5 Changes between 0.9.8a and 0.9.9 [xx XXX xxxx]
7 *) Disable rogue ciphersuites:
9 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
10 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
11 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
13 The latter two were purportedly from
14 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
17 Other ciphersuites from draft-ietf-tls-56-bit-ciphersuites-01.txt
18 remain enabled for now, but are just as unofficial, and the ID
19 has long expired; these will probably disappear soon.
22 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
23 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
27 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
28 dedicated Montgomery multiplication procedure, is introduced.
29 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
30 "64-bit" performance on certain 32-bit targets.
33 *) New option SSL_OP_NO_COMP to disable use of compression selectively
34 in SSL structures. New SSL ctrl to set maximum send fragment size.
35 Save memory by seeting the I/O buffer sizes dynamically instead of
36 using the maximum available value.
39 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
40 in addition to the text details.
43 *) Very, very preliminary EXPERIMENTAL support for printing of general
44 ASN1 structures. This currently produces rather ugly output and doesn't
45 handle several customised structures at all.
48 *) Integrated support for PVK file format and some related formats such
49 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
50 these in the 'rsa' and 'dsa' utilities.
53 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
56 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
57 place for the (very old) "NETSCAPE" format certificates which are now
58 handled using new ASN1 code equivalents.
61 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
62 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
63 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
66 *) Modify CRL distribution points extension code to print out previously
67 unsupported fields. Enhance extension setting code to allow setting of
71 *) Add print and set support for Issuing Distribution Point CRL extension.
74 Changes between 0.9.8a and 0.9.8b [XX xxx XXXX]
76 *) Add support for building of engines under engine/ as shared libraries
77 under VC++ build system.
80 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
81 Hopefully, we will not see any false combination of paths any more.
84 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
86 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
87 (part of SSL_OP_ALL). This option used to disable the
88 countermeasure against man-in-the-middle protocol-version
89 rollback in the SSL 2.0 server implementation, which is a bad
92 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
93 for Information Security, National Institute of Advanced Industrial
94 Science and Technology [AIST], Japan)]
96 *) Add two function to clear and return the verify parameter flags.
99 *) Keep cipherlists sorted in the source instead of sorting them at
100 runtime, thus removing the need for a lock.
103 *) Avoid some small subgroup attacks in Diffie-Hellman.
104 [Nick Mathewson and Ben Laurie]
106 *) Add functions for well-known primes.
109 *) Extended Windows CE support.
110 [Satoshi Nakamura and Andy Polyakov]
112 *) Initialize SSL_METHOD structures at compile time instead of during
113 runtime, thus removing the need for a lock.
116 *) Make PKCS7_decrypt() work even if no certificate is supplied by
117 attempting to decrypt each encrypted key in turn. Add support to
121 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
123 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
126 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
127 key into the same file any more.
130 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
133 *) Add -utf8 command line and config file option to 'ca'.
134 [Stefan <stf@udoma.org]
136 *) Removed the macro des_crypt(), as it seems to conflict with some
137 libraries. Use DES_crypt().
140 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
141 involves renaming the source and generated shared-libs for
142 both. The engines will accept the corrected or legacy ids
143 ('ncipher' and '4758_cca' respectively) when binding. NB,
144 this only applies when building 'shared'.
145 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
147 *) Add attribute functions to EVP_PKEY structure. Modify
148 PKCS12_create() to recognize a CSP name attribute and
149 use it. Make -CSP option work again in pkcs12 utility.
152 *) Add new functionality to the bn blinding code:
153 - automatic re-creation of the BN_BLINDING parameters after
154 a fixed number of uses (currently 32)
155 - add new function for parameter creation
156 - introduce flags to control the update behaviour of the
157 BN_BLINDING parameters
158 - hide BN_BLINDING structure
159 Add a second BN_BLINDING slot to the RSA structure to improve
160 performance when a single RSA object is shared among several
164 *) Add support for DTLS.
165 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
167 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
168 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
171 *) Remove buggy and incompletet DH cert support from
172 ssl/ssl_rsa.c and ssl/s3_both.c
175 *) Use SHA-1 instead of MD5 as the default digest algorithm for
176 the apps/openssl applications.
179 *) Compile clean with "-Wall -Wmissing-prototypes
180 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
181 DEBUG_SAFESTACK must also be set.
184 *) Change ./Configure so that certain algorithms can be disabled by default.
185 The new counterpiece to "no-xxx" is "enable-xxx".
187 The patented RC5 and MDC2 algorithms will now be disabled unless
188 "enable-rc5" and "enable-mdc2", respectively, are specified.
190 (IDEA remains enabled despite being patented. This is because IDEA
191 is frequently required for interoperability, and there is no license
192 fee for non-commercial use. As before, "no-idea" can be used to
193 avoid this algorithm.)
197 *) Add processing of proxy certificates (see RFC 3820). This work was
198 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
199 EGEE (Enabling Grids for E-science in Europe).
202 *) RC4 performance overhaul on modern architectures/implementations, such
203 as Intel P4, IA-64 and AMD64.
206 *) New utility extract-section.pl. This can be used specify an alternative
207 section number in a pod file instead of having to treat each file as
208 a separate case in Makefile. This can be done by adding two lines to the
211 =for comment openssl_section:XXX
213 The blank line is mandatory.
217 *) New arguments -certform, -keyform and -pass for s_client and s_server
218 to allow alternative format key and certificate files and passphrase
222 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
223 update associated structures and add various utility functions.
225 Add new policy related verify parameters, include policy checking in
226 standard verify code. Enhance 'smime' application with extra parameters
227 to support policy checking and print out.
230 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
231 Nehemiah processors. These extensions support AES encryption in hardware
232 as well as RNG (though RNG support is currently disabled).
233 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
235 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
238 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
239 [Andy Polyakov and a number of other people]
241 *) Improved PowerPC platform support. Most notably BIGNUM assembler
242 implementation contributed by IBM.
243 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
245 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
246 exponent rather than 'unsigned long'. There is a corresponding change to
247 the new 'rsa_keygen' element of the RSA_METHOD structure.
248 [Jelte Jansen, Geoff Thorpe]
250 *) Functionality for creating the initial serial number file is now
251 moved from CA.pl to the 'ca' utility with a new option -create_serial.
253 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
254 number file to 1, which is bound to cause problems. To avoid
255 the problems while respecting compatibility between different 0.9.7
256 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
257 CA.pl for serial number initialization. With the new release 0.9.8,
258 we can fix the problem directly in the 'ca' utility.)
261 *) Reduced header interdepencies by declaring more opaque objects in
262 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
263 give fewer recursive includes, which could break lazy source code - so
264 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
265 developers should define this symbol when building and using openssl to
266 ensure they track the recommended behaviour, interfaces, [etc], but
267 backwards-compatible behaviour prevails when this isn't defined.
270 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
273 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
274 This will generate a random key of the appropriate length based on the
275 cipher context. The EVP_CIPHER can provide its own random key generation
276 routine to support keys of a specific form. This is used in the des and
277 3des routines to generate a key of the correct parity. Update S/MIME
278 code to use new functions and hence generate correct parity DES keys.
279 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
280 valid (weak or incorrect parity).
283 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
284 as looking them up. This is useful when the verified structure may contain
285 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
286 present unless the new PKCS7_NO_CRL flag is asserted.
289 *) Extend ASN1 oid configuration module. It now additionally accepts the
292 shortName = some long name, 1.2.3.4
295 *) Reimplemented the BN_CTX implementation. There is now no more static
296 limitation on the number of variables it can handle nor the depth of the
297 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
298 information can now expand as required, and rather than having a single
299 static array of bignums, BN_CTX now uses a linked-list of such arrays
300 allowing it to expand on demand whilst maintaining the usefulness of
304 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
305 to allow all RSA operations to function using a single BN_CTX.
308 *) Preliminary support for certificate policy evaluation and checking. This
309 is initially intended to pass the tests outlined in "Conformance Testing
310 of Relying Party Client Certificate Path Processing Logic" v1.07.
313 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
314 remained unused and not that useful. A variety of other little bignum
315 tweaks and fixes have also been made continuing on from the audit (see
319 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
320 associated ASN1, EVP and SSL functions and old ASN1 macros.
323 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
324 and this should never fail. So the return value from the use of
325 BN_set_word() (which can fail due to needless expansion) is now deprecated;
326 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
329 *) BN_CTX_get() should return zero-valued bignums, providing the same
330 initialised value as BN_new().
331 [Geoff Thorpe, suggested by Ulf Möller]
333 *) Support for inhibitAnyPolicy certificate extension.
336 *) An audit of the BIGNUM code is underway, for which debugging code is
337 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
338 is considered valid when processing BIGNUMs, and causes execution to
339 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
340 further steps are taken to deliberately pollute unused data in BIGNUM
341 structures to try and expose faulty code further on. For now, openssl will
342 (in its default mode of operation) continue to tolerate the inconsistent
343 forms that it has tolerated in the past, but authors and packagers should
344 consider trying openssl and their own applications when compiled with
345 these debugging symbols defined. It will help highlight potential bugs in
346 their own code, and will improve the test coverage for OpenSSL itself. At
347 some point, these tighter rules will become openssl's default to improve
348 maintainability, though the assert()s and other overheads will remain only
349 in debugging configurations. See bn.h for more details.
350 [Geoff Thorpe, Nils Larsch, Ulf Möller]
352 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
353 that can only be obtained through BN_CTX_new() (which implicitly
354 initialises it). The presence of this function only made it possible
355 to overwrite an existing structure (and cause memory leaks).
358 *) Because of the callback-based approach for implementing LHASH as a
359 template type, lh_insert() adds opaque objects to hash-tables and
360 lh_doall() or lh_doall_arg() are typically used with a destructor callback
361 to clean up those corresponding objects before destroying the hash table
362 (and losing the object pointers). So some over-zealous constifications in
363 LHASH have been relaxed so that lh_insert() does not take (nor store) the
364 objects as "const" and the lh_doall[_arg] callback wrappers are not
365 prototyped to have "const" restrictions on the object pointers they are
366 given (and so aren't required to cast them away any more).
369 *) The tmdiff.h API was so ugly and minimal that our own timing utility
370 (speed) prefers to use its own implementation. The two implementations
371 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
372 its object type properly exposed (MS_TM) instead of casting to/from "char
373 *". This may still change yet if someone realises MS_TM and "ms_time_***"
374 aren't necessarily the greatest nomenclatures - but this is what was used
375 internally to the implementation so I've used that for now.
378 *) Ensure that deprecated functions do not get compiled when
379 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
380 the self-tests were still using deprecated key-generation functions so
381 these have been updated also.
384 *) Reorganise PKCS#7 code to separate the digest location functionality
385 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
386 New function PKCS7_set_digest() to set the digest type for PKCS#7
387 digestedData type. Add additional code to correctly generate the
388 digestedData type and add support for this type in PKCS7 initialization
392 *) New function PKCS7_set0_type_other() this initializes a PKCS7
393 structure of type "other".
396 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
397 sure the loop does correctly stop and breaking ("division by zero")
398 modulus operations are not performed. The (pre-generated) prime
399 table crypto/bn/bn_prime.h was already correct, but it could not be
400 re-generated on some platforms because of the "division by zero"
401 situation in the script.
402 [Ralf S. Engelschall]
404 *) Update support for ECC-based TLS ciphersuites according to
405 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
406 SHA-1 now is only used for "small" curves (where the
407 representation of a field element takes up to 24 bytes); for
408 larger curves, the field element resulting from ECDH is directly
409 used as premaster secret.
410 [Douglas Stebila (Sun Microsystems Laboratories)]
412 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
413 curve secp160r1 to the tests.
414 [Douglas Stebila (Sun Microsystems Laboratories)]
416 *) Add the possibility to load symbols globally with DSO.
417 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
419 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
420 control of the error stack.
423 *) Add support for STORE in ENGINE.
426 *) Add the STORE type. The intention is to provide a common interface
427 to certificate and key stores, be they simple file-based stores, or
428 HSM-type store, or LDAP stores, or...
429 NOTE: The code is currently UNTESTED and isn't really used anywhere.
432 *) Add a generic structure called OPENSSL_ITEM. This can be used to
433 pass a list of arguments to any function as well as provide a way
434 for a function to pass data back to the caller.
437 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
438 works like BUF_strdup() but can be used to duplicate a portion of
439 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
443 *) Add the function sk_find_ex() which works like sk_find(), but will
444 return an index to an element even if an exact match couldn't be
445 found. The index is guaranteed to point at the element where the
446 searched-for key would be inserted to preserve sorting order.
449 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
450 takes an extra flags argument for optional functionality. Currently,
451 the following flags are defined:
453 OBJ_BSEARCH_VALUE_ON_NOMATCH
454 This one gets OBJ_bsearch_ex() to return a pointer to the first
455 element where the comparing function returns a negative or zero
458 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
459 This one gets OBJ_bsearch_ex() to return a pointer to the first
460 element where the comparing function returns zero. This is useful
461 if there are more than one element where the comparing function
465 *) Make it possible to create self-signed certificates with 'openssl ca'
466 in such a way that the self-signed certificate becomes part of the
467 CA database and uses the same mechanisms for serial number generation
468 as all other certificate signing. The new flag '-selfsign' enables
469 this functionality. Adapt CA.sh and CA.pl.in.
