5 Changes between 0.9.7e and 0.9.8 [xx XXX xxxx]
7 *) Improved PowerPC platform support. Most notably BIGNUM assembler
8 implementation contributed by IBM.
9 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
11 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
12 exponent rather than 'unsigned long'. There is a corresponding change to
13 the new 'rsa_keygen' element of the RSA_METHOD structure.
14 [Jelte Jansen, Geoff Thorpe]
16 *) Functionality for creating the initial serial number file is now
17 moved from CA.pl to the 'ca' utility with a new option -create_serial.
19 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
20 number file to 1, which is bound to cause problems. To avoid
21 the problems while respecting compatibility between different 0.9.7
22 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
23 CA.pl for serial number initialization. With the new release 0.9.8,
24 we can fix the problem directly in the 'ca' utility.)
27 *) Reduced header interdepencies by declaring more opaque objects in
28 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
29 give fewer recursive includes, which could break lazy source code - so
30 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
31 developers should define this symbol when building and using openssl to
32 ensure they track the recommended behaviour, interfaces, [etc], but
33 backwards-compatible behaviour prevails when this isn't defined.
36 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
39 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
40 This will generate a random key of the appropriate length based on the
41 cipher context. The EVP_CIPHER can provide its own random key generation
42 routine to support keys of a specific form. This is used in the des and
43 3des routines to generate a key of the correct parity. Update S/MIME
44 code to use new functions and hence generate correct parity DES keys.
45 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
46 valid (weak or incorrect parity).
49 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
50 as looking them up. This is useful when the verified structure may contain
51 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
52 present unless the new PKCS7_NO_CRL flag is asserted.
55 *) Extend ASN1 oid configuration module. It now additionally accepts the
58 shortName = some long name, 1.2.3.4
61 *) Reimplemented the BN_CTX implementation. There is now no more static
62 limitation on the number of variables it can handle nor the depth of the
63 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
64 information can now expand as required, and rather than having a single
65 static array of bignums, BN_CTX now uses a linked-list of such arrays
66 allowing it to expand on demand whilst maintaining the usefulness of
70 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
71 to allow all RSA operations to function using a single BN_CTX.
74 *) Preliminary support for certificate policy evaluation and checking. This
75 is initially intended to pass the tests outlined in "Conformance Testing
76 of Relying Party Client Certificate Path Processing Logic" v1.07.
79 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
80 remained unused and not that useful. A variety of other little bignum
81 tweaks and fixes have also been made continuing on from the audit (see
85 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
86 associated ASN1, EVP and SSL functions and old ASN1 macros.
89 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
90 and this should never fail. So the return value from the use of
91 BN_set_word() (which can fail due to needless expansion) is now deprecated;
92 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
95 *) BN_CTX_get() should return zero-valued bignums, providing the same
96 initialised value as BN_new().
97 [Geoff Thorpe, suggested by Ulf Möller]
99 *) Support for inhibitAnyPolicy certificate extension.
102 *) An audit of the BIGNUM code is underway, for which debugging code is
103 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
104 is considered valid when processing BIGNUMs, and causes execution to
105 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
106 further steps are taken to deliberately pollute unused data in BIGNUM
107 structures to try and expose faulty code further on. For now, openssl will
108 (in its default mode of operation) continue to tolerate the inconsistent
109 forms that it has tolerated in the past, but authors and packagers should
110 consider trying openssl and their own applications when compiled with
111 these debugging symbols defined. It will help highlight potential bugs in
112 their own code, and will improve the test coverage for OpenSSL itself. At
113 some point, these tighter rules will become openssl's default to improve
114 maintainability, though the assert()s and other overheads will remain only
115 in debugging configurations. See bn.h for more details.
116 [Geoff Thorpe, Nils Larsch, Ulf Möller]
118 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
119 that can only be obtained through BN_CTX_new() (which implicitly
120 initialises it). The presence of this function only made it possible
121 to overwrite an existing structure (and cause memory leaks).
124 *) Because of the callback-based approach for implementing LHASH as a
125 template type, lh_insert() adds opaque objects to hash-tables and
126 lh_doall() or lh_doall_arg() are typically used with a destructor callback
127 to clean up those corresponding objects before destroying the hash table
128 (and losing the object pointers). So some over-zealous constifications in
129 LHASH have been relaxed so that lh_insert() does not take (nor store) the
130 objects as "const" and the lh_doall[_arg] callback wrappers are not
131 prototyped to have "const" restrictions on the object pointers they are
132 given (and so aren't required to cast them away any more).
135 *) The tmdiff.h API was so ugly and minimal that our own timing utility
136 (speed) prefers to use its own implementation. The two implementations
137 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
138 its object type properly exposed (MS_TM) instead of casting to/from "char
139 *". This may still change yet if someone realises MS_TM and "ms_time_***"
140 aren't necessarily the greatest nomenclatures - but this is what was used
141 internally to the implementation so I've used that for now.
144 *) Ensure that deprecated functions do not get compiled when
145 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
146 the self-tests were still using deprecated key-generation functions so
147 these have been updated also.
150 *) Reorganise PKCS#7 code to separate the digest location functionality
151 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
152 New function PKCS7_set_digest() to set the digest type for PKCS#7
153 digestedData type. Add additional code to correctly generate the
154 digestedData type and add support for this type in PKCS7 initialization
158 *) New function PKCS7_set0_type_other() this initializes a PKCS7
159 structure of type "other".
162 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
163 sure the loop does correctly stop and breaking ("division by zero")
164 modulus operations are not performed. The (pre-generated) prime
165 table crypto/bn/bn_prime.h was already correct, but it could not be
166 re-generated on some platforms because of the "division by zero"
167 situation in the script.
168 [Ralf S. Engelschall]
170 *) Update support for ECC-based TLS ciphersuites according to
171 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
172 SHA-1 now is only used for "small" curves (where the
173 representation of a field element takes up to 24 bytes); for
174 larger curves, the field element resulting from ECDH is directly
175 used as premaster secret.
176 [Douglas Stebila (Sun Microsystems Laboratories)]
178 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
179 curve secp160r1 to the tests.
180 [Douglas Stebila (Sun Microsystems Laboratories)]
182 *) Add the possibility to load symbols globally with DSO.
183 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
185 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
186 control of the error stack.
189 *) Add support for STORE in ENGINE.
192 *) Add the STORE type. The intention is to provide a common interface
193 to certificate and key stores, be they simple file-based stores, or
194 HSM-type store, or LDAP stores, or...
195 NOTE: The code is currently UNTESTED and isn't really used anywhere.
198 *) Add a generic structure called OPENSSL_ITEM. This can be used to
199 pass a list of arguments to any function as well as provide a way
200 for a function to pass data back to the caller.
203 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
204 works like BUF_strdup() but can be used to duplicate a portion of
205 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
209 *) Add the function sk_find_ex() which works like sk_find(), but will
210 return an index to an element even if an exact match couldn't be
211 found. The index is guaranteed to point at the element where the
212 searched-for key would be inserted to preserve sorting order.
215 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
216 takes an extra flags argument for optional functionality. Currently,
217 the following flags are defined:
219 OBJ_BSEARCH_VALUE_ON_NOMATCH
220 This one gets OBJ_bsearch_ex() to return a pointer to the first
221 element where the comparing function returns a negative or zero
224 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
225 This one gets OBJ_bsearch_ex() to return a pointer to the first
226 element where the comparing function returns zero. This is useful
227 if there are more than one element where the comparing function
231 *) Make it possible to create self-signed certificates with 'openssl ca'
232 in such a way that the self-signed certificate becomes part of the
233 CA database and uses the same mechanisms for serial number generation
234 as all other certificate signing. The new flag '-selfsign' enables
235 this functionality. Adapt CA.sh and CA.pl.in.
238 *) Add functionality to check the public key of a certificate request
239 against a given private. This is useful to check that a certificate
240 request can be signed by that key (self-signing).
243 *) Make it possible to have multiple active certificates with the same
244 subject in the CA index file. This is done only if the keyword
245 'unique_subject' is set to 'no' in the main CA section (default
246 if 'CA_default') of the configuration file. The value is saved
247 with the database itself in a separate index attribute file,
248 named like the index file with '.attr' appended to the name.
251 *) Generate muti valued AVAs using '+' notation in config files for
255 *) Support for nameConstraints certificate extension.
258 *) Support for policyConstraints certificate extension.
261 *) Support for policyMappings certificate extension.
264 *) Make sure the default DSA_METHOD implementation only uses its
265 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
266 and change its own handlers to be NULL so as to remove unnecessary
267 indirection. This lets alternative implementations fallback to the
268 default implementation more easily.
271 *) Support for directoryName in GeneralName related extensions
275 *) Make it possible to link applications using Makefile.shared.
276 Make that possible even when linking against static libraries!
279 *) Support for single pass processing for S/MIME signing. This now
280 means that S/MIME signing can be done from a pipe, in addition
281 cleartext signing (multipart/signed type) is effectively streaming
282 and the signed data does not need to be all held in memory.
284 This is done with a new flag PKCS7_STREAM. When this flag is set
285 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
286 is done after the data is output (and digests calculated) in
290 *) Add full support for -rpath/-R, both in shared libraries and
291 applications, at least on the platforms where it's known how
295 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
296 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
297 will now compute a table of multiples of the generator that
298 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
299 faster (notably in the case of a single point multiplication,
301 [Nils Larsch, Bodo Moeller]
303 *) IPv6 support for certificate extensions. The various extensions
304 which use the IP:a.b.c.d can now take IPv6 addresses using the
305 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
309 *) Added an ENGINE that implements RSA by performing private key
310 exponentiations with the GMP library. The conversions to and from
311 GMP's mpz_t format aren't optimised nor are any montgomery forms
312 cached, and on x86 it appears OpenSSL's own performance has caught up.
313 However there are likely to be other architectures where GMP could
314 provide a boost. This ENGINE is not built in by default, but it can be
315 specified at Configure time and should be accompanied by the necessary
316 linker additions, eg;
317 ./config -DOPENSSL_USE_GMP -lgmp
320 *) "openssl engine" will not display ENGINE/DSO load failure errors when
321 testing availability of engines with "-t" - the old behaviour is
322 produced by increasing the feature's verbosity with "-tt".
325 *) ECDSA routines: under certain error conditions uninitialized BN objects
326 could be freed. Solution: make sure initialization is performed early
327 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
331 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
332 and DH_METHOD (eg. by ENGINE implementations) to override the normal
333 software implementations. For DSA and DH, parameter generation can
334 also be overriden by providing the appropriate method callbacks.
337 *) Change the "progress" mechanism used in key-generation and
338 primality testing to functions that take a new BN_GENCB pointer in
339 place of callback/argument pairs. The new API functions have "_ex"
340 postfixes and the older functions are reimplemented as wrappers for
341 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
342 declarations of the old functions to help (graceful) attempts to
343 migrate to the new functions. Also, the new key-generation API
344 functions operate on a caller-supplied key-structure and return
345 success/failure rather than returning a key or NULL - this is to
346 help make "keygen" another member function of RSA_METHOD etc.
348 Example for using the new callback interface:
350 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
354 BN_GENCB_set(&my_cb, my_callback, my_arg);
356 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
357 /* For the meaning of a, b in calls to my_callback(), see the
358 * documentation of the function that calls the callback.
359 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
360 * my_callback should return 1 if it wants BN_is_prime_ex()
361 * to continue, or 0 to stop.
366 *) Change the ZLIB compression method to be stateful, and make it
367 available to TLS with the number defined in
368 draft-ietf-tls-compression-04.txt.
371 *) Add the ASN.1 structures and functions for CertificatePair, which
372 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
374 CertificatePair ::= SEQUENCE {
375 forward [0] Certificate OPTIONAL,
376 reverse [1] Certificate OPTIONAL,
377 -- at least one of the pair shall be present -- }
379 Also implement the PEM functions to read and write certificate
380 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
382 This needed to be defined, mostly for the sake of the LDAP
383 attribute crossCertificatePair, but may prove useful elsewhere as
387 *) Make it possible to inhibit symlinking of shared libraries in
388 Makefile.shared, for Cygwin's sake.
391 *) Extend the BIGNUM API by creating new macros that behave like
394 void BN_set_sign(BIGNUM *a, int neg);
395 int BN_get_sign(const BIGNUM *a);
397 and avoid the need to access 'a->neg' directly in applications.
398 [Nils Larsch <nla@trustcenter.de>]
400 *) Implement fast modular reduction for pseudo-Mersenne primes
401 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
402 EC_GROUP_new_curve_GFp() will now automatically use this
404 [Nils Larsch <nla@trustcenter.de>]
406 *) Add new lock type (CRYPTO_LOCK_BN).
409 *) Change the ENGINE framework to automatically load engines
410 dynamically from specific directories unless they could be
411 found to already be built in or loaded. Move all the
412 current engines except for the cryptodev one to a new
414 The engines in engines/ are built as shared libraries if
415 the "shared" options was given to ./Configure or ./config.
416 Otherwise, they are inserted in libcrypto.a.
417 /usr/local/ssl/engines is the default directory for dynamic
418 engines, but that can be overriden at configure time through
419 the usual use of --prefix and/or --openssldir, and at run
420 time with the environment variable OPENSSL_ENGINES.
421 [Geoff Thorpe and Richard Levitte]
423 *) Add Makefile.shared, a helper makefile to build shared
424 libraries. Addapt Makefile.org.
427 *) Add version info to Win32 DLLs.
428 [Peter 'Luna' Runestig" <peter@runestig.com>]
430 *) Add new 'medium level' PKCS#12 API. Certificates and keys
431 can be added using this API to created arbitrary PKCS#12
432 files while avoiding the low level API.
