5 Changes between 0.9.8a and 0.9.9 [xx XXX xxxx]
7 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
8 dedicated Montgomery multiplication procedure, is introduced.
9 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
10 "64-bit" performance on certain 32-bit targets.
13 *) New option SSL_OP_NO_COMP to disable use of compression selectively
14 in SSL structures. New SSL ctrl to set maximum send fragment size.
15 Save memory by seeting the I/O buffer sizes dynamically instead of
16 using the maximum available value.
19 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
20 in addition to the text details.
23 *) Very, very preliminary EXPERIMENTAL support for printing of general
24 ASN1 structures. This currently produces rather ugly output and doesn't
25 handle several customised structures at all.
28 *) Integrated support for PVK file format and some related formats such
29 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
30 these in the 'rsa' and 'dsa' utilities.
33 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
36 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
37 place for the (very old) "NETSCAPE" format certificates which are now
38 handled using new ASN1 code equivalents.
41 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
42 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
43 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
46 *) Modify CRL distribution points extension code to print out previously
47 unsupported fields. Enhance extension setting code to allow setting of
51 *) Add print and set support for Issuing Distribution Point CRL extension.
54 Changes between 0.9.8a and 0.9.8b [XX xxx XXXX]
56 *) Add support for building of engines under engine/ as shared libraries
57 under VC++ build system.
60 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
61 Hopefully, we will not see any false combination of paths any more.
64 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
66 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
67 (part of SSL_OP_ALL). This option used to disable the
68 countermeasure against man-in-the-middle protocol-version
69 rollback in the SSL 2.0 server implementation, which is a bad
72 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
73 for Information Security, National Institute of Advanced Industrial
74 Science and Technology [AIST], Japan)]
76 *) Add two function to clear and return the verify parameter flags.
79 *) Keep cipherlists sorted in the source instead of sorting them at
80 runtime, thus removing the need for a lock.
83 *) Avoid some small subgroup attacks in Diffie-Hellman.
84 [Nick Mathewson and Ben Laurie]
86 *) Add functions for well-known primes.
89 *) Extended Windows CE support.
90 [Satoshi Nakamura and Andy Polyakov]
92 *) Initialize SSL_METHOD structures at compile time instead of during
93 runtime, thus removing the need for a lock.
96 *) Make PKCS7_decrypt() work even if no certificate is supplied by
97 attempting to decrypt each encrypted key in turn. Add support to
101 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
103 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
106 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
107 key into the same file any more.
110 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
113 *) Add -utf8 command line and config file option to 'ca'.
114 [Stefan <stf@udoma.org]
116 *) Removed the macro des_crypt(), as it seems to conflict with some
117 libraries. Use DES_crypt().
120 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
121 involves renaming the source and generated shared-libs for
122 both. The engines will accept the corrected or legacy ids
123 ('ncipher' and '4758_cca' respectively) when binding. NB,
124 this only applies when building 'shared'.
125 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
127 *) Add attribute functions to EVP_PKEY structure. Modify
128 PKCS12_create() to recognize a CSP name attribute and
129 use it. Make -CSP option work again in pkcs12 utility.
132 *) Add new functionality to the bn blinding code:
133 - automatic re-creation of the BN_BLINDING parameters after
134 a fixed number of uses (currently 32)
135 - add new function for parameter creation
136 - introduce flags to control the update behaviour of the
137 BN_BLINDING parameters
138 - hide BN_BLINDING structure
139 Add a second BN_BLINDING slot to the RSA structure to improve
140 performance when a single RSA object is shared among several
144 *) Add support for DTLS.
145 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
147 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
148 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
151 *) Remove buggy and incompletet DH cert support from
152 ssl/ssl_rsa.c and ssl/s3_both.c
155 *) Use SHA-1 instead of MD5 as the default digest algorithm for
156 the apps/openssl applications.
159 *) Compile clean with "-Wall -Wmissing-prototypes
160 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
161 DEBUG_SAFESTACK must also be set.
164 *) Change ./Configure so that certain algorithms can be disabled by default.
165 The new counterpiece to "no-xxx" is "enable-xxx".
167 The patented RC5 and MDC2 algorithms will now be disabled unless
168 "enable-rc5" and "enable-mdc2", respectively, are specified.
170 (IDEA remains enabled despite being patented. This is because IDEA
171 is frequently required for interoperability, and there is no license
172 fee for non-commercial use. As before, "no-idea" can be used to
173 avoid this algorithm.)
177 *) Add processing of proxy certificates (see RFC 3820). This work was
178 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
179 EGEE (Enabling Grids for E-science in Europe).
182 *) RC4 performance overhaul on modern architectures/implementations, such
183 as Intel P4, IA-64 and AMD64.
186 *) New utility extract-section.pl. This can be used specify an alternative
187 section number in a pod file instead of having to treat each file as
188 a separate case in Makefile. This can be done by adding two lines to the
191 =for comment openssl_section:XXX
193 The blank line is mandatory.
197 *) New arguments -certform, -keyform and -pass for s_client and s_server
198 to allow alternative format key and certificate files and passphrase
202 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
203 update associated structures and add various utility functions.
205 Add new policy related verify parameters, include policy checking in
206 standard verify code. Enhance 'smime' application with extra parameters
207 to support policy checking and print out.
210 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
211 Nehemiah processors. These extensions support AES encryption in hardware
212 as well as RNG (though RNG support is currently disabled).
213 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
215 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
218 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
219 [Andy Polyakov and a number of other people]
221 *) Improved PowerPC platform support. Most notably BIGNUM assembler
222 implementation contributed by IBM.
223 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
225 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
226 exponent rather than 'unsigned long'. There is a corresponding change to
227 the new 'rsa_keygen' element of the RSA_METHOD structure.
228 [Jelte Jansen, Geoff Thorpe]
230 *) Functionality for creating the initial serial number file is now
231 moved from CA.pl to the 'ca' utility with a new option -create_serial.
233 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
234 number file to 1, which is bound to cause problems. To avoid
235 the problems while respecting compatibility between different 0.9.7
236 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
237 CA.pl for serial number initialization. With the new release 0.9.8,
238 we can fix the problem directly in the 'ca' utility.)
241 *) Reduced header interdepencies by declaring more opaque objects in
242 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
243 give fewer recursive includes, which could break lazy source code - so
244 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
245 developers should define this symbol when building and using openssl to
246 ensure they track the recommended behaviour, interfaces, [etc], but
247 backwards-compatible behaviour prevails when this isn't defined.
250 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
253 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
254 This will generate a random key of the appropriate length based on the
255 cipher context. The EVP_CIPHER can provide its own random key generation
256 routine to support keys of a specific form. This is used in the des and
257 3des routines to generate a key of the correct parity. Update S/MIME
258 code to use new functions and hence generate correct parity DES keys.
259 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
260 valid (weak or incorrect parity).
263 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
264 as looking them up. This is useful when the verified structure may contain
265 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
266 present unless the new PKCS7_NO_CRL flag is asserted.
269 *) Extend ASN1 oid configuration module. It now additionally accepts the
272 shortName = some long name, 1.2.3.4
275 *) Reimplemented the BN_CTX implementation. There is now no more static
276 limitation on the number of variables it can handle nor the depth of the
277 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
278 information can now expand as required, and rather than having a single
279 static array of bignums, BN_CTX now uses a linked-list of such arrays
280 allowing it to expand on demand whilst maintaining the usefulness of
284 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
285 to allow all RSA operations to function using a single BN_CTX.
288 *) Preliminary support for certificate policy evaluation and checking. This
289 is initially intended to pass the tests outlined in "Conformance Testing
290 of Relying Party Client Certificate Path Processing Logic" v1.07.
293 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
294 remained unused and not that useful. A variety of other little bignum
295 tweaks and fixes have also been made continuing on from the audit (see
299 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
300 associated ASN1, EVP and SSL functions and old ASN1 macros.
303 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
304 and this should never fail. So the return value from the use of
305 BN_set_word() (which can fail due to needless expansion) is now deprecated;
306 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
309 *) BN_CTX_get() should return zero-valued bignums, providing the same
310 initialised value as BN_new().
311 [Geoff Thorpe, suggested by Ulf Möller]
313 *) Support for inhibitAnyPolicy certificate extension.
316 *) An audit of the BIGNUM code is underway, for which debugging code is
317 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
318 is considered valid when processing BIGNUMs, and causes execution to
319 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
320 further steps are taken to deliberately pollute unused data in BIGNUM
321 structures to try and expose faulty code further on. For now, openssl will
322 (in its default mode of operation) continue to tolerate the inconsistent
323 forms that it has tolerated in the past, but authors and packagers should
324 consider trying openssl and their own applications when compiled with
325 these debugging symbols defined. It will help highlight potential bugs in
326 their own code, and will improve the test coverage for OpenSSL itself. At
327 some point, these tighter rules will become openssl's default to improve
328 maintainability, though the assert()s and other overheads will remain only
329 in debugging configurations. See bn.h for more details.
330 [Geoff Thorpe, Nils Larsch, Ulf Möller]
332 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
333 that can only be obtained through BN_CTX_new() (which implicitly
334 initialises it). The presence of this function only made it possible
335 to overwrite an existing structure (and cause memory leaks).
338 *) Because of the callback-based approach for implementing LHASH as a
339 template type, lh_insert() adds opaque objects to hash-tables and
340 lh_doall() or lh_doall_arg() are typically used with a destructor callback
341 to clean up those corresponding objects before destroying the hash table
342 (and losing the object pointers). So some over-zealous constifications in
343 LHASH have been relaxed so that lh_insert() does not take (nor store) the
344 objects as "const" and the lh_doall[_arg] callback wrappers are not
345 prototyped to have "const" restrictions on the object pointers they are
346 given (and so aren't required to cast them away any more).
349 *) The tmdiff.h API was so ugly and minimal that our own timing utility
350 (speed) prefers to use its own implementation. The two implementations
351 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
352 its object type properly exposed (MS_TM) instead of casting to/from "char
353 *". This may still change yet if someone realises MS_TM and "ms_time_***"
354 aren't necessarily the greatest nomenclatures - but this is what was used
355 internally to the implementation so I've used that for now.
358 *) Ensure that deprecated functions do not get compiled when
359 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
360 the self-tests were still using deprecated key-generation functions so
361 these have been updated also.
364 *) Reorganise PKCS#7 code to separate the digest location functionality
365 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
366 New function PKCS7_set_digest() to set the digest type for PKCS#7
367 digestedData type. Add additional code to correctly generate the
368 digestedData type and add support for this type in PKCS7 initialization
372 *) New function PKCS7_set0_type_other() this initializes a PKCS7
373 structure of type "other".
376 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
377 sure the loop does correctly stop and breaking ("division by zero")
378 modulus operations are not performed. The (pre-generated) prime
379 table crypto/bn/bn_prime.h was already correct, but it could not be
380 re-generated on some platforms because of the "division by zero"
381 situation in the script.
382 [Ralf S. Engelschall]
384 *) Update support for ECC-based TLS ciphersuites according to
385 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
386 SHA-1 now is only used for "small" curves (where the
387 representation of a field element takes up to 24 bytes); for
388 larger curves, the field element resulting from ECDH is directly
389 used as premaster secret.
390 [Douglas Stebila (Sun Microsystems Laboratories)]
392 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
393 curve secp160r1 to the tests.
394 [Douglas Stebila (Sun Microsystems Laboratories)]
396 *) Add the possibility to load symbols globally with DSO.
397 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
399 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
400 control of the error stack.
403 *) Add support for STORE in ENGINE.
406 *) Add the STORE type. The intention is to provide a common interface
407 to certificate and key stores, be they simple file-based stores, or
408 HSM-type store, or LDAP stores, or...
409 NOTE: The code is currently UNTESTED and isn't really used anywhere.
412 *) Add a generic structure called OPENSSL_ITEM. This can be used to
413 pass a list of arguments to any function as well as provide a way
414 for a function to pass data back to the caller.
417 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
418 works like BUF_strdup() but can be used to duplicate a portion of
419 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
423 *) Add the function sk_find_ex() which works like sk_find(), but will
424 return an index to an element even if an exact match couldn't be
425 found. The index is guaranteed to point at the element where the
426 searched-for key would be inserted to preserve sorting order.
429 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
430 takes an extra flags argument for optional functionality. Currently,
431 the following flags are defined:
433 OBJ_BSEARCH_VALUE_ON_NOMATCH
434 This one gets OBJ_bsearch_ex() to return a pointer to the first
435 element where the comparing function returns a negative or zero
438 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
439 This one gets OBJ_bsearch_ex() to return a pointer to the first
440 element where the comparing function returns zero. This is useful
441 if there are more than one element where the comparing function
445 *) Make it possible to create self-signed certificates with 'openssl ca'
446 in such a way that the self-signed certificate becomes part of the
447 CA database and uses the same mechanisms for serial number generation
448 as all other certificate signing. The new flag '-selfsign' enables
449 this functionality. Adapt CA.sh and CA.pl.in.
452 *) Add functionality to check the public key of a certificate request
453 against a given private. This is useful to check that a certificate
454 request can be signed by that key (self-signing).
457 *) Make it possible to have multiple active certificates with the same
458 subject in the CA index file. This is done only if the keyword
459 'unique_subject' is set to 'no' in the main CA section (default
460 if 'CA_default') of the configuration file. The value is saved
461 with the database itself in a separate index attribute file,
462 named like the index file with '.attr' appended to the name.
465 *) Generate muti valued AVAs using '+' notation in config files for
469 *) Support for nameConstraints certificate extension.
472 *) Support for policyConstraints certificate extension.
475 *) Support for policyMappings certificate extension.
478 *) Make sure the default DSA_METHOD implementation only uses its
479 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
480 and change its own handlers to be NULL so as to remove unnecessary
481 indirection. This lets alternative implementations fallback to the
482 default implementation more easily.
485 *) Support for directoryName in GeneralName related extensions
489 *) Make it possible to link applications using Makefile.shared.
490 Make that possible even when linking against static libraries!
493 *) Support for single pass processing for S/MIME signing. This now
494 means that S/MIME signing can be done from a pipe, in addition
495 cleartext signing (multipart/signed type) is effectively streaming
496 and the signed data does not need to be all held in memory.
498 This is done with a new flag PKCS7_STREAM. When this flag is set
499 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
500 is done after the data is output (and digests calculated) in
504 *) Add full support for -rpath/-R, both in shared libraries and
505 applications, at least on the platforms where it's known how
509 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
510 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
511 will now compute a table of multiples of the generator that
512 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
513 faster (notably in the case of a single point multiplication,
515 [Nils Larsch, Bodo Moeller]
517 *) IPv6 support for certificate extensions. The various extensions
518 which use the IP:a.b.c.d can now take IPv6 addresses using the
519 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
523 *) Added an ENGINE that implements RSA by performing private key
524 exponentiations with the GMP library. The conversions to and from
525 GMP's mpz_t format aren't optimised nor are any montgomery forms
526 cached, and on x86 it appears OpenSSL's own performance has caught up.
527 However there are likely to be other architectures where GMP could
528 provide a boost. This ENGINE is not built in by default, but it can be
529 specified at Configure time and should be accompanied by the necessary
530 linker additions, eg;
531 ./config -DOPENSSL_USE_GMP -lgmp
534 *) "openssl engine" will not display ENGINE/DSO load failure errors when
535 testing availability of engines with "-t" - the old behaviour is
536 produced by increasing the feature's verbosity with "-tt".
539 *) ECDSA routines: under certain error conditions uninitialized BN objects
540 could be freed. Solution: make sure initialization is performed early
541 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
545 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
546 and DH_METHOD (eg. by ENGINE implementations) to override the normal
547 software implementations. For DSA and DH, parameter generation can
548 also be overriden by providing the appropriate method callbacks.
551 *) Change the "progress" mechanism used in key-generation and
552 primality testing to functions that take a new BN_GENCB pointer in
553 place of callback/argument pairs. The new API functions have "_ex"
554 postfixes and the older functions are reimplemented as wrappers for
555 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
556 declarations of the old functions to help (graceful) attempts to
557 migrate to the new functions. Also, the new key-generation API
558 functions operate on a caller-supplied key-structure and return
559 success/failure rather than returning a key or NULL - this is to
560 help make "keygen" another member function of RSA_METHOD etc.
