5 Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
7 *) Reduce the chances of duplicate issuer name and serial numbers (in
8 violation of RFC3280) using the OpenSSL certificate creation utilities.
9 This is done by creating a random 64 bit value for the initial serial
10 number when a serial number file is created or when a self signed
11 certificate is created using 'openssl req -x509'. The initial serial
12 number file is now moved from CA.pl to the 'ca' utility with a new
13 option -create_serial.
16 *) Reduced header interdepencies by declaring more opaque objects in
17 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
18 give fewer recursive includes, which could break lazy source code - so
19 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
20 developers should define this symbol when building and using openssl to
21 ensure they track the recommended behaviour, interfaces, [etc], but
22 backwards-compatible behaviour prevails when this isn't defined.
25 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
28 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
29 This will generate a random key of the appropriate length based on the
30 cipher context. The EVP_CIPHER can provide its own random key generation
31 routine to support keys of a specific form. This is used in the des and
32 3des routines to generate a key of the correct parity. Update S/MIME
33 code to use new functions and hence generate correct parity DES keys.
34 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
35 valid (weak or incorrect parity).
38 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
39 as looking them up. This is useful when the verified structure may contain
40 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
41 present unless the new PKCS7_NO_CRL flag is asserted.
44 *) Extend ASN1 oid configuration module. It now additionally accepts the
47 shortName = some long name, 1.2.3.4
50 *) Reimplemented the BN_CTX implementation. There is now no more static
51 limitation on the number of variables it can handle nor the depth of the
52 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
53 information can now expand as required, and rather than having a single
54 static array of bignums, BN_CTX now uses a linked-list of such arrays
55 allowing it to expand on demand whilst maintaining the usefulness of
59 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
60 to allow all RSA operations to function using a single BN_CTX.
63 *) Preliminary support for certificate policy evaluation and checking. This
64 is initially intended to pass the tests outlined in "Conformance Testing
65 of Relying Party Client Certificate Path Processing Logic" v1.07.
68 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
69 remained unused and not that useful. A variety of other little bignum
70 tweaks and fixes have also been made continuing on from the audit (see
74 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
75 associated ASN1, EVP and SSL functions and old ASN1 macros.
78 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
79 and this should never fail. So the return value from the use of
80 BN_set_word() (which can fail due to needless expansion) is now deprecated;
81 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
84 *) BN_CTX_get() should return zero-valued bignums, providing the same
85 initialised value as BN_new().
86 [Geoff Thorpe, suggested by Ulf Möller]
88 *) Support for inhibitAnyPolicy certificate extension.
91 *) An audit of the BIGNUM code is underway, for which debugging code is
92 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
93 is considered valid when processing BIGNUMs, and causes execution to
94 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
95 further steps are taken to deliberately pollute unused data in BIGNUM
96 structures to try and expose faulty code further on. For now, openssl will
97 (in its default mode of operation) continue to tolerate the inconsistent
98 forms that it has tolerated in the past, but authors and packagers should
99 consider trying openssl and their own applications when compiled with
100 these debugging symbols defined. It will help highlight potential bugs in
101 their own code, and will improve the test coverage for OpenSSL itself. At
102 some point, these tighter rules will become openssl's default to improve
103 maintainability, though the assert()s and other overheads will remain only
104 in debugging configurations. See bn.h for more details.
105 [Geoff Thorpe, Nils Larsch, Ulf Möller]
107 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
108 that can only be obtained through BN_CTX_new() (which implicitly
109 initialises it). The presence of this function only made it possible
110 to overwrite an existing structure (and cause memory leaks).
113 *) Because of the callback-based approach for implementing LHASH as a
114 template type, lh_insert() adds opaque objects to hash-tables and
115 lh_doall() or lh_doall_arg() are typically used with a destructor callback
116 to clean up those corresponding objects before destroying the hash table
117 (and losing the object pointers). So some over-zealous constifications in
118 LHASH have been relaxed so that lh_insert() does not take (nor store) the
119 objects as "const" and the lh_doall[_arg] callback wrappers are not
120 prototyped to have "const" restrictions on the object pointers they are
121 given (and so aren't required to cast them away any more).
124 *) The tmdiff.h API was so ugly and minimal that our own timing utility
125 (speed) prefers to use its own implementation. The two implementations
126 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
127 its object type properly exposed (MS_TM) instead of casting to/from "char
128 *". This may still change yet if someone realises MS_TM and "ms_time_***"
129 aren't necessarily the greatest nomenclatures - but this is what was used
130 internally to the implementation so I've used that for now.
133 *) Ensure that deprecated functions do not get compiled when
134 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
135 the self-tests were still using deprecated key-generation functions so
136 these have been updated also.
139 *) Reorganise PKCS#7 code to separate the digest location functionality
140 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
141 New function PKCS7_set_digest() to set the digest type for PKCS#7
142 digestedData type. Add additional code to correctly generate the
143 digestedData type and add support for this type in PKCS7 initialization
147 *) New function PKCS7_set0_type_other() this initializes a PKCS7
148 structure of type "other".
151 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
152 sure the loop does correctly stop and breaking ("division by zero")
153 modulus operations are not performed. The (pre-generated) prime
154 table crypto/bn/bn_prime.h was already correct, but it could not be
155 re-generated on some platforms because of the "division by zero"
156 situation in the script.
157 [Ralf S. Engelschall]
159 *) Update support for ECC-based TLS ciphersuites according to
160 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
161 SHA-1 now is only used for "small" curves (where the
162 representation of a field element takes up to 24 bytes); for
163 larger curves, the field element resulting from ECDH is directly
164 used as premaster secret.
165 [Douglas Stebila (Sun Microsystems Laboratories)]
167 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
168 curve secp160r1 to the tests.
169 [Douglas Stebila (Sun Microsystems Laboratories)]
171 *) Add the possibility to load symbols globally with DSO.
172 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
174 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
175 control of the error stack.
178 *) Add support for STORE in ENGINE.
181 *) Add the STORE type. The intention is to provide a common interface
182 to certificate and key stores, be they simple file-based stores, or
183 HSM-type store, or LDAP stores, or...
184 NOTE: The code is currently UNTESTED and isn't really used anywhere.
187 *) Add a generic structure called OPENSSL_ITEM. This can be used to
188 pass a list of arguments to any function as well as provide a way
189 for a function to pass data back to the caller.
192 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
193 works like BUF_strdup() but can be used to duplicate a portion of
194 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
198 *) Add the function sk_find_ex() which works like sk_find(), but will
199 return an index to an element even if an exact match couldn't be
200 found. The index is guaranteed to point at the element where the
201 searched-for key would be inserted to preserve sorting order.
204 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
205 takes an extra flags argument for optional functionality. Currently,
206 the following flags are defined:
208 OBJ_BSEARCH_VALUE_ON_NOMATCH
209 This one gets OBJ_bsearch_ex() to return a pointer to the first
210 element where the comparing function returns a negative or zero
213 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
214 This one gets OBJ_bsearch_ex() to return a pointer to the first
215 element where the comparing function returns zero. This is useful
216 if there are more than one element where the comparing function
220 *) Make it possible to create self-signed certificates with 'openssl ca'
221 in such a way that the self-signed certificate becomes part of the
222 CA database and uses the same mechanisms for serial number generation
223 as all other certificate signing. The new flag '-selfsign' enables
224 this functionality. Adapt CA.sh and CA.pl.in.
227 *) Add functionality to check the public key of a certificate request
228 against a given private. This is useful to check that a certificate
229 request can be signed by that key (self-signing).
232 *) Make it possible to have multiple active certificates with the same
233 subject in the CA index file. This is done only if the keyword
234 'unique_subject' is set to 'no' in the main CA section (default
235 if 'CA_default') of the configuration file. The value is saved
236 with the database itself in a separate index attribute file,
237 named like the index file with '.attr' appended to the name.
240 *) Generate muti valued AVAs using '+' notation in config files for
244 *) Support for nameConstraints certificate extension.
247 *) Support for policyConstraints certificate extension.
250 *) Support for policyMappings certificate extension.
253 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
254 ENGINE as defaults for all supported algorithms irrespective of
255 the 'flags' parameter. 'flags' is now honoured, so applications
256 should make sure they are passing it correctly.
259 *) Make sure the default DSA_METHOD implementation only uses its
260 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
261 and change its own handlers to be NULL so as to remove unnecessary
262 indirection. This lets alternative implementations fallback to the
263 default implementation more easily.
266 *) Support for directoryName in GeneralName related extensions
270 *) Make it possible to link applications using Makefile.shared.
271 Make that possible even when linking against static libraries!
274 *) Support for single pass processing for S/MIME signing. This now
275 means that S/MIME signing can be done from a pipe, in addition
276 cleartext signing (multipart/signed type) is effectively streaming
277 and the signed data does not need to be all held in memory.
279 This is done with a new flag PKCS7_STREAM. When this flag is set
280 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
281 is done after the data is output (and digests calculated) in
285 *) Add full support for -rpath/-R, both in shared libraries and
286 applications, at least on the platforms where it's known how
290 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
291 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
292 will now compute a table of multiples of the generator that
293 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
294 faster (notably in the case of a single point multiplication,
296 [Nils Larsch, Bodo Moeller]
298 *) IPv6 support for certificate extensions. The various extensions
299 which use the IP:a.b.c.d can now take IPv6 addresses using the
300 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
304 *) Added an ENGINE that implements RSA by performing private key
305 exponentiations with the GMP library. The conversions to and from
306 GMP's mpz_t format aren't optimised nor are any montgomery forms
307 cached, and on x86 it appears OpenSSL's own performance has caught up.
308 However there are likely to be other architectures where GMP could
309 provide a boost. This ENGINE is not built in by default, but it can be
310 specified at Configure time and should be accompanied by the necessary
311 linker additions, eg;
312 ./config -DOPENSSL_USE_GMP -lgmp
315 *) "openssl engine" will not display ENGINE/DSO load failure errors when
316 testing availability of engines with "-t" - the old behaviour is
317 produced by increasing the feature's verbosity with "-tt".
320 *) ECDSA routines: under certain error conditions uninitialized BN objects
321 could be freed. Solution: make sure initialization is performed early
322 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
326 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
327 and DH_METHOD (eg. by ENGINE implementations) to override the normal
328 software implementations. For DSA and DH, parameter generation can
329 also be overriden by providing the appropriate method callbacks.
332 *) Change the "progress" mechanism used in key-generation and
333 primality testing to functions that take a new BN_GENCB pointer in
334 place of callback/argument pairs. The new API functions have "_ex"
335 postfixes and the older functions are reimplemented as wrappers for
336 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
337 declarations of the old functions to help (graceful) attempts to
338 migrate to the new functions. Also, the new key-generation API
339 functions operate on a caller-supplied key-structure and return
340 success/failure rather than returning a key or NULL - this is to
341 help make "keygen" another member function of RSA_METHOD etc.
343 Example for using the new callback interface:
345 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
349 BN_GENCB_set(&my_cb, my_callback, my_arg);
351 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
352 /* For the meaning of a, b in calls to my_callback(), see the
353 * documentation of the function that calls the callback.
354 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
355 * my_callback should return 1 if it wants BN_is_prime_ex()
356 * to continue, or 0 to stop.
361 *) Change the ZLIB compression method to be stateful, and make it
362 available to TLS with the number defined in
363 draft-ietf-tls-compression-04.txt.
366 *) Add the ASN.1 structures and functions for CertificatePair, which
367 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
369 CertificatePair ::= SEQUENCE {
370 forward [0] Certificate OPTIONAL,
371 reverse [1] Certificate OPTIONAL,
372 -- at least one of the pair shall be present -- }
374 Also implement the PEM functions to read and write certificate
375 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
377 This needed to be defined, mostly for the sake of the LDAP
378 attribute crossCertificatePair, but may prove useful elsewhere as
382 *) Make it possible to inhibit symlinking of shared libraries in
383 Makefile.shared, for Cygwin's sake.
386 *) Extend the BIGNUM API by creating new macros that behave like
389 void BN_set_sign(BIGNUM *a, int neg);
390 int BN_get_sign(const BIGNUM *a);
392 and avoid the need to access 'a->neg' directly in applications.
393 [Nils Larsch <nla@trustcenter.de>]
395 *) Implement fast modular reduction for pseudo-Mersenne primes
396 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
397 EC_GROUP_new_curve_GFp() will now automatically use this
399 [Nils Larsch <nla@trustcenter.de>]
401 *) Add new lock type (CRYPTO_LOCK_BN).
404 *) Change the ENGINE framework to automatically load engines
405 dynamically from specific directories unless they could be
406 found to already be built in or loaded. Move all the
407 current engines except for the cryptodev one to a new
409 The engines in engines/ are built as shared libraries if
410 the "shared" options was given to ./Configure or ./config.
411 Otherwise, they are inserted in libcrypto.a.
412 /usr/local/ssl/engines is the default directory for dynamic
413 engines, but that can be overriden at configure time through
414 the usual use of --prefix and/or --openssldir, and at run
415 time with the environment variable OPENSSL_ENGINES.
416 [Geoff Thorpe and Richard Levitte]
418 *) Add Makefile.shared, a helper makefile to build shared
419 libraries. Addapt Makefile.org.
422 *) Add version info to Win32 DLLs.