434 New options to PKCS12_create(), key or cert can be NULL and
435 will then be omitted from the output file. The encryption
436 algorithm NIDs can be set to -1 for no encryption, the mac
437 iteration count can be set to 0 to omit the mac.
439 Enhance pkcs12 utility by making the -nokeys and -nocerts
440 options work when creating a PKCS#12 file. New option -nomac
441 to omit the mac, NONE can be set for an encryption algorithm.
442 New code is modified to use the enhanced PKCS12_create()
443 instead of the low level API.
446 *) Extend ASN1 encoder to support indefinite length constructed
447 encoding. This can output sequences tags and octet strings in
448 this form. Modify pk7_asn1.c to support indefinite length
449 encoding. This is experimental and needs additional code to
450 be useful, such as an ASN1 bio and some enhanced streaming
453 Extend template encode functionality so that tagging is passed
454 down to the template encoder.
457 *) Let 'openssl req' fail if an argument to '-newkey' is not
458 recognized instead of using RSA as a default.
461 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
462 As these are not official, they are not included in "ALL";
463 the "ECCdraft" ciphersuite group alias can be used to select them.
464 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
466 *) Add ECDH engine support.
467 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
469 *) Add ECDH in new directory crypto/ecdh/.
470 [Douglas Stebila (Sun Microsystems Laboratories)]
472 *) Let BN_rand_range() abort with an error after 100 iterations
473 without success (which indicates a broken PRNG).
476 *) Change BN_mod_sqrt() so that it verifies that the input value
477 is really the square of the return value. (Previously,
478 BN_mod_sqrt would show GIGO behaviour.)
481 *) Add named elliptic curves over binary fields from X9.62, SECG,
482 and WAP/WTLS; add OIDs that were still missing.
484 [Sheueling Chang Shantz and Douglas Stebila
485 (Sun Microsystems Laboratories)]
487 *) Extend the EC library for elliptic curves over binary fields
488 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
491 EC_GF2m_simple_method
495 EC_GROUP_new_curve_GF2m
496 EC_GROUP_set_curve_GF2m
497 EC_GROUP_get_curve_GF2m
498 EC_POINT_set_affine_coordinates_GF2m
499 EC_POINT_get_affine_coordinates_GF2m
500 EC_POINT_set_compressed_coordinates_GF2m
502 Point compression for binary fields is disabled by default for
503 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
506 As binary polynomials are represented as BIGNUMs, various members
507 of the EC_GROUP and EC_POINT data structures can be shared
508 between the implementations for prime fields and binary fields;
509 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
510 are essentially identical to their ..._GFp counterparts.
511 (For simplicity, the '..._GFp' prefix has been dropped from
512 various internal method names.)
514 An internal 'field_div' method (similar to 'field_mul' and
515 'field_sqr') has been added; this is used only for binary fields.
517 [Sheueling Chang Shantz and Douglas Stebila
518 (Sun Microsystems Laboratories)]
520 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
521 through methods ('mul', 'precompute_mult').
523 The generic implementations (now internally called 'ec_wNAF_mul'
524 and 'ec_wNAF_precomputed_mult') remain the default if these
525 methods are undefined.
527 [Sheueling Chang Shantz and Douglas Stebila
528 (Sun Microsystems Laboratories)]
530 *) New function EC_GROUP_get_degree, which is defined through
531 EC_METHOD. For curves over prime fields, this returns the bit
532 length of the modulus.
534 [Sheueling Chang Shantz and Douglas Stebila
535 (Sun Microsystems Laboratories)]
537 *) New functions EC_GROUP_dup, EC_POINT_dup.
538 (These simply call ..._new and ..._copy).
540 [Sheueling Chang Shantz and Douglas Stebila
541 (Sun Microsystems Laboratories)]
543 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
544 Polynomials are represented as BIGNUMs (where the sign bit is not
545 used) in the following functions [macros]:
548 BN_GF2m_sub [= BN_GF2m_add]
549 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
550 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
551 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
553 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
554 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
555 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
556 BN_GF2m_cmp [= BN_ucmp]
558 (Note that only the 'mod' functions are actually for fields GF(2^m).
559 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
561 For some functions, an the irreducible polynomial defining a
562 field can be given as an 'unsigned int[]' with strictly
563 decreasing elements giving the indices of those bits that are set;
564 i.e., p[] represents the polynomial
565 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
567 p[0] > p[1] > ... > p[k] = 0.
568 This applies to the following functions:
573 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
574 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
577 BN_GF2m_mod_solve_quad_arr
581 Conversion can be performed by the following functions:
586 bntest.c has additional tests for binary polynomial arithmetic.
588 Two implementations for BN_GF2m_mod_div() are available.
589 The default algorithm simply uses BN_GF2m_mod_inv() and
590 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
591 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
592 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
594 [Sheueling Chang Shantz and Douglas Stebila
595 (Sun Microsystems Laboratories)]
597 *) Add new error code 'ERR_R_DISABLED' that can be used when some
598 functionality is disabled at compile-time.
599 [Douglas Stebila <douglas.stebila@sun.com>]
601 *) Change default behaviour of 'openssl asn1parse' so that more
602 information is visible when viewing, e.g., a certificate:
604 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
605 mode the content of non-printable OCTET STRINGs is output in a
606 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
607 avoid the appearance of a printable string.
608 [Nils Larsch <nla@trustcenter.de>]
610 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
612 EC_GROUP_set_asn1_flag()
613 EC_GROUP_get_asn1_flag()
614 EC_GROUP_set_point_conversion_form()
615 EC_GROUP_get_point_conversion_form()
616 These control ASN1 encoding details:
617 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
618 has been set to OPENSSL_EC_NAMED_CURVE.
619 - Points are encoded in uncompressed form by default; options for
620 asn1_for are as for point2oct, namely
621 POINT_CONVERSION_COMPRESSED
622 POINT_CONVERSION_UNCOMPRESSED
623 POINT_CONVERSION_HYBRID
625 Also add 'seed' and 'seed_len' members to EC_GROUP with access
629 EC_GROUP_get_seed_len()
630 This is used only for ASN1 purposes (so far).
631 [Nils Larsch <nla@trustcenter.de>]
633 *) Add 'field_type' member to EC_METHOD, which holds the NID
634 of the appropriate field type OID. The new function
635 EC_METHOD_get_field_type() returns this value.
636 [Nils Larsch <nla@trustcenter.de>]
643 providing useful interfaces to EC_POINT_point2oct() and
644 EC_POINT_oct2point().
645 [Nils Larsch <nla@trustcenter.de>]
647 *) Change internals of the EC library so that the functions
648 EC_GROUP_set_generator()
649 EC_GROUP_get_generator()
651 EC_GROUP_get_cofactor()
652 are implemented directly in crypto/ec/ec_lib.c and not dispatched
653 to methods, which would lead to unnecessary code duplication when
654 adding different types of curves.
655 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
657 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
658 arithmetic, and such that modified wNAFs are generated
659 (which avoid length expansion in many cases).
662 *) Add a function EC_GROUP_check_discriminant() (defined via
663 EC_METHOD) that verifies that the curve discriminant is non-zero.
665 Add a function EC_GROUP_check() that makes some sanity tests
666 on a EC_GROUP, its generator and order. This includes
667 EC_GROUP_check_discriminant().
668 [Nils Larsch <nla@trustcenter.de>]
670 *) Add ECDSA in new directory crypto/ecdsa/.
672 Add applications 'openssl ecparam' and 'openssl ecdsa'
673 (these are based on 'openssl dsaparam' and 'openssl dsa').
675 ECDSA support is also included in various other files across the
676 library. Most notably,
677 - 'openssl req' now has a '-newkey ecdsa:file' option;
678 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
679 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
680 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
681 them suitable for ECDSA where domain parameters must be
682 extracted before the specific public key;
683 - ECDSA engine support has been added.
684 [Nils Larsch <nla@trustcenter.de>]
686 *) Include some named elliptic curves, and add OIDs from X9.62,
687 SECG, and WAP/WTLS. Each curve can be obtained from the new
689 EC_GROUP_new_by_nid(),
690 and the list of available named curves can be obtained with
691 EC_get_builtin_curves().
692 Also add a 'curve_name' member to EC_GROUP objects, which can be
696 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
698 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
699 was actually never needed) and in BN_mul(). The removal in BN_mul()
700 required a small change in bn_mul_part_recursive() and the addition
701 of the functions bn_cmp_part_words(), bn_sub_part_words() and
702 bn_add_part_words(), which do the same thing as bn_cmp_words(),
703 bn_sub_words() and bn_add_words() except they take arrays with
707 Changes between 0.9.7d and 0.9.7e [XX xxx XXXX]
709 *) Reduce the chances of duplicate issuer name and serial numbers (in
710 violation of RFC3280) using the OpenSSL certificate creation utilities.
711 This is done by creating a random 64 bit value for the initial serial
712 number when a serial number file is created or when a self signed
713 certificate is created using 'openssl req -x509'. The initial serial
714 number file is created using 'openssl x509 -next_serial' in CA.pl
715 rather than being initialized to 1.
718 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
720 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
721 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
722 [Joe Orton, Steve Henson]
724 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
726 [Joe Orton, Steve Henson]
728 *) Make it possible to have multiple active certificates with the same
729 subject in the CA index file. This is done only if the keyword
730 'unique_subject' is set to 'no' in the main CA section (default
731 if 'CA_default') of the configuration file. The value is saved
732 with the database itself in a separate index attribute file,
733 named like the index file with '.attr' appended to the name.
736 *) X509 verify fixes. Disable broken certificate workarounds when
737 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
738 keyUsage extension present. Don't accept CRLs with unhandled critical
739 extensions: since verify currently doesn't process CRL extensions this
740 rejects a CRL with *any* critical extensions. Add new verify error codes
744 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
745 A clarification of RFC2560 will require the use of OCTET STRINGs and
746 some implementations cannot handle the current raw format. Since OpenSSL
747 copies and compares OCSP nonces as opaque blobs without any attempt at
748 parsing them this should not create any compatibility issues.
751 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
752 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
753 this HMAC (and other) operations are several times slower than OpenSSL
757 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
758 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
760 *) Use the correct content when signing type "other".
763 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
765 *) Fix various bugs revealed by running the NISCC test suite:
767 Stop out of bounds reads in the ASN1 code when presented with
768 invalid tags (CAN-2003-0543 and CAN-2003-0544).
770 Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
772 If verify callback ignores invalid public key errors don't try to check
773 certificate signature with the NULL public key.
777 *) New -ignore_err option in ocsp application to stop the server
778 exiting on the first error in a request.
781 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
782 if the server requested one: as stated in TLS 1.0 and SSL 3.0
786 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
787 extra data after the compression methods not only for TLS 1.0
788 but also for SSL 3.0 (as required by the specification).
789 [Bodo Moeller; problem pointed out by Matthias Loepfe]
791 *) Change X509_certificate_type() to mark the key as exported/exportable
792 when it's 512 *bits* long, not 512 bytes.
795 *) Change AES_cbc_encrypt() so it outputs exact multiple of
796 blocks during encryption.
799 *) Various fixes to base64 BIO and non blocking I/O. On write
800 flushes were not handled properly if the BIO retried. On read
801 data was not being buffered properly and had various logic bugs.
802 This also affects blocking I/O when the data being decoded is a
806 *) Various S/MIME bugfixes and compatibility changes:
807 output correct application/pkcs7 MIME type if
808 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
809 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
810 of files as .eml work). Correctly handle very long lines in MIME
814 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
816 *) Countermeasure against the Klima-Pokorny-Rosa extension of
817 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
818 a protocol version number mismatch like a decryption error
819 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
822 *) Turn on RSA blinding by default in the default implementation
823 to avoid a timing attack. Applications that don't want it can call
824 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
825 They would be ill-advised to do so in most cases.
826 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
828 *) Change RSA blinding code so that it works when the PRNG is not
829 seeded (in this case, the secret RSA exponent is abused as
830 an unpredictable seed -- if it is not unpredictable, there
831 is no point in blinding anyway). Make RSA blinding thread-safe
832 by remembering the creator's thread ID in rsa->blinding and
833 having all other threads use local one-time blinding factors
834 (this requires more computation than sharing rsa->blinding, but
835 avoids excessive locking; and if an RSA object is not shared
836 between threads, blinding will still be very fast).
839 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
840 ENGINE as defaults for all supported algorithms irrespective of
841 the 'flags' parameter. 'flags' is now honoured, so applications
842 should make sure they are passing it correctly.
845 *) Target "mingw" now allows native Windows code to be generated in
846 the Cygwin environment as well as with the MinGW compiler.
849 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
851 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
852 via timing by performing a MAC computation even if incorrrect
853 block cipher padding has been found. This is a countermeasure
854 against active attacks where the attacker has to distinguish
855 between bad padding and a MAC verification error. (CAN-2003-0078)
857 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
858 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
859 Martin Vuagnoux (EPFL, Ilion)]
861 *) Make the no-err option work as intended. The intention with no-err
862 is not to have the whole error stack handling routines removed from
863 libcrypto, it's only intended to remove all the function name and
864 reason texts, thereby removing some of the footprint that may not
865 be interesting if those errors aren't displayed anyway.
867 NOTE: it's still possible for any application or module to have it's
868 own set of error texts inserted. The routines are there, just not
869 used by default when no-err is given.
872 *) Add support for FreeBSD on IA64.
873 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
875 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
876 Kerberos function mit_des_cbc_cksum(). Before this change,
877 the value returned by DES_cbc_cksum() was like the one from
878 mit_des_cbc_cksum(), except the bytes were swapped.
879 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
881 *) Allow an application to disable the automatic SSL chain building.
882 Before this a rather primitive chain build was always performed in
883 ssl3_output_cert_chain(): an application had no way to send the
884 correct chain if the automatic operation produced an incorrect result.
