5 Changes between 0.9.7c and 0.9.8 [xx XXX xxxx]
7 *) Add the possibility to load symbols globally with DSO.
8 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
10 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
11 control of the error stack.
14 *) Add support for STORE in ENGINE.
17 *) Add the STORE type. The intention is to provide a common interface
18 to certificate and key stores, be they simple file-based stores, or
19 HSM-type store, or LDAP stores, or...
20 NOTE: The code is currently UNTESTED and isn't really used anywhere.
23 *) Add a generic structure called OPENSSL_ITEM. This can be used to
24 pass a list of arguments to any function as well as provide a way
25 for a function to pass data back to the caller.
28 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
29 works like BUF_strdup() but can be used to duplicate a portion of
30 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
34 *) Add the function sk_find_ex() which works like sk_find(), but will
35 return an index to an element even if an exact match couldn't be
36 found. The index is guaranteed to point at the element where the
37 searched-for key would be inserted to preserve sorting order.
40 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
41 takes an extra flags argument for optional functionality. Currently,
42 the following flags are defined:
44 OBJ_BSEARCH_VALUE_ON_NOMATCH
45 This one gets OBJ_bsearch_ex() to return a pointer to the first
46 element where the comparing function returns a negative or zero
49 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
50 This one gets OBJ_bsearch_ex() to return a pointer to the first
51 element where the comparing function returns zero. This is useful
52 if there are more than one element where the comparing function
56 *) Make it possible to create self-signed certificates with 'openssl ca'
57 in such a way that the self-signed certificate becomes part of the
58 CA database and uses the same mechanisms for serial number generation
59 as all other certificate signing. The new flag '-selfsign' enables
60 this functionality. Adapt CA.sh and CA.pl.in.
63 *) Add functionality to check the public key of a certificate request
64 against a given private. This is useful to check that a certificate
65 request can be signed by that key (self-signing).
68 *) Make it possible to have multiple active certificates with the same
69 subject in the CA index file. This is done only if the keyword
70 'unique_subject' is set to 'no' in the main CA section (default
71 if 'CA_default') of the configuration file. The value is saved
72 with the database itself in a separate index attribute file,
73 named like the index file with '.attr' appended to the name.
76 *) Generate muti valued AVAs using '+' notation in config files for
80 *) Support for nameConstraints certificate extension.
83 *) Support for policyConstraints certificate extension.
86 *) Support for policyMappings certificate extension.
89 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
90 ENGINE as defaults for all supported algorithms irrespective of
91 the 'flags' parameter. 'flags' is now honoured, so applications
92 should make sure they are passing it correctly.
95 *) Make sure the default DSA_METHOD implementation only uses its
96 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
97 and change its own handlers to be NULL so as to remove unnecessary
98 indirection. This lets alternative implementations fallback to the
99 default implementation more easily.
102 *) Support for directoryName in GeneralName related extensions
106 *) Make it possible to link applications using Makefile.shared.
107 Make that possible even when linking against static libraries!
110 *) Support for single pass processing for S/MIME signing. This now
111 means that S/MIME signing can be done from a pipe, in addition
112 cleartext signing (multipart/signed type) is effectively streaming
113 and the signed data does not need to be all held in memory.
115 This is done with a new flag PKCS7_STREAM. When this flag is set
116 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
117 is done after the data is output (and digests calculated) in
121 *) Add full support for -rpath/-R, both in shared libraries and
122 applications, at least on the platforms where it's known how
126 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
127 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
128 will now compute a table of multiples of the generator that
129 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
130 faster (notably in the case of a single point multiplication,
132 [Nils Larsch, Bodo Moeller]
134 *) IPv6 support for certificate extensions. The various extensions
135 which use the IP:a.b.c.d can now take IPv6 addresses using the
136 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
140 *) Added an ENGINE that implements RSA by performing private key
141 exponentiations with the GMP library. The conversions to and from
142 GMP's mpz_t format aren't optimised nor are any montgomery forms
143 cached, and on x86 it appears OpenSSL's own performance has caught up.
144 However there are likely to be other architectures where GMP could
145 provide a boost. This ENGINE is not built in by default, but it can be
146 specified at Configure time and should be accompanied by the necessary
147 linker additions, eg;
148 ./config -DOPENSSL_USE_GMP -lgmp
151 *) "openssl engine" will not display ENGINE/DSO load failure errors when
152 testing availability of engines with "-t" - the old behaviour is
153 produced by increasing the feature's verbosity with "-tt".
156 *) ECDSA routines: under certain error conditions uninitialized BN objects
157 could be freed. Solution: make sure initialization is performed early
158 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
162 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
163 and DH_METHOD (eg. by ENGINE implementations) to override the normal
164 software implementations. For DSA and DH, parameter generation can
165 also be overriden by providing the appropriate method callbacks.
168 *) Change the "progress" mechanism used in key-generation and
169 primality testing to functions that take a new BN_GENCB pointer in
170 place of callback/argument pairs. The new API functions have "_ex"
171 postfixes and the older functions are reimplemented as wrappers for
172 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
173 declarations of the old functions to help (graceful) attempts to
174 migrate to the new functions. Also, the new key-generation API
175 functions operate on a caller-supplied key-structure and return
176 success/failure rather than returning a key or NULL - this is to
177 help make "keygen" another member function of RSA_METHOD etc.
179 Example for using the new callback interface:
181 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
185 BN_GENCB_set(&my_cb, my_callback, my_arg);
187 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
188 /* For the meaning of a, b in calls to my_callback(), see the
189 * documentation of the function that calls the callback.
190 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
191 * my_callback should return 1 if it wants BN_is_prime_ex()
192 * to continue, or 0 to stop.
197 *) Change the ZLIB compression method to be stateful, and make it
198 available to TLS with the number defined in
199 draft-ietf-tls-compression-04.txt.
202 *) Add the ASN.1 structures and functions for CertificatePair, which
203 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
205 CertificatePair ::= SEQUENCE {
206 forward [0] Certificate OPTIONAL,
207 reverse [1] Certificate OPTIONAL,
208 -- at least one of the pair shall be present -- }
210 Also implement the PEM functions to read and write certificate
211 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
213 This needed to be defined, mostly for the sake of the LDAP
214 attribute crossCertificatePair, but may prove useful elsewhere as
218 *) Make it possible to inhibit symlinking of shared libraries in
219 Makefile.shared, for Cygwin's sake.
222 *) Extend the BIGNUM API by creating new macros that behave like
225 void BN_set_sign(BIGNUM *a, int neg);
226 int BN_get_sign(const BIGNUM *a);
228 and avoid the need to access 'a->neg' directly in applications.
229 [Nils Larsch <nla@trustcenter.de>]
231 *) Implement fast modular reduction for pseudo-Mersenne primes
232 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
233 EC_GROUP_new_curve_GFp() will now automatically use this
235 [Nils Larsch <nla@trustcenter.de>]
237 *) Add new lock type (CRYPTO_LOCK_BN).
240 *) Change the ENGINE framework to automatically load engines
241 dynamically from specific directories unless they could be
242 found to already be built in or loaded. Move all the
243 current engines except for the cryptodev one to a new
245 The engines in engines/ are built as shared libraries if
246 the "shared" options was given to ./Configure or ./config.
247 Otherwise, they are inserted in libcrypto.a.
248 /usr/local/ssl/engines is the default directory for dynamic
249 engines, but that can be overriden at configure time through
250 the usual use of --prefix and/or --openssldir, and at run
251 time with the environment variable OPENSSL_ENGINES.
252 [Geoff Thorpe and Richard Levitte]
254 *) Add Makefile.shared, a helper makefile to build shared
255 libraries. Addapt Makefile.org.
258 *) Add version info to Win32 DLLs.
259 [Peter 'Luna' Runestig" <peter@runestig.com>]
261 *) Add new 'medium level' PKCS#12 API. Certificates and keys
262 can be added using this API to created arbitrary PKCS#12
263 files while avoiding the low level API.
265 New options to PKCS12_create(), key or cert can be NULL and
266 will then be omitted from the output file. The encryption
267 algorithm NIDs can be set to -1 for no encryption, the mac
268 iteration count can be set to 0 to omit the mac.
270 Enhance pkcs12 utility by making the -nokeys and -nocerts
271 options work when creating a PKCS#12 file. New option -nomac
272 to omit the mac, NONE can be set for an encryption algorithm.
273 New code is modified to use the enhanced PKCS12_create()
274 instead of the low level API.
277 *) Extend ASN1 encoder to support indefinite length constructed
278 encoding. This can output sequences tags and octet strings in
279 this form. Modify pk7_asn1.c to support indefinite length
280 encoding. This is experimental and needs additional code to
281 be useful, such as an ASN1 bio and some enhanced streaming
284 Extend template encode functionality so that tagging is passed
285 down to the template encoder.
288 *) Let 'openssl req' fail if an argument to '-newkey' is not
289 recognized instead of using RSA as a default.
292 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
293 As these are not official, they are not included in "ALL";
294 the "ECCdraft" ciphersuite group alias can be used to select them.
295 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
297 *) Add ECDH engine support.
298 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
300 *) Add ECDH in new directory crypto/ecdh/.
301 [Douglas Stebila (Sun Microsystems Laboratories)]
303 *) Let BN_rand_range() abort with an error after 100 iterations
304 without success (which indicates a broken PRNG).
307 *) Change BN_mod_sqrt() so that it verifies that the input value
308 is really the square of the return value. (Previously,
309 BN_mod_sqrt would show GIGO behaviour.)
312 *) Add named elliptic curves over binary fields from X9.62, SECG,
313 and WAP/WTLS; add OIDs that were still missing.
315 [Sheueling Chang Shantz and Douglas Stebila
316 (Sun Microsystems Laboratories)]
318 *) Extend the EC library for elliptic curves over binary fields
319 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
322 EC_GF2m_simple_method
326 EC_GROUP_new_curve_GF2m
327 EC_GROUP_set_curve_GF2m
328 EC_GROUP_get_curve_GF2m
329 EC_POINT_set_affine_coordinates_GF2m
330 EC_POINT_get_affine_coordinates_GF2m
331 EC_POINT_set_compressed_coordinates_GF2m
333 Point compression for binary fields is disabled by default for
334 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
337 As binary polynomials are represented as BIGNUMs, various members
338 of the EC_GROUP and EC_POINT data structures can be shared
339 between the implementations for prime fields and binary fields;
340 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
341 are essentially identical to their ..._GFp counterparts.
342 (For simplicity, the '..._GFp' prefix has been dropped from
343 various internal method names.)
345 An internal 'field_div' method (similar to 'field_mul' and
346 'field_sqr') has been added; this is used only for binary fields.
348 [Sheueling Chang Shantz and Douglas Stebila
349 (Sun Microsystems Laboratories)]
351 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
352 through methods ('mul', 'precompute_mult').
354 The generic implementations (now internally called 'ec_wNAF_mul'
355 and 'ec_wNAF_precomputed_mult') remain the default if these
356 methods are undefined.
358 [Sheueling Chang Shantz and Douglas Stebila
359 (Sun Microsystems Laboratories)]
361 *) New function EC_GROUP_get_degree, which is defined through
362 EC_METHOD. For curves over prime fields, this returns the bit
363 length of the modulus.
365 [Sheueling Chang Shantz and Douglas Stebila
366 (Sun Microsystems Laboratories)]
368 *) New functions EC_GROUP_dup, EC_POINT_dup.
369 (These simply call ..._new and ..._copy).
371 [Sheueling Chang Shantz and Douglas Stebila
372 (Sun Microsystems Laboratories)]
374 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
375 Polynomials are represented as BIGNUMs (where the sign bit is not
376 used) in the following functions [macros]:
379 BN_GF2m_sub [= BN_GF2m_add]
380 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
381 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
382 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
384 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
385 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
386 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
387 BN_GF2m_cmp [= BN_ucmp]
389 (Note that only the 'mod' functions are actually for fields GF(2^m).
390 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
392 For some functions, an the irreducible polynomial defining a
393 field can be given as an 'unsigned int[]' with strictly
394 decreasing elements giving the indices of those bits that are set;
395 i.e., p[] represents the polynomial
396 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
398 p[0] > p[1] > ... > p[k] = 0.
399 This applies to the following functions:
404 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
405 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
408 BN_GF2m_mod_solve_quad_arr
412 Conversion can be performed by the following functions:
417 bntest.c has additional tests for binary polynomial arithmetic.
419 Two implementations for BN_GF2m_mod_div() are available.
420 The default algorithm simply uses BN_GF2m_mod_inv() and
421 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
422 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
423 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
425 [Sheueling Chang Shantz and Douglas Stebila
426 (Sun Microsystems Laboratories)]
428 *) Add new error code 'ERR_R_DISABLED' that can be used when some
429 functionality is disabled at compile-time.
430 [Douglas Stebila <douglas.stebila@sun.com>]
432 *) Change default behaviour of 'openssl asn1parse' so that more
433 information is visible when viewing, e.g., a certificate:
435 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
436 mode the content of non-printable OCTET STRINGs is output in a
437 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
438 avoid the appearance of a printable string.
439 [Nils Larsch <nla@trustcenter.de>]
441 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
443 EC_GROUP_set_asn1_flag()
444 EC_GROUP_get_asn1_flag()
445 EC_GROUP_set_point_conversion_form()
446 EC_GROUP_get_point_conversion_form()
447 These control ASN1 encoding details:
448 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
449 has been set to OPENSSL_EC_NAMED_CURVE.