423 [Peter 'Luna' Runestig" <peter@runestig.com>]
425 *) Add new 'medium level' PKCS#12 API. Certificates and keys
426 can be added using this API to created arbitrary PKCS#12
427 files while avoiding the low level API.
429 New options to PKCS12_create(), key or cert can be NULL and
430 will then be omitted from the output file. The encryption
431 algorithm NIDs can be set to -1 for no encryption, the mac
432 iteration count can be set to 0 to omit the mac.
434 Enhance pkcs12 utility by making the -nokeys and -nocerts
435 options work when creating a PKCS#12 file. New option -nomac
436 to omit the mac, NONE can be set for an encryption algorithm.
437 New code is modified to use the enhanced PKCS12_create()
438 instead of the low level API.
441 *) Extend ASN1 encoder to support indefinite length constructed
442 encoding. This can output sequences tags and octet strings in
443 this form. Modify pk7_asn1.c to support indefinite length
444 encoding. This is experimental and needs additional code to
445 be useful, such as an ASN1 bio and some enhanced streaming
448 Extend template encode functionality so that tagging is passed
449 down to the template encoder.
452 *) Let 'openssl req' fail if an argument to '-newkey' is not
453 recognized instead of using RSA as a default.
456 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
457 As these are not official, they are not included in "ALL";
458 the "ECCdraft" ciphersuite group alias can be used to select them.
459 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
461 *) Add ECDH engine support.
462 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
464 *) Add ECDH in new directory crypto/ecdh/.
465 [Douglas Stebila (Sun Microsystems Laboratories)]
467 *) Let BN_rand_range() abort with an error after 100 iterations
468 without success (which indicates a broken PRNG).
471 *) Change BN_mod_sqrt() so that it verifies that the input value
472 is really the square of the return value. (Previously,
473 BN_mod_sqrt would show GIGO behaviour.)
476 *) Add named elliptic curves over binary fields from X9.62, SECG,
477 and WAP/WTLS; add OIDs that were still missing.
479 [Sheueling Chang Shantz and Douglas Stebila
480 (Sun Microsystems Laboratories)]
482 *) Extend the EC library for elliptic curves over binary fields
483 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
486 EC_GF2m_simple_method
490 EC_GROUP_new_curve_GF2m
491 EC_GROUP_set_curve_GF2m
492 EC_GROUP_get_curve_GF2m
493 EC_POINT_set_affine_coordinates_GF2m
494 EC_POINT_get_affine_coordinates_GF2m
495 EC_POINT_set_compressed_coordinates_GF2m
497 Point compression for binary fields is disabled by default for
498 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
501 As binary polynomials are represented as BIGNUMs, various members
502 of the EC_GROUP and EC_POINT data structures can be shared
503 between the implementations for prime fields and binary fields;
504 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
505 are essentially identical to their ..._GFp counterparts.
506 (For simplicity, the '..._GFp' prefix has been dropped from
507 various internal method names.)
509 An internal 'field_div' method (similar to 'field_mul' and
510 'field_sqr') has been added; this is used only for binary fields.
512 [Sheueling Chang Shantz and Douglas Stebila
513 (Sun Microsystems Laboratories)]
515 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
516 through methods ('mul', 'precompute_mult').
518 The generic implementations (now internally called 'ec_wNAF_mul'
519 and 'ec_wNAF_precomputed_mult') remain the default if these
520 methods are undefined.
522 [Sheueling Chang Shantz and Douglas Stebila
523 (Sun Microsystems Laboratories)]
525 *) New function EC_GROUP_get_degree, which is defined through
526 EC_METHOD. For curves over prime fields, this returns the bit
527 length of the modulus.
529 [Sheueling Chang Shantz and Douglas Stebila
530 (Sun Microsystems Laboratories)]
532 *) New functions EC_GROUP_dup, EC_POINT_dup.
533 (These simply call ..._new and ..._copy).
535 [Sheueling Chang Shantz and Douglas Stebila
536 (Sun Microsystems Laboratories)]
538 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
539 Polynomials are represented as BIGNUMs (where the sign bit is not
540 used) in the following functions [macros]:
543 BN_GF2m_sub [= BN_GF2m_add]
544 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
545 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
546 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
548 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
549 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
550 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
551 BN_GF2m_cmp [= BN_ucmp]
553 (Note that only the 'mod' functions are actually for fields GF(2^m).
554 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
556 For some functions, an the irreducible polynomial defining a
557 field can be given as an 'unsigned int[]' with strictly
558 decreasing elements giving the indices of those bits that are set;
559 i.e., p[] represents the polynomial
560 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
562 p[0] > p[1] > ... > p[k] = 0.
563 This applies to the following functions:
568 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
569 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
572 BN_GF2m_mod_solve_quad_arr
576 Conversion can be performed by the following functions:
581 bntest.c has additional tests for binary polynomial arithmetic.
583 Two implementations for BN_GF2m_mod_div() are available.
584 The default algorithm simply uses BN_GF2m_mod_inv() and
585 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
586 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
587 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
589 [Sheueling Chang Shantz and Douglas Stebila
590 (Sun Microsystems Laboratories)]
592 *) Add new error code 'ERR_R_DISABLED' that can be used when some
593 functionality is disabled at compile-time.
594 [Douglas Stebila <douglas.stebila@sun.com>]
596 *) Change default behaviour of 'openssl asn1parse' so that more
597 information is visible when viewing, e.g., a certificate:
599 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
600 mode the content of non-printable OCTET STRINGs is output in a
601 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
602 avoid the appearance of a printable string.
603 [Nils Larsch <nla@trustcenter.de>]
605 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
607 EC_GROUP_set_asn1_flag()
608 EC_GROUP_get_asn1_flag()
609 EC_GROUP_set_point_conversion_form()
610 EC_GROUP_get_point_conversion_form()
611 These control ASN1 encoding details:
612 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
613 has been set to OPENSSL_EC_NAMED_CURVE.
614 - Points are encoded in uncompressed form by default; options for
615 asn1_for are as for point2oct, namely
616 POINT_CONVERSION_COMPRESSED
617 POINT_CONVERSION_UNCOMPRESSED
618 POINT_CONVERSION_HYBRID
620 Also add 'seed' and 'seed_len' members to EC_GROUP with access
624 EC_GROUP_get_seed_len()
625 This is used only for ASN1 purposes (so far).
626 [Nils Larsch <nla@trustcenter.de>]
628 *) Add 'field_type' member to EC_METHOD, which holds the NID
629 of the appropriate field type OID. The new function
630 EC_METHOD_get_field_type() returns this value.
631 [Nils Larsch <nla@trustcenter.de>]
638 providing useful interfaces to EC_POINT_point2oct() and
639 EC_POINT_oct2point().
640 [Nils Larsch <nla@trustcenter.de>]
642 *) Change internals of the EC library so that the functions
643 EC_GROUP_set_generator()
644 EC_GROUP_get_generator()
646 EC_GROUP_get_cofactor()
647 are implemented directly in crypto/ec/ec_lib.c and not dispatched
648 to methods, which would lead to unnecessary code duplication when
649 adding different types of curves.
650 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
652 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
653 arithmetic, and such that modified wNAFs are generated
654 (which avoid length expansion in many cases).
657 *) Add a function EC_GROUP_check_discriminant() (defined via
658 EC_METHOD) that verifies that the curve discriminant is non-zero.
660 Add a function EC_GROUP_check() that makes some sanity tests
661 on a EC_GROUP, its generator and order. This includes
662 EC_GROUP_check_discriminant().
663 [Nils Larsch <nla@trustcenter.de>]
665 *) Add ECDSA in new directory crypto/ecdsa/.
667 Add applications 'openssl ecparam' and 'openssl ecdsa'
668 (these are based on 'openssl dsaparam' and 'openssl dsa').
670 ECDSA support is also included in various other files across the
671 library. Most notably,
672 - 'openssl req' now has a '-newkey ecdsa:file' option;
673 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
674 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
675 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
676 them suitable for ECDSA where domain parameters must be
677 extracted before the specific public key;
678 - ECDSA engine support has been added.
679 [Nils Larsch <nla@trustcenter.de>]
681 *) Include some named elliptic curves, and add OIDs from X9.62,
682 SECG, and WAP/WTLS. Each curve can be obtained from the new
684 EC_GROUP_new_by_nid(),
685 and the list of available named curves can be obtained with
686 EC_get_builtin_curves().
687 Also add a 'curve_name' member to EC_GROUP objects, which can be
691 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
693 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
694 was actually never needed) and in BN_mul(). The removal in BN_mul()
695 required a small change in bn_mul_part_recursive() and the addition
696 of the functions bn_cmp_part_words(), bn_sub_part_words() and
697 bn_add_part_words(), which do the same thing as bn_cmp_words(),
698 bn_sub_words() and bn_add_words() except they take arrays with
702 Changes between 0.9.7c and 0.9.7d [xx XXX XXXX]
704 *) X509 verify fixes. Disable broken certificate workarounds when
705 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
706 keyUsage extension present. Don't accept CRLs with unhandled critical
707 extensions: since verify currently doesn't process CRL extensions this
708 rejects a CRL with *any* critical extensions. Add new verify error codes
712 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
713 A clarification of RFC2560 will require the use of OCTET STRINGs and
714 some implementations cannot handle the current raw format. Since OpenSSL
715 copies and compares OCSP nonces as opaque blobs without any attempt at
716 parsing them this should not create any compatibility issues.
719 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
720 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
721 this HMAC (and other) operations are several times slower than OpenSSL
725 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
726 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
728 *) Use the correct content when signing type "other".
731 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
733 *) Fix various bugs revealed by running the NISCC test suite:
735 Stop out of bounds reads in the ASN1 code when presented with
736 invalid tags (CAN-2003-0543 and CAN-2003-0544).
738 Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
740 If verify callback ignores invalid public key errors don't try to check
741 certificate signature with the NULL public key.
745 *) New -ignore_err option in ocsp application to stop the server
746 exiting on the first error in a request.
749 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
750 if the server requested one: as stated in TLS 1.0 and SSL 3.0
754 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
755 extra data after the compression methods not only for TLS 1.0
756 but also for SSL 3.0 (as required by the specification).
757 [Bodo Moeller; problem pointed out by Matthias Loepfe]
759 *) Change X509_certificate_type() to mark the key as exported/exportable
760 when it's 512 *bits* long, not 512 bytes.
763 *) Change AES_cbc_encrypt() so it outputs exact multiple of
764 blocks during encryption.
767 *) Various fixes to base64 BIO and non blocking I/O. On write
768 flushes were not handled properly if the BIO retried. On read
769 data was not being buffered properly and had various logic bugs.
770 This also affects blocking I/O when the data being decoded is a
774 *) Various S/MIME bugfixes and compatibility changes:
775 output correct application/pkcs7 MIME type if
776 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
777 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
778 of files as .eml work). Correctly handle very long lines in MIME
782 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
784 *) Countermeasure against the Klima-Pokorny-Rosa extension of
785 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
786 a protocol version number mismatch like a decryption error
787 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
790 *) Turn on RSA blinding by default in the default implementation
791 to avoid a timing attack. Applications that don't want it can call
792 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
793 They would be ill-advised to do so in most cases.
794 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
796 *) Change RSA blinding code so that it works when the PRNG is not
797 seeded (in this case, the secret RSA exponent is abused as
798 an unpredictable seed -- if it is not unpredictable, there
799 is no point in blinding anyway). Make RSA blinding thread-safe
800 by remembering the creator's thread ID in rsa->blinding and
801 having all other threads use local one-time blinding factors
802 (this requires more computation than sharing rsa->blinding, but
803 avoids excessive locking; and if an RSA object is not shared
804 between threads, blinding will still be very fast).
807 *) Target "mingw" now allows native Windows code to be generated in
808 the Cygwin environment as well as with the MinGW compiler.
811 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
813 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
814 via timing by performing a MAC computation even if incorrrect
815 block cipher padding has been found. This is a countermeasure
816 against active attacks where the attacker has to distinguish
817 between bad padding and a MAC verification error. (CAN-2003-0078)
819 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
820 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
821 Martin Vuagnoux (EPFL, Ilion)]
823 *) Make the no-err option work as intended. The intention with no-err
824 is not to have the whole error stack handling routines removed from
825 libcrypto, it's only intended to remove all the function name and
826 reason texts, thereby removing some of the footprint that may not
827 be interesting if those errors aren't displayed anyway.
829 NOTE: it's still possible for any application or module to have it's
830 own set of error texts inserted. The routines are there, just not
831 used by default when no-err is given.
834 *) Add support for FreeBSD on IA64.
835 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
837 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
838 Kerberos function mit_des_cbc_cksum(). Before this change,
839 the value returned by DES_cbc_cksum() was like the one from
840 mit_des_cbc_cksum(), except the bytes were swapped.
841 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
843 *) Allow an application to disable the automatic SSL chain building.
844 Before this a rather primitive chain build was always performed in
845 ssl3_output_cert_chain(): an application had no way to send the
846 correct chain if the automatic operation produced an incorrect result.
848 Now the chain builder is disabled if either:
850 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
852 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
854 The reasoning behind this is that an application would not want the
855 auto chain building to take place if extra chain certificates are
856 present and it might also want a means of sending no additional
857 certificates (for example the chain has two certificates and the
861 *) Add the possibility to build without the ENGINE framework.
