5 Changes between 0.9.7f and 0.9.8 [xx XXX xxxx]
7 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
8 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
11 *) Remove buggy and incompletet DH cert support from
12 ssl/ssl_rsa.c and ssl/s3_both.c
15 *) Use SHA-1 instead of MD5 as the default digest algorithm for
16 the apps/openssl applications.
19 *) Compile clean with "-Wall -Wmissing-prototypes
20 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
21 DEBUG_SAFESTACK must also be set.
24 *) Change ./Configure so that certain algorithms can be disabled by default.
25 The new counterpiece to "no-xxx" is "enable-xxx".
27 The patented RC5 and MDC2 algorithms will now be disabled unless
28 "enable-rc5" and "enable-mdc2", respectively, are specified.
30 (IDEA remains enabled despite being patented. This is because IDEA
31 is frequently required for interoperability, and there is no license
32 fee for non-commercial use. As before, "no-idea" can be used to
33 avoid this algorithm.)
37 *) Add processing of proxy certificates (see RFC 3820). This work was
38 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
39 EGEE (Enabling Grids for E-science in Europe).
42 *) RC4 performance overhaul on modern architectures/implementations, such
43 as Intel P4, IA-64 and AMD64.
46 *) New utility extract-section.pl. This can be used specify an alternative
47 section number in a pod file instead of having to treat each file as
48 a separate case in Makefile. This can be done by adding two lines to the
51 =for comment openssl_section:XXX
53 The blank line is mandatory.
57 *) New arguments -certform, -keyform and -pass for s_client and s_server
58 to allow alternative format key and certificate files and passphrase
62 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
63 update associated structures and add various utility functions.
65 Add new policy related verify parameters, include policy checking in
66 standard verify code. Enhance 'smime' application with extra parameters
67 to support policy checking and print out.
70 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
71 Nehemiah processors. These extensions support AES encryption in hardware
72 as well as RNG (though RNG support is currently disabled).
73 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
75 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
78 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
79 [Andy Polyakov and a number of other people]
81 *) Improved PowerPC platform support. Most notably BIGNUM assembler
82 implementation contributed by IBM.
83 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
85 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
86 exponent rather than 'unsigned long'. There is a corresponding change to
87 the new 'rsa_keygen' element of the RSA_METHOD structure.
88 [Jelte Jansen, Geoff Thorpe]
90 *) Functionality for creating the initial serial number file is now
91 moved from CA.pl to the 'ca' utility with a new option -create_serial.
93 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
94 number file to 1, which is bound to cause problems. To avoid
95 the problems while respecting compatibility between different 0.9.7
96 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
97 CA.pl for serial number initialization. With the new release 0.9.8,
98 we can fix the problem directly in the 'ca' utility.)
101 *) Reduced header interdepencies by declaring more opaque objects in
102 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
103 give fewer recursive includes, which could break lazy source code - so
104 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
105 developers should define this symbol when building and using openssl to
106 ensure they track the recommended behaviour, interfaces, [etc], but
107 backwards-compatible behaviour prevails when this isn't defined.
110 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
113 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
114 This will generate a random key of the appropriate length based on the
115 cipher context. The EVP_CIPHER can provide its own random key generation
116 routine to support keys of a specific form. This is used in the des and
117 3des routines to generate a key of the correct parity. Update S/MIME
118 code to use new functions and hence generate correct parity DES keys.
119 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
120 valid (weak or incorrect parity).
123 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
124 as looking them up. This is useful when the verified structure may contain
125 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
126 present unless the new PKCS7_NO_CRL flag is asserted.
129 *) Extend ASN1 oid configuration module. It now additionally accepts the
132 shortName = some long name, 1.2.3.4
135 *) Reimplemented the BN_CTX implementation. There is now no more static
136 limitation on the number of variables it can handle nor the depth of the
137 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
138 information can now expand as required, and rather than having a single
139 static array of bignums, BN_CTX now uses a linked-list of such arrays
140 allowing it to expand on demand whilst maintaining the usefulness of
144 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
145 to allow all RSA operations to function using a single BN_CTX.