450 - Points are encoded in uncompressed form by default; options for
451 asn1_for are as for point2oct, namely
452 POINT_CONVERSION_COMPRESSED
453 POINT_CONVERSION_UNCOMPRESSED
454 POINT_CONVERSION_HYBRID
456 Also add 'seed' and 'seed_len' members to EC_GROUP with access
460 EC_GROUP_get_seed_len()
461 This is used only for ASN1 purposes (so far).
462 [Nils Larsch <nla@trustcenter.de>]
464 *) Add 'field_type' member to EC_METHOD, which holds the NID
465 of the appropriate field type OID. The new function
466 EC_METHOD_get_field_type() returns this value.
467 [Nils Larsch <nla@trustcenter.de>]
474 providing useful interfaces to EC_POINT_point2oct() and
475 EC_POINT_oct2point().
476 [Nils Larsch <nla@trustcenter.de>]
478 *) Change internals of the EC library so that the functions
479 EC_GROUP_set_generator()
480 EC_GROUP_get_generator()
482 EC_GROUP_get_cofactor()
483 are implemented directly in crypto/ec/ec_lib.c and not dispatched
484 to methods, which would lead to unnecessary code duplication when
485 adding different types of curves.
486 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
488 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
489 arithmetic, and such that modified wNAFs are generated
490 (which avoid length expansion in many cases).
493 *) Add a function EC_GROUP_check_discriminant() (defined via
494 EC_METHOD) that verifies that the curve discriminant is non-zero.
496 Add a function EC_GROUP_check() that makes some sanity tests
497 on a EC_GROUP, its generator and order. This includes
498 EC_GROUP_check_discriminant().
499 [Nils Larsch <nla@trustcenter.de>]
501 *) Add ECDSA in new directory crypto/ecdsa/.
503 Add applications 'openssl ecparam' and 'openssl ecdsa'
504 (these are based on 'openssl dsaparam' and 'openssl dsa').
506 ECDSA support is also included in various other files across the
507 library. Most notably,
508 - 'openssl req' now has a '-newkey ecdsa:file' option;
509 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
510 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
511 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
512 them suitable for ECDSA where domain parameters must be
513 extracted before the specific public key;
514 - ECDSA engine support has been added.
515 [Nils Larsch <nla@trustcenter.de>]
517 *) Include some named elliptic curves, and add OIDs from X9.62,
518 SECG, and WAP/WTLS. Each curve can be obtained from the new
520 EC_GROUP_new_by_nid(),
521 and the list of available named curves can be obtained with
522 EC_get_builtin_curves().
523 Also add a 'curve_name' member to EC_GROUP objects, which can be
527 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
529 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
530 was actually never needed) and in BN_mul(). The removal in BN_mul()
531 required a small change in bn_mul_part_recursive() and the addition
532 of the functions bn_cmp_part_words(), bn_sub_part_words() and
533 bn_add_part_words(), which do the same thing as bn_cmp_words(),
534 bn_sub_words() and bn_add_words() except they take arrays with
538 Changes between 0.9.7b and 0.9.7c [xx XXX 2003]
540 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
541 extra data after the compression methods not only for TLS 1.0
542 but also for SSL 3.0 (as required by the specification).
543 [Bodo Moeller; problem pointed out by Matthias Loepfe]
545 *) Change X509_certificate_type() to mark the key as exported/exportable
546 when it's 512 *bits* long, not 512 bytes.
549 *) Change AES_cbc_encrypt() so it outputs exact multiple of
550 blocks during encryption.
553 *) Various fixes to base64 BIO and non blocking I/O. On write
554 flushes were not handled properly if the BIO retried. On read
555 data was not being buffered properly and had various logic bugs.
556 This also affects blocking I/O when the data being decoded is a
560 *) Various S/MIME bugfixes and compatibility changes:
561 output correct application/pkcs7 MIME type if
562 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
563 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
564 of files as .eml work). Correctly handle very long lines in MIME
568 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
570 *) Countermeasure against the Klima-Pokorny-Rosa extension of
571 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
572 a protocol version number mismatch like a decryption error
573 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
576 *) Turn on RSA blinding by default in the default implementation
577 to avoid a timing attack. Applications that don't want it can call
578 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
579 They would be ill-advised to do so in most cases.
580 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
582 *) Change RSA blinding code so that it works when the PRNG is not
583 seeded (in this case, the secret RSA exponent is abused as
584 an unpredictable seed -- if it is not unpredictable, there
585 is no point in blinding anyway). Make RSA blinding thread-safe
586 by remembering the creator's thread ID in rsa->blinding and
587 having all other threads use local one-time blinding factors
588 (this requires more computation than sharing rsa->blinding, but
589 avoids excessive locking; and if an RSA object is not shared
590 between threads, blinding will still be very fast).
593 yet to be integrated into this CVS branch:
594 - Geoff's ENGINE_set_default() fix
596 *) Target "mingw" now allows native Windows code to be generated in
597 the Cygwin environment as well as with the MinGW compiler.
600 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
602 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
603 via timing by performing a MAC computation even if incorrrect
604 block cipher padding has been found. This is a countermeasure
605 against active attacks where the attacker has to distinguish
606 between bad padding and a MAC verification error. (CAN-2003-0078)
608 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
609 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
610 Martin Vuagnoux (EPFL, Ilion)]
612 *) Make the no-err option work as intended. The intention with no-err
613 is not to have the whole error stack handling routines removed from
614 libcrypto, it's only intended to remove all the function name and
615 reason texts, thereby removing some of the footprint that may not
616 be interesting if those errors aren't displayed anyway.
618 NOTE: it's still possible for any application or module to have it's
619 own set of error texts inserted. The routines are there, just not
620 used by default when no-err is given.
623 *) Add support for FreeBSD on IA64.
624 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
626 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
627 Kerberos function mit_des_cbc_cksum(). Before this change,
628 the value returned by DES_cbc_cksum() was like the one from
629 mit_des_cbc_cksum(), except the bytes were swapped.
630 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
632 *) Allow an application to disable the automatic SSL chain building.
633 Before this a rather primitive chain build was always performed in
634 ssl3_output_cert_chain(): an application had no way to send the
635 correct chain if the automatic operation produced an incorrect result.
637 Now the chain builder is disabled if either:
639 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
641 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
643 The reasoning behind this is that an application would not want the
644 auto chain building to take place if extra chain certificates are
645 present and it might also want a means of sending no additional
646 certificates (for example the chain has two certificates and the
650 *) Add the possibility to build without the ENGINE framework.
651 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
653 *) Under Win32 gmtime() can return NULL: check return value in
654 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
657 *) DSA routines: under certain error conditions uninitialized BN objects
658 could be freed. Solution: make sure initialization is performed early
659 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
660 Nils Larsch <nla@trustcenter.de> via PR#459)
663 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
664 checked on reconnect on the client side, therefore session resumption
665 could still fail with a "ssl session id is different" error. This
666 behaviour is masked when SSL_OP_ALL is used due to
667 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
668 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
672 *) IA-32 assembler support enhancements: unified ELF targets, support
673 for SCO/Caldera platforms, fix for Cygwin shared build.
676 *) Add support for FreeBSD on sparc64. As a consequence, support for
677 FreeBSD on non-x86 processors is separate from x86 processors on
678 the config script, much like the NetBSD support.
679 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
681 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
683 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
686 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
687 code (06) was taken as the first octet of the session ID and the last
688 octet was ignored consequently. As a result SSLv2 client side session
689 caching could not have worked due to the session ID mismatch between
691 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
695 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
696 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
700 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
701 seems that in spite of existing for more than a year, many application
702 author have done nothing to provide the necessary callbacks, which
703 means that this particular engine will not work properly anywhere.
704 This is a very unfortunate situation which forces us, in the name
705 of usability, to give the hw_ncipher.c a static lock, which is part
707 NOTE: This is for the 0.9.7 series ONLY. This hack will never
708 appear in 0.9.8 or later. We EXPECT application authors to have
709 dealt properly with this when 0.9.8 is released (unless we actually
710 make such changes in the libcrypto locking code that changes will
711 have to be made anyway).
714 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
715 octets have been read, EOF or an error occurs. Without this change
716 some truncated ASN1 structures will not produce an error.
719 *) Disable Heimdal support, since it hasn't been fully implemented.
720 Still give the possibility to force the use of Heimdal, but with
721 warnings and a request that patches get sent to openssl-dev.
724 *) Add the VC-CE target, introduce the WINCE sysname, and add
725 INSTALL.WCE and appropriate conditionals to make it build.
726 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
728 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
729 cygssl-x.y.z.dll, where x, y and z are the major, minor and
730 edit numbers of the version.
731 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
733 *) Introduce safe string copy and catenation functions
734 (BUF_strlcpy() and BUF_strlcat()).
735 [Ben Laurie (CHATS) and Richard Levitte]
737 *) Avoid using fixed-size buffers for one-line DNs.
740 *) Add BUF_MEM_grow_clean() to avoid information leakage when
741 resizing buffers containing secrets, and use where appropriate.
744 *) Avoid using fixed size buffers for configuration file location.
747 *) Avoid filename truncation for various CA files.
750 *) Use sizeof in preference to magic numbers.
753 *) Avoid filename truncation in cert requests.
756 *) Add assertions to check for (supposedly impossible) buffer
760 *) Don't cache truncated DNS entries in the local cache (this could
761 potentially lead to a spoofing attack).
764 *) Fix various buffers to be large enough for hex/decimal
765 representations in a platform independent manner.
768 *) Add CRYPTO_realloc_clean() to avoid information leakage when
769 resizing buffers containing secrets, and use where appropriate.
772 *) Add BIO_indent() to avoid much slightly worrying code to do
776 *) Convert sprintf()/BIO_puts() to BIO_printf().
779 *) buffer_gets() could terminate with the buffer only half
783 *) Add assertions to prevent user-supplied crypto functions from
784 overflowing internal buffers by having large block sizes, etc.
787 *) New OPENSSL_assert() macro (similar to assert(), but enabled
791 *) Eliminate unused copy of key in RC4.
794 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
797 *) Fix off-by-one error in EGD path.
800 *) If RANDFILE path is too long, ignore instead of truncating.
803 *) Eliminate unused and incorrectly sized X.509 structure
807 *) Eliminate unused and dangerous function knumber().
810 *) Eliminate unused and dangerous structure, KSSL_ERR.
813 *) Protect against overlong session ID context length in an encoded
814 session object. Since these are local, this does not appear to be
818 *) Change from security patch (see 0.9.6e below) that did not affect
819 the 0.9.6 release series:
821 Remote buffer overflow in SSL3 protocol - an attacker could
822 supply an oversized master key in Kerberos-enabled versions.
826 *) Change the SSL kerb5 codes to match RFC 2712.
829 *) Make -nameopt work fully for req and add -reqopt switch.
830 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
832 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
833 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
835 *) Make sure tests can be performed even if the corresponding algorithms
836 have been removed entirely. This was also the last step to make
837 OpenSSL compilable with DJGPP under all reasonable conditions.
838 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
840 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
841 to allow version independent disabling of normally unselected ciphers,
842 which may be activated as a side-effect of selecting a single cipher.
844 (E.g., cipher list string "RSA" enables ciphersuites that are left
845 out of "ALL" because they do not provide symmetric encryption.
846 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
847 [Lutz Jaenicke, Bodo Moeller]
849 *) Add appropriate support for separate platform-dependent build
850 directories. The recommended way to make a platform-dependent
851 build directory is the following (tested on Linux), maybe with
854 # Place yourself outside of the OpenSSL source tree. In
855 # this example, the environment variable OPENSSL_SOURCE
856 # is assumed to contain the absolute OpenSSL source directory.
857 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
858 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
859 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
860 mkdir -p `dirname $F`
861 ln -s $OPENSSL_SOURCE/$F $F
864 To be absolutely sure not to disturb the source tree, a "make clean"
865 is a good thing. If it isn't successfull, don't worry about it,
866 it probably means the source directory is very clean.
869 *) Make sure any ENGINE control commands make local copies of string
870 pointers passed to them whenever necessary. Otherwise it is possible
871 the caller may have overwritten (or deallocated) the original string
872 data when a later ENGINE operation tries to use the stored values.
873 [Götz Babin-Ebell <babinebell@trustcenter.de>]
875 *) Improve diagnostics in file reading and command-line digests.
876 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
878 *) Add AES modes CFB and OFB to the object database. Correct an
879 error in AES-CFB decryption.
882 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
883 allows existing EVP_CIPHER_CTX structures to be reused after
884 calling EVP_*Final(). This behaviour is used by encryption
885 BIOs and some applications. This has the side effect that
886 applications must explicitly clean up cipher contexts with
887 EVP_CIPHER_CTX_cleanup() or they will leak memory.
890 *) Check the values of dna and dnb in bn_mul_recursive before calling
891 bn_mul_comba (a non zero value means the a or b arrays do not contain
892 n2 elements) and fallback to bn_mul_normal if either is not zero.
895 *) Fix escaping of non-ASCII characters when using the -subj option
896 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
899 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
900 form for "surname", serialNumber has no short form.
901 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
902 therefore remove "mail" short name for "internet 7".
903 The OID for unique identifiers in X509 certificates is
904 x500UniqueIdentifier, not uniqueIdentifier.
905 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
908 *) Add an "init" command to the ENGINE config module and auto initialize
909 ENGINEs. Without any "init" command the ENGINE will be initialized
910 after all ctrl commands have been executed on it. If init=1 the
911 ENGINE is initailized at that point (ctrls before that point are run
912 on the uninitialized ENGINE and after on the initialized one). If
913 init=0 then the ENGINE will not be iniatialized at all.
916 *) Fix the 'app_verify_callback' interface so that the user-defined
917 argument is actually passed to the callback: In the
918 SSL_CTX_set_cert_verify_callback() prototype, the callback
919 declaration has been changed from
922 int (*cb)(X509_STORE_CTX *,void *);
923 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
924 i=s->ctx->app_verify_callback(&ctx)
925 has been changed into
926 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
928 To update applications using SSL_CTX_set_cert_verify_callback(),
929 a dummy argument can be added to their callback functions.
