5 Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
7 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
8 to allow all RSA operations to function using a single BN_CTX.
11 *) Preliminary support for certificate policy evaluation and checking. This
12 is initially intended to pass the tests outlined in "Conformance Testing
13 of Relying Party Client Certificate Path Processing Logic" v1.07.
16 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
17 remained unused and not that useful. A variety of other little bignum
18 tweaks and fixes have also been made continuing on from the audit (see
22 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
23 associated ASN1, EVP and SSL functions and old ASN1 macros.
26 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
27 and this should never fail. So the return value from the use of
28 BN_set_word() (which can fail due to needless expansion) is now deprecated;
29 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
32 *) BN_CTX_get() should return zero-valued bignums, providing the same
33 initialised value as BN_new().
34 [Geoff Thorpe, suggested by Ulf Möller]
36 *) Support for inhibitAnyPolicy certificate extension.
39 *) An audit of the BIGNUM code is underway, for which debugging code is
40 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
41 is considered valid when processing BIGNUMs, and causes execution to
42 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
43 further steps are taken to deliberately pollute unused data in BIGNUM
44 structures to try and expose faulty code further on. For now, openssl will
45 (in its default mode of operation) continue to tolerate the inconsistent
46 forms that it has tolerated in the past, but authors and packagers should
47 consider trying openssl and their own applications when compiled with
48 these debugging symbols defined. It will help highlight potential bugs in
49 their own code, and will improve the test coverage for OpenSSL itself. At
50 some point, these tighter rules will become openssl's default to improve
51 maintainability, though the assert()s and other overheads will remain only
52 in debugging configurations. See bn.h for more details.
53 [Geoff Thorpe, Nils Larsch, Ulf Möller]
55 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
56 that can only be obtained through BN_CTX_new() (which implicitly
57 initialises it). The presence of this function only made it possible
58 to overwrite an existing structure (and cause memory leaks).
61 *) Because of the callback-based approach for implementing LHASH as a
62 template type, lh_insert() adds opaque objects to hash-tables and
63 lh_doall() or lh_doall_arg() are typically used with a destructor callback
64 to clean up those corresponding objects before destroying the hash table
65 (and losing the object pointers). So some over-zealous constifications in
66 LHASH have been relaxed so that lh_insert() does not take (nor store) the
67 objects as "const" and the lh_doall[_arg] callback wrappers are not
68 prototyped to have "const" restrictions on the object pointers they are
69 given (and so aren't required to cast them away any more).
72 *) The tmdiff.h API was so ugly and minimal that our own timing utility
73 (speed) prefers to use its own implementation. The two implementations
74 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
75 its object type properly exposed (MS_TM) instead of casting to/from "char
76 *". This may still change yet if someone realises MS_TM and "ms_time_***"
77 aren't necessarily the greatest nomenclatures - but this is what was used
78 internally to the implementation so I've used that for now.
81 *) Ensure that deprecated functions do not get compiled when
82 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
83 the self-tests were still using deprecated key-generation functions so
84 these have been updated also.
87 *) Reorganise PKCS#7 code to separate the digest location functionality
88 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
89 New function PKCS7_set_digest() to set the digest type for PKCS#7
90 digestedData type. Add additional code to correctly generate the
91 digestedData type and add support for this type in PKCS7 initialization
95 *) New function PKCS7_set0_type_other() this initializes a PKCS7
96 structure of type "other".
99 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
100 sure the loop does correctly stop and breaking ("division by zero")
101 modulus operations are not performed. The (pre-generated) prime
102 table crypto/bn/bn_prime.h was already correct, but it could not be
103 re-generated on some platforms because of the "division by zero"
104 situation in the script.
105 [Ralf S. Engelschall]
107 *) Update support for ECC-based TLS ciphersuites according to
108 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
109 SHA-1 now is only used for "small" curves (where the
110 representation of a field element takes up to 24 bytes); for
111 larger curves, the field element resulting from ECDH is directly
112 used as premaster secret.
113 [Douglas Stebila (Sun Microsystems Laboratories)]
115 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
116 curve secp160r1 to the tests.
117 [Douglas Stebila (Sun Microsystems Laboratories)]
119 *) Add the possibility to load symbols globally with DSO.
120 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
122 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
123 control of the error stack.
126 *) Add support for STORE in ENGINE.
129 *) Add the STORE type. The intention is to provide a common interface
130 to certificate and key stores, be they simple file-based stores, or
131 HSM-type store, or LDAP stores, or...
132 NOTE: The code is currently UNTESTED and isn't really used anywhere.
135 *) Add a generic structure called OPENSSL_ITEM. This can be used to
136 pass a list of arguments to any function as well as provide a way
137 for a function to pass data back to the caller.
140 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
141 works like BUF_strdup() but can be used to duplicate a portion of
142 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
146 *) Add the function sk_find_ex() which works like sk_find(), but will
147 return an index to an element even if an exact match couldn't be
148 found. The index is guaranteed to point at the element where the
149 searched-for key would be inserted to preserve sorting order.
152 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
153 takes an extra flags argument for optional functionality. Currently,
154 the following flags are defined:
156 OBJ_BSEARCH_VALUE_ON_NOMATCH
157 This one gets OBJ_bsearch_ex() to return a pointer to the first
158 element where the comparing function returns a negative or zero
161 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
162 This one gets OBJ_bsearch_ex() to return a pointer to the first
163 element where the comparing function returns zero. This is useful
164 if there are more than one element where the comparing function
168 *) Make it possible to create self-signed certificates with 'openssl ca'
169 in such a way that the self-signed certificate becomes part of the
170 CA database and uses the same mechanisms for serial number generation
171 as all other certificate signing. The new flag '-selfsign' enables
172 this functionality. Adapt CA.sh and CA.pl.in.
175 *) Add functionality to check the public key of a certificate request
176 against a given private. This is useful to check that a certificate
177 request can be signed by that key (self-signing).
180 *) Make it possible to have multiple active certificates with the same
181 subject in the CA index file. This is done only if the keyword
182 'unique_subject' is set to 'no' in the main CA section (default
183 if 'CA_default') of the configuration file. The value is saved
184 with the database itself in a separate index attribute file,
185 named like the index file with '.attr' appended to the name.
188 *) Generate muti valued AVAs using '+' notation in config files for
192 *) Support for nameConstraints certificate extension.
195 *) Support for policyConstraints certificate extension.
198 *) Support for policyMappings certificate extension.
201 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
202 ENGINE as defaults for all supported algorithms irrespective of
203 the 'flags' parameter. 'flags' is now honoured, so applications
204 should make sure they are passing it correctly.
207 *) Make sure the default DSA_METHOD implementation only uses its
208 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
209 and change its own handlers to be NULL so as to remove unnecessary
210 indirection. This lets alternative implementations fallback to the
211 default implementation more easily.
214 *) Support for directoryName in GeneralName related extensions
218 *) Make it possible to link applications using Makefile.shared.
219 Make that possible even when linking against static libraries!
222 *) Support for single pass processing for S/MIME signing. This now
223 means that S/MIME signing can be done from a pipe, in addition
224 cleartext signing (multipart/signed type) is effectively streaming
225 and the signed data does not need to be all held in memory.
227 This is done with a new flag PKCS7_STREAM. When this flag is set
228 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
229 is done after the data is output (and digests calculated) in
233 *) Add full support for -rpath/-R, both in shared libraries and
234 applications, at least on the platforms where it's known how
238 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
239 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
240 will now compute a table of multiples of the generator that
241 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
242 faster (notably in the case of a single point multiplication,
244 [Nils Larsch, Bodo Moeller]
246 *) IPv6 support for certificate extensions. The various extensions
247 which use the IP:a.b.c.d can now take IPv6 addresses using the
248 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
252 *) Added an ENGINE that implements RSA by performing private key
253 exponentiations with the GMP library. The conversions to and from
254 GMP's mpz_t format aren't optimised nor are any montgomery forms
255 cached, and on x86 it appears OpenSSL's own performance has caught up.
256 However there are likely to be other architectures where GMP could
257 provide a boost. This ENGINE is not built in by default, but it can be
258 specified at Configure time and should be accompanied by the necessary
259 linker additions, eg;
260 ./config -DOPENSSL_USE_GMP -lgmp
263 *) "openssl engine" will not display ENGINE/DSO load failure errors when
264 testing availability of engines with "-t" - the old behaviour is
265 produced by increasing the feature's verbosity with "-tt".
268 *) ECDSA routines: under certain error conditions uninitialized BN objects
269 could be freed. Solution: make sure initialization is performed early
270 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
274 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
275 and DH_METHOD (eg. by ENGINE implementations) to override the normal
276 software implementations. For DSA and DH, parameter generation can
277 also be overriden by providing the appropriate method callbacks.
280 *) Change the "progress" mechanism used in key-generation and
281 primality testing to functions that take a new BN_GENCB pointer in
282 place of callback/argument pairs. The new API functions have "_ex"
283 postfixes and the older functions are reimplemented as wrappers for
284 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
285 declarations of the old functions to help (graceful) attempts to
286 migrate to the new functions. Also, the new key-generation API
287 functions operate on a caller-supplied key-structure and return
288 success/failure rather than returning a key or NULL - this is to
289 help make "keygen" another member function of RSA_METHOD etc.
291 Example for using the new callback interface:
293 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
297 BN_GENCB_set(&my_cb, my_callback, my_arg);
299 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
300 /* For the meaning of a, b in calls to my_callback(), see the
301 * documentation of the function that calls the callback.
302 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
303 * my_callback should return 1 if it wants BN_is_prime_ex()
304 * to continue, or 0 to stop.
309 *) Change the ZLIB compression method to be stateful, and make it
310 available to TLS with the number defined in
311 draft-ietf-tls-compression-04.txt.
314 *) Add the ASN.1 structures and functions for CertificatePair, which
315 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
317 CertificatePair ::= SEQUENCE {
318 forward [0] Certificate OPTIONAL,
319 reverse [1] Certificate OPTIONAL,
320 -- at least one of the pair shall be present -- }
322 Also implement the PEM functions to read and write certificate
323 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
325 This needed to be defined, mostly for the sake of the LDAP
326 attribute crossCertificatePair, but may prove useful elsewhere as
330 *) Make it possible to inhibit symlinking of shared libraries in
331 Makefile.shared, for Cygwin's sake.
334 *) Extend the BIGNUM API by creating new macros that behave like
337 void BN_set_sign(BIGNUM *a, int neg);
338 int BN_get_sign(const BIGNUM *a);
340 and avoid the need to access 'a->neg' directly in applications.
341 [Nils Larsch <nla@trustcenter.de>]
343 *) Implement fast modular reduction for pseudo-Mersenne primes
344 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
345 EC_GROUP_new_curve_GFp() will now automatically use this
347 [Nils Larsch <nla@trustcenter.de>]
349 *) Add new lock type (CRYPTO_LOCK_BN).
352 *) Change the ENGINE framework to automatically load engines
353 dynamically from specific directories unless they could be
354 found to already be built in or loaded. Move all the
355 current engines except for the cryptodev one to a new
357 The engines in engines/ are built as shared libraries if
358 the "shared" options was given to ./Configure or ./config.
359 Otherwise, they are inserted in libcrypto.a.
360 /usr/local/ssl/engines is the default directory for dynamic
361 engines, but that can be overriden at configure time through
362 the usual use of --prefix and/or --openssldir, and at run
363 time with the environment variable OPENSSL_ENGINES.
364 [Geoff Thorpe and Richard Levitte]
366 *) Add Makefile.shared, a helper makefile to build shared
367 libraries. Addapt Makefile.org.
370 *) Add version info to Win32 DLLs.
371 [Peter 'Luna' Runestig" <peter@runestig.com>]
373 *) Add new 'medium level' PKCS#12 API. Certificates and keys
374 can be added using this API to created arbitrary PKCS#12
375 files while avoiding the low level API.
377 New options to PKCS12_create(), key or cert can be NULL and
378 will then be omitted from the output file. The encryption
379 algorithm NIDs can be set to -1 for no encryption, the mac
380 iteration count can be set to 0 to omit the mac.
382 Enhance pkcs12 utility by making the -nokeys and -nocerts
383 options work when creating a PKCS#12 file. New option -nomac
384 to omit the mac, NONE can be set for an encryption algorithm.
385 New code is modified to use the enhanced PKCS12_create()
386 instead of the low level API.
389 *) Extend ASN1 encoder to support indefinite length constructed
390 encoding. This can output sequences tags and octet strings in
391 this form. Modify pk7_asn1.c to support indefinite length
392 encoding. This is experimental and needs additional code to
393 be useful, such as an ASN1 bio and some enhanced streaming
396 Extend template encode functionality so that tagging is passed
397 down to the template encoder.
400 *) Let 'openssl req' fail if an argument to '-newkey' is not
401 recognized instead of using RSA as a default.
404 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
405 As these are not official, they are not included in "ALL";
406 the "ECCdraft" ciphersuite group alias can be used to select them.
407 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
409 *) Add ECDH engine support.
410 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
412 *) Add ECDH in new directory crypto/ecdh/.
413 [Douglas Stebila (Sun Microsystems Laboratories)]
415 *) Let BN_rand_range() abort with an error after 100 iterations
416 without success (which indicates a broken PRNG).
419 *) Change BN_mod_sqrt() so that it verifies that the input value
420 is really the square of the return value. (Previously,
421 BN_mod_sqrt would show GIGO behaviour.)
424 *) Add named elliptic curves over binary fields from X9.62, SECG,
425 and WAP/WTLS; add OIDs that were still missing.
427 [Sheueling Chang Shantz and Douglas Stebila
428 (Sun Microsystems Laboratories)]
430 *) Extend the EC library for elliptic curves over binary fields
431 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
434 EC_GF2m_simple_method
438 EC_GROUP_new_curve_GF2m
439 EC_GROUP_set_curve_GF2m
440 EC_GROUP_get_curve_GF2m
441 EC_POINT_set_affine_coordinates_GF2m
442 EC_POINT_get_affine_coordinates_GF2m
443 EC_POINT_set_compressed_coordinates_GF2m
445 Point compression for binary fields is disabled by default for
446 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
449 As binary polynomials are represented as BIGNUMs, various members
450 of the EC_GROUP and EC_POINT data structures can be shared
451 between the implementations for prime fields and binary fields;
452 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
453 are essentially identical to their ..._GFp counterparts.
454 (For simplicity, the '..._GFp' prefix has been dropped from
455 various internal method names.)
457 An internal 'field_div' method (similar to 'field_mul' and
458 'field_sqr') has been added; this is used only for binary fields.
460 [Sheueling Chang Shantz and Douglas Stebila
461 (Sun Microsystems Laboratories)]
463 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
464 through methods ('mul', 'precompute_mult').
466 The generic implementations (now internally called 'ec_wNAF_mul'
467 and 'ec_wNAF_precomputed_mult') remain the default if these
468 methods are undefined.
470 [Sheueling Chang Shantz and Douglas Stebila
471 (Sun Microsystems Laboratories)]
473 *) New function EC_GROUP_get_degree, which is defined through
474 EC_METHOD. For curves over prime fields, this returns the bit
475 length of the modulus.
477 [Sheueling Chang Shantz and Douglas Stebila
478 (Sun Microsystems Laboratories)]
480 *) New functions EC_GROUP_dup, EC_POINT_dup.
481 (These simply call ..._new and ..._copy).
483 [Sheueling Chang Shantz and Douglas Stebila
484 (Sun Microsystems Laboratories)]
486 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
487 Polynomials are represented as BIGNUMs (where the sign bit is not
488 used) in the following functions [macros]:
491 BN_GF2m_sub [= BN_GF2m_add]
492 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
493 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
494 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
496 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
497 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
498 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
499 BN_GF2m_cmp [= BN_ucmp]
501 (Note that only the 'mod' functions are actually for fields GF(2^m).
502 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
504 For some functions, an the irreducible polynomial defining a
505 field can be given as an 'unsigned int[]' with strictly
506 decreasing elements giving the indices of those bits that are set;
507 i.e., p[] represents the polynomial
508 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
510 p[0] > p[1] > ... > p[k] = 0.
511 This applies to the following functions:
516 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
517 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
520 BN_GF2m_mod_solve_quad_arr
524 Conversion can be performed by the following functions:
529 bntest.c has additional tests for binary polynomial arithmetic.