562 Example for using the new callback interface:
564 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
568 BN_GENCB_set(&my_cb, my_callback, my_arg);
570 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
571 /* For the meaning of a, b in calls to my_callback(), see the
572 * documentation of the function that calls the callback.
573 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
574 * my_callback should return 1 if it wants BN_is_prime_ex()
575 * to continue, or 0 to stop.
580 *) Change the ZLIB compression method to be stateful, and make it
581 available to TLS with the number defined in
582 draft-ietf-tls-compression-04.txt.
585 *) Add the ASN.1 structures and functions for CertificatePair, which
586 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
588 CertificatePair ::= SEQUENCE {
589 forward [0] Certificate OPTIONAL,
590 reverse [1] Certificate OPTIONAL,
591 -- at least one of the pair shall be present -- }
593 Also implement the PEM functions to read and write certificate
594 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
596 This needed to be defined, mostly for the sake of the LDAP
597 attribute crossCertificatePair, but may prove useful elsewhere as
601 *) Make it possible to inhibit symlinking of shared libraries in
602 Makefile.shared, for Cygwin's sake.
605 *) Extend the BIGNUM API by creating a function
606 void BN_set_negative(BIGNUM *a, int neg);
607 and a macro that behave like
608 int BN_is_negative(const BIGNUM *a);
610 to avoid the need to access 'a->neg' directly in applications.
613 *) Implement fast modular reduction for pseudo-Mersenne primes
614 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
615 EC_GROUP_new_curve_GFp() will now automatically use this
617 [Nils Larsch <nla@trustcenter.de>]
619 *) Add new lock type (CRYPTO_LOCK_BN).
622 *) Change the ENGINE framework to automatically load engines
623 dynamically from specific directories unless they could be
624 found to already be built in or loaded. Move all the
625 current engines except for the cryptodev one to a new
627 The engines in engines/ are built as shared libraries if
628 the "shared" options was given to ./Configure or ./config.
629 Otherwise, they are inserted in libcrypto.a.
630 /usr/local/ssl/engines is the default directory for dynamic
631 engines, but that can be overriden at configure time through
632 the usual use of --prefix and/or --openssldir, and at run
633 time with the environment variable OPENSSL_ENGINES.
634 [Geoff Thorpe and Richard Levitte]
636 *) Add Makefile.shared, a helper makefile to build shared
637 libraries. Addapt Makefile.org.
640 *) Add version info to Win32 DLLs.
641 [Peter 'Luna' Runestig" <peter@runestig.com>]
643 *) Add new 'medium level' PKCS#12 API. Certificates and keys
644 can be added using this API to created arbitrary PKCS#12
645 files while avoiding the low level API.
647 New options to PKCS12_create(), key or cert can be NULL and
648 will then be omitted from the output file. The encryption
649 algorithm NIDs can be set to -1 for no encryption, the mac
650 iteration count can be set to 0 to omit the mac.
652 Enhance pkcs12 utility by making the -nokeys and -nocerts
653 options work when creating a PKCS#12 file. New option -nomac
654 to omit the mac, NONE can be set for an encryption algorithm.
655 New code is modified to use the enhanced PKCS12_create()
656 instead of the low level API.
659 *) Extend ASN1 encoder to support indefinite length constructed
660 encoding. This can output sequences tags and octet strings in
661 this form. Modify pk7_asn1.c to support indefinite length
662 encoding. This is experimental and needs additional code to
663 be useful, such as an ASN1 bio and some enhanced streaming
666 Extend template encode functionality so that tagging is passed
667 down to the template encoder.
670 *) Let 'openssl req' fail if an argument to '-newkey' is not
671 recognized instead of using RSA as a default.
674 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
675 As these are not official, they are not included in "ALL";
676 the "ECCdraft" ciphersuite group alias can be used to select them.
677 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
679 *) Add ECDH engine support.
680 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
682 *) Add ECDH in new directory crypto/ecdh/.
683 [Douglas Stebila (Sun Microsystems Laboratories)]
685 *) Let BN_rand_range() abort with an error after 100 iterations
686 without success (which indicates a broken PRNG).
689 *) Change BN_mod_sqrt() so that it verifies that the input value
690 is really the square of the return value. (Previously,
691 BN_mod_sqrt would show GIGO behaviour.)
694 *) Add named elliptic curves over binary fields from X9.62, SECG,
695 and WAP/WTLS; add OIDs that were still missing.
697 [Sheueling Chang Shantz and Douglas Stebila
698 (Sun Microsystems Laboratories)]
700 *) Extend the EC library for elliptic curves over binary fields
701 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
704 EC_GF2m_simple_method
708 EC_GROUP_new_curve_GF2m
709 EC_GROUP_set_curve_GF2m
710 EC_GROUP_get_curve_GF2m
711 EC_POINT_set_affine_coordinates_GF2m
712 EC_POINT_get_affine_coordinates_GF2m
713 EC_POINT_set_compressed_coordinates_GF2m
715 Point compression for binary fields is disabled by default for
716 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
719 As binary polynomials are represented as BIGNUMs, various members
720 of the EC_GROUP and EC_POINT data structures can be shared
721 between the implementations for prime fields and binary fields;
722 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
723 are essentially identical to their ..._GFp counterparts.
724 (For simplicity, the '..._GFp' prefix has been dropped from
725 various internal method names.)
727 An internal 'field_div' method (similar to 'field_mul' and
728 'field_sqr') has been added; this is used only for binary fields.
730 [Sheueling Chang Shantz and Douglas Stebila
731 (Sun Microsystems Laboratories)]
733 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
734 through methods ('mul', 'precompute_mult').
736 The generic implementations (now internally called 'ec_wNAF_mul'
737 and 'ec_wNAF_precomputed_mult') remain the default if these
738 methods are undefined.
740 [Sheueling Chang Shantz and Douglas Stebila
741 (Sun Microsystems Laboratories)]
743 *) New function EC_GROUP_get_degree, which is defined through
744 EC_METHOD. For curves over prime fields, this returns the bit
745 length of the modulus.
747 [Sheueling Chang Shantz and Douglas Stebila
748 (Sun Microsystems Laboratories)]
750 *) New functions EC_GROUP_dup, EC_POINT_dup.
751 (These simply call ..._new and ..._copy).
753 [Sheueling Chang Shantz and Douglas Stebila
754 (Sun Microsystems Laboratories)]
756 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
757 Polynomials are represented as BIGNUMs (where the sign bit is not
758 used) in the following functions [macros]:
761 BN_GF2m_sub [= BN_GF2m_add]
762 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
763 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
764 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
766 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
767 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
768 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
769 BN_GF2m_cmp [= BN_ucmp]
771 (Note that only the 'mod' functions are actually for fields GF(2^m).
772 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
774 For some functions, an the irreducible polynomial defining a
775 field can be given as an 'unsigned int[]' with strictly
776 decreasing elements giving the indices of those bits that are set;
777 i.e., p[] represents the polynomial
778 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
780 p[0] > p[1] > ... > p[k] = 0.
781 This applies to the following functions:
786 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
787 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
790 BN_GF2m_mod_solve_quad_arr
794 Conversion can be performed by the following functions:
799 bntest.c has additional tests for binary polynomial arithmetic.
801 Two implementations for BN_GF2m_mod_div() are available.
802 The default algorithm simply uses BN_GF2m_mod_inv() and
803 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
804 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
805 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
807 [Sheueling Chang Shantz and Douglas Stebila
808 (Sun Microsystems Laboratories)]
810 *) Add new error code 'ERR_R_DISABLED' that can be used when some
811 functionality is disabled at compile-time.
812 [Douglas Stebila <douglas.stebila@sun.com>]
814 *) Change default behaviour of 'openssl asn1parse' so that more
815 information is visible when viewing, e.g., a certificate:
817 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
818 mode the content of non-printable OCTET STRINGs is output in a
819 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
820 avoid the appearance of a printable string.
821 [Nils Larsch <nla@trustcenter.de>]
823 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
825 EC_GROUP_set_asn1_flag()
826 EC_GROUP_get_asn1_flag()
827 EC_GROUP_set_point_conversion_form()
828 EC_GROUP_get_point_conversion_form()
829 These control ASN1 encoding details:
830 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
831 has been set to OPENSSL_EC_NAMED_CURVE.
832 - Points are encoded in uncompressed form by default; options for
833 asn1_for are as for point2oct, namely
834 POINT_CONVERSION_COMPRESSED
835 POINT_CONVERSION_UNCOMPRESSED
836 POINT_CONVERSION_HYBRID
838 Also add 'seed' and 'seed_len' members to EC_GROUP with access
842 EC_GROUP_get_seed_len()
843 This is used only for ASN1 purposes (so far).
844 [Nils Larsch <nla@trustcenter.de>]
846 *) Add 'field_type' member to EC_METHOD, which holds the NID
847 of the appropriate field type OID. The new function
848 EC_METHOD_get_field_type() returns this value.
849 [Nils Larsch <nla@trustcenter.de>]
856 providing useful interfaces to EC_POINT_point2oct() and
857 EC_POINT_oct2point().
858 [Nils Larsch <nla@trustcenter.de>]
860 *) Change internals of the EC library so that the functions
861 EC_GROUP_set_generator()
862 EC_GROUP_get_generator()
864 EC_GROUP_get_cofactor()
865 are implemented directly in crypto/ec/ec_lib.c and not dispatched
866 to methods, which would lead to unnecessary code duplication when
867 adding different types of curves.
868 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
870 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
871 arithmetic, and such that modified wNAFs are generated
872 (which avoid length expansion in many cases).
875 *) Add a function EC_GROUP_check_discriminant() (defined via
876 EC_METHOD) that verifies that the curve discriminant is non-zero.
878 Add a function EC_GROUP_check() that makes some sanity tests
879 on a EC_GROUP, its generator and order. This includes
880 EC_GROUP_check_discriminant().
881 [Nils Larsch <nla@trustcenter.de>]
883 *) Add ECDSA in new directory crypto/ecdsa/.
885 Add applications 'openssl ecparam' and 'openssl ecdsa'
886 (these are based on 'openssl dsaparam' and 'openssl dsa').
888 ECDSA support is also included in various other files across the
889 library. Most notably,
890 - 'openssl req' now has a '-newkey ecdsa:file' option;
891 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
892 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
893 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
894 them suitable for ECDSA where domain parameters must be
895 extracted before the specific public key;
896 - ECDSA engine support has been added.
897 [Nils Larsch <nla@trustcenter.de>]
899 *) Include some named elliptic curves, and add OIDs from X9.62,
900 SECG, and WAP/WTLS. Each curve can be obtained from the new
902 EC_GROUP_new_by_curve_name(),
903 and the list of available named curves can be obtained with
904 EC_get_builtin_curves().
905 Also add a 'curve_name' member to EC_GROUP objects, which can be
907 EC_GROUP_set_curve_name()
908 EC_GROUP_get_curve_name()
909 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
911 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
912 was actually never needed) and in BN_mul(). The removal in BN_mul()
913 required a small change in bn_mul_part_recursive() and the addition
914 of the functions bn_cmp_part_words(), bn_sub_part_words() and
915 bn_add_part_words(), which do the same thing as bn_cmp_words(),
916 bn_sub_words() and bn_add_words() except they take arrays with
920 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
922 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
923 The value now differs depending on if you build for FIPS or not.
924 BEWARE! A program linked with a shared FIPSed libcrypto can't be
925 safely run with a non-FIPSed libcrypto, as it may crash because of
926 the difference induced by this change.
929 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
931 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
932 (part of SSL_OP_ALL). This option used to disable the
933 countermeasure against man-in-the-middle protocol-version
934 rollback in the SSL 2.0 server implementation, which is a bad
935 idea. (CVE-2005-2969)
937 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
938 for Information Security, National Institute of Advanced Industrial
939 Science and Technology [AIST], Japan)]
941 *) Minimal support for X9.31 signatures and PSS padding modes. This is
942 mainly for FIPS compliance and not fully integrated at this stage.
945 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
946 the exponentiation using a fixed-length exponent. (Otherwise,
947 the information leaked through timing could expose the secret key
948 after many signatures; cf. Bleichenbacher's attack on DSA with
952 *) Make a new fixed-window mod_exp implementation the default for
953 RSA, DSA, and DH private-key operations so that the sequence of
954 squares and multiplies and the memory access pattern are
955 independent of the particular secret key. This will mitigate
956 cache-timing and potential related attacks.
958 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
959 and this is automatically used by BN_mod_exp_mont() if the new flag
960 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
961 will use this BN flag for private exponents unless the flag
962 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
963 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
965 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
967 *) Change the client implementation for SSLv23_method() and
968 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
969 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
970 (Previously, the SSL 2.0 backwards compatible Client Hello
971 message format would be used even with SSL_OP_NO_SSLv2.)
974 *) Add support for smime-type MIME parameter in S/MIME messages which some
978 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
979 a threadsafe manner. Modify rsa code to use new function and add calls
980 to dsa and dh code (which had race conditions before).
983 *) Include the fixed error library code in the C error file definitions
984 instead of fixing them up at runtime. This keeps the error code
988 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
990 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
993 *) Fixes for newer kerberos headers. NB: the casts are needed because
994 the 'length' field is signed on one version and unsigned on another
995 with no (?) obvious way to tell the difference, without these VC++
996 complains. Also the "definition" of FAR (blank) is no longer included
997 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
998 some needed definitions.
1001 *) Undo Cygwin change.
1004 *) Added support for proxy certificates according to RFC 3820.
1005 Because they may be a security thread to unaware applications,
1006 they must be explicitely allowed in run-time. See
1007 docs/HOWTO/proxy_certificates.txt for further information.
1010 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1012 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1013 server and client random values. Previously
1014 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1015 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1017 This change has negligible security impact because:
1019 1. Server and client random values still have 24 bytes of pseudo random
1022 2. Server and client random values are sent in the clear in the initial
1025 3. The master secret is derived using the premaster secret (48 bytes in
1026 size for static RSA ciphersuites) as well as client server and random
1029 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1032 [Stephen Henson, reported by UK NISCC]
1034 *) Use Windows randomness collection on Cygwin.
1037 *) Fix hang in EGD/PRNGD query when communication socket is closed
1038 prematurely by EGD/PRNGD.
1039 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1041 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1044 *) Back-port of selected performance improvements from development
1045 branch, as well as improved support for PowerPC platforms.
1048 *) Add lots of checks for memory allocation failure, error codes to indicate
1049 failure and freeing up memory if a failure occurs.
1050 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1052 *) Add new -passin argument to dgst.
1055 *) Perform some character comparisons of different types in X509_NAME_cmp:
1056 this is needed for some certificates that reencode DNs into UTF8Strings
1057 (in violation of RFC3280) and can't or wont issue name rollover
1061 *) Make an explicit check during certificate validation to see that
1062 the CA setting in each certificate on the chain is correct. As a
1063 side effect always do the following basic checks on extensions,
1064 not just when there's an associated purpose to the check:
1066 - if there is an unhandled critical extension (unless the user
1067 has chosen to ignore this fault)
1068 - if the path length has been exceeded (if one is set at all)
1069 - that certain extensions fit the associated purpose (if one has
1073 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1075 *) Avoid a race condition when CRLs are checked in a multi threaded
1076 environment. This would happen due to the reordering of the revoked
1077 entries during signature checking and serial number lookup. Now the
1078 encoding is cached and the serial number sort performed under a lock.
1079 Add new STACK function sk_is_sorted().
1082 *) Add Delta CRL to the extension code.
1085 *) Various fixes to s3_pkt.c so alerts are sent properly.
1086 [David Holmes <d.holmes@f5.com>]
1088 *) Reduce the chances of duplicate issuer name and serial numbers (in
1089 violation of RFC3280) using the OpenSSL certificate creation utilities.
