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 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
57 Hopefully, we will not see any false combination of paths any more.
60 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
62 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
63 (part of SSL_OP_ALL). This option used to disable the
64 countermeasure against man-in-the-middle protocol-version
65 rollback in the SSL 2.0 server implementation, which is a bad
68 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
69 for Information Security, National Institute of Advanced Industrial
70 Science and Technology [AIST], Japan)]
72 *) Add two function to clear and return the verify parameter flags.
75 *) Keep cipherlists sorted in the source instead of sorting them at
76 runtime, thus removing the need for a lock.
79 *) Avoid some small subgroup attacks in Diffie-Hellman.
80 [Nick Mathewson and Ben Laurie]
82 *) Add functions for well-known primes.
85 *) Extended Windows CE support.
86 [Satoshi Nakamura and Andy Polyakov]
88 *) Initialize SSL_METHOD structures at compile time instead of during
89 runtime, thus removing the need for a lock.
92 *) Make PKCS7_decrypt() work even if no certificate is supplied by
93 attempting to decrypt each encrypted key in turn. Add support to
97 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
99 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
102 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
103 key into the same file any more.
106 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
109 *) Add -utf8 command line and config file option to 'ca'.
110 [Stefan <stf@udoma.org]
112 *) Removed the macro des_crypt(), as it seems to conflict with some
113 libraries. Use DES_crypt().
116 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
117 involves renaming the source and generated shared-libs for
118 both. The engines will accept the corrected or legacy ids
119 ('ncipher' and '4758_cca' respectively) when binding. NB,
120 this only applies when building 'shared'.
121 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
123 *) Add attribute functions to EVP_PKEY structure. Modify
124 PKCS12_create() to recognize a CSP name attribute and
125 use it. Make -CSP option work again in pkcs12 utility.
128 *) Add new functionality to the bn blinding code:
129 - automatic re-creation of the BN_BLINDING parameters after
130 a fixed number of uses (currently 32)
131 - add new function for parameter creation
132 - introduce flags to control the update behaviour of the
133 BN_BLINDING parameters
134 - hide BN_BLINDING structure
135 Add a second BN_BLINDING slot to the RSA structure to improve
136 performance when a single RSA object is shared among several
140 *) Add support for DTLS.
141 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
143 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
144 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
147 *) Remove buggy and incompletet DH cert support from
148 ssl/ssl_rsa.c and ssl/s3_both.c
151 *) Use SHA-1 instead of MD5 as the default digest algorithm for
152 the apps/openssl applications.
155 *) Compile clean with "-Wall -Wmissing-prototypes
156 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
157 DEBUG_SAFESTACK must also be set.
160 *) Change ./Configure so that certain algorithms can be disabled by default.
161 The new counterpiece to "no-xxx" is "enable-xxx".
163 The patented RC5 and MDC2 algorithms will now be disabled unless
164 "enable-rc5" and "enable-mdc2", respectively, are specified.
166 (IDEA remains enabled despite being patented. This is because IDEA
167 is frequently required for interoperability, and there is no license
168 fee for non-commercial use. As before, "no-idea" can be used to
169 avoid this algorithm.)
173 *) Add processing of proxy certificates (see RFC 3820). This work was
174 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
175 EGEE (Enabling Grids for E-science in Europe).
178 *) RC4 performance overhaul on modern architectures/implementations, such
179 as Intel P4, IA-64 and AMD64.
182 *) New utility extract-section.pl. This can be used specify an alternative
183 section number in a pod file instead of having to treat each file as
184 a separate case in Makefile. This can be done by adding two lines to the
187 =for comment openssl_section:XXX
189 The blank line is mandatory.
193 *) New arguments -certform, -keyform and -pass for s_client and s_server
194 to allow alternative format key and certificate files and passphrase
198 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
199 update associated structures and add various utility functions.
201 Add new policy related verify parameters, include policy checking in
202 standard verify code. Enhance 'smime' application with extra parameters
203 to support policy checking and print out.
206 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
207 Nehemiah processors. These extensions support AES encryption in hardware
208 as well as RNG (though RNG support is currently disabled).
209 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
211 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
214 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
215 [Andy Polyakov and a number of other people]
217 *) Improved PowerPC platform support. Most notably BIGNUM assembler
218 implementation contributed by IBM.
219 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
221 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
222 exponent rather than 'unsigned long'. There is a corresponding change to
223 the new 'rsa_keygen' element of the RSA_METHOD structure.
224 [Jelte Jansen, Geoff Thorpe]
226 *) Functionality for creating the initial serial number file is now
227 moved from CA.pl to the 'ca' utility with a new option -create_serial.
229 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
230 number file to 1, which is bound to cause problems. To avoid
231 the problems while respecting compatibility between different 0.9.7
232 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
233 CA.pl for serial number initialization. With the new release 0.9.8,
234 we can fix the problem directly in the 'ca' utility.)
237 *) Reduced header interdepencies by declaring more opaque objects in
238 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
239 give fewer recursive includes, which could break lazy source code - so
240 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
241 developers should define this symbol when building and using openssl to
242 ensure they track the recommended behaviour, interfaces, [etc], but
243 backwards-compatible behaviour prevails when this isn't defined.
246 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
249 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
250 This will generate a random key of the appropriate length based on the
251 cipher context. The EVP_CIPHER can provide its own random key generation
252 routine to support keys of a specific form. This is used in the des and
253 3des routines to generate a key of the correct parity. Update S/MIME
254 code to use new functions and hence generate correct parity DES keys.
255 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
256 valid (weak or incorrect parity).
259 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
260 as looking them up. This is useful when the verified structure may contain
261 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
262 present unless the new PKCS7_NO_CRL flag is asserted.
265 *) Extend ASN1 oid configuration module. It now additionally accepts the
268 shortName = some long name, 1.2.3.4
271 *) Reimplemented the BN_CTX implementation. There is now no more static
272 limitation on the number of variables it can handle nor the depth of the
273 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
274 information can now expand as required, and rather than having a single
275 static array of bignums, BN_CTX now uses a linked-list of such arrays
276 allowing it to expand on demand whilst maintaining the usefulness of
280 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
281 to allow all RSA operations to function using a single BN_CTX.
284 *) Preliminary support for certificate policy evaluation and checking. This
285 is initially intended to pass the tests outlined in "Conformance Testing
286 of Relying Party Client Certificate Path Processing Logic" v1.07.
289 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
290 remained unused and not that useful. A variety of other little bignum
291 tweaks and fixes have also been made continuing on from the audit (see
295 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
296 associated ASN1, EVP and SSL functions and old ASN1 macros.
299 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
300 and this should never fail. So the return value from the use of
301 BN_set_word() (which can fail due to needless expansion) is now deprecated;
302 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
305 *) BN_CTX_get() should return zero-valued bignums, providing the same
306 initialised value as BN_new().
307 [Geoff Thorpe, suggested by Ulf Möller]
309 *) Support for inhibitAnyPolicy certificate extension.
312 *) An audit of the BIGNUM code is underway, for which debugging code is
313 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
314 is considered valid when processing BIGNUMs, and causes execution to
315 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
316 further steps are taken to deliberately pollute unused data in BIGNUM
317 structures to try and expose faulty code further on. For now, openssl will
318 (in its default mode of operation) continue to tolerate the inconsistent
319 forms that it has tolerated in the past, but authors and packagers should
320 consider trying openssl and their own applications when compiled with
321 these debugging symbols defined. It will help highlight potential bugs in
322 their own code, and will improve the test coverage for OpenSSL itself. At
323 some point, these tighter rules will become openssl's default to improve
324 maintainability, though the assert()s and other overheads will remain only
325 in debugging configurations. See bn.h for more details.
326 [Geoff Thorpe, Nils Larsch, Ulf Möller]
328 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
329 that can only be obtained through BN_CTX_new() (which implicitly
330 initialises it). The presence of this function only made it possible
331 to overwrite an existing structure (and cause memory leaks).
334 *) Because of the callback-based approach for implementing LHASH as a
335 template type, lh_insert() adds opaque objects to hash-tables and
336 lh_doall() or lh_doall_arg() are typically used with a destructor callback
337 to clean up those corresponding objects before destroying the hash table
338 (and losing the object pointers). So some over-zealous constifications in
339 LHASH have been relaxed so that lh_insert() does not take (nor store) the
340 objects as "const" and the lh_doall[_arg] callback wrappers are not
341 prototyped to have "const" restrictions on the object pointers they are
342 given (and so aren't required to cast them away any more).
345 *) The tmdiff.h API was so ugly and minimal that our own timing utility
346 (speed) prefers to use its own implementation. The two implementations
347 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
348 its object type properly exposed (MS_TM) instead of casting to/from "char
349 *". This may still change yet if someone realises MS_TM and "ms_time_***"
350 aren't necessarily the greatest nomenclatures - but this is what was used
351 internally to the implementation so I've used that for now.
354 *) Ensure that deprecated functions do not get compiled when
355 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
356 the self-tests were still using deprecated key-generation functions so
357 these have been updated also.
360 *) Reorganise PKCS#7 code to separate the digest location functionality
361 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
362 New function PKCS7_set_digest() to set the digest type for PKCS#7
363 digestedData type. Add additional code to correctly generate the
364 digestedData type and add support for this type in PKCS7 initialization
368 *) New function PKCS7_set0_type_other() this initializes a PKCS7
369 structure of type "other".
372 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
373 sure the loop does correctly stop and breaking ("division by zero")
374 modulus operations are not performed. The (pre-generated) prime
375 table crypto/bn/bn_prime.h was already correct, but it could not be
376 re-generated on some platforms because of the "division by zero"
377 situation in the script.
378 [Ralf S. Engelschall]
380 *) Update support for ECC-based TLS ciphersuites according to
381 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
382 SHA-1 now is only used for "small" curves (where the
383 representation of a field element takes up to 24 bytes); for
384 larger curves, the field element resulting from ECDH is directly
385 used as premaster secret.
386 [Douglas Stebila (Sun Microsystems Laboratories)]
388 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
389 curve secp160r1 to the tests.
390 [Douglas Stebila (Sun Microsystems Laboratories)]
392 *) Add the possibility to load symbols globally with DSO.
393 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
395 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
396 control of the error stack.
399 *) Add support for STORE in ENGINE.
402 *) Add the STORE type. The intention is to provide a common interface
403 to certificate and key stores, be they simple file-based stores, or
404 HSM-type store, or LDAP stores, or...
405 NOTE: The code is currently UNTESTED and isn't really used anywhere.
408 *) Add a generic structure called OPENSSL_ITEM. This can be used to
409 pass a list of arguments to any function as well as provide a way
410 for a function to pass data back to the caller.
413 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
414 works like BUF_strdup() but can be used to duplicate a portion of
415 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
419 *) Add the function sk_find_ex() which works like sk_find(), but will
420 return an index to an element even if an exact match couldn't be
421 found. The index is guaranteed to point at the element where the
422 searched-for key would be inserted to preserve sorting order.
425 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
426 takes an extra flags argument for optional functionality. Currently,
427 the following flags are defined:
429 OBJ_BSEARCH_VALUE_ON_NOMATCH
430 This one gets OBJ_bsearch_ex() to return a pointer to the first
431 element where the comparing function returns a negative or zero
434 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
435 This one gets OBJ_bsearch_ex() to return a pointer to the first
436 element where the comparing function returns zero. This is useful
437 if there are more than one element where the comparing function
441 *) Make it possible to create self-signed certificates with 'openssl ca'
442 in such a way that the self-signed certificate becomes part of the
443 CA database and uses the same mechanisms for serial number generation
444 as all other certificate signing. The new flag '-selfsign' enables
445 this functionality. Adapt CA.sh and CA.pl.in.
448 *) Add functionality to check the public key of a certificate request
449 against a given private. This is useful to check that a certificate
450 request can be signed by that key (self-signing).
453 *) Make it possible to have multiple active certificates with the same
454 subject in the CA index file. This is done only if the keyword
455 'unique_subject' is set to 'no' in the main CA section (default
456 if 'CA_default') of the configuration file. The value is saved
457 with the database itself in a separate index attribute file,
458 named like the index file with '.attr' appended to the name.
461 *) Generate muti valued AVAs using '+' notation in config files for
465 *) Support for nameConstraints certificate extension.
468 *) Support for policyConstraints certificate extension.
471 *) Support for policyMappings certificate extension.
474 *) Make sure the default DSA_METHOD implementation only uses its
475 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
476 and change its own handlers to be NULL so as to remove unnecessary
477 indirection. This lets alternative implementations fallback to the
478 default implementation more easily.
481 *) Support for directoryName in GeneralName related extensions
485 *) Make it possible to link applications using Makefile.shared.
486 Make that possible even when linking against static libraries!
489 *) Support for single pass processing for S/MIME signing. This now
490 means that S/MIME signing can be done from a pipe, in addition
491 cleartext signing (multipart/signed type) is effectively streaming
492 and the signed data does not need to be all held in memory.
494 This is done with a new flag PKCS7_STREAM. When this flag is set
495 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
496 is done after the data is output (and digests calculated) in
500 *) Add full support for -rpath/-R, both in shared libraries and
501 applications, at least on the platforms where it's known how
505 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
506 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
507 will now compute a table of multiples of the generator that
508 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
509 faster (notably in the case of a single point multiplication,
511 [Nils Larsch, Bodo Moeller]
513 *) IPv6 support for certificate extensions. The various extensions
514 which use the IP:a.b.c.d can now take IPv6 addresses using the
515 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
519 *) Added an ENGINE that implements RSA by performing private key
520 exponentiations with the GMP library. The conversions to and from
521 GMP's mpz_t format aren't optimised nor are any montgomery forms
522 cached, and on x86 it appears OpenSSL's own performance has caught up.
523 However there are likely to be other architectures where GMP could
524 provide a boost. This ENGINE is not built in by default, but it can be
525 specified at Configure time and should be accompanied by the necessary
526 linker additions, eg;
527 ./config -DOPENSSL_USE_GMP -lgmp
530 *) "openssl engine" will not display ENGINE/DSO load failure errors when
531 testing availability of engines with "-t" - the old behaviour is
532 produced by increasing the feature's verbosity with "-tt".
535 *) ECDSA routines: under certain error conditions uninitialized BN objects
536 could be freed. Solution: make sure initialization is performed early
537 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
541 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
542 and DH_METHOD (eg. by ENGINE implementations) to override the normal
543 software implementations. For DSA and DH, parameter generation can
544 also be overriden by providing the appropriate method callbacks.
547 *) Change the "progress" mechanism used in key-generation and
548 primality testing to functions that take a new BN_GENCB pointer in
549 place of callback/argument pairs. The new API functions have "_ex"
550 postfixes and the older functions are reimplemented as wrappers for
551 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
552 declarations of the old functions to help (graceful) attempts to
553 migrate to the new functions. Also, the new key-generation API
554 functions operate on a caller-supplied key-structure and return
555 success/failure rather than returning a key or NULL - this is to
556 help make "keygen" another member function of RSA_METHOD etc.
558 Example for using the new callback interface:
560 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
564 BN_GENCB_set(&my_cb, my_callback, my_arg);
566 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
567 /* For the meaning of a, b in calls to my_callback(), see the
568 * documentation of the function that calls the callback.
569 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
570 * my_callback should return 1 if it wants BN_is_prime_ex()
571 * to continue, or 0 to stop.