930 [D. K. Smetters <smetters@parc.xerox.com>]
932 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
933 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
935 *) Add and OPENSSL_LOAD_CONF define which will cause
936 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
937 This allows older applications to transparently support certain
938 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
939 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
940 load the config file and OPENSSL_add_all_algorithms_conf() which will
941 always load it have also been added.
944 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
945 Adjust NIDs and EVP layer.
946 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
948 *) Config modules support in openssl utility.
950 Most commands now load modules from the config file,
951 though in a few (such as version) this isn't done
952 because it couldn't be used for anything.
954 In the case of ca and req the config file used is
955 the same as the utility itself: that is the -config
956 command line option can be used to specify an
960 *) Move default behaviour from OPENSSL_config(). If appname is NULL
961 use "openssl_conf" if filename is NULL use default openssl config file.
964 *) Add an argument to OPENSSL_config() to allow the use of an alternative
965 config section name. Add a new flag to tolerate a missing config file
966 and move code to CONF_modules_load_file().
969 *) Support for crypto accelerator cards from Accelerated Encryption
970 Processing, www.aep.ie. (Use engine 'aep')
971 The support was copied from 0.9.6c [engine] and adapted/corrected
972 to work with the new engine framework.
973 [AEP Inc. and Richard Levitte]
975 *) Support for SureWare crypto accelerator cards from Baltimore
976 Technologies. (Use engine 'sureware')
977 The support was copied from 0.9.6c [engine] and adapted
978 to work with the new engine framework.
981 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
982 make the newer ENGINE framework commands for the CHIL engine work.
983 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
985 *) Make it possible to produce shared libraries on ReliantUNIX.
986 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
988 *) Add the configuration target debug-linux-ppro.
989 Make 'openssl rsa' use the general key loading routines
990 implemented in apps.c, and make those routines able to
991 handle the key format FORMAT_NETSCAPE and the variant
993 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
995 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
996 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
998 *) Add -keyform to rsautl, and document -engine.
999 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1001 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1002 BIO_R_NO_SUCH_FILE error code rather than the generic
1003 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1006 *) Add new functions
1008 ERR_peek_last_error_line
1009 ERR_peek_last_error_line_data.
1010 These are similar to
1013 ERR_peek_error_line_data,
1014 but report on the latest error recorded rather than the first one
1015 still in the error queue.
1016 [Ben Laurie, Bodo Moeller]
1018 *) default_algorithms option in ENGINE config module. This allows things
1020 default_algorithms = ALL
1021 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1024 *) Prelminary ENGINE config module.
1027 *) New experimental application configuration code.
1030 *) Change the AES code to follow the same name structure as all other
1031 symmetric ciphers, and behave the same way. Move everything to
1032 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1033 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1035 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1036 [Ben Laurie and Theo de Raadt]
1038 *) Add option to output public keys in req command.
1039 [Massimiliano Pala madwolf@openca.org]
1041 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1042 (up to about 10% better than before for P-192 and P-224).
1045 *) New functions/macros
1047 SSL_CTX_set_msg_callback(ctx, cb)
1048 SSL_CTX_set_msg_callback_arg(ctx, arg)
1049 SSL_set_msg_callback(ssl, cb)
1050 SSL_set_msg_callback_arg(ssl, arg)
1052 to request calling a callback function
1054 void cb(int write_p, int version, int content_type,
1055 const void *buf, size_t len, SSL *ssl, void *arg)
1057 whenever a protocol message has been completely received
1058 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1059 protocol version according to which the SSL library interprets
1060 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1061 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1062 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1063 specification (change_cipher_spec(20), alert(21), handshake(22)).
1064 'buf' and 'len' point to the actual message, 'ssl' to the
1065 SSL object, and 'arg' is the application-defined value set by
1066 SSL[_CTX]_set_msg_callback_arg().
1068 'openssl s_client' and 'openssl s_server' have new '-msg' options
1069 to enable a callback that displays all protocol messages.
1072 *) Change the shared library support so shared libraries are built as
1073 soon as the corresponding static library is finished, and thereby get
1074 openssl and the test programs linked against the shared library.
1075 This still only happens when the keyword "shard" has been given to
1076 the configuration scripts.
1078 NOTE: shared library support is still an experimental thing, and
1079 backward binary compatibility is still not guaranteed.
1080 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1082 *) Add support for Subject Information Access extension.
1083 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1085 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1086 additional bytes when new memory had to be allocated, not just
1087 when reusing an existing buffer.
1090 *) New command line and configuration option 'utf8' for the req command.
1091 This allows field values to be specified as UTF8 strings.
1094 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1095 runs for the former and machine-readable output for the latter.
1098 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1099 of the e-mail address in the DN (i.e., it will go into a certificate
1100 extension only). The new configuration file option 'email_in_dn = no'
1101 has the same effect.
1102 [Massimiliano Pala madwolf@openca.org]
1104 *) Change all functions with names starting with des_ to be starting
1105 with DES_ instead. Add wrappers that are compatible with libdes,
1106 but are named _ossl_old_des_*. Finally, add macros that map the
1107 des_* symbols to the corresponding _ossl_old_des_* if libdes
1108 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1109 desired, the des_* symbols will be mapped to DES_*, with one
1112 Since we provide two compatibility mappings, the user needs to
1113 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1114 compatibility is desired. The default (i.e., when that macro
1115 isn't defined) is OpenSSL 0.9.6c compatibility.
1117 There are also macros that enable and disable the support of old
1118 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1119 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1120 are defined, the default will apply: to support the old des routines.
1122 In either case, one must include openssl/des.h to get the correct
1123 definitions. Do not try to just include openssl/des_old.h, that
1126 NOTE: This is a major break of an old API into a new one. Software
1127 authors are encouraged to switch to the DES_ style functions. Some
1128 time in the future, des_old.h and the libdes compatibility functions
1129 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1130 default), and then completely removed.
1133 *) Test for certificates which contain unsupported critical extensions.
1134 If such a certificate is found during a verify operation it is
1135 rejected by default: this behaviour can be overridden by either
1136 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1137 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1138 X509_supported_extension() has also been added which returns 1 if a
1139 particular extension is supported.
1142 *) Modify the behaviour of EVP cipher functions in similar way to digests
1143 to retain compatibility with existing code.
1146 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1147 compatibility with existing code. In particular the 'ctx' parameter does
1148 not have to be to be initialized before the call to EVP_DigestInit() and
1149 it is tidied up after a call to EVP_DigestFinal(). New function
1150 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1151 EVP_MD_CTX_copy() changed to not require the destination to be
1152 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1153 requires the destination to be valid.
1155 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1156 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1159 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1160 so that complete 'Handshake' protocol structures are kept in memory
1161 instead of overwriting 'msg_type' and 'length' with 'body' data.
1164 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1165 [Massimo Santin via Richard Levitte]
1167 *) Major restructuring to the underlying ENGINE code. This includes
1168 reduction of linker bloat, separation of pure "ENGINE" manipulation
1169 (initialisation, etc) from functionality dealing with implementations
1170 of specific crypto iterfaces. This change also introduces integrated
1171 support for symmetric ciphers and digest implementations - so ENGINEs
1172 can now accelerate these by providing EVP_CIPHER and EVP_MD
1173 implementations of their own. This is detailed in crypto/engine/README
1174 as it couldn't be adequately described here. However, there are a few
1175 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1176 were changed in the original introduction of ENGINE code have now
1177 reverted back - the hooking from this code to ENGINE is now a good
1178 deal more passive and at run-time, operations deal directly with
1179 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1180 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1181 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1182 they were not being used by the framework as there is no concept of a
1183 BIGNUM_METHOD and they could not be generalised to the new
1184 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1185 ENGINE_cpy() has been removed as it cannot be consistently defined in
1189 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1192 *) Change mkdef.pl to sort symbols that get the same entry number,
1193 and make sure the automatically generated functions ERR_load_*
1194 become part of libeay.num as well.
1197 *) New function SSL_renegotiate_pending(). This returns true once
1198 renegotiation has been requested (either SSL_renegotiate() call
1199 or HelloRequest/ClientHello receveived from the peer) and becomes
1200 false once a handshake has been completed.
1201 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1202 sends a HelloRequest, but does not ensure that a handshake takes
1203 place. SSL_renegotiate_pending() is useful for checking if the
1204 client has followed the request.)
1207 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1208 By default, clients may request session resumption even during
1209 renegotiation (if session ID contexts permit); with this option,
1210 session resumption is possible only in the first handshake.
1212 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1213 more bits available for options that should not be part of
1214 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1217 *) Add some demos for certificate and certificate request creation.
1220 *) Make maximum certificate chain size accepted from the peer application
1221 settable (SSL*_get/set_max_cert_list()), as proposed by
1222 "Douglas E. Engert" <deengert@anl.gov>.
1225 *) Add support for shared libraries for Unixware-7
1226 (Boyd Lynn Gerber <gerberb@zenez.com>).
1229 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1230 be done prior to destruction. Use this to unload error strings from
1231 ENGINEs that load their own error strings. NB: This adds two new API
1232 functions to "get" and "set" this destroy handler in an ENGINE.
1235 *) Alter all existing ENGINE implementations (except "openssl" and
1236 "openbsd") to dynamically instantiate their own error strings. This
1237 makes them more flexible to be built both as statically-linked ENGINEs
1238 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1239 Also, add stub code to each that makes building them as self-contained
1240 shared-libraries easier (see README.ENGINE).
1243 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1244 implementations into applications that are completely implemented in
1245 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1246 commands that can be used to configure what shared-library to load and
1247 to control aspects of the way it is handled. Also, made an update to
1248 the README.ENGINE file that brings its information up-to-date and
1249 provides some information and instructions on the "dynamic" ENGINE
1250 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1253 *) Make it possible to unload ranges of ERR strings with a new
1254 "ERR_unload_strings" function.
1257 *) Add a copy() function to EVP_MD.
1260 *) Make EVP_MD routines take a context pointer instead of just the
1261 md_data void pointer.
1264 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1265 that the digest can only process a single chunk of data
1266 (typically because it is provided by a piece of
1267 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1268 is only going to provide a single chunk of data, and hence the
1269 framework needn't accumulate the data for oneshot drivers.
1272 *) As with "ERR", make it possible to replace the underlying "ex_data"
1273 functions. This change also alters the storage and management of global
1274 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1275 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1276 index counters. The API functions that use this state have been changed
1277 to take a "class_index" rather than pointers to the class's local STACK
1278 and counter, and there is now an API function to dynamically create new
1279 classes. This centralisation allows us to (a) plug a lot of the
1280 thread-safety problems that existed, and (b) makes it possible to clean
1281 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1282 such data would previously have always leaked in application code and
1283 workarounds were in place to make the memory debugging turn a blind eye
1284 to it. Application code that doesn't use this new function will still
1285 leak as before, but their memory debugging output will announce it now
1286 rather than letting it slide.
1288 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1289 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1290 has a return value to indicate success or failure.
1293 *) Make it possible to replace the underlying "ERR" functions such that the
1294 global state (2 LHASH tables and 2 locks) is only used by the "default"
1295 implementation. This change also adds two functions to "get" and "set"
1296 the implementation prior to it being automatically set the first time
1297 any other ERR function takes place. Ie. an application can call "get",
1298 pass the return value to a module it has just loaded, and that module
1299 can call its own "set" function using that value. This means the
1300 module's "ERR" operations will use (and modify) the error state in the
1301 application and not in its own statically linked copy of OpenSSL code.
1304 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1305 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1306 the operation, and provides a more encapsulated way for external code
1307 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1308 to use these functions rather than manually incrementing the counts.
1310 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1313 *) Add EVP test program.
1316 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1319 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1320 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1321 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1322 These allow a CRL to be built without having to access X509_CRL fields
1323 directly. Modify 'ca' application to use new functions.
1326 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1327 bug workarounds. Rollback attack detection is a security feature.
1328 The problem will only arise on OpenSSL servers when TLSv1 is not
1329 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1330 Software authors not wanting to support TLSv1 will have special reasons
1331 for their choice and can explicitly enable this option.
1332 [Bodo Moeller, Lutz Jaenicke]
1334 *) Rationalise EVP so it can be extended: don't include a union of
1335 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1336 (similar to those existing for EVP_CIPHER_CTX).
1341 EVP_MD_CTX_init(&md); /* new function call */
1342 EVP_DigestInit(&md, EVP_sha1());
1343 EVP_DigestUpdate(&md, in, len);
1344 EVP_DigestFinal(&md, out, NULL);
1345 EVP_MD_CTX_cleanup(&md); /* new function call */
1349 *) Make DES key schedule conform to the usual scheme, as well as
1350 correcting its structure. This means that calls to DES functions
1351 now have to pass a pointer to a des_key_schedule instead of a
1352 plain des_key_schedule (which was actually always a pointer
1355 des_key_schedule ks;
1357 des_set_key_checked(..., &ks);
1358 des_ncbc_encrypt(..., &ks, ...);
1360 (Note that a later change renames 'des_...' into 'DES_...'.)
1363 *) Initial reduction of linker bloat: the use of some functions, such as
1364 PEM causes large amounts of unused functions to be linked in due to
1365 poor organisation. For example pem_all.c contains every PEM function
1366 which has a knock on effect of linking in large amounts of (unused)
1367 ASN1 code. Grouping together similar functions and splitting unrelated
1368 functions prevents this.
1371 *) Cleanup of EVP macros.
1374 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1375 correct _ecb suffix.
1378 *) Add initial OCSP responder support to ocsp application. The
1379 revocation information is handled using the text based index
1380 use by the ca application. The responder can either handle
1381 requests generated internally, supplied in files (for example
1382 via a CGI script) or using an internal minimal server.
1385 *) Add configuration choices to get zlib compression for TLS.