886 Now the chain builder is disabled if either:
888 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
890 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
892 The reasoning behind this is that an application would not want the
893 auto chain building to take place if extra chain certificates are
894 present and it might also want a means of sending no additional
895 certificates (for example the chain has two certificates and the
899 *) Add the possibility to build without the ENGINE framework.
900 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
902 *) Under Win32 gmtime() can return NULL: check return value in
903 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
906 *) DSA routines: under certain error conditions uninitialized BN objects
907 could be freed. Solution: make sure initialization is performed early
908 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
909 Nils Larsch <nla@trustcenter.de> via PR#459)
912 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
913 checked on reconnect on the client side, therefore session resumption
914 could still fail with a "ssl session id is different" error. This
915 behaviour is masked when SSL_OP_ALL is used due to
916 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
917 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
921 *) IA-32 assembler support enhancements: unified ELF targets, support
922 for SCO/Caldera platforms, fix for Cygwin shared build.
925 *) Add support for FreeBSD on sparc64. As a consequence, support for
926 FreeBSD on non-x86 processors is separate from x86 processors on
927 the config script, much like the NetBSD support.
928 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
930 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
932 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
935 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
936 code (06) was taken as the first octet of the session ID and the last
937 octet was ignored consequently. As a result SSLv2 client side session
938 caching could not have worked due to the session ID mismatch between
940 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
944 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
945 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
949 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
950 seems that in spite of existing for more than a year, many application
951 author have done nothing to provide the necessary callbacks, which
952 means that this particular engine will not work properly anywhere.
953 This is a very unfortunate situation which forces us, in the name
954 of usability, to give the hw_ncipher.c a static lock, which is part
956 NOTE: This is for the 0.9.7 series ONLY. This hack will never
957 appear in 0.9.8 or later. We EXPECT application authors to have
958 dealt properly with this when 0.9.8 is released (unless we actually
959 make such changes in the libcrypto locking code that changes will
960 have to be made anyway).
963 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
964 octets have been read, EOF or an error occurs. Without this change
965 some truncated ASN1 structures will not produce an error.
968 *) Disable Heimdal support, since it hasn't been fully implemented.
969 Still give the possibility to force the use of Heimdal, but with
970 warnings and a request that patches get sent to openssl-dev.
973 *) Add the VC-CE target, introduce the WINCE sysname, and add
974 INSTALL.WCE and appropriate conditionals to make it build.
975 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
977 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
978 cygssl-x.y.z.dll, where x, y and z are the major, minor and
979 edit numbers of the version.
980 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
982 *) Introduce safe string copy and catenation functions
983 (BUF_strlcpy() and BUF_strlcat()).
984 [Ben Laurie (CHATS) and Richard Levitte]
986 *) Avoid using fixed-size buffers for one-line DNs.
989 *) Add BUF_MEM_grow_clean() to avoid information leakage when
990 resizing buffers containing secrets, and use where appropriate.
993 *) Avoid using fixed size buffers for configuration file location.
996 *) Avoid filename truncation for various CA files.
999 *) Use sizeof in preference to magic numbers.
1000 [Ben Laurie (CHATS)]
1002 *) Avoid filename truncation in cert requests.
1003 [Ben Laurie (CHATS)]
1005 *) Add assertions to check for (supposedly impossible) buffer
1007 [Ben Laurie (CHATS)]
1009 *) Don't cache truncated DNS entries in the local cache (this could
1010 potentially lead to a spoofing attack).
1011 [Ben Laurie (CHATS)]
1013 *) Fix various buffers to be large enough for hex/decimal
1014 representations in a platform independent manner.
1015 [Ben Laurie (CHATS)]
1017 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1018 resizing buffers containing secrets, and use where appropriate.
1019 [Ben Laurie (CHATS)]
1021 *) Add BIO_indent() to avoid much slightly worrying code to do
1023 [Ben Laurie (CHATS)]
1025 *) Convert sprintf()/BIO_puts() to BIO_printf().
1026 [Ben Laurie (CHATS)]
1028 *) buffer_gets() could terminate with the buffer only half
1030 [Ben Laurie (CHATS)]
1032 *) Add assertions to prevent user-supplied crypto functions from
1033 overflowing internal buffers by having large block sizes, etc.
1034 [Ben Laurie (CHATS)]
1036 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1038 [Ben Laurie (CHATS)]
1040 *) Eliminate unused copy of key in RC4.
1041 [Ben Laurie (CHATS)]
1043 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1044 [Ben Laurie (CHATS)]
1046 *) Fix off-by-one error in EGD path.
1047 [Ben Laurie (CHATS)]
1049 *) If RANDFILE path is too long, ignore instead of truncating.
1050 [Ben Laurie (CHATS)]
1052 *) Eliminate unused and incorrectly sized X.509 structure
1054 [Ben Laurie (CHATS)]
1056 *) Eliminate unused and dangerous function knumber().
1057 [Ben Laurie (CHATS)]
1059 *) Eliminate unused and dangerous structure, KSSL_ERR.
1060 [Ben Laurie (CHATS)]
1062 *) Protect against overlong session ID context length in an encoded
1063 session object. Since these are local, this does not appear to be
1065 [Ben Laurie (CHATS)]
1067 *) Change from security patch (see 0.9.6e below) that did not affect
1068 the 0.9.6 release series:
1070 Remote buffer overflow in SSL3 protocol - an attacker could
1071 supply an oversized master key in Kerberos-enabled versions.
1073 [Ben Laurie (CHATS)]
1075 *) Change the SSL kerb5 codes to match RFC 2712.
1078 *) Make -nameopt work fully for req and add -reqopt switch.
1079 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1081 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1082 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1084 *) Make sure tests can be performed even if the corresponding algorithms
1085 have been removed entirely. This was also the last step to make
1086 OpenSSL compilable with DJGPP under all reasonable conditions.
1087 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1089 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1090 to allow version independent disabling of normally unselected ciphers,
1091 which may be activated as a side-effect of selecting a single cipher.
1093 (E.g., cipher list string "RSA" enables ciphersuites that are left
1094 out of "ALL" because they do not provide symmetric encryption.
1095 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1096 [Lutz Jaenicke, Bodo Moeller]
1098 *) Add appropriate support for separate platform-dependent build
1099 directories. The recommended way to make a platform-dependent
1100 build directory is the following (tested on Linux), maybe with
1103 # Place yourself outside of the OpenSSL source tree. In
1104 # this example, the environment variable OPENSSL_SOURCE
1105 # is assumed to contain the absolute OpenSSL source directory.
1106 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1107 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1108 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1109 mkdir -p `dirname $F`
1110 ln -s $OPENSSL_SOURCE/$F $F
1113 To be absolutely sure not to disturb the source tree, a "make clean"
1114 is a good thing. If it isn't successfull, don't worry about it,
1115 it probably means the source directory is very clean.
1118 *) Make sure any ENGINE control commands make local copies of string
1119 pointers passed to them whenever necessary. Otherwise it is possible
1120 the caller may have overwritten (or deallocated) the original string
1121 data when a later ENGINE operation tries to use the stored values.
1122 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1124 *) Improve diagnostics in file reading and command-line digests.
1125 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1127 *) Add AES modes CFB and OFB to the object database. Correct an
1128 error in AES-CFB decryption.
1131 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1132 allows existing EVP_CIPHER_CTX structures to be reused after
1133 calling EVP_*Final(). This behaviour is used by encryption
1134 BIOs and some applications. This has the side effect that
1135 applications must explicitly clean up cipher contexts with
1136 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1139 *) Check the values of dna and dnb in bn_mul_recursive before calling
1140 bn_mul_comba (a non zero value means the a or b arrays do not contain
1141 n2 elements) and fallback to bn_mul_normal if either is not zero.
1144 *) Fix escaping of non-ASCII characters when using the -subj option
1145 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1148 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1149 form for "surname", serialNumber has no short form.
1150 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1151 therefore remove "mail" short name for "internet 7".
1152 The OID for unique identifiers in X509 certificates is
1153 x500UniqueIdentifier, not uniqueIdentifier.
1154 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1157 *) Add an "init" command to the ENGINE config module and auto initialize
1158 ENGINEs. Without any "init" command the ENGINE will be initialized
1159 after all ctrl commands have been executed on it. If init=1 the
1160 ENGINE is initailized at that point (ctrls before that point are run
1161 on the uninitialized ENGINE and after on the initialized one). If
1162 init=0 then the ENGINE will not be iniatialized at all.
1165 *) Fix the 'app_verify_callback' interface so that the user-defined
1166 argument is actually passed to the callback: In the
1167 SSL_CTX_set_cert_verify_callback() prototype, the callback
1168 declaration has been changed from
1171 int (*cb)(X509_STORE_CTX *,void *);
1172 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1173 i=s->ctx->app_verify_callback(&ctx)
1174 has been changed into
1175 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1177 To update applications using SSL_CTX_set_cert_verify_callback(),
1178 a dummy argument can be added to their callback functions.
1179 [D. K. Smetters <smetters@parc.xerox.com>]
1181 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1182 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1184 *) Add and OPENSSL_LOAD_CONF define which will cause
1185 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1186 This allows older applications to transparently support certain
1187 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1188 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1189 load the config file and OPENSSL_add_all_algorithms_conf() which will
1190 always load it have also been added.
1193 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1194 Adjust NIDs and EVP layer.
1195 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1197 *) Config modules support in openssl utility.
1199 Most commands now load modules from the config file,
1200 though in a few (such as version) this isn't done
1201 because it couldn't be used for anything.
1203 In the case of ca and req the config file used is
1204 the same as the utility itself: that is the -config
1205 command line option can be used to specify an
1209 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1210 use "openssl_conf" if filename is NULL use default openssl config file.
1213 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1214 config section name. Add a new flag to tolerate a missing config file
1215 and move code to CONF_modules_load_file().
1218 *) Support for crypto accelerator cards from Accelerated Encryption
1219 Processing, www.aep.ie. (Use engine 'aep')
1220 The support was copied from 0.9.6c [engine] and adapted/corrected
1221 to work with the new engine framework.
1222 [AEP Inc. and Richard Levitte]
1224 *) Support for SureWare crypto accelerator cards from Baltimore
1225 Technologies. (Use engine 'sureware')
1226 The support was copied from 0.9.6c [engine] and adapted
1227 to work with the new engine framework.
1230 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1231 make the newer ENGINE framework commands for the CHIL engine work.
1232 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1234 *) Make it possible to produce shared libraries on ReliantUNIX.
1235 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1237 *) Add the configuration target debug-linux-ppro.
1238 Make 'openssl rsa' use the general key loading routines
1239 implemented in apps.c, and make those routines able to
1240 handle the key format FORMAT_NETSCAPE and the variant
1242 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1244 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1245 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1247 *) Add -keyform to rsautl, and document -engine.
1248 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1250 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1251 BIO_R_NO_SUCH_FILE error code rather than the generic
1252 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1255 *) Add new functions
1257 ERR_peek_last_error_line
1258 ERR_peek_last_error_line_data.
1259 These are similar to
1262 ERR_peek_error_line_data,
1263 but report on the latest error recorded rather than the first one
1264 still in the error queue.
1265 [Ben Laurie, Bodo Moeller]
1267 *) default_algorithms option in ENGINE config module. This allows things
1269 default_algorithms = ALL
1270 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1273 *) Prelminary ENGINE config module.
1276 *) New experimental application configuration code.
1279 *) Change the AES code to follow the same name structure as all other
1280 symmetric ciphers, and behave the same way. Move everything to
1281 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1282 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1284 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1285 [Ben Laurie and Theo de Raadt]
1287 *) Add option to output public keys in req command.
1288 [Massimiliano Pala madwolf@openca.org]
1290 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1291 (up to about 10% better than before for P-192 and P-224).
1294 *) New functions/macros
1296 SSL_CTX_set_msg_callback(ctx, cb)
1297 SSL_CTX_set_msg_callback_arg(ctx, arg)
1298 SSL_set_msg_callback(ssl, cb)
1299 SSL_set_msg_callback_arg(ssl, arg)
1301 to request calling a callback function
1303 void cb(int write_p, int version, int content_type,
1304 const void *buf, size_t len, SSL *ssl, void *arg)
1306 whenever a protocol message has been completely received
1307 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1308 protocol version according to which the SSL library interprets
1309 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1310 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1311 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1312 specification (change_cipher_spec(20), alert(21), handshake(22)).
1313 'buf' and 'len' point to the actual message, 'ssl' to the
1314 SSL object, and 'arg' is the application-defined value set by
1315 SSL[_CTX]_set_msg_callback_arg().
1317 'openssl s_client' and 'openssl s_server' have new '-msg' options
1318 to enable a callback that displays all protocol messages.
1321 *) Change the shared library support so shared libraries are built as
1322 soon as the corresponding static library is finished, and thereby get
1323 openssl and the test programs linked against the shared library.
1324 This still only happens when the keyword "shard" has been given to
1325 the configuration scripts.
1327 NOTE: shared library support is still an experimental thing, and
1328 backward binary compatibility is still not guaranteed.
1329 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1331 *) Add support for Subject Information Access extension.
1332 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1334 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1335 additional bytes when new memory had to be allocated, not just
1336 when reusing an existing buffer.
1339 *) New command line and configuration option 'utf8' for the req command.
1340 This allows field values to be specified as UTF8 strings.
1343 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1344 runs for the former and machine-readable output for the latter.
1347 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1348 of the e-mail address in the DN (i.e., it will go into a certificate
1349 extension only). The new configuration file option 'email_in_dn = no'
1350 has the same effect.
