5 Changes between 0.9.8a and 0.9.9 [xx XXX xxxx]
7 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
8 for the psk identity [hint] and the psk callback functions to the
9 SSL_SESSION, SSL and SSL_CTX structure.
12 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
16 SSL_CTX_use_psk_identity_hint
17 SSL_get_psk_identity_hint
19 SSL_use_psk_identity_hint
21 [Mika Kousa and Pasi Eronen of Nokia Corporation]
23 *) Add RFC 3161 compliant time stamp request creation, response generation
24 and response verification functionality.
25 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
27 *) Add initial support for TLS extensions, specifically for the server_name
28 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
29 have new members for a host name. The SSL data structure has an
30 additional member SSL_CTX *initial_ctx so that new sessions can be
31 stored in that context to allow for session resumption, even after the
32 SSL has been switched to a new SSL_CTX in reaction to a client's
33 server_name extension.
35 New functions (subject to change):
38 SSL_get_servername_type()
41 New CTRL codes and macros (subject to change):
43 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
44 - SSL_CTX_set_tlsext_servername_callback()
45 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
46 - SSL_CTX_set_tlsext_servername_arg()
47 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_hostname()
49 openssl s_client has a new '-servername ...' option.
51 openssl s_server has new options '-servername_host ...', '-cert2 ...',
52 '-key2 ...', '-servername_fatal' (subject to change). This allows
53 testing the HostName extension for a specific single host name ('-cert'
54 and '-key' remain fallbacks for handshakes without HostName
55 negotiation). If the unrecogninzed_name alert has to be sent, this by
56 default is a warning; it becomes fatal with the '-servername_fatal'
59 [Peter Sylvester, Remy Allais, Christophe Renou]
61 *) Whirlpool hash implementation is added.
64 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
65 bn(64,32). Because of instruction set limitations it doesn't have
66 any negative impact on performance. This was done mostly in order
67 to make it possible to share assembler modules, such as bn_mul_mont
68 implementations, between 32- and 64-bit builds without hassle.
71 *) Disable rogue ciphersuites:
73 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
74 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
75 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
77 The latter two were purportedly from
78 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
81 Other ciphersuites from draft-ietf-tls-56-bit-ciphersuites-01.txt
82 remain enabled for now, but are just as unofficial, and the ID
83 has long expired; these will probably disappear soon.
86 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
87 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
91 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
92 dedicated Montgomery multiplication procedure, is introduced.
93 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
94 "64-bit" performance on certain 32-bit targets.
97 *) New option SSL_OP_NO_COMP to disable use of compression selectively
98 in SSL structures. New SSL ctrl to set maximum send fragment size.
99 Save memory by seeting the I/O buffer sizes dynamically instead of
100 using the maximum available value.
103 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
104 in addition to the text details.
107 *) Very, very preliminary EXPERIMENTAL support for printing of general
108 ASN1 structures. This currently produces rather ugly output and doesn't
109 handle several customised structures at all.
112 *) Integrated support for PVK file format and some related formats such
113 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
114 these in the 'rsa' and 'dsa' utilities.
117 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
120 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
121 place for the (very old) "NETSCAPE" format certificates which are now
122 handled using new ASN1 code equivalents.
125 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
126 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
127 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
130 *) Modify CRL distribution points extension code to print out previously
131 unsupported fields. Enhance extension setting code to allow setting of
135 *) Add print and set support for Issuing Distribution Point CRL extension.
138 Changes between 0.9.8a and 0.9.8b [XX xxx XXXX]
140 *) Link in manifests for VC++ if needed.
141 [Austin Ziegler <halostatue@gmail.com>]
143 *) Update support for ECC-based TLS ciphersuites according to
144 draft-ietf-tls-ecc-12.txt with proposed changes (but without
145 TLS extensions, which are supported starting with the 0.9.9
146 branch, not in the OpenSSL 0.9.8 branch).
149 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
150 opaque EVP_CIPHER_CTX handling.
153 *) Fixes and enhancements to zlib compression code. We now only use
154 "zlib1.dll" and use the default __cdecl calling convention on Win32
155 to conform with the standards mentioned here:
156 http://www.zlib.net/DLL_FAQ.txt
157 Static zlib linking now works on Windows and the new --with-zlib-include
158 --with-zlib-lib options to Configure can be used to supply the location
159 of the headers and library. Gracefully handle case where zlib library
163 *) Several fixes and enhancements to the OID generation code. The old code
164 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
165 handle numbers larger than ULONG_MAX, truncated printing and had a
166 non standard OBJ_obj2txt() behaviour.
169 *) Add support for building of engines under engine/ as shared libraries
170 under VC++ build system.
173 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
174 Hopefully, we will not see any false combination of paths any more.
177 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
179 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
180 (part of SSL_OP_ALL). This option used to disable the
181 countermeasure against man-in-the-middle protocol-version
182 rollback in the SSL 2.0 server implementation, which is a bad
183 idea. (CVE-2005-2969)
185 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
186 for Information Security, National Institute of Advanced Industrial
187 Science and Technology [AIST], Japan)]
189 *) Add two function to clear and return the verify parameter flags.
192 *) Keep cipherlists sorted in the source instead of sorting them at
193 runtime, thus removing the need for a lock.
196 *) Avoid some small subgroup attacks in Diffie-Hellman.
197 [Nick Mathewson and Ben Laurie]
199 *) Add functions for well-known primes.
202 *) Extended Windows CE support.
203 [Satoshi Nakamura and Andy Polyakov]
205 *) Initialize SSL_METHOD structures at compile time instead of during
206 runtime, thus removing the need for a lock.
209 *) Make PKCS7_decrypt() work even if no certificate is supplied by
210 attempting to decrypt each encrypted key in turn. Add support to
214 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
216 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
219 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
220 key into the same file any more.
223 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
226 *) Add -utf8 command line and config file option to 'ca'.
227 [Stefan <stf@udoma.org]
229 *) Removed the macro des_crypt(), as it seems to conflict with some
230 libraries. Use DES_crypt().
233 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
234 involves renaming the source and generated shared-libs for
235 both. The engines will accept the corrected or legacy ids
236 ('ncipher' and '4758_cca' respectively) when binding. NB,
237 this only applies when building 'shared'.
238 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
240 *) Add attribute functions to EVP_PKEY structure. Modify
241 PKCS12_create() to recognize a CSP name attribute and
242 use it. Make -CSP option work again in pkcs12 utility.
245 *) Add new functionality to the bn blinding code:
246 - automatic re-creation of the BN_BLINDING parameters after
247 a fixed number of uses (currently 32)
248 - add new function for parameter creation
249 - introduce flags to control the update behaviour of the
250 BN_BLINDING parameters
251 - hide BN_BLINDING structure
252 Add a second BN_BLINDING slot to the RSA structure to improve
253 performance when a single RSA object is shared among several
257 *) Add support for DTLS.
258 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
260 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
261 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
264 *) Remove buggy and incompletet DH cert support from
265 ssl/ssl_rsa.c and ssl/s3_both.c
268 *) Use SHA-1 instead of MD5 as the default digest algorithm for
269 the apps/openssl applications.
272 *) Compile clean with "-Wall -Wmissing-prototypes
273 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
274 DEBUG_SAFESTACK must also be set.
277 *) Change ./Configure so that certain algorithms can be disabled by default.
278 The new counterpiece to "no-xxx" is "enable-xxx".
280 The patented RC5 and MDC2 algorithms will now be disabled unless
281 "enable-rc5" and "enable-mdc2", respectively, are specified.
283 (IDEA remains enabled despite being patented. This is because IDEA
284 is frequently required for interoperability, and there is no license
285 fee for non-commercial use. As before, "no-idea" can be used to
286 avoid this algorithm.)
290 *) Add processing of proxy certificates (see RFC 3820). This work was
291 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
292 EGEE (Enabling Grids for E-science in Europe).
295 *) RC4 performance overhaul on modern architectures/implementations, such
296 as Intel P4, IA-64 and AMD64.
299 *) New utility extract-section.pl. This can be used specify an alternative
300 section number in a pod file instead of having to treat each file as
301 a separate case in Makefile. This can be done by adding two lines to the
304 =for comment openssl_section:XXX
306 The blank line is mandatory.
310 *) New arguments -certform, -keyform and -pass for s_client and s_server
311 to allow alternative format key and certificate files and passphrase
315 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
316 update associated structures and add various utility functions.
318 Add new policy related verify parameters, include policy checking in
319 standard verify code. Enhance 'smime' application with extra parameters
320 to support policy checking and print out.
323 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
324 Nehemiah processors. These extensions support AES encryption in hardware
325 as well as RNG (though RNG support is currently disabled).
326 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
328 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
331 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
332 [Andy Polyakov and a number of other people]
334 *) Improved PowerPC platform support. Most notably BIGNUM assembler
335 implementation contributed by IBM.
336 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
338 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
339 exponent rather than 'unsigned long'. There is a corresponding change to
340 the new 'rsa_keygen' element of the RSA_METHOD structure.
341 [Jelte Jansen, Geoff Thorpe]
343 *) Functionality for creating the initial serial number file is now
344 moved from CA.pl to the 'ca' utility with a new option -create_serial.
346 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
347 number file to 1, which is bound to cause problems. To avoid
348 the problems while respecting compatibility between different 0.9.7
349 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
350 CA.pl for serial number initialization. With the new release 0.9.8,
351 we can fix the problem directly in the 'ca' utility.)
354 *) Reduced header interdepencies by declaring more opaque objects in
355 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
356 give fewer recursive includes, which could break lazy source code - so
357 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
358 developers should define this symbol when building and using openssl to
359 ensure they track the recommended behaviour, interfaces, [etc], but
360 backwards-compatible behaviour prevails when this isn't defined.
363 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
366 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
367 This will generate a random key of the appropriate length based on the
368 cipher context. The EVP_CIPHER can provide its own random key generation
369 routine to support keys of a specific form. This is used in the des and
370 3des routines to generate a key of the correct parity. Update S/MIME
371 code to use new functions and hence generate correct parity DES keys.
372 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
373 valid (weak or incorrect parity).
376 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
377 as looking them up. This is useful when the verified structure may contain
378 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
379 present unless the new PKCS7_NO_CRL flag is asserted.
382 *) Extend ASN1 oid configuration module. It now additionally accepts the
385 shortName = some long name, 1.2.3.4
388 *) Reimplemented the BN_CTX implementation. There is now no more static
389 limitation on the number of variables it can handle nor the depth of the
390 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
391 information can now expand as required, and rather than having a single
392 static array of bignums, BN_CTX now uses a linked-list of such arrays
393 allowing it to expand on demand whilst maintaining the usefulness of
397 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
398 to allow all RSA operations to function using a single BN_CTX.
401 *) Preliminary support for certificate policy evaluation and checking. This
402 is initially intended to pass the tests outlined in "Conformance Testing
403 of Relying Party Client Certificate Path Processing Logic" v1.07.
406 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
407 remained unused and not that useful. A variety of other little bignum
408 tweaks and fixes have also been made continuing on from the audit (see
412 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
413 associated ASN1, EVP and SSL functions and old ASN1 macros.
416 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
417 and this should never fail. So the return value from the use of
418 BN_set_word() (which can fail due to needless expansion) is now deprecated;
419 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
422 *) BN_CTX_get() should return zero-valued bignums, providing the same
423 initialised value as BN_new().
424 [Geoff Thorpe, suggested by Ulf Möller]
426 *) Support for inhibitAnyPolicy certificate extension.
429 *) An audit of the BIGNUM code is underway, for which debugging code is
430 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
431 is considered valid when processing BIGNUMs, and causes execution to
432 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
433 further steps are taken to deliberately pollute unused data in BIGNUM
434 structures to try and expose faulty code further on. For now, openssl will
435 (in its default mode of operation) continue to tolerate the inconsistent
436 forms that it has tolerated in the past, but authors and packagers should
437 consider trying openssl and their own applications when compiled with
438 these debugging symbols defined. It will help highlight potential bugs in
439 their own code, and will improve the test coverage for OpenSSL itself. At
440 some point, these tighter rules will become openssl's default to improve
441 maintainability, though the assert()s and other overheads will remain only
442 in debugging configurations. See bn.h for more details.
443 [Geoff Thorpe, Nils Larsch, Ulf Möller]
445 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
446 that can only be obtained through BN_CTX_new() (which implicitly
447 initialises it). The presence of this function only made it possible
448 to overwrite an existing structure (and cause memory leaks).
451 *) Because of the callback-based approach for implementing LHASH as a
452 template type, lh_insert() adds opaque objects to hash-tables and
453 lh_doall() or lh_doall_arg() are typically used with a destructor callback
454 to clean up those corresponding objects before destroying the hash table
455 (and losing the object pointers). So some over-zealous constifications in
456 LHASH have been relaxed so that lh_insert() does not take (nor store) the
457 objects as "const" and the lh_doall[_arg] callback wrappers are not
458 prototyped to have "const" restrictions on the object pointers they are
459 given (and so aren't required to cast them away any more).
462 *) The tmdiff.h API was so ugly and minimal that our own timing utility
463 (speed) prefers to use its own implementation. The two implementations
464 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
465 its object type properly exposed (MS_TM) instead of casting to/from "char
466 *". This may still change yet if someone realises MS_TM and "ms_time_***"
467 aren't necessarily the greatest nomenclatures - but this is what was used
468 internally to the implementation so I've used that for now.
