegotiate with servers which do not support RI.
4553 Until RI is more widely deployed this option is enabled by default.
4556 *) Add "missing" ssl ctrls to clear options and mode.
4559 *) If client attempts to renegotiate and doesn't support RI respond with
4560 a no_renegotiation alert as required by RFC5746. Some renegotiating
4561 TLS clients will continue a connection gracefully when they receive
4562 the alert. Unfortunately OpenSSL mishandled this alert and would hang
4563 waiting for a server hello which it will never receive. Now we treat a
4564 received no_renegotiation alert as a fatal error. This is because
4565 applications requesting a renegotiation might well expect it to succeed
4566 and would have no code in place to handle the server denying it so the
4567 only safe thing to do is to terminate the connection.
4570 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
4571 peer supports secure renegotiation and 0 otherwise. Print out peer
4572 renegotiation support in s_client/s_server.
4575 *) Replace the highly broken and deprecated SPKAC certification method with
4576 the updated NID creation version. This should correctly handle UTF8.
4579 *) Implement RFC5746. Re-enable renegotiation but require the extension
4580 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
4581 turns out to be a bad idea. It has been replaced by
4582 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
4583 SSL_CTX_set_options(). This is really not recommended unless you
4584 know what you are doing.
4585 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
4587 *) Fixes to stateless session resumption handling. Use initial_ctx when
4588 issuing and attempting to decrypt tickets in case it has changed during
4589 servername handling. Use a non-zero length session ID when attempting
4590 stateless session resumption: this makes it possible to determine if
4591 a resumption has occurred immediately after receiving server hello
4592 (several places in OpenSSL subtly assume this) instead of later in
4596 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4597 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4598 fixes for a few places where the return code is not checked
4600 [Julia Lawall <julia@diku.dk>]
4602 *) Add --strict-warnings option to Configure script to include devteam
4603 warnings in other configurations.
4606 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4607 makes it possible to install openssl libraries in locations which
4608 have names other than "lib", for example "/usr/lib64" which some
4610 [Steve Henson, based on patch from Jeremy Utley]
4612 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4613 X690 8.9.12 and can produce some misleading textual output of OIDs.
4614 [Steve Henson, reported by Dan Kaminsky]
4616 *) Delete MD2 from algorithm tables. This follows the recommendation in
4617 several standards that it is not used in new applications due to
4618 several cryptographic weaknesses. For binary compatibility reasons
4619 the MD2 API is still compiled in by default.
4622 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
4626 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
4627 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
4629 [Guenter <lists@gknw.net>]
4631 *) Fix the server certificate chain building code to use X509_verify_cert(),
4632 it used to have an ad-hoc builder which was unable to cope with anything
4633 other than a simple chain.
4634 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
4636 *) Don't check self signed certificate signatures in X509_verify_cert()
4637 by default (a flag can override this): it just wastes time without
4638 adding any security. As a useful side effect self signed root CAs
4639 with non-FIPS digests are now usable in FIPS mode.
4642 *) In dtls1_process_out_of_seq_message() the check if the current message
4643 is already buffered was missing. For every new message was memory
4644 allocated, allowing an attacker to perform an denial of service attack
4645 with sending out of seq handshake messages until there is no memory
4646 left. Additionally every future message was buffered, even if the
4647 sequence number made no sense and would be part of another handshake.
4648 So only messages with sequence numbers less than 10 in advance will be
4649 buffered. (CVE-2009-1378)
4650 [Robin Seggelmann, discovered by Daniel Mentz]
4652 *) Records are buffered if they arrive with a future epoch to be
4653 processed after finishing the corresponding handshake. There is
4654 currently no limitation to this buffer allowing an attacker to perform
4655 a DOS attack with sending records with future epochs until there is no
4656 memory left. This patch adds the pqueue_size() function to determine
4657 the size of a buffer and limits the record buffer to 100 entries.
4659 [Robin Seggelmann, discovered by Daniel Mentz]
4661 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
4662 parent structure is freed. (CVE-2009-1379)
4665 *) Handle non-blocking I/O properly in SSL_shutdown() call.
4666 [Darryl Miles <darryl-mailinglists@netbauds.net>]
4669 [Ilya O. <vrghost@gmail.com>]
4671 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
4673 *) Disable renegotiation completely - this fixes a severe security
4674 problem (CVE-2009-3555) at the cost of breaking all
4675 renegotiation. Renegotiation can be re-enabled by setting
4676 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
4677 run-time. This is really not recommended unless you know what
4681 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
4683 *) Don't set val to NULL when freeing up structures, it is freed up by
4684 underlying code. If sizeof(void *) > sizeof(long) this can result in
4685 zeroing past the valid field. (CVE-2009-0789)
4686 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
4688 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
4689 checked correctly. This would allow some invalid signed attributes to
4690 appear to verify correctly. (CVE-2009-0591)
4691 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4693 *) Reject UniversalString and BMPString types with invalid lengths. This
4694 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
4695 a legal length. (CVE-2009-0590)
4698 *) Set S/MIME signing as the default purpose rather than setting it
4699 unconditionally. This allows applications to override it at the store
4703 *) Permit restricted recursion of ASN1 strings. This is needed in practice
4704 to handle some structures.
4707 *) Improve efficiency of mem_gets: don't search whole buffer each time
4709 [Jeremy Shapiro <jnshapir@us.ibm.com>]
4711 *) New -hex option for openssl rand.
4714 *) Print out UTF8String and NumericString when parsing ASN1.
4717 *) Support NumericString type for name components.
4720 *) Allow CC in the environment to override the automatically chosen
4721 compiler. Note that nothing is done to ensure flags work with the
4725 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
4727 *) Properly check EVP_VerifyFinal() and similar return values
4729 [Ben Laurie, Bodo Moeller, Google Security Team]
4731 *) Enable TLS extensions by default.
4734 *) Allow the CHIL engine to be loaded, whether the application is
4735 multithreaded or not. (This does not release the developer from the
4736 obligation to set up the dynamic locking callbacks.)
4737 [Sander Temme <sander@temme.net>]
4739 *) Use correct exit code if there is an error in dgst command.
4740 [Steve Henson; problem pointed out by Roland Dirlewanger]
4742 *) Tweak Configure so that you need to say "experimental-jpake" to enable
4743 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
4746 *) Add experimental JPAKE support, including demo authentication in
4747 s_client and s_server.
4750 *) Set the comparison function in v3_addr_canonize().
4751 [Rob Austein <sra@hactrn.net>]
4753 *) Add support for XMPP STARTTLS in s_client.
4754 [Philip Paeps <philip@freebsd.org>]
4756 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
4757 to ensure that even with this option, only ciphersuites in the
4758 server's preference list will be accepted. (Note that the option
4759 applies only when resuming a session, so the earlier behavior was
4760 just about the algorithm choice for symmetric cryptography.)
4763 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
4765 *) Fix NULL pointer dereference if a DTLS server received
4766 ChangeCipherSpec as first record (CVE-2009-1386).
4769 *) Fix a state transition in s3_srvr.c and d1_srvr.c
4770 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
4773 *) The fix in 0.9.8c that supposedly got rid of unsafe
4774 double-checked locking was incomplete for RSA blinding,
4775 addressing just one layer of what turns out to have been
4776 doubly unsafe triple-checked locking.
4778 So now fix this for real by retiring the MONT_HELPER macro
4779 in crypto/rsa/rsa_eay.c.
4781 [Bodo Moeller; problem pointed out by Marius Schilder]
4783 *) Various precautionary measures:
4785 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
4787 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
4788 (NB: This would require knowledge of the secret session ticket key
4789 to exploit, in which case you'd be SOL either way.)
4791 - Change bn_nist.c so that it will properly handle input BIGNUMs
4792 outside the expected range.
4794 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
4797 [Neel Mehta, Bodo Moeller]
4799 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
4800 the load fails. Useful for distros.
4801 [Ben Laurie and the FreeBSD team]
4803 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
4806 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
4809 *) Expand ENGINE to support engine supplied SSL client certificate functions.
4811 This work was sponsored by Logica.
4814 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
4815 keystores. Support for SSL/TLS client authentication too.
4816 Not compiled unless enable-capieng specified to Configure.
4818 This work was sponsored by Logica.
4821 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
4822 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
4823 attribute creation routines such as certificate requests and PKCS#12
4827 Changes between 0.9.8g and 0.9.8h [28 May 2008]
4829 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
4830 handshake which could lead to a client crash as found using the
4831 Codenomicon TLS test suite (CVE-2008-1672)
4832 [Steve Henson, Mark Cox]
4834 *) Fix double free in TLS server name extensions which could lead to
4835 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
4838 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
4840 Clear the error queue to ensure that error entries left from
4841 older function calls do not interfere with the correct operation.
4842 [Lutz Jaenicke, Erik de Castro Lopo]
4844 *) Remove root CA certificates of commercial CAs:
4846 The OpenSSL project does not recommend any specific CA and does not
4847 have any policy with respect to including or excluding any CA.
4848 Therefore it does not make any sense to ship an arbitrary selection
4849 of root CA certificates with the OpenSSL software.
4852 *) RSA OAEP patches to fix two separate invalid memory reads.
4853 The first one involves inputs when 'lzero' is greater than
4854 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
4855 before the beginning of from). The second one involves inputs where
4856 the 'db' section contains nothing but zeroes (there is a one-byte
4857 invalid read after the end of 'db').
4858 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4860 *) Partial backport from 0.9.9-dev:
4862 Introduce bn_mul_mont (dedicated Montgomery multiplication
4863 procedure) as a candidate for BIGNUM assembler implementation.
4864 While 0.9.9-dev uses assembler for various architectures, only
4865 x86_64 is available by default here in the 0.9.8 branch, and
4866 32-bit x86 is available through a compile-time setting.
4868 To try the 32-bit x86 assembler implementation, use Configure
4869 option "enable-montasm" (which exists only for this backport).
4871 As "enable-montasm" for 32-bit x86 disclaims code stability
4872 anyway, in this constellation we activate additional code
4873 backported from 0.9.9-dev for further performance improvements,
4874 namely BN_from_montgomery_word. (To enable this otherwise,
4875 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
4877 [Andy Polyakov (backport partially by Bodo Moeller)]
4879 *) Add TLS session ticket callback. This allows an application to set
4880 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
4881 values. This is useful for key rollover for example where several key
4882 sets may exist with different names.
4885 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
4886 This was broken until now in 0.9.8 releases, such that the only way
4887 a registered ENGINE could be used (assuming it initialises
4888 successfully on the host) was to explicitly set it as the default
4889 for the relevant algorithms. This is in contradiction with 0.9.7
4890 behaviour and the documentation. With this fix, when an ENGINE is
4891 registered into a given algorithm's table of implementations, the
4892 'uptodate' flag is reset so that auto-discovery will be used next
4893 time a new context for that algorithm attempts to select an
4895 [Ian Lister (tweaked by Geoff Thorpe)]
4897 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
4898 implementation in the following ways:
4900 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
4903 Lack of BER streaming support means one pass streaming processing is
4904 only supported if data is detached: setting the streaming flag is
4905 ignored for embedded content.
4907 CMS support is disabled by default and must be explicitly enabled
4908 with the enable-cms configuration option.
4911 *) Update the GMP engine glue to do direct copies between BIGNUM and
4912 mpz_t when openssl and GMP use the same limb size. Otherwise the
4913 existing "conversion via a text string export" trick is still used.
4914 [Paul Sheer <paulsheer@gmail.com>]
4916 *) Zlib compression BIO. This is a filter BIO which compressed and
4917 uncompresses any data passed through it.
4920 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
4921 RFC3394 compatible AES key wrapping.
4924 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
4925 sets string data without copying. X509_ALGOR_set0() and
4926 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
4927 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
4928 from an X509_ATTRIBUTE structure optionally checking it occurs only
4929 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
4933 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
4934 to get the expected BN_FLG_CONSTTIME behavior.
4935 [Bodo Moeller (Google)]
4939 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
4940 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
4941 - added some more tests to do_tests.pl
4942 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
4943 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
4944 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
4945 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
4946 - various changes to netware.pl to enable gcc-cross builds on Win32
4948 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
4949 - various changes to fix missing prototype warnings
4950 - fixed x86nasm.pl to create correct asm files for NASM COFF output
4951 - added AES, WHIRLPOOL and CPUID assembler code to build files
4952 - added missing AES assembler make rules to mk1mf.pl
4953 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
4954 [Guenter Knauf <eflash@gmx.net>]
4956 *) Implement certificate status request TLS extension defined in RFC3546.
4957 A client can set the appropriate parameters and receive the encoded
4958 OCSP response via a callback. A server can query the supplied parameters
4959 and set the encoded OCSP response in the callback. Add simplified examples
4960 to s_client and s_server.
4963 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
4965 *) Fix various bugs:
4966 + Binary incompatibility of ssl_ctx_st structure
4967 + DTLS interoperation with non-compliant servers
4968 + Don't call get_session_cb() without proposed session
4969 + Fix ia64 assembler code
4970 [Andy Polyakov, Steve Henson]
4972 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
4974 *) DTLS Handshake overhaul. There were longstanding issues with
4975 OpenSSL DTLS implementation, which were making it impossible for
4976 RFC 4347 compliant client to communicate with OpenSSL server.
4977 Unfortunately just fixing these incompatibilities would "cut off"
4978 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
4979 server keeps tolerating non RFC compliant syntax. The opposite is
4980 not true, 0.9.8f client can not communicate with earlier server.
4981 This update even addresses CVE-2007-4995.
4984 *) Changes to avoid need for function casts in OpenSSL: some compilers
4985 (gcc 4.2 and later) reject their use.
4986 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
4989 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4990 RFC4507bis. The encrypted ticket format is an encrypted encoded
4991 SSL_SESSION structure, that way new session features are automatically
4994 If a client application caches session in an SSL_SESSION structure
4995 support is transparent because tickets are now stored in the encoded
4998 The SSL_CTX structure automatically generates keys for ticket
4999 protection in servers so again support should be possible
5000 with no application modification.
5002 If a client or server wishes to disable RFC4507 support then the option
5003 SSL_OP_NO_TICKET can be set.
5005 Add a TLS extension debugging callback to allow the contents of any client
5006 or server extensions to be examined.
5008 This work was sponsored by Google.
5011 *) Add initial support for TLS extensions, specifically for the server_name
5012 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
5013 have new members for a host name. The SSL data structure has an
5014 additional member SSL_CTX *initial_ctx so that new sessions can be
5015 stored in that context to allow for session resumption, even after the
5016 SSL has been switched to a new SSL_CTX in reaction to a client's
5017 server_name extension.
5019 New functions (subject to change):
5021 SSL_get_servername()
5022 SSL_get_servername_type()
5025 New CTRL codes and macros (subject to change):
5027 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
5028 - SSL_CTX_set_tlsext_servername_callback()
5029 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
5030 - SSL_CTX_set_tlsext_servername_arg()
5031 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
5033 openssl s_client has a new '-servername ...' option.
5035 openssl s_server has new options '-servername_host ...', '-cert2 ...',
5036 '-key2 ...', '-servername_fatal' (subject to change). This allows
5037 testing the HostName extension for a specific single host name ('-cert'
5038 and '-key' remain fallbacks for handshakes without HostName
5039 negotiation). If the unrecognized_name alert has to be sent, this by
5040 default is a warning; it becomes fatal with the '-servername_fatal'
5043 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
5045 *) Add AES and SSE2 assembly language support to VC++ build.
5048 *) Mitigate attack on final subtraction in Montgomery reduction.
5051 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
5052 (which previously caused an internal error).
5055 *) Squeeze another 10% out of IGE mode when in != out.
5058 *) AES IGE mode speedup.
5059 [Dean Gaudet (Google)]
5061 *) Add the Korean symmetric 128-bit cipher SEED (see
5062 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
5063 add SEED ciphersuites from RFC 4162:
5065 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
5066 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
5067 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
5068 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
5070 To minimize changes between patchlevels in the OpenSSL 0.9.8
5071 series, SEED remains excluded from compilation unless OpenSSL
5072 is configured with 'enable-seed'.
5073 [KISA, Bodo Moeller]
5075 *) Mitigate branch prediction attacks, which can be practical if a
5076 single processor is shared, allowing a spy process to extract
5077 information. For detailed background information, see
5078 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
5079 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
5080 and Necessary Software Countermeasures"). The core of the change
5081 are new versions BN_div_no_branch() and
5082 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
5083 respectively, which are slower, but avoid the security-relevant
5084 conditional branches. These are automatically called by BN_div()
5085 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
5086 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
5087 remove a conditional branch.
5089 BN_FLG_CONSTTIME is the new name for the previous
5090 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
5091 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
5092 in the exponent causes BN_mod_exp_mont() to use the alternative
5093 implementation in BN_mod_exp_mont_consttime().) The old name
5094 remains as a deprecated alias.
5096 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
5097 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
5098 constant-time implementations for more than just exponentiation.
5099 Here too the old name is kept as a deprecated alias.
5101 BN_BLINDING_new() will now use BN_dup() for the modulus so that
5102 the BN_BLINDING structure gets an independent copy of the
5103 modulus. This means that the previous "BIGNUM *m" argument to
5104 BN_BLINDING_new() and to BN_BLINDING_create_param() now
5105 essentially becomes "const BIGNUM *m", although we can't actually
5106 change this in the header file before 0.9.9. It allows
5107 RSA_setup_blinding() to use BN_with_flags() on the modulus to
5108 enable BN_FLG_CONSTTIME.
5110 [Matthew D Wood (Intel Corp)]
5112 *) In the SSL/TLS server implementation, be strict about session ID
5113 context matching (which matters if an application uses a single
5114 external cache for different purposes). Previously,
5115 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
5116 set. This did ensure strict client verification, but meant that,
5117 with applications using a single external cache for quite
5118 different requirements, clients could circumvent ciphersuite
5119 restrictions for a given session ID context by starting a session
5120 in a different context.
5123 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5124 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5125 authentication-only ciphersuites.
5128 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
5129 not complete and could lead to a possible single byte overflow
5130 (CVE-2007-5135) [Ben Laurie]
5132 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
5134 *) Since AES128 and AES256 (and similarly Camellia128 and
5135 Camellia256) share a single mask bit in the logic of
5136 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5137 kludge to work properly if AES128 is available and AES256 isn't
5138 (or if Camellia128 is available and Camellia256 isn't).
5141 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
5142 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
5143 When a point or a seed is encoded in a BIT STRING, we need to
5144 prevent the removal of trailing zero bits to get the proper DER
5145 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
5146 of a NamedBitList, for which trailing 0 bits need to be removed.)
5149 *) Have SSL/TLS server implementation tolerate "mismatched" record
5150 protocol version while receiving ClientHello even if the
5151 ClientHello is fragmented. (The server can't insist on the
5152 particular protocol version it has chosen before the ServerHello
5153 message has informed the client about his choice.)
5156 *) Add RFC 3779 support.
5157 [Rob Austein for ARIN, Ben Laurie]
5159 *) Load error codes if they are not already present instead of using a
5160 static variable. This allows them to be cleanly unloaded and reloaded.
5161 Improve header file function name parsing.
5164 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
5165 or CAPABILITY handshake as required by RFCs.
5168 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
5170 *) Introduce limits to prevent malicious keys being able to
5171 cause a denial of service. (CVE-2006-2940)
5172 [Steve Henson, Bodo Moeller]
5174 *) Fix ASN.1 parsing of certain invalid structures that can result
5175 in a denial of service. (CVE-2006-2937) [Steve Henson]
5177 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5178 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5180 *) Fix SSL client code which could crash if connecting to a
5181 malicious SSLv2 server. (CVE-2006-4343)
5182 [Tavis Ormandy and Will Drewry, Google Security Team]
5184 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
5185 match only those. Before that, "AES256-SHA" would be interpreted
5186 as a pattern and match "AES128-SHA" too (since AES128-SHA got
5187 the same strength classification in 0.9.7h) as we currently only
5188 have a single AES bit in the ciphersuite description bitmap.
5189 That change, however, also applied to ciphersuite strings such as
5190 "RC4-MD5" that intentionally matched multiple ciphersuites --
5191 namely, SSL 2.0 ciphersuites in addition to the more common ones
5192 from SSL 3.0/TLS 1.0.
5194 So we change the selection algorithm again: Naming an explicit
5195 ciphersuite selects this one ciphersuite, and any other similar
5196 ciphersuite (same bitmap) from *other* protocol versions.
5197 Thus, "RC4-MD5" again will properly select both the SSL 2.0
5198 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
5200 Since SSL 2.0 does not have any ciphersuites for which the
5201 128/256 bit distinction would be relevant, this works for now.
5202 The proper fix will be to use different bits for AES128 and
5203 AES256, which would have avoided the problems from the beginning;
5204 however, bits are scarce, so we can only do this in a new release
5205 (not just a patchlevel) when we can change the SSL_CIPHER
5206 definition to split the single 'unsigned long mask' bitmap into
5207 multiple values to extend the available space.
5211 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
5213 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5214 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5216 *) Add AES IGE and biIGE modes.
5219 *) Change the Unix randomness entropy gathering to use poll() when
5220 possible instead of select(), since the latter has some
5221 undesirable limitations.
5222 [Darryl Miles via Richard Levitte and Bodo Moeller]
5224 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
5225 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
5226 cannot be implicitly activated as part of, e.g., the "AES" alias.
5227 However, please upgrade to OpenSSL 0.9.9[-dev] for
5228 non-experimental use of the ECC ciphersuites to get TLS extension
5229 support, which is required for curve and point format negotiation
5230 to avoid potential handshake problems.
5233 *) Disable rogue ciphersuites:
5235 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5236 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5237 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5239 The latter two were purportedly from
5240 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5243 Also deactivate the remaining ciphersuites from
5244 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5245 unofficial, and the ID has long expired.
5248 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5249 dual-core machines) and other potential thread-safety issues.
5252 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
5253 versions), which is now available for royalty-free use
5254 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
5255 Also, add Camellia TLS ciphersuites from RFC 4132.
5257 To minimize changes between patchlevels in the OpenSSL 0.9.8
5258 series, Camellia remains excluded from compilation unless OpenSSL
5259 is configured with 'enable-camellia'.
5262 *) Disable the padding bug check when compression is in use. The padding
5263 bug check assumes the first packet is of even length, this is not
5264 necessarily true if compression is enabled and can result in false
5265 positives causing handshake failure. The actual bug test is ancient
5266 code so it is hoped that implementations will either have fixed it by
5267 now or any which still have the bug do not support compression.
5270 Changes between 0.9.8a and 0.9.8b [04 May 2006]
5272 *) When applying a cipher rule check to see if string match is an explicit
5273 cipher suite and only match that one cipher suite if it is.
5276 *) Link in manifests for VC++ if needed.
5277 [Austin Ziegler <halostatue@gmail.com>]
5279 *) Update support for ECC-based TLS ciphersuites according to
5280 draft-ietf-tls-ecc-12.txt with proposed changes (but without
5281 TLS extensions, which are supported starting with the 0.9.9
5282 branch, not in the OpenSSL 0.9.8 branch).
5285 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
5286 opaque EVP_CIPHER_CTX handling.
5289 *) Fixes and enhancements to zlib compression code. We now only use
5290 "zlib1.dll" and use the default __cdecl calling convention on Win32
5291 to conform with the standards mentioned here:
5292 http://www.zlib.net/DLL_FAQ.txt
5293 Static zlib linking now works on Windows and the new --with-zlib-include
5294 --with-zlib-lib options to Configure can be used to supply the location
5295 of the headers and library. Gracefully handle case where zlib library
5299 *) Several fixes and enhancements to the OID generation code. The old code
5300 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
5301 handle numbers larger than ULONG_MAX, truncated printing and had a
5302 non standard OBJ_obj2txt() behaviour.
5305 *) Add support for building of engines under engine/ as shared libraries
5306 under VC++ build system.
5309 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
5310 Hopefully, we will not see any false combination of paths any more.
5313 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
5315 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5316 (part of SSL_OP_ALL). This option used to disable the
5317 countermeasure against man-in-the-middle protocol-version
5318 rollback in the SSL 2.0 server implementation, which is a bad
5319 idea. (CVE-2005-2969)
5321 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5322 for Information Security, National Institute of Advanced Industrial
5323 Science and Technology [AIST], Japan)]
5325 *) Add two function to clear and return the verify parameter flags.
5328 *) Keep cipherlists sorted in the source instead of sorting them at
5329 runtime, thus removing the need for a lock.
5332 *) Avoid some small subgroup attacks in Diffie-Hellman.
5333 [Nick Mathewson and Ben Laurie]
5335 *) Add functions for well-known primes.
5338 *) Extended Windows CE support.
5339 [Satoshi Nakamura and Andy Polyakov]
5341 *) Initialize SSL_METHOD structures at compile time instead of during
5342 runtime, thus removing the need for a lock.
5345 *) Make PKCS7_decrypt() work even if no certificate is supplied by
5346 attempting to decrypt each encrypted key in turn. Add support to
5350 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
5352 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
5355 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
5358 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
5359 key into the same file any more.
5362 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
5365 *) Add -utf8 command line and config file option to 'ca'.
5366 [Stefan <stf@udoma.org]
5368 *) Removed the macro des_crypt(), as it seems to conflict with some
5369 libraries. Use DES_crypt().
5372 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
5373 involves renaming the source and generated shared-libs for
5374 both. The engines will accept the corrected or legacy ids
5375 ('ncipher' and '4758_cca' respectively) when binding. NB,
5376 this only applies when building 'shared'.
5377 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
5379 *) Add attribute functions to EVP_PKEY structure. Modify
5380 PKCS12_create() to recognize a CSP name attribute and
5381 use it. Make -CSP option work again in pkcs12 utility.
5384 *) Add new functionality to the bn blinding code:
5385 - automatic re-creation of the BN_BLINDING parameters after
5386 a fixed number of uses (currently 32)
5387 - add new function for parameter creation
5388 - introduce flags to control the update behaviour of the
5389 BN_BLINDING parameters
5390 - hide BN_BLINDING structure
5391 Add a second BN_BLINDING slot to the RSA structure to improve
5392 performance when a single RSA object is shared among several
5396 *) Add support for DTLS.
5397 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
5399 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
5400 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
5403 *) Remove buggy and incomplete DH cert support from
5404 ssl/ssl_rsa.c and ssl/s3_both.c
5407 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5408 the apps/openssl applications.
5411 *) Compile clean with "-Wall -Wmissing-prototypes
5412 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5413 DEBUG_SAFESTACK must also be set.
5416 *) Change ./Configure so that certain algorithms can be disabled by default.
5417 The new counterpiece to "no-xxx" is "enable-xxx".
5419 The patented RC5 and MDC2 algorithms will now be disabled unless
5420 "enable-rc5" and "enable-mdc2", respectively, are specified.
5422 (IDEA remains enabled despite being patented. This is because IDEA
5423 is frequently required for interoperability, and there is no license
5424 fee for non-commercial use. As before, "no-idea" can be used to
5425 avoid this algorithm.)
5429 *) Add processing of proxy certificates (see RFC 3820). This work was
5430 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5431 EGEE (Enabling Grids for E-science in Europe).
5434 *) RC4 performance overhaul on modern architectures/implementations, such
5435 as Intel P4, IA-64 and AMD64.
5438 *) New utility extract-section.pl. This can be used specify an alternative
5439 section number in a pod file instead of having to treat each file as
5440 a separate case in Makefile. This can be done by adding two lines to the
5443 =for comment openssl_section:XXX
5445 The blank line is mandatory.
5449 *) New arguments -certform, -keyform and -pass for s_client and s_server
5450 to allow alternative format key and certificate files and passphrase
5454 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5455 update associated structures and add various utility functions.
5457 Add new policy related verify parameters, include policy checking in
5458 standard verify code. Enhance 'smime' application with extra parameters
5459 to support policy checking and print out.
5462 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5463 Nehemiah processors. These extensions support AES encryption in hardware
5464 as well as RNG (though RNG support is currently disabled).
5465 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
5467 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
5470 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
5471 [Andy Polyakov and a number of other people]
5473 *) Improved PowerPC platform support. Most notably BIGNUM assembler
5474 implementation contributed by IBM.
5475 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
5477 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
5478 exponent rather than 'unsigned long'. There is a corresponding change to
5479 the new 'rsa_keygen' element of the RSA_METHOD structure.
5480 [Jelte Jansen, Geoff Thorpe]
5482 *) Functionality for creating the initial serial number file is now
5483 moved from CA.pl to the 'ca' utility with a new option -create_serial.
5485 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
5486 number file to 1, which is bound to cause problems. To avoid
5487 the problems while respecting compatibility between different 0.9.7
5488 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
5489 CA.pl for serial number initialization. With the new release 0.9.8,
5490 we can fix the problem directly in the 'ca' utility.)
5493 *) Reduced header interdependencies by declaring more opaque objects in
5494 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
5495 give fewer recursive includes, which could break lazy source code - so
5496 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
5497 developers should define this symbol when building and using openssl to
5498 ensure they track the recommended behaviour, interfaces, [etc], but
5499 backwards-compatible behaviour prevails when this isn't defined.
5502 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
5505 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
5506 This will generate a random key of the appropriate length based on the
5507 cipher context. The EVP_CIPHER can provide its own random key generation
5508 routine to support keys of a specific form. This is used in the des and
5509 3des routines to generate a key of the correct parity. Update S/MIME
5510 code to use new functions and hence generate correct parity DES keys.
5511 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
5512 valid (weak or incorrect parity).
5515 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
5516 as looking them up. This is useful when the verified structure may contain
5517 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
5518 present unless the new PKCS7_NO_CRL flag is asserted.
5521 *) Extend ASN1 oid configuration module. It now additionally accepts the
5524 shortName = some long name, 1.2.3.4
5527 *) Reimplemented the BN_CTX implementation. There is now no more static
5528 limitation on the number of variables it can handle nor the depth of the
5529 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
5530 information can now expand as required, and rather than having a single
5531 static array of bignums, BN_CTX now uses a linked-list of such arrays
5532 allowing it to expand on demand whilst maintaining the usefulness of
5533 BN_CTX's "bundling".
5536 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
5537 to allow all RSA operations to function using a single BN_CTX.
5540 *) Preliminary support for certificate policy evaluation and checking. This
5541 is initially intended to pass the tests outlined in "Conformance Testing
5542 of Relying Party Client Certificate Path Processing Logic" v1.07.
5545 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
5546 remained unused and not that useful. A variety of other little bignum
5547 tweaks and fixes have also been made continuing on from the audit (see
5551 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
5552 associated ASN1, EVP and SSL functions and old ASN1 macros.
5555 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
5556 and this should never fail. So the return value from the use of
5557 BN_set_word() (which can fail due to needless expansion) is now deprecated;
5558 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
5561 *) BN_CTX_get() should return zero-valued bignums, providing the same
5562 initialised value as BN_new().
5563 [Geoff Thorpe, suggested by Ulf Möller]
5565 *) Support for inhibitAnyPolicy certificate extension.
5568 *) An audit of the BIGNUM code is underway, for which debugging code is
5569 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
5570 is considered valid when processing BIGNUMs, and causes execution to
5571 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
5572 further steps are taken to deliberately pollute unused data in BIGNUM
5573 structures to try and expose faulty code further on. For now, openssl will
5574 (in its default mode of operation) continue to tolerate the inconsistent
5575 forms that it has tolerated in the past, but authors and packagers should
5576 consider trying openssl and their own applications when compiled with
5577 these debugging symbols defined. It will help highlight potential bugs in
5578 their own code, and will improve the test coverage for OpenSSL itself. At
5579 some point, these tighter rules will become openssl's default to improve
5580 maintainability, though the assert()s and other overheads will remain only
5581 in debugging configurations. See bn.h for more details.
5582 [Geoff Thorpe, Nils Larsch, Ulf Möller]
5584 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
5585 that can only be obtained through BN_CTX_new() (which implicitly
5586 initialises it). The presence of this function only made it possible
5587 to overwrite an existing structure (and cause memory leaks).