862 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
864 *) Under Win32 gmtime() can return NULL: check return value in
865 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
868 *) DSA routines: under certain error conditions uninitialized BN objects
869 could be freed. Solution: make sure initialization is performed early
870 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
871 Nils Larsch <nla@trustcenter.de> via PR#459)
874 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
875 checked on reconnect on the client side, therefore session resumption
876 could still fail with a "ssl session id is different" error. This
877 behaviour is masked when SSL_OP_ALL is used due to
878 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
879 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
883 *) IA-32 assembler support enhancements: unified ELF targets, support
884 for SCO/Caldera platforms, fix for Cygwin shared build.
887 *) Add support for FreeBSD on sparc64. As a consequence, support for
888 FreeBSD on non-x86 processors is separate from x86 processors on
889 the config script, much like the NetBSD support.
890 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
892 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
894 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
897 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
898 code (06) was taken as the first octet of the session ID and the last
899 octet was ignored consequently. As a result SSLv2 client side session
900 caching could not have worked due to the session ID mismatch between
902 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
906 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
907 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
911 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
912 seems that in spite of existing for more than a year, many application
913 author have done nothing to provide the necessary callbacks, which
914 means that this particular engine will not work properly anywhere.
915 This is a very unfortunate situation which forces us, in the name
916 of usability, to give the hw_ncipher.c a static lock, which is part
918 NOTE: This is for the 0.9.7 series ONLY. This hack will never
919 appear in 0.9.8 or later. We EXPECT application authors to have
920 dealt properly with this when 0.9.8 is released (unless we actually
921 make such changes in the libcrypto locking code that changes will
922 have to be made anyway).
925 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
926 octets have been read, EOF or an error occurs. Without this change
927 some truncated ASN1 structures will not produce an error.
930 *) Disable Heimdal support, since it hasn't been fully implemented.
931 Still give the possibility to force the use of Heimdal, but with
932 warnings and a request that patches get sent to openssl-dev.
935 *) Add the VC-CE target, introduce the WINCE sysname, and add
936 INSTALL.WCE and appropriate conditionals to make it build.
937 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
939 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
940 cygssl-x.y.z.dll, where x, y and z are the major, minor and
941 edit numbers of the version.
942 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
944 *) Introduce safe string copy and catenation functions
945 (BUF_strlcpy() and BUF_strlcat()).
946 [Ben Laurie (CHATS) and Richard Levitte]
948 *) Avoid using fixed-size buffers for one-line DNs.
951 *) Add BUF_MEM_grow_clean() to avoid information leakage when
952 resizing buffers containing secrets, and use where appropriate.
955 *) Avoid using fixed size buffers for configuration file location.
958 *) Avoid filename truncation for various CA files.
961 *) Use sizeof in preference to magic numbers.
964 *) Avoid filename truncation in cert requests.
967 *) Add assertions to check for (supposedly impossible) buffer
971 *) Don't cache truncated DNS entries in the local cache (this could
972 potentially lead to a spoofing attack).
975 *) Fix various buffers to be large enough for hex/decimal
976 representations in a platform independent manner.
979 *) Add CRYPTO_realloc_clean() to avoid information leakage when
980 resizing buffers containing secrets, and use where appropriate.
983 *) Add BIO_indent() to avoid much slightly worrying code to do
987 *) Convert sprintf()/BIO_puts() to BIO_printf().
990 *) buffer_gets() could terminate with the buffer only half
994 *) Add assertions to prevent user-supplied crypto functions from
995 overflowing internal buffers by having large block sizes, etc.
998 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1000 [Ben Laurie (CHATS)]
1002 *) Eliminate unused copy of key in RC4.
1003 [Ben Laurie (CHATS)]
1005 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1006 [Ben Laurie (CHATS)]
1008 *) Fix off-by-one error in EGD path.
1009 [Ben Laurie (CHATS)]
1011 *) If RANDFILE path is too long, ignore instead of truncating.
1012 [Ben Laurie (CHATS)]
1014 *) Eliminate unused and incorrectly sized X.509 structure
1016 [Ben Laurie (CHATS)]
1018 *) Eliminate unused and dangerous function knumber().
1019 [Ben Laurie (CHATS)]
1021 *) Eliminate unused and dangerous structure, KSSL_ERR.
1022 [Ben Laurie (CHATS)]
1024 *) Protect against overlong session ID context length in an encoded
1025 session object. Since these are local, this does not appear to be
1027 [Ben Laurie (CHATS)]
1029 *) Change from security patch (see 0.9.6e below) that did not affect
1030 the 0.9.6 release series:
1032 Remote buffer overflow in SSL3 protocol - an attacker could
1033 supply an oversized master key in Kerberos-enabled versions.
1035 [Ben Laurie (CHATS)]
1037 *) Change the SSL kerb5 codes to match RFC 2712.
1040 *) Make -nameopt work fully for req and add -reqopt switch.
1041 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1043 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1044 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1046 *) Make sure tests can be performed even if the corresponding algorithms
1047 have been removed entirely. This was also the last step to make
1048 OpenSSL compilable with DJGPP under all reasonable conditions.
1049 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1051 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1052 to allow version independent disabling of normally unselected ciphers,
1053 which may be activated as a side-effect of selecting a single cipher.
1055 (E.g., cipher list string "RSA" enables ciphersuites that are left
1056 out of "ALL" because they do not provide symmetric encryption.
1057 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1058 [Lutz Jaenicke, Bodo Moeller]
1060 *) Add appropriate support for separate platform-dependent build
1061 directories. The recommended way to make a platform-dependent
1062 build directory is the following (tested on Linux), maybe with
1065 # Place yourself outside of the OpenSSL source tree. In
1066 # this example, the environment variable OPENSSL_SOURCE
1067 # is assumed to contain the absolute OpenSSL source directory.
1068 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1069 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1070 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1071 mkdir -p `dirname $F`
1072 ln -s $OPENSSL_SOURCE/$F $F
1075 To be absolutely sure not to disturb the source tree, a "make clean"
1076 is a good thing. If it isn't successfull, don't worry about it,
1077 it probably means the source directory is very clean.
1080 *) Make sure any ENGINE control commands make local copies of string
1081 pointers passed to them whenever necessary. Otherwise it is possible
1082 the caller may have overwritten (or deallocated) the original string
1083 data when a later ENGINE operation tries to use the stored values.
1084 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1086 *) Improve diagnostics in file reading and command-line digests.
1087 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1089 *) Add AES modes CFB and OFB to the object database. Correct an
1090 error in AES-CFB decryption.
1093 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1094 allows existing EVP_CIPHER_CTX structures to be reused after
1095 calling EVP_*Final(). This behaviour is used by encryption
1096 BIOs and some applications. This has the side effect that
1097 applications must explicitly clean up cipher contexts with
1098 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1101 *) Check the values of dna and dnb in bn_mul_recursive before calling
1102 bn_mul_comba (a non zero value means the a or b arrays do not contain
1103 n2 elements) and fallback to bn_mul_normal if either is not zero.
1106 *) Fix escaping of non-ASCII characters when using the -subj option
1107 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1110 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1111 form for "surname", serialNumber has no short form.
1112 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1113 therefore remove "mail" short name for "internet 7".
1114 The OID for unique identifiers in X509 certificates is
1115 x500UniqueIdentifier, not uniqueIdentifier.
1116 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1119 *) Add an "init" command to the ENGINE config module and auto initialize
1120 ENGINEs. Without any "init" command the ENGINE will be initialized
1121 after all ctrl commands have been executed on it. If init=1 the
1122 ENGINE is initailized at that point (ctrls before that point are run
1123 on the uninitialized ENGINE and after on the initialized one). If
1124 init=0 then the ENGINE will not be iniatialized at all.
1127 *) Fix the 'app_verify_callback' interface so that the user-defined
1128 argument is actually passed to the callback: In the
1129 SSL_CTX_set_cert_verify_callback() prototype, the callback
1130 declaration has been changed from
1133 int (*cb)(X509_STORE_CTX *,void *);
1134 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1135 i=s->ctx->app_verify_callback(&ctx)
1136 has been changed into
1137 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1139 To update applications using SSL_CTX_set_cert_verify_callback(),
1140 a dummy argument can be added to their callback functions.
1141 [D. K. Smetters <smetters@parc.xerox.com>]
1143 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1144 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1146 *) Add and OPENSSL_LOAD_CONF define which will cause
1147 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1148 This allows older applications to transparently support certain
1149 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1150 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1151 load the config file and OPENSSL_add_all_algorithms_conf() which will
1152 always load it have also been added.
1155 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1156 Adjust NIDs and EVP layer.
1157 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1159 *) Config modules support in openssl utility.
1161 Most commands now load modules from the config file,
1162 though in a few (such as version) this isn't done
1163 because it couldn't be used for anything.
1165 In the case of ca and req the config file used is
1166 the same as the utility itself: that is the -config
1167 command line option can be used to specify an
1171 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1172 use "openssl_conf" if filename is NULL use default openssl config file.
1175 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1176 config section name. Add a new flag to tolerate a missing config file
1177 and move code to CONF_modules_load_file().
1180 *) Support for crypto accelerator cards from Accelerated Encryption
1181 Processing, www.aep.ie. (Use engine 'aep')
1182 The support was copied from 0.9.6c [engine] and adapted/corrected
1183 to work with the new engine framework.
1184 [AEP Inc. and Richard Levitte]
1186 *) Support for SureWare crypto accelerator cards from Baltimore
1187 Technologies. (Use engine 'sureware')
1188 The support was copied from 0.9.6c [engine] and adapted
1189 to work with the new engine framework.
1192 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1193 make the newer ENGINE framework commands for the CHIL engine work.
1194 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1196 *) Make it possible to produce shared libraries on ReliantUNIX.
1197 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1199 *) Add the configuration target debug-linux-ppro.
1200 Make 'openssl rsa' use the general key loading routines
1201 implemented in apps.c, and make those routines able to
1202 handle the key format FORMAT_NETSCAPE and the variant
1204 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1206 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1207 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1209 *) Add -keyform to rsautl, and document -engine.
1210 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1212 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1213 BIO_R_NO_SUCH_FILE error code rather than the generic
1214 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1217 *) Add new functions
1219 ERR_peek_last_error_line
1220 ERR_peek_last_error_line_data.
1221 These are similar to
1224 ERR_peek_error_line_data,
1225 but report on the latest error recorded rather than the first one
1226 still in the error queue.
1227 [Ben Laurie, Bodo Moeller]
1229 *) default_algorithms option in ENGINE config module. This allows things
1231 default_algorithms = ALL
1232 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1235 *) Prelminary ENGINE config module.
1238 *) New experimental application configuration code.
1241 *) Change the AES code to follow the same name structure as all other
1242 symmetric ciphers, and behave the same way. Move everything to
1243 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1244 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1246 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1247 [Ben Laurie and Theo de Raadt]
1249 *) Add option to output public keys in req command.
1250 [Massimiliano Pala madwolf@openca.org]
1252 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1253 (up to about 10% better than before for P-192 and P-224).
1256 *) New functions/macros
1258 SSL_CTX_set_msg_callback(ctx, cb)
1259 SSL_CTX_set_msg_callback_arg(ctx, arg)
1260 SSL_set_msg_callback(ssl, cb)
1261 SSL_set_msg_callback_arg(ssl, arg)
1263 to request calling a callback function
1265 void cb(int write_p, int version, int content_type,
1266 const void *buf, size_t len, SSL *ssl, void *arg)
1268 whenever a protocol message has been completely received
1269 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1270 protocol version according to which the SSL library interprets
1271 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1272 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1273 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1274 specification (change_cipher_spec(20), alert(21), handshake(22)).
1275 'buf' and 'len' point to the actual message, 'ssl' to the
1276 SSL object, and 'arg' is the application-defined value set by
1277 SSL[_CTX]_set_msg_callback_arg().
1279 'openssl s_client' and 'openssl s_server' have new '-msg' options
1280 to enable a callback that displays all protocol messages.
1283 *) Change the shared library support so shared libraries are built as
1284 soon as the corresponding static library is finished, and thereby get
1285 openssl and the test programs linked against the shared library.
1286 This still only happens when the keyword "shard" has been given to
1287 the configuration scripts.
1289 NOTE: shared library support is still an experimental thing, and
1290 backward binary compatibility is still not guaranteed.
1291 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1293 *) Add support for Subject Information Access extension.
1294 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1296 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1297 additional bytes when new memory had to be allocated, not just
1298 when reusing an existing buffer.
1301 *) New command line and configuration option 'utf8' for the req command.
1302 This allows field values to be specified as UTF8 strings.
1305 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1306 runs for the former and machine-readable output for the latter.
1309 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1310 of the e-mail address in the DN (i.e., it will go into a certificate
1311 extension only). The new configuration file option 'email_in_dn = no'
1312 has the same effect.
1313 [Massimiliano Pala madwolf@openca.org]
1315 *) Change all functions with names starting with des_ to be starting
1316 with DES_ instead. Add wrappers that are compatible with libdes,
1317 but are named _ossl_old_des_*. Finally, add macros that map the
1318 des_* symbols to the corresponding _ossl_old_des_* if libdes
1319 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1320 desired, the des_* symbols will be mapped to DES_*, with one
1323 Since we provide two compatibility mappings, the user needs to
1324 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1325 compatibility is desired. The default (i.e., when that macro
1326 isn't defined) is OpenSSL 0.9.6c compatibility.