1351 [Massimiliano Pala madwolf@openca.org]
1353 *) Change all functions with names starting with des_ to be starting
1354 with DES_ instead. Add wrappers that are compatible with libdes,
1355 but are named _ossl_old_des_*. Finally, add macros that map the
1356 des_* symbols to the corresponding _ossl_old_des_* if libdes
1357 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1358 desired, the des_* symbols will be mapped to DES_*, with one
1361 Since we provide two compatibility mappings, the user needs to
1362 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1363 compatibility is desired. The default (i.e., when that macro
1364 isn't defined) is OpenSSL 0.9.6c compatibility.
1366 There are also macros that enable and disable the support of old
1367 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1368 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1369 are defined, the default will apply: to support the old des routines.
1371 In either case, one must include openssl/des.h to get the correct
1372 definitions. Do not try to just include openssl/des_old.h, that
1375 NOTE: This is a major break of an old API into a new one. Software
1376 authors are encouraged to switch to the DES_ style functions. Some
1377 time in the future, des_old.h and the libdes compatibility functions
1378 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1379 default), and then completely removed.
1382 *) Test for certificates which contain unsupported critical extensions.
1383 If such a certificate is found during a verify operation it is
1384 rejected by default: this behaviour can be overridden by either
1385 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1386 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1387 X509_supported_extension() has also been added which returns 1 if a
1388 particular extension is supported.
1391 *) Modify the behaviour of EVP cipher functions in similar way to digests
1392 to retain compatibility with existing code.
1395 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1396 compatibility with existing code. In particular the 'ctx' parameter does
1397 not have to be to be initialized before the call to EVP_DigestInit() and
1398 it is tidied up after a call to EVP_DigestFinal(). New function
1399 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1400 EVP_MD_CTX_copy() changed to not require the destination to be
1401 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1402 requires the destination to be valid.
1404 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1405 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1408 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1409 so that complete 'Handshake' protocol structures are kept in memory
1410 instead of overwriting 'msg_type' and 'length' with 'body' data.
1413 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1414 [Massimo Santin via Richard Levitte]
1416 *) Major restructuring to the underlying ENGINE code. This includes
1417 reduction of linker bloat, separation of pure "ENGINE" manipulation
1418 (initialisation, etc) from functionality dealing with implementations
1419 of specific crypto iterfaces. This change also introduces integrated
1420 support for symmetric ciphers and digest implementations - so ENGINEs
1421 can now accelerate these by providing EVP_CIPHER and EVP_MD
1422 implementations of their own. This is detailed in crypto/engine/README
1423 as it couldn't be adequately described here. However, there are a few
1424 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1425 were changed in the original introduction of ENGINE code have now
1426 reverted back - the hooking from this code to ENGINE is now a good
1427 deal more passive and at run-time, operations deal directly with
1428 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1429 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1430 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1431 they were not being used by the framework as there is no concept of a
1432 BIGNUM_METHOD and they could not be generalised to the new
1433 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1434 ENGINE_cpy() has been removed as it cannot be consistently defined in
1438 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1441 *) Change mkdef.pl to sort symbols that get the same entry number,
1442 and make sure the automatically generated functions ERR_load_*
1443 become part of libeay.num as well.
1446 *) New function SSL_renegotiate_pending(). This returns true once
1447 renegotiation has been requested (either SSL_renegotiate() call
1448 or HelloRequest/ClientHello receveived from the peer) and becomes
1449 false once a handshake has been completed.
1450 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1451 sends a HelloRequest, but does not ensure that a handshake takes
1452 place. SSL_renegotiate_pending() is useful for checking if the
1453 client has followed the request.)
1456 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1457 By default, clients may request session resumption even during
1458 renegotiation (if session ID contexts permit); with this option,
1459 session resumption is possible only in the first handshake.
1461 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1462 more bits available for options that should not be part of
1463 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1466 *) Add some demos for certificate and certificate request creation.
1469 *) Make maximum certificate chain size accepted from the peer application
1470 settable (SSL*_get/set_max_cert_list()), as proposed by
1471 "Douglas E. Engert" <deengert@anl.gov>.
1474 *) Add support for shared libraries for Unixware-7
1475 (Boyd Lynn Gerber <gerberb@zenez.com>).
1478 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1479 be done prior to destruction. Use this to unload error strings from
1480 ENGINEs that load their own error strings. NB: This adds two new API
1481 functions to "get" and "set" this destroy handler in an ENGINE.
1484 *) Alter all existing ENGINE implementations (except "openssl" and
1485 "openbsd") to dynamically instantiate their own error strings. This
1486 makes them more flexible to be built both as statically-linked ENGINEs
1487 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1488 Also, add stub code to each that makes building them as self-contained
1489 shared-libraries easier (see README.ENGINE).
1492 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1493 implementations into applications that are completely implemented in
1494 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1495 commands that can be used to configure what shared-library to load and
1496 to control aspects of the way it is handled. Also, made an update to
1497 the README.ENGINE file that brings its information up-to-date and
1498 provides some information and instructions on the "dynamic" ENGINE
1499 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1502 *) Make it possible to unload ranges of ERR strings with a new
1503 "ERR_unload_strings" function.
1506 *) Add a copy() function to EVP_MD.
1509 *) Make EVP_MD routines take a context pointer instead of just the
1510 md_data void pointer.
1513 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1514 that the digest can only process a single chunk of data
1515 (typically because it is provided by a piece of
1516 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1517 is only going to provide a single chunk of data, and hence the
1518 framework needn't accumulate the data for oneshot drivers.
1521 *) As with "ERR", make it possible to replace the underlying "ex_data"
1522 functions. This change also alters the storage and management of global
1523 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1524 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1525 index counters. The API functions that use this state have been changed
1526 to take a "class_index" rather than pointers to the class's local STACK
1527 and counter, and there is now an API function to dynamically create new
1528 classes. This centralisation allows us to (a) plug a lot of the
1529 thread-safety problems that existed, and (b) makes it possible to clean
1530 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1531 such data would previously have always leaked in application code and
1532 workarounds were in place to make the memory debugging turn a blind eye
1533 to it. Application code that doesn't use this new function will still
1534 leak as before, but their memory debugging output will announce it now
1535 rather than letting it slide.
1537 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1538 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1539 has a return value to indicate success or failure.
1542 *) Make it possible to replace the underlying "ERR" functions such that the
1543 global state (2 LHASH tables and 2 locks) is only used by the "default"
1544 implementation. This change also adds two functions to "get" and "set"
1545 the implementation prior to it being automatically set the first time
1546 any other ERR function takes place. Ie. an application can call "get",
1547 pass the return value to a module it has just loaded, and that module
1548 can call its own "set" function using that value. This means the
1549 module's "ERR" operations will use (and modify) the error state in the
1550 application and not in its own statically linked copy of OpenSSL code.
1553 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1554 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1555 the operation, and provides a more encapsulated way for external code
1556 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1557 to use these functions rather than manually incrementing the counts.
1559 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1562 *) Add EVP test program.
1565 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1568 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1569 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1570 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1571 These allow a CRL to be built without having to access X509_CRL fields
1572 directly. Modify 'ca' application to use new functions.
1575 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1576 bug workarounds. Rollback attack detection is a security feature.
1577 The problem will only arise on OpenSSL servers when TLSv1 is not
1578 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1579 Software authors not wanting to support TLSv1 will have special reasons
1580 for their choice and can explicitly enable this option.
1581 [Bodo Moeller, Lutz Jaenicke]
1583 *) Rationalise EVP so it can be extended: don't include a union of
1584 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1585 (similar to those existing for EVP_CIPHER_CTX).
1590 EVP_MD_CTX_init(&md); /* new function call */
1591 EVP_DigestInit(&md, EVP_sha1());
1592 EVP_DigestUpdate(&md, in, len);
1593 EVP_DigestFinal(&md, out, NULL);
1594 EVP_MD_CTX_cleanup(&md); /* new function call */
1598 *) Make DES key schedule conform to the usual scheme, as well as
1599 correcting its structure. This means that calls to DES functions
1600 now have to pass a pointer to a des_key_schedule instead of a
1601 plain des_key_schedule (which was actually always a pointer
1604 des_key_schedule ks;
1606 des_set_key_checked(..., &ks);
1607 des_ncbc_encrypt(..., &ks, ...);
1609 (Note that a later change renames 'des_...' into 'DES_...'.)
1612 *) Initial reduction of linker bloat: the use of some functions, such as
1613 PEM causes large amounts of unused functions to be linked in due to
1614 poor organisation. For example pem_all.c contains every PEM function
1615 which has a knock on effect of linking in large amounts of (unused)
1616 ASN1 code. Grouping together similar functions and splitting unrelated
1617 functions prevents this.
1620 *) Cleanup of EVP macros.
1623 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1624 correct _ecb suffix.
1627 *) Add initial OCSP responder support to ocsp application. The
1628 revocation information is handled using the text based index
1629 use by the ca application. The responder can either handle
1630 requests generated internally, supplied in files (for example
1631 via a CGI script) or using an internal minimal server.
1634 *) Add configuration choices to get zlib compression for TLS.
1637 *) Changes to Kerberos SSL for RFC 2712 compliance:
1638 1. Implemented real KerberosWrapper, instead of just using
1639 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1640 2. Implemented optional authenticator field of KerberosWrapper.
1642 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1643 and authenticator structs; see crypto/krb5/.
1645 Generalized Kerberos calls to support multiple Kerberos libraries.
1646 [Vern Staats <staatsvr@asc.hpc.mil>,
1647 Jeffrey Altman <jaltman@columbia.edu>
1648 via Richard Levitte]
1650 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1651 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1652 values for each of the key sizes rather than having just
1653 parameters (and 'speed' generating keys each time).
1656 *) Speed up EVP routines.
1659 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1660 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1661 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1662 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1664 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1665 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1666 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1669 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1671 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1674 *) Added the OS2-EMX target.
1675 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1677 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1678 to support NCONF routines in extension code. New function CONF_set_nconf()
1679 to allow functions which take an NCONF to also handle the old LHASH
1680 structure: this means that the old CONF compatible routines can be
1681 retained (in particular wrt extensions) without having to duplicate the
1682 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1685 *) Enhance the general user interface with mechanisms for inner control
1686 and with possibilities to have yes/no kind of prompts.
1689 *) Change all calls to low level digest routines in the library and
1690 applications to use EVP. Add missing calls to HMAC_cleanup() and
1691 don't assume HMAC_CTX can be copied using memcpy().
1692 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1694 *) Add the possibility to control engines through control names but with
1695 arbitrary arguments instead of just a string.
1696 Change the key loaders to take a UI_METHOD instead of a callback
1697 function pointer. NOTE: this breaks binary compatibility with earlier
1698 versions of OpenSSL [engine].
1699 Adapt the nCipher code for these new conditions and add a card insertion
1703 *) Enhance the general user interface with mechanisms to better support
1704 dialog box interfaces, application-defined prompts, the possibility
1705 to use defaults (for example default passwords from somewhere else)
1706 and interrupts/cancellations.
1709 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1710 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1713 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1714 tidy up some unnecessarily weird code in 'sk_new()').
1715 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1717 *) Change the key loading routines for ENGINEs to use the same kind
1718 callback (pem_password_cb) as all other routines that need this
1722 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1723 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1724 than this minimum value is recommended.
1727 *) New random seeder for OpenVMS, using the system process statistics
1728 that are easily reachable.
1731 *) Windows apparently can't transparently handle global
1732 variables defined in DLLs. Initialisations such as:
1734 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1736 wont compile. This is used by the any applications that need to
1737 declare their own ASN1 modules. This was fixed by adding the option
1738 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1739 needed for static libraries under Win32.
1742 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1743 setting of purpose and trust fields. New X509_STORE trust and
1744 purpose functions and tidy up setting in other SSL functions.
1747 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1748 structure. These are inherited by X509_STORE_CTX when it is
1749 initialised. This allows various defaults to be set in the
1750 X509_STORE structure (such as flags for CRL checking and custom
1751 purpose or trust settings) for functions which only use X509_STORE_CTX
1752 internally such as S/MIME.
1754 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1755 trust settings if they are not set in X509_STORE. This allows X509_STORE
1756 purposes and trust (in S/MIME for example) to override any set by default.
1758 Add command line options for CRL checking to smime, s_client and s_server
1762 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1763 are set then the CRL is looked up in the X509_STORE structure and
1764 its validity and signature checked, then if the certificate is found
1765 in the CRL the verify fails with a revoked error.
1767 Various new CRL related callbacks added to X509_STORE_CTX structure.
1769 Command line options added to 'verify' application to support this.
1771 This needs some additional work, such as being able to handle multiple
1772 CRLs with different times, extension based lookup (rather than just
1773 by subject name) and ultimately more complete V2 CRL extension
1777 *) Add a general user interface API (crypto/ui/). This is designed
1778 to replace things like des_read_password and friends (backward
1779 compatibility functions using this new API are provided).
1780 The purpose is to remove prompting functions from the DES code
1781 section as well as provide for prompting through dialog boxes in
1782 a window system and the like.
1785 *) Add "ex_data" support to ENGINE so implementations can add state at a
1786 per-structure level rather than having to store it globally.
1789 *) Make it possible for ENGINE structures to be copied when retrieved by
1790 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1791 This causes the "original" ENGINE structure to act like a template,
1792 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1793 operational state can be localised to each ENGINE structure, despite the
1794 fact they all share the same "methods". New ENGINE structures returned in
1795 this case have no functional references and the return value is the single
1796 structural reference. This matches the single structural reference returned
1797 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1801 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1802 needs to match any other type at all we need to manually clear the
1806 *) Changes to the "openssl engine" utility to include;
1807 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1808 about an ENGINE's available control commands.
