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 1.1.0i [xx XXX xxxx]
14 Changes between 1.1.0g and 1.1.0h [27 Mar 2018]
16 *) Constructed ASN.1 types with a recursive definition could exceed the stack
18 Constructed ASN.1 types with a recursive definition (such as can be found
19 in PKCS7) could eventually exceed the stack given malicious input with
20 excessive recursion. This could result in a Denial Of Service attack. There
21 are no such structures used within SSL/TLS that come from untrusted sources
22 so this is considered safe.
24 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz
29 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC
31 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is
32 effectively reduced to only comparing the least significant bit of each
33 byte. This allows an attacker to forge messages that would be considered as
34 authenticated in an amount of tries lower than that guaranteed by the
35 security claims of the scheme. The module can only be compiled by the
36 HP-UX assembler, so that only HP-UX PA-RISC targets are affected.
38 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg
43 *) Add a build target 'build_all_generated', to build all generated files
44 and only that. This can be used to prepare everything that requires
45 things like perl for a system that lacks perl and then move everything
46 to that system and do the rest of the build there.
49 *) Backport SSL_OP_NO_RENGOTIATION
51 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the
52 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity
53 changes this is no longer possible in 1.1.0. Therefore the new
54 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to
55 1.1.0 to provide equivalent functionality.
57 Note that if an application built against 1.1.0h headers (or above) is run
58 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be
59 accepted but nothing will happen, i.e. renegotiation will not be prevented.
62 *) Removed the OS390-Unix config target. It relied on a script that doesn't
66 *) rsaz_1024_mul_avx2 overflow bug on x86_64
68 There is an overflow bug in the AVX2 Montgomery multiplication procedure
69 used in exponentiation with 1024-bit moduli. No EC algorithms are affected.
70 Analysis suggests that attacks against RSA and DSA as a result of this
71 defect would be very difficult to perform and are not believed likely.
72 Attacks against DH1024 are considered just feasible, because most of the
73 work necessary to deduce information about a private key may be performed
74 offline. The amount of resources required for such an attack would be
75 significant. However, for an attack on TLS to be meaningful, the server
76 would have to share the DH1024 private key among multiple clients, which is
77 no longer an option since CVE-2016-0701.
79 This only affects processors that support the AVX2 but not ADX extensions
80 like Intel Haswell (4th generation).
82 This issue was reported to OpenSSL by David Benjamin (Google). The issue
83 was originally found via the OSS-Fuzz project.
87 Changes between 1.1.0f and 1.1.0g [2 Nov 2017]
89 *) bn_sqrx8x_internal carry bug on x86_64
91 There is a carry propagating bug in the x86_64 Montgomery squaring
92 procedure. No EC algorithms are affected. Analysis suggests that attacks
93 against RSA and DSA as a result of this defect would be very difficult to
94 perform and are not believed likely. Attacks against DH are considered just
95 feasible (although very difficult) because most of the work necessary to
96 deduce information about a private key may be performed offline. The amount
97 of resources required for such an attack would be very significant and
98 likely only accessible to a limited number of attackers. An attacker would
99 additionally need online access to an unpatched system using the target
100 private key in a scenario with persistent DH parameters and a private
101 key that is shared between multiple clients.
103 This only affects processors that support the BMI1, BMI2 and ADX extensions
104 like Intel Broadwell (5th generation) and later or AMD Ryzen.
106 This issue was reported to OpenSSL by the OSS-Fuzz project.
110 *) Malformed X.509 IPAddressFamily could cause OOB read
112 If an X.509 certificate has a malformed IPAddressFamily extension,
113 OpenSSL could do a one-byte buffer overread. The most likely result
114 would be an erroneous display of the certificate in text format.
116 This issue was reported to OpenSSL by the OSS-Fuzz project.
120 *) Ignore the '-named_curve auto' value for compatibility of applications
122 [Tomas Mraz <tmraz@fedoraproject.org>]
124 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd.
127 Changes between 1.1.0e and 1.1.0f [25 May 2017]
129 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target
130 platform rather than 'mingw'.
133 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c.
134 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1,
135 which is the minimum version we support.
138 Changes between 1.1.0d and 1.1.0e [16 Feb 2017]
140 *) Encrypt-Then-Mac renegotiation crash
142 During a renegotiation handshake if the Encrypt-Then-Mac extension is
143 negotiated where it was not in the original handshake (or vice-versa) then
144 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients
145 and servers are affected.
147 This issue was reported to OpenSSL by Joe Orton (Red Hat).
151 Changes between 1.1.0c and 1.1.0d [26 Jan 2017]
153 *) Truncated packet could crash via OOB read
155 If one side of an SSL/TLS path is running on a 32-bit host and a specific
156 cipher is being used, then a truncated packet can cause that host to
157 perform an out-of-bounds read, usually resulting in a crash.
159 This issue was reported to OpenSSL by Robert Święcki of Google.
163 *) Bad (EC)DHE parameters cause a client crash
165 If a malicious server supplies bad parameters for a DHE or ECDHE key
166 exchange then this can result in the client attempting to dereference a
167 NULL pointer leading to a client crash. This could be exploited in a Denial
170 This issue was reported to OpenSSL by Guido Vranken.
174 *) BN_mod_exp may produce incorrect results on x86_64
176 There is a carry propagating bug in the x86_64 Montgomery squaring
177 procedure. No EC algorithms are affected. Analysis suggests that attacks
178 against RSA and DSA as a result of this defect would be very difficult to
179 perform and are not believed likely. Attacks against DH are considered just
180 feasible (although very difficult) because most of the work necessary to
181 deduce information about a private key may be performed offline. The amount
182 of resources required for such an attack would be very significant and
183 likely only accessible to a limited number of attackers. An attacker would
184 additionally need online access to an unpatched system using the target
185 private key in a scenario with persistent DH parameters and a private
186 key that is shared between multiple clients. For example this can occur by
187 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very
188 similar to CVE-2015-3193 but must be treated as a separate problem.
190 This issue was reported to OpenSSL by the OSS-Fuzz project.
194 Changes between 1.1.0b and 1.1.0c [10 Nov 2016]
196 *) ChaCha20/Poly1305 heap-buffer-overflow
198 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to
199 a DoS attack by corrupting larger payloads. This can result in an OpenSSL
200 crash. This issue is not considered to be exploitable beyond a DoS.
202 This issue was reported to OpenSSL by Robert Święcki (Google Security Team)
206 *) CMS Null dereference
208 Applications parsing invalid CMS structures can crash with a NULL pointer
209 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE
210 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the
211 structure callback if an attempt is made to free certain invalid encodings.
212 Only CHOICE structures using a callback which do not handle NULL value are
215 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure.
219 *) Montgomery multiplication may produce incorrect results
221 There is a carry propagating bug in the Broadwell-specific Montgomery
222 multiplication procedure that handles input lengths divisible by, but
223 longer than 256 bits. Analysis suggests that attacks against RSA, DSA
224 and DH private keys are impossible. This is because the subroutine in
225 question is not used in operations with the private key itself and an input
226 of the attacker's direct choice. Otherwise the bug can manifest itself as
227 transient authentication and key negotiation failures or reproducible
228 erroneous outcome of public-key operations with specially crafted input.
229 Among EC algorithms only Brainpool P-512 curves are affected and one
230 presumably can attack ECDH key negotiation. Impact was not analyzed in
231 detail, because pre-requisites for attack are considered unlikely. Namely
232 multiple clients have to choose the curve in question and the server has to
233 share the private key among them, neither of which is default behaviour.
234 Even then only clients that chose the curve will be affected.
236 This issue was publicly reported as transient failures and was not
237 initially recognized as a security issue. Thanks to Richard Morgan for
238 providing reproducible case.
242 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0
243 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to
244 prevent issues where no progress is being made and the peer continually
245 sends unrecognised record types, using up resources processing them.
248 *) Removed automatic addition of RPATH in shared libraries and executables,
249 as this was a remainder from OpenSSL 1.0.x and isn't needed any more.
252 Changes between 1.1.0a and 1.1.0b [26 Sep 2016]
254 *) Fix Use After Free for large message sizes
256 The patch applied to address CVE-2016-6307 resulted in an issue where if a
257 message larger than approx 16k is received then the underlying buffer to
258 store the incoming message is reallocated and moved. Unfortunately a
259 dangling pointer to the old location is left which results in an attempt to
260 write to the previously freed location. This is likely to result in a
261 crash, however it could potentially lead to execution of arbitrary code.
263 This issue only affects OpenSSL 1.1.0a.
265 This issue was reported to OpenSSL by Robert Święcki.
269 Changes between 1.1.0 and 1.1.0a [22 Sep 2016]
271 *) OCSP Status Request extension unbounded memory growth
273 A malicious client can send an excessively large OCSP Status Request
274 extension. If that client continually requests renegotiation, sending a
275 large OCSP Status Request extension each time, then there will be unbounded
276 memory growth on the server. This will eventually lead to a Denial Of
277 Service attack through memory exhaustion. Servers with a default
278 configuration are vulnerable even if they do not support OCSP. Builds using
279 the "no-ocsp" build time option are not affected.
281 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
285 *) SSL_peek() hang on empty record
287 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer
288 sends an empty record. This could be exploited by a malicious peer in a
289 Denial Of Service attack.
291 This issue was reported to OpenSSL by Alex Gaynor.
295 *) Excessive allocation of memory in tls_get_message_header() and
296 dtls1_preprocess_fragment()
298 A (D)TLS message includes 3 bytes for its length in the header for the
299 message. This would allow for messages up to 16Mb in length. Messages of
300 this length are excessive and OpenSSL includes a check to ensure that a
301 peer is sending reasonably sized messages in order to avoid too much memory
302 being consumed to service a connection. A flaw in the logic of version
303 1.1.0 means that memory for the message is allocated too early, prior to
304 the excessive message length check. Due to way memory is allocated in
305 OpenSSL this could mean an attacker could force up to 21Mb to be allocated
306 to service a connection. This could lead to a Denial of Service through
307 memory exhaustion. However, the excessive message length check still takes
308 place, and this would cause the connection to immediately fail. Assuming
309 that the application calls SSL_free() on the failed connection in a timely
310 manner then the 21Mb of allocated memory will then be immediately freed
311 again. Therefore the excessive memory allocation will be transitory in
312 nature. This then means that there is only a security impact if:
314 1) The application does not call SSL_free() in a timely manner in the event
315 that the connection fails
317 2) The application is working in a constrained environment where there is
318 very little free memory
320 3) The attacker initiates multiple connection attempts such that there are
321 multiple connections in a state where memory has been allocated for the
322 connection; SSL_free() has not yet been called; and there is insufficient
323 memory to service the multiple requests.
325 Except in the instance of (1) above any Denial Of Service is likely to be
326 transitory because as soon as the connection fails the memory is
327 subsequently freed again in the SSL_free() call. However there is an
328 increased risk during this period of application crashes due to the lack of
329 memory - which would then mean a more serious Denial of Service.
331 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.)
332 (CVE-2016-6307 and CVE-2016-6308)
335 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler,
336 had to be removed. Primary reason is that vendor assembler can't
337 assemble our modules with -KPIC flag. As result it, assembly
338 support, was not even available as option. But its lack means
339 lack of side-channel resistant code, which is incompatible with
340 security by todays standards. Fortunately gcc is readily available
341 prepackaged option, which we firmly point at...
344 Changes between 1.0.2h and 1.1.0 [25 Aug 2016]
346 *) Windows command-line tool supports UTF-8 opt-in option for arguments
347 and console input. Setting OPENSSL_WIN32_UTF8 environment variable
348 (to any value) allows Windows user to access PKCS#12 file generated
349 with Windows CryptoAPI and protected with non-ASCII password, as well
350 as files generated under UTF-8 locale on Linux also protected with
354 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites
355 have been disabled by default and removed from DEFAULT, just like RC4.
356 See the RC4 item below to re-enable both.
359 *) The method for finding the storage location for the Windows RAND seed file
360 has changed. First we check %RANDFILE%. If that is not set then we check
361 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If
362 all else fails we fall back to C:\.
365 *) The EVP_EncryptUpdate() function has had its return type changed from void
366 to int. A return of 0 indicates and error while a return of 1 indicates
370 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and
371 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch
372 off the constant time implementation for RSA, DSA and DH have been made
373 no-ops and deprecated.
376 *) Windows RAND implementation was simplified to only get entropy by
377 calling CryptGenRandom(). Various other RAND-related tickets
379 [Joseph Wylie Yandle, Rich Salz]
381 *) The stack and lhash API's were renamed to start with OPENSSL_SK_
382 and OPENSSL_LH_, respectively. The old names are available
383 with API compatibility. They new names are now completely documented.
386 *) Unify TYPE_up_ref(obj) methods signature.
387 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(),
388 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an
389 int (instead of void) like all others TYPE_up_ref() methods.
390 So now these methods also check the return value of CRYPTO_atomic_add(),
391 and the validity of object reference counter.
392 [fdasilvayy@gmail.com]
394 *) With Windows Visual Studio builds, the .pdb files are installed
395 alongside the installed libraries and executables. For a static
396 library installation, ossl_static.pdb is the associate compiler
397 generated .pdb file to be used when linking programs.
400 *) Remove openssl.spec. Packaging files belong with the packagers.
403 *) Automatic Darwin/OSX configuration has had a refresh, it will now
404 recognise x86_64 architectures automatically. You can still decide
405 to build for a different bitness with the environment variable
406 KERNEL_BITS (can be 32 or 64), for example:
408 KERNEL_BITS=32 ./config
412 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0,
413 256 bit AES and HMAC with SHA256.
416 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only).
419 *) Triple-DES ciphers have been moved from HIGH to MEDIUM.
422 *) To enable users to have their own config files and build file templates,
423 Configure looks in the directory indicated by the environment variable
424 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/
425 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical
426 name and is used as is.
429 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX,
430 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type
431 X509_CERT_FILE_CTX was removed.
434 *) "shared" builds are now the default. To create only static libraries use
435 the "no-shared" Configure option.
438 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options.
439 All of these option have not worked for some while and are fundamental
443 *) Make various cleanup routines no-ops and mark them as deprecated. Most
444 global cleanup functions are no longer required because they are handled
445 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages).
446 Explicitly de-initing can cause problems (e.g. where a library that uses
447 OpenSSL de-inits, but an application is still using it). The affected
448 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(),
449 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(),
450 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and
454 *) --strict-warnings no longer enables runtime debugging options
455 such as REF_DEBUG. Instead, debug options are automatically
456 enabled with '--debug' builds.
457 [Andy Polyakov, Emilia Käsper]
459 *) Made DH and DH_METHOD opaque. The structures for managing DH objects
460 have been moved out of the public header files. New functions for managing
461 these have been added.
464 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA
465 objects have been moved out of the public header files. New
466 functions for managing these have been added.
469 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects
470 have been moved out of the public header files. New functions for managing
471 these have been added.
474 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been
475 moved out of the public header files. New functions for managing these
479 *) Removed no-rijndael as a config option. Rijndael is an old name for AES.
482 *) Removed the mk1mf build scripts.
485 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so
486 it is always safe to #include a header now.
489 *) Removed the aged BC-32 config and all its supporting scripts
492 *) Removed support for Ultrix, Netware, and OS/2.
495 *) Add support for HKDF.
498 *) Add support for blake2b and blake2s
501 *) Added support for "pipelining". Ciphers that have the
502 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple
503 encryptions/decryptions simultaneously. There are currently no built-in
504 ciphers with this property but the expectation is that engines will be able
505 to offer it to significantly improve throughput. Support has been extended
506 into libssl so that multiple records for a single connection can be
507 processed in one go (for >=TLS 1.1).
510 *) Added the AFALG engine. This is an async capable engine which is able to
511 offload work to the Linux kernel. In this initial version it only supports
512 AES128-CBC. The kernel must be version 4.1.0 or greater.
515 *) OpenSSL now uses a new threading API. It is no longer necessary to
516 set locking callbacks to use OpenSSL in a multi-threaded environment. There
517 are two supported threading models: pthreads and windows threads. It is
518 also possible to configure OpenSSL at compile time for "no-threads". The
519 old threading API should no longer be used. The functions have been
520 replaced with "no-op" compatibility macros.
521 [Alessandro Ghedini, Matt Caswell]
523 *) Modify behavior of ALPN to invoke callback after SNI/servername
524 callback, such that updates to the SSL_CTX affect ALPN.
527 *) Add SSL_CIPHER queries for authentication and key-exchange.
530 *) Changes to the DEFAULT cipherlist:
531 - Prefer (EC)DHE handshakes over plain RSA.
532 - Prefer AEAD ciphers over legacy ciphers.
533 - Prefer ECDSA over RSA when both certificates are available.
534 - Prefer TLSv1.2 ciphers/PRF.
535 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the
539 *) Change the ECC default curve list to be this, in order: x25519,
540 secp256r1, secp521r1, secp384r1.
543 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are
544 disabled by default. They can be re-enabled using the
545 enable-weak-ssl-ciphers option to Configure.
548 *) If the server has ALPN configured, but supports no protocols that the
549 client advertises, send a fatal "no_application_protocol" alert.
550 This behaviour is SHALL in RFC 7301, though it isn't universally
551 implemented by other servers.
554 *) Add X25519 support.
555 Add ASN.1 and EVP_PKEY methods for X25519. This includes support
556 for public and private key encoding using the format documented in
557 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports
558 key generation and key derivation.
560 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses
564 *) Deprecate SRP_VBASE_get_by_user.
565 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
566 In order to fix an unavoidable memory leak (CVE-2016-0798),
567 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP
568 seed, even if the seed is configured.
570 Users should use SRP_VBASE_get1_by_user instead. Note that in
571 SRP_VBASE_get1_by_user, caller must free the returned value. Note
572 also that even though configuring the SRP seed attempts to hide
573 invalid usernames by continuing the handshake with fake
574 credentials, this behaviour is not constant time and no strong
575 guarantees are made that the handshake is indistinguishable from
576 that of a valid user.
579 *) Configuration change; it's now possible to build dynamic engines
580 without having to build shared libraries and vice versa. This
581 only applies to the engines in engines/, those in crypto/engine/
582 will always be built into libcrypto (i.e. "static").
584 Building dynamic engines is enabled by default; to disable, use
585 the configuration option "disable-dynamic-engine".
587 The only requirements for building dynamic engines are the
588 presence of the DSO module and building with position independent
589 code, so they will also automatically be disabled if configuring
590 with "disable-dso" or "disable-pic".
592 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE
593 are also taken away from openssl/opensslconf.h, as they are
597 *) Configuration change; if there is a known flag to compile
598 position independent code, it will always be applied on the
599 libcrypto and libssl object files, and never on the application
600 object files. This means other libraries that use routines from
601 libcrypto / libssl can be made into shared libraries regardless
602 of how OpenSSL was configured.
604 If this isn't desirable, the configuration options "disable-pic"
605 or "no-pic" can be used to disable the use of PIC. This will
606 also disable building shared libraries and dynamic engines.
609 *) Removed JPAKE code. It was experimental and has no wide use.
612 *) The INSTALL_PREFIX Makefile variable has been renamed to
613 DESTDIR. That makes for less confusion on what this variable
614 is for. Also, the configuration option --install_prefix is
618 *) Heartbeat for TLS has been removed and is disabled by default
619 for DTLS; configure with enable-heartbeats. Code that uses the
620 old #define's might need to be updated.
621 [Emilia Käsper, Rich Salz]
623 *) Rename REF_CHECK to REF_DEBUG.
626 *) New "unified" build system
628 The "unified" build system is aimed to be a common system for all
629 platforms we support. With it comes new support for VMS.
631 This system builds supports building in a different directory tree
632 than the source tree. It produces one Makefile (for unix family
633 or lookalikes), or one descrip.mms (for VMS).
635 The source of information to make the Makefile / descrip.mms is
636 small files called 'build.info', holding the necessary
637 information for each directory with source to compile, and a
638 template in Configurations, like unix-Makefile.tmpl or
641 With this change, the library names were also renamed on Windows
642 and on VMS. They now have names that are closer to the standard
643 on Unix, and include the major version number, and in certain
644 cases, the architecture they are built for. See "Notes on shared
645 libraries" in INSTALL.
647 We rely heavily on the perl module Text::Template.
650 *) Added support for auto-initialisation and de-initialisation of the library.
651 OpenSSL no longer requires explicit init or deinit routines to be called,
652 except in certain circumstances. See the OPENSSL_init_crypto() and
653 OPENSSL_init_ssl() man pages for further information.
656 *) The arguments to the DTLSv1_listen function have changed. Specifically the
657 "peer" argument is now expected to be a BIO_ADDR object.
659 *) Rewrite of BIO networking library. The BIO library lacked consistent
660 support of IPv6, and adding it required some more extensive
661 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types,
662 which hold all types of addresses and chains of address information.
663 It also introduces a new API, with functions like BIO_socket,
664 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept.
665 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram
666 have been adapted accordingly.
669 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without
673 *) CRIME protection: disable compression by default, even if OpenSSL is
674 compiled with zlib enabled. Applications can still enable compression
675 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by
676 using the SSL_CONF library to configure compression.
679 *) The signature of the session callback configured with
680 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer
681 was explicitly marked as 'const unsigned char*' instead of
685 *) Always DPURIFY. Remove the use of uninitialized memory in the
686 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op.
689 *) Removed many obsolete configuration items, including
690 DES_PTR, DES_RISC1, DES_RISC2, DES_INT
691 MD2_CHAR, MD2_INT, MD2_LONG
693 IDEA_SHORT, IDEA_LONG
694 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX
695 [Rich Salz, with advice from Andy Polyakov]
697 *) Many BN internals have been moved to an internal header file.
698 [Rich Salz with help from Andy Polyakov]
700 *) Configuration and writing out the results from it has changed.
701 Files such as Makefile include/openssl/opensslconf.h and are now
702 produced through general templates, such as Makefile.in and
703 crypto/opensslconf.h.in and some help from the perl module
706 Also, the center of configuration information is no longer
707 Makefile. Instead, Configure produces a perl module in
708 configdata.pm which holds most of the config data (in the hash
709 table %config), the target data that comes from the target
710 configuration in one of the Configurations/*.conf files (in
714 *) To clarify their intended purposes, the Configure options
715 --prefix and --openssldir change their semantics, and become more
716 straightforward and less interdependent.
718 --prefix shall be used exclusively to give the location INSTALLTOP
719 where programs, scripts, libraries, include files and manuals are
720 going to be installed. The default is now /usr/local.
722 --openssldir shall be used exclusively to give the default
723 location OPENSSLDIR where certificates, private keys, CRLs are
724 managed. This is also where the default openssl.cnf gets
726 If the directory given with this option is a relative path, the
727 values of both the --prefix value and the --openssldir value will
728 be combined to become OPENSSLDIR.
729 The default for --openssldir is INSTALLTOP/ssl.
731 Anyone who uses --openssldir to specify where OpenSSL is to be
732 installed MUST change to use --prefix instead.
735 *) The GOST engine was out of date and therefore it has been removed. An up
736 to date GOST engine is now being maintained in an external repository.
737 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains
738 support for GOST ciphersuites (these are only activated if a GOST engine
742 *) EGD is no longer supported by default; use enable-egd when
744 [Ben Kaduk and Rich Salz]
746 *) The distribution now has Makefile.in files, which are used to
747 create Makefile's when Configure is run. *Configure must be run
748 before trying to build now.*
751 *) The return value for SSL_CIPHER_description() for error conditions
755 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication.
757 Obtaining and performing DNSSEC validation of TLSA records is
758 the application's responsibility. The application provides
759 the TLSA records of its choice to OpenSSL, and these are then
760 used to authenticate the peer.
762 The TLSA records need not even come from DNS. They can, for
763 example, be used to implement local end-entity certificate or
764 trust-anchor "pinning", where the "pin" data takes the form
765 of TLSA records, which can augment or replace verification
766 based on the usual WebPKI public certification authorities.
769 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL
770 continues to support deprecated interfaces in default builds.
771 However, applications are strongly advised to compile their
772 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides
773 the declarations of all interfaces deprecated in 0.9.8, 1.0.0
774 or the 1.1.0 releases.
776 In environments in which all applications have been ported to
777 not use any deprecated interfaces OpenSSL's Configure script
778 should be used with the --api=1.1.0 option to entirely remove
779 support for the deprecated features from the library and
780 unconditionally disable them in the installed headers.
781 Essentially the same effect can be achieved with the "no-deprecated"
782 argument to Configure, except that this will always restrict
783 the build to just the latest API, rather than a fixed API
786 As applications are ported to future revisions of the API,
787 they should update their compile-time OPENSSL_API_COMPAT define
788 accordingly, but in most cases should be able to continue to
789 compile with later releases.
791 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are
792 0x10000000L and 0x00908000L, respectively. However those
793 versions did not support the OPENSSL_API_COMPAT feature, and
794 so applications are not typically tested for explicit support
795 of just the undeprecated features of either release.
798 *) Add support for setting the minimum and maximum supported protocol.
799 It can bet set via the SSL_set_min_proto_version() and
800 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and
801 MaxProtcol. It's recommended to use the new APIs to disable
802 protocols instead of disabling individual protocols using
803 SSL_set_options() or SSL_CONF's Protocol. This change also
804 removes support for disabling TLS 1.2 in the OpenSSL TLS
805 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT.
808 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl.
811 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD
812 and integrates ECDSA and ECDH functionality into EC. Implementations can
813 now redirect key generation and no longer need to convert to or from
816 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just
817 include the ec.h header file instead.
820 *) Remove support for all 40 and 56 bit ciphers. This includes all the export
821 ciphers who are no longer supported and drops support the ephemeral RSA key
822 exchange. The LOW ciphers currently doesn't have any ciphers in it.
825 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX
826 opaque. For HMAC_CTX, the following constructors and destructors
829 HMAC_CTX *HMAC_CTX_new(void);
830 void HMAC_CTX_free(HMAC_CTX *ctx);
832 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and
833 destroy such methods has been added. See EVP_MD_meth_new(3) and
834 EVP_CIPHER_meth_new(3) for documentation.
837 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and
838 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and
839 EVP_MD_CTX_reset() should be called instead to reinitialise
840 an already created structure.
841 2) For consistency with the majority of our object creators and
842 destructors, EVP_MD_CTX_(create|destroy) were renamed to
843 EVP_MD_CTX_(new|free). The old names are retained as macros
844 for deprecated builds.
847 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable
848 cryptographic operations to be performed asynchronously as long as an
849 asynchronous capable engine is used. See the ASYNC_start_job() man page for
850 further details. Libssl has also had this capability integrated with the
851 introduction of the new mode SSL_MODE_ASYNC and associated error
852 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man
853 pages. This work was developed in partnership with Intel Corp.
856 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is
857 always enabled now. If you want to disable the support you should
858 exclude it using the list of supported ciphers. This also means that the
859 "-no_ecdhe" option has been removed from s_server.
862 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls
863 SSL_{CTX_}set1_curves() which can set a list.
866 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the
867 curve you want to support using SSL_{CTX_}set1_curves().
870 *) State machine rewrite. The state machine code has been significantly
871 refactored in order to remove much duplication of code and solve issues
872 with the old code (see ssl/statem/README for further details). This change
873 does have some associated API changes. Notably the SSL_state() function
874 has been removed and replaced by SSL_get_state which now returns an
875 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed
876 altogether. The previous handshake states defined in ssl.h and ssl3.h have
880 *) All instances of the string "ssleay" in the public API were replaced
881 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's)
882 Some error codes related to internal RSA_eay API's were renamed.
885 *) The demo files in crypto/threads were moved to demo/threads.
888 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp,
890 [Matt Caswell, Rich Salz]
892 *) New ASN.1 embed macro.
894 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the
895 structure is not allocated: it is part of the parent. That is instead of
903 This reduces memory fragmentation and make it impossible to accidentally
904 set a mandatory field to NULL.
906 This currently only works for some fields specifically a SEQUENCE, CHOICE,
907 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is
908 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or
912 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled.
915 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although
916 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also
917 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add
918 DES and RC4 ciphersuites.
921 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
922 This changes the decoding behaviour for some invalid messages,
923 though the change is mostly in the more lenient direction, and
924 legacy behaviour is preserved as much as possible.
927 *) Fix no-stdio build.
928 [ David Woodhouse <David.Woodhouse@intel.com> and also
929 Ivan Nestlerode <ivan.nestlerode@sonos.com> ]
931 *) New testing framework
932 The testing framework has been largely rewritten and is now using
933 perl and the perl modules Test::Harness and an extended variant of
934 Test::More called OpenSSL::Test to do its work. All test scripts in
935 test/ have been rewritten into test recipes, and all direct calls to
936 executables in test/Makefile have become individual recipes using the
937 simplified testing OpenSSL::Test::Simple.
939 For documentation on our testing modules, do:
941 perldoc test/testlib/OpenSSL/Test/Simple.pm
942 perldoc test/testlib/OpenSSL/Test.pm
946 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT
947 are used; the latter aborts on memory leaks (usually checked on exit).
948 Some undocumented "set malloc, etc., hooks" functions were removed
949 and others were changed. All are now documented.
952 *) In DSA_generate_parameters_ex, if the provided seed is too short,
954 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
956 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites
957 from RFC4279, RFC4785, RFC5487, RFC5489.
959 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the
960 original RSA_PSK patch.
963 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay
964 era flag was never set throughout the codebase (only read). Also removed
965 SSL3_FLAGS_POP_BUFFER which was only used if
966 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set.
969 *) Changed the default name options in the "ca", "crl", "req" and "x509"
970 to be "oneline" instead of "compat".
973 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're
974 not aware of clients that still exhibit this bug, and the workaround
975 hasn't been working properly for a while.
978 *) The return type of BIO_number_read() and BIO_number_written() as well as
979 the corresponding num_read and num_write members in the BIO structure has
980 changed from unsigned long to uint64_t. On platforms where an unsigned
981 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is
985 *) Given the pervasive nature of TLS extensions it is inadvisable to run
986 OpenSSL without support for them. It also means that maintaining
987 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
988 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
991 *) Removed support for the two export grade static DH ciphersuites
992 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
993 were newly added (along with a number of other static DH ciphersuites) to
994 1.0.2. However the two export ones have *never* worked since they were
995 introduced. It seems strange in any case to be adding new export
996 ciphersuites, and given "logjam" it also does not seem correct to fix them.
999 *) Version negotiation has been rewritten. In particular SSLv23_method(),
1000 SSLv23_client_method() and SSLv23_server_method() have been deprecated,
1001 and turned into macros which simply call the new preferred function names
1002 TLS_method(), TLS_client_method() and TLS_server_method(). All new code
1003 should use the new names instead. Also as part of this change the ssl23.h
1004 header file has been removed.
1007 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This
1008 code and the associated standard is no longer considered fit-for-purpose.
1011 *) RT2547 was closed. When generating a private key, try to make the
1012 output file readable only by the owner. This behavior change might
1013 be noticeable when interacting with other software.
1015 *) Documented all exdata functions. Added CRYPTO_free_ex_index.
1019 *) Added HTTP GET support to the ocsp command.
1022 *) Changed default digest for the dgst and enc commands from MD5 to
1026 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead.
1029 *) Added support for TLS extended master secret from
1030 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
1031 initial patch which was a great help during development.
1034 *) All libssl internal structures have been removed from the public header
1035 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
1036 now redundant). Users should not attempt to access internal structures
1037 directly. Instead they should use the provided API functions.
1040 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
1041 Access to deprecated functions can be re-enabled by running config with
1042 "enable-deprecated". In addition applications wishing to use deprecated
1043 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
1044 will, by default, disable some transitive includes that previously existed
1045 in the header files (e.g. ec.h will no longer, by default, include bn.h)
1048 *) Added support for OCB mode. OpenSSL has been granted a patent license
1049 compatible with the OpenSSL license for use of OCB. Details are available
1050 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support
1051 for OCB can be removed by calling config with no-ocb.
1054 *) SSLv2 support has been removed. It still supports receiving a SSLv2
1055 compatible client hello.
1058 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
1059 done while fixing the error code for the key-too-small case.
1060 [Annie Yousar <a.yousar@informatik.hu-berlin.de>]
1062 *) CA.sh has been removed; use CA.pl instead.
1065 *) Removed old DES API.
1068 *) Remove various unsupported platforms:
1074 Sinix/ReliantUNIX RM400
1079 16-bit platforms such as WIN16
1082 *) Clean up OPENSSL_NO_xxx #define's
1083 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
1084 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
1085 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
1086 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
1087 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
1088 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
1089 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
1090 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
1091 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
1092 Remove MS_STATIC; it's a relic from platforms <32 bits.
1095 *) Cleaned up dead code
1096 Remove all but one '#ifdef undef' which is to be looked at.
1099 *) Clean up calling of xxx_free routines.
1100 Just like free(), fix most of the xxx_free routines to accept
1101 NULL. Remove the non-null checks from callers. Save much code.
1104 *) Add secure heap for storage of private keys (when possible).
1105 Add BIO_s_secmem(), CBIGNUM, etc.
1106 Contributed by Akamai Technologies under our Corporate CLA.
1109 *) Experimental support for a new, fast, unbiased prime candidate generator,
1110 bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
1111 [Felix Laurie von Massenbach <felix@erbridge.co.uk>]
1113 *) New output format NSS in the sess_id command line tool. This allows
1114 exporting the session id and the master key in NSS keylog format.
1115 [Martin Kaiser <martin@kaiser.cx>]
1117 *) Harmonize version and its documentation. -f flag is used to display
1119 [mancha <mancha1@zoho.com>]
1121 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
1122 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue.
1123 [mancha <mancha1@zoho.com>]
1125 *) Fix some double frees. These are not thought to be exploitable.
1126 [mancha <mancha1@zoho.com>]
1128 *) A missing bounds check in the handling of the TLS heartbeat extension
1129 can be used to reveal up to 64k of memory to a connected client or
1132 Thanks for Neel Mehta of Google Security for discovering this bug and to
1133 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
1134 preparing the fix (CVE-2014-0160)
1135 [Adam Langley, Bodo Moeller]
1137 *) Fix for the attack described in the paper "Recovering OpenSSL
1138 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
1139 by Yuval Yarom and Naomi Benger. Details can be obtained from:
1140 http://eprint.iacr.org/2014/140
1142 Thanks to Yuval Yarom and Naomi Benger for discovering this
1143 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
1144 [Yuval Yarom and Naomi Benger]
1146 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
1147 this fixes a limitation in previous versions of OpenSSL.
1150 *) Experimental encrypt-then-mac support.
1152 Experimental support for encrypt then mac from
1153 draft-gutmann-tls-encrypt-then-mac-02.txt
1155 To enable it set the appropriate extension number (0x42 for the test
1156 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
1158 For non-compliant peers (i.e. just about everything) this should have no
1161 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
1165 *) Add EVP support for key wrapping algorithms, to avoid problems with
1166 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
1167 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
1168 algorithms and include tests cases.
1171 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
1175 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
1176 MGF1 digest and OAEP label.
1179 *) Make openssl verify return errors.
1180 [Chris Palmer <palmer@google.com> and Ben Laurie]
1182 *) New function ASN1_TIME_diff to calculate the difference between two
1183 ASN1_TIME structures or one structure and the current time.
1186 *) Update fips_test_suite to support multiple command line options. New
1187 test to induce all self test errors in sequence and check expected
1191 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
1192 sign or verify all in one operation.
1195 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm
1196 test programs and fips_test_suite. Includes functionality to parse
1197 the minimal script output of fipsalgest.pl directly.
1200 *) Add authorisation parameter to FIPS_module_mode_set().
1203 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
1206 *) Use separate DRBG fields for internal and external flags. New function
1207 FIPS_drbg_health_check() to perform on demand health checking. Add
1208 generation tests to fips_test_suite with reduced health check interval to
1209 demonstrate periodic health checking. Add "nodh" option to
1210 fips_test_suite to skip very slow DH test.
1213 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
1217 *) More extensive health check for DRBG checking many more failure modes.
1218 New function FIPS_selftest_drbg_all() to handle every possible DRBG
1219 combination: call this in fips_test_suite.
1222 *) Add support for canonical generation of DSA parameter 'g'. See
1225 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
1226 POST to handle HMAC cases.
1229 *) Add functions FIPS_module_version() and FIPS_module_version_text()
1230 to return numerical and string versions of the FIPS module number.
1233 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
1234 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
1235 outside the validated module in the FIPS capable OpenSSL.
1238 *) Minor change to DRBG entropy callback semantics. In some cases
1239 there is no multiple of the block length between min_len and
1240 max_len. Allow the callback to return more than max_len bytes
1241 of entropy but discard any extra: it is the callback's responsibility
1242 to ensure that the extra data discarded does not impact the
1243 requested amount of entropy.
1246 *) Add PRNG security strength checks to RSA, DSA and ECDSA using
1247 information in FIPS186-3, SP800-57 and SP800-131A.
1250 *) CCM support via EVP. Interface is very similar to GCM case except we
1251 must supply all data in one chunk (i.e. no update, final) and the
1252 message length must be supplied if AAD is used. Add algorithm test
1256 *) Initial version of POST overhaul. Add POST callback to allow the status
1257 of POST to be monitored and/or failures induced. Modify fips_test_suite
1258 to use callback. Always run all selftests even if one fails.
1261 *) XTS support including algorithm test driver in the fips_gcmtest program.
1262 Note: this does increase the maximum key length from 32 to 64 bytes but
1263 there should be no binary compatibility issues as existing applications
1264 will never use XTS mode.
1267 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
1268 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
1269 performs algorithm blocking for unapproved PRNG types. Also do not
1270 set PRNG type in FIPS_mode_set(): leave this to the application.
1271 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
1272 the standard OpenSSL PRNG: set additional data to a date time vector.
1275 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
1276 This shouldn't present any incompatibility problems because applications
1277 shouldn't be using these directly and any that are will need to rethink
1278 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
1281 *) Extensive self tests and health checking required by SP800-90 DRBG.
1282 Remove strength parameter from FIPS_drbg_instantiate and always
1283 instantiate at maximum supported strength.
1286 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
1289 *) New algorithm test program fips_dhvs to handle DH primitives only testing.
1292 *) New function DH_compute_key_padded() to compute a DH key and pad with
1293 leading zeroes if needed: this complies with SP800-56A et al.
1296 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
1297 anything, incomplete, subject to change and largely untested at present.
1300 *) Modify fipscanisteronly build option to only build the necessary object
1301 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
1304 *) Add experimental option FIPSSYMS to give all symbols in
1305 fipscanister.o and FIPS or fips prefix. This will avoid
1306 conflicts with future versions of OpenSSL. Add perl script
1307 util/fipsas.pl to preprocess assembly language source files
1308 and rename any affected symbols.
1311 *) Add selftest checks and algorithm block of non-fips algorithms in
1312 FIPS mode. Remove DES2 from selftests.
1315 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
1316 return internal method without any ENGINE dependencies. Add new
1317 tiny fips sign and verify functions.
1320 *) New build option no-ec2m to disable characteristic 2 code.
1323 *) New build option "fipscanisteronly". This only builds fipscanister.o
1324 and (currently) associated fips utilities. Uses the file Makefile.fips
1325 instead of Makefile.org as the prototype.
1328 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
1329 Update fips_gcmtest to use IV generator.
1332 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
1333 setting output buffer to NULL. The *Final function must be
1334 called although it will not retrieve any additional data. The tag
1335 can be set or retrieved with a ctrl. The IV length is by default 12
1336 bytes (96 bits) but can be set to an alternative value. If the IV
1337 length exceeds the maximum IV length (currently 16 bytes) it cannot be
1341 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
1342 underlying do_cipher function handles all cipher semantics itself
1343 including padding and finalisation. This is useful if (for example)
1344 an ENGINE cipher handles block padding itself. The behaviour of
1345 do_cipher is subtly changed if this flag is set: the return value
1346 is the number of characters written to the output buffer (zero is
1347 no longer an error code) or a negative error code. Also if the
1348 input buffer is NULL and length 0 finalisation should be performed.
1351 *) If a candidate issuer certificate is already part of the constructed
1352 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
1355 *) Improve forward-security support: add functions
1357 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
1358 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
1360 for use by SSL/TLS servers; the callback function will be called whenever a
1361 new session is created, and gets to decide whether the session may be
1362 cached to make it resumable (return 0) or not (return 1). (As by the
1363 SSL/TLS protocol specifications, the session_id sent by the server will be
1364 empty to indicate that the session is not resumable; also, the server will
1365 not generate RFC 4507 (RFC 5077) session tickets.)
1367 A simple reasonable callback implementation is to return is_forward_secure.
1368 This parameter will be set to 1 or 0 depending on the ciphersuite selected
1369 by the SSL/TLS server library, indicating whether it can provide forward
1371 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1373 *) New -verify_name option in command line utilities to set verification
1377 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
1378 Add CMAC pkey methods.
1381 *) Experimental renegotiation in s_server -www mode. If the client
1382 browses /reneg connection is renegotiated. If /renegcert it is
1383 renegotiated requesting a certificate.
1386 *) Add an "external" session cache for debugging purposes to s_server. This
1387 should help trace issues which normally are only apparent in deployed
1388 multi-process servers.
1391 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
1392 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
1393 BIO_set_cipher() and some obscure PEM functions were changed so they
1394 can now return an error. The RAND changes required a change to the
1395 RAND_METHOD structure.
1398 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
1399 a gcc attribute to warn if the result of a function is ignored. This
1400 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
1401 whose return value is often ignored.
1404 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client.
1405 These allow SCTs (signed certificate timestamps) to be requested and
1406 validated when establishing a connection.
1407 [Rob Percival <robpercival@google.com>]
1409 Changes between 1.0.2g and 1.0.2h [3 May 2016]
1411 *) Prevent padding oracle in AES-NI CBC MAC check
1413 A MITM attacker can use a padding oracle attack to decrypt traffic
1414 when the connection uses an AES CBC cipher and the server support
1417 This issue was introduced as part of the fix for Lucky 13 padding
1418 attack (CVE-2013-0169). The padding check was rewritten to be in
1419 constant time by making sure that always the same bytes are read and
1420 compared against either the MAC or padding bytes. But it no longer
1421 checked that there was enough data to have both the MAC and padding
1424 This issue was reported by Juraj Somorovsky using TLS-Attacker.
1428 *) Fix EVP_EncodeUpdate overflow
1430 An overflow can occur in the EVP_EncodeUpdate() function which is used for
1431 Base64 encoding of binary data. If an attacker is able to supply very large
1432 amounts of input data then a length check can overflow resulting in a heap
1435 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by
1436 the PEM_write_bio* family of functions. These are mainly used within the
1437 OpenSSL command line applications, so any application which processes data
1438 from an untrusted source and outputs it as a PEM file should be considered
1439 vulnerable to this issue. User applications that call these APIs directly
1440 with large amounts of untrusted data may also be vulnerable.
1442 This issue was reported by Guido Vranken.
1446 *) Fix EVP_EncryptUpdate overflow
1448 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker
1449 is able to supply very large amounts of input data after a previous call to
1450 EVP_EncryptUpdate() with a partial block then a length check can overflow
1451 resulting in a heap corruption. Following an analysis of all OpenSSL
1452 internal usage of the EVP_EncryptUpdate() function all usage is one of two
1453 forms. The first form is where the EVP_EncryptUpdate() call is known to be
1454 the first called function after an EVP_EncryptInit(), and therefore that
1455 specific call must be safe. The second form is where the length passed to
1456 EVP_EncryptUpdate() can be seen from the code to be some small value and
1457 therefore there is no possibility of an overflow. Since all instances are
1458 one of these two forms, it is believed that there can be no overflows in
1459 internal code due to this problem. It should be noted that
1460 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths.
1461 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances
1462 of these calls have also been analysed too and it is believed there are no
1463 instances in internal usage where an overflow could occur.
1465 This issue was reported by Guido Vranken.
1469 *) Prevent ASN.1 BIO excessive memory allocation
1471 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio()
1472 a short invalid encoding can cause allocation of large amounts of memory
1473 potentially consuming excessive resources or exhausting memory.
1475 Any application parsing untrusted data through d2i BIO functions is
1476 affected. The memory based functions such as d2i_X509() are *not* affected.
1477 Since the memory based functions are used by the TLS library, TLS
1478 applications are not affected.
1480 This issue was reported by Brian Carpenter.
1486 ASN1 Strings that are over 1024 bytes can cause an overread in applications
1487 using the X509_NAME_oneline() function on EBCDIC systems. This could result
1488 in arbitrary stack data being returned in the buffer.
1490 This issue was reported by Guido Vranken.
1494 *) Modify behavior of ALPN to invoke callback after SNI/servername
1495 callback, such that updates to the SSL_CTX affect ALPN.
1498 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the
1502 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the
1503 methods are enabled and ssl2 is disabled the methods return NULL.
1506 Changes between 1.0.2f and 1.0.2g [1 Mar 2016]
1508 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
1509 Builds that are not configured with "enable-weak-ssl-ciphers" will not
1510 provide any "EXPORT" or "LOW" strength ciphers.
1513 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
1514 is by default disabled at build-time. Builds that are not configured with
1515 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
1516 users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
1517 will need to explicitly call either of:
1519 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
1521 SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
1523 as appropriate. Even if either of those is used, or the application
1524 explicitly uses the version-specific SSLv2_method() or its client and
1525 server variants, SSLv2 ciphers vulnerable to exhaustive search key
1526 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
1527 ciphers, and SSLv2 56-bit DES are no longer available.
1531 *) Fix a double-free in DSA code
1533 A double free bug was discovered when OpenSSL parses malformed DSA private
1534 keys and could lead to a DoS attack or memory corruption for applications
1535 that receive DSA private keys from untrusted sources. This scenario is
1538 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using
1543 *) Disable SRP fake user seed to address a server memory leak.
1545 Add a new method SRP_VBASE_get1_by_user that handles the seed properly.
1547 SRP_VBASE_get_by_user had inconsistent memory management behaviour.
1548 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user
1549 was changed to ignore the "fake user" SRP seed, even if the seed
1552 Users should use SRP_VBASE_get1_by_user instead. Note that in
1553 SRP_VBASE_get1_by_user, caller must free the returned value. Note
1554 also that even though configuring the SRP seed attempts to hide
1555 invalid usernames by continuing the handshake with fake
1556 credentials, this behaviour is not constant time and no strong
1557 guarantees are made that the handshake is indistinguishable from
1558 that of a valid user.
1562 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
1564 In the BN_hex2bn function the number of hex digits is calculated using an
1565 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For
1566 large values of |i| this can result in |bn_expand| not allocating any
1567 memory because |i * 4| is negative. This can leave the internal BIGNUM data
1568 field as NULL leading to a subsequent NULL ptr deref. For very large values
1569 of |i|, the calculation |i * 4| could be a positive value smaller than |i|.
1570 In this case memory is allocated to the internal BIGNUM data field, but it
1571 is insufficiently sized leading to heap corruption. A similar issue exists
1572 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn
1573 is ever called by user applications with very large untrusted hex/dec data.
1574 This is anticipated to be a rare occurrence.
1576 All OpenSSL internal usage of these functions use data that is not expected
1577 to be untrusted, e.g. config file data or application command line
1578 arguments. If user developed applications generate config file data based
1579 on untrusted data then it is possible that this could also lead to security
1580 consequences. This is also anticipated to be rare.
1582 This issue was reported to OpenSSL by Guido Vranken.
1586 *) Fix memory issues in BIO_*printf functions
1588 The internal |fmtstr| function used in processing a "%s" format string in
1589 the BIO_*printf functions could overflow while calculating the length of a
1590 string and cause an OOB read when printing very long strings.