1328 There are also macros that enable and disable the support of old
1329 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1330 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1331 are defined, the default will apply: to support the old des routines.
1333 In either case, one must include openssl/des.h to get the correct
1334 definitions. Do not try to just include openssl/des_old.h, that
1337 NOTE: This is a major break of an old API into a new one. Software
1338 authors are encouraged to switch to the DES_ style functions. Some
1339 time in the future, des_old.h and the libdes compatibility functions
1340 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1341 default), and then completely removed.
1344 *) Test for certificates which contain unsupported critical extensions.
1345 If such a certificate is found during a verify operation it is
1346 rejected by default: this behaviour can be overridden by either
1347 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1348 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1349 X509_supported_extension() has also been added which returns 1 if a
1350 particular extension is supported.
1353 *) Modify the behaviour of EVP cipher functions in similar way to digests
1354 to retain compatibility with existing code.
1357 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1358 compatibility with existing code. In particular the 'ctx' parameter does
1359 not have to be to be initialized before the call to EVP_DigestInit() and
1360 it is tidied up after a call to EVP_DigestFinal(). New function
1361 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1362 EVP_MD_CTX_copy() changed to not require the destination to be
1363 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1364 requires the destination to be valid.
1366 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1367 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1370 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1371 so that complete 'Handshake' protocol structures are kept in memory
1372 instead of overwriting 'msg_type' and 'length' with 'body' data.
1375 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1376 [Massimo Santin via Richard Levitte]
1378 *) Major restructuring to the underlying ENGINE code. This includes
1379 reduction of linker bloat, separation of pure "ENGINE" manipulation
1380 (initialisation, etc) from functionality dealing with implementations
1381 of specific crypto iterfaces. This change also introduces integrated
1382 support for symmetric ciphers and digest implementations - so ENGINEs
1383 can now accelerate these by providing EVP_CIPHER and EVP_MD
1384 implementations of their own. This is detailed in crypto/engine/README
1385 as it couldn't be adequately described here. However, there are a few
1386 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1387 were changed in the original introduction of ENGINE code have now
1388 reverted back - the hooking from this code to ENGINE is now a good
1389 deal more passive and at run-time, operations deal directly with
1390 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1391 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1392 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1393 they were not being used by the framework as there is no concept of a
1394 BIGNUM_METHOD and they could not be generalised to the new
1395 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1396 ENGINE_cpy() has been removed as it cannot be consistently defined in
1400 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1403 *) Change mkdef.pl to sort symbols that get the same entry number,
1404 and make sure the automatically generated functions ERR_load_*
1405 become part of libeay.num as well.
1408 *) New function SSL_renegotiate_pending(). This returns true once
1409 renegotiation has been requested (either SSL_renegotiate() call
1410 or HelloRequest/ClientHello receveived from the peer) and becomes
1411 false once a handshake has been completed.
1412 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1413 sends a HelloRequest, but does not ensure that a handshake takes
1414 place. SSL_renegotiate_pending() is useful for checking if the
1415 client has followed the request.)
1418 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1419 By default, clients may request session resumption even during
1420 renegotiation (if session ID contexts permit); with this option,
1421 session resumption is possible only in the first handshake.
1423 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1424 more bits available for options that should not be part of
1425 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1428 *) Add some demos for certificate and certificate request creation.
1431 *) Make maximum certificate chain size accepted from the peer application
1432 settable (SSL*_get/set_max_cert_list()), as proposed by
1433 "Douglas E. Engert" <deengert@anl.gov>.
1436 *) Add support for shared libraries for Unixware-7
1437 (Boyd Lynn Gerber <gerberb@zenez.com>).
1440 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1441 be done prior to destruction. Use this to unload error strings from
1442 ENGINEs that load their own error strings. NB: This adds two new API
1443 functions to "get" and "set" this destroy handler in an ENGINE.
1446 *) Alter all existing ENGINE implementations (except "openssl" and
1447 "openbsd") to dynamically instantiate their own error strings. This
1448 makes them more flexible to be built both as statically-linked ENGINEs
1449 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1450 Also, add stub code to each that makes building them as self-contained
1451 shared-libraries easier (see README.ENGINE).
1454 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1455 implementations into applications that are completely implemented in
1456 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1457 commands that can be used to configure what shared-library to load and
1458 to control aspects of the way it is handled. Also, made an update to
1459 the README.ENGINE file that brings its information up-to-date and
1460 provides some information and instructions on the "dynamic" ENGINE
1461 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1464 *) Make it possible to unload ranges of ERR strings with a new
1465 "ERR_unload_strings" function.
1468 *) Add a copy() function to EVP_MD.
1471 *) Make EVP_MD routines take a context pointer instead of just the
1472 md_data void pointer.
1475 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1476 that the digest can only process a single chunk of data
1477 (typically because it is provided by a piece of
1478 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1479 is only going to provide a single chunk of data, and hence the
1480 framework needn't accumulate the data for oneshot drivers.
1483 *) As with "ERR", make it possible to replace the underlying "ex_data"
1484 functions. This change also alters the storage and management of global
1485 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1486 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1487 index counters. The API functions that use this state have been changed
1488 to take a "class_index" rather than pointers to the class's local STACK
1489 and counter, and there is now an API function to dynamically create new
1490 classes. This centralisation allows us to (a) plug a lot of the
1491 thread-safety problems that existed, and (b) makes it possible to clean
1492 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1493 such data would previously have always leaked in application code and
1494 workarounds were in place to make the memory debugging turn a blind eye
1495 to it. Application code that doesn't use this new function will still
1496 leak as before, but their memory debugging output will announce it now
1497 rather than letting it slide.
1499 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1500 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1501 has a return value to indicate success or failure.
1504 *) Make it possible to replace the underlying "ERR" functions such that the
1505 global state (2 LHASH tables and 2 locks) is only used by the "default"
1506 implementation. This change also adds two functions to "get" and "set"
1507 the implementation prior to it being automatically set the first time
1508 any other ERR function takes place. Ie. an application can call "get",
1509 pass the return value to a module it has just loaded, and that module
1510 can call its own "set" function using that value. This means the
1511 module's "ERR" operations will use (and modify) the error state in the
1512 application and not in its own statically linked copy of OpenSSL code.
1515 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1516 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1517 the operation, and provides a more encapsulated way for external code
1518 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1519 to use these functions rather than manually incrementing the counts.
1521 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1524 *) Add EVP test program.
1527 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1530 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1531 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1532 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1533 These allow a CRL to be built without having to access X509_CRL fields
1534 directly. Modify 'ca' application to use new functions.
1537 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1538 bug workarounds. Rollback attack detection is a security feature.
1539 The problem will only arise on OpenSSL servers when TLSv1 is not
1540 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1541 Software authors not wanting to support TLSv1 will have special reasons
1542 for their choice and can explicitly enable this option.
1543 [Bodo Moeller, Lutz Jaenicke]
1545 *) Rationalise EVP so it can be extended: don't include a union of
1546 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1547 (similar to those existing for EVP_CIPHER_CTX).
1552 EVP_MD_CTX_init(&md); /* new function call */
1553 EVP_DigestInit(&md, EVP_sha1());
1554 EVP_DigestUpdate(&md, in, len);
1555 EVP_DigestFinal(&md, out, NULL);
1556 EVP_MD_CTX_cleanup(&md); /* new function call */
1560 *) Make DES key schedule conform to the usual scheme, as well as
1561 correcting its structure. This means that calls to DES functions
1562 now have to pass a pointer to a des_key_schedule instead of a
1563 plain des_key_schedule (which was actually always a pointer
1566 des_key_schedule ks;
1568 des_set_key_checked(..., &ks);
1569 des_ncbc_encrypt(..., &ks, ...);
1571 (Note that a later change renames 'des_...' into 'DES_...'.)
1574 *) Initial reduction of linker bloat: the use of some functions, such as
1575 PEM causes large amounts of unused functions to be linked in due to
1576 poor organisation. For example pem_all.c contains every PEM function
1577 which has a knock on effect of linking in large amounts of (unused)
1578 ASN1 code. Grouping together similar functions and splitting unrelated
1579 functions prevents this.
1582 *) Cleanup of EVP macros.
1585 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1586 correct _ecb suffix.
1589 *) Add initial OCSP responder support to ocsp application. The
1590 revocation information is handled using the text based index
1591 use by the ca application. The responder can either handle
1592 requests generated internally, supplied in files (for example
1593 via a CGI script) or using an internal minimal server.
1596 *) Add configuration choices to get zlib compression for TLS.
1599 *) Changes to Kerberos SSL for RFC 2712 compliance:
1600 1. Implemented real KerberosWrapper, instead of just using
1601 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1602 2. Implemented optional authenticator field of KerberosWrapper.
1604 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1605 and authenticator structs; see crypto/krb5/.
1607 Generalized Kerberos calls to support multiple Kerberos libraries.
1608 [Vern Staats <staatsvr@asc.hpc.mil>,
1609 Jeffrey Altman <jaltman@columbia.edu>
1610 via Richard Levitte]
1612 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1613 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1614 values for each of the key sizes rather than having just
1615 parameters (and 'speed' generating keys each time).
1618 *) Speed up EVP routines.
1621 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1622 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1623 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1624 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1626 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1627 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1628 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1631 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1633 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1636 *) Added the OS2-EMX target.
1637 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1639 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1640 to support NCONF routines in extension code. New function CONF_set_nconf()
1641 to allow functions which take an NCONF to also handle the old LHASH
1642 structure: this means that the old CONF compatible routines can be
1643 retained (in particular wrt extensions) without having to duplicate the
1644 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1647 *) Enhance the general user interface with mechanisms for inner control
1648 and with possibilities to have yes/no kind of prompts.
1651 *) Change all calls to low level digest routines in the library and
1652 applications to use EVP. Add missing calls to HMAC_cleanup() and
1653 don't assume HMAC_CTX can be copied using memcpy().
1654 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1656 *) Add the possibility to control engines through control names but with
1657 arbitrary arguments instead of just a string.
1658 Change the key loaders to take a UI_METHOD instead of a callback
1659 function pointer. NOTE: this breaks binary compatibility with earlier
1660 versions of OpenSSL [engine].
1661 Adapt the nCipher code for these new conditions and add a card insertion
1665 *) Enhance the general user interface with mechanisms to better support
1666 dialog box interfaces, application-defined prompts, the possibility
1667 to use defaults (for example default passwords from somewhere else)
1668 and interrupts/cancellations.
1671 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1672 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1675 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1676 tidy up some unnecessarily weird code in 'sk_new()').
1677 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1679 *) Change the key loading routines for ENGINEs to use the same kind
1680 callback (pem_password_cb) as all other routines that need this
1684 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1685 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1686 than this minimum value is recommended.
1689 *) New random seeder for OpenVMS, using the system process statistics
1690 that are easily reachable.
1693 *) Windows apparently can't transparently handle global
1694 variables defined in DLLs. Initialisations such as:
1696 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1698 wont compile. This is used by the any applications that need to
1699 declare their own ASN1 modules. This was fixed by adding the option
1700 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1701 needed for static libraries under Win32.
1704 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1705 setting of purpose and trust fields. New X509_STORE trust and
1706 purpose functions and tidy up setting in other SSL functions.
1709 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1710 structure. These are inherited by X509_STORE_CTX when it is
1711 initialised. This allows various defaults to be set in the
1712 X509_STORE structure (such as flags for CRL checking and custom
1713 purpose or trust settings) for functions which only use X509_STORE_CTX
1714 internally such as S/MIME.
1716 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1717 trust settings if they are not set in X509_STORE. This allows X509_STORE
1718 purposes and trust (in S/MIME for example) to override any set by default.
1720 Add command line options for CRL checking to smime, s_client and s_server
1724 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1725 are set then the CRL is looked up in the X509_STORE structure and
1726 its validity and signature checked, then if the certificate is found
1727 in the CRL the verify fails with a revoked error.
1729 Various new CRL related callbacks added to X509_STORE_CTX structure.
1731 Command line options added to 'verify' application to support this.
1733 This needs some additional work, such as being able to handle multiple
1734 CRLs with different times, extension based lookup (rather than just
1735 by subject name) and ultimately more complete V2 CRL extension
1739 *) Add a general user interface API (crypto/ui/). This is designed
1740 to replace things like des_read_password and friends (backward
1741 compatibility functions using this new API are provided).
1742 The purpose is to remove prompting functions from the DES code
1743 section as well as provide for prompting through dialog boxes in
1744 a window system and the like.
1747 *) Add "ex_data" support to ENGINE so implementations can add state at a
1748 per-structure level rather than having to store it globally.
1751 *) Make it possible for ENGINE structures to be copied when retrieved by
1752 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1753 This causes the "original" ENGINE structure to act like a template,
1754 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1755 operational state can be localised to each ENGINE structure, despite the
1756 fact they all share the same "methods". New ENGINE structures returned in
1757 this case have no functional references and the return value is the single
1758 structural reference. This matches the single structural reference returned
1759 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1763 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1764 needs to match any other type at all we need to manually clear the
1768 *) Changes to the "openssl engine" utility to include;
1769 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1770 about an ENGINE's available control commands.