576 *) Change the ZLIB compression method to be stateful, and make it
577 available to TLS with the number defined in
578 draft-ietf-tls-compression-04.txt.
581 *) Add the ASN.1 structures and functions for CertificatePair, which
582 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
584 CertificatePair ::= SEQUENCE {
585 forward [0] Certificate OPTIONAL,
586 reverse [1] Certificate OPTIONAL,
587 -- at least one of the pair shall be present -- }
589 Also implement the PEM functions to read and write certificate
590 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
592 This needed to be defined, mostly for the sake of the LDAP
593 attribute crossCertificatePair, but may prove useful elsewhere as
597 *) Make it possible to inhibit symlinking of shared libraries in
598 Makefile.shared, for Cygwin's sake.
601 *) Extend the BIGNUM API by creating a function
602 void BN_set_negative(BIGNUM *a, int neg);
603 and a macro that behave like
604 int BN_is_negative(const BIGNUM *a);
606 to avoid the need to access 'a->neg' directly in applications.
609 *) Implement fast modular reduction for pseudo-Mersenne primes
610 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
611 EC_GROUP_new_curve_GFp() will now automatically use this
613 [Nils Larsch <nla@trustcenter.de>]
615 *) Add new lock type (CRYPTO_LOCK_BN).
618 *) Change the ENGINE framework to automatically load engines
619 dynamically from specific directories unless they could be
620 found to already be built in or loaded. Move all the
621 current engines except for the cryptodev one to a new
623 The engines in engines/ are built as shared libraries if
624 the "shared" options was given to ./Configure or ./config.
625 Otherwise, they are inserted in libcrypto.a.
626 /usr/local/ssl/engines is the default directory for dynamic
627 engines, but that can be overriden at configure time through
628 the usual use of --prefix and/or --openssldir, and at run
629 time with the environment variable OPENSSL_ENGINES.
630 [Geoff Thorpe and Richard Levitte]
632 *) Add Makefile.shared, a helper makefile to build shared
633 libraries. Addapt Makefile.org.
636 *) Add version info to Win32 DLLs.
637 [Peter 'Luna' Runestig" <peter@runestig.com>]
639 *) Add new 'medium level' PKCS#12 API. Certificates and keys
640 can be added using this API to created arbitrary PKCS#12
641 files while avoiding the low level API.
643 New options to PKCS12_create(), key or cert can be NULL and
644 will then be omitted from the output file. The encryption
645 algorithm NIDs can be set to -1 for no encryption, the mac
646 iteration count can be set to 0 to omit the mac.
648 Enhance pkcs12 utility by making the -nokeys and -nocerts
649 options work when creating a PKCS#12 file. New option -nomac
650 to omit the mac, NONE can be set for an encryption algorithm.
651 New code is modified to use the enhanced PKCS12_create()
652 instead of the low level API.
655 *) Extend ASN1 encoder to support indefinite length constructed
656 encoding. This can output sequences tags and octet strings in
657 this form. Modify pk7_asn1.c to support indefinite length
658 encoding. This is experimental and needs additional code to
659 be useful, such as an ASN1 bio and some enhanced streaming
662 Extend template encode functionality so that tagging is passed
663 down to the template encoder.
666 *) Let 'openssl req' fail if an argument to '-newkey' is not
667 recognized instead of using RSA as a default.
670 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
671 As these are not official, they are not included in "ALL";
672 the "ECCdraft" ciphersuite group alias can be used to select them.
673 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
675 *) Add ECDH engine support.
676 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
678 *) Add ECDH in new directory crypto/ecdh/.
679 [Douglas Stebila (Sun Microsystems Laboratories)]
681 *) Let BN_rand_range() abort with an error after 100 iterations
682 without success (which indicates a broken PRNG).
685 *) Change BN_mod_sqrt() so that it verifies that the input value
686 is really the square of the return value. (Previously,
687 BN_mod_sqrt would show GIGO behaviour.)
690 *) Add named elliptic curves over binary fields from X9.62, SECG,
691 and WAP/WTLS; add OIDs that were still missing.
693 [Sheueling Chang Shantz and Douglas Stebila
694 (Sun Microsystems Laboratories)]
696 *) Extend the EC library for elliptic curves over binary fields
697 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
700 EC_GF2m_simple_method
704 EC_GROUP_new_curve_GF2m
705 EC_GROUP_set_curve_GF2m
706 EC_GROUP_get_curve_GF2m
707 EC_POINT_set_affine_coordinates_GF2m
708 EC_POINT_get_affine_coordinates_GF2m
709 EC_POINT_set_compressed_coordinates_GF2m
711 Point compression for binary fields is disabled by default for
712 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
715 As binary polynomials are represented as BIGNUMs, various members
716 of the EC_GROUP and EC_POINT data structures can be shared
717 between the implementations for prime fields and binary fields;
718 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
719 are essentially identical to their ..._GFp counterparts.
720 (For simplicity, the '..._GFp' prefix has been dropped from
721 various internal method names.)
723 An internal 'field_div' method (similar to 'field_mul' and
724 'field_sqr') has been added; this is used only for binary fields.
726 [Sheueling Chang Shantz and Douglas Stebila
727 (Sun Microsystems Laboratories)]
729 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
730 through methods ('mul', 'precompute_mult').
732 The generic implementations (now internally called 'ec_wNAF_mul'
733 and 'ec_wNAF_precomputed_mult') remain the default if these
734 methods are undefined.
736 [Sheueling Chang Shantz and Douglas Stebila
737 (Sun Microsystems Laboratories)]
739 *) New function EC_GROUP_get_degree, which is defined through
740 EC_METHOD. For curves over prime fields, this returns the bit
741 length of the modulus.
743 [Sheueling Chang Shantz and Douglas Stebila
744 (Sun Microsystems Laboratories)]
746 *) New functions EC_GROUP_dup, EC_POINT_dup.
747 (These simply call ..._new and ..._copy).
749 [Sheueling Chang Shantz and Douglas Stebila
750 (Sun Microsystems Laboratories)]
752 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
753 Polynomials are represented as BIGNUMs (where the sign bit is not
754 used) in the following functions [macros]:
757 BN_GF2m_sub [= BN_GF2m_add]
758 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
759 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
760 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
762 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
763 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
764 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
765 BN_GF2m_cmp [= BN_ucmp]
767 (Note that only the 'mod' functions are actually for fields GF(2^m).
768 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
770 For some functions, an the irreducible polynomial defining a
771 field can be given as an 'unsigned int[]' with strictly
772 decreasing elements giving the indices of those bits that are set;
773 i.e., p[] represents the polynomial
774 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
776 p[0] > p[1] > ... > p[k] = 0.
777 This applies to the following functions:
782 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
783 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
786 BN_GF2m_mod_solve_quad_arr
790 Conversion can be performed by the following functions:
795 bntest.c has additional tests for binary polynomial arithmetic.
797 Two implementations for BN_GF2m_mod_div() are available.
798 The default algorithm simply uses BN_GF2m_mod_inv() and
799 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
800 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
801 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
803 [Sheueling Chang Shantz and Douglas Stebila
804 (Sun Microsystems Laboratories)]
806 *) Add new error code 'ERR_R_DISABLED' that can be used when some
807 functionality is disabled at compile-time.
808 [Douglas Stebila <douglas.stebila@sun.com>]
810 *) Change default behaviour of 'openssl asn1parse' so that more
811 information is visible when viewing, e.g., a certificate:
813 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
814 mode the content of non-printable OCTET STRINGs is output in a
815 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
816 avoid the appearance of a printable string.
817 [Nils Larsch <nla@trustcenter.de>]
819 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
821 EC_GROUP_set_asn1_flag()
822 EC_GROUP_get_asn1_flag()
823 EC_GROUP_set_point_conversion_form()
824 EC_GROUP_get_point_conversion_form()
825 These control ASN1 encoding details:
826 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
827 has been set to OPENSSL_EC_NAMED_CURVE.
828 - Points are encoded in uncompressed form by default; options for
829 asn1_for are as for point2oct, namely
830 POINT_CONVERSION_COMPRESSED
831 POINT_CONVERSION_UNCOMPRESSED
832 POINT_CONVERSION_HYBRID
834 Also add 'seed' and 'seed_len' members to EC_GROUP with access
838 EC_GROUP_get_seed_len()
839 This is used only for ASN1 purposes (so far).
840 [Nils Larsch <nla@trustcenter.de>]
842 *) Add 'field_type' member to EC_METHOD, which holds the NID
843 of the appropriate field type OID. The new function
844 EC_METHOD_get_field_type() returns this value.
845 [Nils Larsch <nla@trustcenter.de>]
852 providing useful interfaces to EC_POINT_point2oct() and
853 EC_POINT_oct2point().
854 [Nils Larsch <nla@trustcenter.de>]
856 *) Change internals of the EC library so that the functions
857 EC_GROUP_set_generator()
858 EC_GROUP_get_generator()
860 EC_GROUP_get_cofactor()
861 are implemented directly in crypto/ec/ec_lib.c and not dispatched
862 to methods, which would lead to unnecessary code duplication when
863 adding different types of curves.
864 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
866 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
867 arithmetic, and such that modified wNAFs are generated
868 (which avoid length expansion in many cases).
871 *) Add a function EC_GROUP_check_discriminant() (defined via
872 EC_METHOD) that verifies that the curve discriminant is non-zero.
874 Add a function EC_GROUP_check() that makes some sanity tests
875 on a EC_GROUP, its generator and order. This includes
876 EC_GROUP_check_discriminant().
877 [Nils Larsch <nla@trustcenter.de>]
879 *) Add ECDSA in new directory crypto/ecdsa/.
881 Add applications 'openssl ecparam' and 'openssl ecdsa'
882 (these are based on 'openssl dsaparam' and 'openssl dsa').
884 ECDSA support is also included in various other files across the
885 library. Most notably,
886 - 'openssl req' now has a '-newkey ecdsa:file' option;
887 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
888 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
889 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
890 them suitable for ECDSA where domain parameters must be
891 extracted before the specific public key;
892 - ECDSA engine support has been added.
893 [Nils Larsch <nla@trustcenter.de>]
895 *) Include some named elliptic curves, and add OIDs from X9.62,
896 SECG, and WAP/WTLS. Each curve can be obtained from the new
898 EC_GROUP_new_by_curve_name(),
899 and the list of available named curves can be obtained with
900 EC_get_builtin_curves().
901 Also add a 'curve_name' member to EC_GROUP objects, which can be
903 EC_GROUP_set_curve_name()
904 EC_GROUP_get_curve_name()
905 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
907 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
908 was actually never needed) and in BN_mul(). The removal in BN_mul()
909 required a small change in bn_mul_part_recursive() and the addition
910 of the functions bn_cmp_part_words(), bn_sub_part_words() and
911 bn_add_part_words(), which do the same thing as bn_cmp_words(),
912 bn_sub_words() and bn_add_words() except they take arrays with
916 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
918 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
919 The value now differs depending on if you build for FIPS or not.
920 BEWARE! A program linked with a shared FIPSed libcrypto can't be
921 safely run with a non-FIPSed libcrypto, as it may crash because of
922 the difference induced by this change.
925 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
927 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
928 (part of SSL_OP_ALL). This option used to disable the
929 countermeasure against man-in-the-middle protocol-version
930 rollback in the SSL 2.0 server implementation, which is a bad
931 idea. (CVE-2005-2969)
933 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
934 for Information Security, National Institute of Advanced Industrial
935 Science and Technology [AIST], Japan)]
937 *) Minimal support for X9.31 signatures and PSS padding modes. This is
938 mainly for FIPS compliance and not fully integrated at this stage.
941 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
942 the exponentiation using a fixed-length exponent. (Otherwise,
943 the information leaked through timing could expose the secret key
944 after many signatures; cf. Bleichenbacher's attack on DSA with
948 *) Make a new fixed-window mod_exp implementation the default for
949 RSA, DSA, and DH private-key operations so that the sequence of
950 squares and multiplies and the memory access pattern are
951 independent of the particular secret key. This will mitigate
952 cache-timing and potential related attacks.
954 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
955 and this is automatically used by BN_mod_exp_mont() if the new flag
956 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
957 will use this BN flag for private exponents unless the flag
958 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
959 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
961 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
963 *) Change the client implementation for SSLv23_method() and
964 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
965 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
966 (Previously, the SSL 2.0 backwards compatible Client Hello
967 message format would be used even with SSL_OP_NO_SSLv2.)
970 *) Add support for smime-type MIME parameter in S/MIME messages which some
974 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
975 a threadsafe manner. Modify rsa code to use new function and add calls
976 to dsa and dh code (which had race conditions before).
979 *) Include the fixed error library code in the C error file definitions
980 instead of fixing them up at runtime. This keeps the error code
984 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
986 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
989 *) Fixes for newer kerberos headers. NB: the casts are needed because
990 the 'length' field is signed on one version and unsigned on another
991 with no (?) obvious way to tell the difference, without these VC++
992 complains. Also the "definition" of FAR (blank) is no longer included
993 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
994 some needed definitions.
997 *) Undo Cygwin change.
1000 *) Added support for proxy certificates according to RFC 3820.
1001 Because they may be a security thread to unaware applications,
1002 they must be explicitely allowed in run-time. See
1003 docs/HOWTO/proxy_certificates.txt for further information.
1006 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1008 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1009 server and client random values. Previously
1010 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1011 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1013 This change has negligible security impact because:
1015 1. Server and client random values still have 24 bytes of pseudo random
1018 2. Server and client random values are sent in the clear in the initial
1021 3. The master secret is derived using the premaster secret (48 bytes in
1022 size for static RSA ciphersuites) as well as client server and random
1025 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1028 [Stephen Henson, reported by UK NISCC]
1030 *) Use Windows randomness collection on Cygwin.
1033 *) Fix hang in EGD/PRNGD query when communication socket is closed
1034 prematurely by EGD/PRNGD.
1035 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1037 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1040 *) Back-port of selected performance improvements from development
1041 branch, as well as improved support for PowerPC platforms.
1044 *) Add lots of checks for memory allocation failure, error codes to indicate
1045 failure and freeing up memory if a failure occurs.
1046 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1048 *) Add new -passin argument to dgst.
1051 *) Perform some character comparisons of different types in X509_NAME_cmp:
1052 this is needed for some certificates that reencode DNs into UTF8Strings
1053 (in violation of RFC3280) and can't or wont issue name rollover
1057 *) Make an explicit check during certificate validation to see that
1058 the CA setting in each certificate on the chain is correct. As a
1059 side effect always do the following basic checks on extensions,
1060 not just when there's an associated purpose to the check:
1062 - if there is an unhandled critical extension (unless the user
1063 has chosen to ignore this fault)
1064 - if the path length has been exceeded (if one is set at all)
1065 - that certain extensions fit the associated purpose (if one has
1069 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1071 *) Avoid a race condition when CRLs are checked in a multi threaded
1072 environment. This would happen due to the reordering of the revoked
1073 entries during signature checking and serial number lookup. Now the
1074 encoding is cached and the serial number sort performed under a lock.
1075 Add new STACK function sk_is_sorted().
1078 *) Add Delta CRL to the extension code.
1081 *) Various fixes to s3_pkt.c so alerts are sent properly.
1082 [David Holmes <d.holmes@f5.com>]
1084 *) Reduce the chances of duplicate issuer name and serial numbers (in
1085 violation of RFC3280) using the OpenSSL certificate creation utilities.