471 *) Ensure that deprecated functions do not get compiled when
472 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
473 the self-tests were still using deprecated key-generation functions so
474 these have been updated also.
477 *) Reorganise PKCS#7 code to separate the digest location functionality
478 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
479 New function PKCS7_set_digest() to set the digest type for PKCS#7
480 digestedData type. Add additional code to correctly generate the
481 digestedData type and add support for this type in PKCS7 initialization
485 *) New function PKCS7_set0_type_other() this initializes a PKCS7
486 structure of type "other".
489 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
490 sure the loop does correctly stop and breaking ("division by zero")
491 modulus operations are not performed. The (pre-generated) prime
492 table crypto/bn/bn_prime.h was already correct, but it could not be
493 re-generated on some platforms because of the "division by zero"
494 situation in the script.
495 [Ralf S. Engelschall]
497 *) Update support for ECC-based TLS ciphersuites according to
498 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
499 SHA-1 now is only used for "small" curves (where the
500 representation of a field element takes up to 24 bytes); for
501 larger curves, the field element resulting from ECDH is directly
502 used as premaster secret.
503 [Douglas Stebila (Sun Microsystems Laboratories)]
505 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
506 curve secp160r1 to the tests.
507 [Douglas Stebila (Sun Microsystems Laboratories)]
509 *) Add the possibility to load symbols globally with DSO.
510 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
512 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
513 control of the error stack.
516 *) Add support for STORE in ENGINE.
519 *) Add the STORE type. The intention is to provide a common interface
520 to certificate and key stores, be they simple file-based stores, or
521 HSM-type store, or LDAP stores, or...
522 NOTE: The code is currently UNTESTED and isn't really used anywhere.
525 *) Add a generic structure called OPENSSL_ITEM. This can be used to
526 pass a list of arguments to any function as well as provide a way
527 for a function to pass data back to the caller.
530 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
531 works like BUF_strdup() but can be used to duplicate a portion of
532 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
536 *) Add the function sk_find_ex() which works like sk_find(), but will
537 return an index to an element even if an exact match couldn't be
538 found. The index is guaranteed to point at the element where the
539 searched-for key would be inserted to preserve sorting order.
542 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
543 takes an extra flags argument for optional functionality. Currently,
544 the following flags are defined:
546 OBJ_BSEARCH_VALUE_ON_NOMATCH
547 This one gets OBJ_bsearch_ex() to return a pointer to the first
548 element where the comparing function returns a negative or zero
551 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
552 This one gets OBJ_bsearch_ex() to return a pointer to the first
553 element where the comparing function returns zero. This is useful
554 if there are more than one element where the comparing function
558 *) Make it possible to create self-signed certificates with 'openssl ca'
559 in such a way that the self-signed certificate becomes part of the
560 CA database and uses the same mechanisms for serial number generation
561 as all other certificate signing. The new flag '-selfsign' enables
562 this functionality. Adapt CA.sh and CA.pl.in.
565 *) Add functionality to check the public key of a certificate request
566 against a given private. This is useful to check that a certificate
567 request can be signed by that key (self-signing).
570 *) Make it possible to have multiple active certificates with the same
571 subject in the CA index file. This is done only if the keyword
572 'unique_subject' is set to 'no' in the main CA section (default
573 if 'CA_default') of the configuration file. The value is saved
574 with the database itself in a separate index attribute file,
575 named like the index file with '.attr' appended to the name.
578 *) Generate muti valued AVAs using '+' notation in config files for
582 *) Support for nameConstraints certificate extension.
585 *) Support for policyConstraints certificate extension.
588 *) Support for policyMappings certificate extension.
591 *) Make sure the default DSA_METHOD implementation only uses its
592 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
593 and change its own handlers to be NULL so as to remove unnecessary
594 indirection. This lets alternative implementations fallback to the
595 default implementation more easily.
598 *) Support for directoryName in GeneralName related extensions
602 *) Make it possible to link applications using Makefile.shared.
603 Make that possible even when linking against static libraries!
606 *) Support for single pass processing for S/MIME signing. This now
607 means that S/MIME signing can be done from a pipe, in addition
608 cleartext signing (multipart/signed type) is effectively streaming
609 and the signed data does not need to be all held in memory.
611 This is done with a new flag PKCS7_STREAM. When this flag is set
612 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
613 is done after the data is output (and digests calculated) in
617 *) Add full support for -rpath/-R, both in shared libraries and
618 applications, at least on the platforms where it's known how
622 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
623 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
624 will now compute a table of multiples of the generator that
625 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
626 faster (notably in the case of a single point multiplication,
628 [Nils Larsch, Bodo Moeller]
630 *) IPv6 support for certificate extensions. The various extensions
631 which use the IP:a.b.c.d can now take IPv6 addresses using the
632 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
636 *) Added an ENGINE that implements RSA by performing private key
637 exponentiations with the GMP library. The conversions to and from
638 GMP's mpz_t format aren't optimised nor are any montgomery forms
639 cached, and on x86 it appears OpenSSL's own performance has caught up.
640 However there are likely to be other architectures where GMP could
641 provide a boost. This ENGINE is not built in by default, but it can be
642 specified at Configure time and should be accompanied by the necessary
643 linker additions, eg;
644 ./config -DOPENSSL_USE_GMP -lgmp
647 *) "openssl engine" will not display ENGINE/DSO load failure errors when
648 testing availability of engines with "-t" - the old behaviour is
649 produced by increasing the feature's verbosity with "-tt".
652 *) ECDSA routines: under certain error conditions uninitialized BN objects
653 could be freed. Solution: make sure initialization is performed early
654 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
658 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
659 and DH_METHOD (eg. by ENGINE implementations) to override the normal
660 software implementations. For DSA and DH, parameter generation can
661 also be overriden by providing the appropriate method callbacks.
664 *) Change the "progress" mechanism used in key-generation and
665 primality testing to functions that take a new BN_GENCB pointer in
666 place of callback/argument pairs. The new API functions have "_ex"
667 postfixes and the older functions are reimplemented as wrappers for
668 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
669 declarations of the old functions to help (graceful) attempts to
670 migrate to the new functions. Also, the new key-generation API
671 functions operate on a caller-supplied key-structure and return
672 success/failure rather than returning a key or NULL - this is to
673 help make "keygen" another member function of RSA_METHOD etc.
675 Example for using the new callback interface:
677 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
681 BN_GENCB_set(&my_cb, my_callback, my_arg);
683 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
684 /* For the meaning of a, b in calls to my_callback(), see the
685 * documentation of the function that calls the callback.
686 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
687 * my_callback should return 1 if it wants BN_is_prime_ex()
688 * to continue, or 0 to stop.
693 *) Change the ZLIB compression method to be stateful, and make it
694 available to TLS with the number defined in
695 draft-ietf-tls-compression-04.txt.
698 *) Add the ASN.1 structures and functions for CertificatePair, which
699 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
701 CertificatePair ::= SEQUENCE {
702 forward [0] Certificate OPTIONAL,
703 reverse [1] Certificate OPTIONAL,
704 -- at least one of the pair shall be present -- }
706 Also implement the PEM functions to read and write certificate
707 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
709 This needed to be defined, mostly for the sake of the LDAP
710 attribute crossCertificatePair, but may prove useful elsewhere as
714 *) Make it possible to inhibit symlinking of shared libraries in
715 Makefile.shared, for Cygwin's sake.
718 *) Extend the BIGNUM API by creating a function
719 void BN_set_negative(BIGNUM *a, int neg);
720 and a macro that behave like
721 int BN_is_negative(const BIGNUM *a);
723 to avoid the need to access 'a->neg' directly in applications.
726 *) Implement fast modular reduction for pseudo-Mersenne primes
727 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
728 EC_GROUP_new_curve_GFp() will now automatically use this
730 [Nils Larsch <nla@trustcenter.de>]
732 *) Add new lock type (CRYPTO_LOCK_BN).
735 *) Change the ENGINE framework to automatically load engines
736 dynamically from specific directories unless they could be
737 found to already be built in or loaded. Move all the
738 current engines except for the cryptodev one to a new
740 The engines in engines/ are built as shared libraries if
741 the "shared" options was given to ./Configure or ./config.
742 Otherwise, they are inserted in libcrypto.a.
743 /usr/local/ssl/engines is the default directory for dynamic
744 engines, but that can be overriden at configure time through
745 the usual use of --prefix and/or --openssldir, and at run
746 time with the environment variable OPENSSL_ENGINES.
747 [Geoff Thorpe and Richard Levitte]
749 *) Add Makefile.shared, a helper makefile to build shared
750 libraries. Addapt Makefile.org.
753 *) Add version info to Win32 DLLs.
754 [Peter 'Luna' Runestig" <peter@runestig.com>]
756 *) Add new 'medium level' PKCS#12 API. Certificates and keys
757 can be added using this API to created arbitrary PKCS#12
758 files while avoiding the low level API.
760 New options to PKCS12_create(), key or cert can be NULL and
761 will then be omitted from the output file. The encryption
762 algorithm NIDs can be set to -1 for no encryption, the mac
763 iteration count can be set to 0 to omit the mac.
765 Enhance pkcs12 utility by making the -nokeys and -nocerts
766 options work when creating a PKCS#12 file. New option -nomac
767 to omit the mac, NONE can be set for an encryption algorithm.
768 New code is modified to use the enhanced PKCS12_create()
769 instead of the low level API.
772 *) Extend ASN1 encoder to support indefinite length constructed
773 encoding. This can output sequences tags and octet strings in
774 this form. Modify pk7_asn1.c to support indefinite length
775 encoding. This is experimental and needs additional code to
776 be useful, such as an ASN1 bio and some enhanced streaming
779 Extend template encode functionality so that tagging is passed
780 down to the template encoder.
783 *) Let 'openssl req' fail if an argument to '-newkey' is not
784 recognized instead of using RSA as a default.
787 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
788 As these are not official, they are not included in "ALL";
789 the "ECCdraft" ciphersuite group alias can be used to select them.
790 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
792 *) Add ECDH engine support.
793 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
795 *) Add ECDH in new directory crypto/ecdh/.
796 [Douglas Stebila (Sun Microsystems Laboratories)]
798 *) Let BN_rand_range() abort with an error after 100 iterations
799 without success (which indicates a broken PRNG).
802 *) Change BN_mod_sqrt() so that it verifies that the input value
803 is really the square of the return value. (Previously,
804 BN_mod_sqrt would show GIGO behaviour.)
807 *) Add named elliptic curves over binary fields from X9.62, SECG,
808 and WAP/WTLS; add OIDs that were still missing.
810 [Sheueling Chang Shantz and Douglas Stebila
811 (Sun Microsystems Laboratories)]
813 *) Extend the EC library for elliptic curves over binary fields
814 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
817 EC_GF2m_simple_method
821 EC_GROUP_new_curve_GF2m
822 EC_GROUP_set_curve_GF2m
823 EC_GROUP_get_curve_GF2m
824 EC_POINT_set_affine_coordinates_GF2m
825 EC_POINT_get_affine_coordinates_GF2m
826 EC_POINT_set_compressed_coordinates_GF2m
828 Point compression for binary fields is disabled by default for
829 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
832 As binary polynomials are represented as BIGNUMs, various members
833 of the EC_GROUP and EC_POINT data structures can be shared
834 between the implementations for prime fields and binary fields;
835 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
836 are essentially identical to their ..._GFp counterparts.
837 (For simplicity, the '..._GFp' prefix has been dropped from
838 various internal method names.)
840 An internal 'field_div' method (similar to 'field_mul' and
841 'field_sqr') has been added; this is used only for binary fields.
843 [Sheueling Chang Shantz and Douglas Stebila
844 (Sun Microsystems Laboratories)]
846 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
847 through methods ('mul', 'precompute_mult').
849 The generic implementations (now internally called 'ec_wNAF_mul'
850 and 'ec_wNAF_precomputed_mult') remain the default if these
851 methods are undefined.
853 [Sheueling Chang Shantz and Douglas Stebila
854 (Sun Microsystems Laboratories)]
856 *) New function EC_GROUP_get_degree, which is defined through
857 EC_METHOD. For curves over prime fields, this returns the bit
858 length of the modulus.
860 [Sheueling Chang Shantz and Douglas Stebila
861 (Sun Microsystems Laboratories)]
863 *) New functions EC_GROUP_dup, EC_POINT_dup.
864 (These simply call ..._new and ..._copy).
866 [Sheueling Chang Shantz and Douglas Stebila
867 (Sun Microsystems Laboratories)]
869 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
870 Polynomials are represented as BIGNUMs (where the sign bit is not
871 used) in the following functions [macros]:
874 BN_GF2m_sub [= BN_GF2m_add]
875 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
876 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
877 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
879 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
880 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
881 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
882 BN_GF2m_cmp [= BN_ucmp]
884 (Note that only the 'mod' functions are actually for fields GF(2^m).
885 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
887 For some functions, an the irreducible polynomial defining a
888 field can be given as an 'unsigned int[]' with strictly
889 decreasing elements giving the indices of those bits that are set;
890 i.e., p[] represents the polynomial
891 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
893 p[0] > p[1] > ... > p[k] = 0.