1771 - executing control commands from command line arguments using the
1772 '-pre' and '-post' switches. '-post' is only used if '-t' is
1773 specified and the ENGINE is successfully initialised. The syntax for
1774 the individual commands are colon-separated, for example;
1775 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1778 *) New dynamic control command support for ENGINEs. ENGINEs can now
1779 declare their own commands (numbers), names (strings), descriptions,
1780 and input types for run-time discovery by calling applications. A
1781 subset of these commands are implicitly classed as "executable"
1782 depending on their input type, and only these can be invoked through
1783 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1784 can be based on user input, config files, etc). The distinction is
1785 that "executable" commands cannot return anything other than a boolean
1786 result and can only support numeric or string input, whereas some
1787 discoverable commands may only be for direct use through
1788 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1789 pointers, or other custom uses. The "executable" commands are to
1790 support parameterisations of ENGINE behaviour that can be
1791 unambiguously defined by ENGINEs and used consistently across any
1792 OpenSSL-based application. Commands have been added to all the
1793 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1794 control over shared-library paths without source code alterations.
1797 *) Changed all ENGINE implementations to dynamically allocate their
1798 ENGINEs rather than declaring them statically. Apart from this being
1799 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1800 this also allows the implementations to compile without using the
1801 internal engine_int.h header.
1804 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
1805 'const' value. Any code that should be able to modify a RAND_METHOD
1806 should already have non-const pointers to it (ie. they should only
1807 modify their own ones).
1810 *) Made a variety of little tweaks to the ENGINE code.
1811 - "atalla" and "ubsec" string definitions were moved from header files
1812 to C code. "nuron" string definitions were placed in variables
1813 rather than hard-coded - allowing parameterisation of these values
1814 later on via ctrl() commands.
1815 - Removed unused "#if 0"'d code.
1816 - Fixed engine list iteration code so it uses ENGINE_free() to release
1817 structural references.
1818 - Constified the RAND_METHOD element of ENGINE structures.
1819 - Constified various get/set functions as appropriate and added
1820 missing functions (including a catch-all ENGINE_cpy that duplicates
1821 all ENGINE values onto a new ENGINE except reference counts/state).
1822 - Removed NULL parameter checks in get/set functions. Setting a method
1823 or function to NULL is a way of cancelling out a previously set
1824 value. Passing a NULL ENGINE parameter is just plain stupid anyway
1825 and doesn't justify the extra error symbols and code.
1826 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
1827 flags from engine_int.h to engine.h.
1828 - Changed prototypes for ENGINE handler functions (init(), finish(),
1829 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
1832 *) Implement binary inversion algorithm for BN_mod_inverse in addition
1833 to the algorithm using long division. The binary algorithm can be
1834 used only if the modulus is odd. On 32-bit systems, it is faster
1835 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
1836 roughly 5-15% for 256-bit moduli), so we use it only for moduli
1837 up to 450 bits. In 64-bit environments, the binary algorithm
1838 appears to be advantageous for much longer moduli; here we use it
1839 for moduli up to 2048 bits.
1842 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
1843 could not support the combine flag in choice fields.
1846 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
1847 extensions from a certificate request to the certificate.
1850 *) Allow multiple 'certopt' and 'nameopt' options to be separated
1851 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
1852 file: this allows the display of the certificate about to be
1853 signed to be customised, to allow certain fields to be included
1854 or excluded and extension details. The old system didn't display
1855 multicharacter strings properly, omitted fields not in the policy
1856 and couldn't display additional details such as extensions.
1859 *) Function EC_POINTs_mul for multiple scalar multiplication
1860 of an arbitrary number of elliptic curve points
1861 \sum scalars[i]*points[i],
1862 optionally including the generator defined for the EC_GROUP:
1863 scalar*generator + \sum scalars[i]*points[i].
1865 EC_POINT_mul is a simple wrapper function for the typical case
1866 that the point list has just one item (besides the optional
1870 *) First EC_METHODs for curves over GF(p):
1872 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
1873 operations and provides various method functions that can also
1874 operate with faster implementations of modular arithmetic.
1876 EC_GFp_mont_method() reuses most functions that are part of
1877 EC_GFp_simple_method, but uses Montgomery arithmetic.
1879 [Bodo Moeller; point addition and point doubling
1880 implementation directly derived from source code provided by
1881 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
1883 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
1884 crypto/ec/ec_lib.c):
1886 Curves are EC_GROUP objects (with an optional group generator)
1887 based on EC_METHODs that are built into the library.
1889 Points are EC_POINT objects based on EC_GROUP objects.
1891 Most of the framework would be able to handle curves over arbitrary
1892 finite fields, but as there are no obvious types for fields other
1893 than GF(p), some functions are limited to that for now.
1896 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
1897 that the file contains a complete HTTP response.
1900 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
1901 change the def and num file printf format specifier from "%-40sXXX"
1902 to "%-39s XXX". The latter will always guarantee a space after the
1903 field while the former will cause them to run together if the field
1904 is 40 of more characters long.
1907 *) Constify the cipher and digest 'method' functions and structures
1908 and modify related functions to take constant EVP_MD and EVP_CIPHER
1912 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
1913 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
1916 *) Modify EVP_Digest*() routines so they now return values. Although the
1917 internal software routines can never fail additional hardware versions
1921 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
1923 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
1924 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
1927 ERR_R_NESTED_ASN1_ERROR
1929 ERR_R_MISSING_ASN1_EOS
1930 were 4 .. 9, conflicting with
1931 ERR_LIB_RSA (= ERR_R_RSA_LIB)
1933 ERR_LIB_PEM (= ERR_R_PEM_LIB).
1934 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
1936 Add new error code 'ERR_R_INTERNAL_ERROR'.
1939 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
1943 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
1944 sets the subject name for a new request or supersedes the
1945 subject name in a given request. Formats that can be parsed are
1946 'CN=Some Name, OU=myOU, C=IT'
1948 'CN=Some Name/OU=myOU/C=IT'.
1950 Add options '-batch' and '-verbose' to 'openssl req'.
1951 [Massimiliano Pala <madwolf@hackmasters.net>]
1953 *) Introduce the possibility to access global variables through
1954 functions on platform were that's the best way to handle exporting
1955 global variables in shared libraries. To enable this functionality,
1956 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
1957 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
1958 is normally done by Configure or something similar).
1960 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
1961 in the source file (foo.c) like this:
1963 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
1964 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
1966 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
1967 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
1969 OPENSSL_DECLARE_GLOBAL(int,foo);
1970 #define foo OPENSSL_GLOBAL_REF(foo)
1971 OPENSSL_DECLARE_GLOBAL(double,bar);
1972 #define bar OPENSSL_GLOBAL_REF(bar)
1974 The #defines are very important, and therefore so is including the
1975 header file everywhere where the defined globals are used.
1977 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
1978 of ASN.1 items, but that structure is a bit different.
1980 The largest change is in util/mkdef.pl which has been enhanced with
1981 better and easier to understand logic to choose which symbols should
1982 go into the Windows .def files as well as a number of fixes and code
1983 cleanup (among others, algorithm keywords are now sorted
1984 lexicographically to avoid constant rewrites).
1987 *) In BN_div() keep a copy of the sign of 'num' before writing the
1988 result to 'rm' because if rm==num the value will be overwritten
1989 and produce the wrong result if 'num' is negative: this caused
1990 problems with BN_mod() and BN_nnmod().
1993 *) Function OCSP_request_verify(). This checks the signature on an
1994 OCSP request and verifies the signer certificate. The signer
1995 certificate is just checked for a generic purpose and OCSP request
1999 *) Add OCSP_check_validity() function to check the validity of OCSP
2000 responses. OCSP responses are prepared in real time and may only
2001 be a few seconds old. Simply checking that the current time lies
2002 between thisUpdate and nextUpdate max reject otherwise valid responses
2003 caused by either OCSP responder or client clock inaccuracy. Instead
2004 we allow thisUpdate and nextUpdate to fall within a certain period of
2005 the current time. The age of the response can also optionally be
2006 checked. Two new options -validity_period and -status_age added to
2010 *) If signature or public key algorithm is unrecognized print out its
2011 OID rather that just UNKNOWN.
2014 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2015 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2016 ID to be generated from the issuer certificate alone which can then be
2017 passed to OCSP_id_issuer_cmp().
2020 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2021 ASN1 modules to export functions returning ASN1_ITEM pointers
2022 instead of the ASN1_ITEM structures themselves. This adds several
2023 new macros which allow the underlying ASN1 function/structure to
2024 be accessed transparently. As a result code should not use ASN1_ITEM
2025 references directly (such as &X509_it) but instead use the relevant
2026 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2027 use of the new ASN1 code on platforms where exporting structures
2028 is problematical (for example in shared libraries) but exporting
2029 functions returning pointers to structures is not.
2032 *) Add support for overriding the generation of SSL/TLS session IDs.
2033 These callbacks can be registered either in an SSL_CTX or per SSL.
2034 The purpose of this is to allow applications to control, if they wish,
2035 the arbitrary values chosen for use as session IDs, particularly as it
2036 can be useful for session caching in multiple-server environments. A
2037 command-line switch for testing this (and any client code that wishes
2038 to use such a feature) has been added to "s_server".
2039 [Geoff Thorpe, Lutz Jaenicke]
2041 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2042 of the form '#if defined(...) || defined(...) || ...' and
2043 '#if !defined(...) && !defined(...) && ...'. This also avoids
2044 the growing number of special cases it was previously handling.
2047 *) Make all configuration macros available for application by making
2048 sure they are available in opensslconf.h, by giving them names starting
2049 with "OPENSSL_" to avoid conflicts with other packages and by making
2050 sure e_os2.h will cover all platform-specific cases together with
2052 Additionally, it is now possible to define configuration/platform-
2053 specific names (called "system identities"). In the C code, these
2054 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2055 macro with the name beginning with "OPENSSL_SYS_", which is determined
2056 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2060 *) New option -set_serial to 'req' and 'x509' this allows the serial
2061 number to use to be specified on the command line. Previously self
2062 signed certificates were hard coded with serial number 0 and the
2063 CA options of 'x509' had to use a serial number in a file which was
2067 *) New options to 'ca' utility to support V2 CRL entry extensions.
2068 Currently CRL reason, invalidity date and hold instruction are
2069 supported. Add new CRL extensions to V3 code and some new objects.
2072 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2073 disable standard block padding (aka PKCS#5 padding) in the EVP
2074 API, which was previously mandatory. This means that the data is
2075 not padded in any way and so the total length much be a multiple
2076 of the block size, otherwise an error occurs.
2079 *) Initial (incomplete) OCSP SSL support.
2082 *) New function OCSP_parse_url(). This splits up a URL into its host,
2083 port and path components: primarily to parse OCSP URLs. New -url
2084 option to ocsp utility.
2087 *) New nonce behavior. The return value of OCSP_check_nonce() now
2088 reflects the various checks performed. Applications can decide
2089 whether to tolerate certain situations such as an absent nonce
2090 in a response when one was present in a request: the ocsp application
2091 just prints out a warning. New function OCSP_add1_basic_nonce()
2092 this is to allow responders to include a nonce in a response even if
2093 the request is nonce-less.
2096 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2097 skipped when using openssl x509 multiple times on a single input file,
2098 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2101 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2102 set string type: to handle setting ASN1_TIME structures. Fix ca
2103 utility to correctly initialize revocation date of CRLs.
2106 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2107 the clients preferred ciphersuites and rather use its own preferences.
2108 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2109 Internet Explorer by ensuring unchanged hash method during stepup.
2110 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2113 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2114 to aes and add a new 'exist' option to print out symbols that don't
2118 *) Additional options to ocsp utility to allow flags to be set and
2119 additional certificates supplied.
2122 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2123 OCSP client a number of certificate to only verify the response
2127 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2128 handle the new API. Currently only ECB, CBC modes supported. Add new
2131 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2132 Encryption Standard (AES) Ciphersuites for Transport Layer
2133 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2134 not enabled by default and were not part of the "ALL" ciphersuite
2135 alias because they were not yet official; they could be
2136 explicitly requested by specifying the "AESdraft" ciphersuite
2137 group alias. In the final release of OpenSSL 0.9.7, the group
2138 alias is called "AES" and is part of "ALL".)
2139 [Ben Laurie, Steve Henson, Bodo Moeller]
2141 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2142 request to response.
2145 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2146 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2147 extract information from a certificate request. OCSP_response_create()
2148 creates a response and optionally adds a basic response structure.
2149 OCSP_basic_add1_status() adds a complete single response to a basic
2150 response and returns the OCSP_SINGLERESP structure just added (to allow
2151 extensions to be included for example). OCSP_basic_add1_cert() adds a
2152 certificate to a basic response and OCSP_basic_sign() signs a basic
2153 response with various flags. New helper functions ASN1_TIME_check()
2154 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2155 (converts ASN1_TIME to GeneralizedTime).
2158 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2159 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2160 structure from a certificate. X509_pubkey_digest() digests the public_key
2161 contents: this is used in various key identifiers.
2164 *) Make sk_sort() tolerate a NULL argument.
2165 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2167 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2168 passed by the function are trusted implicitly. If any of them signed the
2169 response then it is assumed to be valid and is not verified.
2172 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2173 to data. This was previously part of the PKCS7 ASN1 code. This
2174 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2175 [Steve Henson, reported by Kenneth R. Robinette
2176 <support@securenetterm.com>]
2178 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2179 routines: without these tracing memory leaks is very painful.