5590 *) Because of the callback-based approach for implementing LHASH as a
5591 template type, lh_insert() adds opaque objects to hash-tables and
5592 lh_doall() or lh_doall_arg() are typically used with a destructor callback
5593 to clean up those corresponding objects before destroying the hash table
5594 (and losing the object pointers). So some over-zealous constifications in
5595 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5596 objects as "const" and the lh_doall[_arg] callback wrappers are not
5597 prototyped to have "const" restrictions on the object pointers they are
5598 given (and so aren't required to cast them away any more).
5601 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5602 (speed) prefers to use its own implementation. The two implementations
5603 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5604 its object type properly exposed (MS_TM) instead of casting to/from "char
5605 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5606 aren't necessarily the greatest nomenclatures - but this is what was used
5607 internally to the implementation so I've used that for now.
5610 *) Ensure that deprecated functions do not get compiled when
5611 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5612 the self-tests were still using deprecated key-generation functions so
5613 these have been updated also.
5616 *) Reorganise PKCS#7 code to separate the digest location functionality
5617 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5618 New function PKCS7_set_digest() to set the digest type for PKCS#7
5619 digestedData type. Add additional code to correctly generate the
5620 digestedData type and add support for this type in PKCS7 initialization
5624 *) New function PKCS7_set0_type_other() this initializes a PKCS7
5625 structure of type "other".
5628 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
5629 sure the loop does correctly stop and breaking ("division by zero")
5630 modulus operations are not performed. The (pre-generated) prime
5631 table crypto/bn/bn_prime.h was already correct, but it could not be
5632 re-generated on some platforms because of the "division by zero"
5633 situation in the script.
5634 [Ralf S. Engelschall]
5636 *) Update support for ECC-based TLS ciphersuites according to
5637 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
5638 SHA-1 now is only used for "small" curves (where the
5639 representation of a field element takes up to 24 bytes); for
5640 larger curves, the field element resulting from ECDH is directly
5641 used as premaster secret.
5642 [Douglas Stebila (Sun Microsystems Laboratories)]
5644 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
5645 curve secp160r1 to the tests.
5646 [Douglas Stebila (Sun Microsystems Laboratories)]
5648 *) Add the possibility to load symbols globally with DSO.
5649 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
5651 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
5652 control of the error stack.
5655 *) Add support for STORE in ENGINE.
5658 *) Add the STORE type. The intention is to provide a common interface
5659 to certificate and key stores, be they simple file-based stores, or
5660 HSM-type store, or LDAP stores, or...
5661 NOTE: The code is currently UNTESTED and isn't really used anywhere.
5664 *) Add a generic structure called OPENSSL_ITEM. This can be used to
5665 pass a list of arguments to any function as well as provide a way
5666 for a function to pass data back to the caller.
5669 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
5670 works like BUF_strdup() but can be used to duplicate a portion of
5671 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
5675 *) Add the function sk_find_ex() which works like sk_find(), but will
5676 return an index to an element even if an exact match couldn't be
5677 found. The index is guaranteed to point at the element where the
5678 searched-for key would be inserted to preserve sorting order.
5681 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
5682 takes an extra flags argument for optional functionality. Currently,
5683 the following flags are defined:
5685 OBJ_BSEARCH_VALUE_ON_NOMATCH
5686 This one gets OBJ_bsearch_ex() to return a pointer to the first
5687 element where the comparing function returns a negative or zero
5690 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
5691 This one gets OBJ_bsearch_ex() to return a pointer to the first
5692 element where the comparing function returns zero. This is useful
5693 if there are more than one element where the comparing function
5697 *) Make it possible to create self-signed certificates with 'openssl ca'
5698 in such a way that the self-signed certificate becomes part of the
5699 CA database and uses the same mechanisms for serial number generation
5700 as all other certificate signing. The new flag '-selfsign' enables
5701 this functionality. Adapt CA.sh and CA.pl.in.
5704 *) Add functionality to check the public key of a certificate request
5705 against a given private. This is useful to check that a certificate
5706 request can be signed by that key (self-signing).
5709 *) Make it possible to have multiple active certificates with the same
5710 subject in the CA index file. This is done only if the keyword
5711 'unique_subject' is set to 'no' in the main CA section (default
5712 if 'CA_default') of the configuration file. The value is saved
5713 with the database itself in a separate index attribute file,
5714 named like the index file with '.attr' appended to the name.
5717 *) Generate multi-valued AVAs using '+' notation in config files for
5721 *) Support for nameConstraints certificate extension.
5724 *) Support for policyConstraints certificate extension.
5727 *) Support for policyMappings certificate extension.
5730 *) Make sure the default DSA_METHOD implementation only uses its
5731 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
5732 and change its own handlers to be NULL so as to remove unnecessary
5733 indirection. This lets alternative implementations fallback to the
5734 default implementation more easily.
5737 *) Support for directoryName in GeneralName related extensions
5741 *) Make it possible to link applications using Makefile.shared.
5742 Make that possible even when linking against static libraries!
5745 *) Support for single pass processing for S/MIME signing. This now
5746 means that S/MIME signing can be done from a pipe, in addition
5747 cleartext signing (multipart/signed type) is effectively streaming
5748 and the signed data does not need to be all held in memory.
5750 This is done with a new flag PKCS7_STREAM. When this flag is set
5751 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
5752 is done after the data is output (and digests calculated) in
5753 SMIME_write_PKCS7().
5756 *) Add full support for -rpath/-R, both in shared libraries and
5757 applications, at least on the platforms where it's known how
5761 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
5762 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
5763 will now compute a table of multiples of the generator that
5764 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
5765 faster (notably in the case of a single point multiplication,
5766 scalar * generator).
5767 [Nils Larsch, Bodo Moeller]
5769 *) IPv6 support for certificate extensions. The various extensions
5770 which use the IP:a.b.c.d can now take IPv6 addresses using the
5771 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
5775 *) Added an ENGINE that implements RSA by performing private key
5776 exponentiations with the GMP library. The conversions to and from
5777 GMP's mpz_t format aren't optimised nor are any montgomery forms
5778 cached, and on x86 it appears OpenSSL's own performance has caught up.
5779 However there are likely to be other architectures where GMP could
5780 provide a boost. This ENGINE is not built in by default, but it can be
5781 specified at Configure time and should be accompanied by the necessary
5782 linker additions, eg;
5783 ./config -DOPENSSL_USE_GMP -lgmp
5786 *) "openssl engine" will not display ENGINE/DSO load failure errors when
5787 testing availability of engines with "-t" - the old behaviour is
5788 produced by increasing the feature's verbosity with "-tt".
5791 *) ECDSA routines: under certain error conditions uninitialized BN objects
5792 could be freed. Solution: make sure initialization is performed early
5793 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
5797 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
5798 and DH_METHOD (eg. by ENGINE implementations) to override the normal
5799 software implementations. For DSA and DH, parameter generation can
5800 also be overridden by providing the appropriate method callbacks.
5803 *) Change the "progress" mechanism used in key-generation and
5804 primality testing to functions that take a new BN_GENCB pointer in
5805 place of callback/argument pairs. The new API functions have "_ex"
5806 postfixes and the older functions are reimplemented as wrappers for
5807 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
5808 declarations of the old functions to help (graceful) attempts to
5809 migrate to the new functions. Also, the new key-generation API
5810 functions operate on a caller-supplied key-structure and return
5811 success/failure rather than returning a key or NULL - this is to
5812 help make "keygen" another member function of RSA_METHOD etc.
5814 Example for using the new callback interface:
5816 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
5820 BN_GENCB_set(&my_cb, my_callback, my_arg);
5822 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
5823 /* For the meaning of a, b in calls to my_callback(), see the
5824 * documentation of the function that calls the callback.
5825 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
5826 * my_callback should return 1 if it wants BN_is_prime_ex()
5827 * to continue, or 0 to stop.
5832 *) Change the ZLIB compression method to be stateful, and make it
5833 available to TLS with the number defined in
5834 draft-ietf-tls-compression-04.txt.
5837 *) Add the ASN.1 structures and functions for CertificatePair, which
5838 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
5840 CertificatePair ::= SEQUENCE {
5841 forward [0] Certificate OPTIONAL,
5842 reverse [1] Certificate OPTIONAL,
5843 -- at least one of the pair shall be present -- }
5845 Also implement the PEM functions to read and write certificate
5846 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
5848 This needed to be defined, mostly for the sake of the LDAP
5849 attribute crossCertificatePair, but may prove useful elsewhere as
5853 *) Make it possible to inhibit symlinking of shared libraries in
5854 Makefile.shared, for Cygwin's sake.
5857 *) Extend the BIGNUM API by creating a function
5858 void BN_set_negative(BIGNUM *a, int neg);
5859 and a macro that behave like
5860 int BN_is_negative(const BIGNUM *a);
5862 to avoid the need to access 'a->neg' directly in applications.
5865 *) Implement fast modular reduction for pseudo-Mersenne primes
5866 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
5867 EC_GROUP_new_curve_GFp() will now automatically use this
5869 [Nils Larsch <nla@trustcenter.de>]
5871 *) Add new lock type (CRYPTO_LOCK_BN).
5874 *) Change the ENGINE framework to automatically load engines
5875 dynamically from specific directories unless they could be
5876 found to already be built in or loaded. Move all the
5877 current engines except for the cryptodev one to a new
5879 The engines in engines/ are built as shared libraries if
5880 the "shared" options was given to ./Configure or ./config.
5881 Otherwise, they are inserted in libcrypto.a.
5882 /usr/local/ssl/engines is the default directory for dynamic
5883 engines, but that can be overridden at configure time through
5884 the usual use of --prefix and/or --openssldir, and at run
5885 time with the environment variable OPENSSL_ENGINES.
5886 [Geoff Thorpe and Richard Levitte]
5888 *) Add Makefile.shared, a helper makefile to build shared
5889 libraries. Adapt Makefile.org.
5892 *) Add version info to Win32 DLLs.
5893 [Peter 'Luna' Runestig" <peter@runestig.com>]
5895 *) Add new 'medium level' PKCS#12 API. Certificates and keys
5896 can be added using this API to created arbitrary PKCS#12
5897 files while avoiding the low level API.
5899 New options to PKCS12_create(), key or cert can be NULL and
5900 will then be omitted from the output file. The encryption
5901 algorithm NIDs can be set to -1 for no encryption, the mac
5902 iteration count can be set to 0 to omit the mac.
5904 Enhance pkcs12 utility by making the -nokeys and -nocerts
5905 options work when creating a PKCS#12 file. New option -nomac
5906 to omit the mac, NONE can be set for an encryption algorithm.
5907 New code is modified to use the enhanced PKCS12_create()
5908 instead of the low level API.
5911 *) Extend ASN1 encoder to support indefinite length constructed
5912 encoding. This can output sequences tags and octet strings in
5913 this form. Modify pk7_asn1.c to support indefinite length
5914 encoding. This is experimental and needs additional code to
5915 be useful, such as an ASN1 bio and some enhanced streaming
5918 Extend template encode functionality so that tagging is passed
5919 down to the template encoder.
5922 *) Let 'openssl req' fail if an argument to '-newkey' is not
5923 recognized instead of using RSA as a default.
5926 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
5927 As these are not official, they are not included in "ALL";
5928 the "ECCdraft" ciphersuite group alias can be used to select them.
5929 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
5931 *) Add ECDH engine support.
5932 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
5934 *) Add ECDH in new directory crypto/ecdh/.
5935 [Douglas Stebila (Sun Microsystems Laboratories)]
5937 *) Let BN_rand_range() abort with an error after 100 iterations
5938 without success (which indicates a broken PRNG).
5941 *) Change BN_mod_sqrt() so that it verifies that the input value
5942 is really the square of the return value. (Previously,
5943 BN_mod_sqrt would show GIGO behaviour.)
5946 *) Add named elliptic curves over binary fields from X9.62, SECG,
5947 and WAP/WTLS; add OIDs that were still missing.
5949 [Sheueling Chang Shantz and Douglas Stebila
5950 (Sun Microsystems Laboratories)]
5952 *) Extend the EC library for elliptic curves over binary fields
5953 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
5956 EC_GF2m_simple_method
5960 EC_GROUP_new_curve_GF2m
5961 EC_GROUP_set_curve_GF2m
5962 EC_GROUP_get_curve_GF2m
5963 EC_POINT_set_affine_coordinates_GF2m
5964 EC_POINT_get_affine_coordinates_GF2m
5965 EC_POINT_set_compressed_coordinates_GF2m
5967 Point compression for binary fields is disabled by default for
5968 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
5971 As binary polynomials are represented as BIGNUMs, various members
5972 of the EC_GROUP and EC_POINT data structures can be shared
5973 between the implementations for prime fields and binary fields;
5974 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
5975 are essentially identical to their ..._GFp counterparts.
5976 (For simplicity, the '..._GFp' prefix has been dropped from
5977 various internal method names.)
5979 An internal 'field_div' method (similar to 'field_mul' and
5980 'field_sqr') has been added; this is used only for binary fields.
5982 [Sheueling Chang Shantz and Douglas Stebila
5983 (Sun Microsystems Laboratories)]
5985 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
5986 through methods ('mul', 'precompute_mult').
5988 The generic implementations (now internally called 'ec_wNAF_mul'
5989 and 'ec_wNAF_precomputed_mult') remain the default if these
5990 methods are undefined.
5992 [Sheueling Chang Shantz and Douglas Stebila
5993 (Sun Microsystems Laboratories)]
5995 *) New function EC_GROUP_get_degree, which is defined through
5996 EC_METHOD. For curves over prime fields, this returns the bit
5997 length of the modulus.
5999 [Sheueling Chang Shantz and Douglas Stebila
6000 (Sun Microsystems Laboratories)]
6002 *) New functions EC_GROUP_dup, EC_POINT_dup.
6003 (These simply call ..._new and ..._copy).
6005 [Sheueling Chang Shantz and Douglas Stebila
6006 (Sun Microsystems Laboratories)]
6008 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
6009 Polynomials are represented as BIGNUMs (where the sign bit is not
6010 used) in the following functions [macros]:
6013 BN_GF2m_sub [= BN_GF2m_add]
6014 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
6015 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
6016 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
6018 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
6019 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
6020 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
6021 BN_GF2m_cmp [= BN_ucmp]
6023 (Note that only the 'mod' functions are actually for fields GF(2^m).
6024 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
6026 For some functions, an the irreducible polynomial defining a
6027 field can be given as an 'unsigned int[]' with strictly
6028 decreasing elements giving the indices of those bits that are set;
6029 i.e., p[] represents the polynomial
6030 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
6032 p[0] > p[1] > ... > p[k] = 0.
6033 This applies to the following functions:
6038 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
6039 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
6041 BN_GF2m_mod_sqrt_arr
6042 BN_GF2m_mod_solve_quad_arr
6046 Conversion can be performed by the following functions:
6051 bntest.c has additional tests for binary polynomial arithmetic.
6053 Two implementations for BN_GF2m_mod_div() are available.
6054 The default algorithm simply uses BN_GF2m_mod_inv() and
6055 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
6056 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
6057 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
6059 [Sheueling Chang Shantz and Douglas Stebila
6060 (Sun Microsystems Laboratories)]
6062 *) Add new error code 'ERR_R_DISABLED' that can be used when some
6063 functionality is disabled at compile-time.
6064 [Douglas Stebila <douglas.stebila@sun.com>]
6066 *) Change default behaviour of 'openssl asn1parse' so that more
6067 information is visible when viewing, e.g., a certificate:
6069 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
6070 mode the content of non-printable OCTET STRINGs is output in a
6071 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
6072 avoid the appearance of a printable string.
6073 [Nils Larsch <nla@trustcenter.de>]
6075 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
6077 EC_GROUP_set_asn1_flag()
6078 EC_GROUP_get_asn1_flag()
6079 EC_GROUP_set_point_conversion_form()
6080 EC_GROUP_get_point_conversion_form()
6081 These control ASN1 encoding details:
6082 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
6083 has been set to OPENSSL_EC_NAMED_CURVE.
6084 - Points are encoded in uncompressed form by default; options for
6085 asn1_for are as for point2oct, namely
6086 POINT_CONVERSION_COMPRESSED
6087 POINT_CONVERSION_UNCOMPRESSED
6088 POINT_CONVERSION_HYBRID
6090 Also add 'seed' and 'seed_len' members to EC_GROUP with access
6093 EC_GROUP_get0_seed()
6094 EC_GROUP_get_seed_len()
6095 This is used only for ASN1 purposes (so far).
6096 [Nils Larsch <nla@trustcenter.de>]
6098 *) Add 'field_type' member to EC_METHOD, which holds the NID
6099 of the appropriate field type OID. The new function
6100 EC_METHOD_get_field_type() returns this value.
6101 [Nils Larsch <nla@trustcenter.de>]
6106 EC_POINT_point2hex()
6107 EC_POINT_hex2point()
6108 providing useful interfaces to EC_POINT_point2oct() and
6109 EC_POINT_oct2point().
6110 [Nils Larsch <nla@trustcenter.de>]
6112 *) Change internals of the EC library so that the functions
6113 EC_GROUP_set_generator()
6114 EC_GROUP_get_generator()
6115 EC_GROUP_get_order()
6116 EC_GROUP_get_cofactor()
6117 are implemented directly in crypto/ec/ec_lib.c and not dispatched
6118 to methods, which would lead to unnecessary code duplication when
6119 adding different types of curves.
6120 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
6122 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
6123 arithmetic, and such that modified wNAFs are generated
6124 (which avoid length expansion in many cases).
6127 *) Add a function EC_GROUP_check_discriminant() (defined via
6128 EC_METHOD) that verifies that the curve discriminant is non-zero.
6130 Add a function EC_GROUP_check() that makes some sanity tests
6131 on a EC_GROUP, its generator and order. This includes
6132 EC_GROUP_check_discriminant().
6133 [Nils Larsch <nla@trustcenter.de>]
6135 *) Add ECDSA in new directory crypto/ecdsa/.
6137 Add applications 'openssl ecparam' and 'openssl ecdsa'
6138 (these are based on 'openssl dsaparam' and 'openssl dsa').
6140 ECDSA support is also included in various other files across the
6141 library. Most notably,
6142 - 'openssl req' now has a '-newkey ecdsa:file' option;
6143 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
6144 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
6145 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
6146 them suitable for ECDSA where domain parameters must be
6147 extracted before the specific public key;
6148 - ECDSA engine support has been added.
6149 [Nils Larsch <nla@trustcenter.de>]
6151 *) Include some named elliptic curves, and add OIDs from X9.62,
6152 SECG, and WAP/WTLS. Each curve can be obtained from the new
6154 EC_GROUP_new_by_curve_name(),
6155 and the list of available named curves can be obtained with
6156 EC_get_builtin_curves().
6157 Also add a 'curve_name' member to EC_GROUP objects, which can be
6159 EC_GROUP_set_curve_name()
6160 EC_GROUP_get_curve_name()
6161 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
6163 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
6164 was actually never needed) and in BN_mul(). The removal in BN_mul()
6165 required a small change in bn_mul_part_recursive() and the addition
6166 of the functions bn_cmp_part_words(), bn_sub_part_words() and
6167 bn_add_part_words(), which do the same thing as bn_cmp_words(),
6168 bn_sub_words() and bn_add_words() except they take arrays with
6172 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
6174 *) Cleanse PEM buffers before freeing them since they may contain
6176 [Benjamin Bennett <ben@psc.edu>]
6178 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
6179 a ciphersuite string such as "DEFAULT:RSA" cannot enable
6180 authentication-only ciphersuites.
6183 *) Since AES128 and AES256 share a single mask bit in the logic of
6184 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
6185 kludge to work properly if AES128 is available and AES256 isn't.
6188 *) Expand security boundary to match 1.1.1 module.
6191 *) Remove redundant features: hash file source, editing of test vectors
6192 modify fipsld to use external fips_premain.c signature.
6195 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
6196 run algorithm test programs.
6199 *) Make algorithm test programs more tolerant of whitespace.
6202 *) Have SSL/TLS server implementation tolerate "mismatched" record
6203 protocol version while receiving ClientHello even if the
6204 ClientHello is fragmented. (The server can't insist on the
6205 particular protocol version it has chosen before the ServerHello
6206 message has informed the client about his choice.)
6209 *) Load error codes if they are not already present instead of using a
6210 static variable. This allows them to be cleanly unloaded and reloaded.
6213 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
6215 *) Introduce limits to prevent malicious keys being able to
6216 cause a denial of service. (CVE-2006-2940)
6217 [Steve Henson, Bodo Moeller]
6219 *) Fix ASN.1 parsing of certain invalid structures that can result
6220 in a denial of service. (CVE-2006-2937) [Steve Henson]
6222 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
6223 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
6225 *) Fix SSL client code which could crash if connecting to a
6226 malicious SSLv2 server. (CVE-2006-4343)
6227 [Tavis Ormandy and Will Drewry, Google Security Team]
6229 *) Change ciphersuite string processing so that an explicit
6230 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
6231 will no longer include "AES128-SHA"), and any other similar
6232 ciphersuite (same bitmap) from *other* protocol versions (so that
6233 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
6234 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
6235 changes from 0.9.8b and 0.9.8d.
6238 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
6240 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
6241 (CVE-2006-4339) [Ben Laurie and Google Security Team]
6243 *) Change the Unix randomness entropy gathering to use poll() when
6244 possible instead of select(), since the latter has some
6245 undesirable limitations.
6246 [Darryl Miles via Richard Levitte and Bodo Moeller]
6248 *) Disable rogue ciphersuites:
6250 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
6251 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
6252 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
6254 The latter two were purportedly from
6255 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
6258 Also deactivate the remaining ciphersuites from
6259 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
6260 unofficial, and the ID has long expired.
6263 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
6264 dual-core machines) and other potential thread-safety issues.
6267 Changes between 0.9.7i and 0.9.7j [04 May 2006]
6269 *) Adapt fipsld and the build system to link against the validated FIPS
6270 module in FIPS mode.
6273 *) Fixes for VC++ 2005 build under Windows.
6276 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
6277 from a Windows bash shell such as MSYS. It is autodetected from the
6278 "config" script when run from a VC++ environment. Modify standard VC++
6279 build to use fipscanister.o from the GNU make build.
6282 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
6284 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
6285 The value now differs depending on if you build for FIPS or not.
6286 BEWARE! A program linked with a shared FIPSed libcrypto can't be
6287 safely run with a non-FIPSed libcrypto, as it may crash because of
6288 the difference induced by this change.
6291 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
6293 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
6294 (part of SSL_OP_ALL). This option used to disable the
6295 countermeasure against man-in-the-middle protocol-version
6296 rollback in the SSL 2.0 server implementation, which is a bad
6297 idea. (CVE-2005-2969)
6299 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
6300 for Information Security, National Institute of Advanced Industrial
6301 Science and Technology [AIST], Japan)]
6303 *) Minimal support for X9.31 signatures and PSS padding modes. This is
6304 mainly for FIPS compliance and not fully integrated at this stage.
6307 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
6308 the exponentiation using a fixed-length exponent. (Otherwise,
6309 the information leaked through timing could expose the secret key
6310 after many signatures; cf. Bleichenbacher's attack on DSA with
6314 *) Make a new fixed-window mod_exp implementation the default for
6315 RSA, DSA, and DH private-key operations so that the sequence of
6316 squares and multiplies and the memory access pattern are
6317 independent of the particular secret key. This will mitigate
6318 cache-timing and potential related attacks.
6320 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
6321 and this is automatically used by BN_mod_exp_mont() if the new flag
6322 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
6323 will use this BN flag for private exponents unless the flag
6324 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
6325 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
6327 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
6329 *) Change the client implementation for SSLv23_method() and
6330 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
6331 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
6332 (Previously, the SSL 2.0 backwards compatible Client Hello
6333 message format would be used even with SSL_OP_NO_SSLv2.)
6336 *) Add support for smime-type MIME parameter in S/MIME messages which some
6340 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
6341 a threadsafe manner. Modify rsa code to use new function and add calls
6342 to dsa and dh code (which had race conditions before).
6345 *) Include the fixed error library code in the C error file definitions
6346 instead of fixing them up at runtime. This keeps the error code
6347 structures constant.
6350 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
6352 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
6355 *) Fixes for newer kerberos headers. NB: the casts are needed because
6356 the 'length' field is signed on one version and unsigned on another
6357 with no (?) obvious way to tell the difference, without these VC++
6358 complains. Also the "definition" of FAR (blank) is no longer included
6359 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
6360 some needed definitions.
6363 *) Undo Cygwin change.
6366 *) Added support for proxy certificates according to RFC 3820.
6367 Because they may be a security thread to unaware applications,
6368 they must be explicitly allowed in run-time. See
6369 docs/HOWTO/proxy_certificates.txt for further information.
6372 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
6374 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
6375 server and client random values. Previously
6376 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
6377 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
6379 This change has negligible security impact because:
6381 1. Server and client random values still have 24 bytes of pseudo random
6384 2. Server and client random values are sent in the clear in the initial
6387 3. The master secret is derived using the premaster secret (48 bytes in
6388 size for static RSA ciphersuites) as well as client server and random
6391 The OpenSSL team would like to thank the UK NISCC for bringing this issue
6394 [Stephen Henson, reported by UK NISCC]
6396 *) Use Windows randomness collection on Cygwin.
6399 *) Fix hang in EGD/PRNGD query when communication socket is closed
6400 prematurely by EGD/PRNGD.
6401 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
6403 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6406 *) Back-port of selected performance improvements from development
6407 branch, as well as improved support for PowerPC platforms.
6410 *) Add lots of checks for memory allocation failure, error codes to indicate
6411 failure and freeing up memory if a failure occurs.
6412 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6414 *) Add new -passin argument to dgst.
6417 *) Perform some character comparisons of different types in X509_NAME_cmp:
6418 this is needed for some certificates that re-encode DNs into UTF8Strings
6419 (in violation of RFC3280) and can't or won't issue name rollover
6423 *) Make an explicit check during certificate validation to see that
6424 the CA setting in each certificate on the chain is correct. As a
6425 side effect always do the following basic checks on extensions,
6426 not just when there's an associated purpose to the check:
6428 - if there is an unhandled critical extension (unless the user
6429 has chosen to ignore this fault)
6430 - if the path length has been exceeded (if one is set at all)
6431 - that certain extensions fit the associated purpose (if one has
6435 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6437 *) Avoid a race condition when CRLs are checked in a multi threaded
6438 environment. This would happen due to the reordering of the revoked
6439 entries during signature checking and serial number lookup. Now the
6440 encoding is cached and the serial number sort performed under a lock.
6441 Add new STACK function sk_is_sorted().
6444 *) Add Delta CRL to the extension code.
6447 *) Various fixes to s3_pkt.c so alerts are sent properly.
6448 [David Holmes <d.holmes@f5.com>]
6450 *) Reduce the chances of duplicate issuer name and serial numbers (in
6451 violation of RFC3280) using the OpenSSL certificate creation utilities.
6452 This is done by creating a random 64 bit value for the initial serial
6453 number when a serial number file is created or when a self signed
6454 certificate is created using 'openssl req -x509'. The initial serial
6455 number file is created using 'openssl x509 -next_serial' in CA.pl
6456 rather than being initialized to 1.
6459 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6461 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6462 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6463 [Joe Orton, Steve Henson]
6465 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
6467 [Joe Orton, Steve Henson]
6469 *) Make it possible to have multiple active certificates with the same
6470 subject in the CA index file. This is done only if the keyword
6471 'unique_subject' is set to 'no' in the main CA section (default
6472 if 'CA_default') of the configuration file. The value is saved
6473 with the database itself in a separate index attribute file,
6474 named like the index file with '.attr' appended to the name.
6477 *) X509 verify fixes. Disable broken certificate workarounds when
6478 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
6479 keyUsage extension present. Don't accept CRLs with unhandled critical
6480 extensions: since verify currently doesn't process CRL extensions this
6481 rejects a CRL with *any* critical extensions. Add new verify error codes
6485 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
6486 A clarification of RFC2560 will require the use of OCTET STRINGs and
6487 some implementations cannot handle the current raw format. Since OpenSSL
6488 copies and compares OCSP nonces as opaque blobs without any attempt at
6489 parsing them this should not create any compatibility issues.
6492 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
6493 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
6494 this HMAC (and other) operations are several times slower than OpenSSL
6498 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
6499 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6501 *) Use the correct content when signing type "other".
6504 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
6506 *) Fix various bugs revealed by running the NISCC test suite:
6508 Stop out of bounds reads in the ASN1 code when presented with
6509 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6511 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
6513 If verify callback ignores invalid public key errors don't try to check
6514 certificate signature with the NULL public key.
6518 *) New -ignore_err option in ocsp application to stop the server
6519 exiting on the first error in a request.
6522 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6523 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6527 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6528 extra data after the compression methods not only for TLS 1.0
6529 but also for SSL 3.0 (as required by the specification).
6530 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6532 *) Change X509_certificate_type() to mark the key as exported/exportable
6533 when it's 512 *bits* long, not 512 bytes.
6536 *) Change AES_cbc_encrypt() so it outputs exact multiple of
6537 blocks during encryption.
6540 *) Various fixes to base64 BIO and non blocking I/O. On write
6541 flushes were not handled properly if the BIO retried. On read
6542 data was not being buffered properly and had various logic bugs.
6543 This also affects blocking I/O when the data being decoded is a
6547 *) Various S/MIME bugfixes and compatibility changes:
6548 output correct application/pkcs7 MIME type if
6549 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
6550 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
6551 of files as .eml work). Correctly handle very long lines in MIME
6555 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
6557 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6558 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6559 a protocol version number mismatch like a decryption error
6560 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6563 *) Turn on RSA blinding by default in the default implementation
6564 to avoid a timing attack. Applications that don't want it can call
6565 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6566 They would be ill-advised to do so in most cases.
6567 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6569 *) Change RSA blinding code so that it works when the PRNG is not
6570 seeded (in this case, the secret RSA exponent is abused as
6571 an unpredictable seed -- if it is not unpredictable, there
6572 is no point in blinding anyway). Make RSA blinding thread-safe
6573 by remembering the creator's thread ID in rsa->blinding and
6574 having all other threads use local one-time blinding factors
6575 (this requires more computation than sharing rsa->blinding, but
6576 avoids excessive locking; and if an RSA object is not shared
6577 between threads, blinding will still be very fast).
6580 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
6581 ENGINE as defaults for all supported algorithms irrespective of
6582 the 'flags' parameter. 'flags' is now honoured, so applications
6583 should make sure they are passing it correctly.
6586 *) Target "mingw" now allows native Windows code to be generated in
6587 the Cygwin environment as well as with the MinGW compiler.
6590 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
6592 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6593 via timing by performing a MAC computation even if incorrect
6594 block cipher padding has been found. This is a countermeasure
6595 against active attacks where the attacker has to distinguish
6596 between bad padding and a MAC verification error. (CVE-2003-0078)
6598 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6599 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6600 Martin Vuagnoux (EPFL, Ilion)]
6602 *) Make the no-err option work as intended. The intention with no-err
6603 is not to have the whole error stack handling routines removed from
6604 libcrypto, it's only intended to remove all the function name and
6605 reason texts, thereby removing some of the footprint that may not
6606 be interesting if those errors aren't displayed anyway.
6608 NOTE: it's still possible for any application or module to have it's
6609 own set of error texts inserted. The routines are there, just not
6610 used by default when no-err is given.
6613 *) Add support for FreeBSD on IA64.
6614 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6616 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6617 Kerberos function mit_des_cbc_cksum(). Before this change,
6618 the value returned by DES_cbc_cksum() was like the one from
6619 mit_des_cbc_cksum(), except the bytes were swapped.
6620 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6622 *) Allow an application to disable the automatic SSL chain building.
6623 Before this a rather primitive chain build was always performed in
6624 ssl3_output_cert_chain(): an application had no way to send the
6625 correct chain if the automatic operation produced an incorrect result.