1090 This is done by creating a random 64 bit value for the initial serial
1091 number when a serial number file is created or when a self signed
1092 certificate is created using 'openssl req -x509'. The initial serial
1093 number file is created using 'openssl x509 -next_serial' in CA.pl
1094 rather than being initialized to 1.
1097 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1099 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1100 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1101 [Joe Orton, Steve Henson]
1103 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1105 [Joe Orton, Steve Henson]
1107 *) Make it possible to have multiple active certificates with the same
1108 subject in the CA index file. This is done only if the keyword
1109 'unique_subject' is set to 'no' in the main CA section (default
1110 if 'CA_default') of the configuration file. The value is saved
1111 with the database itself in a separate index attribute file,
1112 named like the index file with '.attr' appended to the name.
1115 *) X509 verify fixes. Disable broken certificate workarounds when
1116 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1117 keyUsage extension present. Don't accept CRLs with unhandled critical
1118 extensions: since verify currently doesn't process CRL extensions this
1119 rejects a CRL with *any* critical extensions. Add new verify error codes
1123 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1124 A clarification of RFC2560 will require the use of OCTET STRINGs and
1125 some implementations cannot handle the current raw format. Since OpenSSL
1126 copies and compares OCSP nonces as opaque blobs without any attempt at
1127 parsing them this should not create any compatibility issues.
1130 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1131 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1132 this HMAC (and other) operations are several times slower than OpenSSL
1136 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1137 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1139 *) Use the correct content when signing type "other".
1142 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1144 *) Fix various bugs revealed by running the NISCC test suite:
1146 Stop out of bounds reads in the ASN1 code when presented with
1147 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1149 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1151 If verify callback ignores invalid public key errors don't try to check
1152 certificate signature with the NULL public key.
1156 *) New -ignore_err option in ocsp application to stop the server
1157 exiting on the first error in a request.
1160 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1161 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1165 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1166 extra data after the compression methods not only for TLS 1.0
1167 but also for SSL 3.0 (as required by the specification).
1168 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1170 *) Change X509_certificate_type() to mark the key as exported/exportable
1171 when it's 512 *bits* long, not 512 bytes.
1174 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1175 blocks during encryption.
1178 *) Various fixes to base64 BIO and non blocking I/O. On write
1179 flushes were not handled properly if the BIO retried. On read
1180 data was not being buffered properly and had various logic bugs.
1181 This also affects blocking I/O when the data being decoded is a
1185 *) Various S/MIME bugfixes and compatibility changes:
1186 output correct application/pkcs7 MIME type if
1187 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1188 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1189 of files as .eml work). Correctly handle very long lines in MIME
1193 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1195 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1196 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1197 a protocol version number mismatch like a decryption error
1198 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1201 *) Turn on RSA blinding by default in the default implementation
1202 to avoid a timing attack. Applications that don't want it can call
1203 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1204 They would be ill-advised to do so in most cases.
1205 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1207 *) Change RSA blinding code so that it works when the PRNG is not
1208 seeded (in this case, the secret RSA exponent is abused as
1209 an unpredictable seed -- if it is not unpredictable, there
1210 is no point in blinding anyway). Make RSA blinding thread-safe
1211 by remembering the creator's thread ID in rsa->blinding and
1212 having all other threads use local one-time blinding factors
1213 (this requires more computation than sharing rsa->blinding, but
1214 avoids excessive locking; and if an RSA object is not shared
1215 between threads, blinding will still be very fast).
1218 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1219 ENGINE as defaults for all supported algorithms irrespective of
1220 the 'flags' parameter. 'flags' is now honoured, so applications
1221 should make sure they are passing it correctly.
1224 *) Target "mingw" now allows native Windows code to be generated in
1225 the Cygwin environment as well as with the MinGW compiler.
1228 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1230 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1231 via timing by performing a MAC computation even if incorrrect
1232 block cipher padding has been found. This is a countermeasure
1233 against active attacks where the attacker has to distinguish
1234 between bad padding and a MAC verification error. (CVE-2003-0078)
1236 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1237 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1238 Martin Vuagnoux (EPFL, Ilion)]
1240 *) Make the no-err option work as intended. The intention with no-err
1241 is not to have the whole error stack handling routines removed from
1242 libcrypto, it's only intended to remove all the function name and
1243 reason texts, thereby removing some of the footprint that may not
1244 be interesting if those errors aren't displayed anyway.
1246 NOTE: it's still possible for any application or module to have it's
1247 own set of error texts inserted. The routines are there, just not
1248 used by default when no-err is given.
1251 *) Add support for FreeBSD on IA64.
1252 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1254 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1255 Kerberos function mit_des_cbc_cksum(). Before this change,
1256 the value returned by DES_cbc_cksum() was like the one from
1257 mit_des_cbc_cksum(), except the bytes were swapped.
1258 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1260 *) Allow an application to disable the automatic SSL chain building.
1261 Before this a rather primitive chain build was always performed in
1262 ssl3_output_cert_chain(): an application had no way to send the
1263 correct chain if the automatic operation produced an incorrect result.
1265 Now the chain builder is disabled if either:
1267 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1269 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1271 The reasoning behind this is that an application would not want the
1272 auto chain building to take place if extra chain certificates are
1273 present and it might also want a means of sending no additional
1274 certificates (for example the chain has two certificates and the
1278 *) Add the possibility to build without the ENGINE framework.
1279 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1281 *) Under Win32 gmtime() can return NULL: check return value in
1282 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1285 *) DSA routines: under certain error conditions uninitialized BN objects
1286 could be freed. Solution: make sure initialization is performed early
1287 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1288 Nils Larsch <nla@trustcenter.de> via PR#459)
1291 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1292 checked on reconnect on the client side, therefore session resumption
1293 could still fail with a "ssl session id is different" error. This
1294 behaviour is masked when SSL_OP_ALL is used due to
1295 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1296 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1297 followup to PR #377.
1300 *) IA-32 assembler support enhancements: unified ELF targets, support
1301 for SCO/Caldera platforms, fix for Cygwin shared build.
1304 *) Add support for FreeBSD on sparc64. As a consequence, support for
1305 FreeBSD on non-x86 processors is separate from x86 processors on
1306 the config script, much like the NetBSD support.
1307 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1309 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1311 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1314 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1315 code (06) was taken as the first octet of the session ID and the last
1316 octet was ignored consequently. As a result SSLv2 client side session
1317 caching could not have worked due to the session ID mismatch between
1319 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1323 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1324 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1328 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1329 seems that in spite of existing for more than a year, many application
1330 author have done nothing to provide the necessary callbacks, which
1331 means that this particular engine will not work properly anywhere.
1332 This is a very unfortunate situation which forces us, in the name
1333 of usability, to give the hw_ncipher.c a static lock, which is part
1335 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1336 appear in 0.9.8 or later. We EXPECT application authors to have
1337 dealt properly with this when 0.9.8 is released (unless we actually
1338 make such changes in the libcrypto locking code that changes will
1339 have to be made anyway).
1342 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1343 octets have been read, EOF or an error occurs. Without this change
1344 some truncated ASN1 structures will not produce an error.
1347 *) Disable Heimdal support, since it hasn't been fully implemented.
1348 Still give the possibility to force the use of Heimdal, but with
1349 warnings and a request that patches get sent to openssl-dev.
1352 *) Add the VC-CE target, introduce the WINCE sysname, and add
1353 INSTALL.WCE and appropriate conditionals to make it build.
1354 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1356 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1357 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1358 edit numbers of the version.
1359 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1361 *) Introduce safe string copy and catenation functions
1362 (BUF_strlcpy() and BUF_strlcat()).
1363 [Ben Laurie (CHATS) and Richard Levitte]
1365 *) Avoid using fixed-size buffers for one-line DNs.
1366 [Ben Laurie (CHATS)]
1368 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1369 resizing buffers containing secrets, and use where appropriate.
1370 [Ben Laurie (CHATS)]
1372 *) Avoid using fixed size buffers for configuration file location.
1373 [Ben Laurie (CHATS)]
1375 *) Avoid filename truncation for various CA files.
1376 [Ben Laurie (CHATS)]
1378 *) Use sizeof in preference to magic numbers.
1379 [Ben Laurie (CHATS)]
1381 *) Avoid filename truncation in cert requests.
1382 [Ben Laurie (CHATS)]
1384 *) Add assertions to check for (supposedly impossible) buffer
1386 [Ben Laurie (CHATS)]
1388 *) Don't cache truncated DNS entries in the local cache (this could
1389 potentially lead to a spoofing attack).
1390 [Ben Laurie (CHATS)]
1392 *) Fix various buffers to be large enough for hex/decimal
1393 representations in a platform independent manner.
1394 [Ben Laurie (CHATS)]
1396 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1397 resizing buffers containing secrets, and use where appropriate.
1398 [Ben Laurie (CHATS)]
1400 *) Add BIO_indent() to avoid much slightly worrying code to do
1402 [Ben Laurie (CHATS)]
1404 *) Convert sprintf()/BIO_puts() to BIO_printf().
1405 [Ben Laurie (CHATS)]
1407 *) buffer_gets() could terminate with the buffer only half
1409 [Ben Laurie (CHATS)]
1411 *) Add assertions to prevent user-supplied crypto functions from
1412 overflowing internal buffers by having large block sizes, etc.
1413 [Ben Laurie (CHATS)]
1415 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1417 [Ben Laurie (CHATS)]
1419 *) Eliminate unused copy of key in RC4.
1420 [Ben Laurie (CHATS)]
1422 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1423 [Ben Laurie (CHATS)]
1425 *) Fix off-by-one error in EGD path.
1426 [Ben Laurie (CHATS)]
1428 *) If RANDFILE path is too long, ignore instead of truncating.
1429 [Ben Laurie (CHATS)]
1431 *) Eliminate unused and incorrectly sized X.509 structure
1433 [Ben Laurie (CHATS)]
1435 *) Eliminate unused and dangerous function knumber().
1436 [Ben Laurie (CHATS)]
1438 *) Eliminate unused and dangerous structure, KSSL_ERR.
1439 [Ben Laurie (CHATS)]
1441 *) Protect against overlong session ID context length in an encoded
1442 session object. Since these are local, this does not appear to be
1444 [Ben Laurie (CHATS)]
1446 *) Change from security patch (see 0.9.6e below) that did not affect
1447 the 0.9.6 release series:
1449 Remote buffer overflow in SSL3 protocol - an attacker could
1450 supply an oversized master key in Kerberos-enabled versions.
1452 [Ben Laurie (CHATS)]
1454 *) Change the SSL kerb5 codes to match RFC 2712.
1457 *) Make -nameopt work fully for req and add -reqopt switch.
1458 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1460 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1461 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1463 *) Make sure tests can be performed even if the corresponding algorithms
1464 have been removed entirely. This was also the last step to make
1465 OpenSSL compilable with DJGPP under all reasonable conditions.
1466 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1468 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1469 to allow version independent disabling of normally unselected ciphers,
1470 which may be activated as a side-effect of selecting a single cipher.
1472 (E.g., cipher list string "RSA" enables ciphersuites that are left
1473 out of "ALL" because they do not provide symmetric encryption.
1474 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1475 [Lutz Jaenicke, Bodo Moeller]
1477 *) Add appropriate support for separate platform-dependent build
1478 directories. The recommended way to make a platform-dependent
1479 build directory is the following (tested on Linux), maybe with
1482 # Place yourself outside of the OpenSSL source tree. In
1483 # this example, the environment variable OPENSSL_SOURCE
1484 # is assumed to contain the absolute OpenSSL source directory.
1485 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1486 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1487 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1488 mkdir -p `dirname $F`
1489 ln -s $OPENSSL_SOURCE/$F $F
1492 To be absolutely sure not to disturb the source tree, a "make clean"
1493 is a good thing. If it isn't successfull, don't worry about it,
1494 it probably means the source directory is very clean.
1497 *) Make sure any ENGINE control commands make local copies of string
1498 pointers passed to them whenever necessary. Otherwise it is possible
1499 the caller may have overwritten (or deallocated) the original string
1500 data when a later ENGINE operation tries to use the stored values.
1501 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1503 *) Improve diagnostics in file reading and command-line digests.
1504 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1506 *) Add AES modes CFB and OFB to the object database. Correct an
1507 error in AES-CFB decryption.
1510 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1511 allows existing EVP_CIPHER_CTX structures to be reused after
1512 calling EVP_*Final(). This behaviour is used by encryption
1513 BIOs and some applications. This has the side effect that
1514 applications must explicitly clean up cipher contexts with
1515 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1518 *) Check the values of dna and dnb in bn_mul_recursive before calling
1519 bn_mul_comba (a non zero value means the a or b arrays do not contain
1520 n2 elements) and fallback to bn_mul_normal if either is not zero.
1523 *) Fix escaping of non-ASCII characters when using the -subj option
1524 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1527 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1528 form for "surname", serialNumber has no short form.
1529 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1530 therefore remove "mail" short name for "internet 7".
1531 The OID for unique identifiers in X509 certificates is
1532 x500UniqueIdentifier, not uniqueIdentifier.
1533 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1536 *) Add an "init" command to the ENGINE config module and auto initialize
1537 ENGINEs. Without any "init" command the ENGINE will be initialized
1538 after all ctrl commands have been executed on it. If init=1 the
1539 ENGINE is initailized at that point (ctrls before that point are run
1540 on the uninitialized ENGINE and after on the initialized one). If
1541 init=0 then the ENGINE will not be iniatialized at all.
1544 *) Fix the 'app_verify_callback' interface so that the user-defined
1545 argument is actually passed to the callback: In the
1546 SSL_CTX_set_cert_verify_callback() prototype, the callback
1547 declaration has been changed from
1550 int (*cb)(X509_STORE_CTX *,void *);
1551 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1552 i=s->ctx->app_verify_callback(&ctx)
1553 has been changed into
1554 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1556 To update applications using SSL_CTX_set_cert_verify_callback(),
1557 a dummy argument can be added to their callback functions.
1558 [D. K. Smetters <smetters@parc.xerox.com>]
1560 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1561 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1563 *) Add and OPENSSL_LOAD_CONF define which will cause
1564 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1565 This allows older applications to transparently support certain
1566 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1567 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1568 load the config file and OPENSSL_add_all_algorithms_conf() which will
1569 always load it have also been added.
1572 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1573 Adjust NIDs and EVP layer.
1574 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1576 *) Config modules support in openssl utility.
1578 Most commands now load modules from the config file,
1579 though in a few (such as version) this isn't done
1580 because it couldn't be used for anything.
1582 In the case of ca and req the config file used is
1583 the same as the utility itself: that is the -config
1584 command line option can be used to specify an
1588 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1589 use "openssl_conf" if filename is NULL use default openssl config file.
1592 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1593 config section name. Add a new flag to tolerate a missing config file
1594 and move code to CONF_modules_load_file().
1597 *) Support for crypto accelerator cards from Accelerated Encryption
1598 Processing, www.aep.ie. (Use engine 'aep')
1599 The support was copied from 0.9.6c [engine] and adapted/corrected
1600 to work with the new engine framework.
1601 [AEP Inc. and Richard Levitte]
1603 *) Support for SureWare crypto accelerator cards from Baltimore
1604 Technologies. (Use engine 'sureware')
1605 The support was copied from 0.9.6c [engine] and adapted
1606 to work with the new engine framework.
1609 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1610 make the newer ENGINE framework commands for the CHIL engine work.
1611 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1613 *) Make it possible to produce shared libraries on ReliantUNIX.
1614 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1616 *) Add the configuration target debug-linux-ppro.
1617 Make 'openssl rsa' use the general key loading routines
1618 implemented in apps.c, and make those routines able to
1619 handle the key format FORMAT_NETSCAPE and the variant
1621 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1623 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1624 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1626 *) Add -keyform to rsautl, and document -engine.
1627 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1629 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1630 BIO_R_NO_SUCH_FILE error code rather than the generic
1631 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1634 *) Add new functions
1636 ERR_peek_last_error_line
1637 ERR_peek_last_error_line_data.
1638 These are similar to
1641 ERR_peek_error_line_data,
1642 but report on the latest error recorded rather than the first one
1643 still in the error queue.