148 *) Preliminary support for certificate policy evaluation and checking. This
149 is initially intended to pass the tests outlined in "Conformance Testing
150 of Relying Party Client Certificate Path Processing Logic" v1.07.
153 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
154 remained unused and not that useful. A variety of other little bignum
155 tweaks and fixes have also been made continuing on from the audit (see
159 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
160 associated ASN1, EVP and SSL functions and old ASN1 macros.
163 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
164 and this should never fail. So the return value from the use of
165 BN_set_word() (which can fail due to needless expansion) is now deprecated;
166 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
169 *) BN_CTX_get() should return zero-valued bignums, providing the same
170 initialised value as BN_new().
171 [Geoff Thorpe, suggested by Ulf Möller]
173 *) Support for inhibitAnyPolicy certificate extension.
176 *) An audit of the BIGNUM code is underway, for which debugging code is
177 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
178 is considered valid when processing BIGNUMs, and causes execution to
179 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
180 further steps are taken to deliberately pollute unused data in BIGNUM
181 structures to try and expose faulty code further on. For now, openssl will
182 (in its default mode of operation) continue to tolerate the inconsistent
183 forms that it has tolerated in the past, but authors and packagers should
184 consider trying openssl and their own applications when compiled with
185 these debugging symbols defined. It will help highlight potential bugs in
186 their own code, and will improve the test coverage for OpenSSL itself. At
187 some point, these tighter rules will become openssl's default to improve
188 maintainability, though the assert()s and other overheads will remain only
189 in debugging configurations. See bn.h for more details.
190 [Geoff Thorpe, Nils Larsch, Ulf Möller]
192 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
193 that can only be obtained through BN_CTX_new() (which implicitly
194 initialises it). The presence of this function only made it possible
195 to overwrite an existing structure (and cause memory leaks).
198 *) Because of the callback-based approach for implementing LHASH as a
199 template type, lh_insert() adds opaque objects to hash-tables and
200 lh_doall() or lh_doall_arg() are typically used with a destructor callback
201 to clean up those corresponding objects before destroying the hash table
202 (and losing the object pointers). So some over-zealous constifications in
203 LHASH have been relaxed so that lh_insert() does not take (nor store) the
204 objects as "const" and the lh_doall[_arg] callback wrappers are not
205 prototyped to have "const" restrictions on the object pointers they are
206 given (and so aren't required to cast them away any more).
209 *) The tmdiff.h API was so ugly and minimal that our own timing utility
210 (speed) prefers to use its own implementation. The two implementations
211 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
212 its object type properly exposed (MS_TM) instead of casting to/from "char
213 *". This may still change yet if someone realises MS_TM and "ms_time_***"
214 aren't necessarily the greatest nomenclatures - but this is what was used
215 internally to the implementation so I've used that for now.
218 *) Ensure that deprecated functions do not get compiled when
219 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
220 the self-tests were still using deprecated key-generation functions so
221 these have been updated also.
224 *) Reorganise PKCS#7 code to separate the digest location functionality
225 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
226 New function PKCS7_set_digest() to set the digest type for PKCS#7
227 digestedData type. Add additional code to correctly generate the
228 digestedData type and add support for this type in PKCS7 initialization
232 *) New function PKCS7_set0_type_other() this initializes a PKCS7
233 structure of type "other".
236 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
237 sure the loop does correctly stop and breaking ("division by zero")
238 modulus operations are not performed. The (pre-generated) prime
239 table crypto/bn/bn_prime.h was already correct, but it could not be
240 re-generated on some platforms because of the "division by zero"
241 situation in the script.
242 [Ralf S. Engelschall]
244 *) Update support for ECC-based TLS ciphersuites according to
245 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
246 SHA-1 now is only used for "small" curves (where the
247 representation of a field element takes up to 24 bytes); for
248 larger curves, the field element resulting from ECDH is directly
249 used as premaster secret.