1086 This is done by creating a random 64 bit value for the initial serial
1087 number when a serial number file is created or when a self signed
1088 certificate is created using 'openssl req -x509'. The initial serial
1089 number file is created using 'openssl x509 -next_serial' in CA.pl
1090 rather than being initialized to 1.
1093 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1095 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1096 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1097 [Joe Orton, Steve Henson]
1099 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1101 [Joe Orton, Steve Henson]
1103 *) Make it possible to have multiple active certificates with the same
1104 subject in the CA index file. This is done only if the keyword
1105 'unique_subject' is set to 'no' in the main CA section (default
1106 if 'CA_default') of the configuration file. The value is saved
1107 with the database itself in a separate index attribute file,
1108 named like the index file with '.attr' appended to the name.
1111 *) X509 verify fixes. Disable broken certificate workarounds when
1112 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1113 keyUsage extension present. Don't accept CRLs with unhandled critical
1114 extensions: since verify currently doesn't process CRL extensions this
1115 rejects a CRL with *any* critical extensions. Add new verify error codes
1119 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1120 A clarification of RFC2560 will require the use of OCTET STRINGs and
1121 some implementations cannot handle the current raw format. Since OpenSSL
1122 copies and compares OCSP nonces as opaque blobs without any attempt at
1123 parsing them this should not create any compatibility issues.
1126 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1127 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1128 this HMAC (and other) operations are several times slower than OpenSSL
1132 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1133 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1135 *) Use the correct content when signing type "other".
1138 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1140 *) Fix various bugs revealed by running the NISCC test suite:
1142 Stop out of bounds reads in the ASN1 code when presented with
1143 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1145 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1147 If verify callback ignores invalid public key errors don't try to check
1148 certificate signature with the NULL public key.
1152 *) New -ignore_err option in ocsp application to stop the server
1153 exiting on the first error in a request.
1156 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1157 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1161 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1162 extra data after the compression methods not only for TLS 1.0
1163 but also for SSL 3.0 (as required by the specification).
1164 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1166 *) Change X509_certificate_type() to mark the key as exported/exportable
1167 when it's 512 *bits* long, not 512 bytes.
1170 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1171 blocks during encryption.
1174 *) Various fixes to base64 BIO and non blocking I/O. On write
1175 flushes were not handled properly if the BIO retried. On read
1176 data was not being buffered properly and had various logic bugs.
1177 This also affects blocking I/O when the data being decoded is a
1181 *) Various S/MIME bugfixes and compatibility changes:
1182 output correct application/pkcs7 MIME type if
1183 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1184 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1185 of files as .eml work). Correctly handle very long lines in MIME
1189 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1191 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1192 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1193 a protocol version number mismatch like a decryption error
1194 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1197 *) Turn on RSA blinding by default in the default implementation
1198 to avoid a timing attack. Applications that don't want it can call
1199 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1200 They would be ill-advised to do so in most cases.
1201 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1203 *) Change RSA blinding code so that it works when the PRNG is not
1204 seeded (in this case, the secret RSA exponent is abused as
1205 an unpredictable seed -- if it is not unpredictable, there
1206 is no point in blinding anyway). Make RSA blinding thread-safe
1207 by remembering the creator's thread ID in rsa->blinding and
1208 having all other threads use local one-time blinding factors
1209 (this requires more computation than sharing rsa->blinding, but
1210 avoids excessive locking; and if an RSA object is not shared
1211 between threads, blinding will still be very fast).
1214 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1215 ENGINE as defaults for all supported algorithms irrespective of
1216 the 'flags' parameter. 'flags' is now honoured, so applications
1217 should make sure they are passing it correctly.
1220 *) Target "mingw" now allows native Windows code to be generated in
1221 the Cygwin environment as well as with the MinGW compiler.
1224 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1226 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1227 via timing by performing a MAC computation even if incorrrect
1228 block cipher padding has been found. This is a countermeasure
1229 against active attacks where the attacker has to distinguish
1230 between bad padding and a MAC verification error. (CVE-2003-0078)
1232 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1233 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1234 Martin Vuagnoux (EPFL, Ilion)]
1236 *) Make the no-err option work as intended. The intention with no-err
1237 is not to have the whole error stack handling routines removed from
1238 libcrypto, it's only intended to remove all the function name and
1239 reason texts, thereby removing some of the footprint that may not
1240 be interesting if those errors aren't displayed anyway.
1242 NOTE: it's still possible for any application or module to have it's
1243 own set of error texts inserted. The routines are there, just not
1244 used by default when no-err is given.
1247 *) Add support for FreeBSD on IA64.
1248 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1250 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1251 Kerberos function mit_des_cbc_cksum(). Before this change,
1252 the value returned by DES_cbc_cksum() was like the one from
1253 mit_des_cbc_cksum(), except the bytes were swapped.
1254 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1256 *) Allow an application to disable the automatic SSL chain building.
1257 Before this a rather primitive chain build was always performed in
1258 ssl3_output_cert_chain(): an application had no way to send the
1259 correct chain if the automatic operation produced an incorrect result.
1261 Now the chain builder is disabled if either:
1263 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1265 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1267 The reasoning behind this is that an application would not want the
1268 auto chain building to take place if extra chain certificates are
1269 present and it might also want a means of sending no additional
1270 certificates (for example the chain has two certificates and the
1274 *) Add the possibility to build without the ENGINE framework.
1275 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1277 *) Under Win32 gmtime() can return NULL: check return value in
1278 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1281 *) DSA routines: under certain error conditions uninitialized BN objects
1282 could be freed. Solution: make sure initialization is performed early
1283 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1284 Nils Larsch <nla@trustcenter.de> via PR#459)
1287 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1288 checked on reconnect on the client side, therefore session resumption
1289 could still fail with a "ssl session id is different" error. This
1290 behaviour is masked when SSL_OP_ALL is used due to
1291 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1292 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1293 followup to PR #377.
1296 *) IA-32 assembler support enhancements: unified ELF targets, support
1297 for SCO/Caldera platforms, fix for Cygwin shared build.
1300 *) Add support for FreeBSD on sparc64. As a consequence, support for
1301 FreeBSD on non-x86 processors is separate from x86 processors on
1302 the config script, much like the NetBSD support.
1303 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1305 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1307 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1310 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1311 code (06) was taken as the first octet of the session ID and the last
1312 octet was ignored consequently. As a result SSLv2 client side session
1313 caching could not have worked due to the session ID mismatch between
1315 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1319 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1320 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1324 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1325 seems that in spite of existing for more than a year, many application
1326 author have done nothing to provide the necessary callbacks, which
1327 means that this particular engine will not work properly anywhere.
1328 This is a very unfortunate situation which forces us, in the name
1329 of usability, to give the hw_ncipher.c a static lock, which is part
1331 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1332 appear in 0.9.8 or later. We EXPECT application authors to have
1333 dealt properly with this when 0.9.8 is released (unless we actually
1334 make such changes in the libcrypto locking code that changes will
1335 have to be made anyway).
1338 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1339 octets have been read, EOF or an error occurs. Without this change
1340 some truncated ASN1 structures will not produce an error.
1343 *) Disable Heimdal support, since it hasn't been fully implemented.
1344 Still give the possibility to force the use of Heimdal, but with
1345 warnings and a request that patches get sent to openssl-dev.
1348 *) Add the VC-CE target, introduce the WINCE sysname, and add
1349 INSTALL.WCE and appropriate conditionals to make it build.
1350 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1352 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1353 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1354 edit numbers of the version.
1355 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1357 *) Introduce safe string copy and catenation functions
1358 (BUF_strlcpy() and BUF_strlcat()).
1359 [Ben Laurie (CHATS) and Richard Levitte]
1361 *) Avoid using fixed-size buffers for one-line DNs.
1362 [Ben Laurie (CHATS)]
1364 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1365 resizing buffers containing secrets, and use where appropriate.
1366 [Ben Laurie (CHATS)]
1368 *) Avoid using fixed size buffers for configuration file location.
1369 [Ben Laurie (CHATS)]
1371 *) Avoid filename truncation for various CA files.
1372 [Ben Laurie (CHATS)]
1374 *) Use sizeof in preference to magic numbers.
1375 [Ben Laurie (CHATS)]
1377 *) Avoid filename truncation in cert requests.
1378 [Ben Laurie (CHATS)]
1380 *) Add assertions to check for (supposedly impossible) buffer
1382 [Ben Laurie (CHATS)]
1384 *) Don't cache truncated DNS entries in the local cache (this could
1385 potentially lead to a spoofing attack).
1386 [Ben Laurie (CHATS)]
1388 *) Fix various buffers to be large enough for hex/decimal
1389 representations in a platform independent manner.
1390 [Ben Laurie (CHATS)]
1392 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1393 resizing buffers containing secrets, and use where appropriate.
1394 [Ben Laurie (CHATS)]
1396 *) Add BIO_indent() to avoid much slightly worrying code to do
1398 [Ben Laurie (CHATS)]
1400 *) Convert sprintf()/BIO_puts() to BIO_printf().
1401 [Ben Laurie (CHATS)]
1403 *) buffer_gets() could terminate with the buffer only half
1405 [Ben Laurie (CHATS)]
1407 *) Add assertions to prevent user-supplied crypto functions from
1408 overflowing internal buffers by having large block sizes, etc.
1409 [Ben Laurie (CHATS)]
1411 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1413 [Ben Laurie (CHATS)]
1415 *) Eliminate unused copy of key in RC4.
1416 [Ben Laurie (CHATS)]
1418 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1419 [Ben Laurie (CHATS)]
1421 *) Fix off-by-one error in EGD path.
1422 [Ben Laurie (CHATS)]
1424 *) If RANDFILE path is too long, ignore instead of truncating.
1425 [Ben Laurie (CHATS)]
1427 *) Eliminate unused and incorrectly sized X.509 structure
1429 [Ben Laurie (CHATS)]
1431 *) Eliminate unused and dangerous function knumber().
1432 [Ben Laurie (CHATS)]
1434 *) Eliminate unused and dangerous structure, KSSL_ERR.
1435 [Ben Laurie (CHATS)]
1437 *) Protect against overlong session ID context length in an encoded
1438 session object. Since these are local, this does not appear to be
1440 [Ben Laurie (CHATS)]
1442 *) Change from security patch (see 0.9.6e below) that did not affect
1443 the 0.9.6 release series:
1445 Remote buffer overflow in SSL3 protocol - an attacker could
1446 supply an oversized master key in Kerberos-enabled versions.
1448 [Ben Laurie (CHATS)]
1450 *) Change the SSL kerb5 codes to match RFC 2712.
1453 *) Make -nameopt work fully for req and add -reqopt switch.
1454 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1456 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1457 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1459 *) Make sure tests can be performed even if the corresponding algorithms
1460 have been removed entirely. This was also the last step to make
1461 OpenSSL compilable with DJGPP under all reasonable conditions.
1462 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1464 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1465 to allow version independent disabling of normally unselected ciphers,
1466 which may be activated as a side-effect of selecting a single cipher.
1468 (E.g., cipher list string "RSA" enables ciphersuites that are left
1469 out of "ALL" because they do not provide symmetric encryption.
1470 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1471 [Lutz Jaenicke, Bodo Moeller]
1473 *) Add appropriate support for separate platform-dependent build
1474 directories. The recommended way to make a platform-dependent
1475 build directory is the following (tested on Linux), maybe with
1478 # Place yourself outside of the OpenSSL source tree. In
1479 # this example, the environment variable OPENSSL_SOURCE
1480 # is assumed to contain the absolute OpenSSL source directory.
1481 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1482 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1483 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1484 mkdir -p `dirname $F`
1485 ln -s $OPENSSL_SOURCE/$F $F
1488 To be absolutely sure not to disturb the source tree, a "make clean"
1489 is a good thing. If it isn't successfull, don't worry about it,
1490 it probably means the source directory is very clean.
1493 *) Make sure any ENGINE control commands make local copies of string
1494 pointers passed to them whenever necessary. Otherwise it is possible
1495 the caller may have overwritten (or deallocated) the original string
1496 data when a later ENGINE operation tries to use the stored values.
1497 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1499 *) Improve diagnostics in file reading and command-line digests.
1500 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1502 *) Add AES modes CFB and OFB to the object database. Correct an
1503 error in AES-CFB decryption.
1506 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1507 allows existing EVP_CIPHER_CTX structures to be reused after
1508 calling EVP_*Final(). This behaviour is used by encryption
1509 BIOs and some applications. This has the side effect that
1510 applications must explicitly clean up cipher contexts with
1511 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1514 *) Check the values of dna and dnb in bn_mul_recursive before calling
1515 bn_mul_comba (a non zero value means the a or b arrays do not contain
1516 n2 elements) and fallback to bn_mul_normal if either is not zero.
1519 *) Fix escaping of non-ASCII characters when using the -subj option
1520 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1523 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1524 form for "surname", serialNumber has no short form.
1525 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1526 therefore remove "mail" short name for "internet 7".
1527 The OID for unique identifiers in X509 certificates is
1528 x500UniqueIdentifier, not uniqueIdentifier.
1529 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1532 *) Add an "init" command to the ENGINE config module and auto initialize
1533 ENGINEs. Without any "init" command the ENGINE will be initialized
1534 after all ctrl commands have been executed on it. If init=1 the
1535 ENGINE is initailized at that point (ctrls before that point are run
1536 on the uninitialized ENGINE and after on the initialized one). If
1537 init=0 then the ENGINE will not be iniatialized at all.
1540 *) Fix the 'app_verify_callback' interface so that the user-defined
1541 argument is actually passed to the callback: In the
1542 SSL_CTX_set_cert_verify_callback() prototype, the callback
1543 declaration has been changed from
1546 int (*cb)(X509_STORE_CTX *,void *);
1547 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1548 i=s->ctx->app_verify_callback(&ctx)
1549 has been changed into
1550 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1552 To update applications using SSL_CTX_set_cert_verify_callback(),
1553 a dummy argument can be added to their callback functions.
1554 [D. K. Smetters <smetters@parc.xerox.com>]
1556 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1557 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1559 *) Add and OPENSSL_LOAD_CONF define which will cause
1560 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1561 This allows older applications to transparently support certain
1562 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1563 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1564 load the config file and OPENSSL_add_all_algorithms_conf() which will
1565 always load it have also been added.
1568 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1569 Adjust NIDs and EVP layer.
1570 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1572 *) Config modules support in openssl utility.
1574 Most commands now load modules from the config file,
1575 though in a few (such as version) this isn't done
1576 because it couldn't be used for anything.
1578 In the case of ca and req the config file used is
1579 the same as the utility itself: that is the -config
1580 command line option can be used to specify an
1584 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1585 use "openssl_conf" if filename is NULL use default openssl config file.
1588 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1589 config section name. Add a new flag to tolerate a missing config file
1590 and move code to CONF_modules_load_file().
1593 *) Support for crypto accelerator cards from Accelerated Encryption
1594 Processing, www.aep.ie. (Use engine 'aep')
1595 The support was copied from 0.9.6c [engine] and adapted/corrected
1596 to work with the new engine framework.
1597 [AEP Inc. and Richard Levitte]
1599 *) Support for SureWare crypto accelerator cards from Baltimore
1600 Technologies. (Use engine 'sureware')
1601 The support was copied from 0.9.6c [engine] and adapted
1602 to work with the new engine framework.