1644 [Ben Laurie, Bodo Moeller]
1646 *) default_algorithms option in ENGINE config module. This allows things
1648 default_algorithms = ALL
1649 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1652 *) Prelminary ENGINE config module.
1655 *) New experimental application configuration code.
1658 *) Change the AES code to follow the same name structure as all other
1659 symmetric ciphers, and behave the same way. Move everything to
1660 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1661 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1663 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1664 [Ben Laurie and Theo de Raadt]
1666 *) Add option to output public keys in req command.
1667 [Massimiliano Pala madwolf@openca.org]
1669 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1670 (up to about 10% better than before for P-192 and P-224).
1673 *) New functions/macros
1675 SSL_CTX_set_msg_callback(ctx, cb)
1676 SSL_CTX_set_msg_callback_arg(ctx, arg)
1677 SSL_set_msg_callback(ssl, cb)
1678 SSL_set_msg_callback_arg(ssl, arg)
1680 to request calling a callback function
1682 void cb(int write_p, int version, int content_type,
1683 const void *buf, size_t len, SSL *ssl, void *arg)
1685 whenever a protocol message has been completely received
1686 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1687 protocol version according to which the SSL library interprets
1688 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1689 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1690 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1691 specification (change_cipher_spec(20), alert(21), handshake(22)).
1692 'buf' and 'len' point to the actual message, 'ssl' to the
1693 SSL object, and 'arg' is the application-defined value set by
1694 SSL[_CTX]_set_msg_callback_arg().
1696 'openssl s_client' and 'openssl s_server' have new '-msg' options
1697 to enable a callback that displays all protocol messages.
1700 *) Change the shared library support so shared libraries are built as
1701 soon as the corresponding static library is finished, and thereby get
1702 openssl and the test programs linked against the shared library.
1703 This still only happens when the keyword "shard" has been given to
1704 the configuration scripts.
1706 NOTE: shared library support is still an experimental thing, and
1707 backward binary compatibility is still not guaranteed.
1708 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1710 *) Add support for Subject Information Access extension.
1711 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1713 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1714 additional bytes when new memory had to be allocated, not just
1715 when reusing an existing buffer.
1718 *) New command line and configuration option 'utf8' for the req command.
1719 This allows field values to be specified as UTF8 strings.
1722 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1723 runs for the former and machine-readable output for the latter.
1726 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1727 of the e-mail address in the DN (i.e., it will go into a certificate
1728 extension only). The new configuration file option 'email_in_dn = no'
1729 has the same effect.
1730 [Massimiliano Pala madwolf@openca.org]
1732 *) Change all functions with names starting with des_ to be starting
1733 with DES_ instead. Add wrappers that are compatible with libdes,
1734 but are named _ossl_old_des_*. Finally, add macros that map the
1735 des_* symbols to the corresponding _ossl_old_des_* if libdes
1736 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1737 desired, the des_* symbols will be mapped to DES_*, with one
1740 Since we provide two compatibility mappings, the user needs to
1741 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1742 compatibility is desired. The default (i.e., when that macro
1743 isn't defined) is OpenSSL 0.9.6c compatibility.
1745 There are also macros that enable and disable the support of old
1746 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1747 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1748 are defined, the default will apply: to support the old des routines.
1750 In either case, one must include openssl/des.h to get the correct
1751 definitions. Do not try to just include openssl/des_old.h, that
1754 NOTE: This is a major break of an old API into a new one. Software
1755 authors are encouraged to switch to the DES_ style functions. Some
1756 time in the future, des_old.h and the libdes compatibility functions
1757 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1758 default), and then completely removed.
1761 *) Test for certificates which contain unsupported critical extensions.
1762 If such a certificate is found during a verify operation it is
1763 rejected by default: this behaviour can be overridden by either
1764 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1765 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1766 X509_supported_extension() has also been added which returns 1 if a
1767 particular extension is supported.
1770 *) Modify the behaviour of EVP cipher functions in similar way to digests
1771 to retain compatibility with existing code.
1774 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1775 compatibility with existing code. In particular the 'ctx' parameter does
1776 not have to be to be initialized before the call to EVP_DigestInit() and
1777 it is tidied up after a call to EVP_DigestFinal(). New function
1778 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1779 EVP_MD_CTX_copy() changed to not require the destination to be
1780 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1781 requires the destination to be valid.
1783 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1784 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1787 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1788 so that complete 'Handshake' protocol structures are kept in memory
1789 instead of overwriting 'msg_type' and 'length' with 'body' data.
1792 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1793 [Massimo Santin via Richard Levitte]
1795 *) Major restructuring to the underlying ENGINE code. This includes
1796 reduction of linker bloat, separation of pure "ENGINE" manipulation
1797 (initialisation, etc) from functionality dealing with implementations
1798 of specific crypto iterfaces. This change also introduces integrated
1799 support for symmetric ciphers and digest implementations - so ENGINEs
1800 can now accelerate these by providing EVP_CIPHER and EVP_MD
1801 implementations of their own. This is detailed in crypto/engine/README
1802 as it couldn't be adequately described here. However, there are a few
1803 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1804 were changed in the original introduction of ENGINE code have now
1805 reverted back - the hooking from this code to ENGINE is now a good
1806 deal more passive and at run-time, operations deal directly with
1807 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1808 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1809 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1810 they were not being used by the framework as there is no concept of a
1811 BIGNUM_METHOD and they could not be generalised to the new
1812 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1813 ENGINE_cpy() has been removed as it cannot be consistently defined in
1817 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1820 *) Change mkdef.pl to sort symbols that get the same entry number,
1821 and make sure the automatically generated functions ERR_load_*
1822 become part of libeay.num as well.
1825 *) New function SSL_renegotiate_pending(). This returns true once
1826 renegotiation has been requested (either SSL_renegotiate() call
1827 or HelloRequest/ClientHello receveived from the peer) and becomes
1828 false once a handshake has been completed.
1829 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1830 sends a HelloRequest, but does not ensure that a handshake takes
1831 place. SSL_renegotiate_pending() is useful for checking if the
1832 client has followed the request.)
1835 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1836 By default, clients may request session resumption even during
1837 renegotiation (if session ID contexts permit); with this option,
1838 session resumption is possible only in the first handshake.
1840 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1841 more bits available for options that should not be part of
1842 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1845 *) Add some demos for certificate and certificate request creation.
1848 *) Make maximum certificate chain size accepted from the peer application
1849 settable (SSL*_get/set_max_cert_list()), as proposed by
1850 "Douglas E. Engert" <deengert@anl.gov>.
1853 *) Add support for shared libraries for Unixware-7
1854 (Boyd Lynn Gerber <gerberb@zenez.com>).
1857 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1858 be done prior to destruction. Use this to unload error strings from
1859 ENGINEs that load their own error strings. NB: This adds two new API
1860 functions to "get" and "set" this destroy handler in an ENGINE.
1863 *) Alter all existing ENGINE implementations (except "openssl" and
1864 "openbsd") to dynamically instantiate their own error strings. This
1865 makes them more flexible to be built both as statically-linked ENGINEs
1866 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1867 Also, add stub code to each that makes building them as self-contained
1868 shared-libraries easier (see README.ENGINE).
1871 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1872 implementations into applications that are completely implemented in
1873 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1874 commands that can be used to configure what shared-library to load and
1875 to control aspects of the way it is handled. Also, made an update to
1876 the README.ENGINE file that brings its information up-to-date and
1877 provides some information and instructions on the "dynamic" ENGINE
1878 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1881 *) Make it possible to unload ranges of ERR strings with a new
1882 "ERR_unload_strings" function.
1885 *) Add a copy() function to EVP_MD.
1888 *) Make EVP_MD routines take a context pointer instead of just the
1889 md_data void pointer.
1892 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1893 that the digest can only process a single chunk of data
1894 (typically because it is provided by a piece of
1895 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1896 is only going to provide a single chunk of data, and hence the
1897 framework needn't accumulate the data for oneshot drivers.
1900 *) As with "ERR", make it possible to replace the underlying "ex_data"
1901 functions. This change also alters the storage and management of global
1902 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1903 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1904 index counters. The API functions that use this state have been changed
1905 to take a "class_index" rather than pointers to the class's local STACK
1906 and counter, and there is now an API function to dynamically create new
1907 classes. This centralisation allows us to (a) plug a lot of the
1908 thread-safety problems that existed, and (b) makes it possible to clean
1909 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1910 such data would previously have always leaked in application code and
1911 workarounds were in place to make the memory debugging turn a blind eye
1912 to it. Application code that doesn't use this new function will still
1913 leak as before, but their memory debugging output will announce it now
1914 rather than letting it slide.
1916 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1917 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1918 has a return value to indicate success or failure.
1921 *) Make it possible to replace the underlying "ERR" functions such that the
1922 global state (2 LHASH tables and 2 locks) is only used by the "default"
1923 implementation. This change also adds two functions to "get" and "set"
1924 the implementation prior to it being automatically set the first time
1925 any other ERR function takes place. Ie. an application can call "get",
1926 pass the return value to a module it has just loaded, and that module
1927 can call its own "set" function using that value. This means the
1928 module's "ERR" operations will use (and modify) the error state in the
1929 application and not in its own statically linked copy of OpenSSL code.
1932 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1933 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1934 the operation, and provides a more encapsulated way for external code
1935 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1936 to use these functions rather than manually incrementing the counts.
1938 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1941 *) Add EVP test program.
1944 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1947 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1948 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1949 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1950 These allow a CRL to be built without having to access X509_CRL fields
1951 directly. Modify 'ca' application to use new functions.
1954 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1955 bug workarounds. Rollback attack detection is a security feature.
1956 The problem will only arise on OpenSSL servers when TLSv1 is not
1957 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1958 Software authors not wanting to support TLSv1 will have special reasons
1959 for their choice and can explicitly enable this option.
1960 [Bodo Moeller, Lutz Jaenicke]
1962 *) Rationalise EVP so it can be extended: don't include a union of
1963 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1964 (similar to those existing for EVP_CIPHER_CTX).
1969 EVP_MD_CTX_init(&md); /* new function call */
1970 EVP_DigestInit(&md, EVP_sha1());
1971 EVP_DigestUpdate(&md, in, len);
1972 EVP_DigestFinal(&md, out, NULL);
1973 EVP_MD_CTX_cleanup(&md); /* new function call */
1977 *) Make DES key schedule conform to the usual scheme, as well as
1978 correcting its structure. This means that calls to DES functions
1979 now have to pass a pointer to a des_key_schedule instead of a
1980 plain des_key_schedule (which was actually always a pointer
1983 des_key_schedule ks;
1985 des_set_key_checked(..., &ks);
1986 des_ncbc_encrypt(..., &ks, ...);
1988 (Note that a later change renames 'des_...' into 'DES_...'.)
1991 *) Initial reduction of linker bloat: the use of some functions, such as
1992 PEM causes large amounts of unused functions to be linked in due to
1993 poor organisation. For example pem_all.c contains every PEM function
1994 which has a knock on effect of linking in large amounts of (unused)
1995 ASN1 code. Grouping together similar functions and splitting unrelated
1996 functions prevents this.
1999 *) Cleanup of EVP macros.
2002 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2003 correct _ecb suffix.
2006 *) Add initial OCSP responder support to ocsp application. The
2007 revocation information is handled using the text based index
2008 use by the ca application. The responder can either handle
2009 requests generated internally, supplied in files (for example
2010 via a CGI script) or using an internal minimal server.
2013 *) Add configuration choices to get zlib compression for TLS.
2016 *) Changes to Kerberos SSL for RFC 2712 compliance:
2017 1. Implemented real KerberosWrapper, instead of just using
2018 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2019 2. Implemented optional authenticator field of KerberosWrapper.
2021 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2022 and authenticator structs; see crypto/krb5/.
2024 Generalized Kerberos calls to support multiple Kerberos libraries.
2025 [Vern Staats <staatsvr@asc.hpc.mil>,
2026 Jeffrey Altman <jaltman@columbia.edu>
2027 via Richard Levitte]
2029 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2030 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2031 values for each of the key sizes rather than having just
2032 parameters (and 'speed' generating keys each time).
2035 *) Speed up EVP routines.
2038 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2039 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2040 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2041 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2043 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2044 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2045 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2048 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2050 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2053 *) Added the OS2-EMX target.
2054 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2056 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2057 to support NCONF routines in extension code. New function CONF_set_nconf()
2058 to allow functions which take an NCONF to also handle the old LHASH
2059 structure: this means that the old CONF compatible routines can be
2060 retained (in particular wrt extensions) without having to duplicate the
2061 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2064 *) Enhance the general user interface with mechanisms for inner control
2065 and with possibilities to have yes/no kind of prompts.
2068 *) Change all calls to low level digest routines in the library and
2069 applications to use EVP. Add missing calls to HMAC_cleanup() and
2070 don't assume HMAC_CTX can be copied using memcpy().
2071 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2073 *) Add the possibility to control engines through control names but with
2074 arbitrary arguments instead of just a string.
2075 Change the key loaders to take a UI_METHOD instead of a callback
2076 function pointer. NOTE: this breaks binary compatibility with earlier
2077 versions of OpenSSL [engine].
2078 Adapt the nCipher code for these new conditions and add a card insertion
2082 *) Enhance the general user interface with mechanisms to better support
2083 dialog box interfaces, application-defined prompts, the possibility
2084 to use defaults (for example default passwords from somewhere else)
2085 and interrupts/cancellations.
2088 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2089 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2092 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2093 tidy up some unnecessarily weird code in 'sk_new()').
2094 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2096 *) Change the key loading routines for ENGINEs to use the same kind
2097 callback (pem_password_cb) as all other routines that need this
2101 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2102 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2103 than this minimum value is recommended.
2106 *) New random seeder for OpenVMS, using the system process statistics
2107 that are easily reachable.
2110 *) Windows apparently can't transparently handle global
2111 variables defined in DLLs. Initialisations such as:
2113 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2115 wont compile. This is used by the any applications that need to
2116 declare their own ASN1 modules. This was fixed by adding the option
2117 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2118 needed for static libraries under Win32.
2121 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2122 setting of purpose and trust fields. New X509_STORE trust and
2123 purpose functions and tidy up setting in other SSL functions.
2126 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2127 structure. These are inherited by X509_STORE_CTX when it is
2128 initialised. This allows various defaults to be set in the
2129 X509_STORE structure (such as flags for CRL checking and custom
2130 purpose or trust settings) for functions which only use X509_STORE_CTX
2131 internally such as S/MIME.
2133 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2134 trust settings if they are not set in X509_STORE. This allows X509_STORE
2135 purposes and trust (in S/MIME for example) to override any set by default.
2137 Add command line options for CRL checking to smime, s_client and s_server
2141 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2142 are set then the CRL is looked up in the X509_STORE structure and
2143 its validity and signature checked, then if the certificate is found
2144 in the CRL the verify fails with a revoked error.
2146 Various new CRL related callbacks added to X509_STORE_CTX structure.
2148 Command line options added to 'verify' application to support this.
2150 This needs some additional work, such as being able to handle multiple
2151 CRLs with different times, extension based lookup (rather than just
2152 by subject name) and ultimately more complete V2 CRL extension
2156 *) Add a general user interface API (crypto/ui/). This is designed
2157 to replace things like des_read_password and friends (backward
2158 compatibility functions using this new API are provided).
2159 The purpose is to remove prompting functions from the DES code
2160 section as well as provide for prompting through dialog boxes in
2161 a window system and the like.
2164 *) Add "ex_data" support to ENGINE so implementations can add state at a
2165 per-structure level rather than having to store it globally.
2168 *) Make it possible for ENGINE structures to be copied when retrieved by
2169 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2170 This causes the "original" ENGINE structure to act like a template,
2171 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2172 operational state can be localised to each ENGINE structure, despite the
2173 fact they all share the same "methods". New ENGINE structures returned in
2174 this case have no functional references and the return value is the single
2175 structural reference. This matches the single structural reference returned
2176 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2180 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2181 needs to match any other type at all we need to manually clear the
2185 *) Changes to the "openssl engine" utility to include;
2186 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2187 about an ENGINE's available control commands.