1592 Additionally the internal |doapr_outch| function can attempt to write to an
1593 OOB memory location (at an offset from the NULL pointer) in the event of a
1594 memory allocation failure. In 1.0.2 and below this could be caused where
1595 the size of a buffer to be allocated is greater than INT_MAX. E.g. this
1596 could be in processing a very long "%s" format string. Memory leaks can
1599 The first issue may mask the second issue dependent on compiler behaviour.
1600 These problems could enable attacks where large amounts of untrusted data
1601 is passed to the BIO_*printf functions. If applications use these functions
1602 in this way then they could be vulnerable. OpenSSL itself uses these
1603 functions when printing out human-readable dumps of ASN.1 data. Therefore
1604 applications that print this data could be vulnerable if the data is from
1605 untrusted sources. OpenSSL command line applications could also be
1606 vulnerable where they print out ASN.1 data, or if untrusted data is passed
1607 as command line arguments.
1609 Libssl is not considered directly vulnerable. Additionally certificates etc
1610 received via remote connections via libssl are also unlikely to be able to
1611 trigger these issues because of message size limits enforced within libssl.
1613 This issue was reported to OpenSSL Guido Vranken.
1617 *) Side channel attack on modular exponentiation
1619 A side-channel attack was found which makes use of cache-bank conflicts on
1620 the Intel Sandy-Bridge microarchitecture which could lead to the recovery
1621 of RSA keys. The ability to exploit this issue is limited as it relies on
1622 an attacker who has control of code in a thread running on the same
1623 hyper-threaded core as the victim thread which is performing decryptions.
1625 This issue was reported to OpenSSL by Yuval Yarom, The University of
1626 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and
1627 Nadia Heninger, University of Pennsylvania with more information at
1628 http://cachebleed.info.
1632 *) Change the req app to generate a 2048-bit RSA/DSA key by default,
1633 if no keysize is specified with default_bits. This fixes an
1634 omission in an earlier change that changed all RSA/DSA key generation
1635 apps to use 2048 bits by default.
1638 Changes between 1.0.2e and 1.0.2f [28 Jan 2016]
1639 *) DH small subgroups
1641 Historically OpenSSL only ever generated DH parameters based on "safe"
1642 primes. More recently (in version 1.0.2) support was provided for
1643 generating X9.42 style parameter files such as those required for RFC 5114
1644 support. The primes used in such files may not be "safe". Where an
1645 application is using DH configured with parameters based on primes that are
1646 not "safe" then an attacker could use this fact to find a peer's private
1647 DH exponent. This attack requires that the attacker complete multiple
1648 handshakes in which the peer uses the same private DH exponent. For example
1649 this could be used to discover a TLS server's private DH exponent if it's
1650 reusing the private DH exponent or it's using a static DH ciphersuite.
1652 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in
1653 TLS. It is not on by default. If the option is not set then the server
1654 reuses the same private DH exponent for the life of the server process and
1655 would be vulnerable to this attack. It is believed that many popular
1656 applications do set this option and would therefore not be at risk.
1658 The fix for this issue adds an additional check where a "q" parameter is
1659 available (as is the case in X9.42 based parameters). This detects the
1660 only known attack, and is the only possible defense for static DH
1661 ciphersuites. This could have some performance impact.
1663 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by
1664 default and cannot be disabled. This could have some performance impact.
1666 This issue was reported to OpenSSL by Antonio Sanso (Adobe).
1670 *) SSLv2 doesn't block disabled ciphers
1672 A malicious client can negotiate SSLv2 ciphers that have been disabled on
1673 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have
1674 been disabled, provided that the SSLv2 protocol was not also disabled via
1677 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram
1678 and Sebastian Schinzel.
1682 Changes between 1.0.2d and 1.0.2e [3 Dec 2015]
1684 *) BN_mod_exp may produce incorrect results on x86_64
1686 There is a carry propagating bug in the x86_64 Montgomery squaring
1687 procedure. No EC algorithms are affected. Analysis suggests that attacks
1688 against RSA and DSA as a result of this defect would be very difficult to
1689 perform and are not believed likely. Attacks against DH are considered just
1690 feasible (although very difficult) because most of the work necessary to
1691 deduce information about a private key may be performed offline. The amount
1692 of resources required for such an attack would be very significant and
1693 likely only accessible to a limited number of attackers. An attacker would
1694 additionally need online access to an unpatched system using the target
1695 private key in a scenario with persistent DH parameters and a private
1696 key that is shared between multiple clients. For example this can occur by
1697 default in OpenSSL DHE based SSL/TLS ciphersuites.
1699 This issue was reported to OpenSSL by Hanno Böck.
1703 *) Certificate verify crash with missing PSS parameter
1705 The signature verification routines will crash with a NULL pointer
1706 dereference if presented with an ASN.1 signature using the RSA PSS
1707 algorithm and absent mask generation function parameter. Since these
1708 routines are used to verify certificate signature algorithms this can be
1709 used to crash any certificate verification operation and exploited in a
1710 DoS attack. Any application which performs certificate verification is
1711 vulnerable including OpenSSL clients and servers which enable client
1714 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG).
1718 *) X509_ATTRIBUTE memory leak
1720 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak
1721 memory. This structure is used by the PKCS#7 and CMS routines so any
1722 application which reads PKCS#7 or CMS data from untrusted sources is
1723 affected. SSL/TLS is not affected.
1725 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using
1730 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs.
1731 This changes the decoding behaviour for some invalid messages,
1732 though the change is mostly in the more lenient direction, and
1733 legacy behaviour is preserved as much as possible.
1736 *) In DSA_generate_parameters_ex, if the provided seed is too short,
1738 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>]
1740 Changes between 1.0.2c and 1.0.2d [9 Jul 2015]
1742 *) Alternate chains certificate forgery
1744 During certificate verification, OpenSSL will attempt to find an
1745 alternative certificate chain if the first attempt to build such a chain
1746 fails. An error in the implementation of this logic can mean that an
1747 attacker could cause certain checks on untrusted certificates to be
1748 bypassed, such as the CA flag, enabling them to use a valid leaf
1749 certificate to act as a CA and "issue" an invalid certificate.
1751 This issue was reported to OpenSSL by Adam Langley/David Benjamin
1755 Changes between 1.0.2b and 1.0.2c [12 Jun 2015]
1757 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI
1758 incompatibility in the handling of HMAC. The previous ABI has now been
1762 Changes between 1.0.2a and 1.0.2b [11 Jun 2015]
1764 *) Malformed ECParameters causes infinite loop
1766 When processing an ECParameters structure OpenSSL enters an infinite loop
1767 if the curve specified is over a specially malformed binary polynomial
1770 This can be used to perform denial of service against any
1771 system which processes public keys, certificate requests or
1772 certificates. This includes TLS clients and TLS servers with
1773 client authentication enabled.
1775 This issue was reported to OpenSSL by Joseph Barr-Pixton.
1779 *) Exploitable out-of-bounds read in X509_cmp_time
1781 X509_cmp_time does not properly check the length of the ASN1_TIME
1782 string and can read a few bytes out of bounds. In addition,
1783 X509_cmp_time accepts an arbitrary number of fractional seconds in the
1786 An attacker can use this to craft malformed certificates and CRLs of
1787 various sizes and potentially cause a segmentation fault, resulting in
1788 a DoS on applications that verify certificates or CRLs. TLS clients
1789 that verify CRLs are affected. TLS clients and servers with client
1790 authentication enabled may be affected if they use custom verification
1793 This issue was reported to OpenSSL by Robert Swiecki (Google), and
1794 independently by Hanno Böck.
1798 *) PKCS7 crash with missing EnvelopedContent
1800 The PKCS#7 parsing code does not handle missing inner EncryptedContent
1801 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs
1802 with missing content and trigger a NULL pointer dereference on parsing.
1804 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7
1805 structures from untrusted sources are affected. OpenSSL clients and
1806 servers are not affected.
1808 This issue was reported to OpenSSL by Michal Zalewski (Google).
1812 *) CMS verify infinite loop with unknown hash function
1814 When verifying a signedData message the CMS code can enter an infinite loop
1815 if presented with an unknown hash function OID. This can be used to perform
1816 denial of service against any system which verifies signedData messages using
1818 This issue was reported to OpenSSL by Johannes Bauer.
1822 *) Race condition handling NewSessionTicket
1824 If a NewSessionTicket is received by a multi-threaded client when attempting to
1825 reuse a previous ticket then a race condition can occur potentially leading to
1826 a double free of the ticket data.
1830 *) Only support 256-bit or stronger elliptic curves with the
1831 'ecdh_auto' setting (server) or by default (client). Of supported
1832 curves, prefer P-256 (both).
1835 Changes between 1.0.2 and 1.0.2a [19 Mar 2015]
1837 *) ClientHello sigalgs DoS fix
1839 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an
1840 invalid signature algorithms extension a NULL pointer dereference will
1841 occur. This can be exploited in a DoS attack against the server.
1843 This issue was was reported to OpenSSL by David Ramos of Stanford
1846 [Stephen Henson and Matt Caswell]
1848 *) Multiblock corrupted pointer fix
1850 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This
1851 feature only applies on 64 bit x86 architecture platforms that support AES
1852 NI instructions. A defect in the implementation of "multiblock" can cause
1853 OpenSSL's internal write buffer to become incorrectly set to NULL when
1854 using non-blocking IO. Typically, when the user application is using a
1855 socket BIO for writing, this will only result in a failed connection.
1856 However if some other BIO is used then it is likely that a segmentation
1857 fault will be triggered, thus enabling a potential DoS attack.
1859 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller.
1863 *) Segmentation fault in DTLSv1_listen fix
1865 The DTLSv1_listen function is intended to be stateless and processes the
1866 initial ClientHello from many peers. It is common for user code to loop
1867 over the call to DTLSv1_listen until a valid ClientHello is received with
1868 an associated cookie. A defect in the implementation of DTLSv1_listen means
1869 that state is preserved in the SSL object from one invocation to the next
1870 that can lead to a segmentation fault. Errors processing the initial
1871 ClientHello can trigger this scenario. An example of such an error could be
1872 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only
1875 This issue was reported to OpenSSL by Per Allansson.
1879 *) Segmentation fault in ASN1_TYPE_cmp fix
1881 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is
1882 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check
1883 certificate signature algorithm consistency this can be used to crash any
1884 certificate verification operation and exploited in a DoS attack. Any
1885 application which performs certificate verification is vulnerable including
1886 OpenSSL clients and servers which enable client authentication.
1890 *) Segmentation fault for invalid PSS parameters fix
1892 The signature verification routines will crash with a NULL pointer
1893 dereference if presented with an ASN.1 signature using the RSA PSS
1894 algorithm and invalid parameters. Since these routines are used to verify
1895 certificate signature algorithms this can be used to crash any
1896 certificate verification operation and exploited in a DoS attack. Any
1897 application which performs certificate verification is vulnerable including
1898 OpenSSL clients and servers which enable client authentication.
1900 This issue was was reported to OpenSSL by Brian Carpenter.
1904 *) ASN.1 structure reuse memory corruption fix
1906 Reusing a structure in ASN.1 parsing may allow an attacker to cause
1907 memory corruption via an invalid write. Such reuse is and has been
1908 strongly discouraged and is believed to be rare.
1910 Applications that parse structures containing CHOICE or ANY DEFINED BY
1911 components may be affected. Certificate parsing (d2i_X509 and related
1912 functions) are however not affected. OpenSSL clients and servers are
1917 *) PKCS7 NULL pointer dereferences fix
1919 The PKCS#7 parsing code does not handle missing outer ContentInfo
1920 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with
1921 missing content and trigger a NULL pointer dereference on parsing.
1923 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or
1924 otherwise parse PKCS#7 structures from untrusted sources are
1925 affected. OpenSSL clients and servers are not affected.
1927 This issue was reported to OpenSSL by Michal Zalewski (Google).
1931 *) DoS via reachable assert in SSLv2 servers fix
1933 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in
1934 servers that both support SSLv2 and enable export cipher suites by sending
1935 a specially crafted SSLv2 CLIENT-MASTER-KEY message.
1937 This issue was discovered by Sean Burford (Google) and Emilia Käsper
1938 (OpenSSL development team).
1942 *) Empty CKE with client auth and DHE fix
1944 If client auth is used then a server can seg fault in the event of a DHE
1945 ciphersuite being selected and a zero length ClientKeyExchange message
1946 being sent by the client. This could be exploited in a DoS attack.
1950 *) Handshake with unseeded PRNG fix
1952 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake
1953 with an unseeded PRNG. The conditions are:
1954 - The client is on a platform where the PRNG has not been seeded
1955 automatically, and the user has not seeded manually
1956 - A protocol specific client method version has been used (i.e. not
1957 SSL_client_methodv23)
1958 - A ciphersuite is used that does not require additional random data from
1959 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA).
1961 If the handshake succeeds then the client random that has been used will
1962 have been generated from a PRNG with insufficient entropy and therefore the
1963 output may be predictable.
1965 For example using the following command with an unseeded openssl will
1966 succeed on an unpatched platform:
1968 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA
1972 *) Use After Free following d2i_ECPrivatekey error fix
1974 A malformed EC private key file consumed via the d2i_ECPrivateKey function
1975 could cause a use after free condition. This, in turn, could cause a double
1976 free in several private key parsing functions (such as d2i_PrivateKey
1977 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption
1978 for applications that receive EC private keys from untrusted
1979 sources. This scenario is considered rare.
1981 This issue was discovered by the BoringSSL project and fixed in their
1986 *) X509_to_X509_REQ NULL pointer deref fix
1988 The function X509_to_X509_REQ will crash with a NULL pointer dereference if
1989 the certificate key is invalid. This function is rarely used in practice.
1991 This issue was discovered by Brian Carpenter.
1995 *) Removed the export ciphers from the DEFAULT ciphers
1998 Changes between 1.0.1l and 1.0.2 [22 Jan 2015]
2000 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
2001 ARMv5 through ARMv8, as opposite to "locking" it to single one.
2002 So far those who have to target multiple platforms would compromise
2003 and argue that binary targeting say ARMv5 would still execute on
2004 ARMv8. "Universal" build resolves this compromise by providing
2005 near-optimal performance even on newer platforms.
2008 *) Accelerated NIST P-256 elliptic curve implementation for x86_64
2009 (other platforms pending).
2010 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
2012 *) Add support for the SignedCertificateTimestampList certificate and
2013 OCSP response extensions from RFC6962.
2016 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2017 for corner cases. (Certain input points at infinity could lead to
2018 bogus results, with non-infinity inputs mapped to infinity too.)
2021 *) Initial support for PowerISA 2.0.7, first implemented in POWER8.
2022 This covers AES, SHA256/512 and GHASH. "Initial" means that most
2023 common cases are optimized and there still is room for further
2024 improvements. Vector Permutation AES for Altivec is also added.
2027 *) Add support for little-endian ppc64 Linux target.
2028 [Marcelo Cerri (IBM)]
2030 *) Initial support for AMRv8 ISA crypto extensions. This covers AES,
2031 SHA1, SHA256 and GHASH. "Initial" means that most common cases
2032 are optimized and there still is room for further improvements.
2033 Both 32- and 64-bit modes are supported.
2034 [Andy Polyakov, Ard Biesheuvel (Linaro)]
2036 *) Improved ARMv7 NEON support.
2039 *) Support for SPARC Architecture 2011 crypto extensions, first
2040 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
2041 SHA256/512, MD5, GHASH and modular exponentiation.
2042 [Andy Polyakov, David Miller]
2044 *) Accelerated modular exponentiation for Intel processors, a.k.a.
2046 [Shay Gueron & Vlad Krasnov (Intel Corp)]
2048 *) Support for new and upcoming Intel processors, including AVX2,
2049 BMI and SHA ISA extensions. This includes additional "stitched"
2050 implementations, AESNI-SHA256 and GCM, and multi-buffer support
2053 This work was sponsored by Intel Corp.
2056 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
2057 supports both DTLS 1.2 and 1.0 and should use whatever version the peer
2058 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
2061 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
2062 this fixes a limitation in previous versions of OpenSSL.
2065 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
2066 MGF1 digest and OAEP label.
2069 *) Add EVP support for key wrapping algorithms, to avoid problems with
2070 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
2071 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
2072 algorithms and include tests cases.
2075 *) Add functions to allocate and set the fields of an ECDSA_METHOD
2077 [Douglas E. Engert, Steve Henson]
2079 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
2080 difference in days and seconds between two tm or ASN1_TIME structures.
2083 *) Add -rev test option to s_server to just reverse order of characters
2084 received by client and send back to server. Also prints an abbreviated
2085 summary of the connection parameters.
2088 *) New option -brief for s_client and s_server to print out a brief summary
2089 of connection parameters.
2092 *) Add callbacks for arbitrary TLS extensions.
2093 [Trevor Perrin <trevp@trevp.net> and Ben Laurie]
2095 *) New option -crl_download in several openssl utilities to download CRLs
2096 from CRLDP extension in certificates.
2099 *) New options -CRL and -CRLform for s_client and s_server for CRLs.
2102 *) New function X509_CRL_diff to generate a delta CRL from the difference
2103 of two full CRLs. Add support to "crl" utility.
2106 *) New functions to set lookup_crls function and to retrieve
2107 X509_STORE from X509_STORE_CTX.
2110 *) Print out deprecated issuer and subject unique ID fields in
2114 *) Extend OCSP I/O functions so they can be used for simple general purpose
2115 HTTP as well as OCSP. New wrapper function which can be used to download
2116 CRLs using the OCSP API.
2119 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
2122 *) SSL_CONF* functions. These provide a common framework for application
2123 configuration using configuration files or command lines.
2126 *) SSL/TLS tracing code. This parses out SSL/TLS records using the
2127 message callback and prints the results. Needs compile time option
2128 "enable-ssl-trace". New options to s_client and s_server to enable
2132 *) New ctrl and macro to retrieve supported points extensions.
2133 Print out extension in s_server and s_client.
2136 *) New functions to retrieve certificate signature and signature
2140 *) Add functions to retrieve and manipulate the raw cipherlist sent by a
2144 *) New Suite B modes for TLS code. These use and enforce the requirements
2145 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
2146 only use Suite B curves. The Suite B modes can be set by using the
2147 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
2150 *) New chain verification flags for Suite B levels of security. Check
2151 algorithms are acceptable when flags are set in X509_verify_cert.
2154 *) Make tls1_check_chain return a set of flags indicating checks passed
2155 by a certificate chain. Add additional tests to handle client
2156 certificates: checks for matching certificate type and issuer name
2160 *) If an attempt is made to use a signature algorithm not in the peer
2161 preference list abort the handshake. If client has no suitable
2162 signature algorithms in response to a certificate request do not
2163 use the certificate.
2166 *) If server EC tmp key is not in client preference list abort handshake.
2169 *) Add support for certificate stores in CERT structure. This makes it
2170 possible to have different stores per SSL structure or one store in
2171 the parent SSL_CTX. Include distinct stores for certificate chain
2172 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
2173 to build and store a certificate chain in CERT structure: returning
2174 an error if the chain cannot be built: this will allow applications
2175 to test if a chain is correctly configured.
2177 Note: if the CERT based stores are not set then the parent SSL_CTX
2178 store is used to retain compatibility with existing behaviour.
2182 *) New function ssl_set_client_disabled to set a ciphersuite disabled
2183 mask based on the current session, check mask when sending client
2184 hello and checking the requested ciphersuite.
2187 *) New ctrls to retrieve and set certificate types in a certificate
2188 request message. Print out received values in s_client. If certificate
2189 types is not set with custom values set sensible values based on
2190 supported signature algorithms.
2193 *) Support for distinct client and server supported signature algorithms.
2196 *) Add certificate callback. If set this is called whenever a certificate
2197 is required by client or server. An application can decide which
2198 certificate chain to present based on arbitrary criteria: for example
2199 supported signature algorithms. Add very simple example to s_server.
2200 This fixes many of the problems and restrictions of the existing client
2201 certificate callback: for example you can now clear an existing
2202 certificate and specify the whole chain.
2205 *) Add new "valid_flags" field to CERT_PKEY structure which determines what
2206 the certificate can be used for (if anything). Set valid_flags field
2207 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
2208 to have similar checks in it.
2210 Add new "cert_flags" field to CERT structure and include a "strict mode".
2211 This enforces some TLS certificate requirements (such as only permitting
2212 certificate signature algorithms contained in the supported algorithms
2213 extension) which some implementations ignore: this option should be used
2214 with caution as it could cause interoperability issues.
2217 *) Update and tidy signature algorithm extension processing. Work out
2218 shared signature algorithms based on preferences and peer algorithms
2219 and print them out in s_client and s_server. Abort handshake if no
2220 shared signature algorithms.
2223 *) Add new functions to allow customised supported signature algorithms
2224 for SSL and SSL_CTX structures. Add options to s_client and s_server
2228 *) New function SSL_certs_clear() to delete all references to certificates
2229 from an SSL structure. Before this once a certificate had been added
2230 it couldn't be removed.
2233 *) Integrate hostname, email address and IP address checking with certificate
2234 verification. New verify options supporting checking in openssl utility.
2237 *) Fixes and wildcard matching support to hostname and email checking
2238 functions. Add manual page.
2239 [Florian Weimer (Red Hat Product Security Team)]
2241 *) New functions to check a hostname email or IP address against a
2242 certificate. Add options x509 utility to print results of checks against
2246 *) Fix OCSP checking.
2247 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
2249 *) Initial experimental support for explicitly trusted non-root CAs.
2250 OpenSSL still tries to build a complete chain to a root but if an
2251 intermediate CA has a trust setting included that is used. The first
2252 setting is used: whether to trust (e.g., -addtrust option to the x509
2256 *) Add -trusted_first option which attempts to find certificates in the
2257 trusted store even if an untrusted chain is also supplied.
2260 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
2261 platform support for Linux and Android.
2264 *) Support for linux-x32, ILP32 environment in x86_64 framework.
2267 *) Experimental multi-implementation support for FIPS capable OpenSSL.
2268 When in FIPS mode the approved implementations are used as normal,
2269 when not in FIPS mode the internal unapproved versions are used instead.
2270 This means that the FIPS capable OpenSSL isn't forced to use the
2271 (often lower performance) FIPS implementations outside FIPS mode.
2274 *) Transparently support X9.42 DH parameters when calling
2275 PEM_read_bio_DHparameters. This means existing applications can handle
2276 the new parameter format automatically.
2279 *) Initial experimental support for X9.42 DH parameter format: mainly
2280 to support use of 'q' parameter for RFC5114 parameters.
2283 *) Add DH parameters from RFC5114 including test data to dhtest.
2286 *) Support for automatic EC temporary key parameter selection. If enabled
2287 the most preferred EC parameters are automatically used instead of
2288 hardcoded fixed parameters. Now a server just has to call:
2289 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
2290 support ECDH and use the most appropriate parameters.
2293 *) Enhance and tidy EC curve and point format TLS extension code. Use
2294 static structures instead of allocation if default values are used.
2295 New ctrls to set curves we wish to support and to retrieve shared curves.
2296 Print out shared curves in s_server. New options to s_server and s_client
2297 to set list of supported curves.
2300 *) New ctrls to retrieve supported signature algorithms and
2301 supported curve values as an array of NIDs. Extend openssl utility
2302 to print out received values.
2305 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
2306 between NIDs and the more common NIST names such as "P-256". Enhance
2307 ecparam utility and ECC method to recognise the NIST names for curves.
2310 *) Enhance SSL/TLS certificate chain handling to support different
2311 chains for each certificate instead of one chain in the parent SSL_CTX.
2314 *) Support for fixed DH ciphersuite client authentication: where both
2315 server and client use DH certificates with common parameters.
2318 *) Support for fixed DH ciphersuites: those requiring DH server
2322 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of
2324 Note: Related 1.0.2-beta specific macros X509_get_cert_info,
2325 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
2326 X509_CINF_get_signature were reverted post internal team review.
2328 Changes between 1.0.1k and 1.0.1l [15 Jan 2015]
2330 *) Build fixes for the Windows and OpenVMS platforms
2331 [Matt Caswell and Richard Levitte]
2333 Changes between 1.0.1j and 1.0.1k [8 Jan 2015]
2335 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS
2336 message can cause a segmentation fault in OpenSSL due to a NULL pointer
2337 dereference. This could lead to a Denial Of Service attack. Thanks to
2338 Markus Stenberg of Cisco Systems, Inc. for reporting this issue.
2342 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the
2343 dtls1_buffer_record function under certain conditions. In particular this
2344 could occur if an attacker sent repeated DTLS records with the same
2345 sequence number but for the next epoch. The memory leak could be exploited
2346 by an attacker in a Denial of Service attack through memory exhaustion.
2347 Thanks to Chris Mueller for reporting this issue.
2351 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is
2352 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl
2353 method would be set to NULL which could later result in a NULL pointer
2354 dereference. Thanks to Frank Schmirler for reporting this issue.
2358 *) Abort handshake if server key exchange message is omitted for ephemeral
2361 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
2362 reporting this issue.
2366 *) Remove non-export ephemeral RSA code on client and server. This code
2367 violated the TLS standard by allowing the use of temporary RSA keys in
2368 non-export ciphersuites and could be used by a server to effectively
2369 downgrade the RSA key length used to a value smaller than the server
2370 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
2371 INRIA or reporting this issue.
2375 *) Fixed issue where DH client certificates are accepted without verification.
2376 An OpenSSL server will accept a DH certificate for client authentication
2377 without the certificate verify message. This effectively allows a client to
2378 authenticate without the use of a private key. This only affects servers
2379 which trust a client certificate authority which issues certificates
2380 containing DH keys: these are extremely rare and hardly ever encountered.
2381 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting
2386 *) Ensure that the session ID context of an SSL is updated when its
2387 SSL_CTX is updated via SSL_set_SSL_CTX.
2389 The session ID context is typically set from the parent SSL_CTX,
2390 and can vary with the CTX.
2393 *) Fix various certificate fingerprint issues.
2395 By using non-DER or invalid encodings outside the signed portion of a
2396 certificate the fingerprint can be changed without breaking the signature.
2397 Although no details of the signed portion of the certificate can be changed
2398 this can cause problems with some applications: e.g. those using the
2399 certificate fingerprint for blacklists.
2401 1. Reject signatures with non zero unused bits.
2403 If the BIT STRING containing the signature has non zero unused bits reject
2404 the signature. All current signature algorithms require zero unused bits.
2406 2. Check certificate algorithm consistency.
2408 Check the AlgorithmIdentifier inside TBS matches the one in the
2409 certificate signature. NB: this will result in signature failure
2410 errors for some broken certificates.
2412 Thanks to Konrad Kraszewski from Google for reporting this issue.
2414 3. Check DSA/ECDSA signatures use DER.
2416 Re-encode DSA/ECDSA signatures and compare with the original received
2417 signature. Return an error if there is a mismatch.
2419 This will reject various cases including garbage after signature
2420 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
2421 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
2422 (negative or with leading zeroes).
2424 Further analysis was conducted and fixes were developed by Stephen Henson
2425 of the OpenSSL core team.
2430 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect
2431 results on some platforms, including x86_64. This bug occurs at random
2432 with a very low probability, and is not known to be exploitable in any
2433 way, though its exact impact is difficult to determine. Thanks to Pieter
2434 Wuille (Blockstream) who reported this issue and also suggested an initial
2435 fix. Further analysis was conducted by the OpenSSL development team and
2436 Adam Langley of Google. The final fix was developed by Andy Polyakov of
2437 the OpenSSL core team.
2441 *) Do not resume sessions on the server if the negotiated protocol
2442 version does not match the session's version. Resuming with a different
2443 version, while not strictly forbidden by the RFC, is of questionable
2444 sanity and breaks all known clients.
2445 [David Benjamin, Emilia Käsper]
2447 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject
2448 early CCS messages during renegotiation. (Note that because
2449 renegotiation is encrypted, this early CCS was not exploitable.)
2452 *) Tighten client-side session ticket handling during renegotiation:
2453 ensure that the client only accepts a session ticket if the server sends
2454 the extension anew in the ServerHello. Previously, a TLS client would
2455 reuse the old extension state and thus accept a session ticket if one was
2456 announced in the initial ServerHello.
2458 Similarly, ensure that the client requires a session ticket if one
2459 was advertised in the ServerHello. Previously, a TLS client would
2460 ignore a missing NewSessionTicket message.
2463 Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
2465 *) SRTP Memory Leak.
2467 A flaw in the DTLS SRTP extension parsing code allows an attacker, who
2468 sends a carefully crafted handshake message, to cause OpenSSL to fail
2469 to free up to 64k of memory causing a memory leak. This could be
2470 exploited in a Denial Of Service attack. This issue affects OpenSSL
2471 1.0.1 server implementations for both SSL/TLS and DTLS regardless of
2472 whether SRTP is used or configured. Implementations of OpenSSL that
2473 have been compiled with OPENSSL_NO_SRTP defined are not affected.
2475 The fix was developed by the OpenSSL team.
2479 *) Session Ticket Memory Leak.
2481 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
2482 integrity of that ticket is first verified. In the event of a session
2483 ticket integrity check failing, OpenSSL will fail to free memory
2484 causing a memory leak. By sending a large number of invalid session
2485 tickets an attacker could exploit this issue in a Denial Of Service
2490 *) Build option no-ssl3 is incomplete.
2492 When OpenSSL is configured with "no-ssl3" as a build option, servers
2493 could accept and complete a SSL 3.0 handshake, and clients could be
2494 configured to send them.
2496 [Akamai and the OpenSSL team]
2498 *) Add support for TLS_FALLBACK_SCSV.
2499 Client applications doing fallback retries should call
2500 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
2502 [Adam Langley, Bodo Moeller]
2504 *) Add additional DigestInfo checks.
2506 Re-encode DigestInto in DER and check against the original when
2507 verifying RSA signature: this will reject any improperly encoded
2508 DigestInfo structures.
2510 Note: this is a precautionary measure and no attacks are currently known.
2514 Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
2516 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
2517 SRP code can be overrun an internal buffer. Add sanity check that
2518 g, A, B < N to SRP code.
2520 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
2521 Group for discovering this issue.
2525 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
2526 TLS 1.0 instead of higher protocol versions when the ClientHello message
2527 is badly fragmented. This allows a man-in-the-middle attacker to force a
2528 downgrade to TLS 1.0 even if both the server and the client support a
2529 higher protocol version, by modifying the client's TLS records.
2531 Thanks to David Benjamin and Adam Langley (Google) for discovering and
2532 researching this issue.
2536 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
2537 to a denial of service attack. A malicious server can crash the client
2538 with a null pointer dereference (read) by specifying an anonymous (EC)DH
2539 ciphersuite and sending carefully crafted handshake messages.
2541 Thanks to Felix Gröbert (Google) for discovering and researching this
2546 *) By sending carefully crafted DTLS packets an attacker could cause openssl
2547 to leak memory. This can be exploited through a Denial of Service attack.
2548 Thanks to Adam Langley for discovering and researching this issue.
2552 *) An attacker can force openssl to consume large amounts of memory whilst
2553 processing DTLS handshake messages. This can be exploited through a
2554 Denial of Service attack.
2555 Thanks to Adam Langley for discovering and researching this issue.
2559 *) An attacker can force an error condition which causes openssl to crash
2560 whilst processing DTLS packets due to memory being freed twice. This
2561 can be exploited through a Denial of Service attack.
2562 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
2567 *) If a multithreaded client connects to a malicious server using a resumed
2568 session and the server sends an ec point format extension it could write
2569 up to 255 bytes to freed memory.
2571 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
2576 *) A malicious server can crash an OpenSSL client with a null pointer
2577 dereference (read) by specifying an SRP ciphersuite even though it was not
2578 properly negotiated with the client. This can be exploited through a
2579 Denial of Service attack.
2581 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
2582 discovering and researching this issue.
2586 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as
2587 X509_name_oneline, X509_name_print_ex et al. to leak some information
2588 from the stack. Applications may be affected if they echo pretty printing
2589 output to the attacker.
2591 Thanks to Ivan Fratric (Google) for discovering this issue.
2593 [Emilia Käsper, and Steve Henson]
2595 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
2596 for corner cases. (Certain input points at infinity could lead to
2597 bogus results, with non-infinity inputs mapped to infinity too.)
2600 Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
2602 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
2603 handshake can force the use of weak keying material in OpenSSL
2604 SSL/TLS clients and servers.
2606 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
2607 researching this issue. (CVE-2014-0224)
2608 [KIKUCHI Masashi, Steve Henson]
2610 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
2611 OpenSSL DTLS client the code can be made to recurse eventually crashing
2614 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
2616 [Imre Rad, Steve Henson]
2618 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
2619 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
2620 client or server. This is potentially exploitable to run arbitrary
2621 code on a vulnerable client or server.
2623 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
2624 [Jüri Aedla, Steve Henson]
2626 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
2627 are subject to a denial of service attack.
2629 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
2630 this issue. (CVE-2014-3470)
2631 [Felix Gröbert, Ivan Fratric, Steve Henson]
2633 *) Harmonize version and its documentation. -f flag is used to display
2635 [mancha <mancha1@zoho.com>]
2637 *) Fix eckey_priv_encode so it immediately returns an error upon a failure
2638 in i2d_ECPrivateKey.
2639 [mancha <mancha1@zoho.com>]
2641 *) Fix some double frees. These are not thought to be exploitable.
2642 [mancha <mancha1@zoho.com>]
2644 Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
2646 *) A missing bounds check in the handling of the TLS heartbeat extension
2647 can be used to reveal up to 64k of memory to a connected client or
2650 Thanks for Neel Mehta of Google Security for discovering this bug and to
2651 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
2652 preparing the fix (CVE-2014-0160)
2653 [Adam Langley, Bodo Moeller]
2655 *) Fix for the attack described in the paper "Recovering OpenSSL
2656 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
2657 by Yuval Yarom and Naomi Benger. Details can be obtained from:
2658 http://eprint.iacr.org/2014/140
2660 Thanks to Yuval Yarom and Naomi Benger for discovering this
2661 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
2662 [Yuval Yarom and Naomi Benger]
2664 *) TLS pad extension: draft-agl-tls-padding-03
2666 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
2667 TLS client Hello record length value would otherwise be > 255 and
2668 less that 512 pad with a dummy extension containing zeroes so it
2669 is at least 512 bytes long.
2671 [Adam Langley, Steve Henson]
2673 Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
2675 *) Fix for TLS record tampering bug. A carefully crafted invalid
2676 handshake could crash OpenSSL with a NULL pointer exception.
2677 Thanks to Anton Johansson for reporting this issues.
2680 *) Keep original DTLS digest and encryption contexts in retransmission
2681 structures so we can use the previous session parameters if they need
2682 to be resent. (CVE-2013-6450)
2685 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which
2686 avoids preferring ECDHE-ECDSA ciphers when the client appears to be
2687 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for
2688 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug
2689 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing
2690 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer.
2691 [Rob Stradling, Adam Langley]
2693 Changes between 1.0.1d and 1.0.1e [11 Feb 2013]
2695 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI
2696 supporting platforms or when small records were transferred.
2697 [Andy Polyakov, Steve Henson]
2699 Changes between 1.0.1c and 1.0.1d [5 Feb 2013]
2701 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time.
2703 This addresses the flaw in CBC record processing discovered by
2704 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found
2705 at: http://www.isg.rhul.ac.uk/tls/
2707 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
2708 Security Group at Royal Holloway, University of London
2709 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and
2710 Emilia Käsper for the initial patch.
2712 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson]
2714 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode
2715 ciphersuites which can be exploited in a denial of service attack.
2716 Thanks go to and to Adam Langley <agl@chromium.org> for discovering
2717 and detecting this bug and to Wolfgang Ettlinger
2718 <wolfgang.ettlinger@gmail.com> for independently discovering this issue.
2722 *) Return an error when checking OCSP signatures when key is NULL.
2723 This fixes a DoS attack. (CVE-2013-0166)
2726 *) Make openssl verify return errors.
2727 [Chris Palmer <palmer@google.com> and Ben Laurie]
2729 *) Call OCSP Stapling callback after ciphersuite has been chosen, so
2730 the right response is stapled. Also change SSL_get_certificate()
2731 so it returns the certificate actually sent.
2732 See http://rt.openssl.org/Ticket/Display.html?id=2836.
2733 [Rob Stradling <rob.stradling@comodo.com>]
2735 *) Fix possible deadlock when decoding public keys.
2738 *) Don't use TLS 1.0 record version number in initial client hello
2742 Changes between 1.0.1b and 1.0.1c [10 May 2012]
2744 *) Sanity check record length before skipping explicit IV in TLS
2745 1.2, 1.1 and DTLS to fix DoS attack.
2747 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic
2748 fuzzing as a service testing platform.
2752 *) Initialise tkeylen properly when encrypting CMS messages.
2753 Thanks to Solar Designer of Openwall for reporting this issue.
2756 *) In FIPS mode don't try to use composite ciphers as they are not
2760 Changes between 1.0.1a and 1.0.1b [26 Apr 2012]
2762 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and
2763 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately
2764 mean any application compiled against OpenSSL 1.0.0 headers setting
2765 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disablng
2766 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to
2767 0x10000000L Any application which was previously compiled against
2768 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1
2769 will need to be recompiled as a result. Letting be results in
2770 inability to disable specifically TLS 1.1 and in client context,
2771 in unlike event, limit maximum offered version to TLS 1.0 [see below].
2774 *) In order to ensure interoperabilty SSL_OP_NO_protocolX does not
2775 disable just protocol X, but all protocols above X *if* there are
2776 protocols *below* X still enabled. In more practical terms it means
2777 that if application wants to disable TLS1.0 in favor of TLS1.1 and
2778 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass
2779 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to
2783 Changes between 1.0.1 and 1.0.1a [19 Apr 2012]
2785 *) Check for potentially exploitable overflows in asn1_d2i_read_bio
2786 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer
2787 in CRYPTO_realloc_clean.
2789 Thanks to Tavis Ormandy, Google Security Team, for discovering this
2790 issue and to Adam Langley <agl@chromium.org> for fixing it.
2792 [Adam Langley (Google), Tavis Ormandy, Google Security Team]
2794 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
2797 *) Workarounds for some broken servers that "hang" if a client hello
2798 record length exceeds 255 bytes.
2800 1. Do not use record version number > TLS 1.0 in initial client
2801 hello: some (but not all) hanging servers will now work.
2802 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate
2803 the number of ciphers sent in the client hello. This should be
2804 set to an even number, such as 50, for example by passing:
2805 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure.
2806 Most broken servers should now work.
2807 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable
2808 TLS 1.2 client support entirely.
2811 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH.
2814 Changes between 1.0.0h and 1.0.1 [14 Mar 2012]
2816 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET
2817 STRING form instead of a DigestInfo.
2820 *) The format used for MDC2 RSA signatures is inconsistent between EVP
2821 and the RSA_sign/RSA_verify functions. This was made more apparent when
2822 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular
2823 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect
2824 the correct format in RSA_verify so both forms transparently work.
2827 *) Some servers which support TLS 1.0 can choke if we initially indicate
2828 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA
2829 encrypted premaster secret. As a workaround use the maximum permitted
2830 client version in client hello, this should keep such servers happy
2831 and still work with previous versions of OpenSSL.
2834 *) Add support for TLS/DTLS heartbeats.
2835 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2837 *) Add support for SCTP.
2838 [Robin Seggelmann <seggelmann@fh-muenster.de>]
2840 *) Improved PRNG seeding for VOS.
2841 [Paul Green <Paul.Green@stratus.com>]
2843 *) Extensive assembler packs updates, most notably:
2845 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support;
2846 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES);
2847 - x86_64: bit-sliced AES implementation;
2848 - ARM: NEON support, contemporary platforms optimizations;
2849 - s390x: z196 support;
2850 - *: GHASH and GF(2^m) multiplication implementations;
2854 *) Make TLS-SRP code conformant with RFC 5054 API cleanup
2855 (removal of unnecessary code)
2856 [Peter Sylvester <peter.sylvester@edelweb.fr>]
2858 *) Add TLS key material exporter from RFC 5705.
2861 *) Add DTLS-SRTP negotiation from RFC 5764.
2864 *) Add Next Protocol Negotiation,
2865 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
2866 disabled with a no-npn flag to config or Configure. Code donated
2868 [Adam Langley <agl@google.com> and Ben Laurie]
2870 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224,
2871 NIST-P256, NIST-P521, with constant-time single point multiplication on
2872 typical inputs. Compiler support for the nonstandard type __uint128_t is
2873 required to use this (present in gcc 4.4 and later, for 64-bit builds).
2874 Code made available under Apache License version 2.0.
2876 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command
2877 line to include this in your build of OpenSSL, and run "make depend" (or
2878 "make update"). This enables the following EC_METHODs:
2880 EC_GFp_nistp224_method()
2881 EC_GFp_nistp256_method()
2882 EC_GFp_nistp521_method()
2884 EC_GROUP_new_by_curve_name() will automatically use these (while
2885 EC_GROUP_new_curve_GFp() currently prefers the more flexible
2887 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)]
2889 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
2890 all platforms. Move ssize_t definition from e_os.h to the public
2891 header file e_os2.h as it now appears in public header file cms.h
2894 *) New -sigopt option to the ca, req and x509 utilities. Additional
2895 signature parameters can be passed using this option and in
2899 *) Add RSA PSS signing function. This will generate and set the
2900 appropriate AlgorithmIdentifiers for PSS based on those in the
2901 corresponding EVP_MD_CTX structure. No application support yet.
2904 *) Support for companion algorithm specific ASN1 signing routines.
2905 New function ASN1_item_sign_ctx() signs a pre-initialised
2906 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
2907 the appropriate parameters.
2910 *) Add new algorithm specific ASN1 verification initialisation function
2911 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
2912 handling will be the same no matter what EVP_PKEY_METHOD is used.
2913 Add a PSS handler to support verification of PSS signatures: checked
2914 against a number of sample certificates.
2917 *) Add signature printing for PSS. Add PSS OIDs.
2918 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
2920 *) Add algorithm specific signature printing. An individual ASN1 method
2921 can now print out signatures instead of the standard hex dump.
2923 More complex signatures (e.g. PSS) can print out more meaningful
2924 information. Include DSA version that prints out the signature
2928 *) Password based recipient info support for CMS library: implementing
2932 *) Split password based encryption into PBES2 and PBKDF2 functions. This
2933 neatly separates the code into cipher and PBE sections and is required
2934 for some algorithms that split PBES2 into separate pieces (such as
2935 password based CMS).
2938 *) Session-handling fixes:
2939 - Fix handling of connections that are resuming with a session ID,
2940 but also support Session Tickets.
2941 - Fix a bug that suppressed issuing of a new ticket if the client
2942 presented a ticket with an expired session.
2943 - Try to set the ticket lifetime hint to something reasonable.
2944 - Make tickets shorter by excluding irrelevant information.
2945 - On the client side, don't ignore renewed tickets.
2946 [Adam Langley, Bodo Moeller (Google)]
2948 *) Fix PSK session representation.
2951 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations.
2953 This work was sponsored by Intel.
2956 *) Add GCM support to TLS library. Some custom code is needed to split
2957 the IV between the fixed (from PRF) and explicit (from TLS record)
2958 portions. This adds all GCM ciphersuites supported by RFC5288 and
2959 RFC5289. Generalise some AES* cipherstrings to include GCM and
2960 add a special AESGCM string for GCM only.
2963 *) Expand range of ctrls for AES GCM. Permit setting invocation
2964 field on decrypt and retrieval of invocation field only on encrypt.
2967 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support.
2968 As required by RFC5289 these ciphersuites cannot be used if for
2969 versions of TLS earlier than 1.2.
2972 *) For FIPS capable OpenSSL interpret a NULL default public key method
2973 as unset and return the appropriate default but do *not* set the default.
2974 This means we can return the appropriate method in applications that
2975 switch between FIPS and non-FIPS modes.
2978 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an
2979 ENGINE is used then we cannot handle that in the FIPS module so we
2980 keep original code iff non-FIPS operations are allowed.
2983 *) Add -attime option to openssl utilities.
2984 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson]
2986 *) Redirect DSA and DH operations to FIPS module in FIPS mode.
2989 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use
2990 FIPS EC methods unconditionally for now.
2993 *) New build option no-ec2m to disable characteristic 2 code.
2996 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not
2997 all cases can be covered as some introduce binary incompatibilities.
3000 *) Redirect RSA operations to FIPS module including keygen,
3001 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods.
3004 *) Add similar low level API blocking to ciphers.
3007 *) Low level digest APIs are not approved in FIPS mode: any attempt
3008 to use these will cause a fatal error. Applications that *really* want
3009 to use them can use the private_* version instead.
3012 *) Redirect cipher operations to FIPS module for FIPS builds.
3015 *) Redirect digest operations to FIPS module for FIPS builds.
3018 *) Update build system to add "fips" flag which will link in fipscanister.o
3019 for static and shared library builds embedding a signature if needed.
3022 *) Output TLS supported curves in preference order instead of numerical
3023 order. This is currently hardcoded for the highest order curves first.
3024 This should be configurable so applications can judge speed vs strength.
3027 *) Add TLS v1.2 server support for client authentication.
3030 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers
3034 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying
3035 FIPS modules versions.
3038 *) Add TLS v1.2 client side support for client authentication. Keep cache
3039 of handshake records longer as we don't know the hash algorithm to use
3040 until after the certificate request message is received.
3043 *) Initial TLS v1.2 client support. Add a default signature algorithms
3044 extension including all the algorithms we support. Parse new signature
3045 format in client key exchange. Relax some ECC signing restrictions for
3046 TLS v1.2 as indicated in RFC5246.
3049 *) Add server support for TLS v1.2 signature algorithms extension. Switch
3050 to new signature format when needed using client digest preference.
3051 All server ciphersuites should now work correctly in TLS v1.2. No client
3052 support yet and no support for client certificates.
3055 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch
3056 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based
3057 ciphersuites. At present only RSA key exchange ciphersuites work with
3058 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete
3059 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods
3060 and version checking.
3063 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled
3064 with this defined it will not be affected by any changes to ssl internal
3065 structures. Add several utility functions to allow openssl application
3066 to work with OPENSSL_NO_SSL_INTERN defined.
3069 *) A long standing patch to add support for SRP from EdelWeb (Peter
3070 Sylvester and Christophe Renou) was integrated.
3071 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester
3072 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and
3075 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
3078 *) Permit abbreviated handshakes when renegotiating using the function
3079 SSL_renegotiate_abbreviated().
3080 [Robin Seggelmann <seggelmann@fh-muenster.de>]
3082 *) Add call to ENGINE_register_all_complete() to
3083 ENGINE_load_builtin_engines(), so some implementations get used
3084 automatically instead of needing explicit application support.
3087 *) Add support for TLS key exporter as described in RFC5705.
3088 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
3090 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
3091 a few changes are required:
3093 Add SSL_OP_NO_TLSv1_1 flag.
3094 Add TLSv1_1 methods.
3095 Update version checking logic to handle version 1.1.
3096 Add explicit IV handling (ported from DTLS code).
3097 Add command line options to s_client/s_server.
3100 Changes between 1.0.0g and 1.0.0h [12 Mar 2012]
3102 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness
3103 in CMS and PKCS7 code. When RSA decryption fails use a random key for
3104 content decryption and always return the same error. Note: this attack
3105 needs on average 2^20 messages so it only affects automated senders. The
3106 old behaviour can be re-enabled in the CMS code by setting the
3107 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where
3108 an MMA defence is not necessary.
3109 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering
3110 this issue. (CVE-2012-0884)
3113 *) Fix CVE-2011-4619: make sure we really are receiving a
3114 client hello before rejecting multiple SGC restarts. Thanks to
3115 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug.
3118 Changes between 1.0.0f and 1.0.0g [18 Jan 2012]
3120 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109.