472 *) Add functionality to check the public key of a certificate request
473 against a given private. This is useful to check that a certificate
474 request can be signed by that key (self-signing).
477 *) Make it possible to have multiple active certificates with the same
478 subject in the CA index file. This is done only if the keyword
479 'unique_subject' is set to 'no' in the main CA section (default
480 if 'CA_default') of the configuration file. The value is saved
481 with the database itself in a separate index attribute file,
482 named like the index file with '.attr' appended to the name.
485 *) Generate muti valued AVAs using '+' notation in config files for
489 *) Support for nameConstraints certificate extension.
492 *) Support for policyConstraints certificate extension.
495 *) Support for policyMappings certificate extension.
498 *) Make sure the default DSA_METHOD implementation only uses its
499 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
500 and change its own handlers to be NULL so as to remove unnecessary
501 indirection. This lets alternative implementations fallback to the
502 default implementation more easily.
505 *) Support for directoryName in GeneralName related extensions
509 *) Make it possible to link applications using Makefile.shared.
510 Make that possible even when linking against static libraries!
513 *) Support for single pass processing for S/MIME signing. This now
514 means that S/MIME signing can be done from a pipe, in addition
515 cleartext signing (multipart/signed type) is effectively streaming
516 and the signed data does not need to be all held in memory.
518 This is done with a new flag PKCS7_STREAM. When this flag is set
519 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
520 is done after the data is output (and digests calculated) in
524 *) Add full support for -rpath/-R, both in shared libraries and
525 applications, at least on the platforms where it's known how
529 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
530 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
531 will now compute a table of multiples of the generator that
532 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
533 faster (notably in the case of a single point multiplication,
535 [Nils Larsch, Bodo Moeller]
537 *) IPv6 support for certificate extensions. The various extensions
538 which use the IP:a.b.c.d can now take IPv6 addresses using the
539 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
543 *) Added an ENGINE that implements RSA by performing private key
544 exponentiations with the GMP library. The conversions to and from
545 GMP's mpz_t format aren't optimised nor are any montgomery forms
546 cached, and on x86 it appears OpenSSL's own performance has caught up.
547 However there are likely to be other architectures where GMP could
548 provide a boost. This ENGINE is not built in by default, but it can be
549 specified at Configure time and should be accompanied by the necessary
550 linker additions, eg;
551 ./config -DOPENSSL_USE_GMP -lgmp
554 *) "openssl engine" will not display ENGINE/DSO load failure errors when
555 testing availability of engines with "-t" - the old behaviour is
556 produced by increasing the feature's verbosity with "-tt".
559 *) ECDSA routines: under certain error conditions uninitialized BN objects
560 could be freed. Solution: make sure initialization is performed early
561 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
565 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
566 and DH_METHOD (eg. by ENGINE implementations) to override the normal
567 software implementations. For DSA and DH, parameter generation can
568 also be overriden by providing the appropriate method callbacks.
571 *) Change the "progress" mechanism used in key-generation and
572 primality testing to functions that take a new BN_GENCB pointer in
573 place of callback/argument pairs. The new API functions have "_ex"
574 postfixes and the older functions are reimplemented as wrappers for
575 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
576 declarations of the old functions to help (graceful) attempts to
577 migrate to the new functions. Also, the new key-generation API
578 functions operate on a caller-supplied key-structure and return
579 success/failure rather than returning a key or NULL - this is to
580 help make "keygen" another member function of RSA_METHOD etc.
582 Example for using the new callback interface:
584 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
588 BN_GENCB_set(&my_cb, my_callback, my_arg);
590 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
591 /* For the meaning of a, b in calls to my_callback(), see the
592 * documentation of the function that calls the callback.
593 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
594 * my_callback should return 1 if it wants BN_is_prime_ex()
595 * to continue, or 0 to stop.
600 *) Change the ZLIB compression method to be stateful, and make it
601 available to TLS with the number defined in
602 draft-ietf-tls-compression-04.txt.
605 *) Add the ASN.1 structures and functions for CertificatePair, which
606 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
608 CertificatePair ::= SEQUENCE {
609 forward [0] Certificate OPTIONAL,
610 reverse [1] Certificate OPTIONAL,
611 -- at least one of the pair shall be present -- }
613 Also implement the PEM functions to read and write certificate
614 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
616 This needed to be defined, mostly for the sake of the LDAP
617 attribute crossCertificatePair, but may prove useful elsewhere as
621 *) Make it possible to inhibit symlinking of shared libraries in
622 Makefile.shared, for Cygwin's sake.
625 *) Extend the BIGNUM API by creating a function
626 void BN_set_negative(BIGNUM *a, int neg);
627 and a macro that behave like
628 int BN_is_negative(const BIGNUM *a);
630 to avoid the need to access 'a->neg' directly in applications.
633 *) Implement fast modular reduction for pseudo-Mersenne primes
634 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
635 EC_GROUP_new_curve_GFp() will now automatically use this
637 [Nils Larsch <nla@trustcenter.de>]
639 *) Add new lock type (CRYPTO_LOCK_BN).
642 *) Change the ENGINE framework to automatically load engines
643 dynamically from specific directories unless they could be
644 found to already be built in or loaded. Move all the
645 current engines except for the cryptodev one to a new
647 The engines in engines/ are built as shared libraries if
648 the "shared" options was given to ./Configure or ./config.
649 Otherwise, they are inserted in libcrypto.a.
650 /usr/local/ssl/engines is the default directory for dynamic
651 engines, but that can be overriden at configure time through
652 the usual use of --prefix and/or --openssldir, and at run
653 time with the environment variable OPENSSL_ENGINES.
654 [Geoff Thorpe and Richard Levitte]
656 *) Add Makefile.shared, a helper makefile to build shared
657 libraries. Addapt Makefile.org.
660 *) Add version info to Win32 DLLs.
661 [Peter 'Luna' Runestig" <peter@runestig.com>]
663 *) Add new 'medium level' PKCS#12 API. Certificates and keys
664 can be added using this API to created arbitrary PKCS#12
665 files while avoiding the low level API.
667 New options to PKCS12_create(), key or cert can be NULL and
668 will then be omitted from the output file. The encryption
669 algorithm NIDs can be set to -1 for no encryption, the mac
670 iteration count can be set to 0 to omit the mac.
672 Enhance pkcs12 utility by making the -nokeys and -nocerts
673 options work when creating a PKCS#12 file. New option -nomac
674 to omit the mac, NONE can be set for an encryption algorithm.
675 New code is modified to use the enhanced PKCS12_create()
676 instead of the low level API.
679 *) Extend ASN1 encoder to support indefinite length constructed
680 encoding. This can output sequences tags and octet strings in
681 this form. Modify pk7_asn1.c to support indefinite length
682 encoding. This is experimental and needs additional code to
683 be useful, such as an ASN1 bio and some enhanced streaming
686 Extend template encode functionality so that tagging is passed
687 down to the template encoder.
690 *) Let 'openssl req' fail if an argument to '-newkey' is not
691 recognized instead of using RSA as a default.
694 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
695 As these are not official, they are not included in "ALL";
696 the "ECCdraft" ciphersuite group alias can be used to select them.
697 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
699 *) Add ECDH engine support.
700 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
702 *) Add ECDH in new directory crypto/ecdh/.
703 [Douglas Stebila (Sun Microsystems Laboratories)]
705 *) Let BN_rand_range() abort with an error after 100 iterations
706 without success (which indicates a broken PRNG).
709 *) Change BN_mod_sqrt() so that it verifies that the input value
710 is really the square of the return value. (Previously,
711 BN_mod_sqrt would show GIGO behaviour.)
714 *) Add named elliptic curves over binary fields from X9.62, SECG,
715 and WAP/WTLS; add OIDs that were still missing.
717 [Sheueling Chang Shantz and Douglas Stebila
718 (Sun Microsystems Laboratories)]
720 *) Extend the EC library for elliptic curves over binary fields
721 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
724 EC_GF2m_simple_method
728 EC_GROUP_new_curve_GF2m
729 EC_GROUP_set_curve_GF2m
730 EC_GROUP_get_curve_GF2m
731 EC_POINT_set_affine_coordinates_GF2m
732 EC_POINT_get_affine_coordinates_GF2m
733 EC_POINT_set_compressed_coordinates_GF2m
735 Point compression for binary fields is disabled by default for
736 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
739 As binary polynomials are represented as BIGNUMs, various members
740 of the EC_GROUP and EC_POINT data structures can be shared
741 between the implementations for prime fields and binary fields;
742 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
743 are essentially identical to their ..._GFp counterparts.
744 (For simplicity, the '..._GFp' prefix has been dropped from
745 various internal method names.)
747 An internal 'field_div' method (similar to 'field_mul' and
748 'field_sqr') has been added; this is used only for binary fields.
750 [Sheueling Chang Shantz and Douglas Stebila
751 (Sun Microsystems Laboratories)]
753 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
754 through methods ('mul', 'precompute_mult').
756 The generic implementations (now internally called 'ec_wNAF_mul'
757 and 'ec_wNAF_precomputed_mult') remain the default if these
758 methods are undefined.
760 [Sheueling Chang Shantz and Douglas Stebila
761 (Sun Microsystems Laboratories)]
763 *) New function EC_GROUP_get_degree, which is defined through
764 EC_METHOD. For curves over prime fields, this returns the bit
765 length of the modulus.
767 [Sheueling Chang Shantz and Douglas Stebila
768 (Sun Microsystems Laboratories)]
770 *) New functions EC_GROUP_dup, EC_POINT_dup.
771 (These simply call ..._new and ..._copy).
773 [Sheueling Chang Shantz and Douglas Stebila
774 (Sun Microsystems Laboratories)]
776 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
777 Polynomials are represented as BIGNUMs (where the sign bit is not
778 used) in the following functions [macros]:
781 BN_GF2m_sub [= BN_GF2m_add]
782 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
783 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
784 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
786 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
787 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
788 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
789 BN_GF2m_cmp [= BN_ucmp]
791 (Note that only the 'mod' functions are actually for fields GF(2^m).
792 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
794 For some functions, an the irreducible polynomial defining a
795 field can be given as an 'unsigned int[]' with strictly
796 decreasing elements giving the indices of those bits that are set;
797 i.e., p[] represents the polynomial
798 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
800 p[0] > p[1] > ... > p[k] = 0.
801 This applies to the following functions:
806 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
807 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
810 BN_GF2m_mod_solve_quad_arr
814 Conversion can be performed by the following functions:
819 bntest.c has additional tests for binary polynomial arithmetic.
821 Two implementations for BN_GF2m_mod_div() are available.
822 The default algorithm simply uses BN_GF2m_mod_inv() and
823 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
824 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
825 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
827 [Sheueling Chang Shantz and Douglas Stebila
828 (Sun Microsystems Laboratories)]
830 *) Add new error code 'ERR_R_DISABLED' that can be used when some
831 functionality is disabled at compile-time.
832 [Douglas Stebila <douglas.stebila@sun.com>]
834 *) Change default behaviour of 'openssl asn1parse' so that more
835 information is visible when viewing, e.g., a certificate:
837 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
838 mode the content of non-printable OCTET STRINGs is output in a
839 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
840 avoid the appearance of a printable string.
841 [Nils Larsch <nla@trustcenter.de>]
843 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
845 EC_GROUP_set_asn1_flag()
846 EC_GROUP_get_asn1_flag()
847 EC_GROUP_set_point_conversion_form()
848 EC_GROUP_get_point_conversion_form()
849 These control ASN1 encoding details:
850 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
851 has been set to OPENSSL_EC_NAMED_CURVE.
852 - Points are encoded in uncompressed form by default; options for
853 asn1_for are as for point2oct, namely
854 POINT_CONVERSION_COMPRESSED
855 POINT_CONVERSION_UNCOMPRESSED
856 POINT_CONVERSION_HYBRID
858 Also add 'seed' and 'seed_len' members to EC_GROUP with access
862 EC_GROUP_get_seed_len()
863 This is used only for ASN1 purposes (so far).
864 [Nils Larsch <nla@trustcenter.de>]
866 *) Add 'field_type' member to EC_METHOD, which holds the NID
867 of the appropriate field type OID. The new function
868 EC_METHOD_get_field_type() returns this value.
869 [Nils Larsch <nla@trustcenter.de>]
876 providing useful interfaces to EC_POINT_point2oct() and
877 EC_POINT_oct2point().
878 [Nils Larsch <nla@trustcenter.de>]
880 *) Change internals of the EC library so that the functions
881 EC_GROUP_set_generator()
882 EC_GROUP_get_generator()
884 EC_GROUP_get_cofactor()
885 are implemented directly in crypto/ec/ec_lib.c and not dispatched
886 to methods, which would lead to unnecessary code duplication when
887 adding different types of curves.
888 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
890 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
891 arithmetic, and such that modified wNAFs are generated
892 (which avoid length expansion in many cases).
895 *) Add a function EC_GROUP_check_discriminant() (defined via
896 EC_METHOD) that verifies that the curve discriminant is non-zero.
898 Add a function EC_GROUP_check() that makes some sanity tests
899 on a EC_GROUP, its generator and order. This includes
900 EC_GROUP_check_discriminant().
901 [Nils Larsch <nla@trustcenter.de>]
903 *) Add ECDSA in new directory crypto/ecdsa/.