1388 *) Changes to Kerberos SSL for RFC 2712 compliance:
1389 1. Implemented real KerberosWrapper, instead of just using
1390 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1391 2. Implemented optional authenticator field of KerberosWrapper.
1393 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1394 and authenticator structs; see crypto/krb5/.
1396 Generalized Kerberos calls to support multiple Kerberos libraries.
1397 [Vern Staats <staatsvr@asc.hpc.mil>,
1398 Jeffrey Altman <jaltman@columbia.edu>
1399 via Richard Levitte]
1401 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1402 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1403 values for each of the key sizes rather than having just
1404 parameters (and 'speed' generating keys each time).
1407 *) Speed up EVP routines.
1410 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1411 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1412 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1413 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1415 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1416 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1417 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1420 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1422 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1425 *) Added the OS2-EMX target.
1426 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1428 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1429 to support NCONF routines in extension code. New function CONF_set_nconf()
1430 to allow functions which take an NCONF to also handle the old LHASH
1431 structure: this means that the old CONF compatible routines can be
1432 retained (in particular wrt extensions) without having to duplicate the
1433 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1436 *) Enhance the general user interface with mechanisms for inner control
1437 and with possibilities to have yes/no kind of prompts.
1440 *) Change all calls to low level digest routines in the library and
1441 applications to use EVP. Add missing calls to HMAC_cleanup() and
1442 don't assume HMAC_CTX can be copied using memcpy().
1443 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1445 *) Add the possibility to control engines through control names but with
1446 arbitrary arguments instead of just a string.
1447 Change the key loaders to take a UI_METHOD instead of a callback
1448 function pointer. NOTE: this breaks binary compatibility with earlier
1449 versions of OpenSSL [engine].
1450 Adapt the nCipher code for these new conditions and add a card insertion
1454 *) Enhance the general user interface with mechanisms to better support
1455 dialog box interfaces, application-defined prompts, the possibility
1456 to use defaults (for example default passwords from somewhere else)
1457 and interrupts/cancellations.
1460 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1461 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1464 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1465 tidy up some unnecessarily weird code in 'sk_new()').
1466 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1468 *) Change the key loading routines for ENGINEs to use the same kind
1469 callback (pem_password_cb) as all other routines that need this
1473 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1474 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1475 than this minimum value is recommended.
1478 *) New random seeder for OpenVMS, using the system process statistics
1479 that are easily reachable.
1482 *) Windows apparently can't transparently handle global
1483 variables defined in DLLs. Initialisations such as:
1485 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1487 wont compile. This is used by the any applications that need to
1488 declare their own ASN1 modules. This was fixed by adding the option
1489 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1490 needed for static libraries under Win32.
1493 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1494 setting of purpose and trust fields. New X509_STORE trust and
1495 purpose functions and tidy up setting in other SSL functions.
1498 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1499 structure. These are inherited by X509_STORE_CTX when it is
1500 initialised. This allows various defaults to be set in the
1501 X509_STORE structure (such as flags for CRL checking and custom
1502 purpose or trust settings) for functions which only use X509_STORE_CTX
1503 internally such as S/MIME.
1505 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1506 trust settings if they are not set in X509_STORE. This allows X509_STORE
1507 purposes and trust (in S/MIME for example) to override any set by default.
1509 Add command line options for CRL checking to smime, s_client and s_server
1513 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1514 are set then the CRL is looked up in the X509_STORE structure and
1515 its validity and signature checked, then if the certificate is found
1516 in the CRL the verify fails with a revoked error.
1518 Various new CRL related callbacks added to X509_STORE_CTX structure.
1520 Command line options added to 'verify' application to support this.
1522 This needs some additional work, such as being able to handle multiple
1523 CRLs with different times, extension based lookup (rather than just
1524 by subject name) and ultimately more complete V2 CRL extension
1528 *) Add a general user interface API (crypto/ui/). This is designed
1529 to replace things like des_read_password and friends (backward
1530 compatibility functions using this new API are provided).
1531 The purpose is to remove prompting functions from the DES code
1532 section as well as provide for prompting through dialog boxes in
1533 a window system and the like.
1536 *) Add "ex_data" support to ENGINE so implementations can add state at a
1537 per-structure level rather than having to store it globally.
1540 *) Make it possible for ENGINE structures to be copied when retrieved by
1541 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1542 This causes the "original" ENGINE structure to act like a template,
1543 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1544 operational state can be localised to each ENGINE structure, despite the
1545 fact they all share the same "methods". New ENGINE structures returned in
1546 this case have no functional references and the return value is the single
1547 structural reference. This matches the single structural reference returned
1548 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1552 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1553 needs to match any other type at all we need to manually clear the
1557 *) Changes to the "openssl engine" utility to include;
1558 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1559 about an ENGINE's available control commands.
1560 - executing control commands from command line arguments using the
1561 '-pre' and '-post' switches. '-post' is only used if '-t' is
1562 specified and the ENGINE is successfully initialised. The syntax for
1563 the individual commands are colon-separated, for example;
1564 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1567 *) New dynamic control command support for ENGINEs. ENGINEs can now
1568 declare their own commands (numbers), names (strings), descriptions,
1569 and input types for run-time discovery by calling applications. A
1570 subset of these commands are implicitly classed as "executable"
1571 depending on their input type, and only these can be invoked through
1572 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1573 can be based on user input, config files, etc). The distinction is
1574 that "executable" commands cannot return anything other than a boolean
1575 result and can only support numeric or string input, whereas some
1576 discoverable commands may only be for direct use through
1577 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1578 pointers, or other custom uses. The "executable" commands are to
1579 support parameterisations of ENGINE behaviour that can be
1580 unambiguously defined by ENGINEs and used consistently across any
1581 OpenSSL-based application. Commands have been added to all the
1582 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1583 control over shared-library paths without source code alterations.
1586 *) Changed all ENGINE implementations to dynamically allocate their
1587 ENGINEs rather than declaring them statically. Apart from this being
1588 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1589 this also allows the implementations to compile without using the
1590 internal engine_int.h header.
1593 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
1594 'const' value. Any code that should be able to modify a RAND_METHOD
1595 should already have non-const pointers to it (ie. they should only
1596 modify their own ones).
1599 *) Made a variety of little tweaks to the ENGINE code.
1600 - "atalla" and "ubsec" string definitions were moved from header files
1601 to C code. "nuron" string definitions were placed in variables
1602 rather than hard-coded - allowing parameterisation of these values
1603 later on via ctrl() commands.
1604 - Removed unused "#if 0"'d code.
1605 - Fixed engine list iteration code so it uses ENGINE_free() to release
1606 structural references.
1607 - Constified the RAND_METHOD element of ENGINE structures.
1608 - Constified various get/set functions as appropriate and added
1609 missing functions (including a catch-all ENGINE_cpy that duplicates
1610 all ENGINE values onto a new ENGINE except reference counts/state).
1611 - Removed NULL parameter checks in get/set functions. Setting a method
1612 or function to NULL is a way of cancelling out a previously set
1613 value. Passing a NULL ENGINE parameter is just plain stupid anyway
1614 and doesn't justify the extra error symbols and code.
1615 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
1616 flags from engine_int.h to engine.h.
1617 - Changed prototypes for ENGINE handler functions (init(), finish(),
1618 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
1621 *) Implement binary inversion algorithm for BN_mod_inverse in addition
1622 to the algorithm using long division. The binary algorithm can be
1623 used only if the modulus is odd. On 32-bit systems, it is faster
1624 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
1625 roughly 5-15% for 256-bit moduli), so we use it only for moduli
1626 up to 450 bits. In 64-bit environments, the binary algorithm
1627 appears to be advantageous for much longer moduli; here we use it
1628 for moduli up to 2048 bits.
1631 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
1632 could not support the combine flag in choice fields.
1635 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
1636 extensions from a certificate request to the certificate.
1639 *) Allow multiple 'certopt' and 'nameopt' options to be separated
1640 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
1641 file: this allows the display of the certificate about to be
1642 signed to be customised, to allow certain fields to be included
1643 or excluded and extension details. The old system didn't display
1644 multicharacter strings properly, omitted fields not in the policy
1645 and couldn't display additional details such as extensions.
1648 *) Function EC_POINTs_mul for multiple scalar multiplication
1649 of an arbitrary number of elliptic curve points
1650 \sum scalars[i]*points[i],
1651 optionally including the generator defined for the EC_GROUP:
1652 scalar*generator + \sum scalars[i]*points[i].
1654 EC_POINT_mul is a simple wrapper function for the typical case
1655 that the point list has just one item (besides the optional
1659 *) First EC_METHODs for curves over GF(p):
1661 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
1662 operations and provides various method functions that can also
1663 operate with faster implementations of modular arithmetic.
1665 EC_GFp_mont_method() reuses most functions that are part of
1666 EC_GFp_simple_method, but uses Montgomery arithmetic.
1668 [Bodo Moeller; point addition and point doubling
1669 implementation directly derived from source code provided by
1670 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
1672 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
1673 crypto/ec/ec_lib.c):
1675 Curves are EC_GROUP objects (with an optional group generator)
1676 based on EC_METHODs that are built into the library.
1678 Points are EC_POINT objects based on EC_GROUP objects.
1680 Most of the framework would be able to handle curves over arbitrary
1681 finite fields, but as there are no obvious types for fields other
1682 than GF(p), some functions are limited to that for now.
1685 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
1686 that the file contains a complete HTTP response.
1689 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
1690 change the def and num file printf format specifier from "%-40sXXX"
1691 to "%-39s XXX". The latter will always guarantee a space after the
1692 field while the former will cause them to run together if the field
1693 is 40 of more characters long.
1696 *) Constify the cipher and digest 'method' functions and structures
1697 and modify related functions to take constant EVP_MD and EVP_CIPHER
1701 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
1702 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
1705 *) Modify EVP_Digest*() routines so they now return values. Although the
1706 internal software routines can never fail additional hardware versions
1710 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
1712 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
1713 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
1716 ERR_R_NESTED_ASN1_ERROR
1718 ERR_R_MISSING_ASN1_EOS
1719 were 4 .. 9, conflicting with
1720 ERR_LIB_RSA (= ERR_R_RSA_LIB)
1722 ERR_LIB_PEM (= ERR_R_PEM_LIB).
1723 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
1725 Add new error code 'ERR_R_INTERNAL_ERROR'.
1728 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
1732 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
1733 sets the subject name for a new request or supersedes the
1734 subject name in a given request. Formats that can be parsed are
1735 'CN=Some Name, OU=myOU, C=IT'
1737 'CN=Some Name/OU=myOU/C=IT'.
1739 Add options '-batch' and '-verbose' to 'openssl req'.
1740 [Massimiliano Pala <madwolf@hackmasters.net>]
1742 *) Introduce the possibility to access global variables through
1743 functions on platform were that's the best way to handle exporting
1744 global variables in shared libraries. To enable this functionality,
1745 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
1746 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
1747 is normally done by Configure or something similar).
1749 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
1750 in the source file (foo.c) like this:
1752 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
1753 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
1755 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
1756 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
1758 OPENSSL_DECLARE_GLOBAL(int,foo);
1759 #define foo OPENSSL_GLOBAL_REF(foo)
1760 OPENSSL_DECLARE_GLOBAL(double,bar);
1761 #define bar OPENSSL_GLOBAL_REF(bar)
1763 The #defines are very important, and therefore so is including the
1764 header file everywhere where the defined globals are used.
1766 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
1767 of ASN.1 items, but that structure is a bit different.
1769 The largest change is in util/mkdef.pl which has been enhanced with
1770 better and easier to understand logic to choose which symbols should
1771 go into the Windows .def files as well as a number of fixes and code
1772 cleanup (among others, algorithm keywords are now sorted
1773 lexicographically to avoid constant rewrites).
1776 *) In BN_div() keep a copy of the sign of 'num' before writing the
1777 result to 'rm' because if rm==num the value will be overwritten
1778 and produce the wrong result if 'num' is negative: this caused
1779 problems with BN_mod() and BN_nnmod().
1782 *) Function OCSP_request_verify(). This checks the signature on an
1783 OCSP request and verifies the signer certificate. The signer
1784 certificate is just checked for a generic purpose and OCSP request
1788 *) Add OCSP_check_validity() function to check the validity of OCSP
1789 responses. OCSP responses are prepared in real time and may only
1790 be a few seconds old. Simply checking that the current time lies
1791 between thisUpdate and nextUpdate max reject otherwise valid responses
1792 caused by either OCSP responder or client clock inaccuracy. Instead
1793 we allow thisUpdate and nextUpdate to fall within a certain period of
1794 the current time. The age of the response can also optionally be
1795 checked. Two new options -validity_period and -status_age added to
1799 *) If signature or public key algorithm is unrecognized print out its
1800 OID rather that just UNKNOWN.
1803 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
1804 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
1805 ID to be generated from the issuer certificate alone which can then be
1806 passed to OCSP_id_issuer_cmp().
1809 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
1810 ASN1 modules to export functions returning ASN1_ITEM pointers
1811 instead of the ASN1_ITEM structures themselves. This adds several
1812 new macros which allow the underlying ASN1 function/structure to
1813 be accessed transparently. As a result code should not use ASN1_ITEM
1814 references directly (such as &X509_it) but instead use the relevant
1815 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
1816 use of the new ASN1 code on platforms where exporting structures
1817 is problematical (for example in shared libraries) but exporting
1818 functions returning pointers to structures is not.
1821 *) Add support for overriding the generation of SSL/TLS session IDs.
1822 These callbacks can be registered either in an SSL_CTX or per SSL.
1823 The purpose of this is to allow applications to control, if they wish,
1824 the arbitrary values chosen for use as session IDs, particularly as it
1825 can be useful for session caching in multiple-server environments. A
1826 command-line switch for testing this (and any client code that wishes
1827 to use such a feature) has been added to "s_server".