894 This applies to the following functions:
899 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
900 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
903 BN_GF2m_mod_solve_quad_arr
907 Conversion can be performed by the following functions:
912 bntest.c has additional tests for binary polynomial arithmetic.
914 Two implementations for BN_GF2m_mod_div() are available.
915 The default algorithm simply uses BN_GF2m_mod_inv() and
916 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
917 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
918 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
920 [Sheueling Chang Shantz and Douglas Stebila
921 (Sun Microsystems Laboratories)]
923 *) Add new error code 'ERR_R_DISABLED' that can be used when some
924 functionality is disabled at compile-time.
925 [Douglas Stebila <douglas.stebila@sun.com>]
927 *) Change default behaviour of 'openssl asn1parse' so that more
928 information is visible when viewing, e.g., a certificate:
930 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
931 mode the content of non-printable OCTET STRINGs is output in a
932 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
933 avoid the appearance of a printable string.
934 [Nils Larsch <nla@trustcenter.de>]
936 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
938 EC_GROUP_set_asn1_flag()
939 EC_GROUP_get_asn1_flag()
940 EC_GROUP_set_point_conversion_form()
941 EC_GROUP_get_point_conversion_form()
942 These control ASN1 encoding details:
943 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
944 has been set to OPENSSL_EC_NAMED_CURVE.
945 - Points are encoded in uncompressed form by default; options for
946 asn1_for are as for point2oct, namely
947 POINT_CONVERSION_COMPRESSED
948 POINT_CONVERSION_UNCOMPRESSED
949 POINT_CONVERSION_HYBRID
951 Also add 'seed' and 'seed_len' members to EC_GROUP with access
955 EC_GROUP_get_seed_len()
956 This is used only for ASN1 purposes (so far).
957 [Nils Larsch <nla@trustcenter.de>]
959 *) Add 'field_type' member to EC_METHOD, which holds the NID
960 of the appropriate field type OID. The new function
961 EC_METHOD_get_field_type() returns this value.
962 [Nils Larsch <nla@trustcenter.de>]
969 providing useful interfaces to EC_POINT_point2oct() and
970 EC_POINT_oct2point().
971 [Nils Larsch <nla@trustcenter.de>]
973 *) Change internals of the EC library so that the functions
974 EC_GROUP_set_generator()
975 EC_GROUP_get_generator()
977 EC_GROUP_get_cofactor()
978 are implemented directly in crypto/ec/ec_lib.c and not dispatched
979 to methods, which would lead to unnecessary code duplication when
980 adding different types of curves.
981 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
983 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
984 arithmetic, and such that modified wNAFs are generated
985 (which avoid length expansion in many cases).
988 *) Add a function EC_GROUP_check_discriminant() (defined via
989 EC_METHOD) that verifies that the curve discriminant is non-zero.
991 Add a function EC_GROUP_check() that makes some sanity tests
992 on a EC_GROUP, its generator and order. This includes
993 EC_GROUP_check_discriminant().
994 [Nils Larsch <nla@trustcenter.de>]
996 *) Add ECDSA in new directory crypto/ecdsa/.
998 Add applications 'openssl ecparam' and 'openssl ecdsa'
999 (these are based on 'openssl dsaparam' and 'openssl dsa').
1001 ECDSA support is also included in various other files across the
1002 library. Most notably,
1003 - 'openssl req' now has a '-newkey ecdsa:file' option;
1004 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1005 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1006 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1007 them suitable for ECDSA where domain parameters must be
1008 extracted before the specific public key;
1009 - ECDSA engine support has been added.
1010 [Nils Larsch <nla@trustcenter.de>]
1012 *) Include some named elliptic curves, and add OIDs from X9.62,
1013 SECG, and WAP/WTLS. Each curve can be obtained from the new
1015 EC_GROUP_new_by_curve_name(),
1016 and the list of available named curves can be obtained with
1017 EC_get_builtin_curves().
1018 Also add a 'curve_name' member to EC_GROUP objects, which can be
1020 EC_GROUP_set_curve_name()
1021 EC_GROUP_get_curve_name()
1022 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1024 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1025 was actually never needed) and in BN_mul(). The removal in BN_mul()
1026 required a small change in bn_mul_part_recursive() and the addition
1027 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1028 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1029 bn_sub_words() and bn_add_words() except they take arrays with
1033 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1035 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1036 The value now differs depending on if you build for FIPS or not.
1037 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1038 safely run with a non-FIPSed libcrypto, as it may crash because of
1039 the difference induced by this change.
1042 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1044 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1045 (part of SSL_OP_ALL). This option used to disable the
1046 countermeasure against man-in-the-middle protocol-version
1047 rollback in the SSL 2.0 server implementation, which is a bad
1048 idea. (CVE-2005-2969)
1050 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1051 for Information Security, National Institute of Advanced Industrial
1052 Science and Technology [AIST], Japan)]
1054 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1055 mainly for FIPS compliance and not fully integrated at this stage.
1058 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1059 the exponentiation using a fixed-length exponent. (Otherwise,
1060 the information leaked through timing could expose the secret key
1061 after many signatures; cf. Bleichenbacher's attack on DSA with
1065 *) Make a new fixed-window mod_exp implementation the default for
1066 RSA, DSA, and DH private-key operations so that the sequence of
1067 squares and multiplies and the memory access pattern are
1068 independent of the particular secret key. This will mitigate
1069 cache-timing and potential related attacks.
1071 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1072 and this is automatically used by BN_mod_exp_mont() if the new flag
1073 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1074 will use this BN flag for private exponents unless the flag
1075 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1076 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1078 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1080 *) Change the client implementation for SSLv23_method() and
1081 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1082 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1083 (Previously, the SSL 2.0 backwards compatible Client Hello
1084 message format would be used even with SSL_OP_NO_SSLv2.)
1087 *) Add support for smime-type MIME parameter in S/MIME messages which some
1091 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1092 a threadsafe manner. Modify rsa code to use new function and add calls
1093 to dsa and dh code (which had race conditions before).
1096 *) Include the fixed error library code in the C error file definitions
1097 instead of fixing them up at runtime. This keeps the error code
1098 structures constant.
1101 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1103 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1106 *) Fixes for newer kerberos headers. NB: the casts are needed because
1107 the 'length' field is signed on one version and unsigned on another
1108 with no (?) obvious way to tell the difference, without these VC++
1109 complains. Also the "definition" of FAR (blank) is no longer included
1110 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1111 some needed definitions.
1114 *) Undo Cygwin change.
1117 *) Added support for proxy certificates according to RFC 3820.
1118 Because they may be a security thread to unaware applications,
1119 they must be explicitely allowed in run-time. See
1120 docs/HOWTO/proxy_certificates.txt for further information.
1123 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1125 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1126 server and client random values. Previously
1127 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1128 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1130 This change has negligible security impact because:
1132 1. Server and client random values still have 24 bytes of pseudo random
1135 2. Server and client random values are sent in the clear in the initial
1138 3. The master secret is derived using the premaster secret (48 bytes in
1139 size for static RSA ciphersuites) as well as client server and random
1142 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1145 [Stephen Henson, reported by UK NISCC]
1147 *) Use Windows randomness collection on Cygwin.
1150 *) Fix hang in EGD/PRNGD query when communication socket is closed
1151 prematurely by EGD/PRNGD.
1152 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1154 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1157 *) Back-port of selected performance improvements from development
1158 branch, as well as improved support for PowerPC platforms.
1161 *) Add lots of checks for memory allocation failure, error codes to indicate
1162 failure and freeing up memory if a failure occurs.
1163 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1165 *) Add new -passin argument to dgst.
1168 *) Perform some character comparisons of different types in X509_NAME_cmp:
1169 this is needed for some certificates that reencode DNs into UTF8Strings
1170 (in violation of RFC3280) and can't or wont issue name rollover
1174 *) Make an explicit check during certificate validation to see that
1175 the CA setting in each certificate on the chain is correct. As a
1176 side effect always do the following basic checks on extensions,
1177 not just when there's an associated purpose to the check:
1179 - if there is an unhandled critical extension (unless the user
1180 has chosen to ignore this fault)
1181 - if the path length has been exceeded (if one is set at all)
1182 - that certain extensions fit the associated purpose (if one has
1186 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1188 *) Avoid a race condition when CRLs are checked in a multi threaded
1189 environment. This would happen due to the reordering of the revoked
1190 entries during signature checking and serial number lookup. Now the
1191 encoding is cached and the serial number sort performed under a lock.
1192 Add new STACK function sk_is_sorted().
1195 *) Add Delta CRL to the extension code.
1198 *) Various fixes to s3_pkt.c so alerts are sent properly.
1199 [David Holmes <d.holmes@f5.com>]
1201 *) Reduce the chances of duplicate issuer name and serial numbers (in
1202 violation of RFC3280) using the OpenSSL certificate creation utilities.
1203 This is done by creating a random 64 bit value for the initial serial
1204 number when a serial number file is created or when a self signed
1205 certificate is created using 'openssl req -x509'. The initial serial
1206 number file is created using 'openssl x509 -next_serial' in CA.pl
1207 rather than being initialized to 1.
1210 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1212 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1213 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1214 [Joe Orton, Steve Henson]
1216 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1218 [Joe Orton, Steve Henson]
1220 *) Make it possible to have multiple active certificates with the same
1221 subject in the CA index file. This is done only if the keyword
1222 'unique_subject' is set to 'no' in the main CA section (default
1223 if 'CA_default') of the configuration file. The value is saved
1224 with the database itself in a separate index attribute file,
1225 named like the index file with '.attr' appended to the name.
1228 *) X509 verify fixes. Disable broken certificate workarounds when
1229 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1230 keyUsage extension present. Don't accept CRLs with unhandled critical
1231 extensions: since verify currently doesn't process CRL extensions this
1232 rejects a CRL with *any* critical extensions. Add new verify error codes
1236 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1237 A clarification of RFC2560 will require the use of OCTET STRINGs and
1238 some implementations cannot handle the current raw format. Since OpenSSL
1239 copies and compares OCSP nonces as opaque blobs without any attempt at
1240 parsing them this should not create any compatibility issues.
1243 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1244 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1245 this HMAC (and other) operations are several times slower than OpenSSL
1249 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1250 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1252 *) Use the correct content when signing type "other".
1255 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1257 *) Fix various bugs revealed by running the NISCC test suite:
1259 Stop out of bounds reads in the ASN1 code when presented with
1260 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1262 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1264 If verify callback ignores invalid public key errors don't try to check
1265 certificate signature with the NULL public key.
1269 *) New -ignore_err option in ocsp application to stop the server
1270 exiting on the first error in a request.
1273 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1274 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1278 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1279 extra data after the compression methods not only for TLS 1.0
1280 but also for SSL 3.0 (as required by the specification).
1281 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1283 *) Change X509_certificate_type() to mark the key as exported/exportable
1284 when it's 512 *bits* long, not 512 bytes.
1287 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1288 blocks during encryption.
1291 *) Various fixes to base64 BIO and non blocking I/O. On write
1292 flushes were not handled properly if the BIO retried. On read
1293 data was not being buffered properly and had various logic bugs.
1294 This also affects blocking I/O when the data being decoded is a
1298 *) Various S/MIME bugfixes and compatibility changes:
1299 output correct application/pkcs7 MIME type if
1300 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1301 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1302 of files as .eml work). Correctly handle very long lines in MIME
1306 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1308 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1309 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1310 a protocol version number mismatch like a decryption error
1311 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1314 *) Turn on RSA blinding by default in the default implementation
1315 to avoid a timing attack. Applications that don't want it can call
1316 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1317 They would be ill-advised to do so in most cases.
1318 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1320 *) Change RSA blinding code so that it works when the PRNG is not
1321 seeded (in this case, the secret RSA exponent is abused as
1322 an unpredictable seed -- if it is not unpredictable, there
1323 is no point in blinding anyway). Make RSA blinding thread-safe
1324 by remembering the creator's thread ID in rsa->blinding and
1325 having all other threads use local one-time blinding factors
1326 (this requires more computation than sharing rsa->blinding, but
1327 avoids excessive locking; and if an RSA object is not shared
1328 between threads, blinding will still be very fast).
1331 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1332 ENGINE as defaults for all supported algorithms irrespective of
1333 the 'flags' parameter. 'flags' is now honoured, so applications
1334 should make sure they are passing it correctly.
1337 *) Target "mingw" now allows native Windows code to be generated in
1338 the Cygwin environment as well as with the MinGW compiler.
1341 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1343 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1344 via timing by performing a MAC computation even if incorrrect
1345 block cipher padding has been found. This is a countermeasure
1346 against active attacks where the attacker has to distinguish
1347 between bad padding and a MAC verification error. (CVE-2003-0078)
1349 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1350 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1351 Martin Vuagnoux (EPFL, Ilion)]
1353 *) Make the no-err option work as intended. The intention with no-err
1354 is not to have the whole error stack handling routines removed from
1355 libcrypto, it's only intended to remove all the function name and
1356 reason texts, thereby removing some of the footprint that may not
1357 be interesting if those errors aren't displayed anyway.
1359 NOTE: it's still possible for any application or module to have it's
1360 own set of error texts inserted. The routines are there, just not
1361 used by default when no-err is given.