2188 - executing control commands from command line arguments using the
2189 '-pre' and '-post' switches. '-post' is only used if '-t' is
2190 specified and the ENGINE is successfully initialised. The syntax for
2191 the individual commands are colon-separated, for example;
2192 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2195 *) New dynamic control command support for ENGINEs. ENGINEs can now
2196 declare their own commands (numbers), names (strings), descriptions,
2197 and input types for run-time discovery by calling applications. A
2198 subset of these commands are implicitly classed as "executable"
2199 depending on their input type, and only these can be invoked through
2200 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2201 can be based on user input, config files, etc). The distinction is
2202 that "executable" commands cannot return anything other than a boolean
2203 result and can only support numeric or string input, whereas some
2204 discoverable commands may only be for direct use through
2205 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2206 pointers, or other custom uses. The "executable" commands are to
2207 support parameterisations of ENGINE behaviour that can be
2208 unambiguously defined by ENGINEs and used consistently across any
2209 OpenSSL-based application. Commands have been added to all the
2210 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2211 control over shared-library paths without source code alterations.
2214 *) Changed all ENGINE implementations to dynamically allocate their
2215 ENGINEs rather than declaring them statically. Apart from this being
2216 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2217 this also allows the implementations to compile without using the
2218 internal engine_int.h header.
2221 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2222 'const' value. Any code that should be able to modify a RAND_METHOD
2223 should already have non-const pointers to it (ie. they should only
2224 modify their own ones).
2227 *) Made a variety of little tweaks to the ENGINE code.
2228 - "atalla" and "ubsec" string definitions were moved from header files
2229 to C code. "nuron" string definitions were placed in variables
2230 rather than hard-coded - allowing parameterisation of these values
2231 later on via ctrl() commands.
2232 - Removed unused "#if 0"'d code.
2233 - Fixed engine list iteration code so it uses ENGINE_free() to release
2234 structural references.
2235 - Constified the RAND_METHOD element of ENGINE structures.
2236 - Constified various get/set functions as appropriate and added
2237 missing functions (including a catch-all ENGINE_cpy that duplicates
2238 all ENGINE values onto a new ENGINE except reference counts/state).
2239 - Removed NULL parameter checks in get/set functions. Setting a method
2240 or function to NULL is a way of cancelling out a previously set
2241 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2242 and doesn't justify the extra error symbols and code.
2243 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2244 flags from engine_int.h to engine.h.
2245 - Changed prototypes for ENGINE handler functions (init(), finish(),
2246 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2249 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2250 to the algorithm using long division. The binary algorithm can be
2251 used only if the modulus is odd. On 32-bit systems, it is faster
2252 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2253 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2254 up to 450 bits. In 64-bit environments, the binary algorithm
2255 appears to be advantageous for much longer moduli; here we use it
2256 for moduli up to 2048 bits.
2259 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2260 could not support the combine flag in choice fields.
2263 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2264 extensions from a certificate request to the certificate.
2267 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2268 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2269 file: this allows the display of the certificate about to be
2270 signed to be customised, to allow certain fields to be included
2271 or excluded and extension details. The old system didn't display
2272 multicharacter strings properly, omitted fields not in the policy
2273 and couldn't display additional details such as extensions.
2276 *) Function EC_POINTs_mul for multiple scalar multiplication
2277 of an arbitrary number of elliptic curve points
2278 \sum scalars[i]*points[i],
2279 optionally including the generator defined for the EC_GROUP:
2280 scalar*generator + \sum scalars[i]*points[i].
2282 EC_POINT_mul is a simple wrapper function for the typical case
2283 that the point list has just one item (besides the optional
2287 *) First EC_METHODs for curves over GF(p):
2289 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2290 operations and provides various method functions that can also
2291 operate with faster implementations of modular arithmetic.
2293 EC_GFp_mont_method() reuses most functions that are part of
2294 EC_GFp_simple_method, but uses Montgomery arithmetic.
2296 [Bodo Moeller; point addition and point doubling
2297 implementation directly derived from source code provided by
2298 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2300 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2301 crypto/ec/ec_lib.c):
2303 Curves are EC_GROUP objects (with an optional group generator)
2304 based on EC_METHODs that are built into the library.
2306 Points are EC_POINT objects based on EC_GROUP objects.
2308 Most of the framework would be able to handle curves over arbitrary
2309 finite fields, but as there are no obvious types for fields other
2310 than GF(p), some functions are limited to that for now.
2313 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2314 that the file contains a complete HTTP response.
2317 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2318 change the def and num file printf format specifier from "%-40sXXX"
2319 to "%-39s XXX". The latter will always guarantee a space after the
2320 field while the former will cause them to run together if the field
2321 is 40 of more characters long.
2324 *) Constify the cipher and digest 'method' functions and structures
2325 and modify related functions to take constant EVP_MD and EVP_CIPHER
2329 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2330 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2333 *) Modify EVP_Digest*() routines so they now return values. Although the
2334 internal software routines can never fail additional hardware versions
2338 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2340 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2341 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2344 ERR_R_NESTED_ASN1_ERROR
2346 ERR_R_MISSING_ASN1_EOS
2347 were 4 .. 9, conflicting with
2348 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2350 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2351 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2353 Add new error code 'ERR_R_INTERNAL_ERROR'.
2356 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2360 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2361 sets the subject name for a new request or supersedes the
2362 subject name in a given request. Formats that can be parsed are
2363 'CN=Some Name, OU=myOU, C=IT'
2365 'CN=Some Name/OU=myOU/C=IT'.
2367 Add options '-batch' and '-verbose' to 'openssl req'.
2368 [Massimiliano Pala <madwolf@hackmasters.net>]
2370 *) Introduce the possibility to access global variables through
2371 functions on platform were that's the best way to handle exporting
2372 global variables in shared libraries. To enable this functionality,
2373 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2374 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2375 is normally done by Configure or something similar).
2377 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2378 in the source file (foo.c) like this:
2380 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2381 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2383 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2384 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2386 OPENSSL_DECLARE_GLOBAL(int,foo);
2387 #define foo OPENSSL_GLOBAL_REF(foo)
2388 OPENSSL_DECLARE_GLOBAL(double,bar);
2389 #define bar OPENSSL_GLOBAL_REF(bar)
2391 The #defines are very important, and therefore so is including the
2392 header file everywhere where the defined globals are used.
2394 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2395 of ASN.1 items, but that structure is a bit different.
2397 The largest change is in util/mkdef.pl which has been enhanced with
2398 better and easier to understand logic to choose which symbols should
2399 go into the Windows .def files as well as a number of fixes and code
2400 cleanup (among others, algorithm keywords are now sorted
2401 lexicographically to avoid constant rewrites).
2404 *) In BN_div() keep a copy of the sign of 'num' before writing the
2405 result to 'rm' because if rm==num the value will be overwritten
2406 and produce the wrong result if 'num' is negative: this caused
2407 problems with BN_mod() and BN_nnmod().
2410 *) Function OCSP_request_verify(). This checks the signature on an
2411 OCSP request and verifies the signer certificate. The signer
2412 certificate is just checked for a generic purpose and OCSP request
2416 *) Add OCSP_check_validity() function to check the validity of OCSP
2417 responses. OCSP responses are prepared in real time and may only
2418 be a few seconds old. Simply checking that the current time lies
2419 between thisUpdate and nextUpdate max reject otherwise valid responses
2420 caused by either OCSP responder or client clock inaccuracy. Instead
2421 we allow thisUpdate and nextUpdate to fall within a certain period of
2422 the current time. The age of the response can also optionally be
2423 checked. Two new options -validity_period and -status_age added to
2427 *) If signature or public key algorithm is unrecognized print out its
2428 OID rather that just UNKNOWN.
2431 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2432 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2433 ID to be generated from the issuer certificate alone which can then be
2434 passed to OCSP_id_issuer_cmp().
2437 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2438 ASN1 modules to export functions returning ASN1_ITEM pointers
2439 instead of the ASN1_ITEM structures themselves. This adds several
2440 new macros which allow the underlying ASN1 function/structure to
2441 be accessed transparently. As a result code should not use ASN1_ITEM
2442 references directly (such as &X509_it) but instead use the relevant
2443 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2444 use of the new ASN1 code on platforms where exporting structures
2445 is problematical (for example in shared libraries) but exporting
2446 functions returning pointers to structures is not.
2449 *) Add support for overriding the generation of SSL/TLS session IDs.
2450 These callbacks can be registered either in an SSL_CTX or per SSL.
2451 The purpose of this is to allow applications to control, if they wish,
2452 the arbitrary values chosen for use as session IDs, particularly as it
2453 can be useful for session caching in multiple-server environments. A
2454 command-line switch for testing this (and any client code that wishes
2455 to use such a feature) has been added to "s_server".
2456 [Geoff Thorpe, Lutz Jaenicke]
2458 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2459 of the form '#if defined(...) || defined(...) || ...' and
2460 '#if !defined(...) && !defined(...) && ...'. This also avoids
2461 the growing number of special cases it was previously handling.
2464 *) Make all configuration macros available for application by making
2465 sure they are available in opensslconf.h, by giving them names starting
2466 with "OPENSSL_" to avoid conflicts with other packages and by making
2467 sure e_os2.h will cover all platform-specific cases together with
2469 Additionally, it is now possible to define configuration/platform-
2470 specific names (called "system identities"). In the C code, these
2471 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2472 macro with the name beginning with "OPENSSL_SYS_", which is determined
2473 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2477 *) New option -set_serial to 'req' and 'x509' this allows the serial
2478 number to use to be specified on the command line. Previously self
2479 signed certificates were hard coded with serial number 0 and the
2480 CA options of 'x509' had to use a serial number in a file which was
2484 *) New options to 'ca' utility to support V2 CRL entry extensions.
2485 Currently CRL reason, invalidity date and hold instruction are
2486 supported. Add new CRL extensions to V3 code and some new objects.
2489 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2490 disable standard block padding (aka PKCS#5 padding) in the EVP
2491 API, which was previously mandatory. This means that the data is
2492 not padded in any way and so the total length much be a multiple
2493 of the block size, otherwise an error occurs.
2496 *) Initial (incomplete) OCSP SSL support.
2499 *) New function OCSP_parse_url(). This splits up a URL into its host,
2500 port and path components: primarily to parse OCSP URLs. New -url
2501 option to ocsp utility.
2504 *) New nonce behavior. The return value of OCSP_check_nonce() now
2505 reflects the various checks performed. Applications can decide
2506 whether to tolerate certain situations such as an absent nonce
2507 in a response when one was present in a request: the ocsp application
2508 just prints out a warning. New function OCSP_add1_basic_nonce()
2509 this is to allow responders to include a nonce in a response even if
2510 the request is nonce-less.
2513 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2514 skipped when using openssl x509 multiple times on a single input file,
2515 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2518 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2519 set string type: to handle setting ASN1_TIME structures. Fix ca
2520 utility to correctly initialize revocation date of CRLs.
2523 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2524 the clients preferred ciphersuites and rather use its own preferences.
2525 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2526 Internet Explorer by ensuring unchanged hash method during stepup.
2527 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2530 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2531 to aes and add a new 'exist' option to print out symbols that don't
2535 *) Additional options to ocsp utility to allow flags to be set and
2536 additional certificates supplied.
2539 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2540 OCSP client a number of certificate to only verify the response
2544 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2545 handle the new API. Currently only ECB, CBC modes supported. Add new
2548 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2549 Encryption Standard (AES) Ciphersuites for Transport Layer
2550 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2551 not enabled by default and were not part of the "ALL" ciphersuite
2552 alias because they were not yet official; they could be
2553 explicitly requested by specifying the "AESdraft" ciphersuite
2554 group alias. In the final release of OpenSSL 0.9.7, the group
2555 alias is called "AES" and is part of "ALL".)
2556 [Ben Laurie, Steve Henson, Bodo Moeller]
2558 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2559 request to response.
2562 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2563 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2564 extract information from a certificate request. OCSP_response_create()
2565 creates a response and optionally adds a basic response structure.
2566 OCSP_basic_add1_status() adds a complete single response to a basic
2567 response and returns the OCSP_SINGLERESP structure just added (to allow
2568 extensions to be included for example). OCSP_basic_add1_cert() adds a
2569 certificate to a basic response and OCSP_basic_sign() signs a basic
2570 response with various flags. New helper functions ASN1_TIME_check()
2571 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2572 (converts ASN1_TIME to GeneralizedTime).
2575 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2576 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2577 structure from a certificate. X509_pubkey_digest() digests the public_key
2578 contents: this is used in various key identifiers.
2581 *) Make sk_sort() tolerate a NULL argument.
2582 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2584 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2585 passed by the function are trusted implicitly. If any of them signed the
2586 response then it is assumed to be valid and is not verified.
2589 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2590 to data. This was previously part of the PKCS7 ASN1 code. This
2591 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2592 [Steve Henson, reported by Kenneth R. Robinette
2593 <support@securenetterm.com>]
2595 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2596 routines: without these tracing memory leaks is very painful.
2597 Fix leaks in PKCS12 and PKCS7 routines.
2600 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2601 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2602 effectively meant GeneralizedTime would never be used. Now it
2603 is initialised to -1 but X509_time_adj() now has to check the value
2604 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2605 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2606 [Steve Henson, reported by Kenneth R. Robinette
2607 <support@securenetterm.com>]
2609 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2610 result in a zero length in the ASN1_INTEGER structure which was
2611 not consistent with the structure when d2i_ASN1_INTEGER() was used
2612 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2613 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2614 where it did not print out a minus for negative ASN1_INTEGER.
2617 *) Add summary printout to ocsp utility. The various functions which
2618 convert status values to strings have been renamed to:
2619 OCSP_response_status_str(), OCSP_cert_status_str() and
2620 OCSP_crl_reason_str() and are no longer static. New options
2621 to verify nonce values and to disable verification. OCSP response
2622 printout format cleaned up.
2625 *) Add additional OCSP certificate checks. These are those specified
2626 in RFC2560. This consists of two separate checks: the CA of the
2627 certificate being checked must either be the OCSP signer certificate
2628 or the issuer of the OCSP signer certificate. In the latter case the
2629 OCSP signer certificate must contain the OCSP signing extended key
2630 usage. This check is performed by attempting to match the OCSP
2631 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2632 in the OCSP_CERTID structures of the response.
2635 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2636 and related routines. This uses the standard OpenSSL certificate
2637 verify routines to perform initial checks (just CA validity) and
2638 to obtain the certificate chain. Then additional checks will be
2639 performed on the chain. Currently the root CA is checked to see
2640 if it is explicitly trusted for OCSP signing. This is used to set
2641 a root CA as a global signing root: that is any certificate that
2642 chains to that CA is an acceptable OCSP signing certificate.
2645 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2646 extensions from a separate configuration file.
2647 As when reading extensions from the main configuration file,
2648 the '-extensions ...' option may be used for specifying the
2650 [Massimiliano Pala <madwolf@comune.modena.it>]
2652 *) New OCSP utility. Allows OCSP requests to be generated or
2653 read. The request can be sent to a responder and the output
2654 parsed, outputed or printed in text form. Not complete yet:
2655 still needs to check the OCSP response validity.
2658 *) New subcommands for 'openssl ca':
2659 'openssl ca -status <serial>' prints the status of the cert with
2660 the given serial number (according to the index file).
2661 'openssl ca -updatedb' updates the expiry status of certificates
2663 [Massimiliano Pala <madwolf@comune.modena.it>]
2665 *) New '-newreq-nodes' command option to CA.pl. This is like
2666 '-newreq', but calls 'openssl req' with the '-nodes' option
2667 so that the resulting key is not encrypted.
2668 [Damien Miller <djm@mindrot.org>]
2670 *) New configuration for the GNU Hurd.
2671 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2673 *) Initial code to implement OCSP basic response verify. This
2674 is currently incomplete. Currently just finds the signer's
2675 certificate and verifies the signature on the response.