1605 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1606 make the newer ENGINE framework commands for the CHIL engine work.
1607 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1609 *) Make it possible to produce shared libraries on ReliantUNIX.
1610 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1612 *) Add the configuration target debug-linux-ppro.
1613 Make 'openssl rsa' use the general key loading routines
1614 implemented in apps.c, and make those routines able to
1615 handle the key format FORMAT_NETSCAPE and the variant
1617 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1619 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1620 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1622 *) Add -keyform to rsautl, and document -engine.
1623 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1625 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1626 BIO_R_NO_SUCH_FILE error code rather than the generic
1627 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1630 *) Add new functions
1632 ERR_peek_last_error_line
1633 ERR_peek_last_error_line_data.
1634 These are similar to
1637 ERR_peek_error_line_data,
1638 but report on the latest error recorded rather than the first one
1639 still in the error queue.
1640 [Ben Laurie, Bodo Moeller]
1642 *) default_algorithms option in ENGINE config module. This allows things
1644 default_algorithms = ALL
1645 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1648 *) Prelminary ENGINE config module.
1651 *) New experimental application configuration code.
1654 *) Change the AES code to follow the same name structure as all other
1655 symmetric ciphers, and behave the same way. Move everything to
1656 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1657 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1659 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1660 [Ben Laurie and Theo de Raadt]
1662 *) Add option to output public keys in req command.
1663 [Massimiliano Pala madwolf@openca.org]
1665 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1666 (up to about 10% better than before for P-192 and P-224).
1669 *) New functions/macros
1671 SSL_CTX_set_msg_callback(ctx, cb)
1672 SSL_CTX_set_msg_callback_arg(ctx, arg)
1673 SSL_set_msg_callback(ssl, cb)
1674 SSL_set_msg_callback_arg(ssl, arg)
1676 to request calling a callback function
1678 void cb(int write_p, int version, int content_type,
1679 const void *buf, size_t len, SSL *ssl, void *arg)
1681 whenever a protocol message has been completely received
1682 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1683 protocol version according to which the SSL library interprets
1684 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1685 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1686 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1687 specification (change_cipher_spec(20), alert(21), handshake(22)).
1688 'buf' and 'len' point to the actual message, 'ssl' to the
1689 SSL object, and 'arg' is the application-defined value set by
1690 SSL[_CTX]_set_msg_callback_arg().
1692 'openssl s_client' and 'openssl s_server' have new '-msg' options
1693 to enable a callback that displays all protocol messages.
1696 *) Change the shared library support so shared libraries are built as
1697 soon as the corresponding static library is finished, and thereby get
1698 openssl and the test programs linked against the shared library.
1699 This still only happens when the keyword "shard" has been given to
1700 the configuration scripts.
1702 NOTE: shared library support is still an experimental thing, and
1703 backward binary compatibility is still not guaranteed.
1704 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1706 *) Add support for Subject Information Access extension.
1707 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1709 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1710 additional bytes when new memory had to be allocated, not just
1711 when reusing an existing buffer.
1714 *) New command line and configuration option 'utf8' for the req command.
1715 This allows field values to be specified as UTF8 strings.
1718 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1719 runs for the former and machine-readable output for the latter.
1722 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1723 of the e-mail address in the DN (i.e., it will go into a certificate
1724 extension only). The new configuration file option 'email_in_dn = no'
1725 has the same effect.
1726 [Massimiliano Pala madwolf@openca.org]
1728 *) Change all functions with names starting with des_ to be starting
1729 with DES_ instead. Add wrappers that are compatible with libdes,
1730 but are named _ossl_old_des_*. Finally, add macros that map the
1731 des_* symbols to the corresponding _ossl_old_des_* if libdes
1732 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1733 desired, the des_* symbols will be mapped to DES_*, with one
1736 Since we provide two compatibility mappings, the user needs to
1737 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1738 compatibility is desired. The default (i.e., when that macro
1739 isn't defined) is OpenSSL 0.9.6c compatibility.
1741 There are also macros that enable and disable the support of old
1742 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1743 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1744 are defined, the default will apply: to support the old des routines.
1746 In either case, one must include openssl/des.h to get the correct
1747 definitions. Do not try to just include openssl/des_old.h, that
1750 NOTE: This is a major break of an old API into a new one. Software
1751 authors are encouraged to switch to the DES_ style functions. Some
1752 time in the future, des_old.h and the libdes compatibility functions
1753 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1754 default), and then completely removed.
1757 *) Test for certificates which contain unsupported critical extensions.
1758 If such a certificate is found during a verify operation it is
1759 rejected by default: this behaviour can be overridden by either
1760 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1761 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1762 X509_supported_extension() has also been added which returns 1 if a
1763 particular extension is supported.
1766 *) Modify the behaviour of EVP cipher functions in similar way to digests
1767 to retain compatibility with existing code.
1770 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1771 compatibility with existing code. In particular the 'ctx' parameter does
1772 not have to be to be initialized before the call to EVP_DigestInit() and
1773 it is tidied up after a call to EVP_DigestFinal(). New function
1774 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1775 EVP_MD_CTX_copy() changed to not require the destination to be
1776 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1777 requires the destination to be valid.
1779 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1780 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1783 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1784 so that complete 'Handshake' protocol structures are kept in memory
1785 instead of overwriting 'msg_type' and 'length' with 'body' data.
1788 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1789 [Massimo Santin via Richard Levitte]
1791 *) Major restructuring to the underlying ENGINE code. This includes
1792 reduction of linker bloat, separation of pure "ENGINE" manipulation
1793 (initialisation, etc) from functionality dealing with implementations
1794 of specific crypto iterfaces. This change also introduces integrated
1795 support for symmetric ciphers and digest implementations - so ENGINEs
1796 can now accelerate these by providing EVP_CIPHER and EVP_MD
1797 implementations of their own. This is detailed in crypto/engine/README
1798 as it couldn't be adequately described here. However, there are a few
1799 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1800 were changed in the original introduction of ENGINE code have now
1801 reverted back - the hooking from this code to ENGINE is now a good
1802 deal more passive and at run-time, operations deal directly with
1803 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1804 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1805 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1806 they were not being used by the framework as there is no concept of a
1807 BIGNUM_METHOD and they could not be generalised to the new
1808 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1809 ENGINE_cpy() has been removed as it cannot be consistently defined in
1813 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1816 *) Change mkdef.pl to sort symbols that get the same entry number,
1817 and make sure the automatically generated functions ERR_load_*
1818 become part of libeay.num as well.
1821 *) New function SSL_renegotiate_pending(). This returns true once
1822 renegotiation has been requested (either SSL_renegotiate() call
1823 or HelloRequest/ClientHello receveived from the peer) and becomes
1824 false once a handshake has been completed.
1825 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1826 sends a HelloRequest, but does not ensure that a handshake takes
1827 place. SSL_renegotiate_pending() is useful for checking if the
1828 client has followed the request.)
1831 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1832 By default, clients may request session resumption even during
1833 renegotiation (if session ID contexts permit); with this option,
1834 session resumption is possible only in the first handshake.
1836 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1837 more bits available for options that should not be part of
1838 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1841 *) Add some demos for certificate and certificate request creation.
1844 *) Make maximum certificate chain size accepted from the peer application
1845 settable (SSL*_get/set_max_cert_list()), as proposed by
1846 "Douglas E. Engert" <deengert@anl.gov>.
1849 *) Add support for shared libraries for Unixware-7
1850 (Boyd Lynn Gerber <gerberb@zenez.com>).
1853 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1854 be done prior to destruction. Use this to unload error strings from
1855 ENGINEs that load their own error strings. NB: This adds two new API
1856 functions to "get" and "set" this destroy handler in an ENGINE.
1859 *) Alter all existing ENGINE implementations (except "openssl" and
1860 "openbsd") to dynamically instantiate their own error strings. This
1861 makes them more flexible to be built both as statically-linked ENGINEs
1862 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1863 Also, add stub code to each that makes building them as self-contained
1864 shared-libraries easier (see README.ENGINE).
1867 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1868 implementations into applications that are completely implemented in
1869 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1870 commands that can be used to configure what shared-library to load and
1871 to control aspects of the way it is handled. Also, made an update to
1872 the README.ENGINE file that brings its information up-to-date and
1873 provides some information and instructions on the "dynamic" ENGINE
1874 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1877 *) Make it possible to unload ranges of ERR strings with a new
1878 "ERR_unload_strings" function.
1881 *) Add a copy() function to EVP_MD.
1884 *) Make EVP_MD routines take a context pointer instead of just the
1885 md_data void pointer.
1888 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1889 that the digest can only process a single chunk of data
1890 (typically because it is provided by a piece of
1891 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1892 is only going to provide a single chunk of data, and hence the
1893 framework needn't accumulate the data for oneshot drivers.
1896 *) As with "ERR", make it possible to replace the underlying "ex_data"
1897 functions. This change also alters the storage and management of global
1898 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1899 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1900 index counters. The API functions that use this state have been changed
1901 to take a "class_index" rather than pointers to the class's local STACK
1902 and counter, and there is now an API function to dynamically create new
1903 classes. This centralisation allows us to (a) plug a lot of the
1904 thread-safety problems that existed, and (b) makes it possible to clean
1905 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1906 such data would previously have always leaked in application code and
1907 workarounds were in place to make the memory debugging turn a blind eye
1908 to it. Application code that doesn't use this new function will still
1909 leak as before, but their memory debugging output will announce it now
1910 rather than letting it slide.
1912 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1913 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1914 has a return value to indicate success or failure.
1917 *) Make it possible to replace the underlying "ERR" functions such that the
1918 global state (2 LHASH tables and 2 locks) is only used by the "default"
1919 implementation. This change also adds two functions to "get" and "set"
1920 the implementation prior to it being automatically set the first time
1921 any other ERR function takes place. Ie. an application can call "get",
1922 pass the return value to a module it has just loaded, and that module
1923 can call its own "set" function using that value. This means the
1924 module's "ERR" operations will use (and modify) the error state in the
1925 application and not in its own statically linked copy of OpenSSL code.
1928 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1929 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1930 the operation, and provides a more encapsulated way for external code
1931 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1932 to use these functions rather than manually incrementing the counts.
1934 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1937 *) Add EVP test program.
1940 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1943 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1944 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1945 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1946 These allow a CRL to be built without having to access X509_CRL fields
1947 directly. Modify 'ca' application to use new functions.
1950 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1951 bug workarounds. Rollback attack detection is a security feature.
1952 The problem will only arise on OpenSSL servers when TLSv1 is not
1953 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1954 Software authors not wanting to support TLSv1 will have special reasons
1955 for their choice and can explicitly enable this option.
1956 [Bodo Moeller, Lutz Jaenicke]
1958 *) Rationalise EVP so it can be extended: don't include a union of
1959 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1960 (similar to those existing for EVP_CIPHER_CTX).
1965 EVP_MD_CTX_init(&md); /* new function call */
1966 EVP_DigestInit(&md, EVP_sha1());
1967 EVP_DigestUpdate(&md, in, len);
1968 EVP_DigestFinal(&md, out, NULL);
1969 EVP_MD_CTX_cleanup(&md); /* new function call */
1973 *) Make DES key schedule conform to the usual scheme, as well as
1974 correcting its structure. This means that calls to DES functions
1975 now have to pass a pointer to a des_key_schedule instead of a
1976 plain des_key_schedule (which was actually always a pointer
1979 des_key_schedule ks;
1981 des_set_key_checked(..., &ks);
1982 des_ncbc_encrypt(..., &ks, ...);
1984 (Note that a later change renames 'des_...' into 'DES_...'.)
1987 *) Initial reduction of linker bloat: the use of some functions, such as
1988 PEM causes large amounts of unused functions to be linked in due to
1989 poor organisation. For example pem_all.c contains every PEM function
1990 which has a knock on effect of linking in large amounts of (unused)
1991 ASN1 code. Grouping together similar functions and splitting unrelated
1992 functions prevents this.
1995 *) Cleanup of EVP macros.
1998 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1999 correct _ecb suffix.
2002 *) Add initial OCSP responder support to ocsp application. The
2003 revocation information is handled using the text based index
2004 use by the ca application. The responder can either handle
2005 requests generated internally, supplied in files (for example
2006 via a CGI script) or using an internal minimal server.
2009 *) Add configuration choices to get zlib compression for TLS.
2012 *) Changes to Kerberos SSL for RFC 2712 compliance:
2013 1. Implemented real KerberosWrapper, instead of just using
2014 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2015 2. Implemented optional authenticator field of KerberosWrapper.
2017 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2018 and authenticator structs; see crypto/krb5/.
2020 Generalized Kerberos calls to support multiple Kerberos libraries.
2021 [Vern Staats <staatsvr@asc.hpc.mil>,
2022 Jeffrey Altman <jaltman@columbia.edu>
2023 via Richard Levitte]
2025 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2026 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2027 values for each of the key sizes rather than having just
2028 parameters (and 'speed' generating keys each time).
2031 *) Speed up EVP routines.
2034 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2035 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2036 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2037 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2039 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2040 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2041 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2044 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2046 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2049 *) Added the OS2-EMX target.
2050 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2052 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2053 to support NCONF routines in extension code. New function CONF_set_nconf()
2054 to allow functions which take an NCONF to also handle the old LHASH
2055 structure: this means that the old CONF compatible routines can be
2056 retained (in particular wrt extensions) without having to duplicate the
2057 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2060 *) Enhance the general user interface with mechanisms for inner control
2061 and with possibilities to have yes/no kind of prompts.
2064 *) Change all calls to low level digest routines in the library and
2065 applications to use EVP. Add missing calls to HMAC_cleanup() and
2066 don't assume HMAC_CTX can be copied using memcpy().
2067 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2069 *) Add the possibility to control engines through control names but with
2070 arbitrary arguments instead of just a string.
2071 Change the key loaders to take a UI_METHOD instead of a callback
2072 function pointer. NOTE: this breaks binary compatibility with earlier
2073 versions of OpenSSL [engine].
2074 Adapt the nCipher code for these new conditions and add a card insertion
2078 *) Enhance the general user interface with mechanisms to better support
2079 dialog box interfaces, application-defined prompts, the possibility
2080 to use defaults (for example default passwords from somewhere else)
2081 and interrupts/cancellations.
2084 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2085 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2088 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2089 tidy up some unnecessarily weird code in 'sk_new()').
2090 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2092 *) Change the key loading routines for ENGINEs to use the same kind
2093 callback (pem_password_cb) as all other routines that need this
2097 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2098 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2099 than this minimum value is recommended.
2102 *) New random seeder for OpenVMS, using the system process statistics
2103 that are easily reachable.
2106 *) Windows apparently can't transparently handle global
2107 variables defined in DLLs. Initialisations such as:
2109 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2111 wont compile. This is used by the any applications that need to
2112 declare their own ASN1 modules. This was fixed by adding the option
2113 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2114 needed for static libraries under Win32.
2117 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2118 setting of purpose and trust fields. New X509_STORE trust and
2119 purpose functions and tidy up setting in other SSL functions.
2122 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2123 structure. These are inherited by X509_STORE_CTX when it is
2124 initialised. This allows various defaults to be set in the
2125 X509_STORE structure (such as flags for CRL checking and custom
2126 purpose or trust settings) for functions which only use X509_STORE_CTX
2127 internally such as S/MIME.
2129 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2130 trust settings if they are not set in X509_STORE. This allows X509_STORE
2131 purposes and trust (in S/MIME for example) to override any set by default.