2180 Fix leaks in PKCS12 and PKCS7 routines.
2183 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2184 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2185 effectively meant GeneralizedTime would never be used. Now it
2186 is initialised to -1 but X509_time_adj() now has to check the value
2187 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2188 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2189 [Steve Henson, reported by Kenneth R. Robinette
2190 <support@securenetterm.com>]
2192 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2193 result in a zero length in the ASN1_INTEGER structure which was
2194 not consistent with the structure when d2i_ASN1_INTEGER() was used
2195 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2196 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2197 where it did not print out a minus for negative ASN1_INTEGER.
2200 *) Add summary printout to ocsp utility. The various functions which
2201 convert status values to strings have been renamed to:
2202 OCSP_response_status_str(), OCSP_cert_status_str() and
2203 OCSP_crl_reason_str() and are no longer static. New options
2204 to verify nonce values and to disable verification. OCSP response
2205 printout format cleaned up.
2208 *) Add additional OCSP certificate checks. These are those specified
2209 in RFC2560. This consists of two separate checks: the CA of the
2210 certificate being checked must either be the OCSP signer certificate
2211 or the issuer of the OCSP signer certificate. In the latter case the
2212 OCSP signer certificate must contain the OCSP signing extended key
2213 usage. This check is performed by attempting to match the OCSP
2214 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2215 in the OCSP_CERTID structures of the response.
2218 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2219 and related routines. This uses the standard OpenSSL certificate
2220 verify routines to perform initial checks (just CA validity) and
2221 to obtain the certificate chain. Then additional checks will be
2222 performed on the chain. Currently the root CA is checked to see
2223 if it is explicitly trusted for OCSP signing. This is used to set
2224 a root CA as a global signing root: that is any certificate that
2225 chains to that CA is an acceptable OCSP signing certificate.
2228 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2229 extensions from a separate configuration file.
2230 As when reading extensions from the main configuration file,
2231 the '-extensions ...' option may be used for specifying the
2233 [Massimiliano Pala <madwolf@comune.modena.it>]
2235 *) New OCSP utility. Allows OCSP requests to be generated or
2236 read. The request can be sent to a responder and the output
2237 parsed, outputed or printed in text form. Not complete yet:
2238 still needs to check the OCSP response validity.
2241 *) New subcommands for 'openssl ca':
2242 'openssl ca -status <serial>' prints the status of the cert with
2243 the given serial number (according to the index file).
2244 'openssl ca -updatedb' updates the expiry status of certificates
2246 [Massimiliano Pala <madwolf@comune.modena.it>]
2248 *) New '-newreq-nodes' command option to CA.pl. This is like
2249 '-newreq', but calls 'openssl req' with the '-nodes' option
2250 so that the resulting key is not encrypted.
2251 [Damien Miller <djm@mindrot.org>]
2253 *) New configuration for the GNU Hurd.
2254 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2256 *) Initial code to implement OCSP basic response verify. This
2257 is currently incomplete. Currently just finds the signer's
2258 certificate and verifies the signature on the response.
2261 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2262 value of OPENSSLDIR. This is available via the new '-d' option
2263 to 'openssl version', and is also included in 'openssl version -a'.
2266 *) Allowing defining memory allocation callbacks that will be given
2267 file name and line number information in additional arguments
2268 (a const char* and an int). The basic functionality remains, as
2269 well as the original possibility to just replace malloc(),
2270 realloc() and free() by functions that do not know about these
2271 additional arguments. To register and find out the current
2272 settings for extended allocation functions, the following
2273 functions are provided:
2275 CRYPTO_set_mem_ex_functions
2276 CRYPTO_set_locked_mem_ex_functions
2277 CRYPTO_get_mem_ex_functions
2278 CRYPTO_get_locked_mem_ex_functions
2280 These work the same way as CRYPTO_set_mem_functions and friends.
2281 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2282 extended allocation function is enabled.
2283 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2284 a conventional allocation function is enabled.
2285 [Richard Levitte, Bodo Moeller]
2287 *) Finish off removing the remaining LHASH function pointer casts.
2288 There should no longer be any prototype-casting required when using
2289 the LHASH abstraction, and any casts that remain are "bugs". See
2290 the callback types and macros at the head of lhash.h for details
2291 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2294 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2295 If /dev/[u]random devices are not available or do not return enough
2296 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2298 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2299 /etc/entropy will be queried once each in this sequence, quering stops
2300 when enough entropy was collected without querying more sockets.
2303 *) Change the Unix RAND_poll() variant to be able to poll several
2304 random devices, as specified by DEVRANDOM, until a sufficient amount
2305 of data has been collected. We spend at most 10 ms on each file
2306 (select timeout) and read in non-blocking mode. DEVRANDOM now
2307 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2308 (previously it was just the string "/dev/urandom"), so on typical
2309 platforms the 10 ms delay will never occur.
2310 Also separate out the Unix variant to its own file, rand_unix.c.
2311 For VMS, there's a currently-empty rand_vms.c.
2314 *) Move OCSP client related routines to ocsp_cl.c. These
2315 provide utility functions which an application needing
2316 to issue a request to an OCSP responder and analyse the
2317 response will typically need: as opposed to those which an
2318 OCSP responder itself would need which will be added later.
2320 OCSP_request_sign() signs an OCSP request with an API similar
2321 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2322 response. OCSP_response_get1_basic() extracts basic response
2323 from response. OCSP_resp_find_status(): finds and extracts status
2324 information from an OCSP_CERTID structure (which will be created
2325 when the request structure is built). These are built from lower
2326 level functions which work on OCSP_SINGLERESP structures but
2327 wont normally be used unless the application wishes to examine
2328 extensions in the OCSP response for example.
2330 Replace nonce routines with a pair of functions.
2331 OCSP_request_add1_nonce() adds a nonce value and optionally
2332 generates a random value. OCSP_check_nonce() checks the
2333 validity of the nonce in an OCSP response.
2336 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2337 This doesn't copy the supplied OCSP_CERTID and avoids the
2338 need to free up the newly created id. Change return type
2339 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2340 This can then be used to add extensions to the request.
2341 Deleted OCSP_request_new(), since most of its functionality
2342 is now in OCSP_REQUEST_new() (and the case insensitive name
2343 clash) apart from the ability to set the request name which
2344 will be added elsewhere.
2347 *) Update OCSP API. Remove obsolete extensions argument from
2348 various functions. Extensions are now handled using the new
2349 OCSP extension code. New simple OCSP HTTP function which
2350 can be used to send requests and parse the response.
2353 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2354 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2355 uses the special reorder version of SET OF to sort the attributes
2356 and reorder them to match the encoded order. This resolves a long
2357 standing problem: a verify on a PKCS7 structure just after signing
2358 it used to fail because the attribute order did not match the
2359 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2360 it uses the received order. This is necessary to tolerate some broken
2361 software that does not order SET OF. This is handled by encoding
2362 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2363 to produce the required SET OF.
2366 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2367 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2368 files to get correct declarations of the ASN.1 item variables.
2371 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2372 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2373 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2374 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2375 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2376 ASN1_ITEM and no wrapper functions.
2379 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2380 replace the old function pointer based I/O routines. Change most of
2381 the *_d2i_bio() and *_d2i_fp() functions to use these.
2384 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2385 lines, recognice more "algorithms" that can be deselected, and make
2386 it complain about algorithm deselection that isn't recognised.
2389 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2390 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2391 to use new functions. Add NO_ASN1_OLD which can be set to remove
2392 some old style ASN1 functions: this can be used to determine if old
2393 code will still work when these eventually go away.
2396 *) New extension functions for OCSP structures, these follow the
2397 same conventions as certificates and CRLs.
2400 *) New function X509V3_add1_i2d(). This automatically encodes and
2401 adds an extension. Its behaviour can be customised with various
2402 flags to append, replace or delete. Various wrappers added for
2403 certifcates and CRLs.
2406 *) Fix to avoid calling the underlying ASN1 print routine when
2407 an extension cannot be parsed. Correct a typo in the
2408 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2411 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2412 entries for variables.
2415 *) Add functionality to apps/openssl.c for detecting locking
2416 problems: As the program is single-threaded, all we have
2417 to do is register a locking callback using an array for
2418 storing which locks are currently held by the program.
2421 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2422 SSL_get_ex_data_X509_STORE_idx(), which is used in
2423 ssl_verify_cert_chain() and thus can be called at any time
2424 during TLS/SSL handshakes so that thread-safety is essential.
2425 Unfortunately, the ex_data design is not at all suited
2426 for multi-threaded use, so it probably should be abolished.
2429 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2430 [Broadcom, tweaked and integrated by Geoff Thorpe]
2432 *) Move common extension printing code to new function
2433 X509V3_print_extensions(). Reorganise OCSP print routines and
2434 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2437 *) New function X509_signature_print() to remove duplication in some
2441 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2442 set (this was treated exactly the same as SET OF previously). This
2443 is used to reorder the STACK representing the structure to match the
2444 encoding. This will be used to get round a problem where a PKCS7
2445 structure which was signed could not be verified because the STACK
2446 order did not reflect the encoded order.
2449 *) Reimplement the OCSP ASN1 module using the new code.
2452 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2453 for its ASN1 operations. The old style function pointers still exist
2454 for now but they will eventually go away.
2457 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2458 completely replaces the old ASN1 functionality with a table driven
2459 encoder and decoder which interprets an ASN1_ITEM structure describing
2460 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2461 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2462 has also been converted to the new form.
2465 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2466 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2467 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2468 for negative moduli.
2471 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2472 of not touching the result's sign bit.
2475 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2479 *) Changed the LHASH code to use prototypes for callbacks, and created
2480 macros to declare and implement thin (optionally static) functions
2481 that provide type-safety and avoid function pointer casting for the
2482 type-specific callbacks.
2485 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2487 [Veers Staats <staatsvr@asc.hpc.mil>,
2488 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2490 *) Reformat the FAQ so the different questions and answers can be divided
2491 in sections depending on the subject.
2494 *) Have the zlib compression code load ZLIB.DLL dynamically under
2498 *) New function BN_mod_sqrt for computing square roots modulo a prime
2499 (using the probabilistic Tonelli-Shanks algorithm unless
2500 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2501 be handled deterministically).
2502 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2504 *) Make BN_mod_inverse faster by explicitly handling small quotients
2505 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2506 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2509 *) New function BN_kronecker.
2512 *) Fix BN_gcd so that it works on negative inputs; the result is
2513 positive unless both parameters are zero.
2514 Previously something reasonably close to an infinite loop was
2515 possible because numbers could be growing instead of shrinking
2516 in the implementation of Euclid's algorithm.
2519 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2520 sign of the number in question.
2522 Fix BN_is_word(a,w) to work correctly for w == 0.
2524 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2525 because its test if the absolute value of 'a' equals 'w'.
2526 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2527 it exists mostly for use in the implementations of BN_is_zero(),
2528 BN_is_one(), and BN_is_word().
2531 *) New function BN_swap.
2534 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2535 the exponentiation functions are more likely to produce reasonable
2536 results on negative inputs.
2539 *) Change BN_mod_mul so that the result is always non-negative.
2540 Previously, it could be negative if one of the factors was negative;
2541 I don't think anyone really wanted that behaviour.
2544 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2545 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2546 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2547 and add new functions:
2556 BN_mod_lshift1_quick
2560 These functions always generate non-negative results.
2562 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2563 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2565 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2566 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2567 be reduced modulo m.
2568 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2571 The following entry accidentily appeared in the CHANGES file
2572 distributed with OpenSSL 0.9.7. The modifications described in
2573 it do *not* apply to OpenSSL 0.9.7.
2575 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2576 was actually never needed) and in BN_mul(). The removal in BN_mul()
2577 required a small change in bn_mul_part_recursive() and the addition
2578 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2579 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2580 bn_sub_words() and bn_add_words() except they take arrays with
2585 *) In 'openssl passwd', verify passwords read from the terminal
2586 unless the '-salt' option is used (which usually means that
2587 verification would just waste user's time since the resulting
2588 hash is going to be compared with some given password hash)
2589 or the new '-noverify' option is used.
2591 This is an incompatible change, but it does not affect
2592 non-interactive use of 'openssl passwd' (passwords on the command
2593 line, '-stdin' option, '-in ...' option) and thus should not
2597 *) Remove all references to RSAref, since there's no more need for it.
2600 *) Make DSO load along a path given through an environment variable
2601 (SHLIB_PATH) with shl_load().
2604 *) Constify the ENGINE code as a result of BIGNUM constification.
2605 Also constify the RSA code and most things related to it. In a
2606 few places, most notable in the depth of the ASN.1 code, ugly
2607 casts back to non-const were required (to be solved at a later
2611 *) Make it so the openssl application has all engines loaded by default.
2614 *) Constify the BIGNUM routines a little more.
2617 *) Add the following functions:
2619 ENGINE_load_cswift()
2621 ENGINE_load_atalla()
2623 ENGINE_load_builtin_engines()
2625 That way, an application can itself choose if external engines that
2626 are built-in in OpenSSL shall ever be used or not. The benefit is
2627 that applications won't have to be linked with libdl or other dso
2628 libraries unless it's really needed.
2630 Changed 'openssl engine' to load all engines on demand.
2631 Changed the engine header files to avoid the duplication of some
2632 declarations (they differed!).
2635 *) 'openssl engine' can now list capabilities.
2638 *) Better error reporting in 'openssl engine'.
2641 *) Never call load_dh_param(NULL) in s_server.