531 Two implementations for BN_GF2m_mod_div() are available.
532 The default algorithm simply uses BN_GF2m_mod_inv() and
533 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
534 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
535 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
537 [Sheueling Chang Shantz and Douglas Stebila
538 (Sun Microsystems Laboratories)]
540 *) Add new error code 'ERR_R_DISABLED' that can be used when some
541 functionality is disabled at compile-time.
542 [Douglas Stebila <douglas.stebila@sun.com>]
544 *) Change default behaviour of 'openssl asn1parse' so that more
545 information is visible when viewing, e.g., a certificate:
547 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
548 mode the content of non-printable OCTET STRINGs is output in a
549 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
550 avoid the appearance of a printable string.
551 [Nils Larsch <nla@trustcenter.de>]
553 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
555 EC_GROUP_set_asn1_flag()
556 EC_GROUP_get_asn1_flag()
557 EC_GROUP_set_point_conversion_form()
558 EC_GROUP_get_point_conversion_form()
559 These control ASN1 encoding details:
560 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
561 has been set to OPENSSL_EC_NAMED_CURVE.
562 - Points are encoded in uncompressed form by default; options for
563 asn1_for are as for point2oct, namely
564 POINT_CONVERSION_COMPRESSED
565 POINT_CONVERSION_UNCOMPRESSED
566 POINT_CONVERSION_HYBRID
568 Also add 'seed' and 'seed_len' members to EC_GROUP with access
572 EC_GROUP_get_seed_len()
573 This is used only for ASN1 purposes (so far).
574 [Nils Larsch <nla@trustcenter.de>]
576 *) Add 'field_type' member to EC_METHOD, which holds the NID
577 of the appropriate field type OID. The new function
578 EC_METHOD_get_field_type() returns this value.
579 [Nils Larsch <nla@trustcenter.de>]
586 providing useful interfaces to EC_POINT_point2oct() and
587 EC_POINT_oct2point().
588 [Nils Larsch <nla@trustcenter.de>]
590 *) Change internals of the EC library so that the functions
591 EC_GROUP_set_generator()
592 EC_GROUP_get_generator()
594 EC_GROUP_get_cofactor()
595 are implemented directly in crypto/ec/ec_lib.c and not dispatched
596 to methods, which would lead to unnecessary code duplication when
597 adding different types of curves.
598 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
600 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
601 arithmetic, and such that modified wNAFs are generated
602 (which avoid length expansion in many cases).
605 *) Add a function EC_GROUP_check_discriminant() (defined via
606 EC_METHOD) that verifies that the curve discriminant is non-zero.
608 Add a function EC_GROUP_check() that makes some sanity tests
609 on a EC_GROUP, its generator and order. This includes
610 EC_GROUP_check_discriminant().
611 [Nils Larsch <nla@trustcenter.de>]
613 *) Add ECDSA in new directory crypto/ecdsa/.
615 Add applications 'openssl ecparam' and 'openssl ecdsa'
616 (these are based on 'openssl dsaparam' and 'openssl dsa').
618 ECDSA support is also included in various other files across the
619 library. Most notably,
620 - 'openssl req' now has a '-newkey ecdsa:file' option;
621 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
622 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
623 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
624 them suitable for ECDSA where domain parameters must be
625 extracted before the specific public key;
626 - ECDSA engine support has been added.
627 [Nils Larsch <nla@trustcenter.de>]
629 *) Include some named elliptic curves, and add OIDs from X9.62,
630 SECG, and WAP/WTLS. Each curve can be obtained from the new
632 EC_GROUP_new_by_nid(),
633 and the list of available named curves can be obtained with
634 EC_get_builtin_curves().
635 Also add a 'curve_name' member to EC_GROUP objects, which can be
639 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
641 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
642 was actually never needed) and in BN_mul(). The removal in BN_mul()
643 required a small change in bn_mul_part_recursive() and the addition
644 of the functions bn_cmp_part_words(), bn_sub_part_words() and
645 bn_add_part_words(), which do the same thing as bn_cmp_words(),
646 bn_sub_words() and bn_add_words() except they take arrays with
650 Changes between 0.9.7c and 0.9.7d [xx XXX XXXX]
652 *) X509 verify fixes. Disable broken certificate workarounds when
653 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
654 keyUsage extension present. Don't accept CRLs with unhandled critical
655 extensions: since verify currently doesn't process CRL extensions this
656 rejects a CRL with *any* critical extensions. Add new verify error codes
660 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
661 A clarification of RFC2560 will require the use of OCTET STRINGs and
662 some implementations cannot handle the current raw format. Since OpenSSL
663 copies and compares OCSP nonces as opaque blobs without any attempt at
664 parsing them this should not create any compatibility issues.
667 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
668 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
669 this HMAC (and other) operations are several times slower than OpenSSL
673 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
674 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
676 *) Use the correct content when signing type "other".
679 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
681 *) Fix various bugs revealed by running the NISCC test suite:
683 Stop out of bounds reads in the ASN1 code when presented with
684 invalid tags (CAN-2003-0543 and CAN-2003-0544).
686 Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
688 If verify callback ignores invalid public key errors don't try to check
689 certificate signature with the NULL public key.
693 *) New -ignore_err option in ocsp application to stop the server
694 exiting on the first error in a request.
697 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
698 if the server requested one: as stated in TLS 1.0 and SSL 3.0
702 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
703 extra data after the compression methods not only for TLS 1.0
704 but also for SSL 3.0 (as required by the specification).
705 [Bodo Moeller; problem pointed out by Matthias Loepfe]
707 *) Change X509_certificate_type() to mark the key as exported/exportable
708 when it's 512 *bits* long, not 512 bytes.
711 *) Change AES_cbc_encrypt() so it outputs exact multiple of
712 blocks during encryption.
715 *) Various fixes to base64 BIO and non blocking I/O. On write
716 flushes were not handled properly if the BIO retried. On read
717 data was not being buffered properly and had various logic bugs.
718 This also affects blocking I/O when the data being decoded is a
722 *) Various S/MIME bugfixes and compatibility changes:
723 output correct application/pkcs7 MIME type if
724 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
725 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
726 of files as .eml work). Correctly handle very long lines in MIME
730 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
732 *) Countermeasure against the Klima-Pokorny-Rosa extension of
733 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
734 a protocol version number mismatch like a decryption error
735 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
738 *) Turn on RSA blinding by default in the default implementation
739 to avoid a timing attack. Applications that don't want it can call
740 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
741 They would be ill-advised to do so in most cases.
742 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
744 *) Change RSA blinding code so that it works when the PRNG is not
745 seeded (in this case, the secret RSA exponent is abused as
746 an unpredictable seed -- if it is not unpredictable, there
747 is no point in blinding anyway). Make RSA blinding thread-safe
748 by remembering the creator's thread ID in rsa->blinding and
749 having all other threads use local one-time blinding factors
750 (this requires more computation than sharing rsa->blinding, but
751 avoids excessive locking; and if an RSA object is not shared
752 between threads, blinding will still be very fast).
755 yet to be integrated into this CVS branch:
756 - Geoff's ENGINE_set_default() fix
758 *) Target "mingw" now allows native Windows code to be generated in
759 the Cygwin environment as well as with the MinGW compiler.
762 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
764 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
765 via timing by performing a MAC computation even if incorrrect
766 block cipher padding has been found. This is a countermeasure
767 against active attacks where the attacker has to distinguish
768 between bad padding and a MAC verification error. (CAN-2003-0078)
770 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
771 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
772 Martin Vuagnoux (EPFL, Ilion)]
774 *) Make the no-err option work as intended. The intention with no-err
775 is not to have the whole error stack handling routines removed from
776 libcrypto, it's only intended to remove all the function name and
777 reason texts, thereby removing some of the footprint that may not
778 be interesting if those errors aren't displayed anyway.
780 NOTE: it's still possible for any application or module to have it's
781 own set of error texts inserted. The routines are there, just not
782 used by default when no-err is given.
785 *) Add support for FreeBSD on IA64.
786 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
788 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
789 Kerberos function mit_des_cbc_cksum(). Before this change,
790 the value returned by DES_cbc_cksum() was like the one from
791 mit_des_cbc_cksum(), except the bytes were swapped.
792 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
794 *) Allow an application to disable the automatic SSL chain building.
795 Before this a rather primitive chain build was always performed in
796 ssl3_output_cert_chain(): an application had no way to send the
797 correct chain if the automatic operation produced an incorrect result.
799 Now the chain builder is disabled if either:
801 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
803 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
805 The reasoning behind this is that an application would not want the
806 auto chain building to take place if extra chain certificates are
807 present and it might also want a means of sending no additional
808 certificates (for example the chain has two certificates and the
812 *) Add the possibility to build without the ENGINE framework.
813 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
815 *) Under Win32 gmtime() can return NULL: check return value in
816 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
819 *) DSA routines: under certain error conditions uninitialized BN objects
820 could be freed. Solution: make sure initialization is performed early
821 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
822 Nils Larsch <nla@trustcenter.de> via PR#459)
825 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
826 checked on reconnect on the client side, therefore session resumption
827 could still fail with a "ssl session id is different" error. This
828 behaviour is masked when SSL_OP_ALL is used due to
829 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
830 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
834 *) IA-32 assembler support enhancements: unified ELF targets, support
835 for SCO/Caldera platforms, fix for Cygwin shared build.
838 *) Add support for FreeBSD on sparc64. As a consequence, support for
839 FreeBSD on non-x86 processors is separate from x86 processors on
840 the config script, much like the NetBSD support.
841 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
843 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
845 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
848 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
849 code (06) was taken as the first octet of the session ID and the last
850 octet was ignored consequently. As a result SSLv2 client side session
851 caching could not have worked due to the session ID mismatch between
853 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
857 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
858 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
862 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
863 seems that in spite of existing for more than a year, many application
864 author have done nothing to provide the necessary callbacks, which
865 means that this particular engine will not work properly anywhere.
866 This is a very unfortunate situation which forces us, in the name
867 of usability, to give the hw_ncipher.c a static lock, which is part
869 NOTE: This is for the 0.9.7 series ONLY. This hack will never
870 appear in 0.9.8 or later. We EXPECT application authors to have
871 dealt properly with this when 0.9.8 is released (unless we actually
872 make such changes in the libcrypto locking code that changes will
873 have to be made anyway).
876 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
877 octets have been read, EOF or an error occurs. Without this change
878 some truncated ASN1 structures will not produce an error.
881 *) Disable Heimdal support, since it hasn't been fully implemented.
882 Still give the possibility to force the use of Heimdal, but with
883 warnings and a request that patches get sent to openssl-dev.
886 *) Add the VC-CE target, introduce the WINCE sysname, and add
887 INSTALL.WCE and appropriate conditionals to make it build.
888 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
890 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
891 cygssl-x.y.z.dll, where x, y and z are the major, minor and
892 edit numbers of the version.
893 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
895 *) Introduce safe string copy and catenation functions
896 (BUF_strlcpy() and BUF_strlcat()).
897 [Ben Laurie (CHATS) and Richard Levitte]
899 *) Avoid using fixed-size buffers for one-line DNs.
902 *) Add BUF_MEM_grow_clean() to avoid information leakage when
903 resizing buffers containing secrets, and use where appropriate.
906 *) Avoid using fixed size buffers for configuration file location.
909 *) Avoid filename truncation for various CA files.
912 *) Use sizeof in preference to magic numbers.
915 *) Avoid filename truncation in cert requests.
918 *) Add assertions to check for (supposedly impossible) buffer
922 *) Don't cache truncated DNS entries in the local cache (this could
923 potentially lead to a spoofing attack).
926 *) Fix various buffers to be large enough for hex/decimal
927 representations in a platform independent manner.
930 *) Add CRYPTO_realloc_clean() to avoid information leakage when
931 resizing buffers containing secrets, and use where appropriate.
934 *) Add BIO_indent() to avoid much slightly worrying code to do
938 *) Convert sprintf()/BIO_puts() to BIO_printf().
941 *) buffer_gets() could terminate with the buffer only half
945 *) Add assertions to prevent user-supplied crypto functions from
946 overflowing internal buffers by having large block sizes, etc.
949 *) New OPENSSL_assert() macro (similar to assert(), but enabled
953 *) Eliminate unused copy of key in RC4.
956 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
959 *) Fix off-by-one error in EGD path.
962 *) If RANDFILE path is too long, ignore instead of truncating.
965 *) Eliminate unused and incorrectly sized X.509 structure
969 *) Eliminate unused and dangerous function knumber().
972 *) Eliminate unused and dangerous structure, KSSL_ERR.
975 *) Protect against overlong session ID context length in an encoded
976 session object. Since these are local, this does not appear to be
980 *) Change from security patch (see 0.9.6e below) that did not affect
981 the 0.9.6 release series:
983 Remote buffer overflow in SSL3 protocol - an attacker could
984 supply an oversized master key in Kerberos-enabled versions.
988 *) Change the SSL kerb5 codes to match RFC 2712.
991 *) Make -nameopt work fully for req and add -reqopt switch.
992 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
994 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
995 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
997 *) Make sure tests can be performed even if the corresponding algorithms
998 have been removed entirely. This was also the last step to make
999 OpenSSL compilable with DJGPP under all reasonable conditions.
1000 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1002 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1003 to allow version independent disabling of normally unselected ciphers,
1004 which may be activated as a side-effect of selecting a single cipher.
1006 (E.g., cipher list string "RSA" enables ciphersuites that are left
1007 out of "ALL" because they do not provide symmetric encryption.
1008 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1009 [Lutz Jaenicke, Bodo Moeller]
1011 *) Add appropriate support for separate platform-dependent build
1012 directories. The recommended way to make a platform-dependent
1013 build directory is the following (tested on Linux), maybe with
1016 # Place yourself outside of the OpenSSL source tree. In
1017 # this example, the environment variable OPENSSL_SOURCE
1018 # is assumed to contain the absolute OpenSSL source directory.
1019 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1020 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1021 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1022 mkdir -p `dirname $F`
1023 ln -s $OPENSSL_SOURCE/$F $F
1026 To be absolutely sure not to disturb the source tree, a "make clean"
1027 is a good thing. If it isn't successfull, don't worry about it,
1028 it probably means the source directory is very clean.
1031 *) Make sure any ENGINE control commands make local copies of string
1032 pointers passed to them whenever necessary. Otherwise it is possible
1033 the caller may have overwritten (or deallocated) the original string
1034 data when a later ENGINE operation tries to use the stored values.
1035 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1037 *) Improve diagnostics in file reading and command-line digests.
1038 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1040 *) Add AES modes CFB and OFB to the object database. Correct an
1041 error in AES-CFB decryption.
1044 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1045 allows existing EVP_CIPHER_CTX structures to be reused after
1046 calling EVP_*Final(). This behaviour is used by encryption
1047 BIOs and some applications. This has the side effect that
1048 applications must explicitly clean up cipher contexts with
1049 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1052 *) Check the values of dna and dnb in bn_mul_recursive before calling
1053 bn_mul_comba (a non zero value means the a or b arrays do not contain
1054 n2 elements) and fallback to bn_mul_normal if either is not zero.
1057 *) Fix escaping of non-ASCII characters when using the -subj option
1058 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1061 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1062 form for "surname", serialNumber has no short form.
1063 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1064 therefore remove "mail" short name for "internet 7".
1065 The OID for unique identifiers in X509 certificates is
1066 x500UniqueIdentifier, not uniqueIdentifier.
1067 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1070 *) Add an "init" command to the ENGINE config module and auto initialize
1071 ENGINEs. Without any "init" command the ENGINE will be initialized
1072 after all ctrl commands have been executed on it. If init=1 the
1073 ENGINE is initailized at that point (ctrls before that point are run
1074 on the uninitialized ENGINE and after on the initialized one). If
1075 init=0 then the ENGINE will not be iniatialized at all.
1078 *) Fix the 'app_verify_callback' interface so that the user-defined
1079 argument is actually passed to the callback: In the
1080 SSL_CTX_set_cert_verify_callback() prototype, the callback
1081 declaration has been changed from
1084 int (*cb)(X509_STORE_CTX *,void *);
1085 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1086 i=s->ctx->app_verify_callback(&ctx)
1087 has been changed into
1088 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1090 To update applications using SSL_CTX_set_cert_verify_callback(),
1091 a dummy argument can be added to their callback functions.