905 Add applications 'openssl ecparam' and 'openssl ecdsa'
906 (these are based on 'openssl dsaparam' and 'openssl dsa').
908 ECDSA support is also included in various other files across the
909 library. Most notably,
910 - 'openssl req' now has a '-newkey ecdsa:file' option;
911 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
912 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
913 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
914 them suitable for ECDSA where domain parameters must be
915 extracted before the specific public key;
916 - ECDSA engine support has been added.
917 [Nils Larsch <nla@trustcenter.de>]
919 *) Include some named elliptic curves, and add OIDs from X9.62,
920 SECG, and WAP/WTLS. Each curve can be obtained from the new
922 EC_GROUP_new_by_curve_name(),
923 and the list of available named curves can be obtained with
924 EC_get_builtin_curves().
925 Also add a 'curve_name' member to EC_GROUP objects, which can be
927 EC_GROUP_set_curve_name()
928 EC_GROUP_get_curve_name()
929 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
931 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
932 was actually never needed) and in BN_mul(). The removal in BN_mul()
933 required a small change in bn_mul_part_recursive() and the addition
934 of the functions bn_cmp_part_words(), bn_sub_part_words() and
935 bn_add_part_words(), which do the same thing as bn_cmp_words(),
936 bn_sub_words() and bn_add_words() except they take arrays with
940 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
942 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
943 The value now differs depending on if you build for FIPS or not.
944 BEWARE! A program linked with a shared FIPSed libcrypto can't be
945 safely run with a non-FIPSed libcrypto, as it may crash because of
946 the difference induced by this change.
949 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
951 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
952 (part of SSL_OP_ALL). This option used to disable the
953 countermeasure against man-in-the-middle protocol-version
954 rollback in the SSL 2.0 server implementation, which is a bad
955 idea. (CVE-2005-2969)
957 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
958 for Information Security, National Institute of Advanced Industrial
959 Science and Technology [AIST], Japan)]
961 *) Minimal support for X9.31 signatures and PSS padding modes. This is
962 mainly for FIPS compliance and not fully integrated at this stage.
965 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
966 the exponentiation using a fixed-length exponent. (Otherwise,
967 the information leaked through timing could expose the secret key
968 after many signatures; cf. Bleichenbacher's attack on DSA with
972 *) Make a new fixed-window mod_exp implementation the default for
973 RSA, DSA, and DH private-key operations so that the sequence of
974 squares and multiplies and the memory access pattern are
975 independent of the particular secret key. This will mitigate
976 cache-timing and potential related attacks.
978 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
979 and this is automatically used by BN_mod_exp_mont() if the new flag
980 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
981 will use this BN flag for private exponents unless the flag
982 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
983 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
985 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
987 *) Change the client implementation for SSLv23_method() and
988 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
989 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
990 (Previously, the SSL 2.0 backwards compatible Client Hello
991 message format would be used even with SSL_OP_NO_SSLv2.)
994 *) Add support for smime-type MIME parameter in S/MIME messages which some
998 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
999 a threadsafe manner. Modify rsa code to use new function and add calls
1000 to dsa and dh code (which had race conditions before).
1003 *) Include the fixed error library code in the C error file definitions
1004 instead of fixing them up at runtime. This keeps the error code
1005 structures constant.
1008 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1010 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1013 *) Fixes for newer kerberos headers. NB: the casts are needed because
1014 the 'length' field is signed on one version and unsigned on another
1015 with no (?) obvious way to tell the difference, without these VC++
1016 complains. Also the "definition" of FAR (blank) is no longer included
1017 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1018 some needed definitions.
1021 *) Undo Cygwin change.
1024 *) Added support for proxy certificates according to RFC 3820.
1025 Because they may be a security thread to unaware applications,
1026 they must be explicitely allowed in run-time. See
1027 docs/HOWTO/proxy_certificates.txt for further information.
1030 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1032 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1033 server and client random values. Previously
1034 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1035 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1037 This change has negligible security impact because:
1039 1. Server and client random values still have 24 bytes of pseudo random
1042 2. Server and client random values are sent in the clear in the initial
1045 3. The master secret is derived using the premaster secret (48 bytes in
1046 size for static RSA ciphersuites) as well as client server and random
1049 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1052 [Stephen Henson, reported by UK NISCC]
1054 *) Use Windows randomness collection on Cygwin.
1057 *) Fix hang in EGD/PRNGD query when communication socket is closed
1058 prematurely by EGD/PRNGD.
1059 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1061 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1064 *) Back-port of selected performance improvements from development
1065 branch, as well as improved support for PowerPC platforms.
1068 *) Add lots of checks for memory allocation failure, error codes to indicate
1069 failure and freeing up memory if a failure occurs.
1070 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1072 *) Add new -passin argument to dgst.
1075 *) Perform some character comparisons of different types in X509_NAME_cmp:
1076 this is needed for some certificates that reencode DNs into UTF8Strings
1077 (in violation of RFC3280) and can't or wont issue name rollover
1081 *) Make an explicit check during certificate validation to see that
1082 the CA setting in each certificate on the chain is correct. As a
1083 side effect always do the following basic checks on extensions,
1084 not just when there's an associated purpose to the check:
1086 - if there is an unhandled critical extension (unless the user
1087 has chosen to ignore this fault)
1088 - if the path length has been exceeded (if one is set at all)
1089 - that certain extensions fit the associated purpose (if one has
1093 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1095 *) Avoid a race condition when CRLs are checked in a multi threaded
1096 environment. This would happen due to the reordering of the revoked
1097 entries during signature checking and serial number lookup. Now the
1098 encoding is cached and the serial number sort performed under a lock.
1099 Add new STACK function sk_is_sorted().
1102 *) Add Delta CRL to the extension code.
1105 *) Various fixes to s3_pkt.c so alerts are sent properly.
1106 [David Holmes <d.holmes@f5.com>]
1108 *) Reduce the chances of duplicate issuer name and serial numbers (in
1109 violation of RFC3280) using the OpenSSL certificate creation utilities.
1110 This is done by creating a random 64 bit value for the initial serial
1111 number when a serial number file is created or when a self signed
1112 certificate is created using 'openssl req -x509'. The initial serial
1113 number file is created using 'openssl x509 -next_serial' in CA.pl
1114 rather than being initialized to 1.
1117 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1119 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1120 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1121 [Joe Orton, Steve Henson]
1123 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1125 [Joe Orton, Steve Henson]
1127 *) Make it possible to have multiple active certificates with the same
1128 subject in the CA index file. This is done only if the keyword
1129 'unique_subject' is set to 'no' in the main CA section (default
1130 if 'CA_default') of the configuration file. The value is saved
1131 with the database itself in a separate index attribute file,
1132 named like the index file with '.attr' appended to the name.
1135 *) X509 verify fixes. Disable broken certificate workarounds when
1136 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1137 keyUsage extension present. Don't accept CRLs with unhandled critical
1138 extensions: since verify currently doesn't process CRL extensions this
1139 rejects a CRL with *any* critical extensions. Add new verify error codes
1143 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1144 A clarification of RFC2560 will require the use of OCTET STRINGs and
1145 some implementations cannot handle the current raw format. Since OpenSSL
1146 copies and compares OCSP nonces as opaque blobs without any attempt at
1147 parsing them this should not create any compatibility issues.
1150 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1151 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1152 this HMAC (and other) operations are several times slower than OpenSSL
1156 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1157 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1159 *) Use the correct content when signing type "other".
1162 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1164 *) Fix various bugs revealed by running the NISCC test suite:
1166 Stop out of bounds reads in the ASN1 code when presented with
1167 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1169 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1171 If verify callback ignores invalid public key errors don't try to check
1172 certificate signature with the NULL public key.
1176 *) New -ignore_err option in ocsp application to stop the server
1177 exiting on the first error in a request.
1180 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1181 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1185 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1186 extra data after the compression methods not only for TLS 1.0
1187 but also for SSL 3.0 (as required by the specification).
1188 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1190 *) Change X509_certificate_type() to mark the key as exported/exportable
1191 when it's 512 *bits* long, not 512 bytes.
1194 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1195 blocks during encryption.
1198 *) Various fixes to base64 BIO and non blocking I/O. On write
1199 flushes were not handled properly if the BIO retried. On read
1200 data was not being buffered properly and had various logic bugs.
1201 This also affects blocking I/O when the data being decoded is a
1205 *) Various S/MIME bugfixes and compatibility changes:
1206 output correct application/pkcs7 MIME type if
1207 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1208 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1209 of files as .eml work). Correctly handle very long lines in MIME
1213 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1215 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1216 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1217 a protocol version number mismatch like a decryption error
1218 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1221 *) Turn on RSA blinding by default in the default implementation
1222 to avoid a timing attack. Applications that don't want it can call
1223 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1224 They would be ill-advised to do so in most cases.
1225 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1227 *) Change RSA blinding code so that it works when the PRNG is not
1228 seeded (in this case, the secret RSA exponent is abused as
1229 an unpredictable seed -- if it is not unpredictable, there
1230 is no point in blinding anyway). Make RSA blinding thread-safe
1231 by remembering the creator's thread ID in rsa->blinding and
1232 having all other threads use local one-time blinding factors
1233 (this requires more computation than sharing rsa->blinding, but
1234 avoids excessive locking; and if an RSA object is not shared
1235 between threads, blinding will still be very fast).
1238 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1239 ENGINE as defaults for all supported algorithms irrespective of
1240 the 'flags' parameter. 'flags' is now honoured, so applications
1241 should make sure they are passing it correctly.
1244 *) Target "mingw" now allows native Windows code to be generated in
1245 the Cygwin environment as well as with the MinGW compiler.
1248 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1250 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1251 via timing by performing a MAC computation even if incorrrect
1252 block cipher padding has been found. This is a countermeasure
1253 against active attacks where the attacker has to distinguish
1254 between bad padding and a MAC verification error. (CVE-2003-0078)
1256 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1257 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1258 Martin Vuagnoux (EPFL, Ilion)]
1260 *) Make the no-err option work as intended. The intention with no-err
1261 is not to have the whole error stack handling routines removed from
1262 libcrypto, it's only intended to remove all the function name and
1263 reason texts, thereby removing some of the footprint that may not
1264 be interesting if those errors aren't displayed anyway.
1266 NOTE: it's still possible for any application or module to have it's
1267 own set of error texts inserted. The routines are there, just not
1268 used by default when no-err is given.
1271 *) Add support for FreeBSD on IA64.
1272 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1274 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1275 Kerberos function mit_des_cbc_cksum(). Before this change,
1276 the value returned by DES_cbc_cksum() was like the one from
1277 mit_des_cbc_cksum(), except the bytes were swapped.
1278 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1280 *) Allow an application to disable the automatic SSL chain building.
1281 Before this a rather primitive chain build was always performed in
1282 ssl3_output_cert_chain(): an application had no way to send the
1283 correct chain if the automatic operation produced an incorrect result.
1285 Now the chain builder is disabled if either:
1287 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1289 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1291 The reasoning behind this is that an application would not want the
1292 auto chain building to take place if extra chain certificates are
1293 present and it might also want a means of sending no additional
1294 certificates (for example the chain has two certificates and the
1298 *) Add the possibility to build without the ENGINE framework.
1299 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1301 *) Under Win32 gmtime() can return NULL: check return value in
1302 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1305 *) DSA routines: under certain error conditions uninitialized BN objects
1306 could be freed. Solution: make sure initialization is performed early
1307 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1308 Nils Larsch <nla@trustcenter.de> via PR#459)
1311 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1312 checked on reconnect on the client side, therefore session resumption
1313 could still fail with a "ssl session id is different" error. This
1314 behaviour is masked when SSL_OP_ALL is used due to
1315 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1316 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1317 followup to PR #377.
1320 *) IA-32 assembler support enhancements: unified ELF targets, support
1321 for SCO/Caldera platforms, fix for Cygwin shared build.
1324 *) Add support for FreeBSD on sparc64. As a consequence, support for
1325 FreeBSD on non-x86 processors is separate from x86 processors on
1326 the config script, much like the NetBSD support.
1327 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1329 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1331 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1334 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1335 code (06) was taken as the first octet of the session ID and the last
1336 octet was ignored consequently. As a result SSLv2 client side session
1337 caching could not have worked due to the session ID mismatch between
1339 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1343 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1344 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1348 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1349 seems that in spite of existing for more than a year, many application
1350 author have done nothing to provide the necessary callbacks, which
1351 means that this particular engine will not work properly anywhere.
1352 This is a very unfortunate situation which forces us, in the name
1353 of usability, to give the hw_ncipher.c a static lock, which is part
1355 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1356 appear in 0.9.8 or later. We EXPECT application authors to have
1357 dealt properly with this when 0.9.8 is released (unless we actually
1358 make such changes in the libcrypto locking code that changes will
1359 have to be made anyway).
1362 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1363 octets have been read, EOF or an error occurs. Without this change
1364 some truncated ASN1 structures will not produce an error.
1367 *) Disable Heimdal support, since it hasn't been fully implemented.
1368 Still give the possibility to force the use of Heimdal, but with
1369 warnings and a request that patches get sent to openssl-dev.