6627 Now the chain builder is disabled if either:
6629 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
6631 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
6633 The reasoning behind this is that an application would not want the
6634 auto chain building to take place if extra chain certificates are
6635 present and it might also want a means of sending no additional
6636 certificates (for example the chain has two certificates and the
6640 *) Add the possibility to build without the ENGINE framework.
6641 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6643 *) Under Win32 gmtime() can return NULL: check return value in
6644 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
6647 *) DSA routines: under certain error conditions uninitialized BN objects
6648 could be freed. Solution: make sure initialization is performed early
6649 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
6650 Nils Larsch <nla@trustcenter.de> via PR#459)
6653 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
6654 checked on reconnect on the client side, therefore session resumption
6655 could still fail with a "ssl session id is different" error. This
6656 behaviour is masked when SSL_OP_ALL is used due to
6657 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
6658 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6659 followup to PR #377.
6662 *) IA-32 assembler support enhancements: unified ELF targets, support
6663 for SCO/Caldera platforms, fix for Cygwin shared build.
6666 *) Add support for FreeBSD on sparc64. As a consequence, support for
6667 FreeBSD on non-x86 processors is separate from x86 processors on
6668 the config script, much like the NetBSD support.
6669 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
6671 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
6673 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
6676 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
6677 code (06) was taken as the first octet of the session ID and the last
6678 octet was ignored consequently. As a result SSLv2 client side session
6679 caching could not have worked due to the session ID mismatch between
6681 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6685 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
6686 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
6690 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
6691 seems that in spite of existing for more than a year, many application
6692 author have done nothing to provide the necessary callbacks, which
6693 means that this particular engine will not work properly anywhere.
6694 This is a very unfortunate situation which forces us, in the name
6695 of usability, to give the hw_ncipher.c a static lock, which is part
6697 NOTE: This is for the 0.9.7 series ONLY. This hack will never
6698 appear in 0.9.8 or later. We EXPECT application authors to have
6699 dealt properly with this when 0.9.8 is released (unless we actually
6700 make such changes in the libcrypto locking code that changes will
6701 have to be made anyway).
6704 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
6705 octets have been read, EOF or an error occurs. Without this change
6706 some truncated ASN1 structures will not produce an error.
6709 *) Disable Heimdal support, since it hasn't been fully implemented.
6710 Still give the possibility to force the use of Heimdal, but with
6711 warnings and a request that patches get sent to openssl-dev.
6714 *) Add the VC-CE target, introduce the WINCE sysname, and add
6715 INSTALL.WCE and appropriate conditionals to make it build.
6716 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6718 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
6719 cygssl-x.y.z.dll, where x, y and z are the major, minor and
6720 edit numbers of the version.
6721 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6723 *) Introduce safe string copy and catenation functions
6724 (BUF_strlcpy() and BUF_strlcat()).
6725 [Ben Laurie (CHATS) and Richard Levitte]
6727 *) Avoid using fixed-size buffers for one-line DNs.
6728 [Ben Laurie (CHATS)]
6730 *) Add BUF_MEM_grow_clean() to avoid information leakage when
6731 resizing buffers containing secrets, and use where appropriate.
6732 [Ben Laurie (CHATS)]
6734 *) Avoid using fixed size buffers for configuration file location.
6735 [Ben Laurie (CHATS)]
6737 *) Avoid filename truncation for various CA files.
6738 [Ben Laurie (CHATS)]
6740 *) Use sizeof in preference to magic numbers.
6741 [Ben Laurie (CHATS)]
6743 *) Avoid filename truncation in cert requests.
6744 [Ben Laurie (CHATS)]
6746 *) Add assertions to check for (supposedly impossible) buffer
6748 [Ben Laurie (CHATS)]
6750 *) Don't cache truncated DNS entries in the local cache (this could
6751 potentially lead to a spoofing attack).
6752 [Ben Laurie (CHATS)]
6754 *) Fix various buffers to be large enough for hex/decimal
6755 representations in a platform independent manner.
6756 [Ben Laurie (CHATS)]
6758 *) Add CRYPTO_realloc_clean() to avoid information leakage when
6759 resizing buffers containing secrets, and use where appropriate.
6760 [Ben Laurie (CHATS)]
6762 *) Add BIO_indent() to avoid much slightly worrying code to do
6764 [Ben Laurie (CHATS)]
6766 *) Convert sprintf()/BIO_puts() to BIO_printf().
6767 [Ben Laurie (CHATS)]
6769 *) buffer_gets() could terminate with the buffer only half
6771 [Ben Laurie (CHATS)]
6773 *) Add assertions to prevent user-supplied crypto functions from
6774 overflowing internal buffers by having large block sizes, etc.
6775 [Ben Laurie (CHATS)]
6777 *) New OPENSSL_assert() macro (similar to assert(), but enabled
6779 [Ben Laurie (CHATS)]
6781 *) Eliminate unused copy of key in RC4.
6782 [Ben Laurie (CHATS)]
6784 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
6785 [Ben Laurie (CHATS)]
6787 *) Fix off-by-one error in EGD path.
6788 [Ben Laurie (CHATS)]
6790 *) If RANDFILE path is too long, ignore instead of truncating.
6791 [Ben Laurie (CHATS)]
6793 *) Eliminate unused and incorrectly sized X.509 structure
6795 [Ben Laurie (CHATS)]
6797 *) Eliminate unused and dangerous function knumber().
6798 [Ben Laurie (CHATS)]
6800 *) Eliminate unused and dangerous structure, KSSL_ERR.
6801 [Ben Laurie (CHATS)]
6803 *) Protect against overlong session ID context length in an encoded
6804 session object. Since these are local, this does not appear to be
6806 [Ben Laurie (CHATS)]
6808 *) Change from security patch (see 0.9.6e below) that did not affect
6809 the 0.9.6 release series:
6811 Remote buffer overflow in SSL3 protocol - an attacker could
6812 supply an oversized master key in Kerberos-enabled versions.
6814 [Ben Laurie (CHATS)]
6816 *) Change the SSL kerb5 codes to match RFC 2712.
6819 *) Make -nameopt work fully for req and add -reqopt switch.
6820 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
6822 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
6823 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
6825 *) Make sure tests can be performed even if the corresponding algorithms
6826 have been removed entirely. This was also the last step to make
6827 OpenSSL compilable with DJGPP under all reasonable conditions.
6828 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
6830 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
6831 to allow version independent disabling of normally unselected ciphers,
6832 which may be activated as a side-effect of selecting a single cipher.
6834 (E.g., cipher list string "RSA" enables ciphersuites that are left
6835 out of "ALL" because they do not provide symmetric encryption.
6836 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
6837 [Lutz Jaenicke, Bodo Moeller]
6839 *) Add appropriate support for separate platform-dependent build
6840 directories. The recommended way to make a platform-dependent
6841 build directory is the following (tested on Linux), maybe with
6844 # Place yourself outside of the OpenSSL source tree. In
6845 # this example, the environment variable OPENSSL_SOURCE
6846 # is assumed to contain the absolute OpenSSL source directory.
6847 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
6848 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
6849 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
6850 mkdir -p `dirname $F`
6851 ln -s $OPENSSL_SOURCE/$F $F
6854 To be absolutely sure not to disturb the source tree, a "make clean"
6855 is a good thing. If it isn't successful, don't worry about it,
6856 it probably means the source directory is very clean.
6859 *) Make sure any ENGINE control commands make local copies of string
6860 pointers passed to them whenever necessary. Otherwise it is possible
6861 the caller may have overwritten (or deallocated) the original string
6862 data when a later ENGINE operation tries to use the stored values.
6863 [Götz Babin-Ebell <babinebell@trustcenter.de>]
6865 *) Improve diagnostics in file reading and command-line digests.
6866 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
6868 *) Add AES modes CFB and OFB to the object database. Correct an
6869 error in AES-CFB decryption.
6872 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
6873 allows existing EVP_CIPHER_CTX structures to be reused after
6874 calling EVP_*Final(). This behaviour is used by encryption
6875 BIOs and some applications. This has the side effect that
6876 applications must explicitly clean up cipher contexts with
6877 EVP_CIPHER_CTX_cleanup() or they will leak memory.
6880 *) Check the values of dna and dnb in bn_mul_recursive before calling
6881 bn_mul_comba (a non zero value means the a or b arrays do not contain
6882 n2 elements) and fallback to bn_mul_normal if either is not zero.
6885 *) Fix escaping of non-ASCII characters when using the -subj option
6886 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
6889 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
6890 form for "surname", serialNumber has no short form.
6891 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
6892 therefore remove "mail" short name for "internet 7".
6893 The OID for unique identifiers in X509 certificates is
6894 x500UniqueIdentifier, not uniqueIdentifier.
6895 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
6898 *) Add an "init" command to the ENGINE config module and auto initialize
6899 ENGINEs. Without any "init" command the ENGINE will be initialized
6900 after all ctrl commands have been executed on it. If init=1 the
6901 ENGINE is initialized at that point (ctrls before that point are run
6902 on the uninitialized ENGINE and after on the initialized one). If
6903 init=0 then the ENGINE will not be initialized at all.
6906 *) Fix the 'app_verify_callback' interface so that the user-defined
6907 argument is actually passed to the callback: In the
6908 SSL_CTX_set_cert_verify_callback() prototype, the callback
6909 declaration has been changed from
6912 int (*cb)(X509_STORE_CTX *,void *);
6913 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
6914 i=s->ctx->app_verify_callback(&ctx)
6915 has been changed into
6916 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
6918 To update applications using SSL_CTX_set_cert_verify_callback(),
6919 a dummy argument can be added to their callback functions.
6920 [D. K. Smetters <smetters@parc.xerox.com>]
6922 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
6923 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
6925 *) Add and OPENSSL_LOAD_CONF define which will cause
6926 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
6927 This allows older applications to transparently support certain
6928 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
6929 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
6930 load the config file and OPENSSL_add_all_algorithms_conf() which will
6931 always load it have also been added.
6934 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
6935 Adjust NIDs and EVP layer.
6936 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6938 *) Config modules support in openssl utility.
6940 Most commands now load modules from the config file,
6941 though in a few (such as version) this isn't done
6942 because it couldn't be used for anything.
6944 In the case of ca and req the config file used is
6945 the same as the utility itself: that is the -config
6946 command line option can be used to specify an
6950 *) Move default behaviour from OPENSSL_config(). If appname is NULL
6951 use "openssl_conf" if filename is NULL use default openssl config file.
6954 *) Add an argument to OPENSSL_config() to allow the use of an alternative
6955 config section name. Add a new flag to tolerate a missing config file
6956 and move code to CONF_modules_load_file().
6959 *) Support for crypto accelerator cards from Accelerated Encryption
6960 Processing, www.aep.ie. (Use engine 'aep')
6961 The support was copied from 0.9.6c [engine] and adapted/corrected
6962 to work with the new engine framework.
6963 [AEP Inc. and Richard Levitte]
6965 *) Support for SureWare crypto accelerator cards from Baltimore
6966 Technologies. (Use engine 'sureware')
6967 The support was copied from 0.9.6c [engine] and adapted
6968 to work with the new engine framework.
6971 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
6972 make the newer ENGINE framework commands for the CHIL engine work.
6973 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
6975 *) Make it possible to produce shared libraries on ReliantUNIX.
6976 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
6978 *) Add the configuration target debug-linux-ppro.
6979 Make 'openssl rsa' use the general key loading routines
6980 implemented in apps.c, and make those routines able to
6981 handle the key format FORMAT_NETSCAPE and the variant
6983 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6985 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6986 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6988 *) Add -keyform to rsautl, and document -engine.
6989 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
6991 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
6992 BIO_R_NO_SUCH_FILE error code rather than the generic
6993 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
6996 *) Add new functions
6998 ERR_peek_last_error_line
6999 ERR_peek_last_error_line_data.
7000 These are similar to
7003 ERR_peek_error_line_data,
7004 but report on the latest error recorded rather than the first one
7005 still in the error queue.
7006 [Ben Laurie, Bodo Moeller]
7008 *) default_algorithms option in ENGINE config module. This allows things
7010 default_algorithms = ALL
7011 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
7014 *) Preliminary ENGINE config module.
7017 *) New experimental application configuration code.
7020 *) Change the AES code to follow the same name structure as all other
7021 symmetric ciphers, and behave the same way. Move everything to
7022 the directory crypto/aes, thereby obsoleting crypto/rijndael.
7023 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
7025 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
7026 [Ben Laurie and Theo de Raadt]
7028 *) Add option to output public keys in req command.
7029 [Massimiliano Pala madwolf@openca.org]
7031 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
7032 (up to about 10% better than before for P-192 and P-224).
7035 *) New functions/macros
7037 SSL_CTX_set_msg_callback(ctx, cb)
7038 SSL_CTX_set_msg_callback_arg(ctx, arg)
7039 SSL_set_msg_callback(ssl, cb)
7040 SSL_set_msg_callback_arg(ssl, arg)
7042 to request calling a callback function
7044 void cb(int write_p, int version, int content_type,
7045 const void *buf, size_t len, SSL *ssl, void *arg)
7047 whenever a protocol message has been completely received
7048 (write_p == 0) or sent (write_p == 1). Here 'version' is the
7049 protocol version according to which the SSL library interprets
7050 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
7051 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
7052 the content type as defined in the SSL 3.0/TLS 1.0 protocol
7053 specification (change_cipher_spec(20), alert(21), handshake(22)).
7054 'buf' and 'len' point to the actual message, 'ssl' to the
7055 SSL object, and 'arg' is the application-defined value set by
7056 SSL[_CTX]_set_msg_callback_arg().
7058 'openssl s_client' and 'openssl s_server' have new '-msg' options
7059 to enable a callback that displays all protocol messages.
7062 *) Change the shared library support so shared libraries are built as
7063 soon as the corresponding static library is finished, and thereby get
7064 openssl and the test programs linked against the shared library.
7065 This still only happens when the keyword "shard" has been given to
7066 the configuration scripts.
7068 NOTE: shared library support is still an experimental thing, and
7069 backward binary compatibility is still not guaranteed.
7070 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
7072 *) Add support for Subject Information Access extension.
7073 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
7075 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
7076 additional bytes when new memory had to be allocated, not just
7077 when reusing an existing buffer.
7080 *) New command line and configuration option 'utf8' for the req command.
7081 This allows field values to be specified as UTF8 strings.
7084 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
7085 runs for the former and machine-readable output for the latter.
7088 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
7089 of the e-mail address in the DN (i.e., it will go into a certificate
7090 extension only). The new configuration file option 'email_in_dn = no'
7091 has the same effect.
7092 [Massimiliano Pala madwolf@openca.org]
7094 *) Change all functions with names starting with des_ to be starting
7095 with DES_ instead. Add wrappers that are compatible with libdes,
7096 but are named _ossl_old_des_*. Finally, add macros that map the
7097 des_* symbols to the corresponding _ossl_old_des_* if libdes
7098 compatibility is desired. If OpenSSL 0.9.6c compatibility is
7099 desired, the des_* symbols will be mapped to DES_*, with one
7102 Since we provide two compatibility mappings, the user needs to
7103 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
7104 compatibility is desired. The default (i.e., when that macro
7105 isn't defined) is OpenSSL 0.9.6c compatibility.
7107 There are also macros that enable and disable the support of old
7108 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
7109 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
7110 are defined, the default will apply: to support the old des routines.
7112 In either case, one must include openssl/des.h to get the correct
7113 definitions. Do not try to just include openssl/des_old.h, that
7116 NOTE: This is a major break of an old API into a new one. Software
7117 authors are encouraged to switch to the DES_ style functions. Some
7118 time in the future, des_old.h and the libdes compatibility functions
7119 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
7120 default), and then completely removed.
7123 *) Test for certificates which contain unsupported critical extensions.
7124 If such a certificate is found during a verify operation it is
7125 rejected by default: this behaviour can be overridden by either
7126 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
7127 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
7128 X509_supported_extension() has also been added which returns 1 if a
7129 particular extension is supported.
7132 *) Modify the behaviour of EVP cipher functions in similar way to digests
7133 to retain compatibility with existing code.
7136 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
7137 compatibility with existing code. In particular the 'ctx' parameter does
7138 not have to be to be initialized before the call to EVP_DigestInit() and
7139 it is tidied up after a call to EVP_DigestFinal(). New function
7140 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
7141 EVP_MD_CTX_copy() changed to not require the destination to be
7142 initialized valid and new function EVP_MD_CTX_copy_ex() added which
7143 requires the destination to be valid.
7145 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
7146 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
7149 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
7150 so that complete 'Handshake' protocol structures are kept in memory
7151 instead of overwriting 'msg_type' and 'length' with 'body' data.
7154 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
7155 [Massimo Santin via Richard Levitte]
7157 *) Major restructuring to the underlying ENGINE code. This includes
7158 reduction of linker bloat, separation of pure "ENGINE" manipulation
7159 (initialisation, etc) from functionality dealing with implementations
7160 of specific crypto interfaces. This change also introduces integrated
7161 support for symmetric ciphers and digest implementations - so ENGINEs
7162 can now accelerate these by providing EVP_CIPHER and EVP_MD
7163 implementations of their own. This is detailed in crypto/engine/README
7164 as it couldn't be adequately described here. However, there are a few
7165 API changes worth noting - some RSA, DSA, DH, and RAND functions that
7166 were changed in the original introduction of ENGINE code have now
7167 reverted back - the hooking from this code to ENGINE is now a good
7168 deal more passive and at run-time, operations deal directly with
7169 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
7170 dereferencing through an ENGINE pointer any more. Also, the ENGINE
7171 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
7172 they were not being used by the framework as there is no concept of a
7173 BIGNUM_METHOD and they could not be generalised to the new
7174 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
7175 ENGINE_cpy() has been removed as it cannot be consistently defined in
7179 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
7182 *) Change mkdef.pl to sort symbols that get the same entry number,
7183 and make sure the automatically generated functions ERR_load_*
7184 become part of libeay.num as well.
7187 *) New function SSL_renegotiate_pending(). This returns true once
7188 renegotiation has been requested (either SSL_renegotiate() call
7189 or HelloRequest/ClientHello received from the peer) and becomes
7190 false once a handshake has been completed.
7191 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
7192 sends a HelloRequest, but does not ensure that a handshake takes
7193 place. SSL_renegotiate_pending() is useful for checking if the
7194 client has followed the request.)
7197 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
7198 By default, clients may request session resumption even during
7199 renegotiation (if session ID contexts permit); with this option,
7200 session resumption is possible only in the first handshake.
7202 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
7203 more bits available for options that should not be part of
7204 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
7207 *) Add some demos for certificate and certificate request creation.
7210 *) Make maximum certificate chain size accepted from the peer application
7211 settable (SSL*_get/set_max_cert_list()), as proposed by
7212 "Douglas E. Engert" <deengert@anl.gov>.
7215 *) Add support for shared libraries for Unixware-7
7216 (Boyd Lynn Gerber <gerberb@zenez.com>).
7219 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
7220 be done prior to destruction. Use this to unload error strings from
7221 ENGINEs that load their own error strings. NB: This adds two new API
7222 functions to "get" and "set" this destroy handler in an ENGINE.
7225 *) Alter all existing ENGINE implementations (except "openssl" and
7226 "openbsd") to dynamically instantiate their own error strings. This
7227 makes them more flexible to be built both as statically-linked ENGINEs
7228 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
7229 Also, add stub code to each that makes building them as self-contained
7230 shared-libraries easier (see README.ENGINE).
7233 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
7234 implementations into applications that are completely implemented in
7235 self-contained shared-libraries. The "dynamic" ENGINE exposes control
7236 commands that can be used to configure what shared-library to load and
7237 to control aspects of the way it is handled. Also, made an update to
7238 the README.ENGINE file that brings its information up-to-date and
7239 provides some information and instructions on the "dynamic" ENGINE
7240 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
7243 *) Make it possible to unload ranges of ERR strings with a new
7244 "ERR_unload_strings" function.
7247 *) Add a copy() function to EVP_MD.
7250 *) Make EVP_MD routines take a context pointer instead of just the
7251 md_data void pointer.
7254 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
7255 that the digest can only process a single chunk of data
7256 (typically because it is provided by a piece of
7257 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
7258 is only going to provide a single chunk of data, and hence the
7259 framework needn't accumulate the data for oneshot drivers.
7262 *) As with "ERR", make it possible to replace the underlying "ex_data"
7263 functions. This change also alters the storage and management of global
7264 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
7265 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
7266 index counters. The API functions that use this state have been changed
7267 to take a "class_index" rather than pointers to the class's local STACK
7268 and counter, and there is now an API function to dynamically create new
7269 classes. This centralisation allows us to (a) plug a lot of the
7270 thread-safety problems that existed, and (b) makes it possible to clean
7271 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
7272 such data would previously have always leaked in application code and
7273 workarounds were in place to make the memory debugging turn a blind eye
7274 to it. Application code that doesn't use this new function will still
7275 leak as before, but their memory debugging output will announce it now
7276 rather than letting it slide.
7278 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
7279 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
7280 has a return value to indicate success or failure.
7283 *) Make it possible to replace the underlying "ERR" functions such that the
7284 global state (2 LHASH tables and 2 locks) is only used by the "default"
7285 implementation. This change also adds two functions to "get" and "set"
7286 the implementation prior to it being automatically set the first time
7287 any other ERR function takes place. Ie. an application can call "get",
7288 pass the return value to a module it has just loaded, and that module
7289 can call its own "set" function using that value. This means the
7290 module's "ERR" operations will use (and modify) the error state in the
7291 application and not in its own statically linked copy of OpenSSL code.
7294 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
7295 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
7296 the operation, and provides a more encapsulated way for external code
7297 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
7298 to use these functions rather than manually incrementing the counts.
7300 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
7303 *) Add EVP test program.
7306 *) Add symmetric cipher support to ENGINE. Expect the API to change!
7309 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
7310 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
7311 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
7312 These allow a CRL to be built without having to access X509_CRL fields
7313 directly. Modify 'ca' application to use new functions.
7316 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
7317 bug workarounds. Rollback attack detection is a security feature.
7318 The problem will only arise on OpenSSL servers when TLSv1 is not
7319 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
7320 Software authors not wanting to support TLSv1 will have special reasons
7321 for their choice and can explicitly enable this option.
7322 [Bodo Moeller, Lutz Jaenicke]
7324 *) Rationalise EVP so it can be extended: don't include a union of
7325 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
7326 (similar to those existing for EVP_CIPHER_CTX).
7331 EVP_MD_CTX_init(&md); /* new function call */
7332 EVP_DigestInit(&md, EVP_sha1());
7333 EVP_DigestUpdate(&md, in, len);
7334 EVP_DigestFinal(&md, out, NULL);
7335 EVP_MD_CTX_cleanup(&md); /* new function call */
7339 *) Make DES key schedule conform to the usual scheme, as well as
7340 correcting its structure. This means that calls to DES functions
7341 now have to pass a pointer to a des_key_schedule instead of a
7342 plain des_key_schedule (which was actually always a pointer
7345 des_key_schedule ks;
7347 des_set_key_checked(..., &ks);
7348 des_ncbc_encrypt(..., &ks, ...);
7350 (Note that a later change renames 'des_...' into 'DES_...'.)
7353 *) Initial reduction of linker bloat: the use of some functions, such as
7354 PEM causes large amounts of unused functions to be linked in due to
7355 poor organisation. For example pem_all.c contains every PEM function
7356 which has a knock on effect of linking in large amounts of (unused)
7357 ASN1 code. Grouping together similar functions and splitting unrelated
7358 functions prevents this.
7361 *) Cleanup of EVP macros.
7364 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
7365 correct _ecb suffix.
7368 *) Add initial OCSP responder support to ocsp application. The
7369 revocation information is handled using the text based index
7370 use by the ca application. The responder can either handle
7371 requests generated internally, supplied in files (for example
7372 via a CGI script) or using an internal minimal server.
7375 *) Add configuration choices to get zlib compression for TLS.
7378 *) Changes to Kerberos SSL for RFC 2712 compliance:
7379 1. Implemented real KerberosWrapper, instead of just using
7380 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
7381 2. Implemented optional authenticator field of KerberosWrapper.
7383 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
7384 and authenticator structs; see crypto/krb5/.
7386 Generalized Kerberos calls to support multiple Kerberos libraries.
7387 [Vern Staats <staatsvr@asc.hpc.mil>,
7388 Jeffrey Altman <jaltman@columbia.edu>
7389 via Richard Levitte]
7391 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
7392 already does with RSA. testdsa.h now has 'priv_key/pub_key'
7393 values for each of the key sizes rather than having just
7394 parameters (and 'speed' generating keys each time).
7397 *) Speed up EVP routines.
7400 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
7401 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
7402 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
7403 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
7405 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7406 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7407 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7410 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7412 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7415 *) Added the OS2-EMX target.
7416 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7418 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7419 to support NCONF routines in extension code. New function CONF_set_nconf()
7420 to allow functions which take an NCONF to also handle the old LHASH
7421 structure: this means that the old CONF compatible routines can be
7422 retained (in particular wrt extensions) without having to duplicate the
7423 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7426 *) Enhance the general user interface with mechanisms for inner control
7427 and with possibilities to have yes/no kind of prompts.
7430 *) Change all calls to low level digest routines in the library and
7431 applications to use EVP. Add missing calls to HMAC_cleanup() and
7432 don't assume HMAC_CTX can be copied using memcpy().
7433 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7435 *) Add the possibility to control engines through control names but with
7436 arbitrary arguments instead of just a string.
7437 Change the key loaders to take a UI_METHOD instead of a callback
7438 function pointer. NOTE: this breaks binary compatibility with earlier
7439 versions of OpenSSL [engine].
7440 Adapt the nCipher code for these new conditions and add a card insertion
7444 *) Enhance the general user interface with mechanisms to better support
7445 dialog box interfaces, application-defined prompts, the possibility
7446 to use defaults (for example default passwords from somewhere else)
7447 and interrupts/cancellations.
7450 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7451 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7454 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7455 tidy up some unnecessarily weird code in 'sk_new()').
7456 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7458 *) Change the key loading routines for ENGINEs to use the same kind
7459 callback (pem_password_cb) as all other routines that need this
7463 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
7464 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
7465 than this minimum value is recommended.
7468 *) New random seeder for OpenVMS, using the system process statistics
7469 that are easily reachable.
7472 *) Windows apparently can't transparently handle global
7473 variables defined in DLLs. Initialisations such as:
7475 const ASN1_ITEM *it = &ASN1_INTEGER_it;
7477 won't compile. This is used by the any applications that need to
7478 declare their own ASN1 modules. This was fixed by adding the option
7479 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
7480 needed for static libraries under Win32.
7483 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
7484 setting of purpose and trust fields. New X509_STORE trust and
7485 purpose functions and tidy up setting in other SSL functions.
7488 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
7489 structure. These are inherited by X509_STORE_CTX when it is
7490 initialised. This allows various defaults to be set in the
7491 X509_STORE structure (such as flags for CRL checking and custom
7492 purpose or trust settings) for functions which only use X509_STORE_CTX
7493 internally such as S/MIME.
7495 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
7496 trust settings if they are not set in X509_STORE. This allows X509_STORE
7497 purposes and trust (in S/MIME for example) to override any set by default.
7499 Add command line options for CRL checking to smime, s_client and s_server
7503 *) Initial CRL based revocation checking. If the CRL checking flag(s)
7504 are set then the CRL is looked up in the X509_STORE structure and
7505 its validity and signature checked, then if the certificate is found
7506 in the CRL the verify fails with a revoked error.
7508 Various new CRL related callbacks added to X509_STORE_CTX structure.
7510 Command line options added to 'verify' application to support this.
7512 This needs some additional work, such as being able to handle multiple
7513 CRLs with different times, extension based lookup (rather than just
7514 by subject name) and ultimately more complete V2 CRL extension
7518 *) Add a general user interface API (crypto/ui/). This is designed
7519 to replace things like des_read_password and friends (backward
7520 compatibility functions using this new API are provided).
7521 The purpose is to remove prompting functions from the DES code
7522 section as well as provide for prompting through dialog boxes in
7523 a window system and the like.
7526 *) Add "ex_data" support to ENGINE so implementations can add state at a
7527 per-structure level rather than having to store it globally.
7530 *) Make it possible for ENGINE structures to be copied when retrieved by
7531 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
7532 This causes the "original" ENGINE structure to act like a template,
7533 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
7534 operational state can be localised to each ENGINE structure, despite the
7535 fact they all share the same "methods". New ENGINE structures returned in
7536 this case have no functional references and the return value is the single
7537 structural reference. This matches the single structural reference returned
7538 by ENGINE_by_id() normally, when it is incremented on the pre-existing
7542 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
7543 needs to match any other type at all we need to manually clear the
7547 *) Changes to the "openssl engine" utility to include;
7548 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
7549 about an ENGINE's available control commands.
7550 - executing control commands from command line arguments using the
7551 '-pre' and '-post' switches. '-post' is only used if '-t' is
7552 specified and the ENGINE is successfully initialised. The syntax for
7553 the individual commands are colon-separated, for example;
7554 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
7557 *) New dynamic control command support for ENGINEs. ENGINEs can now
7558 declare their own commands (numbers), names (strings), descriptions,
7559 and input types for run-time discovery by calling applications. A
7560 subset of these commands are implicitly classed as "executable"
7561 depending on their input type, and only these can be invoked through
7562 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
7563 can be based on user input, config files, etc). The distinction is
7564 that "executable" commands cannot return anything other than a boolean
7565 result and can only support numeric or string input, whereas some
7566 discoverable commands may only be for direct use through
7567 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
7568 pointers, or other custom uses. The "executable" commands are to
7569 support parameterisations of ENGINE behaviour that can be
7570 unambiguously defined by ENGINEs and used consistently across any
7571 OpenSSL-based application. Commands have been added to all the
7572 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
7573 control over shared-library paths without source code alterations.
7576 *) Changed all ENGINE implementations to dynamically allocate their
7577 ENGINEs rather than declaring them statically. Apart from this being
7578 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
7579 this also allows the implementations to compile without using the
7580 internal engine_int.h header.
7583 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
7584 'const' value. Any code that should be able to modify a RAND_METHOD
7585 should already have non-const pointers to it (ie. they should only
7586 modify their own ones).
7589 *) Made a variety of little tweaks to the ENGINE code.
7590 - "atalla" and "ubsec" string definitions were moved from header files
7591 to C code. "nuron" string definitions were placed in variables
7592 rather than hard-coded - allowing parameterisation of these values
7593 later on via ctrl() commands.
7594 - Removed unused "#if 0"'d code.
7595 - Fixed engine list iteration code so it uses ENGINE_free() to release
7596 structural references.
7597 - Constified the RAND_METHOD element of ENGINE structures.
7598 - Constified various get/set functions as appropriate and added
7599 missing functions (including a catch-all ENGINE_cpy that duplicates
7600 all ENGINE values onto a new ENGINE except reference counts/state).
7601 - Removed NULL parameter checks in get/set functions. Setting a method
7602 or function to NULL is a way of cancelling out a previously set
7603 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7604 and doesn't justify the extra error symbols and code.
7605 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7606 flags from engine_int.h to engine.h.
7607 - Changed prototypes for ENGINE handler functions (init(), finish(),
7608 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7611 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7612 to the algorithm using long division. The binary algorithm can be
7613 used only if the modulus is odd. On 32-bit systems, it is faster
7614 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7615 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7616 up to 450 bits. In 64-bit environments, the binary algorithm
7617 appears to be advantageous for much longer moduli; here we use it
7618 for moduli up to 2048 bits.
7621 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7622 could not support the combine flag in choice fields.
7625 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
7626 extensions from a certificate request to the certificate.
7629 *) Allow multiple 'certopt' and 'nameopt' options to be separated
7630 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
7631 file: this allows the display of the certificate about to be
7632 signed to be customised, to allow certain fields to be included
7633 or excluded and extension details. The old system didn't display
7634 multicharacter strings properly, omitted fields not in the policy
7635 and couldn't display additional details such as extensions.