1092 [D. K. Smetters <smetters@parc.xerox.com>]
1094 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1095 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1097 *) Add and OPENSSL_LOAD_CONF define which will cause
1098 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1099 This allows older applications to transparently support certain
1100 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1101 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1102 load the config file and OPENSSL_add_all_algorithms_conf() which will
1103 always load it have also been added.
1106 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1107 Adjust NIDs and EVP layer.
1108 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1110 *) Config modules support in openssl utility.
1112 Most commands now load modules from the config file,
1113 though in a few (such as version) this isn't done
1114 because it couldn't be used for anything.
1116 In the case of ca and req the config file used is
1117 the same as the utility itself: that is the -config
1118 command line option can be used to specify an
1122 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1123 use "openssl_conf" if filename is NULL use default openssl config file.
1126 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1127 config section name. Add a new flag to tolerate a missing config file
1128 and move code to CONF_modules_load_file().
1131 *) Support for crypto accelerator cards from Accelerated Encryption
1132 Processing, www.aep.ie. (Use engine 'aep')
1133 The support was copied from 0.9.6c [engine] and adapted/corrected
1134 to work with the new engine framework.
1135 [AEP Inc. and Richard Levitte]
1137 *) Support for SureWare crypto accelerator cards from Baltimore
1138 Technologies. (Use engine 'sureware')
1139 The support was copied from 0.9.6c [engine] and adapted
1140 to work with the new engine framework.
1143 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1144 make the newer ENGINE framework commands for the CHIL engine work.
1145 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1147 *) Make it possible to produce shared libraries on ReliantUNIX.
1148 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1150 *) Add the configuration target debug-linux-ppro.
1151 Make 'openssl rsa' use the general key loading routines
1152 implemented in apps.c, and make those routines able to
1153 handle the key format FORMAT_NETSCAPE and the variant
1155 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1157 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1158 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1160 *) Add -keyform to rsautl, and document -engine.
1161 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1163 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1164 BIO_R_NO_SUCH_FILE error code rather than the generic
1165 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1168 *) Add new functions
1170 ERR_peek_last_error_line
1171 ERR_peek_last_error_line_data.
1172 These are similar to
1175 ERR_peek_error_line_data,
1176 but report on the latest error recorded rather than the first one
1177 still in the error queue.
1178 [Ben Laurie, Bodo Moeller]
1180 *) default_algorithms option in ENGINE config module. This allows things
1182 default_algorithms = ALL
1183 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1186 *) Prelminary ENGINE config module.
1189 *) New experimental application configuration code.
1192 *) Change the AES code to follow the same name structure as all other
1193 symmetric ciphers, and behave the same way. Move everything to
1194 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1195 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1197 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1198 [Ben Laurie and Theo de Raadt]
1200 *) Add option to output public keys in req command.
1201 [Massimiliano Pala madwolf@openca.org]
1203 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1204 (up to about 10% better than before for P-192 and P-224).
1207 *) New functions/macros
1209 SSL_CTX_set_msg_callback(ctx, cb)
1210 SSL_CTX_set_msg_callback_arg(ctx, arg)
1211 SSL_set_msg_callback(ssl, cb)
1212 SSL_set_msg_callback_arg(ssl, arg)
1214 to request calling a callback function
1216 void cb(int write_p, int version, int content_type,
1217 const void *buf, size_t len, SSL *ssl, void *arg)
1219 whenever a protocol message has been completely received
1220 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1221 protocol version according to which the SSL library interprets
1222 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1223 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1224 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1225 specification (change_cipher_spec(20), alert(21), handshake(22)).
1226 'buf' and 'len' point to the actual message, 'ssl' to the
1227 SSL object, and 'arg' is the application-defined value set by
1228 SSL[_CTX]_set_msg_callback_arg().
1230 'openssl s_client' and 'openssl s_server' have new '-msg' options
1231 to enable a callback that displays all protocol messages.
1234 *) Change the shared library support so shared libraries are built as
1235 soon as the corresponding static library is finished, and thereby get
1236 openssl and the test programs linked against the shared library.
1237 This still only happens when the keyword "shard" has been given to
1238 the configuration scripts.
1240 NOTE: shared library support is still an experimental thing, and
1241 backward binary compatibility is still not guaranteed.
1242 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1244 *) Add support for Subject Information Access extension.
1245 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1247 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1248 additional bytes when new memory had to be allocated, not just
1249 when reusing an existing buffer.
1252 *) New command line and configuration option 'utf8' for the req command.
1253 This allows field values to be specified as UTF8 strings.
1256 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1257 runs for the former and machine-readable output for the latter.
1260 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1261 of the e-mail address in the DN (i.e., it will go into a certificate
1262 extension only). The new configuration file option 'email_in_dn = no'
1263 has the same effect.
1264 [Massimiliano Pala madwolf@openca.org]
1266 *) Change all functions with names starting with des_ to be starting
1267 with DES_ instead. Add wrappers that are compatible with libdes,
1268 but are named _ossl_old_des_*. Finally, add macros that map the
1269 des_* symbols to the corresponding _ossl_old_des_* if libdes
1270 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1271 desired, the des_* symbols will be mapped to DES_*, with one
1274 Since we provide two compatibility mappings, the user needs to
1275 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1276 compatibility is desired. The default (i.e., when that macro
1277 isn't defined) is OpenSSL 0.9.6c compatibility.
1279 There are also macros that enable and disable the support of old
1280 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1281 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1282 are defined, the default will apply: to support the old des routines.
1284 In either case, one must include openssl/des.h to get the correct
1285 definitions. Do not try to just include openssl/des_old.h, that
1288 NOTE: This is a major break of an old API into a new one. Software
1289 authors are encouraged to switch to the DES_ style functions. Some
1290 time in the future, des_old.h and the libdes compatibility functions
1291 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1292 default), and then completely removed.
1295 *) Test for certificates which contain unsupported critical extensions.
1296 If such a certificate is found during a verify operation it is
1297 rejected by default: this behaviour can be overridden by either
1298 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1299 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1300 X509_supported_extension() has also been added which returns 1 if a
1301 particular extension is supported.
1304 *) Modify the behaviour of EVP cipher functions in similar way to digests
1305 to retain compatibility with existing code.
1308 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1309 compatibility with existing code. In particular the 'ctx' parameter does
1310 not have to be to be initialized before the call to EVP_DigestInit() and
1311 it is tidied up after a call to EVP_DigestFinal(). New function
1312 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1313 EVP_MD_CTX_copy() changed to not require the destination to be
1314 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1315 requires the destination to be valid.
1317 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1318 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1321 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1322 so that complete 'Handshake' protocol structures are kept in memory
1323 instead of overwriting 'msg_type' and 'length' with 'body' data.
1326 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1327 [Massimo Santin via Richard Levitte]
1329 *) Major restructuring to the underlying ENGINE code. This includes
1330 reduction of linker bloat, separation of pure "ENGINE" manipulation
1331 (initialisation, etc) from functionality dealing with implementations
1332 of specific crypto iterfaces. This change also introduces integrated
1333 support for symmetric ciphers and digest implementations - so ENGINEs
1334 can now accelerate these by providing EVP_CIPHER and EVP_MD
1335 implementations of their own. This is detailed in crypto/engine/README
1336 as it couldn't be adequately described here. However, there are a few
1337 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1338 were changed in the original introduction of ENGINE code have now
1339 reverted back - the hooking from this code to ENGINE is now a good
1340 deal more passive and at run-time, operations deal directly with
1341 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1342 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1343 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1344 they were not being used by the framework as there is no concept of a
1345 BIGNUM_METHOD and they could not be generalised to the new
1346 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1347 ENGINE_cpy() has been removed as it cannot be consistently defined in
1351 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1354 *) Change mkdef.pl to sort symbols that get the same entry number,
1355 and make sure the automatically generated functions ERR_load_*
1356 become part of libeay.num as well.
1359 *) New function SSL_renegotiate_pending(). This returns true once
1360 renegotiation has been requested (either SSL_renegotiate() call
1361 or HelloRequest/ClientHello receveived from the peer) and becomes
1362 false once a handshake has been completed.
1363 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1364 sends a HelloRequest, but does not ensure that a handshake takes
1365 place. SSL_renegotiate_pending() is useful for checking if the
1366 client has followed the request.)
1369 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1370 By default, clients may request session resumption even during
1371 renegotiation (if session ID contexts permit); with this option,
1372 session resumption is possible only in the first handshake.
1374 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1375 more bits available for options that should not be part of
1376 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1379 *) Add some demos for certificate and certificate request creation.
1382 *) Make maximum certificate chain size accepted from the peer application
1383 settable (SSL*_get/set_max_cert_list()), as proposed by
1384 "Douglas E. Engert" <deengert@anl.gov>.
1387 *) Add support for shared libraries for Unixware-7
1388 (Boyd Lynn Gerber <gerberb@zenez.com>).
1391 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1392 be done prior to destruction. Use this to unload error strings from
1393 ENGINEs that load their own error strings. NB: This adds two new API
1394 functions to "get" and "set" this destroy handler in an ENGINE.
1397 *) Alter all existing ENGINE implementations (except "openssl" and
1398 "openbsd") to dynamically instantiate their own error strings. This
1399 makes them more flexible to be built both as statically-linked ENGINEs
1400 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1401 Also, add stub code to each that makes building them as self-contained
1402 shared-libraries easier (see README.ENGINE).
1405 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1406 implementations into applications that are completely implemented in
1407 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1408 commands that can be used to configure what shared-library to load and
1409 to control aspects of the way it is handled. Also, made an update to
1410 the README.ENGINE file that brings its information up-to-date and
1411 provides some information and instructions on the "dynamic" ENGINE
1412 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1415 *) Make it possible to unload ranges of ERR strings with a new
1416 "ERR_unload_strings" function.
1419 *) Add a copy() function to EVP_MD.
1422 *) Make EVP_MD routines take a context pointer instead of just the
1423 md_data void pointer.
1426 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1427 that the digest can only process a single chunk of data
1428 (typically because it is provided by a piece of
1429 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1430 is only going to provide a single chunk of data, and hence the
1431 framework needn't accumulate the data for oneshot drivers.
1434 *) As with "ERR", make it possible to replace the underlying "ex_data"
1435 functions. This change also alters the storage and management of global
1436 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1437 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1438 index counters. The API functions that use this state have been changed
1439 to take a "class_index" rather than pointers to the class's local STACK
1440 and counter, and there is now an API function to dynamically create new
1441 classes. This centralisation allows us to (a) plug a lot of the
1442 thread-safety problems that existed, and (b) makes it possible to clean
1443 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1444 such data would previously have always leaked in application code and
1445 workarounds were in place to make the memory debugging turn a blind eye
1446 to it. Application code that doesn't use this new function will still
1447 leak as before, but their memory debugging output will announce it now
1448 rather than letting it slide.
1450 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1451 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1452 has a return value to indicate success or failure.
1455 *) Make it possible to replace the underlying "ERR" functions such that the
1456 global state (2 LHASH tables and 2 locks) is only used by the "default"
1457 implementation. This change also adds two functions to "get" and "set"
1458 the implementation prior to it being automatically set the first time
1459 any other ERR function takes place. Ie. an application can call "get",
1460 pass the return value to a module it has just loaded, and that module
1461 can call its own "set" function using that value. This means the
1462 module's "ERR" operations will use (and modify) the error state in the
1463 application and not in its own statically linked copy of OpenSSL code.
1466 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1467 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1468 the operation, and provides a more encapsulated way for external code
1469 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1470 to use these functions rather than manually incrementing the counts.
1472 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1475 *) Add EVP test program.
1478 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1481 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1482 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1483 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1484 These allow a CRL to be built without having to access X509_CRL fields
1485 directly. Modify 'ca' application to use new functions.
1488 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1489 bug workarounds. Rollback attack detection is a security feature.
1490 The problem will only arise on OpenSSL servers when TLSv1 is not
1491 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1492 Software authors not wanting to support TLSv1 will have special reasons
1493 for their choice and can explicitly enable this option.
1494 [Bodo Moeller, Lutz Jaenicke]
1496 *) Rationalise EVP so it can be extended: don't include a union of
1497 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1498 (similar to those existing for EVP_CIPHER_CTX).
1503 EVP_MD_CTX_init(&md); /* new function call */
1504 EVP_DigestInit(&md, EVP_sha1());
1505 EVP_DigestUpdate(&md, in, len);
1506 EVP_DigestFinal(&md, out, NULL);
1507 EVP_MD_CTX_cleanup(&md); /* new function call */
1511 *) Make DES key schedule conform to the usual scheme, as well as
1512 correcting its structure. This means that calls to DES functions
1513 now have to pass a pointer to a des_key_schedule instead of a
1514 plain des_key_schedule (which was actually always a pointer
1517 des_key_schedule ks;
1519 des_set_key_checked(..., &ks);
1520 des_ncbc_encrypt(..., &ks, ...);
1522 (Note that a later change renames 'des_...' into 'DES_...'.)
1525 *) Initial reduction of linker bloat: the use of some functions, such as
1526 PEM causes large amounts of unused functions to be linked in due to
1527 poor organisation. For example pem_all.c contains every PEM function
1528 which has a knock on effect of linking in large amounts of (unused)
1529 ASN1 code. Grouping together similar functions and splitting unrelated
1530 functions prevents this.
1533 *) Cleanup of EVP macros.
1536 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1537 correct _ecb suffix.
1540 *) Add initial OCSP responder support to ocsp application. The
1541 revocation information is handled using the text based index
1542 use by the ca application. The responder can either handle
1543 requests generated internally, supplied in files (for example
1544 via a CGI script) or using an internal minimal server.
1547 *) Add configuration choices to get zlib compression for TLS.
1550 *) Changes to Kerberos SSL for RFC 2712 compliance:
1551 1. Implemented real KerberosWrapper, instead of just using
1552 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1553 2. Implemented optional authenticator field of KerberosWrapper.
1555 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1556 and authenticator structs; see crypto/krb5/.
1558 Generalized Kerberos calls to support multiple Kerberos libraries.
1559 [Vern Staats <staatsvr@asc.hpc.mil>,
1560 Jeffrey Altman <jaltman@columbia.edu>
1561 via Richard Levitte]
1563 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1564 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1565 values for each of the key sizes rather than having just
1566 parameters (and 'speed' generating keys each time).
1569 *) Speed up EVP routines.
1572 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1573 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1574 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1575 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1577 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1578 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1579 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1582 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1584 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1587 *) Added the OS2-EMX target.
1588 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1590 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1591 to support NCONF routines in extension code. New function CONF_set_nconf()
1592 to allow functions which take an NCONF to also handle the old LHASH
1593 structure: this means that the old CONF compatible routines can be
1594 retained (in particular wrt extensions) without having to duplicate the
1595 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1598 *) Enhance the general user interface with mechanisms for inner control
1599 and with possibilities to have yes/no kind of prompts.
1602 *) Change all calls to low level digest routines in the library and
1603 applications to use EVP. Add missing calls to HMAC_cleanup() and
1604 don't assume HMAC_CTX can be copied using memcpy().
1605 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1607 *) Add the possibility to control engines through control names but with
1608 arbitrary arguments instead of just a string.
1609 Change the key loaders to take a UI_METHOD instead of a callback
1610 function pointer. NOTE: this breaks binary compatibility with earlier
1611 versions of OpenSSL [engine].
1612 Adapt the nCipher code for these new conditions and add a card insertion
1616 *) Enhance the general user interface with mechanisms to better support
1617 dialog box interfaces, application-defined prompts, the possibility
1618 to use defaults (for example default passwords from somewhere else)
1619 and interrupts/cancellations.
1622 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1623 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1626 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1627 tidy up some unnecessarily weird code in 'sk_new()').
1628 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1630 *) Change the key loading routines for ENGINEs to use the same kind
1631 callback (pem_password_cb) as all other routines that need this
1635 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1636 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1637 than this minimum value is recommended.
1640 *) New random seeder for OpenVMS, using the system process statistics
1641 that are easily reachable.
1644 *) Windows apparently can't transparently handle global
1645 variables defined in DLLs. Initialisations such as:
1647 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1649 wont compile. This is used by the any applications that need to
1650 declare their own ASN1 modules. This was fixed by adding the option
1651 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1652 needed for static libraries under Win32.