1372 *) Add the VC-CE target, introduce the WINCE sysname, and add
1373 INSTALL.WCE and appropriate conditionals to make it build.
1374 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1376 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1377 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1378 edit numbers of the version.
1379 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1381 *) Introduce safe string copy and catenation functions
1382 (BUF_strlcpy() and BUF_strlcat()).
1383 [Ben Laurie (CHATS) and Richard Levitte]
1385 *) Avoid using fixed-size buffers for one-line DNs.
1386 [Ben Laurie (CHATS)]
1388 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1389 resizing buffers containing secrets, and use where appropriate.
1390 [Ben Laurie (CHATS)]
1392 *) Avoid using fixed size buffers for configuration file location.
1393 [Ben Laurie (CHATS)]
1395 *) Avoid filename truncation for various CA files.
1396 [Ben Laurie (CHATS)]
1398 *) Use sizeof in preference to magic numbers.
1399 [Ben Laurie (CHATS)]
1401 *) Avoid filename truncation in cert requests.
1402 [Ben Laurie (CHATS)]
1404 *) Add assertions to check for (supposedly impossible) buffer
1406 [Ben Laurie (CHATS)]
1408 *) Don't cache truncated DNS entries in the local cache (this could
1409 potentially lead to a spoofing attack).
1410 [Ben Laurie (CHATS)]
1412 *) Fix various buffers to be large enough for hex/decimal
1413 representations in a platform independent manner.
1414 [Ben Laurie (CHATS)]
1416 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1417 resizing buffers containing secrets, and use where appropriate.
1418 [Ben Laurie (CHATS)]
1420 *) Add BIO_indent() to avoid much slightly worrying code to do
1422 [Ben Laurie (CHATS)]
1424 *) Convert sprintf()/BIO_puts() to BIO_printf().
1425 [Ben Laurie (CHATS)]
1427 *) buffer_gets() could terminate with the buffer only half
1429 [Ben Laurie (CHATS)]
1431 *) Add assertions to prevent user-supplied crypto functions from
1432 overflowing internal buffers by having large block sizes, etc.
1433 [Ben Laurie (CHATS)]
1435 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1437 [Ben Laurie (CHATS)]
1439 *) Eliminate unused copy of key in RC4.
1440 [Ben Laurie (CHATS)]
1442 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1443 [Ben Laurie (CHATS)]
1445 *) Fix off-by-one error in EGD path.
1446 [Ben Laurie (CHATS)]
1448 *) If RANDFILE path is too long, ignore instead of truncating.
1449 [Ben Laurie (CHATS)]
1451 *) Eliminate unused and incorrectly sized X.509 structure
1453 [Ben Laurie (CHATS)]
1455 *) Eliminate unused and dangerous function knumber().
1456 [Ben Laurie (CHATS)]
1458 *) Eliminate unused and dangerous structure, KSSL_ERR.
1459 [Ben Laurie (CHATS)]
1461 *) Protect against overlong session ID context length in an encoded
1462 session object. Since these are local, this does not appear to be
1464 [Ben Laurie (CHATS)]
1466 *) Change from security patch (see 0.9.6e below) that did not affect
1467 the 0.9.6 release series:
1469 Remote buffer overflow in SSL3 protocol - an attacker could
1470 supply an oversized master key in Kerberos-enabled versions.
1472 [Ben Laurie (CHATS)]
1474 *) Change the SSL kerb5 codes to match RFC 2712.
1477 *) Make -nameopt work fully for req and add -reqopt switch.
1478 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1480 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1481 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1483 *) Make sure tests can be performed even if the corresponding algorithms
1484 have been removed entirely. This was also the last step to make
1485 OpenSSL compilable with DJGPP under all reasonable conditions.
1486 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1488 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1489 to allow version independent disabling of normally unselected ciphers,
1490 which may be activated as a side-effect of selecting a single cipher.
1492 (E.g., cipher list string "RSA" enables ciphersuites that are left
1493 out of "ALL" because they do not provide symmetric encryption.
1494 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1495 [Lutz Jaenicke, Bodo Moeller]
1497 *) Add appropriate support for separate platform-dependent build
1498 directories. The recommended way to make a platform-dependent
1499 build directory is the following (tested on Linux), maybe with
1502 # Place yourself outside of the OpenSSL source tree. In
1503 # this example, the environment variable OPENSSL_SOURCE
1504 # is assumed to contain the absolute OpenSSL source directory.
1505 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1506 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1507 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1508 mkdir -p `dirname $F`
1509 ln -s $OPENSSL_SOURCE/$F $F
1512 To be absolutely sure not to disturb the source tree, a "make clean"
1513 is a good thing. If it isn't successfull, don't worry about it,
1514 it probably means the source directory is very clean.
1517 *) Make sure any ENGINE control commands make local copies of string
1518 pointers passed to them whenever necessary. Otherwise it is possible
1519 the caller may have overwritten (or deallocated) the original string
1520 data when a later ENGINE operation tries to use the stored values.
1521 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1523 *) Improve diagnostics in file reading and command-line digests.
1524 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1526 *) Add AES modes CFB and OFB to the object database. Correct an
1527 error in AES-CFB decryption.
1530 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1531 allows existing EVP_CIPHER_CTX structures to be reused after
1532 calling EVP_*Final(). This behaviour is used by encryption
1533 BIOs and some applications. This has the side effect that
1534 applications must explicitly clean up cipher contexts with
1535 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1538 *) Check the values of dna and dnb in bn_mul_recursive before calling
1539 bn_mul_comba (a non zero value means the a or b arrays do not contain
1540 n2 elements) and fallback to bn_mul_normal if either is not zero.
1543 *) Fix escaping of non-ASCII characters when using the -subj option
1544 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1547 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1548 form for "surname", serialNumber has no short form.
1549 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1550 therefore remove "mail" short name for "internet 7".
1551 The OID for unique identifiers in X509 certificates is
1552 x500UniqueIdentifier, not uniqueIdentifier.
1553 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1556 *) Add an "init" command to the ENGINE config module and auto initialize
1557 ENGINEs. Without any "init" command the ENGINE will be initialized
1558 after all ctrl commands have been executed on it. If init=1 the
1559 ENGINE is initailized at that point (ctrls before that point are run
1560 on the uninitialized ENGINE and after on the initialized one). If
1561 init=0 then the ENGINE will not be iniatialized at all.
1564 *) Fix the 'app_verify_callback' interface so that the user-defined
1565 argument is actually passed to the callback: In the
1566 SSL_CTX_set_cert_verify_callback() prototype, the callback
1567 declaration has been changed from
1570 int (*cb)(X509_STORE_CTX *,void *);
1571 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1572 i=s->ctx->app_verify_callback(&ctx)
1573 has been changed into
1574 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1576 To update applications using SSL_CTX_set_cert_verify_callback(),
1577 a dummy argument can be added to their callback functions.
1578 [D. K. Smetters <smetters@parc.xerox.com>]
1580 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1581 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1583 *) Add and OPENSSL_LOAD_CONF define which will cause
1584 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1585 This allows older applications to transparently support certain
1586 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1587 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1588 load the config file and OPENSSL_add_all_algorithms_conf() which will
1589 always load it have also been added.
1592 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1593 Adjust NIDs and EVP layer.
1594 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1596 *) Config modules support in openssl utility.
1598 Most commands now load modules from the config file,
1599 though in a few (such as version) this isn't done
1600 because it couldn't be used for anything.
1602 In the case of ca and req the config file used is
1603 the same as the utility itself: that is the -config
1604 command line option can be used to specify an
1608 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1609 use "openssl_conf" if filename is NULL use default openssl config file.
1612 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1613 config section name. Add a new flag to tolerate a missing config file
1614 and move code to CONF_modules_load_file().
1617 *) Support for crypto accelerator cards from Accelerated Encryption
1618 Processing, www.aep.ie. (Use engine 'aep')
1619 The support was copied from 0.9.6c [engine] and adapted/corrected
1620 to work with the new engine framework.
1621 [AEP Inc. and Richard Levitte]
1623 *) Support for SureWare crypto accelerator cards from Baltimore
1624 Technologies. (Use engine 'sureware')
1625 The support was copied from 0.9.6c [engine] and adapted
1626 to work with the new engine framework.
1629 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1630 make the newer ENGINE framework commands for the CHIL engine work.
1631 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1633 *) Make it possible to produce shared libraries on ReliantUNIX.
1634 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1636 *) Add the configuration target debug-linux-ppro.
1637 Make 'openssl rsa' use the general key loading routines
1638 implemented in apps.c, and make those routines able to
1639 handle the key format FORMAT_NETSCAPE and the variant
1641 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1643 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1644 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1646 *) Add -keyform to rsautl, and document -engine.
1647 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1649 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1650 BIO_R_NO_SUCH_FILE error code rather than the generic
1651 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1654 *) Add new functions
1656 ERR_peek_last_error_line
1657 ERR_peek_last_error_line_data.
1658 These are similar to
1661 ERR_peek_error_line_data,
1662 but report on the latest error recorded rather than the first one
1663 still in the error queue.
1664 [Ben Laurie, Bodo Moeller]
1666 *) default_algorithms option in ENGINE config module. This allows things
1668 default_algorithms = ALL
1669 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1672 *) Prelminary ENGINE config module.
1675 *) New experimental application configuration code.
1678 *) Change the AES code to follow the same name structure as all other
1679 symmetric ciphers, and behave the same way. Move everything to
1680 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1681 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1683 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1684 [Ben Laurie and Theo de Raadt]
1686 *) Add option to output public keys in req command.
1687 [Massimiliano Pala madwolf@openca.org]
1689 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1690 (up to about 10% better than before for P-192 and P-224).
1693 *) New functions/macros
1695 SSL_CTX_set_msg_callback(ctx, cb)
1696 SSL_CTX_set_msg_callback_arg(ctx, arg)
1697 SSL_set_msg_callback(ssl, cb)
1698 SSL_set_msg_callback_arg(ssl, arg)
1700 to request calling a callback function
1702 void cb(int write_p, int version, int content_type,
1703 const void *buf, size_t len, SSL *ssl, void *arg)
1705 whenever a protocol message has been completely received
1706 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1707 protocol version according to which the SSL library interprets
1708 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1709 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1710 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1711 specification (change_cipher_spec(20), alert(21), handshake(22)).
1712 'buf' and 'len' point to the actual message, 'ssl' to the
1713 SSL object, and 'arg' is the application-defined value set by
1714 SSL[_CTX]_set_msg_callback_arg().
1716 'openssl s_client' and 'openssl s_server' have new '-msg' options
1717 to enable a callback that displays all protocol messages.
1720 *) Change the shared library support so shared libraries are built as
1721 soon as the corresponding static library is finished, and thereby get
1722 openssl and the test programs linked against the shared library.
1723 This still only happens when the keyword "shard" has been given to
1724 the configuration scripts.
1726 NOTE: shared library support is still an experimental thing, and
1727 backward binary compatibility is still not guaranteed.
1728 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1730 *) Add support for Subject Information Access extension.
1731 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1733 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1734 additional bytes when new memory had to be allocated, not just
1735 when reusing an existing buffer.
1738 *) New command line and configuration option 'utf8' for the req command.
1739 This allows field values to be specified as UTF8 strings.
1742 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1743 runs for the former and machine-readable output for the latter.
1746 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1747 of the e-mail address in the DN (i.e., it will go into a certificate
1748 extension only). The new configuration file option 'email_in_dn = no'
1749 has the same effect.
1750 [Massimiliano Pala madwolf@openca.org]
1752 *) Change all functions with names starting with des_ to be starting
1753 with DES_ instead. Add wrappers that are compatible with libdes,
1754 but are named _ossl_old_des_*. Finally, add macros that map the
1755 des_* symbols to the corresponding _ossl_old_des_* if libdes
1756 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1757 desired, the des_* symbols will be mapped to DES_*, with one
1760 Since we provide two compatibility mappings, the user needs to
1761 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1762 compatibility is desired. The default (i.e., when that macro
1763 isn't defined) is OpenSSL 0.9.6c compatibility.
1765 There are also macros that enable and disable the support of old
1766 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1767 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1768 are defined, the default will apply: to support the old des routines.
1770 In either case, one must include openssl/des.h to get the correct
1771 definitions. Do not try to just include openssl/des_old.h, that
1774 NOTE: This is a major break of an old API into a new one. Software
1775 authors are encouraged to switch to the DES_ style functions. Some
1776 time in the future, des_old.h and the libdes compatibility functions
1777 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1778 default), and then completely removed.
1781 *) Test for certificates which contain unsupported critical extensions.
1782 If such a certificate is found during a verify operation it is
1783 rejected by default: this behaviour can be overridden by either
1784 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1785 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1786 X509_supported_extension() has also been added which returns 1 if a
1787 particular extension is supported.
1790 *) Modify the behaviour of EVP cipher functions in similar way to digests
1791 to retain compatibility with existing code.
1794 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1795 compatibility with existing code. In particular the 'ctx' parameter does
1796 not have to be to be initialized before the call to EVP_DigestInit() and
1797 it is tidied up after a call to EVP_DigestFinal(). New function
1798 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1799 EVP_MD_CTX_copy() changed to not require the destination to be
1800 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1801 requires the destination to be valid.