1364 *) Add support for FreeBSD on IA64.
1365 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1367 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1368 Kerberos function mit_des_cbc_cksum(). Before this change,
1369 the value returned by DES_cbc_cksum() was like the one from
1370 mit_des_cbc_cksum(), except the bytes were swapped.
1371 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1373 *) Allow an application to disable the automatic SSL chain building.
1374 Before this a rather primitive chain build was always performed in
1375 ssl3_output_cert_chain(): an application had no way to send the
1376 correct chain if the automatic operation produced an incorrect result.
1378 Now the chain builder is disabled if either:
1380 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1382 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1384 The reasoning behind this is that an application would not want the
1385 auto chain building to take place if extra chain certificates are
1386 present and it might also want a means of sending no additional
1387 certificates (for example the chain has two certificates and the
1391 *) Add the possibility to build without the ENGINE framework.
1392 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1394 *) Under Win32 gmtime() can return NULL: check return value in
1395 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1398 *) DSA routines: under certain error conditions uninitialized BN objects
1399 could be freed. Solution: make sure initialization is performed early
1400 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1401 Nils Larsch <nla@trustcenter.de> via PR#459)
1404 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1405 checked on reconnect on the client side, therefore session resumption
1406 could still fail with a "ssl session id is different" error. This
1407 behaviour is masked when SSL_OP_ALL is used due to
1408 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1409 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1410 followup to PR #377.
1413 *) IA-32 assembler support enhancements: unified ELF targets, support
1414 for SCO/Caldera platforms, fix for Cygwin shared build.
1417 *) Add support for FreeBSD on sparc64. As a consequence, support for
1418 FreeBSD on non-x86 processors is separate from x86 processors on
1419 the config script, much like the NetBSD support.
1420 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1422 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1424 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1427 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1428 code (06) was taken as the first octet of the session ID and the last
1429 octet was ignored consequently. As a result SSLv2 client side session
1430 caching could not have worked due to the session ID mismatch between
1432 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1436 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1437 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1441 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1442 seems that in spite of existing for more than a year, many application
1443 author have done nothing to provide the necessary callbacks, which
1444 means that this particular engine will not work properly anywhere.
1445 This is a very unfortunate situation which forces us, in the name
1446 of usability, to give the hw_ncipher.c a static lock, which is part
1448 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1449 appear in 0.9.8 or later. We EXPECT application authors to have
1450 dealt properly with this when 0.9.8 is released (unless we actually
1451 make such changes in the libcrypto locking code that changes will
1452 have to be made anyway).
1455 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1456 octets have been read, EOF or an error occurs. Without this change
1457 some truncated ASN1 structures will not produce an error.
1460 *) Disable Heimdal support, since it hasn't been fully implemented.
1461 Still give the possibility to force the use of Heimdal, but with
1462 warnings and a request that patches get sent to openssl-dev.
1465 *) Add the VC-CE target, introduce the WINCE sysname, and add
1466 INSTALL.WCE and appropriate conditionals to make it build.
1467 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1469 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1470 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1471 edit numbers of the version.
1472 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1474 *) Introduce safe string copy and catenation functions
1475 (BUF_strlcpy() and BUF_strlcat()).
1476 [Ben Laurie (CHATS) and Richard Levitte]
1478 *) Avoid using fixed-size buffers for one-line DNs.
1479 [Ben Laurie (CHATS)]
1481 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1482 resizing buffers containing secrets, and use where appropriate.
1483 [Ben Laurie (CHATS)]
1485 *) Avoid using fixed size buffers for configuration file location.
1486 [Ben Laurie (CHATS)]
1488 *) Avoid filename truncation for various CA files.
1489 [Ben Laurie (CHATS)]
1491 *) Use sizeof in preference to magic numbers.
1492 [Ben Laurie (CHATS)]
1494 *) Avoid filename truncation in cert requests.
1495 [Ben Laurie (CHATS)]
1497 *) Add assertions to check for (supposedly impossible) buffer
1499 [Ben Laurie (CHATS)]
1501 *) Don't cache truncated DNS entries in the local cache (this could
1502 potentially lead to a spoofing attack).
1503 [Ben Laurie (CHATS)]
1505 *) Fix various buffers to be large enough for hex/decimal
1506 representations in a platform independent manner.
1507 [Ben Laurie (CHATS)]
1509 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1510 resizing buffers containing secrets, and use where appropriate.
1511 [Ben Laurie (CHATS)]
1513 *) Add BIO_indent() to avoid much slightly worrying code to do
1515 [Ben Laurie (CHATS)]
1517 *) Convert sprintf()/BIO_puts() to BIO_printf().
1518 [Ben Laurie (CHATS)]
1520 *) buffer_gets() could terminate with the buffer only half
1522 [Ben Laurie (CHATS)]
1524 *) Add assertions to prevent user-supplied crypto functions from
1525 overflowing internal buffers by having large block sizes, etc.
1526 [Ben Laurie (CHATS)]
1528 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1530 [Ben Laurie (CHATS)]
1532 *) Eliminate unused copy of key in RC4.
1533 [Ben Laurie (CHATS)]
1535 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1536 [Ben Laurie (CHATS)]
1538 *) Fix off-by-one error in EGD path.
1539 [Ben Laurie (CHATS)]
1541 *) If RANDFILE path is too long, ignore instead of truncating.
1542 [Ben Laurie (CHATS)]
1544 *) Eliminate unused and incorrectly sized X.509 structure
1546 [Ben Laurie (CHATS)]
1548 *) Eliminate unused and dangerous function knumber().
1549 [Ben Laurie (CHATS)]
1551 *) Eliminate unused and dangerous structure, KSSL_ERR.
1552 [Ben Laurie (CHATS)]
1554 *) Protect against overlong session ID context length in an encoded
1555 session object. Since these are local, this does not appear to be
1557 [Ben Laurie (CHATS)]
1559 *) Change from security patch (see 0.9.6e below) that did not affect
1560 the 0.9.6 release series:
1562 Remote buffer overflow in SSL3 protocol - an attacker could
1563 supply an oversized master key in Kerberos-enabled versions.
1565 [Ben Laurie (CHATS)]
1567 *) Change the SSL kerb5 codes to match RFC 2712.
1570 *) Make -nameopt work fully for req and add -reqopt switch.
1571 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1573 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1574 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1576 *) Make sure tests can be performed even if the corresponding algorithms
1577 have been removed entirely. This was also the last step to make
1578 OpenSSL compilable with DJGPP under all reasonable conditions.
1579 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1581 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1582 to allow version independent disabling of normally unselected ciphers,
1583 which may be activated as a side-effect of selecting a single cipher.
1585 (E.g., cipher list string "RSA" enables ciphersuites that are left
1586 out of "ALL" because they do not provide symmetric encryption.
1587 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1588 [Lutz Jaenicke, Bodo Moeller]
1590 *) Add appropriate support for separate platform-dependent build
1591 directories. The recommended way to make a platform-dependent
1592 build directory is the following (tested on Linux), maybe with
1595 # Place yourself outside of the OpenSSL source tree. In
1596 # this example, the environment variable OPENSSL_SOURCE
1597 # is assumed to contain the absolute OpenSSL source directory.
1598 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1599 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1600 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1601 mkdir -p `dirname $F`
1602 ln -s $OPENSSL_SOURCE/$F $F
1605 To be absolutely sure not to disturb the source tree, a "make clean"
1606 is a good thing. If it isn't successfull, don't worry about it,
1607 it probably means the source directory is very clean.
1610 *) Make sure any ENGINE control commands make local copies of string
1611 pointers passed to them whenever necessary. Otherwise it is possible
1612 the caller may have overwritten (or deallocated) the original string
1613 data when a later ENGINE operation tries to use the stored values.
1614 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1616 *) Improve diagnostics in file reading and command-line digests.
1617 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1619 *) Add AES modes CFB and OFB to the object database. Correct an
1620 error in AES-CFB decryption.
1623 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1624 allows existing EVP_CIPHER_CTX structures to be reused after
1625 calling EVP_*Final(). This behaviour is used by encryption
1626 BIOs and some applications. This has the side effect that
1627 applications must explicitly clean up cipher contexts with
1628 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1631 *) Check the values of dna and dnb in bn_mul_recursive before calling
1632 bn_mul_comba (a non zero value means the a or b arrays do not contain
1633 n2 elements) and fallback to bn_mul_normal if either is not zero.
1636 *) Fix escaping of non-ASCII characters when using the -subj option
1637 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1640 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1641 form for "surname", serialNumber has no short form.
1642 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1643 therefore remove "mail" short name for "internet 7".
1644 The OID for unique identifiers in X509 certificates is
1645 x500UniqueIdentifier, not uniqueIdentifier.
1646 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1649 *) Add an "init" command to the ENGINE config module and auto initialize
1650 ENGINEs. Without any "init" command the ENGINE will be initialized
1651 after all ctrl commands have been executed on it. If init=1 the
1652 ENGINE is initailized at that point (ctrls before that point are run
1653 on the uninitialized ENGINE and after on the initialized one). If
1654 init=0 then the ENGINE will not be iniatialized at all.
1657 *) Fix the 'app_verify_callback' interface so that the user-defined
1658 argument is actually passed to the callback: In the
1659 SSL_CTX_set_cert_verify_callback() prototype, the callback
1660 declaration has been changed from
1663 int (*cb)(X509_STORE_CTX *,void *);
1664 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1665 i=s->ctx->app_verify_callback(&ctx)
1666 has been changed into
1667 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1669 To update applications using SSL_CTX_set_cert_verify_callback(),
1670 a dummy argument can be added to their callback functions.
1671 [D. K. Smetters <smetters@parc.xerox.com>]
1673 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1674 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1676 *) Add and OPENSSL_LOAD_CONF define which will cause
1677 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1678 This allows older applications to transparently support certain
1679 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1680 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1681 load the config file and OPENSSL_add_all_algorithms_conf() which will
1682 always load it have also been added.
1685 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1686 Adjust NIDs and EVP layer.
1687 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1689 *) Config modules support in openssl utility.
1691 Most commands now load modules from the config file,
1692 though in a few (such as version) this isn't done
1693 because it couldn't be used for anything.
1695 In the case of ca and req the config file used is
1696 the same as the utility itself: that is the -config
1697 command line option can be used to specify an
1701 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1702 use "openssl_conf" if filename is NULL use default openssl config file.
1705 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1706 config section name. Add a new flag to tolerate a missing config file
1707 and move code to CONF_modules_load_file().
1710 *) Support for crypto accelerator cards from Accelerated Encryption
1711 Processing, www.aep.ie. (Use engine 'aep')
1712 The support was copied from 0.9.6c [engine] and adapted/corrected
1713 to work with the new engine framework.
1714 [AEP Inc. and Richard Levitte]
1716 *) Support for SureWare crypto accelerator cards from Baltimore
1717 Technologies. (Use engine 'sureware')
1718 The support was copied from 0.9.6c [engine] and adapted
1719 to work with the new engine framework.
1722 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1723 make the newer ENGINE framework commands for the CHIL engine work.
1724 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1726 *) Make it possible to produce shared libraries on ReliantUNIX.
1727 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1729 *) Add the configuration target debug-linux-ppro.
1730 Make 'openssl rsa' use the general key loading routines
1731 implemented in apps.c, and make those routines able to
1732 handle the key format FORMAT_NETSCAPE and the variant
1734 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1736 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1737 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1739 *) Add -keyform to rsautl, and document -engine.
1740 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1742 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1743 BIO_R_NO_SUCH_FILE error code rather than the generic
1744 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1747 *) Add new functions
1749 ERR_peek_last_error_line
1750 ERR_peek_last_error_line_data.
1751 These are similar to
1754 ERR_peek_error_line_data,
1755 but report on the latest error recorded rather than the first one
1756 still in the error queue.
1757 [Ben Laurie, Bodo Moeller]
1759 *) default_algorithms option in ENGINE config module. This allows things
1761 default_algorithms = ALL
1762 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1765 *) Prelminary ENGINE config module.
1768 *) New experimental application configuration code.
1771 *) Change the AES code to follow the same name structure as all other
1772 symmetric ciphers, and behave the same way. Move everything to
1773 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1774 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1776 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1777 [Ben Laurie and Theo de Raadt]
1779 *) Add option to output public keys in req command.
1780 [Massimiliano Pala madwolf@openca.org]
1782 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1783 (up to about 10% better than before for P-192 and P-224).
1786 *) New functions/macros
1788 SSL_CTX_set_msg_callback(ctx, cb)
1789 SSL_CTX_set_msg_callback_arg(ctx, arg)
1790 SSL_set_msg_callback(ssl, cb)
1791 SSL_set_msg_callback_arg(ssl, arg)
1793 to request calling a callback function
1795 void cb(int write_p, int version, int content_type,
1796 const void *buf, size_t len, SSL *ssl, void *arg)
1798 whenever a protocol message has been completely received
1799 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1800 protocol version according to which the SSL library interprets
1801 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1802 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1803 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1804 specification (change_cipher_spec(20), alert(21), handshake(22)).