1655 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1656 setting of purpose and trust fields. New X509_STORE trust and
1657 purpose functions and tidy up setting in other SSL functions.
1660 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1661 structure. These are inherited by X509_STORE_CTX when it is
1662 initialised. This allows various defaults to be set in the
1663 X509_STORE structure (such as flags for CRL checking and custom
1664 purpose or trust settings) for functions which only use X509_STORE_CTX
1665 internally such as S/MIME.
1667 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1668 trust settings if they are not set in X509_STORE. This allows X509_STORE
1669 purposes and trust (in S/MIME for example) to override any set by default.
1671 Add command line options for CRL checking to smime, s_client and s_server
1675 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1676 are set then the CRL is looked up in the X509_STORE structure and
1677 its validity and signature checked, then if the certificate is found
1678 in the CRL the verify fails with a revoked error.
1680 Various new CRL related callbacks added to X509_STORE_CTX structure.
1682 Command line options added to 'verify' application to support this.
1684 This needs some additional work, such as being able to handle multiple
1685 CRLs with different times, extension based lookup (rather than just
1686 by subject name) and ultimately more complete V2 CRL extension
1690 *) Add a general user interface API (crypto/ui/). This is designed
1691 to replace things like des_read_password and friends (backward
1692 compatibility functions using this new API are provided).
1693 The purpose is to remove prompting functions from the DES code
1694 section as well as provide for prompting through dialog boxes in
1695 a window system and the like.
1698 *) Add "ex_data" support to ENGINE so implementations can add state at a
1699 per-structure level rather than having to store it globally.
1702 *) Make it possible for ENGINE structures to be copied when retrieved by
1703 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1704 This causes the "original" ENGINE structure to act like a template,
1705 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1706 operational state can be localised to each ENGINE structure, despite the
1707 fact they all share the same "methods". New ENGINE structures returned in
1708 this case have no functional references and the return value is the single
1709 structural reference. This matches the single structural reference returned
1710 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1714 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1715 needs to match any other type at all we need to manually clear the
1719 *) Changes to the "openssl engine" utility to include;
1720 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1721 about an ENGINE's available control commands.
1722 - executing control commands from command line arguments using the
1723 '-pre' and '-post' switches. '-post' is only used if '-t' is
1724 specified and the ENGINE is successfully initialised. The syntax for
1725 the individual commands are colon-separated, for example;
1726 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1729 *) New dynamic control command support for ENGINEs. ENGINEs can now
1730 declare their own commands (numbers), names (strings), descriptions,
1731 and input types for run-time discovery by calling applications. A
1732 subset of these commands are implicitly classed as "executable"
1733 depending on their input type, and only these can be invoked through
1734 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1735 can be based on user input, config files, etc). The distinction is
1736 that "executable" commands cannot return anything other than a boolean
1737 result and can only support numeric or string input, whereas some
1738 discoverable commands may only be for direct use through
1739 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1740 pointers, or other custom uses. The "executable" commands are to
1741 support parameterisations of ENGINE behaviour that can be
1742 unambiguously defined by ENGINEs and used consistently across any
1743 OpenSSL-based application. Commands have been added to all the
1744 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1745 control over shared-library paths without source code alterations.
1748 *) Changed all ENGINE implementations to dynamically allocate their
1749 ENGINEs rather than declaring them statically. Apart from this being
1750 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1751 this also allows the implementations to compile without using the
1752 internal engine_int.h header.
1755 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
1756 'const' value. Any code that should be able to modify a RAND_METHOD
1757 should already have non-const pointers to it (ie. they should only
1758 modify their own ones).
1761 *) Made a variety of little tweaks to the ENGINE code.
1762 - "atalla" and "ubsec" string definitions were moved from header files
1763 to C code. "nuron" string definitions were placed in variables
1764 rather than hard-coded - allowing parameterisation of these values
1765 later on via ctrl() commands.
1766 - Removed unused "#if 0"'d code.
1767 - Fixed engine list iteration code so it uses ENGINE_free() to release
1768 structural references.
1769 - Constified the RAND_METHOD element of ENGINE structures.
1770 - Constified various get/set functions as appropriate and added
1771 missing functions (including a catch-all ENGINE_cpy that duplicates
1772 all ENGINE values onto a new ENGINE except reference counts/state).
1773 - Removed NULL parameter checks in get/set functions. Setting a method
1774 or function to NULL is a way of cancelling out a previously set
1775 value. Passing a NULL ENGINE parameter is just plain stupid anyway
1776 and doesn't justify the extra error symbols and code.
1777 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
1778 flags from engine_int.h to engine.h.
1779 - Changed prototypes for ENGINE handler functions (init(), finish(),
1780 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
1783 *) Implement binary inversion algorithm for BN_mod_inverse in addition
1784 to the algorithm using long division. The binary algorithm can be
1785 used only if the modulus is odd. On 32-bit systems, it is faster
1786 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
1787 roughly 5-15% for 256-bit moduli), so we use it only for moduli
1788 up to 450 bits. In 64-bit environments, the binary algorithm
1789 appears to be advantageous for much longer moduli; here we use it
1790 for moduli up to 2048 bits.
1793 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
1794 could not support the combine flag in choice fields.
1797 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
1798 extensions from a certificate request to the certificate.
1801 *) Allow multiple 'certopt' and 'nameopt' options to be separated
1802 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
1803 file: this allows the display of the certificate about to be
1804 signed to be customised, to allow certain fields to be included
1805 or excluded and extension details. The old system didn't display
1806 multicharacter strings properly, omitted fields not in the policy
1807 and couldn't display additional details such as extensions.
1810 *) Function EC_POINTs_mul for multiple scalar multiplication
1811 of an arbitrary number of elliptic curve points
1812 \sum scalars[i]*points[i],
1813 optionally including the generator defined for the EC_GROUP:
1814 scalar*generator + \sum scalars[i]*points[i].
1816 EC_POINT_mul is a simple wrapper function for the typical case
1817 that the point list has just one item (besides the optional
1821 *) First EC_METHODs for curves over GF(p):
1823 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
1824 operations and provides various method functions that can also
1825 operate with faster implementations of modular arithmetic.
1827 EC_GFp_mont_method() reuses most functions that are part of
1828 EC_GFp_simple_method, but uses Montgomery arithmetic.
1830 [Bodo Moeller; point addition and point doubling
1831 implementation directly derived from source code provided by
1832 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
1834 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
1835 crypto/ec/ec_lib.c):
1837 Curves are EC_GROUP objects (with an optional group generator)
1838 based on EC_METHODs that are built into the library.
1840 Points are EC_POINT objects based on EC_GROUP objects.
1842 Most of the framework would be able to handle curves over arbitrary
1843 finite fields, but as there are no obvious types for fields other
1844 than GF(p), some functions are limited to that for now.
1847 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
1848 that the file contains a complete HTTP response.
1851 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
1852 change the def and num file printf format specifier from "%-40sXXX"
1853 to "%-39s XXX". The latter will always guarantee a space after the
1854 field while the former will cause them to run together if the field
1855 is 40 of more characters long.
1858 *) Constify the cipher and digest 'method' functions and structures
1859 and modify related functions to take constant EVP_MD and EVP_CIPHER
1863 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
1864 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
1867 *) Modify EVP_Digest*() routines so they now return values. Although the
1868 internal software routines can never fail additional hardware versions
1872 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
1874 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
1875 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
1878 ERR_R_NESTED_ASN1_ERROR
1880 ERR_R_MISSING_ASN1_EOS
1881 were 4 .. 9, conflicting with
1882 ERR_LIB_RSA (= ERR_R_RSA_LIB)
1884 ERR_LIB_PEM (= ERR_R_PEM_LIB).
1885 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
1887 Add new error code 'ERR_R_INTERNAL_ERROR'.
1890 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
1894 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
1895 sets the subject name for a new request or supersedes the
1896 subject name in a given request. Formats that can be parsed are
1897 'CN=Some Name, OU=myOU, C=IT'
1899 'CN=Some Name/OU=myOU/C=IT'.
1901 Add options '-batch' and '-verbose' to 'openssl req'.
1902 [Massimiliano Pala <madwolf@hackmasters.net>]
1904 *) Introduce the possibility to access global variables through
1905 functions on platform were that's the best way to handle exporting
1906 global variables in shared libraries. To enable this functionality,
1907 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
1908 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
1909 is normally done by Configure or something similar).
1911 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
1912 in the source file (foo.c) like this:
1914 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
1915 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
1917 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
1918 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
1920 OPENSSL_DECLARE_GLOBAL(int,foo);
1921 #define foo OPENSSL_GLOBAL_REF(foo)
1922 OPENSSL_DECLARE_GLOBAL(double,bar);
1923 #define bar OPENSSL_GLOBAL_REF(bar)
1925 The #defines are very important, and therefore so is including the
1926 header file everywhere where the defined globals are used.
1928 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
1929 of ASN.1 items, but that structure is a bit different.
1931 The largest change is in util/mkdef.pl which has been enhanced with
1932 better and easier to understand logic to choose which symbols should
1933 go into the Windows .def files as well as a number of fixes and code
1934 cleanup (among others, algorithm keywords are now sorted
1935 lexicographically to avoid constant rewrites).
1938 *) In BN_div() keep a copy of the sign of 'num' before writing the
1939 result to 'rm' because if rm==num the value will be overwritten
1940 and produce the wrong result if 'num' is negative: this caused
1941 problems with BN_mod() and BN_nnmod().
1944 *) Function OCSP_request_verify(). This checks the signature on an
1945 OCSP request and verifies the signer certificate. The signer
1946 certificate is just checked for a generic purpose and OCSP request
1950 *) Add OCSP_check_validity() function to check the validity of OCSP
1951 responses. OCSP responses are prepared in real time and may only
1952 be a few seconds old. Simply checking that the current time lies
1953 between thisUpdate and nextUpdate max reject otherwise valid responses
1954 caused by either OCSP responder or client clock inaccuracy. Instead
1955 we allow thisUpdate and nextUpdate to fall within a certain period of
1956 the current time. The age of the response can also optionally be
1957 checked. Two new options -validity_period and -status_age added to
1961 *) If signature or public key algorithm is unrecognized print out its
1962 OID rather that just UNKNOWN.
1965 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
1966 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
1967 ID to be generated from the issuer certificate alone which can then be
1968 passed to OCSP_id_issuer_cmp().
1971 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
1972 ASN1 modules to export functions returning ASN1_ITEM pointers
1973 instead of the ASN1_ITEM structures themselves. This adds several
1974 new macros which allow the underlying ASN1 function/structure to
1975 be accessed transparently. As a result code should not use ASN1_ITEM
1976 references directly (such as &X509_it) but instead use the relevant
1977 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
1978 use of the new ASN1 code on platforms where exporting structures
1979 is problematical (for example in shared libraries) but exporting
1980 functions returning pointers to structures is not.
1983 *) Add support for overriding the generation of SSL/TLS session IDs.
1984 These callbacks can be registered either in an SSL_CTX or per SSL.
1985 The purpose of this is to allow applications to control, if they wish,
1986 the arbitrary values chosen for use as session IDs, particularly as it
1987 can be useful for session caching in multiple-server environments. A
1988 command-line switch for testing this (and any client code that wishes
1989 to use such a feature) has been added to "s_server".
1990 [Geoff Thorpe, Lutz Jaenicke]
1992 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
1993 of the form '#if defined(...) || defined(...) || ...' and
1994 '#if !defined(...) && !defined(...) && ...'. This also avoids
1995 the growing number of special cases it was previously handling.
1998 *) Make all configuration macros available for application by making
1999 sure they are available in opensslconf.h, by giving them names starting
2000 with "OPENSSL_" to avoid conflicts with other packages and by making
2001 sure e_os2.h will cover all platform-specific cases together with
2003 Additionally, it is now possible to define configuration/platform-
2004 specific names (called "system identities"). In the C code, these
2005 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2006 macro with the name beginning with "OPENSSL_SYS_", which is determined
2007 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2011 *) New option -set_serial to 'req' and 'x509' this allows the serial
2012 number to use to be specified on the command line. Previously self
2013 signed certificates were hard coded with serial number 0 and the
2014 CA options of 'x509' had to use a serial number in a file which was
2018 *) New options to 'ca' utility to support V2 CRL entry extensions.
2019 Currently CRL reason, invalidity date and hold instruction are
2020 supported. Add new CRL extensions to V3 code and some new objects.
2023 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2024 disable standard block padding (aka PKCS#5 padding) in the EVP
2025 API, which was previously mandatory. This means that the data is
2026 not padded in any way and so the total length much be a multiple
2027 of the block size, otherwise an error occurs.
2030 *) Initial (incomplete) OCSP SSL support.
2033 *) New function OCSP_parse_url(). This splits up a URL into its host,
2034 port and path components: primarily to parse OCSP URLs. New -url
2035 option to ocsp utility.
2038 *) New nonce behavior. The return value of OCSP_check_nonce() now
2039 reflects the various checks performed. Applications can decide
2040 whether to tolerate certain situations such as an absent nonce
2041 in a response when one was present in a request: the ocsp application
2042 just prints out a warning. New function OCSP_add1_basic_nonce()
2043 this is to allow responders to include a nonce in a response even if
2044 the request is nonce-less.
2047 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2048 skipped when using openssl x509 multiple times on a single input file,
2049 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2052 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2053 set string type: to handle setting ASN1_TIME structures. Fix ca
2054 utility to correctly initialize revocation date of CRLs.
2057 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2058 the clients preferred ciphersuites and rather use its own preferences.
2059 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2060 Internet Explorer by ensuring unchanged hash method during stepup.
2061 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2064 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2065 to aes and add a new 'exist' option to print out symbols that don't
2069 *) Additional options to ocsp utility to allow flags to be set and
2070 additional certificates supplied.
2073 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2074 OCSP client a number of certificate to only verify the response
2078 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2079 handle the new API. Currently only ECB, CBC modes supported. Add new
2082 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2083 Encryption Standard (AES) Ciphersuites for Transport Layer
2084 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2085 not enabled by default and were not part of the "ALL" ciphersuite
2086 alias because they were not yet official; they could be
2087 explicitly requested by specifying the "AESdraft" ciphersuite
2088 group alias. In the final release of OpenSSL 0.9.7, the group
2089 alias is called "AES" and is part of "ALL".)
2090 [Ben Laurie, Steve Henson, Bodo Moeller]
2092 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2093 request to response.
2096 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2097 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2098 extract information from a certificate request. OCSP_response_create()
2099 creates a response and optionally adds a basic response structure.
2100 OCSP_basic_add1_status() adds a complete single response to a basic
2101 response and returns the OCSP_SINGLERESP structure just added (to allow
2102 extensions to be included for example). OCSP_basic_add1_cert() adds a
2103 certificate to a basic response and OCSP_basic_sign() signs a basic
2104 response with various flags. New helper functions ASN1_TIME_check()
2105 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2106 (converts ASN1_TIME to GeneralizedTime).
2109 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2110 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2111 structure from a certificate. X509_pubkey_digest() digests the public_key
2112 contents: this is used in various key identifiers.
2115 *) Make sk_sort() tolerate a NULL argument.
2116 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2118 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2119 passed by the function are trusted implicitly. If any of them signed the
2120 response then it is assumed to be valid and is not verified.
2123 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2124 to data. This was previously part of the PKCS7 ASN1 code. This
2125 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2126 [Steve Henson, reported by Kenneth R. Robinette
2127 <support@securenetterm.com>]
2129 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2130 routines: without these tracing memory leaks is very painful.
2131 Fix leaks in PKCS12 and PKCS7 routines.
2134 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2135 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2136 effectively meant GeneralizedTime would never be used. Now it
2137 is initialised to -1 but X509_time_adj() now has to check the value
2138 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2139 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2140 [Steve Henson, reported by Kenneth R. Robinette
2141 <support@securenetterm.com>]
2143 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2144 result in a zero length in the ASN1_INTEGER structure which was
2145 not consistent with the structure when d2i_ASN1_INTEGER() was used
2146 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2147 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2148 where it did not print out a minus for negative ASN1_INTEGER.
2151 *) Add summary printout to ocsp utility. The various functions which
2152 convert status values to strings have been renamed to:
2153 OCSP_response_status_str(), OCSP_cert_status_str() and
2154 OCSP_crl_reason_str() and are no longer static. New options
2155 to verify nonce values and to disable verification. OCSP response
2156 printout format cleaned up.