1803 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1804 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1807 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1808 so that complete 'Handshake' protocol structures are kept in memory
1809 instead of overwriting 'msg_type' and 'length' with 'body' data.
1812 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1813 [Massimo Santin via Richard Levitte]
1815 *) Major restructuring to the underlying ENGINE code. This includes
1816 reduction of linker bloat, separation of pure "ENGINE" manipulation
1817 (initialisation, etc) from functionality dealing with implementations
1818 of specific crypto iterfaces. This change also introduces integrated
1819 support for symmetric ciphers and digest implementations - so ENGINEs
1820 can now accelerate these by providing EVP_CIPHER and EVP_MD
1821 implementations of their own. This is detailed in crypto/engine/README
1822 as it couldn't be adequately described here. However, there are a few
1823 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1824 were changed in the original introduction of ENGINE code have now
1825 reverted back - the hooking from this code to ENGINE is now a good
1826 deal more passive and at run-time, operations deal directly with
1827 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1828 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1829 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1830 they were not being used by the framework as there is no concept of a
1831 BIGNUM_METHOD and they could not be generalised to the new
1832 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1833 ENGINE_cpy() has been removed as it cannot be consistently defined in
1837 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1840 *) Change mkdef.pl to sort symbols that get the same entry number,
1841 and make sure the automatically generated functions ERR_load_*
1842 become part of libeay.num as well.
1845 *) New function SSL_renegotiate_pending(). This returns true once
1846 renegotiation has been requested (either SSL_renegotiate() call
1847 or HelloRequest/ClientHello receveived from the peer) and becomes
1848 false once a handshake has been completed.
1849 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1850 sends a HelloRequest, but does not ensure that a handshake takes
1851 place. SSL_renegotiate_pending() is useful for checking if the
1852 client has followed the request.)
1855 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1856 By default, clients may request session resumption even during
1857 renegotiation (if session ID contexts permit); with this option,
1858 session resumption is possible only in the first handshake.
1860 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1861 more bits available for options that should not be part of
1862 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1865 *) Add some demos for certificate and certificate request creation.
1868 *) Make maximum certificate chain size accepted from the peer application
1869 settable (SSL*_get/set_max_cert_list()), as proposed by
1870 "Douglas E. Engert" <deengert@anl.gov>.
1873 *) Add support for shared libraries for Unixware-7
1874 (Boyd Lynn Gerber <gerberb@zenez.com>).
1877 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1878 be done prior to destruction. Use this to unload error strings from
1879 ENGINEs that load their own error strings. NB: This adds two new API
1880 functions to "get" and "set" this destroy handler in an ENGINE.
1883 *) Alter all existing ENGINE implementations (except "openssl" and
1884 "openbsd") to dynamically instantiate their own error strings. This
1885 makes them more flexible to be built both as statically-linked ENGINEs
1886 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1887 Also, add stub code to each that makes building them as self-contained
1888 shared-libraries easier (see README.ENGINE).
1891 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1892 implementations into applications that are completely implemented in
1893 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1894 commands that can be used to configure what shared-library to load and
1895 to control aspects of the way it is handled. Also, made an update to
1896 the README.ENGINE file that brings its information up-to-date and
1897 provides some information and instructions on the "dynamic" ENGINE
1898 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1901 *) Make it possible to unload ranges of ERR strings with a new
1902 "ERR_unload_strings" function.
1905 *) Add a copy() function to EVP_MD.
1908 *) Make EVP_MD routines take a context pointer instead of just the
1909 md_data void pointer.
1912 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1913 that the digest can only process a single chunk of data
1914 (typically because it is provided by a piece of
1915 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1916 is only going to provide a single chunk of data, and hence the
1917 framework needn't accumulate the data for oneshot drivers.
1920 *) As with "ERR", make it possible to replace the underlying "ex_data"
1921 functions. This change also alters the storage and management of global
1922 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1923 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1924 index counters. The API functions that use this state have been changed
1925 to take a "class_index" rather than pointers to the class's local STACK
1926 and counter, and there is now an API function to dynamically create new
1927 classes. This centralisation allows us to (a) plug a lot of the
1928 thread-safety problems that existed, and (b) makes it possible to clean
1929 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1930 such data would previously have always leaked in application code and
1931 workarounds were in place to make the memory debugging turn a blind eye
1932 to it. Application code that doesn't use this new function will still
1933 leak as before, but their memory debugging output will announce it now
1934 rather than letting it slide.
1936 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1937 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1938 has a return value to indicate success or failure.
1941 *) Make it possible to replace the underlying "ERR" functions such that the
1942 global state (2 LHASH tables and 2 locks) is only used by the "default"
1943 implementation. This change also adds two functions to "get" and "set"
1944 the implementation prior to it being automatically set the first time
1945 any other ERR function takes place. Ie. an application can call "get",
1946 pass the return value to a module it has just loaded, and that module
1947 can call its own "set" function using that value. This means the
1948 module's "ERR" operations will use (and modify) the error state in the
1949 application and not in its own statically linked copy of OpenSSL code.
1952 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1953 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1954 the operation, and provides a more encapsulated way for external code
1955 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1956 to use these functions rather than manually incrementing the counts.
1958 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1961 *) Add EVP test program.
1964 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1967 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1968 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1969 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1970 These allow a CRL to be built without having to access X509_CRL fields
1971 directly. Modify 'ca' application to use new functions.
1974 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1975 bug workarounds. Rollback attack detection is a security feature.
1976 The problem will only arise on OpenSSL servers when TLSv1 is not
1977 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1978 Software authors not wanting to support TLSv1 will have special reasons
1979 for their choice and can explicitly enable this option.
1980 [Bodo Moeller, Lutz Jaenicke]
1982 *) Rationalise EVP so it can be extended: don't include a union of
1983 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1984 (similar to those existing for EVP_CIPHER_CTX).
1989 EVP_MD_CTX_init(&md); /* new function call */
1990 EVP_DigestInit(&md, EVP_sha1());
1991 EVP_DigestUpdate(&md, in, len);
1992 EVP_DigestFinal(&md, out, NULL);
1993 EVP_MD_CTX_cleanup(&md); /* new function call */
1997 *) Make DES key schedule conform to the usual scheme, as well as
1998 correcting its structure. This means that calls to DES functions
1999 now have to pass a pointer to a des_key_schedule instead of a
2000 plain des_key_schedule (which was actually always a pointer
2003 des_key_schedule ks;
2005 des_set_key_checked(..., &ks);
2006 des_ncbc_encrypt(..., &ks, ...);
2008 (Note that a later change renames 'des_...' into 'DES_...'.)
2011 *) Initial reduction of linker bloat: the use of some functions, such as
2012 PEM causes large amounts of unused functions to be linked in due to
2013 poor organisation. For example pem_all.c contains every PEM function
2014 which has a knock on effect of linking in large amounts of (unused)
2015 ASN1 code. Grouping together similar functions and splitting unrelated
2016 functions prevents this.
2019 *) Cleanup of EVP macros.
2022 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2023 correct _ecb suffix.
2026 *) Add initial OCSP responder support to ocsp application. The
2027 revocation information is handled using the text based index
2028 use by the ca application. The responder can either handle
2029 requests generated internally, supplied in files (for example
2030 via a CGI script) or using an internal minimal server.
2033 *) Add configuration choices to get zlib compression for TLS.
2036 *) Changes to Kerberos SSL for RFC 2712 compliance:
2037 1. Implemented real KerberosWrapper, instead of just using
2038 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2039 2. Implemented optional authenticator field of KerberosWrapper.
2041 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2042 and authenticator structs; see crypto/krb5/.
2044 Generalized Kerberos calls to support multiple Kerberos libraries.
2045 [Vern Staats <staatsvr@asc.hpc.mil>,
2046 Jeffrey Altman <jaltman@columbia.edu>
2047 via Richard Levitte]
2049 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2050 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2051 values for each of the key sizes rather than having just
2052 parameters (and 'speed' generating keys each time).
2055 *) Speed up EVP routines.
2058 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2059 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2060 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2061 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2063 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2064 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2065 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2068 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2070 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2073 *) Added the OS2-EMX target.
2074 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2076 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2077 to support NCONF routines in extension code. New function CONF_set_nconf()
2078 to allow functions which take an NCONF to also handle the old LHASH
2079 structure: this means that the old CONF compatible routines can be
2080 retained (in particular wrt extensions) without having to duplicate the
2081 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2084 *) Enhance the general user interface with mechanisms for inner control
2085 and with possibilities to have yes/no kind of prompts.
2088 *) Change all calls to low level digest routines in the library and
2089 applications to use EVP. Add missing calls to HMAC_cleanup() and
2090 don't assume HMAC_CTX can be copied using memcpy().
2091 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2093 *) Add the possibility to control engines through control names but with
2094 arbitrary arguments instead of just a string.
2095 Change the key loaders to take a UI_METHOD instead of a callback
2096 function pointer. NOTE: this breaks binary compatibility with earlier
2097 versions of OpenSSL [engine].
2098 Adapt the nCipher code for these new conditions and add a card insertion
2102 *) Enhance the general user interface with mechanisms to better support
2103 dialog box interfaces, application-defined prompts, the possibility
2104 to use defaults (for example default passwords from somewhere else)
2105 and interrupts/cancellations.
2108 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2109 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2112 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2113 tidy up some unnecessarily weird code in 'sk_new()').
2114 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2116 *) Change the key loading routines for ENGINEs to use the same kind
2117 callback (pem_password_cb) as all other routines that need this
2121 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2122 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2123 than this minimum value is recommended.
2126 *) New random seeder for OpenVMS, using the system process statistics
2127 that are easily reachable.
2130 *) Windows apparently can't transparently handle global
2131 variables defined in DLLs. Initialisations such as:
2133 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2135 wont compile. This is used by the any applications that need to
2136 declare their own ASN1 modules. This was fixed by adding the option
2137 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2138 needed for static libraries under Win32.
2141 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2142 setting of purpose and trust fields. New X509_STORE trust and
2143 purpose functions and tidy up setting in other SSL functions.
2146 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2147 structure. These are inherited by X509_STORE_CTX when it is
2148 initialised. This allows various defaults to be set in the
2149 X509_STORE structure (such as flags for CRL checking and custom
2150 purpose or trust settings) for functions which only use X509_STORE_CTX
2151 internally such as S/MIME.
2153 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2154 trust settings if they are not set in X509_STORE. This allows X509_STORE
2155 purposes and trust (in S/MIME for example) to override any set by default.
2157 Add command line options for CRL checking to smime, s_client and s_server
2161 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2162 are set then the CRL is looked up in the X509_STORE structure and
2163 its validity and signature checked, then if the certificate is found
2164 in the CRL the verify fails with a revoked error.
2166 Various new CRL related callbacks added to X509_STORE_CTX structure.
2168 Command line options added to 'verify' application to support this.
2170 This needs some additional work, such as being able to handle multiple
2171 CRLs with different times, extension based lookup (rather than just
2172 by subject name) and ultimately more complete V2 CRL extension
2176 *) Add a general user interface API (crypto/ui/). This is designed
2177 to replace things like des_read_password and friends (backward
2178 compatibility functions using this new API are provided).
2179 The purpose is to remove prompting functions from the DES code
2180 section as well as provide for prompting through dialog boxes in
2181 a window system and the like.
2184 *) Add "ex_data" support to ENGINE so implementations can add state at a
2185 per-structure level rather than having to store it globally.
2188 *) Make it possible for ENGINE structures to be copied when retrieved by
2189 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2190 This causes the "original" ENGINE structure to act like a template,
2191 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2192 operational state can be localised to each ENGINE structure, despite the
2193 fact they all share the same "methods". New ENGINE structures returned in
2194 this case have no functional references and the return value is the single
2195 structural reference. This matches the single structural reference returned
2196 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2200 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2201 needs to match any other type at all we need to manually clear the
2205 *) Changes to the "openssl engine" utility to include;
2206 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2207 about an ENGINE's available control commands.
2208 - executing control commands from command line arguments using the
2209 '-pre' and '-post' switches. '-post' is only used if '-t' is
2210 specified and the ENGINE is successfully initialised. The syntax for
2211 the individual commands are colon-separated, for example;
2212 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2215 *) New dynamic control command support for ENGINEs. ENGINEs can now
2216 declare their own commands (numbers), names (strings), descriptions,
2217 and input types for run-time discovery by calling applications. A
2218 subset of these commands are implicitly classed as "executable"
2219 depending on their input type, and only these can be invoked through
2220 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2221 can be based on user input, config files, etc). The distinction is
2222 that "executable" commands cannot return anything other than a boolean
2223 result and can only support numeric or string input, whereas some
2224 discoverable commands may only be for direct use through
2225 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2226 pointers, or other custom uses. The "executable" commands are to
2227 support parameterisations of ENGINE behaviour that can be
2228 unambiguously defined by ENGINEs and used consistently across any
2229 OpenSSL-based application. Commands have been added to all the
2230 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2231 control over shared-library paths without source code alterations.
2234 *) Changed all ENGINE implementations to dynamically allocate their
2235 ENGINEs rather than declaring them statically. Apart from this being
2236 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2237 this also allows the implementations to compile without using the
2238 internal engine_int.h header.