2678 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2679 value of OPENSSLDIR. This is available via the new '-d' option
2680 to 'openssl version', and is also included in 'openssl version -a'.
2683 *) Allowing defining memory allocation callbacks that will be given
2684 file name and line number information in additional arguments
2685 (a const char* and an int). The basic functionality remains, as
2686 well as the original possibility to just replace malloc(),
2687 realloc() and free() by functions that do not know about these
2688 additional arguments. To register and find out the current
2689 settings for extended allocation functions, the following
2690 functions are provided:
2692 CRYPTO_set_mem_ex_functions
2693 CRYPTO_set_locked_mem_ex_functions
2694 CRYPTO_get_mem_ex_functions
2695 CRYPTO_get_locked_mem_ex_functions
2697 These work the same way as CRYPTO_set_mem_functions and friends.
2698 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2699 extended allocation function is enabled.
2700 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2701 a conventional allocation function is enabled.
2702 [Richard Levitte, Bodo Moeller]
2704 *) Finish off removing the remaining LHASH function pointer casts.
2705 There should no longer be any prototype-casting required when using
2706 the LHASH abstraction, and any casts that remain are "bugs". See
2707 the callback types and macros at the head of lhash.h for details
2708 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2711 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2712 If /dev/[u]random devices are not available or do not return enough
2713 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2715 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2716 /etc/entropy will be queried once each in this sequence, quering stops
2717 when enough entropy was collected without querying more sockets.
2720 *) Change the Unix RAND_poll() variant to be able to poll several
2721 random devices, as specified by DEVRANDOM, until a sufficient amount
2722 of data has been collected. We spend at most 10 ms on each file
2723 (select timeout) and read in non-blocking mode. DEVRANDOM now
2724 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2725 (previously it was just the string "/dev/urandom"), so on typical
2726 platforms the 10 ms delay will never occur.
2727 Also separate out the Unix variant to its own file, rand_unix.c.
2728 For VMS, there's a currently-empty rand_vms.c.
2731 *) Move OCSP client related routines to ocsp_cl.c. These
2732 provide utility functions which an application needing
2733 to issue a request to an OCSP responder and analyse the
2734 response will typically need: as opposed to those which an
2735 OCSP responder itself would need which will be added later.
2737 OCSP_request_sign() signs an OCSP request with an API similar
2738 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2739 response. OCSP_response_get1_basic() extracts basic response
2740 from response. OCSP_resp_find_status(): finds and extracts status
2741 information from an OCSP_CERTID structure (which will be created
2742 when the request structure is built). These are built from lower
2743 level functions which work on OCSP_SINGLERESP structures but
2744 wont normally be used unless the application wishes to examine
2745 extensions in the OCSP response for example.
2747 Replace nonce routines with a pair of functions.
2748 OCSP_request_add1_nonce() adds a nonce value and optionally
2749 generates a random value. OCSP_check_nonce() checks the
2750 validity of the nonce in an OCSP response.
2753 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2754 This doesn't copy the supplied OCSP_CERTID and avoids the
2755 need to free up the newly created id. Change return type
2756 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2757 This can then be used to add extensions to the request.
2758 Deleted OCSP_request_new(), since most of its functionality
2759 is now in OCSP_REQUEST_new() (and the case insensitive name
2760 clash) apart from the ability to set the request name which
2761 will be added elsewhere.
2764 *) Update OCSP API. Remove obsolete extensions argument from
2765 various functions. Extensions are now handled using the new
2766 OCSP extension code. New simple OCSP HTTP function which
2767 can be used to send requests and parse the response.
2770 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2771 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2772 uses the special reorder version of SET OF to sort the attributes
2773 and reorder them to match the encoded order. This resolves a long
2774 standing problem: a verify on a PKCS7 structure just after signing
2775 it used to fail because the attribute order did not match the
2776 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2777 it uses the received order. This is necessary to tolerate some broken
2778 software that does not order SET OF. This is handled by encoding
2779 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2780 to produce the required SET OF.
2783 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2784 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2785 files to get correct declarations of the ASN.1 item variables.
2788 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2789 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2790 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2791 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2792 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2793 ASN1_ITEM and no wrapper functions.
2796 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2797 replace the old function pointer based I/O routines. Change most of
2798 the *_d2i_bio() and *_d2i_fp() functions to use these.
2801 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2802 lines, recognice more "algorithms" that can be deselected, and make
2803 it complain about algorithm deselection that isn't recognised.
2806 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2807 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2808 to use new functions. Add NO_ASN1_OLD which can be set to remove
2809 some old style ASN1 functions: this can be used to determine if old
2810 code will still work when these eventually go away.
2813 *) New extension functions for OCSP structures, these follow the
2814 same conventions as certificates and CRLs.
2817 *) New function X509V3_add1_i2d(). This automatically encodes and
2818 adds an extension. Its behaviour can be customised with various
2819 flags to append, replace or delete. Various wrappers added for
2820 certifcates and CRLs.
2823 *) Fix to avoid calling the underlying ASN1 print routine when
2824 an extension cannot be parsed. Correct a typo in the
2825 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2828 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2829 entries for variables.
2832 *) Add functionality to apps/openssl.c for detecting locking
2833 problems: As the program is single-threaded, all we have
2834 to do is register a locking callback using an array for
2835 storing which locks are currently held by the program.
2838 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2839 SSL_get_ex_data_X509_STORE_idx(), which is used in
2840 ssl_verify_cert_chain() and thus can be called at any time
2841 during TLS/SSL handshakes so that thread-safety is essential.
2842 Unfortunately, the ex_data design is not at all suited
2843 for multi-threaded use, so it probably should be abolished.
2846 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2847 [Broadcom, tweaked and integrated by Geoff Thorpe]
2849 *) Move common extension printing code to new function
2850 X509V3_print_extensions(). Reorganise OCSP print routines and
2851 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2854 *) New function X509_signature_print() to remove duplication in some
2858 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2859 set (this was treated exactly the same as SET OF previously). This
2860 is used to reorder the STACK representing the structure to match the
2861 encoding. This will be used to get round a problem where a PKCS7
2862 structure which was signed could not be verified because the STACK
2863 order did not reflect the encoded order.
2866 *) Reimplement the OCSP ASN1 module using the new code.
2869 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2870 for its ASN1 operations. The old style function pointers still exist
2871 for now but they will eventually go away.
2874 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2875 completely replaces the old ASN1 functionality with a table driven
2876 encoder and decoder which interprets an ASN1_ITEM structure describing
2877 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2878 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2879 has also been converted to the new form.
2882 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2883 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2884 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2885 for negative moduli.
2888 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2889 of not touching the result's sign bit.
2892 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2896 *) Changed the LHASH code to use prototypes for callbacks, and created
2897 macros to declare and implement thin (optionally static) functions
2898 that provide type-safety and avoid function pointer casting for the
2899 type-specific callbacks.
2902 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2904 [Veers Staats <staatsvr@asc.hpc.mil>,
2905 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2907 *) Reformat the FAQ so the different questions and answers can be divided
2908 in sections depending on the subject.
2911 *) Have the zlib compression code load ZLIB.DLL dynamically under
2915 *) New function BN_mod_sqrt for computing square roots modulo a prime
2916 (using the probabilistic Tonelli-Shanks algorithm unless
2917 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2918 be handled deterministically).
2919 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2921 *) Make BN_mod_inverse faster by explicitly handling small quotients
2922 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2923 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2926 *) New function BN_kronecker.
2929 *) Fix BN_gcd so that it works on negative inputs; the result is
2930 positive unless both parameters are zero.
2931 Previously something reasonably close to an infinite loop was
2932 possible because numbers could be growing instead of shrinking
2933 in the implementation of Euclid's algorithm.
2936 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2937 sign of the number in question.
2939 Fix BN_is_word(a,w) to work correctly for w == 0.
2941 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2942 because its test if the absolute value of 'a' equals 'w'.
2943 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2944 it exists mostly for use in the implementations of BN_is_zero(),
2945 BN_is_one(), and BN_is_word().
2948 *) New function BN_swap.
2951 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2952 the exponentiation functions are more likely to produce reasonable
2953 results on negative inputs.
2956 *) Change BN_mod_mul so that the result is always non-negative.
2957 Previously, it could be negative if one of the factors was negative;
2958 I don't think anyone really wanted that behaviour.
2961 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2962 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2963 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2964 and add new functions:
2973 BN_mod_lshift1_quick
2977 These functions always generate non-negative results.
2979 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2980 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2982 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2983 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2984 be reduced modulo m.
2985 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2988 The following entry accidentily appeared in the CHANGES file
2989 distributed with OpenSSL 0.9.7. The modifications described in
2990 it do *not* apply to OpenSSL 0.9.7.
2992 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2993 was actually never needed) and in BN_mul(). The removal in BN_mul()
2994 required a small change in bn_mul_part_recursive() and the addition
2995 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2996 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2997 bn_sub_words() and bn_add_words() except they take arrays with
3002 *) In 'openssl passwd', verify passwords read from the terminal
3003 unless the '-salt' option is used (which usually means that
3004 verification would just waste user's time since the resulting
3005 hash is going to be compared with some given password hash)
3006 or the new '-noverify' option is used.
3008 This is an incompatible change, but it does not affect
3009 non-interactive use of 'openssl passwd' (passwords on the command
3010 line, '-stdin' option, '-in ...' option) and thus should not
3014 *) Remove all references to RSAref, since there's no more need for it.
3017 *) Make DSO load along a path given through an environment variable
3018 (SHLIB_PATH) with shl_load().
3021 *) Constify the ENGINE code as a result of BIGNUM constification.
3022 Also constify the RSA code and most things related to it. In a
3023 few places, most notable in the depth of the ASN.1 code, ugly
3024 casts back to non-const were required (to be solved at a later
3028 *) Make it so the openssl application has all engines loaded by default.
3031 *) Constify the BIGNUM routines a little more.
3034 *) Add the following functions:
3036 ENGINE_load_cswift()
3038 ENGINE_load_atalla()
3040 ENGINE_load_builtin_engines()
3042 That way, an application can itself choose if external engines that
3043 are built-in in OpenSSL shall ever be used or not. The benefit is
3044 that applications won't have to be linked with libdl or other dso
3045 libraries unless it's really needed.
3047 Changed 'openssl engine' to load all engines on demand.
3048 Changed the engine header files to avoid the duplication of some
3049 declarations (they differed!).
3052 *) 'openssl engine' can now list capabilities.
3055 *) Better error reporting in 'openssl engine'.
3058 *) Never call load_dh_param(NULL) in s_server.
3061 *) Add engine application. It can currently list engines by name and
3062 identity, and test if they are actually available.
3065 *) Improve RPM specification file by forcing symbolic linking and making
3066 sure the installed documentation is also owned by root.root.
3067 [Damien Miller <djm@mindrot.org>]
3069 *) Give the OpenSSL applications more possibilities to make use of
3070 keys (public as well as private) handled by engines.
3073 *) Add OCSP code that comes from CertCo.
3076 *) Add VMS support for the Rijndael code.
3079 *) Added untested support for Nuron crypto accelerator.
3082 *) Add support for external cryptographic devices. This code was
3083 previously distributed separately as the "engine" branch.
3084 [Geoff Thorpe, Richard Levitte]
3086 *) Rework the filename-translation in the DSO code. It is now possible to
3087 have far greater control over how a "name" is turned into a filename
3088 depending on the operating environment and any oddities about the
3089 different shared library filenames on each system.
3092 *) Support threads on FreeBSD-elf in Configure.
3095 *) Fix for SHA1 assembly problem with MASM: it produces
3096 warnings about corrupt line number information when assembling
3097 with debugging information. This is caused by the overlapping
3099 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3102 NCONF_get_number() has no error checking at all. As a replacement,
3103 NCONF_get_number_e() is defined (_e for "error checking") and is
3104 promoted strongly. The old NCONF_get_number is kept around for
3105 binary backward compatibility.
3106 Make it possible for methods to load from something other than a BIO,
3107 by providing a function pointer that is given a name instead of a BIO.
3108 For example, this could be used to load configuration data from an
3112 *) Fix for non blocking accept BIOs. Added new I/O special reason
3113 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3114 with non blocking I/O was not possible because no retry code was
3115 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3119 *) Added the beginnings of Rijndael support.
3122 *) Fix for bug in DirectoryString mask setting. Add support for
3123 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3124 to allow certificate printing to more controllable, additional
3125 'certopt' option to 'x509' to allow new printing options to be
3129 *) Clean old EAY MD5 hack from e_os.h.
3132 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3134 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3135 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3136 [Joe Orton, Steve Henson]
3138 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3140 *) Fix additional bug revealed by the NISCC test suite:
3142 Stop bug triggering large recursion when presented with
3143 certain ASN.1 tags (CVE-2003-0851)
3146 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3148 *) Fix various bugs revealed by running the NISCC test suite:
3150 Stop out of bounds reads in the ASN1 code when presented with
3151 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3153 If verify callback ignores invalid public key errors don't try to check
3154 certificate signature with the NULL public key.
3158 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3159 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3163 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3164 extra data after the compression methods not only for TLS 1.0
3165 but also for SSL 3.0 (as required by the specification).
3166 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3168 *) Change X509_certificate_type() to mark the key as exported/exportable
3169 when it's 512 *bits* long, not 512 bytes.
3172 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3174 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3175 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3176 a protocol version number mismatch like a decryption error
3177 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3180 *) Turn on RSA blinding by default in the default implementation
3181 to avoid a timing attack. Applications that don't want it can call
3182 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3183 They would be ill-advised to do so in most cases.
3184 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3186 *) Change RSA blinding code so that it works when the PRNG is not
3187 seeded (in this case, the secret RSA exponent is abused as
3188 an unpredictable seed -- if it is not unpredictable, there
3189 is no point in blinding anyway). Make RSA blinding thread-safe
3190 by remembering the creator's thread ID in rsa->blinding and
3191 having all other threads use local one-time blinding factors
3192 (this requires more computation than sharing rsa->blinding, but
3193 avoids excessive locking; and if an RSA object is not shared
3194 between threads, blinding will still be very fast).
3197 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3199 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3200 via timing by performing a MAC computation even if incorrrect
3201 block cipher padding has been found. This is a countermeasure
3202 against active attacks where the attacker has to distinguish
3203 between bad padding and a MAC verification error. (CVE-2003-0078)
3205 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3206 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3207 Martin Vuagnoux (EPFL, Ilion)]
3209 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3211 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3212 memory from it's contents. This is done with a counter that will
3213 place alternating values in each byte. This can be used to solve
3214 two issues: 1) the removal of calls to memset() by highly optimizing
3215 compilers, and 2) cleansing with other values than 0, since those can
3216 be read through on certain media, for example a swap space on disk.
3219 *) Bugfix: client side session caching did not work with external caching,
3220 because the session->cipher setting was not restored when reloading
3221 from the external cache. This problem was masked, when
3222 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3223 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3226 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3227 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3228 [Zeev Lieber <zeev-l@yahoo.com>]
3230 *) Undo an undocumented change introduced in 0.9.6e which caused
3231 repeated calls to OpenSSL_add_all_ciphers() and
3232 OpenSSL_add_all_digests() to be ignored, even after calling
3236 *) Change the default configuration reader to deal with last line not
3237 being properly terminated.
3240 *) Change X509_NAME_cmp() so it applies the special rules on handling
3241 DN values that are of type PrintableString, as well as RDNs of type
3242 emailAddress where the value has the type ia5String.
3243 [stefank@valicert.com via Richard Levitte]
3245 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3246 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3247 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3248 the bitwise-OR of the two for use by the majority of applications
3249 wanting this behaviour, and update the docs. The documented
3250 behaviour and actual behaviour were inconsistent and had been
3251 changing anyway, so this is more a bug-fix than a behavioural
3253 [Geoff Thorpe, diagnosed by Nadav Har'El]
3255 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3256 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3259 *) Fix initialization code race conditions in
3260 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3261 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3262 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3263 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3264 ssl2_get_cipher_by_char(),
3265 ssl3_get_cipher_by_char().