2159 *) Add additional OCSP certificate checks. These are those specified
2160 in RFC2560. This consists of two separate checks: the CA of the
2161 certificate being checked must either be the OCSP signer certificate
2162 or the issuer of the OCSP signer certificate. In the latter case the
2163 OCSP signer certificate must contain the OCSP signing extended key
2164 usage. This check is performed by attempting to match the OCSP
2165 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2166 in the OCSP_CERTID structures of the response.
2169 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2170 and related routines. This uses the standard OpenSSL certificate
2171 verify routines to perform initial checks (just CA validity) and
2172 to obtain the certificate chain. Then additional checks will be
2173 performed on the chain. Currently the root CA is checked to see
2174 if it is explicitly trusted for OCSP signing. This is used to set
2175 a root CA as a global signing root: that is any certificate that
2176 chains to that CA is an acceptable OCSP signing certificate.
2179 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2180 extensions from a separate configuration file.
2181 As when reading extensions from the main configuration file,
2182 the '-extensions ...' option may be used for specifying the
2184 [Massimiliano Pala <madwolf@comune.modena.it>]
2186 *) New OCSP utility. Allows OCSP requests to be generated or
2187 read. The request can be sent to a responder and the output
2188 parsed, outputed or printed in text form. Not complete yet:
2189 still needs to check the OCSP response validity.
2192 *) New subcommands for 'openssl ca':
2193 'openssl ca -status <serial>' prints the status of the cert with
2194 the given serial number (according to the index file).
2195 'openssl ca -updatedb' updates the expiry status of certificates
2197 [Massimiliano Pala <madwolf@comune.modena.it>]
2199 *) New '-newreq-nodes' command option to CA.pl. This is like
2200 '-newreq', but calls 'openssl req' with the '-nodes' option
2201 so that the resulting key is not encrypted.
2202 [Damien Miller <djm@mindrot.org>]
2204 *) New configuration for the GNU Hurd.
2205 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2207 *) Initial code to implement OCSP basic response verify. This
2208 is currently incomplete. Currently just finds the signer's
2209 certificate and verifies the signature on the response.
2212 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2213 value of OPENSSLDIR. This is available via the new '-d' option
2214 to 'openssl version', and is also included in 'openssl version -a'.
2217 *) Allowing defining memory allocation callbacks that will be given
2218 file name and line number information in additional arguments
2219 (a const char* and an int). The basic functionality remains, as
2220 well as the original possibility to just replace malloc(),
2221 realloc() and free() by functions that do not know about these
2222 additional arguments. To register and find out the current
2223 settings for extended allocation functions, the following
2224 functions are provided:
2226 CRYPTO_set_mem_ex_functions
2227 CRYPTO_set_locked_mem_ex_functions
2228 CRYPTO_get_mem_ex_functions
2229 CRYPTO_get_locked_mem_ex_functions
2231 These work the same way as CRYPTO_set_mem_functions and friends.
2232 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2233 extended allocation function is enabled.
2234 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2235 a conventional allocation function is enabled.
2236 [Richard Levitte, Bodo Moeller]
2238 *) Finish off removing the remaining LHASH function pointer casts.
2239 There should no longer be any prototype-casting required when using
2240 the LHASH abstraction, and any casts that remain are "bugs". See
2241 the callback types and macros at the head of lhash.h for details
2242 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2245 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2246 If /dev/[u]random devices are not available or do not return enough
2247 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2249 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2250 /etc/entropy will be queried once each in this sequence, quering stops
2251 when enough entropy was collected without querying more sockets.
2254 *) Change the Unix RAND_poll() variant to be able to poll several
2255 random devices, as specified by DEVRANDOM, until a sufficient amount
2256 of data has been collected. We spend at most 10 ms on each file
2257 (select timeout) and read in non-blocking mode. DEVRANDOM now
2258 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2259 (previously it was just the string "/dev/urandom"), so on typical
2260 platforms the 10 ms delay will never occur.
2261 Also separate out the Unix variant to its own file, rand_unix.c.
2262 For VMS, there's a currently-empty rand_vms.c.
2265 *) Move OCSP client related routines to ocsp_cl.c. These
2266 provide utility functions which an application needing
2267 to issue a request to an OCSP responder and analyse the
2268 response will typically need: as opposed to those which an
2269 OCSP responder itself would need which will be added later.
2271 OCSP_request_sign() signs an OCSP request with an API similar
2272 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2273 response. OCSP_response_get1_basic() extracts basic response
2274 from response. OCSP_resp_find_status(): finds and extracts status
2275 information from an OCSP_CERTID structure (which will be created
2276 when the request structure is built). These are built from lower
2277 level functions which work on OCSP_SINGLERESP structures but
2278 wont normally be used unless the application wishes to examine
2279 extensions in the OCSP response for example.
2281 Replace nonce routines with a pair of functions.
2282 OCSP_request_add1_nonce() adds a nonce value and optionally
2283 generates a random value. OCSP_check_nonce() checks the
2284 validity of the nonce in an OCSP response.
2287 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2288 This doesn't copy the supplied OCSP_CERTID and avoids the
2289 need to free up the newly created id. Change return type
2290 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2291 This can then be used to add extensions to the request.
2292 Deleted OCSP_request_new(), since most of its functionality
2293 is now in OCSP_REQUEST_new() (and the case insensitive name
2294 clash) apart from the ability to set the request name which
2295 will be added elsewhere.
2298 *) Update OCSP API. Remove obsolete extensions argument from
2299 various functions. Extensions are now handled using the new
2300 OCSP extension code. New simple OCSP HTTP function which
2301 can be used to send requests and parse the response.
2304 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2305 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2306 uses the special reorder version of SET OF to sort the attributes
2307 and reorder them to match the encoded order. This resolves a long
2308 standing problem: a verify on a PKCS7 structure just after signing
2309 it used to fail because the attribute order did not match the
2310 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2311 it uses the received order. This is necessary to tolerate some broken
2312 software that does not order SET OF. This is handled by encoding
2313 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2314 to produce the required SET OF.
2317 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2318 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2319 files to get correct declarations of the ASN.1 item variables.
2322 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2323 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2324 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2325 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2326 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2327 ASN1_ITEM and no wrapper functions.
2330 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2331 replace the old function pointer based I/O routines. Change most of
2332 the *_d2i_bio() and *_d2i_fp() functions to use these.
2335 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2336 lines, recognice more "algorithms" that can be deselected, and make
2337 it complain about algorithm deselection that isn't recognised.
2340 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2341 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2342 to use new functions. Add NO_ASN1_OLD which can be set to remove
2343 some old style ASN1 functions: this can be used to determine if old
2344 code will still work when these eventually go away.
2347 *) New extension functions for OCSP structures, these follow the
2348 same conventions as certificates and CRLs.
2351 *) New function X509V3_add1_i2d(). This automatically encodes and
2352 adds an extension. Its behaviour can be customised with various
2353 flags to append, replace or delete. Various wrappers added for
2354 certifcates and CRLs.
2357 *) Fix to avoid calling the underlying ASN1 print routine when
2358 an extension cannot be parsed. Correct a typo in the
2359 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2362 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2363 entries for variables.
2366 *) Add functionality to apps/openssl.c for detecting locking
2367 problems: As the program is single-threaded, all we have
2368 to do is register a locking callback using an array for
2369 storing which locks are currently held by the program.
2372 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2373 SSL_get_ex_data_X509_STORE_idx(), which is used in
2374 ssl_verify_cert_chain() and thus can be called at any time
2375 during TLS/SSL handshakes so that thread-safety is essential.
2376 Unfortunately, the ex_data design is not at all suited
2377 for multi-threaded use, so it probably should be abolished.
2380 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2381 [Broadcom, tweaked and integrated by Geoff Thorpe]
2383 *) Move common extension printing code to new function
2384 X509V3_print_extensions(). Reorganise OCSP print routines and
2385 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2388 *) New function X509_signature_print() to remove duplication in some
2392 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2393 set (this was treated exactly the same as SET OF previously). This
2394 is used to reorder the STACK representing the structure to match the
2395 encoding. This will be used to get round a problem where a PKCS7
2396 structure which was signed could not be verified because the STACK
2397 order did not reflect the encoded order.
2400 *) Reimplement the OCSP ASN1 module using the new code.
2403 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2404 for its ASN1 operations. The old style function pointers still exist
2405 for now but they will eventually go away.
2408 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2409 completely replaces the old ASN1 functionality with a table driven
2410 encoder and decoder which interprets an ASN1_ITEM structure describing
2411 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2412 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2413 has also been converted to the new form.
2416 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2417 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2418 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2419 for negative moduli.
2422 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2423 of not touching the result's sign bit.
2426 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2430 *) Changed the LHASH code to use prototypes for callbacks, and created
2431 macros to declare and implement thin (optionally static) functions
2432 that provide type-safety and avoid function pointer casting for the
2433 type-specific callbacks.
2436 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2438 [Veers Staats <staatsvr@asc.hpc.mil>,
2439 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2441 *) Reformat the FAQ so the different questions and answers can be divided
2442 in sections depending on the subject.
2445 *) Have the zlib compression code load ZLIB.DLL dynamically under
2449 *) New function BN_mod_sqrt for computing square roots modulo a prime
2450 (using the probabilistic Tonelli-Shanks algorithm unless
2451 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2452 be handled deterministically).
2453 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2455 *) Make BN_mod_inverse faster by explicitly handling small quotients
2456 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2457 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2460 *) New function BN_kronecker.
2463 *) Fix BN_gcd so that it works on negative inputs; the result is
2464 positive unless both parameters are zero.
2465 Previously something reasonably close to an infinite loop was
2466 possible because numbers could be growing instead of shrinking
2467 in the implementation of Euclid's algorithm.
2470 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2471 sign of the number in question.
2473 Fix BN_is_word(a,w) to work correctly for w == 0.
2475 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2476 because its test if the absolute value of 'a' equals 'w'.
2477 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2478 it exists mostly for use in the implementations of BN_is_zero(),
2479 BN_is_one(), and BN_is_word().
2482 *) New function BN_swap.
2485 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2486 the exponentiation functions are more likely to produce reasonable
2487 results on negative inputs.
2490 *) Change BN_mod_mul so that the result is always non-negative.
2491 Previously, it could be negative if one of the factors was negative;
2492 I don't think anyone really wanted that behaviour.
2495 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2496 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2497 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2498 and add new functions:
2507 BN_mod_lshift1_quick
2511 These functions always generate non-negative results.
2513 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2514 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2516 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2517 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2518 be reduced modulo m.
2519 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2522 The following entry accidentily appeared in the CHANGES file
2523 distributed with OpenSSL 0.9.7. The modifications described in
2524 it do *not* apply to OpenSSL 0.9.7.
2526 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2527 was actually never needed) and in BN_mul(). The removal in BN_mul()
2528 required a small change in bn_mul_part_recursive() and the addition
2529 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2530 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2531 bn_sub_words() and bn_add_words() except they take arrays with
2536 *) In 'openssl passwd', verify passwords read from the terminal
2537 unless the '-salt' option is used (which usually means that
2538 verification would just waste user's time since the resulting
2539 hash is going to be compared with some given password hash)
2540 or the new '-noverify' option is used.
2542 This is an incompatible change, but it does not affect
2543 non-interactive use of 'openssl passwd' (passwords on the command
2544 line, '-stdin' option, '-in ...' option) and thus should not
2548 *) Remove all references to RSAref, since there's no more need for it.
2551 *) Make DSO load along a path given through an environment variable
2552 (SHLIB_PATH) with shl_load().
2555 *) Constify the ENGINE code as a result of BIGNUM constification.
2556 Also constify the RSA code and most things related to it. In a
2557 few places, most notable in the depth of the ASN.1 code, ugly
2558 casts back to non-const were required (to be solved at a later
2562 *) Make it so the openssl application has all engines loaded by default.
2565 *) Constify the BIGNUM routines a little more.
2568 *) Add the following functions:
2570 ENGINE_load_cswift()
2572 ENGINE_load_atalla()
2574 ENGINE_load_builtin_engines()
2576 That way, an application can itself choose if external engines that
2577 are built-in in OpenSSL shall ever be used or not. The benefit is
2578 that applications won't have to be linked with libdl or other dso
2579 libraries unless it's really needed.
2581 Changed 'openssl engine' to load all engines on demand.
2582 Changed the engine header files to avoid the duplication of some
2583 declarations (they differed!).
2586 *) 'openssl engine' can now list capabilities.
2589 *) Better error reporting in 'openssl engine'.
2592 *) Never call load_dh_param(NULL) in s_server.
2595 *) Add engine application. It can currently list engines by name and
2596 identity, and test if they are actually available.
2599 *) Improve RPM specification file by forcing symbolic linking and making
2600 sure the installed documentation is also owned by root.root.
2601 [Damien Miller <djm@mindrot.org>]
2603 *) Give the OpenSSL applications more possibilities to make use of
2604 keys (public as well as private) handled by engines.
2607 *) Add OCSP code that comes from CertCo.
2610 *) Add VMS support for the Rijndael code.
2613 *) Added untested support for Nuron crypto accelerator.
2616 *) Add support for external cryptographic devices. This code was
2617 previously distributed separately as the "engine" branch.
2618 [Geoff Thorpe, Richard Levitte]
2620 *) Rework the filename-translation in the DSO code. It is now possible to
2621 have far greater control over how a "name" is turned into a filename
2622 depending on the operating environment and any oddities about the
2623 different shared library filenames on each system.
2626 *) Support threads on FreeBSD-elf in Configure.
2629 *) Fix for SHA1 assembly problem with MASM: it produces
2630 warnings about corrupt line number information when assembling
2631 with debugging information. This is caused by the overlapping
2633 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2636 NCONF_get_number() has no error checking at all. As a replacement,
2637 NCONF_get_number_e() is defined (_e for "error checking") and is
2638 promoted strongly. The old NCONF_get_number is kept around for
2639 binary backward compatibility.
2640 Make it possible for methods to load from something other than a BIO,
2641 by providing a function pointer that is given a name instead of a BIO.
2642 For example, this could be used to load configuration data from an
2646 *) Fix for non blocking accept BIOs. Added new I/O special reason
2647 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2648 with non blocking I/O was not possible because no retry code was
2649 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2653 *) Added the beginnings of Rijndael support.
2656 *) Fix for bug in DirectoryString mask setting. Add support for
2657 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2658 to allow certificate printing to more controllable, additional
2659 'certopt' option to 'x509' to allow new printing options to be
2663 *) Clean old EAY MD5 hack from e_os.h.
2666 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
2668 *) Fix various bugs revealed by running the NISCC test suite:
2670 Stop out of bounds reads in the ASN1 code when presented with
2671 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2673 If verify callback ignores invalid public key errors don't try to check
2674 certificate signature with the NULL public key.
2678 *) Fix various bugs revealed by running the NISCC test suite:
2680 Stop out of bounds reads in the ASN1 code when presented with
2681 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2683 If verify callback ignores invalid public key errors don't try to check
2684 certificate signature with the NULL public key.
2688 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2689 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2693 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2694 extra data after the compression methods not only for TLS 1.0
2695 but also for SSL 3.0 (as required by the specification).
2696 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2698 *) Change X509_certificate_type() to mark the key as exported/exportable
2699 when it's 512 *bits* long, not 512 bytes.
2702 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
2704 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2705 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2706 a protocol version number mismatch like a decryption error
2707 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2710 *) Turn on RSA blinding by default in the default implementation
2711 to avoid a timing attack. Applications that don't want it can call
2712 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2713 They would be ill-advised to do so in most cases.
2714 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2716 *) Change RSA blinding code so that it works when the PRNG is not
2717 seeded (in this case, the secret RSA exponent is abused as
2718 an unpredictable seed -- if it is not unpredictable, there
2719 is no point in blinding anyway). Make RSA blinding thread-safe
2720 by remembering the creator's thread ID in rsa->blinding and
2721 having all other threads use local one-time blinding factors
2722 (this requires more computation than sharing rsa->blinding, but
2723 avoids excessive locking; and if an RSA object is not shared
2724 between threads, blinding will still be very fast).