250 [Douglas Stebila (Sun Microsystems Laboratories)]
252 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
253 curve secp160r1 to the tests.
254 [Douglas Stebila (Sun Microsystems Laboratories)]
256 *) Add the possibility to load symbols globally with DSO.
257 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
259 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
260 control of the error stack.
263 *) Add support for STORE in ENGINE.
266 *) Add the STORE type. The intention is to provide a common interface
267 to certificate and key stores, be they simple file-based stores, or
268 HSM-type store, or LDAP stores, or...
269 NOTE: The code is currently UNTESTED and isn't really used anywhere.
272 *) Add a generic structure called OPENSSL_ITEM. This can be used to
273 pass a list of arguments to any function as well as provide a way
274 for a function to pass data back to the caller.
277 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
278 works like BUF_strdup() but can be used to duplicate a portion of
279 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
283 *) Add the function sk_find_ex() which works like sk_find(), but will
284 return an index to an element even if an exact match couldn't be
285 found. The index is guaranteed to point at the element where the
286 searched-for key would be inserted to preserve sorting order.
289 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
290 takes an extra flags argument for optional functionality. Currently,
291 the following flags are defined:
293 OBJ_BSEARCH_VALUE_ON_NOMATCH
294 This one gets OBJ_bsearch_ex() to return a pointer to the first
295 element where the comparing function returns a negative or zero
298 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
299 This one gets OBJ_bsearch_ex() to return a pointer to the first
300 element where the comparing function returns zero. This is useful
301 if there are more than one element where the comparing function
305 *) Make it possible to create self-signed certificates with 'openssl ca'
306 in such a way that the self-signed certificate becomes part of the
307 CA database and uses the same mechanisms for serial number generation
308 as all other certificate signing. The new flag '-selfsign' enables
309 this functionality. Adapt CA.sh and CA.pl.in.
312 *) Add functionality to check the public key of a certificate request
313 against a given private. This is useful to check that a certificate
314 request can be signed by that key (self-signing).
317 *) Make it possible to have multiple active certificates with the same
318 subject in the CA index file. This is done only if the keyword
319 'unique_subject' is set to 'no' in the main CA section (default
320 if 'CA_default') of the configuration file. The value is saved
321 with the database itself in a separate index attribute file,
322 named like the index file with '.attr' appended to the name.
325 *) Generate muti valued AVAs using '+' notation in config files for
329 *) Support for nameConstraints certificate extension.
332 *) Support for policyConstraints certificate extension.
335 *) Support for policyMappings certificate extension.
338 *) Make sure the default DSA_METHOD implementation only uses its
339 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
340 and change its own handlers to be NULL so as to remove unnecessary
341 indirection. This lets alternative implementations fallback to the
342 default implementation more easily.
345 *) Support for directoryName in GeneralName related extensions
349 *) Make it possible to link applications using Makefile.shared.
350 Make that possible even when linking against static libraries!
353 *) Support for single pass processing for S/MIME signing. This now
354 means that S/MIME signing can be done from a pipe, in addition
355 cleartext signing (multipart/signed type) is effectively streaming
356 and the signed data does not need to be all held in memory.
358 This is done with a new flag PKCS7_STREAM. When this flag is set
359 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
360 is done after the data is output (and digests calculated) in
364 *) Add full support for -rpath/-R, both in shared libraries and
365 applications, at least on the platforms where it's known how
369 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
370 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
371 will now compute a table of multiples of the generator that
372 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
373 faster (notably in the case of a single point multiplication,
375 [Nils Larsch, Bodo Moeller]
377 *) IPv6 support for certificate extensions. The various extensions
378 which use the IP:a.b.c.d can now take IPv6 addresses using the
379 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
383 *) Added an ENGINE that implements RSA by performing private key
384 exponentiations with the GMP library. The conversions to and from
385 GMP's mpz_t format aren't optimised nor are any montgomery forms
386 cached, and on x86 it appears OpenSSL's own performance has caught up.