3121 Thanks to Antonio Martin, Enterprise Secure Access Research and
3122 Development, Cisco Systems, Inc. for discovering this bug and
3123 preparing a fix. (CVE-2012-0050)
3126 Changes between 1.0.0e and 1.0.0f [4 Jan 2012]
3128 *) Nadhem Alfardan and Kenny Paterson have discovered an extension
3129 of the Vaudenay padding oracle attack on CBC mode encryption
3130 which enables an efficient plaintext recovery attack against
3131 the OpenSSL implementation of DTLS. Their attack exploits timing
3132 differences arising during decryption processing. A research
3133 paper describing this attack can be found at:
3134 http://www.isg.rhul.ac.uk/~kp/dtls.pdf
3135 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information
3136 Security Group at Royal Holloway, University of London
3137 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann
3138 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de>
3139 for preparing the fix. (CVE-2011-4108)
3140 [Robin Seggelmann, Michael Tuexen]
3142 *) Clear bytes used for block padding of SSL 3.0 records.
3144 [Adam Langley (Google)]
3146 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George
3147 Kadianakis <desnacked@gmail.com> for discovering this issue and
3148 Adam Langley for preparing the fix. (CVE-2011-4619)
3149 [Adam Langley (Google)]
3151 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
3152 [Andrey Kulikov <amdeich@gmail.com>]
3154 *) Prevent malformed RFC3779 data triggering an assertion failure.
3155 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw
3156 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577)
3157 [Rob Austein <sra@hactrn.net>]
3159 *) Improved PRNG seeding for VOS.
3160 [Paul Green <Paul.Green@stratus.com>]
3162 *) Fix ssl_ciph.c set-up race.
3163 [Adam Langley (Google)]
3165 *) Fix spurious failures in ecdsatest.c.
3166 [Emilia Käsper (Google)]
3168 *) Fix the BIO_f_buffer() implementation (which was mixing different
3169 interpretations of the '..._len' fields).
3170 [Adam Langley (Google)]
3172 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
3173 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
3174 threads won't reuse the same blinding coefficients.
3176 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING
3177 lock to call BN_BLINDING_invert_ex, and avoids one use of
3178 BN_BLINDING_update for each BN_BLINDING structure (previously,
3179 the last update always remained unused).
3180 [Emilia Käsper (Google)]
3182 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf.
3183 [Bob Buckholz (Google)]
3185 Changes between 1.0.0d and 1.0.0e [6 Sep 2011]
3187 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted
3188 by initialising X509_STORE_CTX properly. (CVE-2011-3207)
3189 [Kaspar Brand <ossl@velox.ch>]
3191 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular
3192 for multi-threaded use of ECDH. (CVE-2011-3210)
3193 [Adam Langley (Google)]
3195 *) Fix x509_name_ex_d2i memory leak on bad inputs.
3198 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check
3199 signature public key algorithm by using OID xref utilities instead.
3200 Before this you could only use some ECC ciphersuites with SHA1 only.
3203 *) Add protection against ECDSA timing attacks as mentioned in the paper
3204 by Billy Bob Brumley and Nicola Tuveri, see:
3206 http://eprint.iacr.org/2011/232.pdf
3208 [Billy Bob Brumley and Nicola Tuveri]
3210 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
3212 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
3213 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
3215 *) Fix bug in string printing code: if *any* escaping is enabled we must
3216 escape the escape character (backslash) or the resulting string is
3220 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
3222 *) Disable code workaround for ancient and obsolete Netscape browsers
3223 and servers: an attacker can use it in a ciphersuite downgrade attack.
3224 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
3227 *) Fixed J-PAKE implementation error, originally discovered by
3228 Sebastien Martini, further info and confirmation from Stefan
3229 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
3232 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
3234 *) Fix extension code to avoid race conditions which can result in a buffer
3235 overrun vulnerability: resumed sessions must not be modified as they can
3236 be shared by multiple threads. CVE-2010-3864
3239 *) Fix WIN32 build system to correctly link an ENGINE directory into
3243 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
3245 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
3247 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
3249 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
3251 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
3252 context. The operation can be customised via the ctrl mechanism in
3253 case ENGINEs want to include additional functionality.
3256 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
3259 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
3260 output hashes compatible with older versions of OpenSSL.
3261 [Willy Weisz <weisz@vcpc.univie.ac.at>]
3263 *) Fix compression algorithm handling: if resuming a session use the
3264 compression algorithm of the resumed session instead of determining
3265 it from client hello again. Don't allow server to change algorithm.
3268 *) Add load_crls() function to apps tidying load_certs() too. Add option
3269 to verify utility to allow additional CRLs to be included.
3272 *) Update OCSP request code to permit adding custom headers to the request:
3273 some responders need this.
3276 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
3278 [Julia Lawall <julia@diku.dk>]
3280 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
3281 needlessly dereferenced structures, used obsolete functions and
3282 didn't handle all updated verify codes correctly.
3285 *) Disable MD2 in the default configuration.
3288 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
3289 indicate the initial BIO being pushed or popped. This makes it possible
3290 to determine whether the BIO is the one explicitly called or as a result
3291 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
3292 it handles reference counts correctly and doesn't zero out the I/O bio
3293 when it is not being explicitly popped. WARNING: applications which
3294 included workarounds for the old buggy behaviour will need to be modified
3295 or they could free up already freed BIOs.
3298 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
3299 renaming to all platforms (within the 0.9.8 branch, this was
3300 done conditionally on Netware platforms to avoid a name clash).
3301 [Guenter <lists@gknw.net>]
3303 *) Add ECDHE and PSK support to DTLS.
3304 [Michael Tuexen <tuexen@fh-muenster.de>]
3306 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
3310 *) Add "missing" function EVP_MD_flags() (without this the only way to
3311 retrieve a digest flags is by accessing the structure directly. Update
3312 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
3313 or cipher is registered as in the "from" argument. Print out all
3314 registered digests in the dgst usage message instead of manually
3315 attempting to work them out.
3318 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
3319 this allows the use of compression and extensions. Change default cipher
3320 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
3321 by default unless an application cipher string requests it.
3324 *) Alter match criteria in PKCS12_parse(). It used to try to use local
3325 key ids to find matching certificates and keys but some PKCS#12 files
3326 don't follow the (somewhat unwritten) rules and this strategy fails.
3327 Now just gather all certificates together and the first private key
3328 then look for the first certificate that matches the key.
3331 *) Support use of registered digest and cipher names for dgst and cipher
3332 commands instead of having to add each one as a special case. So now
3339 openssl dgst -sha256 foo
3341 and this works for ENGINE based algorithms too.
3345 *) Update Gost ENGINE to support parameter files.
3346 [Victor B. Wagner <vitus@cryptocom.ru>]
3348 *) Support GeneralizedTime in ca utility.
3349 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
3351 *) Enhance the hash format used for certificate directory links. The new
3352 form uses the canonical encoding (meaning equivalent names will work
3353 even if they aren't identical) and uses SHA1 instead of MD5. This form
3354 is incompatible with the older format and as a result c_rehash should
3355 be used to rebuild symbolic links.
3358 *) Make PKCS#8 the default write format for private keys, replacing the
3359 traditional format. This form is standardised, more secure and doesn't
3360 include an implicit MD5 dependency.
3363 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
3364 committed to OpenSSL should pass this lot as a minimum.
3367 *) Add session ticket override functionality for use by EAP-FAST.
3368 [Jouni Malinen <j@w1.fi>]
3370 *) Modify HMAC functions to return a value. Since these can be implemented
3371 in an ENGINE errors can occur.
3374 *) Type-checked OBJ_bsearch_ex.
3377 *) Type-checked OBJ_bsearch. Also some constification necessitated
3378 by type-checking. Still to come: TXT_DB, bsearch(?),
3379 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
3383 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
3384 seconds to a tm structure directly, instead of going through OS
3385 specific date routines. This avoids any issues with OS routines such
3386 as the year 2038 bug. New *_adj() functions for ASN1 time structures
3387 and X509_time_adj_ex() to cover the extended range. The existing
3388 X509_time_adj() is still usable and will no longer have any date issues.
3391 *) Delta CRL support. New use deltas option which will attempt to locate
3392 and search any appropriate delta CRLs available.
3394 This work was sponsored by Google.
3397 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
3398 code and add additional score elements. Validate alternate CRL paths
3399 as part of the CRL checking and indicate a new error "CRL path validation
3400 error" in this case. Applications wanting additional details can use
3401 the verify callback and check the new "parent" field. If this is not
3402 NULL CRL path validation is taking place. Existing applications won't
3403 see this because it requires extended CRL support which is off by
3406 This work was sponsored by Google.
3409 *) Support for freshest CRL extension.
3411 This work was sponsored by Google.
3414 *) Initial indirect CRL support. Currently only supported in the CRLs
3415 passed directly and not via lookup. Process certificate issuer
3416 CRL entry extension and lookup CRL entries by bother issuer name
3417 and serial number. Check and process CRL issuer entry in IDP extension.
3419 This work was sponsored by Google.
3422 *) Add support for distinct certificate and CRL paths. The CRL issuer
3423 certificate is validated separately in this case. Only enabled if
3424 an extended CRL support flag is set: this flag will enable additional
3425 CRL functionality in future.
3427 This work was sponsored by Google.
3430 *) Add support for policy mappings extension.
3432 This work was sponsored by Google.
3435 *) Fixes to pathlength constraint, self issued certificate handling,
3436 policy processing to align with RFC3280 and PKITS tests.
3438 This work was sponsored by Google.
3441 *) Support for name constraints certificate extension. DN, email, DNS
3442 and URI types are currently supported.
3444 This work was sponsored by Google.
3447 *) To cater for systems that provide a pointer-based thread ID rather
3448 than numeric, deprecate the current numeric thread ID mechanism and
3449 replace it with a structure and associated callback type. This
3450 mechanism allows a numeric "hash" to be extracted from a thread ID in
3451 either case, and on platforms where pointers are larger than 'long',
3452 mixing is done to help ensure the numeric 'hash' is usable even if it
3453 can't be guaranteed unique. The default mechanism is to use "&errno"
3454 as a pointer-based thread ID to distinguish between threads.
3456 Applications that want to provide their own thread IDs should now use
3457 CRYPTO_THREADID_set_callback() to register a callback that will call
3458 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
3460 Note that ERR_remove_state() is now deprecated, because it is tied
3461 to the assumption that thread IDs are numeric. ERR_remove_state(0)
3462 to free the current thread's error state should be replaced by
3463 ERR_remove_thread_state(NULL).
3465 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
3466 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
3467 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
3468 application was previously providing a numeric thread callback that
3469 was inappropriate for distinguishing threads, then uniqueness might
3470 have been obtained with &errno that happened immediately in the
3471 intermediate development versions of OpenSSL; this is no longer the
3472 case, the numeric thread callback will now override the automatic use
3474 [Geoff Thorpe, with help from Bodo Moeller]
3476 *) Initial support for different CRL issuing certificates. This covers a
3477 simple case where the self issued certificates in the chain exist and
3478 the real CRL issuer is higher in the existing chain.
3480 This work was sponsored by Google.
3483 *) Removed effectively defunct crypto/store from the build.
3486 *) Revamp of STACK to provide stronger type-checking. Still to come:
3487 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
3488 ASN1_STRING, CONF_VALUE.
3491 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
3492 RAM on SSL connections. This option can save about 34k per idle SSL.
3495 *) Revamp of LHASH to provide stronger type-checking. Still to come:
3496 STACK, TXT_DB, bsearch, qsort.
3499 *) Initial support for Cryptographic Message Syntax (aka CMS) based
3500 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
3501 support for data, signedData, compressedData, digestedData and
3502 encryptedData, envelopedData types included. Scripts to check against
3503 RFC4134 examples draft and interop and consistency checks of many
3504 content types and variants.
3507 *) Add options to enc utility to support use of zlib compression BIO.
3510 *) Extend mk1mf to support importing of options and assembly language
3511 files from Configure script, currently only included in VC-WIN32.
3512 The assembly language rules can now optionally generate the source
3513 files from the associated perl scripts.
3516 *) Implement remaining functionality needed to support GOST ciphersuites.
3517 Interop testing has been performed using CryptoPro implementations.
3518 [Victor B. Wagner <vitus@cryptocom.ru>]
3520 *) s390x assembler pack.
3523 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
3527 *) Implement Opaque PRF Input TLS extension as specified in
3528 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
3529 official specification yet and no extension type assignment by
3530 IANA exists, this extension (for now) will have to be explicitly
3531 enabled when building OpenSSL by providing the extension number
3532 to use. For example, specify an option
3534 -DTLSEXT_TYPE_opaque_prf_input=0x9527
3536 to the "config" or "Configure" script to enable the extension,
3537 assuming extension number 0x9527 (which is a completely arbitrary
3538 and unofficial assignment based on the MD5 hash of the Internet
3539 Draft). Note that by doing so, you potentially lose
3540 interoperability with other TLS implementations since these might
3541 be using the same extension number for other purposes.
3543 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
3544 opaque PRF input value to use in the handshake. This will create
3545 an interal copy of the length-'len' string at 'src', and will
3546 return non-zero for success.
3548 To get more control and flexibility, provide a callback function
3551 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
3552 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
3556 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
3559 Callback function 'cb' will be called in handshakes, and is
3560 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
3561 Argument 'arg' is for application purposes (the value as given to
3562 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
3563 be provided to the callback function). The callback function
3564 has to return non-zero to report success: usually 1 to use opaque
3565 PRF input just if possible, or 2 to enforce use of the opaque PRF
3566 input. In the latter case, the library will abort the handshake
3567 if opaque PRF input is not successfully negotiated.
3569 Arguments 'peerinput' and 'len' given to the callback function
3570 will always be NULL and 0 in the case of a client. A server will
3571 see the client's opaque PRF input through these variables if
3572 available (NULL and 0 otherwise). Note that if the server
3573 provides an opaque PRF input, the length must be the same as the
3574 length of the client's opaque PRF input.
3576 Note that the callback function will only be called when creating
3577 a new session (session resumption can resume whatever was
3578 previously negotiated), and will not be called in SSL 2.0
3579 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
3580 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
3581 for applications that need to enforce opaque PRF input.
3585 *) Update ssl code to support digests other than SHA1+MD5 for handshake
3588 [Victor B. Wagner <vitus@cryptocom.ru>]
3590 *) Add RFC4507 support to OpenSSL. This includes the corrections in
3591 RFC4507bis. The encrypted ticket format is an encrypted encoded
3592 SSL_SESSION structure, that way new session features are automatically
3595 If a client application caches session in an SSL_SESSION structure
3596 support is transparent because tickets are now stored in the encoded
3599 The SSL_CTX structure automatically generates keys for ticket
3600 protection in servers so again support should be possible
3601 with no application modification.
3603 If a client or server wishes to disable RFC4507 support then the option
3604 SSL_OP_NO_TICKET can be set.
3606 Add a TLS extension debugging callback to allow the contents of any client
3607 or server extensions to be examined.
3609 This work was sponsored by Google.
3612 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
3613 OpenSSL should now compile cleanly on gcc 4.2
3614 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
3616 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
3617 support including streaming MAC support: this is required for GOST
3618 ciphersuite support.
3619 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
3621 *) Add option -stream to use PKCS#7 streaming in smime utility. New
3622 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
3623 to output in BER and PEM format.
3626 *) Experimental support for use of HMAC via EVP_PKEY interface. This
3627 allows HMAC to be handled via the EVP_DigestSign*() interface. The
3628 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
3629 ENGINE support for HMAC keys which are unextractable. New -mac and
3630 -macopt options to dgst utility.
3633 *) New option -sigopt to dgst utility. Update dgst to use
3634 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
3635 alternative signing parameters such as X9.31 or PSS in the dgst
3639 *) Change ssl_cipher_apply_rule(), the internal function that does
3640 the work each time a ciphersuite string requests enabling
3641 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
3642 removing ("!foo+bar") a class of ciphersuites: Now it maintains
3643 the order of disabled ciphersuites such that those ciphersuites
3644 that most recently went from enabled to disabled not only stay
3645 in order with respect to each other, but also have higher priority
3646 than other disabled ciphersuites the next time ciphersuites are
3649 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
3650 the same ciphersuites as with "HIGH" alone, but in a specific
3651 order where the PSK ciphersuites come first (since they are the
3652 most recently disabled ciphersuites when "HIGH" is parsed).
3654 Also, change ssl_create_cipher_list() (using this new
3655 funcionality) such that between otherwise identical
3656 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
3660 *) Change ssl_create_cipher_list() so that it automatically
3661 arranges the ciphersuites in reasonable order before starting
3662 to process the rule string. Thus, the definition for "DEFAULT"
3663 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
3664 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
3665 This makes it much easier to arrive at a reasonable default order
3666 in applications for which anonymous ciphers are OK (meaning
3667 that you can't actually use DEFAULT).
3668 [Bodo Moeller; suggested by Victor Duchovni]
3670 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
3671 processing) into multiple integers instead of setting
3672 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
3673 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
3674 (These masks as well as the individual bit definitions are hidden
3675 away into the non-exported interface ssl/ssl_locl.h, so this
3676 change to the definition of the SSL_CIPHER structure shouldn't
3677 affect applications.) This give us more bits for each of these
3678 categories, so there is no longer a need to coagulate AES128 and
3679 AES256 into a single algorithm bit, and to coagulate Camellia128
3680 and Camellia256 into a single algorithm bit, which has led to all
3683 Thus, among other things, the kludge introduced in 0.9.7m and
3684 0.9.8e for masking out AES256 independently of AES128 or masking
3685 out Camellia256 independently of AES256 is not needed here in 0.9.9.
3687 With the change, we also introduce new ciphersuite aliases that
3688 so far were missing: "AES128", "AES256", "CAMELLIA128", and
3692 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
3693 Use the leftmost N bytes of the signature input if the input is
3694 larger than the prime q (with N being the size in bytes of q).
3697 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
3698 it yet and it is largely untested.
3701 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
3704 *) Initial incomplete changes to avoid need for function casts in OpenSSL
3705 some compilers (gcc 4.2 and later) reject their use. Safestack is
3706 reimplemented. Update ASN1 to avoid use of legacy functions.
3709 *) Win32/64 targets are linked with Winsock2.
3712 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
3713 to external functions. This can be used to increase CRL handling
3714 efficiency especially when CRLs are very large by (for example) storing
3715 the CRL revoked certificates in a database.
3718 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
3719 new CRLs added to a directory can be used. New command line option
3720 -verify_return_error to s_client and s_server. This causes real errors
3721 to be returned by the verify callback instead of carrying on no matter
3722 what. This reflects the way a "real world" verify callback would behave.
3725 *) GOST engine, supporting several GOST algorithms and public key formats.
3726 Kindly donated by Cryptocom.
3729 *) Partial support for Issuing Distribution Point CRL extension. CRLs
3730 partitioned by DP are handled but no indirect CRL or reason partitioning
3731 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
3732 selected via a scoring technique which handles IDP and AKID in CRLs.
3735 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
3736 will ultimately be used for all verify operations: this will remove the
3737 X509_STORE dependency on certificate verification and allow alternative
3738 lookup methods. X509_STORE based implementations of these two callbacks.
3741 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
3742 Modify get_crl() to find a valid (unexpired) CRL if possible.
3745 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
3746 this would be called X509_CRL_cmp() but that name is already used by
3747 a function that just compares CRL issuer names. Cache several CRL
3748 extensions in X509_CRL structure and cache CRLDP in X509.
3751 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
3752 this maps equivalent X509_NAME structures into a consistent structure.
3753 Name comparison can then be performed rapidly using memcmp().
3756 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
3760 *) Allow digests to supply their own micalg string for S/MIME type using
3761 the ctrl EVP_MD_CTRL_MICALG.
3764 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
3765 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
3766 ctrl. It can then customise the structure before and/or after signing
3770 *) New function OBJ_add_sigid() to allow application defined signature OIDs
3771 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
3772 to free up any added signature OIDs.
3775 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
3776 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
3777 digest and cipher tables. New options added to openssl utility:
3778 list-message-digest-algorithms and list-cipher-algorithms.
3781 *) Change the array representation of binary polynomials: the list
3782 of degrees of non-zero coefficients is now terminated with -1.
3783 Previously it was terminated with 0, which was also part of the
3784 value; thus, the array representation was not applicable to
3785 polynomials where t^0 has coefficient zero. This change makes
3786 the array representation useful in a more general context.
3789 *) Various modifications and fixes to SSL/TLS cipher string
3790 handling. For ECC, the code now distinguishes between fixed ECDH
3791 with RSA certificates on the one hand and with ECDSA certificates
3792 on the other hand, since these are separate ciphersuites. The
3793 unused code for Fortezza ciphersuites has been removed.
3795 For consistency with EDH, ephemeral ECDH is now called "EECDH"
3796 (not "ECDHE"). For consistency with the code for DH
3797 certificates, use of ECDH certificates is now considered ECDH
3798 authentication, not RSA or ECDSA authentication (the latter is
3799 merely the CA's signing algorithm and not actively used in the
3802 The temporary ciphersuite alias "ECCdraft" is no longer
3803 available, and ECC ciphersuites are no longer excluded from "ALL"
3804 and "DEFAULT". The following aliases now exist for RFC 4492
3805 ciphersuites, most of these by analogy with the DH case:
3807 kECDHr - ECDH cert, signed with RSA
3808 kECDHe - ECDH cert, signed with ECDSA
3809 kECDH - ECDH cert (signed with either RSA or ECDSA)
3810 kEECDH - ephemeral ECDH
3811 ECDH - ECDH cert or ephemeral ECDH
3817 AECDH - anonymous ECDH
3818 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
3822 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
3823 Use correct micalg parameters depending on digest(s) in signed message.
3826 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
3827 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
3830 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
3831 an engine to register a method. Add ENGINE lookups for methods and
3832 functional reference processing.
3835 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
3836 EVP_{Sign,Verify}* which allow an application to customise the signature
3840 *) New -resign option to smime utility. This adds one or more signers
3841 to an existing PKCS#7 signedData structure. Also -md option to use an
3842 alternative message digest algorithm for signing.
3845 *) Tidy up PKCS#7 routines and add new functions to make it easier to
3846 create PKCS7 structures containing multiple signers. Update smime
3847 application to support multiple signers.
3850 *) New -macalg option to pkcs12 utility to allow setting of an alternative
3854 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
3855 Reorganize PBE internals to lookup from a static table using NIDs,
3856 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
3857 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
3858 PRF which will be automatically used with PBES2.
3861 *) Replace the algorithm specific calls to generate keys in "req" with the
3865 *) Update PKCS#7 enveloped data routines to use new API. This is now
3866 supported by any public key method supporting the encrypt operation. A
3867 ctrl is added to allow the public key algorithm to examine or modify
3868 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
3872 *) Add a ctrl to asn1 method to allow a public key algorithm to express
3873 a default digest type to use. In most cases this will be SHA1 but some
3874 algorithms (such as GOST) need to specify an alternative digest. The
3875 return value indicates how strong the preference is 1 means optional and
3876 2 is mandatory (that is it is the only supported type). Modify
3877 ASN1_item_sign() to accept a NULL digest argument to indicate it should
3878 use the default md. Update openssl utilities to use the default digest
3879 type for signing if it is not explicitly indicated.
3882 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
3883 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
3884 signing method from the key type. This effectively removes the link
3885 between digests and public key types.
3888 *) Add an OID cross reference table and utility functions. Its purpose is to
3889 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
3890 rsaEncryption. This will allow some of the algorithm specific hackery
3891 needed to use the correct OID to be removed.
3894 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
3895 structures for PKCS7_sign(). They are now set up by the relevant public
3899 *) Add provisional EC pkey method with support for ECDSA and ECDH.
3902 *) Add support for key derivation (agreement) in the API, DH method and
3906 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
3907 public and private key formats. As a side effect these add additional
3908 command line functionality not previously available: DSA signatures can be
3909 generated and verified using pkeyutl and DH key support and generation in
3914 [Oliver Tappe <zooey@hirschkaefer.de>]
3916 *) New make target "install_html_docs" installs HTML renditions of the
3918 [Oliver Tappe <zooey@hirschkaefer.de>]
3920 *) New utility "genpkey" this is analogous to "genrsa" etc except it can
3921 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
3922 support key and parameter generation and add initial key generation
3923 functionality for RSA.
3926 *) Add functions for main EVP_PKEY_method operations. The undocumented
3927 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
3928 EVP_PKEY_{encrypt,decrypt}_old.
3931 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
3932 key API, doesn't do much yet.
3935 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
3936 public key algorithms. New option to openssl utility:
3937 "list-public-key-algorithms" to print out info.
3940 *) Implement the Supported Elliptic Curves Extension for
3941 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3944 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
3945 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
3948 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
3949 utilities such as rsa, dsa, dsaparam etc except they process any key
3953 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
3954 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
3955 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
3959 *) Initial support for pluggable public key ASN1.
3960 De-spaghettify the public key ASN1 handling. Move public and private
3961 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
3962 algorithm specific handling to a single module within the relevant
3963 algorithm directory. Add functions to allow (near) opaque processing
3964 of public and private key structures.
3967 *) Implement the Supported Point Formats Extension for
3968 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
3971 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
3972 for the psk identity [hint] and the psk callback functions to the
3973 SSL_SESSION, SSL and SSL_CTX structure.
3976 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
3980 SSL_CTX_use_psk_identity_hint
3981 SSL_get_psk_identity_hint
3982 SSL_get_psk_identity
3983 SSL_use_psk_identity_hint
3985 [Mika Kousa and Pasi Eronen of Nokia Corporation]
3987 *) Add RFC 3161 compliant time stamp request creation, response generation
3988 and response verification functionality.
3989 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
3991 *) Add initial support for TLS extensions, specifically for the server_name
3992 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
3993 have new members for a host name. The SSL data structure has an
3994 additional member SSL_CTX *initial_ctx so that new sessions can be
3995 stored in that context to allow for session resumption, even after the
3996 SSL has been switched to a new SSL_CTX in reaction to a client's
3997 server_name extension.
3999 New functions (subject to change):
4001 SSL_get_servername()
4002 SSL_get_servername_type()
4005 New CTRL codes and macros (subject to change):
4007 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4008 - SSL_CTX_set_tlsext_servername_callback()
4009 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4010 - SSL_CTX_set_tlsext_servername_arg()
4011 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4013 openssl s_client has a new '-servername ...' option.
4015 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4016 '-key2 ...', '-servername_fatal' (subject to change). This allows
4017 testing the HostName extension for a specific single host name ('-cert'
4018 and '-key' remain fallbacks for handshakes without HostName
4019 negotiation). If the unrecognized_name alert has to be sent, this by
4020 default is a warning; it becomes fatal with the '-servername_fatal'
4023 [Peter Sylvester, Remy Allais, Christophe Renou]
4025 *) Whirlpool hash implementation is added.
4028 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
4029 bn(64,32). Because of instruction set limitations it doesn't have
4030 any negative impact on performance. This was done mostly in order
4031 to make it possible to share assembler modules, such as bn_mul_mont
4032 implementations, between 32- and 64-bit builds without hassle.
4035 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
4036 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
4040 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
4041 dedicated Montgomery multiplication procedure, is introduced.
4042 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
4043 "64-bit" performance on certain 32-bit targets.
4046 *) New option SSL_OP_NO_COMP to disable use of compression selectively
4047 in SSL structures. New SSL ctrl to set maximum send fragment size.
4048 Save memory by seeting the I/O buffer sizes dynamically instead of
4049 using the maximum available value.
4052 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
4053 in addition to the text details.
4056 *) Very, very preliminary EXPERIMENTAL support for printing of general
4057 ASN1 structures. This currently produces rather ugly output and doesn't
4058 handle several customised structures at all.
4061 *) Integrated support for PVK file format and some related formats such
4062 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
4063 these in the 'rsa' and 'dsa' utilities.
4066 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
4069 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
4070 place for the (very old) "NETSCAPE" format certificates which are now
4071 handled using new ASN1 code equivalents.
4074 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
4075 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
4076 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
4079 *) Modify CRL distribution points extension code to print out previously
4080 unsupported fields. Enhance extension setting code to allow setting of
4084 *) Add print and set support for Issuing Distribution Point CRL extension.
4087 *) Change 'Configure' script to enable Camellia by default.
4090 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
4092 *) When rejecting SSL/TLS records due to an incorrect version number, never
4093 update s->server with a new major version number. As of
4094 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
4095 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
4096 the previous behavior could result in a read attempt at NULL when
4097 receiving specific incorrect SSL/TLS records once record payload
4098 protection is active. (CVE-2010-0740)
4099 [Bodo Moeller, Adam Langley <agl@chromium.org>]
4101 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
4102 could be crashed if the relevant tables were not present (e.g. chrooted).
4103 [Tomas Hoger <thoger@redhat.com>]
4105 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
4107 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
4108 [Martin Olsson, Neel Mehta]
4110 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
4111 accommodate for stack sorting, always a write lock!).
4114 *) On some versions of WIN32 Heap32Next is very slow. This can cause
4115 excessive delays in the RAND_poll(): over a minute. As a workaround
4116 include a time check in the inner Heap32Next loop too.
4119 *) The code that handled flushing of data in SSL/TLS originally used the
4120 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
4121 the problem outlined in PR#1949. The fix suggested there however can
4122 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
4123 of Apache). So instead simplify the code to flush unconditionally.
4124 This should be fine since flushing with no data to flush is a no op.
4127 *) Handle TLS versions 2.0 and later properly and correctly use the
4128 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
4129 off ancient servers have a habit of sticking around for a while...
4132 *) Modify compression code so it frees up structures without using the
4133 ex_data callbacks. This works around a problem where some applications
4134 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
4135 restarting) then use compression (e.g. SSL with compression) later.
4136 This results in significant per-connection memory leaks and
4137 has caused some security issues including CVE-2008-1678 and
4141 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
4142 change when encrypting or decrypting.
4145 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
4146 connect and renegotiate with servers which do not support RI.
4147 Until RI is more widely deployed this option is enabled by default.
4150 *) Add "missing" ssl ctrls to clear options and mode.
4153 *) If client attempts to renegotiate and doesn't support RI respond with
4154 a no_renegotiation alert as required by RFC5746. Some renegotiating
4155 TLS clients will continue a connection gracefully when they receive
4156 the alert. Unfortunately OpenSSL mishandled this alert and would hang
4157 waiting for a server hello which it will never receive. Now we treat a
4158 received no_renegotiation alert as a fatal error. This is because
4159 applications requesting a renegotiation might well expect it to succeed
4160 and would have no code in place to handle the server denying it so the
4161 only safe thing to do is to terminate the connection.
4164 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
4165 peer supports secure renegotiation and 0 otherwise. Print out peer
4166 renegotiation support in s_client/s_server.
4169 *) Replace the highly broken and deprecated SPKAC certification method with
4170 the updated NID creation version. This should correctly handle UTF8.
4173 *) Implement RFC5746. Re-enable renegotiation but require the extension
4174 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
4175 turns out to be a bad idea. It has been replaced by
4176 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
4177 SSL_CTX_set_options(). This is really not recommended unless you
4178 know what you are doing.
4179 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
4181 *) Fixes to stateless session resumption handling. Use initial_ctx when
4182 issuing and attempting to decrypt tickets in case it has changed during
4183 servername handling. Use a non-zero length session ID when attempting
4184 stateless session resumption: this makes it possible to determine if
4185 a resumption has occurred immediately after receiving server hello
4186 (several places in OpenSSL subtly assume this) instead of later in
4190 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
4191 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
4192 fixes for a few places where the return code is not checked
4194 [Julia Lawall <julia@diku.dk>]
4196 *) Add --strict-warnings option to Configure script to include devteam
4197 warnings in other configurations.
4200 *) Add support for --libdir option and LIBDIR variable in makefiles. This
4201 makes it possible to install openssl libraries in locations which
4202 have names other than "lib", for example "/usr/lib64" which some
4204 [Steve Henson, based on patch from Jeremy Utley]
4206 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
4207 X690 8.9.12 and can produce some misleading textual output of OIDs.
4208 [Steve Henson, reported by Dan Kaminsky]
4210 *) Delete MD2 from algorithm tables. This follows the recommendation in
4211 several standards that it is not used in new applications due to
4212 several cryptographic weaknesses. For binary compatibility reasons
4213 the MD2 API is still compiled in by default.
4216 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
4220 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
4221 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
4223 [Guenter <lists@gknw.net>]
4225 *) Fix the server certificate chain building code to use X509_verify_cert(),
4226 it used to have an ad-hoc builder which was unable to cope with anything
4227 other than a simple chain.
4228 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
4230 *) Don't check self signed certificate signatures in X509_verify_cert()
4231 by default (a flag can override this): it just wastes time without
4232 adding any security. As a useful side effect self signed root CAs
4233 with non-FIPS digests are now usable in FIPS mode.
4236 *) In dtls1_process_out_of_seq_message() the check if the current message
4237 is already buffered was missing. For every new message was memory
4238 allocated, allowing an attacker to perform an denial of service attack
4239 with sending out of seq handshake messages until there is no memory
4240 left. Additionally every future messege was buffered, even if the
4241 sequence number made no sense and would be part of another handshake.
4242 So only messages with sequence numbers less than 10 in advance will be
4243 buffered. (CVE-2009-1378)
4244 [Robin Seggelmann, discovered by Daniel Mentz]
4246 *) Records are buffered if they arrive with a future epoch to be
4247 processed after finishing the corresponding handshake. There is
4248 currently no limitation to this buffer allowing an attacker to perform
4249 a DOS attack with sending records with future epochs until there is no
4250 memory left. This patch adds the pqueue_size() function to determine
4251 the size of a buffer and limits the record buffer to 100 entries.
4253 [Robin Seggelmann, discovered by Daniel Mentz]
4255 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
4256 parent structure is freed. (CVE-2009-1379)
4259 *) Handle non-blocking I/O properly in SSL_shutdown() call.
4260 [Darryl Miles <darryl-mailinglists@netbauds.net>]
4263 [Ilya O. <vrghost@gmail.com>]
4265 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
4267 *) Disable renegotiation completely - this fixes a severe security
4268 problem (CVE-2009-3555) at the cost of breaking all
4269 renegotiation. Renegotiation can be re-enabled by setting
4270 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
4271 run-time. This is really not recommended unless you know what
4275 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
4277 *) Don't set val to NULL when freeing up structures, it is freed up by
4278 underlying code. If sizeof(void *) > sizeof(long) this can result in
4279 zeroing past the valid field. (CVE-2009-0789)
4280 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
4282 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
4283 checked correctly. This would allow some invalid signed attributes to
4284 appear to verify correctly. (CVE-2009-0591)
4285 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4287 *) Reject UniversalString and BMPString types with invalid lengths. This
4288 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
4289 a legal length. (CVE-2009-0590)
4292 *) Set S/MIME signing as the default purpose rather than setting it
4293 unconditionally. This allows applications to override it at the store
4297 *) Permit restricted recursion of ASN1 strings. This is needed in practice
4298 to handle some structures.
4301 *) Improve efficiency of mem_gets: don't search whole buffer each time
4303 [Jeremy Shapiro <jnshapir@us.ibm.com>]
4305 *) New -hex option for openssl rand.
4308 *) Print out UTF8String and NumericString when parsing ASN1.
4311 *) Support NumericString type for name components.
4314 *) Allow CC in the environment to override the automatically chosen
4315 compiler. Note that nothing is done to ensure flags work with the
4319 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
4321 *) Properly check EVP_VerifyFinal() and similar return values
4323 [Ben Laurie, Bodo Moeller, Google Security Team]
4325 *) Enable TLS extensions by default.
4328 *) Allow the CHIL engine to be loaded, whether the application is
4329 multithreaded or not. (This does not release the developer from the
4330 obligation to set up the dynamic locking callbacks.)
4331 [Sander Temme <sander@temme.net>]
4333 *) Use correct exit code if there is an error in dgst command.
4334 [Steve Henson; problem pointed out by Roland Dirlewanger]
4336 *) Tweak Configure so that you need to say "experimental-jpake" to enable
4337 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
4340 *) Add experimental JPAKE support, including demo authentication in
4341 s_client and s_server.
4344 *) Set the comparison function in v3_addr_canonize().
4345 [Rob Austein <sra@hactrn.net>]
4347 *) Add support for XMPP STARTTLS in s_client.
4348 [Philip Paeps <philip@freebsd.org>]
4350 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
4351 to ensure that even with this option, only ciphersuites in the
4352 server's preference list will be accepted. (Note that the option
4353 applies only when resuming a session, so the earlier behavior was
4354 just about the algorithm choice for symmetric cryptography.)
4357 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
4359 *) Fix NULL pointer dereference if a DTLS server received
4360 ChangeCipherSpec as first record (CVE-2009-1386).
4363 *) Fix a state transition in s3_srvr.c and d1_srvr.c
4364 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
4367 *) The fix in 0.9.8c that supposedly got rid of unsafe
4368 double-checked locking was incomplete for RSA blinding,
4369 addressing just one layer of what turns out to have been
4370 doubly unsafe triple-checked locking.
4372 So now fix this for real by retiring the MONT_HELPER macro
4373 in crypto/rsa/rsa_eay.c.
4375 [Bodo Moeller; problem pointed out by Marius Schilder]
4377 *) Various precautionary measures:
4379 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
4381 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
4382 (NB: This would require knowledge of the secret session ticket key
4383 to exploit, in which case you'd be SOL either way.)
4385 - Change bn_nist.c so that it will properly handle input BIGNUMs
4386 outside the expected range.
4388 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
4391 [Neel Mehta, Bodo Moeller]
4393 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
4394 the load fails. Useful for distros.
4395 [Ben Laurie and the FreeBSD team]
4397 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
4400 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
4403 *) Expand ENGINE to support engine supplied SSL client certificate functions.
4405 This work was sponsored by Logica.
4408 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
4409 keystores. Support for SSL/TLS client authentication too.
4410 Not compiled unless enable-capieng specified to Configure.
4412 This work was sponsored by Logica.
4415 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using
4416 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
4417 attribute creation routines such as certificate requests and PKCS#12
4421 Changes between 0.9.8g and 0.9.8h [28 May 2008]
4423 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
4424 handshake which could lead to a cilent crash as found using the
4425 Codenomicon TLS test suite (CVE-2008-1672)
4426 [Steve Henson, Mark Cox]
4428 *) Fix double free in TLS server name extensions which could lead to
4429 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
4432 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
4434 Clear the error queue to ensure that error entries left from
4435 older function calls do not interfere with the correct operation.
4436 [Lutz Jaenicke, Erik de Castro Lopo]
4438 *) Remove root CA certificates of commercial CAs:
4440 The OpenSSL project does not recommend any specific CA and does not
4441 have any policy with respect to including or excluding any CA.
4442 Therefore it does not make any sense to ship an arbitrary selection
4443 of root CA certificates with the OpenSSL software.
4446 *) RSA OAEP patches to fix two separate invalid memory reads.
4447 The first one involves inputs when 'lzero' is greater than
4448 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
4449 before the beginning of from). The second one involves inputs where
4450 the 'db' section contains nothing but zeroes (there is a one-byte
4451 invalid read after the end of 'db').
4452 [Ivan Nestlerode <inestlerode@us.ibm.com>]
4454 *) Partial backport from 0.9.9-dev:
4456 Introduce bn_mul_mont (dedicated Montgomery multiplication
4457 procedure) as a candidate for BIGNUM assembler implementation.
4458 While 0.9.9-dev uses assembler for various architectures, only
4459 x86_64 is available by default here in the 0.9.8 branch, and
4460 32-bit x86 is available through a compile-time setting.
4462 To try the 32-bit x86 assembler implementation, use Configure
4463 option "enable-montasm" (which exists only for this backport).
4465 As "enable-montasm" for 32-bit x86 disclaims code stability
4466 anyway, in this constellation we activate additional code
4467 backported from 0.9.9-dev for further performance improvements,
4468 namely BN_from_montgomery_word. (To enable this otherwise,
4469 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
4471 [Andy Polyakov (backport partially by Bodo Moeller)]
4473 *) Add TLS session ticket callback. This allows an application to set
4474 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
4475 values. This is useful for key rollover for example where several key
4476 sets may exist with different names.
4479 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
4480 This was broken until now in 0.9.8 releases, such that the only way
4481 a registered ENGINE could be used (assuming it initialises
4482 successfully on the host) was to explicitly set it as the default
4483 for the relevant algorithms. This is in contradiction with 0.9.7
4484 behaviour and the documentation. With this fix, when an ENGINE is
4485 registered into a given algorithm's table of implementations, the
4486 'uptodate' flag is reset so that auto-discovery will be used next
4487 time a new context for that algorithm attempts to select an
4489 [Ian Lister (tweaked by Geoff Thorpe)]
4491 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
4492 implementation in the following ways:
4494 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
4497 Lack of BER streaming support means one pass streaming processing is
4498 only supported if data is detached: setting the streaming flag is
4499 ignored for embedded content.
4501 CMS support is disabled by default and must be explicitly enabled
4502 with the enable-cms configuration option.
4505 *) Update the GMP engine glue to do direct copies between BIGNUM and
4506 mpz_t when openssl and GMP use the same limb size. Otherwise the
4507 existing "conversion via a text string export" trick is still used.
4508 [Paul Sheer <paulsheer@gmail.com>]
4510 *) Zlib compression BIO. This is a filter BIO which compressed and
4511 uncompresses any data passed through it.
4514 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
4515 RFC3394 compatible AES key wrapping.
4518 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
4519 sets string data without copying. X509_ALGOR_set0() and
4520 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
4521 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
4522 from an X509_ATTRIBUTE structure optionally checking it occurs only
4523 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
4527 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
4528 to get the expected BN_FLG_CONSTTIME behavior.
4529 [Bodo Moeller (Google)]
4533 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
4534 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
4535 - added some more tests to do_tests.pl
4536 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
4537 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
4538 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
4539 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
4540 - various changes to netware.pl to enable gcc-cross builds on Win32
4542 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
4543 - various changes to fix missing prototype warnings
4544 - fixed x86nasm.pl to create correct asm files for NASM COFF output
4545 - added AES, WHIRLPOOL and CPUID assembler code to build files
4546 - added missing AES assembler make rules to mk1mf.pl
4547 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
4548 [Guenter Knauf <eflash@gmx.net>]
4550 *) Implement certificate status request TLS extension defined in RFC3546.
4551 A client can set the appropriate parameters and receive the encoded
4552 OCSP response via a callback. A server can query the supplied parameters
4553 and set the encoded OCSP response in the callback. Add simplified examples
4554 to s_client and s_server.
4557 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
4559 *) Fix various bugs:
4560 + Binary incompatibility of ssl_ctx_st structure
4561 + DTLS interoperation with non-compliant servers
4562 + Don't call get_session_cb() without proposed session
4563 + Fix ia64 assembler code
4564 [Andy Polyakov, Steve Henson]
4566 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
4568 *) DTLS Handshake overhaul. There were longstanding issues with
4569 OpenSSL DTLS implementation, which were making it impossible for
4570 RFC 4347 compliant client to communicate with OpenSSL server.
4571 Unfortunately just fixing these incompatibilities would "cut off"
4572 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
4573 server keeps tolerating non RFC compliant syntax. The opposite is
4574 not true, 0.9.8f client can not communicate with earlier server.
4575 This update even addresses CVE-2007-4995.
4578 *) Changes to avoid need for function casts in OpenSSL: some compilers
4579 (gcc 4.2 and later) reject their use.
4580 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
4583 *) Add RFC4507 support to OpenSSL. This includes the corrections in
4584 RFC4507bis. The encrypted ticket format is an encrypted encoded
4585 SSL_SESSION structure, that way new session features are automatically
4588 If a client application caches session in an SSL_SESSION structure
4589 support is transparent because tickets are now stored in the encoded
4592 The SSL_CTX structure automatically generates keys for ticket
4593 protection in servers so again support should be possible
4594 with no application modification.
4596 If a client or server wishes to disable RFC4507 support then the option
4597 SSL_OP_NO_TICKET can be set.
4599 Add a TLS extension debugging callback to allow the contents of any client
4600 or server extensions to be examined.
4602 This work was sponsored by Google.
4605 *) Add initial support for TLS extensions, specifically for the server_name
4606 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
4607 have new members for a host name. The SSL data structure has an
4608 additional member SSL_CTX *initial_ctx so that new sessions can be
4609 stored in that context to allow for session resumption, even after the
4610 SSL has been switched to a new SSL_CTX in reaction to a client's
4611 server_name extension.
4613 New functions (subject to change):
4615 SSL_get_servername()
4616 SSL_get_servername_type()
4619 New CTRL codes and macros (subject to change):
4621 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
4622 - SSL_CTX_set_tlsext_servername_callback()
4623 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
4624 - SSL_CTX_set_tlsext_servername_arg()
4625 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
4627 openssl s_client has a new '-servername ...' option.
4629 openssl s_server has new options '-servername_host ...', '-cert2 ...',
4630 '-key2 ...', '-servername_fatal' (subject to change). This allows
4631 testing the HostName extension for a specific single host name ('-cert'
4632 and '-key' remain fallbacks for handshakes without HostName
4633 negotiation). If the unrecognized_name alert has to be sent, this by
4634 default is a warning; it becomes fatal with the '-servername_fatal'
4637 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
4639 *) Add AES and SSE2 assembly language support to VC++ build.
4642 *) Mitigate attack on final subtraction in Montgomery reduction.
4645 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
4646 (which previously caused an internal error).
4649 *) Squeeze another 10% out of IGE mode when in != out.
4652 *) AES IGE mode speedup.
4653 [Dean Gaudet (Google)]
4655 *) Add the Korean symmetric 128-bit cipher SEED (see
4656 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
4657 add SEED ciphersuites from RFC 4162:
4659 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
4660 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
4661 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
4662 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
4664 To minimize changes between patchlevels in the OpenSSL 0.9.8
4665 series, SEED remains excluded from compilation unless OpenSSL
4666 is configured with 'enable-seed'.
4667 [KISA, Bodo Moeller]
4669 *) Mitigate branch prediction attacks, which can be practical if a
4670 single processor is shared, allowing a spy process to extract
4671 information. For detailed background information, see
4672 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
4673 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
4674 and Necessary Software Countermeasures"). The core of the change
4675 are new versions BN_div_no_branch() and
4676 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
4677 respectively, which are slower, but avoid the security-relevant
4678 conditional branches. These are automatically called by BN_div()
4679 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
4680 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
4681 remove a conditional branch.
4683 BN_FLG_CONSTTIME is the new name for the previous
4684 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
4685 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
4686 in the exponent causes BN_mod_exp_mont() to use the alternative
4687 implementation in BN_mod_exp_mont_consttime().) The old name
4688 remains as a deprecated alias.
4690 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
4691 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
4692 constant-time implementations for more than just exponentiation.
4693 Here too the old name is kept as a deprecated alias.
4695 BN_BLINDING_new() will now use BN_dup() for the modulus so that
4696 the BN_BLINDING structure gets an independent copy of the
4697 modulus. This means that the previous "BIGNUM *m" argument to
4698 BN_BLINDING_new() and to BN_BLINDING_create_param() now
4699 essentially becomes "const BIGNUM *m", although we can't actually
4700 change this in the header file before 0.9.9. It allows
4701 RSA_setup_blinding() to use BN_with_flags() on the modulus to
4702 enable BN_FLG_CONSTTIME.
4704 [Matthew D Wood (Intel Corp)]
4706 *) In the SSL/TLS server implementation, be strict about session ID
4707 context matching (which matters if an application uses a single
4708 external cache for different purposes). Previously,
4709 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
4710 set. This did ensure strict client verification, but meant that,
4711 with applications using a single external cache for quite
4712 different requirements, clients could circumvent ciphersuite
4713 restrictions for a given session ID context by starting a session
4714 in a different context.
4717 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
4718 a ciphersuite string such as "DEFAULT:RSA" cannot enable
4719 authentication-only ciphersuites.