2727 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
2729 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2730 via timing by performing a MAC computation even if incorrrect
2731 block cipher padding has been found. This is a countermeasure
2732 against active attacks where the attacker has to distinguish
2733 between bad padding and a MAC verification error. (CAN-2003-0078)
2735 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2736 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2737 Martin Vuagnoux (EPFL, Ilion)]
2739 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2741 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2742 memory from it's contents. This is done with a counter that will
2743 place alternating values in each byte. This can be used to solve
2744 two issues: 1) the removal of calls to memset() by highly optimizing
2745 compilers, and 2) cleansing with other values than 0, since those can
2746 be read through on certain media, for example a swap space on disk.
2749 *) Bugfix: client side session caching did not work with external caching,
2750 because the session->cipher setting was not restored when reloading
2751 from the external cache. This problem was masked, when
2752 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
2753 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
2756 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
2757 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
2758 [Zeev Lieber <zeev-l@yahoo.com>]
2760 *) Undo an undocumented change introduced in 0.9.6e which caused
2761 repeated calls to OpenSSL_add_all_ciphers() and
2762 OpenSSL_add_all_digests() to be ignored, even after calling
2766 *) Change the default configuration reader to deal with last line not
2767 being properly terminated.
2770 *) Change X509_NAME_cmp() so it applies the special rules on handling
2771 DN values that are of type PrintableString, as well as RDNs of type
2772 emailAddress where the value has the type ia5String.
2773 [stefank@valicert.com via Richard Levitte]
2775 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
2776 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
2777 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
2778 the bitwise-OR of the two for use by the majority of applications
2779 wanting this behaviour, and update the docs. The documented
2780 behaviour and actual behaviour were inconsistent and had been
2781 changing anyway, so this is more a bug-fix than a behavioural
2783 [Geoff Thorpe, diagnosed by Nadav Har'El]
2785 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
2786 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
2789 *) Fix initialization code race conditions in
2790 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
2791 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
2792 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
2793 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
2794 ssl2_get_cipher_by_char(),
2795 ssl3_get_cipher_by_char().
2796 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
2798 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
2799 the cached sessions are flushed, as the remove_cb() might use ex_data
2800 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
2801 (see [openssl.org #212]).
2802 [Geoff Thorpe, Lutz Jaenicke]
2804 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
2805 length, instead of the encoding length to d2i_ASN1_OBJECT.
2808 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
2810 *) [In 0.9.6g-engine release:]
2811 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
2812 [Lynn Gazis <lgazis@rainbow.com>]
2814 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
2816 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
2817 and get fix the header length calculation.
2818 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
2819 Alon Kantor <alonk@checkpoint.com> (and others),
2822 *) Use proper error handling instead of 'assertions' in buffer
2823 overflow checks added in 0.9.6e. This prevents DoS (the
2824 assertions could call abort()).
2825 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
2827 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
2829 *) Add various sanity checks to asn1_get_length() to reject
2830 the ASN1 length bytes if they exceed sizeof(long), will appear
2831 negative or the content length exceeds the length of the
2833 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2835 *) Fix cipher selection routines: ciphers without encryption had no flags
2836 for the cipher strength set and where therefore not handled correctly
2837 by the selection routines (PR #130).
2840 *) Fix EVP_dsa_sha macro.
2844 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
2845 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
2846 that was added in OpenSSL 0.9.6d.
2848 As the countermeasure turned out to be incompatible with some
2849 broken SSL implementations, the new option is part of SSL_OP_ALL.
2850 SSL_OP_ALL is usually employed when compatibility with weird SSL
2851 implementations is desired (e.g. '-bugs' option to 's_client' and
2852 's_server'), so the new option is automatically set in many
2856 *) Changes in security patch:
2858 Changes marked "(CHATS)" were sponsored by the Defense Advanced
2859 Research Projects Agency (DARPA) and Air Force Research Laboratory,
2860 Air Force Materiel Command, USAF, under agreement number
2863 *) Add various sanity checks to asn1_get_length() to reject
2864 the ASN1 length bytes if they exceed sizeof(long), will appear
2865 negative or the content length exceeds the length of the
2866 supplied buffer. (CAN-2002-0659)
2867 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2869 *) Assertions for various potential buffer overflows, not known to
2871 [Ben Laurie (CHATS)]
2873 *) Various temporary buffers to hold ASCII versions of integers were
2874 too small for 64 bit platforms. (CAN-2002-0655)
2875 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
2877 *) Remote buffer overflow in SSL3 protocol - an attacker could
2878 supply an oversized session ID to a client. (CAN-2002-0656)
2879 [Ben Laurie (CHATS)]
2881 *) Remote buffer overflow in SSL2 protocol - an attacker could
2882 supply an oversized client master key. (CAN-2002-0656)
2883 [Ben Laurie (CHATS)]
2885 Changes between 0.9.6c and 0.9.6d [9 May 2002]
2887 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
2888 encoded as NULL) with id-dsa-with-sha1.
2889 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
2891 *) Check various X509_...() return values in apps/req.c.
2892 [Nils Larsch <nla@trustcenter.de>]
2894 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
2895 an end-of-file condition would erronously be flagged, when the CRLF
2896 was just at the end of a processed block. The bug was discovered when
2897 processing data through a buffering memory BIO handing the data to a
2898 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
2899 <ptsekov@syntrex.com> and Nedelcho Stanev.
2902 *) Implement a countermeasure against a vulnerability recently found
2903 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
2904 before application data chunks to avoid the use of known IVs
2905 with data potentially chosen by the attacker.
2908 *) Fix length checks in ssl3_get_client_hello().
2911 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
2912 to prevent ssl3_read_internal() from incorrectly assuming that
2913 ssl3_read_bytes() found application data while handshake
2914 processing was enabled when in fact s->s3->in_read_app_data was
2915 merely automatically cleared during the initial handshake.
2916 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
2918 *) Fix object definitions for Private and Enterprise: they were not
2919 recognized in their shortname (=lowercase) representation. Extend
2920 obj_dat.pl to issue an error when using undefined keywords instead
2921 of silently ignoring the problem (Svenning Sorensen
2922 <sss@sss.dnsalias.net>).
2925 *) Fix DH_generate_parameters() so that it works for 'non-standard'
2926 generators, i.e. generators other than 2 and 5. (Previously, the
2927 code did not properly initialise the 'add' and 'rem' values to
2928 BN_generate_prime().)
2930 In the new general case, we do not insist that 'generator' is
2931 actually a primitive root: This requirement is rather pointless;
2932 a generator of the order-q subgroup is just as good, if not
2936 *) Map new X509 verification errors to alerts. Discovered and submitted by
2937 Tom Wu <tom@arcot.com>.
2940 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
2941 returning non-zero before the data has been completely received
2942 when using non-blocking I/O.
2943 [Bodo Moeller; problem pointed out by John Hughes]
2945 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
2946 [Ben Laurie, Lutz Jaenicke]
2948 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
2949 Yoram Zahavi <YoramZ@gilian.com>).
2952 *) Add information about CygWin 1.3 and on, and preserve proper
2953 configuration for the versions before that.
2954 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2956 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
2957 check whether we deal with a copy of a session and do not delete from
2958 the cache in this case. Problem reported by "Izhar Shoshani Levi"
2959 <izhar@checkpoint.com>.
2962 *) Do not store session data into the internal session cache, if it
2963 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
2964 flag is set). Proposed by Aslam <aslam@funk.com>.
2967 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
2971 *) [In 0.9.6d-engine release:]
2972 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2973 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2975 *) Add the configuration target linux-s390x.
2976 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
2978 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
2979 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
2980 variable as an indication that a ClientHello message has been
2981 received. As the flag value will be lost between multiple
2982 invocations of ssl3_accept when using non-blocking I/O, the
2983 function may not be aware that a handshake has actually taken
2984 place, thus preventing a new session from being added to the
2987 To avoid this problem, we now set s->new_session to 2 instead of
2988 using a local variable.
2989 [Lutz Jaenicke, Bodo Moeller]
2991 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
2992 if the SSL_R_LENGTH_MISMATCH error is detected.
2993 [Geoff Thorpe, Bodo Moeller]
2995 *) New 'shared_ldflag' column in Configure platform table.
2998 *) Fix EVP_CIPHER_mode macro.
2999 ["Dan S. Camper" <dan@bti.net>]
3001 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3002 type, we must throw them away by setting rr->length to 0.
3003 [D P Chang <dpc@qualys.com>]
3005 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3007 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3008 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3009 worked incorrectly for those cases where range = 10..._2 and
3010 3*range is two bits longer than range.)
3013 *) Only add signing time to PKCS7 structures if it is not already
3017 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3018 OBJ_ld_ce should be OBJ_id_ce.
3019 Also some ip-pda OIDs in crypto/objects/objects.txt were
3020 incorrect (cf. RFC 3039).
3021 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3023 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3024 returns early because it has nothing to do.
3025 [Andy Schneider <andy.schneider@bjss.co.uk>]
3027 *) [In 0.9.6c-engine release:]
3028 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3029 [Andy Schneider <andy.schneider@bjss.co.uk>]
3031 *) [In 0.9.6c-engine release:]
3032 Add support for Cryptographic Appliance's keyserver technology.
3033 (Use engine 'keyclient')
3034 [Cryptographic Appliances and Geoff Thorpe]
3036 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3037 is called via tools/c89.sh because arguments have to be
3038 rearranged (all '-L' options must appear before the first object
3040 [Richard Shapiro <rshapiro@abinitio.com>]
3042 *) [In 0.9.6c-engine release:]
3043 Add support for Broadcom crypto accelerator cards, backported
3045 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3047 *) [In 0.9.6c-engine release:]
3048 Add support for SureWare crypto accelerator cards from
3049 Baltimore Technologies. (Use engine 'sureware')
3050 [Baltimore Technologies and Mark Cox]
3052 *) [In 0.9.6c-engine release:]
3053 Add support for crypto accelerator cards from Accelerated
3054 Encryption Processing, www.aep.ie. (Use engine 'aep')
3055 [AEP Inc. and Mark Cox]
3057 *) Add a configuration entry for gcc on UnixWare.
3058 [Gary Benson <gbenson@redhat.com>]
3060 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3061 messages are stored in a single piece (fixed-length part and
3062 variable-length part combined) and fix various bugs found on the way.
3065 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3066 instead. BIO_gethostbyname() does not know what timeouts are
3067 appropriate, so entries would stay in cache even when they have
3069 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3071 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3072 faced with a pathologically small ClientHello fragment that does
3073 not contain client_version: Instead of aborting with an error,
3074 simply choose the highest available protocol version (i.e.,
3075 TLS 1.0 unless it is disabled). In practice, ClientHello
3076 messages are never sent like this, but this change gives us
3077 strictly correct behaviour at least for TLS.
3080 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3081 never resets s->method to s->ctx->method when called from within
3082 one of the SSL handshake functions.
3083 [Bodo Moeller; problem pointed out by Niko Baric]
3085 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3086 (sent using the client's version number) if client_version is
3087 smaller than the protocol version in use. Also change
3088 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3089 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3090 the client will at least see that alert.
3093 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3097 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3098 client receives HelloRequest while in a handshake.
3099 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3101 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3102 should end in 'break', not 'goto end' which circuments various
3103 cleanups done in state SSL_ST_OK. But session related stuff
3104 must be disabled for SSL_ST_OK in the case that we just sent a
3107 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3108 before just sending a HelloRequest.
3109 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3111 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3112 reveal whether illegal block cipher padding was found or a MAC
3113 verification error occured. (Neither SSLerr() codes nor alerts
3114 are directly visible to potential attackers, but the information
3115 may leak via logfiles.)
3117 Similar changes are not required for the SSL 2.0 implementation
3118 because the number of padding bytes is sent in clear for SSL 2.0,
3119 and the extra bytes are just ignored. However ssl/s2_pkt.c
3120 failed to verify that the purported number of padding bytes is in
3124 *) Add OpenUNIX-8 support including shared libraries
3125 (Boyd Lynn Gerber <gerberb@zenez.com>).
3128 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3129 'wristwatch attack' using huge encoding parameters (cf.
3130 James H. Manger's CRYPTO 2001 paper). Note that the
3131 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3132 encoding parameters and hence was not vulnerable.
3135 *) BN_sqr() bug fix.
3136 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3138 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3139 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3140 followed by modular reduction.
3141 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3143 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3144 equivalent based on BN_pseudo_rand() instead of BN_rand().
3147 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3148 This function was broken, as the check for a new client hello message
3149 to handle SGC did not allow these large messages.
3150 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3153 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3156 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3157 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3160 *) Rework the configuration and shared library support for Tru64 Unix.
3161 The configuration part makes use of modern compiler features and
3162 still retains old compiler behavior for those that run older versions
3163 of the OS. The shared library support part includes a variant that
3164 uses the RPATH feature, and is available through the special
3165 configuration target "alpha-cc-rpath", which will never be selected
3167 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3169 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3170 with the same message size as in ssl3_get_certificate_request().
3171 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3172 messages might inadvertently be reject as too long.
3173 [Petr Lampa <lampa@fee.vutbr.cz>]
3175 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3178 *) Modified SSL library such that the verify_callback that has been set
3179 specificly for an SSL object with SSL_set_verify() is actually being
3180 used. Before the change, a verify_callback set with this function was
3181 ignored and the verify_callback() set in the SSL_CTX at the time of
3182 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3183 to allow the necessary settings.
3186 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3187 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3188 done automatically (in contradiction to the requirements of the C
3189 standard). This made problems when used from OpenSSH.
3192 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3193 dh->length and always used
3195 BN_rand_range(priv_key, dh->p).
3197 BN_rand_range() is not necessary for Diffie-Hellman, and this
3198 specific range makes Diffie-Hellman unnecessarily inefficient if
3199 dh->length (recommended exponent length) is much smaller than the
3200 length of dh->p. We could use BN_rand_range() if the order of
3201 the subgroup was stored in the DH structure, but we only have
3206 BN_rand(priv_key, l, ...)
3208 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3214 RSA_eay_public_encrypt
3215 RSA_eay_private_decrypt
3216 RSA_eay_private_encrypt (signing)
3217 RSA_eay_public_decrypt (signature verification)
3219 (default implementations for RSA_public_encrypt,
3220 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3221 always reject numbers >= n.
3224 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3225 to synchronize access to 'locking_thread'. This is necessary on
3226 systems where access to 'locking_thread' (an 'unsigned long'
3227 variable) is not atomic.
3230 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3231 *before* setting the 'crypto_lock_rand' flag. The previous code had
3232 a race condition if 0 is a valid thread ID.
3233 [Travis Vitek <vitek@roguewave.com>]
3235 *) Add support for shared libraries under Irix.
3236 [Albert Chin-A-Young <china@thewrittenword.com>]
3238 *) Add configuration option to build on Linux on both big-endian and
3240 [Ralf Baechle <ralf@uni-koblenz.de>]
3242 *) Add the possibility to create shared libraries on HP-UX.
3245 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3247 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3248 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3249 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3250 PRNG state recovery was possible based on the output of
3251 one PRNG request appropriately sized to gain knowledge on
3252 'md' followed by enough consecutive 1-byte PRNG requests
3253 to traverse all of 'state'.
3255 1. When updating 'md_local' (the current thread's copy of 'md')
3256 during PRNG output generation, hash all of the previous
3257 'md_local' value, not just the half used for PRNG output.
3259 2. Make the number of bytes from 'state' included into the hash
3260 independent from the number of PRNG bytes requested.
3262 The first measure alone would be sufficient to avoid
3263 Markku-Juhani's attack. (Actually it had never occurred
3264 to me that the half of 'md_local' used for chaining was the
3265 half from which PRNG output bytes were taken -- I had always
3266 assumed that the secret half would be used.) The second
3267 measure makes sure that additional data from 'state' is never
3268 mixed into 'md_local' in small portions; this heuristically
3269 further strengthens the PRNG.
3272 *) Fix crypto/bn/asm/mips3.s.
3275 *) When only the key is given to "enc", the IV is undefined. Print out
3276 an error message in this case.
3279 *) Handle special case when X509_NAME is empty in X509 printing routines.
3282 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3283 positive and less than q.