387 However there are likely to be other architectures where GMP could
388 provide a boost. This ENGINE is not built in by default, but it can be
389 specified at Configure time and should be accompanied by the necessary
390 linker additions, eg;
391 ./config -DOPENSSL_USE_GMP -lgmp
394 *) "openssl engine" will not display ENGINE/DSO load failure errors when
395 testing availability of engines with "-t" - the old behaviour is
396 produced by increasing the feature's verbosity with "-tt".
399 *) ECDSA routines: under certain error conditions uninitialized BN objects
400 could be freed. Solution: make sure initialization is performed early
401 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
405 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
406 and DH_METHOD (eg. by ENGINE implementations) to override the normal
407 software implementations. For DSA and DH, parameter generation can
408 also be overriden by providing the appropriate method callbacks.
411 *) Change the "progress" mechanism used in key-generation and
412 primality testing to functions that take a new BN_GENCB pointer in
413 place of callback/argument pairs. The new API functions have "_ex"
414 postfixes and the older functions are reimplemented as wrappers for
415 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
416 declarations of the old functions to help (graceful) attempts to
417 migrate to the new functions. Also, the new key-generation API
418 functions operate on a caller-supplied key-structure and return
419 success/failure rather than returning a key or NULL - this is to
420 help make "keygen" another member function of RSA_METHOD etc.
422 Example for using the new callback interface:
424 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
428 BN_GENCB_set(&my_cb, my_callback, my_arg);
430 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
431 /* For the meaning of a, b in calls to my_callback(), see the
432 * documentation of the function that calls the callback.
433 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
434 * my_callback should return 1 if it wants BN_is_prime_ex()
435 * to continue, or 0 to stop.
440 *) Change the ZLIB compression method to be stateful, and make it
441 available to TLS with the number defined in
442 draft-ietf-tls-compression-04.txt.
445 *) Add the ASN.1 structures and functions for CertificatePair, which
446 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
448 CertificatePair ::= SEQUENCE {
449 forward [0] Certificate OPTIONAL,
450 reverse [1] Certificate OPTIONAL,
451 -- at least one of the pair shall be present -- }
453 Also implement the PEM functions to read and write certificate
454 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
456 This needed to be defined, mostly for the sake of the LDAP
457 attribute crossCertificatePair, but may prove useful elsewhere as
461 *) Make it possible to inhibit symlinking of shared libraries in
462 Makefile.shared, for Cygwin's sake.
465 *) Extend the BIGNUM API by creating new macros that behave like
468 void BN_set_sign(BIGNUM *a, int neg);
469 int BN_get_sign(const BIGNUM *a);
471 and avoid the need to access 'a->neg' directly in applications.
472 [Nils Larsch <nla@trustcenter.de>]
474 *) Implement fast modular reduction for pseudo-Mersenne primes
475 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
476 EC_GROUP_new_curve_GFp() will now automatically use this
478 [Nils Larsch <nla@trustcenter.de>]
480 *) Add new lock type (CRYPTO_LOCK_BN).
483 *) Change the ENGINE framework to automatically load engines
484 dynamically from specific directories unless they could be
485 found to already be built in or loaded. Move all the
486 current engines except for the cryptodev one to a new
488 The engines in engines/ are built as shared libraries if
489 the "shared" options was given to ./Configure or ./config.
490 Otherwise, they are inserted in libcrypto.a.
491 /usr/local/ssl/engines is the default directory for dynamic
492 engines, but that can be overriden at configure time through
493 the usual use of --prefix and/or --openssldir, and at run
494 time with the environment variable OPENSSL_ENGINES.
495 [Geoff Thorpe and Richard Levitte]
497 *) Add Makefile.shared, a helper makefile to build shared
498 libraries. Addapt Makefile.org.