4722 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
4723 not complete and could lead to a possible single byte overflow
4724 (CVE-2007-5135) [Ben Laurie]
4726 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
4728 *) Since AES128 and AES256 (and similarly Camellia128 and
4729 Camellia256) share a single mask bit in the logic of
4730 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
4731 kludge to work properly if AES128 is available and AES256 isn't
4732 (or if Camellia128 is available and Camellia256 isn't).
4735 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
4736 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
4737 When a point or a seed is encoded in a BIT STRING, we need to
4738 prevent the removal of trailing zero bits to get the proper DER
4739 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
4740 of a NamedBitList, for which trailing 0 bits need to be removed.)
4743 *) Have SSL/TLS server implementation tolerate "mismatched" record
4744 protocol version while receiving ClientHello even if the
4745 ClientHello is fragmented. (The server can't insist on the
4746 particular protocol version it has chosen before the ServerHello
4747 message has informed the client about his choice.)
4750 *) Add RFC 3779 support.
4751 [Rob Austein for ARIN, Ben Laurie]
4753 *) Load error codes if they are not already present instead of using a
4754 static variable. This allows them to be cleanly unloaded and reloaded.
4755 Improve header file function name parsing.
4758 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
4759 or CAPABILITY handshake as required by RFCs.
4762 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
4764 *) Introduce limits to prevent malicious keys being able to
4765 cause a denial of service. (CVE-2006-2940)
4766 [Steve Henson, Bodo Moeller]
4768 *) Fix ASN.1 parsing of certain invalid structures that can result
4769 in a denial of service. (CVE-2006-2937) [Steve Henson]
4771 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
4772 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
4774 *) Fix SSL client code which could crash if connecting to a
4775 malicious SSLv2 server. (CVE-2006-4343)
4776 [Tavis Ormandy and Will Drewry, Google Security Team]
4778 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
4779 match only those. Before that, "AES256-SHA" would be interpreted
4780 as a pattern and match "AES128-SHA" too (since AES128-SHA got
4781 the same strength classification in 0.9.7h) as we currently only
4782 have a single AES bit in the ciphersuite description bitmap.
4783 That change, however, also applied to ciphersuite strings such as
4784 "RC4-MD5" that intentionally matched multiple ciphersuites --
4785 namely, SSL 2.0 ciphersuites in addition to the more common ones
4786 from SSL 3.0/TLS 1.0.
4788 So we change the selection algorithm again: Naming an explicit
4789 ciphersuite selects this one ciphersuite, and any other similar
4790 ciphersuite (same bitmap) from *other* protocol versions.
4791 Thus, "RC4-MD5" again will properly select both the SSL 2.0
4792 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
4794 Since SSL 2.0 does not have any ciphersuites for which the
4795 128/256 bit distinction would be relevant, this works for now.
4796 The proper fix will be to use different bits for AES128 and
4797 AES256, which would have avoided the problems from the beginning;
4798 however, bits are scarce, so we can only do this in a new release
4799 (not just a patchlevel) when we can change the SSL_CIPHER
4800 definition to split the single 'unsigned long mask' bitmap into
4801 multiple values to extend the available space.
4805 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
4807 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
4808 (CVE-2006-4339) [Ben Laurie and Google Security Team]
4810 *) Add AES IGE and biIGE modes.
4813 *) Change the Unix randomness entropy gathering to use poll() when
4814 possible instead of select(), since the latter has some
4815 undesirable limitations.
4816 [Darryl Miles via Richard Levitte and Bodo Moeller]
4818 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
4819 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
4820 cannot be implicitly activated as part of, e.g., the "AES" alias.
4821 However, please upgrade to OpenSSL 0.9.9[-dev] for
4822 non-experimental use of the ECC ciphersuites to get TLS extension
4823 support, which is required for curve and point format negotiation
4824 to avoid potential handshake problems.
4827 *) Disable rogue ciphersuites:
4829 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
4830 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
4831 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
4833 The latter two were purportedly from
4834 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
4837 Also deactivate the remaining ciphersuites from
4838 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
4839 unofficial, and the ID has long expired.
4842 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
4843 dual-core machines) and other potential thread-safety issues.
4846 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
4847 versions), which is now available for royalty-free use
4848 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
4849 Also, add Camellia TLS ciphersuites from RFC 4132.
4851 To minimize changes between patchlevels in the OpenSSL 0.9.8
4852 series, Camellia remains excluded from compilation unless OpenSSL
4853 is configured with 'enable-camellia'.
4856 *) Disable the padding bug check when compression is in use. The padding
4857 bug check assumes the first packet is of even length, this is not
4858 necessarily true if compresssion is enabled and can result in false
4859 positives causing handshake failure. The actual bug test is ancient
4860 code so it is hoped that implementations will either have fixed it by
4861 now or any which still have the bug do not support compression.
4864 Changes between 0.9.8a and 0.9.8b [04 May 2006]
4866 *) When applying a cipher rule check to see if string match is an explicit
4867 cipher suite and only match that one cipher suite if it is.
4870 *) Link in manifests for VC++ if needed.
4871 [Austin Ziegler <halostatue@gmail.com>]
4873 *) Update support for ECC-based TLS ciphersuites according to
4874 draft-ietf-tls-ecc-12.txt with proposed changes (but without
4875 TLS extensions, which are supported starting with the 0.9.9
4876 branch, not in the OpenSSL 0.9.8 branch).
4879 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
4880 opaque EVP_CIPHER_CTX handling.
4883 *) Fixes and enhancements to zlib compression code. We now only use
4884 "zlib1.dll" and use the default __cdecl calling convention on Win32
4885 to conform with the standards mentioned here:
4886 http://www.zlib.net/DLL_FAQ.txt
4887 Static zlib linking now works on Windows and the new --with-zlib-include
4888 --with-zlib-lib options to Configure can be used to supply the location
4889 of the headers and library. Gracefully handle case where zlib library
4893 *) Several fixes and enhancements to the OID generation code. The old code
4894 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
4895 handle numbers larger than ULONG_MAX, truncated printing and had a
4896 non standard OBJ_obj2txt() behaviour.
4899 *) Add support for building of engines under engine/ as shared libraries
4900 under VC++ build system.
4903 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
4904 Hopefully, we will not see any false combination of paths any more.
4907 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
4909 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
4910 (part of SSL_OP_ALL). This option used to disable the
4911 countermeasure against man-in-the-middle protocol-version
4912 rollback in the SSL 2.0 server implementation, which is a bad
4913 idea. (CVE-2005-2969)
4915 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
4916 for Information Security, National Institute of Advanced Industrial
4917 Science and Technology [AIST], Japan)]
4919 *) Add two function to clear and return the verify parameter flags.
4922 *) Keep cipherlists sorted in the source instead of sorting them at
4923 runtime, thus removing the need for a lock.
4926 *) Avoid some small subgroup attacks in Diffie-Hellman.
4927 [Nick Mathewson and Ben Laurie]
4929 *) Add functions for well-known primes.
4932 *) Extended Windows CE support.
4933 [Satoshi Nakamura and Andy Polyakov]
4935 *) Initialize SSL_METHOD structures at compile time instead of during
4936 runtime, thus removing the need for a lock.
4939 *) Make PKCS7_decrypt() work even if no certificate is supplied by
4940 attempting to decrypt each encrypted key in turn. Add support to
4944 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
4946 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
4949 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
4952 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
4953 key into the same file any more.
4956 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
4959 *) Add -utf8 command line and config file option to 'ca'.
4960 [Stefan <stf@udoma.org]
4962 *) Removed the macro des_crypt(), as it seems to conflict with some
4963 libraries. Use DES_crypt().
4966 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
4967 involves renaming the source and generated shared-libs for
4968 both. The engines will accept the corrected or legacy ids
4969 ('ncipher' and '4758_cca' respectively) when binding. NB,
4970 this only applies when building 'shared'.
4971 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
4973 *) Add attribute functions to EVP_PKEY structure. Modify
4974 PKCS12_create() to recognize a CSP name attribute and
4975 use it. Make -CSP option work again in pkcs12 utility.
4978 *) Add new functionality to the bn blinding code:
4979 - automatic re-creation of the BN_BLINDING parameters after
4980 a fixed number of uses (currently 32)
4981 - add new function for parameter creation
4982 - introduce flags to control the update behaviour of the
4983 BN_BLINDING parameters
4984 - hide BN_BLINDING structure
4985 Add a second BN_BLINDING slot to the RSA structure to improve
4986 performance when a single RSA object is shared among several
4990 *) Add support for DTLS.
4991 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
4993 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
4994 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
4997 *) Remove buggy and incomplete DH cert support from
4998 ssl/ssl_rsa.c and ssl/s3_both.c
5001 *) Use SHA-1 instead of MD5 as the default digest algorithm for
5002 the apps/openssl applications.
5005 *) Compile clean with "-Wall -Wmissing-prototypes
5006 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
5007 DEBUG_SAFESTACK must also be set.
5010 *) Change ./Configure so that certain algorithms can be disabled by default.
5011 The new counterpiece to "no-xxx" is "enable-xxx".
5013 The patented RC5 and MDC2 algorithms will now be disabled unless
5014 "enable-rc5" and "enable-mdc2", respectively, are specified.
5016 (IDEA remains enabled despite being patented. This is because IDEA
5017 is frequently required for interoperability, and there is no license
5018 fee for non-commercial use. As before, "no-idea" can be used to
5019 avoid this algorithm.)
5023 *) Add processing of proxy certificates (see RFC 3820). This work was
5024 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
5025 EGEE (Enabling Grids for E-science in Europe).
5028 *) RC4 performance overhaul on modern architectures/implementations, such
5029 as Intel P4, IA-64 and AMD64.
5032 *) New utility extract-section.pl. This can be used specify an alternative
5033 section number in a pod file instead of having to treat each file as
5034 a separate case in Makefile. This can be done by adding two lines to the
5037 =for comment openssl_section:XXX
5039 The blank line is mandatory.
5043 *) New arguments -certform, -keyform and -pass for s_client and s_server
5044 to allow alternative format key and certificate files and passphrase
5048 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
5049 update associated structures and add various utility functions.
5051 Add new policy related verify parameters, include policy checking in
5052 standard verify code. Enhance 'smime' application with extra parameters
5053 to support policy checking and print out.
5056 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
5057 Nehemiah processors. These extensions support AES encryption in hardware
5058 as well as RNG (though RNG support is currently disabled).
5059 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
5061 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
5064 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
5065 [Andy Polyakov and a number of other people]
5067 *) Improved PowerPC platform support. Most notably BIGNUM assembler
5068 implementation contributed by IBM.
5069 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
5071 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
5072 exponent rather than 'unsigned long'. There is a corresponding change to
5073 the new 'rsa_keygen' element of the RSA_METHOD structure.
5074 [Jelte Jansen, Geoff Thorpe]
5076 *) Functionality for creating the initial serial number file is now
5077 moved from CA.pl to the 'ca' utility with a new option -create_serial.
5079 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
5080 number file to 1, which is bound to cause problems. To avoid
5081 the problems while respecting compatibility between different 0.9.7
5082 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
5083 CA.pl for serial number initialization. With the new release 0.9.8,
5084 we can fix the problem directly in the 'ca' utility.)
5087 *) Reduced header interdepencies by declaring more opaque objects in
5088 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
5089 give fewer recursive includes, which could break lazy source code - so
5090 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
5091 developers should define this symbol when building and using openssl to
5092 ensure they track the recommended behaviour, interfaces, [etc], but
5093 backwards-compatible behaviour prevails when this isn't defined.
5096 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
5099 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
5100 This will generate a random key of the appropriate length based on the
5101 cipher context. The EVP_CIPHER can provide its own random key generation
5102 routine to support keys of a specific form. This is used in the des and
5103 3des routines to generate a key of the correct parity. Update S/MIME
5104 code to use new functions and hence generate correct parity DES keys.
5105 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
5106 valid (weak or incorrect parity).
5109 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
5110 as looking them up. This is useful when the verified structure may contain
5111 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
5112 present unless the new PKCS7_NO_CRL flag is asserted.
5115 *) Extend ASN1 oid configuration module. It now additionally accepts the
5118 shortName = some long name, 1.2.3.4
5121 *) Reimplemented the BN_CTX implementation. There is now no more static
5122 limitation on the number of variables it can handle nor the depth of the
5123 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
5124 information can now expand as required, and rather than having a single
5125 static array of bignums, BN_CTX now uses a linked-list of such arrays
5126 allowing it to expand on demand whilst maintaining the usefulness of
5127 BN_CTX's "bundling".
5130 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
5131 to allow all RSA operations to function using a single BN_CTX.
5134 *) Preliminary support for certificate policy evaluation and checking. This
5135 is initially intended to pass the tests outlined in "Conformance Testing
5136 of Relying Party Client Certificate Path Processing Logic" v1.07.
5139 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
5140 remained unused and not that useful. A variety of other little bignum
5141 tweaks and fixes have also been made continuing on from the audit (see
5145 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
5146 associated ASN1, EVP and SSL functions and old ASN1 macros.
5149 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
5150 and this should never fail. So the return value from the use of
5151 BN_set_word() (which can fail due to needless expansion) is now deprecated;
5152 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
5155 *) BN_CTX_get() should return zero-valued bignums, providing the same
5156 initialised value as BN_new().
5157 [Geoff Thorpe, suggested by Ulf Möller]
5159 *) Support for inhibitAnyPolicy certificate extension.
5162 *) An audit of the BIGNUM code is underway, for which debugging code is
5163 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
5164 is considered valid when processing BIGNUMs, and causes execution to
5165 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
5166 further steps are taken to deliberately pollute unused data in BIGNUM
5167 structures to try and expose faulty code further on. For now, openssl will
5168 (in its default mode of operation) continue to tolerate the inconsistent
5169 forms that it has tolerated in the past, but authors and packagers should
5170 consider trying openssl and their own applications when compiled with
5171 these debugging symbols defined. It will help highlight potential bugs in
5172 their own code, and will improve the test coverage for OpenSSL itself. At
5173 some point, these tighter rules will become openssl's default to improve
5174 maintainability, though the assert()s and other overheads will remain only
5175 in debugging configurations. See bn.h for more details.
5176 [Geoff Thorpe, Nils Larsch, Ulf Möller]
5178 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
5179 that can only be obtained through BN_CTX_new() (which implicitly
5180 initialises it). The presence of this function only made it possible
5181 to overwrite an existing structure (and cause memory leaks).
5184 *) Because of the callback-based approach for implementing LHASH as a
5185 template type, lh_insert() adds opaque objects to hash-tables and
5186 lh_doall() or lh_doall_arg() are typically used with a destructor callback
5187 to clean up those corresponding objects before destroying the hash table
5188 (and losing the object pointers). So some over-zealous constifications in
5189 LHASH have been relaxed so that lh_insert() does not take (nor store) the
5190 objects as "const" and the lh_doall[_arg] callback wrappers are not
5191 prototyped to have "const" restrictions on the object pointers they are
5192 given (and so aren't required to cast them away any more).
5195 *) The tmdiff.h API was so ugly and minimal that our own timing utility
5196 (speed) prefers to use its own implementation. The two implementations
5197 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
5198 its object type properly exposed (MS_TM) instead of casting to/from "char
5199 *". This may still change yet if someone realises MS_TM and "ms_time_***"
5200 aren't necessarily the greatest nomenclatures - but this is what was used
5201 internally to the implementation so I've used that for now.
5204 *) Ensure that deprecated functions do not get compiled when
5205 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
5206 the self-tests were still using deprecated key-generation functions so
5207 these have been updated also.
5210 *) Reorganise PKCS#7 code to separate the digest location functionality
5211 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest().
5212 New function PKCS7_set_digest() to set the digest type for PKCS#7
5213 digestedData type. Add additional code to correctly generate the
5214 digestedData type and add support for this type in PKCS7 initialization
5218 *) New function PKCS7_set0_type_other() this initializes a PKCS7
5219 structure of type "other".
5222 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
5223 sure the loop does correctly stop and breaking ("division by zero")
5224 modulus operations are not performed. The (pre-generated) prime
5225 table crypto/bn/bn_prime.h was already correct, but it could not be
5226 re-generated on some platforms because of the "division by zero"
5227 situation in the script.
5228 [Ralf S. Engelschall]
5230 *) Update support for ECC-based TLS ciphersuites according to
5231 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
5232 SHA-1 now is only used for "small" curves (where the
5233 representation of a field element takes up to 24 bytes); for
5234 larger curves, the field element resulting from ECDH is directly
5235 used as premaster secret.
5236 [Douglas Stebila (Sun Microsystems Laboratories)]
5238 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
5239 curve secp160r1 to the tests.
5240 [Douglas Stebila (Sun Microsystems Laboratories)]
5242 *) Add the possibility to load symbols globally with DSO.
5243 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
5245 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
5246 control of the error stack.
5249 *) Add support for STORE in ENGINE.
5252 *) Add the STORE type. The intention is to provide a common interface
5253 to certificate and key stores, be they simple file-based stores, or
5254 HSM-type store, or LDAP stores, or...
5255 NOTE: The code is currently UNTESTED and isn't really used anywhere.
5258 *) Add a generic structure called OPENSSL_ITEM. This can be used to
5259 pass a list of arguments to any function as well as provide a way
5260 for a function to pass data back to the caller.
5263 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
5264 works like BUF_strdup() but can be used to duplicate a portion of
5265 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
5269 *) Add the function sk_find_ex() which works like sk_find(), but will
5270 return an index to an element even if an exact match couldn't be
5271 found. The index is guaranteed to point at the element where the
5272 searched-for key would be inserted to preserve sorting order.
5275 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
5276 takes an extra flags argument for optional functionality. Currently,
5277 the following flags are defined:
5279 OBJ_BSEARCH_VALUE_ON_NOMATCH
5280 This one gets OBJ_bsearch_ex() to return a pointer to the first
5281 element where the comparing function returns a negative or zero
5284 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
5285 This one gets OBJ_bsearch_ex() to return a pointer to the first
5286 element where the comparing function returns zero. This is useful
5287 if there are more than one element where the comparing function
5291 *) Make it possible to create self-signed certificates with 'openssl ca'
5292 in such a way that the self-signed certificate becomes part of the
5293 CA database and uses the same mechanisms for serial number generation
5294 as all other certificate signing. The new flag '-selfsign' enables
5295 this functionality. Adapt CA.sh and CA.pl.in.
5298 *) Add functionality to check the public key of a certificate request
5299 against a given private. This is useful to check that a certificate
5300 request can be signed by that key (self-signing).
5303 *) Make it possible to have multiple active certificates with the same
5304 subject in the CA index file. This is done only if the keyword
5305 'unique_subject' is set to 'no' in the main CA section (default
5306 if 'CA_default') of the configuration file. The value is saved
5307 with the database itself in a separate index attribute file,
5308 named like the index file with '.attr' appended to the name.
5311 *) Generate muti valued AVAs using '+' notation in config files for
5315 *) Support for nameConstraints certificate extension.
5318 *) Support for policyConstraints certificate extension.
5321 *) Support for policyMappings certificate extension.
5324 *) Make sure the default DSA_METHOD implementation only uses its
5325 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
5326 and change its own handlers to be NULL so as to remove unnecessary
5327 indirection. This lets alternative implementations fallback to the
5328 default implementation more easily.
5331 *) Support for directoryName in GeneralName related extensions
5335 *) Make it possible to link applications using Makefile.shared.
5336 Make that possible even when linking against static libraries!
5339 *) Support for single pass processing for S/MIME signing. This now
5340 means that S/MIME signing can be done from a pipe, in addition
5341 cleartext signing (multipart/signed type) is effectively streaming
5342 and the signed data does not need to be all held in memory.
5344 This is done with a new flag PKCS7_STREAM. When this flag is set
5345 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
5346 is done after the data is output (and digests calculated) in
5347 SMIME_write_PKCS7().
5350 *) Add full support for -rpath/-R, both in shared libraries and
5351 applications, at least on the platforms where it's known how
5355 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
5356 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
5357 will now compute a table of multiples of the generator that
5358 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
5359 faster (notably in the case of a single point multiplication,
5360 scalar * generator).
5361 [Nils Larsch, Bodo Moeller]
5363 *) IPv6 support for certificate extensions. The various extensions
5364 which use the IP:a.b.c.d can now take IPv6 addresses using the
5365 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
5369 *) Added an ENGINE that implements RSA by performing private key
5370 exponentiations with the GMP library. The conversions to and from
5371 GMP's mpz_t format aren't optimised nor are any montgomery forms
5372 cached, and on x86 it appears OpenSSL's own performance has caught up.
5373 However there are likely to be other architectures where GMP could
5374 provide a boost. This ENGINE is not built in by default, but it can be
5375 specified at Configure time and should be accompanied by the necessary
5376 linker additions, eg;
5377 ./config -DOPENSSL_USE_GMP -lgmp
5380 *) "openssl engine" will not display ENGINE/DSO load failure errors when
5381 testing availability of engines with "-t" - the old behaviour is
5382 produced by increasing the feature's verbosity with "-tt".
5385 *) ECDSA routines: under certain error conditions uninitialized BN objects
5386 could be freed. Solution: make sure initialization is performed early
5387 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
5391 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
5392 and DH_METHOD (eg. by ENGINE implementations) to override the normal
5393 software implementations. For DSA and DH, parameter generation can
5394 also be overridden by providing the appropriate method callbacks.
5397 *) Change the "progress" mechanism used in key-generation and
5398 primality testing to functions that take a new BN_GENCB pointer in
5399 place of callback/argument pairs. The new API functions have "_ex"
5400 postfixes and the older functions are reimplemented as wrappers for
5401 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
5402 declarations of the old functions to help (graceful) attempts to
5403 migrate to the new functions. Also, the new key-generation API
5404 functions operate on a caller-supplied key-structure and return
5405 success/failure rather than returning a key or NULL - this is to
5406 help make "keygen" another member function of RSA_METHOD etc.
5408 Example for using the new callback interface:
5410 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
5414 BN_GENCB_set(&my_cb, my_callback, my_arg);
5416 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
5417 /* For the meaning of a, b in calls to my_callback(), see the
5418 * documentation of the function that calls the callback.
5419 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
5420 * my_callback should return 1 if it wants BN_is_prime_ex()
5421 * to continue, or 0 to stop.
5426 *) Change the ZLIB compression method to be stateful, and make it
5427 available to TLS with the number defined in
5428 draft-ietf-tls-compression-04.txt.
5431 *) Add the ASN.1 structures and functions for CertificatePair, which
5432 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
5434 CertificatePair ::= SEQUENCE {
5435 forward [0] Certificate OPTIONAL,
5436 reverse [1] Certificate OPTIONAL,
5437 -- at least one of the pair shall be present -- }
5439 Also implement the PEM functions to read and write certificate
5440 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
5442 This needed to be defined, mostly for the sake of the LDAP
5443 attribute crossCertificatePair, but may prove useful elsewhere as
5447 *) Make it possible to inhibit symlinking of shared libraries in
5448 Makefile.shared, for Cygwin's sake.
5451 *) Extend the BIGNUM API by creating a function
5452 void BN_set_negative(BIGNUM *a, int neg);
5453 and a macro that behave like
5454 int BN_is_negative(const BIGNUM *a);
5456 to avoid the need to access 'a->neg' directly in applications.
5459 *) Implement fast modular reduction for pseudo-Mersenne primes
5460 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
5461 EC_GROUP_new_curve_GFp() will now automatically use this
5463 [Nils Larsch <nla@trustcenter.de>]
5465 *) Add new lock type (CRYPTO_LOCK_BN).
5468 *) Change the ENGINE framework to automatically load engines
5469 dynamically from specific directories unless they could be
5470 found to already be built in or loaded. Move all the
5471 current engines except for the cryptodev one to a new
5473 The engines in engines/ are built as shared libraries if
5474 the "shared" options was given to ./Configure or ./config.
5475 Otherwise, they are inserted in libcrypto.a.
5476 /usr/local/ssl/engines is the default directory for dynamic
5477 engines, but that can be overridden at configure time through
5478 the usual use of --prefix and/or --openssldir, and at run
5479 time with the environment variable OPENSSL_ENGINES.
5480 [Geoff Thorpe and Richard Levitte]
5482 *) Add Makefile.shared, a helper makefile to build shared
5483 libraries. Adapt Makefile.org.
5486 *) Add version info to Win32 DLLs.
5487 [Peter 'Luna' Runestig" <peter@runestig.com>]
5489 *) Add new 'medium level' PKCS#12 API. Certificates and keys
5490 can be added using this API to created arbitrary PKCS#12
5491 files while avoiding the low level API.
5493 New options to PKCS12_create(), key or cert can be NULL and
5494 will then be omitted from the output file. The encryption
5495 algorithm NIDs can be set to -1 for no encryption, the mac
5496 iteration count can be set to 0 to omit the mac.
5498 Enhance pkcs12 utility by making the -nokeys and -nocerts
5499 options work when creating a PKCS#12 file. New option -nomac
5500 to omit the mac, NONE can be set for an encryption algorithm.
5501 New code is modified to use the enhanced PKCS12_create()
5502 instead of the low level API.
5505 *) Extend ASN1 encoder to support indefinite length constructed
5506 encoding. This can output sequences tags and octet strings in
5507 this form. Modify pk7_asn1.c to support indefinite length
5508 encoding. This is experimental and needs additional code to
5509 be useful, such as an ASN1 bio and some enhanced streaming
5512 Extend template encode functionality so that tagging is passed
5513 down to the template encoder.
5516 *) Let 'openssl req' fail if an argument to '-newkey' is not
5517 recognized instead of using RSA as a default.
5520 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
5521 As these are not official, they are not included in "ALL";
5522 the "ECCdraft" ciphersuite group alias can be used to select them.
5523 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
5525 *) Add ECDH engine support.
5526 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
5528 *) Add ECDH in new directory crypto/ecdh/.
5529 [Douglas Stebila (Sun Microsystems Laboratories)]
5531 *) Let BN_rand_range() abort with an error after 100 iterations
5532 without success (which indicates a broken PRNG).
5535 *) Change BN_mod_sqrt() so that it verifies that the input value
5536 is really the square of the return value. (Previously,
5537 BN_mod_sqrt would show GIGO behaviour.)
5540 *) Add named elliptic curves over binary fields from X9.62, SECG,
5541 and WAP/WTLS; add OIDs that were still missing.
5543 [Sheueling Chang Shantz and Douglas Stebila
5544 (Sun Microsystems Laboratories)]
5546 *) Extend the EC library for elliptic curves over binary fields
5547 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
5550 EC_GF2m_simple_method
5554 EC_GROUP_new_curve_GF2m
5555 EC_GROUP_set_curve_GF2m
5556 EC_GROUP_get_curve_GF2m
5557 EC_POINT_set_affine_coordinates_GF2m
5558 EC_POINT_get_affine_coordinates_GF2m
5559 EC_POINT_set_compressed_coordinates_GF2m
5561 Point compression for binary fields is disabled by default for
5562 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
5565 As binary polynomials are represented as BIGNUMs, various members
5566 of the EC_GROUP and EC_POINT data structures can be shared
5567 between the implementations for prime fields and binary fields;
5568 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
5569 are essentially identical to their ..._GFp counterparts.
5570 (For simplicity, the '..._GFp' prefix has been dropped from
5571 various internal method names.)
5573 An internal 'field_div' method (similar to 'field_mul' and
5574 'field_sqr') has been added; this is used only for binary fields.
5576 [Sheueling Chang Shantz and Douglas Stebila
5577 (Sun Microsystems Laboratories)]
5579 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
5580 through methods ('mul', 'precompute_mult').
5582 The generic implementations (now internally called 'ec_wNAF_mul'
5583 and 'ec_wNAF_precomputed_mult') remain the default if these
5584 methods are undefined.
5586 [Sheueling Chang Shantz and Douglas Stebila
5587 (Sun Microsystems Laboratories)]
5589 *) New function EC_GROUP_get_degree, which is defined through
5590 EC_METHOD. For curves over prime fields, this returns the bit
5591 length of the modulus.
5593 [Sheueling Chang Shantz and Douglas Stebila
5594 (Sun Microsystems Laboratories)]
5596 *) New functions EC_GROUP_dup, EC_POINT_dup.
5597 (These simply call ..._new and ..._copy).
5599 [Sheueling Chang Shantz and Douglas Stebila
5600 (Sun Microsystems Laboratories)]
5602 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
5603 Polynomials are represented as BIGNUMs (where the sign bit is not
5604 used) in the following functions [macros]:
5607 BN_GF2m_sub [= BN_GF2m_add]
5608 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
5609 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
5610 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
5612 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
5613 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
5614 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
5615 BN_GF2m_cmp [= BN_ucmp]
5617 (Note that only the 'mod' functions are actually for fields GF(2^m).
5618 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
5620 For some functions, an the irreducible polynomial defining a
5621 field can be given as an 'unsigned int[]' with strictly
5622 decreasing elements giving the indices of those bits that are set;
5623 i.e., p[] represents the polynomial
5624 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
5626 p[0] > p[1] > ... > p[k] = 0.
5627 This applies to the following functions:
5632 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
5633 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
5635 BN_GF2m_mod_sqrt_arr
5636 BN_GF2m_mod_solve_quad_arr
5640 Conversion can be performed by the following functions:
5645 bntest.c has additional tests for binary polynomial arithmetic.
5647 Two implementations for BN_GF2m_mod_div() are available.
5648 The default algorithm simply uses BN_GF2m_mod_inv() and
5649 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
5650 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
5651 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
5653 [Sheueling Chang Shantz and Douglas Stebila
5654 (Sun Microsystems Laboratories)]
5656 *) Add new error code 'ERR_R_DISABLED' that can be used when some
5657 functionality is disabled at compile-time.
5658 [Douglas Stebila <douglas.stebila@sun.com>]
5660 *) Change default behaviour of 'openssl asn1parse' so that more
5661 information is visible when viewing, e.g., a certificate:
5663 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
5664 mode the content of non-printable OCTET STRINGs is output in a
5665 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
5666 avoid the appearance of a printable string.
5667 [Nils Larsch <nla@trustcenter.de>]
5669 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
5671 EC_GROUP_set_asn1_flag()
5672 EC_GROUP_get_asn1_flag()
5673 EC_GROUP_set_point_conversion_form()
5674 EC_GROUP_get_point_conversion_form()
5675 These control ASN1 encoding details:
5676 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
5677 has been set to OPENSSL_EC_NAMED_CURVE.
5678 - Points are encoded in uncompressed form by default; options for
5679 asn1_for are as for point2oct, namely
5680 POINT_CONVERSION_COMPRESSED
5681 POINT_CONVERSION_UNCOMPRESSED
5682 POINT_CONVERSION_HYBRID
5684 Also add 'seed' and 'seed_len' members to EC_GROUP with access
5687 EC_GROUP_get0_seed()
5688 EC_GROUP_get_seed_len()
5689 This is used only for ASN1 purposes (so far).
5690 [Nils Larsch <nla@trustcenter.de>]
5692 *) Add 'field_type' member to EC_METHOD, which holds the NID
5693 of the appropriate field type OID. The new function
5694 EC_METHOD_get_field_type() returns this value.
5695 [Nils Larsch <nla@trustcenter.de>]
5700 EC_POINT_point2hex()
5701 EC_POINT_hex2point()
5702 providing useful interfaces to EC_POINT_point2oct() and
5703 EC_POINT_oct2point().
5704 [Nils Larsch <nla@trustcenter.de>]
5706 *) Change internals of the EC library so that the functions
5707 EC_GROUP_set_generator()
5708 EC_GROUP_get_generator()
5709 EC_GROUP_get_order()
5710 EC_GROUP_get_cofactor()
5711 are implemented directly in crypto/ec/ec_lib.c and not dispatched
5712 to methods, which would lead to unnecessary code duplication when
5713 adding different types of curves.
5714 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
5716 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
5717 arithmetic, and such that modified wNAFs are generated
5718 (which avoid length expansion in many cases).
5721 *) Add a function EC_GROUP_check_discriminant() (defined via
5722 EC_METHOD) that verifies that the curve discriminant is non-zero.
5724 Add a function EC_GROUP_check() that makes some sanity tests
5725 on a EC_GROUP, its generator and order. This includes
5726 EC_GROUP_check_discriminant().
5727 [Nils Larsch <nla@trustcenter.de>]
5729 *) Add ECDSA in new directory crypto/ecdsa/.
5731 Add applications 'openssl ecparam' and 'openssl ecdsa'
5732 (these are based on 'openssl dsaparam' and 'openssl dsa').
5734 ECDSA support is also included in various other files across the
5735 library. Most notably,
5736 - 'openssl req' now has a '-newkey ecdsa:file' option;
5737 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
5738 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
5739 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
5740 them suitable for ECDSA where domain parameters must be
5741 extracted before the specific public key;
5742 - ECDSA engine support has been added.
5743 [Nils Larsch <nla@trustcenter.de>]
5745 *) Include some named elliptic curves, and add OIDs from X9.62,
5746 SECG, and WAP/WTLS. Each curve can be obtained from the new
5748 EC_GROUP_new_by_curve_name(),
5749 and the list of available named curves can be obtained with
5750 EC_get_builtin_curves().
5751 Also add a 'curve_name' member to EC_GROUP objects, which can be
5753 EC_GROUP_set_curve_name()
5754 EC_GROUP_get_curve_name()
5755 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
5757 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
5758 was actually never needed) and in BN_mul(). The removal in BN_mul()
5759 required a small change in bn_mul_part_recursive() and the addition
5760 of the functions bn_cmp_part_words(), bn_sub_part_words() and
5761 bn_add_part_words(), which do the same thing as bn_cmp_words(),
5762 bn_sub_words() and bn_add_words() except they take arrays with
5766 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
5768 *) Cleanse PEM buffers before freeing them since they may contain
5770 [Benjamin Bennett <ben@psc.edu>]
5772 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
5773 a ciphersuite string such as "DEFAULT:RSA" cannot enable
5774 authentication-only ciphersuites.
5777 *) Since AES128 and AES256 share a single mask bit in the logic of
5778 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
5779 kludge to work properly if AES128 is available and AES256 isn't.
5782 *) Expand security boundary to match 1.1.1 module.
5785 *) Remove redundant features: hash file source, editing of test vectors
5786 modify fipsld to use external fips_premain.c signature.
5789 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
5790 run algorithm test programs.
5793 *) Make algorithm test programs more tolerant of whitespace.
5796 *) Have SSL/TLS server implementation tolerate "mismatched" record
5797 protocol version while receiving ClientHello even if the
5798 ClientHello is fragmented. (The server can't insist on the
5799 particular protocol version it has chosen before the ServerHello
5800 message has informed the client about his choice.)
5803 *) Load error codes if they are not already present instead of using a
5804 static variable. This allows them to be cleanly unloaded and reloaded.
5807 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
5809 *) Introduce limits to prevent malicious keys being able to
5810 cause a denial of service. (CVE-2006-2940)
5811 [Steve Henson, Bodo Moeller]
5813 *) Fix ASN.1 parsing of certain invalid structures that can result
5814 in a denial of service. (CVE-2006-2937) [Steve Henson]
5816 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
5817 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
5819 *) Fix SSL client code which could crash if connecting to a
5820 malicious SSLv2 server. (CVE-2006-4343)
5821 [Tavis Ormandy and Will Drewry, Google Security Team]
5823 *) Change ciphersuite string processing so that an explicit
5824 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
5825 will no longer include "AES128-SHA"), and any other similar
5826 ciphersuite (same bitmap) from *other* protocol versions (so that
5827 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
5828 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
5829 changes from 0.9.8b and 0.9.8d.
5832 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
5834 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
5835 (CVE-2006-4339) [Ben Laurie and Google Security Team]
5837 *) Change the Unix randomness entropy gathering to use poll() when
5838 possible instead of select(), since the latter has some
5839 undesirable limitations.
5840 [Darryl Miles via Richard Levitte and Bodo Moeller]
5842 *) Disable rogue ciphersuites:
5844 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
5845 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
5846 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
5848 The latter two were purportedly from
5849 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
5852 Also deactive the remaining ciphersuites from
5853 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
5854 unofficial, and the ID has long expired.
5857 *) Fix RSA blinding Heisenbug (problems sometimes occurred on
5858 dual-core machines) and other potential thread-safety issues.
5861 Changes between 0.9.7i and 0.9.7j [04 May 2006]
5863 *) Adapt fipsld and the build system to link against the validated FIPS
5864 module in FIPS mode.
5867 *) Fixes for VC++ 2005 build under Windows.
5870 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
5871 from a Windows bash shell such as MSYS. It is autodetected from the
5872 "config" script when run from a VC++ environment. Modify standard VC++
5873 build to use fipscanister.o from the GNU make build.
5876 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
5878 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
5879 The value now differs depending on if you build for FIPS or not.
5880 BEWARE! A program linked with a shared FIPSed libcrypto can't be
5881 safely run with a non-FIPSed libcrypto, as it may crash because of
5882 the difference induced by this change.
5885 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
5887 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
5888 (part of SSL_OP_ALL). This option used to disable the
5889 countermeasure against man-in-the-middle protocol-version
5890 rollback in the SSL 2.0 server implementation, which is a bad
5891 idea. (CVE-2005-2969)
5893 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
5894 for Information Security, National Institute of Advanced Industrial
5895 Science and Technology [AIST], Japan)]
5897 *) Minimal support for X9.31 signatures and PSS padding modes. This is
5898 mainly for FIPS compliance and not fully integrated at this stage.
5901 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
5902 the exponentiation using a fixed-length exponent. (Otherwise,
5903 the information leaked through timing could expose the secret key
5904 after many signatures; cf. Bleichenbacher's attack on DSA with
5908 *) Make a new fixed-window mod_exp implementation the default for
5909 RSA, DSA, and DH private-key operations so that the sequence of
5910 squares and multiplies and the memory access pattern are
5911 independent of the particular secret key. This will mitigate
5912 cache-timing and potential related attacks.
5914 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
5915 and this is automatically used by BN_mod_exp_mont() if the new flag
5916 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
5917 will use this BN flag for private exponents unless the flag
5918 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
5919 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
5921 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
5923 *) Change the client implementation for SSLv23_method() and
5924 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
5925 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
5926 (Previously, the SSL 2.0 backwards compatible Client Hello
5927 message format would be used even with SSL_OP_NO_SSLv2.)
5930 *) Add support for smime-type MIME parameter in S/MIME messages which some
5934 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
5935 a threadsafe manner. Modify rsa code to use new function and add calls
5936 to dsa and dh code (which had race conditions before).
5939 *) Include the fixed error library code in the C error file definitions
5940 instead of fixing them up at runtime. This keeps the error code
5941 structures constant.
5944 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
5946 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
5949 *) Fixes for newer kerberos headers. NB: the casts are needed because
5950 the 'length' field is signed on one version and unsigned on another
5951 with no (?) obvious way to tell the difference, without these VC++
5952 complains. Also the "definition" of FAR (blank) is no longer included
5953 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
5954 some needed definitions.
5957 *) Undo Cygwin change.
5960 *) Added support for proxy certificates according to RFC 3820.
5961 Because they may be a security thread to unaware applications,
5962 they must be explicitly allowed in run-time. See
5963 docs/HOWTO/proxy_certificates.txt for further information.
5966 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
5968 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
5969 server and client random values. Previously
5970 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
5971 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
5973 This change has negligible security impact because:
5975 1. Server and client random values still have 24 bytes of pseudo random
5978 2. Server and client random values are sent in the clear in the initial
5981 3. The master secret is derived using the premaster secret (48 bytes in
5982 size for static RSA ciphersuites) as well as client server and random
5985 The OpenSSL team would like to thank the UK NISCC for bringing this issue
5988 [Stephen Henson, reported by UK NISCC]
5990 *) Use Windows randomness collection on Cygwin.
5993 *) Fix hang in EGD/PRNGD query when communication socket is closed
5994 prematurely by EGD/PRNGD.
5995 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
5997 *) Prompt for pass phrases when appropriate for PKCS12 input format.
6000 *) Back-port of selected performance improvements from development
6001 branch, as well as improved support for PowerPC platforms.
6004 *) Add lots of checks for memory allocation failure, error codes to indicate
6005 failure and freeing up memory if a failure occurs.
6006 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
6008 *) Add new -passin argument to dgst.
6011 *) Perform some character comparisons of different types in X509_NAME_cmp:
6012 this is needed for some certificates that re-encode DNs into UTF8Strings
6013 (in violation of RFC3280) and can't or won't issue name rollover
6017 *) Make an explicit check during certificate validation to see that
6018 the CA setting in each certificate on the chain is correct. As a
6019 side effect always do the following basic checks on extensions,
6020 not just when there's an associated purpose to the check:
6022 - if there is an unhandled critical extension (unless the user
6023 has chosen to ignore this fault)
6024 - if the path length has been exceeded (if one is set at all)
6025 - that certain extensions fit the associated purpose (if one has
6029 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
6031 *) Avoid a race condition when CRLs are checked in a multi threaded
6032 environment. This would happen due to the reordering of the revoked
6033 entries during signature checking and serial number lookup. Now the
6034 encoding is cached and the serial number sort performed under a lock.
6035 Add new STACK function sk_is_sorted().
6038 *) Add Delta CRL to the extension code.
6041 *) Various fixes to s3_pkt.c so alerts are sent properly.
6042 [David Holmes <d.holmes@f5.com>]
6044 *) Reduce the chances of duplicate issuer name and serial numbers (in
6045 violation of RFC3280) using the OpenSSL certificate creation utilities.
6046 This is done by creating a random 64 bit value for the initial serial
6047 number when a serial number file is created or when a self signed
6048 certificate is created using 'openssl req -x509'. The initial serial
6049 number file is created using 'openssl x509 -next_serial' in CA.pl
6050 rather than being initialized to 1.
6053 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
6055 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
6056 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
6057 [Joe Orton, Steve Henson]
6059 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
6061 [Joe Orton, Steve Henson]
6063 *) Make it possible to have multiple active certificates with the same
6064 subject in the CA index file. This is done only if the keyword
6065 'unique_subject' is set to 'no' in the main CA section (default
6066 if 'CA_default') of the configuration file. The value is saved
6067 with the database itself in a separate index attribute file,
6068 named like the index file with '.attr' appended to the name.
6071 *) X509 verify fixes. Disable broken certificate workarounds when
6072 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
6073 keyUsage extension present. Don't accept CRLs with unhandled critical
6074 extensions: since verify currently doesn't process CRL extensions this
6075 rejects a CRL with *any* critical extensions. Add new verify error codes
6079 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
6080 A clarification of RFC2560 will require the use of OCTET STRINGs and
6081 some implementations cannot handle the current raw format. Since OpenSSL
6082 copies and compares OCSP nonces as opaque blobs without any attempt at
6083 parsing them this should not create any compatibility issues.
6086 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
6087 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
6088 this HMAC (and other) operations are several times slower than OpenSSL
6092 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
6093 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6095 *) Use the correct content when signing type "other".
6098 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
6100 *) Fix various bugs revealed by running the NISCC test suite:
6102 Stop out of bounds reads in the ASN1 code when presented with
6103 invalid tags (CVE-2003-0543 and CVE-2003-0544).
6105 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
6107 If verify callback ignores invalid public key errors don't try to check
6108 certificate signature with the NULL public key.
6112 *) New -ignore_err option in ocsp application to stop the server
6113 exiting on the first error in a request.
6116 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
6117 if the server requested one: as stated in TLS 1.0 and SSL 3.0
6121 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
6122 extra data after the compression methods not only for TLS 1.0
6123 but also for SSL 3.0 (as required by the specification).
6124 [Bodo Moeller; problem pointed out by Matthias Loepfe]
6126 *) Change X509_certificate_type() to mark the key as exported/exportable
6127 when it's 512 *bits* long, not 512 bytes.
6130 *) Change AES_cbc_encrypt() so it outputs exact multiple of
6131 blocks during encryption.
6134 *) Various fixes to base64 BIO and non blocking I/O. On write
6135 flushes were not handled properly if the BIO retried. On read
6136 data was not being buffered properly and had various logic bugs.
6137 This also affects blocking I/O when the data being decoded is a
6141 *) Various S/MIME bugfixes and compatibility changes:
6142 output correct application/pkcs7 MIME type if
6143 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
6144 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
6145 of files as .eml work). Correctly handle very long lines in MIME
6149 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
6151 *) Countermeasure against the Klima-Pokorny-Rosa extension of
6152 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
6153 a protocol version number mismatch like a decryption error
6154 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
6157 *) Turn on RSA blinding by default in the default implementation
6158 to avoid a timing attack. Applications that don't want it can call
6159 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
6160 They would be ill-advised to do so in most cases.
6161 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
6163 *) Change RSA blinding code so that it works when the PRNG is not
6164 seeded (in this case, the secret RSA exponent is abused as
6165 an unpredictable seed -- if it is not unpredictable, there
6166 is no point in blinding anyway). Make RSA blinding thread-safe
6167 by remembering the creator's thread ID in rsa->blinding and
6168 having all other threads use local one-time blinding factors
6169 (this requires more computation than sharing rsa->blinding, but
6170 avoids excessive locking; and if an RSA object is not shared
6171 between threads, blinding will still be very fast).
6174 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
6175 ENGINE as defaults for all supported algorithms irrespective of
6176 the 'flags' parameter. 'flags' is now honoured, so applications
6177 should make sure they are passing it correctly.
6180 *) Target "mingw" now allows native Windows code to be generated in
6181 the Cygwin environment as well as with the MinGW compiler.
6184 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
6186 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
6187 via timing by performing a MAC computation even if incorrect
6188 block cipher padding has been found. This is a countermeasure
6189 against active attacks where the attacker has to distinguish
6190 between bad padding and a MAC verification error. (CVE-2003-0078)
6192 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
6193 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
6194 Martin Vuagnoux (EPFL, Ilion)]
6196 *) Make the no-err option work as intended. The intention with no-err
6197 is not to have the whole error stack handling routines removed from
6198 libcrypto, it's only intended to remove all the function name and
6199 reason texts, thereby removing some of the footprint that may not
6200 be interesting if those errors aren't displayed anyway.
6202 NOTE: it's still possible for any application or module to have it's
6203 own set of error texts inserted. The routines are there, just not
6204 used by default when no-err is given.
6207 *) Add support for FreeBSD on IA64.
6208 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
6210 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
6211 Kerberos function mit_des_cbc_cksum(). Before this change,
6212 the value returned by DES_cbc_cksum() was like the one from
6213 mit_des_cbc_cksum(), except the bytes were swapped.
6214 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
6216 *) Allow an application to disable the automatic SSL chain building.
6217 Before this a rather primitive chain build was always performed in
6218 ssl3_output_cert_chain(): an application had no way to send the
6219 correct chain if the automatic operation produced an incorrect result.
6221 Now the chain builder is disabled if either:
6223 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
6225 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
6227 The reasoning behind this is that an application would not want the
6228 auto chain building to take place if extra chain certificates are
6229 present and it might also want a means of sending no additional
6230 certificates (for example the chain has two certificates and the
6234 *) Add the possibility to build without the ENGINE framework.
6235 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6237 *) Under Win32 gmtime() can return NULL: check return value in
6238 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
6241 *) DSA routines: under certain error conditions uninitialized BN objects
6242 could be freed. Solution: make sure initialization is performed early
6243 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
6244 Nils Larsch <nla@trustcenter.de> via PR#459)
6247 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
6248 checked on reconnect on the client side, therefore session resumption
6249 could still fail with a "ssl session id is different" error. This
6250 behaviour is masked when SSL_OP_ALL is used due to
6251 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
6252 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6253 followup to PR #377.
6256 *) IA-32 assembler support enhancements: unified ELF targets, support
6257 for SCO/Caldera platforms, fix for Cygwin shared build.