1828 [Geoff Thorpe, Lutz Jaenicke]
1830 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
1831 of the form '#if defined(...) || defined(...) || ...' and
1832 '#if !defined(...) && !defined(...) && ...'. This also avoids
1833 the growing number of special cases it was previously handling.
1836 *) Make all configuration macros available for application by making
1837 sure they are available in opensslconf.h, by giving them names starting
1838 with "OPENSSL_" to avoid conflicts with other packages and by making
1839 sure e_os2.h will cover all platform-specific cases together with
1841 Additionally, it is now possible to define configuration/platform-
1842 specific names (called "system identities"). In the C code, these
1843 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
1844 macro with the name beginning with "OPENSSL_SYS_", which is determined
1845 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
1849 *) New option -set_serial to 'req' and 'x509' this allows the serial
1850 number to use to be specified on the command line. Previously self
1851 signed certificates were hard coded with serial number 0 and the
1852 CA options of 'x509' had to use a serial number in a file which was
1856 *) New options to 'ca' utility to support V2 CRL entry extensions.
1857 Currently CRL reason, invalidity date and hold instruction are
1858 supported. Add new CRL extensions to V3 code and some new objects.
1861 *) New function EVP_CIPHER_CTX_set_padding() this is used to
1862 disable standard block padding (aka PKCS#5 padding) in the EVP
1863 API, which was previously mandatory. This means that the data is
1864 not padded in any way and so the total length much be a multiple
1865 of the block size, otherwise an error occurs.
1868 *) Initial (incomplete) OCSP SSL support.
1871 *) New function OCSP_parse_url(). This splits up a URL into its host,
1872 port and path components: primarily to parse OCSP URLs. New -url
1873 option to ocsp utility.
1876 *) New nonce behavior. The return value of OCSP_check_nonce() now
1877 reflects the various checks performed. Applications can decide
1878 whether to tolerate certain situations such as an absent nonce
1879 in a response when one was present in a request: the ocsp application
1880 just prints out a warning. New function OCSP_add1_basic_nonce()
1881 this is to allow responders to include a nonce in a response even if
1882 the request is nonce-less.
1885 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
1886 skipped when using openssl x509 multiple times on a single input file,
1887 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
1890 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
1891 set string type: to handle setting ASN1_TIME structures. Fix ca
1892 utility to correctly initialize revocation date of CRLs.
1895 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
1896 the clients preferred ciphersuites and rather use its own preferences.
1897 Should help to work around M$ SGC (Server Gated Cryptography) bug in
1898 Internet Explorer by ensuring unchanged hash method during stepup.
1899 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
1902 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
1903 to aes and add a new 'exist' option to print out symbols that don't
1907 *) Additional options to ocsp utility to allow flags to be set and
1908 additional certificates supplied.
1911 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
1912 OCSP client a number of certificate to only verify the response
1916 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
1917 handle the new API. Currently only ECB, CBC modes supported. Add new
1920 Add TLS AES ciphersuites as described in RFC3268, "Advanced
1921 Encryption Standard (AES) Ciphersuites for Transport Layer
1922 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
1923 not enabled by default and were not part of the "ALL" ciphersuite
1924 alias because they were not yet official; they could be
1925 explicitly requested by specifying the "AESdraft" ciphersuite
1926 group alias. In the final release of OpenSSL 0.9.7, the group
1927 alias is called "AES" and is part of "ALL".)
1928 [Ben Laurie, Steve Henson, Bodo Moeller]
1930 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
1931 request to response.
1934 *) Functions for OCSP responders. OCSP_request_onereq_count(),
1935 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
1936 extract information from a certificate request. OCSP_response_create()
1937 creates a response and optionally adds a basic response structure.
1938 OCSP_basic_add1_status() adds a complete single response to a basic
1939 response and returns the OCSP_SINGLERESP structure just added (to allow
1940 extensions to be included for example). OCSP_basic_add1_cert() adds a
1941 certificate to a basic response and OCSP_basic_sign() signs a basic
1942 response with various flags. New helper functions ASN1_TIME_check()
1943 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
1944 (converts ASN1_TIME to GeneralizedTime).
1947 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
1948 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
1949 structure from a certificate. X509_pubkey_digest() digests the public_key
1950 contents: this is used in various key identifiers.
1953 *) Make sk_sort() tolerate a NULL argument.
1954 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
1956 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
1957 passed by the function are trusted implicitly. If any of them signed the
1958 response then it is assumed to be valid and is not verified.
1961 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
1962 to data. This was previously part of the PKCS7 ASN1 code. This
1963 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
1964 [Steve Henson, reported by Kenneth R. Robinette
1965 <support@securenetterm.com>]
1967 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
1968 routines: without these tracing memory leaks is very painful.
1969 Fix leaks in PKCS12 and PKCS7 routines.
1972 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
1973 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
1974 effectively meant GeneralizedTime would never be used. Now it
1975 is initialised to -1 but X509_time_adj() now has to check the value
1976 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
1977 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
1978 [Steve Henson, reported by Kenneth R. Robinette
1979 <support@securenetterm.com>]
1981 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
1982 result in a zero length in the ASN1_INTEGER structure which was
1983 not consistent with the structure when d2i_ASN1_INTEGER() was used
1984 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
1985 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
1986 where it did not print out a minus for negative ASN1_INTEGER.
1989 *) Add summary printout to ocsp utility. The various functions which
1990 convert status values to strings have been renamed to:
1991 OCSP_response_status_str(), OCSP_cert_status_str() and
1992 OCSP_crl_reason_str() and are no longer static. New options
1993 to verify nonce values and to disable verification. OCSP response
1994 printout format cleaned up.
1997 *) Add additional OCSP certificate checks. These are those specified
1998 in RFC2560. This consists of two separate checks: the CA of the
1999 certificate being checked must either be the OCSP signer certificate
2000 or the issuer of the OCSP signer certificate. In the latter case the
2001 OCSP signer certificate must contain the OCSP signing extended key
2002 usage. This check is performed by attempting to match the OCSP
2003 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2004 in the OCSP_CERTID structures of the response.
2007 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2008 and related routines. This uses the standard OpenSSL certificate
2009 verify routines to perform initial checks (just CA validity) and
2010 to obtain the certificate chain. Then additional checks will be
2011 performed on the chain. Currently the root CA is checked to see
2012 if it is explicitly trusted for OCSP signing. This is used to set
2013 a root CA as a global signing root: that is any certificate that
2014 chains to that CA is an acceptable OCSP signing certificate.
2017 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2018 extensions from a separate configuration file.
2019 As when reading extensions from the main configuration file,
2020 the '-extensions ...' option may be used for specifying the
2022 [Massimiliano Pala <madwolf@comune.modena.it>]
2024 *) New OCSP utility. Allows OCSP requests to be generated or
2025 read. The request can be sent to a responder and the output
2026 parsed, outputed or printed in text form. Not complete yet:
2027 still needs to check the OCSP response validity.
2030 *) New subcommands for 'openssl ca':
2031 'openssl ca -status <serial>' prints the status of the cert with
2032 the given serial number (according to the index file).
2033 'openssl ca -updatedb' updates the expiry status of certificates
2035 [Massimiliano Pala <madwolf@comune.modena.it>]
2037 *) New '-newreq-nodes' command option to CA.pl. This is like
2038 '-newreq', but calls 'openssl req' with the '-nodes' option
2039 so that the resulting key is not encrypted.
2040 [Damien Miller <djm@mindrot.org>]
2042 *) New configuration for the GNU Hurd.
2043 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2045 *) Initial code to implement OCSP basic response verify. This
2046 is currently incomplete. Currently just finds the signer's
2047 certificate and verifies the signature on the response.
2050 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2051 value of OPENSSLDIR. This is available via the new '-d' option
2052 to 'openssl version', and is also included in 'openssl version -a'.
2055 *) Allowing defining memory allocation callbacks that will be given
2056 file name and line number information in additional arguments
2057 (a const char* and an int). The basic functionality remains, as
2058 well as the original possibility to just replace malloc(),
2059 realloc() and free() by functions that do not know about these
2060 additional arguments. To register and find out the current
2061 settings for extended allocation functions, the following
2062 functions are provided:
2064 CRYPTO_set_mem_ex_functions
2065 CRYPTO_set_locked_mem_ex_functions
2066 CRYPTO_get_mem_ex_functions
2067 CRYPTO_get_locked_mem_ex_functions
2069 These work the same way as CRYPTO_set_mem_functions and friends.
2070 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2071 extended allocation function is enabled.
2072 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2073 a conventional allocation function is enabled.
2074 [Richard Levitte, Bodo Moeller]
2076 *) Finish off removing the remaining LHASH function pointer casts.
2077 There should no longer be any prototype-casting required when using
2078 the LHASH abstraction, and any casts that remain are "bugs". See
2079 the callback types and macros at the head of lhash.h for details
2080 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2083 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2084 If /dev/[u]random devices are not available or do not return enough
2085 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2087 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2088 /etc/entropy will be queried once each in this sequence, quering stops
2089 when enough entropy was collected without querying more sockets.
2092 *) Change the Unix RAND_poll() variant to be able to poll several
2093 random devices, as specified by DEVRANDOM, until a sufficient amount
2094 of data has been collected. We spend at most 10 ms on each file
2095 (select timeout) and read in non-blocking mode. DEVRANDOM now
2096 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2097 (previously it was just the string "/dev/urandom"), so on typical
2098 platforms the 10 ms delay will never occur.
2099 Also separate out the Unix variant to its own file, rand_unix.c.
2100 For VMS, there's a currently-empty rand_vms.c.
2103 *) Move OCSP client related routines to ocsp_cl.c. These
2104 provide utility functions which an application needing
2105 to issue a request to an OCSP responder and analyse the
2106 response will typically need: as opposed to those which an
2107 OCSP responder itself would need which will be added later.
2109 OCSP_request_sign() signs an OCSP request with an API similar
2110 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2111 response. OCSP_response_get1_basic() extracts basic response
2112 from response. OCSP_resp_find_status(): finds and extracts status
2113 information from an OCSP_CERTID structure (which will be created
2114 when the request structure is built). These are built from lower
2115 level functions which work on OCSP_SINGLERESP structures but
2116 wont normally be used unless the application wishes to examine
2117 extensions in the OCSP response for example.
2119 Replace nonce routines with a pair of functions.
2120 OCSP_request_add1_nonce() adds a nonce value and optionally
2121 generates a random value. OCSP_check_nonce() checks the
2122 validity of the nonce in an OCSP response.
2125 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2126 This doesn't copy the supplied OCSP_CERTID and avoids the
2127 need to free up the newly created id. Change return type
2128 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2129 This can then be used to add extensions to the request.
2130 Deleted OCSP_request_new(), since most of its functionality
2131 is now in OCSP_REQUEST_new() (and the case insensitive name
2132 clash) apart from the ability to set the request name which
2133 will be added elsewhere.
2136 *) Update OCSP API. Remove obsolete extensions argument from
2137 various functions. Extensions are now handled using the new
2138 OCSP extension code. New simple OCSP HTTP function which
2139 can be used to send requests and parse the response.
2142 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2143 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2144 uses the special reorder version of SET OF to sort the attributes
2145 and reorder them to match the encoded order. This resolves a long
2146 standing problem: a verify on a PKCS7 structure just after signing
2147 it used to fail because the attribute order did not match the
2148 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2149 it uses the received order. This is necessary to tolerate some broken
2150 software that does not order SET OF. This is handled by encoding
2151 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2152 to produce the required SET OF.
2155 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2156 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2157 files to get correct declarations of the ASN.1 item variables.
2160 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2161 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2162 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2163 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2164 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2165 ASN1_ITEM and no wrapper functions.
2168 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2169 replace the old function pointer based I/O routines. Change most of
2170 the *_d2i_bio() and *_d2i_fp() functions to use these.
2173 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2174 lines, recognice more "algorithms" that can be deselected, and make
2175 it complain about algorithm deselection that isn't recognised.
2178 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2179 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2180 to use new functions. Add NO_ASN1_OLD which can be set to remove
2181 some old style ASN1 functions: this can be used to determine if old
2182 code will still work when these eventually go away.
2185 *) New extension functions for OCSP structures, these follow the
2186 same conventions as certificates and CRLs.
2189 *) New function X509V3_add1_i2d(). This automatically encodes and
2190 adds an extension. Its behaviour can be customised with various
2191 flags to append, replace or delete. Various wrappers added for
2192 certifcates and CRLs.
2195 *) Fix to avoid calling the underlying ASN1 print routine when
2196 an extension cannot be parsed. Correct a typo in the
2197 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2200 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2201 entries for variables.
2204 *) Add functionality to apps/openssl.c for detecting locking
2205 problems: As the program is single-threaded, all we have
2206 to do is register a locking callback using an array for
2207 storing which locks are currently held by the program.
2210 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2211 SSL_get_ex_data_X509_STORE_idx(), which is used in
2212 ssl_verify_cert_chain() and thus can be called at any time
2213 during TLS/SSL handshakes so that thread-safety is essential.
2214 Unfortunately, the ex_data design is not at all suited
2215 for multi-threaded use, so it probably should be abolished.
2218 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2219 [Broadcom, tweaked and integrated by Geoff Thorpe]
2221 *) Move common extension printing code to new function
2222 X509V3_print_extensions(). Reorganise OCSP print routines and
2223 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2226 *) New function X509_signature_print() to remove duplication in some
2230 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2231 set (this was treated exactly the same as SET OF previously). This
2232 is used to reorder the STACK representing the structure to match the
2233 encoding. This will be used to get round a problem where a PKCS7
2234 structure which was signed could not be verified because the STACK
2235 order did not reflect the encoded order.