1805 'buf' and 'len' point to the actual message, 'ssl' to the
1806 SSL object, and 'arg' is the application-defined value set by
1807 SSL[_CTX]_set_msg_callback_arg().
1809 'openssl s_client' and 'openssl s_server' have new '-msg' options
1810 to enable a callback that displays all protocol messages.
1813 *) Change the shared library support so shared libraries are built as
1814 soon as the corresponding static library is finished, and thereby get
1815 openssl and the test programs linked against the shared library.
1816 This still only happens when the keyword "shard" has been given to
1817 the configuration scripts.
1819 NOTE: shared library support is still an experimental thing, and
1820 backward binary compatibility is still not guaranteed.
1821 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1823 *) Add support for Subject Information Access extension.
1824 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1826 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1827 additional bytes when new memory had to be allocated, not just
1828 when reusing an existing buffer.
1831 *) New command line and configuration option 'utf8' for the req command.
1832 This allows field values to be specified as UTF8 strings.
1835 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1836 runs for the former and machine-readable output for the latter.
1839 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1840 of the e-mail address in the DN (i.e., it will go into a certificate
1841 extension only). The new configuration file option 'email_in_dn = no'
1842 has the same effect.
1843 [Massimiliano Pala madwolf@openca.org]
1845 *) Change all functions with names starting with des_ to be starting
1846 with DES_ instead. Add wrappers that are compatible with libdes,
1847 but are named _ossl_old_des_*. Finally, add macros that map the
1848 des_* symbols to the corresponding _ossl_old_des_* if libdes
1849 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1850 desired, the des_* symbols will be mapped to DES_*, with one
1853 Since we provide two compatibility mappings, the user needs to
1854 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1855 compatibility is desired. The default (i.e., when that macro
1856 isn't defined) is OpenSSL 0.9.6c compatibility.
1858 There are also macros that enable and disable the support of old
1859 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1860 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1861 are defined, the default will apply: to support the old des routines.
1863 In either case, one must include openssl/des.h to get the correct
1864 definitions. Do not try to just include openssl/des_old.h, that
1867 NOTE: This is a major break of an old API into a new one. Software
1868 authors are encouraged to switch to the DES_ style functions. Some
1869 time in the future, des_old.h and the libdes compatibility functions
1870 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1871 default), and then completely removed.
1874 *) Test for certificates which contain unsupported critical extensions.
1875 If such a certificate is found during a verify operation it is
1876 rejected by default: this behaviour can be overridden by either
1877 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1878 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1879 X509_supported_extension() has also been added which returns 1 if a
1880 particular extension is supported.
1883 *) Modify the behaviour of EVP cipher functions in similar way to digests
1884 to retain compatibility with existing code.
1887 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1888 compatibility with existing code. In particular the 'ctx' parameter does
1889 not have to be to be initialized before the call to EVP_DigestInit() and
1890 it is tidied up after a call to EVP_DigestFinal(). New function
1891 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1892 EVP_MD_CTX_copy() changed to not require the destination to be
1893 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1894 requires the destination to be valid.
1896 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1897 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1900 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1901 so that complete 'Handshake' protocol structures are kept in memory
1902 instead of overwriting 'msg_type' and 'length' with 'body' data.
1905 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1906 [Massimo Santin via Richard Levitte]
1908 *) Major restructuring to the underlying ENGINE code. This includes
1909 reduction of linker bloat, separation of pure "ENGINE" manipulation
1910 (initialisation, etc) from functionality dealing with implementations
1911 of specific crypto iterfaces. This change also introduces integrated
1912 support for symmetric ciphers and digest implementations - so ENGINEs
1913 can now accelerate these by providing EVP_CIPHER and EVP_MD
1914 implementations of their own. This is detailed in crypto/engine/README
1915 as it couldn't be adequately described here. However, there are a few
1916 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1917 were changed in the original introduction of ENGINE code have now
1918 reverted back - the hooking from this code to ENGINE is now a good
1919 deal more passive and at run-time, operations deal directly with
1920 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1921 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1922 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1923 they were not being used by the framework as there is no concept of a
1924 BIGNUM_METHOD and they could not be generalised to the new
1925 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1926 ENGINE_cpy() has been removed as it cannot be consistently defined in
1930 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1933 *) Change mkdef.pl to sort symbols that get the same entry number,
1934 and make sure the automatically generated functions ERR_load_*
1935 become part of libeay.num as well.
1938 *) New function SSL_renegotiate_pending(). This returns true once
1939 renegotiation has been requested (either SSL_renegotiate() call
1940 or HelloRequest/ClientHello receveived from the peer) and becomes
1941 false once a handshake has been completed.
1942 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1943 sends a HelloRequest, but does not ensure that a handshake takes
1944 place. SSL_renegotiate_pending() is useful for checking if the
1945 client has followed the request.)
1948 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1949 By default, clients may request session resumption even during
1950 renegotiation (if session ID contexts permit); with this option,
1951 session resumption is possible only in the first handshake.
1953 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1954 more bits available for options that should not be part of
1955 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1958 *) Add some demos for certificate and certificate request creation.
1961 *) Make maximum certificate chain size accepted from the peer application
1962 settable (SSL*_get/set_max_cert_list()), as proposed by
1963 "Douglas E. Engert" <deengert@anl.gov>.
1966 *) Add support for shared libraries for Unixware-7
1967 (Boyd Lynn Gerber <gerberb@zenez.com>).
1970 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1971 be done prior to destruction. Use this to unload error strings from
1972 ENGINEs that load their own error strings. NB: This adds two new API
1973 functions to "get" and "set" this destroy handler in an ENGINE.
1976 *) Alter all existing ENGINE implementations (except "openssl" and
1977 "openbsd") to dynamically instantiate their own error strings. This
1978 makes them more flexible to be built both as statically-linked ENGINEs
1979 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1980 Also, add stub code to each that makes building them as self-contained
1981 shared-libraries easier (see README.ENGINE).
1984 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1985 implementations into applications that are completely implemented in
1986 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1987 commands that can be used to configure what shared-library to load and
1988 to control aspects of the way it is handled. Also, made an update to
1989 the README.ENGINE file that brings its information up-to-date and
1990 provides some information and instructions on the "dynamic" ENGINE
1991 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1994 *) Make it possible to unload ranges of ERR strings with a new
1995 "ERR_unload_strings" function.
1998 *) Add a copy() function to EVP_MD.
2001 *) Make EVP_MD routines take a context pointer instead of just the
2002 md_data void pointer.
2005 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2006 that the digest can only process a single chunk of data
2007 (typically because it is provided by a piece of
2008 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2009 is only going to provide a single chunk of data, and hence the
2010 framework needn't accumulate the data for oneshot drivers.
2013 *) As with "ERR", make it possible to replace the underlying "ex_data"
2014 functions. This change also alters the storage and management of global
2015 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2016 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2017 index counters. The API functions that use this state have been changed
2018 to take a "class_index" rather than pointers to the class's local STACK
2019 and counter, and there is now an API function to dynamically create new
2020 classes. This centralisation allows us to (a) plug a lot of the
2021 thread-safety problems that existed, and (b) makes it possible to clean
2022 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2023 such data would previously have always leaked in application code and
2024 workarounds were in place to make the memory debugging turn a blind eye
2025 to it. Application code that doesn't use this new function will still
2026 leak as before, but their memory debugging output will announce it now
2027 rather than letting it slide.
2029 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2030 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2031 has a return value to indicate success or failure.
2034 *) Make it possible to replace the underlying "ERR" functions such that the
2035 global state (2 LHASH tables and 2 locks) is only used by the "default"
2036 implementation. This change also adds two functions to "get" and "set"
2037 the implementation prior to it being automatically set the first time
2038 any other ERR function takes place. Ie. an application can call "get",
2039 pass the return value to a module it has just loaded, and that module
2040 can call its own "set" function using that value. This means the
2041 module's "ERR" operations will use (and modify) the error state in the
2042 application and not in its own statically linked copy of OpenSSL code.
2045 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2046 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2047 the operation, and provides a more encapsulated way for external code
2048 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2049 to use these functions rather than manually incrementing the counts.
2051 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2054 *) Add EVP test program.
2057 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2060 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2061 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2062 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2063 These allow a CRL to be built without having to access X509_CRL fields
2064 directly. Modify 'ca' application to use new functions.
2067 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2068 bug workarounds. Rollback attack detection is a security feature.
2069 The problem will only arise on OpenSSL servers when TLSv1 is not
2070 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2071 Software authors not wanting to support TLSv1 will have special reasons
2072 for their choice and can explicitly enable this option.
2073 [Bodo Moeller, Lutz Jaenicke]
2075 *) Rationalise EVP so it can be extended: don't include a union of
2076 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2077 (similar to those existing for EVP_CIPHER_CTX).
2082 EVP_MD_CTX_init(&md); /* new function call */
2083 EVP_DigestInit(&md, EVP_sha1());
2084 EVP_DigestUpdate(&md, in, len);
2085 EVP_DigestFinal(&md, out, NULL);
2086 EVP_MD_CTX_cleanup(&md); /* new function call */
2090 *) Make DES key schedule conform to the usual scheme, as well as
2091 correcting its structure. This means that calls to DES functions
2092 now have to pass a pointer to a des_key_schedule instead of a
2093 plain des_key_schedule (which was actually always a pointer
2096 des_key_schedule ks;
2098 des_set_key_checked(..., &ks);
2099 des_ncbc_encrypt(..., &ks, ...);
2101 (Note that a later change renames 'des_...' into 'DES_...'.)
2104 *) Initial reduction of linker bloat: the use of some functions, such as
2105 PEM causes large amounts of unused functions to be linked in due to
2106 poor organisation. For example pem_all.c contains every PEM function
2107 which has a knock on effect of linking in large amounts of (unused)
2108 ASN1 code. Grouping together similar functions and splitting unrelated
2109 functions prevents this.
2112 *) Cleanup of EVP macros.
2115 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2116 correct _ecb suffix.
2119 *) Add initial OCSP responder support to ocsp application. The
2120 revocation information is handled using the text based index
2121 use by the ca application. The responder can either handle
2122 requests generated internally, supplied in files (for example
2123 via a CGI script) or using an internal minimal server.
2126 *) Add configuration choices to get zlib compression for TLS.
2129 *) Changes to Kerberos SSL for RFC 2712 compliance:
2130 1. Implemented real KerberosWrapper, instead of just using
2131 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2132 2. Implemented optional authenticator field of KerberosWrapper.
2134 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2135 and authenticator structs; see crypto/krb5/.
2137 Generalized Kerberos calls to support multiple Kerberos libraries.
2138 [Vern Staats <staatsvr@asc.hpc.mil>,
2139 Jeffrey Altman <jaltman@columbia.edu>
2140 via Richard Levitte]
2142 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2143 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2144 values for each of the key sizes rather than having just
2145 parameters (and 'speed' generating keys each time).
2148 *) Speed up EVP routines.
2151 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2152 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2153 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2154 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2156 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2157 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2158 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2161 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2163 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2166 *) Added the OS2-EMX target.
2167 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2169 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2170 to support NCONF routines in extension code. New function CONF_set_nconf()
2171 to allow functions which take an NCONF to also handle the old LHASH
2172 structure: this means that the old CONF compatible routines can be
2173 retained (in particular wrt extensions) without having to duplicate the
2174 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2177 *) Enhance the general user interface with mechanisms for inner control
2178 and with possibilities to have yes/no kind of prompts.
2181 *) Change all calls to low level digest routines in the library and
2182 applications to use EVP. Add missing calls to HMAC_cleanup() and
2183 don't assume HMAC_CTX can be copied using memcpy().
2184 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2186 *) Add the possibility to control engines through control names but with
2187 arbitrary arguments instead of just a string.
2188 Change the key loaders to take a UI_METHOD instead of a callback
2189 function pointer. NOTE: this breaks binary compatibility with earlier
2190 versions of OpenSSL [engine].
2191 Adapt the nCipher code for these new conditions and add a card insertion
2195 *) Enhance the general user interface with mechanisms to better support
2196 dialog box interfaces, application-defined prompts, the possibility
2197 to use defaults (for example default passwords from somewhere else)
2198 and interrupts/cancellations.
2201 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2202 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2205 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2206 tidy up some unnecessarily weird code in 'sk_new()').
2207 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2209 *) Change the key loading routines for ENGINEs to use the same kind
2210 callback (pem_password_cb) as all other routines that need this
2214 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2215 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2216 than this minimum value is recommended.
2219 *) New random seeder for OpenVMS, using the system process statistics
2220 that are easily reachable.
2223 *) Windows apparently can't transparently handle global
2224 variables defined in DLLs. Initialisations such as:
2226 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2228 wont compile. This is used by the any applications that need to
2229 declare their own ASN1 modules. This was fixed by adding the option
2230 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2231 needed for static libraries under Win32.
2234 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2235 setting of purpose and trust fields. New X509_STORE trust and
2236 purpose functions and tidy up setting in other SSL functions.
2239 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2240 structure. These are inherited by X509_STORE_CTX when it is
2241 initialised. This allows various defaults to be set in the
2242 X509_STORE structure (such as flags for CRL checking and custom
2243 purpose or trust settings) for functions which only use X509_STORE_CTX
2244 internally such as S/MIME.
2246 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2247 trust settings if they are not set in X509_STORE. This allows X509_STORE
2248 purposes and trust (in S/MIME for example) to override any set by default.