6260 *) Add support for FreeBSD on sparc64. As a consequence, support for
6261 FreeBSD on non-x86 processors is separate from x86 processors on
6262 the config script, much like the NetBSD support.
6263 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
6265 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
6267 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
6270 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
6271 code (06) was taken as the first octet of the session ID and the last
6272 octet was ignored consequently. As a result SSLv2 client side session
6273 caching could not have worked due to the session ID mismatch between
6275 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
6279 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
6280 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
6284 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
6285 seems that in spite of existing for more than a year, many application
6286 author have done nothing to provide the necessary callbacks, which
6287 means that this particular engine will not work properly anywhere.
6288 This is a very unfortunate situation which forces us, in the name
6289 of usability, to give the hw_ncipher.c a static lock, which is part
6291 NOTE: This is for the 0.9.7 series ONLY. This hack will never
6292 appear in 0.9.8 or later. We EXPECT application authors to have
6293 dealt properly with this when 0.9.8 is released (unless we actually
6294 make such changes in the libcrypto locking code that changes will
6295 have to be made anyway).
6298 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
6299 octets have been read, EOF or an error occurs. Without this change
6300 some truncated ASN1 structures will not produce an error.
6303 *) Disable Heimdal support, since it hasn't been fully implemented.
6304 Still give the possibility to force the use of Heimdal, but with
6305 warnings and a request that patches get sent to openssl-dev.
6308 *) Add the VC-CE target, introduce the WINCE sysname, and add
6309 INSTALL.WCE and appropriate conditionals to make it build.
6310 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
6312 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
6313 cygssl-x.y.z.dll, where x, y and z are the major, minor and
6314 edit numbers of the version.
6315 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
6317 *) Introduce safe string copy and catenation functions
6318 (BUF_strlcpy() and BUF_strlcat()).
6319 [Ben Laurie (CHATS) and Richard Levitte]
6321 *) Avoid using fixed-size buffers for one-line DNs.
6322 [Ben Laurie (CHATS)]
6324 *) Add BUF_MEM_grow_clean() to avoid information leakage when
6325 resizing buffers containing secrets, and use where appropriate.
6326 [Ben Laurie (CHATS)]
6328 *) Avoid using fixed size buffers for configuration file location.
6329 [Ben Laurie (CHATS)]
6331 *) Avoid filename truncation for various CA files.
6332 [Ben Laurie (CHATS)]
6334 *) Use sizeof in preference to magic numbers.
6335 [Ben Laurie (CHATS)]
6337 *) Avoid filename truncation in cert requests.
6338 [Ben Laurie (CHATS)]
6340 *) Add assertions to check for (supposedly impossible) buffer
6342 [Ben Laurie (CHATS)]
6344 *) Don't cache truncated DNS entries in the local cache (this could
6345 potentially lead to a spoofing attack).
6346 [Ben Laurie (CHATS)]
6348 *) Fix various buffers to be large enough for hex/decimal
6349 representations in a platform independent manner.
6350 [Ben Laurie (CHATS)]
6352 *) Add CRYPTO_realloc_clean() to avoid information leakage when
6353 resizing buffers containing secrets, and use where appropriate.
6354 [Ben Laurie (CHATS)]
6356 *) Add BIO_indent() to avoid much slightly worrying code to do
6358 [Ben Laurie (CHATS)]
6360 *) Convert sprintf()/BIO_puts() to BIO_printf().
6361 [Ben Laurie (CHATS)]
6363 *) buffer_gets() could terminate with the buffer only half
6365 [Ben Laurie (CHATS)]
6367 *) Add assertions to prevent user-supplied crypto functions from
6368 overflowing internal buffers by having large block sizes, etc.
6369 [Ben Laurie (CHATS)]
6371 *) New OPENSSL_assert() macro (similar to assert(), but enabled
6373 [Ben Laurie (CHATS)]
6375 *) Eliminate unused copy of key in RC4.
6376 [Ben Laurie (CHATS)]
6378 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
6379 [Ben Laurie (CHATS)]
6381 *) Fix off-by-one error in EGD path.
6382 [Ben Laurie (CHATS)]
6384 *) If RANDFILE path is too long, ignore instead of truncating.
6385 [Ben Laurie (CHATS)]
6387 *) Eliminate unused and incorrectly sized X.509 structure
6389 [Ben Laurie (CHATS)]
6391 *) Eliminate unused and dangerous function knumber().
6392 [Ben Laurie (CHATS)]
6394 *) Eliminate unused and dangerous structure, KSSL_ERR.
6395 [Ben Laurie (CHATS)]
6397 *) Protect against overlong session ID context length in an encoded
6398 session object. Since these are local, this does not appear to be
6400 [Ben Laurie (CHATS)]
6402 *) Change from security patch (see 0.9.6e below) that did not affect
6403 the 0.9.6 release series:
6405 Remote buffer overflow in SSL3 protocol - an attacker could
6406 supply an oversized master key in Kerberos-enabled versions.
6408 [Ben Laurie (CHATS)]
6410 *) Change the SSL kerb5 codes to match RFC 2712.
6413 *) Make -nameopt work fully for req and add -reqopt switch.
6414 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
6416 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
6417 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
6419 *) Make sure tests can be performed even if the corresponding algorithms
6420 have been removed entirely. This was also the last step to make
6421 OpenSSL compilable with DJGPP under all reasonable conditions.
6422 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
6424 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
6425 to allow version independent disabling of normally unselected ciphers,
6426 which may be activated as a side-effect of selecting a single cipher.
6428 (E.g., cipher list string "RSA" enables ciphersuites that are left
6429 out of "ALL" because they do not provide symmetric encryption.
6430 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
6431 [Lutz Jaenicke, Bodo Moeller]
6433 *) Add appropriate support for separate platform-dependent build
6434 directories. The recommended way to make a platform-dependent
6435 build directory is the following (tested on Linux), maybe with
6438 # Place yourself outside of the OpenSSL source tree. In
6439 # this example, the environment variable OPENSSL_SOURCE
6440 # is assumed to contain the absolute OpenSSL source directory.
6441 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
6442 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
6443 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
6444 mkdir -p `dirname $F`
6445 ln -s $OPENSSL_SOURCE/$F $F
6448 To be absolutely sure not to disturb the source tree, a "make clean"
6449 is a good thing. If it isn't successful, don't worry about it,
6450 it probably means the source directory is very clean.
6453 *) Make sure any ENGINE control commands make local copies of string
6454 pointers passed to them whenever necessary. Otherwise it is possible
6455 the caller may have overwritten (or deallocated) the original string
6456 data when a later ENGINE operation tries to use the stored values.
6457 [Götz Babin-Ebell <babinebell@trustcenter.de>]
6459 *) Improve diagnostics in file reading and command-line digests.
6460 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
6462 *) Add AES modes CFB and OFB to the object database. Correct an
6463 error in AES-CFB decryption.
6466 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
6467 allows existing EVP_CIPHER_CTX structures to be reused after
6468 calling EVP_*Final(). This behaviour is used by encryption
6469 BIOs and some applications. This has the side effect that
6470 applications must explicitly clean up cipher contexts with
6471 EVP_CIPHER_CTX_cleanup() or they will leak memory.
6474 *) Check the values of dna and dnb in bn_mul_recursive before calling
6475 bn_mul_comba (a non zero value means the a or b arrays do not contain
6476 n2 elements) and fallback to bn_mul_normal if either is not zero.
6479 *) Fix escaping of non-ASCII characters when using the -subj option
6480 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
6483 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
6484 form for "surname", serialNumber has no short form.
6485 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
6486 therefore remove "mail" short name for "internet 7".
6487 The OID for unique identifiers in X509 certificates is
6488 x500UniqueIdentifier, not uniqueIdentifier.
6489 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
6492 *) Add an "init" command to the ENGINE config module and auto initialize
6493 ENGINEs. Without any "init" command the ENGINE will be initialized
6494 after all ctrl commands have been executed on it. If init=1 the
6495 ENGINE is initailized at that point (ctrls before that point are run
6496 on the uninitialized ENGINE and after on the initialized one). If
6497 init=0 then the ENGINE will not be iniatialized at all.
6500 *) Fix the 'app_verify_callback' interface so that the user-defined
6501 argument is actually passed to the callback: In the
6502 SSL_CTX_set_cert_verify_callback() prototype, the callback
6503 declaration has been changed from
6506 int (*cb)(X509_STORE_CTX *,void *);
6507 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
6508 i=s->ctx->app_verify_callback(&ctx)
6509 has been changed into
6510 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
6512 To update applications using SSL_CTX_set_cert_verify_callback(),
6513 a dummy argument can be added to their callback functions.
6514 [D. K. Smetters <smetters@parc.xerox.com>]
6516 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
6517 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
6519 *) Add and OPENSSL_LOAD_CONF define which will cause
6520 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
6521 This allows older applications to transparently support certain
6522 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
6523 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
6524 load the config file and OPENSSL_add_all_algorithms_conf() which will
6525 always load it have also been added.
6528 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
6529 Adjust NIDs and EVP layer.
6530 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6532 *) Config modules support in openssl utility.
6534 Most commands now load modules from the config file,
6535 though in a few (such as version) this isn't done
6536 because it couldn't be used for anything.
6538 In the case of ca and req the config file used is
6539 the same as the utility itself: that is the -config
6540 command line option can be used to specify an
6544 *) Move default behaviour from OPENSSL_config(). If appname is NULL
6545 use "openssl_conf" if filename is NULL use default openssl config file.
6548 *) Add an argument to OPENSSL_config() to allow the use of an alternative
6549 config section name. Add a new flag to tolerate a missing config file
6550 and move code to CONF_modules_load_file().
6553 *) Support for crypto accelerator cards from Accelerated Encryption
6554 Processing, www.aep.ie. (Use engine 'aep')
6555 The support was copied from 0.9.6c [engine] and adapted/corrected
6556 to work with the new engine framework.
6557 [AEP Inc. and Richard Levitte]
6559 *) Support for SureWare crypto accelerator cards from Baltimore
6560 Technologies. (Use engine 'sureware')
6561 The support was copied from 0.9.6c [engine] and adapted
6562 to work with the new engine framework.
6565 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
6566 make the newer ENGINE framework commands for the CHIL engine work.
6567 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
6569 *) Make it possible to produce shared libraries on ReliantUNIX.
6570 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
6572 *) Add the configuration target debug-linux-ppro.
6573 Make 'openssl rsa' use the general key loading routines
6574 implemented in apps.c, and make those routines able to
6575 handle the key format FORMAT_NETSCAPE and the variant
6577 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6579 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
6580 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
6582 *) Add -keyform to rsautl, and document -engine.
6583 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
6585 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
6586 BIO_R_NO_SUCH_FILE error code rather than the generic
6587 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
6590 *) Add new functions
6592 ERR_peek_last_error_line
6593 ERR_peek_last_error_line_data.
6594 These are similar to
6597 ERR_peek_error_line_data,
6598 but report on the latest error recorded rather than the first one
6599 still in the error queue.
6600 [Ben Laurie, Bodo Moeller]
6602 *) default_algorithms option in ENGINE config module. This allows things
6604 default_algorithms = ALL
6605 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
6608 *) Preliminary ENGINE config module.
6611 *) New experimental application configuration code.
6614 *) Change the AES code to follow the same name structure as all other
6615 symmetric ciphers, and behave the same way. Move everything to
6616 the directory crypto/aes, thereby obsoleting crypto/rijndael.
6617 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
6619 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
6620 [Ben Laurie and Theo de Raadt]
6622 *) Add option to output public keys in req command.
6623 [Massimiliano Pala madwolf@openca.org]
6625 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
6626 (up to about 10% better than before for P-192 and P-224).
6629 *) New functions/macros
6631 SSL_CTX_set_msg_callback(ctx, cb)
6632 SSL_CTX_set_msg_callback_arg(ctx, arg)
6633 SSL_set_msg_callback(ssl, cb)
6634 SSL_set_msg_callback_arg(ssl, arg)
6636 to request calling a callback function
6638 void cb(int write_p, int version, int content_type,
6639 const void *buf, size_t len, SSL *ssl, void *arg)
6641 whenever a protocol message has been completely received
6642 (write_p == 0) or sent (write_p == 1). Here 'version' is the
6643 protocol version according to which the SSL library interprets
6644 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
6645 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
6646 the content type as defined in the SSL 3.0/TLS 1.0 protocol
6647 specification (change_cipher_spec(20), alert(21), handshake(22)).
6648 'buf' and 'len' point to the actual message, 'ssl' to the
6649 SSL object, and 'arg' is the application-defined value set by
6650 SSL[_CTX]_set_msg_callback_arg().
6652 'openssl s_client' and 'openssl s_server' have new '-msg' options
6653 to enable a callback that displays all protocol messages.
6656 *) Change the shared library support so shared libraries are built as
6657 soon as the corresponding static library is finished, and thereby get
6658 openssl and the test programs linked against the shared library.
6659 This still only happens when the keyword "shard" has been given to
6660 the configuration scripts.
6662 NOTE: shared library support is still an experimental thing, and
6663 backward binary compatibility is still not guaranteed.
6664 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
6666 *) Add support for Subject Information Access extension.
6667 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
6669 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
6670 additional bytes when new memory had to be allocated, not just
6671 when reusing an existing buffer.
6674 *) New command line and configuration option 'utf8' for the req command.
6675 This allows field values to be specified as UTF8 strings.
6678 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
6679 runs for the former and machine-readable output for the latter.
6682 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
6683 of the e-mail address in the DN (i.e., it will go into a certificate
6684 extension only). The new configuration file option 'email_in_dn = no'
6685 has the same effect.
6686 [Massimiliano Pala madwolf@openca.org]
6688 *) Change all functions with names starting with des_ to be starting
6689 with DES_ instead. Add wrappers that are compatible with libdes,
6690 but are named _ossl_old_des_*. Finally, add macros that map the
6691 des_* symbols to the corresponding _ossl_old_des_* if libdes
6692 compatibility is desired. If OpenSSL 0.9.6c compatibility is
6693 desired, the des_* symbols will be mapped to DES_*, with one
6696 Since we provide two compatibility mappings, the user needs to
6697 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
6698 compatibility is desired. The default (i.e., when that macro
6699 isn't defined) is OpenSSL 0.9.6c compatibility.
6701 There are also macros that enable and disable the support of old
6702 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
6703 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
6704 are defined, the default will apply: to support the old des routines.
6706 In either case, one must include openssl/des.h to get the correct
6707 definitions. Do not try to just include openssl/des_old.h, that
6710 NOTE: This is a major break of an old API into a new one. Software
6711 authors are encouraged to switch to the DES_ style functions. Some
6712 time in the future, des_old.h and the libdes compatibility functions
6713 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
6714 default), and then completely removed.
6717 *) Test for certificates which contain unsupported critical extensions.
6718 If such a certificate is found during a verify operation it is
6719 rejected by default: this behaviour can be overridden by either
6720 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
6721 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
6722 X509_supported_extension() has also been added which returns 1 if a
6723 particular extension is supported.
6726 *) Modify the behaviour of EVP cipher functions in similar way to digests
6727 to retain compatibility with existing code.
6730 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
6731 compatibility with existing code. In particular the 'ctx' parameter does
6732 not have to be to be initialized before the call to EVP_DigestInit() and
6733 it is tidied up after a call to EVP_DigestFinal(). New function
6734 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
6735 EVP_MD_CTX_copy() changed to not require the destination to be
6736 initialized valid and new function EVP_MD_CTX_copy_ex() added which
6737 requires the destination to be valid.
6739 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
6740 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
6743 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
6744 so that complete 'Handshake' protocol structures are kept in memory
6745 instead of overwriting 'msg_type' and 'length' with 'body' data.
6748 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
6749 [Massimo Santin via Richard Levitte]
6751 *) Major restructuring to the underlying ENGINE code. This includes
6752 reduction of linker bloat, separation of pure "ENGINE" manipulation
6753 (initialisation, etc) from functionality dealing with implementations
6754 of specific crypto iterfaces. This change also introduces integrated
6755 support for symmetric ciphers and digest implementations - so ENGINEs
6756 can now accelerate these by providing EVP_CIPHER and EVP_MD
6757 implementations of their own. This is detailed in crypto/engine/README
6758 as it couldn't be adequately described here. However, there are a few
6759 API changes worth noting - some RSA, DSA, DH, and RAND functions that
6760 were changed in the original introduction of ENGINE code have now
6761 reverted back - the hooking from this code to ENGINE is now a good
6762 deal more passive and at run-time, operations deal directly with
6763 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
6764 dereferencing through an ENGINE pointer any more. Also, the ENGINE
6765 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
6766 they were not being used by the framework as there is no concept of a
6767 BIGNUM_METHOD and they could not be generalised to the new
6768 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
6769 ENGINE_cpy() has been removed as it cannot be consistently defined in
6773 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
6776 *) Change mkdef.pl to sort symbols that get the same entry number,
6777 and make sure the automatically generated functions ERR_load_*
6778 become part of libeay.num as well.
6781 *) New function SSL_renegotiate_pending(). This returns true once
6782 renegotiation has been requested (either SSL_renegotiate() call
6783 or HelloRequest/ClientHello received from the peer) and becomes
6784 false once a handshake has been completed.
6785 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
6786 sends a HelloRequest, but does not ensure that a handshake takes
6787 place. SSL_renegotiate_pending() is useful for checking if the
6788 client has followed the request.)
6791 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
6792 By default, clients may request session resumption even during
6793 renegotiation (if session ID contexts permit); with this option,
6794 session resumption is possible only in the first handshake.
6796 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
6797 more bits available for options that should not be part of
6798 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
6801 *) Add some demos for certificate and certificate request creation.
6804 *) Make maximum certificate chain size accepted from the peer application
6805 settable (SSL*_get/set_max_cert_list()), as proposed by
6806 "Douglas E. Engert" <deengert@anl.gov>.
6809 *) Add support for shared libraries for Unixware-7
6810 (Boyd Lynn Gerber <gerberb@zenez.com>).
6813 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
6814 be done prior to destruction. Use this to unload error strings from
6815 ENGINEs that load their own error strings. NB: This adds two new API
6816 functions to "get" and "set" this destroy handler in an ENGINE.
6819 *) Alter all existing ENGINE implementations (except "openssl" and
6820 "openbsd") to dynamically instantiate their own error strings. This
6821 makes them more flexible to be built both as statically-linked ENGINEs
6822 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
6823 Also, add stub code to each that makes building them as self-contained
6824 shared-libraries easier (see README.ENGINE).
6827 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
6828 implementations into applications that are completely implemented in
6829 self-contained shared-libraries. The "dynamic" ENGINE exposes control
6830 commands that can be used to configure what shared-library to load and
6831 to control aspects of the way it is handled. Also, made an update to
6832 the README.ENGINE file that brings its information up-to-date and
6833 provides some information and instructions on the "dynamic" ENGINE
6834 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
6837 *) Make it possible to unload ranges of ERR strings with a new
6838 "ERR_unload_strings" function.
6841 *) Add a copy() function to EVP_MD.
6844 *) Make EVP_MD routines take a context pointer instead of just the
6845 md_data void pointer.
6848 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
6849 that the digest can only process a single chunk of data
6850 (typically because it is provided by a piece of
6851 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
6852 is only going to provide a single chunk of data, and hence the
6853 framework needn't accumulate the data for oneshot drivers.
6856 *) As with "ERR", make it possible to replace the underlying "ex_data"
6857 functions. This change also alters the storage and management of global
6858 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
6859 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
6860 index counters. The API functions that use this state have been changed
6861 to take a "class_index" rather than pointers to the class's local STACK
6862 and counter, and there is now an API function to dynamically create new
6863 classes. This centralisation allows us to (a) plug a lot of the
6864 thread-safety problems that existed, and (b) makes it possible to clean
6865 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
6866 such data would previously have always leaked in application code and
6867 workarounds were in place to make the memory debugging turn a blind eye
6868 to it. Application code that doesn't use this new function will still
6869 leak as before, but their memory debugging output will announce it now
6870 rather than letting it slide.
6872 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
6873 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
6874 has a return value to indicate success or failure.
6877 *) Make it possible to replace the underlying "ERR" functions such that the
6878 global state (2 LHASH tables and 2 locks) is only used by the "default"
6879 implementation. This change also adds two functions to "get" and "set"
6880 the implementation prior to it being automatically set the first time
6881 any other ERR function takes place. Ie. an application can call "get",
6882 pass the return value to a module it has just loaded, and that module
6883 can call its own "set" function using that value. This means the
6884 module's "ERR" operations will use (and modify) the error state in the
6885 application and not in its own statically linked copy of OpenSSL code.
6888 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
6889 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
6890 the operation, and provides a more encapsulated way for external code
6891 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
6892 to use these functions rather than manually incrementing the counts.
6894 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
6897 *) Add EVP test program.
6900 *) Add symmetric cipher support to ENGINE. Expect the API to change!
6903 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
6904 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
6905 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
6906 These allow a CRL to be built without having to access X509_CRL fields
6907 directly. Modify 'ca' application to use new functions.
6910 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
6911 bug workarounds. Rollback attack detection is a security feature.
6912 The problem will only arise on OpenSSL servers when TLSv1 is not
6913 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
6914 Software authors not wanting to support TLSv1 will have special reasons
6915 for their choice and can explicitly enable this option.
6916 [Bodo Moeller, Lutz Jaenicke]
6918 *) Rationalise EVP so it can be extended: don't include a union of
6919 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
6920 (similar to those existing for EVP_CIPHER_CTX).
6925 EVP_MD_CTX_init(&md); /* new function call */
6926 EVP_DigestInit(&md, EVP_sha1());
6927 EVP_DigestUpdate(&md, in, len);
6928 EVP_DigestFinal(&md, out, NULL);
6929 EVP_MD_CTX_cleanup(&md); /* new function call */
6933 *) Make DES key schedule conform to the usual scheme, as well as
6934 correcting its structure. This means that calls to DES functions
6935 now have to pass a pointer to a des_key_schedule instead of a
6936 plain des_key_schedule (which was actually always a pointer
6939 des_key_schedule ks;
6941 des_set_key_checked(..., &ks);
6942 des_ncbc_encrypt(..., &ks, ...);
6944 (Note that a later change renames 'des_...' into 'DES_...'.)
6947 *) Initial reduction of linker bloat: the use of some functions, such as
6948 PEM causes large amounts of unused functions to be linked in due to
6949 poor organisation. For example pem_all.c contains every PEM function
6950 which has a knock on effect of linking in large amounts of (unused)
6951 ASN1 code. Grouping together similar functions and splitting unrelated
6952 functions prevents this.
6955 *) Cleanup of EVP macros.
6958 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
6959 correct _ecb suffix.
6962 *) Add initial OCSP responder support to ocsp application. The
6963 revocation information is handled using the text based index
6964 use by the ca application. The responder can either handle
6965 requests generated internally, supplied in files (for example
6966 via a CGI script) or using an internal minimal server.
6969 *) Add configuration choices to get zlib compression for TLS.
6972 *) Changes to Kerberos SSL for RFC 2712 compliance:
6973 1. Implemented real KerberosWrapper, instead of just using
6974 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
6975 2. Implemented optional authenticator field of KerberosWrapper.
6977 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
6978 and authenticator structs; see crypto/krb5/.
6980 Generalized Kerberos calls to support multiple Kerberos libraries.
6981 [Vern Staats <staatsvr@asc.hpc.mil>,
6982 Jeffrey Altman <jaltman@columbia.edu>
6983 via Richard Levitte]
6985 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
6986 already does with RSA. testdsa.h now has 'priv_key/pub_key'
6987 values for each of the key sizes rather than having just
6988 parameters (and 'speed' generating keys each time).
6991 *) Speed up EVP routines.
6994 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
6995 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
6996 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
6997 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
6999 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
7000 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
7001 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
7004 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
7006 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
7009 *) Added the OS2-EMX target.
7010 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
7012 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
7013 to support NCONF routines in extension code. New function CONF_set_nconf()
7014 to allow functions which take an NCONF to also handle the old LHASH
7015 structure: this means that the old CONF compatible routines can be
7016 retained (in particular wrt extensions) without having to duplicate the
7017 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
7020 *) Enhance the general user interface with mechanisms for inner control
7021 and with possibilities to have yes/no kind of prompts.
7024 *) Change all calls to low level digest routines in the library and
7025 applications to use EVP. Add missing calls to HMAC_cleanup() and
7026 don't assume HMAC_CTX can be copied using memcpy().
7027 [Verdon Walker <VWalker@novell.com>, Steve Henson]
7029 *) Add the possibility to control engines through control names but with
7030 arbitrary arguments instead of just a string.
7031 Change the key loaders to take a UI_METHOD instead of a callback
7032 function pointer. NOTE: this breaks binary compatibility with earlier
7033 versions of OpenSSL [engine].
7034 Adapt the nCipher code for these new conditions and add a card insertion
7038 *) Enhance the general user interface with mechanisms to better support
7039 dialog box interfaces, application-defined prompts, the possibility
7040 to use defaults (for example default passwords from somewhere else)
7041 and interrupts/cancellations.
7044 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
7045 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
7048 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
7049 tidy up some unnecessarily weird code in 'sk_new()').
7050 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
7052 *) Change the key loading routines for ENGINEs to use the same kind
7053 callback (pem_password_cb) as all other routines that need this
7057 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
7058 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
7059 than this minimum value is recommended.
7062 *) New random seeder for OpenVMS, using the system process statistics
7063 that are easily reachable.
7066 *) Windows apparently can't transparently handle global
7067 variables defined in DLLs. Initialisations such as:
7069 const ASN1_ITEM *it = &ASN1_INTEGER_it;
7071 won't compile. This is used by the any applications that need to
7072 declare their own ASN1 modules. This was fixed by adding the option
7073 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
7074 needed for static libraries under Win32.
7077 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
7078 setting of purpose and trust fields. New X509_STORE trust and
7079 purpose functions and tidy up setting in other SSL functions.
7082 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
7083 structure. These are inherited by X509_STORE_CTX when it is
7084 initialised. This allows various defaults to be set in the
7085 X509_STORE structure (such as flags for CRL checking and custom
7086 purpose or trust settings) for functions which only use X509_STORE_CTX
7087 internally such as S/MIME.
7089 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
7090 trust settings if they are not set in X509_STORE. This allows X509_STORE
7091 purposes and trust (in S/MIME for example) to override any set by default.
7093 Add command line options for CRL checking to smime, s_client and s_server
7097 *) Initial CRL based revocation checking. If the CRL checking flag(s)
7098 are set then the CRL is looked up in the X509_STORE structure and
7099 its validity and signature checked, then if the certificate is found
7100 in the CRL the verify fails with a revoked error.
7102 Various new CRL related callbacks added to X509_STORE_CTX structure.
7104 Command line options added to 'verify' application to support this.
7106 This needs some additional work, such as being able to handle multiple
7107 CRLs with different times, extension based lookup (rather than just
7108 by subject name) and ultimately more complete V2 CRL extension
7112 *) Add a general user interface API (crypto/ui/). This is designed
7113 to replace things like des_read_password and friends (backward
7114 compatibility functions using this new API are provided).
7115 The purpose is to remove prompting functions from the DES code
7116 section as well as provide for prompting through dialog boxes in
7117 a window system and the like.
7120 *) Add "ex_data" support to ENGINE so implementations can add state at a
7121 per-structure level rather than having to store it globally.
7124 *) Make it possible for ENGINE structures to be copied when retrieved by
7125 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
7126 This causes the "original" ENGINE structure to act like a template,
7127 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
7128 operational state can be localised to each ENGINE structure, despite the
7129 fact they all share the same "methods". New ENGINE structures returned in
7130 this case have no functional references and the return value is the single
7131 structural reference. This matches the single structural reference returned
7132 by ENGINE_by_id() normally, when it is incremented on the pre-existing
7136 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
7137 needs to match any other type at all we need to manually clear the
7141 *) Changes to the "openssl engine" utility to include;
7142 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
7143 about an ENGINE's available control commands.
7144 - executing control commands from command line arguments using the
7145 '-pre' and '-post' switches. '-post' is only used if '-t' is
7146 specified and the ENGINE is successfully initialised. The syntax for
7147 the individual commands are colon-separated, for example;
7148 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
7151 *) New dynamic control command support for ENGINEs. ENGINEs can now
7152 declare their own commands (numbers), names (strings), descriptions,
7153 and input types for run-time discovery by calling applications. A
7154 subset of these commands are implicitly classed as "executable"
7155 depending on their input type, and only these can be invoked through
7156 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
7157 can be based on user input, config files, etc). The distinction is
7158 that "executable" commands cannot return anything other than a boolean
7159 result and can only support numeric or string input, whereas some
7160 discoverable commands may only be for direct use through
7161 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
7162 pointers, or other custom uses. The "executable" commands are to
7163 support parameterisations of ENGINE behaviour that can be
7164 unambiguously defined by ENGINEs and used consistently across any
7165 OpenSSL-based application. Commands have been added to all the
7166 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
7167 control over shared-library paths without source code alterations.
7170 *) Changed all ENGINE implementations to dynamically allocate their
7171 ENGINEs rather than declaring them statically. Apart from this being
7172 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
7173 this also allows the implementations to compile without using the
7174 internal engine_int.h header.
7177 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
7178 'const' value. Any code that should be able to modify a RAND_METHOD
7179 should already have non-const pointers to it (ie. they should only
7180 modify their own ones).
7183 *) Made a variety of little tweaks to the ENGINE code.
7184 - "atalla" and "ubsec" string definitions were moved from header files
7185 to C code. "nuron" string definitions were placed in variables
7186 rather than hard-coded - allowing parameterisation of these values
7187 later on via ctrl() commands.
7188 - Removed unused "#if 0"'d code.
7189 - Fixed engine list iteration code so it uses ENGINE_free() to release
7190 structural references.
7191 - Constified the RAND_METHOD element of ENGINE structures.
7192 - Constified various get/set functions as appropriate and added
7193 missing functions (including a catch-all ENGINE_cpy that duplicates
7194 all ENGINE values onto a new ENGINE except reference counts/state).
7195 - Removed NULL parameter checks in get/set functions. Setting a method
7196 or function to NULL is a way of cancelling out a previously set
7197 value. Passing a NULL ENGINE parameter is just plain stupid anyway
7198 and doesn't justify the extra error symbols and code.
7199 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
7200 flags from engine_int.h to engine.h.
7201 - Changed prototypes for ENGINE handler functions (init(), finish(),
7202 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
7205 *) Implement binary inversion algorithm for BN_mod_inverse in addition
7206 to the algorithm using long division. The binary algorithm can be
7207 used only if the modulus is odd. On 32-bit systems, it is faster
7208 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
7209 roughly 5-15% for 256-bit moduli), so we use it only for moduli
7210 up to 450 bits. In 64-bit environments, the binary algorithm
7211 appears to be advantageous for much longer moduli; here we use it
7212 for moduli up to 2048 bits.
7215 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
7216 could not support the combine flag in choice fields.
7219 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
7220 extensions from a certificate request to the certificate.
7223 *) Allow multiple 'certopt' and 'nameopt' options to be separated
7224 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
7225 file: this allows the display of the certificate about to be
7226 signed to be customised, to allow certain fields to be included
7227 or excluded and extension details. The old system didn't display
7228 multicharacter strings properly, omitted fields not in the policy
7229 and couldn't display additional details such as extensions.
7232 *) Function EC_POINTs_mul for multiple scalar multiplication
7233 of an arbitrary number of elliptic curve points
7234 \sum scalars[i]*points[i],
7235 optionally including the generator defined for the EC_GROUP:
7236 scalar*generator + \sum scalars[i]*points[i].
7238 EC_POINT_mul is a simple wrapper function for the typical case
7239 that the point list has just one item (besides the optional
7243 *) First EC_METHODs for curves over GF(p):
7245 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
7246 operations and provides various method functions that can also
7247 operate with faster implementations of modular arithmetic.
7249 EC_GFp_mont_method() reuses most functions that are part of
7250 EC_GFp_simple_method, but uses Montgomery arithmetic.
7252 [Bodo Moeller; point addition and point doubling
7253 implementation directly derived from source code provided by
7254 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
7256 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
7257 crypto/ec/ec_lib.c):
7259 Curves are EC_GROUP objects (with an optional group generator)
7260 based on EC_METHODs that are built into the library.
7262 Points are EC_POINT objects based on EC_GROUP objects.
7264 Most of the framework would be able to handle curves over arbitrary
7265 finite fields, but as there are no obvious types for fields other
7266 than GF(p), some functions are limited to that for now.
7269 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
7270 that the file contains a complete HTTP response.
7273 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
7274 change the def and num file printf format specifier from "%-40sXXX"
7275 to "%-39s XXX". The latter will always guarantee a space after the
7276 field while the former will cause them to run together if the field
7277 is 40 of more characters long.
7280 *) Constify the cipher and digest 'method' functions and structures
7281 and modify related functions to take constant EVP_MD and EVP_CIPHER
7285 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
7286 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
7289 *) Modify EVP_Digest*() routines so they now return values. Although the
7290 internal software routines can never fail additional hardware versions
7294 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
7296 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
7297 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
7300 ERR_R_NESTED_ASN1_ERROR
7302 ERR_R_MISSING_ASN1_EOS
7303 were 4 .. 9, conflicting with
7304 ERR_LIB_RSA (= ERR_R_RSA_LIB)
7306 ERR_LIB_PEM (= ERR_R_PEM_LIB).
7307 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
7309 Add new error code 'ERR_R_INTERNAL_ERROR'.
7312 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
7316 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
7317 sets the subject name for a new request or supersedes the
7318 subject name in a given request. Formats that can be parsed are
7319 'CN=Some Name, OU=myOU, C=IT'
7321 'CN=Some Name/OU=myOU/C=IT'.
7323 Add options '-batch' and '-verbose' to 'openssl req'.
7324 [Massimiliano Pala <madwolf@hackmasters.net>]
7326 *) Introduce the possibility to access global variables through
7327 functions on platform were that's the best way to handle exporting
7328 global variables in shared libraries. To enable this functionality,
7329 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
7330 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
7331 is normally done by Configure or something similar).
7333 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
7334 in the source file (foo.c) like this:
7336 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
7337 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
7339 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
7340 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
7342 OPENSSL_DECLARE_GLOBAL(int,foo);
7343 #define foo OPENSSL_GLOBAL_REF(foo)
7344 OPENSSL_DECLARE_GLOBAL(double,bar);
7345 #define bar OPENSSL_GLOBAL_REF(bar)
7347 The #defines are very important, and therefore so is including the
7348 header file everywhere where the defined globals are used.
7350 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
7351 of ASN.1 items, but that structure is a bit different.
7353 The largest change is in util/mkdef.pl which has been enhanced with
7354 better and easier to understand logic to choose which symbols should
7355 go into the Windows .def files as well as a number of fixes and code
7356 cleanup (among others, algorithm keywords are now sorted
7357 lexicographically to avoid constant rewrites).
7360 *) In BN_div() keep a copy of the sign of 'num' before writing the
7361 result to 'rm' because if rm==num the value will be overwritten
7362 and produce the wrong result if 'num' is negative: this caused
7363 problems with BN_mod() and BN_nnmod().
7366 *) Function OCSP_request_verify(). This checks the signature on an
7367 OCSP request and verifies the signer certificate. The signer
7368 certificate is just checked for a generic purpose and OCSP request
7372 *) Add OCSP_check_validity() function to check the validity of OCSP
7373 responses. OCSP responses are prepared in real time and may only
7374 be a few seconds old. Simply checking that the current time lies
7375 between thisUpdate and nextUpdate max reject otherwise valid responses
7376 caused by either OCSP responder or client clock inaccuracy. Instead
7377 we allow thisUpdate and nextUpdate to fall within a certain period of
7378 the current time. The age of the response can also optionally be
7379 checked. Two new options -validity_period and -status_age added to
7383 *) If signature or public key algorithm is unrecognized print out its
7384 OID rather that just UNKNOWN.
7387 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
7388 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
7389 ID to be generated from the issuer certificate alone which can then be
7390 passed to OCSP_id_issuer_cmp().
7393 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
7394 ASN1 modules to export functions returning ASN1_ITEM pointers
7395 instead of the ASN1_ITEM structures themselves. This adds several
7396 new macros which allow the underlying ASN1 function/structure to
7397 be accessed transparently. As a result code should not use ASN1_ITEM
7398 references directly (such as &X509_it) but instead use the relevant
7399 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
7400 use of the new ASN1 code on platforms where exporting structures
7401 is problematical (for example in shared libraries) but exporting
7402 functions returning pointers to structures is not.
7405 *) Add support for overriding the generation of SSL/TLS session IDs.
7406 These callbacks can be registered either in an SSL_CTX or per SSL.
7407 The purpose of this is to allow applications to control, if they wish,
7408 the arbitrary values chosen for use as session IDs, particularly as it
7409 can be useful for session caching in multiple-server environments. A
7410 command-line switch for testing this (and any client code that wishes
7411 to use such a feature) has been added to "s_server".
7412 [Geoff Thorpe, Lutz Jaenicke]
7414 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
7415 of the form '#if defined(...) || defined(...) || ...' and
7416 '#if !defined(...) && !defined(...) && ...'. This also avoids
7417 the growing number of special cases it was previously handling.
7420 *) Make all configuration macros available for application by making
7421 sure they are available in opensslconf.h, by giving them names starting
7422 with "OPENSSL_" to avoid conflicts with other packages and by making
7423 sure e_os2.h will cover all platform-specific cases together with
7425 Additionally, it is now possible to define configuration/platform-
7426 specific names (called "system identities"). In the C code, these
7427 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
7428 macro with the name beginning with "OPENSSL_SYS_", which is determined
7429 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
7433 *) New option -set_serial to 'req' and 'x509' this allows the serial
7434 number to use to be specified on the command line. Previously self
7435 signed certificates were hard coded with serial number 0 and the
7436 CA options of 'x509' had to use a serial number in a file which was
7440 *) New options to 'ca' utility to support V2 CRL entry extensions.
7441 Currently CRL reason, invalidity date and hold instruction are
7442 supported. Add new CRL extensions to V3 code and some new objects.
7445 *) New function EVP_CIPHER_CTX_set_padding() this is used to
7446 disable standard block padding (aka PKCS#5 padding) in the EVP
7447 API, which was previously mandatory. This means that the data is
7448 not padded in any way and so the total length much be a multiple
7449 of the block size, otherwise an error occurs.
7452 *) Initial (incomplete) OCSP SSL support.
7455 *) New function OCSP_parse_url(). This splits up a URL into its host,
7456 port and path components: primarily to parse OCSP URLs. New -url
7457 option to ocsp utility.
7460 *) New nonce behavior. The return value of OCSP_check_nonce() now
7461 reflects the various checks performed. Applications can decide
7462 whether to tolerate certain situations such as an absent nonce
7463 in a response when one was present in a request: the ocsp application
7464 just prints out a warning. New function OCSP_add1_basic_nonce()
7465 this is to allow responders to include a nonce in a response even if
7466 the request is nonce-less.
7469 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
7470 skipped when using openssl x509 multiple times on a single input file,
7471 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
7474 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
7475 set string type: to handle setting ASN1_TIME structures. Fix ca
7476 utility to correctly initialize revocation date of CRLs.
7479 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
7480 the clients preferred ciphersuites and rather use its own preferences.
7481 Should help to work around M$ SGC (Server Gated Cryptography) bug in
7482 Internet Explorer by ensuring unchanged hash method during stepup.
7483 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
7486 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
7487 to aes and add a new 'exist' option to print out symbols that don't
7491 *) Additional options to ocsp utility to allow flags to be set and
7492 additional certificates supplied.
7495 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
7496 OCSP client a number of certificate to only verify the response
7500 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
7501 handle the new API. Currently only ECB, CBC modes supported. Add new
7504 Add TLS AES ciphersuites as described in RFC3268, "Advanced
7505 Encryption Standard (AES) Ciphersuites for Transport Layer
7506 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
7507 not enabled by default and were not part of the "ALL" ciphersuite
7508 alias because they were not yet official; they could be
7509 explicitly requested by specifying the "AESdraft" ciphersuite
7510 group alias. In the final release of OpenSSL 0.9.7, the group
7511 alias is called "AES" and is part of "ALL".)
7512 [Ben Laurie, Steve Henson, Bodo Moeller]
7514 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
7515 request to response.
7518 *) Functions for OCSP responders. OCSP_request_onereq_count(),
7519 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
7520 extract information from a certificate request. OCSP_response_create()
7521 creates a response and optionally adds a basic response structure.
7522 OCSP_basic_add1_status() adds a complete single response to a basic
7523 response and returns the OCSP_SINGLERESP structure just added (to allow
7524 extensions to be included for example). OCSP_basic_add1_cert() adds a
7525 certificate to a basic response and OCSP_basic_sign() signs a basic
7526 response with various flags. New helper functions ASN1_TIME_check()
7527 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
7528 (converts ASN1_TIME to GeneralizedTime).
7531 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
7532 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
7533 structure from a certificate. X509_pubkey_digest() digests the public_key
7534 contents: this is used in various key identifiers.
7537 *) Make sk_sort() tolerate a NULL argument.
7538 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
7540 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
7541 passed by the function are trusted implicitly. If any of them signed the
7542 response then it is assumed to be valid and is not verified.
7545 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
7546 to data. This was previously part of the PKCS7 ASN1 code. This
7547 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
7548 [Steve Henson, reported by Kenneth R. Robinette
7549 <support@securenetterm.com>]
7551 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
7552 routines: without these tracing memory leaks is very painful.
7553 Fix leaks in PKCS12 and PKCS7 routines.
7556 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
7557 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
7558 effectively meant GeneralizedTime would never be used. Now it
7559 is initialised to -1 but X509_time_adj() now has to check the value
7560 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
7561 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
7562 [Steve Henson, reported by Kenneth R. Robinette
7563 <support@securenetterm.com>]
7565 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
7566 result in a zero length in the ASN1_INTEGER structure which was
7567 not consistent with the structure when d2i_ASN1_INTEGER() was used
7568 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
7569 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
7570 where it did not print out a minus for negative ASN1_INTEGER.
7573 *) Add summary printout to ocsp utility. The various functions which
7574 convert status values to strings have been renamed to:
7575 OCSP_response_status_str(), OCSP_cert_status_str() and
7576 OCSP_crl_reason_str() and are no longer static. New options
7577 to verify nonce values and to disable verification. OCSP response
7578 printout format cleaned up.
7581 *) Add additional OCSP certificate checks. These are those specified
7582 in RFC2560. This consists of two separate checks: the CA of the
7583 certificate being checked must either be the OCSP signer certificate
7584 or the issuer of the OCSP signer certificate. In the latter case the
7585 OCSP signer certificate must contain the OCSP signing extended key
7586 usage. This check is performed by attempting to match the OCSP
7587 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
7588 in the OCSP_CERTID structures of the response.
7591 *) Initial OCSP certificate verification added to OCSP_basic_verify()
7592 and related routines. This uses the standard OpenSSL certificate
7593 verify routines to perform initial checks (just CA validity) and
7594 to obtain the certificate chain. Then additional checks will be
7595 performed on the chain. Currently the root CA is checked to see
7596 if it is explicitly trusted for OCSP signing. This is used to set
7597 a root CA as a global signing root: that is any certificate that
7598 chains to that CA is an acceptable OCSP signing certificate.
7601 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
7602 extensions from a separate configuration file.
7603 As when reading extensions from the main configuration file,
7604 the '-extensions ...' option may be used for specifying the
7606 [Massimiliano Pala <madwolf@comune.modena.it>]
7608 *) New OCSP utility. Allows OCSP requests to be generated or
7609 read. The request can be sent to a responder and the output
7610 parsed, outputed or printed in text form. Not complete yet:
7611 still needs to check the OCSP response validity.
7614 *) New subcommands for 'openssl ca':
7615 'openssl ca -status <serial>' prints the status of the cert with
7616 the given serial number (according to the index file).
7617 'openssl ca -updatedb' updates the expiry status of certificates
7619 [Massimiliano Pala <madwolf@comune.modena.it>]
7621 *) New '-newreq-nodes' command option to CA.pl. This is like
7622 '-newreq', but calls 'openssl req' with the '-nodes' option
7623 so that the resulting key is not encrypted.
7624 [Damien Miller <djm@mindrot.org>]
7626 *) New configuration for the GNU Hurd.
7627 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
7629 *) Initial code to implement OCSP basic response verify. This
7630 is currently incomplete. Currently just finds the signer's
7631 certificate and verifies the signature on the response.
7634 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
7635 value of OPENSSLDIR. This is available via the new '-d' option
7636 to 'openssl version', and is also included in 'openssl version -a'.
7639 *) Allowing defining memory allocation callbacks that will be given
7640 file name and line number information in additional arguments
7641 (a const char* and an int). The basic functionality remains, as
7642 well as the original possibility to just replace malloc(),
7643 realloc() and free() by functions that do not know about these
7644 additional arguments. To register and find out the current
7645 settings for extended allocation functions, the following
7646 functions are provided:
7648 CRYPTO_set_mem_ex_functions
7649 CRYPTO_set_locked_mem_ex_functions
7650 CRYPTO_get_mem_ex_functions
7651 CRYPTO_get_locked_mem_ex_functions
7653 These work the same way as CRYPTO_set_mem_functions and friends.
7654 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
7655 extended allocation function is enabled.
7656 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
7657 a conventional allocation function is enabled.
7658 [Richard Levitte, Bodo Moeller]
7660 *) Finish off removing the remaining LHASH function pointer casts.
7661 There should no longer be any prototype-casting required when using
7662 the LHASH abstraction, and any casts that remain are "bugs". See
7663 the callback types and macros at the head of lhash.h for details
7664 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
7667 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
7668 If /dev/[u]random devices are not available or do not return enough
7669 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
7671 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
7672 /etc/entropy will be queried once each in this sequence, querying stops
7673 when enough entropy was collected without querying more sockets.
7676 *) Change the Unix RAND_poll() variant to be able to poll several
7677 random devices, as specified by DEVRANDOM, until a sufficient amount
7678 of data has been collected. We spend at most 10 ms on each file
7679 (select timeout) and read in non-blocking mode. DEVRANDOM now
7680 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
7681 (previously it was just the string "/dev/urandom"), so on typical
7682 platforms the 10 ms delay will never occur.
7683 Also separate out the Unix variant to its own file, rand_unix.c.
7684 For VMS, there's a currently-empty rand_vms.c.
7687 *) Move OCSP client related routines to ocsp_cl.c. These
7688 provide utility functions which an application needing
7689 to issue a request to an OCSP responder and analyse the
7690 response will typically need: as opposed to those which an
7691 OCSP responder itself would need which will be added later.
7693 OCSP_request_sign() signs an OCSP request with an API similar
7694 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
7695 response. OCSP_response_get1_basic() extracts basic response
7696 from response. OCSP_resp_find_status(): finds and extracts status
7697 information from an OCSP_CERTID structure (which will be created
7698 when the request structure is built). These are built from lower
7699 level functions which work on OCSP_SINGLERESP structures but
7700 won't normally be used unless the application wishes to examine
7701 extensions in the OCSP response for example.
7703 Replace nonce routines with a pair of functions.
7704 OCSP_request_add1_nonce() adds a nonce value and optionally
7705 generates a random value. OCSP_check_nonce() checks the
7706 validity of the nonce in an OCSP response.
7709 *) Change function OCSP_request_add() to OCSP_request_add0_id().
7710 This doesn't copy the supplied OCSP_CERTID and avoids the
7711 need to free up the newly created id. Change return type
7712 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
7713 This can then be used to add extensions to the request.
7714 Deleted OCSP_request_new(), since most of its functionality
7715 is now in OCSP_REQUEST_new() (and the case insensitive name
7716 clash) apart from the ability to set the request name which
7717 will be added elsewhere.