2133 Add command line options for CRL checking to smime, s_client and s_server
2137 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2138 are set then the CRL is looked up in the X509_STORE structure and
2139 its validity and signature checked, then if the certificate is found
2140 in the CRL the verify fails with a revoked error.
2142 Various new CRL related callbacks added to X509_STORE_CTX structure.
2144 Command line options added to 'verify' application to support this.
2146 This needs some additional work, such as being able to handle multiple
2147 CRLs with different times, extension based lookup (rather than just
2148 by subject name) and ultimately more complete V2 CRL extension
2152 *) Add a general user interface API (crypto/ui/). This is designed
2153 to replace things like des_read_password and friends (backward
2154 compatibility functions using this new API are provided).
2155 The purpose is to remove prompting functions from the DES code
2156 section as well as provide for prompting through dialog boxes in
2157 a window system and the like.
2160 *) Add "ex_data" support to ENGINE so implementations can add state at a
2161 per-structure level rather than having to store it globally.
2164 *) Make it possible for ENGINE structures to be copied when retrieved by
2165 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2166 This causes the "original" ENGINE structure to act like a template,
2167 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2168 operational state can be localised to each ENGINE structure, despite the
2169 fact they all share the same "methods". New ENGINE structures returned in
2170 this case have no functional references and the return value is the single
2171 structural reference. This matches the single structural reference returned
2172 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2176 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2177 needs to match any other type at all we need to manually clear the
2181 *) Changes to the "openssl engine" utility to include;
2182 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2183 about an ENGINE's available control commands.
2184 - executing control commands from command line arguments using the
2185 '-pre' and '-post' switches. '-post' is only used if '-t' is
2186 specified and the ENGINE is successfully initialised. The syntax for
2187 the individual commands are colon-separated, for example;
2188 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2191 *) New dynamic control command support for ENGINEs. ENGINEs can now
2192 declare their own commands (numbers), names (strings), descriptions,
2193 and input types for run-time discovery by calling applications. A
2194 subset of these commands are implicitly classed as "executable"
2195 depending on their input type, and only these can be invoked through
2196 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2197 can be based on user input, config files, etc). The distinction is
2198 that "executable" commands cannot return anything other than a boolean
2199 result and can only support numeric or string input, whereas some
2200 discoverable commands may only be for direct use through
2201 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2202 pointers, or other custom uses. The "executable" commands are to
2203 support parameterisations of ENGINE behaviour that can be
2204 unambiguously defined by ENGINEs and used consistently across any
2205 OpenSSL-based application. Commands have been added to all the
2206 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2207 control over shared-library paths without source code alterations.
2210 *) Changed all ENGINE implementations to dynamically allocate their
2211 ENGINEs rather than declaring them statically. Apart from this being
2212 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2213 this also allows the implementations to compile without using the
2214 internal engine_int.h header.
2217 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2218 'const' value. Any code that should be able to modify a RAND_METHOD
2219 should already have non-const pointers to it (ie. they should only
2220 modify their own ones).
2223 *) Made a variety of little tweaks to the ENGINE code.
2224 - "atalla" and "ubsec" string definitions were moved from header files
2225 to C code. "nuron" string definitions were placed in variables
2226 rather than hard-coded - allowing parameterisation of these values
2227 later on via ctrl() commands.
2228 - Removed unused "#if 0"'d code.
2229 - Fixed engine list iteration code so it uses ENGINE_free() to release
2230 structural references.
2231 - Constified the RAND_METHOD element of ENGINE structures.
2232 - Constified various get/set functions as appropriate and added
2233 missing functions (including a catch-all ENGINE_cpy that duplicates
2234 all ENGINE values onto a new ENGINE except reference counts/state).
2235 - Removed NULL parameter checks in get/set functions. Setting a method
2236 or function to NULL is a way of cancelling out a previously set
2237 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2238 and doesn't justify the extra error symbols and code.
2239 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2240 flags from engine_int.h to engine.h.
2241 - Changed prototypes for ENGINE handler functions (init(), finish(),
2242 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2245 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2246 to the algorithm using long division. The binary algorithm can be
2247 used only if the modulus is odd. On 32-bit systems, it is faster
2248 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2249 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2250 up to 450 bits. In 64-bit environments, the binary algorithm
2251 appears to be advantageous for much longer moduli; here we use it
2252 for moduli up to 2048 bits.
2255 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2256 could not support the combine flag in choice fields.
2259 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2260 extensions from a certificate request to the certificate.
2263 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2264 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2265 file: this allows the display of the certificate about to be
2266 signed to be customised, to allow certain fields to be included
2267 or excluded and extension details. The old system didn't display
2268 multicharacter strings properly, omitted fields not in the policy
2269 and couldn't display additional details such as extensions.
2272 *) Function EC_POINTs_mul for multiple scalar multiplication
2273 of an arbitrary number of elliptic curve points
2274 \sum scalars[i]*points[i],
2275 optionally including the generator defined for the EC_GROUP:
2276 scalar*generator + \sum scalars[i]*points[i].
2278 EC_POINT_mul is a simple wrapper function for the typical case
2279 that the point list has just one item (besides the optional
2283 *) First EC_METHODs for curves over GF(p):
2285 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2286 operations and provides various method functions that can also
2287 operate with faster implementations of modular arithmetic.
2289 EC_GFp_mont_method() reuses most functions that are part of
2290 EC_GFp_simple_method, but uses Montgomery arithmetic.
2292 [Bodo Moeller; point addition and point doubling
2293 implementation directly derived from source code provided by
2294 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2296 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2297 crypto/ec/ec_lib.c):
2299 Curves are EC_GROUP objects (with an optional group generator)
2300 based on EC_METHODs that are built into the library.
2302 Points are EC_POINT objects based on EC_GROUP objects.
2304 Most of the framework would be able to handle curves over arbitrary
2305 finite fields, but as there are no obvious types for fields other
2306 than GF(p), some functions are limited to that for now.
2309 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2310 that the file contains a complete HTTP response.
2313 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2314 change the def and num file printf format specifier from "%-40sXXX"
2315 to "%-39s XXX". The latter will always guarantee a space after the
2316 field while the former will cause them to run together if the field
2317 is 40 of more characters long.
2320 *) Constify the cipher and digest 'method' functions and structures
2321 and modify related functions to take constant EVP_MD and EVP_CIPHER
2325 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2326 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2329 *) Modify EVP_Digest*() routines so they now return values. Although the
2330 internal software routines can never fail additional hardware versions
2334 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2336 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2337 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2340 ERR_R_NESTED_ASN1_ERROR
2342 ERR_R_MISSING_ASN1_EOS
2343 were 4 .. 9, conflicting with
2344 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2346 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2347 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2349 Add new error code 'ERR_R_INTERNAL_ERROR'.
2352 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2356 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2357 sets the subject name for a new request or supersedes the
2358 subject name in a given request. Formats that can be parsed are
2359 'CN=Some Name, OU=myOU, C=IT'
2361 'CN=Some Name/OU=myOU/C=IT'.
2363 Add options '-batch' and '-verbose' to 'openssl req'.
2364 [Massimiliano Pala <madwolf@hackmasters.net>]
2366 *) Introduce the possibility to access global variables through
2367 functions on platform were that's the best way to handle exporting
2368 global variables in shared libraries. To enable this functionality,
2369 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2370 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2371 is normally done by Configure or something similar).
2373 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2374 in the source file (foo.c) like this:
2376 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2377 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2379 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2380 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2382 OPENSSL_DECLARE_GLOBAL(int,foo);
2383 #define foo OPENSSL_GLOBAL_REF(foo)
2384 OPENSSL_DECLARE_GLOBAL(double,bar);
2385 #define bar OPENSSL_GLOBAL_REF(bar)
2387 The #defines are very important, and therefore so is including the
2388 header file everywhere where the defined globals are used.
2390 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2391 of ASN.1 items, but that structure is a bit different.
2393 The largest change is in util/mkdef.pl which has been enhanced with
2394 better and easier to understand logic to choose which symbols should
2395 go into the Windows .def files as well as a number of fixes and code
2396 cleanup (among others, algorithm keywords are now sorted
2397 lexicographically to avoid constant rewrites).
2400 *) In BN_div() keep a copy of the sign of 'num' before writing the
2401 result to 'rm' because if rm==num the value will be overwritten
2402 and produce the wrong result if 'num' is negative: this caused
2403 problems with BN_mod() and BN_nnmod().
2406 *) Function OCSP_request_verify(). This checks the signature on an
2407 OCSP request and verifies the signer certificate. The signer
2408 certificate is just checked for a generic purpose and OCSP request
2412 *) Add OCSP_check_validity() function to check the validity of OCSP
2413 responses. OCSP responses are prepared in real time and may only
2414 be a few seconds old. Simply checking that the current time lies
2415 between thisUpdate and nextUpdate max reject otherwise valid responses
2416 caused by either OCSP responder or client clock inaccuracy. Instead
2417 we allow thisUpdate and nextUpdate to fall within a certain period of
2418 the current time. The age of the response can also optionally be
2419 checked. Two new options -validity_period and -status_age added to
2423 *) If signature or public key algorithm is unrecognized print out its
2424 OID rather that just UNKNOWN.
2427 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2428 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2429 ID to be generated from the issuer certificate alone which can then be
2430 passed to OCSP_id_issuer_cmp().
2433 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2434 ASN1 modules to export functions returning ASN1_ITEM pointers
2435 instead of the ASN1_ITEM structures themselves. This adds several
2436 new macros which allow the underlying ASN1 function/structure to
2437 be accessed transparently. As a result code should not use ASN1_ITEM
2438 references directly (such as &X509_it) but instead use the relevant
2439 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2440 use of the new ASN1 code on platforms where exporting structures
2441 is problematical (for example in shared libraries) but exporting
2442 functions returning pointers to structures is not.
2445 *) Add support for overriding the generation of SSL/TLS session IDs.
2446 These callbacks can be registered either in an SSL_CTX or per SSL.
2447 The purpose of this is to allow applications to control, if they wish,
2448 the arbitrary values chosen for use as session IDs, particularly as it
2449 can be useful for session caching in multiple-server environments. A
2450 command-line switch for testing this (and any client code that wishes
2451 to use such a feature) has been added to "s_server".
2452 [Geoff Thorpe, Lutz Jaenicke]
2454 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2455 of the form '#if defined(...) || defined(...) || ...' and
2456 '#if !defined(...) && !defined(...) && ...'. This also avoids
2457 the growing number of special cases it was previously handling.
2460 *) Make all configuration macros available for application by making
2461 sure they are available in opensslconf.h, by giving them names starting
2462 with "OPENSSL_" to avoid conflicts with other packages and by making
2463 sure e_os2.h will cover all platform-specific cases together with
2465 Additionally, it is now possible to define configuration/platform-
2466 specific names (called "system identities"). In the C code, these
2467 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2468 macro with the name beginning with "OPENSSL_SYS_", which is determined
2469 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2473 *) New option -set_serial to 'req' and 'x509' this allows the serial
2474 number to use to be specified on the command line. Previously self
2475 signed certificates were hard coded with serial number 0 and the
2476 CA options of 'x509' had to use a serial number in a file which was
2480 *) New options to 'ca' utility to support V2 CRL entry extensions.
2481 Currently CRL reason, invalidity date and hold instruction are
2482 supported. Add new CRL extensions to V3 code and some new objects.
2485 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2486 disable standard block padding (aka PKCS#5 padding) in the EVP
2487 API, which was previously mandatory. This means that the data is
2488 not padded in any way and so the total length much be a multiple
2489 of the block size, otherwise an error occurs.
2492 *) Initial (incomplete) OCSP SSL support.
2495 *) New function OCSP_parse_url(). This splits up a URL into its host,
2496 port and path components: primarily to parse OCSP URLs. New -url
2497 option to ocsp utility.
2500 *) New nonce behavior. The return value of OCSP_check_nonce() now
2501 reflects the various checks performed. Applications can decide
2502 whether to tolerate certain situations such as an absent nonce
2503 in a response when one was present in a request: the ocsp application
2504 just prints out a warning. New function OCSP_add1_basic_nonce()
2505 this is to allow responders to include a nonce in a response even if
2506 the request is nonce-less.
2509 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2510 skipped when using openssl x509 multiple times on a single input file,
2511 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2514 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2515 set string type: to handle setting ASN1_TIME structures. Fix ca
2516 utility to correctly initialize revocation date of CRLs.
2519 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2520 the clients preferred ciphersuites and rather use its own preferences.
2521 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2522 Internet Explorer by ensuring unchanged hash method during stepup.
2523 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2526 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2527 to aes and add a new 'exist' option to print out symbols that don't
2531 *) Additional options to ocsp utility to allow flags to be set and
2532 additional certificates supplied.
2535 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2536 OCSP client a number of certificate to only verify the response
2540 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2541 handle the new API. Currently only ECB, CBC modes supported. Add new
2544 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2545 Encryption Standard (AES) Ciphersuites for Transport Layer
2546 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2547 not enabled by default and were not part of the "ALL" ciphersuite
2548 alias because they were not yet official; they could be
2549 explicitly requested by specifying the "AESdraft" ciphersuite
2550 group alias. In the final release of OpenSSL 0.9.7, the group
2551 alias is called "AES" and is part of "ALL".)
2552 [Ben Laurie, Steve Henson, Bodo Moeller]
2554 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2555 request to response.
2558 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2559 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2560 extract information from a certificate request. OCSP_response_create()
2561 creates a response and optionally adds a basic response structure.
2562 OCSP_basic_add1_status() adds a complete single response to a basic
2563 response and returns the OCSP_SINGLERESP structure just added (to allow
2564 extensions to be included for example). OCSP_basic_add1_cert() adds a
2565 certificate to a basic response and OCSP_basic_sign() signs a basic
2566 response with various flags. New helper functions ASN1_TIME_check()
2567 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2568 (converts ASN1_TIME to GeneralizedTime).
2571 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2572 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2573 structure from a certificate. X509_pubkey_digest() digests the public_key
2574 contents: this is used in various key identifiers.
2577 *) Make sk_sort() tolerate a NULL argument.
2578 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2580 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2581 passed by the function are trusted implicitly. If any of them signed the
2582 response then it is assumed to be valid and is not verified.
2585 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2586 to data. This was previously part of the PKCS7 ASN1 code. This
2587 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2588 [Steve Henson, reported by Kenneth R. Robinette
2589 <support@securenetterm.com>]
2591 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2592 routines: without these tracing memory leaks is very painful.
2593 Fix leaks in PKCS12 and PKCS7 routines.
2596 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2597 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2598 effectively meant GeneralizedTime would never be used. Now it
2599 is initialised to -1 but X509_time_adj() now has to check the value
2600 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2601 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2602 [Steve Henson, reported by Kenneth R. Robinette
2603 <support@securenetterm.com>]
2605 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2606 result in a zero length in the ASN1_INTEGER structure which was
2607 not consistent with the structure when d2i_ASN1_INTEGER() was used
2608 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2609 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2610 where it did not print out a minus for negative ASN1_INTEGER.
2613 *) Add summary printout to ocsp utility. The various functions which
2614 convert status values to strings have been renamed to:
2615 OCSP_response_status_str(), OCSP_cert_status_str() and
2616 OCSP_crl_reason_str() and are no longer static. New options
2617 to verify nonce values and to disable verification. OCSP response
2618 printout format cleaned up.