7638 *) Function EC_POINTs_mul for multiple scalar multiplication
7639 of an arbitrary number of elliptic curve points
7640 \sum scalars[i]*points[i],
7641 optionally including the generator defined for the EC_GROUP:
7642 scalar*generator + \sum scalars[i]*points[i].
7644 EC_POINT_mul is a simple wrapper function for the typical case
7645 that the point list has just one item (besides the optional
7649 *) First EC_METHODs for curves over GF(p):
7651 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
7652 operations and provides various method functions that can also
7653 operate with faster implementations of modular arithmetic.
7655 EC_GFp_mont_method() reuses most functions that are part of
7656 EC_GFp_simple_method, but uses Montgomery arithmetic.
7658 [Bodo Moeller; point addition and point doubling
7659 implementation directly derived from source code provided by
7660 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
7662 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
7663 crypto/ec/ec_lib.c):
7665 Curves are EC_GROUP objects (with an optional group generator)
7666 based on EC_METHODs that are built into the library.
7668 Points are EC_POINT objects based on EC_GROUP objects.
7670 Most of the framework would be able to handle curves over arbitrary
7671 finite fields, but as there are no obvious types for fields other
7672 than GF(p), some functions are limited to that for now.
7675 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
7676 that the file contains a complete HTTP response.
7679 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
7680 change the def and num file printf format specifier from "%-40sXXX"
7681 to "%-39s XXX". The latter will always guarantee a space after the
7682 field while the former will cause them to run together if the field
7683 is 40 of more characters long.
7686 *) Constify the cipher and digest 'method' functions and structures
7687 and modify related functions to take constant EVP_MD and EVP_CIPHER
7691 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
7692 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
7695 *) Modify EVP_Digest*() routines so they now return values. Although the
7696 internal software routines can never fail additional hardware versions
7700 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
7702 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
7703 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
7706 ERR_R_NESTED_ASN1_ERROR
7708 ERR_R_MISSING_ASN1_EOS
7709 were 4 .. 9, conflicting with
7710 ERR_LIB_RSA (= ERR_R_RSA_LIB)
7712 ERR_LIB_PEM (= ERR_R_PEM_LIB).
7713 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
7715 Add new error code 'ERR_R_INTERNAL_ERROR'.
7718 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
7722 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
7723 sets the subject name for a new request or supersedes the
7724 subject name in a given request. Formats that can be parsed are
7725 'CN=Some Name, OU=myOU, C=IT'
7727 'CN=Some Name/OU=myOU/C=IT'.
7729 Add options '-batch' and '-verbose' to 'openssl req'.
7730 [Massimiliano Pala <madwolf@hackmasters.net>]
7732 *) Introduce the possibility to access global variables through
7733 functions on platform were that's the best way to handle exporting
7734 global variables in shared libraries. To enable this functionality,
7735 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
7736 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
7737 is normally done by Configure or something similar).
7739 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
7740 in the source file (foo.c) like this:
7742 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
7743 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
7745 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
7746 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
7748 OPENSSL_DECLARE_GLOBAL(int,foo);
7749 #define foo OPENSSL_GLOBAL_REF(foo)
7750 OPENSSL_DECLARE_GLOBAL(double,bar);
7751 #define bar OPENSSL_GLOBAL_REF(bar)
7753 The #defines are very important, and therefore so is including the
7754 header file everywhere where the defined globals are used.
7756 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
7757 of ASN.1 items, but that structure is a bit different.
7759 The largest change is in util/mkdef.pl which has been enhanced with
7760 better and easier to understand logic to choose which symbols should
7761 go into the Windows .def files as well as a number of fixes and code
7762 cleanup (among others, algorithm keywords are now sorted
7763 lexicographically to avoid constant rewrites).
7766 *) In BN_div() keep a copy of the sign of 'num' before writing the
7767 result to 'rm' because if rm==num the value will be overwritten
7768 and produce the wrong result if 'num' is negative: this caused
7769 problems with BN_mod() and BN_nnmod().
7772 *) Function OCSP_request_verify(). This checks the signature on an
7773 OCSP request and verifies the signer certificate. The signer
7774 certificate is just checked for a generic purpose and OCSP request
7778 *) Add OCSP_check_validity() function to check the validity of OCSP
7779 responses. OCSP responses are prepared in real time and may only
7780 be a few seconds old. Simply checking that the current time lies
7781 between thisUpdate and nextUpdate max reject otherwise valid responses
7782 caused by either OCSP responder or client clock inaccuracy. Instead
7783 we allow thisUpdate and nextUpdate to fall within a certain period of
7784 the current time. The age of the response can also optionally be
7785 checked. Two new options -validity_period and -status_age added to
7789 *) If signature or public key algorithm is unrecognized print out its
7790 OID rather that just UNKNOWN.
7793 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
7794 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
7795 ID to be generated from the issuer certificate alone which can then be
7796 passed to OCSP_id_issuer_cmp().
7799 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
7800 ASN1 modules to export functions returning ASN1_ITEM pointers
7801 instead of the ASN1_ITEM structures themselves. This adds several
7802 new macros which allow the underlying ASN1 function/structure to
7803 be accessed transparently. As a result code should not use ASN1_ITEM
7804 references directly (such as &X509_it) but instead use the relevant
7805 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
7806 use of the new ASN1 code on platforms where exporting structures
7807 is problematical (for example in shared libraries) but exporting
7808 functions returning pointers to structures is not.
7811 *) Add support for overriding the generation of SSL/TLS session IDs.
7812 These callbacks can be registered either in an SSL_CTX or per SSL.
7813 The purpose of this is to allow applications to control, if they wish,
7814 the arbitrary values chosen for use as session IDs, particularly as it
7815 can be useful for session caching in multiple-server environments. A
7816 command-line switch for testing this (and any client code that wishes
7817 to use such a feature) has been added to "s_server".
7818 [Geoff Thorpe, Lutz Jaenicke]
7820 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
7821 of the form '#if defined(...) || defined(...) || ...' and
7822 '#if !defined(...) && !defined(...) && ...'. This also avoids
7823 the growing number of special cases it was previously handling.
7826 *) Make all configuration macros available for application by making
7827 sure they are available in opensslconf.h, by giving them names starting
7828 with "OPENSSL_" to avoid conflicts with other packages and by making
7829 sure e_os2.h will cover all platform-specific cases together with
7831 Additionally, it is now possible to define configuration/platform-
7832 specific names (called "system identities"). In the C code, these
7833 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
7834 macro with the name beginning with "OPENSSL_SYS_", which is determined
7835 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
7839 *) New option -set_serial to 'req' and 'x509' this allows the serial
7840 number to use to be specified on the command line. Previously self
7841 signed certificates were hard coded with serial number 0 and the
7842 CA options of 'x509' had to use a serial number in a file which was
7846 *) New options to 'ca' utility to support V2 CRL entry extensions.
7847 Currently CRL reason, invalidity date and hold instruction are
7848 supported. Add new CRL extensions to V3 code and some new objects.
7851 *) New function EVP_CIPHER_CTX_set_padding() this is used to
7852 disable standard block padding (aka PKCS#5 padding) in the EVP
7853 API, which was previously mandatory. This means that the data is
7854 not padded in any way and so the total length much be a multiple
7855 of the block size, otherwise an error occurs.
7858 *) Initial (incomplete) OCSP SSL support.
7861 *) New function OCSP_parse_url(). This splits up a URL into its host,
7862 port and path components: primarily to parse OCSP URLs. New -url
7863 option to ocsp utility.
7866 *) New nonce behavior. The return value of OCSP_check_nonce() now
7867 reflects the various checks performed. Applications can decide
7868 whether to tolerate certain situations such as an absent nonce
7869 in a response when one was present in a request: the ocsp application
7870 just prints out a warning. New function OCSP_add1_basic_nonce()
7871 this is to allow responders to include a nonce in a response even if
7872 the request is nonce-less.
7875 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
7876 skipped when using openssl x509 multiple times on a single input file,
7877 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
7880 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
7881 set string type: to handle setting ASN1_TIME structures. Fix ca
7882 utility to correctly initialize revocation date of CRLs.
7885 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
7886 the clients preferred ciphersuites and rather use its own preferences.
7887 Should help to work around M$ SGC (Server Gated Cryptography) bug in
7888 Internet Explorer by ensuring unchanged hash method during stepup.
7889 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
7892 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
7893 to aes and add a new 'exist' option to print out symbols that don't
7897 *) Additional options to ocsp utility to allow flags to be set and
7898 additional certificates supplied.
7901 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
7902 OCSP client a number of certificate to only verify the response
7906 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
7907 handle the new API. Currently only ECB, CBC modes supported. Add new
7910 Add TLS AES ciphersuites as described in RFC3268, "Advanced
7911 Encryption Standard (AES) Ciphersuites for Transport Layer
7912 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
7913 not enabled by default and were not part of the "ALL" ciphersuite
7914 alias because they were not yet official; they could be
7915 explicitly requested by specifying the "AESdraft" ciphersuite
7916 group alias. In the final release of OpenSSL 0.9.7, the group
7917 alias is called "AES" and is part of "ALL".)
7918 [Ben Laurie, Steve Henson, Bodo Moeller]
7920 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
7921 request to response.
7924 *) Functions for OCSP responders. OCSP_request_onereq_count(),
7925 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
7926 extract information from a certificate request. OCSP_response_create()
7927 creates a response and optionally adds a basic response structure.
7928 OCSP_basic_add1_status() adds a complete single response to a basic
7929 response and returns the OCSP_SINGLERESP structure just added (to allow
7930 extensions to be included for example). OCSP_basic_add1_cert() adds a
7931 certificate to a basic response and OCSP_basic_sign() signs a basic
7932 response with various flags. New helper functions ASN1_TIME_check()
7933 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
7934 (converts ASN1_TIME to GeneralizedTime).
7937 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
7938 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
7939 structure from a certificate. X509_pubkey_digest() digests the public_key
7940 contents: this is used in various key identifiers.
7943 *) Make sk_sort() tolerate a NULL argument.
7944 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
7946 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
7947 passed by the function are trusted implicitly. If any of them signed the
7948 response then it is assumed to be valid and is not verified.
7951 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
7952 to data. This was previously part of the PKCS7 ASN1 code. This
7953 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
7954 [Steve Henson, reported by Kenneth R. Robinette
7955 <support@securenetterm.com>]
7957 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
7958 routines: without these tracing memory leaks is very painful.
7959 Fix leaks in PKCS12 and PKCS7 routines.
7962 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
7963 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
7964 effectively meant GeneralizedTime would never be used. Now it
7965 is initialised to -1 but X509_time_adj() now has to check the value
7966 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
7967 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
7968 [Steve Henson, reported by Kenneth R. Robinette
7969 <support@securenetterm.com>]
7971 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
7972 result in a zero length in the ASN1_INTEGER structure which was
7973 not consistent with the structure when d2i_ASN1_INTEGER() was used
7974 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
7975 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
7976 where it did not print out a minus for negative ASN1_INTEGER.
7979 *) Add summary printout to ocsp utility. The various functions which
7980 convert status values to strings have been renamed to:
7981 OCSP_response_status_str(), OCSP_cert_status_str() and
7982 OCSP_crl_reason_str() and are no longer static. New options
7983 to verify nonce values and to disable verification. OCSP response
7984 printout format cleaned up.
7987 *) Add additional OCSP certificate checks. These are those specified
7988 in RFC2560. This consists of two separate checks: the CA of the
7989 certificate being checked must either be the OCSP signer certificate
7990 or the issuer of the OCSP signer certificate. In the latter case the
7991 OCSP signer certificate must contain the OCSP signing extended key
7992 usage. This check is performed by attempting to match the OCSP
7993 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
7994 in the OCSP_CERTID structures of the response.
7997 *) Initial OCSP certificate verification added to OCSP_basic_verify()
7998 and related routines. This uses the standard OpenSSL certificate
7999 verify routines to perform initial checks (just CA validity) and
8000 to obtain the certificate chain. Then additional checks will be
8001 performed on the chain. Currently the root CA is checked to see
8002 if it is explicitly trusted for OCSP signing. This is used to set
8003 a root CA as a global signing root: that is any certificate that
8004 chains to that CA is an acceptable OCSP signing certificate.
8007 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
8008 extensions from a separate configuration file.
8009 As when reading extensions from the main configuration file,
8010 the '-extensions ...' option may be used for specifying the
8012 [Massimiliano Pala <madwolf@comune.modena.it>]
8014 *) New OCSP utility. Allows OCSP requests to be generated or
8015 read. The request can be sent to a responder and the output
8016 parsed, outputed or printed in text form. Not complete yet:
8017 still needs to check the OCSP response validity.
8020 *) New subcommands for 'openssl ca':
8021 'openssl ca -status <serial>' prints the status of the cert with
8022 the given serial number (according to the index file).
8023 'openssl ca -updatedb' updates the expiry status of certificates
8025 [Massimiliano Pala <madwolf@comune.modena.it>]
8027 *) New '-newreq-nodes' command option to CA.pl. This is like
8028 '-newreq', but calls 'openssl req' with the '-nodes' option
8029 so that the resulting key is not encrypted.
8030 [Damien Miller <djm@mindrot.org>]
8032 *) New configuration for the GNU Hurd.
8033 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
8035 *) Initial code to implement OCSP basic response verify. This
8036 is currently incomplete. Currently just finds the signer's
8037 certificate and verifies the signature on the response.
8040 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
8041 value of OPENSSLDIR. This is available via the new '-d' option
8042 to 'openssl version', and is also included in 'openssl version -a'.
8045 *) Allowing defining memory allocation callbacks that will be given
8046 file name and line number information in additional arguments
8047 (a const char* and an int). The basic functionality remains, as
8048 well as the original possibility to just replace malloc(),
8049 realloc() and free() by functions that do not know about these
8050 additional arguments. To register and find out the current
8051 settings for extended allocation functions, the following
8052 functions are provided:
8054 CRYPTO_set_mem_ex_functions
8055 CRYPTO_set_locked_mem_ex_functions
8056 CRYPTO_get_mem_ex_functions
8057 CRYPTO_get_locked_mem_ex_functions
8059 These work the same way as CRYPTO_set_mem_functions and friends.
8060 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
8061 extended allocation function is enabled.
8062 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
8063 a conventional allocation function is enabled.
8064 [Richard Levitte, Bodo Moeller]
8066 *) Finish off removing the remaining LHASH function pointer casts.
8067 There should no longer be any prototype-casting required when using
8068 the LHASH abstraction, and any casts that remain are "bugs". See
8069 the callback types and macros at the head of lhash.h for details
8070 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
8073 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
8074 If /dev/[u]random devices are not available or do not return enough
8075 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
8077 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
8078 /etc/entropy will be queried once each in this sequence, querying stops
8079 when enough entropy was collected without querying more sockets.
8082 *) Change the Unix RAND_poll() variant to be able to poll several
8083 random devices, as specified by DEVRANDOM, until a sufficient amount
8084 of data has been collected. We spend at most 10 ms on each file
8085 (select timeout) and read in non-blocking mode. DEVRANDOM now
8086 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
8087 (previously it was just the string "/dev/urandom"), so on typical
8088 platforms the 10 ms delay will never occur.
8089 Also separate out the Unix variant to its own file, rand_unix.c.
8090 For VMS, there's a currently-empty rand_vms.c.
8093 *) Move OCSP client related routines to ocsp_cl.c. These
8094 provide utility functions which an application needing
8095 to issue a request to an OCSP responder and analyse the
8096 response will typically need: as opposed to those which an
8097 OCSP responder itself would need which will be added later.
8099 OCSP_request_sign() signs an OCSP request with an API similar
8100 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
8101 response. OCSP_response_get1_basic() extracts basic response
8102 from response. OCSP_resp_find_status(): finds and extracts status
8103 information from an OCSP_CERTID structure (which will be created
8104 when the request structure is built). These are built from lower
8105 level functions which work on OCSP_SINGLERESP structures but
8106 won't normally be used unless the application wishes to examine
8107 extensions in the OCSP response for example.
8109 Replace nonce routines with a pair of functions.
8110 OCSP_request_add1_nonce() adds a nonce value and optionally
8111 generates a random value. OCSP_check_nonce() checks the
8112 validity of the nonce in an OCSP response.
8115 *) Change function OCSP_request_add() to OCSP_request_add0_id().
8116 This doesn't copy the supplied OCSP_CERTID and avoids the
8117 need to free up the newly created id. Change return type
8118 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
8119 This can then be used to add extensions to the request.
8120 Deleted OCSP_request_new(), since most of its functionality
8121 is now in OCSP_REQUEST_new() (and the case insensitive name
8122 clash) apart from the ability to set the request name which
8123 will be added elsewhere.
8126 *) Update OCSP API. Remove obsolete extensions argument from
8127 various functions. Extensions are now handled using the new
8128 OCSP extension code. New simple OCSP HTTP function which
8129 can be used to send requests and parse the response.
8132 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
8133 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
8134 uses the special reorder version of SET OF to sort the attributes
8135 and reorder them to match the encoded order. This resolves a long
8136 standing problem: a verify on a PKCS7 structure just after signing
8137 it used to fail because the attribute order did not match the
8138 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
8139 it uses the received order. This is necessary to tolerate some broken
8140 software that does not order SET OF. This is handled by encoding
8141 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
8142 to produce the required SET OF.
8145 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
8146 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
8147 files to get correct declarations of the ASN.1 item variables.
8150 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
8151 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
8152 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
8153 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
8154 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
8155 ASN1_ITEM and no wrapper functions.
8158 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
8159 replace the old function pointer based I/O routines. Change most of
8160 the *_d2i_bio() and *_d2i_fp() functions to use these.
8163 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
8164 lines, recognize more "algorithms" that can be deselected, and make
8165 it complain about algorithm deselection that isn't recognised.
8168 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
8169 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
8170 to use new functions. Add NO_ASN1_OLD which can be set to remove
8171 some old style ASN1 functions: this can be used to determine if old
8172 code will still work when these eventually go away.
8175 *) New extension functions for OCSP structures, these follow the
8176 same conventions as certificates and CRLs.
8179 *) New function X509V3_add1_i2d(). This automatically encodes and
8180 adds an extension. Its behaviour can be customised with various
8181 flags to append, replace or delete. Various wrappers added for
8182 certificates and CRLs.
8185 *) Fix to avoid calling the underlying ASN1 print routine when
8186 an extension cannot be parsed. Correct a typo in the
8187 OCSP_SERVICELOC extension. Tidy up print OCSP format.
8190 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
8191 entries for variables.
8194 *) Add functionality to apps/openssl.c for detecting locking
8195 problems: As the program is single-threaded, all we have
8196 to do is register a locking callback using an array for
8197 storing which locks are currently held by the program.
8200 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
8201 SSL_get_ex_data_X509_STORE_idx(), which is used in
8202 ssl_verify_cert_chain() and thus can be called at any time
8203 during TLS/SSL handshakes so that thread-safety is essential.
8204 Unfortunately, the ex_data design is not at all suited
8205 for multi-threaded use, so it probably should be abolished.
8208 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
8209 [Broadcom, tweaked and integrated by Geoff Thorpe]
8211 *) Move common extension printing code to new function
8212 X509V3_print_extensions(). Reorganise OCSP print routines and
8213 implement some needed OCSP ASN1 functions. Add OCSP extensions.
8216 *) New function X509_signature_print() to remove duplication in some
8220 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
8221 set (this was treated exactly the same as SET OF previously). This
8222 is used to reorder the STACK representing the structure to match the
8223 encoding. This will be used to get round a problem where a PKCS7
8224 structure which was signed could not be verified because the STACK
8225 order did not reflect the encoded order.
8228 *) Reimplement the OCSP ASN1 module using the new code.
8231 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
8232 for its ASN1 operations. The old style function pointers still exist
8233 for now but they will eventually go away.
8236 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
8237 completely replaces the old ASN1 functionality with a table driven
8238 encoder and decoder which interprets an ASN1_ITEM structure describing
8239 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
8240 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
8241 has also been converted to the new form.
8244 *) Change BN_mod_exp_recp so that negative moduli are tolerated
8245 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
8246 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
8247 for negative moduli.
8250 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
8251 of not touching the result's sign bit.
8254 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
8258 *) Changed the LHASH code to use prototypes for callbacks, and created
8259 macros to declare and implement thin (optionally static) functions
8260 that provide type-safety and avoid function pointer casting for the
8261 type-specific callbacks.
8264 *) Added Kerberos Cipher Suites to be used with TLS, as written in
8266 [Veers Staats <staatsvr@asc.hpc.mil>,
8267 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
8269 *) Reformat the FAQ so the different questions and answers can be divided
8270 in sections depending on the subject.
8273 *) Have the zlib compression code load ZLIB.DLL dynamically under
8277 *) New function BN_mod_sqrt for computing square roots modulo a prime
8278 (using the probabilistic Tonelli-Shanks algorithm unless
8279 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
8280 be handled deterministically).
8281 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8283 *) Make BN_mod_inverse faster by explicitly handling small quotients
8284 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
8285 512 bits], about 30% for larger ones [1024 or 2048 bits].)
8288 *) New function BN_kronecker.
8291 *) Fix BN_gcd so that it works on negative inputs; the result is
8292 positive unless both parameters are zero.
8293 Previously something reasonably close to an infinite loop was
8294 possible because numbers could be growing instead of shrinking
8295 in the implementation of Euclid's algorithm.
8298 *) Fix BN_is_word() and BN_is_one() macros to take into account the
8299 sign of the number in question.
8301 Fix BN_is_word(a,w) to work correctly for w == 0.
8303 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
8304 because its test if the absolute value of 'a' equals 'w'.
8305 Note that BN_abs_is_word does *not* handle w == 0 reliably;
8306 it exists mostly for use in the implementations of BN_is_zero(),
8307 BN_is_one(), and BN_is_word().
8310 *) New function BN_swap.
8313 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
8314 the exponentiation functions are more likely to produce reasonable
8315 results on negative inputs.
8318 *) Change BN_mod_mul so that the result is always non-negative.
8319 Previously, it could be negative if one of the factors was negative;
8320 I don't think anyone really wanted that behaviour.
8323 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
8324 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
8325 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
8326 and add new functions:
8335 BN_mod_lshift1_quick
8339 These functions always generate non-negative results.
8341 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
8342 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
8344 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
8345 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
8346 be reduced modulo m.
8347 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
8350 The following entry accidentally appeared in the CHANGES file
8351 distributed with OpenSSL 0.9.7. The modifications described in
8352 it do *not* apply to OpenSSL 0.9.7.
8354 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
8355 was actually never needed) and in BN_mul(). The removal in BN_mul()
8356 required a small change in bn_mul_part_recursive() and the addition
8357 of the functions bn_cmp_part_words(), bn_sub_part_words() and
8358 bn_add_part_words(), which do the same thing as bn_cmp_words(),
8359 bn_sub_words() and bn_add_words() except they take arrays with
8364 *) In 'openssl passwd', verify passwords read from the terminal
8365 unless the '-salt' option is used (which usually means that
8366 verification would just waste user's time since the resulting
8367 hash is going to be compared with some given password hash)
8368 or the new '-noverify' option is used.
8370 This is an incompatible change, but it does not affect
8371 non-interactive use of 'openssl passwd' (passwords on the command
8372 line, '-stdin' option, '-in ...' option) and thus should not
8376 *) Remove all references to RSAref, since there's no more need for it.
8379 *) Make DSO load along a path given through an environment variable
8380 (SHLIB_PATH) with shl_load().
8383 *) Constify the ENGINE code as a result of BIGNUM constification.
8384 Also constify the RSA code and most things related to it. In a
8385 few places, most notable in the depth of the ASN.1 code, ugly
8386 casts back to non-const were required (to be solved at a later
8390 *) Make it so the openssl application has all engines loaded by default.
8393 *) Constify the BIGNUM routines a little more.
8396 *) Add the following functions:
8398 ENGINE_load_cswift()
8400 ENGINE_load_atalla()
8402 ENGINE_load_builtin_engines()
8404 That way, an application can itself choose if external engines that
8405 are built-in in OpenSSL shall ever be used or not. The benefit is
8406 that applications won't have to be linked with libdl or other dso
8407 libraries unless it's really needed.
8409 Changed 'openssl engine' to load all engines on demand.
8410 Changed the engine header files to avoid the duplication of some
8411 declarations (they differed!).
8414 *) 'openssl engine' can now list capabilities.
8417 *) Better error reporting in 'openssl engine'.
8420 *) Never call load_dh_param(NULL) in s_server.
8423 *) Add engine application. It can currently list engines by name and
8424 identity, and test if they are actually available.
8427 *) Improve RPM specification file by forcing symbolic linking and making
8428 sure the installed documentation is also owned by root.root.
8429 [Damien Miller <djm@mindrot.org>]
8431 *) Give the OpenSSL applications more possibilities to make use of
8432 keys (public as well as private) handled by engines.
8435 *) Add OCSP code that comes from CertCo.
8438 *) Add VMS support for the Rijndael code.
8441 *) Added untested support for Nuron crypto accelerator.
8444 *) Add support for external cryptographic devices. This code was
8445 previously distributed separately as the "engine" branch.
8446 [Geoff Thorpe, Richard Levitte]
8448 *) Rework the filename-translation in the DSO code. It is now possible to
8449 have far greater control over how a "name" is turned into a filename
8450 depending on the operating environment and any oddities about the
8451 different shared library filenames on each system.
8454 *) Support threads on FreeBSD-elf in Configure.
8457 *) Fix for SHA1 assembly problem with MASM: it produces
8458 warnings about corrupt line number information when assembling
8459 with debugging information. This is caused by the overlapping
8461 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
8464 NCONF_get_number() has no error checking at all. As a replacement,
8465 NCONF_get_number_e() is defined (_e for "error checking") and is
8466 promoted strongly. The old NCONF_get_number is kept around for
8467 binary backward compatibility.
8468 Make it possible for methods to load from something other than a BIO,
8469 by providing a function pointer that is given a name instead of a BIO.
8470 For example, this could be used to load configuration data from an
8474 *) Fix for non blocking accept BIOs. Added new I/O special reason
8475 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
8476 with non blocking I/O was not possible because no retry code was
8477 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
8481 *) Added the beginnings of Rijndael support.
8484 *) Fix for bug in DirectoryString mask setting. Add support for
8485 X509_NAME_print_ex() in 'req' and X509_print_ex() function
8486 to allow certificate printing to more controllable, additional
8487 'certopt' option to 'x509' to allow new printing options to be
8491 *) Clean old EAY MD5 hack from e_os.h.
8494 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
8496 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
8497 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
8498 [Joe Orton, Steve Henson]
8500 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
8502 *) Fix additional bug revealed by the NISCC test suite:
8504 Stop bug triggering large recursion when presented with
8505 certain ASN.1 tags (CVE-2003-0851)
8508 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
8510 *) Fix various bugs revealed by running the NISCC test suite:
8512 Stop out of bounds reads in the ASN1 code when presented with
8513 invalid tags (CVE-2003-0543 and CVE-2003-0544).
8515 If verify callback ignores invalid public key errors don't try to check
8516 certificate signature with the NULL public key.
8520 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
8521 if the server requested one: as stated in TLS 1.0 and SSL 3.0
8525 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
8526 extra data after the compression methods not only for TLS 1.0
8527 but also for SSL 3.0 (as required by the specification).
8528 [Bodo Moeller; problem pointed out by Matthias Loepfe]
8530 *) Change X509_certificate_type() to mark the key as exported/exportable
8531 when it's 512 *bits* long, not 512 bytes.
8534 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
8536 *) Countermeasure against the Klima-Pokorny-Rosa extension of
8537 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
8538 a protocol version number mismatch like a decryption error
8539 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
8542 *) Turn on RSA blinding by default in the default implementation
8543 to avoid a timing attack. Applications that don't want it can call
8544 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
8545 They would be ill-advised to do so in most cases.
8546 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
8548 *) Change RSA blinding code so that it works when the PRNG is not
8549 seeded (in this case, the secret RSA exponent is abused as
8550 an unpredictable seed -- if it is not unpredictable, there
8551 is no point in blinding anyway). Make RSA blinding thread-safe
8552 by remembering the creator's thread ID in rsa->blinding and
8553 having all other threads use local one-time blinding factors
8554 (this requires more computation than sharing rsa->blinding, but
8555 avoids excessive locking; and if an RSA object is not shared
8556 between threads, blinding will still be very fast).
8559 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
8561 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
8562 via timing by performing a MAC computation even if incorrect
8563 block cipher padding has been found. This is a countermeasure
8564 against active attacks where the attacker has to distinguish
8565 between bad padding and a MAC verification error. (CVE-2003-0078)
8567 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
8568 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
8569 Martin Vuagnoux (EPFL, Ilion)]
8571 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
8573 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
8574 memory from it's contents. This is done with a counter that will
8575 place alternating values in each byte. This can be used to solve
8576 two issues: 1) the removal of calls to memset() by highly optimizing
8577 compilers, and 2) cleansing with other values than 0, since those can
8578 be read through on certain media, for example a swap space on disk.
8581 *) Bugfix: client side session caching did not work with external caching,
8582 because the session->cipher setting was not restored when reloading
8583 from the external cache. This problem was masked, when
8584 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
8585 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
8588 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
8589 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
8590 [Zeev Lieber <zeev-l@yahoo.com>]
8592 *) Undo an undocumented change introduced in 0.9.6e which caused
8593 repeated calls to OpenSSL_add_all_ciphers() and
8594 OpenSSL_add_all_digests() to be ignored, even after calling
8598 *) Change the default configuration reader to deal with last line not
8599 being properly terminated.
8602 *) Change X509_NAME_cmp() so it applies the special rules on handling
8603 DN values that are of type PrintableString, as well as RDNs of type
8604 emailAddress where the value has the type ia5String.
8605 [stefank@valicert.com via Richard Levitte]
8607 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8608 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8609 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8610 the bitwise-OR of the two for use by the majority of applications
8611 wanting this behaviour, and update the docs. The documented
8612 behaviour and actual behaviour were inconsistent and had been
8613 changing anyway, so this is more a bug-fix than a behavioural
8615 [Geoff Thorpe, diagnosed by Nadav Har'El]
8617 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8618 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8621 *) Fix initialization code race conditions in
8622 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
8623 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
8624 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
8625 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
8626 ssl2_get_cipher_by_char(),
8627 ssl3_get_cipher_by_char().
8628 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
8630 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
8631 the cached sessions are flushed, as the remove_cb() might use ex_data
8632 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
8633 (see [openssl.org #212]).
8634 [Geoff Thorpe, Lutz Jaenicke]
8636 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
8637 length, instead of the encoding length to d2i_ASN1_OBJECT.
8640 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
8642 *) [In 0.9.6g-engine release:]
8643 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
8644 [Lynn Gazis <lgazis@rainbow.com>]
8646 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
8648 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
8649 and get fix the header length calculation.
8650 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
8651 Alon Kantor <alonk@checkpoint.com> (and others),
8654 *) Use proper error handling instead of 'assertions' in buffer
8655 overflow checks added in 0.9.6e. This prevents DoS (the
8656 assertions could call abort()).
8657 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
8659 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
8661 *) Add various sanity checks to asn1_get_length() to reject
8662 the ASN1 length bytes if they exceed sizeof(long), will appear
8663 negative or the content length exceeds the length of the
8665 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8667 *) Fix cipher selection routines: ciphers without encryption had no flags
8668 for the cipher strength set and where therefore not handled correctly
8669 by the selection routines (PR #130).
8672 *) Fix EVP_dsa_sha macro.
8676 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
8677 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
8678 that was added in OpenSSL 0.9.6d.
8680 As the countermeasure turned out to be incompatible with some
8681 broken SSL implementations, the new option is part of SSL_OP_ALL.