7720 *) Update OCSP API. Remove obsolete extensions argument from
7721 various functions. Extensions are now handled using the new
7722 OCSP extension code. New simple OCSP HTTP function which
7723 can be used to send requests and parse the response.
7726 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
7727 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
7728 uses the special reorder version of SET OF to sort the attributes
7729 and reorder them to match the encoded order. This resolves a long
7730 standing problem: a verify on a PKCS7 structure just after signing
7731 it used to fail because the attribute order did not match the
7732 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
7733 it uses the received order. This is necessary to tolerate some broken
7734 software that does not order SET OF. This is handled by encoding
7735 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
7736 to produce the required SET OF.
7739 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
7740 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
7741 files to get correct declarations of the ASN.1 item variables.
7744 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
7745 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
7746 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
7747 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
7748 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
7749 ASN1_ITEM and no wrapper functions.
7752 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
7753 replace the old function pointer based I/O routines. Change most of
7754 the *_d2i_bio() and *_d2i_fp() functions to use these.
7757 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
7758 lines, recognice more "algorithms" that can be deselected, and make
7759 it complain about algorithm deselection that isn't recognised.
7762 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
7763 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
7764 to use new functions. Add NO_ASN1_OLD which can be set to remove
7765 some old style ASN1 functions: this can be used to determine if old
7766 code will still work when these eventually go away.
7769 *) New extension functions for OCSP structures, these follow the
7770 same conventions as certificates and CRLs.
7773 *) New function X509V3_add1_i2d(). This automatically encodes and
7774 adds an extension. Its behaviour can be customised with various
7775 flags to append, replace or delete. Various wrappers added for
7776 certificates and CRLs.
7779 *) Fix to avoid calling the underlying ASN1 print routine when
7780 an extension cannot be parsed. Correct a typo in the
7781 OCSP_SERVICELOC extension. Tidy up print OCSP format.
7784 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate
7785 entries for variables.
7788 *) Add functionality to apps/openssl.c for detecting locking
7789 problems: As the program is single-threaded, all we have
7790 to do is register a locking callback using an array for
7791 storing which locks are currently held by the program.
7794 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
7795 SSL_get_ex_data_X509_STORE_idx(), which is used in
7796 ssl_verify_cert_chain() and thus can be called at any time
7797 during TLS/SSL handshakes so that thread-safety is essential.
7798 Unfortunately, the ex_data design is not at all suited
7799 for multi-threaded use, so it probably should be abolished.
7802 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
7803 [Broadcom, tweaked and integrated by Geoff Thorpe]
7805 *) Move common extension printing code to new function
7806 X509V3_print_extensions(). Reorganise OCSP print routines and
7807 implement some needed OCSP ASN1 functions. Add OCSP extensions.
7810 *) New function X509_signature_print() to remove duplication in some
7814 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
7815 set (this was treated exactly the same as SET OF previously). This
7816 is used to reorder the STACK representing the structure to match the
7817 encoding. This will be used to get round a problem where a PKCS7
7818 structure which was signed could not be verified because the STACK
7819 order did not reflect the encoded order.
7822 *) Reimplement the OCSP ASN1 module using the new code.
7825 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
7826 for its ASN1 operations. The old style function pointers still exist
7827 for now but they will eventually go away.
7830 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
7831 completely replaces the old ASN1 functionality with a table driven
7832 encoder and decoder which interprets an ASN1_ITEM structure describing
7833 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
7834 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
7835 has also been converted to the new form.
7838 *) Change BN_mod_exp_recp so that negative moduli are tolerated
7839 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
7840 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
7841 for negative moduli.
7844 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
7845 of not touching the result's sign bit.
7848 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
7852 *) Changed the LHASH code to use prototypes for callbacks, and created
7853 macros to declare and implement thin (optionally static) functions
7854 that provide type-safety and avoid function pointer casting for the
7855 type-specific callbacks.
7858 *) Added Kerberos Cipher Suites to be used with TLS, as written in
7860 [Veers Staats <staatsvr@asc.hpc.mil>,
7861 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
7863 *) Reformat the FAQ so the different questions and answers can be divided
7864 in sections depending on the subject.
7867 *) Have the zlib compression code load ZLIB.DLL dynamically under
7871 *) New function BN_mod_sqrt for computing square roots modulo a prime
7872 (using the probabilistic Tonelli-Shanks algorithm unless
7873 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
7874 be handled deterministically).
7875 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7877 *) Make BN_mod_inverse faster by explicitly handling small quotients
7878 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
7879 512 bits], about 30% for larger ones [1024 or 2048 bits].)
7882 *) New function BN_kronecker.
7885 *) Fix BN_gcd so that it works on negative inputs; the result is
7886 positive unless both parameters are zero.
7887 Previously something reasonably close to an infinite loop was
7888 possible because numbers could be growing instead of shrinking
7889 in the implementation of Euclid's algorithm.
7892 *) Fix BN_is_word() and BN_is_one() macros to take into account the
7893 sign of the number in question.
7895 Fix BN_is_word(a,w) to work correctly for w == 0.
7897 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
7898 because its test if the absolute value of 'a' equals 'w'.
7899 Note that BN_abs_is_word does *not* handle w == 0 reliably;
7900 it exists mostly for use in the implementations of BN_is_zero(),
7901 BN_is_one(), and BN_is_word().
7904 *) New function BN_swap.
7907 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
7908 the exponentiation functions are more likely to produce reasonable
7909 results on negative inputs.
7912 *) Change BN_mod_mul so that the result is always non-negative.
7913 Previously, it could be negative if one of the factors was negative;
7914 I don't think anyone really wanted that behaviour.
7917 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
7918 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
7919 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
7920 and add new functions:
7929 BN_mod_lshift1_quick
7933 These functions always generate non-negative results.
7935 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
7936 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
7938 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
7939 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
7940 be reduced modulo m.
7941 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
7944 The following entry accidentally appeared in the CHANGES file
7945 distributed with OpenSSL 0.9.7. The modifications described in
7946 it do *not* apply to OpenSSL 0.9.7.
7948 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
7949 was actually never needed) and in BN_mul(). The removal in BN_mul()
7950 required a small change in bn_mul_part_recursive() and the addition
7951 of the functions bn_cmp_part_words(), bn_sub_part_words() and
7952 bn_add_part_words(), which do the same thing as bn_cmp_words(),
7953 bn_sub_words() and bn_add_words() except they take arrays with
7958 *) In 'openssl passwd', verify passwords read from the terminal
7959 unless the '-salt' option is used (which usually means that
7960 verification would just waste user's time since the resulting
7961 hash is going to be compared with some given password hash)
7962 or the new '-noverify' option is used.
7964 This is an incompatible change, but it does not affect
7965 non-interactive use of 'openssl passwd' (passwords on the command
7966 line, '-stdin' option, '-in ...' option) and thus should not
7970 *) Remove all references to RSAref, since there's no more need for it.
7973 *) Make DSO load along a path given through an environment variable
7974 (SHLIB_PATH) with shl_load().
7977 *) Constify the ENGINE code as a result of BIGNUM constification.
7978 Also constify the RSA code and most things related to it. In a
7979 few places, most notable in the depth of the ASN.1 code, ugly
7980 casts back to non-const were required (to be solved at a later
7984 *) Make it so the openssl application has all engines loaded by default.
7987 *) Constify the BIGNUM routines a little more.
7990 *) Add the following functions:
7992 ENGINE_load_cswift()
7994 ENGINE_load_atalla()
7996 ENGINE_load_builtin_engines()
7998 That way, an application can itself choose if external engines that
7999 are built-in in OpenSSL shall ever be used or not. The benefit is
8000 that applications won't have to be linked with libdl or other dso
8001 libraries unless it's really needed.
8003 Changed 'openssl engine' to load all engines on demand.
8004 Changed the engine header files to avoid the duplication of some
8005 declarations (they differed!).
8008 *) 'openssl engine' can now list capabilities.
8011 *) Better error reporting in 'openssl engine'.
8014 *) Never call load_dh_param(NULL) in s_server.
8017 *) Add engine application. It can currently list engines by name and
8018 identity, and test if they are actually available.
8021 *) Improve RPM specification file by forcing symbolic linking and making
8022 sure the installed documentation is also owned by root.root.
8023 [Damien Miller <djm@mindrot.org>]
8025 *) Give the OpenSSL applications more possibilities to make use of
8026 keys (public as well as private) handled by engines.
8029 *) Add OCSP code that comes from CertCo.
8032 *) Add VMS support for the Rijndael code.
8035 *) Added untested support for Nuron crypto accelerator.
8038 *) Add support for external cryptographic devices. This code was
8039 previously distributed separately as the "engine" branch.
8040 [Geoff Thorpe, Richard Levitte]
8042 *) Rework the filename-translation in the DSO code. It is now possible to
8043 have far greater control over how a "name" is turned into a filename
8044 depending on the operating environment and any oddities about the
8045 different shared library filenames on each system.
8048 *) Support threads on FreeBSD-elf in Configure.
8051 *) Fix for SHA1 assembly problem with MASM: it produces
8052 warnings about corrupt line number information when assembling
8053 with debugging information. This is caused by the overlapping
8055 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
8058 NCONF_get_number() has no error checking at all. As a replacement,
8059 NCONF_get_number_e() is defined (_e for "error checking") and is
8060 promoted strongly. The old NCONF_get_number is kept around for
8061 binary backward compatibility.
8062 Make it possible for methods to load from something other than a BIO,
8063 by providing a function pointer that is given a name instead of a BIO.
8064 For example, this could be used to load configuration data from an
8068 *) Fix for non blocking accept BIOs. Added new I/O special reason
8069 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
8070 with non blocking I/O was not possible because no retry code was
8071 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
8075 *) Added the beginnings of Rijndael support.
8078 *) Fix for bug in DirectoryString mask setting. Add support for
8079 X509_NAME_print_ex() in 'req' and X509_print_ex() function
8080 to allow certificate printing to more controllable, additional
8081 'certopt' option to 'x509' to allow new printing options to be
8085 *) Clean old EAY MD5 hack from e_os.h.
8088 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
8090 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
8091 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
8092 [Joe Orton, Steve Henson]
8094 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
8096 *) Fix additional bug revealed by the NISCC test suite:
8098 Stop bug triggering large recursion when presented with
8099 certain ASN.1 tags (CVE-2003-0851)
8102 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
8104 *) Fix various bugs revealed by running the NISCC test suite:
8106 Stop out of bounds reads in the ASN1 code when presented with
8107 invalid tags (CVE-2003-0543 and CVE-2003-0544).
8109 If verify callback ignores invalid public key errors don't try to check
8110 certificate signature with the NULL public key.
8114 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
8115 if the server requested one: as stated in TLS 1.0 and SSL 3.0
8119 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
8120 extra data after the compression methods not only for TLS 1.0
8121 but also for SSL 3.0 (as required by the specification).
8122 [Bodo Moeller; problem pointed out by Matthias Loepfe]
8124 *) Change X509_certificate_type() to mark the key as exported/exportable
8125 when it's 512 *bits* long, not 512 bytes.
8128 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
8130 *) Countermeasure against the Klima-Pokorny-Rosa extension of
8131 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
8132 a protocol version number mismatch like a decryption error
8133 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
8136 *) Turn on RSA blinding by default in the default implementation
8137 to avoid a timing attack. Applications that don't want it can call
8138 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
8139 They would be ill-advised to do so in most cases.
8140 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
8142 *) Change RSA blinding code so that it works when the PRNG is not
8143 seeded (in this case, the secret RSA exponent is abused as
8144 an unpredictable seed -- if it is not unpredictable, there
8145 is no point in blinding anyway). Make RSA blinding thread-safe
8146 by remembering the creator's thread ID in rsa->blinding and
8147 having all other threads use local one-time blinding factors
8148 (this requires more computation than sharing rsa->blinding, but
8149 avoids excessive locking; and if an RSA object is not shared
8150 between threads, blinding will still be very fast).
8153 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
8155 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
8156 via timing by performing a MAC computation even if incorrrect
8157 block cipher padding has been found. This is a countermeasure
8158 against active attacks where the attacker has to distinguish
8159 between bad padding and a MAC verification error. (CVE-2003-0078)
8161 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
8162 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
8163 Martin Vuagnoux (EPFL, Ilion)]
8165 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
8167 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
8168 memory from it's contents. This is done with a counter that will
8169 place alternating values in each byte. This can be used to solve
8170 two issues: 1) the removal of calls to memset() by highly optimizing
8171 compilers, and 2) cleansing with other values than 0, since those can
8172 be read through on certain media, for example a swap space on disk.
8175 *) Bugfix: client side session caching did not work with external caching,
8176 because the session->cipher setting was not restored when reloading
8177 from the external cache. This problem was masked, when
8178 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
8179 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
8182 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
8183 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
8184 [Zeev Lieber <zeev-l@yahoo.com>]
8186 *) Undo an undocumented change introduced in 0.9.6e which caused
8187 repeated calls to OpenSSL_add_all_ciphers() and
8188 OpenSSL_add_all_digests() to be ignored, even after calling
8192 *) Change the default configuration reader to deal with last line not
8193 being properly terminated.
8196 *) Change X509_NAME_cmp() so it applies the special rules on handling
8197 DN values that are of type PrintableString, as well as RDNs of type
8198 emailAddress where the value has the type ia5String.
8199 [stefank@valicert.com via Richard Levitte]
8201 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
8202 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
8203 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
8204 the bitwise-OR of the two for use by the majority of applications
8205 wanting this behaviour, and update the docs. The documented
8206 behaviour and actual behaviour were inconsistent and had been
8207 changing anyway, so this is more a bug-fix than a behavioural
8209 [Geoff Thorpe, diagnosed by Nadav Har'El]
8211 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
8212 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
8215 *) Fix initialization code race conditions in
8216 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
8217 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
8218 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
8219 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
8220 ssl2_get_cipher_by_char(),
8221 ssl3_get_cipher_by_char().
8222 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
8224 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
8225 the cached sessions are flushed, as the remove_cb() might use ex_data
8226 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
8227 (see [openssl.org #212]).
8228 [Geoff Thorpe, Lutz Jaenicke]
8230 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
8231 length, instead of the encoding length to d2i_ASN1_OBJECT.
8234 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
8236 *) [In 0.9.6g-engine release:]
8237 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
8238 [Lynn Gazis <lgazis@rainbow.com>]
8240 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
8242 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
8243 and get fix the header length calculation.
8244 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
8245 Alon Kantor <alonk@checkpoint.com> (and others),
8248 *) Use proper error handling instead of 'assertions' in buffer
8249 overflow checks added in 0.9.6e. This prevents DoS (the
8250 assertions could call abort()).
8251 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
8253 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
8255 *) Add various sanity checks to asn1_get_length() to reject
8256 the ASN1 length bytes if they exceed sizeof(long), will appear
8257 negative or the content length exceeds the length of the
8259 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8261 *) Fix cipher selection routines: ciphers without encryption had no flags
8262 for the cipher strength set and where therefore not handled correctly
8263 by the selection routines (PR #130).
8266 *) Fix EVP_dsa_sha macro.
8270 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
8271 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
8272 that was added in OpenSSL 0.9.6d.
8274 As the countermeasure turned out to be incompatible with some
8275 broken SSL implementations, the new option is part of SSL_OP_ALL.
8276 SSL_OP_ALL is usually employed when compatibility with weird SSL
8277 implementations is desired (e.g. '-bugs' option to 's_client' and
8278 's_server'), so the new option is automatically set in many
8282 *) Changes in security patch:
8284 Changes marked "(CHATS)" were sponsored by the Defense Advanced
8285 Research Projects Agency (DARPA) and Air Force Research Laboratory,
8286 Air Force Materiel Command, USAF, under agreement number
8289 *) Add various sanity checks to asn1_get_length() to reject
8290 the ASN1 length bytes if they exceed sizeof(long), will appear
8291 negative or the content length exceeds the length of the
8292 supplied buffer. (CVE-2002-0659)
8293 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
8295 *) Assertions for various potential buffer overflows, not known to
8297 [Ben Laurie (CHATS)]
8299 *) Various temporary buffers to hold ASCII versions of integers were
8300 too small for 64 bit platforms. (CVE-2002-0655)
8301 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
8303 *) Remote buffer overflow in SSL3 protocol - an attacker could
8304 supply an oversized session ID to a client. (CVE-2002-0656)
8305 [Ben Laurie (CHATS)]
8307 *) Remote buffer overflow in SSL2 protocol - an attacker could
8308 supply an oversized client master key. (CVE-2002-0656)
8309 [Ben Laurie (CHATS)]
8311 Changes between 0.9.6c and 0.9.6d [9 May 2002]
8313 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
8314 encoded as NULL) with id-dsa-with-sha1.
8315 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
8317 *) Check various X509_...() return values in apps/req.c.
8318 [Nils Larsch <nla@trustcenter.de>]
8320 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
8321 an end-of-file condition would erroneously be flagged, when the CRLF
8322 was just at the end of a processed block. The bug was discovered when
8323 processing data through a buffering memory BIO handing the data to a
8324 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
8325 <ptsekov@syntrex.com> and Nedelcho Stanev.
8328 *) Implement a countermeasure against a vulnerability recently found
8329 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
8330 before application data chunks to avoid the use of known IVs
8331 with data potentially chosen by the attacker.
8334 *) Fix length checks in ssl3_get_client_hello().
8337 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
8338 to prevent ssl3_read_internal() from incorrectly assuming that
8339 ssl3_read_bytes() found application data while handshake
8340 processing was enabled when in fact s->s3->in_read_app_data was
8341 merely automatically cleared during the initial handshake.
8342 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
8344 *) Fix object definitions for Private and Enterprise: they were not
8345 recognized in their shortname (=lowercase) representation. Extend
8346 obj_dat.pl to issue an error when using undefined keywords instead
8347 of silently ignoring the problem (Svenning Sorensen
8348 <sss@sss.dnsalias.net>).
8351 *) Fix DH_generate_parameters() so that it works for 'non-standard'
8352 generators, i.e. generators other than 2 and 5. (Previously, the
8353 code did not properly initialise the 'add' and 'rem' values to
8354 BN_generate_prime().)
8356 In the new general case, we do not insist that 'generator' is
8357 actually a primitive root: This requirement is rather pointless;
8358 a generator of the order-q subgroup is just as good, if not
8362 *) Map new X509 verification errors to alerts. Discovered and submitted by
8363 Tom Wu <tom@arcot.com>.
8366 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
8367 returning non-zero before the data has been completely received
8368 when using non-blocking I/O.
8369 [Bodo Moeller; problem pointed out by John Hughes]
8371 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
8372 [Ben Laurie, Lutz Jaenicke]
8374 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
8375 Yoram Zahavi <YoramZ@gilian.com>).
8378 *) Add information about CygWin 1.3 and on, and preserve proper
8379 configuration for the versions before that.
8380 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
8382 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
8383 check whether we deal with a copy of a session and do not delete from
8384 the cache in this case. Problem reported by "Izhar Shoshani Levi"
8385 <izhar@checkpoint.com>.
8388 *) Do not store session data into the internal session cache, if it
8389 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
8390 flag is set). Proposed by Aslam <aslam@funk.com>.
8393 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
8397 *) [In 0.9.6d-engine release:]
8398 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
8399 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
8401 *) Add the configuration target linux-s390x.
8402 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
8404 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
8405 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
8406 variable as an indication that a ClientHello message has been
8407 received. As the flag value will be lost between multiple
8408 invocations of ssl3_accept when using non-blocking I/O, the
8409 function may not be aware that a handshake has actually taken
8410 place, thus preventing a new session from being added to the
8413 To avoid this problem, we now set s->new_session to 2 instead of
8414 using a local variable.
8415 [Lutz Jaenicke, Bodo Moeller]
8417 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
8418 if the SSL_R_LENGTH_MISMATCH error is detected.
8419 [Geoff Thorpe, Bodo Moeller]
8421 *) New 'shared_ldflag' column in Configure platform table.
8424 *) Fix EVP_CIPHER_mode macro.
8425 ["Dan S. Camper" <dan@bti.net>]
8427 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
8428 type, we must throw them away by setting rr->length to 0.
8429 [D P Chang <dpc@qualys.com>]
8431 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
8433 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
8434 <Dominikus.Scherkl@biodata.com>. (The previous implementation
8435 worked incorrectly for those cases where range = 10..._2 and
8436 3*range is two bits longer than range.)
8439 *) Only add signing time to PKCS7 structures if it is not already
8443 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
8444 OBJ_ld_ce should be OBJ_id_ce.
8445 Also some ip-pda OIDs in crypto/objects/objects.txt were
8446 incorrect (cf. RFC 3039).
8447 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
8449 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
8450 returns early because it has nothing to do.
8451 [Andy Schneider <andy.schneider@bjss.co.uk>]
8453 *) [In 0.9.6c-engine release:]
8454 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
8455 [Andy Schneider <andy.schneider@bjss.co.uk>]
8457 *) [In 0.9.6c-engine release:]
8458 Add support for Cryptographic Appliance's keyserver technology.
8459 (Use engine 'keyclient')
8460 [Cryptographic Appliances and Geoff Thorpe]
8462 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
8463 is called via tools/c89.sh because arguments have to be
8464 rearranged (all '-L' options must appear before the first object
8466 [Richard Shapiro <rshapiro@abinitio.com>]
8468 *) [In 0.9.6c-engine release:]
8469 Add support for Broadcom crypto accelerator cards, backported
8471 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
8473 *) [In 0.9.6c-engine release:]
8474 Add support for SureWare crypto accelerator cards from
8475 Baltimore Technologies. (Use engine 'sureware')
8476 [Baltimore Technologies and Mark Cox]
8478 *) [In 0.9.6c-engine release:]
8479 Add support for crypto accelerator cards from Accelerated
8480 Encryption Processing, www.aep.ie. (Use engine 'aep')
8481 [AEP Inc. and Mark Cox]
8483 *) Add a configuration entry for gcc on UnixWare.
8484 [Gary Benson <gbenson@redhat.com>]
8486 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
8487 messages are stored in a single piece (fixed-length part and
8488 variable-length part combined) and fix various bugs found on the way.
8491 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
8492 instead. BIO_gethostbyname() does not know what timeouts are
8493 appropriate, so entries would stay in cache even when they have
8495 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
8497 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
8498 faced with a pathologically small ClientHello fragment that does
8499 not contain client_version: Instead of aborting with an error,
8500 simply choose the highest available protocol version (i.e.,
8501 TLS 1.0 unless it is disabled). In practice, ClientHello
8502 messages are never sent like this, but this change gives us
8503 strictly correct behaviour at least for TLS.
8506 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
8507 never resets s->method to s->ctx->method when called from within
8508 one of the SSL handshake functions.
8509 [Bodo Moeller; problem pointed out by Niko Baric]
8511 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
8512 (sent using the client's version number) if client_version is
8513 smaller than the protocol version in use. Also change
8514 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
8515 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
8516 the client will at least see that alert.
8519 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
8523 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
8524 client receives HelloRequest while in a handshake.
8525 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
8527 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
8528 should end in 'break', not 'goto end' which circumvents various
8529 cleanups done in state SSL_ST_OK. But session related stuff
8530 must be disabled for SSL_ST_OK in the case that we just sent a
8533 Also avoid some overhead by not calling ssl_init_wbio_buffer()
8534 before just sending a HelloRequest.
8535 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
8537 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
8538 reveal whether illegal block cipher padding was found or a MAC
8539 verification error occurred. (Neither SSLerr() codes nor alerts
8540 are directly visible to potential attackers, but the information
8541 may leak via logfiles.)
8543 Similar changes are not required for the SSL 2.0 implementation
8544 because the number of padding bytes is sent in clear for SSL 2.0,
8545 and the extra bytes are just ignored. However ssl/s2_pkt.c
8546 failed to verify that the purported number of padding bytes is in
8550 *) Add OpenUNIX-8 support including shared libraries
8551 (Boyd Lynn Gerber <gerberb@zenez.com>).
8554 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
8555 'wristwatch attack' using huge encoding parameters (cf.
8556 James H. Manger's CRYPTO 2001 paper). Note that the
8557 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
8558 encoding parameters and hence was not vulnerable.
8561 *) BN_sqr() bug fix.
8562 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
8564 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
8565 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
8566 followed by modular reduction.
8567 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
8569 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
8570 equivalent based on BN_pseudo_rand() instead of BN_rand().
8573 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
8574 This function was broken, as the check for a new client hello message
8575 to handle SGC did not allow these large messages.
8576 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
8579 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
8582 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
8583 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
8586 *) Rework the configuration and shared library support for Tru64 Unix.
8587 The configuration part makes use of modern compiler features and
8588 still retains old compiler behavior for those that run older versions
8589 of the OS. The shared library support part includes a variant that
8590 uses the RPATH feature, and is available through the special
8591 configuration target "alpha-cc-rpath", which will never be selected
8593 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
8595 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
8596 with the same message size as in ssl3_get_certificate_request().
8597 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
8598 messages might inadvertently be reject as too long.
8599 [Petr Lampa <lampa@fee.vutbr.cz>]
8601 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
8604 *) Modified SSL library such that the verify_callback that has been set
8605 specificly for an SSL object with SSL_set_verify() is actually being
8606 used. Before the change, a verify_callback set with this function was
8607 ignored and the verify_callback() set in the SSL_CTX at the time of
8608 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
8609 to allow the necessary settings.
8612 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
8613 explicitly to NULL, as at least on Solaris 8 this seems not always to be
8614 done automatically (in contradiction to the requirements of the C
8615 standard). This made problems when used from OpenSSH.
8618 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
8619 dh->length and always used
8621 BN_rand_range(priv_key, dh->p).
8623 BN_rand_range() is not necessary for Diffie-Hellman, and this
8624 specific range makes Diffie-Hellman unnecessarily inefficient if
8625 dh->length (recommended exponent length) is much smaller than the
8626 length of dh->p. We could use BN_rand_range() if the order of
8627 the subgroup was stored in the DH structure, but we only have
8632 BN_rand(priv_key, l, ...)
8634 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
8640 RSA_eay_public_encrypt
8641 RSA_eay_private_decrypt
8642 RSA_eay_private_encrypt (signing)
8643 RSA_eay_public_decrypt (signature verification)
8645 (default implementations for RSA_public_encrypt,
8646 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
8647 always reject numbers >= n.
8650 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
8651 to synchronize access to 'locking_thread'. This is necessary on
8652 systems where access to 'locking_thread' (an 'unsigned long'
8653 variable) is not atomic.
8656 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
8657 *before* setting the 'crypto_lock_rand' flag. The previous code had
8658 a race condition if 0 is a valid thread ID.
8659 [Travis Vitek <vitek@roguewave.com>]
8661 *) Add support for shared libraries under Irix.
8662 [Albert Chin-A-Young <china@thewrittenword.com>]
8664 *) Add configuration option to build on Linux on both big-endian and
8666 [Ralf Baechle <ralf@uni-koblenz.de>]
8668 *) Add the possibility to create shared libraries on HP-UX.
8671 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
8673 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
8674 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
8675 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
8676 PRNG state recovery was possible based on the output of
8677 one PRNG request appropriately sized to gain knowledge on
8678 'md' followed by enough consecutive 1-byte PRNG requests
8679 to traverse all of 'state'.
8681 1. When updating 'md_local' (the current thread's copy of 'md')
8682 during PRNG output generation, hash all of the previous
8683 'md_local' value, not just the half used for PRNG output.
8685 2. Make the number of bytes from 'state' included into the hash
8686 independent from the number of PRNG bytes requested.
8688 The first measure alone would be sufficient to avoid
8689 Markku-Juhani's attack. (Actually it had never occurred
8690 to me that the half of 'md_local' used for chaining was the
8691 half from which PRNG output bytes were taken -- I had always
8692 assumed that the secret half would be used.) The second
8693 measure makes sure that additional data from 'state' is never
8694 mixed into 'md_local' in small portions; this heuristically
8695 further strengthens the PRNG.
8698 *) Fix crypto/bn/asm/mips3.s.
8701 *) When only the key is given to "enc", the IV is undefined. Print out
8702 an error message in this case.
8705 *) Handle special case when X509_NAME is empty in X509 printing routines.
8708 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
8709 positive and less than q.
8712 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
8713 used: it isn't thread safe and the add_lock_callback should handle
8715 [Paul Rose <Paul.Rose@bridge.com>]
8717 *) Verify that incoming data obeys the block size in
8718 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
8722 [Ulf Möller, Bodo Möller]
8724 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
8725 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
8726 when fixing the server behaviour for backwards-compatible 'client
8727 hello' messages. (Note that the attack is impractical against
8728 SSL 3.0 and TLS 1.0 anyway because length and version checking
8729 means that the probability of guessing a valid ciphertext is
8730 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
8733 Before 0.9.5, the countermeasure (hide the error by generating a
8734 random 'decryption result') did not work properly because
8735 ERR_clear_error() was missing, meaning that SSL_get_error() would
8736 detect the supposedly ignored error.
8738 Both problems are now fixed.
8741 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
8742 (previously it was 1024).
8745 *) Fix for compatibility mode trust settings: ignore trust settings
8746 unless some valid trust or reject settings are present.
8749 *) Fix for blowfish EVP: its a variable length cipher.
8752 *) Fix various bugs related to DSA S/MIME verification. Handle missing
8753 parameters in DSA public key structures and return an error in the
8754 DSA routines if parameters are absent.
8757 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
8758 in the current directory if neither $RANDFILE nor $HOME was set.
8759 RAND_file_name() in 0.9.6a returned NULL in this case. This has
8760 caused some confusion to Windows users who haven't defined $HOME.
8761 Thus RAND_file_name() is changed again: e_os.h can define a
8762 DEFAULT_HOME, which will be used if $HOME is not set.
8763 For Windows, we use "C:"; on other platforms, we still require
8764 environment variables.
8766 *) Move 'if (!initialized) RAND_poll()' into regions protected by
8767 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
8768 having multiple threads call RAND_poll() concurrently.
8771 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
8772 combination of a flag and a thread ID variable.
8773 Otherwise while one thread is in ssleay_rand_bytes (which sets the
8774 flag), *other* threads can enter ssleay_add_bytes without obeying
8775 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
8776 that they do not hold after the first thread unsets add_do_not_lock).
8779 *) Change bctest again: '-x' expressions are not available in all
8783 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
8785 *) Fix a couple of memory leaks in PKCS7_dataDecode()
8786 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
8788 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
8789 the default extension for executables, if any. Also, make the perl
8790 scripts that use symlink() to test if it really exists and use "cp"
8791 if it doesn't. All this made OpenSSL compilable and installable in
8795 *) Fix for asn1_GetSequence() for indefinite length constructed data.
8796 If SEQUENCE is length is indefinite just set c->slen to the total
8797 amount of data available.
8798 [Steve Henson, reported by shige@FreeBSD.org]
8799 [This change does not apply to 0.9.7.]
8801 *) Change bctest to avoid here-documents inside command substitution
8802 (workaround for FreeBSD /bin/sh bug).
8803 For compatibility with Ultrix, avoid shell functions (introduced
8804 in the bctest version that searches along $PATH).
8807 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
8808 with des_encrypt() defined on some operating systems, like Solaris
8812 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
8813 On the Importance of Eliminating Errors in Cryptographic
8814 Computations, J. Cryptology 14 (2001) 2, 101-119,
8815 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
8818 *) MIPS assembler BIGNUM division bug fix.
8821 *) Disabled incorrect Alpha assembler code.
8824 *) Fix PKCS#7 decode routines so they correctly update the length
8825 after reading an EOC for the EXPLICIT tag.
8827 [This change does not apply to 0.9.7.]
8829 *) Fix bug in PKCS#12 key generation routines. This was triggered
8830 if a 3DES key was generated with a 0 initial byte. Include
8831 PKCS12_BROKEN_KEYGEN compilation option to retain the old
8832 (but broken) behaviour.
8835 *) Enhance bctest to search for a working bc along $PATH and print
8837 [Tim Rice <tim@multitalents.net> via Richard Levitte]
8839 *) Fix memory leaks in err.c: free err_data string if necessary;
8840 don't write to the wrong index in ERR_set_error_data.
8843 *) Implement ssl23_peek (analogous to ssl23_read), which previously
8847 *) Replace rdtsc with _emit statements for VC++ version 5.
8848 [Jeremy Cooper <jeremy@baymoo.org>]
8850 *) Make it possible to reuse SSLv2 sessions.
8853 *) In copy_email() check for >= 0 as a return value for
8854 X509_NAME_get_index_by_NID() since 0 is a valid index.
8855 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
8857 *) Avoid coredump with unsupported or invalid public keys by checking if
8858 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
8859 PKCS7_verify() fails with non detached data.
8862 *) Don't use getenv in library functions when run as setuid/setgid.
8863 New function OPENSSL_issetugid().
8866 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
8867 due to incorrect handling of multi-threading:
8869 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
8871 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
8873 3. Count how many times MemCheck_off() has been called so that
8874 nested use can be treated correctly. This also avoids
8875 inband-signalling in the previous code (which relied on the
8876 assumption that thread ID 0 is impossible).
8879 *) Add "-rand" option also to s_client and s_server.
8882 *) Fix CPU detection on Irix 6.x.
8883 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
8884 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8886 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
8889 [This change does not apply to 0.9.7.]
8891 *) Use the cached encoding of an X509_NAME structure rather than
8892 copying it. This is apparently the reason for the libsafe "errors"
8893 but the code is actually correct.
8896 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
8897 Bleichenbacher's DSA attack.
8898 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
8899 to be set and top=0 forces the highest bit to be set; top=-1 is new
8900 and leaves the highest bit random.
8901 [Ulf Moeller, Bodo Moeller]
8903 *) In the NCONF_...-based implementations for CONF_... queries
8904 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
8905 a temporary CONF structure with the data component set to NULL
8906 (which gives segmentation faults in lh_retrieve).
8907 Instead, use NULL for the CONF pointer in CONF_get_string and
8908 CONF_get_number (which may use environment variables) and directly
8909 return NULL from CONF_get_section.
8912 *) Fix potential buffer overrun for EBCDIC.
8915 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
8916 keyUsage if basicConstraints absent for a CA.
8919 *) Make SMIME_write_PKCS7() write mail header values with a format that
8920 is more generally accepted (no spaces before the semicolon), since
8921 some programs can't parse those values properly otherwise. Also make
8922 sure BIO's that break lines after each write do not create invalid
8926 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
8927 macros previously used would not encode an empty SEQUENCE OF
8928 and break the signature.
8930 [This change does not apply to 0.9.7.]
8932 *) Zero the premaster secret after deriving the master secret in
8936 *) Add some EVP_add_digest_alias registrations (as found in
8937 OpenSSL_add_all_digests()) to SSL_library_init()
8938 aka OpenSSL_add_ssl_algorithms(). This provides improved
8939 compatibility with peers using X.509 certificates
8940 with unconventional AlgorithmIdentifier OIDs.
8943 *) Fix for Irix with NO_ASM.
8944 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
8946 *) ./config script fixes.
8947 [Ulf Moeller, Richard Levitte]
8949 *) Fix 'openssl passwd -1'.
8952 *) Change PKCS12_key_gen_asc() so it can cope with non null
8953 terminated strings whose length is passed in the passlen
8954 parameter, for example from PEM callbacks. This was done
8955 by adding an extra length parameter to asc2uni().
8956 [Steve Henson, reported by <oddissey@samsung.co.kr>]
8958 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
8959 call failed, free the DSA structure.
8962 *) Fix to uni2asc() to cope with zero length Unicode strings.
8963 These are present in some PKCS#12 files.
8966 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
8967 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
8968 when writing a 32767 byte record.
8969 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
8971 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
8972 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
8974 (RSA objects have a reference count access to which is protected
8975 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
8976 so they are meant to be shared between threads.)
8977 [Bodo Moeller, Geoff Thorpe; original patch submitted by
8978 "Reddie, Steven" <Steven.Reddie@ca.com>]
8980 *) Fix a deadlock in CRYPTO_mem_leaks().
8983 *) Use better test patterns in bntest.
8986 *) rand_win.c fix for Borland C.
8989 *) BN_rshift bugfix for n == 0.
8992 *) Add a 'bctest' script that checks for some known 'bc' bugs
8993 so that 'make test' does not abort just because 'bc' is broken.
8996 *) Store verify_result within SSL_SESSION also for client side to
8997 avoid potential security hole. (Re-used sessions on the client side
8998 always resulted in verify_result==X509_V_OK, not using the original
8999 result of the server certificate verification.)
9002 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
9003 SSL3_RT_APPLICATION_DATA, return 0.
9004 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
9008 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
9009 releases, have been re-implemented by renaming the previous
9010 implementations of ssl2_read and ssl3_read to ssl2_read_internal
9011 and ssl3_read_internal, respectively, and adding 'peek' parameters
9012 to them. The new ssl[23]_{read,peek} functions are calls to
9013 ssl[23]_read_internal with the 'peek' flag set appropriately.
9014 A 'peek' parameter has also been added to ssl3_read_bytes, which
9015 does the actual work for ssl3_read_internal.
9018 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
9019 the method-specific "init()" handler. Also clean up ex_data after
9020 calling the method-specific "finish()" handler. Previously, this was
9021 happening the other way round.
9024 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
9025 The previous value, 12, was not always sufficient for BN_mod_exp().
9028 *) Make sure that shared libraries get the internal name engine with
9029 the full version number and not just 0. This should mark the
9030 shared libraries as not backward compatible. Of course, this should
9031 be changed again when we can guarantee backward binary compatibility.
9034 *) Fix typo in get_cert_by_subject() in by_dir.c
9035 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
9037 *) Rework the system to generate shared libraries:
9039 - Make note of the expected extension for the shared libraries and
9040 if there is a need for symbolic links from for example libcrypto.so.0
9041 to libcrypto.so.0.9.7. There is extended info in Configure for
9044 - Make as few rebuilds of the shared libraries as possible.
9046 - Still avoid linking the OpenSSL programs with the shared libraries.
9048 - When installing, install the shared libraries separately from the
9052 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
9054 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
9055 and not in SSL_clear because the latter is also used by the
9056 accept/connect functions; previously, the settings made by
9057 SSL_set_read_ahead would be lost during the handshake.
9058 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
9060 *) Correct util/mkdef.pl to be selective about disabled algorithms.
9061 Previously, it would create entries for disabled algorithms no
9065 *) Added several new manual pages for SSL_* function.
9068 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
9070 *) In ssl23_get_client_hello, generate an error message when faced
9071 with an initial SSL 3.0/TLS record that is too small to contain the
9072 first two bytes of the ClientHello message, i.e. client_version.
9073 (Note that this is a pathologic case that probably has never happened
9074 in real life.) The previous approach was to use the version number
9075 from the record header as a substitute; but our protocol choice
9076 should not depend on that one because it is not authenticated
9077 by the Finished messages.
9080 *) More robust randomness gathering functions for Windows.
9081 [Jeffrey Altman <jaltman@columbia.edu>]
9083 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
9084 not set then we don't setup the error code for issuer check errors
9085 to avoid possibly overwriting other errors which the callback does
9086 handle. If an application does set the flag then we assume it knows
9087 what it is doing and can handle the new informational codes
9091 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
9092 a general "ANY" type, as such it should be able to decode anything
9093 including tagged types. However it didn't check the class so it would
9094 wrongly interpret tagged types in the same way as their universal
9095 counterpart and unknown types were just rejected. Changed so that the
9096 tagged and unknown types are handled in the same way as a SEQUENCE:
9097 that is the encoding is stored intact. There is also a new type
9098 "V_ASN1_OTHER" which is used when the class is not universal, in this
9099 case we have no idea what the actual type is so we just lump them all
9103 *) On VMS, stdout may very well lead to a file that is written to
9104 in a record-oriented fashion. That means that every write() will
9105 write a separate record, which will be read separately by the
9106 programs trying to read from it. This can be very confusing.
9108 The solution is to put a BIO filter in the way that will buffer
9109 text until a linefeed is reached, and then write everything a
9110 line at a time, so every record written will be an actual line,
9111 not chunks of lines and not (usually doesn't happen, but I've
9112 seen it once) several lines in one record. BIO_f_linebuffer() is
9115 Currently, it's a VMS-only method, because that's where it has
9116 been tested well enough.
9119 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
9120 it can return incorrect results.
9121 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
9122 but it was in 0.9.6-beta[12].)
9125 *) Disable the check for content being present when verifying detached
9126 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
9127 include zero length content when signing messages.
9130 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
9131 BIO_ctrl (for BIO pairs).
9134 *) Add DSO method for VMS.
9137 *) Bug fix: Montgomery multiplication could produce results with the
9141 *) Add RPM specification openssl.spec and modify it to build three
9142 packages. The default package contains applications, application
9143 documentation and run-time libraries. The devel package contains
9144 include files, static libraries and function documentation. The
9145 doc package contains the contents of the doc directory. The original
9146 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
9149 *) Add a large number of documentation files for many SSL routines.
9150 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
9152 *) Add a configuration entry for Sony News 4.
9153 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
9155 *) Don't set the two most significant bits to one when generating a
9156 random number < q in the DSA library.
9159 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
9160 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
9161 the underlying transport is blocking) if a handshake took place.
9162 (The default behaviour is needed by applications such as s_client
9163 and s_server that use select() to determine when to use SSL_read;
9164 but for applications that know in advance when to expect data, it
9165 just makes things more complicated.)
9168 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
9172 *) Add a few more EBCDIC conditionals that make `req' and `x509'
9173 work better on such systems.
9174 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
9176 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
9177 Update PKCS12_parse() so it copies the friendlyName and the
9178 keyid to the certificates aux info.
9181 *) Fix bug in PKCS7_verify() which caused an infinite loop
9182 if there was more than one signature.
9183 [Sven Uszpelkat <su@celocom.de>]
9185 *) Major change in util/mkdef.pl to include extra information
9186 about each symbol, as well as presenting variables as well
9187 as functions. This change means that there's n more need
9188 to rebuild the .num files when some algorithms are excluded.
9191 *) Allow the verify time to be set by an application,
9192 rather than always using the current time.
9195 *) Phase 2 verify code reorganisation. The certificate
9196 verify code now looks up an issuer certificate by a
9197 number of criteria: subject name, authority key id
9198 and key usage. It also verifies self signed certificates
9199 by the same criteria. The main comparison function is
9200 X509_check_issued() which performs these checks.
9202 Lot of changes were necessary in order to support this
9203 without completely rewriting the lookup code.
9205 Authority and subject key identifier are now cached.
9207 The LHASH 'certs' is X509_STORE has now been replaced
9208 by a STACK_OF(X509_OBJECT). This is mainly because an
9209 LHASH can't store or retrieve multiple objects with
9210 the same hash value.
9212 As a result various functions (which were all internal
9213 use only) have changed to handle the new X509_STORE
9214 structure. This will break anything that messed round
9215 with X509_STORE internally.
9217 The functions X509_STORE_add_cert() now checks for an
9218 exact match, rather than just subject name.
9220 The X509_STORE API doesn't directly support the retrieval
9221 of multiple certificates matching a given criteria, however
9222 this can be worked round by performing a lookup first
9223 (which will fill the cache with candidate certificates)
9224 and then examining the cache for matches. This is probably
9225 the best we can do without throwing out X509_LOOKUP
9226 entirely (maybe later...).
9228 The X509_VERIFY_CTX structure has been enhanced considerably.
9230 All certificate lookup operations now go via a get_issuer()
9231 callback. Although this currently uses an X509_STORE it
9232 can be replaced by custom lookups. This is a simple way
9233 to bypass the X509_STORE hackery necessary to make this
9234 work and makes it possible to use more efficient techniques
9235 in future. A very simple version which uses a simple
9236 STACK for its trusted certificate store is also provided
9237 using X509_STORE_CTX_trusted_stack().
9239 The verify_cb() and verify() callbacks now have equivalents
9240 in the X509_STORE_CTX structure.
9242 X509_STORE_CTX also has a 'flags' field which can be used
9243 to customise the verify behaviour.
9246 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
9247 excludes S/MIME capabilities.
9250 *) When a certificate request is read in keep a copy of the
9251 original encoding of the signed data and use it when outputting
9252 again. Signatures then use the original encoding rather than
9253 a decoded, encoded version which may cause problems if the
9254 request is improperly encoded.
9257 *) For consistency with other BIO_puts implementations, call
9258 buffer_write(b, ...) directly in buffer_puts instead of calling
9261 In BIO_puts, increment b->num_write as in BIO_write.
9262 [Peter.Sylvester@EdelWeb.fr]
9264 *) Fix BN_mul_word for the case where the word is 0. (We have to use
9265 BN_zero, we may not return a BIGNUM with an array consisting of
9269 *) Avoid calling abort() from within the library when problems are
9270 detected, except if preprocessor symbols have been defined
9271 (such as REF_CHECK, BN_DEBUG etc.).
9274 *) New openssl application 'rsautl'. This utility can be
9275 used for low level RSA operations. DER public key
9276 BIO/fp routines also added.
9279 *) New Configure entry and patches for compiling on QNX 4.
9280 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
9282 *) A demo state-machine implementation was sponsored by
9283 Nuron (http://www.nuron.com/) and is now available in
9284 demos/state_machine.
9287 *) New options added to the 'dgst' utility for signature
9288 generation and verification.
9291 *) Unrecognized PKCS#7 content types are now handled via a
9292 catch all ASN1_TYPE structure. This allows unsupported
9293 types to be stored as a "blob" and an application can
9294 encode and decode it manually.
9297 *) Fix various signed/unsigned issues to make a_strex.c
9299 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
9301 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
9302 length if passed a buffer. ASN1_INTEGER_to_BN failed
9303 if passed a NULL BN and its argument was negative.
9304 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
9306 *) Modification to PKCS#7 encoding routines to output definite
9307 length encoding. Since currently the whole structures are in
9308 memory there's not real point in using indefinite length
9309 constructed encoding. However if OpenSSL is compiled with
9310 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
9313 *) Added BIO_vprintf() and BIO_vsnprintf().
9316 *) Added more prefixes to parse for in the the strings written
9317 through a logging bio, to cover all the levels that are available
9318 through syslog. The prefixes are now:
9320 PANIC, EMERG, EMR => LOG_EMERG
9321 ALERT, ALR => LOG_ALERT
9322 CRIT, CRI => LOG_CRIT
9323 ERROR, ERR => LOG_ERR
9324 WARNING, WARN, WAR => LOG_WARNING
9325 NOTICE, NOTE, NOT => LOG_NOTICE
9326 INFO, INF => LOG_INFO
9327 DEBUG, DBG => LOG_DEBUG
9329 and as before, if none of those prefixes are present at the
9330 beginning of the string, LOG_ERR is chosen.
9332 On Win32, the LOG_* levels are mapped according to this:
9334 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
9335 LOG_WARNING => EVENTLOG_WARNING_TYPE
9336 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
9340 *) Made it possible to reconfigure with just the configuration
9341 argument "reconf" or "reconfigure". The command line arguments
9342 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
9343 and are retrieved from there when reconfiguring.
9347 [Assar Westerlund <assar@sics.se>, Richard Levitte]
9349 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
9352 *) The obj_dat.pl script was messing up the sorting of object
9353 names. The reason was that it compared the quoted version
9354 of strings as a result "OCSP" > "OCSP Signing" because
9355 " > SPACE. Changed script to store unquoted versions of
9356 names and add quotes on output. It was also omitting some
9357 names from the lookup table if they were given a default
9358 value (that is if SN is missing it is given the same
9359 value as LN and vice versa), these are now added on the
9360 grounds that if an object has a name we should be able to
9361 look it up. Finally added warning output when duplicate
9362 short or long names are found.
9365 *) Changes needed for Tandem NSK.
9366 [Scott Uroff <scott@xypro.com>]
9368 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
9369 RSA_padding_check_SSLv23(), special padding was never detected
9370 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
9371 version rollback attacks was not effective.