2644 *) Add engine application. It can currently list engines by name and
2645 identity, and test if they are actually available.
2648 *) Improve RPM specification file by forcing symbolic linking and making
2649 sure the installed documentation is also owned by root.root.
2650 [Damien Miller <djm@mindrot.org>]
2652 *) Give the OpenSSL applications more possibilities to make use of
2653 keys (public as well as private) handled by engines.
2656 *) Add OCSP code that comes from CertCo.
2659 *) Add VMS support for the Rijndael code.
2662 *) Added untested support for Nuron crypto accelerator.
2665 *) Add support for external cryptographic devices. This code was
2666 previously distributed separately as the "engine" branch.
2667 [Geoff Thorpe, Richard Levitte]
2669 *) Rework the filename-translation in the DSO code. It is now possible to
2670 have far greater control over how a "name" is turned into a filename
2671 depending on the operating environment and any oddities about the
2672 different shared library filenames on each system.
2675 *) Support threads on FreeBSD-elf in Configure.
2678 *) Fix for SHA1 assembly problem with MASM: it produces
2679 warnings about corrupt line number information when assembling
2680 with debugging information. This is caused by the overlapping
2682 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2685 NCONF_get_number() has no error checking at all. As a replacement,
2686 NCONF_get_number_e() is defined (_e for "error checking") and is
2687 promoted strongly. The old NCONF_get_number is kept around for
2688 binary backward compatibility.
2689 Make it possible for methods to load from something other than a BIO,
2690 by providing a function pointer that is given a name instead of a BIO.
2691 For example, this could be used to load configuration data from an
2695 *) Fix for non blocking accept BIOs. Added new I/O special reason
2696 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2697 with non blocking I/O was not possible because no retry code was
2698 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2702 *) Added the beginnings of Rijndael support.
2705 *) Fix for bug in DirectoryString mask setting. Add support for
2706 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2707 to allow certificate printing to more controllable, additional
2708 'certopt' option to 'x509' to allow new printing options to be
2712 *) Clean old EAY MD5 hack from e_os.h.
2715 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
2717 *) Fix various bugs revealed by running the NISCC test suite:
2719 Stop out of bounds reads in the ASN1 code when presented with
2720 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2722 If verify callback ignores invalid public key errors don't try to check
2723 certificate signature with the NULL public key.
2727 *) Fix various bugs revealed by running the NISCC test suite:
2729 Stop out of bounds reads in the ASN1 code when presented with
2730 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2732 If verify callback ignores invalid public key errors don't try to check
2733 certificate signature with the NULL public key.
2737 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2738 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2742 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2743 extra data after the compression methods not only for TLS 1.0
2744 but also for SSL 3.0 (as required by the specification).
2745 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2747 *) Change X509_certificate_type() to mark the key as exported/exportable
2748 when it's 512 *bits* long, not 512 bytes.
2751 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
2753 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2754 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2755 a protocol version number mismatch like a decryption error
2756 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2759 *) Turn on RSA blinding by default in the default implementation
2760 to avoid a timing attack. Applications that don't want it can call
2761 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2762 They would be ill-advised to do so in most cases.
2763 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2765 *) Change RSA blinding code so that it works when the PRNG is not
2766 seeded (in this case, the secret RSA exponent is abused as
2767 an unpredictable seed -- if it is not unpredictable, there
2768 is no point in blinding anyway). Make RSA blinding thread-safe
2769 by remembering the creator's thread ID in rsa->blinding and
2770 having all other threads use local one-time blinding factors
2771 (this requires more computation than sharing rsa->blinding, but
2772 avoids excessive locking; and if an RSA object is not shared
2773 between threads, blinding will still be very fast).
2776 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
2778 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2779 via timing by performing a MAC computation even if incorrrect
2780 block cipher padding has been found. This is a countermeasure
2781 against active attacks where the attacker has to distinguish
2782 between bad padding and a MAC verification error. (CAN-2003-0078)
2784 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2785 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2786 Martin Vuagnoux (EPFL, Ilion)]
2788 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2790 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2791 memory from it's contents. This is done with a counter that will
2792 place alternating values in each byte. This can be used to solve
2793 two issues: 1) the removal of calls to memset() by highly optimizing
2794 compilers, and 2) cleansing with other values than 0, since those can
2795 be read through on certain media, for example a swap space on disk.
2798 *) Bugfix: client side session caching did not work with external caching,
2799 because the session->cipher setting was not restored when reloading
2800 from the external cache. This problem was masked, when
2801 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
2802 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
2805 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
2806 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
2807 [Zeev Lieber <zeev-l@yahoo.com>]
2809 *) Undo an undocumented change introduced in 0.9.6e which caused
2810 repeated calls to OpenSSL_add_all_ciphers() and
2811 OpenSSL_add_all_digests() to be ignored, even after calling
2815 *) Change the default configuration reader to deal with last line not
2816 being properly terminated.
2819 *) Change X509_NAME_cmp() so it applies the special rules on handling
2820 DN values that are of type PrintableString, as well as RDNs of type
2821 emailAddress where the value has the type ia5String.
2822 [stefank@valicert.com via Richard Levitte]
2824 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
2825 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
2826 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
2827 the bitwise-OR of the two for use by the majority of applications
2828 wanting this behaviour, and update the docs. The documented
2829 behaviour and actual behaviour were inconsistent and had been
2830 changing anyway, so this is more a bug-fix than a behavioural
2832 [Geoff Thorpe, diagnosed by Nadav Har'El]
2834 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
2835 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
2838 *) Fix initialization code race conditions in
2839 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
2840 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
2841 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
2842 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
2843 ssl2_get_cipher_by_char(),
2844 ssl3_get_cipher_by_char().
2845 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
2847 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
2848 the cached sessions are flushed, as the remove_cb() might use ex_data
2849 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
2850 (see [openssl.org #212]).
2851 [Geoff Thorpe, Lutz Jaenicke]
2853 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
2854 length, instead of the encoding length to d2i_ASN1_OBJECT.
2857 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
2859 *) [In 0.9.6g-engine release:]
2860 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
2861 [Lynn Gazis <lgazis@rainbow.com>]
2863 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
2865 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
2866 and get fix the header length calculation.
2867 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
2868 Alon Kantor <alonk@checkpoint.com> (and others),
2871 *) Use proper error handling instead of 'assertions' in buffer
2872 overflow checks added in 0.9.6e. This prevents DoS (the
2873 assertions could call abort()).
2874 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
2876 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
2878 *) Add various sanity checks to asn1_get_length() to reject
2879 the ASN1 length bytes if they exceed sizeof(long), will appear
2880 negative or the content length exceeds the length of the
2882 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2884 *) Fix cipher selection routines: ciphers without encryption had no flags
2885 for the cipher strength set and where therefore not handled correctly
2886 by the selection routines (PR #130).
2889 *) Fix EVP_dsa_sha macro.
2893 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
2894 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
2895 that was added in OpenSSL 0.9.6d.
2897 As the countermeasure turned out to be incompatible with some
2898 broken SSL implementations, the new option is part of SSL_OP_ALL.
2899 SSL_OP_ALL is usually employed when compatibility with weird SSL
2900 implementations is desired (e.g. '-bugs' option to 's_client' and
2901 's_server'), so the new option is automatically set in many
2905 *) Changes in security patch:
2907 Changes marked "(CHATS)" were sponsored by the Defense Advanced
2908 Research Projects Agency (DARPA) and Air Force Research Laboratory,
2909 Air Force Materiel Command, USAF, under agreement number
2912 *) Add various sanity checks to asn1_get_length() to reject
2913 the ASN1 length bytes if they exceed sizeof(long), will appear
2914 negative or the content length exceeds the length of the
2915 supplied buffer. (CAN-2002-0659)
2916 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2918 *) Assertions for various potential buffer overflows, not known to
2920 [Ben Laurie (CHATS)]
2922 *) Various temporary buffers to hold ASCII versions of integers were
2923 too small for 64 bit platforms. (CAN-2002-0655)
2924 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
2926 *) Remote buffer overflow in SSL3 protocol - an attacker could
2927 supply an oversized session ID to a client. (CAN-2002-0656)
2928 [Ben Laurie (CHATS)]
2930 *) Remote buffer overflow in SSL2 protocol - an attacker could
2931 supply an oversized client master key. (CAN-2002-0656)
2932 [Ben Laurie (CHATS)]
2934 Changes between 0.9.6c and 0.9.6d [9 May 2002]
2936 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
2937 encoded as NULL) with id-dsa-with-sha1.
2938 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
2940 *) Check various X509_...() return values in apps/req.c.
2941 [Nils Larsch <nla@trustcenter.de>]
2943 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
2944 an end-of-file condition would erronously be flagged, when the CRLF
2945 was just at the end of a processed block. The bug was discovered when
2946 processing data through a buffering memory BIO handing the data to a
2947 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
2948 <ptsekov@syntrex.com> and Nedelcho Stanev.
2951 *) Implement a countermeasure against a vulnerability recently found
2952 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
2953 before application data chunks to avoid the use of known IVs
2954 with data potentially chosen by the attacker.
2957 *) Fix length checks in ssl3_get_client_hello().
2960 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
2961 to prevent ssl3_read_internal() from incorrectly assuming that
2962 ssl3_read_bytes() found application data while handshake
2963 processing was enabled when in fact s->s3->in_read_app_data was
2964 merely automatically cleared during the initial handshake.
2965 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
2967 *) Fix object definitions for Private and Enterprise: they were not
2968 recognized in their shortname (=lowercase) representation. Extend
2969 obj_dat.pl to issue an error when using undefined keywords instead
2970 of silently ignoring the problem (Svenning Sorensen
2971 <sss@sss.dnsalias.net>).
2974 *) Fix DH_generate_parameters() so that it works for 'non-standard'
2975 generators, i.e. generators other than 2 and 5. (Previously, the
2976 code did not properly initialise the 'add' and 'rem' values to
2977 BN_generate_prime().)
2979 In the new general case, we do not insist that 'generator' is
2980 actually a primitive root: This requirement is rather pointless;
2981 a generator of the order-q subgroup is just as good, if not
2985 *) Map new X509 verification errors to alerts. Discovered and submitted by
2986 Tom Wu <tom@arcot.com>.
2989 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
2990 returning non-zero before the data has been completely received
2991 when using non-blocking I/O.
2992 [Bodo Moeller; problem pointed out by John Hughes]
2994 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
2995 [Ben Laurie, Lutz Jaenicke]
2997 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
2998 Yoram Zahavi <YoramZ@gilian.com>).
3001 *) Add information about CygWin 1.3 and on, and preserve proper
3002 configuration for the versions before that.
3003 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3005 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3006 check whether we deal with a copy of a session and do not delete from
3007 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3008 <izhar@checkpoint.com>.
3011 *) Do not store session data into the internal session cache, if it
3012 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3013 flag is set). Proposed by Aslam <aslam@funk.com>.
3016 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3020 *) [In 0.9.6d-engine release:]
3021 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3022 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3024 *) Add the configuration target linux-s390x.
3025 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3027 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3028 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3029 variable as an indication that a ClientHello message has been
3030 received. As the flag value will be lost between multiple
3031 invocations of ssl3_accept when using non-blocking I/O, the
3032 function may not be aware that a handshake has actually taken
3033 place, thus preventing a new session from being added to the
3036 To avoid this problem, we now set s->new_session to 2 instead of
3037 using a local variable.
3038 [Lutz Jaenicke, Bodo Moeller]
3040 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3041 if the SSL_R_LENGTH_MISMATCH error is detected.
3042 [Geoff Thorpe, Bodo Moeller]
3044 *) New 'shared_ldflag' column in Configure platform table.
3047 *) Fix EVP_CIPHER_mode macro.
3048 ["Dan S. Camper" <dan@bti.net>]
3050 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3051 type, we must throw them away by setting rr->length to 0.
3052 [D P Chang <dpc@qualys.com>]
3054 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3056 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3057 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3058 worked incorrectly for those cases where range = 10..._2 and
3059 3*range is two bits longer than range.)
3062 *) Only add signing time to PKCS7 structures if it is not already
3066 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3067 OBJ_ld_ce should be OBJ_id_ce.
3068 Also some ip-pda OIDs in crypto/objects/objects.txt were
3069 incorrect (cf. RFC 3039).
3070 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3072 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3073 returns early because it has nothing to do.
3074 [Andy Schneider <andy.schneider@bjss.co.uk>]
3076 *) [In 0.9.6c-engine release:]
3077 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3078 [Andy Schneider <andy.schneider@bjss.co.uk>]
3080 *) [In 0.9.6c-engine release:]
3081 Add support for Cryptographic Appliance's keyserver technology.
3082 (Use engine 'keyclient')
3083 [Cryptographic Appliances and Geoff Thorpe]
3085 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3086 is called via tools/c89.sh because arguments have to be
3087 rearranged (all '-L' options must appear before the first object
3089 [Richard Shapiro <rshapiro@abinitio.com>]
3091 *) [In 0.9.6c-engine release:]
3092 Add support for Broadcom crypto accelerator cards, backported
3094 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3096 *) [In 0.9.6c-engine release:]
3097 Add support for SureWare crypto accelerator cards from
3098 Baltimore Technologies. (Use engine 'sureware')
3099 [Baltimore Technologies and Mark Cox]
3101 *) [In 0.9.6c-engine release:]
3102 Add support for crypto accelerator cards from Accelerated
3103 Encryption Processing, www.aep.ie. (Use engine 'aep')
3104 [AEP Inc. and Mark Cox]
3106 *) Add a configuration entry for gcc on UnixWare.