2241 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2242 'const' value. Any code that should be able to modify a RAND_METHOD
2243 should already have non-const pointers to it (ie. they should only
2244 modify their own ones).
2247 *) Made a variety of little tweaks to the ENGINE code.
2248 - "atalla" and "ubsec" string definitions were moved from header files
2249 to C code. "nuron" string definitions were placed in variables
2250 rather than hard-coded - allowing parameterisation of these values
2251 later on via ctrl() commands.
2252 - Removed unused "#if 0"'d code.
2253 - Fixed engine list iteration code so it uses ENGINE_free() to release
2254 structural references.
2255 - Constified the RAND_METHOD element of ENGINE structures.
2256 - Constified various get/set functions as appropriate and added
2257 missing functions (including a catch-all ENGINE_cpy that duplicates
2258 all ENGINE values onto a new ENGINE except reference counts/state).
2259 - Removed NULL parameter checks in get/set functions. Setting a method
2260 or function to NULL is a way of cancelling out a previously set
2261 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2262 and doesn't justify the extra error symbols and code.
2263 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2264 flags from engine_int.h to engine.h.
2265 - Changed prototypes for ENGINE handler functions (init(), finish(),
2266 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2269 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2270 to the algorithm using long division. The binary algorithm can be
2271 used only if the modulus is odd. On 32-bit systems, it is faster
2272 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2273 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2274 up to 450 bits. In 64-bit environments, the binary algorithm
2275 appears to be advantageous for much longer moduli; here we use it
2276 for moduli up to 2048 bits.
2279 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2280 could not support the combine flag in choice fields.
2283 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2284 extensions from a certificate request to the certificate.
2287 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2288 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2289 file: this allows the display of the certificate about to be
2290 signed to be customised, to allow certain fields to be included
2291 or excluded and extension details. The old system didn't display
2292 multicharacter strings properly, omitted fields not in the policy
2293 and couldn't display additional details such as extensions.
2296 *) Function EC_POINTs_mul for multiple scalar multiplication
2297 of an arbitrary number of elliptic curve points
2298 \sum scalars[i]*points[i],
2299 optionally including the generator defined for the EC_GROUP:
2300 scalar*generator + \sum scalars[i]*points[i].
2302 EC_POINT_mul is a simple wrapper function for the typical case
2303 that the point list has just one item (besides the optional
2307 *) First EC_METHODs for curves over GF(p):
2309 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2310 operations and provides various method functions that can also
2311 operate with faster implementations of modular arithmetic.
2313 EC_GFp_mont_method() reuses most functions that are part of
2314 EC_GFp_simple_method, but uses Montgomery arithmetic.
2316 [Bodo Moeller; point addition and point doubling
2317 implementation directly derived from source code provided by
2318 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2320 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2321 crypto/ec/ec_lib.c):
2323 Curves are EC_GROUP objects (with an optional group generator)
2324 based on EC_METHODs that are built into the library.
2326 Points are EC_POINT objects based on EC_GROUP objects.
2328 Most of the framework would be able to handle curves over arbitrary
2329 finite fields, but as there are no obvious types for fields other
2330 than GF(p), some functions are limited to that for now.
2333 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2334 that the file contains a complete HTTP response.
2337 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2338 change the def and num file printf format specifier from "%-40sXXX"
2339 to "%-39s XXX". The latter will always guarantee a space after the
2340 field while the former will cause them to run together if the field
2341 is 40 of more characters long.
2344 *) Constify the cipher and digest 'method' functions and structures
2345 and modify related functions to take constant EVP_MD and EVP_CIPHER
2349 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2350 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2353 *) Modify EVP_Digest*() routines so they now return values. Although the
2354 internal software routines can never fail additional hardware versions
2358 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2360 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2361 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2364 ERR_R_NESTED_ASN1_ERROR
2366 ERR_R_MISSING_ASN1_EOS
2367 were 4 .. 9, conflicting with
2368 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2370 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2371 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2373 Add new error code 'ERR_R_INTERNAL_ERROR'.
2376 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2380 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2381 sets the subject name for a new request or supersedes the
2382 subject name in a given request. Formats that can be parsed are
2383 'CN=Some Name, OU=myOU, C=IT'
2385 'CN=Some Name/OU=myOU/C=IT'.
2387 Add options '-batch' and '-verbose' to 'openssl req'.
2388 [Massimiliano Pala <madwolf@hackmasters.net>]
2390 *) Introduce the possibility to access global variables through
2391 functions on platform were that's the best way to handle exporting
2392 global variables in shared libraries. To enable this functionality,
2393 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2394 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2395 is normally done by Configure or something similar).
2397 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2398 in the source file (foo.c) like this:
2400 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2401 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2403 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2404 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2406 OPENSSL_DECLARE_GLOBAL(int,foo);
2407 #define foo OPENSSL_GLOBAL_REF(foo)
2408 OPENSSL_DECLARE_GLOBAL(double,bar);
2409 #define bar OPENSSL_GLOBAL_REF(bar)
2411 The #defines are very important, and therefore so is including the
2412 header file everywhere where the defined globals are used.
2414 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2415 of ASN.1 items, but that structure is a bit different.
2417 The largest change is in util/mkdef.pl which has been enhanced with
2418 better and easier to understand logic to choose which symbols should
2419 go into the Windows .def files as well as a number of fixes and code
2420 cleanup (among others, algorithm keywords are now sorted
2421 lexicographically to avoid constant rewrites).
2424 *) In BN_div() keep a copy of the sign of 'num' before writing the
2425 result to 'rm' because if rm==num the value will be overwritten
2426 and produce the wrong result if 'num' is negative: this caused
2427 problems with BN_mod() and BN_nnmod().
2430 *) Function OCSP_request_verify(). This checks the signature on an
2431 OCSP request and verifies the signer certificate. The signer
2432 certificate is just checked for a generic purpose and OCSP request
2436 *) Add OCSP_check_validity() function to check the validity of OCSP
2437 responses. OCSP responses are prepared in real time and may only
2438 be a few seconds old. Simply checking that the current time lies
2439 between thisUpdate and nextUpdate max reject otherwise valid responses
2440 caused by either OCSP responder or client clock inaccuracy. Instead
2441 we allow thisUpdate and nextUpdate to fall within a certain period of
2442 the current time. The age of the response can also optionally be
2443 checked. Two new options -validity_period and -status_age added to
2447 *) If signature or public key algorithm is unrecognized print out its
2448 OID rather that just UNKNOWN.
2451 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2452 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2453 ID to be generated from the issuer certificate alone which can then be
2454 passed to OCSP_id_issuer_cmp().
2457 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2458 ASN1 modules to export functions returning ASN1_ITEM pointers
2459 instead of the ASN1_ITEM structures themselves. This adds several
2460 new macros which allow the underlying ASN1 function/structure to
2461 be accessed transparently. As a result code should not use ASN1_ITEM
2462 references directly (such as &X509_it) but instead use the relevant
2463 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2464 use of the new ASN1 code on platforms where exporting structures
2465 is problematical (for example in shared libraries) but exporting
2466 functions returning pointers to structures is not.
2469 *) Add support for overriding the generation of SSL/TLS session IDs.
2470 These callbacks can be registered either in an SSL_CTX or per SSL.
2471 The purpose of this is to allow applications to control, if they wish,
2472 the arbitrary values chosen for use as session IDs, particularly as it
2473 can be useful for session caching in multiple-server environments. A
2474 command-line switch for testing this (and any client code that wishes
2475 to use such a feature) has been added to "s_server".
2476 [Geoff Thorpe, Lutz Jaenicke]
2478 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2479 of the form '#if defined(...) || defined(...) || ...' and
2480 '#if !defined(...) && !defined(...) && ...'. This also avoids
2481 the growing number of special cases it was previously handling.
2484 *) Make all configuration macros available for application by making
2485 sure they are available in opensslconf.h, by giving them names starting
2486 with "OPENSSL_" to avoid conflicts with other packages and by making
2487 sure e_os2.h will cover all platform-specific cases together with
2489 Additionally, it is now possible to define configuration/platform-
2490 specific names (called "system identities"). In the C code, these
2491 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2492 macro with the name beginning with "OPENSSL_SYS_", which is determined
2493 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2497 *) New option -set_serial to 'req' and 'x509' this allows the serial
2498 number to use to be specified on the command line. Previously self
2499 signed certificates were hard coded with serial number 0 and the
2500 CA options of 'x509' had to use a serial number in a file which was
2504 *) New options to 'ca' utility to support V2 CRL entry extensions.
2505 Currently CRL reason, invalidity date and hold instruction are
2506 supported. Add new CRL extensions to V3 code and some new objects.
2509 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2510 disable standard block padding (aka PKCS#5 padding) in the EVP
2511 API, which was previously mandatory. This means that the data is
2512 not padded in any way and so the total length much be a multiple
2513 of the block size, otherwise an error occurs.
2516 *) Initial (incomplete) OCSP SSL support.
2519 *) New function OCSP_parse_url(). This splits up a URL into its host,
2520 port and path components: primarily to parse OCSP URLs. New -url
2521 option to ocsp utility.
2524 *) New nonce behavior. The return value of OCSP_check_nonce() now
2525 reflects the various checks performed. Applications can decide
2526 whether to tolerate certain situations such as an absent nonce
2527 in a response when one was present in a request: the ocsp application
2528 just prints out a warning. New function OCSP_add1_basic_nonce()
2529 this is to allow responders to include a nonce in a response even if
2530 the request is nonce-less.
2533 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2534 skipped when using openssl x509 multiple times on a single input file,
2535 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2538 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2539 set string type: to handle setting ASN1_TIME structures. Fix ca
2540 utility to correctly initialize revocation date of CRLs.
2543 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2544 the clients preferred ciphersuites and rather use its own preferences.
2545 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2546 Internet Explorer by ensuring unchanged hash method during stepup.
2547 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2550 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2551 to aes and add a new 'exist' option to print out symbols that don't
2555 *) Additional options to ocsp utility to allow flags to be set and
2556 additional certificates supplied.
2559 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2560 OCSP client a number of certificate to only verify the response
2564 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2565 handle the new API. Currently only ECB, CBC modes supported. Add new
2568 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2569 Encryption Standard (AES) Ciphersuites for Transport Layer
2570 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2571 not enabled by default and were not part of the "ALL" ciphersuite
2572 alias because they were not yet official; they could be
2573 explicitly requested by specifying the "AESdraft" ciphersuite
2574 group alias. In the final release of OpenSSL 0.9.7, the group
2575 alias is called "AES" and is part of "ALL".)
2576 [Ben Laurie, Steve Henson, Bodo Moeller]
2578 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2579 request to response.
2582 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2583 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2584 extract information from a certificate request. OCSP_response_create()
2585 creates a response and optionally adds a basic response structure.
2586 OCSP_basic_add1_status() adds a complete single response to a basic
2587 response and returns the OCSP_SINGLERESP structure just added (to allow
2588 extensions to be included for example). OCSP_basic_add1_cert() adds a
2589 certificate to a basic response and OCSP_basic_sign() signs a basic
2590 response with various flags. New helper functions ASN1_TIME_check()
2591 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2592 (converts ASN1_TIME to GeneralizedTime).
2595 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2596 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2597 structure from a certificate. X509_pubkey_digest() digests the public_key
2598 contents: this is used in various key identifiers.
2601 *) Make sk_sort() tolerate a NULL argument.
2602 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2604 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2605 passed by the function are trusted implicitly. If any of them signed the
2606 response then it is assumed to be valid and is not verified.
2609 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2610 to data. This was previously part of the PKCS7 ASN1 code. This
2611 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2612 [Steve Henson, reported by Kenneth R. Robinette
2613 <support@securenetterm.com>]
2615 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2616 routines: without these tracing memory leaks is very painful.
2617 Fix leaks in PKCS12 and PKCS7 routines.
2620 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2621 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2622 effectively meant GeneralizedTime would never be used. Now it
2623 is initialised to -1 but X509_time_adj() now has to check the value
2624 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2625 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2626 [Steve Henson, reported by Kenneth R. Robinette
2627 <support@securenetterm.com>]
2629 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2630 result in a zero length in the ASN1_INTEGER structure which was
2631 not consistent with the structure when d2i_ASN1_INTEGER() was used
2632 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2633 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2634 where it did not print out a minus for negative ASN1_INTEGER.
2637 *) Add summary printout to ocsp utility. The various functions which
2638 convert status values to strings have been renamed to:
2639 OCSP_response_status_str(), OCSP_cert_status_str() and
2640 OCSP_crl_reason_str() and are no longer static. New options
2641 to verify nonce values and to disable verification. OCSP response
2642 printout format cleaned up.
2645 *) Add additional OCSP certificate checks. These are those specified
2646 in RFC2560. This consists of two separate checks: the CA of the
2647 certificate being checked must either be the OCSP signer certificate
2648 or the issuer of the OCSP signer certificate. In the latter case the
2649 OCSP signer certificate must contain the OCSP signing extended key
2650 usage. This check is performed by attempting to match the OCSP
2651 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2652 in the OCSP_CERTID structures of the response.