3286 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3287 used: it isn't thread safe and the add_lock_callback should handle
3289 [Paul Rose <Paul.Rose@bridge.com>]
3291 *) Verify that incoming data obeys the block size in
3292 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3296 [Ulf Möller, Bodo Möller]
3298 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3299 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3300 when fixing the server behaviour for backwards-compatible 'client
3301 hello' messages. (Note that the attack is impractical against
3302 SSL 3.0 and TLS 1.0 anyway because length and version checking
3303 means that the probability of guessing a valid ciphertext is
3304 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3307 Before 0.9.5, the countermeasure (hide the error by generating a
3308 random 'decryption result') did not work properly because
3309 ERR_clear_error() was missing, meaning that SSL_get_error() would
3310 detect the supposedly ignored error.
3312 Both problems are now fixed.
3315 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3316 (previously it was 1024).
3319 *) Fix for compatibility mode trust settings: ignore trust settings
3320 unless some valid trust or reject settings are present.
3323 *) Fix for blowfish EVP: its a variable length cipher.
3326 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3327 parameters in DSA public key structures and return an error in the
3328 DSA routines if parameters are absent.
3331 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3332 in the current directory if neither $RANDFILE nor $HOME was set.
3333 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3334 caused some confusion to Windows users who haven't defined $HOME.
3335 Thus RAND_file_name() is changed again: e_os.h can define a
3336 DEFAULT_HOME, which will be used if $HOME is not set.
3337 For Windows, we use "C:"; on other platforms, we still require
3338 environment variables.
3340 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3341 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3342 having multiple threads call RAND_poll() concurrently.
3345 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3346 combination of a flag and a thread ID variable.
3347 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3348 flag), *other* threads can enter ssleay_add_bytes without obeying
3349 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3350 that they do not hold after the first thread unsets add_do_not_lock).
3353 *) Change bctest again: '-x' expressions are not available in all
3357 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3359 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3360 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3362 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3363 the default extension for executables, if any. Also, make the perl
3364 scripts that use symlink() to test if it really exists and use "cp"
3365 if it doesn't. All this made OpenSSL compilable and installable in
3369 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3370 If SEQUENCE is length is indefinite just set c->slen to the total
3371 amount of data available.
3372 [Steve Henson, reported by shige@FreeBSD.org]
3373 [This change does not apply to 0.9.7.]
3375 *) Change bctest to avoid here-documents inside command substitution
3376 (workaround for FreeBSD /bin/sh bug).
3377 For compatibility with Ultrix, avoid shell functions (introduced
3378 in the bctest version that searches along $PATH).
3381 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3382 with des_encrypt() defined on some operating systems, like Solaris
3386 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3387 On the Importance of Eliminating Errors in Cryptographic
3388 Computations, J. Cryptology 14 (2001) 2, 101-119,
3389 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3392 *) MIPS assembler BIGNUM division bug fix.
3395 *) Disabled incorrect Alpha assembler code.
3398 *) Fix PKCS#7 decode routines so they correctly update the length
3399 after reading an EOC for the EXPLICIT tag.
3401 [This change does not apply to 0.9.7.]
3403 *) Fix bug in PKCS#12 key generation routines. This was triggered
3404 if a 3DES key was generated with a 0 initial byte. Include
3405 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3406 (but broken) behaviour.
3409 *) Enhance bctest to search for a working bc along $PATH and print
3411 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3413 *) Fix memory leaks in err.c: free err_data string if necessary;
3414 don't write to the wrong index in ERR_set_error_data.
3417 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3421 *) Replace rdtsc with _emit statements for VC++ version 5.
3422 [Jeremy Cooper <jeremy@baymoo.org>]
3424 *) Make it possible to reuse SSLv2 sessions.
3427 *) In copy_email() check for >= 0 as a return value for
3428 X509_NAME_get_index_by_NID() since 0 is a valid index.
3429 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3431 *) Avoid coredump with unsupported or invalid public keys by checking if
3432 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3433 PKCS7_verify() fails with non detached data.
3436 *) Don't use getenv in library functions when run as setuid/setgid.
3437 New function OPENSSL_issetugid().
3440 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3441 due to incorrect handling of multi-threading:
3443 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3445 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3447 3. Count how many times MemCheck_off() has been called so that
3448 nested use can be treated correctly. This also avoids
3449 inband-signalling in the previous code (which relied on the
3450 assumption that thread ID 0 is impossible).
3453 *) Add "-rand" option also to s_client and s_server.
3456 *) Fix CPU detection on Irix 6.x.
3457 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3458 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3460 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3463 [This change does not apply to 0.9.7.]
3465 *) Use the cached encoding of an X509_NAME structure rather than
3466 copying it. This is apparently the reason for the libsafe "errors"
3467 but the code is actually correct.
3470 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3471 Bleichenbacher's DSA attack.
3472 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3473 to be set and top=0 forces the highest bit to be set; top=-1 is new
3474 and leaves the highest bit random.
3475 [Ulf Moeller, Bodo Moeller]
3477 *) In the NCONF_...-based implementations for CONF_... queries
3478 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3479 a temporary CONF structure with the data component set to NULL
3480 (which gives segmentation faults in lh_retrieve).
3481 Instead, use NULL for the CONF pointer in CONF_get_string and
3482 CONF_get_number (which may use environment variables) and directly
3483 return NULL from CONF_get_section.
3486 *) Fix potential buffer overrun for EBCDIC.
3489 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3490 keyUsage if basicConstraints absent for a CA.
3493 *) Make SMIME_write_PKCS7() write mail header values with a format that
3494 is more generally accepted (no spaces before the semicolon), since
3495 some programs can't parse those values properly otherwise. Also make
3496 sure BIO's that break lines after each write do not create invalid
3500 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3501 macros previously used would not encode an empty SEQUENCE OF
3502 and break the signature.
3504 [This change does not apply to 0.9.7.]
3506 *) Zero the premaster secret after deriving the master secret in
3510 *) Add some EVP_add_digest_alias registrations (as found in
3511 OpenSSL_add_all_digests()) to SSL_library_init()
3512 aka OpenSSL_add_ssl_algorithms(). This provides improved
3513 compatibility with peers using X.509 certificates
3514 with unconventional AlgorithmIdentifier OIDs.
3517 *) Fix for Irix with NO_ASM.
3518 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3520 *) ./config script fixes.
3521 [Ulf Moeller, Richard Levitte]
3523 *) Fix 'openssl passwd -1'.
3526 *) Change PKCS12_key_gen_asc() so it can cope with non null
3527 terminated strings whose length is passed in the passlen
3528 parameter, for example from PEM callbacks. This was done
3529 by adding an extra length parameter to asc2uni().
3530 [Steve Henson, reported by <oddissey@samsung.co.kr>]
3532 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
3533 call failed, free the DSA structure.
3536 *) Fix to uni2asc() to cope with zero length Unicode strings.
3537 These are present in some PKCS#12 files.
3540 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
3541 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
3542 when writing a 32767 byte record.
3543 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
3545 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
3546 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
3548 (RSA objects have a reference count access to which is protected
3549 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
3550 so they are meant to be shared between threads.)
3551 [Bodo Moeller, Geoff Thorpe; original patch submitted by
3552 "Reddie, Steven" <Steven.Reddie@ca.com>]
3554 *) Fix a deadlock in CRYPTO_mem_leaks().
3557 *) Use better test patterns in bntest.
3560 *) rand_win.c fix for Borland C.
3563 *) BN_rshift bugfix for n == 0.
3566 *) Add a 'bctest' script that checks for some known 'bc' bugs
3567 so that 'make test' does not abort just because 'bc' is broken.
3570 *) Store verify_result within SSL_SESSION also for client side to
3571 avoid potential security hole. (Re-used sessions on the client side
3572 always resulted in verify_result==X509_V_OK, not using the original
3573 result of the server certificate verification.)
3576 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
3577 SSL3_RT_APPLICATION_DATA, return 0.
3578 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
3582 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
3583 releases, have been re-implemented by renaming the previous
3584 implementations of ssl2_read and ssl3_read to ssl2_read_internal
3585 and ssl3_read_internal, respectively, and adding 'peek' parameters
3586 to them. The new ssl[23]_{read,peek} functions are calls to
3587 ssl[23]_read_internal with the 'peek' flag set appropriately.
3588 A 'peek' parameter has also been added to ssl3_read_bytes, which
3589 does the actual work for ssl3_read_internal.
3592 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
3593 the method-specific "init()" handler. Also clean up ex_data after
3594 calling the method-specific "finish()" handler. Previously, this was
3595 happening the other way round.
3598 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
3599 The previous value, 12, was not always sufficient for BN_mod_exp().
3602 *) Make sure that shared libraries get the internal name engine with
3603 the full version number and not just 0. This should mark the
3604 shared libraries as not backward compatible. Of course, this should
3605 be changed again when we can guarantee backward binary compatibility.
3608 *) Fix typo in get_cert_by_subject() in by_dir.c
3609 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
3611 *) Rework the system to generate shared libraries:
3613 - Make note of the expected extension for the shared libraries and
3614 if there is a need for symbolic links from for example libcrypto.so.0
3615 to libcrypto.so.0.9.7. There is extended info in Configure for
3618 - Make as few rebuilds of the shared libraries as possible.
3620 - Still avoid linking the OpenSSL programs with the shared libraries.
3622 - When installing, install the shared libraries separately from the
3626 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
3628 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
3629 and not in SSL_clear because the latter is also used by the
3630 accept/connect functions; previously, the settings made by
3631 SSL_set_read_ahead would be lost during the handshake.
3632 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
3634 *) Correct util/mkdef.pl to be selective about disabled algorithms.
3635 Previously, it would create entries for disableed algorithms no
3639 *) Added several new manual pages for SSL_* function.
3642 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
3644 *) In ssl23_get_client_hello, generate an error message when faced
3645 with an initial SSL 3.0/TLS record that is too small to contain the
3646 first two bytes of the ClientHello message, i.e. client_version.
3647 (Note that this is a pathologic case that probably has never happened
3648 in real life.) The previous approach was to use the version number
3649 from the record header as a substitute; but our protocol choice
3650 should not depend on that one because it is not authenticated
3651 by the Finished messages.
3654 *) More robust randomness gathering functions for Windows.
3655 [Jeffrey Altman <jaltman@columbia.edu>]
3657 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
3658 not set then we don't setup the error code for issuer check errors
3659 to avoid possibly overwriting other errors which the callback does
3660 handle. If an application does set the flag then we assume it knows
3661 what it is doing and can handle the new informational codes
3665 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
3666 a general "ANY" type, as such it should be able to decode anything
3667 including tagged types. However it didn't check the class so it would
3668 wrongly interpret tagged types in the same way as their universal
3669 counterpart and unknown types were just rejected. Changed so that the
3670 tagged and unknown types are handled in the same way as a SEQUENCE:
3671 that is the encoding is stored intact. There is also a new type
3672 "V_ASN1_OTHER" which is used when the class is not universal, in this
3673 case we have no idea what the actual type is so we just lump them all
3677 *) On VMS, stdout may very well lead to a file that is written to
3678 in a record-oriented fashion. That means that every write() will
3679 write a separate record, which will be read separately by the
3680 programs trying to read from it. This can be very confusing.
3682 The solution is to put a BIO filter in the way that will buffer
3683 text until a linefeed is reached, and then write everything a
3684 line at a time, so every record written will be an actual line,
3685 not chunks of lines and not (usually doesn't happen, but I've
3686 seen it once) several lines in one record. BIO_f_linebuffer() is
3689 Currently, it's a VMS-only method, because that's where it has
3690 been tested well enough.
3693 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
3694 it can return incorrect results.
3695 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
3696 but it was in 0.9.6-beta[12].)
3699 *) Disable the check for content being present when verifying detached
3700 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
3701 include zero length content when signing messages.
3704 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
3705 BIO_ctrl (for BIO pairs).
3708 *) Add DSO method for VMS.
3711 *) Bug fix: Montgomery multiplication could produce results with the
3715 *) Add RPM specification openssl.spec and modify it to build three
3716 packages. The default package contains applications, application
3717 documentation and run-time libraries. The devel package contains
3718 include files, static libraries and function documentation. The
3719 doc package contains the contents of the doc directory. The original
3720 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
3723 *) Add a large number of documentation files for many SSL routines.
3724 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
3726 *) Add a configuration entry for Sony News 4.
3727 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
3729 *) Don't set the two most significant bits to one when generating a
3730 random number < q in the DSA library.
3733 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
3734 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
3735 the underlying transport is blocking) if a handshake took place.
3736 (The default behaviour is needed by applications such as s_client
3737 and s_server that use select() to determine when to use SSL_read;
3738 but for applications that know in advance when to expect data, it
3739 just makes things more complicated.)
3742 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
3746 *) Add a few more EBCDIC conditionals that make `req' and `x509'
3747 work better on such systems.
3748 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
3750 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
3751 Update PKCS12_parse() so it copies the friendlyName and the
3752 keyid to the certificates aux info.
3755 *) Fix bug in PKCS7_verify() which caused an infinite loop
3756 if there was more than one signature.
3757 [Sven Uszpelkat <su@celocom.de>]
3759 *) Major change in util/mkdef.pl to include extra information
3760 about each symbol, as well as presentig variables as well
3761 as functions. This change means that there's n more need
3762 to rebuild the .num files when some algorithms are excluded.
3765 *) Allow the verify time to be set by an application,
3766 rather than always using the current time.
3769 *) Phase 2 verify code reorganisation. The certificate
3770 verify code now looks up an issuer certificate by a
3771 number of criteria: subject name, authority key id
3772 and key usage. It also verifies self signed certificates
3773 by the same criteria. The main comparison function is
3774 X509_check_issued() which performs these checks.
3776 Lot of changes were necessary in order to support this
3777 without completely rewriting the lookup code.
3779 Authority and subject key identifier are now cached.
3781 The LHASH 'certs' is X509_STORE has now been replaced
3782 by a STACK_OF(X509_OBJECT). This is mainly because an
3783 LHASH can't store or retrieve multiple objects with
3784 the same hash value.
3786 As a result various functions (which were all internal
3787 use only) have changed to handle the new X509_STORE
3788 structure. This will break anything that messed round
3789 with X509_STORE internally.
3791 The functions X509_STORE_add_cert() now checks for an
3792 exact match, rather than just subject name.
3794 The X509_STORE API doesn't directly support the retrieval
3795 of multiple certificates matching a given criteria, however
3796 this can be worked round by performing a lookup first
3797 (which will fill the cache with candidate certificates)
3798 and then examining the cache for matches. This is probably
3799 the best we can do without throwing out X509_LOOKUP
3800 entirely (maybe later...).
3802 The X509_VERIFY_CTX structure has been enhanced considerably.
3804 All certificate lookup operations now go via a get_issuer()
3805 callback. Although this currently uses an X509_STORE it
3806 can be replaced by custom lookups. This is a simple way
3807 to bypass the X509_STORE hackery necessary to make this
3808 work and makes it possible to use more efficient techniques
3809 in future. A very simple version which uses a simple
3810 STACK for its trusted certificate store is also provided
3811 using X509_STORE_CTX_trusted_stack().
3813 The verify_cb() and verify() callbacks now have equivalents
3814 in the X509_STORE_CTX structure.
3816 X509_STORE_CTX also has a 'flags' field which can be used
3817 to customise the verify behaviour.
3820 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
3821 excludes S/MIME capabilities.
3824 *) When a certificate request is read in keep a copy of the
3825 original encoding of the signed data and use it when outputing
3826 again. Signatures then use the original encoding rather than
3827 a decoded, encoded version which may cause problems if the
3828 request is improperly encoded.
3831 *) For consistency with other BIO_puts implementations, call
3832 buffer_write(b, ...) directly in buffer_puts instead of calling
3835 In BIO_puts, increment b->num_write as in BIO_write.
3836 [Peter.Sylvester@EdelWeb.fr]
3838 *) Fix BN_mul_word for the case where the word is 0. (We have to use
3839 BN_zero, we may not return a BIGNUM with an array consisting of
3843 *) Avoid calling abort() from within the library when problems are
3844 detected, except if preprocessor symbols have been defined
3845 (such as REF_CHECK, BN_DEBUG etc.).
3848 *) New openssl application 'rsautl'. This utility can be
3849 used for low level RSA operations. DER public key
3850 BIO/fp routines also added.
3853 *) New Configure entry and patches for compiling on QNX 4.
3854 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
3856 *) A demo state-machine implementation was sponsored by
3857 Nuron (http://www.nuron.com/) and is now available in
3858 demos/state_machine.