501 *) Add version info to Win32 DLLs.
502 [Peter 'Luna' Runestig" <peter@runestig.com>]
504 *) Add new 'medium level' PKCS#12 API. Certificates and keys
505 can be added using this API to created arbitrary PKCS#12
506 files while avoiding the low level API.
508 New options to PKCS12_create(), key or cert can be NULL and
509 will then be omitted from the output file. The encryption
510 algorithm NIDs can be set to -1 for no encryption, the mac
511 iteration count can be set to 0 to omit the mac.
513 Enhance pkcs12 utility by making the -nokeys and -nocerts
514 options work when creating a PKCS#12 file. New option -nomac
515 to omit the mac, NONE can be set for an encryption algorithm.
516 New code is modified to use the enhanced PKCS12_create()
517 instead of the low level API.
520 *) Extend ASN1 encoder to support indefinite length constructed
521 encoding. This can output sequences tags and octet strings in
522 this form. Modify pk7_asn1.c to support indefinite length
523 encoding. This is experimental and needs additional code to
524 be useful, such as an ASN1 bio and some enhanced streaming
527 Extend template encode functionality so that tagging is passed
528 down to the template encoder.
531 *) Let 'openssl req' fail if an argument to '-newkey' is not
532 recognized instead of using RSA as a default.
535 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
536 As these are not official, they are not included in "ALL";
537 the "ECCdraft" ciphersuite group alias can be used to select them.
538 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
540 *) Add ECDH engine support.
541 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
543 *) Add ECDH in new directory crypto/ecdh/.
544 [Douglas Stebila (Sun Microsystems Laboratories)]
546 *) Let BN_rand_range() abort with an error after 100 iterations
547 without success (which indicates a broken PRNG).
550 *) Change BN_mod_sqrt() so that it verifies that the input value
551 is really the square of the return value. (Previously,
552 BN_mod_sqrt would show GIGO behaviour.)
555 *) Add named elliptic curves over binary fields from X9.62, SECG,
556 and WAP/WTLS; add OIDs that were still missing.
558 [Sheueling Chang Shantz and Douglas Stebila
559 (Sun Microsystems Laboratories)]
561 *) Extend the EC library for elliptic curves over binary fields
562 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
565 EC_GF2m_simple_method
569 EC_GROUP_new_curve_GF2m
570 EC_GROUP_set_curve_GF2m
571 EC_GROUP_get_curve_GF2m
572 EC_POINT_set_affine_coordinates_GF2m
573 EC_POINT_get_affine_coordinates_GF2m
574 EC_POINT_set_compressed_coordinates_GF2m
576 Point compression for binary fields is disabled by default for
577 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
580 As binary polynomials are represented as BIGNUMs, various members
581 of the EC_GROUP and EC_POINT data structures can be shared
582 between the implementations for prime fields and binary fields;
583 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
584 are essentially identical to their ..._GFp counterparts.
585 (For simplicity, the '..._GFp' prefix has been dropped from
586 various internal method names.)
588 An internal 'field_div' method (similar to 'field_mul' and
589 'field_sqr') has been added; this is used only for binary fields.
591 [Sheueling Chang Shantz and Douglas Stebila
592 (Sun Microsystems Laboratories)]
594 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
595 through methods ('mul', 'precompute_mult').
597 The generic implementations (now internally called 'ec_wNAF_mul'
598 and 'ec_wNAF_precomputed_mult') remain the default if these
599 methods are undefined.
601 [Sheueling Chang Shantz and Douglas Stebila
602 (Sun Microsystems Laboratories)]
604 *) New function EC_GROUP_get_degree, which is defined through
605 EC_METHOD. For curves over prime fields, this returns the bit
606 length of the modulus.
608 [Sheueling Chang Shantz and Douglas Stebila
609 (Sun Microsystems Laboratories)]
611 *) New functions EC_GROUP_dup, EC_POINT_dup.