9373 In s23_clnt.c, don't use special rollback-attack detection padding
9374 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
9375 client; similarly, in s23_srvr.c, don't do the rollback check if
9376 SSL 2.0 is the only protocol enabled in the server.
9379 *) Make it possible to get hexdumps of unprintable data with 'openssl
9380 asn1parse'. By implication, the functions ASN1_parse_dump() and
9381 BIO_dump_indent() are added.
9384 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
9385 these print out strings and name structures based on various
9386 flags including RFC2253 support and proper handling of
9387 multibyte characters. Added options to the 'x509' utility
9388 to allow the various flags to be set.
9391 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
9392 Also change the functions X509_cmp_current_time() and
9393 X509_gmtime_adj() work with an ASN1_TIME structure,
9394 this will enable certificates using GeneralizedTime in validity
9395 dates to be checked.
9398 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
9399 negative public key encodings) on by default,
9400 NO_NEG_PUBKEY_BUG can be set to disable it.
9403 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
9404 content octets. An i2c_ASN1_OBJECT is unnecessary because
9405 the encoding can be trivially obtained from the structure.
9408 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
9409 not read locks (CRYPTO_r_[un]lock).
9412 *) A first attempt at creating official support for shared
9413 libraries through configuration. I've kept it so the
9414 default is static libraries only, and the OpenSSL programs
9415 are always statically linked for now, but there are
9416 preparations for dynamic linking in place.
9417 This has been tested on Linux and Tru64.
9420 *) Randomness polling function for Win9x, as described in:
9421 Peter Gutmann, Software Generation of Practically Strong
9425 *) Fix so PRNG is seeded in req if using an already existing
9429 *) New options to smime application. -inform and -outform
9430 allow alternative formats for the S/MIME message including
9431 PEM and DER. The -content option allows the content to be
9432 specified separately. This should allow things like Netscape
9433 form signing output easier to verify.
9436 *) Fix the ASN1 encoding of tags using the 'long form'.
9439 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
9440 STRING types. These convert content octets to and from the
9441 underlying type. The actual tag and length octets are
9442 already assumed to have been read in and checked. These
9443 are needed because all other string types have virtually
9444 identical handling apart from the tag. By having versions
9445 of the ASN1 functions that just operate on content octets
9446 IMPLICIT tagging can be handled properly. It also allows
9447 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
9448 and ASN1_INTEGER are identical apart from the tag.
9451 *) Change the handling of OID objects as follows:
9453 - New object identifiers are inserted in objects.txt, following
9454 the syntax given in objects.README.
9455 - objects.pl is used to process obj_mac.num and create a new
9457 - obj_dat.pl is used to create a new obj_dat.h, using the data in
9460 This is currently kind of a hack, and the perl code in objects.pl
9461 isn't very elegant, but it works as I intended. The simplest way
9462 to check that it worked correctly is to look in obj_dat.h and
9463 check the array nid_objs and make sure the objects haven't moved
9464 around (this is important!). Additions are OK, as well as
9465 consistent name changes.
9468 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
9471 *) Addition of the command line parameter '-rand file' to 'openssl req'.
9472 The given file adds to whatever has already been seeded into the
9473 random pool through the RANDFILE configuration file option or
9474 environment variable, or the default random state file.
9477 *) mkstack.pl now sorts each macro group into lexical order.
9478 Previously the output order depended on the order the files
9479 appeared in the directory, resulting in needless rewriting
9483 *) Patches to make OpenSSL compile under Win32 again. Mostly
9484 work arounds for the VC++ problem that it treats func() as
9485 func(void). Also stripped out the parts of mkdef.pl that
9486 added extra typesafe functions: these no longer exist.
9489 *) Reorganisation of the stack code. The macros are now all
9490 collected in safestack.h . Each macro is defined in terms of
9491 a "stack macro" of the form SKM_<name>(type, a, b). The
9492 DEBUG_SAFESTACK is now handled in terms of function casts,
9493 this has the advantage of retaining type safety without the
9494 use of additional functions. If DEBUG_SAFESTACK is not defined
9495 then the non typesafe macros are used instead. Also modified the
9496 mkstack.pl script to handle the new form. Needs testing to see
9497 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
9498 the default if no major problems. Similar behaviour for ASN1_SET_OF
9499 and PKCS12_STACK_OF.
9502 *) When some versions of IIS use the 'NET' form of private key the
9503 key derivation algorithm is different. Normally MD5(password) is
9504 used as a 128 bit RC4 key. In the modified case
9505 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some
9506 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
9507 as the old Netscape_RSA functions except they have an additional
9508 'sgckey' parameter which uses the modified algorithm. Also added
9509 an -sgckey command line option to the rsa utility. Thanks to
9510 Adrian Peck <bertie@ncipher.com> for posting details of the modified
9511 algorithm to openssl-dev.
9514 *) The evp_local.h macros were using 'c.##kname' which resulted in
9515 invalid expansion on some systems (SCO 5.0.5 for example).
9516 Corrected to 'c.kname'.
9517 [Phillip Porch <root@theporch.com>]
9519 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
9520 a STACK of email addresses from a certificate or request, these look
9521 in the subject name and the subject alternative name extensions and
9522 omit any duplicate addresses.
9525 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
9526 This makes DSA verification about 2 % faster.
9529 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
9530 (meaning that now 2^5 values will be precomputed, which is only 4 KB
9531 plus overhead for 1024 bit moduli).
9532 This makes exponentiations about 0.5 % faster for 1024 bit
9533 exponents (as measured by "openssl speed rsa2048").
9536 *) Rename memory handling macros to avoid conflicts with other
9538 Malloc => OPENSSL_malloc
9539 Malloc_locked => OPENSSL_malloc_locked
9540 Realloc => OPENSSL_realloc
9541 Free => OPENSSL_free
9544 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
9545 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
9548 *) CygWin32 support.
9549 [John Jarvie <jjarvie@newsguy.com>]
9551 *) The type-safe stack code has been rejigged. It is now only compiled
9552 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
9553 by default all type-specific stack functions are "#define"d back to
9554 standard stack functions. This results in more streamlined output
9555 but retains the type-safety checking possibilities of the original
9559 *) The STACK code has been cleaned up, and certain type declarations
9560 that didn't make a lot of sense have been brought in line. This has
9561 also involved a cleanup of sorts in safestack.h to more correctly
9562 map type-safe stack functions onto their plain stack counterparts.
9563 This work has also resulted in a variety of "const"ifications of
9564 lots of the code, especially "_cmp" operations which should normally
9565 be prototyped with "const" parameters anyway.
9568 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
9569 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
9570 (The PRNG state consists of two parts, the large pool 'state' and 'md',
9571 where all of 'md' is used each time the PRNG is used, but 'state'
9572 is used only indexed by a cyclic counter. As entropy may not be
9573 well distributed from the beginning, 'md' is important as a
9574 chaining variable. However, the output function chains only half
9575 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
9576 all of 'md', and seeding with STATE_SIZE dummy bytes will result
9577 in all of 'state' being rewritten, with the new values depending
9578 on virtually all of 'md'. This overcomes the 80 bit limitation.)
9581 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
9582 the handshake is continued after ssl_verify_cert_chain();
9583 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
9584 can lead to 'unexplainable' connection aborts later.
9585 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
9587 *) Major EVP API cipher revision.
9588 Add hooks for extra EVP features. This allows various cipher
9589 parameters to be set in the EVP interface. Support added for variable
9590 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
9591 setting of RC2 and RC5 parameters.
9593 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
9596 Remove lots of duplicated code from the EVP library. For example *every*
9597 cipher init() function handles the 'iv' in the same way according to the
9598 cipher mode. They also all do nothing if the 'key' parameter is NULL and
9599 for CFB and OFB modes they zero ctx->num.
9601 New functionality allows removal of S/MIME code RC2 hack.
9603 Most of the routines have the same form and so can be declared in terms
9606 By shifting this to the top level EVP_CipherInit() it can be removed from
9607 all individual ciphers. If the cipher wants to handle IVs or keys
9608 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
9611 Change lots of functions like EVP_EncryptUpdate() to now return a
9612 value: although software versions of the algorithms cannot fail
9613 any installed hardware versions can.
9616 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
9617 this option is set, tolerate broken clients that send the negotiated
9618 protocol version number instead of the requested protocol version
9622 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
9623 i.e. non-zero for export ciphersuites, zero otherwise.
9624 Previous versions had this flag inverted, inconsistent with
9625 rsa_tmp_cb (..._TMP_RSA_CB).
9626 [Bodo Moeller; problem reported by Amit Chopra]
9628 *) Add missing DSA library text string. Work around for some IIS
9629 key files with invalid SEQUENCE encoding.
9632 *) Add a document (doc/standards.txt) that list all kinds of standards
9633 and so on that are implemented in OpenSSL.
9636 *) Enhance c_rehash script. Old version would mishandle certificates
9637 with the same subject name hash and wouldn't handle CRLs at all.
9638 Added -fingerprint option to crl utility, to support new c_rehash
9642 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
9645 *) Fix for SSL server purpose checking. Server checking was
9646 rejecting certificates which had extended key usage present
9647 but no ssl client purpose.
9648 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
9650 *) Make PKCS#12 code work with no password. The PKCS#12 spec
9651 is a little unclear about how a blank password is handled.
9652 Since the password in encoded as a BMPString with terminating
9653 double NULL a zero length password would end up as just the
9654 double NULL. However no password at all is different and is
9655 handled differently in the PKCS#12 key generation code. NS
9656 treats a blank password as zero length. MSIE treats it as no
9657 password on export: but it will try both on import. We now do
9658 the same: PKCS12_parse() tries zero length and no password if
9659 the password is set to "" or NULL (NULL is now a valid password:
9660 it wasn't before) as does the pkcs12 application.
9663 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
9664 perror when PEM_read_bio_X509_REQ fails, the error message must
9665 be obtained from the error queue.
9668 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
9669 it in ERR_remove_state if appropriate, and change ERR_get_state
9670 accordingly to avoid race conditions (this is necessary because
9671 thread_hash is no longer constant once set).
9674 *) Bugfix for linux-elf makefile.one.
9677 *) RSA_get_default_method() will now cause a default
9678 RSA_METHOD to be chosen if one doesn't exist already.
9679 Previously this was only set during a call to RSA_new()
9680 or RSA_new_method(NULL) meaning it was possible for
9681 RSA_get_default_method() to return NULL.
9684 *) Added native name translation to the existing DSO code
9685 that will convert (if the flag to do so is set) filenames
9686 that are sufficiently small and have no path information
9687 into a canonical native form. Eg. "blah" converted to
9688 "libblah.so" or "blah.dll" etc.
9691 *) New function ERR_error_string_n(e, buf, len) which is like
9692 ERR_error_string(e, buf), but writes at most 'len' bytes
9693 including the 0 terminator. For ERR_error_string_n, 'buf'
9695 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
9697 *) CONF library reworked to become more general. A new CONF
9698 configuration file reader "class" is implemented as well as a
9699 new functions (NCONF_*, for "New CONF") to handle it. The now
9700 old CONF_* functions are still there, but are reimplemented to
9701 work in terms of the new functions. Also, a set of functions
9702 to handle the internal storage of the configuration data is
9703 provided to make it easier to write new configuration file
9704 reader "classes" (I can definitely see something reading a
9705 configuration file in XML format, for example), called _CONF_*,
9706 or "the configuration storage API"...
9708 The new configuration file reading functions are:
9710 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
9711 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
9713 NCONF_default, NCONF_WIN32
9715 NCONF_dump_fp, NCONF_dump_bio
9717 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
9718 NCONF_new creates a new CONF object. This works in the same way
9719 as other interfaces in OpenSSL, like the BIO interface.
9720 NCONF_dump_* dump the internal storage of the configuration file,
9721 which is useful for debugging. All other functions take the same
9722 arguments as the old CONF_* functions wth the exception of the
9723 first that must be a `CONF *' instead of a `LHASH *'.
9725 To make it easer to use the new classes with the old CONF_* functions,
9726 the function CONF_set_default_method is provided.
9729 *) Add '-tls1' option to 'openssl ciphers', which was already
9730 mentioned in the documentation but had not been implemented.
9731 (This option is not yet really useful because even the additional
9732 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
9735 *) Initial DSO code added into libcrypto for letting OpenSSL (and
9736 OpenSSL-based applications) load shared libraries and bind to
9737 them in a portable way.
9738 [Geoff Thorpe, with contributions from Richard Levitte]
9740 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
9742 *) Make sure _lrotl and _lrotr are only used with MSVC.
9744 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
9745 (the default implementation of RAND_status).
9747 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
9748 to '-clrext' (= clear extensions), as intended and documented.
9749 [Bodo Moeller; inconsistency pointed out by Michael Attili
9752 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
9753 was larger than the MD block size.
9754 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
9756 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
9757 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
9758 using the passed key: if the passed key was a private key the result
9759 of X509_print(), for example, would be to print out all the private key
9763 *) des_quad_cksum() byte order bug fix.
9764 [Ulf Möller, using the problem description in krb4-0.9.7, where
9765 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
9767 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
9769 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
9771 *) For easily testing in shell scripts whether some command
9772 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
9773 returns with exit code 0 iff no command of the given name is available.
9774 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
9775 the output goes to stdout and nothing is printed to stderr.
9776 Additional arguments are always ignored.
9778 Since for each cipher there is a command of the same name,
9779 the 'no-cipher' compilation switches can be tested this way.
9781 ('openssl no-XXX' is not able to detect pseudo-commands such
9782 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
9785 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
9788 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
9789 is set; it will be thrown away anyway because each handshake creates
9791 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
9792 to parameters -- in previous versions (since OpenSSL 0.9.3) the
9793 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning
9794 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
9797 *) New s_client option -ign_eof: EOF at stdin is ignored, and
9798 'Q' and 'R' lose their special meanings (quit/renegotiate).
9799 This is part of what -quiet does; unlike -quiet, -ign_eof
9800 does not suppress any output.
9803 *) Add compatibility options to the purpose and trust code. The
9804 purpose X509_PURPOSE_ANY is "any purpose" which automatically
9805 accepts a certificate or CA, this was the previous behaviour,
9806 with all the associated security issues.
9808 X509_TRUST_COMPAT is the old trust behaviour: only and
9809 automatically trust self signed roots in certificate store. A
9810 new trust setting X509_TRUST_DEFAULT is used to specify that
9811 a purpose has no associated trust setting and it should instead
9812 use the value in the default purpose.
9815 *) Fix the PKCS#8 DSA private key code so it decodes keys again
9816 and fix a memory leak.
9819 *) In util/mkerr.pl (which implements 'make errors'), preserve
9820 reason strings from the previous version of the .c file, as
9821 the default to have only downcase letters (and digits) in
9822 automatically generated reasons codes is not always appropriate.
9825 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
9826 using strerror. Previously, ERR_reason_error_string() returned
9827 library names as reason strings for SYSerr; but SYSerr is a special
9828 case where small numbers are errno values, not library numbers.
9831 *) Add '-dsaparam' option to 'openssl dhparam' application. This
9832 converts DSA parameters into DH parameters. (When creating parameters,
9833 DSA_generate_parameters is used.)
9836 *) Include 'length' (recommended exponent length) in C code generated
9837 by 'openssl dhparam -C'.
9840 *) The second argument to set_label in perlasm was already being used
9841 so couldn't be used as a "file scope" flag. Moved to third argument
9845 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
9846 instead of RAND_bytes for encryption IVs and salts.
9849 *) Include RAND_status() into RAND_METHOD instead of implementing
9850 it only for md_rand.c Otherwise replacing the PRNG by calling
9851 RAND_set_rand_method would be impossible.
9854 *) Don't let DSA_generate_key() enter an infinite loop if the random
9855 number generation fails.
9858 *) New 'rand' application for creating pseudo-random output.
9861 *) Added configuration support for Linux/IA64
9862 [Rolf Haberrecker <rolf@suse.de>]
9864 *) Assembler module support for Mingw32.
9867 *) Shared library support for HPUX (in shlib/).
9868 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
9870 *) Shared library support for Solaris gcc.
9871 [Lutz Behnke <behnke@trustcenter.de>]
9873 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
9875 *) PKCS7_encrypt() was adding text MIME headers twice because they
9876 were added manually and by SMIME_crlf_copy().
9879 *) In bntest.c don't call BN_rand with zero bits argument.
9880 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
9882 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
9883 case was implemented. This caused BN_div_recp() to fail occasionally.
9886 *) Add an optional second argument to the set_label() in the perl
9887 assembly language builder. If this argument exists and is set
9888 to 1 it signals that the assembler should use a symbol whose
9889 scope is the entire file, not just the current function. This
9890 is needed with MASM which uses the format label:: for this scope.
9891 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
9893 *) Change the ASN1 types so they are typedefs by default. Before
9894 almost all types were #define'd to ASN1_STRING which was causing
9895 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
9899 *) Change names of new functions to the new get1/get0 naming
9900 convention: After 'get1', the caller owns a reference count
9901 and has to call ..._free; 'get0' returns a pointer to some
9902 data structure without incrementing reference counters.
9903 (Some of the existing 'get' functions increment a reference
9904 counter, some don't.)
9905 Similarly, 'set1' and 'add1' functions increase reference
9906 counters or duplicate objects.
9909 *) Allow for the possibility of temp RSA key generation failure:
9910 the code used to assume it always worked and crashed on failure.
9913 *) Fix potential buffer overrun problem in BIO_printf().
9914 [Ulf Möller, using public domain code by Patrick Powell; problem
9915 pointed out by David Sacerdote <das33@cornell.edu>]
9917 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
9918 RAND_egd() and RAND_status(). In the command line application,
9919 the EGD socket can be specified like a seed file using RANDFILE
9923 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
9924 Some CAs (e.g. Verisign) distribute certificates in this form.
9927 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
9928 list to exclude them. This means that no special compilation option
9929 is needed to use anonymous DH: it just needs to be included in the
9933 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
9934 EVP_MD_type. The old functionality is available in a new macro called
9935 EVP_MD_md(). Change code that uses it and update docs.
9938 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
9939 where the 'void *' argument is replaced by a function pointer argument.
9940 Previously 'void *' was abused to point to functions, which works on
9941 many platforms, but is not correct. As these functions are usually
9942 called by macros defined in OpenSSL header files, most source code
9943 should work without changes.
9946 *) <openssl/opensslconf.h> (which is created by Configure) now contains
9947 sections with information on -D... compiler switches used for
9948 compiling the library so that applications can see them. To enable
9949 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
9950 must be defined. E.g.,
9951 #define OPENSSL_ALGORITHM_DEFINES
9952 #include <openssl/opensslconf.h>
9953 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
9954 [Richard Levitte, Ulf and Bodo Möller]
9956 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
9960 *) Change the 'other' type in certificate aux info to a STACK_OF
9961 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
9962 the required ASN1 format: arbitrary types determined by an OID.
9965 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
9966 argument to 'req'. This is not because the function is newer or
9967 better than others it just uses the work 'NEW' in the certificate
9968 request header lines. Some software needs this.
9971 *) Reorganise password command line arguments: now passwords can be
9972 obtained from various sources. Delete the PEM_cb function and make
9973 it the default behaviour: i.e. if the callback is NULL and the
9974 usrdata argument is not NULL interpret it as a null terminated pass
9975 phrase. If usrdata and the callback are NULL then the pass phrase
9976 is prompted for as usual.
9979 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
9980 the support is automatically enabled. The resulting binaries will
9981 autodetect the card and use it if present.
9982 [Ben Laurie and Compaq Inc.]
9984 *) Work around for Netscape hang bug. This sends certificate request
9985 and server done in one record. Since this is perfectly legal in the
9986 SSL/TLS protocol it isn't a "bug" option and is on by default. See
9987 the bugs/SSLv3 entry for more info.
9990 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
9993 *) Add -rand argument to smime and pkcs12 applications and read/write
9997 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
10000 *) Add command line password options to the remaining applications.
10003 *) Bug fix for BN_div_recp() for numerators with an even number of
10007 *) More tests in bntest.c, and changed test_bn output.
10010 *) ./config recognizes MacOS X now.
10013 *) Bug fix for BN_div() when the first words of num and divsor are
10014 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
10017 *) Add support for various broken PKCS#8 formats, and command line
10018 options to produce them.
10021 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
10022 get temporary BIGNUMs from a BN_CTX.
10025 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
10029 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
10030 include a #define from the old name to the new. The original intent
10031 was that statically linked binaries could for example just call
10032 SSLeay_add_all_ciphers() to just add ciphers to the table and not
10033 link with digests. This never worked because SSLeay_add_all_digests()
10034 and SSLeay_add_all_ciphers() were in the same source file so calling
10035 one would link with the other. They are now in separate source files.
10038 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
10041 *) Use a less unusual form of the Miller-Rabin primality test (it used
10042 a binary algorithm for exponentiation integrated into the Miller-Rabin
10043 loop, our standard modexp algorithms are faster).
10046 *) Support for the EBCDIC character set completed.
10047 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
10049 *) Source code cleanups: use const where appropriate, eliminate casts,
10050 use void * instead of char * in lhash.
10053 *) Bugfix: ssl3_send_server_key_exchange was not restartable
10054 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
10055 this the server could overwrite ephemeral keys that the client
10059 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
10060 using 50 iterations of the Rabin-Miller test.
10062 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
10063 iterations of the Rabin-Miller test as required by the appendix
10064 to FIPS PUB 186[-1]) instead of DSA_is_prime.
10065 As BN_is_prime_fasttest includes trial division, DSA parameter
10066 generation becomes much faster.
10068 This implies a change for the callback functions in DSA_is_prime
10069 and DSA_generate_parameters: The callback function is called once
10070 for each positive witness in the Rabin-Miller test, not just
10071 occasionally in the inner loop; and the parameters to the
10072 callback function now provide an iteration count for the outer
10073 loop rather than for the current invocation of the inner loop.
10074 DSA_generate_parameters additionally can call the callback
10075 function with an 'iteration count' of -1, meaning that a
10076 candidate has passed the trial division test (when q is generated
10077 from an application-provided seed, trial division is skipped).
10080 *) New function BN_is_prime_fasttest that optionally does trial
10081 division before starting the Rabin-Miller test and has
10082 an additional BN_CTX * argument (whereas BN_is_prime always
10083 has to allocate at least one BN_CTX).
10084 'callback(1, -1, cb_arg)' is called when a number has passed the
10085 trial division stage.
10088 *) Fix for bug in CRL encoding. The validity dates weren't being handled
10092 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
10095 *) New function BN_pseudo_rand().
10098 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
10099 bignum version of BN_from_montgomery() with the working code from
10100 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
10104 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
10105 made it impossible to use the same SSL_SESSION data structure in
10106 SSL2 clients in multiple threads.
10109 *) The return value of RAND_load_file() no longer counts bytes obtained
10110 by stat(). RAND_load_file(..., -1) is new and uses the complete file
10111 to seed the PRNG (previously an explicit byte count was required).
10112 [Ulf Möller, Bodo Möller]
10114 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
10115 used (char *) instead of (void *) and had casts all over the place.
10118 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
10121 *) Retain source code compatibility for BN_prime_checks macro:
10122 BN_is_prime(..., BN_prime_checks, ...) now uses
10123 BN_prime_checks_for_size to determine the appropriate number of
10124 Rabin-Miller iterations.
10127 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
10128 DH_CHECK_P_NOT_SAFE_PRIME.
10129 (Check if this is true? OpenPGP calls them "strong".)
10132 *) Merge the functionality of "dh" and "gendh" programs into a new program
10133 "dhparam". The old programs are retained for now but will handle DH keys
10134 (instead of parameters) in future.
10137 *) Make the ciphers, s_server and s_client programs check the return values
10138 when a new cipher list is set.
10141 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
10142 ciphers. Before when the 56bit ciphers were enabled the sorting was
10145 The syntax for the cipher sorting has been extended to support sorting by
10146 cipher-strength (using the strength_bits hard coded in the tables).
10147 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
10149 Fix a bug in the cipher-command parser: when supplying a cipher command
10150 string with an "undefined" symbol (neither command nor alphanumeric
10151 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
10152 an error is flagged.
10154 Due to the strength-sorting extension, the code of the
10155 ssl_create_cipher_list() function was completely rearranged. I hope that
10156 the readability was also increased :-)
10157 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
10159 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
10160 for the first serial number and places 2 in the serial number file. This
10161 avoids problems when the root CA is created with serial number zero and
10162 the first user certificate has the same issuer name and serial number
10166 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
10167 the new code. Add documentation for this stuff.
10170 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
10171 X509_*() to X509at_*() on the grounds that they don't handle X509
10172 structures and behave in an analogous way to the X509v3 functions:
10173 they shouldn't be called directly but wrapper functions should be used
10176 So we also now have some wrapper functions that call the X509at functions
10177 when passed certificate requests. (TO DO: similar things can be done with
10178 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
10179 things. Some of these need some d2i or i2d and print functionality
10180 because they handle more complex structures.)
10183 *) Add missing #ifndefs that caused missing symbols when building libssl
10184 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
10185 NO_RSA in ssl/s2*.c.
10186 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
10188 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
10189 has a return value which indicates the quality of the random data
10190 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
10191 error queue. New function RAND_pseudo_bytes() generates output that is
10192 guaranteed to be unique but not unpredictable. RAND_add is like
10193 RAND_seed, but takes an extra argument for an entropy estimate
10194 (RAND_seed always assumes full entropy).
10197 *) Do more iterations of Rabin-Miller probable prime test (specifically,
10198 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
10199 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
10200 in crypto/bn/bn_prime.c for the complete table). This guarantees a
10201 false-positive rate of at most 2^-80 for random input.
10204 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
10207 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
10208 in the 0.9.5 release), this returns the chain
10209 from an X509_CTX structure with a dup of the stack and all
10210 the X509 reference counts upped: so the stack will exist
10211 after X509_CTX_cleanup() has been called. Modify pkcs12.c
10214 Also make SSL_SESSION_print() print out the verify return
10218 *) Add manpage for the pkcs12 command. Also change the default
10219 behaviour so MAC iteration counts are used unless the new
10220 -nomaciter option is used. This improves file security and
10221 only older versions of MSIE (4.0 for example) need it.
10224 *) Honor the no-xxx Configure options when creating .DEF files.
10227 *) Add PKCS#10 attributes to field table: challengePassword,
10228 unstructuredName and unstructuredAddress. These are taken from
10229 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
10230 international characters are used.
10232 More changes to X509_ATTRIBUTE code: allow the setting of types
10233 based on strings. Remove the 'loc' parameter when adding
10234 attributes because these will be a SET OF encoding which is sorted
10238 *) Initial changes to the 'req' utility to allow request generation
10239 automation. This will allow an application to just generate a template
10240 file containing all the field values and have req construct the
10243 Initial support for X509_ATTRIBUTE handling. Stacks of these are
10244 used all over the place including certificate requests and PKCS#7
10245 structures. They are currently handled manually where necessary with
10246 some primitive wrappers for PKCS#7. The new functions behave in a
10247 manner analogous to the X509 extension functions: they allow
10248 attributes to be looked up by NID and added.
10250 Later something similar to the X509V3 code would be desirable to
10251 automatically handle the encoding, decoding and printing of the
10252 more complex types. The string types like challengePassword can
10253 be handled by the string table functions.
10255 Also modified the multi byte string table handling. Now there is
10256 a 'global mask' which masks out certain types. The table itself
10257 can use the flag STABLE_NO_MASK to ignore the mask setting: this
10258 is useful when for example there is only one permissible type
10259 (as in countryName) and using the mask might result in no valid
10263 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
10264 SSL_get_peer_finished to allow applications to obtain the latest
10265 Finished messages sent to the peer or expected from the peer,
10266 respectively. (SSL_get_peer_finished is usually the Finished message
10267 actually received from the peer, otherwise the protocol will be aborted.)
10269 As the Finished message are message digests of the complete handshake
10270 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
10271 be used for external authentication procedures when the authentication
10272 provided by SSL/TLS is not desired or is not enough.
10275 *) Enhanced support for Alpha Linux is added. Now ./config checks if
10276 the host supports BWX extension and if Compaq C is present on the
10277 $PATH. Just exploiting of the BWX extension results in 20-30%
10278 performance kick for some algorithms, e.g. DES and RC4 to mention
10279 a couple. Compaq C in turn generates ~20% faster code for MD5 and
10283 *) Add support for MS "fast SGC". This is arguably a violation of the
10284 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
10285 weak crypto and after checking the certificate is SGC a second one
10286 with strong crypto. MS SGC stops the first handshake after receiving
10287 the server certificate message and sends a second client hello. Since
10288 a server will typically do all the time consuming operations before
10289 expecting any further messages from the client (server key exchange
10290 is the most expensive) there is little difference between the two.
10292 To get OpenSSL to support MS SGC we have to permit a second client
10293 hello message after we have sent server done. In addition we have to
10294 reset the MAC if we do get this second client hello.
10297 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
10298 if a DER encoded private key is RSA or DSA traditional format. Changed
10299 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
10300 format DER encoded private key. Newer code should use PKCS#8 format which
10301 has the key type encoded in the ASN1 structure. Added DER private key
10302 support to pkcs8 application.
10305 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
10306 ciphersuites has been selected (as required by the SSL 3/TLS 1
10307 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
10308 is set, we interpret this as a request to violate the specification
10309 (the worst that can happen is a handshake failure, and 'correct'
10310 behaviour would result in a handshake failure anyway).
10313 *) In SSL_CTX_add_session, take into account that there might be multiple
10314 SSL_SESSION structures with the same session ID (e.g. when two threads
10315 concurrently obtain them from an external cache).
10316 The internal cache can handle only one SSL_SESSION with a given ID,
10317 so if there's a conflict, we now throw out the old one to achieve
10321 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
10322 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
10323 some routines that use cipher OIDs: some ciphers do not have OIDs
10324 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
10328 *) Simplify the trust setting structure and code. Now we just have
10329 two sequences of OIDs for trusted and rejected settings. These will
10330 typically have values the same as the extended key usage extension
10331 and any application specific purposes.
10333 The trust checking code now has a default behaviour: it will just
10334 check for an object with the same NID as the passed id. Functions can
10335 be provided to override either the default behaviour or the behaviour
10336 for a given id. SSL client, server and email already have functions
10337 in place for compatibility: they check the NID and also return "trusted"
10338 if the certificate is self signed.
10341 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
10342 traditional format into an EVP_PKEY structure.
10345 *) Add a password callback function PEM_cb() which either prompts for
10346 a password if usr_data is NULL or otherwise assumes it is a null
10347 terminated password. Allow passwords to be passed on command line
10348 environment or config files in a few more utilities.
10351 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
10352 keys. Add some short names for PKCS#8 PBE algorithms and allow them
10353 to be specified on the command line for the pkcs8 and pkcs12 utilities.
10354 Update documentation.
10357 *) Support for ASN1 "NULL" type. This could be handled before by using
10358 ASN1_TYPE but there wasn't any function that would try to read a NULL
10359 and produce an error if it couldn't. For compatibility we also have
10360 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
10361 don't allocate anything because they don't need to.
10364 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
10366 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
10368 *) Rebuild of the memory allocation routines used by OpenSSL code and
10369 possibly others as well. The purpose is to make an interface that
10370 provide hooks so anyone can build a separate set of allocation and
10371 deallocation routines to be used by OpenSSL, for example memory
10372 pool implementations, or something else, which was previously hard
10373 since Malloc(), Realloc() and Free() were defined as macros having
10374 the values malloc, realloc and free, respectively (except for Win32
10375 compilations). The same is provided for memory debugging code.
10376 OpenSSL already comes with functionality to find memory leaks, but
10377 this gives people a chance to debug other memory problems.
10379 With these changes, a new set of functions and macros have appeared:
10381 CRYPTO_set_mem_debug_functions() [F]
10382 CRYPTO_get_mem_debug_functions() [F]
10383 CRYPTO_dbg_set_options() [F]
10384 CRYPTO_dbg_get_options() [F]
10385 CRYPTO_malloc_debug_init() [M]
10387 The memory debug functions are NULL by default, unless the library
10388 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
10389 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
10390 gives the standard debugging functions that come with OpenSSL) or
10391 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
10392 provided by the library user) must be used. When the standard
10393 debugging functions are used, CRYPTO_dbg_set_options can be used to
10394 request additional information:
10395 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
10396 the CRYPTO_MDEBUG_xxx macro when compiling the library.
10398 Also, things like CRYPTO_set_mem_functions will always give the
10399 expected result (the new set of functions is used for allocation
10400 and deallocation) at all times, regardless of platform and compiler
10403 To finish it up, some functions that were never use in any other
10404 way than through macros have a new API and new semantic:
10406 CRYPTO_dbg_malloc()
10407 CRYPTO_dbg_realloc()
10410 All macros of value have retained their old syntax.
10411 [Richard Levitte and Bodo Moeller]
10413 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
10414 ordering of SMIMECapabilities wasn't in "strength order" and there
10415 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
10419 *) Some ASN1 types with illegal zero length encoding (INTEGER,
10420 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
10421 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
10423 *) Merge in my S/MIME library for OpenSSL. This provides a simple
10424 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
10425 functionality to handle multipart/signed properly) and a utility
10426 called 'smime' to call all this stuff. This is based on code I
10427 originally wrote for Celo who have kindly allowed it to be
10428 included in OpenSSL.
10431 *) Add variants des_set_key_checked and des_set_key_unchecked of
10432 des_set_key (aka des_key_sched). Global variable des_check_key
10433 decides which of these is called by des_set_key; this way
10434 des_check_key behaves as it always did, but applications and
10435 the library itself, which was buggy for des_check_key == 1,
10436 have a cleaner way to pick the version they need.
10439 *) New function PKCS12_newpass() which changes the password of a
10443 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
10444 dynamic mix. In both cases the ids can be used as an index into the
10445 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
10446 functions so they accept a list of the field values and the
10447 application doesn't need to directly manipulate the X509_TRUST
10451 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
10455 *) Modify the way the V3 extension code looks up extensions. This now
10456 works in a similar way to the object code: we have some "standard"
10457 extensions in a static table which is searched with OBJ_bsearch()
10458 and the application can add dynamic ones if needed. The file
10459 crypto/x509v3/ext_dat.h now has the info: this file needs to be
10460 updated whenever a new extension is added to the core code and kept
10461 in ext_nid order. There is a simple program 'tabtest.c' which checks
10462 this. New extensions are not added too often so this file can readily
10463 be maintained manually.
10465 There are two big advantages in doing things this way. The extensions
10466 can be looked up immediately and no longer need to be "added" using
10467 X509V3_add_standard_extensions(): this function now does nothing.
10468 [Side note: I get *lots* of email saying the extension code doesn't
10469 work because people forget to call this function]
10470 Also no dynamic allocation is done unless new extensions are added:
10471 so if we don't add custom extensions there is no need to call
10472 X509V3_EXT_cleanup().
10475 *) Modify enc utility's salting as follows: make salting the default. Add a
10476 magic header, so unsalted files fail gracefully instead of just decrypting
10477 to garbage. This is because not salting is a big security hole, so people
10478 should be discouraged from doing it.
10481 *) Fixes and enhancements to the 'x509' utility. It allowed a message
10482 digest to be passed on the command line but it only used this
10483 parameter when signing a certificate. Modified so all relevant
10484 operations are affected by the digest parameter including the
10485 -fingerprint and -x509toreq options. Also -x509toreq choked if a
10486 DSA key was used because it didn't fix the digest.
10489 *) Initial certificate chain verify code. Currently tests the untrusted
10490 certificates for consistency with the verify purpose (which is set
10491 when the X509_STORE_CTX structure is set up) and checks the pathlength.
10493 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
10494 this is because it will reject chains with invalid extensions whereas
10495 every previous version of OpenSSL and SSLeay made no checks at all.
10497 Trust code: checks the root CA for the relevant trust settings. Trust
10498 settings have an initial value consistent with the verify purpose: e.g.
10499 if the verify purpose is for SSL client use it expects the CA to be
10500 trusted for SSL client use. However the default value can be changed to
10501 permit custom trust settings: one example of this would be to only trust
10502 certificates from a specific "secure" set of CAs.
10504 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
10505 which should be used for version portability: especially since the
10506 verify structure is likely to change more often now.
10508 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
10509 to set them. If not set then assume SSL clients will verify SSL servers
10512 Two new options to the verify program: -untrusted allows a set of
10513 untrusted certificates to be passed in and -purpose which sets the
10514 intended purpose of the certificate. If a purpose is set then the
10515 new chain verify code is used to check extension consistency.
10518 *) Support for the authority information access extension.
10521 *) Modify RSA and DSA PEM read routines to transparently handle
10522 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
10523 public keys in a format compatible with certificate
10524 SubjectPublicKeyInfo structures. Unfortunately there were already
10525 functions called *_PublicKey_* which used various odd formats so
10526 these are retained for compatibility: however the DSA variants were
10527 never in a public release so they have been deleted. Changed dsa/rsa
10528 utilities to handle the new format: note no releases ever handled public
10529 keys so we should be OK.
10531 The primary motivation for this change is to avoid the same fiasco
10532 that dogs private keys: there are several incompatible private key
10533 formats some of which are standard and some OpenSSL specific and
10534 require various evil hacks to allow partial transparent handling and
10535 even then it doesn't work with DER formats. Given the option anything
10536 other than PKCS#8 should be dumped: but the other formats have to
10537 stay in the name of compatibility.
10539 With public keys and the benefit of hindsight one standard format
10540 is used which works with EVP_PKEY, RSA or DSA structures: though
10541 it clearly returns an error if you try to read the wrong kind of key.
10543 Added a -pubkey option to the 'x509' utility to output the public key.
10544 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
10545 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
10546 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
10547 that do the same as the EVP_PKEY_assign_*() except they up the
10548 reference count of the added key (they don't "swallow" the
10552 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
10553 CRLs would fail if the file contained no certificates or no CRLs:
10554 added a new function to read in both types and return the number
10555 read: this means that if none are read it will be an error. The
10556 DER versions of the certificate and CRL reader would always fail
10557 because it isn't possible to mix certificates and CRLs in DER format
10558 without choking one or the other routine. Changed this to just read
10559 a certificate: this is the best we can do. Also modified the code
10560 in apps/verify.c to take notice of return codes: it was previously
10561 attempting to read in certificates from NULL pointers and ignoring
10562 any errors: this is one reason why the cert and CRL reader seemed
10563 to work. It doesn't check return codes from the default certificate
10564 routines: these may well fail if the certificates aren't installed.
10567 *) Code to support otherName option in GeneralName.
10570 *) First update to verify code. Change the verify utility
10571 so it warns if it is passed a self signed certificate:
10572 for consistency with the normal behaviour. X509_verify
10573 has been modified to it will now verify a self signed
10574 certificate if *exactly* the same certificate appears
10575 in the store: it was previously impossible to trust a
10576 single self signed certificate. This means that:
10577 openssl verify ss.pem
10578 now gives a warning about a self signed certificate but
10579 openssl verify -CAfile ss.pem ss.pem
10583 *) For servers, store verify_result in SSL_SESSION data structure
10584 (and add it to external session representation).
10585 This is needed when client certificate verifications fails,
10586 but an application-provided verification callback (set by
10587 SSL_CTX_set_cert_verify_callback) allows accepting the session
10588 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
10589 but returns 1): When the session is reused, we have to set
10590 ssl->verify_result to the appropriate error code to avoid
10592 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
10594 *) Fix a bug in the new PKCS#7 code: it didn't consider the
10595 case in PKCS7_dataInit() where the signed PKCS7 structure
10596 didn't contain any existing data because it was being created.
10597 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
10599 *) Add a salt to the key derivation routines in enc.c. This
10600 forms the first 8 bytes of the encrypted file. Also add a
10601 -S option to allow a salt to be input on the command line.
10604 *) New function X509_cmp(). Oddly enough there wasn't a function
10605 to compare two certificates. We do this by working out the SHA1
10606 hash and comparing that. X509_cmp() will be needed by the trust
10610 *) SSL_get1_session() is like SSL_get_session(), but increments
10611 the reference count in the SSL_SESSION returned.
10612 [Geoff Thorpe <geoff@eu.c2.net>]
10614 *) Fix for 'req': it was adding a null to request attributes.
10615 Also change the X509_LOOKUP and X509_INFO code to handle
10616 certificate auxiliary information.
10619 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
10623 *) Add the possibility to add extra information to the memory leak
10624 detecting output, to form tracebacks, showing from where each
10625 allocation was originated: CRYPTO_push_info("constant string") adds
10626 the string plus current file name and line number to a per-thread
10627 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
10628 is like calling CYRPTO_pop_info() until the stack is empty.
10629 Also updated memory leak detection code to be multi-thread-safe.
10632 *) Add options -text and -noout to pkcs7 utility and delete the
10633 encryption options which never did anything. Update docs.
10636 *) Add options to some of the utilities to allow the pass phrase
10637 to be included on either the command line (not recommended on
10638 OSes like Unix) or read from the environment. Update the
10639 manpages and fix a few bugs.
10642 *) Add a few manpages for some of the openssl commands.
10645 *) Fix the -revoke option in ca. It was freeing up memory twice,
10646 leaking and not finding already revoked certificates.
10649 *) Extensive changes to support certificate auxiliary information.
10650 This involves the use of X509_CERT_AUX structure and X509_AUX
10651 functions. An X509_AUX function such as PEM_read_X509_AUX()
10652 can still read in a certificate file in the usual way but it
10653 will also read in any additional "auxiliary information". By
10654 doing things this way a fair degree of compatibility can be
10655 retained: existing certificates can have this information added
10656 using the new 'x509' options.
10658 Current auxiliary information includes an "alias" and some trust
10659 settings. The trust settings will ultimately be used in enhanced
10660 certificate chain verification routines: currently a certificate
10661 can only be trusted if it is self signed and then it is trusted
10665 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
10666 The problem was that one of the replacement routines had not been working
10667 since SSLeay releases. For now the offending routine has been replaced
10668 with non-optimised assembler. Even so, this now gives around 95%
10669 performance improvement for 1024 bit RSA signs.
10672 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
10673 handling. Most clients have the effective key size in bits equal to
10674 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
10675 A few however don't do this and instead use the size of the decrypted key
10676 to determine the RC2 key length and the AlgorithmIdentifier to determine
10677 the effective key length. In this case the effective key length can still
10678 be 40 bits but the key length can be 168 bits for example. This is fixed
10679 by manually forcing an RC2 key into the EVP_PKEY structure because the
10680 EVP code can't currently handle unusual RC2 key sizes: it always assumes
10681 the key length and effective key length are equal.
10684 *) Add a bunch of functions that should simplify the creation of
10685 X509_NAME structures. Now you should be able to do:
10686 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
10687 and have it automatically work out the correct field type and fill in
10688 the structures. The more adventurous can try:
10689 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
10690 and it will (hopefully) work out the correct multibyte encoding.
10693 *) Change the 'req' utility to use the new field handling and multibyte
10694 copy routines. Before the DN field creation was handled in an ad hoc
10695 way in req, ca, and x509 which was rather broken and didn't support
10696 BMPStrings or UTF8Strings. Since some software doesn't implement
10697 BMPStrings or UTF8Strings yet, they can be enabled using the config file
10698 using the dirstring_type option. See the new comment in the default
10699 openssl.cnf for more info.
10702 *) Make crypto/rand/md_rand.c more robust:
10703 - Assure unique random numbers after fork().
10704 - Make sure that concurrent threads access the global counter and
10705 md serializably so that we never lose entropy in them
10706 or use exactly the same state in multiple threads.
10707 Access to the large state is not always serializable because
10708 the additional locking could be a performance killer, and
10709 md should be large enough anyway.
10712 *) New file apps/app_rand.c with commonly needed functionality
10713 for handling the random seed file.
10715 Use the random seed file in some applications that previously did not:
10717 dsaparam -genkey (which also ignored its '-rand' option),
10720 x509 (when signing).
10721 Except on systems with /dev/urandom, it is crucial to have a random
10722 seed file at least for key creation, DSA signing, and for DH exchanges;
10723 for RSA signatures we could do without one.
10725 gendh and gendsa (unlike genrsa) used to read only the first byte
10726 of each file listed in the '-rand' option. The function as previously
10727 found in genrsa is now in app_rand.c and is used by all programs
10728 that support '-rand'.
10731 *) In RAND_write_file, use mode 0600 for creating files;
10732 don't just chmod when it may be too late.
10735 *) Report an error from X509_STORE_load_locations
10736 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
10739 *) New function ASN1_mbstring_copy() this copies a string in either
10740 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
10741 into an ASN1_STRING type. A mask of permissible types is passed
10742 and it chooses the "minimal" type to use or an error if not type
10746 *) Add function equivalents to the various macros in asn1.h. The old
10747 macros are retained with an M_ prefix. Code inside the library can
10748 use the M_ macros. External code (including the openssl utility)
10749 should *NOT* in order to be "shared library friendly".
10752 *) Add various functions that can check a certificate's extensions
10753 to see if it usable for various purposes such as SSL client,
10754 server or S/MIME and CAs of these types. This is currently
10755 VERY EXPERIMENTAL but will ultimately be used for certificate chain
10756 verification. Also added a -purpose flag to x509 utility to
10757 print out all the purposes.
10760 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
10764 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
10765 for, obtain and decode and extension and obtain its critical flag.
10766 This allows all the necessary extension code to be handled in a
10767 single function call.
10770 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
10771 platforms. See crypto/rc4/rc4_enc.c for further details.
10774 *) New -noout option to asn1parse. This causes no output to be produced
10775 its main use is when combined with -strparse and -out to extract data
10776 from a file (which may not be in ASN.1 format).
10779 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
10780 when producing the local key id.
10781 [Richard Levitte <levitte@stacken.kth.se>]
10783 *) New option -dhparam in s_server. This allows a DH parameter file to be
10784 stated explicitly. If it is not stated then it tries the first server
10785 certificate file. The previous behaviour hard coded the filename
10789 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
10790 a public key to be input or output. For example:
10791 openssl rsa -in key.pem -pubout -out pubkey.pem
10792 Also added necessary DSA public key functions to handle this.
10795 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
10796 in the message. This was handled by allowing
10797 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
10798 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
10800 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
10801 to the end of the strings whereas this didn't. This would cause problems
10802 if strings read with d2i_ASN1_bytes() were later modified.
10803 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
10805 *) Fix for base64 decode bug. When a base64 bio reads only one line of
10806 data and it contains EOF it will end up returning an error. This is
10807 caused by input 46 bytes long. The cause is due to the way base64
10808 BIOs find the start of base64 encoded data. They do this by trying a
10809 trial decode on each line until they find one that works. When they
10810 do a flag is set and it starts again knowing it can pass all the
10811 data directly through the decoder. Unfortunately it doesn't reset
10812 the context it uses. This means that if EOF is reached an attempt
10813 is made to pass two EOFs through the context and this causes the
10814 resulting error. This can also cause other problems as well. As is
10815 usual with these problems it takes *ages* to find and the fix is
10816 trivial: move one line.
10817 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
10819 *) Ugly workaround to get s_client and s_server working under Windows. The
10820 old code wouldn't work because it needed to select() on sockets and the
10821 tty (for keypresses and to see if data could be written). Win32 only
10822 supports select() on sockets so we select() with a 1s timeout on the
10823 sockets and then see if any characters are waiting to be read, if none
10824 are present then we retry, we also assume we can always write data to
10825 the tty. This isn't nice because the code then blocks until we've
10826 received a complete line of data and it is effectively polling the
10827 keyboard at 1s intervals: however it's quite a bit better than not
10828 working at all :-) A dedicated Windows application might handle this
10829 with an event loop for example.
10832 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
10833 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
10834 will be called when RSA_sign() and RSA_verify() are used. This is useful
10835 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
10836 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
10837 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
10838 This necessitated the support of an extra signature type NID_md5_sha1
10839 for SSL signatures and modifications to the SSL library to use it instead
10840 of calling RSA_public_decrypt() and RSA_private_encrypt().