1809 - executing control commands from command line arguments using the
1810 '-pre' and '-post' switches. '-post' is only used if '-t' is
1811 specified and the ENGINE is successfully initialised. The syntax for
1812 the individual commands are colon-separated, for example;
1813 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1816 *) New dynamic control command support for ENGINEs. ENGINEs can now
1817 declare their own commands (numbers), names (strings), descriptions,
1818 and input types for run-time discovery by calling applications. A
1819 subset of these commands are implicitly classed as "executable"
1820 depending on their input type, and only these can be invoked through
1821 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1822 can be based on user input, config files, etc). The distinction is
1823 that "executable" commands cannot return anything other than a boolean
1824 result and can only support numeric or string input, whereas some
1825 discoverable commands may only be for direct use through
1826 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1827 pointers, or other custom uses. The "executable" commands are to
1828 support parameterisations of ENGINE behaviour that can be
1829 unambiguously defined by ENGINEs and used consistently across any
1830 OpenSSL-based application. Commands have been added to all the
1831 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1832 control over shared-library paths without source code alterations.
1835 *) Changed all ENGINE implementations to dynamically allocate their
1836 ENGINEs rather than declaring them statically. Apart from this being
1837 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1838 this also allows the implementations to compile without using the
1839 internal engine_int.h header.
1842 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
1843 'const' value. Any code that should be able to modify a RAND_METHOD
1844 should already have non-const pointers to it (ie. they should only
1845 modify their own ones).
1848 *) Made a variety of little tweaks to the ENGINE code.
1849 - "atalla" and "ubsec" string definitions were moved from header files
1850 to C code. "nuron" string definitions were placed in variables
1851 rather than hard-coded - allowing parameterisation of these values
1852 later on via ctrl() commands.
1853 - Removed unused "#if 0"'d code.
1854 - Fixed engine list iteration code so it uses ENGINE_free() to release
1855 structural references.
1856 - Constified the RAND_METHOD element of ENGINE structures.
1857 - Constified various get/set functions as appropriate and added
1858 missing functions (including a catch-all ENGINE_cpy that duplicates
1859 all ENGINE values onto a new ENGINE except reference counts/state).
1860 - Removed NULL parameter checks in get/set functions. Setting a method
1861 or function to NULL is a way of cancelling out a previously set
1862 value. Passing a NULL ENGINE parameter is just plain stupid anyway
1863 and doesn't justify the extra error symbols and code.
1864 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
1865 flags from engine_int.h to engine.h.
1866 - Changed prototypes for ENGINE handler functions (init(), finish(),
1867 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
1870 *) Implement binary inversion algorithm for BN_mod_inverse in addition
1871 to the algorithm using long division. The binary algorithm can be
1872 used only if the modulus is odd. On 32-bit systems, it is faster
1873 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
1874 roughly 5-15% for 256-bit moduli), so we use it only for moduli
1875 up to 450 bits. In 64-bit environments, the binary algorithm
1876 appears to be advantageous for much longer moduli; here we use it
1877 for moduli up to 2048 bits.
1880 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
1881 could not support the combine flag in choice fields.
1884 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
1885 extensions from a certificate request to the certificate.
1888 *) Allow multiple 'certopt' and 'nameopt' options to be separated
1889 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
1890 file: this allows the display of the certificate about to be
1891 signed to be customised, to allow certain fields to be included
1892 or excluded and extension details. The old system didn't display
1893 multicharacter strings properly, omitted fields not in the policy
1894 and couldn't display additional details such as extensions.
1897 *) Function EC_POINTs_mul for multiple scalar multiplication
1898 of an arbitrary number of elliptic curve points
1899 \sum scalars[i]*points[i],
1900 optionally including the generator defined for the EC_GROUP:
1901 scalar*generator + \sum scalars[i]*points[i].
1903 EC_POINT_mul is a simple wrapper function for the typical case
1904 that the point list has just one item (besides the optional
1908 *) First EC_METHODs for curves over GF(p):
1910 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
1911 operations and provides various method functions that can also
1912 operate with faster implementations of modular arithmetic.
1914 EC_GFp_mont_method() reuses most functions that are part of
1915 EC_GFp_simple_method, but uses Montgomery arithmetic.
1917 [Bodo Moeller; point addition and point doubling
1918 implementation directly derived from source code provided by
1919 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
1921 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
1922 crypto/ec/ec_lib.c):
1924 Curves are EC_GROUP objects (with an optional group generator)
1925 based on EC_METHODs that are built into the library.
1927 Points are EC_POINT objects based on EC_GROUP objects.
1929 Most of the framework would be able to handle curves over arbitrary
1930 finite fields, but as there are no obvious types for fields other
1931 than GF(p), some functions are limited to that for now.
1934 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
1935 that the file contains a complete HTTP response.
1938 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
1939 change the def and num file printf format specifier from "%-40sXXX"
1940 to "%-39s XXX". The latter will always guarantee a space after the
1941 field while the former will cause them to run together if the field
1942 is 40 of more characters long.
1945 *) Constify the cipher and digest 'method' functions and structures
1946 and modify related functions to take constant EVP_MD and EVP_CIPHER
1950 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
1951 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
1954 *) Modify EVP_Digest*() routines so they now return values. Although the
1955 internal software routines can never fail additional hardware versions
1959 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
1961 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
1962 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
1965 ERR_R_NESTED_ASN1_ERROR
1967 ERR_R_MISSING_ASN1_EOS
1968 were 4 .. 9, conflicting with
1969 ERR_LIB_RSA (= ERR_R_RSA_LIB)
1971 ERR_LIB_PEM (= ERR_R_PEM_LIB).
1972 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
1974 Add new error code 'ERR_R_INTERNAL_ERROR'.
1977 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
1981 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
1982 sets the subject name for a new request or supersedes the
1983 subject name in a given request. Formats that can be parsed are
1984 'CN=Some Name, OU=myOU, C=IT'
1986 'CN=Some Name/OU=myOU/C=IT'.
1988 Add options '-batch' and '-verbose' to 'openssl req'.
1989 [Massimiliano Pala <madwolf@hackmasters.net>]
1991 *) Introduce the possibility to access global variables through
1992 functions on platform were that's the best way to handle exporting
1993 global variables in shared libraries. To enable this functionality,
1994 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
1995 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
1996 is normally done by Configure or something similar).
1998 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
1999 in the source file (foo.c) like this:
2001 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2002 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2004 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2005 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2007 OPENSSL_DECLARE_GLOBAL(int,foo);
2008 #define foo OPENSSL_GLOBAL_REF(foo)
2009 OPENSSL_DECLARE_GLOBAL(double,bar);
2010 #define bar OPENSSL_GLOBAL_REF(bar)
2012 The #defines are very important, and therefore so is including the
2013 header file everywhere where the defined globals are used.
2015 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2016 of ASN.1 items, but that structure is a bit different.
2018 The largest change is in util/mkdef.pl which has been enhanced with
2019 better and easier to understand logic to choose which symbols should
2020 go into the Windows .def files as well as a number of fixes and code
2021 cleanup (among others, algorithm keywords are now sorted
2022 lexicographically to avoid constant rewrites).
2025 *) In BN_div() keep a copy of the sign of 'num' before writing the
2026 result to 'rm' because if rm==num the value will be overwritten
2027 and produce the wrong result if 'num' is negative: this caused
2028 problems with BN_mod() and BN_nnmod().
2031 *) Function OCSP_request_verify(). This checks the signature on an
2032 OCSP request and verifies the signer certificate. The signer
2033 certificate is just checked for a generic purpose and OCSP request
2037 *) Add OCSP_check_validity() function to check the validity of OCSP
2038 responses. OCSP responses are prepared in real time and may only
2039 be a few seconds old. Simply checking that the current time lies
2040 between thisUpdate and nextUpdate max reject otherwise valid responses
2041 caused by either OCSP responder or client clock inaccuracy. Instead
2042 we allow thisUpdate and nextUpdate to fall within a certain period of
2043 the current time. The age of the response can also optionally be
2044 checked. Two new options -validity_period and -status_age added to
2048 *) If signature or public key algorithm is unrecognized print out its
2049 OID rather that just UNKNOWN.
2052 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2053 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2054 ID to be generated from the issuer certificate alone which can then be
2055 passed to OCSP_id_issuer_cmp().
2058 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2059 ASN1 modules to export functions returning ASN1_ITEM pointers
2060 instead of the ASN1_ITEM structures themselves. This adds several
2061 new macros which allow the underlying ASN1 function/structure to
2062 be accessed transparently. As a result code should not use ASN1_ITEM
2063 references directly (such as &X509_it) but instead use the relevant
2064 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2065 use of the new ASN1 code on platforms where exporting structures
2066 is problematical (for example in shared libraries) but exporting
2067 functions returning pointers to structures is not.
2070 *) Add support for overriding the generation of SSL/TLS session IDs.
2071 These callbacks can be registered either in an SSL_CTX or per SSL.
2072 The purpose of this is to allow applications to control, if they wish,
2073 the arbitrary values chosen for use as session IDs, particularly as it
2074 can be useful for session caching in multiple-server environments. A
2075 command-line switch for testing this (and any client code that wishes
2076 to use such a feature) has been added to "s_server".
2077 [Geoff Thorpe, Lutz Jaenicke]
2079 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2080 of the form '#if defined(...) || defined(...) || ...' and
2081 '#if !defined(...) && !defined(...) && ...'. This also avoids
2082 the growing number of special cases it was previously handling.
2085 *) Make all configuration macros available for application by making
2086 sure they are available in opensslconf.h, by giving them names starting
2087 with "OPENSSL_" to avoid conflicts with other packages and by making
2088 sure e_os2.h will cover all platform-specific cases together with
2090 Additionally, it is now possible to define configuration/platform-
2091 specific names (called "system identities"). In the C code, these
2092 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2093 macro with the name beginning with "OPENSSL_SYS_", which is determined
2094 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2098 *) New option -set_serial to 'req' and 'x509' this allows the serial
2099 number to use to be specified on the command line. Previously self
2100 signed certificates were hard coded with serial number 0 and the
2101 CA options of 'x509' had to use a serial number in a file which was
2105 *) New options to 'ca' utility to support V2 CRL entry extensions.
2106 Currently CRL reason, invalidity date and hold instruction are
2107 supported. Add new CRL extensions to V3 code and some new objects.
2110 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2111 disable standard block padding (aka PKCS#5 padding) in the EVP
2112 API, which was previously mandatory. This means that the data is
2113 not padded in any way and so the total length much be a multiple
2114 of the block size, otherwise an error occurs.
2117 *) Initial (incomplete) OCSP SSL support.
2120 *) New function OCSP_parse_url(). This splits up a URL into its host,
2121 port and path components: primarily to parse OCSP URLs. New -url
2122 option to ocsp utility.
2125 *) New nonce behavior. The return value of OCSP_check_nonce() now
2126 reflects the various checks performed. Applications can decide
2127 whether to tolerate certain situations such as an absent nonce
2128 in a response when one was present in a request: the ocsp application
2129 just prints out a warning. New function OCSP_add1_basic_nonce()
2130 this is to allow responders to include a nonce in a response even if
2131 the request is nonce-less.
2134 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2135 skipped when using openssl x509 multiple times on a single input file,
2136 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2139 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2140 set string type: to handle setting ASN1_TIME structures. Fix ca
2141 utility to correctly initialize revocation date of CRLs.
2144 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2145 the clients preferred ciphersuites and rather use its own preferences.
2146 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2147 Internet Explorer by ensuring unchanged hash method during stepup.
2148 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2151 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2152 to aes and add a new 'exist' option to print out symbols that don't
2156 *) Additional options to ocsp utility to allow flags to be set and
2157 additional certificates supplied.
2160 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2161 OCSP client a number of certificate to only verify the response
2165 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2166 handle the new API. Currently only ECB, CBC modes supported. Add new
2169 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2170 Encryption Standard (AES) Ciphersuites for Transport Layer
2171 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2172 not enabled by default and were not part of the "ALL" ciphersuite
2173 alias because they were not yet official; they could be
2174 explicitly requested by specifying the "AESdraft" ciphersuite
2175 group alias. In the final release of OpenSSL 0.9.7, the group
2176 alias is called "AES" and is part of "ALL".)
2177 [Ben Laurie, Steve Henson, Bodo Moeller]
2179 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2180 request to response.
2183 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2184 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2185 extract information from a certificate request. OCSP_response_create()
2186 creates a response and optionally adds a basic response structure.
2187 OCSP_basic_add1_status() adds a complete single response to a basic
2188 response and returns the OCSP_SINGLERESP structure just added (to allow
2189 extensions to be included for example). OCSP_basic_add1_cert() adds a
2190 certificate to a basic response and OCSP_basic_sign() signs a basic
2191 response with various flags. New helper functions ASN1_TIME_check()
2192 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2193 (converts ASN1_TIME to GeneralizedTime).
2196 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2197 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2198 structure from a certificate. X509_pubkey_digest() digests the public_key
2199 contents: this is used in various key identifiers.
2202 *) Make sk_sort() tolerate a NULL argument.
2203 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2205 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2206 passed by the function are trusted implicitly. If any of them signed the
2207 response then it is assumed to be valid and is not verified.
2210 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2211 to data. This was previously part of the PKCS7 ASN1 code. This
2212 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2213 [Steve Henson, reported by Kenneth R. Robinette
2214 <support@securenetterm.com>]
2216 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2217 routines: without these tracing memory leaks is very painful.
2218 Fix leaks in PKCS12 and PKCS7 routines.
2221 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2222 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2223 effectively meant GeneralizedTime would never be used. Now it
2224 is initialised to -1 but X509_time_adj() now has to check the value
2225 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2226 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2227 [Steve Henson, reported by Kenneth R. Robinette
2228 <support@securenetterm.com>]
2230 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2231 result in a zero length in the ASN1_INTEGER structure which was
2232 not consistent with the structure when d2i_ASN1_INTEGER() was used
2233 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2234 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2235 where it did not print out a minus for negative ASN1_INTEGER.