612 (These simply call ..._new and ..._copy).
614 [Sheueling Chang Shantz and Douglas Stebila
615 (Sun Microsystems Laboratories)]
617 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
618 Polynomials are represented as BIGNUMs (where the sign bit is not
619 used) in the following functions [macros]:
622 BN_GF2m_sub [= BN_GF2m_add]
623 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
624 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
625 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
627 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
628 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
629 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
630 BN_GF2m_cmp [= BN_ucmp]
632 (Note that only the 'mod' functions are actually for fields GF(2^m).
633 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
635 For some functions, an the irreducible polynomial defining a
636 field can be given as an 'unsigned int[]' with strictly
637 decreasing elements giving the indices of those bits that are set;
638 i.e., p[] represents the polynomial
639 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
641 p[0] > p[1] > ... > p[k] = 0.
642 This applies to the following functions:
647 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
648 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
651 BN_GF2m_mod_solve_quad_arr
655 Conversion can be performed by the following functions:
660 bntest.c has additional tests for binary polynomial arithmetic.
662 Two implementations for BN_GF2m_mod_div() are available.
663 The default algorithm simply uses BN_GF2m_mod_inv() and
664 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
665 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
666 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
668 [Sheueling Chang Shantz and Douglas Stebila
669 (Sun Microsystems Laboratories)]
671 *) Add new error code 'ERR_R_DISABLED' that can be used when some
672 functionality is disabled at compile-time.
673 [Douglas Stebila <douglas.stebila@sun.com>]
675 *) Change default behaviour of 'openssl asn1parse' so that more
676 information is visible when viewing, e.g., a certificate:
678 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
679 mode the content of non-printable OCTET STRINGs is output in a
680 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
681 avoid the appearance of a printable string.
682 [Nils Larsch <nla@trustcenter.de>]
684 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
686 EC_GROUP_set_asn1_flag()
687 EC_GROUP_get_asn1_flag()
688 EC_GROUP_set_point_conversion_form()
689 EC_GROUP_get_point_conversion_form()
690 These control ASN1 encoding details:
691 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
692 has been set to OPENSSL_EC_NAMED_CURVE.
693 - Points are encoded in uncompressed form by default; options for
694 asn1_for are as for point2oct, namely
695 POINT_CONVERSION_COMPRESSED
696 POINT_CONVERSION_UNCOMPRESSED
697 POINT_CONVERSION_HYBRID
699 Also add 'seed' and 'seed_len' members to EC_GROUP with access
703 EC_GROUP_get_seed_len()
704 This is used only for ASN1 purposes (so far).
705 [Nils Larsch <nla@trustcenter.de>]
707 *) Add 'field_type' member to EC_METHOD, which holds the NID
708 of the appropriate field type OID. The new function
709 EC_METHOD_get_field_type() returns this value.
710 [Nils Larsch <nla@trustcenter.de>]
717 providing useful interfaces to EC_POINT_point2oct() and
718 EC_POINT_oct2point().
719 [Nils Larsch <nla@trustcenter.de>]
721 *) Change internals of the EC library so that the functions
722 EC_GROUP_set_generator()
723 EC_GROUP_get_generator()
725 EC_GROUP_get_cofactor()
726 are implemented directly in crypto/ec/ec_lib.c and not dispatched
727 to methods, which would lead to unnecessary code duplication when
728 adding different types of curves.
729 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
731 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
732 arithmetic, and such that modified wNAFs are generated
733 (which avoid length expansion in many cases).
736 *) Add a function EC_GROUP_check_discriminant() (defined via
737 EC_METHOD) that verifies that the curve discriminant is non-zero.
739 Add a function EC_GROUP_check() that makes some sanity tests
740 on a EC_GROUP, its generator and order. This includes
741 EC_GROUP_check_discriminant().
742 [Nils Larsch <nla@trustcenter.de>]
744 *) Add ECDSA in new directory crypto/ecdsa/.