10843 *) Add new -verify -CAfile and -CApath options to the crl program, these
10844 will lookup a CRL issuers certificate and verify the signature in a
10845 similar way to the verify program. Tidy up the crl program so it
10846 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
10847 less strict. It will now permit CRL extensions even if it is not
10848 a V2 CRL: this will allow it to tolerate some broken CRLs.
10851 *) Initialize all non-automatic variables each time one of the openssl
10852 sub-programs is started (this is necessary as they may be started
10853 multiple times from the "OpenSSL>" prompt).
10854 [Lennart Bang, Bodo Moeller]
10856 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
10857 removing all other RSA functionality (this is what NO_RSA does). This
10858 is so (for example) those in the US can disable those operations covered
10859 by the RSA patent while allowing storage and parsing of RSA keys and RSA
10863 *) Non-copying interface to BIO pairs.
10864 (still largely untested)
10867 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
10868 ASCII string. This was handled independently in various places before.
10871 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
10872 UTF8 strings a character at a time.
10875 *) Use client_version from client hello to select the protocol
10876 (s23_srvr.c) and for RSA client key exchange verification
10877 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
10880 *) Add various utility functions to handle SPKACs, these were previously
10881 handled by poking round in the structure internals. Added new function
10882 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
10883 print, verify and generate SPKACs. Based on an original idea from
10884 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
10887 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
10890 *) Allow the config file extension section to be overwritten on the
10891 command line. Based on an original idea from Massimiliano Pala
10892 <madwolf@comune.modena.it>. The new option is called -extensions
10893 and can be applied to ca, req and x509. Also -reqexts to override
10894 the request extensions in req and -crlexts to override the crl extensions
10898 *) Add new feature to the SPKAC handling in ca. Now you can include
10899 the same field multiple times by preceding it by "XXXX." for example:
10902 this is the same syntax as used in the req config file.
10905 *) Allow certificate extensions to be added to certificate requests. These
10906 are specified in a 'req_extensions' option of the req section of the
10907 config file. They can be printed out with the -text option to req but
10908 are otherwise ignored at present.
10911 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
10912 data read consists of only the final block it would not decrypted because
10913 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
10914 A misplaced 'break' also meant the decrypted final block might not be
10915 copied until the next read.
10918 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
10919 a few extra parameters to the DH structure: these will be useful if
10920 for example we want the value of 'q' or implement X9.42 DH.
10923 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
10924 provides hooks that allow the default DSA functions or functions on a
10925 "per key" basis to be replaced. This allows hardware acceleration and
10926 hardware key storage to be handled without major modification to the
10927 library. Also added low level modexp hooks and CRYPTO_EX structure and
10928 associated functions.
10931 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
10932 as "read only": it can't be written to and the buffer it points to will
10933 not be freed. Reading from a read only BIO is much more efficient than
10934 a normal memory BIO. This was added because there are several times when
10935 an area of memory needs to be read from a BIO. The previous method was
10936 to create a memory BIO and write the data to it, this results in two
10937 copies of the data and an O(n^2) reading algorithm. There is a new
10938 function BIO_new_mem_buf() which creates a read only memory BIO from
10939 an area of memory. Also modified the PKCS#7 routines to use read only
10943 *) Bugfix: ssl23_get_client_hello did not work properly when called in
10944 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
10945 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
10946 but a retry condition occurred while trying to read the rest.
10949 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
10950 NID_pkcs7_encrypted by default: this was wrong since this should almost
10951 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
10952 the encrypted data type: this is a more sensible place to put it and it
10953 allows the PKCS#12 code to be tidied up that duplicated this
10957 *) Changed obj_dat.pl script so it takes its input and output files on
10958 the command line. This should avoid shell escape redirection problems
10962 *) Initial support for certificate extension requests, these are included
10963 in things like Xenroll certificate requests. Included functions to allow
10964 extensions to be obtained and added.
10967 *) -crlf option to s_client and s_server for sending newlines as
10968 CRLF (as required by many protocols).
10971 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
10973 *) Install libRSAglue.a when OpenSSL is built with RSAref.
10974 [Ralf S. Engelschall]
10976 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
10977 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
10979 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
10983 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
10984 DH parameters/keys (q is lost during that conversion, but the resulting
10985 DH parameters contain its length).
10987 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
10988 much faster than DH_generate_parameters (which creates parameters
10989 where p = 2*q + 1), and also the smaller q makes DH computations
10990 much more efficient (160-bit exponentiation instead of 1024-bit
10991 exponentiation); so this provides a convenient way to support DHE
10992 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
10993 utter importance to use
10994 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10996 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
10997 when such DH parameters are used, because otherwise small subgroup
10998 attacks may become possible!
11001 *) Avoid memory leak in i2d_DHparams.
11004 *) Allow the -k option to be used more than once in the enc program:
11005 this allows the same encrypted message to be read by multiple recipients.
11008 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
11009 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
11010 it will always use the numerical form of the OID, even if it has a short
11014 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
11015 method only got called if p,q,dmp1,dmq1,iqmp components were present,
11016 otherwise bn_mod_exp was called. In the case of hardware keys for example
11017 no private key components need be present and it might store extra data
11018 in the RSA structure, which cannot be accessed from bn_mod_exp.
11019 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
11020 private key operations.
11023 *) Added support for SPARC Linux.
11026 *) pem_password_cb function type incompatibly changed from
11027 typedef int pem_password_cb(char *buf, int size, int rwflag);
11029 ....(char *buf, int size, int rwflag, void *userdata);
11030 so that applications can pass data to their callbacks:
11031 The PEM[_ASN1]_{read,write}... functions and macros now take an
11032 additional void * argument, which is just handed through whenever
11033 the password callback is called.
11034 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
11036 New function SSL_CTX_set_default_passwd_cb_userdata.
11038 Compatibility note: As many C implementations push function arguments
11039 onto the stack in reverse order, the new library version is likely to
11040 interoperate with programs that have been compiled with the old
11041 pem_password_cb definition (PEM_whatever takes some data that
11042 happens to be on the stack as its last argument, and the callback
11043 just ignores this garbage); but there is no guarantee whatsoever that
11046 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
11047 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
11048 problems not only on Windows, but also on some Unix platforms.
11049 To avoid problematic command lines, these definitions are now in an
11050 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
11051 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
11054 *) MIPS III/IV assembler module is reimplemented.
11057 *) More DES library cleanups: remove references to srand/rand and
11058 delete an unused file.
11061 *) Add support for the the free Netwide assembler (NASM) under Win32,
11062 since not many people have MASM (ml) and it can be hard to obtain.
11063 This is currently experimental but it seems to work OK and pass all
11064 the tests. Check out INSTALL.W32 for info.
11067 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
11068 without temporary keys kept an extra copy of the server key,
11069 and connections with temporary keys did not free everything in case
11073 *) New function RSA_check_key and new openssl rsa option -check
11074 for verifying the consistency of RSA keys.
11075 [Ulf Moeller, Bodo Moeller]
11077 *) Various changes to make Win32 compile work:
11078 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
11079 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
11080 comparison" warnings.
11081 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
11084 *) Add a debugging option to PKCS#5 v2 key generation function: when
11085 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
11086 derived keys are printed to stderr.
11089 *) Copy the flags in ASN1_STRING_dup().
11090 [Roman E. Pavlov <pre@mo.msk.ru>]
11092 *) The x509 application mishandled signing requests containing DSA
11093 keys when the signing key was also DSA and the parameters didn't match.
11095 It was supposed to omit the parameters when they matched the signing key:
11096 the verifying software was then supposed to automatically use the CA's
11097 parameters if they were absent from the end user certificate.
11099 Omitting parameters is no longer recommended. The test was also
11100 the wrong way round! This was probably due to unusual behaviour in
11101 EVP_cmp_parameters() which returns 1 if the parameters match.
11102 This meant that parameters were omitted when they *didn't* match and
11103 the certificate was useless. Certificates signed with 'ca' didn't have
11105 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
11107 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
11108 The interface is as follows:
11109 Applications can use
11110 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
11111 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
11112 "off" is now the default.
11113 The library internally uses
11114 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
11115 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
11116 to disable memory-checking temporarily.
11118 Some inconsistent states that previously were possible (and were
11119 even the default) are now avoided.
11121 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
11122 with each memory chunk allocated; this is occasionally more helpful
11123 than just having a counter.
11125 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
11127 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
11131 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
11132 which largely parallels "options", but is for changing API behaviour,
11133 whereas "options" are about protocol behaviour.
11134 Initial "mode" flags are:
11136 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
11137 a single record has been written.
11138 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
11139 retries use the same buffer location.
11140 (But all of the contents must be
11144 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
11147 *) Fix problems with no-hmac etc.
11148 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
11150 *) New functions RSA_get_default_method(), RSA_set_method() and
11151 RSA_get_method(). These allows replacement of RSA_METHODs without having
11152 to mess around with the internals of an RSA structure.
11155 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
11156 Also really enable memory leak checks in openssl.c and in some
11158 [Chad C. Mulligan, Bodo Moeller]
11160 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
11161 up the length of negative integers. This has now been simplified to just
11162 store the length when it is first determined and use it later, rather
11163 than trying to keep track of where data is copied and updating it to
11165 [Steve Henson, reported by Brien Wheeler
11166 <bwheeler@authentica-security.com>]
11168 *) Add a new function PKCS7_signatureVerify. This allows the verification
11169 of a PKCS#7 signature but with the signing certificate passed to the
11170 function itself. This contrasts with PKCS7_dataVerify which assumes the
11171 certificate is present in the PKCS#7 structure. This isn't always the
11172 case: certificates can be omitted from a PKCS#7 structure and be
11173 distributed by "out of band" means (such as a certificate database).
11176 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
11177 function prototypes in pem.h, also change util/mkdef.pl to add the
11178 necessary function names.
11181 *) mk1mf.pl (used by Windows builds) did not properly read the
11182 options set by Configure in the top level Makefile, and Configure
11183 was not even able to write more than one option correctly.
11184 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
11187 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
11188 file to be loaded from a BIO or FILE pointer. The BIO version will
11189 for example allow memory BIOs to contain config info.
11192 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
11193 Whoever hopes to achieve shared-library compatibility across versions
11194 must use this, not the compile-time macro.
11195 (Exercise 0.9.4: Which is the minimum library version required by
11197 Note: All this applies only to multi-threaded programs, others don't
11201 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
11202 through a BIO pair triggered the default case, i.e.
11203 SSLerr(...,SSL_R_UNKNOWN_STATE).
11206 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
11207 can use the SSL library even if none of the specific BIOs is
11211 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
11212 for the encoded length.
11213 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
11215 *) Add initial documentation of the X509V3 functions.
11218 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
11219 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
11220 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
11221 secure PKCS#8 private key format with a high iteration count.
11224 *) Fix determination of Perl interpreter: A perl or perl5
11225 _directory_ in $PATH was also accepted as the interpreter.
11226 [Ralf S. Engelschall]
11228 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
11229 wrong with it but it was very old and did things like calling
11230 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
11231 unusual formatting.
11234 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
11235 to use the new extension code.
11238 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
11239 with macros. This should make it easier to change their form, add extra
11240 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
11244 *) Add to configuration table a new entry that can specify an alternative
11245 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
11246 according to Mark Crispin <MRC@Panda.COM>.
11250 *) DES CBC did not update the IV. Weird.
11253 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
11254 Changing the behaviour of the former might break existing programs --
11255 where IV updating is needed, des_ncbc_encrypt can be used.
11258 *) When bntest is run from "make test" it drives bc to check its
11259 calculations, as well as internally checking them. If an internal check
11260 fails, it needs to cause bc to give a non-zero result or make test carries
11261 on without noticing the failure. Fixed.
11264 *) DES library cleanups.
11267 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
11268 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
11269 ciphers. NOTE: although the key derivation function has been verified
11270 against some published test vectors it has not been extensively tested
11271 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
11275 *) Instead of "mkdir -p", which is not fully portable, use new
11276 Perl script "util/mkdir-p.pl".
11279 *) Rewrite the way password based encryption (PBE) is handled. It used to
11280 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
11281 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
11282 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
11283 the 'parameter' field of the AlgorithmIdentifier is passed to the
11284 underlying key generation function so it must do its own ASN1 parsing.
11285 This has also changed the EVP_PBE_CipherInit() function which now has a
11286 'parameter' argument instead of literal salt and iteration count values
11287 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
11290 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
11291 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
11292 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
11293 KEY" because this clashed with PKCS#8 unencrypted string. Since this
11294 value was just used as a "magic string" and not used directly its
11295 value doesn't matter.
11298 *) Introduce some semblance of const correctness to BN. Shame C doesn't
11302 *) "linux-sparc64" configuration (ultrapenguin).
11303 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
11304 "linux-sparc" configuration.
11305 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
11307 *) config now generates no-xxx options for missing ciphers.
11310 *) Support the EBCDIC character set (work in progress).
11311 File ebcdic.c not yet included because it has a different license.
11312 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11314 *) Support BS2000/OSD-POSIX.
11315 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
11317 *) Make callbacks for key generation use void * instead of char *.
11320 *) Make S/MIME samples compile (not yet tested).
11323 *) Additional typesafe stacks.
11326 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
11330 Changes between 0.9.3 and 0.9.3a [29 May 1999]
11332 *) New configuration variant "sco5-gcc".
11334 *) Updated some demos.
11335 [Sean O Riordain, Wade Scholine]
11337 *) Add missing BIO_free at exit of pkcs12 application.
11340 *) Fix memory leak in conf.c.
11343 *) Updates for Win32 to assembler version of MD5.
11346 *) Set #! path to perl in apps/der_chop to where we found it
11347 instead of using a fixed path.
11350 *) SHA library changes for irix64-mips4-cc.
11353 *) Improvements for VMS support.
11357 Changes between 0.9.2b and 0.9.3 [24 May 1999]
11359 *) Bignum library bug fix. IRIX 6 passes "make test" now!
11360 This also avoids the problems with SC4.2 and unpatched SC5.
11361 [Andy Polyakov <appro@fy.chalmers.se>]
11363 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
11364 These are required because of the typesafe stack would otherwise break
11365 existing code. If old code used a structure member which used to be STACK
11366 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
11367 sk_num or sk_value it would produce an error because the num, data members
11368 are not present in STACK_OF. Now it just produces a warning. sk_set
11369 replaces the old method of assigning a value to sk_value
11370 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
11371 that does this will no longer work (and should use sk_set instead) but
11372 this could be regarded as a "questionable" behaviour anyway.
11375 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
11376 correctly handle encrypted S/MIME data.
11379 *) Change type of various DES function arguments from des_cblock
11380 (which means, in function argument declarations, pointer to char)
11381 to des_cblock * (meaning pointer to array with 8 char elements),
11382 which allows the compiler to do more typechecking; it was like
11383 that back in SSLeay, but with lots of ugly casts.
11385 Introduce new type const_des_cblock.
11388 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
11389 problems: find RecipientInfo structure that matches recipient certificate
11390 and initialise the ASN1 structures properly based on passed cipher.
11393 *) Belatedly make the BN tests actually check the results.
11396 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
11397 to and from BNs: it was completely broken. New compilation option
11398 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
11399 key elements as negative integers.
11402 *) Reorganize and speed up MD5.
11403 [Andy Polyakov <appro@fy.chalmers.se>]
11406 [Richard Levitte <richard@levitte.org>]
11408 *) New option -out to asn1parse to allow the parsed structure to be
11409 output to a file. This is most useful when combined with the -strparse
11410 option to examine the output of things like OCTET STRINGS.
11413 *) Make SSL library a little more fool-proof by not requiring any longer
11414 that SSL_set_{accept,connect}_state be called before
11415 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
11416 in many applications because usually everything *appeared* to work as
11417 intended anyway -- now it really works as intended).
11420 *) Move openssl.cnf out of lib/.
11423 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
11424 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
11425 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
11426 [Ralf S. Engelschall]
11428 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
11429 handle PKCS#7 enveloped data properly.
11430 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
11432 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
11433 copying pointers. The cert_st handling is changed by this in
11434 various ways (and thus what used to be known as ctx->default_cert
11435 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
11436 any longer when s->cert does not give us what we need).
11437 ssl_cert_instantiate becomes obsolete by this change.
11438 As soon as we've got the new code right (possibly it already is?),
11439 we have solved a couple of bugs of the earlier code where s->cert
11440 was used as if it could not have been shared with other SSL structures.
11442 Note that using the SSL API in certain dirty ways now will result
11443 in different behaviour than observed with earlier library versions:
11444 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
11445 does not influence s as it used to.
11447 In order to clean up things more thoroughly, inside SSL_SESSION
11448 we don't use CERT any longer, but a new structure SESS_CERT
11449 that holds per-session data (if available); currently, this is
11450 the peer's certificate chain and, for clients, the server's certificate
11451 and temporary key. CERT holds only those values that can have
11452 meaningful defaults in an SSL_CTX.
11455 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
11456 from the internal representation. Various PKCS#7 fixes: remove some
11457 evil casts and set the enc_dig_alg field properly based on the signing
11461 *) Allow PKCS#12 password to be set from the command line or the
11462 environment. Let 'ca' get its config file name from the environment
11463 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
11467 *) Allow certificate policies extension to use an IA5STRING for the
11468 organization field. This is contrary to the PKIX definition but
11469 VeriSign uses it and IE5 only recognises this form. Document 'x509'
11473 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
11474 without disallowing inline assembler and the like for non-pedantic builds.
11477 *) Support Borland C++ builder.
11478 [Janez Jere <jj@void.si>, modified by Ulf Möller]
11480 *) Support Mingw32.
11483 *) SHA-1 cleanups and performance enhancements.
11484 [Andy Polyakov <appro@fy.chalmers.se>]
11486 *) Sparc v8plus assembler for the bignum library.
11487 [Andy Polyakov <appro@fy.chalmers.se>]
11489 *) Accept any -xxx and +xxx compiler options in Configure.
11492 *) Update HPUX configuration.
11495 *) Add missing sk_<type>_unshift() function to safestack.h
11496 [Ralf S. Engelschall]
11498 *) New function SSL_CTX_use_certificate_chain_file that sets the
11499 "extra_cert"s in addition to the certificate. (This makes sense
11500 only for "PEM" format files, as chains as a whole are not
11504 *) Support verify_depth from the SSL API.
11505 x509_vfy.c had what can be considered an off-by-one-error:
11506 Its depth (which was not part of the external interface)
11507 was actually counting the number of certificates in a chain;
11508 now it really counts the depth.
11511 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
11512 instead of X509err, which often resulted in confusing error
11513 messages since the error codes are not globally unique
11514 (e.g. an alleged error in ssl3_accept when a certificate
11515 didn't match the private key).
11517 *) New function SSL_CTX_set_session_id_context that allows to set a default
11518 value (so that you don't need SSL_set_session_id_context for each
11519 connection using the SSL_CTX).
11522 *) OAEP decoding bug fix.
11525 *) Support INSTALL_PREFIX for package builders, as proposed by
11529 *) New Configure options "threads" and "no-threads". For systems
11530 where the proper compiler options are known (currently Solaris
11531 and Linux), "threads" is the default.
11534 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
11537 *) Install various scripts to $(OPENSSLDIR)/misc, not to
11538 $(INSTALLTOP)/bin -- they shouldn't clutter directories
11539 such as /usr/local/bin.
11542 *) "make linux-shared" to build shared libraries.
11543 [Niels Poppe <niels@netbox.org>]
11545 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
11548 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
11549 extension adding in x509 utility.
11552 *) Remove NOPROTO sections and error code comments.
11555 *) Partial rewrite of the DEF file generator to now parse the ANSI
11559 *) New Configure options --prefix=DIR and --openssldir=DIR.
11562 *) Complete rewrite of the error code script(s). It is all now handled
11563 by one script at the top level which handles error code gathering,
11564 header rewriting and C source file generation. It should be much better
11565 than the old method: it now uses a modified version of Ulf's parser to
11566 read the ANSI prototypes in all header files (thus the old K&R definitions
11567 aren't needed for error creation any more) and do a better job of
11568 translating function codes into names. The old 'ASN1 error code imbedded
11569 in a comment' is no longer necessary and it doesn't use .err files which
11570 have now been deleted. Also the error code call doesn't have to appear all
11571 on one line (which resulted in some large lines...).
11574 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
11577 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
11578 0 (which usually indicates a closed connection), but continue reading.
11581 *) Fix some race conditions.
11584 *) Add support for CRL distribution points extension. Add Certificate
11585 Policies and CRL distribution points documentation.
11588 *) Move the autogenerated header file parts to crypto/opensslconf.h.
11591 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
11592 8 of keying material. Merlin has also confirmed interop with this fix
11593 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
11594 [Merlin Hughes <merlin@baltimore.ie>]
11596 *) Fix lots of warnings.
11597 [Richard Levitte <levitte@stacken.kth.se>]
11599 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
11600 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
11601 [Richard Levitte <levitte@stacken.kth.se>]
11603 *) Fix problems with sizeof(long) == 8.
11604 [Andy Polyakov <appro@fy.chalmers.se>]
11606 *) Change functions to ANSI C.
11609 *) Fix typos in error codes.
11610 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
11612 *) Remove defunct assembler files from Configure.
11615 *) SPARC v8 assembler BIGNUM implementation.
11616 [Andy Polyakov <appro@fy.chalmers.se>]
11618 *) Support for Certificate Policies extension: both print and set.
11619 Various additions to support the r2i method this uses.
11622 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
11623 return a const string when you are expecting an allocated buffer.
11626 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
11627 types DirectoryString and DisplayText.
11630 *) Add code to allow r2i extensions to access the configuration database,
11631 add an LHASH database driver and add several ctx helper functions.
11634 *) Fix an evil bug in bn_expand2() which caused various BN functions to
11635 fail when they extended the size of a BIGNUM.
11638 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
11639 support typesafe stack.
11642 *) Fix typo in SSL_[gs]et_options().
11643 [Nils Frostberg <nils@medcom.se>]
11645 *) Delete various functions and files that belonged to the (now obsolete)
11646 old X509V3 handling code.
11649 *) New Configure option "rsaref".
11652 *) Don't auto-generate pem.h.
11655 *) Introduce type-safe ASN.1 SETs.
11658 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
11659 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
11661 *) Introduce type-safe STACKs. This will almost certainly break lots of code
11662 that links with OpenSSL (well at least cause lots of warnings), but fear
11663 not: the conversion is trivial, and it eliminates loads of evil casts. A
11664 few STACKed things have been converted already. Feel free to convert more.
11665 In the fullness of time, I'll do away with the STACK type altogether.
11668 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
11669 specified in <certfile> by updating the entry in the index.txt file.
11670 This way one no longer has to edit the index.txt file manually for
11671 revoking a certificate. The -revoke option does the gory details now.
11672 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
11674 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
11675 `-text' option at all and this way the `-noout -text' combination was
11676 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
11677 [Ralf S. Engelschall]
11679 *) Make sure a corresponding plain text error message exists for the
11680 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
11681 verify callback function determined that a certificate was revoked.
11682 [Ralf S. Engelschall]
11684 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
11685 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
11686 all available cipers including rc5, which was forgotten until now.
11687 In order to let the testing shell script know which algorithms
11688 are available, a new (up to now undocumented) command
11689 "openssl list-cipher-commands" is used.
11692 *) Bugfix: s_client occasionally would sleep in select() when
11693 it should have checked SSL_pending() first.
11696 *) New functions DSA_do_sign and DSA_do_verify to provide access to
11697 the raw DSA values prior to ASN.1 encoding.
11700 *) Tweaks to Configure
11701 [Niels Poppe <niels@netbox.org>]
11703 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
11707 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
11710 *) New config option to avoid instructions that are illegal on the 80386.
11711 The default code is faster, but requires at least a 486.
11714 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
11715 SSL2_SERVER_VERSION (not used at all) macros, which are now the
11716 same as SSL2_VERSION anyway.
11719 *) New "-showcerts" option for s_client.
11722 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
11723 application. Various cleanups and fixes.
11726 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
11727 modify error routines to work internally. Add error codes and PBE init
11728 to library startup routines.
11731 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
11732 packing functions to asn1 and evp. Changed function names and error
11733 codes along the way.
11736 *) PKCS12 integration: and so it begins... First of several patches to
11737 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
11738 objects to objects.h
11741 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
11742 and display support for Thawte strong extranet extension.
11745 *) Add LinuxPPC support.
11746 [Jeff Dubrule <igor@pobox.org>]
11748 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
11749 bn_div_words in alpha.s.
11750 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
11752 *) Make sure the RSA OAEP test is skipped under -DRSAref because
11753 OAEP isn't supported when OpenSSL is built with RSAref.
11754 [Ulf Moeller <ulf@fitug.de>]
11756 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
11757 so they no longer are missing under -DNOPROTO.
11758 [Soren S. Jorvang <soren@t.dk>]
11761 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
11763 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
11764 doesn't work when the session is reused. Coming soon!
11767 *) Fix a security hole, that allows sessions to be reused in the wrong
11768 context thus bypassing client cert protection! All software that uses
11769 client certs and session caches in multiple contexts NEEDS PATCHING to
11770 allow session reuse! A fuller solution is in the works.
11771 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
11773 *) Some more source tree cleanups (removed obsolete files
11774 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
11775 permission on "config" script to be executable) and a fix for the INSTALL
11777 [Ulf Moeller <ulf@fitug.de>]
11779 *) Remove some legacy and erroneous uses of malloc, free instead of
11781 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
11783 *) Make rsa_oaep_test return non-zero on error.
11784 [Ulf Moeller <ulf@fitug.de>]
11786 *) Add support for native Solaris shared libraries. Configure
11787 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
11788 if someone would make that last step automatic.
11789 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
11791 *) ctx_size was not built with the right compiler during "make links". Fixed.
11794 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
11795 except NULL ciphers". This means the default cipher list will no longer
11796 enable NULL ciphers. They need to be specifically enabled e.g. with
11797 the string "DEFAULT:eNULL".
11800 *) Fix to RSA private encryption routines: if p < q then it would
11801 occasionally produce an invalid result. This will only happen with
11802 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
11805 *) Be less restrictive and allow also `perl util/perlpath.pl
11806 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
11807 because this way one can also use an interpreter named `perl5' (which is
11808 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
11809 installed as `perl').
11810 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11812 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
11813 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
11815 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
11816 advapi32.lib to Win32 build and change the pem test comparison
11817 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
11818 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
11819 and crypto/des/ede_cbcm_enc.c.
11822 *) DES quad checksum was broken on big-endian architectures. Fixed.
11825 *) Comment out two functions in bio.h that aren't implemented. Fix up the
11826 Win32 test batch file so it (might) work again. The Win32 test batch file
11827 is horrible: I feel ill....
11830 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
11831 in e_os.h. Audit of header files to check ANSI and non ANSI
11832 sections: 10 functions were absent from non ANSI section and not exported
11833 from Windows DLLs. Fixed up libeay.num for new functions.
11836 *) Make `openssl version' output lines consistent.
11837 [Ralf S. Engelschall]
11839 *) Fix Win32 symbol export lists for BIO functions: Added
11840 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
11841 to ms/libeay{16,32}.def.
11842 [Ralf S. Engelschall]
11844 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
11845 fine under Unix and passes some trivial tests I've now added. But the
11846 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
11847 added to make sure no one expects that this stuff really works in the
11848 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
11849 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
11851 [Ralf S. Engelschall]
11853 *) Fix the generation of two part addresses in perl.
11854 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
11856 *) Add config entry for Linux on MIPS.
11857 [John Tobey <jtobey@channel1.com>]
11859 *) Make links whenever Configure is run, unless we are on Windoze.
11862 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
11863 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
11867 *) Add a useful kludge to allow package maintainers to specify compiler and
11868 other platforms details on the command line without having to patch the
11869 Configure script everytime: One now can use ``perl Configure
11870 <id>:<details>'', i.e. platform ids are allowed to have details appended
11871 to them (separated by colons). This is treated as there would be a static
11872 pre-configured entry in Configure's %table under key <id> with value
11873 <details> and ``perl Configure <id>'' is called. So, when you want to
11874 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
11875 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
11876 now, which overrides the FreeBSD-elf entry on-the-fly.
11877 [Ralf S. Engelschall]
11879 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
11882 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
11883 on the `perl Configure ...' command line. This way one can compile
11884 OpenSSL libraries with Position Independent Code (PIC) which is needed
11885 for linking it into DSOs.
11886 [Ralf S. Engelschall]
11888 *) Remarkably, export ciphers were totally broken and no-one had noticed!
11892 *) Cleaned up the LICENSE document: The official contact for any license
11893 questions now is the OpenSSL core team under openssl-core@openssl.org.
11894 And add a paragraph about the dual-license situation to make sure people
11895 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
11896 to the OpenSSL toolkit.
11897 [Ralf S. Engelschall]
11899 *) General source tree makefile cleanups: Made `making xxx in yyy...'
11900 display consistent in the source tree and replaced `/bin/rm' by `rm'.
11901 Additionally cleaned up the `make links' target: Remove unnecessary
11902 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
11903 to speed processing and no longer clutter the display with confusing
11904 stuff. Instead only the actually done links are displayed.
11905 [Ralf S. Engelschall]
11907 *) Permit null encryption ciphersuites, used for authentication only. It used
11908 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
11909 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
11913 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
11914 signed attributes when verifying signatures (this would break them),
11915 the detached data encoding was wrong and public keys obtained using
11916 X509_get_pubkey() weren't freed.
11919 *) Add text documentation for the BUFFER functions. Also added a work around
11920 to a Win95 console bug. This was triggered by the password read stuff: the
11921 last character typed gets carried over to the next fread(). If you were
11922 generating a new cert request using 'req' for example then the last
11923 character of the passphrase would be CR which would then enter the first
11927 *) Added the new `Includes OpenSSL Cryptography Software' button as
11928 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
11929 button and can be used by applications based on OpenSSL to show the
11930 relationship to the OpenSSL project.
11931 [Ralf S. Engelschall]
11933 *) Remove confusing variables in function signatures in files
11934 ssl/ssl_lib.c and ssl/ssl.h.
11935 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11937 *) Don't install bss_file.c under PREFIX/include/
11938 [Lennart Bong <lob@kulthea.stacken.kth.se>]
11940 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
11941 functions that return function pointers and has support for NT specific
11942 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
11943 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
11944 unsigned to signed types: this was killing the Win32 compile.
11947 *) Add new certificate file to stack functions,
11948 SSL_add_dir_cert_subjects_to_stack() and
11949 SSL_add_file_cert_subjects_to_stack(). These largely supplant
11950 SSL_load_client_CA_file(), and can be used to add multiple certs easily
11951 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
11952 This means that Apache-SSL and similar packages don't have to mess around
11953 to add as many CAs as they want to the preferred list.
11956 *) Experiment with doxygen documentation. Currently only partially applied to
11958 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
11959 openssl.doxy as the configuration file.
11962 *) Get rid of remaining C++-style comments which strict C compilers hate.
11963 [Ralf S. Engelschall, pointed out by Carlos Amengual]
11965 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
11966 compiled in by default: it has problems with large keys.
11969 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
11970 DH private keys and/or callback functions which directly correspond to
11971 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
11972 is needed for applications which have to configure certificates on a
11973 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
11975 For the RSA certificate situation is makes no difference, but
11976 for the DSA certificate situation this fixes the "no shared cipher"
11977 problem where the OpenSSL cipher selection procedure failed because the
11978 temporary keys were not overtaken from the context and the API provided
11979 no way to reconfigure them.
11980 The new functions now let applications reconfigure the stuff and they
11981 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
11982 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
11983 non-public-API function ssl_cert_instantiate() is used as a helper
11984 function and also to reduce code redundancy inside ssl_rsa.c.
11985 [Ralf S. Engelschall]
11987 *) Move s_server -dcert and -dkey options out of the undocumented feature
11988 area because they are useful for the DSA situation and should be
11989 recognized by the users.
11990 [Ralf S. Engelschall]
11992 *) Fix the cipher decision scheme for export ciphers: the export bits are
11993 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
11994 SSL_EXP_MASK. So, the original variable has to be used instead of the
11995 already masked variable.
11996 [Richard Levitte <levitte@stacken.kth.se>]
11998 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
11999 [Richard Levitte <levitte@stacken.kth.se>]
12001 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
12002 from `int' to `unsigned int' because it's a length and initialized by
12003 EVP_DigestFinal() which expects an `unsigned int *'.
12004 [Richard Levitte <levitte@stacken.kth.se>]
12006 *) Don't hard-code path to Perl interpreter on shebang line of Configure
12007 script. Instead use the usual Shell->Perl transition trick.
12008 [Ralf S. Engelschall]
12010 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
12011 (in addition to RSA certificates) to match the behaviour of `openssl dsa
12012 -noout -modulus' as it's already the case for `openssl rsa -noout
12013 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
12014 currently the public key is printed (a decision which was already done by
12015 `openssl dsa -modulus' in the past) which serves a similar purpose.
12016 Additionally the NO_RSA no longer completely removes the whole -modulus
12017 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
12019 [Ralf S. Engelschall]
12021 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
12022 BIO. See the source (crypto/evp/bio_ok.c) for more info.
12023 [Arne Ansper <arne@ats.cyber.ee>]
12025 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
12026 to be added. Now both 'req' and 'ca' can use new objects defined in the
12030 *) Add cool BIO that does syslog (or event log on NT).
12031 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
12033 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
12034 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
12035 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
12036 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
12039 *) Add preliminary config info for new extension code.
12042 *) Make RSA_NO_PADDING really use no padding.
12043 [Ulf Moeller <ulf@fitug.de>]
12045 *) Generate errors when private/public key check is done.
12048 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
12049 for some CRL extensions and new objects added.
12052 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
12053 key usage extension and fuller support for authority key id.
12056 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
12057 padding method for RSA, which is recommended for new applications in PKCS
12058 #1 v2.0 (RFC 2437, October 1998).
12059 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
12060 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
12061 against Bleichbacher's attack on RSA.
12062 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
12065 *) Updates to the new SSL compression code
12066 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12068 *) Fix so that the version number in the master secret, when passed
12069 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
12070 (because the server will not accept higher), that the version number
12071 is 0x03,0x01, not 0x03,0x00
12072 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12074 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
12075 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
12076 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
12079 *) Support for RAW extensions where an arbitrary extension can be
12080 created by including its DER encoding. See apps/openssl.cnf for
12084 *) Make sure latest Perl versions don't interpret some generated C array
12085 code as Perl array code in the crypto/err/err_genc.pl script.
12086 [Lars Weber <3weber@informatik.uni-hamburg.de>]
12088 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
12089 not many people have the assembler. Various Win32 compilation fixes and
12090 update to the INSTALL.W32 file with (hopefully) more accurate Win32
12091 build instructions.
12094 *) Modify configure script 'Configure' to automatically create crypto/date.h
12095 file under Win32 and also build pem.h from pem.org. New script
12096 util/mkfiles.pl to create the MINFO file on environments that can't do a
12097 'make files': perl util/mkfiles.pl >MINFO should work.
12100 *) Major rework of DES function declarations, in the pursuit of correctness
12101 and purity. As a result, many evil casts evaporated, and some weirdness,
12102 too. You may find this causes warnings in your code. Zapping your evil
12103 casts will probably fix them. Mostly.
12106 *) Fix for a typo in asn1.h. Bug fix to object creation script
12107 obj_dat.pl. It considered a zero in an object definition to mean
12108 "end of object": none of the objects in objects.h have any zeros
12109 so it wasn't spotted.
12110 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
12112 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
12113 Masking (CBCM). In the absence of test vectors, the best I have been able
12114 to do is check that the decrypt undoes the encrypt, so far. Send me test
12115 vectors if you have them.
12118 *) Correct calculation of key length for export ciphers (too much space was
12119 allocated for null ciphers). This has not been tested!
12122 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
12123 message is now correct (it understands "crypto" and "ssl" on its
12124 command line). There is also now an "update" option. This will update
12125 the util/ssleay.num and util/libeay.num files with any new functions.
12127 perl util/mkdef.pl crypto ssl update
12128 it will update them.
12131 *) Overhauled the Perl interface (perl/*):
12132 - ported BN stuff to OpenSSL's different BN library
12133 - made the perl/ source tree CVS-aware
12134 - renamed the package from SSLeay to OpenSSL (the files still contain
12135 their history because I've copied them in the repository)
12136 - removed obsolete files (the test scripts will be replaced
12137 by better Test::Harness variants in the future)
12138 [Ralf S. Engelschall]
12140 *) First cut for a very conservative source tree cleanup:
12141 1. merge various obsolete readme texts into doc/ssleay.txt
12142 where we collect the old documents and readme texts.
12143 2. remove the first part of files where I'm already sure that we no
12144 longer need them because of three reasons: either they are just temporary
12145 files which were left by Eric or they are preserved original files where
12146 I've verified that the diff is also available in the CVS via "cvs diff
12147 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
12148 the crypto/md/ stuff).
12149 [Ralf S. Engelschall]
12151 *) More extension code. Incomplete support for subject and issuer alt
12152 name, issuer and authority key id. Change the i2v function parameters
12153 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
12154 what that's for :-) Fix to ASN1 macro which messed up
12155 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
12158 *) Preliminary support for ENUMERATED type. This is largely copied from the
12162 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
12163 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12165 *) Make sure `make rehash' target really finds the `openssl' program.
12166 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
12168 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
12169 like to hear about it if this slows down other processors.
12172 *) Add CygWin32 platform information to Configure script.
12173 [Alan Batie <batie@aahz.jf.intel.com>]
12175 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
12176 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
12178 *) New program nseq to manipulate netscape certificate sequences
12181 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
12185 *) Fixes to BN code. Previously the default was to define BN_RECURSION
12186 but the BN code had some problems that would cause failures when
12187 doing certificate verification and some other functions.
12188 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
12190 *) Add ASN1 and PEM code to support netscape certificate sequences.
12193 *) Add ASN1 and PEM code to support netscape certificate sequences.
12196 *) Add several PKIX and private extended key usage OIDs.
12199 *) Modify the 'ca' program to handle the new extension code. Modify
12200 openssl.cnf for new extension format, add comments.
12203 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
12204 and add a sample to openssl.cnf so req -x509 now adds appropriate
12208 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
12209 error code, add initial support to X509_print() and x509 application.
12212 *) Takes a deep breath and start adding X509 V3 extension support code. Add
12213 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
12214 stuff is currently isolated and isn't even compiled yet.
12217 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
12218 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
12219 Removed the versions check from X509 routines when loading extensions:
12220 this allows certain broken certificates that don't set the version
12221 properly to be processed.
12224 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
12225 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
12226 can still be regenerated with "make depend".
12229 *) Spelling mistake in C version of CAST-128.
12230 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
12232 *) Changes to the error generation code. The perl script err-code.pl
12233 now reads in the old error codes and retains the old numbers, only
12234 adding new ones if necessary. It also only changes the .err files if new
12235 codes are added. The makefiles have been modified to only insert errors
12236 when needed (to avoid needlessly modifying header files). This is done
12237 by only inserting errors if the .err file is newer than the auto generated
12238 C file. To rebuild all the error codes from scratch (the old behaviour)
12239 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
12240 or delete all the .err files.
12243 *) CAST-128 was incorrectly implemented for short keys. The C version has
12244 been fixed, but is untested. The assembler versions are also fixed, but
12245 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
12246 to regenerate it if needed.
12247 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
12248 Hagino <itojun@kame.net>]
12250 *) File was opened incorrectly in randfile.c.
12251 [Ulf Möller <ulf@fitug.de>]
12253 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
12254 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
12255 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
12256 al: it's just almost always a UTCTime. Note this patch adds new error
12257 codes so do a "make errors" if there are problems.
12260 *) Correct Linux 1 recognition in config.
12261 [Ulf Möller <ulf@fitug.de>]
12263 *) Remove pointless MD5 hash when using DSA keys in ca.
12264 [Anonymous <nobody@replay.com>]
12266 *) Generate an error if given an empty string as a cert directory. Also
12267 generate an error if handed NULL (previously returned 0 to indicate an
12268 error, but didn't set one).
12269 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
12271 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
12274 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
12275 parameters. This was causing a warning which killed off the Win32 compile.
12278 *) Remove C++ style comments from crypto/bn/bn_local.h.
12279 [Neil Costigan <neil.costigan@celocom.com>]
12281 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
12282 based on a text string, looking up short and long names and finally
12283 "dot" format. The "dot" format stuff didn't work. Added new function
12284 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
12285 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
12286 OID is not part of the table.
12289 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
12290 X509_LOOKUP_by_alias().
12293 *) Sort openssl functions by name.
12296 *) Get the gendsa program working (hopefully) and add it to app list. Remove
12297 encryption from sample DSA keys (in case anyone is interested the password
12301 *) Make _all_ *_free functions accept a NULL pointer.
12302 [Frans Heymans <fheymans@isaserver.be>]
12304 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
12306 [Anonymous <nobody@replay.com>]
12308 *) s_server should send the CAfile as acceptable CAs, not its own cert.
12309 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12311 *) Don't blow it for numeric -newkey arguments to apps/req.
12312 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
12314 *) Temp key "for export" tests were wrong in s3_srvr.c.
12315 [Anonymous <nobody@replay.com>]
12317 *) Add prototype for temp key callback functions
12318 SSL_CTX_set_tmp_{rsa,dh}_callback().
12321 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
12322 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
12325 *) X509_name_add_entry() freed the wrong thing after an error.
12326 [Arne Ansper <arne@ats.cyber.ee>]
12328 *) rsa_eay.c would attempt to free a NULL context.
12329 [Arne Ansper <arne@ats.cyber.ee>]
12331 *) BIO_s_socket() had a broken should_retry() on Windoze.
12332 [Arne Ansper <arne@ats.cyber.ee>]
12334 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
12335 [Arne Ansper <arne@ats.cyber.ee>]
12337 *) Make sure the already existing X509_STORE->depth variable is initialized
12338 in X509_STORE_new(), but document the fact that this variable is still
12339 unused in the certificate verification process.
12340 [Ralf S. Engelschall]
12342 *) Fix the various library and apps files to free up pkeys obtained from
12343 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
12346 *) Fix reference counting in X509_PUBKEY_get(). This makes
12347 demos/maurice/example2.c work, amongst others, probably.
12348 [Steve Henson and Ben Laurie]
12350 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
12351 `openssl' and second, the shortcut symlinks for the `openssl <command>'
12352 are no longer created. This way we have a single and consistent command
12353 line interface `openssl <command>', similar to `cvs <command>'.
12354 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
12356 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
12357 BIT STRING wrapper always have zero unused bits.
12360 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
12363 *) Make the top-level INSTALL documentation easier to understand.
12366 *) Makefiles updated to exit if an error occurs in a sub-directory
12367 make (including if user presses ^C) [Paul Sutton]
12369 *) Make Montgomery context stuff explicit in RSA data structure.
12372 *) Fix build order of pem and err to allow for generated pem.h.
12375 *) Fix renumbering bug in X509_NAME_delete_entry().
12378 *) Enhanced the err-ins.pl script so it makes the error library number
12379 global and can add a library name. This is needed for external ASN1 and
12380 other error libraries.
12383 *) Fixed sk_insert which never worked properly.
12386 *) Fix ASN1 macros so they can handle indefinite length constructed
12387 EXPLICIT tags. Some non standard certificates use these: they can now
12391 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
12392 into a single doc/ssleay.txt bundle. This way the information is still
12393 preserved but no longer messes up this directory. Now it's new room for
12394 the new set of documentation files.
12395 [Ralf S. Engelschall]
12397 *) SETs were incorrectly DER encoded. This was a major pain, because they
12398 shared code with SEQUENCEs, which aren't coded the same. This means that
12399 almost everything to do with SETs or SEQUENCEs has either changed name or
12400 number of arguments.
12401 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
12403 *) Fix test data to work with the above.
12406 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
12407 was already fixed by Eric for 0.9.1 it seems.
12408 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
12410 *) Autodetect FreeBSD3.
12413 *) Fix various bugs in Configure. This affects the following platforms:
12417 unixware-2.0-pentium
12421 *) Eliminate generated files from CVS. Reorder tests to regenerate files
12422 before they are needed.
12425 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
12429 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
12431 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
12432 changed SSLeay to OpenSSL in version strings.
12433 [Ralf S. Engelschall]
12435 *) Some fixups to the top-level documents.
12438 *) Fixed the nasty bug where rsaref.h was not found under compile-time
12439 because the symlink to include/ was missing.
12440 [Ralf S. Engelschall]
12442 *) Incorporated the popular no-RSA/DSA-only patches
12443 which allow to compile a RSA-free SSLeay.
12444 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
12446 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
12447 when "ssleay" is still not found.
12448 [Ralf S. Engelschall]
12450 *) Added more platforms to Configure: Cray T3E, HPUX 11,
12451 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
12453 *) Updated the README file.
12454 [Ralf S. Engelschall]
12456 *) Added various .cvsignore files in the CVS repository subdirs
12457 to make a "cvs update" really silent.
12458 [Ralf S. Engelschall]
12460 *) Recompiled the error-definition header files and added
12461 missing symbols to the Win32 linker tables.
12462 [Ralf S. Engelschall]
12464 *) Cleaned up the top-level documents;
12465 o new files: CHANGES and LICENSE
12466 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
12467 o merged COPYRIGHT into LICENSE
12468 o removed obsolete TODO file
12469 o renamed MICROSOFT to INSTALL.W32
12470 [Ralf S. Engelschall]
12472 *) Removed dummy files from the 0.9.1b source tree:
12473 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
12474 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
12475 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
12476 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
12477 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
12478 [Ralf S. Engelschall]
12480 *) Added various platform portability fixes.
12483 *) The Genesis of the OpenSSL rpject:
12484 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
12485 Young and Tim J. Hudson created while they were working for C2Net until
12487 [The OpenSSL Project]
12490 Changes between 0.9.0b and 0.9.1b [not released]
12492 *) Updated a few CA certificates under certs/
12495 *) Changed some BIGNUM api stuff.
12498 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
12499 DGUX x86, Linux Alpha, etc.
12502 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
12503 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
12507 *) Add -strparse option to asn1pars program which parses nested
12509 [Dr Stephen Henson <shenson@bigfoot.com>]
12511 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
12514 *) DSA fix for "ca" program.
12517 *) Added "-genkey" option to "dsaparam" program.
12520 *) Added RIPE MD160 (rmd160) message digest.
12523 *) Added -a (all) option to "ssleay version" command.
12526 *) Added PLATFORM define which is the id given to Configure.
12529 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
12532 *) Extended the ASN.1 parser routines.
12535 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
12538 *) Added a BN_CTX to the BN library.
12541 *) Fixed the weak key values in DES library
12544 *) Changed API in EVP library for cipher aliases.
12547 *) Added support for RC2/64bit cipher.
12550 *) Converted the lhash library to the crypto/mem.c functions.
12553 *) Added more recognized ASN.1 object ids.
12556 *) Added more RSA padding checks for SSL/TLS.
12559 *) Added BIO proxy/filter functionality.
12562 *) Added extra_certs to SSL_CTX which can be used
12563 send extra CA certificates to the client in the CA cert chain sending
12564 process. It can be configured with SSL_CTX_add_extra_chain_cert().
12567 *) Now Fortezza is denied in the authentication phase because
12568 this is key exchange mechanism is not supported by SSLeay at all.
12571 *) Additional PKCS1 checks.
12574 *) Support the string "TLSv1" for all TLS v1 ciphers.
12577 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
12578 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
12581 *) Fixed a few memory leaks.
12584 *) Fixed various code and comment typos.
12587 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
12588 bytes sent in the client random.
12589 [Edward Bishop <ebishop@spyglass.com>]