2655 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2656 and related routines. This uses the standard OpenSSL certificate
2657 verify routines to perform initial checks (just CA validity) and
2658 to obtain the certificate chain. Then additional checks will be
2659 performed on the chain. Currently the root CA is checked to see
2660 if it is explicitly trusted for OCSP signing. This is used to set
2661 a root CA as a global signing root: that is any certificate that
2662 chains to that CA is an acceptable OCSP signing certificate.
2665 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2666 extensions from a separate configuration file.
2667 As when reading extensions from the main configuration file,
2668 the '-extensions ...' option may be used for specifying the
2670 [Massimiliano Pala <madwolf@comune.modena.it>]
2672 *) New OCSP utility. Allows OCSP requests to be generated or
2673 read. The request can be sent to a responder and the output
2674 parsed, outputed or printed in text form. Not complete yet:
2675 still needs to check the OCSP response validity.
2678 *) New subcommands for 'openssl ca':
2679 'openssl ca -status <serial>' prints the status of the cert with
2680 the given serial number (according to the index file).
2681 'openssl ca -updatedb' updates the expiry status of certificates
2683 [Massimiliano Pala <madwolf@comune.modena.it>]
2685 *) New '-newreq-nodes' command option to CA.pl. This is like
2686 '-newreq', but calls 'openssl req' with the '-nodes' option
2687 so that the resulting key is not encrypted.
2688 [Damien Miller <djm@mindrot.org>]
2690 *) New configuration for the GNU Hurd.
2691 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2693 *) Initial code to implement OCSP basic response verify. This
2694 is currently incomplete. Currently just finds the signer's
2695 certificate and verifies the signature on the response.
2698 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2699 value of OPENSSLDIR. This is available via the new '-d' option
2700 to 'openssl version', and is also included in 'openssl version -a'.
2703 *) Allowing defining memory allocation callbacks that will be given
2704 file name and line number information in additional arguments
2705 (a const char* and an int). The basic functionality remains, as
2706 well as the original possibility to just replace malloc(),
2707 realloc() and free() by functions that do not know about these
2708 additional arguments. To register and find out the current
2709 settings for extended allocation functions, the following
2710 functions are provided:
2712 CRYPTO_set_mem_ex_functions
2713 CRYPTO_set_locked_mem_ex_functions
2714 CRYPTO_get_mem_ex_functions
2715 CRYPTO_get_locked_mem_ex_functions
2717 These work the same way as CRYPTO_set_mem_functions and friends.
2718 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2719 extended allocation function is enabled.
2720 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2721 a conventional allocation function is enabled.
2722 [Richard Levitte, Bodo Moeller]
2724 *) Finish off removing the remaining LHASH function pointer casts.
2725 There should no longer be any prototype-casting required when using
2726 the LHASH abstraction, and any casts that remain are "bugs". See
2727 the callback types and macros at the head of lhash.h for details
2728 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2731 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2732 If /dev/[u]random devices are not available or do not return enough
2733 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2735 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2736 /etc/entropy will be queried once each in this sequence, quering stops
2737 when enough entropy was collected without querying more sockets.
2740 *) Change the Unix RAND_poll() variant to be able to poll several
2741 random devices, as specified by DEVRANDOM, until a sufficient amount
2742 of data has been collected. We spend at most 10 ms on each file
2743 (select timeout) and read in non-blocking mode. DEVRANDOM now
2744 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2745 (previously it was just the string "/dev/urandom"), so on typical
2746 platforms the 10 ms delay will never occur.
2747 Also separate out the Unix variant to its own file, rand_unix.c.
2748 For VMS, there's a currently-empty rand_vms.c.
2751 *) Move OCSP client related routines to ocsp_cl.c. These
2752 provide utility functions which an application needing
2753 to issue a request to an OCSP responder and analyse the
2754 response will typically need: as opposed to those which an
2755 OCSP responder itself would need which will be added later.
2757 OCSP_request_sign() signs an OCSP request with an API similar
2758 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2759 response. OCSP_response_get1_basic() extracts basic response
2760 from response. OCSP_resp_find_status(): finds and extracts status
2761 information from an OCSP_CERTID structure (which will be created
2762 when the request structure is built). These are built from lower
2763 level functions which work on OCSP_SINGLERESP structures but
2764 wont normally be used unless the application wishes to examine
2765 extensions in the OCSP response for example.
2767 Replace nonce routines with a pair of functions.
2768 OCSP_request_add1_nonce() adds a nonce value and optionally
2769 generates a random value. OCSP_check_nonce() checks the
2770 validity of the nonce in an OCSP response.
2773 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2774 This doesn't copy the supplied OCSP_CERTID and avoids the
2775 need to free up the newly created id. Change return type
2776 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2777 This can then be used to add extensions to the request.
2778 Deleted OCSP_request_new(), since most of its functionality
2779 is now in OCSP_REQUEST_new() (and the case insensitive name
2780 clash) apart from the ability to set the request name which
2781 will be added elsewhere.
2784 *) Update OCSP API. Remove obsolete extensions argument from
2785 various functions. Extensions are now handled using the new
2786 OCSP extension code. New simple OCSP HTTP function which
2787 can be used to send requests and parse the response.
2790 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2791 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2792 uses the special reorder version of SET OF to sort the attributes
2793 and reorder them to match the encoded order. This resolves a long
2794 standing problem: a verify on a PKCS7 structure just after signing
2795 it used to fail because the attribute order did not match the
2796 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2797 it uses the received order. This is necessary to tolerate some broken
2798 software that does not order SET OF. This is handled by encoding
2799 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2800 to produce the required SET OF.
2803 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2804 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2805 files to get correct declarations of the ASN.1 item variables.
2808 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2809 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2810 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2811 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2812 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2813 ASN1_ITEM and no wrapper functions.
2816 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2817 replace the old function pointer based I/O routines. Change most of
2818 the *_d2i_bio() and *_d2i_fp() functions to use these.
2821 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2822 lines, recognice more "algorithms" that can be deselected, and make
2823 it complain about algorithm deselection that isn't recognised.
2826 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2827 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2828 to use new functions. Add NO_ASN1_OLD which can be set to remove
2829 some old style ASN1 functions: this can be used to determine if old
2830 code will still work when these eventually go away.
2833 *) New extension functions for OCSP structures, these follow the
2834 same conventions as certificates and CRLs.
2837 *) New function X509V3_add1_i2d(). This automatically encodes and
2838 adds an extension. Its behaviour can be customised with various
2839 flags to append, replace or delete. Various wrappers added for
2840 certifcates and CRLs.
2843 *) Fix to avoid calling the underlying ASN1 print routine when
2844 an extension cannot be parsed. Correct a typo in the
2845 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2848 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2849 entries for variables.
2852 *) Add functionality to apps/openssl.c for detecting locking
2853 problems: As the program is single-threaded, all we have
2854 to do is register a locking callback using an array for
2855 storing which locks are currently held by the program.
2858 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2859 SSL_get_ex_data_X509_STORE_idx(), which is used in
2860 ssl_verify_cert_chain() and thus can be called at any time
2861 during TLS/SSL handshakes so that thread-safety is essential.
2862 Unfortunately, the ex_data design is not at all suited
2863 for multi-threaded use, so it probably should be abolished.
2866 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2867 [Broadcom, tweaked and integrated by Geoff Thorpe]
2869 *) Move common extension printing code to new function
2870 X509V3_print_extensions(). Reorganise OCSP print routines and
2871 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2874 *) New function X509_signature_print() to remove duplication in some
2878 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2879 set (this was treated exactly the same as SET OF previously). This
2880 is used to reorder the STACK representing the structure to match the
2881 encoding. This will be used to get round a problem where a PKCS7
2882 structure which was signed could not be verified because the STACK
2883 order did not reflect the encoded order.
2886 *) Reimplement the OCSP ASN1 module using the new code.
2889 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2890 for its ASN1 operations. The old style function pointers still exist
2891 for now but they will eventually go away.
2894 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2895 completely replaces the old ASN1 functionality with a table driven
2896 encoder and decoder which interprets an ASN1_ITEM structure describing
2897 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2898 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2899 has also been converted to the new form.
2902 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2903 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2904 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2905 for negative moduli.
2908 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2909 of not touching the result's sign bit.
2912 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2916 *) Changed the LHASH code to use prototypes for callbacks, and created
2917 macros to declare and implement thin (optionally static) functions
2918 that provide type-safety and avoid function pointer casting for the
2919 type-specific callbacks.
2922 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2924 [Veers Staats <staatsvr@asc.hpc.mil>,
2925 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2927 *) Reformat the FAQ so the different questions and answers can be divided
2928 in sections depending on the subject.
2931 *) Have the zlib compression code load ZLIB.DLL dynamically under
2935 *) New function BN_mod_sqrt for computing square roots modulo a prime
2936 (using the probabilistic Tonelli-Shanks algorithm unless
2937 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2938 be handled deterministically).
2939 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2941 *) Make BN_mod_inverse faster by explicitly handling small quotients
2942 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2943 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2946 *) New function BN_kronecker.
2949 *) Fix BN_gcd so that it works on negative inputs; the result is
2950 positive unless both parameters are zero.
2951 Previously something reasonably close to an infinite loop was
2952 possible because numbers could be growing instead of shrinking
2953 in the implementation of Euclid's algorithm.
2956 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2957 sign of the number in question.
2959 Fix BN_is_word(a,w) to work correctly for w == 0.
2961 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2962 because its test if the absolute value of 'a' equals 'w'.
2963 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2964 it exists mostly for use in the implementations of BN_is_zero(),
2965 BN_is_one(), and BN_is_word().
2968 *) New function BN_swap.
2971 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2972 the exponentiation functions are more likely to produce reasonable
2973 results on negative inputs.
2976 *) Change BN_mod_mul so that the result is always non-negative.
2977 Previously, it could be negative if one of the factors was negative;
2978 I don't think anyone really wanted that behaviour.
2981 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2982 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2983 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2984 and add new functions:
2993 BN_mod_lshift1_quick
2997 These functions always generate non-negative results.
2999 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3000 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3002 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3003 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3004 be reduced modulo m.
3005 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3008 The following entry accidentily appeared in the CHANGES file
3009 distributed with OpenSSL 0.9.7. The modifications described in
3010 it do *not* apply to OpenSSL 0.9.7.
3012 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3013 was actually never needed) and in BN_mul(). The removal in BN_mul()
3014 required a small change in bn_mul_part_recursive() and the addition
3015 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3016 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3017 bn_sub_words() and bn_add_words() except they take arrays with
3022 *) In 'openssl passwd', verify passwords read from the terminal
3023 unless the '-salt' option is used (which usually means that
3024 verification would just waste user's time since the resulting
3025 hash is going to be compared with some given password hash)
3026 or the new '-noverify' option is used.
3028 This is an incompatible change, but it does not affect
3029 non-interactive use of 'openssl passwd' (passwords on the command
3030 line, '-stdin' option, '-in ...' option) and thus should not
3034 *) Remove all references to RSAref, since there's no more need for it.
3037 *) Make DSO load along a path given through an environment variable
3038 (SHLIB_PATH) with shl_load().
3041 *) Constify the ENGINE code as a result of BIGNUM constification.
3042 Also constify the RSA code and most things related to it. In a
3043 few places, most notable in the depth of the ASN.1 code, ugly
3044 casts back to non-const were required (to be solved at a later
3048 *) Make it so the openssl application has all engines loaded by default.
3051 *) Constify the BIGNUM routines a little more.
3054 *) Add the following functions:
3056 ENGINE_load_cswift()
3058 ENGINE_load_atalla()
3060 ENGINE_load_builtin_engines()
3062 That way, an application can itself choose if external engines that
3063 are built-in in OpenSSL shall ever be used or not. The benefit is
3064 that applications won't have to be linked with libdl or other dso
3065 libraries unless it's really needed.
3067 Changed 'openssl engine' to load all engines on demand.
3068 Changed the engine header files to avoid the duplication of some
3069 declarations (they differed!).
3072 *) 'openssl engine' can now list capabilities.
3075 *) Better error reporting in 'openssl engine'.
3078 *) Never call load_dh_param(NULL) in s_server.
3081 *) Add engine application. It can currently list engines by name and
3082 identity, and test if they are actually available.
3085 *) Improve RPM specification file by forcing symbolic linking and making
3086 sure the installed documentation is also owned by root.root.
3087 [Damien Miller <djm@mindrot.org>]
3089 *) Give the OpenSSL applications more possibilities to make use of
3090 keys (public as well as private) handled by engines.
3093 *) Add OCSP code that comes from CertCo.
3096 *) Add VMS support for the Rijndael code.
3099 *) Added untested support for Nuron crypto accelerator.
3102 *) Add support for external cryptographic devices. This code was
3103 previously distributed separately as the "engine" branch.
3104 [Geoff Thorpe, Richard Levitte]
3106 *) Rework the filename-translation in the DSO code. It is now possible to
3107 have far greater control over how a "name" is turned into a filename
3108 depending on the operating environment and any oddities about the
3109 different shared library filenames on each system.
3112 *) Support threads on FreeBSD-elf in Configure.
3115 *) Fix for SHA1 assembly problem with MASM: it produces
3116 warnings about corrupt line number information when assembling
3117 with debugging information. This is caused by the overlapping
3119 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3122 NCONF_get_number() has no error checking at all. As a replacement,
3123 NCONF_get_number_e() is defined (_e for "error checking") and is
3124 promoted strongly. The old NCONF_get_number is kept around for
3125 binary backward compatibility.