746 Add applications 'openssl ecparam' and 'openssl ecdsa'
747 (these are based on 'openssl dsaparam' and 'openssl dsa').
749 ECDSA support is also included in various other files across the
750 library. Most notably,
751 - 'openssl req' now has a '-newkey ecdsa:file' option;
752 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
753 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
754 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
755 them suitable for ECDSA where domain parameters must be
756 extracted before the specific public key;
757 - ECDSA engine support has been added.
758 [Nils Larsch <nla@trustcenter.de>]
760 *) Include some named elliptic curves, and add OIDs from X9.62,
761 SECG, and WAP/WTLS. Each curve can be obtained from the new
763 EC_GROUP_new_by_nid(),
764 and the list of available named curves can be obtained with
765 EC_get_builtin_curves().
766 Also add a 'curve_name' member to EC_GROUP objects, which can be
770 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
772 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
773 was actually never needed) and in BN_mul(). The removal in BN_mul()
774 required a small change in bn_mul_part_recursive() and the addition
775 of the functions bn_cmp_part_words(), bn_sub_part_words() and
776 bn_add_part_words(), which do the same thing as bn_cmp_words(),
777 bn_sub_words() and bn_add_words() except they take arrays with
781 Changes between 0.9.7f and 0.9.7g [XX xxx xxxx]
783 *) Undo Cygwin change.
786 *) Added support for proxy certificates according to RFC 3820.
787 Because they may be a security thread to unaware applications,
788 they must be explicitely allowed in run-time. See
789 docs/HOWTO/proxy_certificates.txt for further information.
792 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
794 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
795 server and client random values. Previously
796 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
797 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
799 This change has negligible security impact because:
801 1. Server and client random values still have 24 bytes of pseudo random
804 2. Server and client random values are sent in the clear in the initial
807 3. The master secret is derived using the premaster secret (48 bytes in
808 size for static RSA ciphersuites) as well as client server and random
811 The OpenSSL team would like to thank the UK NISCC for bringing this issue
814 [Stephen Henson, reported by UK NISCC]
816 *) Use Windows randomness collection on Cygwin.
819 *) Fix hang in EGD/PRNGD query when communication socket is closed
820 prematurely by EGD/PRNGD.
821 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
823 *) Prompt for pass phrases when appropriate for PKCS12 input format.
826 *) Back-port of selected performance improvements from development
827 branch, as well as improved support for PowerPC platforms.
830 *) Add lots of checks for memory allocation failure, error codes to indicate
831 failure and freeing up memory if a failure occurs.
832 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
834 *) Add new -passin argument to dgst.
837 *) Perform some character comparisons of different types in X509_NAME_cmp:
838 this is needed for some certificates that reencode DNs into UTF8Strings
839 (in violation of RFC3280) and can't or wont issue name rollover
843 *) Make an explicit check during certificate validation to see that
844 the CA setting in each certificate on the chain is correct. As a
845 side effect always do the following basic checks on extensions,
846 not just when there's an associated purpose to the check:
848 - if there is an unhandled critical extension (unless the user
849 has chosen to ignore this fault)
850 - if the path length has been exceeded (if one is set at all)
851 - that certain extensions fit the associated purpose (if one has
855 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
857 *) Avoid a race condition when CRLs are checked in a multi threaded
858 environment. This would happen due to the reordering of the revoked
859 entries during signature checking and serial number lookup. Now the
860 encoding is cached and the serial number sort performed under a lock.
861 Add new STACK function sk_is_sorted().
864 *) Add Delta CRL to the extension code.
867 *) Various fixes to s3_pkt.c so alerts are sent properly.
868 [David Holmes <d.holmes@f5.com>]
870 *) Reduce the chances of duplicate issuer name and serial numbers (in
871 violation of RFC3280) using the OpenSSL certificate creation utilities.