8682 SSL_OP_ALL is usually employed when compatibility with weird SSL
8683 implementations is desired (e.g. '-bugs' option to 's_client' and
8684 's_server'), so the new option is automatically set in many
8688 *) Changes in security patch:
8690 Changes marked "(CHATS)" were sponsored by the Defense Advanced
8691 Research Projects Agency (DARPA) and Air Force Research Laboratory,
8692 Air Force Materiel Command, USAF, under agreement number
8695 *) Add various sanity checks to asn1_get_length() to reject
8696 the ASN1 length bytes if they exceed sizeof(long), will appear
8697 negative or the content length exceeds the length of the
8698 supplied buffer. (CVE-2002-0659)
8699 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8701 *) Assertions for various potential buffer overflows, not known to
8703 [Ben Laurie (CHATS)]
8705 *) Various temporary buffers to hold ASCII versions of integers were
8706 too small for 64 bit platforms. (CVE-2002-0655)
8707 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
8709 *) Remote buffer overflow in SSL3 protocol - an attacker could
8710 supply an oversized session ID to a client. (CVE-2002-0656)
8711 [Ben Laurie (CHATS)]
8713 *) Remote buffer overflow in SSL2 protocol - an attacker could
8714 supply an oversized client master key. (CVE-2002-0656)
8715 [Ben Laurie (CHATS)]
8717 Changes between 0.9.6c and 0.9.6d [9 May 2002]
8719 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
8720 encoded as NULL) with id-dsa-with-sha1.
8721 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
8723 *) Check various X509_...() return values in apps/req.c.
8724 [Nils Larsch <nla@trustcenter.de>]
8726 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
8727 an end-of-file condition would erroneously be flagged, when the CRLF
8728 was just at the end of a processed block. The bug was discovered when
8729 processing data through a buffering memory BIO handing the data to a
8730 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
8731 <ptsekov@syntrex.com> and Nedelcho Stanev.
8734 *) Implement a countermeasure against a vulnerability recently found
8735 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
8736 before application data chunks to avoid the use of known IVs
8737 with data potentially chosen by the attacker.
8740 *) Fix length checks in ssl3_get_client_hello().
8743 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
8744 to prevent ssl3_read_internal() from incorrectly assuming that
8745 ssl3_read_bytes() found application data while handshake
8746 processing was enabled when in fact s->s3->in_read_app_data was
8747 merely automatically cleared during the initial handshake.
8748 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
8750 *) Fix object definitions for Private and Enterprise: they were not
8751 recognized in their shortname (=lowercase) representation. Extend
8752 obj_dat.pl to issue an error when using undefined keywords instead
8753 of silently ignoring the problem (Svenning Sorensen
8754 <sss@sss.dnsalias.net>).
8757 *) Fix DH_generate_parameters() so that it works for 'non-standard'
8758 generators, i.e. generators other than 2 and 5. (Previously, the
8759 code did not properly initialise the 'add' and 'rem' values to
8760 BN_generate_prime().)
8762 In the new general case, we do not insist that 'generator' is
8763 actually a primitive root: This requirement is rather pointless;
8764 a generator of the order-q subgroup is just as good, if not
8768 *) Map new X509 verification errors to alerts. Discovered and submitted by
8769 Tom Wu <tom@arcot.com>.
8772 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
8773 returning non-zero before the data has been completely received
8774 when using non-blocking I/O.
8775 [Bodo Moeller; problem pointed out by John Hughes]
8777 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
8778 [Ben Laurie, Lutz Jaenicke]
8780 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
8781 Yoram Zahavi <YoramZ@gilian.com>).
8784 *) Add information about CygWin 1.3 and on, and preserve proper
8785 configuration for the versions before that.
8786 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
8788 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
8789 check whether we deal with a copy of a session and do not delete from
8790 the cache in this case. Problem reported by "Izhar Shoshani Levi"
8791 <izhar@checkpoint.com>.
8794 *) Do not store session data into the internal session cache, if it
8795 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
8796 flag is set). Proposed by Aslam <aslam@funk.com>.
8799 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
8803 *) [In 0.9.6d-engine release:]
8804 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8805 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8807 *) Add the configuration target linux-s390x.
8808 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
8810 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
8811 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
8812 variable as an indication that a ClientHello message has been
8813 received. As the flag value will be lost between multiple
8814 invocations of ssl3_accept when using non-blocking I/O, the
8815 function may not be aware that a handshake has actually taken
8816 place, thus preventing a new session from being added to the
8819 To avoid this problem, we now set s->new_session to 2 instead of
8820 using a local variable.
8821 [Lutz Jaenicke, Bodo Moeller]
8823 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
8824 if the SSL_R_LENGTH_MISMATCH error is detected.
8825 [Geoff Thorpe, Bodo Moeller]
8827 *) New 'shared_ldflag' column in Configure platform table.
8830 *) Fix EVP_CIPHER_mode macro.
8831 ["Dan S. Camper" <dan@bti.net>]
8833 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
8834 type, we must throw them away by setting rr->length to 0.
8835 [D P Chang <dpc@qualys.com>]
8837 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
8839 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
8840 <Dominikus.Scherkl@biodata.com>. (The previous implementation
8841 worked incorrectly for those cases where range = 10..._2 and
8842 3*range is two bits longer than range.)
8845 *) Only add signing time to PKCS7 structures if it is not already
8849 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
8850 OBJ_ld_ce should be OBJ_id_ce.
8851 Also some ip-pda OIDs in crypto/objects/objects.txt were
8852 incorrect (cf. RFC 3039).
8853 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
8855 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
8856 returns early because it has nothing to do.
8857 [Andy Schneider <andy.schneider@bjss.co.uk>]
8859 *) [In 0.9.6c-engine release:]
8860 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
8861 [Andy Schneider <andy.schneider@bjss.co.uk>]
8863 *) [In 0.9.6c-engine release:]
8864 Add support for Cryptographic Appliance's keyserver technology.
8865 (Use engine 'keyclient')
8866 [Cryptographic Appliances and Geoff Thorpe]
8868 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
8869 is called via tools/c89.sh because arguments have to be
8870 rearranged (all '-L' options must appear before the first object
8872 [Richard Shapiro <rshapiro@abinitio.com>]
8874 *) [In 0.9.6c-engine release:]
8875 Add support for Broadcom crypto accelerator cards, backported
8877 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
8879 *) [In 0.9.6c-engine release:]
8880 Add support for SureWare crypto accelerator cards from
8881 Baltimore Technologies. (Use engine 'sureware')
8882 [Baltimore Technologies and Mark Cox]
8884 *) [In 0.9.6c-engine release:]
8885 Add support for crypto accelerator cards from Accelerated
8886 Encryption Processing, www.aep.ie. (Use engine 'aep')
8887 [AEP Inc. and Mark Cox]
8889 *) Add a configuration entry for gcc on UnixWare.
8890 [Gary Benson <gbenson@redhat.com>]
8892 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
8893 messages are stored in a single piece (fixed-length part and
8894 variable-length part combined) and fix various bugs found on the way.
8897 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
8898 instead. BIO_gethostbyname() does not know what timeouts are
8899 appropriate, so entries would stay in cache even when they have
8901 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
8903 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
8904 faced with a pathologically small ClientHello fragment that does
8905 not contain client_version: Instead of aborting with an error,
8906 simply choose the highest available protocol version (i.e.,
8907 TLS 1.0 unless it is disabled). In practice, ClientHello
8908 messages are never sent like this, but this change gives us
8909 strictly correct behaviour at least for TLS.
8912 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
8913 never resets s->method to s->ctx->method when called from within
8914 one of the SSL handshake functions.
8915 [Bodo Moeller; problem pointed out by Niko Baric]
8917 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
8918 (sent using the client's version number) if client_version is
8919 smaller than the protocol version in use. Also change
8920 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
8921 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
8922 the client will at least see that alert.
8925 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
8929 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
8930 client receives HelloRequest while in a handshake.
8931 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
8933 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
8934 should end in 'break', not 'goto end' which circumvents various
8935 cleanups done in state SSL_ST_OK. But session related stuff
8936 must be disabled for SSL_ST_OK in the case that we just sent a
8939 Also avoid some overhead by not calling ssl_init_wbio_buffer()
8940 before just sending a HelloRequest.
8941 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
8943 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
8944 reveal whether illegal block cipher padding was found or a MAC
8945 verification error occurred. (Neither SSLerr() codes nor alerts
8946 are directly visible to potential attackers, but the information
8947 may leak via logfiles.)
8949 Similar changes are not required for the SSL 2.0 implementation
8950 because the number of padding bytes is sent in clear for SSL 2.0,
8951 and the extra bytes are just ignored. However ssl/s2_pkt.c
8952 failed to verify that the purported number of padding bytes is in
8956 *) Add OpenUNIX-8 support including shared libraries
8957 (Boyd Lynn Gerber <gerberb@zenez.com>).
8960 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
8961 'wristwatch attack' using huge encoding parameters (cf.
8962 James H. Manger's CRYPTO 2001 paper). Note that the
8963 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
8964 encoding parameters and hence was not vulnerable.
8967 *) BN_sqr() bug fix.
8968 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
8970 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
8971 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
8972 followed by modular reduction.
8973 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
8975 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
8976 equivalent based on BN_pseudo_rand() instead of BN_rand().
8979 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
8980 This function was broken, as the check for a new client hello message
8981 to handle SGC did not allow these large messages.
8982 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
8985 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
8988 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
8989 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
8992 *) Rework the configuration and shared library support for Tru64 Unix.
8993 The configuration part makes use of modern compiler features and
8994 still retains old compiler behavior for those that run older versions
8995 of the OS. The shared library support part includes a variant that
8996 uses the RPATH feature, and is available through the special
8997 configuration target "alpha-cc-rpath", which will never be selected
8999 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
9001 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
9002 with the same message size as in ssl3_get_certificate_request().
9003 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
9004 messages might inadvertently be reject as too long.
9005 [Petr Lampa <lampa@fee.vutbr.cz>]
9007 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
9010 *) Modified SSL library such that the verify_callback that has been set
9011 specificly for an SSL object with SSL_set_verify() is actually being
9012 used. Before the change, a verify_callback set with this function was
9013 ignored and the verify_callback() set in the SSL_CTX at the time of
9014 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
9015 to allow the necessary settings.
9018 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
9019 explicitly to NULL, as at least on Solaris 8 this seems not always to be
9020 done automatically (in contradiction to the requirements of the C
9021 standard). This made problems when used from OpenSSH.
9024 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
9025 dh->length and always used
9027 BN_rand_range(priv_key, dh->p).
9029 BN_rand_range() is not necessary for Diffie-Hellman, and this
9030 specific range makes Diffie-Hellman unnecessarily inefficient if
9031 dh->length (recommended exponent length) is much smaller than the
9032 length of dh->p. We could use BN_rand_range() if the order of
9033 the subgroup was stored in the DH structure, but we only have
9038 BN_rand(priv_key, l, ...)
9040 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
9046 RSA_eay_public_encrypt
9047 RSA_eay_private_decrypt
9048 RSA_eay_private_encrypt (signing)
9049 RSA_eay_public_decrypt (signature verification)
9051 (default implementations for RSA_public_encrypt,
9052 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
9053 always reject numbers >= n.
9056 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
9057 to synchronize access to 'locking_thread'. This is necessary on
9058 systems where access to 'locking_thread' (an 'unsigned long'
9059 variable) is not atomic.
9062 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
9063 *before* setting the 'crypto_lock_rand' flag. The previous code had
9064 a race condition if 0 is a valid thread ID.
9065 [Travis Vitek <vitek@roguewave.com>]
9067 *) Add support for shared libraries under Irix.
9068 [Albert Chin-A-Young <china@thewrittenword.com>]
9070 *) Add configuration option to build on Linux on both big-endian and
9072 [Ralf Baechle <ralf@uni-koblenz.de>]
9074 *) Add the possibility to create shared libraries on HP-UX.
9077 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
9079 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
9080 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
9081 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
9082 PRNG state recovery was possible based on the output of
9083 one PRNG request appropriately sized to gain knowledge on
9084 'md' followed by enough consecutive 1-byte PRNG requests
9085 to traverse all of 'state'.
9087 1. When updating 'md_local' (the current thread's copy of 'md')
9088 during PRNG output generation, hash all of the previous
9089 'md_local' value, not just the half used for PRNG output.
9091 2. Make the number of bytes from 'state' included into the hash
9092 independent from the number of PRNG bytes requested.
9094 The first measure alone would be sufficient to avoid
9095 Markku-Juhani's attack. (Actually it had never occurred
9096 to me that the half of 'md_local' used for chaining was the
9097 half from which PRNG output bytes were taken -- I had always
9098 assumed that the secret half would be used.) The second
9099 measure makes sure that additional data from 'state' is never
9100 mixed into 'md_local' in small portions; this heuristically
9101 further strengthens the PRNG.
9104 *) Fix crypto/bn/asm/mips3.s.
9107 *) When only the key is given to "enc", the IV is undefined. Print out
9108 an error message in this case.
9111 *) Handle special case when X509_NAME is empty in X509 printing routines.
9114 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
9115 positive and less than q.
9118 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
9119 used: it isn't thread safe and the add_lock_callback should handle
9121 [Paul Rose <Paul.Rose@bridge.com>]
9123 *) Verify that incoming data obeys the block size in
9124 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
9128 [Ulf Möller, Bodo Möller]
9130 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
9131 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
9132 when fixing the server behaviour for backwards-compatible 'client
9133 hello' messages. (Note that the attack is impractical against
9134 SSL 3.0 and TLS 1.0 anyway because length and version checking
9135 means that the probability of guessing a valid ciphertext is
9136 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
9139 Before 0.9.5, the countermeasure (hide the error by generating a
9140 random 'decryption result') did not work properly because
9141 ERR_clear_error() was missing, meaning that SSL_get_error() would
9142 detect the supposedly ignored error.
9144 Both problems are now fixed.
9147 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
9148 (previously it was 1024).
9151 *) Fix for compatibility mode trust settings: ignore trust settings
9152 unless some valid trust or reject settings are present.
9155 *) Fix for blowfish EVP: its a variable length cipher.
9158 *) Fix various bugs related to DSA S/MIME verification. Handle missing
9159 parameters in DSA public key structures and return an error in the
9160 DSA routines if parameters are absent.
9163 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
9164 in the current directory if neither $RANDFILE nor $HOME was set.
9165 RAND_file_name() in 0.9.6a returned NULL in this case. This has
9166 caused some confusion to Windows users who haven't defined $HOME.
9167 Thus RAND_file_name() is changed again: e_os.h can define a
9168 DEFAULT_HOME, which will be used if $HOME is not set.
9169 For Windows, we use "C:"; on other platforms, we still require
9170 environment variables.
9172 *) Move 'if (!initialized) RAND_poll()' into regions protected by
9173 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
9174 having multiple threads call RAND_poll() concurrently.
9177 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
9178 combination of a flag and a thread ID variable.
9179 Otherwise while one thread is in ssleay_rand_bytes (which sets the
9180 flag), *other* threads can enter ssleay_add_bytes without obeying
9181 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
9182 that they do not hold after the first thread unsets add_do_not_lock).
9185 *) Change bctest again: '-x' expressions are not available in all
9189 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
9191 *) Fix a couple of memory leaks in PKCS7_dataDecode()
9192 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
9194 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
9195 the default extension for executables, if any. Also, make the perl
9196 scripts that use symlink() to test if it really exists and use "cp"
9197 if it doesn't. All this made OpenSSL compilable and installable in
9201 *) Fix for asn1_GetSequence() for indefinite length constructed data.
9202 If SEQUENCE is length is indefinite just set c->slen to the total
9203 amount of data available.
9204 [Steve Henson, reported by shige@FreeBSD.org]
9205 [This change does not apply to 0.9.7.]
9207 *) Change bctest to avoid here-documents inside command substitution
9208 (workaround for FreeBSD /bin/sh bug).
9209 For compatibility with Ultrix, avoid shell functions (introduced
9210 in the bctest version that searches along $PATH).
9213 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
9214 with des_encrypt() defined on some operating systems, like Solaris
9218 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
9219 On the Importance of Eliminating Errors in Cryptographic
9220 Computations, J. Cryptology 14 (2001) 2, 101-119,
9221 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
9224 *) MIPS assembler BIGNUM division bug fix.
9227 *) Disabled incorrect Alpha assembler code.
9230 *) Fix PKCS#7 decode routines so they correctly update the length
9231 after reading an EOC for the EXPLICIT tag.
9233 [This change does not apply to 0.9.7.]
9235 *) Fix bug in PKCS#12 key generation routines. This was triggered
9236 if a 3DES key was generated with a 0 initial byte. Include
9237 PKCS12_BROKEN_KEYGEN compilation option to retain the old
9238 (but broken) behaviour.
9241 *) Enhance bctest to search for a working bc along $PATH and print
9243 [Tim Rice <tim@multitalents.net> via Richard Levitte]
9245 *) Fix memory leaks in err.c: free err_data string if necessary;
9246 don't write to the wrong index in ERR_set_error_data.
9249 *) Implement ssl23_peek (analogous to ssl23_read), which previously
9253 *) Replace rdtsc with _emit statements for VC++ version 5.
9254 [Jeremy Cooper <jeremy@baymoo.org>]
9256 *) Make it possible to reuse SSLv2 sessions.
9259 *) In copy_email() check for >= 0 as a return value for
9260 X509_NAME_get_index_by_NID() since 0 is a valid index.
9261 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
9263 *) Avoid coredump with unsupported or invalid public keys by checking if
9264 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
9265 PKCS7_verify() fails with non detached data.
9268 *) Don't use getenv in library functions when run as setuid/setgid.
9269 New function OPENSSL_issetugid().
9272 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
9273 due to incorrect handling of multi-threading:
9275 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
9277 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
9279 3. Count how many times MemCheck_off() has been called so that
9280 nested use can be treated correctly. This also avoids
9281 inband-signalling in the previous code (which relied on the
9282 assumption that thread ID 0 is impossible).
9285 *) Add "-rand" option also to s_client and s_server.
9288 *) Fix CPU detection on Irix 6.x.
9289 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
9290 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9292 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
9295 [This change does not apply to 0.9.7.]
9297 *) Use the cached encoding of an X509_NAME structure rather than
9298 copying it. This is apparently the reason for the libsafe "errors"
9299 but the code is actually correct.
9302 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
9303 Bleichenbacher's DSA attack.
9304 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
9305 to be set and top=0 forces the highest bit to be set; top=-1 is new
9306 and leaves the highest bit random.
9307 [Ulf Moeller, Bodo Moeller]
9309 *) In the NCONF_...-based implementations for CONF_... queries
9310 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
9311 a temporary CONF structure with the data component set to NULL
9312 (which gives segmentation faults in lh_retrieve).
9313 Instead, use NULL for the CONF pointer in CONF_get_string and
9314 CONF_get_number (which may use environment variables) and directly
9315 return NULL from CONF_get_section.
9318 *) Fix potential buffer overrun for EBCDIC.
9321 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
9322 keyUsage if basicConstraints absent for a CA.
9325 *) Make SMIME_write_PKCS7() write mail header values with a format that
9326 is more generally accepted (no spaces before the semicolon), since
9327 some programs can't parse those values properly otherwise. Also make
9328 sure BIO's that break lines after each write do not create invalid
9332 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
9333 macros previously used would not encode an empty SEQUENCE OF
9334 and break the signature.
9336 [This change does not apply to 0.9.7.]
9338 *) Zero the premaster secret after deriving the master secret in
9342 *) Add some EVP_add_digest_alias registrations (as found in
9343 OpenSSL_add_all_digests()) to SSL_library_init()
9344 aka OpenSSL_add_ssl_algorithms(). This provides improved
9345 compatibility with peers using X.509 certificates
9346 with unconventional AlgorithmIdentifier OIDs.
9349 *) Fix for Irix with NO_ASM.
9350 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
9352 *) ./config script fixes.
9353 [Ulf Moeller, Richard Levitte]
9355 *) Fix 'openssl passwd -1'.
9358 *) Change PKCS12_key_gen_asc() so it can cope with non null
9359 terminated strings whose length is passed in the passlen
9360 parameter, for example from PEM callbacks. This was done
9361 by adding an extra length parameter to asc2uni().
9362 [Steve Henson, reported by <oddissey@samsung.co.kr>]
9364 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
9365 call failed, free the DSA structure.
9368 *) Fix to uni2asc() to cope with zero length Unicode strings.
9369 These are present in some PKCS#12 files.
9372 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
9373 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
9374 when writing a 32767 byte record.
9375 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
9377 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
9378 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
9380 (RSA objects have a reference count access to which is protected
9381 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
9382 so they are meant to be shared between threads.)
9383 [Bodo Moeller, Geoff Thorpe; original patch submitted by
9384 "Reddie, Steven" <Steven.Reddie@ca.com>]
9386 *) Fix a deadlock in CRYPTO_mem_leaks().
9389 *) Use better test patterns in bntest.
9392 *) rand_win.c fix for Borland C.
9395 *) BN_rshift bugfix for n == 0.
9398 *) Add a 'bctest' script that checks for some known 'bc' bugs
9399 so that 'make test' does not abort just because 'bc' is broken.
9402 *) Store verify_result within SSL_SESSION also for client side to
9403 avoid potential security hole. (Re-used sessions on the client side
9404 always resulted in verify_result==X509_V_OK, not using the original
9405 result of the server certificate verification.)
9408 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9409 SSL3_RT_APPLICATION_DATA, return 0.
9410 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9414 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9415 releases, have been re-implemented by renaming the previous
9416 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9417 and ssl3_read_internal, respectively, and adding 'peek' parameters
9418 to them. The new ssl[23]_{read,peek} functions are calls to
9419 ssl[23]_read_internal with the 'peek' flag set appropriately.
9420 A 'peek' parameter has also been added to ssl3_read_bytes, which
9421 does the actual work for ssl3_read_internal.
9424 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9425 the method-specific "init()" handler. Also clean up ex_data after
9426 calling the method-specific "finish()" handler. Previously, this was
9427 happening the other way round.
9430 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9431 The previous value, 12, was not always sufficient for BN_mod_exp().
9434 *) Make sure that shared libraries get the internal name engine with
9435 the full version number and not just 0. This should mark the
9436 shared libraries as not backward compatible. Of course, this should
9437 be changed again when we can guarantee backward binary compatibility.
9440 *) Fix typo in get_cert_by_subject() in by_dir.c
9441 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9443 *) Rework the system to generate shared libraries:
9445 - Make note of the expected extension for the shared libraries and
9446 if there is a need for symbolic links from for example libcrypto.so.0
9447 to libcrypto.so.0.9.7. There is extended info in Configure for
9450 - Make as few rebuilds of the shared libraries as possible.
9452 - Still avoid linking the OpenSSL programs with the shared libraries.
9454 - When installing, install the shared libraries separately from the
9458 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9460 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9461 and not in SSL_clear because the latter is also used by the
9462 accept/connect functions; previously, the settings made by
9463 SSL_set_read_ahead would be lost during the handshake.
9464 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
9466 *) Correct util/mkdef.pl to be selective about disabled algorithms.
9467 Previously, it would create entries for disabled algorithms no
9471 *) Added several new manual pages for SSL_* function.
9474 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
9476 *) In ssl23_get_client_hello, generate an error message when faced
9477 with an initial SSL 3.0/TLS record that is too small to contain the
9478 first two bytes of the ClientHello message, i.e. client_version.
9479 (Note that this is a pathologic case that probably has never happened
9480 in real life.) The previous approach was to use the version number
9481 from the record header as a substitute; but our protocol choice
9482 should not depend on that one because it is not authenticated
9483 by the Finished messages.
9486 *) More robust randomness gathering functions for Windows.
9487 [Jeffrey Altman <jaltman@columbia.edu>]
9489 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
9490 not set then we don't setup the error code for issuer check errors
9491 to avoid possibly overwriting other errors which the callback does
9492 handle. If an application does set the flag then we assume it knows
9493 what it is doing and can handle the new informational codes
9497 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
9498 a general "ANY" type, as such it should be able to decode anything
9499 including tagged types. However it didn't check the class so it would
9500 wrongly interpret tagged types in the same way as their universal
9501 counterpart and unknown types were just rejected. Changed so that the
9502 tagged and unknown types are handled in the same way as a SEQUENCE:
9503 that is the encoding is stored intact. There is also a new type
9504 "V_ASN1_OTHER" which is used when the class is not universal, in this
9505 case we have no idea what the actual type is so we just lump them all
9509 *) On VMS, stdout may very well lead to a file that is written to
9510 in a record-oriented fashion. That means that every write() will
9511 write a separate record, which will be read separately by the
9512 programs trying to read from it. This can be very confusing.
9514 The solution is to put a BIO filter in the way that will buffer
9515 text until a linefeed is reached, and then write everything a
9516 line at a time, so every record written will be an actual line,
9517 not chunks of lines and not (usually doesn't happen, but I've
9518 seen it once) several lines in one record. BIO_f_linebuffer() is
9521 Currently, it's a VMS-only method, because that's where it has
9522 been tested well enough.
9525 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
9526 it can return incorrect results.
9527 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
9528 but it was in 0.9.6-beta[12].)
9531 *) Disable the check for content being present when verifying detached
9532 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
9533 include zero length content when signing messages.
9536 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
9537 BIO_ctrl (for BIO pairs).
9540 *) Add DSO method for VMS.
9543 *) Bug fix: Montgomery multiplication could produce results with the
9547 *) Add RPM specification openssl.spec and modify it to build three
9548 packages. The default package contains applications, application
9549 documentation and run-time libraries. The devel package contains
9550 include files, static libraries and function documentation. The
9551 doc package contains the contents of the doc directory. The original
9552 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
9555 *) Add a large number of documentation files for many SSL routines.
9556 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9558 *) Add a configuration entry for Sony News 4.
9559 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
9561 *) Don't set the two most significant bits to one when generating a
9562 random number < q in the DSA library.
9565 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
9566 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
9567 the underlying transport is blocking) if a handshake took place.
9568 (The default behaviour is needed by applications such as s_client
9569 and s_server that use select() to determine when to use SSL_read;
9570 but for applications that know in advance when to expect data, it
9571 just makes things more complicated.)
9574 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
9578 *) Add a few more EBCDIC conditionals that make `req' and `x509'
9579 work better on such systems.
9580 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9582 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
9583 Update PKCS12_parse() so it copies the friendlyName and the
9584 keyid to the certificates aux info.
9587 *) Fix bug in PKCS7_verify() which caused an infinite loop
9588 if there was more than one signature.
9589 [Sven Uszpelkat <su@celocom.de>]
9591 *) Major change in util/mkdef.pl to include extra information
9592 about each symbol, as well as presenting variables as well
9593 as functions. This change means that there's n more need
9594 to rebuild the .num files when some algorithms are excluded.
9597 *) Allow the verify time to be set by an application,
9598 rather than always using the current time.
9601 *) Phase 2 verify code reorganisation. The certificate
9602 verify code now looks up an issuer certificate by a
9603 number of criteria: subject name, authority key id
9604 and key usage. It also verifies self signed certificates
9605 by the same criteria. The main comparison function is
9606 X509_check_issued() which performs these checks.
9608 Lot of changes were necessary in order to support this
9609 without completely rewriting the lookup code.
9611 Authority and subject key identifier are now cached.
9613 The LHASH 'certs' is X509_STORE has now been replaced
9614 by a STACK_OF(X509_OBJECT). This is mainly because an
9615 LHASH can't store or retrieve multiple objects with
9616 the same hash value.
9618 As a result various functions (which were all internal
9619 use only) have changed to handle the new X509_STORE
9620 structure. This will break anything that messed round
9621 with X509_STORE internally.
9623 The functions X509_STORE_add_cert() now checks for an
9624 exact match, rather than just subject name.
9626 The X509_STORE API doesn't directly support the retrieval
9627 of multiple certificates matching a given criteria, however
9628 this can be worked round by performing a lookup first
9629 (which will fill the cache with candidate certificates)
9630 and then examining the cache for matches. This is probably
9631 the best we can do without throwing out X509_LOOKUP
9632 entirely (maybe later...).
9634 The X509_VERIFY_CTX structure has been enhanced considerably.
9636 All certificate lookup operations now go via a get_issuer()
9637 callback. Although this currently uses an X509_STORE it
9638 can be replaced by custom lookups. This is a simple way
9639 to bypass the X509_STORE hackery necessary to make this
9640 work and makes it possible to use more efficient techniques
9641 in future. A very simple version which uses a simple
9642 STACK for its trusted certificate store is also provided
9643 using X509_STORE_CTX_trusted_stack().
9645 The verify_cb() and verify() callbacks now have equivalents
9646 in the X509_STORE_CTX structure.
9648 X509_STORE_CTX also has a 'flags' field which can be used
9649 to customise the verify behaviour.
9652 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
9653 excludes S/MIME capabilities.
9656 *) When a certificate request is read in keep a copy of the
9657 original encoding of the signed data and use it when outputting
9658 again. Signatures then use the original encoding rather than
9659 a decoded, encoded version which may cause problems if the
9660 request is improperly encoded.
9663 *) For consistency with other BIO_puts implementations, call
9664 buffer_write(b, ...) directly in buffer_puts instead of calling
9667 In BIO_puts, increment b->num_write as in BIO_write.
9668 [Peter.Sylvester@EdelWeb.fr]
9670 *) Fix BN_mul_word for the case where the word is 0. (We have to use
9671 BN_zero, we may not return a BIGNUM with an array consisting of
9675 *) Avoid calling abort() from within the library when problems are
9676 detected, except if preprocessor symbols have been defined
9677 (such as REF_CHECK, BN_DEBUG etc.).
9680 *) New openssl application 'rsautl'. This utility can be
9681 used for low level RSA operations. DER public key
9682 BIO/fp routines also added.
9685 *) New Configure entry and patches for compiling on QNX 4.
9686 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
9688 *) A demo state-machine implementation was sponsored by
9689 Nuron (http://www.nuron.com/) and is now available in
9690 demos/state_machine.
9693 *) New options added to the 'dgst' utility for signature
9694 generation and verification.
9697 *) Unrecognized PKCS#7 content types are now handled via a
9698 catch all ASN1_TYPE structure. This allows unsupported
9699 types to be stored as a "blob" and an application can
9700 encode and decode it manually.
9703 *) Fix various signed/unsigned issues to make a_strex.c
9705 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
9707 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
9708 length if passed a buffer. ASN1_INTEGER_to_BN failed
9709 if passed a NULL BN and its argument was negative.
9710 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
9712 *) Modification to PKCS#7 encoding routines to output definite
9713 length encoding. Since currently the whole structures are in
9714 memory there's not real point in using indefinite length
9715 constructed encoding. However if OpenSSL is compiled with
9716 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
9719 *) Added BIO_vprintf() and BIO_vsnprintf().
9722 *) Added more prefixes to parse for in the strings written
9723 through a logging bio, to cover all the levels that are available
9724 through syslog. The prefixes are now:
9726 PANIC, EMERG, EMR => LOG_EMERG
9727 ALERT, ALR => LOG_ALERT
9728 CRIT, CRI => LOG_CRIT
9729 ERROR, ERR => LOG_ERR
9730 WARNING, WARN, WAR => LOG_WARNING
9731 NOTICE, NOTE, NOT => LOG_NOTICE
9732 INFO, INF => LOG_INFO
9733 DEBUG, DBG => LOG_DEBUG
9735 and as before, if none of those prefixes are present at the
9736 beginning of the string, LOG_ERR is chosen.
9738 On Win32, the LOG_* levels are mapped according to this:
9740 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
9741 LOG_WARNING => EVENTLOG_WARNING_TYPE
9742 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
9746 *) Made it possible to reconfigure with just the configuration
9747 argument "reconf" or "reconfigure". The command line arguments
9748 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
9749 and are retrieved from there when reconfiguring.