2238 *) Add summary printout to ocsp utility. The various functions which
2239 convert status values to strings have been renamed to:
2240 OCSP_response_status_str(), OCSP_cert_status_str() and
2241 OCSP_crl_reason_str() and are no longer static. New options
2242 to verify nonce values and to disable verification. OCSP response
2243 printout format cleaned up.
2246 *) Add additional OCSP certificate checks. These are those specified
2247 in RFC2560. This consists of two separate checks: the CA of the
2248 certificate being checked must either be the OCSP signer certificate
2249 or the issuer of the OCSP signer certificate. In the latter case the
2250 OCSP signer certificate must contain the OCSP signing extended key
2251 usage. This check is performed by attempting to match the OCSP
2252 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2253 in the OCSP_CERTID structures of the response.
2256 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2257 and related routines. This uses the standard OpenSSL certificate
2258 verify routines to perform initial checks (just CA validity) and
2259 to obtain the certificate chain. Then additional checks will be
2260 performed on the chain. Currently the root CA is checked to see
2261 if it is explicitly trusted for OCSP signing. This is used to set
2262 a root CA as a global signing root: that is any certificate that
2263 chains to that CA is an acceptable OCSP signing certificate.
2266 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2267 extensions from a separate configuration file.
2268 As when reading extensions from the main configuration file,
2269 the '-extensions ...' option may be used for specifying the
2271 [Massimiliano Pala <madwolf@comune.modena.it>]
2273 *) New OCSP utility. Allows OCSP requests to be generated or
2274 read. The request can be sent to a responder and the output
2275 parsed, outputed or printed in text form. Not complete yet:
2276 still needs to check the OCSP response validity.
2279 *) New subcommands for 'openssl ca':
2280 'openssl ca -status <serial>' prints the status of the cert with
2281 the given serial number (according to the index file).
2282 'openssl ca -updatedb' updates the expiry status of certificates
2284 [Massimiliano Pala <madwolf@comune.modena.it>]
2286 *) New '-newreq-nodes' command option to CA.pl. This is like
2287 '-newreq', but calls 'openssl req' with the '-nodes' option
2288 so that the resulting key is not encrypted.
2289 [Damien Miller <djm@mindrot.org>]
2291 *) New configuration for the GNU Hurd.
2292 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2294 *) Initial code to implement OCSP basic response verify. This
2295 is currently incomplete. Currently just finds the signer's
2296 certificate and verifies the signature on the response.
2299 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2300 value of OPENSSLDIR. This is available via the new '-d' option
2301 to 'openssl version', and is also included in 'openssl version -a'.
2304 *) Allowing defining memory allocation callbacks that will be given
2305 file name and line number information in additional arguments
2306 (a const char* and an int). The basic functionality remains, as
2307 well as the original possibility to just replace malloc(),
2308 realloc() and free() by functions that do not know about these
2309 additional arguments. To register and find out the current
2310 settings for extended allocation functions, the following
2311 functions are provided:
2313 CRYPTO_set_mem_ex_functions
2314 CRYPTO_set_locked_mem_ex_functions
2315 CRYPTO_get_mem_ex_functions
2316 CRYPTO_get_locked_mem_ex_functions
2318 These work the same way as CRYPTO_set_mem_functions and friends.
2319 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2320 extended allocation function is enabled.
2321 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2322 a conventional allocation function is enabled.
2323 [Richard Levitte, Bodo Moeller]
2325 *) Finish off removing the remaining LHASH function pointer casts.
2326 There should no longer be any prototype-casting required when using
2327 the LHASH abstraction, and any casts that remain are "bugs". See
2328 the callback types and macros at the head of lhash.h for details
2329 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2332 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2333 If /dev/[u]random devices are not available or do not return enough
2334 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2336 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2337 /etc/entropy will be queried once each in this sequence, quering stops
2338 when enough entropy was collected without querying more sockets.
2341 *) Change the Unix RAND_poll() variant to be able to poll several
2342 random devices, as specified by DEVRANDOM, until a sufficient amount
2343 of data has been collected. We spend at most 10 ms on each file
2344 (select timeout) and read in non-blocking mode. DEVRANDOM now
2345 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2346 (previously it was just the string "/dev/urandom"), so on typical
2347 platforms the 10 ms delay will never occur.
2348 Also separate out the Unix variant to its own file, rand_unix.c.
2349 For VMS, there's a currently-empty rand_vms.c.
2352 *) Move OCSP client related routines to ocsp_cl.c. These
2353 provide utility functions which an application needing
2354 to issue a request to an OCSP responder and analyse the
2355 response will typically need: as opposed to those which an
2356 OCSP responder itself would need which will be added later.
2358 OCSP_request_sign() signs an OCSP request with an API similar
2359 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2360 response. OCSP_response_get1_basic() extracts basic response
2361 from response. OCSP_resp_find_status(): finds and extracts status
2362 information from an OCSP_CERTID structure (which will be created
2363 when the request structure is built). These are built from lower
2364 level functions which work on OCSP_SINGLERESP structures but
2365 wont normally be used unless the application wishes to examine
2366 extensions in the OCSP response for example.
2368 Replace nonce routines with a pair of functions.
2369 OCSP_request_add1_nonce() adds a nonce value and optionally
2370 generates a random value. OCSP_check_nonce() checks the
2371 validity of the nonce in an OCSP response.
2374 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2375 This doesn't copy the supplied OCSP_CERTID and avoids the
2376 need to free up the newly created id. Change return type
2377 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2378 This can then be used to add extensions to the request.
2379 Deleted OCSP_request_new(), since most of its functionality
2380 is now in OCSP_REQUEST_new() (and the case insensitive name
2381 clash) apart from the ability to set the request name which
2382 will be added elsewhere.
2385 *) Update OCSP API. Remove obsolete extensions argument from
2386 various functions. Extensions are now handled using the new
2387 OCSP extension code. New simple OCSP HTTP function which
2388 can be used to send requests and parse the response.
2391 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2392 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2393 uses the special reorder version of SET OF to sort the attributes
2394 and reorder them to match the encoded order. This resolves a long
2395 standing problem: a verify on a PKCS7 structure just after signing
2396 it used to fail because the attribute order did not match the
2397 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2398 it uses the received order. This is necessary to tolerate some broken
2399 software that does not order SET OF. This is handled by encoding
2400 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2401 to produce the required SET OF.
2404 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2405 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2406 files to get correct declarations of the ASN.1 item variables.
2409 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2410 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2411 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2412 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2413 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2414 ASN1_ITEM and no wrapper functions.
2417 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2418 replace the old function pointer based I/O routines. Change most of
2419 the *_d2i_bio() and *_d2i_fp() functions to use these.
2422 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2423 lines, recognice more "algorithms" that can be deselected, and make
2424 it complain about algorithm deselection that isn't recognised.
2427 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2428 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2429 to use new functions. Add NO_ASN1_OLD which can be set to remove
2430 some old style ASN1 functions: this can be used to determine if old
2431 code will still work when these eventually go away.
2434 *) New extension functions for OCSP structures, these follow the
2435 same conventions as certificates and CRLs.
2438 *) New function X509V3_add1_i2d(). This automatically encodes and
2439 adds an extension. Its behaviour can be customised with various
2440 flags to append, replace or delete. Various wrappers added for
2441 certifcates and CRLs.
2444 *) Fix to avoid calling the underlying ASN1 print routine when
2445 an extension cannot be parsed. Correct a typo in the
2446 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2449 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2450 entries for variables.
2453 *) Add functionality to apps/openssl.c for detecting locking
2454 problems: As the program is single-threaded, all we have
2455 to do is register a locking callback using an array for
2456 storing which locks are currently held by the program.
2459 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2460 SSL_get_ex_data_X509_STORE_idx(), which is used in
2461 ssl_verify_cert_chain() and thus can be called at any time
2462 during TLS/SSL handshakes so that thread-safety is essential.
2463 Unfortunately, the ex_data design is not at all suited
2464 for multi-threaded use, so it probably should be abolished.
2467 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2468 [Broadcom, tweaked and integrated by Geoff Thorpe]
2470 *) Move common extension printing code to new function
2471 X509V3_print_extensions(). Reorganise OCSP print routines and
2472 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2475 *) New function X509_signature_print() to remove duplication in some
2479 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2480 set (this was treated exactly the same as SET OF previously). This
2481 is used to reorder the STACK representing the structure to match the
2482 encoding. This will be used to get round a problem where a PKCS7
2483 structure which was signed could not be verified because the STACK
2484 order did not reflect the encoded order.
2487 *) Reimplement the OCSP ASN1 module using the new code.
2490 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2491 for its ASN1 operations. The old style function pointers still exist
2492 for now but they will eventually go away.
2495 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2496 completely replaces the old ASN1 functionality with a table driven
2497 encoder and decoder which interprets an ASN1_ITEM structure describing
2498 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2499 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2500 has also been converted to the new form.
2503 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2504 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2505 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2506 for negative moduli.
2509 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2510 of not touching the result's sign bit.
2513 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2517 *) Changed the LHASH code to use prototypes for callbacks, and created
2518 macros to declare and implement thin (optionally static) functions
2519 that provide type-safety and avoid function pointer casting for the
2520 type-specific callbacks.
2523 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2525 [Veers Staats <staatsvr@asc.hpc.mil>,
2526 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2528 *) Reformat the FAQ so the different questions and answers can be divided
2529 in sections depending on the subject.
2532 *) Have the zlib compression code load ZLIB.DLL dynamically under
2536 *) New function BN_mod_sqrt for computing square roots modulo a prime
2537 (using the probabilistic Tonelli-Shanks algorithm unless
2538 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2539 be handled deterministically).
2540 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2542 *) Make BN_mod_inverse faster by explicitly handling small quotients
2543 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2544 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2547 *) New function BN_kronecker.
2550 *) Fix BN_gcd so that it works on negative inputs; the result is
2551 positive unless both parameters are zero.
2552 Previously something reasonably close to an infinite loop was
2553 possible because numbers could be growing instead of shrinking
2554 in the implementation of Euclid's algorithm.
2557 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2558 sign of the number in question.
2560 Fix BN_is_word(a,w) to work correctly for w == 0.
2562 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2563 because its test if the absolute value of 'a' equals 'w'.
2564 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2565 it exists mostly for use in the implementations of BN_is_zero(),
2566 BN_is_one(), and BN_is_word().
2569 *) New function BN_swap.
2572 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2573 the exponentiation functions are more likely to produce reasonable
2574 results on negative inputs.
2577 *) Change BN_mod_mul so that the result is always non-negative.
2578 Previously, it could be negative if one of the factors was negative;
2579 I don't think anyone really wanted that behaviour.
2582 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2583 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2584 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2585 and add new functions:
2594 BN_mod_lshift1_quick
2598 These functions always generate non-negative results.
2600 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2601 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2603 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2604 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2605 be reduced modulo m.
2606 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2609 The following entry accidentily appeared in the CHANGES file
2610 distributed with OpenSSL 0.9.7. The modifications described in
2611 it do *not* apply to OpenSSL 0.9.7.
2613 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2614 was actually never needed) and in BN_mul(). The removal in BN_mul()
2615 required a small change in bn_mul_part_recursive() and the addition
2616 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2617 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2618 bn_sub_words() and bn_add_words() except they take arrays with
2623 *) In 'openssl passwd', verify passwords read from the terminal
2624 unless the '-salt' option is used (which usually means that
2625 verification would just waste user's time since the resulting
2626 hash is going to be compared with some given password hash)
2627 or the new '-noverify' option is used.
2629 This is an incompatible change, but it does not affect
2630 non-interactive use of 'openssl passwd' (passwords on the command
2631 line, '-stdin' option, '-in ...' option) and thus should not
2635 *) Remove all references to RSAref, since there's no more need for it.
2638 *) Make DSO load along a path given through an environment variable
2639 (SHLIB_PATH) with shl_load().
2642 *) Constify the ENGINE code as a result of BIGNUM constification.
2643 Also constify the RSA code and most things related to it. In a
2644 few places, most notable in the depth of the ASN.1 code, ugly
2645 casts back to non-const were required (to be solved at a later
2649 *) Make it so the openssl application has all engines loaded by default.
2652 *) Constify the BIGNUM routines a little more.
2655 *) Add the following functions:
2657 ENGINE_load_cswift()
2659 ENGINE_load_atalla()
2661 ENGINE_load_builtin_engines()
2663 That way, an application can itself choose if external engines that
2664 are built-in in OpenSSL shall ever be used or not. The benefit is
2665 that applications won't have to be linked with libdl or other dso
2666 libraries unless it's really needed.
2668 Changed 'openssl engine' to load all engines on demand.
2669 Changed the engine header files to avoid the duplication of some
2670 declarations (they differed!).
2673 *) 'openssl engine' can now list capabilities.
2676 *) Better error reporting in 'openssl engine'.
2679 *) Never call load_dh_param(NULL) in s_server.
2682 *) Add engine application. It can currently list engines by name and
2683 identity, and test if they are actually available.
2686 *) Improve RPM specification file by forcing symbolic linking and making
2687 sure the installed documentation is also owned by root.root.
2688 [Damien Miller <djm@mindrot.org>]
2690 *) Give the OpenSSL applications more possibilities to make use of
2691 keys (public as well as private) handled by engines.
2694 *) Add OCSP code that comes from CertCo.
2697 *) Add VMS support for the Rijndael code.
2700 *) Added untested support for Nuron crypto accelerator.
2703 *) Add support for external cryptographic devices. This code was
2704 previously distributed separately as the "engine" branch.