2621 *) Add additional OCSP certificate checks. These are those specified
2622 in RFC2560. This consists of two separate checks: the CA of the
2623 certificate being checked must either be the OCSP signer certificate
2624 or the issuer of the OCSP signer certificate. In the latter case the
2625 OCSP signer certificate must contain the OCSP signing extended key
2626 usage. This check is performed by attempting to match the OCSP
2627 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2628 in the OCSP_CERTID structures of the response.
2631 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2632 and related routines. This uses the standard OpenSSL certificate
2633 verify routines to perform initial checks (just CA validity) and
2634 to obtain the certificate chain. Then additional checks will be
2635 performed on the chain. Currently the root CA is checked to see
2636 if it is explicitly trusted for OCSP signing. This is used to set
2637 a root CA as a global signing root: that is any certificate that
2638 chains to that CA is an acceptable OCSP signing certificate.
2641 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2642 extensions from a separate configuration file.
2643 As when reading extensions from the main configuration file,
2644 the '-extensions ...' option may be used for specifying the
2646 [Massimiliano Pala <madwolf@comune.modena.it>]
2648 *) New OCSP utility. Allows OCSP requests to be generated or
2649 read. The request can be sent to a responder and the output
2650 parsed, outputed or printed in text form. Not complete yet:
2651 still needs to check the OCSP response validity.
2654 *) New subcommands for 'openssl ca':
2655 'openssl ca -status <serial>' prints the status of the cert with
2656 the given serial number (according to the index file).
2657 'openssl ca -updatedb' updates the expiry status of certificates
2659 [Massimiliano Pala <madwolf@comune.modena.it>]
2661 *) New '-newreq-nodes' command option to CA.pl. This is like
2662 '-newreq', but calls 'openssl req' with the '-nodes' option
2663 so that the resulting key is not encrypted.
2664 [Damien Miller <djm@mindrot.org>]
2666 *) New configuration for the GNU Hurd.
2667 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2669 *) Initial code to implement OCSP basic response verify. This
2670 is currently incomplete. Currently just finds the signer's
2671 certificate and verifies the signature on the response.
2674 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2675 value of OPENSSLDIR. This is available via the new '-d' option
2676 to 'openssl version', and is also included in 'openssl version -a'.
2679 *) Allowing defining memory allocation callbacks that will be given
2680 file name and line number information in additional arguments
2681 (a const char* and an int). The basic functionality remains, as
2682 well as the original possibility to just replace malloc(),
2683 realloc() and free() by functions that do not know about these
2684 additional arguments. To register and find out the current
2685 settings for extended allocation functions, the following
2686 functions are provided:
2688 CRYPTO_set_mem_ex_functions
2689 CRYPTO_set_locked_mem_ex_functions
2690 CRYPTO_get_mem_ex_functions
2691 CRYPTO_get_locked_mem_ex_functions
2693 These work the same way as CRYPTO_set_mem_functions and friends.
2694 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2695 extended allocation function is enabled.
2696 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2697 a conventional allocation function is enabled.
2698 [Richard Levitte, Bodo Moeller]
2700 *) Finish off removing the remaining LHASH function pointer casts.
2701 There should no longer be any prototype-casting required when using
2702 the LHASH abstraction, and any casts that remain are "bugs". See
2703 the callback types and macros at the head of lhash.h for details
2704 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2707 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2708 If /dev/[u]random devices are not available or do not return enough
2709 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2711 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2712 /etc/entropy will be queried once each in this sequence, quering stops
2713 when enough entropy was collected without querying more sockets.
2716 *) Change the Unix RAND_poll() variant to be able to poll several
2717 random devices, as specified by DEVRANDOM, until a sufficient amount
2718 of data has been collected. We spend at most 10 ms on each file
2719 (select timeout) and read in non-blocking mode. DEVRANDOM now
2720 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2721 (previously it was just the string "/dev/urandom"), so on typical
2722 platforms the 10 ms delay will never occur.
2723 Also separate out the Unix variant to its own file, rand_unix.c.
2724 For VMS, there's a currently-empty rand_vms.c.
2727 *) Move OCSP client related routines to ocsp_cl.c. These
2728 provide utility functions which an application needing
2729 to issue a request to an OCSP responder and analyse the
2730 response will typically need: as opposed to those which an
2731 OCSP responder itself would need which will be added later.
2733 OCSP_request_sign() signs an OCSP request with an API similar
2734 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2735 response. OCSP_response_get1_basic() extracts basic response
2736 from response. OCSP_resp_find_status(): finds and extracts status
2737 information from an OCSP_CERTID structure (which will be created
2738 when the request structure is built). These are built from lower
2739 level functions which work on OCSP_SINGLERESP structures but
2740 wont normally be used unless the application wishes to examine
2741 extensions in the OCSP response for example.
2743 Replace nonce routines with a pair of functions.
2744 OCSP_request_add1_nonce() adds a nonce value and optionally
2745 generates a random value. OCSP_check_nonce() checks the
2746 validity of the nonce in an OCSP response.
2749 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2750 This doesn't copy the supplied OCSP_CERTID and avoids the
2751 need to free up the newly created id. Change return type
2752 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2753 This can then be used to add extensions to the request.
2754 Deleted OCSP_request_new(), since most of its functionality
2755 is now in OCSP_REQUEST_new() (and the case insensitive name
2756 clash) apart from the ability to set the request name which
2757 will be added elsewhere.
2760 *) Update OCSP API. Remove obsolete extensions argument from
2761 various functions. Extensions are now handled using the new
2762 OCSP extension code. New simple OCSP HTTP function which
2763 can be used to send requests and parse the response.
2766 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2767 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2768 uses the special reorder version of SET OF to sort the attributes
2769 and reorder them to match the encoded order. This resolves a long
2770 standing problem: a verify on a PKCS7 structure just after signing
2771 it used to fail because the attribute order did not match the
2772 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2773 it uses the received order. This is necessary to tolerate some broken
2774 software that does not order SET OF. This is handled by encoding
2775 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2776 to produce the required SET OF.
2779 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2780 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2781 files to get correct declarations of the ASN.1 item variables.
2784 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2785 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2786 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2787 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2788 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2789 ASN1_ITEM and no wrapper functions.
2792 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2793 replace the old function pointer based I/O routines. Change most of
2794 the *_d2i_bio() and *_d2i_fp() functions to use these.
2797 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2798 lines, recognice more "algorithms" that can be deselected, and make
2799 it complain about algorithm deselection that isn't recognised.
2802 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2803 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2804 to use new functions. Add NO_ASN1_OLD which can be set to remove
2805 some old style ASN1 functions: this can be used to determine if old
2806 code will still work when these eventually go away.
2809 *) New extension functions for OCSP structures, these follow the
2810 same conventions as certificates and CRLs.
2813 *) New function X509V3_add1_i2d(). This automatically encodes and
2814 adds an extension. Its behaviour can be customised with various
2815 flags to append, replace or delete. Various wrappers added for
2816 certifcates and CRLs.
2819 *) Fix to avoid calling the underlying ASN1 print routine when
2820 an extension cannot be parsed. Correct a typo in the
2821 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2824 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2825 entries for variables.
2828 *) Add functionality to apps/openssl.c for detecting locking
2829 problems: As the program is single-threaded, all we have
2830 to do is register a locking callback using an array for
2831 storing which locks are currently held by the program.
2834 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2835 SSL_get_ex_data_X509_STORE_idx(), which is used in
2836 ssl_verify_cert_chain() and thus can be called at any time
2837 during TLS/SSL handshakes so that thread-safety is essential.
2838 Unfortunately, the ex_data design is not at all suited
2839 for multi-threaded use, so it probably should be abolished.
2842 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2843 [Broadcom, tweaked and integrated by Geoff Thorpe]
2845 *) Move common extension printing code to new function
2846 X509V3_print_extensions(). Reorganise OCSP print routines and
2847 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2850 *) New function X509_signature_print() to remove duplication in some
2854 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2855 set (this was treated exactly the same as SET OF previously). This
2856 is used to reorder the STACK representing the structure to match the
2857 encoding. This will be used to get round a problem where a PKCS7
2858 structure which was signed could not be verified because the STACK
2859 order did not reflect the encoded order.
2862 *) Reimplement the OCSP ASN1 module using the new code.
2865 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2866 for its ASN1 operations. The old style function pointers still exist
2867 for now but they will eventually go away.
2870 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2871 completely replaces the old ASN1 functionality with a table driven
2872 encoder and decoder which interprets an ASN1_ITEM structure describing
2873 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2874 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2875 has also been converted to the new form.
2878 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2879 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2880 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2881 for negative moduli.
2884 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2885 of not touching the result's sign bit.
2888 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2892 *) Changed the LHASH code to use prototypes for callbacks, and created
2893 macros to declare and implement thin (optionally static) functions
2894 that provide type-safety and avoid function pointer casting for the
2895 type-specific callbacks.
2898 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2900 [Veers Staats <staatsvr@asc.hpc.mil>,
2901 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2903 *) Reformat the FAQ so the different questions and answers can be divided
2904 in sections depending on the subject.
2907 *) Have the zlib compression code load ZLIB.DLL dynamically under
2911 *) New function BN_mod_sqrt for computing square roots modulo a prime
2912 (using the probabilistic Tonelli-Shanks algorithm unless
2913 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2914 be handled deterministically).
2915 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2917 *) Make BN_mod_inverse faster by explicitly handling small quotients
2918 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2919 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2922 *) New function BN_kronecker.
2925 *) Fix BN_gcd so that it works on negative inputs; the result is
2926 positive unless both parameters are zero.
2927 Previously something reasonably close to an infinite loop was
2928 possible because numbers could be growing instead of shrinking
2929 in the implementation of Euclid's algorithm.
2932 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2933 sign of the number in question.
2935 Fix BN_is_word(a,w) to work correctly for w == 0.
2937 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2938 because its test if the absolute value of 'a' equals 'w'.
2939 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2940 it exists mostly for use in the implementations of BN_is_zero(),
2941 BN_is_one(), and BN_is_word().
2944 *) New function BN_swap.
2947 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2948 the exponentiation functions are more likely to produce reasonable
2949 results on negative inputs.
2952 *) Change BN_mod_mul so that the result is always non-negative.
2953 Previously, it could be negative if one of the factors was negative;
2954 I don't think anyone really wanted that behaviour.
2957 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2958 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2959 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2960 and add new functions:
2969 BN_mod_lshift1_quick
2973 These functions always generate non-negative results.
2975 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2976 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2978 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2979 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2980 be reduced modulo m.
2981 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2984 The following entry accidentily appeared in the CHANGES file
2985 distributed with OpenSSL 0.9.7. The modifications described in
2986 it do *not* apply to OpenSSL 0.9.7.
2988 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2989 was actually never needed) and in BN_mul(). The removal in BN_mul()
2990 required a small change in bn_mul_part_recursive() and the addition
2991 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2992 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2993 bn_sub_words() and bn_add_words() except they take arrays with
2998 *) In 'openssl passwd', verify passwords read from the terminal
2999 unless the '-salt' option is used (which usually means that
3000 verification would just waste user's time since the resulting
3001 hash is going to be compared with some given password hash)
3002 or the new '-noverify' option is used.
3004 This is an incompatible change, but it does not affect
3005 non-interactive use of 'openssl passwd' (passwords on the command
3006 line, '-stdin' option, '-in ...' option) and thus should not
3010 *) Remove all references to RSAref, since there's no more need for it.
3013 *) Make DSO load along a path given through an environment variable
3014 (SHLIB_PATH) with shl_load().
3017 *) Constify the ENGINE code as a result of BIGNUM constification.
3018 Also constify the RSA code and most things related to it. In a
3019 few places, most notable in the depth of the ASN.1 code, ugly
3020 casts back to non-const were required (to be solved at a later
3024 *) Make it so the openssl application has all engines loaded by default.
3027 *) Constify the BIGNUM routines a little more.
3030 *) Add the following functions:
3032 ENGINE_load_cswift()
3034 ENGINE_load_atalla()
3036 ENGINE_load_builtin_engines()
3038 That way, an application can itself choose if external engines that
3039 are built-in in OpenSSL shall ever be used or not. The benefit is
3040 that applications won't have to be linked with libdl or other dso
3041 libraries unless it's really needed.
3043 Changed 'openssl engine' to load all engines on demand.
3044 Changed the engine header files to avoid the duplication of some
3045 declarations (they differed!).
3048 *) 'openssl engine' can now list capabilities.
3051 *) Better error reporting in 'openssl engine'.
3054 *) Never call load_dh_param(NULL) in s_server.
3057 *) Add engine application. It can currently list engines by name and
3058 identity, and test if they are actually available.
3061 *) Improve RPM specification file by forcing symbolic linking and making
3062 sure the installed documentation is also owned by root.root.
3063 [Damien Miller <djm@mindrot.org>]
3065 *) Give the OpenSSL applications more possibilities to make use of
3066 keys (public as well as private) handled by engines.
3069 *) Add OCSP code that comes from CertCo.
3072 *) Add VMS support for the Rijndael code.
3075 *) Added untested support for Nuron crypto accelerator.
3078 *) Add support for external cryptographic devices. This code was
3079 previously distributed separately as the "engine" branch.
3080 [Geoff Thorpe, Richard Levitte]
3082 *) Rework the filename-translation in the DSO code. It is now possible to
3083 have far greater control over how a "name" is turned into a filename
3084 depending on the operating environment and any oddities about the
3085 different shared library filenames on each system.
3088 *) Support threads on FreeBSD-elf in Configure.
3091 *) Fix for SHA1 assembly problem with MASM: it produces
3092 warnings about corrupt line number information when assembling
3093 with debugging information. This is caused by the overlapping
3095 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3098 NCONF_get_number() has no error checking at all. As a replacement,
3099 NCONF_get_number_e() is defined (_e for "error checking") and is
3100 promoted strongly. The old NCONF_get_number is kept around for
3101 binary backward compatibility.
3102 Make it possible for methods to load from something other than a BIO,
3103 by providing a function pointer that is given a name instead of a BIO.
3104 For example, this could be used to load configuration data from an
3108 *) Fix for non blocking accept BIOs. Added new I/O special reason
3109 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3110 with non blocking I/O was not possible because no retry code was
3111 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3115 *) Added the beginnings of Rijndael support.
3118 *) Fix for bug in DirectoryString mask setting. Add support for
3119 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3120 to allow certificate printing to more controllable, additional
3121 'certopt' option to 'x509' to allow new printing options to be
3125 *) Clean old EAY MD5 hack from e_os.h.
3128 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3130 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3131 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3132 [Joe Orton, Steve Henson]
3134 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3136 *) Fix additional bug revealed by the NISCC test suite:
3138 Stop bug triggering large recursion when presented with
3139 certain ASN.1 tags (CVE-2003-0851)
3142 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3144 *) Fix various bugs revealed by running the NISCC test suite:
3146 Stop out of bounds reads in the ASN1 code when presented with
3147 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3149 If verify callback ignores invalid public key errors don't try to check
3150 certificate signature with the NULL public key.
3154 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3155 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3159 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3160 extra data after the compression methods not only for TLS 1.0
3161 but also for SSL 3.0 (as required by the specification).
3162 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3164 *) Change X509_certificate_type() to mark the key as exported/exportable
3165 when it's 512 *bits* long, not 512 bytes.