3266 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3268 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3269 the cached sessions are flushed, as the remove_cb() might use ex_data
3270 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3271 (see [openssl.org #212]).
3272 [Geoff Thorpe, Lutz Jaenicke]
3274 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3275 length, instead of the encoding length to d2i_ASN1_OBJECT.
3278 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3280 *) [In 0.9.6g-engine release:]
3281 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3282 [Lynn Gazis <lgazis@rainbow.com>]
3284 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3286 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3287 and get fix the header length calculation.
3288 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3289 Alon Kantor <alonk@checkpoint.com> (and others),
3292 *) Use proper error handling instead of 'assertions' in buffer
3293 overflow checks added in 0.9.6e. This prevents DoS (the
3294 assertions could call abort()).
3295 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3297 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3299 *) Add various sanity checks to asn1_get_length() to reject
3300 the ASN1 length bytes if they exceed sizeof(long), will appear
3301 negative or the content length exceeds the length of the
3303 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3305 *) Fix cipher selection routines: ciphers without encryption had no flags
3306 for the cipher strength set and where therefore not handled correctly
3307 by the selection routines (PR #130).
3310 *) Fix EVP_dsa_sha macro.
3314 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3315 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3316 that was added in OpenSSL 0.9.6d.
3318 As the countermeasure turned out to be incompatible with some
3319 broken SSL implementations, the new option is part of SSL_OP_ALL.
3320 SSL_OP_ALL is usually employed when compatibility with weird SSL
3321 implementations is desired (e.g. '-bugs' option to 's_client' and
3322 's_server'), so the new option is automatically set in many
3326 *) Changes in security patch:
3328 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3329 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3330 Air Force Materiel Command, USAF, under agreement number
3333 *) Add various sanity checks to asn1_get_length() to reject
3334 the ASN1 length bytes if they exceed sizeof(long), will appear
3335 negative or the content length exceeds the length of the
3336 supplied buffer. (CVE-2002-0659)
3337 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3339 *) Assertions for various potential buffer overflows, not known to
3341 [Ben Laurie (CHATS)]
3343 *) Various temporary buffers to hold ASCII versions of integers were
3344 too small for 64 bit platforms. (CVE-2002-0655)
3345 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3347 *) Remote buffer overflow in SSL3 protocol - an attacker could
3348 supply an oversized session ID to a client. (CVE-2002-0656)
3349 [Ben Laurie (CHATS)]
3351 *) Remote buffer overflow in SSL2 protocol - an attacker could
3352 supply an oversized client master key. (CVE-2002-0656)
3353 [Ben Laurie (CHATS)]
3355 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3357 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3358 encoded as NULL) with id-dsa-with-sha1.
3359 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3361 *) Check various X509_...() return values in apps/req.c.
3362 [Nils Larsch <nla@trustcenter.de>]
3364 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3365 an end-of-file condition would erronously be flagged, when the CRLF
3366 was just at the end of a processed block. The bug was discovered when
3367 processing data through a buffering memory BIO handing the data to a
3368 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3369 <ptsekov@syntrex.com> and Nedelcho Stanev.
3372 *) Implement a countermeasure against a vulnerability recently found
3373 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3374 before application data chunks to avoid the use of known IVs
3375 with data potentially chosen by the attacker.
3378 *) Fix length checks in ssl3_get_client_hello().
3381 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3382 to prevent ssl3_read_internal() from incorrectly assuming that
3383 ssl3_read_bytes() found application data while handshake
3384 processing was enabled when in fact s->s3->in_read_app_data was
3385 merely automatically cleared during the initial handshake.
3386 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3388 *) Fix object definitions for Private and Enterprise: they were not
3389 recognized in their shortname (=lowercase) representation. Extend
3390 obj_dat.pl to issue an error when using undefined keywords instead
3391 of silently ignoring the problem (Svenning Sorensen
3392 <sss@sss.dnsalias.net>).
3395 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3396 generators, i.e. generators other than 2 and 5. (Previously, the
3397 code did not properly initialise the 'add' and 'rem' values to
3398 BN_generate_prime().)
3400 In the new general case, we do not insist that 'generator' is
3401 actually a primitive root: This requirement is rather pointless;
3402 a generator of the order-q subgroup is just as good, if not
3406 *) Map new X509 verification errors to alerts. Discovered and submitted by
3407 Tom Wu <tom@arcot.com>.
3410 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3411 returning non-zero before the data has been completely received
3412 when using non-blocking I/O.
3413 [Bodo Moeller; problem pointed out by John Hughes]
3415 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3416 [Ben Laurie, Lutz Jaenicke]
3418 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3419 Yoram Zahavi <YoramZ@gilian.com>).
3422 *) Add information about CygWin 1.3 and on, and preserve proper
3423 configuration for the versions before that.
3424 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3426 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3427 check whether we deal with a copy of a session and do not delete from
3428 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3429 <izhar@checkpoint.com>.
3432 *) Do not store session data into the internal session cache, if it
3433 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3434 flag is set). Proposed by Aslam <aslam@funk.com>.
3437 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3441 *) [In 0.9.6d-engine release:]
3442 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3443 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3445 *) Add the configuration target linux-s390x.
3446 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3448 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3449 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3450 variable as an indication that a ClientHello message has been
3451 received. As the flag value will be lost between multiple
3452 invocations of ssl3_accept when using non-blocking I/O, the
3453 function may not be aware that a handshake has actually taken
3454 place, thus preventing a new session from being added to the
3457 To avoid this problem, we now set s->new_session to 2 instead of
3458 using a local variable.
3459 [Lutz Jaenicke, Bodo Moeller]
3461 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3462 if the SSL_R_LENGTH_MISMATCH error is detected.
3463 [Geoff Thorpe, Bodo Moeller]
3465 *) New 'shared_ldflag' column in Configure platform table.
3468 *) Fix EVP_CIPHER_mode macro.
3469 ["Dan S. Camper" <dan@bti.net>]
3471 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3472 type, we must throw them away by setting rr->length to 0.
3473 [D P Chang <dpc@qualys.com>]
3475 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3477 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3478 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3479 worked incorrectly for those cases where range = 10..._2 and
3480 3*range is two bits longer than range.)
3483 *) Only add signing time to PKCS7 structures if it is not already
3487 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3488 OBJ_ld_ce should be OBJ_id_ce.
3489 Also some ip-pda OIDs in crypto/objects/objects.txt were
3490 incorrect (cf. RFC 3039).
3491 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3493 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3494 returns early because it has nothing to do.
3495 [Andy Schneider <andy.schneider@bjss.co.uk>]
3497 *) [In 0.9.6c-engine release:]
3498 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3499 [Andy Schneider <andy.schneider@bjss.co.uk>]
3501 *) [In 0.9.6c-engine release:]
3502 Add support for Cryptographic Appliance's keyserver technology.
3503 (Use engine 'keyclient')
3504 [Cryptographic Appliances and Geoff Thorpe]
3506 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3507 is called via tools/c89.sh because arguments have to be
3508 rearranged (all '-L' options must appear before the first object
3510 [Richard Shapiro <rshapiro@abinitio.com>]
3512 *) [In 0.9.6c-engine release:]
3513 Add support for Broadcom crypto accelerator cards, backported
3515 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3517 *) [In 0.9.6c-engine release:]
3518 Add support for SureWare crypto accelerator cards from
3519 Baltimore Technologies. (Use engine 'sureware')
3520 [Baltimore Technologies and Mark Cox]
3522 *) [In 0.9.6c-engine release:]
3523 Add support for crypto accelerator cards from Accelerated
3524 Encryption Processing, www.aep.ie. (Use engine 'aep')
3525 [AEP Inc. and Mark Cox]
3527 *) Add a configuration entry for gcc on UnixWare.
3528 [Gary Benson <gbenson@redhat.com>]
3530 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3531 messages are stored in a single piece (fixed-length part and
3532 variable-length part combined) and fix various bugs found on the way.
3535 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3536 instead. BIO_gethostbyname() does not know what timeouts are
3537 appropriate, so entries would stay in cache even when they have
3539 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3541 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3542 faced with a pathologically small ClientHello fragment that does
3543 not contain client_version: Instead of aborting with an error,
3544 simply choose the highest available protocol version (i.e.,
3545 TLS 1.0 unless it is disabled). In practice, ClientHello
3546 messages are never sent like this, but this change gives us
3547 strictly correct behaviour at least for TLS.
3550 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3551 never resets s->method to s->ctx->method when called from within
3552 one of the SSL handshake functions.
3553 [Bodo Moeller; problem pointed out by Niko Baric]
3555 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3556 (sent using the client's version number) if client_version is
3557 smaller than the protocol version in use. Also change
3558 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3559 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3560 the client will at least see that alert.
3563 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3567 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3568 client receives HelloRequest while in a handshake.
3569 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3571 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3572 should end in 'break', not 'goto end' which circuments various
3573 cleanups done in state SSL_ST_OK. But session related stuff
3574 must be disabled for SSL_ST_OK in the case that we just sent a
3577 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3578 before just sending a HelloRequest.
3579 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3581 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3582 reveal whether illegal block cipher padding was found or a MAC
3583 verification error occured. (Neither SSLerr() codes nor alerts
3584 are directly visible to potential attackers, but the information
3585 may leak via logfiles.)
3587 Similar changes are not required for the SSL 2.0 implementation
3588 because the number of padding bytes is sent in clear for SSL 2.0,
3589 and the extra bytes are just ignored. However ssl/s2_pkt.c
3590 failed to verify that the purported number of padding bytes is in
3594 *) Add OpenUNIX-8 support including shared libraries
3595 (Boyd Lynn Gerber <gerberb@zenez.com>).
3598 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3599 'wristwatch attack' using huge encoding parameters (cf.
3600 James H. Manger's CRYPTO 2001 paper). Note that the
3601 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3602 encoding parameters and hence was not vulnerable.
3605 *) BN_sqr() bug fix.
3606 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3608 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3609 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3610 followed by modular reduction.
3611 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3613 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3614 equivalent based on BN_pseudo_rand() instead of BN_rand().
3617 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3618 This function was broken, as the check for a new client hello message
3619 to handle SGC did not allow these large messages.
3620 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3623 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3626 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3627 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3630 *) Rework the configuration and shared library support for Tru64 Unix.
3631 The configuration part makes use of modern compiler features and
3632 still retains old compiler behavior for those that run older versions
3633 of the OS. The shared library support part includes a variant that
3634 uses the RPATH feature, and is available through the special
3635 configuration target "alpha-cc-rpath", which will never be selected
3637 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3639 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3640 with the same message size as in ssl3_get_certificate_request().
3641 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3642 messages might inadvertently be reject as too long.
3643 [Petr Lampa <lampa@fee.vutbr.cz>]
3645 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3648 *) Modified SSL library such that the verify_callback that has been set
3649 specificly for an SSL object with SSL_set_verify() is actually being
3650 used. Before the change, a verify_callback set with this function was
3651 ignored and the verify_callback() set in the SSL_CTX at the time of
3652 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3653 to allow the necessary settings.
3656 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3657 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3658 done automatically (in contradiction to the requirements of the C
3659 standard). This made problems when used from OpenSSH.
3662 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3663 dh->length and always used
3665 BN_rand_range(priv_key, dh->p).
3667 BN_rand_range() is not necessary for Diffie-Hellman, and this
3668 specific range makes Diffie-Hellman unnecessarily inefficient if
3669 dh->length (recommended exponent length) is much smaller than the
3670 length of dh->p. We could use BN_rand_range() if the order of
3671 the subgroup was stored in the DH structure, but we only have
3676 BN_rand(priv_key, l, ...)
3678 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3684 RSA_eay_public_encrypt
3685 RSA_eay_private_decrypt
3686 RSA_eay_private_encrypt (signing)
3687 RSA_eay_public_decrypt (signature verification)
3689 (default implementations for RSA_public_encrypt,
3690 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3691 always reject numbers >= n.
3694 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3695 to synchronize access to 'locking_thread'. This is necessary on
3696 systems where access to 'locking_thread' (an 'unsigned long'
3697 variable) is not atomic.
3700 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3701 *before* setting the 'crypto_lock_rand' flag. The previous code had
3702 a race condition if 0 is a valid thread ID.
3703 [Travis Vitek <vitek@roguewave.com>]
3705 *) Add support for shared libraries under Irix.
3706 [Albert Chin-A-Young <china@thewrittenword.com>]
3708 *) Add configuration option to build on Linux on both big-endian and
3710 [Ralf Baechle <ralf@uni-koblenz.de>]
3712 *) Add the possibility to create shared libraries on HP-UX.
3715 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3717 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3718 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3719 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3720 PRNG state recovery was possible based on the output of
3721 one PRNG request appropriately sized to gain knowledge on
3722 'md' followed by enough consecutive 1-byte PRNG requests
3723 to traverse all of 'state'.
3725 1. When updating 'md_local' (the current thread's copy of 'md')
3726 during PRNG output generation, hash all of the previous
3727 'md_local' value, not just the half used for PRNG output.
3729 2. Make the number of bytes from 'state' included into the hash
3730 independent from the number of PRNG bytes requested.
3732 The first measure alone would be sufficient to avoid
3733 Markku-Juhani's attack. (Actually it had never occurred
3734 to me that the half of 'md_local' used for chaining was the
3735 half from which PRNG output bytes were taken -- I had always
3736 assumed that the secret half would be used.) The second
3737 measure makes sure that additional data from 'state' is never
3738 mixed into 'md_local' in small portions; this heuristically
3739 further strengthens the PRNG.
3742 *) Fix crypto/bn/asm/mips3.s.
3745 *) When only the key is given to "enc", the IV is undefined. Print out
3746 an error message in this case.
3749 *) Handle special case when X509_NAME is empty in X509 printing routines.
3752 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3753 positive and less than q.
3756 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3757 used: it isn't thread safe and the add_lock_callback should handle
3759 [Paul Rose <Paul.Rose@bridge.com>]
3761 *) Verify that incoming data obeys the block size in
3762 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3766 [Ulf Möller, Bodo Möller]
3768 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3769 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3770 when fixing the server behaviour for backwards-compatible 'client
3771 hello' messages. (Note that the attack is impractical against
3772 SSL 3.0 and TLS 1.0 anyway because length and version checking
3773 means that the probability of guessing a valid ciphertext is
3774 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3777 Before 0.9.5, the countermeasure (hide the error by generating a
3778 random 'decryption result') did not work properly because
3779 ERR_clear_error() was missing, meaning that SSL_get_error() would
3780 detect the supposedly ignored error.
3782 Both problems are now fixed.
3785 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3786 (previously it was 1024).
3789 *) Fix for compatibility mode trust settings: ignore trust settings
3790 unless some valid trust or reject settings are present.
3793 *) Fix for blowfish EVP: its a variable length cipher.
3796 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3797 parameters in DSA public key structures and return an error in the
3798 DSA routines if parameters are absent.
3801 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3802 in the current directory if neither $RANDFILE nor $HOME was set.
3803 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3804 caused some confusion to Windows users who haven't defined $HOME.
3805 Thus RAND_file_name() is changed again: e_os.h can define a
3806 DEFAULT_HOME, which will be used if $HOME is not set.
3807 For Windows, we use "C:"; on other platforms, we still require
3808 environment variables.
3810 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3811 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3812 having multiple threads call RAND_poll() concurrently.
3815 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3816 combination of a flag and a thread ID variable.
3817 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3818 flag), *other* threads can enter ssleay_add_bytes without obeying
3819 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3820 that they do not hold after the first thread unsets add_do_not_lock).
3823 *) Change bctest again: '-x' expressions are not available in all
3827 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3829 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3830 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3832 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3833 the default extension for executables, if any. Also, make the perl
3834 scripts that use symlink() to test if it really exists and use "cp"
3835 if it doesn't. All this made OpenSSL compilable and installable in
3839 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3840 If SEQUENCE is length is indefinite just set c->slen to the total
3841 amount of data available.
3842 [Steve Henson, reported by shige@FreeBSD.org]
3843 [This change does not apply to 0.9.7.]