2705 [Geoff Thorpe, Richard Levitte]
2707 *) Rework the filename-translation in the DSO code. It is now possible to
2708 have far greater control over how a "name" is turned into a filename
2709 depending on the operating environment and any oddities about the
2710 different shared library filenames on each system.
2713 *) Support threads on FreeBSD-elf in Configure.
2716 *) Fix for SHA1 assembly problem with MASM: it produces
2717 warnings about corrupt line number information when assembling
2718 with debugging information. This is caused by the overlapping
2720 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2723 NCONF_get_number() has no error checking at all. As a replacement,
2724 NCONF_get_number_e() is defined (_e for "error checking") and is
2725 promoted strongly. The old NCONF_get_number is kept around for
2726 binary backward compatibility.
2727 Make it possible for methods to load from something other than a BIO,
2728 by providing a function pointer that is given a name instead of a BIO.
2729 For example, this could be used to load configuration data from an
2733 *) Fix for non blocking accept BIOs. Added new I/O special reason
2734 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2735 with non blocking I/O was not possible because no retry code was
2736 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2740 *) Added the beginnings of Rijndael support.
2743 *) Fix for bug in DirectoryString mask setting. Add support for
2744 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2745 to allow certificate printing to more controllable, additional
2746 'certopt' option to 'x509' to allow new printing options to be
2750 *) Clean old EAY MD5 hack from e_os.h.
2753 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
2755 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2756 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
2757 [Joe Orton, Steve Henson]
2759 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
2761 *) Fix additional bug revealed by the NISCC test suite:
2763 Stop bug triggering large recursion when presented with
2764 certain ASN.1 tags (CAN-2003-0851)
2767 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
2769 *) Fix various bugs revealed by running the NISCC test suite:
2771 Stop out of bounds reads in the ASN1 code when presented with
2772 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2774 If verify callback ignores invalid public key errors don't try to check
2775 certificate signature with the NULL public key.
2779 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2780 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2784 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2785 extra data after the compression methods not only for TLS 1.0
2786 but also for SSL 3.0 (as required by the specification).
2787 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2789 *) Change X509_certificate_type() to mark the key as exported/exportable
2790 when it's 512 *bits* long, not 512 bytes.
2793 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
2795 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2796 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2797 a protocol version number mismatch like a decryption error
2798 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2801 *) Turn on RSA blinding by default in the default implementation
2802 to avoid a timing attack. Applications that don't want it can call
2803 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2804 They would be ill-advised to do so in most cases.
2805 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2807 *) Change RSA blinding code so that it works when the PRNG is not
2808 seeded (in this case, the secret RSA exponent is abused as
2809 an unpredictable seed -- if it is not unpredictable, there
2810 is no point in blinding anyway). Make RSA blinding thread-safe
2811 by remembering the creator's thread ID in rsa->blinding and
2812 having all other threads use local one-time blinding factors
2813 (this requires more computation than sharing rsa->blinding, but
2814 avoids excessive locking; and if an RSA object is not shared
2815 between threads, blinding will still be very fast).
2818 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
2820 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2821 via timing by performing a MAC computation even if incorrrect
2822 block cipher padding has been found. This is a countermeasure
2823 against active attacks where the attacker has to distinguish
2824 between bad padding and a MAC verification error. (CAN-2003-0078)
2826 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2827 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2828 Martin Vuagnoux (EPFL, Ilion)]
2830 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2832 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2833 memory from it's contents. This is done with a counter that will
2834 place alternating values in each byte. This can be used to solve
2835 two issues: 1) the removal of calls to memset() by highly optimizing
2836 compilers, and 2) cleansing with other values than 0, since those can
2837 be read through on certain media, for example a swap space on disk.
2840 *) Bugfix: client side session caching did not work with external caching,
2841 because the session->cipher setting was not restored when reloading
2842 from the external cache. This problem was masked, when
2843 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
2844 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
2847 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
2848 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
2849 [Zeev Lieber <zeev-l@yahoo.com>]
2851 *) Undo an undocumented change introduced in 0.9.6e which caused
2852 repeated calls to OpenSSL_add_all_ciphers() and
2853 OpenSSL_add_all_digests() to be ignored, even after calling
2857 *) Change the default configuration reader to deal with last line not
2858 being properly terminated.
2861 *) Change X509_NAME_cmp() so it applies the special rules on handling
2862 DN values that are of type PrintableString, as well as RDNs of type
2863 emailAddress where the value has the type ia5String.
2864 [stefank@valicert.com via Richard Levitte]
2866 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
2867 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
2868 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
2869 the bitwise-OR of the two for use by the majority of applications
2870 wanting this behaviour, and update the docs. The documented
2871 behaviour and actual behaviour were inconsistent and had been
2872 changing anyway, so this is more a bug-fix than a behavioural
2874 [Geoff Thorpe, diagnosed by Nadav Har'El]
2876 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
2877 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
2880 *) Fix initialization code race conditions in
2881 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
2882 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
2883 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
2884 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
2885 ssl2_get_cipher_by_char(),
2886 ssl3_get_cipher_by_char().
2887 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
2889 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
2890 the cached sessions are flushed, as the remove_cb() might use ex_data
2891 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
2892 (see [openssl.org #212]).
2893 [Geoff Thorpe, Lutz Jaenicke]
2895 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
2896 length, instead of the encoding length to d2i_ASN1_OBJECT.
2899 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
2901 *) [In 0.9.6g-engine release:]
2902 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
2903 [Lynn Gazis <lgazis@rainbow.com>]
2905 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
2907 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
2908 and get fix the header length calculation.
2909 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
2910 Alon Kantor <alonk@checkpoint.com> (and others),
2913 *) Use proper error handling instead of 'assertions' in buffer
2914 overflow checks added in 0.9.6e. This prevents DoS (the
2915 assertions could call abort()).
2916 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
2918 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
2920 *) Add various sanity checks to asn1_get_length() to reject
2921 the ASN1 length bytes if they exceed sizeof(long), will appear
2922 negative or the content length exceeds the length of the
2924 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2926 *) Fix cipher selection routines: ciphers without encryption had no flags
2927 for the cipher strength set and where therefore not handled correctly
2928 by the selection routines (PR #130).
2931 *) Fix EVP_dsa_sha macro.
2935 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
2936 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
2937 that was added in OpenSSL 0.9.6d.
2939 As the countermeasure turned out to be incompatible with some
2940 broken SSL implementations, the new option is part of SSL_OP_ALL.
2941 SSL_OP_ALL is usually employed when compatibility with weird SSL
2942 implementations is desired (e.g. '-bugs' option to 's_client' and
2943 's_server'), so the new option is automatically set in many
2947 *) Changes in security patch:
2949 Changes marked "(CHATS)" were sponsored by the Defense Advanced
2950 Research Projects Agency (DARPA) and Air Force Research Laboratory,
2951 Air Force Materiel Command, USAF, under agreement number
2954 *) Add various sanity checks to asn1_get_length() to reject
2955 the ASN1 length bytes if they exceed sizeof(long), will appear
2956 negative or the content length exceeds the length of the
2957 supplied buffer. (CAN-2002-0659)
2958 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2960 *) Assertions for various potential buffer overflows, not known to
2962 [Ben Laurie (CHATS)]
2964 *) Various temporary buffers to hold ASCII versions of integers were
2965 too small for 64 bit platforms. (CAN-2002-0655)
2966 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
2968 *) Remote buffer overflow in SSL3 protocol - an attacker could
2969 supply an oversized session ID to a client. (CAN-2002-0656)
2970 [Ben Laurie (CHATS)]
2972 *) Remote buffer overflow in SSL2 protocol - an attacker could
2973 supply an oversized client master key. (CAN-2002-0656)
2974 [Ben Laurie (CHATS)]
2976 Changes between 0.9.6c and 0.9.6d [9 May 2002]
2978 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
2979 encoded as NULL) with id-dsa-with-sha1.
2980 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
2982 *) Check various X509_...() return values in apps/req.c.
2983 [Nils Larsch <nla@trustcenter.de>]
2985 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
2986 an end-of-file condition would erronously be flagged, when the CRLF
2987 was just at the end of a processed block. The bug was discovered when
2988 processing data through a buffering memory BIO handing the data to a
2989 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
2990 <ptsekov@syntrex.com> and Nedelcho Stanev.
2993 *) Implement a countermeasure against a vulnerability recently found
2994 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
2995 before application data chunks to avoid the use of known IVs
2996 with data potentially chosen by the attacker.
2999 *) Fix length checks in ssl3_get_client_hello().
3002 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3003 to prevent ssl3_read_internal() from incorrectly assuming that
3004 ssl3_read_bytes() found application data while handshake
3005 processing was enabled when in fact s->s3->in_read_app_data was
3006 merely automatically cleared during the initial handshake.
3007 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3009 *) Fix object definitions for Private and Enterprise: they were not
3010 recognized in their shortname (=lowercase) representation. Extend
3011 obj_dat.pl to issue an error when using undefined keywords instead
3012 of silently ignoring the problem (Svenning Sorensen
3013 <sss@sss.dnsalias.net>).
3016 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3017 generators, i.e. generators other than 2 and 5. (Previously, the
3018 code did not properly initialise the 'add' and 'rem' values to
3019 BN_generate_prime().)
3021 In the new general case, we do not insist that 'generator' is
3022 actually a primitive root: This requirement is rather pointless;
3023 a generator of the order-q subgroup is just as good, if not
3027 *) Map new X509 verification errors to alerts. Discovered and submitted by
3028 Tom Wu <tom@arcot.com>.
3031 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3032 returning non-zero before the data has been completely received
3033 when using non-blocking I/O.
3034 [Bodo Moeller; problem pointed out by John Hughes]
3036 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3037 [Ben Laurie, Lutz Jaenicke]
3039 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3040 Yoram Zahavi <YoramZ@gilian.com>).
3043 *) Add information about CygWin 1.3 and on, and preserve proper
3044 configuration for the versions before that.
3045 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3047 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3048 check whether we deal with a copy of a session and do not delete from
3049 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3050 <izhar@checkpoint.com>.
3053 *) Do not store session data into the internal session cache, if it
3054 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3055 flag is set). Proposed by Aslam <aslam@funk.com>.
3058 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3062 *) [In 0.9.6d-engine release:]
3063 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3064 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3066 *) Add the configuration target linux-s390x.
3067 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3069 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3070 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3071 variable as an indication that a ClientHello message has been
3072 received. As the flag value will be lost between multiple
3073 invocations of ssl3_accept when using non-blocking I/O, the
3074 function may not be aware that a handshake has actually taken
3075 place, thus preventing a new session from being added to the
3078 To avoid this problem, we now set s->new_session to 2 instead of
3079 using a local variable.
3080 [Lutz Jaenicke, Bodo Moeller]
3082 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3083 if the SSL_R_LENGTH_MISMATCH error is detected.
3084 [Geoff Thorpe, Bodo Moeller]
3086 *) New 'shared_ldflag' column in Configure platform table.
3089 *) Fix EVP_CIPHER_mode macro.
3090 ["Dan S. Camper" <dan@bti.net>]
3092 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3093 type, we must throw them away by setting rr->length to 0.
3094 [D P Chang <dpc@qualys.com>]
3096 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3098 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3099 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3100 worked incorrectly for those cases where range = 10..._2 and
3101 3*range is two bits longer than range.)
3104 *) Only add signing time to PKCS7 structures if it is not already
3108 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3109 OBJ_ld_ce should be OBJ_id_ce.
3110 Also some ip-pda OIDs in crypto/objects/objects.txt were
3111 incorrect (cf. RFC 3039).
3112 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3114 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3115 returns early because it has nothing to do.
3116 [Andy Schneider <andy.schneider@bjss.co.uk>]
3118 *) [In 0.9.6c-engine release:]
3119 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3120 [Andy Schneider <andy.schneider@bjss.co.uk>]
3122 *) [In 0.9.6c-engine release:]
3123 Add support for Cryptographic Appliance's keyserver technology.
3124 (Use engine 'keyclient')
3125 [Cryptographic Appliances and Geoff Thorpe]
3127 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3128 is called via tools/c89.sh because arguments have to be
3129 rearranged (all '-L' options must appear before the first object
3131 [Richard Shapiro <rshapiro@abinitio.com>]
3133 *) [In 0.9.6c-engine release:]
3134 Add support for Broadcom crypto accelerator cards, backported
3136 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3138 *) [In 0.9.6c-engine release:]
3139 Add support for SureWare crypto accelerator cards from
3140 Baltimore Technologies. (Use engine 'sureware')
3141 [Baltimore Technologies and Mark Cox]
3143 *) [In 0.9.6c-engine release:]
3144 Add support for crypto accelerator cards from Accelerated
3145 Encryption Processing, www.aep.ie. (Use engine 'aep')
3146 [AEP Inc. and Mark Cox]
3148 *) Add a configuration entry for gcc on UnixWare.
3149 [Gary Benson <gbenson@redhat.com>]
3151 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3152 messages are stored in a single piece (fixed-length part and
3153 variable-length part combined) and fix various bugs found on the way.
3156 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3157 instead. BIO_gethostbyname() does not know what timeouts are
3158 appropriate, so entries would stay in cache even when they have
3160 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3162 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3163 faced with a pathologically small ClientHello fragment that does
3164 not contain client_version: Instead of aborting with an error,
3165 simply choose the highest available protocol version (i.e.,
3166 TLS 1.0 unless it is disabled). In practice, ClientHello
3167 messages are never sent like this, but this change gives us
3168 strictly correct behaviour at least for TLS.
3171 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3172 never resets s->method to s->ctx->method when called from within
3173 one of the SSL handshake functions.