2238 *) Reimplement the OCSP ASN1 module using the new code.
2241 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2242 for its ASN1 operations. The old style function pointers still exist
2243 for now but they will eventually go away.
2246 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2247 completely replaces the old ASN1 functionality with a table driven
2248 encoder and decoder which interprets an ASN1_ITEM structure describing
2249 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2250 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2251 has also been converted to the new form.
2254 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2255 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2256 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2257 for negative moduli.
2260 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2261 of not touching the result's sign bit.
2264 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2268 *) Changed the LHASH code to use prototypes for callbacks, and created
2269 macros to declare and implement thin (optionally static) functions
2270 that provide type-safety and avoid function pointer casting for the
2271 type-specific callbacks.
2274 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2276 [Veers Staats <staatsvr@asc.hpc.mil>,
2277 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2279 *) Reformat the FAQ so the different questions and answers can be divided
2280 in sections depending on the subject.
2283 *) Have the zlib compression code load ZLIB.DLL dynamically under
2287 *) New function BN_mod_sqrt for computing square roots modulo a prime
2288 (using the probabilistic Tonelli-Shanks algorithm unless
2289 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2290 be handled deterministically).
2291 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2293 *) Make BN_mod_inverse faster by explicitly handling small quotients
2294 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2295 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2298 *) New function BN_kronecker.
2301 *) Fix BN_gcd so that it works on negative inputs; the result is
2302 positive unless both parameters are zero.
2303 Previously something reasonably close to an infinite loop was
2304 possible because numbers could be growing instead of shrinking
2305 in the implementation of Euclid's algorithm.
2308 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2309 sign of the number in question.
2311 Fix BN_is_word(a,w) to work correctly for w == 0.
2313 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2314 because its test if the absolute value of 'a' equals 'w'.
2315 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2316 it exists mostly for use in the implementations of BN_is_zero(),
2317 BN_is_one(), and BN_is_word().
2320 *) New function BN_swap.
2323 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2324 the exponentiation functions are more likely to produce reasonable
2325 results on negative inputs.
2328 *) Change BN_mod_mul so that the result is always non-negative.
2329 Previously, it could be negative if one of the factors was negative;
2330 I don't think anyone really wanted that behaviour.
2333 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2334 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2335 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2336 and add new functions:
2345 BN_mod_lshift1_quick
2349 These functions always generate non-negative results.
2351 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2352 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2354 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2355 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2356 be reduced modulo m.
2357 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2360 The following entry accidentily appeared in the CHANGES file
2361 distributed with OpenSSL 0.9.7. The modifications described in
2362 it do *not* apply to OpenSSL 0.9.7.
2364 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2365 was actually never needed) and in BN_mul(). The removal in BN_mul()
2366 required a small change in bn_mul_part_recursive() and the addition
2367 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2368 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2369 bn_sub_words() and bn_add_words() except they take arrays with
2374 *) In 'openssl passwd', verify passwords read from the terminal
2375 unless the '-salt' option is used (which usually means that
2376 verification would just waste user's time since the resulting
2377 hash is going to be compared with some given password hash)
2378 or the new '-noverify' option is used.
2380 This is an incompatible change, but it does not affect
2381 non-interactive use of 'openssl passwd' (passwords on the command
2382 line, '-stdin' option, '-in ...' option) and thus should not
2386 *) Remove all references to RSAref, since there's no more need for it.
2389 *) Make DSO load along a path given through an environment variable
2390 (SHLIB_PATH) with shl_load().
2393 *) Constify the ENGINE code as a result of BIGNUM constification.
2394 Also constify the RSA code and most things related to it. In a
2395 few places, most notable in the depth of the ASN.1 code, ugly
2396 casts back to non-const were required (to be solved at a later
2400 *) Make it so the openssl application has all engines loaded by default.
2403 *) Constify the BIGNUM routines a little more.
2406 *) Add the following functions:
2408 ENGINE_load_cswift()
2410 ENGINE_load_atalla()
2412 ENGINE_load_builtin_engines()
2414 That way, an application can itself choose if external engines that
2415 are built-in in OpenSSL shall ever be used or not. The benefit is
2416 that applications won't have to be linked with libdl or other dso
2417 libraries unless it's really needed.
2419 Changed 'openssl engine' to load all engines on demand.
2420 Changed the engine header files to avoid the duplication of some
2421 declarations (they differed!).
2424 *) 'openssl engine' can now list capabilities.
2427 *) Better error reporting in 'openssl engine'.
2430 *) Never call load_dh_param(NULL) in s_server.
2433 *) Add engine application. It can currently list engines by name and
2434 identity, and test if they are actually available.
2437 *) Improve RPM specification file by forcing symbolic linking and making
2438 sure the installed documentation is also owned by root.root.
2439 [Damien Miller <djm@mindrot.org>]
2441 *) Give the OpenSSL applications more possibilities to make use of
2442 keys (public as well as private) handled by engines.
2445 *) Add OCSP code that comes from CertCo.
2448 *) Add VMS support for the Rijndael code.
2451 *) Added untested support for Nuron crypto accelerator.
2454 *) Add support for external cryptographic devices. This code was
2455 previously distributed separately as the "engine" branch.
2456 [Geoff Thorpe, Richard Levitte]
2458 *) Rework the filename-translation in the DSO code. It is now possible to
2459 have far greater control over how a "name" is turned into a filename
2460 depending on the operating environment and any oddities about the
2461 different shared library filenames on each system.
2464 *) Support threads on FreeBSD-elf in Configure.
2467 *) Fix for SHA1 assembly problem with MASM: it produces
2468 warnings about corrupt line number information when assembling
2469 with debugging information. This is caused by the overlapping
2471 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2474 NCONF_get_number() has no error checking at all. As a replacement,
2475 NCONF_get_number_e() is defined (_e for "error checking") and is
2476 promoted strongly. The old NCONF_get_number is kept around for
2477 binary backward compatibility.
2478 Make it possible for methods to load from something other than a BIO,
2479 by providing a function pointer that is given a name instead of a BIO.
2480 For example, this could be used to load configuration data from an
2484 *) Fix for non blocking accept BIOs. Added new I/O special reason
2485 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2486 with non blocking I/O was not possible because no retry code was
2487 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2491 *) Added the beginnings of Rijndael support.
2494 *) Fix for bug in DirectoryString mask setting. Add support for
2495 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2496 to allow certificate printing to more controllable, additional
2497 'certopt' option to 'x509' to allow new printing options to be
2501 *) Clean old EAY MD5 hack from e_os.h.
2504 Changes between 0.9.6j and 0.9.6k [xx XXX 2003]
2506 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2507 extra data after the compression methods not only for TLS 1.0
2508 but also for SSL 3.0 (as required by the specification).
2509 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2511 *) Change X509_certificate_type() to mark the key as exported/exportable
2512 when it's 512 *bits* long, not 512 bytes.
2515 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
2517 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2518 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2519 a protocol version number mismatch like a decryption error
2520 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2523 *) Turn on RSA blinding by default in the default implementation
2524 to avoid a timing attack. Applications that don't want it can call
2525 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2526 They would be ill-advised to do so in most cases.
2527 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2529 *) Change RSA blinding code so that it works when the PRNG is not
2530 seeded (in this case, the secret RSA exponent is abused as
2531 an unpredictable seed -- if it is not unpredictable, there
2532 is no point in blinding anyway). Make RSA blinding thread-safe
2533 by remembering the creator's thread ID in rsa->blinding and
2534 having all other threads use local one-time blinding factors
2535 (this requires more computation than sharing rsa->blinding, but
2536 avoids excessive locking; and if an RSA object is not shared
2537 between threads, blinding will still be very fast).
2540 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
2542 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2543 via timing by performing a MAC computation even if incorrrect
2544 block cipher padding has been found. This is a countermeasure
2545 against active attacks where the attacker has to distinguish
2546 between bad padding and a MAC verification error. (CAN-2003-0078)
2548 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2549 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2550 Martin Vuagnoux (EPFL, Ilion)]
2552 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2554 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2555 memory from it's contents. This is done with a counter that will
2556 place alternating values in each byte. This can be used to solve
2557 two issues: 1) the removal of calls to memset() by highly optimizing
2558 compilers, and 2) cleansing with other values than 0, since those can
2559 be read through on certain media, for example a swap space on disk.
2562 *) Bugfix: client side session caching did not work with external caching,
2563 because the session->cipher setting was not restored when reloading
2564 from the external cache. This problem was masked, when
2565 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
2566 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
2569 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
2570 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
2571 [Zeev Lieber <zeev-l@yahoo.com>]
2573 *) Undo an undocumented change introduced in 0.9.6e which caused
2574 repeated calls to OpenSSL_add_all_ciphers() and
2575 OpenSSL_add_all_digests() to be ignored, even after calling
2579 *) Change the default configuration reader to deal with last line not
2580 being properly terminated.
2583 *) Change X509_NAME_cmp() so it applies the special rules on handling
2584 DN values that are of type PrintableString, as well as RDNs of type
2585 emailAddress where the value has the type ia5String.
2586 [stefank@valicert.com via Richard Levitte]
2588 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
2589 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
2590 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
2591 the bitwise-OR of the two for use by the majority of applications
2592 wanting this behaviour, and update the docs. The documented
2593 behaviour and actual behaviour were inconsistent and had been
2594 changing anyway, so this is more a bug-fix than a behavioural
2596 [Geoff Thorpe, diagnosed by Nadav Har'El]
2598 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
2599 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
2602 *) Fix initialization code race conditions in
2603 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
2604 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
2605 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
2606 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
2607 ssl2_get_cipher_by_char(),
2608 ssl3_get_cipher_by_char().
2609 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
2611 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
2612 the cached sessions are flushed, as the remove_cb() might use ex_data
2613 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
2614 (see [openssl.org #212]).
2615 [Geoff Thorpe, Lutz Jaenicke]
2617 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
2618 length, instead of the encoding length to d2i_ASN1_OBJECT.
2621 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
2623 *) [In 0.9.6g-engine release:]
2624 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
2625 [Lynn Gazis <lgazis@rainbow.com>]
2627 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
2629 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
2630 and get fix the header length calculation.
2631 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
2632 Alon Kantor <alonk@checkpoint.com> (and others),
2635 *) Use proper error handling instead of 'assertions' in buffer
2636 overflow checks added in 0.9.6e. This prevents DoS (the
2637 assertions could call abort()).
2638 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
2640 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
2642 *) Add various sanity checks to asn1_get_length() to reject
2643 the ASN1 length bytes if they exceed sizeof(long), will appear
2644 negative or the content length exceeds the length of the
2646 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2648 *) Fix cipher selection routines: ciphers without encryption had no flags
2649 for the cipher strength set and where therefore not handled correctly
2650 by the selection routines (PR #130).
2653 *) Fix EVP_dsa_sha macro.
2657 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
2658 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
2659 that was added in OpenSSL 0.9.6d.
2661 As the countermeasure turned out to be incompatible with some
2662 broken SSL implementations, the new option is part of SSL_OP_ALL.
2663 SSL_OP_ALL is usually employed when compatibility with weird SSL
2664 implementations is desired (e.g. '-bugs' option to 's_client' and
2665 's_server'), so the new option is automatically set in many
2669 *) Changes in security patch:
2671 Changes marked "(CHATS)" were sponsored by the Defense Advanced
2672 Research Projects Agency (DARPA) and Air Force Research Laboratory,
2673 Air Force Materiel Command, USAF, under agreement number
2676 *) Add various sanity checks to asn1_get_length() to reject
2677 the ASN1 length bytes if they exceed sizeof(long), will appear
2678 negative or the content length exceeds the length of the
2679 supplied buffer. (CAN-2002-0659)
2680 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2682 *) Assertions for various potential buffer overflows, not known to
2684 [Ben Laurie (CHATS)]
2686 *) Various temporary buffers to hold ASCII versions of integers were
2687 too small for 64 bit platforms. (CAN-2002-0655)
2688 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
2690 *) Remote buffer overflow in SSL3 protocol - an attacker could
2691 supply an oversized session ID to a client. (CAN-2002-0656)
2692 [Ben Laurie (CHATS)]
2694 *) Remote buffer overflow in SSL2 protocol - an attacker could
2695 supply an oversized client master key. (CAN-2002-0656)
2696 [Ben Laurie (CHATS)]
2698 Changes between 0.9.6c and 0.9.6d [9 May 2002]
2700 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
2701 encoded as NULL) with id-dsa-with-sha1.
2702 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
2704 *) Check various X509_...() return values in apps/req.c.
2705 [Nils Larsch <nla@trustcenter.de>]
2707 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
2708 an end-of-file condition would erronously be flagged, when the CRLF
2709 was just at the end of a processed block. The bug was discovered when
2710 processing data through a buffering memory BIO handing the data to a
2711 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
2712 <ptsekov@syntrex.com> and Nedelcho Stanev.
2715 *) Implement a countermeasure against a vulnerability recently found
2716 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
2717 before application data chunks to avoid the use of known IVs
2718 with data potentially chosen by the attacker.
2721 *) Fix length checks in ssl3_get_client_hello().
2724 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
2725 to prevent ssl3_read_internal() from incorrectly assuming that
2726 ssl3_read_bytes() found application data while handshake
2727 processing was enabled when in fact s->s3->in_read_app_data was
2728 merely automatically cleared during the initial handshake.
2729 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
2731 *) Fix object definitions for Private and Enterprise: they were not
2732 recognized in their shortname (=lowercase) representation. Extend
2733 obj_dat.pl to issue an error when using undefined keywords instead
2734 of silently ignoring the problem (Svenning Sorensen
2735 <sss@sss.dnsalias.net>).