3168 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3170 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3171 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3172 a protocol version number mismatch like a decryption error
3173 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3176 *) Turn on RSA blinding by default in the default implementation
3177 to avoid a timing attack. Applications that don't want it can call
3178 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3179 They would be ill-advised to do so in most cases.
3180 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3182 *) Change RSA blinding code so that it works when the PRNG is not
3183 seeded (in this case, the secret RSA exponent is abused as
3184 an unpredictable seed -- if it is not unpredictable, there
3185 is no point in blinding anyway). Make RSA blinding thread-safe
3186 by remembering the creator's thread ID in rsa->blinding and
3187 having all other threads use local one-time blinding factors
3188 (this requires more computation than sharing rsa->blinding, but
3189 avoids excessive locking; and if an RSA object is not shared
3190 between threads, blinding will still be very fast).
3193 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3195 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3196 via timing by performing a MAC computation even if incorrrect
3197 block cipher padding has been found. This is a countermeasure
3198 against active attacks where the attacker has to distinguish
3199 between bad padding and a MAC verification error. (CVE-2003-0078)
3201 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3202 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3203 Martin Vuagnoux (EPFL, Ilion)]
3205 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3207 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3208 memory from it's contents. This is done with a counter that will
3209 place alternating values in each byte. This can be used to solve
3210 two issues: 1) the removal of calls to memset() by highly optimizing
3211 compilers, and 2) cleansing with other values than 0, since those can
3212 be read through on certain media, for example a swap space on disk.
3215 *) Bugfix: client side session caching did not work with external caching,
3216 because the session->cipher setting was not restored when reloading
3217 from the external cache. This problem was masked, when
3218 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3219 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3222 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3223 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3224 [Zeev Lieber <zeev-l@yahoo.com>]
3226 *) Undo an undocumented change introduced in 0.9.6e which caused
3227 repeated calls to OpenSSL_add_all_ciphers() and
3228 OpenSSL_add_all_digests() to be ignored, even after calling
3232 *) Change the default configuration reader to deal with last line not
3233 being properly terminated.
3236 *) Change X509_NAME_cmp() so it applies the special rules on handling
3237 DN values that are of type PrintableString, as well as RDNs of type
3238 emailAddress where the value has the type ia5String.
3239 [stefank@valicert.com via Richard Levitte]
3241 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3242 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3243 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3244 the bitwise-OR of the two for use by the majority of applications
3245 wanting this behaviour, and update the docs. The documented
3246 behaviour and actual behaviour were inconsistent and had been
3247 changing anyway, so this is more a bug-fix than a behavioural
3249 [Geoff Thorpe, diagnosed by Nadav Har'El]
3251 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3252 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3255 *) Fix initialization code race conditions in
3256 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3257 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3258 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3259 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3260 ssl2_get_cipher_by_char(),
3261 ssl3_get_cipher_by_char().
3262 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3264 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3265 the cached sessions are flushed, as the remove_cb() might use ex_data
3266 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3267 (see [openssl.org #212]).
3268 [Geoff Thorpe, Lutz Jaenicke]
3270 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3271 length, instead of the encoding length to d2i_ASN1_OBJECT.
3274 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3276 *) [In 0.9.6g-engine release:]
3277 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3278 [Lynn Gazis <lgazis@rainbow.com>]
3280 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3282 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3283 and get fix the header length calculation.
3284 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3285 Alon Kantor <alonk@checkpoint.com> (and others),
3288 *) Use proper error handling instead of 'assertions' in buffer
3289 overflow checks added in 0.9.6e. This prevents DoS (the
3290 assertions could call abort()).
3291 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3293 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3295 *) Add various sanity checks to asn1_get_length() to reject
3296 the ASN1 length bytes if they exceed sizeof(long), will appear
3297 negative or the content length exceeds the length of the
3299 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3301 *) Fix cipher selection routines: ciphers without encryption had no flags
3302 for the cipher strength set and where therefore not handled correctly
3303 by the selection routines (PR #130).
3306 *) Fix EVP_dsa_sha macro.
3310 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3311 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3312 that was added in OpenSSL 0.9.6d.
3314 As the countermeasure turned out to be incompatible with some
3315 broken SSL implementations, the new option is part of SSL_OP_ALL.
3316 SSL_OP_ALL is usually employed when compatibility with weird SSL
3317 implementations is desired (e.g. '-bugs' option to 's_client' and
3318 's_server'), so the new option is automatically set in many
3322 *) Changes in security patch:
3324 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3325 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3326 Air Force Materiel Command, USAF, under agreement number
3329 *) Add various sanity checks to asn1_get_length() to reject
3330 the ASN1 length bytes if they exceed sizeof(long), will appear
3331 negative or the content length exceeds the length of the
3332 supplied buffer. (CVE-2002-0659)
3333 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3335 *) Assertions for various potential buffer overflows, not known to
3337 [Ben Laurie (CHATS)]
3339 *) Various temporary buffers to hold ASCII versions of integers were
3340 too small for 64 bit platforms. (CVE-2002-0655)
3341 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3343 *) Remote buffer overflow in SSL3 protocol - an attacker could
3344 supply an oversized session ID to a client. (CVE-2002-0656)
3345 [Ben Laurie (CHATS)]
3347 *) Remote buffer overflow in SSL2 protocol - an attacker could
3348 supply an oversized client master key. (CVE-2002-0656)
3349 [Ben Laurie (CHATS)]
3351 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3353 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3354 encoded as NULL) with id-dsa-with-sha1.
3355 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3357 *) Check various X509_...() return values in apps/req.c.
3358 [Nils Larsch <nla@trustcenter.de>]
3360 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3361 an end-of-file condition would erronously be flagged, when the CRLF
3362 was just at the end of a processed block. The bug was discovered when
3363 processing data through a buffering memory BIO handing the data to a
3364 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3365 <ptsekov@syntrex.com> and Nedelcho Stanev.
3368 *) Implement a countermeasure against a vulnerability recently found
3369 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3370 before application data chunks to avoid the use of known IVs
3371 with data potentially chosen by the attacker.
3374 *) Fix length checks in ssl3_get_client_hello().
3377 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3378 to prevent ssl3_read_internal() from incorrectly assuming that
3379 ssl3_read_bytes() found application data while handshake
3380 processing was enabled when in fact s->s3->in_read_app_data was
3381 merely automatically cleared during the initial handshake.
3382 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3384 *) Fix object definitions for Private and Enterprise: they were not
3385 recognized in their shortname (=lowercase) representation. Extend
3386 obj_dat.pl to issue an error when using undefined keywords instead
3387 of silently ignoring the problem (Svenning Sorensen
3388 <sss@sss.dnsalias.net>).
3391 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3392 generators, i.e. generators other than 2 and 5. (Previously, the
3393 code did not properly initialise the 'add' and 'rem' values to
3394 BN_generate_prime().)
3396 In the new general case, we do not insist that 'generator' is
3397 actually a primitive root: This requirement is rather pointless;
3398 a generator of the order-q subgroup is just as good, if not
3402 *) Map new X509 verification errors to alerts. Discovered and submitted by
3403 Tom Wu <tom@arcot.com>.
3406 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3407 returning non-zero before the data has been completely received
3408 when using non-blocking I/O.
3409 [Bodo Moeller; problem pointed out by John Hughes]
3411 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3412 [Ben Laurie, Lutz Jaenicke]
3414 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3415 Yoram Zahavi <YoramZ@gilian.com>).
3418 *) Add information about CygWin 1.3 and on, and preserve proper
3419 configuration for the versions before that.
3420 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3422 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3423 check whether we deal with a copy of a session and do not delete from
3424 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3425 <izhar@checkpoint.com>.
3428 *) Do not store session data into the internal session cache, if it
3429 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3430 flag is set). Proposed by Aslam <aslam@funk.com>.
3433 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3437 *) [In 0.9.6d-engine release:]
3438 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3439 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3441 *) Add the configuration target linux-s390x.
3442 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3444 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3445 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3446 variable as an indication that a ClientHello message has been
3447 received. As the flag value will be lost between multiple
3448 invocations of ssl3_accept when using non-blocking I/O, the
3449 function may not be aware that a handshake has actually taken
3450 place, thus preventing a new session from being added to the
3453 To avoid this problem, we now set s->new_session to 2 instead of
3454 using a local variable.
3455 [Lutz Jaenicke, Bodo Moeller]
3457 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3458 if the SSL_R_LENGTH_MISMATCH error is detected.
3459 [Geoff Thorpe, Bodo Moeller]
3461 *) New 'shared_ldflag' column in Configure platform table.
3464 *) Fix EVP_CIPHER_mode macro.
3465 ["Dan S. Camper" <dan@bti.net>]
3467 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3468 type, we must throw them away by setting rr->length to 0.
3469 [D P Chang <dpc@qualys.com>]
3471 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3473 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3474 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3475 worked incorrectly for those cases where range = 10..._2 and
3476 3*range is two bits longer than range.)
3479 *) Only add signing time to PKCS7 structures if it is not already
3483 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3484 OBJ_ld_ce should be OBJ_id_ce.
3485 Also some ip-pda OIDs in crypto/objects/objects.txt were
3486 incorrect (cf. RFC 3039).
3487 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3489 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3490 returns early because it has nothing to do.
3491 [Andy Schneider <andy.schneider@bjss.co.uk>]
3493 *) [In 0.9.6c-engine release:]
3494 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3495 [Andy Schneider <andy.schneider@bjss.co.uk>]
3497 *) [In 0.9.6c-engine release:]
3498 Add support for Cryptographic Appliance's keyserver technology.
3499 (Use engine 'keyclient')
3500 [Cryptographic Appliances and Geoff Thorpe]
3502 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3503 is called via tools/c89.sh because arguments have to be
3504 rearranged (all '-L' options must appear before the first object
3506 [Richard Shapiro <rshapiro@abinitio.com>]
3508 *) [In 0.9.6c-engine release:]
3509 Add support for Broadcom crypto accelerator cards, backported
3511 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3513 *) [In 0.9.6c-engine release:]
3514 Add support for SureWare crypto accelerator cards from
3515 Baltimore Technologies. (Use engine 'sureware')
3516 [Baltimore Technologies and Mark Cox]
3518 *) [In 0.9.6c-engine release:]
3519 Add support for crypto accelerator cards from Accelerated
3520 Encryption Processing, www.aep.ie. (Use engine 'aep')
3521 [AEP Inc. and Mark Cox]
3523 *) Add a configuration entry for gcc on UnixWare.
3524 [Gary Benson <gbenson@redhat.com>]
3526 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3527 messages are stored in a single piece (fixed-length part and
3528 variable-length part combined) and fix various bugs found on the way.
3531 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3532 instead. BIO_gethostbyname() does not know what timeouts are
3533 appropriate, so entries would stay in cache even when they have
3535 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3537 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3538 faced with a pathologically small ClientHello fragment that does
3539 not contain client_version: Instead of aborting with an error,
3540 simply choose the highest available protocol version (i.e.,
3541 TLS 1.0 unless it is disabled). In practice, ClientHello
3542 messages are never sent like this, but this change gives us
3543 strictly correct behaviour at least for TLS.
3546 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3547 never resets s->method to s->ctx->method when called from within
3548 one of the SSL handshake functions.
3549 [Bodo Moeller; problem pointed out by Niko Baric]
3551 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3552 (sent using the client's version number) if client_version is
3553 smaller than the protocol version in use. Also change
3554 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3555 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3556 the client will at least see that alert.
3559 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3563 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3564 client receives HelloRequest while in a handshake.
3565 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3567 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3568 should end in 'break', not 'goto end' which circuments various
3569 cleanups done in state SSL_ST_OK. But session related stuff
3570 must be disabled for SSL_ST_OK in the case that we just sent a
3573 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3574 before just sending a HelloRequest.
3575 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3577 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3578 reveal whether illegal block cipher padding was found or a MAC
3579 verification error occured. (Neither SSLerr() codes nor alerts
3580 are directly visible to potential attackers, but the information
3581 may leak via logfiles.)
3583 Similar changes are not required for the SSL 2.0 implementation
3584 because the number of padding bytes is sent in clear for SSL 2.0,
3585 and the extra bytes are just ignored. However ssl/s2_pkt.c
3586 failed to verify that the purported number of padding bytes is in
3590 *) Add OpenUNIX-8 support including shared libraries
3591 (Boyd Lynn Gerber <gerberb@zenez.com>).
3594 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3595 'wristwatch attack' using huge encoding parameters (cf.
3596 James H. Manger's CRYPTO 2001 paper). Note that the
3597 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3598 encoding parameters and hence was not vulnerable.
3601 *) BN_sqr() bug fix.
3602 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3604 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3605 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3606 followed by modular reduction.
3607 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3609 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3610 equivalent based on BN_pseudo_rand() instead of BN_rand().
3613 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3614 This function was broken, as the check for a new client hello message
3615 to handle SGC did not allow these large messages.
3616 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3619 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3622 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3623 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3626 *) Rework the configuration and shared library support for Tru64 Unix.
3627 The configuration part makes use of modern compiler features and
3628 still retains old compiler behavior for those that run older versions
3629 of the OS. The shared library support part includes a variant that
3630 uses the RPATH feature, and is available through the special
3631 configuration target "alpha-cc-rpath", which will never be selected
3633 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3635 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3636 with the same message size as in ssl3_get_certificate_request().
3637 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3638 messages might inadvertently be reject as too long.
3639 [Petr Lampa <lampa@fee.vutbr.cz>]
3641 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3644 *) Modified SSL library such that the verify_callback that has been set
3645 specificly for an SSL object with SSL_set_verify() is actually being
3646 used. Before the change, a verify_callback set with this function was
3647 ignored and the verify_callback() set in the SSL_CTX at the time of
3648 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3649 to allow the necessary settings.
3652 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3653 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3654 done automatically (in contradiction to the requirements of the C
3655 standard). This made problems when used from OpenSSH.
3658 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3659 dh->length and always used
3661 BN_rand_range(priv_key, dh->p).
3663 BN_rand_range() is not necessary for Diffie-Hellman, and this
3664 specific range makes Diffie-Hellman unnecessarily inefficient if
3665 dh->length (recommended exponent length) is much smaller than the
3666 length of dh->p. We could use BN_rand_range() if the order of
3667 the subgroup was stored in the DH structure, but we only have
3672 BN_rand(priv_key, l, ...)
3674 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3680 RSA_eay_public_encrypt
3681 RSA_eay_private_decrypt
3682 RSA_eay_private_encrypt (signing)
3683 RSA_eay_public_decrypt (signature verification)
3685 (default implementations for RSA_public_encrypt,
3686 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3687 always reject numbers >= n.
3690 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3691 to synchronize access to 'locking_thread'. This is necessary on
3692 systems where access to 'locking_thread' (an 'unsigned long'
3693 variable) is not atomic.
3696 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3697 *before* setting the 'crypto_lock_rand' flag. The previous code had
3698 a race condition if 0 is a valid thread ID.
3699 [Travis Vitek <vitek@roguewave.com>]
3701 *) Add support for shared libraries under Irix.
3702 [Albert Chin-A-Young <china@thewrittenword.com>]
3704 *) Add configuration option to build on Linux on both big-endian and
3706 [Ralf Baechle <ralf@uni-koblenz.de>]
3708 *) Add the possibility to create shared libraries on HP-UX.