2250 Add command line options for CRL checking to smime, s_client and s_server
2254 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2255 are set then the CRL is looked up in the X509_STORE structure and
2256 its validity and signature checked, then if the certificate is found
2257 in the CRL the verify fails with a revoked error.
2259 Various new CRL related callbacks added to X509_STORE_CTX structure.
2261 Command line options added to 'verify' application to support this.
2263 This needs some additional work, such as being able to handle multiple
2264 CRLs with different times, extension based lookup (rather than just
2265 by subject name) and ultimately more complete V2 CRL extension
2269 *) Add a general user interface API (crypto/ui/). This is designed
2270 to replace things like des_read_password and friends (backward
2271 compatibility functions using this new API are provided).
2272 The purpose is to remove prompting functions from the DES code
2273 section as well as provide for prompting through dialog boxes in
2274 a window system and the like.
2277 *) Add "ex_data" support to ENGINE so implementations can add state at a
2278 per-structure level rather than having to store it globally.
2281 *) Make it possible for ENGINE structures to be copied when retrieved by
2282 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2283 This causes the "original" ENGINE structure to act like a template,
2284 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2285 operational state can be localised to each ENGINE structure, despite the
2286 fact they all share the same "methods". New ENGINE structures returned in
2287 this case have no functional references and the return value is the single
2288 structural reference. This matches the single structural reference returned
2289 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2293 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2294 needs to match any other type at all we need to manually clear the
2298 *) Changes to the "openssl engine" utility to include;
2299 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2300 about an ENGINE's available control commands.
2301 - executing control commands from command line arguments using the
2302 '-pre' and '-post' switches. '-post' is only used if '-t' is
2303 specified and the ENGINE is successfully initialised. The syntax for
2304 the individual commands are colon-separated, for example;
2305 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2308 *) New dynamic control command support for ENGINEs. ENGINEs can now
2309 declare their own commands (numbers), names (strings), descriptions,
2310 and input types for run-time discovery by calling applications. A
2311 subset of these commands are implicitly classed as "executable"
2312 depending on their input type, and only these can be invoked through
2313 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2314 can be based on user input, config files, etc). The distinction is
2315 that "executable" commands cannot return anything other than a boolean
2316 result and can only support numeric or string input, whereas some
2317 discoverable commands may only be for direct use through
2318 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2319 pointers, or other custom uses. The "executable" commands are to
2320 support parameterisations of ENGINE behaviour that can be
2321 unambiguously defined by ENGINEs and used consistently across any
2322 OpenSSL-based application. Commands have been added to all the
2323 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2324 control over shared-library paths without source code alterations.
2327 *) Changed all ENGINE implementations to dynamically allocate their
2328 ENGINEs rather than declaring them statically. Apart from this being
2329 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2330 this also allows the implementations to compile without using the
2331 internal engine_int.h header.
2334 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2335 'const' value. Any code that should be able to modify a RAND_METHOD
2336 should already have non-const pointers to it (ie. they should only
2337 modify their own ones).
2340 *) Made a variety of little tweaks to the ENGINE code.
2341 - "atalla" and "ubsec" string definitions were moved from header files
2342 to C code. "nuron" string definitions were placed in variables
2343 rather than hard-coded - allowing parameterisation of these values
2344 later on via ctrl() commands.
2345 - Removed unused "#if 0"'d code.
2346 - Fixed engine list iteration code so it uses ENGINE_free() to release
2347 structural references.
2348 - Constified the RAND_METHOD element of ENGINE structures.
2349 - Constified various get/set functions as appropriate and added
2350 missing functions (including a catch-all ENGINE_cpy that duplicates
2351 all ENGINE values onto a new ENGINE except reference counts/state).
2352 - Removed NULL parameter checks in get/set functions. Setting a method
2353 or function to NULL is a way of cancelling out a previously set
2354 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2355 and doesn't justify the extra error symbols and code.
2356 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2357 flags from engine_int.h to engine.h.
2358 - Changed prototypes for ENGINE handler functions (init(), finish(),
2359 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2362 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2363 to the algorithm using long division. The binary algorithm can be
2364 used only if the modulus is odd. On 32-bit systems, it is faster
2365 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2366 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2367 up to 450 bits. In 64-bit environments, the binary algorithm
2368 appears to be advantageous for much longer moduli; here we use it
2369 for moduli up to 2048 bits.
2372 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2373 could not support the combine flag in choice fields.
2376 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2377 extensions from a certificate request to the certificate.
2380 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2381 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2382 file: this allows the display of the certificate about to be
2383 signed to be customised, to allow certain fields to be included
2384 or excluded and extension details. The old system didn't display
2385 multicharacter strings properly, omitted fields not in the policy
2386 and couldn't display additional details such as extensions.
2389 *) Function EC_POINTs_mul for multiple scalar multiplication
2390 of an arbitrary number of elliptic curve points
2391 \sum scalars[i]*points[i],
2392 optionally including the generator defined for the EC_GROUP:
2393 scalar*generator + \sum scalars[i]*points[i].
2395 EC_POINT_mul is a simple wrapper function for the typical case
2396 that the point list has just one item (besides the optional
2400 *) First EC_METHODs for curves over GF(p):
2402 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2403 operations and provides various method functions that can also
2404 operate with faster implementations of modular arithmetic.
2406 EC_GFp_mont_method() reuses most functions that are part of
2407 EC_GFp_simple_method, but uses Montgomery arithmetic.
2409 [Bodo Moeller; point addition and point doubling
2410 implementation directly derived from source code provided by
2411 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2413 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2414 crypto/ec/ec_lib.c):
2416 Curves are EC_GROUP objects (with an optional group generator)
2417 based on EC_METHODs that are built into the library.
2419 Points are EC_POINT objects based on EC_GROUP objects.
2421 Most of the framework would be able to handle curves over arbitrary
2422 finite fields, but as there are no obvious types for fields other
2423 than GF(p), some functions are limited to that for now.
2426 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2427 that the file contains a complete HTTP response.
2430 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2431 change the def and num file printf format specifier from "%-40sXXX"
2432 to "%-39s XXX". The latter will always guarantee a space after the
2433 field while the former will cause them to run together if the field
2434 is 40 of more characters long.
2437 *) Constify the cipher and digest 'method' functions and structures
2438 and modify related functions to take constant EVP_MD and EVP_CIPHER
2442 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2443 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2446 *) Modify EVP_Digest*() routines so they now return values. Although the
2447 internal software routines can never fail additional hardware versions
2451 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2453 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2454 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2457 ERR_R_NESTED_ASN1_ERROR
2459 ERR_R_MISSING_ASN1_EOS
2460 were 4 .. 9, conflicting with
2461 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2463 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2464 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2466 Add new error code 'ERR_R_INTERNAL_ERROR'.
2469 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2473 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2474 sets the subject name for a new request or supersedes the
2475 subject name in a given request. Formats that can be parsed are
2476 'CN=Some Name, OU=myOU, C=IT'
2478 'CN=Some Name/OU=myOU/C=IT'.
2480 Add options '-batch' and '-verbose' to 'openssl req'.
2481 [Massimiliano Pala <madwolf@hackmasters.net>]
2483 *) Introduce the possibility to access global variables through
2484 functions on platform were that's the best way to handle exporting
2485 global variables in shared libraries. To enable this functionality,
2486 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2487 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2488 is normally done by Configure or something similar).
2490 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2491 in the source file (foo.c) like this:
2493 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2494 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2496 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2497 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2499 OPENSSL_DECLARE_GLOBAL(int,foo);
2500 #define foo OPENSSL_GLOBAL_REF(foo)
2501 OPENSSL_DECLARE_GLOBAL(double,bar);
2502 #define bar OPENSSL_GLOBAL_REF(bar)
2504 The #defines are very important, and therefore so is including the
2505 header file everywhere where the defined globals are used.
2507 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2508 of ASN.1 items, but that structure is a bit different.
2510 The largest change is in util/mkdef.pl which has been enhanced with
2511 better and easier to understand logic to choose which symbols should
2512 go into the Windows .def files as well as a number of fixes and code
2513 cleanup (among others, algorithm keywords are now sorted
2514 lexicographically to avoid constant rewrites).
2517 *) In BN_div() keep a copy of the sign of 'num' before writing the
2518 result to 'rm' because if rm==num the value will be overwritten
2519 and produce the wrong result if 'num' is negative: this caused
2520 problems with BN_mod() and BN_nnmod().
2523 *) Function OCSP_request_verify(). This checks the signature on an
2524 OCSP request and verifies the signer certificate. The signer
2525 certificate is just checked for a generic purpose and OCSP request
2529 *) Add OCSP_check_validity() function to check the validity of OCSP
2530 responses. OCSP responses are prepared in real time and may only
2531 be a few seconds old. Simply checking that the current time lies
2532 between thisUpdate and nextUpdate max reject otherwise valid responses
2533 caused by either OCSP responder or client clock inaccuracy. Instead
2534 we allow thisUpdate and nextUpdate to fall within a certain period of
2535 the current time. The age of the response can also optionally be
2536 checked. Two new options -validity_period and -status_age added to
2540 *) If signature or public key algorithm is unrecognized print out its
2541 OID rather that just UNKNOWN.
2544 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2545 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2546 ID to be generated from the issuer certificate alone which can then be
2547 passed to OCSP_id_issuer_cmp().
2550 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2551 ASN1 modules to export functions returning ASN1_ITEM pointers
2552 instead of the ASN1_ITEM structures themselves. This adds several
2553 new macros which allow the underlying ASN1 function/structure to
2554 be accessed transparently. As a result code should not use ASN1_ITEM
2555 references directly (such as &X509_it) but instead use the relevant
2556 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2557 use of the new ASN1 code on platforms where exporting structures
2558 is problematical (for example in shared libraries) but exporting
2559 functions returning pointers to structures is not.
2562 *) Add support for overriding the generation of SSL/TLS session IDs.
2563 These callbacks can be registered either in an SSL_CTX or per SSL.
2564 The purpose of this is to allow applications to control, if they wish,
2565 the arbitrary values chosen for use as session IDs, particularly as it
2566 can be useful for session caching in multiple-server environments. A
2567 command-line switch for testing this (and any client code that wishes
2568 to use such a feature) has been added to "s_server".
2569 [Geoff Thorpe, Lutz Jaenicke]
2571 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2572 of the form '#if defined(...) || defined(...) || ...' and
2573 '#if !defined(...) && !defined(...) && ...'. This also avoids
2574 the growing number of special cases it was previously handling.
2577 *) Make all configuration macros available for application by making
2578 sure they are available in opensslconf.h, by giving them names starting
2579 with "OPENSSL_" to avoid conflicts with other packages and by making
2580 sure e_os2.h will cover all platform-specific cases together with
2582 Additionally, it is now possible to define configuration/platform-
2583 specific names (called "system identities"). In the C code, these
2584 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2585 macro with the name beginning with "OPENSSL_SYS_", which is determined
2586 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2590 *) New option -set_serial to 'req' and 'x509' this allows the serial
2591 number to use to be specified on the command line. Previously self
2592 signed certificates were hard coded with serial number 0 and the
2593 CA options of 'x509' had to use a serial number in a file which was
2597 *) New options to 'ca' utility to support V2 CRL entry extensions.
2598 Currently CRL reason, invalidity date and hold instruction are
2599 supported. Add new CRL extensions to V3 code and some new objects.
2602 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2603 disable standard block padding (aka PKCS#5 padding) in the EVP
2604 API, which was previously mandatory. This means that the data is
2605 not padded in any way and so the total length much be a multiple
2606 of the block size, otherwise an error occurs.
2609 *) Initial (incomplete) OCSP SSL support.
2612 *) New function OCSP_parse_url(). This splits up a URL into its host,
2613 port and path components: primarily to parse OCSP URLs. New -url
2614 option to ocsp utility.
2617 *) New nonce behavior. The return value of OCSP_check_nonce() now
2618 reflects the various checks performed. Applications can decide
2619 whether to tolerate certain situations such as an absent nonce
2620 in a response when one was present in a request: the ocsp application
2621 just prints out a warning. New function OCSP_add1_basic_nonce()
2622 this is to allow responders to include a nonce in a response even if
2623 the request is nonce-less.
2626 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2627 skipped when using openssl x509 multiple times on a single input file,
2628 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2631 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2632 set string type: to handle setting ASN1_TIME structures. Fix ca
2633 utility to correctly initialize revocation date of CRLs.
2636 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2637 the clients preferred ciphersuites and rather use its own preferences.
2638 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2639 Internet Explorer by ensuring unchanged hash method during stepup.
2640 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2643 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2644 to aes and add a new 'exist' option to print out symbols that don't
2648 *) Additional options to ocsp utility to allow flags to be set and
2649 additional certificates supplied.
2652 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2653 OCSP client a number of certificate to only verify the response
2657 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2658 handle the new API. Currently only ECB, CBC modes supported. Add new
2661 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2662 Encryption Standard (AES) Ciphersuites for Transport Layer
2663 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2664 not enabled by default and were not part of the "ALL" ciphersuite
2665 alias because they were not yet official; they could be
2666 explicitly requested by specifying the "AESdraft" ciphersuite
2667 group alias. In the final release of OpenSSL 0.9.7, the group
2668 alias is called "AES" and is part of "ALL".)