3126 Make it possible for methods to load from something other than a BIO,
3127 by providing a function pointer that is given a name instead of a BIO.
3128 For example, this could be used to load configuration data from an
3132 *) Fix for non blocking accept BIOs. Added new I/O special reason
3133 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3134 with non blocking I/O was not possible because no retry code was
3135 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3139 *) Added the beginnings of Rijndael support.
3142 *) Fix for bug in DirectoryString mask setting. Add support for
3143 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3144 to allow certificate printing to more controllable, additional
3145 'certopt' option to 'x509' to allow new printing options to be
3149 *) Clean old EAY MD5 hack from e_os.h.
3152 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3154 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3155 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3156 [Joe Orton, Steve Henson]
3158 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3160 *) Fix additional bug revealed by the NISCC test suite:
3162 Stop bug triggering large recursion when presented with
3163 certain ASN.1 tags (CVE-2003-0851)
3166 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3168 *) Fix various bugs revealed by running the NISCC test suite:
3170 Stop out of bounds reads in the ASN1 code when presented with
3171 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3173 If verify callback ignores invalid public key errors don't try to check
3174 certificate signature with the NULL public key.
3178 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3179 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3183 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3184 extra data after the compression methods not only for TLS 1.0
3185 but also for SSL 3.0 (as required by the specification).
3186 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3188 *) Change X509_certificate_type() to mark the key as exported/exportable
3189 when it's 512 *bits* long, not 512 bytes.
3192 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3194 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3195 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3196 a protocol version number mismatch like a decryption error
3197 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3200 *) Turn on RSA blinding by default in the default implementation
3201 to avoid a timing attack. Applications that don't want it can call
3202 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3203 They would be ill-advised to do so in most cases.
3204 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3206 *) Change RSA blinding code so that it works when the PRNG is not
3207 seeded (in this case, the secret RSA exponent is abused as
3208 an unpredictable seed -- if it is not unpredictable, there
3209 is no point in blinding anyway). Make RSA blinding thread-safe
3210 by remembering the creator's thread ID in rsa->blinding and
3211 having all other threads use local one-time blinding factors
3212 (this requires more computation than sharing rsa->blinding, but
3213 avoids excessive locking; and if an RSA object is not shared
3214 between threads, blinding will still be very fast).
3217 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3219 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3220 via timing by performing a MAC computation even if incorrrect
3221 block cipher padding has been found. This is a countermeasure
3222 against active attacks where the attacker has to distinguish
3223 between bad padding and a MAC verification error. (CVE-2003-0078)
3225 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3226 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3227 Martin Vuagnoux (EPFL, Ilion)]
3229 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3231 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3232 memory from it's contents. This is done with a counter that will
3233 place alternating values in each byte. This can be used to solve
3234 two issues: 1) the removal of calls to memset() by highly optimizing
3235 compilers, and 2) cleansing with other values than 0, since those can
3236 be read through on certain media, for example a swap space on disk.
3239 *) Bugfix: client side session caching did not work with external caching,
3240 because the session->cipher setting was not restored when reloading
3241 from the external cache. This problem was masked, when
3242 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3243 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3246 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3247 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3248 [Zeev Lieber <zeev-l@yahoo.com>]
3250 *) Undo an undocumented change introduced in 0.9.6e which caused
3251 repeated calls to OpenSSL_add_all_ciphers() and
3252 OpenSSL_add_all_digests() to be ignored, even after calling
3256 *) Change the default configuration reader to deal with last line not
3257 being properly terminated.
3260 *) Change X509_NAME_cmp() so it applies the special rules on handling
3261 DN values that are of type PrintableString, as well as RDNs of type
3262 emailAddress where the value has the type ia5String.
3263 [stefank@valicert.com via Richard Levitte]
3265 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3266 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3267 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3268 the bitwise-OR of the two for use by the majority of applications
3269 wanting this behaviour, and update the docs. The documented
3270 behaviour and actual behaviour were inconsistent and had been
3271 changing anyway, so this is more a bug-fix than a behavioural
3273 [Geoff Thorpe, diagnosed by Nadav Har'El]
3275 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3276 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3279 *) Fix initialization code race conditions in
3280 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3281 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3282 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3283 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3284 ssl2_get_cipher_by_char(),
3285 ssl3_get_cipher_by_char().
3286 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3288 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3289 the cached sessions are flushed, as the remove_cb() might use ex_data
3290 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3291 (see [openssl.org #212]).
3292 [Geoff Thorpe, Lutz Jaenicke]
3294 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3295 length, instead of the encoding length to d2i_ASN1_OBJECT.
3298 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3300 *) [In 0.9.6g-engine release:]
3301 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3302 [Lynn Gazis <lgazis@rainbow.com>]
3304 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3306 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3307 and get fix the header length calculation.
3308 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3309 Alon Kantor <alonk@checkpoint.com> (and others),
3312 *) Use proper error handling instead of 'assertions' in buffer
3313 overflow checks added in 0.9.6e. This prevents DoS (the
3314 assertions could call abort()).
3315 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3317 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3319 *) Add various sanity checks to asn1_get_length() to reject
3320 the ASN1 length bytes if they exceed sizeof(long), will appear
3321 negative or the content length exceeds the length of the
3323 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3325 *) Fix cipher selection routines: ciphers without encryption had no flags
3326 for the cipher strength set and where therefore not handled correctly
3327 by the selection routines (PR #130).
3330 *) Fix EVP_dsa_sha macro.
3334 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3335 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3336 that was added in OpenSSL 0.9.6d.
3338 As the countermeasure turned out to be incompatible with some
3339 broken SSL implementations, the new option is part of SSL_OP_ALL.
3340 SSL_OP_ALL is usually employed when compatibility with weird SSL
3341 implementations is desired (e.g. '-bugs' option to 's_client' and
3342 's_server'), so the new option is automatically set in many
3346 *) Changes in security patch:
3348 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3349 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3350 Air Force Materiel Command, USAF, under agreement number
3353 *) Add various sanity checks to asn1_get_length() to reject
3354 the ASN1 length bytes if they exceed sizeof(long), will appear
3355 negative or the content length exceeds the length of the
3356 supplied buffer. (CVE-2002-0659)
3357 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3359 *) Assertions for various potential buffer overflows, not known to
3361 [Ben Laurie (CHATS)]
3363 *) Various temporary buffers to hold ASCII versions of integers were
3364 too small for 64 bit platforms. (CVE-2002-0655)
3365 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3367 *) Remote buffer overflow in SSL3 protocol - an attacker could
3368 supply an oversized session ID to a client. (CVE-2002-0656)
3369 [Ben Laurie (CHATS)]
3371 *) Remote buffer overflow in SSL2 protocol - an attacker could
3372 supply an oversized client master key. (CVE-2002-0656)
3373 [Ben Laurie (CHATS)]
3375 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3377 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3378 encoded as NULL) with id-dsa-with-sha1.
3379 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3381 *) Check various X509_...() return values in apps/req.c.
3382 [Nils Larsch <nla@trustcenter.de>]
3384 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3385 an end-of-file condition would erronously be flagged, when the CRLF
3386 was just at the end of a processed block. The bug was discovered when
3387 processing data through a buffering memory BIO handing the data to a
3388 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3389 <ptsekov@syntrex.com> and Nedelcho Stanev.
3392 *) Implement a countermeasure against a vulnerability recently found
3393 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3394 before application data chunks to avoid the use of known IVs
3395 with data potentially chosen by the attacker.
3398 *) Fix length checks in ssl3_get_client_hello().
3401 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3402 to prevent ssl3_read_internal() from incorrectly assuming that
3403 ssl3_read_bytes() found application data while handshake
3404 processing was enabled when in fact s->s3->in_read_app_data was
3405 merely automatically cleared during the initial handshake.
3406 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3408 *) Fix object definitions for Private and Enterprise: they were not
3409 recognized in their shortname (=lowercase) representation. Extend
3410 obj_dat.pl to issue an error when using undefined keywords instead
3411 of silently ignoring the problem (Svenning Sorensen
3412 <sss@sss.dnsalias.net>).
3415 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3416 generators, i.e. generators other than 2 and 5. (Previously, the
3417 code did not properly initialise the 'add' and 'rem' values to
3418 BN_generate_prime().)
3420 In the new general case, we do not insist that 'generator' is
3421 actually a primitive root: This requirement is rather pointless;
3422 a generator of the order-q subgroup is just as good, if not
3426 *) Map new X509 verification errors to alerts. Discovered and submitted by
3427 Tom Wu <tom@arcot.com>.
3430 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3431 returning non-zero before the data has been completely received
3432 when using non-blocking I/O.
3433 [Bodo Moeller; problem pointed out by John Hughes]
3435 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3436 [Ben Laurie, Lutz Jaenicke]
3438 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3439 Yoram Zahavi <YoramZ@gilian.com>).
3442 *) Add information about CygWin 1.3 and on, and preserve proper
3443 configuration for the versions before that.
3444 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3446 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3447 check whether we deal with a copy of a session and do not delete from
3448 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3449 <izhar@checkpoint.com>.
3452 *) Do not store session data into the internal session cache, if it
3453 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3454 flag is set). Proposed by Aslam <aslam@funk.com>.
3457 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3461 *) [In 0.9.6d-engine release:]
3462 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3463 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3465 *) Add the configuration target linux-s390x.
3466 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3468 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3469 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3470 variable as an indication that a ClientHello message has been
3471 received. As the flag value will be lost between multiple
3472 invocations of ssl3_accept when using non-blocking I/O, the
3473 function may not be aware that a handshake has actually taken
3474 place, thus preventing a new session from being added to the
3477 To avoid this problem, we now set s->new_session to 2 instead of
3478 using a local variable.
3479 [Lutz Jaenicke, Bodo Moeller]
3481 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3482 if the SSL_R_LENGTH_MISMATCH error is detected.
3483 [Geoff Thorpe, Bodo Moeller]
3485 *) New 'shared_ldflag' column in Configure platform table.
3488 *) Fix EVP_CIPHER_mode macro.
3489 ["Dan S. Camper" <dan@bti.net>]
3491 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3492 type, we must throw them away by setting rr->length to 0.
3493 [D P Chang <dpc@qualys.com>]
3495 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3497 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3498 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3499 worked incorrectly for those cases where range = 10..._2 and
3500 3*range is two bits longer than range.)
3503 *) Only add signing time to PKCS7 structures if it is not already
3507 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3508 OBJ_ld_ce should be OBJ_id_ce.
3509 Also some ip-pda OIDs in crypto/objects/objects.txt were
3510 incorrect (cf. RFC 3039).
3511 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3513 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3514 returns early because it has nothing to do.
3515 [Andy Schneider <andy.schneider@bjss.co.uk>]
3517 *) [In 0.9.6c-engine release:]
3518 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3519 [Andy Schneider <andy.schneider@bjss.co.uk>]
3521 *) [In 0.9.6c-engine release:]
3522 Add support for Cryptographic Appliance's keyserver technology.
3523 (Use engine 'keyclient')
3524 [Cryptographic Appliances and Geoff Thorpe]
3526 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3527 is called via tools/c89.sh because arguments have to be
3528 rearranged (all '-L' options must appear before the first object
3530 [Richard Shapiro <rshapiro@abinitio.com>]
3532 *) [In 0.9.6c-engine release:]
3533 Add support for Broadcom crypto accelerator cards, backported
3535 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3537 *) [In 0.9.6c-engine release:]
3538 Add support for SureWare crypto accelerator cards from
3539 Baltimore Technologies. (Use engine 'sureware')
3540 [Baltimore Technologies and Mark Cox]
3542 *) [In 0.9.6c-engine release:]
3543 Add support for crypto accelerator cards from Accelerated
3544 Encryption Processing, www.aep.ie. (Use engine 'aep')
3545 [AEP Inc. and Mark Cox]
3547 *) Add a configuration entry for gcc on UnixWare.
3548 [Gary Benson <gbenson@redhat.com>]
3550 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3551 messages are stored in a single piece (fixed-length part and
3552 variable-length part combined) and fix various bugs found on the way.
3555 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3556 instead. BIO_gethostbyname() does not know what timeouts are
3557 appropriate, so entries would stay in cache even when they have
3559 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3561 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3562 faced with a pathologically small ClientHello fragment that does
3563 not contain client_version: Instead of aborting with an error,
3564 simply choose the highest available protocol version (i.e.,
3565 TLS 1.0 unless it is disabled). In practice, ClientHello
3566 messages are never sent like this, but this change gives us
3567 strictly correct behaviour at least for TLS.
3570 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3571 never resets s->method to s->ctx->method when called from within
3572 one of the SSL handshake functions.
3573 [Bodo Moeller; problem pointed out by Niko Baric]
3575 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3576 (sent using the client's version number) if client_version is
3577 smaller than the protocol version in use. Also change
3578 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3579 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3580 the client will at least see that alert.
3583 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3587 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3588 client receives HelloRequest while in a handshake.
3589 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3591 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3592 should end in 'break', not 'goto end' which circuments various
3593 cleanups done in state SSL_ST_OK. But session related stuff
3594 must be disabled for SSL_ST_OK in the case that we just sent a
projects / openssl.git / blob