9753 [Assar Westerlund <assar@sics.se>, Richard Levitte]
9755 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
9758 *) The obj_dat.pl script was messing up the sorting of object
9759 names. The reason was that it compared the quoted version
9760 of strings as a result "OCSP" > "OCSP Signing" because
9761 " > SPACE. Changed script to store unquoted versions of
9762 names and add quotes on output. It was also omitting some
9763 names from the lookup table if they were given a default
9764 value (that is if SN is missing it is given the same
9765 value as LN and vice versa), these are now added on the
9766 grounds that if an object has a name we should be able to
9767 look it up. Finally added warning output when duplicate
9768 short or long names are found.
9771 *) Changes needed for Tandem NSK.
9772 [Scott Uroff <scott@xypro.com>]
9774 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
9775 RSA_padding_check_SSLv23(), special padding was never detected
9776 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
9777 version rollback attacks was not effective.
9779 In s23_clnt.c, don't use special rollback-attack detection padding
9780 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
9781 client; similarly, in s23_srvr.c, don't do the rollback check if
9782 SSL 2.0 is the only protocol enabled in the server.
9785 *) Make it possible to get hexdumps of unprintable data with 'openssl
9786 asn1parse'. By implication, the functions ASN1_parse_dump() and
9787 BIO_dump_indent() are added.
9790 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
9791 these print out strings and name structures based on various
9792 flags including RFC2253 support and proper handling of
9793 multibyte characters. Added options to the 'x509' utility
9794 to allow the various flags to be set.
9797 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
9798 Also change the functions X509_cmp_current_time() and
9799 X509_gmtime_adj() work with an ASN1_TIME structure,
9800 this will enable certificates using GeneralizedTime in validity
9801 dates to be checked.
9804 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
9805 negative public key encodings) on by default,
9806 NO_NEG_PUBKEY_BUG can be set to disable it.
9809 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
9810 content octets. An i2c_ASN1_OBJECT is unnecessary because
9811 the encoding can be trivially obtained from the structure.
9814 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
9815 not read locks (CRYPTO_r_[un]lock).
9818 *) A first attempt at creating official support for shared
9819 libraries through configuration. I've kept it so the
9820 default is static libraries only, and the OpenSSL programs
9821 are always statically linked for now, but there are
9822 preparations for dynamic linking in place.
9823 This has been tested on Linux and Tru64.
9826 *) Randomness polling function for Win9x, as described in:
9827 Peter Gutmann, Software Generation of Practically Strong
9831 *) Fix so PRNG is seeded in req if using an already existing
9835 *) New options to smime application. -inform and -outform
9836 allow alternative formats for the S/MIME message including
9837 PEM and DER. The -content option allows the content to be
9838 specified separately. This should allow things like Netscape
9839 form signing output easier to verify.
9842 *) Fix the ASN1 encoding of tags using the 'long form'.
9845 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
9846 STRING types. These convert content octets to and from the
9847 underlying type. The actual tag and length octets are
9848 already assumed to have been read in and checked. These
9849 are needed because all other string types have virtually
9850 identical handling apart from the tag. By having versions
9851 of the ASN1 functions that just operate on content octets
9852 IMPLICIT tagging can be handled properly. It also allows
9853 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
9854 and ASN1_INTEGER are identical apart from the tag.
9857 *) Change the handling of OID objects as follows:
9859 - New object identifiers are inserted in objects.txt, following
9860 the syntax given in objects.README.
9861 - objects.pl is used to process obj_mac.num and create a new
9863 - obj_dat.pl is used to create a new obj_dat.h, using the data in
9866 This is currently kind of a hack, and the perl code in objects.pl
9867 isn't very elegant, but it works as I intended. The simplest way
9868 to check that it worked correctly is to look in obj_dat.h and
9869 check the array nid_objs and make sure the objects haven't moved
9870 around (this is important!). Additions are OK, as well as
9871 consistent name changes.
9874 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
9877 *) Addition of the command line parameter '-rand file' to 'openssl req'.
9878 The given file adds to whatever has already been seeded into the
9879 random pool through the RANDFILE configuration file option or
9880 environment variable, or the default random state file.
9883 *) mkstack.pl now sorts each macro group into lexical order.
9884 Previously the output order depended on the order the files
9885 appeared in the directory, resulting in needless rewriting
9889 *) Patches to make OpenSSL compile under Win32 again. Mostly
9890 work arounds for the VC++ problem that it treats func() as
9891 func(void). Also stripped out the parts of mkdef.pl that
9892 added extra typesafe functions: these no longer exist.
9895 *) Reorganisation of the stack code. The macros are now all
9896 collected in safestack.h . Each macro is defined in terms of
9897 a "stack macro" of the form SKM_<name>(type, a, b). The
9898 DEBUG_SAFESTACK is now handled in terms of function casts,
9899 this has the advantage of retaining type safety without the
9900 use of additional functions. If DEBUG_SAFESTACK is not defined
9901 then the non typesafe macros are used instead. Also modified the
9902 mkstack.pl script to handle the new form. Needs testing to see
9903 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
9904 the default if no major problems. Similar behaviour for ASN1_SET_OF
9905 and PKCS12_STACK_OF.
9908 *) When some versions of IIS use the 'NET' form of private key the
9909 key derivation algorithm is different. Normally MD5(password) is
9910 used as a 128 bit RC4 key. In the modified case
9911 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
9912 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
9913 as the old Netscape_RSA functions except they have an additional
9914 'sgckey' parameter which uses the modified algorithm. Also added
9915 an -sgckey command line option to the rsa utility. Thanks to
9916 Adrian Peck <bertie@ncipher.com> for posting details of the modified
9917 algorithm to openssl-dev.
9920 *) The evp_local.h macros were using 'c.##kname' which resulted in
9921 invalid expansion on some systems (SCO 5.0.5 for example).
9922 Corrected to 'c.kname'.
9923 [Phillip Porch <root@theporch.com>]
9925 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
9926 a STACK of email addresses from a certificate or request, these look
9927 in the subject name and the subject alternative name extensions and
9928 omit any duplicate addresses.
9931 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
9932 This makes DSA verification about 2 % faster.
9935 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
9936 (meaning that now 2^5 values will be precomputed, which is only 4 KB
9937 plus overhead for 1024 bit moduli).
9938 This makes exponentiations about 0.5 % faster for 1024 bit
9939 exponents (as measured by "openssl speed rsa2048").
9942 *) Rename memory handling macros to avoid conflicts with other
9944 Malloc => OPENSSL_malloc
9945 Malloc_locked => OPENSSL_malloc_locked
9946 Realloc => OPENSSL_realloc
9947 Free => OPENSSL_free
9950 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
9951 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
9954 *) CygWin32 support.
9955 [John Jarvie <jjarvie@newsguy.com>]
9957 *) The type-safe stack code has been rejigged. It is now only compiled
9958 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
9959 by default all type-specific stack functions are "#define"d back to
9960 standard stack functions. This results in more streamlined output
9961 but retains the type-safety checking possibilities of the original
9965 *) The STACK code has been cleaned up, and certain type declarations
9966 that didn't make a lot of sense have been brought in line. This has
9967 also involved a cleanup of sorts in safestack.h to more correctly
9968 map type-safe stack functions onto their plain stack counterparts.
9969 This work has also resulted in a variety of "const"ifications of
9970 lots of the code, especially "_cmp" operations which should normally
9971 be prototyped with "const" parameters anyway.
9974 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
9975 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
9976 (The PRNG state consists of two parts, the large pool 'state' and 'md',
9977 where all of 'md' is used each time the PRNG is used, but 'state'
9978 is used only indexed by a cyclic counter. As entropy may not be
9979 well distributed from the beginning, 'md' is important as a
9980 chaining variable. However, the output function chains only half
9981 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
9982 all of 'md', and seeding with STATE_SIZE dummy bytes will result
9983 in all of 'state' being rewritten, with the new values depending
9984 on virtually all of 'md'. This overcomes the 80 bit limitation.)
9987 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
9988 the handshake is continued after ssl_verify_cert_chain();
9989 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
9990 can lead to 'unexplainable' connection aborts later.
9991 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
9993 *) Major EVP API cipher revision.
9994 Add hooks for extra EVP features. This allows various cipher
9995 parameters to be set in the EVP interface. Support added for variable
9996 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
9997 setting of RC2 and RC5 parameters.
9999 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
10002 Remove lots of duplicated code from the EVP library. For example *every*
10003 cipher init() function handles the 'iv' in the same way according to the
10004 cipher mode. They also all do nothing if the 'key' parameter is NULL and
10005 for CFB and OFB modes they zero ctx->num.
10007 New functionality allows removal of S/MIME code RC2 hack.
10009 Most of the routines have the same form and so can be declared in terms
10012 By shifting this to the top level EVP_CipherInit() it can be removed from
10013 all individual ciphers. If the cipher wants to handle IVs or keys
10014 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
10017 Change lots of functions like EVP_EncryptUpdate() to now return a
10018 value: although software versions of the algorithms cannot fail
10019 any installed hardware versions can.
10022 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
10023 this option is set, tolerate broken clients that send the negotiated
10024 protocol version number instead of the requested protocol version
10028 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
10029 i.e. non-zero for export ciphersuites, zero otherwise.
10030 Previous versions had this flag inverted, inconsistent with
10031 rsa_tmp_cb (..._TMP_RSA_CB).
10032 [Bodo Moeller; problem reported by Amit Chopra]
10034 *) Add missing DSA library text string. Work around for some IIS
10035 key files with invalid SEQUENCE encoding.
10038 *) Add a document (doc/standards.txt) that list all kinds of standards
10039 and so on that are implemented in OpenSSL.
10042 *) Enhance c_rehash script. Old version would mishandle certificates
10043 with the same subject name hash and wouldn't handle CRLs at all.
10044 Added -fingerprint option to crl utility, to support new c_rehash
10048 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
10051 *) Fix for SSL server purpose checking. Server checking was
10052 rejecting certificates which had extended key usage present
10053 but no ssl client purpose.
10054 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
10056 *) Make PKCS#12 code work with no password. The PKCS#12 spec
10057 is a little unclear about how a blank password is handled.
10058 Since the password in encoded as a BMPString with terminating
10059 double NULL a zero length password would end up as just the
10060 double NULL. However no password at all is different and is
10061 handled differently in the PKCS#12 key generation code. NS
10062 treats a blank password as zero length. MSIE treats it as no
10063 password on export: but it will try both on import. We now do
10064 the same: PKCS12_parse() tries zero length and no password if
10065 the password is set to "" or NULL (NULL is now a valid password:
10066 it wasn't before) as does the pkcs12 application.
10069 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
10070 perror when PEM_read_bio_X509_REQ fails, the error message must
10071 be obtained from the error queue.
10074 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
10075 it in ERR_remove_state if appropriate, and change ERR_get_state
10076 accordingly to avoid race conditions (this is necessary because
10077 thread_hash is no longer constant once set).
10080 *) Bugfix for linux-elf makefile.one.
10083 *) RSA_get_default_method() will now cause a default
10084 RSA_METHOD to be chosen if one doesn't exist already.
10085 Previously this was only set during a call to RSA_new()
10086 or RSA_new_method(NULL) meaning it was possible for
10087 RSA_get_default_method() to return NULL.
10090 *) Added native name translation to the existing DSO code
10091 that will convert (if the flag to do so is set) filenames
10092 that are sufficiently small and have no path information
10093 into a canonical native form. Eg. "blah" converted to
10094 "libblah.so" or "blah.dll" etc.
10097 *) New function ERR_error_string_n(e, buf, len) which is like
10098 ERR_error_string(e, buf), but writes at most 'len' bytes
10099 including the 0 terminator. For ERR_error_string_n, 'buf'
10101 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
10103 *) CONF library reworked to become more general. A new CONF
10104 configuration file reader "class" is implemented as well as a
10105 new functions (NCONF_*, for "New CONF") to handle it. The now
10106 old CONF_* functions are still there, but are reimplemented to
10107 work in terms of the new functions. Also, a set of functions
10108 to handle the internal storage of the configuration data is
10109 provided to make it easier to write new configuration file
10110 reader "classes" (I can definitely see something reading a
10111 configuration file in XML format, for example), called _CONF_*,
10112 or "the configuration storage API"...
10114 The new configuration file reading functions are:
10116 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
10117 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
10119 NCONF_default, NCONF_WIN32
10121 NCONF_dump_fp, NCONF_dump_bio
10123 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
10124 NCONF_new creates a new CONF object. This works in the same way
10125 as other interfaces in OpenSSL, like the BIO interface.
10126 NCONF_dump_* dump the internal storage of the configuration file,
10127 which is useful for debugging. All other functions take the same
10128 arguments as the old CONF_* functions wth the exception of the
10129 first that must be a `CONF *' instead of a `LHASH *'.
10131 To make it easer to use the new classes with the old CONF_* functions,
10132 the function CONF_set_default_method is provided.
10135 *) Add '-tls1' option to 'openssl ciphers', which was already
10136 mentioned in the documentation but had not been implemented.
10137 (This option is not yet really useful because even the additional
10138 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
10141 *) Initial DSO code added into libcrypto for letting OpenSSL (and
10142 OpenSSL-based applications) load shared libraries and bind to
10143 them in a portable way.
10144 [Geoff Thorpe, with contributions from Richard Levitte]
10146 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
10148 *) Make sure _lrotl and _lrotr are only used with MSVC.
10150 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
10151 (the default implementation of RAND_status).
10153 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
10154 to '-clrext' (= clear extensions), as intended and documented.
10155 [Bodo Moeller; inconsistency pointed out by Michael Attili
10156 <attili@amaxo.com>]
10158 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
10159 was larger than the MD block size.
10160 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
10162 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
10163 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
10164 using the passed key: if the passed key was a private key the result
10165 of X509_print(), for example, would be to print out all the private key
10169 *) des_quad_cksum() byte order bug fix.
10170 [Ulf Möller, using the problem description in krb4-0.9.7, where
10171 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
10173 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
10175 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
10177 *) For easily testing in shell scripts whether some command
10178 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
10179 returns with exit code 0 iff no command of the given name is available.
10180 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
10181 the output goes to stdout and nothing is printed to stderr.
10182 Additional arguments are always ignored.
10184 Since for each cipher there is a command of the same name,
10185 the 'no-cipher' compilation switches can be tested this way.
10187 ('openssl no-XXX' is not able to detect pseudo-commands such
10188 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
10191 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
10194 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
10195 is set; it will be thrown away anyway because each handshake creates
10197 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
10198 to parameters -- in previous versions (since OpenSSL 0.9.3) the
10199 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
10200 you effectively got SSL_OP_SINGLE_DH_USE when using this macro.
10203 *) New s_client option -ign_eof: EOF at stdin is ignored, and
10204 'Q' and 'R' lose their special meanings (quit/renegotiate).
10205 This is part of what -quiet does; unlike -quiet, -ign_eof
10206 does not suppress any output.
10209 *) Add compatibility options to the purpose and trust code. The
10210 purpose X509_PURPOSE_ANY is "any purpose" which automatically
10211 accepts a certificate or CA, this was the previous behaviour,
10212 with all the associated security issues.
10214 X509_TRUST_COMPAT is the old trust behaviour: only and
10215 automatically trust self signed roots in certificate store. A
10216 new trust setting X509_TRUST_DEFAULT is used to specify that
10217 a purpose has no associated trust setting and it should instead
10218 use the value in the default purpose.
10221 *) Fix the PKCS#8 DSA private key code so it decodes keys again
10222 and fix a memory leak.
10225 *) In util/mkerr.pl (which implements 'make errors'), preserve
10226 reason strings from the previous version of the .c file, as
10227 the default to have only downcase letters (and digits) in
10228 automatically generated reasons codes is not always appropriate.
10231 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
10232 using strerror. Previously, ERR_reason_error_string() returned
10233 library names as reason strings for SYSerr; but SYSerr is a special
10234 case where small numbers are errno values, not library numbers.
10237 *) Add '-dsaparam' option to 'openssl dhparam' application. This
10238 converts DSA parameters into DH parameters. (When creating parameters,
10239 DSA_generate_parameters is used.)
10242 *) Include 'length' (recommended exponent length) in C code generated
10243 by 'openssl dhparam -C'.
10246 *) The second argument to set_label in perlasm was already being used
10247 so couldn't be used as a "file scope" flag. Moved to third argument
10251 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
10252 instead of RAND_bytes for encryption IVs and salts.
10255 *) Include RAND_status() into RAND_METHOD instead of implementing
10256 it only for md_rand.c Otherwise replacing the PRNG by calling
10257 RAND_set_rand_method would be impossible.
10260 *) Don't let DSA_generate_key() enter an infinite loop if the random
10261 number generation fails.
10264 *) New 'rand' application for creating pseudo-random output.
10267 *) Added configuration support for Linux/IA64
10268 [Rolf Haberrecker <rolf@suse.de>]
10270 *) Assembler module support for Mingw32.
10273 *) Shared library support for HPUX (in shlib/).
10274 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
10276 *) Shared library support for Solaris gcc.
10277 [Lutz Behnke <behnke@trustcenter.de>]
10279 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
10281 *) PKCS7_encrypt() was adding text MIME headers twice because they
10282 were added manually and by SMIME_crlf_copy().
10285 *) In bntest.c don't call BN_rand with zero bits argument.
10286 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
10288 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
10289 case was implemented. This caused BN_div_recp() to fail occasionally.
10292 *) Add an optional second argument to the set_label() in the perl
10293 assembly language builder. If this argument exists and is set
10294 to 1 it signals that the assembler should use a symbol whose
10295 scope is the entire file, not just the current function. This
10296 is needed with MASM which uses the format label:: for this scope.
10297 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
10299 *) Change the ASN1 types so they are typedefs by default. Before
10300 almost all types were #define'd to ASN1_STRING which was causing
10301 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
10305 *) Change names of new functions to the new get1/get0 naming
10306 convention: After 'get1', the caller owns a reference count
10307 and has to call ..._free; 'get0' returns a pointer to some
10308 data structure without incrementing reference counters.
10309 (Some of the existing 'get' functions increment a reference
10310 counter, some don't.)
10311 Similarly, 'set1' and 'add1' functions increase reference
10312 counters or duplicate objects.
10315 *) Allow for the possibility of temp RSA key generation failure:
10316 the code used to assume it always worked and crashed on failure.
10319 *) Fix potential buffer overrun problem in BIO_printf().
10320 [Ulf Möller, using public domain code by Patrick Powell; problem
10321 pointed out by David Sacerdote <das33@cornell.edu>]
10323 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
10324 RAND_egd() and RAND_status(). In the command line application,
10325 the EGD socket can be specified like a seed file using RANDFILE
10329 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
10330 Some CAs (e.g. Verisign) distribute certificates in this form.
10333 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
10334 list to exclude them. This means that no special compilation option
10335 is needed to use anonymous DH: it just needs to be included in the
10339 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
10340 EVP_MD_type. The old functionality is available in a new macro called
10341 EVP_MD_md(). Change code that uses it and update docs.
10344 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
10345 where the 'void *' argument is replaced by a function pointer argument.
10346 Previously 'void *' was abused to point to functions, which works on
10347 many platforms, but is not correct. As these functions are usually
10348 called by macros defined in OpenSSL header files, most source code
10349 should work without changes.
10352 *) <openssl/opensslconf.h> (which is created by Configure) now contains
10353 sections with information on -D... compiler switches used for
10354 compiling the library so that applications can see them. To enable
10355 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
10356 must be defined. E.g.,
10357 #define OPENSSL_ALGORITHM_DEFINES
10358 #include <openssl/opensslconf.h>
10359 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
10360 [Richard Levitte, Ulf and Bodo Möller]
10362 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
10366 *) Change the 'other' type in certificate aux info to a STACK_OF
10367 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
10368 the required ASN1 format: arbitrary types determined by an OID.
10371 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
10372 argument to 'req'. This is not because the function is newer or
10373 better than others it just uses the work 'NEW' in the certificate
10374 request header lines. Some software needs this.
10377 *) Reorganise password command line arguments: now passwords can be
10378 obtained from various sources. Delete the PEM_cb function and make
10379 it the default behaviour: i.e. if the callback is NULL and the
10380 usrdata argument is not NULL interpret it as a null terminated pass
10381 phrase. If usrdata and the callback are NULL then the pass phrase
10382 is prompted for as usual.
10385 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
10386 the support is automatically enabled. The resulting binaries will
10387 autodetect the card and use it if present.
10388 [Ben Laurie and Compaq Inc.]
10390 *) Work around for Netscape hang bug. This sends certificate request
10391 and server done in one record. Since this is perfectly legal in the
10392 SSL/TLS protocol it isn't a "bug" option and is on by default. See
10393 the bugs/SSLv3 entry for more info.
10396 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
10399 *) Add -rand argument to smime and pkcs12 applications and read/write
10403 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10406 *) Add command line password options to the remaining applications.
10409 *) Bug fix for BN_div_recp() for numerators with an even number of
10413 *) More tests in bntest.c, and changed test_bn output.
10416 *) ./config recognizes MacOS X now.
10419 *) Bug fix for BN_div() when the first words of num and divisor are
10420 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10423 *) Add support for various broken PKCS#8 formats, and command line
10424 options to produce them.
10427 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10428 get temporary BIGNUMs from a BN_CTX.
10431 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10435 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10436 include a #define from the old name to the new. The original intent
10437 was that statically linked binaries could for example just call
10438 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10439 link with digests. This never worked because SSLeay_add_all_digests()
10440 and SSLeay_add_all_ciphers() were in the same source file so calling
10441 one would link with the other. They are now in separate source files.
10444 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10447 *) Use a less unusual form of the Miller-Rabin primality test (it used
10448 a binary algorithm for exponentiation integrated into the Miller-Rabin
10449 loop, our standard modexp algorithms are faster).
10452 *) Support for the EBCDIC character set completed.
10453 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10455 *) Source code cleanups: use const where appropriate, eliminate casts,
10456 use void * instead of char * in lhash.
10459 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10460 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10461 this the server could overwrite ephemeral keys that the client
10465 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
10466 using 50 iterations of the Rabin-Miller test.
10468 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
10469 iterations of the Rabin-Miller test as required by the appendix
10470 to FIPS PUB 186[-1]) instead of DSA_is_prime.
10471 As BN_is_prime_fasttest includes trial division, DSA parameter
10472 generation becomes much faster.
10474 This implies a change for the callback functions in DSA_is_prime
10475 and DSA_generate_parameters: The callback function is called once
10476 for each positive witness in the Rabin-Miller test, not just
10477 occasionally in the inner loop; and the parameters to the
10478 callback function now provide an iteration count for the outer
10479 loop rather than for the current invocation of the inner loop.
10480 DSA_generate_parameters additionally can call the callback
10481 function with an 'iteration count' of -1, meaning that a
10482 candidate has passed the trial division test (when q is generated
10483 from an application-provided seed, trial division is skipped).
10486 *) New function BN_is_prime_fasttest that optionally does trial
10487 division before starting the Rabin-Miller test and has
10488 an additional BN_CTX * argument (whereas BN_is_prime always
10489 has to allocate at least one BN_CTX).
10490 'callback(1, -1, cb_arg)' is called when a number has passed the
10491 trial division stage.
10494 *) Fix for bug in CRL encoding. The validity dates weren't being handled
10498 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
10501 *) New function BN_pseudo_rand().
10504 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
10505 bignum version of BN_from_montgomery() with the working code from
10506 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
10510 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
10511 made it impossible to use the same SSL_SESSION data structure in
10512 SSL2 clients in multiple threads.
10515 *) The return value of RAND_load_file() no longer counts bytes obtained
10516 by stat(). RAND_load_file(..., -1) is new and uses the complete file
10517 to seed the PRNG (previously an explicit byte count was required).
10518 [Ulf Möller, Bodo Möller]
10520 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
10521 used (char *) instead of (void *) and had casts all over the place.
10524 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
10527 *) Retain source code compatibility for BN_prime_checks macro:
10528 BN_is_prime(..., BN_prime_checks, ...) now uses
10529 BN_prime_checks_for_size to determine the appropriate number of
10530 Rabin-Miller iterations.
10533 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
10534 DH_CHECK_P_NOT_SAFE_PRIME.
10535 (Check if this is true? OpenPGP calls them "strong".)
10538 *) Merge the functionality of "dh" and "gendh" programs into a new program
10539 "dhparam". The old programs are retained for now but will handle DH keys
10540 (instead of parameters) in future.
10543 *) Make the ciphers, s_server and s_client programs check the return values
10544 when a new cipher list is set.
10547 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
10548 ciphers. Before when the 56bit ciphers were enabled the sorting was
10551 The syntax for the cipher sorting has been extended to support sorting by
10552 cipher-strength (using the strength_bits hard coded in the tables).
10553 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
10555 Fix a bug in the cipher-command parser: when supplying a cipher command
10556 string with an "undefined" symbol (neither command nor alphanumeric
10557 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
10558 an error is flagged.
10560 Due to the strength-sorting extension, the code of the
10561 ssl_create_cipher_list() function was completely rearranged. I hope that
10562 the readability was also increased :-)
10563 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10565 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
10566 for the first serial number and places 2 in the serial number file. This
10567 avoids problems when the root CA is created with serial number zero and
10568 the first user certificate has the same issuer name and serial number
10572 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
10573 the new code. Add documentation for this stuff.
10576 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
10577 X509_*() to X509at_*() on the grounds that they don't handle X509
10578 structures and behave in an analogous way to the X509v3 functions:
10579 they shouldn't be called directly but wrapper functions should be used
10582 So we also now have some wrapper functions that call the X509at functions
10583 when passed certificate requests. (TO DO: similar things can be done with
10584 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
10585 things. Some of these need some d2i or i2d and print functionality
10586 because they handle more complex structures.)
10589 *) Add missing #ifndefs that caused missing symbols when building libssl
10590 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
10591 NO_RSA in ssl/s2*.c.
10592 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10594 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10595 has a return value which indicates the quality of the random data
10596 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10597 error queue. New function RAND_pseudo_bytes() generates output that is
10598 guaranteed to be unique but not unpredictable. RAND_add is like
10599 RAND_seed, but takes an extra argument for an entropy estimate
10600 (RAND_seed always assumes full entropy).
10603 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10604 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10605 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10606 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10607 false-positive rate of at most 2^-80 for random input.
10610 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10613 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10614 in the 0.9.5 release), this returns the chain
10615 from an X509_CTX structure with a dup of the stack and all
10616 the X509 reference counts upped: so the stack will exist
10617 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10620 Also make SSL_SESSION_print() print out the verify return
10624 *) Add manpage for the pkcs12 command. Also change the default
10625 behaviour so MAC iteration counts are used unless the new
10626 -nomaciter option is used. This improves file security and
10627 only older versions of MSIE (4.0 for example) need it.
10630 *) Honor the no-xxx Configure options when creating .DEF files.
10633 *) Add PKCS#10 attributes to field table: challengePassword,
10634 unstructuredName and unstructuredAddress. These are taken from
10635 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
10636 international characters are used.
10638 More changes to X509_ATTRIBUTE code: allow the setting of types
10639 based on strings. Remove the 'loc' parameter when adding
10640 attributes because these will be a SET OF encoding which is sorted
10644 *) Initial changes to the 'req' utility to allow request generation
10645 automation. This will allow an application to just generate a template
10646 file containing all the field values and have req construct the
10649 Initial support for X509_ATTRIBUTE handling. Stacks of these are
10650 used all over the place including certificate requests and PKCS#7
10651 structures. They are currently handled manually where necessary with
10652 some primitive wrappers for PKCS#7. The new functions behave in a
10653 manner analogous to the X509 extension functions: they allow
10654 attributes to be looked up by NID and added.
10656 Later something similar to the X509V3 code would be desirable to
10657 automatically handle the encoding, decoding and printing of the
10658 more complex types. The string types like challengePassword can
10659 be handled by the string table functions.
10661 Also modified the multi byte string table handling. Now there is
10662 a 'global mask' which masks out certain types. The table itself
10663 can use the flag STABLE_NO_MASK to ignore the mask setting: this
10664 is useful when for example there is only one permissible type
10665 (as in countryName) and using the mask might result in no valid
10669 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
10670 SSL_get_peer_finished to allow applications to obtain the latest
10671 Finished messages sent to the peer or expected from the peer,
10672 respectively. (SSL_get_peer_finished is usually the Finished message
10673 actually received from the peer, otherwise the protocol will be aborted.)
10675 As the Finished message are message digests of the complete handshake
10676 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
10677 be used for external authentication procedures when the authentication
10678 provided by SSL/TLS is not desired or is not enough.
10681 *) Enhanced support for Alpha Linux is added. Now ./config checks if
10682 the host supports BWX extension and if Compaq C is present on the
10683 $PATH. Just exploiting of the BWX extension results in 20-30%
10684 performance kick for some algorithms, e.g. DES and RC4 to mention
10685 a couple. Compaq C in turn generates ~20% faster code for MD5 and
10689 *) Add support for MS "fast SGC". This is arguably a violation of the
10690 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
10691 weak crypto and after checking the certificate is SGC a second one
10692 with strong crypto. MS SGC stops the first handshake after receiving
10693 the server certificate message and sends a second client hello. Since
10694 a server will typically do all the time consuming operations before
10695 expecting any further messages from the client (server key exchange
10696 is the most expensive) there is little difference between the two.
10698 To get OpenSSL to support MS SGC we have to permit a second client
10699 hello message after we have sent server done. In addition we have to
10700 reset the MAC if we do get this second client hello.
10703 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
10704 if a DER encoded private key is RSA or DSA traditional format. Changed
10705 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
10706 format DER encoded private key. Newer code should use PKCS#8 format which
10707 has the key type encoded in the ASN1 structure. Added DER private key
10708 support to pkcs8 application.
10711 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
10712 ciphersuites has been selected (as required by the SSL 3/TLS 1
10713 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
10714 is set, we interpret this as a request to violate the specification
10715 (the worst that can happen is a handshake failure, and 'correct'
10716 behaviour would result in a handshake failure anyway).
10719 *) In SSL_CTX_add_session, take into account that there might be multiple
10720 SSL_SESSION structures with the same session ID (e.g. when two threads
10721 concurrently obtain them from an external cache).
10722 The internal cache can handle only one SSL_SESSION with a given ID,
10723 so if there's a conflict, we now throw out the old one to achieve
10727 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
10728 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
10729 some routines that use cipher OIDs: some ciphers do not have OIDs
10730 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
10734 *) Simplify the trust setting structure and code. Now we just have
10735 two sequences of OIDs for trusted and rejected settings. These will
10736 typically have values the same as the extended key usage extension
10737 and any application specific purposes.
10739 The trust checking code now has a default behaviour: it will just
10740 check for an object with the same NID as the passed id. Functions can
10741 be provided to override either the default behaviour or the behaviour
10742 for a given id. SSL client, server and email already have functions
10743 in place for compatibility: they check the NID and also return "trusted"
10744 if the certificate is self signed.
10747 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
10748 traditional format into an EVP_PKEY structure.
10751 *) Add a password callback function PEM_cb() which either prompts for
10752 a password if usr_data is NULL or otherwise assumes it is a null
10753 terminated password. Allow passwords to be passed on command line
10754 environment or config files in a few more utilities.
10757 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
10758 keys. Add some short names for PKCS#8 PBE algorithms and allow them
10759 to be specified on the command line for the pkcs8 and pkcs12 utilities.
10760 Update documentation.
10763 *) Support for ASN1 "NULL" type. This could be handled before by using
10764 ASN1_TYPE but there wasn't any function that would try to read a NULL
10765 and produce an error if it couldn't. For compatibility we also have
10766 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
10767 don't allocate anything because they don't need to.
10770 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
10772 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
10774 *) Rebuild of the memory allocation routines used by OpenSSL code and
10775 possibly others as well. The purpose is to make an interface that
10776 provide hooks so anyone can build a separate set of allocation and
10777 deallocation routines to be used by OpenSSL, for example memory
10778 pool implementations, or something else, which was previously hard
10779 since Malloc(), Realloc() and Free() were defined as macros having
10780 the values malloc, realloc and free, respectively (except for Win32
10781 compilations). The same is provided for memory debugging code.