3845 *) Change bctest to avoid here-documents inside command substitution
3846 (workaround for FreeBSD /bin/sh bug).
3847 For compatibility with Ultrix, avoid shell functions (introduced
3848 in the bctest version that searches along $PATH).
3851 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3852 with des_encrypt() defined on some operating systems, like Solaris
3856 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3857 On the Importance of Eliminating Errors in Cryptographic
3858 Computations, J. Cryptology 14 (2001) 2, 101-119,
3859 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3862 *) MIPS assembler BIGNUM division bug fix.
3865 *) Disabled incorrect Alpha assembler code.
3868 *) Fix PKCS#7 decode routines so they correctly update the length
3869 after reading an EOC for the EXPLICIT tag.
3871 [This change does not apply to 0.9.7.]
3873 *) Fix bug in PKCS#12 key generation routines. This was triggered
3874 if a 3DES key was generated with a 0 initial byte. Include
3875 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3876 (but broken) behaviour.
3879 *) Enhance bctest to search for a working bc along $PATH and print
3881 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3883 *) Fix memory leaks in err.c: free err_data string if necessary;
3884 don't write to the wrong index in ERR_set_error_data.
3887 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3891 *) Replace rdtsc with _emit statements for VC++ version 5.
3892 [Jeremy Cooper <jeremy@baymoo.org>]
3894 *) Make it possible to reuse SSLv2 sessions.
3897 *) In copy_email() check for >= 0 as a return value for
3898 X509_NAME_get_index_by_NID() since 0 is a valid index.
3899 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3901 *) Avoid coredump with unsupported or invalid public keys by checking if
3902 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3903 PKCS7_verify() fails with non detached data.
3906 *) Don't use getenv in library functions when run as setuid/setgid.
3907 New function OPENSSL_issetugid().
3910 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3911 due to incorrect handling of multi-threading:
3913 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3915 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3917 3. Count how many times MemCheck_off() has been called so that
3918 nested use can be treated correctly. This also avoids
3919 inband-signalling in the previous code (which relied on the
3920 assumption that thread ID 0 is impossible).
3923 *) Add "-rand" option also to s_client and s_server.
3926 *) Fix CPU detection on Irix 6.x.
3927 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3928 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3930 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3933 [This change does not apply to 0.9.7.]
3935 *) Use the cached encoding of an X509_NAME structure rather than
3936 copying it. This is apparently the reason for the libsafe "errors"
3937 but the code is actually correct.
3940 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3941 Bleichenbacher's DSA attack.
3942 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3943 to be set and top=0 forces the highest bit to be set; top=-1 is new
3944 and leaves the highest bit random.
3945 [Ulf Moeller, Bodo Moeller]
3947 *) In the NCONF_...-based implementations for CONF_... queries
3948 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3949 a temporary CONF structure with the data component set to NULL
3950 (which gives segmentation faults in lh_retrieve).
3951 Instead, use NULL for the CONF pointer in CONF_get_string and
3952 CONF_get_number (which may use environment variables) and directly
3953 return NULL from CONF_get_section.
3956 *) Fix potential buffer overrun for EBCDIC.
3959 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3960 keyUsage if basicConstraints absent for a CA.
3963 *) Make SMIME_write_PKCS7() write mail header values with a format that
3964 is more generally accepted (no spaces before the semicolon), since
3965 some programs can't parse those values properly otherwise. Also make
3966 sure BIO's that break lines after each write do not create invalid
3970 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3971 macros previously used would not encode an empty SEQUENCE OF
3972 and break the signature.
3974 [This change does not apply to 0.9.7.]
3976 *) Zero the premaster secret after deriving the master secret in
3980 *) Add some EVP_add_digest_alias registrations (as found in
3981 OpenSSL_add_all_digests()) to SSL_library_init()
3982 aka OpenSSL_add_ssl_algorithms(). This provides improved
3983 compatibility with peers using X.509 certificates
3984 with unconventional AlgorithmIdentifier OIDs.
3987 *) Fix for Irix with NO_ASM.
3988 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3990 *) ./config script fixes.
3991 [Ulf Moeller, Richard Levitte]
3993 *) Fix 'openssl passwd -1'.
3996 *) Change PKCS12_key_gen_asc() so it can cope with non null
3997 terminated strings whose length is passed in the passlen
3998 parameter, for example from PEM callbacks. This was done
3999 by adding an extra length parameter to asc2uni().
4000 [Steve Henson, reported by <oddissey@samsung.co.kr>]
4002 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
4003 call failed, free the DSA structure.
4006 *) Fix to uni2asc() to cope with zero length Unicode strings.
4007 These are present in some PKCS#12 files.
4010 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
4011 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
4012 when writing a 32767 byte record.
4013 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
4015 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
4016 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
4018 (RSA objects have a reference count access to which is protected
4019 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
4020 so they are meant to be shared between threads.)
4021 [Bodo Moeller, Geoff Thorpe; original patch submitted by
4022 "Reddie, Steven" <Steven.Reddie@ca.com>]
4024 *) Fix a deadlock in CRYPTO_mem_leaks().
4027 *) Use better test patterns in bntest.
4030 *) rand_win.c fix for Borland C.
4033 *) BN_rshift bugfix for n == 0.
4036 *) Add a 'bctest' script that checks for some known 'bc' bugs
4037 so that 'make test' does not abort just because 'bc' is broken.
4040 *) Store verify_result within SSL_SESSION also for client side to
4041 avoid potential security hole. (Re-used sessions on the client side
4042 always resulted in verify_result==X509_V_OK, not using the original
4043 result of the server certificate verification.)
4046 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
4047 SSL3_RT_APPLICATION_DATA, return 0.
4048 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
4052 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
4053 releases, have been re-implemented by renaming the previous
4054 implementations of ssl2_read and ssl3_read to ssl2_read_internal
4055 and ssl3_read_internal, respectively, and adding 'peek' parameters
4056 to them. The new ssl[23]_{read,peek} functions are calls to
4057 ssl[23]_read_internal with the 'peek' flag set appropriately.
4058 A 'peek' parameter has also been added to ssl3_read_bytes, which
4059 does the actual work for ssl3_read_internal.
4062 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
4063 the method-specific "init()" handler. Also clean up ex_data after
4064 calling the method-specific "finish()" handler. Previously, this was
4065 happening the other way round.
4068 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
4069 The previous value, 12, was not always sufficient for BN_mod_exp().
4072 *) Make sure that shared libraries get the internal name engine with
4073 the full version number and not just 0. This should mark the
4074 shared libraries as not backward compatible. Of course, this should
4075 be changed again when we can guarantee backward binary compatibility.
4078 *) Fix typo in get_cert_by_subject() in by_dir.c
4079 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
4081 *) Rework the system to generate shared libraries:
4083 - Make note of the expected extension for the shared libraries and
4084 if there is a need for symbolic links from for example libcrypto.so.0
4085 to libcrypto.so.0.9.7. There is extended info in Configure for
4088 - Make as few rebuilds of the shared libraries as possible.
4090 - Still avoid linking the OpenSSL programs with the shared libraries.
4092 - When installing, install the shared libraries separately from the
4096 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
4098 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
4099 and not in SSL_clear because the latter is also used by the
4100 accept/connect functions; previously, the settings made by
4101 SSL_set_read_ahead would be lost during the handshake.
4102 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
4104 *) Correct util/mkdef.pl to be selective about disabled algorithms.
4105 Previously, it would create entries for disableed algorithms no
4109 *) Added several new manual pages for SSL_* function.
4112 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
4114 *) In ssl23_get_client_hello, generate an error message when faced
4115 with an initial SSL 3.0/TLS record that is too small to contain the
4116 first two bytes of the ClientHello message, i.e. client_version.
4117 (Note that this is a pathologic case that probably has never happened
4118 in real life.) The previous approach was to use the version number
4119 from the record header as a substitute; but our protocol choice
4120 should not depend on that one because it is not authenticated
4121 by the Finished messages.
4124 *) More robust randomness gathering functions for Windows.
4125 [Jeffrey Altman <jaltman@columbia.edu>]
4127 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
4128 not set then we don't setup the error code for issuer check errors
4129 to avoid possibly overwriting other errors which the callback does
4130 handle. If an application does set the flag then we assume it knows
4131 what it is doing and can handle the new informational codes
4135 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
4136 a general "ANY" type, as such it should be able to decode anything
4137 including tagged types. However it didn't check the class so it would
4138 wrongly interpret tagged types in the same way as their universal
4139 counterpart and unknown types were just rejected. Changed so that the
4140 tagged and unknown types are handled in the same way as a SEQUENCE:
4141 that is the encoding is stored intact. There is also a new type
4142 "V_ASN1_OTHER" which is used when the class is not universal, in this
4143 case we have no idea what the actual type is so we just lump them all
4147 *) On VMS, stdout may very well lead to a file that is written to
4148 in a record-oriented fashion. That means that every write() will
4149 write a separate record, which will be read separately by the
4150 programs trying to read from it. This can be very confusing.
4152 The solution is to put a BIO filter in the way that will buffer
4153 text until a linefeed is reached, and then write everything a
4154 line at a time, so every record written will be an actual line,
4155 not chunks of lines and not (usually doesn't happen, but I've
4156 seen it once) several lines in one record. BIO_f_linebuffer() is
4159 Currently, it's a VMS-only method, because that's where it has
4160 been tested well enough.
4163 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
4164 it can return incorrect results.
4165 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
4166 but it was in 0.9.6-beta[12].)
4169 *) Disable the check for content being present when verifying detached
4170 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
4171 include zero length content when signing messages.
4174 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
4175 BIO_ctrl (for BIO pairs).
4178 *) Add DSO method for VMS.
4181 *) Bug fix: Montgomery multiplication could produce results with the
4185 *) Add RPM specification openssl.spec and modify it to build three
4186 packages. The default package contains applications, application
4187 documentation and run-time libraries. The devel package contains
4188 include files, static libraries and function documentation. The
4189 doc package contains the contents of the doc directory. The original
4190 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
4193 *) Add a large number of documentation files for many SSL routines.
4194 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
4196 *) Add a configuration entry for Sony News 4.
4197 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
4199 *) Don't set the two most significant bits to one when generating a
4200 random number < q in the DSA library.
4203 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
4204 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
4205 the underlying transport is blocking) if a handshake took place.
4206 (The default behaviour is needed by applications such as s_client
4207 and s_server that use select() to determine when to use SSL_read;
4208 but for applications that know in advance when to expect data, it
4209 just makes things more complicated.)
4212 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
4216 *) Add a few more EBCDIC conditionals that make `req' and `x509'
4217 work better on such systems.
4218 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
4220 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
4221 Update PKCS12_parse() so it copies the friendlyName and the
4222 keyid to the certificates aux info.
4225 *) Fix bug in PKCS7_verify() which caused an infinite loop
4226 if there was more than one signature.
4227 [Sven Uszpelkat <su@celocom.de>]
4229 *) Major change in util/mkdef.pl to include extra information
4230 about each symbol, as well as presentig variables as well
4231 as functions. This change means that there's n more need
4232 to rebuild the .num files when some algorithms are excluded.
4235 *) Allow the verify time to be set by an application,
4236 rather than always using the current time.
4239 *) Phase 2 verify code reorganisation. The certificate
4240 verify code now looks up an issuer certificate by a
4241 number of criteria: subject name, authority key id
4242 and key usage. It also verifies self signed certificates
4243 by the same criteria. The main comparison function is
4244 X509_check_issued() which performs these checks.
4246 Lot of changes were necessary in order to support this
4247 without completely rewriting the lookup code.
4249 Authority and subject key identifier are now cached.
4251 The LHASH 'certs' is X509_STORE has now been replaced
4252 by a STACK_OF(X509_OBJECT). This is mainly because an
4253 LHASH can't store or retrieve multiple objects with
4254 the same hash value.
4256 As a result various functions (which were all internal
4257 use only) have changed to handle the new X509_STORE
4258 structure. This will break anything that messed round
4259 with X509_STORE internally.
4261 The functions X509_STORE_add_cert() now checks for an
4262 exact match, rather than just subject name.
4264 The X509_STORE API doesn't directly support the retrieval
4265 of multiple certificates matching a given criteria, however
4266 this can be worked round by performing a lookup first
4267 (which will fill the cache with candidate certificates)
4268 and then examining the cache for matches. This is probably
4269 the best we can do without throwing out X509_LOOKUP
4270 entirely (maybe later...).
4272 The X509_VERIFY_CTX structure has been enhanced considerably.
4274 All certificate lookup operations now go via a get_issuer()
4275 callback. Although this currently uses an X509_STORE it
4276 can be replaced by custom lookups. This is a simple way
4277 to bypass the X509_STORE hackery necessary to make this
4278 work and makes it possible to use more efficient techniques
4279 in future. A very simple version which uses a simple
4280 STACK for its trusted certificate store is also provided
4281 using X509_STORE_CTX_trusted_stack().
4283 The verify_cb() and verify() callbacks now have equivalents
4284 in the X509_STORE_CTX structure.
4286 X509_STORE_CTX also has a 'flags' field which can be used
4287 to customise the verify behaviour.
4290 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
4291 excludes S/MIME capabilities.
4294 *) When a certificate request is read in keep a copy of the
4295 original encoding of the signed data and use it when outputing
4296 again. Signatures then use the original encoding rather than
4297 a decoded, encoded version which may cause problems if the
4298 request is improperly encoded.
4301 *) For consistency with other BIO_puts implementations, call
4302 buffer_write(b, ...) directly in buffer_puts instead of calling
4305 In BIO_puts, increment b->num_write as in BIO_write.
4306 [Peter.Sylvester@EdelWeb.fr]
4308 *) Fix BN_mul_word for the case where the word is 0. (We have to use
4309 BN_zero, we may not return a BIGNUM with an array consisting of
4313 *) Avoid calling abort() from within the library when problems are
4314 detected, except if preprocessor symbols have been defined
4315 (such as REF_CHECK, BN_DEBUG etc.).
4318 *) New openssl application 'rsautl'. This utility can be
4319 used for low level RSA operations. DER public key
4320 BIO/fp routines also added.
4323 *) New Configure entry and patches for compiling on QNX 4.
4324 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
4326 *) A demo state-machine implementation was sponsored by
4327 Nuron (http://www.nuron.com/) and is now available in
4328 demos/state_machine.
4331 *) New options added to the 'dgst' utility for signature
4332 generation and verification.
4335 *) Unrecognized PKCS#7 content types are now handled via a
4336 catch all ASN1_TYPE structure. This allows unsupported
4337 types to be stored as a "blob" and an application can
4338 encode and decode it manually.
4341 *) Fix various signed/unsigned issues to make a_strex.c
4343 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
4345 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
4346 length if passed a buffer. ASN1_INTEGER_to_BN failed
4347 if passed a NULL BN and its argument was negative.
4348 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
4350 *) Modification to PKCS#7 encoding routines to output definite
4351 length encoding. Since currently the whole structures are in
4352 memory there's not real point in using indefinite length
4353 constructed encoding. However if OpenSSL is compiled with
4354 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
4357 *) Added BIO_vprintf() and BIO_vsnprintf().
4360 *) Added more prefixes to parse for in the the strings written
4361 through a logging bio, to cover all the levels that are available
4362 through syslog. The prefixes are now:
4364 PANIC, EMERG, EMR => LOG_EMERG
4365 ALERT, ALR => LOG_ALERT
4366 CRIT, CRI => LOG_CRIT
4367 ERROR, ERR => LOG_ERR
4368 WARNING, WARN, WAR => LOG_WARNING
4369 NOTICE, NOTE, NOT => LOG_NOTICE
4370 INFO, INF => LOG_INFO
4371 DEBUG, DBG => LOG_DEBUG
4373 and as before, if none of those prefixes are present at the
4374 beginning of the string, LOG_ERR is chosen.
4376 On Win32, the LOG_* levels are mapped according to this:
4378 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
4379 LOG_WARNING => EVENTLOG_WARNING_TYPE
projects / openssl.git / blob