2669 [Ben Laurie, Steve Henson, Bodo Moeller]
2671 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2672 request to response.
2675 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2676 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2677 extract information from a certificate request. OCSP_response_create()
2678 creates a response and optionally adds a basic response structure.
2679 OCSP_basic_add1_status() adds a complete single response to a basic
2680 response and returns the OCSP_SINGLERESP structure just added (to allow
2681 extensions to be included for example). OCSP_basic_add1_cert() adds a
2682 certificate to a basic response and OCSP_basic_sign() signs a basic
2683 response with various flags. New helper functions ASN1_TIME_check()
2684 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2685 (converts ASN1_TIME to GeneralizedTime).
2688 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2689 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2690 structure from a certificate. X509_pubkey_digest() digests the public_key
2691 contents: this is used in various key identifiers.
2694 *) Make sk_sort() tolerate a NULL argument.
2695 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2697 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2698 passed by the function are trusted implicitly. If any of them signed the
2699 response then it is assumed to be valid and is not verified.
2702 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2703 to data. This was previously part of the PKCS7 ASN1 code. This
2704 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2705 [Steve Henson, reported by Kenneth R. Robinette
2706 <support@securenetterm.com>]
2708 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2709 routines: without these tracing memory leaks is very painful.
2710 Fix leaks in PKCS12 and PKCS7 routines.
2713 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2714 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2715 effectively meant GeneralizedTime would never be used. Now it
2716 is initialised to -1 but X509_time_adj() now has to check the value
2717 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2718 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2719 [Steve Henson, reported by Kenneth R. Robinette
2720 <support@securenetterm.com>]
2722 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2723 result in a zero length in the ASN1_INTEGER structure which was
2724 not consistent with the structure when d2i_ASN1_INTEGER() was used
2725 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2726 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2727 where it did not print out a minus for negative ASN1_INTEGER.
2730 *) Add summary printout to ocsp utility. The various functions which
2731 convert status values to strings have been renamed to:
2732 OCSP_response_status_str(), OCSP_cert_status_str() and
2733 OCSP_crl_reason_str() and are no longer static. New options
2734 to verify nonce values and to disable verification. OCSP response
2735 printout format cleaned up.
2738 *) Add additional OCSP certificate checks. These are those specified
2739 in RFC2560. This consists of two separate checks: the CA of the
2740 certificate being checked must either be the OCSP signer certificate
2741 or the issuer of the OCSP signer certificate. In the latter case the
2742 OCSP signer certificate must contain the OCSP signing extended key
2743 usage. This check is performed by attempting to match the OCSP
2744 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2745 in the OCSP_CERTID structures of the response.
2748 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2749 and related routines. This uses the standard OpenSSL certificate
2750 verify routines to perform initial checks (just CA validity) and
2751 to obtain the certificate chain. Then additional checks will be
2752 performed on the chain. Currently the root CA is checked to see
2753 if it is explicitly trusted for OCSP signing. This is used to set
2754 a root CA as a global signing root: that is any certificate that
2755 chains to that CA is an acceptable OCSP signing certificate.
2758 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2759 extensions from a separate configuration file.
2760 As when reading extensions from the main configuration file,
2761 the '-extensions ...' option may be used for specifying the
2763 [Massimiliano Pala <madwolf@comune.modena.it>]
2765 *) New OCSP utility. Allows OCSP requests to be generated or
2766 read. The request can be sent to a responder and the output
2767 parsed, outputed or printed in text form. Not complete yet:
2768 still needs to check the OCSP response validity.
2771 *) New subcommands for 'openssl ca':
2772 'openssl ca -status <serial>' prints the status of the cert with
2773 the given serial number (according to the index file).
2774 'openssl ca -updatedb' updates the expiry status of certificates
2776 [Massimiliano Pala <madwolf@comune.modena.it>]
2778 *) New '-newreq-nodes' command option to CA.pl. This is like
2779 '-newreq', but calls 'openssl req' with the '-nodes' option
2780 so that the resulting key is not encrypted.
2781 [Damien Miller <djm@mindrot.org>]
2783 *) New configuration for the GNU Hurd.
2784 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2786 *) Initial code to implement OCSP basic response verify. This
2787 is currently incomplete. Currently just finds the signer's
2788 certificate and verifies the signature on the response.
2791 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2792 value of OPENSSLDIR. This is available via the new '-d' option
2793 to 'openssl version', and is also included in 'openssl version -a'.
2796 *) Allowing defining memory allocation callbacks that will be given
2797 file name and line number information in additional arguments
2798 (a const char* and an int). The basic functionality remains, as
2799 well as the original possibility to just replace malloc(),
2800 realloc() and free() by functions that do not know about these
2801 additional arguments. To register and find out the current
2802 settings for extended allocation functions, the following
2803 functions are provided:
2805 CRYPTO_set_mem_ex_functions
2806 CRYPTO_set_locked_mem_ex_functions
2807 CRYPTO_get_mem_ex_functions
2808 CRYPTO_get_locked_mem_ex_functions
2810 These work the same way as CRYPTO_set_mem_functions and friends.
2811 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2812 extended allocation function is enabled.
2813 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2814 a conventional allocation function is enabled.
2815 [Richard Levitte, Bodo Moeller]
2817 *) Finish off removing the remaining LHASH function pointer casts.
2818 There should no longer be any prototype-casting required when using
2819 the LHASH abstraction, and any casts that remain are "bugs". See
2820 the callback types and macros at the head of lhash.h for details
2821 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2824 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2825 If /dev/[u]random devices are not available or do not return enough
2826 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2828 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2829 /etc/entropy will be queried once each in this sequence, quering stops
2830 when enough entropy was collected without querying more sockets.
2833 *) Change the Unix RAND_poll() variant to be able to poll several
2834 random devices, as specified by DEVRANDOM, until a sufficient amount
2835 of data has been collected. We spend at most 10 ms on each file
2836 (select timeout) and read in non-blocking mode. DEVRANDOM now
2837 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2838 (previously it was just the string "/dev/urandom"), so on typical
2839 platforms the 10 ms delay will never occur.
2840 Also separate out the Unix variant to its own file, rand_unix.c.
2841 For VMS, there's a currently-empty rand_vms.c.
2844 *) Move OCSP client related routines to ocsp_cl.c. These
2845 provide utility functions which an application needing
2846 to issue a request to an OCSP responder and analyse the
2847 response will typically need: as opposed to those which an
2848 OCSP responder itself would need which will be added later.
2850 OCSP_request_sign() signs an OCSP request with an API similar
2851 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2852 response. OCSP_response_get1_basic() extracts basic response
2853 from response. OCSP_resp_find_status(): finds and extracts status
2854 information from an OCSP_CERTID structure (which will be created
2855 when the request structure is built). These are built from lower
2856 level functions which work on OCSP_SINGLERESP structures but
2857 wont normally be used unless the application wishes to examine
2858 extensions in the OCSP response for example.
2860 Replace nonce routines with a pair of functions.
2861 OCSP_request_add1_nonce() adds a nonce value and optionally
2862 generates a random value. OCSP_check_nonce() checks the
2863 validity of the nonce in an OCSP response.
2866 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2867 This doesn't copy the supplied OCSP_CERTID and avoids the
2868 need to free up the newly created id. Change return type
2869 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2870 This can then be used to add extensions to the request.
2871 Deleted OCSP_request_new(), since most of its functionality
2872 is now in OCSP_REQUEST_new() (and the case insensitive name
2873 clash) apart from the ability to set the request name which
2874 will be added elsewhere.
2877 *) Update OCSP API. Remove obsolete extensions argument from
2878 various functions. Extensions are now handled using the new
2879 OCSP extension code. New simple OCSP HTTP function which
2880 can be used to send requests and parse the response.
2883 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2884 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2885 uses the special reorder version of SET OF to sort the attributes
2886 and reorder them to match the encoded order. This resolves a long
2887 standing problem: a verify on a PKCS7 structure just after signing
2888 it used to fail because the attribute order did not match the
2889 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2890 it uses the received order. This is necessary to tolerate some broken
2891 software that does not order SET OF. This is handled by encoding
2892 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2893 to produce the required SET OF.
2896 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2897 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2898 files to get correct declarations of the ASN.1 item variables.
2901 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2902 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2903 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2904 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2905 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2906 ASN1_ITEM and no wrapper functions.
2909 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2910 replace the old function pointer based I/O routines. Change most of
2911 the *_d2i_bio() and *_d2i_fp() functions to use these.
2914 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2915 lines, recognice more "algorithms" that can be deselected, and make
2916 it complain about algorithm deselection that isn't recognised.
2919 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2920 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2921 to use new functions. Add NO_ASN1_OLD which can be set to remove
2922 some old style ASN1 functions: this can be used to determine if old
2923 code will still work when these eventually go away.
2926 *) New extension functions for OCSP structures, these follow the
2927 same conventions as certificates and CRLs.
2930 *) New function X509V3_add1_i2d(). This automatically encodes and
2931 adds an extension. Its behaviour can be customised with various
2932 flags to append, replace or delete. Various wrappers added for
2933 certifcates and CRLs.
2936 *) Fix to avoid calling the underlying ASN1 print routine when
2937 an extension cannot be parsed. Correct a typo in the
2938 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2941 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2942 entries for variables.
2945 *) Add functionality to apps/openssl.c for detecting locking
2946 problems: As the program is single-threaded, all we have
2947 to do is register a locking callback using an array for
2948 storing which locks are currently held by the program.
2951 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2952 SSL_get_ex_data_X509_STORE_idx(), which is used in
2953 ssl_verify_cert_chain() and thus can be called at any time
2954 during TLS/SSL handshakes so that thread-safety is essential.
2955 Unfortunately, the ex_data design is not at all suited
2956 for multi-threaded use, so it probably should be abolished.
2959 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2960 [Broadcom, tweaked and integrated by Geoff Thorpe]
2962 *) Move common extension printing code to new function
2963 X509V3_print_extensions(). Reorganise OCSP print routines and
2964 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2967 *) New function X509_signature_print() to remove duplication in some
2971 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2972 set (this was treated exactly the same as SET OF previously). This
2973 is used to reorder the STACK representing the structure to match the
2974 encoding. This will be used to get round a problem where a PKCS7
2975 structure which was signed could not be verified because the STACK
2976 order did not reflect the encoded order.
2979 *) Reimplement the OCSP ASN1 module using the new code.
2982 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2983 for its ASN1 operations. The old style function pointers still exist
2984 for now but they will eventually go away.
2987 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2988 completely replaces the old ASN1 functionality with a table driven
2989 encoder and decoder which interprets an ASN1_ITEM structure describing
2990 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2991 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2992 has also been converted to the new form.
2995 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2996 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2997 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2998 for negative moduli.
3001 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3002 of not touching the result's sign bit.
3005 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3009 *) Changed the LHASH code to use prototypes for callbacks, and created
3010 macros to declare and implement thin (optionally static) functions
3011 that provide type-safety and avoid function pointer casting for the
3012 type-specific callbacks.
3015 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3017 [Veers Staats <staatsvr@asc.hpc.mil>,
3018 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3020 *) Reformat the FAQ so the different questions and answers can be divided
3021 in sections depending on the subject.
3024 *) Have the zlib compression code load ZLIB.DLL dynamically under
3028 *) New function BN_mod_sqrt for computing square roots modulo a prime
3029 (using the probabilistic Tonelli-Shanks algorithm unless
3030 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3031 be handled deterministically).
3032 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3034 *) Make BN_mod_inverse faster by explicitly handling small quotients
3035 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3036 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3039 *) New function BN_kronecker.
3042 *) Fix BN_gcd so that it works on negative inputs; the result is
3043 positive unless both parameters are zero.
3044 Previously something reasonably close to an infinite loop was
3045 possible because numbers could be growing instead of shrinking
3046 in the implementation of Euclid's algorithm.
3049 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3050 sign of the number in question.
3052 Fix BN_is_word(a,w) to work correctly for w == 0.
3054 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3055 because its test if the absolute value of 'a' equals 'w'.
3056 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3057 it exists mostly for use in the implementations of BN_is_zero(),
3058 BN_is_one(), and BN_is_word().
3061 *) New function BN_swap.
3064 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3065 the exponentiation functions are more likely to produce reasonable
3066 results on negative inputs.
3069 *) Change BN_mod_mul so that the result is always non-negative.
3070 Previously, it could be negative if one of the factors was negative;
3071 I don't think anyone really wanted that behaviour.
3074 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3075 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3076 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3077 and add new functions:
3086 BN_mod_lshift1_quick
3090 These functions always generate non-negative results.
3092 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3093 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3095 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3096 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3097 be reduced modulo m.
3098 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3101 The following entry accidentily appeared in the CHANGES file
3102 distributed with OpenSSL 0.9.7. The modifications described in
3103 it do *not* apply to OpenSSL 0.9.7.
3105 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3106 was actually never needed) and in BN_mul(). The removal in BN_mul()
3107 required a small change in bn_mul_part_recursive() and the addition
3108 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3109 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3110 bn_sub_words() and bn_add_words() except they take arrays with
3115 *) In 'openssl passwd', verify passwords read from the terminal
3116 unless the '-salt' option is used (which usually means that
3117 verification would just waste user's time since the resulting
3118 hash is going to be compared with some given password hash)
3119 or the new '-noverify' option is used.