10782 OpenSSL already comes with functionality to find memory leaks, but
10783 this gives people a chance to debug other memory problems.
10785 With these changes, a new set of functions and macros have appeared:
10787 CRYPTO_set_mem_debug_functions() [F]
10788 CRYPTO_get_mem_debug_functions() [F]
10789 CRYPTO_dbg_set_options() [F]
10790 CRYPTO_dbg_get_options() [F]
10791 CRYPTO_malloc_debug_init() [M]
10793 The memory debug functions are NULL by default, unless the library
10794 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
10795 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
10796 gives the standard debugging functions that come with OpenSSL) or
10797 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
10798 provided by the library user) must be used. When the standard
10799 debugging functions are used, CRYPTO_dbg_set_options can be used to
10800 request additional information:
10801 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
10802 the CRYPTO_MDEBUG_xxx macro when compiling the library.
10804 Also, things like CRYPTO_set_mem_functions will always give the
10805 expected result (the new set of functions is used for allocation
10806 and deallocation) at all times, regardless of platform and compiler
10809 To finish it up, some functions that were never use in any other
10810 way than through macros have a new API and new semantic:
10812 CRYPTO_dbg_malloc()
10813 CRYPTO_dbg_realloc()
10816 All macros of value have retained their old syntax.
10817 [Richard Levitte and Bodo Moeller]
10819 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
10820 ordering of SMIMECapabilities wasn't in "strength order" and there
10821 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
10825 *) Some ASN1 types with illegal zero length encoding (INTEGER,
10826 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
10827 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
10829 *) Merge in my S/MIME library for OpenSSL. This provides a simple
10830 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
10831 functionality to handle multipart/signed properly) and a utility
10832 called 'smime' to call all this stuff. This is based on code I
10833 originally wrote for Celo who have kindly allowed it to be
10834 included in OpenSSL.
10837 *) Add variants des_set_key_checked and des_set_key_unchecked of
10838 des_set_key (aka des_key_sched). Global variable des_check_key
10839 decides which of these is called by des_set_key; this way
10840 des_check_key behaves as it always did, but applications and
10841 the library itself, which was buggy for des_check_key == 1,
10842 have a cleaner way to pick the version they need.
10845 *) New function PKCS12_newpass() which changes the password of a
10849 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
10850 dynamic mix. In both cases the ids can be used as an index into the
10851 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
10852 functions so they accept a list of the field values and the
10853 application doesn't need to directly manipulate the X509_TRUST
10857 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
10861 *) Modify the way the V3 extension code looks up extensions. This now
10862 works in a similar way to the object code: we have some "standard"
10863 extensions in a static table which is searched with OBJ_bsearch()
10864 and the application can add dynamic ones if needed. The file
10865 crypto/x509v3/ext_dat.h now has the info: this file needs to be
10866 updated whenever a new extension is added to the core code and kept
10867 in ext_nid order. There is a simple program 'tabtest.c' which checks
10868 this. New extensions are not added too often so this file can readily
10869 be maintained manually.
10871 There are two big advantages in doing things this way. The extensions
10872 can be looked up immediately and no longer need to be "added" using
10873 X509V3_add_standard_extensions(): this function now does nothing.
10874 [Side note: I get *lots* of email saying the extension code doesn't
10875 work because people forget to call this function]
10876 Also no dynamic allocation is done unless new extensions are added:
10877 so if we don't add custom extensions there is no need to call
10878 X509V3_EXT_cleanup().
10881 *) Modify enc utility's salting as follows: make salting the default. Add a
10882 magic header, so unsalted files fail gracefully instead of just decrypting
10883 to garbage. This is because not salting is a big security hole, so people
10884 should be discouraged from doing it.
10887 *) Fixes and enhancements to the 'x509' utility. It allowed a message
10888 digest to be passed on the command line but it only used this
10889 parameter when signing a certificate. Modified so all relevant
10890 operations are affected by the digest parameter including the
10891 -fingerprint and -x509toreq options. Also -x509toreq choked if a
10892 DSA key was used because it didn't fix the digest.
10895 *) Initial certificate chain verify code. Currently tests the untrusted
10896 certificates for consistency with the verify purpose (which is set
10897 when the X509_STORE_CTX structure is set up) and checks the pathlength.
10899 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
10900 this is because it will reject chains with invalid extensions whereas
10901 every previous version of OpenSSL and SSLeay made no checks at all.
10903 Trust code: checks the root CA for the relevant trust settings. Trust
10904 settings have an initial value consistent with the verify purpose: e.g.
10905 if the verify purpose is for SSL client use it expects the CA to be
10906 trusted for SSL client use. However the default value can be changed to
10907 permit custom trust settings: one example of this would be to only trust
10908 certificates from a specific "secure" set of CAs.
10910 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
10911 which should be used for version portability: especially since the
10912 verify structure is likely to change more often now.
10914 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
10915 to set them. If not set then assume SSL clients will verify SSL servers
10918 Two new options to the verify program: -untrusted allows a set of
10919 untrusted certificates to be passed in and -purpose which sets the
10920 intended purpose of the certificate. If a purpose is set then the
10921 new chain verify code is used to check extension consistency.
10924 *) Support for the authority information access extension.
10927 *) Modify RSA and DSA PEM read routines to transparently handle
10928 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
10929 public keys in a format compatible with certificate
10930 SubjectPublicKeyInfo structures. Unfortunately there were already
10931 functions called *_PublicKey_* which used various odd formats so
10932 these are retained for compatibility: however the DSA variants were
10933 never in a public release so they have been deleted. Changed dsa/rsa
10934 utilities to handle the new format: note no releases ever handled public
10935 keys so we should be OK.
10937 The primary motivation for this change is to avoid the same fiasco
10938 that dogs private keys: there are several incompatible private key
10939 formats some of which are standard and some OpenSSL specific and
10940 require various evil hacks to allow partial transparent handling and
10941 even then it doesn't work with DER formats. Given the option anything
10942 other than PKCS#8 should be dumped: but the other formats have to
10943 stay in the name of compatibility.
10945 With public keys and the benefit of hindsight one standard format
10946 is used which works with EVP_PKEY, RSA or DSA structures: though
10947 it clearly returns an error if you try to read the wrong kind of key.
10949 Added a -pubkey option to the 'x509' utility to output the public key.
10950 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
10951 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
10952 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
10953 that do the same as the EVP_PKEY_assign_*() except they up the
10954 reference count of the added key (they don't "swallow" the
10958 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
10959 CRLs would fail if the file contained no certificates or no CRLs:
10960 added a new function to read in both types and return the number
10961 read: this means that if none are read it will be an error. The
10962 DER versions of the certificate and CRL reader would always fail
10963 because it isn't possible to mix certificates and CRLs in DER format
10964 without choking one or the other routine. Changed this to just read
10965 a certificate: this is the best we can do. Also modified the code
10966 in apps/verify.c to take notice of return codes: it was previously
10967 attempting to read in certificates from NULL pointers and ignoring
10968 any errors: this is one reason why the cert and CRL reader seemed
10969 to work. It doesn't check return codes from the default certificate
10970 routines: these may well fail if the certificates aren't installed.
10973 *) Code to support otherName option in GeneralName.
10976 *) First update to verify code. Change the verify utility
10977 so it warns if it is passed a self signed certificate:
10978 for consistency with the normal behaviour. X509_verify
10979 has been modified to it will now verify a self signed
10980 certificate if *exactly* the same certificate appears
10981 in the store: it was previously impossible to trust a
10982 single self signed certificate. This means that:
10983 openssl verify ss.pem
10984 now gives a warning about a self signed certificate but
10985 openssl verify -CAfile ss.pem ss.pem
10989 *) For servers, store verify_result in SSL_SESSION data structure
10990 (and add it to external session representation).
10991 This is needed when client certificate verifications fails,
10992 but an application-provided verification callback (set by
10993 SSL_CTX_set_cert_verify_callback) allows accepting the session
10994 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
10995 but returns 1): When the session is reused, we have to set
10996 ssl->verify_result to the appropriate error code to avoid
10998 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
11000 *) Fix a bug in the new PKCS#7 code: it didn't consider the
11001 case in PKCS7_dataInit() where the signed PKCS7 structure
11002 didn't contain any existing data because it was being created.
11003 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
11005 *) Add a salt to the key derivation routines in enc.c. This
11006 forms the first 8 bytes of the encrypted file. Also add a
11007 -S option to allow a salt to be input on the command line.
11010 *) New function X509_cmp(). Oddly enough there wasn't a function
11011 to compare two certificates. We do this by working out the SHA1
11012 hash and comparing that. X509_cmp() will be needed by the trust
11016 *) SSL_get1_session() is like SSL_get_session(), but increments
11017 the reference count in the SSL_SESSION returned.
11018 [Geoff Thorpe <geoff@eu.c2.net>]
11020 *) Fix for 'req': it was adding a null to request attributes.
11021 Also change the X509_LOOKUP and X509_INFO code to handle
11022 certificate auxiliary information.
11025 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
11029 *) Add the possibility to add extra information to the memory leak
11030 detecting output, to form tracebacks, showing from where each
11031 allocation was originated: CRYPTO_push_info("constant string") adds
11032 the string plus current file name and line number to a per-thread
11033 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
11034 is like calling CYRPTO_pop_info() until the stack is empty.
11035 Also updated memory leak detection code to be multi-thread-safe.
11038 *) Add options -text and -noout to pkcs7 utility and delete the
11039 encryption options which never did anything. Update docs.
11042 *) Add options to some of the utilities to allow the pass phrase
11043 to be included on either the command line (not recommended on
11044 OSes like Unix) or read from the environment. Update the
11045 manpages and fix a few bugs.
11048 *) Add a few manpages for some of the openssl commands.
11051 *) Fix the -revoke option in ca. It was freeing up memory twice,
11052 leaking and not finding already revoked certificates.
11055 *) Extensive changes to support certificate auxiliary information.
11056 This involves the use of X509_CERT_AUX structure and X509_AUX
11057 functions. An X509_AUX function such as PEM_read_X509_AUX()
11058 can still read in a certificate file in the usual way but it
11059 will also read in any additional "auxiliary information". By
11060 doing things this way a fair degree of compatibility can be
11061 retained: existing certificates can have this information added
11062 using the new 'x509' options.
11064 Current auxiliary information includes an "alias" and some trust
11065 settings. The trust settings will ultimately be used in enhanced
11066 certificate chain verification routines: currently a certificate
11067 can only be trusted if it is self signed and then it is trusted
11071 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
11072 The problem was that one of the replacement routines had not been working
11073 since SSLeay releases. For now the offending routine has been replaced
11074 with non-optimised assembler. Even so, this now gives around 95%
11075 performance improvement for 1024 bit RSA signs.
11078 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
11079 handling. Most clients have the effective key size in bits equal to
11080 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
11081 A few however don't do this and instead use the size of the decrypted key
11082 to determine the RC2 key length and the AlgorithmIdentifier to determine
11083 the effective key length. In this case the effective key length can still
11084 be 40 bits but the key length can be 168 bits for example. This is fixed
11085 by manually forcing an RC2 key into the EVP_PKEY structure because the
11086 EVP code can't currently handle unusual RC2 key sizes: it always assumes
11087 the key length and effective key length are equal.
11090 *) Add a bunch of functions that should simplify the creation of
11091 X509_NAME structures. Now you should be able to do:
11092 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
11093 and have it automatically work out the correct field type and fill in
11094 the structures. The more adventurous can try:
11095 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
11096 and it will (hopefully) work out the correct multibyte encoding.
11099 *) Change the 'req' utility to use the new field handling and multibyte
11100 copy routines. Before the DN field creation was handled in an ad hoc
11101 way in req, ca, and x509 which was rather broken and didn't support
11102 BMPStrings or UTF8Strings. Since some software doesn't implement
11103 BMPStrings or UTF8Strings yet, they can be enabled using the config file
11104 using the dirstring_type option. See the new comment in the default
11105 openssl.cnf for more info.
11108 *) Make crypto/rand/md_rand.c more robust:
11109 - Assure unique random numbers after fork().
11110 - Make sure that concurrent threads access the global counter and
11111 md serializably so that we never lose entropy in them
11112 or use exactly the same state in multiple threads.
11113 Access to the large state is not always serializable because
11114 the additional locking could be a performance killer, and
11115 md should be large enough anyway.
11118 *) New file apps/app_rand.c with commonly needed functionality
11119 for handling the random seed file.
11121 Use the random seed file in some applications that previously did not:
11123 dsaparam -genkey (which also ignored its '-rand' option),
11126 x509 (when signing).
11127 Except on systems with /dev/urandom, it is crucial to have a random
11128 seed file at least for key creation, DSA signing, and for DH exchanges;
11129 for RSA signatures we could do without one.
11131 gendh and gendsa (unlike genrsa) used to read only the first byte
11132 of each file listed in the '-rand' option. The function as previously
11133 found in genrsa is now in app_rand.c and is used by all programs
11134 that support '-rand'.
11137 *) In RAND_write_file, use mode 0600 for creating files;
11138 don't just chmod when it may be too late.
11141 *) Report an error from X509_STORE_load_locations
11142 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
11145 *) New function ASN1_mbstring_copy() this copies a string in either
11146 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
11147 into an ASN1_STRING type. A mask of permissible types is passed
11148 and it chooses the "minimal" type to use or an error if not type
11152 *) Add function equivalents to the various macros in asn1.h. The old
11153 macros are retained with an M_ prefix. Code inside the library can
11154 use the M_ macros. External code (including the openssl utility)
11155 should *NOT* in order to be "shared library friendly".
11158 *) Add various functions that can check a certificate's extensions
11159 to see if it usable for various purposes such as SSL client,
11160 server or S/MIME and CAs of these types. This is currently
11161 VERY EXPERIMENTAL but will ultimately be used for certificate chain
11162 verification. Also added a -purpose flag to x509 utility to
11163 print out all the purposes.
11166 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
11170 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
11171 for, obtain and decode and extension and obtain its critical flag.
11172 This allows all the necessary extension code to be handled in a
11173 single function call.
11176 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
11177 platforms. See crypto/rc4/rc4_enc.c for further details.
11180 *) New -noout option to asn1parse. This causes no output to be produced
11181 its main use is when combined with -strparse and -out to extract data
11182 from a file (which may not be in ASN.1 format).
11185 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
11186 when producing the local key id.
11187 [Richard Levitte <levitte@stacken.kth.se>]
11189 *) New option -dhparam in s_server. This allows a DH parameter file to be
11190 stated explicitly. If it is not stated then it tries the first server
11191 certificate file. The previous behaviour hard coded the filename
11195 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
11196 a public key to be input or output. For example:
11197 openssl rsa -in key.pem -pubout -out pubkey.pem
11198 Also added necessary DSA public key functions to handle this.
11201 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
11202 in the message. This was handled by allowing
11203 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
11204 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
11206 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
11207 to the end of the strings whereas this didn't. This would cause problems
11208 if strings read with d2i_ASN1_bytes() were later modified.
11209 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
11211 *) Fix for base64 decode bug. When a base64 bio reads only one line of
11212 data and it contains EOF it will end up returning an error. This is
11213 caused by input 46 bytes long. The cause is due to the way base64
11214 BIOs find the start of base64 encoded data. They do this by trying a
11215 trial decode on each line until they find one that works. When they
11216 do a flag is set and it starts again knowing it can pass all the
11217 data directly through the decoder. Unfortunately it doesn't reset
11218 the context it uses. This means that if EOF is reached an attempt
11219 is made to pass two EOFs through the context and this causes the
11220 resulting error. This can also cause other problems as well. As is
11221 usual with these problems it takes *ages* to find and the fix is
11222 trivial: move one line.
11223 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
11225 *) Ugly workaround to get s_client and s_server working under Windows. The
11226 old code wouldn't work because it needed to select() on sockets and the
11227 tty (for keypresses and to see if data could be written). Win32 only
11228 supports select() on sockets so we select() with a 1s timeout on the
11229 sockets and then see if any characters are waiting to be read, if none
11230 are present then we retry, we also assume we can always write data to
11231 the tty. This isn't nice because the code then blocks until we've
11232 received a complete line of data and it is effectively polling the
11233 keyboard at 1s intervals: however it's quite a bit better than not
11234 working at all :-) A dedicated Windows application might handle this
11235 with an event loop for example.
11238 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
11239 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
11240 will be called when RSA_sign() and RSA_verify() are used. This is useful
11241 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
11242 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
11243 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
11244 This necessitated the support of an extra signature type NID_md5_sha1
11245 for SSL signatures and modifications to the SSL library to use it instead
11246 of calling RSA_public_decrypt() and RSA_private_encrypt().
11249 *) Add new -verify -CAfile and -CApath options to the crl program, these
11250 will lookup a CRL issuers certificate and verify the signature in a
11251 similar way to the verify program. Tidy up the crl program so it
11252 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
11253 less strict. It will now permit CRL extensions even if it is not
11254 a V2 CRL: this will allow it to tolerate some broken CRLs.
11257 *) Initialize all non-automatic variables each time one of the openssl
11258 sub-programs is started (this is necessary as they may be started
11259 multiple times from the "OpenSSL>" prompt).
11260 [Lennart Bang, Bodo Moeller]
11262 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
11263 removing all other RSA functionality (this is what NO_RSA does). This
11264 is so (for example) those in the US can disable those operations covered
11265 by the RSA patent while allowing storage and parsing of RSA keys and RSA
11269 *) Non-copying interface to BIO pairs.
11270 (still largely untested)
11273 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
11274 ASCII string. This was handled independently in various places before.
11277 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
11278 UTF8 strings a character at a time.
11281 *) Use client_version from client hello to select the protocol
11282 (s23_srvr.c) and for RSA client key exchange verification
11283 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
11286 *) Add various utility functions to handle SPKACs, these were previously
11287 handled by poking round in the structure internals. Added new function
11288 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
11289 print, verify and generate SPKACs. Based on an original idea from
11290 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
11293 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
11296 *) Allow the config file extension section to be overwritten on the
11297 command line. Based on an original idea from Massimiliano Pala
11298 <madwolf@comune.modena.it>. The new option is called -extensions
11299 and can be applied to ca, req and x509. Also -reqexts to override
11300 the request extensions in req and -crlexts to override the crl extensions
11304 *) Add new feature to the SPKAC handling in ca. Now you can include
11305 the same field multiple times by preceding it by "XXXX." for example:
11308 this is the same syntax as used in the req config file.
11311 *) Allow certificate extensions to be added to certificate requests. These
11312 are specified in a 'req_extensions' option of the req section of the
11313 config file. They can be printed out with the -text option to req but
11314 are otherwise ignored at present.
11317 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
11318 data read consists of only the final block it would not decrypted because
11319 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
11320 A misplaced 'break' also meant the decrypted final block might not be
11321 copied until the next read.
11324 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
11325 a few extra parameters to the DH structure: these will be useful if
11326 for example we want the value of 'q' or implement X9.42 DH.
11329 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
11330 provides hooks that allow the default DSA functions or functions on a
11331 "per key" basis to be replaced. This allows hardware acceleration and
11332 hardware key storage to be handled without major modification to the
11333 library. Also added low level modexp hooks and CRYPTO_EX structure and
11334 associated functions.
11337 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
11338 as "read only": it can't be written to and the buffer it points to will
11339 not be freed. Reading from a read only BIO is much more efficient than
11340 a normal memory BIO. This was added because there are several times when
11341 an area of memory needs to be read from a BIO. The previous method was
11342 to create a memory BIO and write the data to it, this results in two
11343 copies of the data and an O(n^2) reading algorithm. There is a new
11344 function BIO_new_mem_buf() which creates a read only memory BIO from
11345 an area of memory. Also modified the PKCS#7 routines to use read only
11349 *) Bugfix: ssl23_get_client_hello did not work properly when called in
11350 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
11351 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
11352 but a retry condition occurred while trying to read the rest.
11355 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
11356 NID_pkcs7_encrypted by default: this was wrong since this should almost
11357 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
11358 the encrypted data type: this is a more sensible place to put it and it
11359 allows the PKCS#12 code to be tidied up that duplicated this
11363 *) Changed obj_dat.pl script so it takes its input and output files on
11364 the command line. This should avoid shell escape redirection problems
11368 *) Initial support for certificate extension requests, these are included
11369 in things like Xenroll certificate requests. Included functions to allow
11370 extensions to be obtained and added.
11373 *) -crlf option to s_client and s_server for sending newlines as
11374 CRLF (as required by many protocols).
11377 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
11379 *) Install libRSAglue.a when OpenSSL is built with RSAref.
11380 [Ralf S. Engelschall]
11382 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
11383 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
11385 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
11389 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
11390 DH parameters/keys (q is lost during that conversion, but the resulting
11391 DH parameters contain its length).
11393 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
11394 much faster than DH_generate_parameters (which creates parameters
11395 where p = 2*q + 1), and also the smaller q makes DH computations
11396 much more efficient (160-bit exponentiation instead of 1024-bit
11397 exponentiation); so this provides a convenient way to support DHE
11398 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
11399 utter importance to use
11400 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11402 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
11403 when such DH parameters are used, because otherwise small subgroup
11404 attacks may become possible!
11407 *) Avoid memory leak in i2d_DHparams.
11410 *) Allow the -k option to be used more than once in the enc program:
11411 this allows the same encrypted message to be read by multiple recipients.
11414 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11415 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11416 it will always use the numerical form of the OID, even if it has a short
11420 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11421 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11422 otherwise bn_mod_exp was called. In the case of hardware keys for example
11423 no private key components need be present and it might store extra data
11424 in the RSA structure, which cannot be accessed from bn_mod_exp.
11425 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11426 private key operations.
11429 *) Added support for SPARC Linux.
11432 *) pem_password_cb function type incompatibly changed from
11433 typedef int pem_password_cb(char *buf, int size, int rwflag);
11435 ....(char *buf, int size, int rwflag, void *userdata);
11436 so that applications can pass data to their callbacks:
11437 The PEM[_ASN1]_{read,write}... functions and macros now take an
11438 additional void * argument, which is just handed through whenever
11439 the password callback is called.
11440 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11442 New function SSL_CTX_set_default_passwd_cb_userdata.
11444 Compatibility note: As many C implementations push function arguments
11445 onto the stack in reverse order, the new library version is likely to
11446 interoperate with programs that have been compiled with the old
11447 pem_password_cb definition (PEM_whatever takes some data that
11448 happens to be on the stack as its last argument, and the callback
11449 just ignores this garbage); but there is no guarantee whatsoever that
11452 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11453 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11454 problems not only on Windows, but also on some Unix platforms.
11455 To avoid problematic command lines, these definitions are now in an
11456 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11457 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11460 *) MIPS III/IV assembler module is reimplemented.
11463 *) More DES library cleanups: remove references to srand/rand and
11464 delete an unused file.
11467 *) Add support for the free Netwide assembler (NASM) under Win32,
11468 since not many people have MASM (ml) and it can be hard to obtain.
11469 This is currently experimental but it seems to work OK and pass all
11470 the tests. Check out INSTALL.W32 for info.
11473 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
11474 without temporary keys kept an extra copy of the server key,
11475 and connections with temporary keys did not free everything in case
11479 *) New function RSA_check_key and new openssl rsa option -check
11480 for verifying the consistency of RSA keys.
11481 [Ulf Moeller, Bodo Moeller]
11483 *) Various changes to make Win32 compile work:
11484 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
11485 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
11486 comparison" warnings.
11487 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
11490 *) Add a debugging option to PKCS#5 v2 key generation function: when
11491 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
11492 derived keys are printed to stderr.
11495 *) Copy the flags in ASN1_STRING_dup().
11496 [Roman E. Pavlov <pre@mo.msk.ru>]
11498 *) The x509 application mishandled signing requests containing DSA
11499 keys when the signing key was also DSA and the parameters didn't match.
11501 It was supposed to omit the parameters when they matched the signing key:
11502 the verifying software was then supposed to automatically use the CA's
11503 parameters if they were absent from the end user certificate.
11505 Omitting parameters is no longer recommended. The test was also
11506 the wrong way round! This was probably due to unusual behaviour in
11507 EVP_cmp_parameters() which returns 1 if the parameters match.
11508 This meant that parameters were omitted when they *didn't* match and
11509 the certificate was useless. Certificates signed with 'ca' didn't have
11511 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
11513 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
11514 The interface is as follows:
11515 Applications can use
11516 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
11517 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
11518 "off" is now the default.
11519 The library internally uses
11520 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
11521 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
11522 to disable memory-checking temporarily.
11524 Some inconsistent states that previously were possible (and were
11525 even the default) are now avoided.
11527 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
11528 with each memory chunk allocated; this is occasionally more helpful
11529 than just having a counter.
11531 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
11533 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
11537 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
11538 which largely parallels "options", but is for changing API behaviour,
11539 whereas "options" are about protocol behaviour.
11540 Initial "mode" flags are:
11542 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
11543 a single record has been written.
11544 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
11545 retries use the same buffer location.
11546 (But all of the contents must be
11550 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
11553 *) Fix problems with no-hmac etc.
11554 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
11556 *) New functions RSA_get_default_method(), RSA_set_method() and
11557 RSA_get_method(). These allows replacement of RSA_METHODs without having
11558 to mess around with the internals of an RSA structure.
11561 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
11562 Also really enable memory leak checks in openssl.c and in some
11564 [Chad C. Mulligan, Bodo Moeller]
11566 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
11567 up the length of negative integers. This has now been simplified to just
11568 store the length when it is first determined and use it later, rather
11569 than trying to keep track of where data is copied and updating it to
11571 [Steve Henson, reported by Brien Wheeler
11572 <bwheeler@authentica-security.com>]
11574 *) Add a new function PKCS7_signatureVerify. This allows the verification
11575 of a PKCS#7 signature but with the signing certificate passed to the
11576 function itself. This contrasts with PKCS7_dataVerify which assumes the
11577 certificate is present in the PKCS#7 structure. This isn't always the
11578 case: certificates can be omitted from a PKCS#7 structure and be
11579 distributed by "out of band" means (such as a certificate database).
11582 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
11583 function prototypes in pem.h, also change util/mkdef.pl to add the
11584 necessary function names.
11587 *) mk1mf.pl (used by Windows builds) did not properly read the
11588 options set by Configure in the top level Makefile, and Configure
11589 was not even able to write more than one option correctly.
11590 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
11593 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11594 file to be loaded from a BIO or FILE pointer. The BIO version will
11595 for example allow memory BIOs to contain config info.
11598 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11599 Whoever hopes to achieve shared-library compatibility across versions
11600 must use this, not the compile-time macro.
11601 (Exercise 0.9.4: Which is the minimum library version required by
11603 Note: All this applies only to multi-threaded programs, others don't
11607 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11608 through a BIO pair triggered the default case, i.e.
11609 SSLerr(...,SSL_R_UNKNOWN_STATE).
11612 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11613 can use the SSL library even if none of the specific BIOs is
11617 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11618 for the encoded length.
11619 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11621 *) Add initial documentation of the X509V3 functions.
11624 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
11625 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
11626 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
11627 secure PKCS#8 private key format with a high iteration count.
11630 *) Fix determination of Perl interpreter: A perl or perl5
11631 _directory_ in $PATH was also accepted as the interpreter.
11632 [Ralf S. Engelschall]
11634 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
11635 wrong with it but it was very old and did things like calling
11636 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
11637 unusual formatting.
11640 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
11641 to use the new extension code.
11644 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
11645 with macros. This should make it easier to change their form, add extra
11646 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
11650 *) Add to configuration table a new entry that can specify an alternative
11651 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
11652 according to Mark Crispin <MRC@Panda.COM>.
11656 *) DES CBC did not update the IV. Weird.
11659 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
11660 Changing the behaviour of the former might break existing programs --
11661 where IV updating is needed, des_ncbc_encrypt can be used.
11664 *) When bntest is run from "make test" it drives bc to check its
11665 calculations, as well as internally checking them. If an internal check
11666 fails, it needs to cause bc to give a non-zero result or make test carries
11667 on without noticing the failure. Fixed.
11670 *) DES library cleanups.
11673 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
11674 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
11675 ciphers. NOTE: although the key derivation function has been verified
11676 against some published test vectors it has not been extensively tested
11677 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
11681 *) Instead of "mkdir -p", which is not fully portable, use new
11682 Perl script "util/mkdir-p.pl".
11685 *) Rewrite the way password based encryption (PBE) is handled. It used to
11686 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
11687 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
11688 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
11689 the 'parameter' field of the AlgorithmIdentifier is passed to the
11690 underlying key generation function so it must do its own ASN1 parsing.
11691 This has also changed the EVP_PBE_CipherInit() function which now has a
11692 'parameter' argument instead of literal salt and iteration count values
11693 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
11696 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
11697 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
11698 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
11699 KEY" because this clashed with PKCS#8 unencrypted string. Since this
11700 value was just used as a "magic string" and not used directly its
11701 value doesn't matter.
11704 *) Introduce some semblance of const correctness to BN. Shame C doesn't
11708 *) "linux-sparc64" configuration (ultrapenguin).
11709 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
11710 "linux-sparc" configuration.
11711 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
11713 *) config now generates no-xxx options for missing ciphers.
11716 *) Support the EBCDIC character set (work in progress).
11717 File ebcdic.c not yet included because it has a different license.
11718 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11720 *) Support BS2000/OSD-POSIX.
11721 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11723 *) Make callbacks for key generation use void * instead of char *.
11726 *) Make S/MIME samples compile (not yet tested).
11729 *) Additional typesafe stacks.
11732 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
11736 Changes between 0.9.3 and 0.9.3a [29 May 1999]
11738 *) New configuration variant "sco5-gcc".
11740 *) Updated some demos.
11741 [Sean O Riordain, Wade Scholine]
11743 *) Add missing BIO_free at exit of pkcs12 application.
11746 *) Fix memory leak in conf.c.
11749 *) Updates for Win32 to assembler version of MD5.
11752 *) Set #! path to perl in apps/der_chop to where we found it
11753 instead of using a fixed path.
11756 *) SHA library changes for irix64-mips4-cc.
11759 *) Improvements for VMS support.
11763 Changes between 0.9.2b and 0.9.3 [24 May 1999]
11765 *) Bignum library bug fix. IRIX 6 passes "make test" now!
11766 This also avoids the problems with SC4.2 and unpatched SC5.
11767 [Andy Polyakov <appro@fy.chalmers.se>]
11769 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
11770 These are required because of the typesafe stack would otherwise break
11771 existing code. If old code used a structure member which used to be STACK
11772 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
11773 sk_num or sk_value it would produce an error because the num, data members
11774 are not present in STACK_OF. Now it just produces a warning. sk_set
11775 replaces the old method of assigning a value to sk_value
11776 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
11777 that does this will no longer work (and should use sk_set instead) but
11778 this could be regarded as a "questionable" behaviour anyway.
11781 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
11782 correctly handle encrypted S/MIME data.
11785 *) Change type of various DES function arguments from des_cblock
11786 (which means, in function argument declarations, pointer to char)
11787 to des_cblock * (meaning pointer to array with 8 char elements),
11788 which allows the compiler to do more typechecking; it was like
11789 that back in SSLeay, but with lots of ugly casts.
11791 Introduce new type const_des_cblock.
11794 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
11795 problems: find RecipientInfo structure that matches recipient certificate
11796 and initialise the ASN1 structures properly based on passed cipher.
11799 *) Belatedly make the BN tests actually check the results.
11802 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
11803 to and from BNs: it was completely broken. New compilation option
11804 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
11805 key elements as negative integers.
11808 *) Reorganize and speed up MD5.
11809 [Andy Polyakov <appro@fy.chalmers.se>]
11812 [Richard Levitte <richard@levitte.org>]
11814 *) New option -out to asn1parse to allow the parsed structure to be
11815 output to a file. This is most useful when combined with the -strparse
11816 option to examine the output of things like OCTET STRINGS.
11819 *) Make SSL library a little more fool-proof by not requiring any longer
11820 that SSL_set_{accept,connect}_state be called before
11821 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
11822 in many applications because usually everything *appeared* to work as
11823 intended anyway -- now it really works as intended).