3711 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3713 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3714 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3715 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3716 PRNG state recovery was possible based on the output of
3717 one PRNG request appropriately sized to gain knowledge on
3718 'md' followed by enough consecutive 1-byte PRNG requests
3719 to traverse all of 'state'.
3721 1. When updating 'md_local' (the current thread's copy of 'md')
3722 during PRNG output generation, hash all of the previous
3723 'md_local' value, not just the half used for PRNG output.
3725 2. Make the number of bytes from 'state' included into the hash
3726 independent from the number of PRNG bytes requested.
3728 The first measure alone would be sufficient to avoid
3729 Markku-Juhani's attack. (Actually it had never occurred
3730 to me that the half of 'md_local' used for chaining was the
3731 half from which PRNG output bytes were taken -- I had always
3732 assumed that the secret half would be used.) The second
3733 measure makes sure that additional data from 'state' is never
3734 mixed into 'md_local' in small portions; this heuristically
3735 further strengthens the PRNG.
3738 *) Fix crypto/bn/asm/mips3.s.
3741 *) When only the key is given to "enc", the IV is undefined. Print out
3742 an error message in this case.
3745 *) Handle special case when X509_NAME is empty in X509 printing routines.
3748 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3749 positive and less than q.
3752 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3753 used: it isn't thread safe and the add_lock_callback should handle
3755 [Paul Rose <Paul.Rose@bridge.com>]
3757 *) Verify that incoming data obeys the block size in
3758 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3762 [Ulf Möller, Bodo Möller]
3764 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3765 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3766 when fixing the server behaviour for backwards-compatible 'client
3767 hello' messages. (Note that the attack is impractical against
3768 SSL 3.0 and TLS 1.0 anyway because length and version checking
3769 means that the probability of guessing a valid ciphertext is
3770 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3773 Before 0.9.5, the countermeasure (hide the error by generating a
3774 random 'decryption result') did not work properly because
3775 ERR_clear_error() was missing, meaning that SSL_get_error() would
3776 detect the supposedly ignored error.
3778 Both problems are now fixed.
3781 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3782 (previously it was 1024).
3785 *) Fix for compatibility mode trust settings: ignore trust settings
3786 unless some valid trust or reject settings are present.
3789 *) Fix for blowfish EVP: its a variable length cipher.
3792 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3793 parameters in DSA public key structures and return an error in the
3794 DSA routines if parameters are absent.
3797 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3798 in the current directory if neither $RANDFILE nor $HOME was set.
3799 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3800 caused some confusion to Windows users who haven't defined $HOME.
3801 Thus RAND_file_name() is changed again: e_os.h can define a
3802 DEFAULT_HOME, which will be used if $HOME is not set.
3803 For Windows, we use "C:"; on other platforms, we still require
3804 environment variables.
3806 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3807 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3808 having multiple threads call RAND_poll() concurrently.
3811 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3812 combination of a flag and a thread ID variable.
3813 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3814 flag), *other* threads can enter ssleay_add_bytes without obeying
3815 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3816 that they do not hold after the first thread unsets add_do_not_lock).
3819 *) Change bctest again: '-x' expressions are not available in all
3823 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3825 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3826 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3828 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3829 the default extension for executables, if any. Also, make the perl
3830 scripts that use symlink() to test if it really exists and use "cp"
3831 if it doesn't. All this made OpenSSL compilable and installable in
3835 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3836 If SEQUENCE is length is indefinite just set c->slen to the total
3837 amount of data available.
3838 [Steve Henson, reported by shige@FreeBSD.org]
3839 [This change does not apply to 0.9.7.]
3841 *) Change bctest to avoid here-documents inside command substitution
3842 (workaround for FreeBSD /bin/sh bug).
3843 For compatibility with Ultrix, avoid shell functions (introduced
3844 in the bctest version that searches along $PATH).
3847 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3848 with des_encrypt() defined on some operating systems, like Solaris
3852 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3853 On the Importance of Eliminating Errors in Cryptographic
3854 Computations, J. Cryptology 14 (2001) 2, 101-119,
3855 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3858 *) MIPS assembler BIGNUM division bug fix.
3861 *) Disabled incorrect Alpha assembler code.
3864 *) Fix PKCS#7 decode routines so they correctly update the length
3865 after reading an EOC for the EXPLICIT tag.
3867 [This change does not apply to 0.9.7.]
3869 *) Fix bug in PKCS#12 key generation routines. This was triggered
3870 if a 3DES key was generated with a 0 initial byte. Include
3871 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3872 (but broken) behaviour.
3875 *) Enhance bctest to search for a working bc along $PATH and print
3877 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3879 *) Fix memory leaks in err.c: free err_data string if necessary;
3880 don't write to the wrong index in ERR_set_error_data.
3883 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3887 *) Replace rdtsc with _emit statements for VC++ version 5.
3888 [Jeremy Cooper <jeremy@baymoo.org>]
3890 *) Make it possible to reuse SSLv2 sessions.
3893 *) In copy_email() check for >= 0 as a return value for
3894 X509_NAME_get_index_by_NID() since 0 is a valid index.
3895 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3897 *) Avoid coredump with unsupported or invalid public keys by checking if
3898 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3899 PKCS7_verify() fails with non detached data.
3902 *) Don't use getenv in library functions when run as setuid/setgid.
3903 New function OPENSSL_issetugid().
3906 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3907 due to incorrect handling of multi-threading:
3909 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3911 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3913 3. Count how many times MemCheck_off() has been called so that
3914 nested use can be treated correctly. This also avoids
3915 inband-signalling in the previous code (which relied on the
3916 assumption that thread ID 0 is impossible).
3919 *) Add "-rand" option also to s_client and s_server.
3922 *) Fix CPU detection on Irix 6.x.
3923 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3924 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3926 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3929 [This change does not apply to 0.9.7.]
3931 *) Use the cached encoding of an X509_NAME structure rather than
3932 copying it. This is apparently the reason for the libsafe "errors"
3933 but the code is actually correct.
3936 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3937 Bleichenbacher's DSA attack.
3938 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3939 to be set and top=0 forces the highest bit to be set; top=-1 is new
3940 and leaves the highest bit random.
3941 [Ulf Moeller, Bodo Moeller]
3943 *) In the NCONF_...-based implementations for CONF_... queries
3944 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3945 a temporary CONF structure with the data component set to NULL
3946 (which gives segmentation faults in lh_retrieve).
3947 Instead, use NULL for the CONF pointer in CONF_get_string and
3948 CONF_get_number (which may use environment variables) and directly
3949 return NULL from CONF_get_section.
3952 *) Fix potential buffer overrun for EBCDIC.
3955 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3956 keyUsage if basicConstraints absent for a CA.
3959 *) Make SMIME_write_PKCS7() write mail header values with a format that
3960 is more generally accepted (no spaces before the semicolon), since
3961 some programs can't parse those values properly otherwise. Also make
3962 sure BIO's that break lines after each write do not create invalid
3966 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3967 macros previously used would not encode an empty SEQUENCE OF
3968 and break the signature.
3970 [This change does not apply to 0.9.7.]
3972 *) Zero the premaster secret after deriving the master secret in
3976 *) Add some EVP_add_digest_alias registrations (as found in
3977 OpenSSL_add_all_digests()) to SSL_library_init()
3978 aka OpenSSL_add_ssl_algorithms(). This provides improved
3979 compatibility with peers using X.509 certificates
3980 with unconventional AlgorithmIdentifier OIDs.
3983 *) Fix for Irix with NO_ASM.
3984 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3986 *) ./config script fixes.
3987 [Ulf Moeller, Richard Levitte]
3989 *) Fix 'openssl passwd -1'.
3992 *) Change PKCS12_key_gen_asc() so it can cope with non null
3993 terminated strings whose length is passed in the passlen
3994 parameter, for example from PEM callbacks. This was done
3995 by adding an extra length parameter to asc2uni().
3996 [Steve Henson, reported by <oddissey@samsung.co.kr>]
3998 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
3999 call failed, free the DSA structure.
4002 *) Fix to uni2asc() to cope with zero length Unicode strings.
4003 These are present in some PKCS#12 files.
4006 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
4007 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
4008 when writing a 32767 byte record.
4009 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
4011 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
4012 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
4014 (RSA objects have a reference count access to which is protected
4015 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
4016 so they are meant to be shared between threads.)
4017 [Bodo Moeller, Geoff Thorpe; original patch submitted by
4018 "Reddie, Steven" <Steven.Reddie@ca.com>]
4020 *) Fix a deadlock in CRYPTO_mem_leaks().
4023 *) Use better test patterns in bntest.
4026 *) rand_win.c fix for Borland C.
4029 *) BN_rshift bugfix for n == 0.
4032 *) Add a 'bctest' script that checks for some known 'bc' bugs
4033 so that 'make test' does not abort just because 'bc' is broken.
4036 *) Store verify_result within SSL_SESSION also for client side to
4037 avoid potential security hole. (Re-used sessions on the client side
4038 always resulted in verify_result==X509_V_OK, not using the original
4039 result of the server certificate verification.)
4042 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
4043 SSL3_RT_APPLICATION_DATA, return 0.
4044 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
4048 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
4049 releases, have been re-implemented by renaming the previous
4050 implementations of ssl2_read and ssl3_read to ssl2_read_internal
4051 and ssl3_read_internal, respectively, and adding 'peek' parameters
4052 to them. The new ssl[23]_{read,peek} functions are calls to
4053 ssl[23]_read_internal with the 'peek' flag set appropriately.
4054 A 'peek' parameter has also been added to ssl3_read_bytes, which
4055 does the actual work for ssl3_read_internal.
4058 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
4059 the method-specific "init()" handler. Also clean up ex_data after
4060 calling the method-specific "finish()" handler. Previously, this was
4061 happening the other way round.
4064 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
4065 The previous value, 12, was not always sufficient for BN_mod_exp().
4068 *) Make sure that shared libraries get the internal name engine with
4069 the full version number and not just 0. This should mark the
4070 shared libraries as not backward compatible. Of course, this should
4071 be changed again when we can guarantee backward binary compatibility.
4074 *) Fix typo in get_cert_by_subject() in by_dir.c
4075 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
4077 *) Rework the system to generate shared libraries:
4079 - Make note of the expected extension for the shared libraries and
4080 if there is a need for symbolic links from for example libcrypto.so.0
4081 to libcrypto.so.0.9.7. There is extended info in Configure for
4084 - Make as few rebuilds of the shared libraries as possible.
4086 - Still avoid linking the OpenSSL programs with the shared libraries.
4088 - When installing, install the shared libraries separately from the
4092 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
4094 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
4095 and not in SSL_clear because the latter is also used by the
4096 accept/connect functions; previously, the settings made by
4097 SSL_set_read_ahead would be lost during the handshake.
4098 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
4100 *) Correct util/mkdef.pl to be selective about disabled algorithms.
4101 Previously, it would create entries for disableed algorithms no
4105 *) Added several new manual pages for SSL_* function.
4108 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
4110 *) In ssl23_get_client_hello, generate an error message when faced
4111 with an initial SSL 3.0/TLS record that is too small to contain the
4112 first two bytes of the ClientHello message, i.e. client_version.
4113 (Note that this is a pathologic case that probably has never happened
4114 in real life.) The previous approach was to use the version number
4115 from the record header as a substitute; but our protocol choice
4116 should not depend on that one because it is not authenticated
4117 by the Finished messages.
4120 *) More robust randomness gathering functions for Windows.
4121 [Jeffrey Altman <jaltman@columbia.edu>]
4123 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
4124 not set then we don't setup the error code for issuer check errors
4125 to avoid possibly overwriting other errors which the callback does
4126 handle. If an application does set the flag then we assume it knows
4127 what it is doing and can handle the new informational codes
4131 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
4132 a general "ANY" type, as such it should be able to decode anything
4133 including tagged types. However it didn't check the class so it would
4134 wrongly interpret tagged types in the same way as their universal
4135 counterpart and unknown types were just rejected. Changed so that the
4136 tagged and unknown types are handled in the same way as a SEQUENCE:
4137 that is the encoding is stored intact. There is also a new type
4138 "V_ASN1_OTHER" which is used when the class is not universal, in this
4139 case we have no idea what the actual type is so we just lump them all
4143 *) On VMS, stdout may very well lead to a file that is written to
4144 in a record-oriented fashion. That means that every write() will
4145 write a separate record, which will be read separately by the
4146 programs trying to read from it. This can be very confusing.
4148 The solution is to put a BIO filter in the way that will buffer
4149 text until a linefeed is reached, and then write everything a
4150 line at a time, so every record written will be an actual line,
4151 not chunks of lines and not (usually doesn't happen, but I've
4152 seen it once) several lines in one record. BIO_f_linebuffer() is
4155 Currently, it's a VMS-only method, because that's where it has
4156 been tested well enough.
4159 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
4160 it can return incorrect results.
4161 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
4162 but it was in 0.9.6-beta[12].)
4165 *) Disable the check for content being present when verifying detached
4166 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
4167 include zero length content when signing messages.
4170 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
4171 BIO_ctrl (for BIO pairs).
4174 *) Add DSO method for VMS.
4177 *) Bug fix: Montgomery multiplication could produce results with the
4181 *) Add RPM specification openssl.spec and modify it to build three
4182 packages. The default package contains applications, application
4183 documentation and run-time libraries. The devel package contains
4184 include files, static libraries and function documentation. The
4185 doc package contains the contents of the doc directory. The original
4186 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
4189 *) Add a large number of documentation files for many SSL routines.
4190 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
4192 *) Add a configuration entry for Sony News 4.
4193 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
4195 *) Don't set the two most significant bits to one when generating a
4196 random number < q in the DSA library.
4199 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
4200 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
4201 the underlying transport is blocking) if a handshake took place.
4202 (The default behaviour is needed by applications such as s_client
4203 and s_server that use select() to determine when to use SSL_read;
4204 but for applications that know in advance when to expect data, it
4205 just makes things more complicated.)
4208 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
4212 *) Add a few more EBCDIC conditionals that make `req' and `x509'
4213 work better on such systems.
4214 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
4216 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
4217 Update PKCS12_parse() so it copies the friendlyName and the
4218 keyid to the certificates aux info.
4221 *) Fix bug in PKCS7_verify() which caused an infinite loop
4222 if there was more than one signature.
4223 [Sven Uszpelkat <su@celocom.de>]
4225 *) Major change in util/mkdef.pl to include extra information
4226 about each symbol, as well as presentig variables as well
4227 as functions. This change means that there's n more need
4228 to rebuild the .num files when some algorithms are excluded.
4231 *) Allow the verify time to be set by an application,
4232 rather than always using the current time.
4235 *) Phase 2 verify code reorganisation. The certificate
4236 verify code now looks up an issuer certificate by a
4237 number of criteria: subject name, authority key id
4238 and key usage. It also verifies self signed certificates
4239 by the same criteria. The main comparison function is
4240 X509_check_issued() which performs these checks.
4242 Lot of changes were necessary in order to support this
4243 without completely rewriting the lookup code.
4245 Authority and subject key identifier are now cached.
4247 The LHASH 'certs' is X509_STORE has now been replaced
4248 by a STACK_OF(X509_OBJECT). This is mainly because an
4249 LHASH can't store or retrieve multiple objects with
4250 the same hash value.
4252 As a result various functions (which were all internal
4253 use only) have changed to handle the new X509_STORE
4254 structure. This will break anything that messed round
projects / openssl.git / blob