2738 *) Fix DH_generate_parameters() so that it works for 'non-standard'
2739 generators, i.e. generators other than 2 and 5. (Previously, the
2740 code did not properly initialise the 'add' and 'rem' values to
2741 BN_generate_prime().)
2743 In the new general case, we do not insist that 'generator' is
2744 actually a primitive root: This requirement is rather pointless;
2745 a generator of the order-q subgroup is just as good, if not
2749 *) Map new X509 verification errors to alerts. Discovered and submitted by
2750 Tom Wu <tom@arcot.com>.
2753 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
2754 returning non-zero before the data has been completely received
2755 when using non-blocking I/O.
2756 [Bodo Moeller; problem pointed out by John Hughes]
2758 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
2759 [Ben Laurie, Lutz Jaenicke]
2761 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
2762 Yoram Zahavi <YoramZ@gilian.com>).
2765 *) Add information about CygWin 1.3 and on, and preserve proper
2766 configuration for the versions before that.
2767 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2769 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
2770 check whether we deal with a copy of a session and do not delete from
2771 the cache in this case. Problem reported by "Izhar Shoshani Levi"
2772 <izhar@checkpoint.com>.
2775 *) Do not store session data into the internal session cache, if it
2776 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
2777 flag is set). Proposed by Aslam <aslam@funk.com>.
2780 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
2784 *) [In 0.9.6d-engine release:]
2785 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2786 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2788 *) Add the configuration target linux-s390x.
2789 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
2791 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
2792 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
2793 variable as an indication that a ClientHello message has been
2794 received. As the flag value will be lost between multiple
2795 invocations of ssl3_accept when using non-blocking I/O, the
2796 function may not be aware that a handshake has actually taken
2797 place, thus preventing a new session from being added to the
2800 To avoid this problem, we now set s->new_session to 2 instead of
2801 using a local variable.
2802 [Lutz Jaenicke, Bodo Moeller]
2804 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
2805 if the SSL_R_LENGTH_MISMATCH error is detected.
2806 [Geoff Thorpe, Bodo Moeller]
2808 *) New 'shared_ldflag' column in Configure platform table.
2811 *) Fix EVP_CIPHER_mode macro.
2812 ["Dan S. Camper" <dan@bti.net>]
2814 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
2815 type, we must throw them away by setting rr->length to 0.
2816 [D P Chang <dpc@qualys.com>]
2818 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
2820 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
2821 <Dominikus.Scherkl@biodata.com>. (The previous implementation
2822 worked incorrectly for those cases where range = 10..._2 and
2823 3*range is two bits longer than range.)
2826 *) Only add signing time to PKCS7 structures if it is not already
2830 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
2831 OBJ_ld_ce should be OBJ_id_ce.
2832 Also some ip-pda OIDs in crypto/objects/objects.txt were
2833 incorrect (cf. RFC 3039).
2834 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
2836 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
2837 returns early because it has nothing to do.
2838 [Andy Schneider <andy.schneider@bjss.co.uk>]
2840 *) [In 0.9.6c-engine release:]
2841 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
2842 [Andy Schneider <andy.schneider@bjss.co.uk>]
2844 *) [In 0.9.6c-engine release:]
2845 Add support for Cryptographic Appliance's keyserver technology.
2846 (Use engine 'keyclient')
2847 [Cryptographic Appliances and Geoff Thorpe]
2849 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
2850 is called via tools/c89.sh because arguments have to be
2851 rearranged (all '-L' options must appear before the first object
2853 [Richard Shapiro <rshapiro@abinitio.com>]
2855 *) [In 0.9.6c-engine release:]
2856 Add support for Broadcom crypto accelerator cards, backported
2858 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
2860 *) [In 0.9.6c-engine release:]
2861 Add support for SureWare crypto accelerator cards from
2862 Baltimore Technologies. (Use engine 'sureware')
2863 [Baltimore Technologies and Mark Cox]
2865 *) [In 0.9.6c-engine release:]
2866 Add support for crypto accelerator cards from Accelerated
2867 Encryption Processing, www.aep.ie. (Use engine 'aep')
2868 [AEP Inc. and Mark Cox]
2870 *) Add a configuration entry for gcc on UnixWare.
2871 [Gary Benson <gbenson@redhat.com>]
2873 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
2874 messages are stored in a single piece (fixed-length part and
2875 variable-length part combined) and fix various bugs found on the way.
2878 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
2879 instead. BIO_gethostbyname() does not know what timeouts are
2880 appropriate, so entries would stay in cache even when they have
2882 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
2884 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
2885 faced with a pathologically small ClientHello fragment that does
2886 not contain client_version: Instead of aborting with an error,
2887 simply choose the highest available protocol version (i.e.,
2888 TLS 1.0 unless it is disabled). In practice, ClientHello
2889 messages are never sent like this, but this change gives us
2890 strictly correct behaviour at least for TLS.
2893 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
2894 never resets s->method to s->ctx->method when called from within
2895 one of the SSL handshake functions.
2896 [Bodo Moeller; problem pointed out by Niko Baric]
2898 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
2899 (sent using the client's version number) if client_version is
2900 smaller than the protocol version in use. Also change
2901 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
2902 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
2903 the client will at least see that alert.
2906 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
2910 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
2911 client receives HelloRequest while in a handshake.
2912 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
2914 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
2915 should end in 'break', not 'goto end' which circuments various
2916 cleanups done in state SSL_ST_OK. But session related stuff
2917 must be disabled for SSL_ST_OK in the case that we just sent a
2920 Also avoid some overhead by not calling ssl_init_wbio_buffer()
2921 before just sending a HelloRequest.
2922 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
2924 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
2925 reveal whether illegal block cipher padding was found or a MAC
2926 verification error occured. (Neither SSLerr() codes nor alerts
2927 are directly visible to potential attackers, but the information
2928 may leak via logfiles.)
2930 Similar changes are not required for the SSL 2.0 implementation
2931 because the number of padding bytes is sent in clear for SSL 2.0,
2932 and the extra bytes are just ignored. However ssl/s2_pkt.c
2933 failed to verify that the purported number of padding bytes is in
2937 *) Add OpenUNIX-8 support including shared libraries
2938 (Boyd Lynn Gerber <gerberb@zenez.com>).
2941 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
2942 'wristwatch attack' using huge encoding parameters (cf.
2943 James H. Manger's CRYPTO 2001 paper). Note that the
2944 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
2945 encoding parameters and hence was not vulnerable.
2948 *) BN_sqr() bug fix.
2949 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
2951 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
2952 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
2953 followed by modular reduction.
2954 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
2956 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
2957 equivalent based on BN_pseudo_rand() instead of BN_rand().
2960 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
2961 This function was broken, as the check for a new client hello message
2962 to handle SGC did not allow these large messages.
2963 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
2966 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
2969 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
2970 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
2973 *) Rework the configuration and shared library support for Tru64 Unix.
2974 The configuration part makes use of modern compiler features and
2975 still retains old compiler behavior for those that run older versions
2976 of the OS. The shared library support part includes a variant that
2977 uses the RPATH feature, and is available through the special
2978 configuration target "alpha-cc-rpath", which will never be selected
2980 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
2982 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
2983 with the same message size as in ssl3_get_certificate_request().
2984 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
2985 messages might inadvertently be reject as too long.
2986 [Petr Lampa <lampa@fee.vutbr.cz>]
2988 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
2991 *) Modified SSL library such that the verify_callback that has been set
2992 specificly for an SSL object with SSL_set_verify() is actually being
2993 used. Before the change, a verify_callback set with this function was
2994 ignored and the verify_callback() set in the SSL_CTX at the time of
2995 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
2996 to allow the necessary settings.
2999 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3000 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3001 done automatically (in contradiction to the requirements of the C
3002 standard). This made problems when used from OpenSSH.
3005 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3006 dh->length and always used
3008 BN_rand_range(priv_key, dh->p).
3010 BN_rand_range() is not necessary for Diffie-Hellman, and this
3011 specific range makes Diffie-Hellman unnecessarily inefficient if
3012 dh->length (recommended exponent length) is much smaller than the
3013 length of dh->p. We could use BN_rand_range() if the order of
3014 the subgroup was stored in the DH structure, but we only have
3019 BN_rand(priv_key, l, ...)
3021 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3027 RSA_eay_public_encrypt
3028 RSA_eay_private_decrypt
3029 RSA_eay_private_encrypt (signing)
3030 RSA_eay_public_decrypt (signature verification)
3032 (default implementations for RSA_public_encrypt,
3033 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3034 always reject numbers >= n.
3037 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3038 to synchronize access to 'locking_thread'. This is necessary on
3039 systems where access to 'locking_thread' (an 'unsigned long'
3040 variable) is not atomic.
3043 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3044 *before* setting the 'crypto_lock_rand' flag. The previous code had
3045 a race condition if 0 is a valid thread ID.
3046 [Travis Vitek <vitek@roguewave.com>]
3048 *) Add support for shared libraries under Irix.
3049 [Albert Chin-A-Young <china@thewrittenword.com>]
3051 *) Add configuration option to build on Linux on both big-endian and
3053 [Ralf Baechle <ralf@uni-koblenz.de>]
3055 *) Add the possibility to create shared libraries on HP-UX.
3058 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3060 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3061 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3062 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3063 PRNG state recovery was possible based on the output of
3064 one PRNG request appropriately sized to gain knowledge on
3065 'md' followed by enough consecutive 1-byte PRNG requests
3066 to traverse all of 'state'.
3068 1. When updating 'md_local' (the current thread's copy of 'md')
3069 during PRNG output generation, hash all of the previous
3070 'md_local' value, not just the half used for PRNG output.
3072 2. Make the number of bytes from 'state' included into the hash
3073 independent from the number of PRNG bytes requested.
3075 The first measure alone would be sufficient to avoid
3076 Markku-Juhani's attack. (Actually it had never occurred
3077 to me that the half of 'md_local' used for chaining was the
3078 half from which PRNG output bytes were taken -- I had always
3079 assumed that the secret half would be used.) The second
3080 measure makes sure that additional data from 'state' is never
3081 mixed into 'md_local' in small portions; this heuristically
3082 further strengthens the PRNG.
3085 *) Fix crypto/bn/asm/mips3.s.
3088 *) When only the key is given to "enc", the IV is undefined. Print out
3089 an error message in this case.
3092 *) Handle special case when X509_NAME is empty in X509 printing routines.
3095 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3096 positive and less than q.
3099 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3100 used: it isn't thread safe and the add_lock_callback should handle
3102 [Paul Rose <Paul.Rose@bridge.com>]
3104 *) Verify that incoming data obeys the block size in
3105 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3109 [Ulf Möller, Bodo Möller]
3111 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3112 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3113 when fixing the server behaviour for backwards-compatible 'client
3114 hello' messages. (Note that the attack is impractical against
3115 SSL 3.0 and TLS 1.0 anyway because length and version checking
3116 means that the probability of guessing a valid ciphertext is
3117 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3120 Before 0.9.5, the countermeasure (hide the error by generating a
3121 random 'decryption result') did not work properly because
3122 ERR_clear_error() was missing, meaning that SSL_get_error() would
3123 detect the supposedly ignored error.
3125 Both problems are now fixed.
3128 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3129 (previously it was 1024).
3132 *) Fix for compatibility mode trust settings: ignore trust settings
3133 unless some valid trust or reject settings are present.
3136 *) Fix for blowfish EVP: its a variable length cipher.
3139 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3140 parameters in DSA public key structures and return an error in the
3141 DSA routines if parameters are absent.
3144 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3145 in the current directory if neither $RANDFILE nor $HOME was set.
3146 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3147 caused some confusion to Windows users who haven't defined $HOME.
3148 Thus RAND_file_name() is changed again: e_os.h can define a
3149 DEFAULT_HOME, which will be used if $HOME is not set.
3150 For Windows, we use "C:"; on other platforms, we still require
3151 environment variables.
3153 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3154 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3155 having multiple threads call RAND_poll() concurrently.
3158 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3159 combination of a flag and a thread ID variable.
3160 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3161 flag), *other* threads can enter ssleay_add_bytes without obeying
3162 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3163 that they do not hold after the first thread unsets add_do_not_lock).
3166 *) Change bctest again: '-x' expressions are not available in all
3170 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3172 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3173 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3175 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3176 the default extension for executables, if any. Also, make the perl
3177 scripts that use symlink() to test if it really exists and use "cp"
3178 if it doesn't. All this made OpenSSL compilable and installable in
3182 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3183 If SEQUENCE is length is indefinite just set c->slen to the total
3184 amount of data available.
3185 [Steve Henson, reported by shige@FreeBSD.org]
3186 [This change does not apply to 0.9.7.]
3188 *) Change bctest to avoid here-documents inside command substitution
3189 (workaround for FreeBSD /bin/sh bug).
3190 For compatibility with Ultrix, avoid shell functions (introduced
3191 in the bctest version that searches along $PATH).
3194 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3195 with des_encrypt() defined on some operating systems, like Solaris
3199 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3200 On the Importance of Eliminating Errors in Cryptographic
3201 Computations, J. Cryptology 14 (2001) 2, 101-119,
3202 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3205 *) MIPS assembler BIGNUM division bug fix.
3208 *) Disabled incorrect Alpha assembler code.
3211 *) Fix PKCS#7 decode routines so they correctly update the length
3212 after reading an EOC for the EXPLICIT tag.
3214 [This change does not apply to 0.9.7.]
3216 *) Fix bug in PKCS#12 key generation routines. This was triggered
3217 if a 3DES key was generated with a 0 initial byte. Include
3218 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3219 (but broken) behaviour.
3222 *) Enhance bctest to search for a working bc along $PATH and print
3224 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3226 *) Fix memory leaks in err.c: free err_data string if necessary;
3227 don't write to the wrong index in ERR_set_error_data.
3230 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3234 *) Replace rdtsc with _emit statements for VC++ version 5.