11826 *) Move openssl.cnf out of lib/.
11829 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
11830 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
11831 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
11832 [Ralf S. Engelschall]
11834 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
11835 handle PKCS#7 enveloped data properly.
11836 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
11838 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
11839 copying pointers. The cert_st handling is changed by this in
11840 various ways (and thus what used to be known as ctx->default_cert
11841 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
11842 any longer when s->cert does not give us what we need).
11843 ssl_cert_instantiate becomes obsolete by this change.
11844 As soon as we've got the new code right (possibly it already is?),
11845 we have solved a couple of bugs of the earlier code where s->cert
11846 was used as if it could not have been shared with other SSL structures.
11848 Note that using the SSL API in certain dirty ways now will result
11849 in different behaviour than observed with earlier library versions:
11850 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
11851 does not influence s as it used to.
11853 In order to clean up things more thoroughly, inside SSL_SESSION
11854 we don't use CERT any longer, but a new structure SESS_CERT
11855 that holds per-session data (if available); currently, this is
11856 the peer's certificate chain and, for clients, the server's certificate
11857 and temporary key. CERT holds only those values that can have
11858 meaningful defaults in an SSL_CTX.
11861 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
11862 from the internal representation. Various PKCS#7 fixes: remove some
11863 evil casts and set the enc_dig_alg field properly based on the signing
11867 *) Allow PKCS#12 password to be set from the command line or the
11868 environment. Let 'ca' get its config file name from the environment
11869 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
11873 *) Allow certificate policies extension to use an IA5STRING for the
11874 organization field. This is contrary to the PKIX definition but
11875 VeriSign uses it and IE5 only recognises this form. Document 'x509'
11879 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
11880 without disallowing inline assembler and the like for non-pedantic builds.
11883 *) Support Borland C++ builder.
11884 [Janez Jere <jj@void.si>, modified by Ulf Möller]
11886 *) Support Mingw32.
11889 *) SHA-1 cleanups and performance enhancements.
11890 [Andy Polyakov <appro@fy.chalmers.se>]
11892 *) Sparc v8plus assembler for the bignum library.
11893 [Andy Polyakov <appro@fy.chalmers.se>]
11895 *) Accept any -xxx and +xxx compiler options in Configure.
11898 *) Update HPUX configuration.
11901 *) Add missing sk_<type>_unshift() function to safestack.h
11902 [Ralf S. Engelschall]
11904 *) New function SSL_CTX_use_certificate_chain_file that sets the
11905 "extra_cert"s in addition to the certificate. (This makes sense
11906 only for "PEM" format files, as chains as a whole are not
11910 *) Support verify_depth from the SSL API.
11911 x509_vfy.c had what can be considered an off-by-one-error:
11912 Its depth (which was not part of the external interface)
11913 was actually counting the number of certificates in a chain;
11914 now it really counts the depth.
11917 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
11918 instead of X509err, which often resulted in confusing error
11919 messages since the error codes are not globally unique
11920 (e.g. an alleged error in ssl3_accept when a certificate
11921 didn't match the private key).
11923 *) New function SSL_CTX_set_session_id_context that allows to set a default
11924 value (so that you don't need SSL_set_session_id_context for each
11925 connection using the SSL_CTX).
11928 *) OAEP decoding bug fix.
11931 *) Support INSTALL_PREFIX for package builders, as proposed by
11935 *) New Configure options "threads" and "no-threads". For systems
11936 where the proper compiler options are known (currently Solaris
11937 and Linux), "threads" is the default.
11940 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
11943 *) Install various scripts to $(OPENSSLDIR)/misc, not to
11944 $(INSTALLTOP)/bin -- they shouldn't clutter directories
11945 such as /usr/local/bin.
11948 *) "make linux-shared" to build shared libraries.
11949 [Niels Poppe <niels@netbox.org>]
11951 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
11954 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
11955 extension adding in x509 utility.
11958 *) Remove NOPROTO sections and error code comments.
11961 *) Partial rewrite of the DEF file generator to now parse the ANSI
11965 *) New Configure options --prefix=DIR and --openssldir=DIR.
11968 *) Complete rewrite of the error code script(s). It is all now handled
11969 by one script at the top level which handles error code gathering,
11970 header rewriting and C source file generation. It should be much better
11971 than the old method: it now uses a modified version of Ulf's parser to
11972 read the ANSI prototypes in all header files (thus the old K&R definitions
11973 aren't needed for error creation any more) and do a better job of
11974 translating function codes into names. The old 'ASN1 error code imbedded
11975 in a comment' is no longer necessary and it doesn't use .err files which
11976 have now been deleted. Also the error code call doesn't have to appear all
11977 on one line (which resulted in some large lines...).
11980 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
11983 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
11984 0 (which usually indicates a closed connection), but continue reading.
11987 *) Fix some race conditions.
11990 *) Add support for CRL distribution points extension. Add Certificate
11991 Policies and CRL distribution points documentation.
11994 *) Move the autogenerated header file parts to crypto/opensslconf.h.
11997 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
11998 8 of keying material. Merlin has also confirmed interop with this fix
11999 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
12000 [Merlin Hughes <merlin@baltimore.ie>]
12002 *) Fix lots of warnings.
12003 [Richard Levitte <levitte@stacken.kth.se>]
12005 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
12006 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
12007 [Richard Levitte <levitte@stacken.kth.se>]
12009 *) Fix problems with sizeof(long) == 8.
12010 [Andy Polyakov <appro@fy.chalmers.se>]
12012 *) Change functions to ANSI C.
12015 *) Fix typos in error codes.
12016 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
12018 *) Remove defunct assembler files from Configure.
12021 *) SPARC v8 assembler BIGNUM implementation.
12022 [Andy Polyakov <appro@fy.chalmers.se>]
12024 *) Support for Certificate Policies extension: both print and set.
12025 Various additions to support the r2i method this uses.
12028 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
12029 return a const string when you are expecting an allocated buffer.
12032 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
12033 types DirectoryString and DisplayText.
12036 *) Add code to allow r2i extensions to access the configuration database,
12037 add an LHASH database driver and add several ctx helper functions.
12040 *) Fix an evil bug in bn_expand2() which caused various BN functions to
12041 fail when they extended the size of a BIGNUM.
12044 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
12045 support typesafe stack.
12048 *) Fix typo in SSL_[gs]et_options().
12049 [Nils Frostberg <nils@medcom.se>]
12051 *) Delete various functions and files that belonged to the (now obsolete)
12052 old X509V3 handling code.
12055 *) New Configure option "rsaref".
12058 *) Don't auto-generate pem.h.
12061 *) Introduce type-safe ASN.1 SETs.
12064 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
12065 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
12067 *) Introduce type-safe STACKs. This will almost certainly break lots of code
12068 that links with OpenSSL (well at least cause lots of warnings), but fear
12069 not: the conversion is trivial, and it eliminates loads of evil casts. A
12070 few STACKed things have been converted already. Feel free to convert more.
12071 In the fullness of time, I'll do away with the STACK type altogether.
12074 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
12075 specified in <certfile> by updating the entry in the index.txt file.
12076 This way one no longer has to edit the index.txt file manually for
12077 revoking a certificate. The -revoke option does the gory details now.
12078 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
12080 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
12081 `-text' option at all and this way the `-noout -text' combination was
12082 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
12083 [Ralf S. Engelschall]
12085 *) Make sure a corresponding plain text error message exists for the
12086 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
12087 verify callback function determined that a certificate was revoked.
12088 [Ralf S. Engelschall]
12090 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
12091 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
12092 all available ciphers including rc5, which was forgotten until now.
12093 In order to let the testing shell script know which algorithms
12094 are available, a new (up to now undocumented) command
12095 "openssl list-cipher-commands" is used.
12098 *) Bugfix: s_client occasionally would sleep in select() when
12099 it should have checked SSL_pending() first.
12102 *) New functions DSA_do_sign and DSA_do_verify to provide access to
12103 the raw DSA values prior to ASN.1 encoding.
12106 *) Tweaks to Configure
12107 [Niels Poppe <niels@netbox.org>]
12109 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
12113 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
12116 *) New config option to avoid instructions that are illegal on the 80386.
12117 The default code is faster, but requires at least a 486.
12120 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
12121 SSL2_SERVER_VERSION (not used at all) macros, which are now the
12122 same as SSL2_VERSION anyway.
12125 *) New "-showcerts" option for s_client.
12128 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
12129 application. Various cleanups and fixes.
12132 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
12133 modify error routines to work internally. Add error codes and PBE init
12134 to library startup routines.
12137 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
12138 packing functions to asn1 and evp. Changed function names and error
12139 codes along the way.
12142 *) PKCS12 integration: and so it begins... First of several patches to
12143 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
12144 objects to objects.h
12147 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
12148 and display support for Thawte strong extranet extension.
12151 *) Add LinuxPPC support.
12152 [Jeff Dubrule <igor@pobox.org>]
12154 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
12155 bn_div_words in alpha.s.
12156 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
12158 *) Make sure the RSA OAEP test is skipped under -DRSAref because
12159 OAEP isn't supported when OpenSSL is built with RSAref.
12160 [Ulf Moeller <ulf@fitug.de>]
12162 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
12163 so they no longer are missing under -DNOPROTO.
12164 [Soren S. Jorvang <soren@t.dk>]
12167 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
12169 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
12170 doesn't work when the session is reused. Coming soon!
12173 *) Fix a security hole, that allows sessions to be reused in the wrong
12174 context thus bypassing client cert protection! All software that uses
12175 client certs and session caches in multiple contexts NEEDS PATCHING to
12176 allow session reuse! A fuller solution is in the works.
12177 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
12179 *) Some more source tree cleanups (removed obsolete files
12180 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
12181 permission on "config" script to be executable) and a fix for the INSTALL
12183 [Ulf Moeller <ulf@fitug.de>]
12185 *) Remove some legacy and erroneous uses of malloc, free instead of
12187 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
12189 *) Make rsa_oaep_test return non-zero on error.
12190 [Ulf Moeller <ulf@fitug.de>]
12192 *) Add support for native Solaris shared libraries. Configure
12193 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
12194 if someone would make that last step automatic.
12195 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
12197 *) ctx_size was not built with the right compiler during "make links". Fixed.
12200 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
12201 except NULL ciphers". This means the default cipher list will no longer
12202 enable NULL ciphers. They need to be specifically enabled e.g. with
12203 the string "DEFAULT:eNULL".
12206 *) Fix to RSA private encryption routines: if p < q then it would
12207 occasionally produce an invalid result. This will only happen with
12208 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
12211 *) Be less restrictive and allow also `perl util/perlpath.pl
12212 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
12213 because this way one can also use an interpreter named `perl5' (which is
12214 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
12215 installed as `perl').
12216 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12218 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
12219 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12221 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
12222 advapi32.lib to Win32 build and change the pem test comparison
12223 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
12224 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
12225 and crypto/des/ede_cbcm_enc.c.
12228 *) DES quad checksum was broken on big-endian architectures. Fixed.
12231 *) Comment out two functions in bio.h that aren't implemented. Fix up the
12232 Win32 test batch file so it (might) work again. The Win32 test batch file
12233 is horrible: I feel ill....
12236 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
12237 in e_os.h. Audit of header files to check ANSI and non ANSI
12238 sections: 10 functions were absent from non ANSI section and not exported
12239 from Windows DLLs. Fixed up libeay.num for new functions.
12242 *) Make `openssl version' output lines consistent.
12243 [Ralf S. Engelschall]
12245 *) Fix Win32 symbol export lists for BIO functions: Added
12246 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
12247 to ms/libeay{16,32}.def.
12248 [Ralf S. Engelschall]
12250 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
12251 fine under Unix and passes some trivial tests I've now added. But the
12252 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
12253 added to make sure no one expects that this stuff really works in the
12254 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
12255 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
12257 [Ralf S. Engelschall]
12259 *) Fix the generation of two part addresses in perl.
12260 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
12262 *) Add config entry for Linux on MIPS.
12263 [John Tobey <jtobey@channel1.com>]
12265 *) Make links whenever Configure is run, unless we are on Windoze.
12268 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
12269 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
12273 *) Add a useful kludge to allow package maintainers to specify compiler and
12274 other platforms details on the command line without having to patch the
12275 Configure script everytime: One now can use ``perl Configure
12276 <id>:<details>'', i.e. platform ids are allowed to have details appended
12277 to them (separated by colons). This is treated as there would be a static
12278 pre-configured entry in Configure's %table under key <id> with value
12279 <details> and ``perl Configure <id>'' is called. So, when you want to
12280 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
12281 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
12282 now, which overrides the FreeBSD-elf entry on-the-fly.
12283 [Ralf S. Engelschall]
12285 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
12288 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
12289 on the `perl Configure ...' command line. This way one can compile
12290 OpenSSL libraries with Position Independent Code (PIC) which is needed
12291 for linking it into DSOs.
12292 [Ralf S. Engelschall]
12294 *) Remarkably, export ciphers were totally broken and no-one had noticed!
12298 *) Cleaned up the LICENSE document: The official contact for any license
12299 questions now is the OpenSSL core team under openssl-core@openssl.org.
12300 And add a paragraph about the dual-license situation to make sure people
12301 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
12302 to the OpenSSL toolkit.
12303 [Ralf S. Engelschall]
12305 *) General source tree makefile cleanups: Made `making xxx in yyy...'
12306 display consistent in the source tree and replaced `/bin/rm' by `rm'.
12307 Additionally cleaned up the `make links' target: Remove unnecessary
12308 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
12309 to speed processing and no longer clutter the display with confusing
12310 stuff. Instead only the actually done links are displayed.
12311 [Ralf S. Engelschall]
12313 *) Permit null encryption ciphersuites, used for authentication only. It used
12314 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
12315 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
12319 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
12320 signed attributes when verifying signatures (this would break them),
12321 the detached data encoding was wrong and public keys obtained using
12322 X509_get_pubkey() weren't freed.
12325 *) Add text documentation for the BUFFER functions. Also added a work around
12326 to a Win95 console bug. This was triggered by the password read stuff: the
12327 last character typed gets carried over to the next fread(). If you were
12328 generating a new cert request using 'req' for example then the last
12329 character of the passphrase would be CR which would then enter the first
12333 *) Added the new `Includes OpenSSL Cryptography Software' button as
12334 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
12335 button and can be used by applications based on OpenSSL to show the
12336 relationship to the OpenSSL project.
12337 [Ralf S. Engelschall]
12339 *) Remove confusing variables in function signatures in files
12340 ssl/ssl_lib.c and ssl/ssl.h.
12341 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12343 *) Don't install bss_file.c under PREFIX/include/
12344 [Lennart Bong <lob@kulthea.stacken.kth.se>]
12346 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
12347 functions that return function pointers and has support for NT specific
12348 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
12349 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
12350 unsigned to signed types: this was killing the Win32 compile.
12353 *) Add new certificate file to stack functions,
12354 SSL_add_dir_cert_subjects_to_stack() and
12355 SSL_add_file_cert_subjects_to_stack(). These largely supplant
12356 SSL_load_client_CA_file(), and can be used to add multiple certs easily
12357 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
12358 This means that Apache-SSL and similar packages don't have to mess around
12359 to add as many CAs as they want to the preferred list.
12362 *) Experiment with doxygen documentation. Currently only partially applied to
12364 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
12365 openssl.doxy as the configuration file.
12368 *) Get rid of remaining C++-style comments which strict C compilers hate.
12369 [Ralf S. Engelschall, pointed out by Carlos Amengual]
12371 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
12372 compiled in by default: it has problems with large keys.
12375 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
12376 DH private keys and/or callback functions which directly correspond to
12377 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
12378 is needed for applications which have to configure certificates on a
12379 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
12381 For the RSA certificate situation is makes no difference, but
12382 for the DSA certificate situation this fixes the "no shared cipher"
12383 problem where the OpenSSL cipher selection procedure failed because the
12384 temporary keys were not overtaken from the context and the API provided
12385 no way to reconfigure them.
12386 The new functions now let applications reconfigure the stuff and they
12387 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
12388 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
12389 non-public-API function ssl_cert_instantiate() is used as a helper
12390 function and also to reduce code redundancy inside ssl_rsa.c.
12391 [Ralf S. Engelschall]
12393 *) Move s_server -dcert and -dkey options out of the undocumented feature
12394 area because they are useful for the DSA situation and should be
12395 recognized by the users.
12396 [Ralf S. Engelschall]
12398 *) Fix the cipher decision scheme for export ciphers: the export bits are
12399 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
12400 SSL_EXP_MASK. So, the original variable has to be used instead of the
12401 already masked variable.
12402 [Richard Levitte <levitte@stacken.kth.se>]
12404 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
12405 [Richard Levitte <levitte@stacken.kth.se>]
12407 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12408 from `int' to `unsigned int' because it's a length and initialized by
12409 EVP_DigestFinal() which expects an `unsigned int *'.
12410 [Richard Levitte <levitte@stacken.kth.se>]
12412 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12413 script. Instead use the usual Shell->Perl transition trick.
12414 [Ralf S. Engelschall]
12416 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12417 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12418 -noout -modulus' as it's already the case for `openssl rsa -noout
12419 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12420 currently the public key is printed (a decision which was already done by
12421 `openssl dsa -modulus' in the past) which serves a similar purpose.
12422 Additionally the NO_RSA no longer completely removes the whole -modulus
12423 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12425 [Ralf S. Engelschall]
12427 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12428 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12429 [Arne Ansper <arne@ats.cyber.ee>]
12431 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12432 to be added. Now both 'req' and 'ca' can use new objects defined in the
12436 *) Add cool BIO that does syslog (or event log on NT).
12437 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12439 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12440 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12441 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12442 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12445 *) Add preliminary config info for new extension code.
12448 *) Make RSA_NO_PADDING really use no padding.
12449 [Ulf Moeller <ulf@fitug.de>]
12451 *) Generate errors when private/public key check is done.
12454 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12455 for some CRL extensions and new objects added.
12458 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12459 key usage extension and fuller support for authority key id.
12462 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12463 padding method for RSA, which is recommended for new applications in PKCS
12464 #1 v2.0 (RFC 2437, October 1998).
12465 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
12466 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
12467 against Bleichbacher's attack on RSA.
12468 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
12471 *) Updates to the new SSL compression code
12472 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12474 *) Fix so that the version number in the master secret, when passed
12475 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
12476 (because the server will not accept higher), that the version number
12477 is 0x03,0x01, not 0x03,0x00
12478 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12480 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
12481 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
12482 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
12485 *) Support for RAW extensions where an arbitrary extension can be
12486 created by including its DER encoding. See apps/openssl.cnf for
12490 *) Make sure latest Perl versions don't interpret some generated C array
12491 code as Perl array code in the crypto/err/err_genc.pl script.
12492 [Lars Weber <3weber@informatik.uni-hamburg.de>]
12494 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
12495 not many people have the assembler. Various Win32 compilation fixes and
12496 update to the INSTALL.W32 file with (hopefully) more accurate Win32
12497 build instructions.
12500 *) Modify configure script 'Configure' to automatically create crypto/date.h
12501 file under Win32 and also build pem.h from pem.org. New script
12502 util/mkfiles.pl to create the MINFO file on environments that can't do a
12503 'make files': perl util/mkfiles.pl >MINFO should work.
12506 *) Major rework of DES function declarations, in the pursuit of correctness
12507 and purity. As a result, many evil casts evaporated, and some weirdness,
12508 too. You may find this causes warnings in your code. Zapping your evil
12509 casts will probably fix them. Mostly.
12512 *) Fix for a typo in asn1.h. Bug fix to object creation script
12513 obj_dat.pl. It considered a zero in an object definition to mean
12514 "end of object": none of the objects in objects.h have any zeros
12515 so it wasn't spotted.
12516 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
12518 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
12519 Masking (CBCM). In the absence of test vectors, the best I have been able
12520 to do is check that the decrypt undoes the encrypt, so far. Send me test
12521 vectors if you have them.
12524 *) Correct calculation of key length for export ciphers (too much space was
12525 allocated for null ciphers). This has not been tested!
12528 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
12529 message is now correct (it understands "crypto" and "ssl" on its
12530 command line). There is also now an "update" option. This will update
12531 the util/ssleay.num and util/libeay.num files with any new functions.
12533 perl util/mkdef.pl crypto ssl update
12534 it will update them.
12537 *) Overhauled the Perl interface (perl/*):
12538 - ported BN stuff to OpenSSL's different BN library
12539 - made the perl/ source tree CVS-aware
12540 - renamed the package from SSLeay to OpenSSL (the files still contain
12541 their history because I've copied them in the repository)
12542 - removed obsolete files (the test scripts will be replaced
12543 by better Test::Harness variants in the future)
12544 [Ralf S. Engelschall]
12546 *) First cut for a very conservative source tree cleanup:
12547 1. merge various obsolete readme texts into doc/ssleay.txt
12548 where we collect the old documents and readme texts.
12549 2. remove the first part of files where I'm already sure that we no
12550 longer need them because of three reasons: either they are just temporary
12551 files which were left by Eric or they are preserved original files where
12552 I've verified that the diff is also available in the CVS via "cvs diff
12553 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
12554 the crypto/md/ stuff).
12555 [Ralf S. Engelschall]
12557 *) More extension code. Incomplete support for subject and issuer alt
12558 name, issuer and authority key id. Change the i2v function parameters
12559 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
12560 what that's for :-) Fix to ASN1 macro which messed up
12561 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
12564 *) Preliminary support for ENUMERATED type. This is largely copied from the
12568 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
12569 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12571 *) Make sure `make rehash' target really finds the `openssl' program.
12572 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12574 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
12575 like to hear about it if this slows down other processors.
12578 *) Add CygWin32 platform information to Configure script.
12579 [Alan Batie <batie@aahz.jf.intel.com>]
12581 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
12582 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
12584 *) New program nseq to manipulate netscape certificate sequences
12587 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
12591 *) Fixes to BN code. Previously the default was to define BN_RECURSION
12592 but the BN code had some problems that would cause failures when
12593 doing certificate verification and some other functions.
12594 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12596 *) Add ASN1 and PEM code to support netscape certificate sequences.
12599 *) Add ASN1 and PEM code to support netscape certificate sequences.
12602 *) Add several PKIX and private extended key usage OIDs.
12605 *) Modify the 'ca' program to handle the new extension code. Modify
12606 openssl.cnf for new extension format, add comments.
12609 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12610 and add a sample to openssl.cnf so req -x509 now adds appropriate
12614 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12615 error code, add initial support to X509_print() and x509 application.
12618 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12619 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12620 stuff is currently isolated and isn't even compiled yet.
12623 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
12624 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
12625 Removed the versions check from X509 routines when loading extensions:
12626 this allows certain broken certificates that don't set the version
12627 properly to be processed.
12630 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
12631 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
12632 can still be regenerated with "make depend".
12635 *) Spelling mistake in C version of CAST-128.
12636 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
12638 *) Changes to the error generation code. The perl script err-code.pl
12639 now reads in the old error codes and retains the old numbers, only
12640 adding new ones if necessary. It also only changes the .err files if new
12641 codes are added. The makefiles have been modified to only insert errors
12642 when needed (to avoid needlessly modifying header files). This is done
12643 by only inserting errors if the .err file is newer than the auto generated
12644 C file. To rebuild all the error codes from scratch (the old behaviour)
12645 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
12646 or delete all the .err files.
12649 *) CAST-128 was incorrectly implemented for short keys. The C version has
12650 been fixed, but is untested. The assembler versions are also fixed, but
12651 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
12652 to regenerate it if needed.
12653 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
12654 Hagino <itojun@kame.net>]
12656 *) File was opened incorrectly in randfile.c.
12657 [Ulf Möller <ulf@fitug.de>]
12659 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
12660 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
12661 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
12662 al: it's just almost always a UTCTime. Note this patch adds new error
12663 codes so do a "make errors" if there are problems.
12666 *) Correct Linux 1 recognition in config.
12667 [Ulf Möller <ulf@fitug.de>]
12669 *) Remove pointless MD5 hash when using DSA keys in ca.
12670 [Anonymous <nobody@replay.com>]
12672 *) Generate an error if given an empty string as a cert directory. Also
12673 generate an error if handed NULL (previously returned 0 to indicate an
12674 error, but didn't set one).
12675 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
12677 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
12680 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
12681 parameters. This was causing a warning which killed off the Win32 compile.
12684 *) Remove C++ style comments from crypto/bn/bn_local.h.
12685 [Neil Costigan <neil.costigan@celocom.com>]
12687 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
12688 based on a text string, looking up short and long names and finally
12689 "dot" format. The "dot" format stuff didn't work. Added new function
12690 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
12691 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
12692 OID is not part of the table.
12695 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
12696 X509_LOOKUP_by_alias().
12699 *) Sort openssl functions by name.
12702 *) Get the gendsa program working (hopefully) and add it to app list. Remove
12703 encryption from sample DSA keys (in case anyone is interested the password
12707 *) Make _all_ *_free functions accept a NULL pointer.
12708 [Frans Heymans <fheymans@isaserver.be>]
12710 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
12712 [Anonymous <nobody@replay.com>]
12714 *) s_server should send the CAfile as acceptable CAs, not its own cert.
12715 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12717 *) Don't blow it for numeric -newkey arguments to apps/req.
12718 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12720 *) Temp key "for export" tests were wrong in s3_srvr.c.
12721 [Anonymous <nobody@replay.com>]
12723 *) Add prototype for temp key callback functions
12724 SSL_CTX_set_tmp_{rsa,dh}_callback().
12727 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
12728 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
12731 *) X509_name_add_entry() freed the wrong thing after an error.
12732 [Arne Ansper <arne@ats.cyber.ee>]
12734 *) rsa_eay.c would attempt to free a NULL context.
12735 [Arne Ansper <arne@ats.cyber.ee>]
12737 *) BIO_s_socket() had a broken should_retry() on Windoze.
12738 [Arne Ansper <arne@ats.cyber.ee>]
12740 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
12741 [Arne Ansper <arne@ats.cyber.ee>]
12743 *) Make sure the already existing X509_STORE->depth variable is initialized
12744 in X509_STORE_new(), but document the fact that this variable is still
12745 unused in the certificate verification process.
12746 [Ralf S. Engelschall]
12748 *) Fix the various library and apps files to free up pkeys obtained from
12749 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
12752 *) Fix reference counting in X509_PUBKEY_get(). This makes
12753 demos/maurice/example2.c work, amongst others, probably.
12754 [Steve Henson and Ben Laurie]
12756 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
12757 `openssl' and second, the shortcut symlinks for the `openssl <command>'
12758 are no longer created. This way we have a single and consistent command
12759 line interface `openssl <command>', similar to `cvs <command>'.
12760 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
12762 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
12763 BIT STRING wrapper always have zero unused bits.
12766 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
12769 *) Make the top-level INSTALL documentation easier to understand.
12772 *) Makefiles updated to exit if an error occurs in a sub-directory
12773 make (including if user presses ^C) [Paul Sutton]
12775 *) Make Montgomery context stuff explicit in RSA data structure.
12778 *) Fix build order of pem and err to allow for generated pem.h.
12781 *) Fix renumbering bug in X509_NAME_delete_entry().
12784 *) Enhanced the err-ins.pl script so it makes the error library number
12785 global and can add a library name. This is needed for external ASN1 and
12786 other error libraries.
12789 *) Fixed sk_insert which never worked properly.
12792 *) Fix ASN1 macros so they can handle indefinite length constructed
12793 EXPLICIT tags. Some non standard certificates use these: they can now
12797 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
12798 into a single doc/ssleay.txt bundle. This way the information is still
12799 preserved but no longer messes up this directory. Now it's new room for
12800 the new set of documentation files.
12801 [Ralf S. Engelschall]
12803 *) SETs were incorrectly DER encoded. This was a major pain, because they
12804 shared code with SEQUENCEs, which aren't coded the same. This means that
12805 almost everything to do with SETs or SEQUENCEs has either changed name or
12806 number of arguments.
12807 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
12809 *) Fix test data to work with the above.
12812 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
12813 was already fixed by Eric for 0.9.1 it seems.
12814 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
12816 *) Autodetect FreeBSD3.
12819 *) Fix various bugs in Configure. This affects the following platforms:
12823 unixware-2.0-pentium
12827 *) Eliminate generated files from CVS. Reorder tests to regenerate files
12828 before they are needed.
12831 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
12835 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
12837 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
12838 changed SSLeay to OpenSSL in version strings.
12839 [Ralf S. Engelschall]
12841 *) Some fixups to the top-level documents.
12844 *) Fixed the nasty bug where rsaref.h was not found under compile-time
12845 because the symlink to include/ was missing.
12846 [Ralf S. Engelschall]
12848 *) Incorporated the popular no-RSA/DSA-only patches
12849 which allow to compile a RSA-free SSLeay.
12850 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
12852 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
12853 when "ssleay" is still not found.
12854 [Ralf S. Engelschall]
12856 *) Added more platforms to Configure: Cray T3E, HPUX 11,
12857 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
12859 *) Updated the README file.
12860 [Ralf S. Engelschall]
12862 *) Added various .cvsignore files in the CVS repository subdirs
12863 to make a "cvs update" really silent.
12864 [Ralf S. Engelschall]
12866 *) Recompiled the error-definition header files and added
12867 missing symbols to the Win32 linker tables.
12868 [Ralf S. Engelschall]
12870 *) Cleaned up the top-level documents;
12871 o new files: CHANGES and LICENSE
12872 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
12873 o merged COPYRIGHT into LICENSE
12874 o removed obsolete TODO file
12875 o renamed MICROSOFT to INSTALL.W32
12876 [Ralf S. Engelschall]
12878 *) Removed dummy files from the 0.9.1b source tree:
12879 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
12880 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
12881 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
12882 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
12883 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
12884 [Ralf S. Engelschall]
12886 *) Added various platform portability fixes.
12889 *) The Genesis of the OpenSSL rpject:
12890 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
12891 Young and Tim J. Hudson created while they were working for C2Net until
12893 [The OpenSSL Project]
12896 Changes between 0.9.0b and 0.9.1b [not released]
12898 *) Updated a few CA certificates under certs/
12901 *) Changed some BIGNUM api stuff.
12904 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
12905 DGUX x86, Linux Alpha, etc.
12908 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
12909 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
12913 *) Add -strparse option to asn1pars program which parses nested
12915 [Dr Stephen Henson <shenson@bigfoot.com>]
12917 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
12920 *) DSA fix for "ca" program.
12923 *) Added "-genkey" option to "dsaparam" program.
12926 *) Added RIPE MD160 (rmd160) message digest.
12929 *) Added -a (all) option to "ssleay version" command.
12932 *) Added PLATFORM define which is the id given to Configure.
12935 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
12938 *) Extended the ASN.1 parser routines.
12941 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
12944 *) Added a BN_CTX to the BN library.
12947 *) Fixed the weak key values in DES library
12950 *) Changed API in EVP library for cipher aliases.
12953 *) Added support for RC2/64bit cipher.
12956 *) Converted the lhash library to the crypto/mem.c functions.
12959 *) Added more recognized ASN.1 object ids.
12962 *) Added more RSA padding checks for SSL/TLS.
12965 *) Added BIO proxy/filter functionality.
12968 *) Added extra_certs to SSL_CTX which can be used
12969 send extra CA certificates to the client in the CA cert chain sending
12970 process. It can be configured with SSL_CTX_add_extra_chain_cert().
12973 *) Now Fortezza is denied in the authentication phase because
12974 this is key exchange mechanism is not supported by SSLeay at all.
12977 *) Additional PKCS1 checks.
12980 *) Support the string "TLSv1" for all TLS v1 ciphers.
12983 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
12984 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
12987 *) Fixed a few memory leaks.
12990 *) Fixed various code and comment typos.
12993 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
12994 bytes sent in the client random.
12995 [Edward Bishop <ebishop@spyglass.com>]
projects / openssl.git / blob