3861 *) New options added to the 'dgst' utility for signature
3862 generation and verification.
3865 *) Unrecognized PKCS#7 content types are now handled via a
3866 catch all ASN1_TYPE structure. This allows unsupported
3867 types to be stored as a "blob" and an application can
3868 encode and decode it manually.
3871 *) Fix various signed/unsigned issues to make a_strex.c
3873 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
3875 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
3876 length if passed a buffer. ASN1_INTEGER_to_BN failed
3877 if passed a NULL BN and its argument was negative.
3878 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
3880 *) Modification to PKCS#7 encoding routines to output definite
3881 length encoding. Since currently the whole structures are in
3882 memory there's not real point in using indefinite length
3883 constructed encoding. However if OpenSSL is compiled with
3884 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
3887 *) Added BIO_vprintf() and BIO_vsnprintf().
3890 *) Added more prefixes to parse for in the the strings written
3891 through a logging bio, to cover all the levels that are available
3892 through syslog. The prefixes are now:
3894 PANIC, EMERG, EMR => LOG_EMERG
3895 ALERT, ALR => LOG_ALERT
3896 CRIT, CRI => LOG_CRIT
3897 ERROR, ERR => LOG_ERR
3898 WARNING, WARN, WAR => LOG_WARNING
3899 NOTICE, NOTE, NOT => LOG_NOTICE
3900 INFO, INF => LOG_INFO
3901 DEBUG, DBG => LOG_DEBUG
3903 and as before, if none of those prefixes are present at the
3904 beginning of the string, LOG_ERR is chosen.
3906 On Win32, the LOG_* levels are mapped according to this:
3908 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
3909 LOG_WARNING => EVENTLOG_WARNING_TYPE
3910 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
3914 *) Made it possible to reconfigure with just the configuration
3915 argument "reconf" or "reconfigure". The command line arguments
3916 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
3917 and are retrieved from there when reconfiguring.
3921 [Assar Westerlund <assar@sics.se>, Richard Levitte]
3923 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
3926 *) The obj_dat.pl script was messing up the sorting of object
3927 names. The reason was that it compared the quoted version
3928 of strings as a result "OCSP" > "OCSP Signing" because
3929 " > SPACE. Changed script to store unquoted versions of
3930 names and add quotes on output. It was also omitting some
3931 names from the lookup table if they were given a default
3932 value (that is if SN is missing it is given the same
3933 value as LN and vice versa), these are now added on the
3934 grounds that if an object has a name we should be able to
3935 look it up. Finally added warning output when duplicate
3936 short or long names are found.
3939 *) Changes needed for Tandem NSK.
3940 [Scott Uroff <scott@xypro.com>]
3942 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
3943 RSA_padding_check_SSLv23(), special padding was never detected
3944 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
3945 version rollback attacks was not effective.
3947 In s23_clnt.c, don't use special rollback-attack detection padding
3948 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
3949 client; similarly, in s23_srvr.c, don't do the rollback check if
3950 SSL 2.0 is the only protocol enabled in the server.
3953 *) Make it possible to get hexdumps of unprintable data with 'openssl
3954 asn1parse'. By implication, the functions ASN1_parse_dump() and
3955 BIO_dump_indent() are added.
3958 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
3959 these print out strings and name structures based on various
3960 flags including RFC2253 support and proper handling of
3961 multibyte characters. Added options to the 'x509' utility
3962 to allow the various flags to be set.
3965 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
3966 Also change the functions X509_cmp_current_time() and
3967 X509_gmtime_adj() work with an ASN1_TIME structure,
3968 this will enable certificates using GeneralizedTime in validity
3969 dates to be checked.
3972 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
3973 negative public key encodings) on by default,
3974 NO_NEG_PUBKEY_BUG can be set to disable it.
3977 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
3978 content octets. An i2c_ASN1_OBJECT is unnecessary because
3979 the encoding can be trivially obtained from the structure.
3982 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
3983 not read locks (CRYPTO_r_[un]lock).
3986 *) A first attempt at creating official support for shared
3987 libraries through configuration. I've kept it so the
3988 default is static libraries only, and the OpenSSL programs
3989 are always statically linked for now, but there are
3990 preparations for dynamic linking in place.
3991 This has been tested on Linux and Tru64.
3994 *) Randomness polling function for Win9x, as described in:
3995 Peter Gutmann, Software Generation of Practically Strong
3999 *) Fix so PRNG is seeded in req if using an already existing
4003 *) New options to smime application. -inform and -outform
4004 allow alternative formats for the S/MIME message including
4005 PEM and DER. The -content option allows the content to be
4006 specified separately. This should allow things like Netscape
4007 form signing output easier to verify.
4010 *) Fix the ASN1 encoding of tags using the 'long form'.
4013 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
4014 STRING types. These convert content octets to and from the
4015 underlying type. The actual tag and length octets are
4016 already assumed to have been read in and checked. These
4017 are needed because all other string types have virtually
4018 identical handling apart from the tag. By having versions
4019 of the ASN1 functions that just operate on content octets
4020 IMPLICIT tagging can be handled properly. It also allows
4021 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
4022 and ASN1_INTEGER are identical apart from the tag.
4025 *) Change the handling of OID objects as follows:
4027 - New object identifiers are inserted in objects.txt, following
4028 the syntax given in objects.README.
4029 - objects.pl is used to process obj_mac.num and create a new
4031 - obj_dat.pl is used to create a new obj_dat.h, using the data in
4034 This is currently kind of a hack, and the perl code in objects.pl
4035 isn't very elegant, but it works as I intended. The simplest way
4036 to check that it worked correctly is to look in obj_dat.h and
4037 check the array nid_objs and make sure the objects haven't moved
4038 around (this is important!). Additions are OK, as well as
4039 consistent name changes.
4042 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
4045 *) Addition of the command line parameter '-rand file' to 'openssl req'.
4046 The given file adds to whatever has already been seeded into the
4047 random pool through the RANDFILE configuration file option or
4048 environment variable, or the default random state file.
4051 *) mkstack.pl now sorts each macro group into lexical order.
4052 Previously the output order depended on the order the files
4053 appeared in the directory, resulting in needless rewriting
4057 *) Patches to make OpenSSL compile under Win32 again. Mostly
4058 work arounds for the VC++ problem that it treats func() as
4059 func(void). Also stripped out the parts of mkdef.pl that
4060 added extra typesafe functions: these no longer exist.
4063 *) Reorganisation of the stack code. The macros are now all
4064 collected in safestack.h . Each macro is defined in terms of
4065 a "stack macro" of the form SKM_<name>(type, a, b). The
4066 DEBUG_SAFESTACK is now handled in terms of function casts,
4067 this has the advantage of retaining type safety without the
4068 use of additional functions. If DEBUG_SAFESTACK is not defined
4069 then the non typesafe macros are used instead. Also modified the
4070 mkstack.pl script to handle the new form. Needs testing to see
4071 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
4072 the default if no major problems. Similar behaviour for ASN1_SET_OF
4073 and PKCS12_STACK_OF.
4076 *) When some versions of IIS use the 'NET' form of private key the
4077 key derivation algorithm is different. Normally MD5(password) is
4078 used as a 128 bit RC4 key. In the modified case
4079 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
4080 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
4081 as the old Netscape_RSA functions except they have an additional
4082 'sgckey' parameter which uses the modified algorithm. Also added
4083 an -sgckey command line option to the rsa utility. Thanks to
4084 Adrian Peck <bertie@ncipher.com> for posting details of the modified
4085 algorithm to openssl-dev.
4088 *) The evp_local.h macros were using 'c.##kname' which resulted in
4089 invalid expansion on some systems (SCO 5.0.5 for example).
4090 Corrected to 'c.kname'.
4091 [Phillip Porch <root@theporch.com>]
4093 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
4094 a STACK of email addresses from a certificate or request, these look
4095 in the subject name and the subject alternative name extensions and
4096 omit any duplicate addresses.
4099 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
4100 This makes DSA verification about 2 % faster.
4103 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
4104 (meaning that now 2^5 values will be precomputed, which is only 4 KB
4105 plus overhead for 1024 bit moduli).
4106 This makes exponentiations about 0.5 % faster for 1024 bit
4107 exponents (as measured by "openssl speed rsa2048").
4110 *) Rename memory handling macros to avoid conflicts with other
4112 Malloc => OPENSSL_malloc
4113 Malloc_locked => OPENSSL_malloc_locked
4114 Realloc => OPENSSL_realloc
4115 Free => OPENSSL_free
4118 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
4119 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
4122 *) CygWin32 support.
4123 [John Jarvie <jjarvie@newsguy.com>]
4125 *) The type-safe stack code has been rejigged. It is now only compiled
4126 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
4127 by default all type-specific stack functions are "#define"d back to
4128 standard stack functions. This results in more streamlined output
4129 but retains the type-safety checking possibilities of the original
4133 *) The STACK code has been cleaned up, and certain type declarations
4134 that didn't make a lot of sense have been brought in line. This has
4135 also involved a cleanup of sorts in safestack.h to more correctly
4136 map type-safe stack functions onto their plain stack counterparts.
4137 This work has also resulted in a variety of "const"ifications of
4138 lots of the code, especially "_cmp" operations which should normally
4139 be prototyped with "const" parameters anyway.
4142 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
4143 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
4144 (The PRNG state consists of two parts, the large pool 'state' and 'md',
4145 where all of 'md' is used each time the PRNG is used, but 'state'
4146 is used only indexed by a cyclic counter. As entropy may not be
4147 well distributed from the beginning, 'md' is important as a
4148 chaining variable. However, the output function chains only half
4149 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
4150 all of 'md', and seeding with STATE_SIZE dummy bytes will result
4151 in all of 'state' being rewritten, with the new values depending
4152 on virtually all of 'md'. This overcomes the 80 bit limitation.)
4155 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
4156 the handshake is continued after ssl_verify_cert_chain();
4157 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
4158 can lead to 'unexplainable' connection aborts later.
4159 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
4161 *) Major EVP API cipher revision.
4162 Add hooks for extra EVP features. This allows various cipher
4163 parameters to be set in the EVP interface. Support added for variable
4164 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
4165 setting of RC2 and RC5 parameters.
4167 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
4170 Remove lots of duplicated code from the EVP library. For example *every*
4171 cipher init() function handles the 'iv' in the same way according to the
4172 cipher mode. They also all do nothing if the 'key' parameter is NULL and
4173 for CFB and OFB modes they zero ctx->num.
4175 New functionality allows removal of S/MIME code RC2 hack.
4177 Most of the routines have the same form and so can be declared in terms
4180 By shifting this to the top level EVP_CipherInit() it can be removed from
4181 all individual ciphers. If the cipher wants to handle IVs or keys
4182 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
4185 Change lots of functions like EVP_EncryptUpdate() to now return a
4186 value: although software versions of the algorithms cannot fail
4187 any installed hardware versions can.
4190 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
4191 this option is set, tolerate broken clients that send the negotiated
4192 protocol version number instead of the requested protocol version
4196 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
4197 i.e. non-zero for export ciphersuites, zero otherwise.
4198 Previous versions had this flag inverted, inconsistent with
4199 rsa_tmp_cb (..._TMP_RSA_CB).
4200 [Bodo Moeller; problem reported by Amit Chopra]
4202 *) Add missing DSA library text string. Work around for some IIS
4203 key files with invalid SEQUENCE encoding.
4206 *) Add a document (doc/standards.txt) that list all kinds of standards
4207 and so on that are implemented in OpenSSL.
4210 *) Enhance c_rehash script. Old version would mishandle certificates
4211 with the same subject name hash and wouldn't handle CRLs at all.
4212 Added -fingerprint option to crl utility, to support new c_rehash
4216 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
4219 *) Fix for SSL server purpose checking. Server checking was
4220 rejecting certificates which had extended key usage present
4221 but no ssl client purpose.
4222 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
4224 *) Make PKCS#12 code work with no password. The PKCS#12 spec
4225 is a little unclear about how a blank password is handled.
4226 Since the password in encoded as a BMPString with terminating
4227 double NULL a zero length password would end up as just the
4228 double NULL. However no password at all is different and is
4229 handled differently in the PKCS#12 key generation code. NS
4230 treats a blank password as zero length. MSIE treats it as no
4231 password on export: but it will try both on import. We now do
4232 the same: PKCS12_parse() tries zero length and no password if
4233 the password is set to "" or NULL (NULL is now a valid password:
4234 it wasn't before) as does the pkcs12 application.
4237 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
4238 perror when PEM_read_bio_X509_REQ fails, the error message must
4239 be obtained from the error queue.
4242 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
4243 it in ERR_remove_state if appropriate, and change ERR_get_state
4244 accordingly to avoid race conditions (this is necessary because
4245 thread_hash is no longer constant once set).
4248 *) Bugfix for linux-elf makefile.one.
4251 *) RSA_get_default_method() will now cause a default
4252 RSA_METHOD to be chosen if one doesn't exist already.
4253 Previously this was only set during a call to RSA_new()
4254 or RSA_new_method(NULL) meaning it was possible for
4255 RSA_get_default_method() to return NULL.
4258 *) Added native name translation to the existing DSO code
4259 that will convert (if the flag to do so is set) filenames
4260 that are sufficiently small and have no path information
4261 into a canonical native form. Eg. "blah" converted to
4262 "libblah.so" or "blah.dll" etc.
4265 *) New function ERR_error_string_n(e, buf, len) which is like
4266 ERR_error_string(e, buf), but writes at most 'len' bytes
4267 including the 0 terminator. For ERR_error_string_n, 'buf'
4269 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
4271 *) CONF library reworked to become more general. A new CONF
4272 configuration file reader "class" is implemented as well as a
4273 new functions (NCONF_*, for "New CONF") to handle it. The now
4274 old CONF_* functions are still there, but are reimplemented to
4275 work in terms of the new functions. Also, a set of functions
4276 to handle the internal storage of the configuration data is
4277 provided to make it easier to write new configuration file
4278 reader "classes" (I can definitely see something reading a
4279 configuration file in XML format, for example), called _CONF_*,
4280 or "the configuration storage API"...
4282 The new configuration file reading functions are:
4284 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
4285 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
4287 NCONF_default, NCONF_WIN32
4289 NCONF_dump_fp, NCONF_dump_bio
4291 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
4292 NCONF_new creates a new CONF object. This works in the same way
4293 as other interfaces in OpenSSL, like the BIO interface.
4294 NCONF_dump_* dump the internal storage of the configuration file,
4295 which is useful for debugging. All other functions take the same
4296 arguments as the old CONF_* functions wth the exception of the
4297 first that must be a `CONF *' instead of a `LHASH *'.
4299 To make it easer to use the new classes with the old CONF_* functions,
4300 the function CONF_set_default_method is provided.
4303 *) Add '-tls1' option to 'openssl ciphers', which was already
4304 mentioned in the documentation but had not been implemented.
4305 (This option is not yet really useful because even the additional
4306 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
4309 *) Initial DSO code added into libcrypto for letting OpenSSL (and
4310 OpenSSL-based applications) load shared libraries and bind to
4311 them in a portable way.
4312 [Geoff Thorpe, with contributions from Richard Levitte]
4314 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
4316 *) Make sure _lrotl and _lrotr are only used with MSVC.
4318 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
4319 (the default implementation of RAND_status).
4321 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
4322 to '-clrext' (= clear extensions), as intended and documented.
4323 [Bodo Moeller; inconsistency pointed out by Michael Attili
4326 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
4327 was larger than the MD block size.
4328 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
4330 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
4331 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
4332 using the passed key: if the passed key was a private key the result
4333 of X509_print(), for example, would be to print out all the private key
4337 *) des_quad_cksum() byte order bug fix.
4338 [Ulf Möller, using the problem description in krb4-0.9.7, where
4339 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
4341 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
4343 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
4345 *) For easily testing in shell scripts whether some command
4346 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
4347 returns with exit code 0 iff no command of the given name is available.
4348 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
4349 the output goes to stdout and nothing is printed to stderr.
4350 Additional arguments are always ignored.
4352 Since for each cipher there is a command of the same name,
4353 the 'no-cipher' compilation switches can be tested this way.
4355 ('openssl no-XXX' is not able to detect pseudo-commands such
4356 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
4359 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
4362 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
4363 is set; it will be thrown away anyway because each handshake creates
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