3107 [Gary Benson <gbenson@redhat.com>]
3109 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3110 messages are stored in a single piece (fixed-length part and
3111 variable-length part combined) and fix various bugs found on the way.
3114 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3115 instead. BIO_gethostbyname() does not know what timeouts are
3116 appropriate, so entries would stay in cache even when they have
3118 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3120 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3121 faced with a pathologically small ClientHello fragment that does
3122 not contain client_version: Instead of aborting with an error,
3123 simply choose the highest available protocol version (i.e.,
3124 TLS 1.0 unless it is disabled). In practice, ClientHello
3125 messages are never sent like this, but this change gives us
3126 strictly correct behaviour at least for TLS.
3129 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3130 never resets s->method to s->ctx->method when called from within
3131 one of the SSL handshake functions.
3132 [Bodo Moeller; problem pointed out by Niko Baric]
3134 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3135 (sent using the client's version number) if client_version is
3136 smaller than the protocol version in use. Also change
3137 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3138 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3139 the client will at least see that alert.
3142 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3146 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3147 client receives HelloRequest while in a handshake.
3148 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3150 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3151 should end in 'break', not 'goto end' which circuments various
3152 cleanups done in state SSL_ST_OK. But session related stuff
3153 must be disabled for SSL_ST_OK in the case that we just sent a
3156 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3157 before just sending a HelloRequest.
3158 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3160 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3161 reveal whether illegal block cipher padding was found or a MAC
3162 verification error occured. (Neither SSLerr() codes nor alerts
3163 are directly visible to potential attackers, but the information
3164 may leak via logfiles.)
3166 Similar changes are not required for the SSL 2.0 implementation
3167 because the number of padding bytes is sent in clear for SSL 2.0,
3168 and the extra bytes are just ignored. However ssl/s2_pkt.c
3169 failed to verify that the purported number of padding bytes is in
3173 *) Add OpenUNIX-8 support including shared libraries
3174 (Boyd Lynn Gerber <gerberb@zenez.com>).
3177 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3178 'wristwatch attack' using huge encoding parameters (cf.
3179 James H. Manger's CRYPTO 2001 paper). Note that the
3180 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3181 encoding parameters and hence was not vulnerable.
3184 *) BN_sqr() bug fix.
3185 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3187 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3188 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3189 followed by modular reduction.
3190 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3192 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3193 equivalent based on BN_pseudo_rand() instead of BN_rand().
3196 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3197 This function was broken, as the check for a new client hello message
3198 to handle SGC did not allow these large messages.
3199 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3202 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3205 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3206 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3209 *) Rework the configuration and shared library support for Tru64 Unix.
3210 The configuration part makes use of modern compiler features and
3211 still retains old compiler behavior for those that run older versions
3212 of the OS. The shared library support part includes a variant that
3213 uses the RPATH feature, and is available through the special
3214 configuration target "alpha-cc-rpath", which will never be selected
3216 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3218 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3219 with the same message size as in ssl3_get_certificate_request().
3220 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3221 messages might inadvertently be reject as too long.
3222 [Petr Lampa <lampa@fee.vutbr.cz>]
3224 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3227 *) Modified SSL library such that the verify_callback that has been set
3228 specificly for an SSL object with SSL_set_verify() is actually being
3229 used. Before the change, a verify_callback set with this function was
3230 ignored and the verify_callback() set in the SSL_CTX at the time of
3231 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3232 to allow the necessary settings.
3235 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3236 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3237 done automatically (in contradiction to the requirements of the C
3238 standard). This made problems when used from OpenSSH.
3241 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3242 dh->length and always used
3244 BN_rand_range(priv_key, dh->p).
3246 BN_rand_range() is not necessary for Diffie-Hellman, and this
3247 specific range makes Diffie-Hellman unnecessarily inefficient if
3248 dh->length (recommended exponent length) is much smaller than the
3249 length of dh->p. We could use BN_rand_range() if the order of
3250 the subgroup was stored in the DH structure, but we only have
3255 BN_rand(priv_key, l, ...)
3257 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3263 RSA_eay_public_encrypt
3264 RSA_eay_private_decrypt
3265 RSA_eay_private_encrypt (signing)
3266 RSA_eay_public_decrypt (signature verification)
3268 (default implementations for RSA_public_encrypt,
3269 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3270 always reject numbers >= n.
3273 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3274 to synchronize access to 'locking_thread'. This is necessary on
3275 systems where access to 'locking_thread' (an 'unsigned long'
3276 variable) is not atomic.
3279 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3280 *before* setting the 'crypto_lock_rand' flag. The previous code had
3281 a race condition if 0 is a valid thread ID.
3282 [Travis Vitek <vitek@roguewave.com>]
3284 *) Add support for shared libraries under Irix.
3285 [Albert Chin-A-Young <china@thewrittenword.com>]
3287 *) Add configuration option to build on Linux on both big-endian and
3289 [Ralf Baechle <ralf@uni-koblenz.de>]
3291 *) Add the possibility to create shared libraries on HP-UX.
3294 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3296 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3297 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3298 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3299 PRNG state recovery was possible based on the output of
3300 one PRNG request appropriately sized to gain knowledge on
3301 'md' followed by enough consecutive 1-byte PRNG requests
3302 to traverse all of 'state'.
3304 1. When updating 'md_local' (the current thread's copy of 'md')
3305 during PRNG output generation, hash all of the previous
3306 'md_local' value, not just the half used for PRNG output.
3308 2. Make the number of bytes from 'state' included into the hash
3309 independent from the number of PRNG bytes requested.
3311 The first measure alone would be sufficient to avoid
3312 Markku-Juhani's attack. (Actually it had never occurred
3313 to me that the half of 'md_local' used for chaining was the
3314 half from which PRNG output bytes were taken -- I had always
3315 assumed that the secret half would be used.) The second
3316 measure makes sure that additional data from 'state' is never
3317 mixed into 'md_local' in small portions; this heuristically
3318 further strengthens the PRNG.
3321 *) Fix crypto/bn/asm/mips3.s.
3324 *) When only the key is given to "enc", the IV is undefined. Print out
3325 an error message in this case.
3328 *) Handle special case when X509_NAME is empty in X509 printing routines.
3331 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3332 positive and less than q.
3335 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3336 used: it isn't thread safe and the add_lock_callback should handle
3338 [Paul Rose <Paul.Rose@bridge.com>]
3340 *) Verify that incoming data obeys the block size in
3341 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3345 [Ulf Möller, Bodo Möller]
3347 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3348 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3349 when fixing the server behaviour for backwards-compatible 'client
3350 hello' messages. (Note that the attack is impractical against
3351 SSL 3.0 and TLS 1.0 anyway because length and version checking
3352 means that the probability of guessing a valid ciphertext is
3353 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3356 Before 0.9.5, the countermeasure (hide the error by generating a
3357 random 'decryption result') did not work properly because
3358 ERR_clear_error() was missing, meaning that SSL_get_error() would
3359 detect the supposedly ignored error.
3361 Both problems are now fixed.
3364 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3365 (previously it was 1024).
3368 *) Fix for compatibility mode trust settings: ignore trust settings
3369 unless some valid trust or reject settings are present.
3372 *) Fix for blowfish EVP: its a variable length cipher.
3375 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3376 parameters in DSA public key structures and return an error in the
3377 DSA routines if parameters are absent.
3380 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3381 in the current directory if neither $RANDFILE nor $HOME was set.
3382 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3383 caused some confusion to Windows users who haven't defined $HOME.
3384 Thus RAND_file_name() is changed again: e_os.h can define a
3385 DEFAULT_HOME, which will be used if $HOME is not set.
3386 For Windows, we use "C:"; on other platforms, we still require
3387 environment variables.
3389 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3390 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3391 having multiple threads call RAND_poll() concurrently.
3394 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3395 combination of a flag and a thread ID variable.
3396 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3397 flag), *other* threads can enter ssleay_add_bytes without obeying
3398 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3399 that they do not hold after the first thread unsets add_do_not_lock).
3402 *) Change bctest again: '-x' expressions are not available in all
3406 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3408 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3409 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3411 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3412 the default extension for executables, if any. Also, make the perl
3413 scripts that use symlink() to test if it really exists and use "cp"
3414 if it doesn't. All this made OpenSSL compilable and installable in
3418 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3419 If SEQUENCE is length is indefinite just set c->slen to the total
3420 amount of data available.
3421 [Steve Henson, reported by shige@FreeBSD.org]
3422 [This change does not apply to 0.9.7.]
3424 *) Change bctest to avoid here-documents inside command substitution
3425 (workaround for FreeBSD /bin/sh bug).
3426 For compatibility with Ultrix, avoid shell functions (introduced
3427 in the bctest version that searches along $PATH).
3430 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3431 with des_encrypt() defined on some operating systems, like Solaris
3435 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3436 On the Importance of Eliminating Errors in Cryptographic
3437 Computations, J. Cryptology 14 (2001) 2, 101-119,
3438 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3441 *) MIPS assembler BIGNUM division bug fix.
3444 *) Disabled incorrect Alpha assembler code.
3447 *) Fix PKCS#7 decode routines so they correctly update the length
3448 after reading an EOC for the EXPLICIT tag.
3450 [This change does not apply to 0.9.7.]
3452 *) Fix bug in PKCS#12 key generation routines. This was triggered
3453 if a 3DES key was generated with a 0 initial byte. Include
3454 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3455 (but broken) behaviour.
3458 *) Enhance bctest to search for a working bc along $PATH and print
3460 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3462 *) Fix memory leaks in err.c: free err_data string if necessary;
3463 don't write to the wrong index in ERR_set_error_data.
3466 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3470 *) Replace rdtsc with _emit statements for VC++ version 5.
3471 [Jeremy Cooper <jeremy@baymoo.org>]
3473 *) Make it possible to reuse SSLv2 sessions.
3476 *) In copy_email() check for >= 0 as a return value for
3477 X509_NAME_get_index_by_NID() since 0 is a valid index.
3478 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3480 *) Avoid coredump with unsupported or invalid public keys by checking if
3481 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3482 PKCS7_verify() fails with non detached data.
3485 *) Don't use getenv in library functions when run as setuid/setgid.
3486 New function OPENSSL_issetugid().
3489 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3490 due to incorrect handling of multi-threading:
3492 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3494 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3496 3. Count how many times MemCheck_off() has been called so that
3497 nested use can be treated correctly. This also avoids
3498 inband-signalling in the previous code (which relied on the
3499 assumption that thread ID 0 is impossible).
3502 *) Add "-rand" option also to s_client and s_server.
3505 *) Fix CPU detection on Irix 6.x.
3506 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3507 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3509 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3512 [This change does not apply to 0.9.7.]
3514 *) Use the cached encoding of an X509_NAME structure rather than
3515 copying it. This is apparently the reason for the libsafe "errors"
3516 but the code is actually correct.
3519 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3520 Bleichenbacher's DSA attack.
3521 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3522 to be set and top=0 forces the highest bit to be set; top=-1 is new
3523 and leaves the highest bit random.
3524 [Ulf Moeller, Bodo Moeller]
3526 *) In the NCONF_...-based implementations for CONF_... queries
3527 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3528 a temporary CONF structure with the data component set to NULL
3529 (which gives segmentation faults in lh_retrieve).
3530 Instead, use NULL for the CONF pointer in CONF_get_string and
3531 CONF_get_number (which may use environment variables) and directly
3532 return NULL from CONF_get_section.
3535 *) Fix potential buffer overrun for EBCDIC.
3538 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3539 keyUsage if basicConstraints absent for a CA.
3542 *) Make SMIME_write_PKCS7() write mail header values with a format that
3543 is more generally accepted (no spaces before the semicolon), since
3544 some programs can't parse those values properly otherwise. Also make
3545 sure BIO's that break lines after each write do not create invalid
3549 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3550 macros previously used would not encode an empty SEQUENCE OF
3551 and break the signature.
3553 [This change does not apply to 0.9.7.]
3555 *) Zero the premaster secret after deriving the master secret in
3559 *) Add some EVP_add_digest_alias registrations (as found in
3560 OpenSSL_add_all_digests()) to SSL_library_init()
3561 aka OpenSSL_add_ssl_algorithms(). This provides improved
3562 compatibility with peers using X.509 certificates
3563 with unconventional AlgorithmIdentifier OIDs.
3566 *) Fix for Irix with NO_ASM.
3567 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3569 *) ./config script fixes.
3570 [Ulf Moeller, Richard Levitte]
3572 *) Fix 'openssl passwd -1'.
3575 *) Change PKCS12_key_gen_asc() so it can cope with non null
3576 terminated strings whose length is passed in the passlen
3577 parameter, for example from PEM callbacks. This was done
3578 by adding an extra length parameter to asc2uni().
3579 [Steve Henson, reported by <oddissey@samsung.co.kr>]
3581 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
3582 call failed, free the DSA structure.
3585 *) Fix to uni2asc() to cope with zero length Unicode strings.
3586 These are present in some PKCS#12 files.
3589 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
3590 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
3591 when writing a 32767 byte record.
3592 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
3594 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
3595 obtain lock CRYPTO_LOCK_RSA befor
projects / openssl.git / blob