3235 [Jeremy Cooper <jeremy@baymoo.org>]
3237 *) Make it possible to reuse SSLv2 sessions.
3240 *) In copy_email() check for >= 0 as a return value for
3241 X509_NAME_get_index_by_NID() since 0 is a valid index.
3242 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3244 *) Avoid coredump with unsupported or invalid public keys by checking if
3245 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3246 PKCS7_verify() fails with non detached data.
3249 *) Don't use getenv in library functions when run as setuid/setgid.
3250 New function OPENSSL_issetugid().
3253 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
3254 due to incorrect handling of multi-threading:
3256 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
3258 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
3260 3. Count how many times MemCheck_off() has been called so that
3261 nested use can be treated correctly. This also avoids
3262 inband-signalling in the previous code (which relied on the
3263 assumption that thread ID 0 is impossible).
3266 *) Add "-rand" option also to s_client and s_server.
3269 *) Fix CPU detection on Irix 6.x.
3270 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
3271 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3273 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
3276 [This change does not apply to 0.9.7.]
3278 *) Use the cached encoding of an X509_NAME structure rather than
3279 copying it. This is apparently the reason for the libsafe "errors"
3280 but the code is actually correct.
3283 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
3284 Bleichenbacher's DSA attack.
3285 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
3286 to be set and top=0 forces the highest bit to be set; top=-1 is new
3287 and leaves the highest bit random.
3288 [Ulf Moeller, Bodo Moeller]
3290 *) In the NCONF_...-based implementations for CONF_... queries
3291 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
3292 a temporary CONF structure with the data component set to NULL
3293 (which gives segmentation faults in lh_retrieve).
3294 Instead, use NULL for the CONF pointer in CONF_get_string and
3295 CONF_get_number (which may use environment variables) and directly
3296 return NULL from CONF_get_section.
3299 *) Fix potential buffer overrun for EBCDIC.
3302 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
3303 keyUsage if basicConstraints absent for a CA.
3306 *) Make SMIME_write_PKCS7() write mail header values with a format that
3307 is more generally accepted (no spaces before the semicolon), since
3308 some programs can't parse those values properly otherwise. Also make
3309 sure BIO's that break lines after each write do not create invalid
3313 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
3314 macros previously used would not encode an empty SEQUENCE OF
3315 and break the signature.
3317 [This change does not apply to 0.9.7.]
3319 *) Zero the premaster secret after deriving the master secret in
3323 *) Add some EVP_add_digest_alias registrations (as found in
3324 OpenSSL_add_all_digests()) to SSL_library_init()
3325 aka OpenSSL_add_ssl_algorithms(). This provides improved
3326 compatibility with peers using X.509 certificates
3327 with unconventional AlgorithmIdentifier OIDs.
3330 *) Fix for Irix with NO_ASM.
3331 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
3333 *) ./config script fixes.
3334 [Ulf Moeller, Richard Levitte]
3336 *) Fix 'openssl passwd -1'.
3339 *) Change PKCS12_key_gen_asc() so it can cope with non null
3340 terminated strings whose length is passed in the passlen
3341 parameter, for example from PEM callbacks. This was done
3342 by adding an extra length parameter to asc2uni().
3343 [Steve Henson, reported by <oddissey@samsung.co.kr>]
3345 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
3346 call failed, free the DSA structure.
3349 *) Fix to uni2asc() to cope with zero length Unicode strings.
3350 These are present in some PKCS#12 files.
3353 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
3354 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
3355 when writing a 32767 byte record.
3356 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
3358 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
3359 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
3361 (RSA objects have a reference count access to which is protected
3362 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
3363 so they are meant to be shared between threads.)
3364 [Bodo Moeller, Geoff Thorpe; original patch submitted by
3365 "Reddie, Steven" <Steven.Reddie@ca.com>]
3367 *) Fix a deadlock in CRYPTO_mem_leaks().
3370 *) Use better test patterns in bntest.
3373 *) rand_win.c fix for Borland C.
3376 *) BN_rshift bugfix for n == 0.
3379 *) Add a 'bctest' script that checks for some known 'bc' bugs
3380 so that 'make test' does not abort just because 'bc' is broken.
3383 *) Store verify_result within SSL_SESSION also for client side to
3384 avoid potential security hole. (Re-used sessions on the client side
3385 always resulted in verify_result==X509_V_OK, not using the original
3386 result of the server certificate verification.)
3389 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
3390 SSL3_RT_APPLICATION_DATA, return 0.
3391 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
3395 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
3396 releases, have been re-implemented by renaming the previous
3397 implementations of ssl2_read and ssl3_read to ssl2_read_internal
3398 and ssl3_read_internal, respectively, and adding 'peek' parameters
3399 to them. The new ssl[23]_{read,peek} functions are calls to
3400 ssl[23]_read_internal with the 'peek' flag set appropriately.
3401 A 'peek' parameter has also been added to ssl3_read_bytes, which
3402 does the actual work for ssl3_read_internal.
3405 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
3406 the method-specific "init()" handler. Also clean up ex_data after
3407 calling the method-specific "finish()" handler. Previously, this was
3408 happening the other way round.
3411 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
3412 The previous value, 12, was not always sufficient for BN_mod_exp().
3415 *) Make sure that shared libraries get the internal name engine with
3416 the full version number and not just 0. This should mark the
3417 shared libraries as not backward compatible. Of course, this should
3418 be changed again when we can guarantee backward binary compatibility.
3421 *) Fix typo in get_cert_by_subject() in by_dir.c
3422 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
3424 *) Rework the system to generate shared libraries:
3426 - Make note of the expected extension for the shared libraries and
3427 if there is a need for symbolic links from for example libcrypto.so.0
3428 to libcrypto.so.0.9.7. There is extended info in Configure for
3431 - Make as few rebuilds of the shared libraries as possible.
3433 - Still avoid linking the OpenSSL programs with the shared libraries.
3435 - When installing, install the shared libraries separately from the
3439 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
3441 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
3442 and not in SSL_clear because the latter is also used by the
3443 accept/connect functions; previously, the settings made by
3444 SSL_set_read_ahead would be lost during the handshake.
3445 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
3447 *) Correct util/mkdef.pl to be selective about disabled algorithms.
3448 Previously, it would create entries for disableed algorithms no
3452 *) Added several new manual pages for SSL_* function.
3455 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
3457 *) In ssl23_get_client_hello, generate an error message when faced
3458 with an initial SSL 3.0/TLS record that is too small to contain the
3459 first two bytes of the ClientHello message, i.e. client_version.
3460 (Note that this is a pathologic case that probably has never happened
3461 in real life.) The previous approach was to use the version number
3462 from the record header as a substitute; but our protocol choice
3463 should not depend on that one because it is not authenticated
3464 by the Finished messages.
3467 *) More robust randomness gathering functions for Windows.
3468 [Jeffrey Altman <jaltman@columbia.edu>]
3470 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
3471 not set then we don't setup the error code for issuer check errors
3472 to avoid possibly overwriting other errors which the callback does
3473 handle. If an application does set the flag then we assume it knows
3474 what it is doing and can handle the new informational codes
3478 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
3479 a general "ANY" type, as such it should be able to decode anything
3480 including tagged types. However it didn't check the class so it would
3481 wrongly interpret tagged types in the same way as their universal
3482 counterpart and unknown types were just rejected. Changed so that the
3483 tagged and unknown types are handled in the same way as a SEQUENCE:
3484 that is the encoding is stored intact. There is also a new type
3485 "V_ASN1_OTHER" which is used when the class is not universal, in this
3486 case we have no idea what the actual type is so we just lump them all
3490 *) On VMS, stdout may very well lead to a file that is written to
3491 in a record-oriented fashion. That means that every write() will
3492 write a separate record, which will be read separately by the
3493 programs trying to read from it. This can be very confusing.
3495 The solution is to put a BIO filter in the way that will buffer
3496 text until a linefeed is reached, and then write everything a
3497 line at a time, so every record written will be an actual line,
3498 not chunks of lines and not (usually doesn't happen, but I've
3499 seen it once) several lines in one record. BIO_f_linebuffer() is
3502 Currently, it's a VMS-only method, because that's where it has
3503 been tested well enough.
3506 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
3507 it can return incorrect results.
3508 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
3509 but it was in 0.9.6-beta[12].)
3512 *) Disable the check for content being present when verifying detached
3513 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
3514 include zero length content when signing messages.
3517 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
3518 BIO_ctrl (for BIO pairs).
3521 *) Add DSO method for VMS.
3524 *) Bug fix: Montgomery multiplication could produce results with the
3528 *) Add RPM specification openssl.spec and modify it to build three
3529 packages. The default package contains applications, application
3530 documentation and run-time libraries. The devel package contains
3531 include files, static libraries and function documentation. The
3532 doc package contains the contents of the doc directory. The original
3533 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
3536 *) Add a large number of documentation files for many SSL routines.
3537 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
3539 *) Add a configuration entry for Sony News 4.
3540 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
3542 *) Don't set the two most significant bits to one when generating a
3543 random number < q in the DSA library.
3546 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
3547 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
3548 the underlying transport is blocking) if a handshake took place.
3549 (The default behaviour is needed by applications such as s_client
3550 and s_server that use select() to determine when to use SSL_read;
3551 but for applications that know in advance when to expect data, it
3552 just makes things more complicated.)
3555 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
3559 *) Add a few more EBCDIC conditionals that make `req' and `x509'
3560 work better on such systems.
3561 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
3563 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
3564 Update PKCS12_parse() so it copies the friendlyName and the
3565 keyid to the certificates aux info.
3568 *) Fix bug in PKCS7_verify() which caused an infinite loop
3569 if there was more than one signature.
3570 [Sven Uszpelkat <su@celocom.de>]
3572 *) Major change in util/mkdef.pl to include extra information
3573 about each symbol, as well as presentig variables as well
3574 as functions. This change means that there's n more need
3575 to rebuild the .num files when some algorithms are excluded.
3578 *) Allow the verify time to be set by an application,
3579 rather than always using the current time.
3582 *) Phase 2 verify code reorganisation. The certificate
3583 verify code now looks up an issuer certificate by a
3584 number of criteria: subject name, authority key id
3585 and key usage. It also verifies self signed certificates
3586 by the same criteria. The main comparison function is
3587 X509_check_issued() which performs these checks.
3589 Lot of changes were necessary in order to support this
3590 without completely rewriting the lookup code.
3592 Authority and subject key identifier are now cached.
3594 The LHASH 'certs' is X509_STORE has now been replaced
3595 by a STACK_OF(X509_OBJECT). This is mainly because an
3596 LHASH can't store or retrieve multiple objects with
3597 the same hash value.
3599 As a result various functions (which were all internal
3600 use only) have changed to handle the new X509_STORE
3601 structure. This will break anything that messed round
3602 with X509_STORE internally.
3604 The functions X509_STORE_add_cert() now checks for an
3605 exact match, rather than just subject name.
3607 The X509_STORE API doesn't directly support the retrieval
3608 of multiple certificates matching a given criteria, however
3609 this can be worked round by performing a lookup first
3610 (which will fill the cache with candidate certificates)
3611 and then examining the cache for matches. This is probably
3612 the best we can do without throwing out X509_LOOKUP
3613 entirely (maybe later...).
3615 The X509_VERIFY_CTX structure has been enhanced considerably.
3617 All certificate lookup operations now go via a get_issuer()
3618 callback. Although this currently uses an X509_STORE it
3619 can be replaced by custom lookups. This is a simple way
3620 to bypass the X509_STORE hackery necessary to make this
3621 work and makes it possible to use more efficient techniques
3622 in future. A very simple version which uses a simple
3623 STACK for its trusted certificate store is also provided
3624 using X509_STORE_CTX_trusted_stack().
3626 The verify_cb() and verify() callbacks now have equivalents
3627 in the X509_STORE_CTX structure.
3629 X509_STORE_CTX also has a 'flags' field which can be used
3630 to customise the verify behaviour.
3633 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
3634 excludes S/MIME capabilities.
3637 *) When a certificate request is read in keep a copy of the
3638 original encoding of the signed data and use it when outputing
3639 again. Signatures then use the original encoding rather than
3640 a decoded, encoded version which may cause problems if the
3641 request is improperly encoded.
3644 *) For consistency with other BIO_puts implementations, call
3645 buffer_write(b, ...) directly in buffer_puts instead of calling
3648 In BIO_puts, increment b->num_write as in BIO_write.
3649 [Peter.Sylvester@EdelWeb.fr]
3651 *) Fix BN_mul_word for the case where the word is 0. (We have to use
3652 BN_zero, we may not return a BIGNUM with an array consisting of
3656 *) Avoid calling abort() from within the library when problems are
3657 detected, except if preprocessor symbols have been defined
3658 (such as REF_CHECK, BN_DEBUG etc.).
3661 *) New openssl application 'rsautl'. This utility can be
3662 used for low level RSA operations. DER public key
3663 BIO/fp routines also added.
3666 *) New Configure entry and patches for compiling on QNX 4.
3667 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
3669 *) A demo state-machine implementation was sponsored by
3670 Nuron (http://www.nuron.com/) and is now available in
3671 demos/state_machine.
3674 *) New options added to the 'dgst' utility for signature
3675 generation and verification.
3678 *) Unrecognized PKCS#7 content types are now handled via a
3679 catch all ASN1_TYPE structure. This allows unsupported
3680 types to be stored as a "blob" and an application can
3681 encode and decode it manually.
3684 *) Fix various signed/unsigned issues to make a_strex.c
3686 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
3688 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
3689 length if passed a buffer. ASN1_INTEGER_to_BN failed
3690 if passed a NULL BN and its argument was negative.
3691 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
3693 *) Modification to PKCS#7 encoding routines to output definite
3694 length encoding. Since currently the whole structures are in
3695 memory there's not r