3174 [Bodo Moeller; problem pointed out by Niko Baric]
3176 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3177 (sent using the client's version number) if client_version is
3178 smaller than the protocol version in use. Also change
3179 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3180 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3181 the client will at least see that alert.
3184 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3188 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3189 client receives HelloRequest while in a handshake.
3190 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3192 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3193 should end in 'break', not 'goto end' which circuments various
3194 cleanups done in state SSL_ST_OK. But session related stuff
3195 must be disabled for SSL_ST_OK in the case that we just sent a
3198 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3199 before just sending a HelloRequest.
3200 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3202 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3203 reveal whether illegal block cipher padding was found or a MAC
3204 verification error occured. (Neither SSLerr() codes nor alerts
3205 are directly visible to potential attackers, but the information
3206 may leak via logfiles.)
3208 Similar changes are not required for the SSL 2.0 implementation
3209 because the number of padding bytes is sent in clear for SSL 2.0,
3210 and the extra bytes are just ignored. However ssl/s2_pkt.c
3211 failed to verify that the purported number of padding bytes is in
3215 *) Add OpenUNIX-8 support including shared libraries
3216 (Boyd Lynn Gerber <gerberb@zenez.com>).
3219 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3220 'wristwatch attack' using huge encoding parameters (cf.
3221 James H. Manger's CRYPTO 2001 paper). Note that the
3222 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3223 encoding parameters and hence was not vulnerable.
3226 *) BN_sqr() bug fix.
3227 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3229 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3230 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3231 followed by modular reduction.
3232 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3234 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3235 equivalent based on BN_pseudo_rand() instead of BN_rand().
3238 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3239 This function was broken, as the check for a new client hello message
3240 to handle SGC did not allow these large messages.
3241 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3244 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3247 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3248 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3251 *) Rework the configuration and shared library support for Tru64 Unix.
3252 The configuration part makes use of modern compiler features and
3253 still retains old compiler behavior for those that run older versions
3254 of the OS. The shared library support part includes a variant that
3255 uses the RPATH feature, and is available through the special
3256 configuration target "alpha-cc-rpath", which will never be selected
3258 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3260 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3261 with the same message size as in ssl3_get_certificate_request().
3262 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3263 messages might inadvertently be reject as too long.
3264 [Petr Lampa <lampa@fee.vutbr.cz>]
3266 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3269 *) Modified SSL library such that the verify_callback that has been set
3270 specificly for an SSL object with SSL_set_verify() is actually being
3271 used. Before the change, a verify_callback set with this function was
3272 ignored and the verify_callback() set in the SSL_CTX at the time of
3273 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3274 to allow the necessary settings.
3277 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3278 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3279 done automatically (in contradiction to the requirements of the C
3280 standard). This made problems when used from OpenSSH.
3283 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3284 dh->length and always used
3286 BN_rand_range(priv_key, dh->p).
3288 BN_rand_range() is not necessary for Diffie-Hellman, and this
3289 specific range makes Diffie-Hellman unnecessarily inefficient if
3290 dh->length (recommended exponent length) is much smaller than the
3291 length of dh->p. We could use BN_rand_range() if the order of
3292 the subgroup was stored in the DH structure, but we only have
3297 BN_rand(priv_key, l, ...)
3299 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3305 RSA_eay_public_encrypt
3306 RSA_eay_private_decrypt
3307 RSA_eay_private_encrypt (signing)
3308 RSA_eay_public_decrypt (signature verification)
3310 (default implementations for RSA_public_encrypt,
3311 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3312 always reject numbers >= n.
3315 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3316 to synchronize access to 'locking_thread'. This is necessary on
3317 systems where access to 'locking_thread' (an 'unsigned long'
3318 variable) is not atomic.
3321 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3322 *before* setting the 'crypto_lock_rand' flag. The previous code had
3323 a race condition if 0 is a valid thread ID.
3324 [Travis Vitek <vitek@roguewave.com>]
3326 *) Add support for shared libraries under Irix.
3327 [Albert Chin-A-Young <china@thewrittenword.com>]
3329 *) Add configuration option to build on Linux on both big-endian and
3331 [Ralf Baechle <ralf@uni-koblenz.de>]
3333 *) Add the possibility to create shared libraries on HP-UX.
3336 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3338 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3339 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3340 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3341 PRNG state recovery was possible based on the output of
3342 one PRNG request appropriately sized to gain knowledge on
3343 'md' followed by enough consecutive 1-byte PRNG requests
3344 to traverse all of 'state'.
3346 1. When updating 'md_local' (the current thread's copy of 'md')
3347 during PRNG output generation, hash all of the previous
3348 'md_local' value, not just the half used for PRNG output.
3350 2. Make the number of bytes from 'state' included into the hash
3351 independent from the number of PRNG bytes requested.
3353 The first measure alone would be sufficient to avoid
3354 Markku-Juhani's attack. (Actually it had never occurred
3355 to me that the half of 'md_local' used for chaining was the
3356 half from which PRNG output bytes were taken -- I had always
3357 assumed that the secret half would be used.) The second
3358 measure makes sure that additional data from 'state' is never
3359 mixed into 'md_local' in small portions; this heuristically
3360 further strengthens the PRNG.
3363 *) Fix crypto/bn/asm/mips3.s.
3366 *) When only the key is given to "enc", the IV is undefined. Print out
3367 an error message in this case.
3370 *) Handle special case when X509_NAME is empty in X509 printing routines.
3373 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3374 positive and less than q.
3377 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3378 used: it isn't thread safe and the add_lock_callback should handle
3380 [Paul Rose <Paul.Rose@bridge.com>]
3382 *) Verify that incoming data obeys the block size in
3383 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3387 [Ulf Möller, Bodo Möller]
3389 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3390 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3391 when fixing the server behaviour for backwards-compatible 'client
3392 hello' messages. (Note that the attack is impractical against
3393 SSL 3.0 and TLS 1.0 anyway because length and version checking
3394 means that the probability of guessing a valid ciphertext is
3395 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3398 Before 0.9.5, the countermeasure (hide the error by generating a
3399 random 'decryption result') did not work properly because
3400 ERR_clear_error() was missing, meaning that SSL_get_error() would
3401 detect the supposedly ignored error.
3403 Both problems are now fixed.
3406 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3407 (previously it was 1024).
3410 *) Fix for compatibility mode trust settings: ignore trust settings
3411 unless some valid trust or reject settings are present.
3414 *) Fix for blowfish EVP: its a variable length cipher.
3417 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3418 parameters in DSA public key structures and return an error in the
3419 DSA routines if parameters are absent.
3422 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3423 in the current directory if neither $RANDFILE nor $HOME was set.
3424 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3425 caused some confusion to Windows users who haven't defined $HOME.
3426 Thus RAND_file_name() is changed again: e_os.h can define a
3427 DEFAULT_HOME, which will be used if $HOME is not set.
3428 For Windows, we use "C:"; on other platforms, we still require
3429 environment variables.
3431 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3432 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3433 having multiple threads call RAND_poll() concurrently.
3436 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3437 combination of a flag and a thread ID variable.
3438 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3439 flag), *other* threads can enter ssleay_add_bytes without obeying
3440 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3441 that they do not hold after the first thread unsets add_do_not_lock).
3444 *) Change bctest again: '-x' expressions are not available in all
3448 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3450 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3451 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3453 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3454 the default extension for executables, if any. Also, make the perl
3455 scripts that use symlink() to test if it really exists and use "cp"
3456 if it doesn't. All this made OpenSSL compilable and installable in
3460 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3461 If SEQUENCE is length is indefinite just set c->slen to the total
3462 amount of data available.
3463 [Steve Henson, reported by shige@FreeBSD.org]
3464 [This change does not apply to 0.9.7.]
3466 *) Change bctest to avoid here-documents inside command substitution
3467 (workaround for FreeBSD /bin/sh bug).
3468 For compatibility with Ultrix, avoid shell functions (introduced
3469 in the bctest version that searches along $PATH).
3472 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3473 with des_encrypt() defined on some operating systems, like Solaris
3477 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3478 On the Importance of Eliminating Errors in Cryptographic
3479 Computations, J. Cryptology 14 (2001) 2, 101-119,
3480 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3483 *) MIPS assembler BIGNUM division bug fix.
3486 *) Disabled incorrect Alpha assembler code.
3489 *) Fix PKCS#7 decode routines so they correctly update the length
3490 after reading an EOC for the EXPLICIT tag.
3492 [This change does not apply to 0.9.7.]
3494 *) Fix bug in PKCS#12 key generation routines. This was triggered
3495 if a 3DES key was generated with a 0 initial byte. Include
3496 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3497 (but broken) behaviour.
3500 *) Enhance bctest to search for a working bc along $PATH and print
3502 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3504 *) Fix memory leaks in err.c: free err_data string if necessary;
3505 don't write to the wrong index in ERR_set_error_data.
3508 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3512 *) Replace rdtsc with _emit statements for VC++ version 5.
3513 [Jeremy Cooper <jeremy@baymoo.org>]
3515 *) Make it possible to reuse SSLv2 sessions.
3518 *) In copy_email() check for >= 0 as a return value for
3519 X509_NAME_get_index_by_NID() since 0 is a valid index.
3520 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3522 *) Avoid coredump with unsupported or invalid public keys by checking if
3523 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3524 PKCS7_verify() fails with non detached data.
3527 *) Don't use getenv in library functions when run as setuid/setgid.
3528 New function OPENSSL_issetugid().
3531 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3532 due to incorrect handling of multi-threading:
3534 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3536 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3538 3. Count how many times MemCheck_off() has been called so that
3539 nested use can be treated correctly. This also avoids
3540 inband-signalling in the previous code (which relied on the
3541 assumption that thread ID 0 is impossible).
3544 *) Add "-rand" option also to s_client and s_server.
3547 *) Fix CPU detection on Irix 6.x.
3548 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3549 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3551 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3554 [This change does not apply to 0.9.7.]
3556 *) Use the cached encoding of an X509_NAME structure rather than
3557 copying it. This is apparently the reason for the libsafe "errors"
3558 but the code is actually correct.
3561 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3562 Bleichenbacher's DSA attack.
3563 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3564 to be set and top=0 forces the highest bit to be set; top=-1 is new
3565 and leaves the highest bit random.
3566 [Ulf Moeller, Bodo Moeller]
3568 *) In the NCONF_...-based implementations for CONF_... queries
3569 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3570 a temporary CONF structure with the data component set to NULL
3571 (which gives segmentation faults in lh_retrieve).
3572 Instead, use NULL for the CONF pointer in CONF_get_string and
3573 CONF_get_number (which may use environment variables) and directly
3574 return NULL from CONF_get_section.
3577 *) Fix potential buffer overrun for EBCDIC.
3580 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3581 keyUsage if basicConstraints absent for a CA.
3584 *) Make SMIME_write_PKCS7() write mail header values with a format that
3585 is more generally accepted (no spaces before the semicolon), since
3586 some programs can't parse those values properly otherwise. Also make
3587 sure BIO's that break lines after each write do not create invalid
3591 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3592 macros previously used would not encode an empty SEQUENCE OF
3593 and break the signature.
3595 [This change does not apply to 0.9.7.]
3597 *) Zero the premaster secret after deriving the master secret in
3601 *) Add some EVP_add_digest_alias registrations (as found in
3602 OpenSSL_add_all_digests()) to SSL_library_init()
3603 aka OpenSSL_add_ssl_algorithms(). This provides improved
3604 compatibility with peers using X.509 certificates
3605 with unconventional AlgorithmIdentifier OIDs.
3608 *) Fix for Irix with NO_ASM.
3609 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3611 *) ./config script fixes.
3612 [Ulf Moeller, Richard Levitte]
3614 *) Fix 'openssl passwd -1'.
3617 *) Change PKCS12_key_gen_asc() so it can cope with non null
3618 terminated strings whose length is passed in the passlen
3619 parameter, for example from PEM callbacks. This was done
3620 by adding an extra length parameter to asc2uni().
3621 [Steve Henson, reported by <oddissey@samsung.co.kr>]
3623 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
3624 call failed, free the DSA structure.
3627 *) Fix to uni2asc() to cope with zero length Unicode strings.
3628 These are present in some PKCS#12 files.
3631 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
3632 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
3633 when writing a 32767 byte record.
3634 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
3636 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
3637 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
3639 (RSA objects have a reference count access to which is protected
3640 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
3641 so they are meant to be shared between threads.)
3642 [Bodo Moeller, Geoff Thorpe; original patch submitted by
3643 "Reddie, Steven" <Steven.Reddie@ca.com>]
3645 *) Fix a deadlock in CRYPTO_mem_leaks().
3648 *) Use better test patterns in bntest.
3651 *) rand_win.c fix for Borland C.
3654 *) BN_rshift bugfix for n == 0.
3657 *) Add a 'bctest' script that checks for some known 'bc' bugs
3658 so that 'make test' does not abort just because 'bc' is broken.
3661 *) Store verify_result within SSL_SESSION also for client side to
3662 avoid potential security hole. (Re-used sessions on the client side
3663 always resulted in verify_result==X509_V_OK, not using the original
3664 result of the server certificate verification.)
3667 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
3668 SSL3_RT_APPLICATION_DATA, return 0.
3669 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
3673 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
3674 releases, have been re-implemented by renaming the previous
3675 implementations of ssl2_read and ssl3_read to ssl2_read_internal
3676 and ssl3_read_internal, respectively, and adding 'peek' parameters
3677 to them. The new ssl[23]_{read,peek} functions are calls to
3678 ssl[23]_read_internal with the 'peek' flag set appropriately.
3679 A 'peek' parameter has also been added to ssl3_read_bytes, which
3680 does the actual work for ssl3_read_internal.
3683 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
3684 the method-specific "init()" handler. Also clean up ex_data after
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