3121 This is an incompatible change, but it does not affect
3122 non-interactive use of 'openssl passwd' (passwords on the command
3123 line, '-stdin' option, '-in ...' option) and thus should not
3127 *) Remove all references to RSAref, since there's no more need for it.
3130 *) Make DSO load along a path given through an environment variable
3131 (SHLIB_PATH) with shl_load().
3134 *) Constify the ENGINE code as a result of BIGNUM constification.
3135 Also constify the RSA code and most things related to it. In a
3136 few places, most notable in the depth of the ASN.1 code, ugly
3137 casts back to non-const were required (to be solved at a later
3141 *) Make it so the openssl application has all engines loaded by default.
3144 *) Constify the BIGNUM routines a little more.
3147 *) Add the following functions:
3149 ENGINE_load_cswift()
3151 ENGINE_load_atalla()
3153 ENGINE_load_builtin_engines()
3155 That way, an application can itself choose if external engines that
3156 are built-in in OpenSSL shall ever be used or not. The benefit is
3157 that applications won't have to be linked with libdl or other dso
3158 libraries unless it's really needed.
3160 Changed 'openssl engine' to load all engines on demand.
3161 Changed the engine header files to avoid the duplication of some
3162 declarations (they differed!).
3165 *) 'openssl engine' can now list capabilities.
3168 *) Better error reporting in 'openssl engine'.
3171 *) Never call load_dh_param(NULL) in s_server.
3174 *) Add engine application. It can currently list engines by name and
3175 identity, and test if they are actually available.
3178 *) Improve RPM specification file by forcing symbolic linking and making
3179 sure the installed documentation is also owned by root.root.
3180 [Damien Miller <djm@mindrot.org>]
3182 *) Give the OpenSSL applications more possibilities to make use of
3183 keys (public as well as private) handled by engines.
3186 *) Add OCSP code that comes from CertCo.
3189 *) Add VMS support for the Rijndael code.
3192 *) Added untested support for Nuron crypto accelerator.
3195 *) Add support for external cryptographic devices. This code was
3196 previously distributed separately as the "engine" branch.
3197 [Geoff Thorpe, Richard Levitte]
3199 *) Rework the filename-translation in the DSO code. It is now possible to
3200 have far greater control over how a "name" is turned into a filename
3201 depending on the operating environment and any oddities about the
3202 different shared library filenames on each system.
3205 *) Support threads on FreeBSD-elf in Configure.
3208 *) Fix for SHA1 assembly problem with MASM: it produces
3209 warnings about corrupt line number information when assembling
3210 with debugging information. This is caused by the overlapping
3212 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3215 NCONF_get_number() has no error checking at all. As a replacement,
3216 NCONF_get_number_e() is defined (_e for "error checking") and is
3217 promoted strongly. The old NCONF_get_number is kept around for
3218 binary backward compatibility.
3219 Make it possible for methods to load from something other than a BIO,
3220 by providing a function pointer that is given a name instead of a BIO.
3221 For example, this could be used to load configuration data from an
3225 *) Fix for non blocking accept BIOs. Added new I/O special reason
3226 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3227 with non blocking I/O was not possible because no retry code was
3228 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3232 *) Added the beginnings of Rijndael support.
3235 *) Fix for bug in DirectoryString mask setting. Add support for
3236 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3237 to allow certificate printing to more controllable, additional
3238 'certopt' option to 'x509' to allow new printing options to be
3242 *) Clean old EAY MD5 hack from e_os.h.
3245 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3247 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3248 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3249 [Joe Orton, Steve Henson]
3251 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3253 *) Fix additional bug revealed by the NISCC test suite:
3255 Stop bug triggering large recursion when presented with
3256 certain ASN.1 tags (CVE-2003-0851)
3259 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3261 *) Fix various bugs revealed by running the NISCC test suite:
3263 Stop out of bounds reads in the ASN1 code when presented with
3264 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3266 If verify callback ignores invalid public key errors don't try to check
3267 certificate signature with the NULL public key.
3271 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3272 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3276 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3277 extra data after the compression methods not only for TLS 1.0
3278 but also for SSL 3.0 (as required by the specification).
3279 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3281 *) Change X509_certificate_type() to mark the key as exported/exportable
3282 when it's 512 *bits* long, not 512 bytes.
3285 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3287 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3288 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3289 a protocol version number mismatch like a decryption error
3290 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3293 *) Turn on RSA blinding by default in the default implementation
3294 to avoid a timing attack. Applications that don't want it can call
3295 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3296 They would be ill-advised to do so in most cases.
3297 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3299 *) Change RSA blinding code so that it works when the PRNG is not
3300 seeded (in this case, the secret RSA exponent is abused as
3301 an unpredictable seed -- if it is not unpredictable, there
3302 is no point in blinding anyway). Make RSA blinding thread-safe
3303 by remembering the creator's thread ID in rsa->blinding and
3304 having all other threads use local one-time blinding factors
3305 (this requires more computation than sharing rsa->blinding, but
3306 avoids excessive locking; and if an RSA object is not shared
3307 between threads, blinding will still be very fast).
3310 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3312 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3313 via timing by performing a MAC computation even if incorrrect
3314 block cipher padding has been found. This is a countermeasure
3315 against active attacks where the attacker has to distinguish
3316 between bad padding and a MAC verification error. (CVE-2003-0078)
3318 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3319 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3320 Martin Vuagnoux (EPFL, Ilion)]
3322 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3324 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3325 memory from it's contents. This is done with a counter that will
3326 place alternating values in each byte. This can be used to solve
3327 two issues: 1) the removal of calls to memset() by highly optimizing
3328 compilers, and 2) cleansing with other values than 0, since those can
3329 be read through on certain media, for example a swap space on disk.
3332 *) Bugfix: client side session caching did not work with external caching,
3333 because the session->cipher setting was not restored when reloading
3334 from the external cache. This problem was masked, when
3335 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3336 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3339 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3340 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3341 [Zeev Lieber <zeev-l@yahoo.com>]
3343 *) Undo an undocumented change introduced in 0.9.6e which caused
3344 repeated calls to OpenSSL_add_all_ciphers() and
3345 OpenSSL_add_all_digests() to be ignored, even after calling
3349 *) Change the default configuration reader to deal with last line not
3350 being properly terminated.
3353 *) Change X509_NAME_cmp() so it applies the special rules on handling
3354 DN values that are of type PrintableString, as well as RDNs of type
3355 emailAddress where the value has the type ia5String.
3356 [stefank@valicert.com via Richard Levitte]
3358 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3359 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3360 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3361 the bitwise-OR of the two for use by the majority of applications
3362 wanting this behaviour, and update the docs. The documented
3363 behaviour and actual behaviour were inconsistent and had been
3364 changing anyway, so this is more a bug-fix than a behavioural
3366 [Geoff Thorpe, diagnosed by Nadav Har'El]
3368 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3369 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3372 *) Fix initialization code race conditions in
3373 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3374 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3375 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3376 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3377 ssl2_get_cipher_by_char(),
3378 ssl3_get_cipher_by_char().
3379 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3381 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3382 the cached sessions are flushed, as the remove_cb() might use ex_data
3383 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3384 (see [openssl.org #212]).
3385 [Geoff Thorpe, Lutz Jaenicke]
3387 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3388 length, instead of the encoding length to d2i_ASN1_OBJECT.
3391 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3393 *) [In 0.9.6g-engine release:]
3394 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3395 [Lynn Gazis <lgazis@rainbow.com>]
3397 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3399 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3400 and get fix the header length calculation.
3401 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3402 Alon Kantor <alonk@checkpoint.com> (and others),
3405 *) Use proper error handling instead of 'assertions' in buffer
3406 overflow checks added in 0.9.6e. This prevents DoS (the
3407 assertions could call abort()).
3408 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3410 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3412 *) Add various sanity checks to asn1_get_length() to reject
3413 the ASN1 length bytes if they exceed sizeof(long), will appear
3414 negative or the content length exceeds the length of the
3416 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3418 *) Fix cipher selection routines: ciphers without encryption had no flags
3419 for the cipher strength set and where therefore not handled correctly
3420 by the selection routines (PR #130).
3423 *) Fix EVP_dsa_sha macro.
3427 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3428 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3429 that was added in OpenSSL 0.9.6d.
3431 As the countermeasure turned out to be incompatible with some
3432 broken SSL implementations, the new option is part of SSL_OP_ALL.
3433 SSL_OP_ALL is usually employed when compatibility with weird SSL
3434 implementations is desired (e.g. '-bugs' option to 's_client' and
3435 's_server'), so the new option is automatically set in many
3439 *) Changes in security patch:
3441 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3442 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3443 Air Force Materiel Command, USAF, under agreement number
3446 *) Add various sanity checks to asn1_get_length() to reject
3447 the ASN1 length bytes if they exceed sizeof(long), will appear
3448 negative or the content length exceeds the length of the
3449 supplied buffer. (CVE-2002-0659)
3450 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3452 *) Assertions for various potential buffer overflows, not known to
3454 [Ben Laurie (CHATS)]
3456 *) Various temporary buffers to hold ASCII versions of integers were
3457 too small for 64 bit platforms. (CVE-2002-0655)
3458 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3460 *) Remote buffer overflow in SSL3 protocol - an attacker could
3461 supply an oversized session ID to a client. (CVE-2002-0656)
3462 [Ben Laurie (CHATS)]
3464 *) Remote buffer overflow in SSL2 protocol - an attacker could
3465 supply an oversized client master key. (CVE-2002-0656)
3466 [Ben Laurie (CHATS)]
3468 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3470 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3471 encoded as NULL) with id-dsa-with-sha1.
3472 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3474 *) Check various X509_...() return values in apps/req.c.
3475 [Nils Larsch <nla@trustcenter.de>]
3477 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3478 an end-of-file condition would erronously be flagged, when the CRLF
3479 was just at the end of a processed block. The bug was discovered when
3480 processing data through a buffering memory BIO handing the data to a
3481 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3482 <ptsekov@syntrex.com> and Nedelcho Stanev.
3485 *) Implement a countermeasure against a vulnerability recently found
3486 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3487 before application data chunks to avoid the use of known IVs
3488 with data potentially chosen by the attacker.
3491 *) Fix length checks in ssl3_get_client_hello().
3494 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3495 to prevent ssl3_read_internal() from incorrectly assuming that
3496 ssl3_read_bytes() found application data while handshake
3497 processing was enabled when in fact s->s3->in_read_app_data was
3498 merely automatically cleared during the initial handshake.
3499 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3501 *) Fix object definitions for Private and Enterprise: they were not
3502 recognized in their shortname (=lowercase) representation. Extend
3503 obj_dat.pl to issue an error when using undefined keywords instead
3504 of silently ignoring the problem (Svenning Sorensen
3505 <sss@sss.dnsalias.net>).
3508 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3509 generators, i.e. generators other than 2 and 5. (Previously, the
3510 code did not properly initialise the 'add' and 'rem' values to
3511 BN_generate_prime().)
3513 In the new general case, we do not insist that 'generator' is
3514 actually a primitive root: This requirement is rather pointless;
3515 a generator of the order-q subgroup is just as good, if not
3519 *) Map new X509 verification errors to alerts. Discovered and submitted by
3520 Tom Wu <tom@arcot.com>.
3523 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3524 returning non-zero before the data has been completely received
3525 when using non-blocking I/O.
3526 [Bodo Moeller; problem pointed out by John Hughes]
3528 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3529 [Ben Laurie, Lutz Jaenicke]
3531 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3532 Yoram Zahavi <YoramZ@gilian.com>).
3535 *) Add information about CygWin 1.3 and on, and preserve proper
3536 configuration for the versions before that.
3537 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3539 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3540 check whether we deal with a copy of a session and do not delete from
3541 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3542 <izhar@checkpoint.com>.
3545 *) Do not store session data into the internal session cache, if it
3546 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3547 flag is set). Proposed by Aslam <aslam@funk.com>.
3550 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3554 *) [In 0.9.6d-engine release:]
3555 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3556 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3558 *) Add the configuration target linux-s390x.
3559 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3561 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3562 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3563 variable as an indication that a ClientHello message has been
3564 received. As the flag value will be lost between multiple
3565 invocations of ssl3_accept when using non-blocking I/O, the
3566 function may not be aware that a handshake has actually taken
3567 place, thus preventing a new session from being added to the
3570 To avoid this problem, we now set s->new_session to 2 instead of
3571 using a local variable.
3572 [Lutz Jaenicke, Bodo Moeller]
3574 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3575 if the SSL_R_LENGTH_MISMATCH error is detected.
3576 [Geoff Thorpe, Bodo Moeller]
3578 *) New 'shared_ldflag' column in Configure platform table.
3581 *) Fix EVP_CIPHER_mode macro.
3582 ["Dan S. Camper" <dan@bti.net>]
3584 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3585 type, we must throw them away by setting rr->length to 0.
3586 [D P Chang <dpc@qualys.com>]
3588 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3590 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3591 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3592 worked incorrectly for those cases where range = 10..._2 and
3593 3*range is two bits longer than range.)
projects / openssl.git / blob