872 This is done by creating a random 64 bit value for the initial serial
873 number when a serial number file is created or when a self signed
874 certificate is created using 'openssl req -x509'. The initial serial
875 number file is created using 'openssl x509 -next_serial' in CA.pl
876 rather than being initialized to 1.
879 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
881 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
882 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
883 [Joe Orton, Steve Henson]
885 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
887 [Joe Orton, Steve Henson]
889 *) Make it possible to have multiple active certificates with the same
890 subject in the CA index file. This is done only if the keyword
891 'unique_subject' is set to 'no' in the main CA section (default
892 if 'CA_default') of the configuration file. The value is saved
893 with the database itself in a separate index attribute file,
894 named like the index file with '.attr' appended to the name.
897 *) X509 verify fixes. Disable broken certificate workarounds when
898 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
899 keyUsage extension present. Don't accept CRLs with unhandled critical
900 extensions: since verify currently doesn't process CRL extensions this
901 rejects a CRL with *any* critical extensions. Add new verify error codes
905 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
906 A clarification of RFC2560 will require the use of OCTET STRINGs and
907 some implementations cannot handle the current raw format. Since OpenSSL
908 copies and compares OCSP nonces as opaque blobs without any attempt at
909 parsing them this should not create any compatibility issues.
912 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
913 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
914 this HMAC (and other) operations are several times slower than OpenSSL
918 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
919 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
921 *) Use the correct content when signing type "other".
924 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
926 *) Fix various bugs revealed by running the NISCC test suite:
928 Stop out of bounds reads in the ASN1 code when presented with
929 invalid tags (CAN-2003-0543 and CAN-2003-0544).
931 Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
933 If verify callback ignores invalid public key errors don't try to check
934 certificate signature with the NULL public key.
938 *) New -ignore_err option in ocsp application to stop the server
939 exiting on the first error in a request.
942 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
943 if the server requested one: as stated in TLS 1.0 and SSL 3.0
947 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
948 extra data after the compression methods not only for TLS 1.0
949 but also for SSL 3.0 (as required by the specification).
950 [Bodo Moeller; problem pointed out by Matthias Loepfe]
952 *) Change X509_certificate_type() to mark the key as exported/exportable
953 when it's 512 *bits* long, not 512 bytes.
956 *) Change AES_cbc_encrypt() so it outputs exact multiple of
957 blocks during encryption.
960 *) Various fixes to base64 BIO and non blocking I/O. On write
961 flushes were not handled properly if the BIO retried. On read
962 data was not being buffered properly and had various logic bugs.
963 This also affects blocking I/O when the data being decoded is a
967 *) Various S/MIME bugfixes and compatibility changes:
968 output correct application/pkcs7 MIME type if
969 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
970 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
971 of files as .eml work). Correctly handle very long lines in MIME
975 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
977 *) Countermeasure against the Klima-Pokorny-Rosa extension of
978 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
979 a protocol version number mismatch like a decryption error
980 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
983 *) Turn on RSA blinding by default in the default implementation
984 to avoid a timing attack. Applications that don't want it can call
985 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
986 They would be ill-advised to do so in most cases.
987 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
989 *) Change RSA blinding code so that it works when the PRNG is not
990 seeded (in this case, the secret RSA exponent is abused as
991 an unpredictable seed -- if it is not unpredictable, there
992 is no point in blinding anyway). Make RSA blinding thread-safe
993 by remembering the creator's thread ID in rsa->blinding and
994 having all other threads use local one-time blinding factors
995 (this requires more computation than sharing rsa->blinding, but
996 avoids excessive locking; and if an RSA object is not shared
997 between threads, blinding will still be very fast).
1000 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1001 ENGINE as defaults for all supported algorithms irrespective of
1002 the 'flags' parameter. 'flags' is now honoured, so applications
1003 should make sure they are passing it correctly.
1006 *) Target "mingw" now allows native Windows code to be generated in
1007 the Cygwin environment as well as with the MinGW compiler.
1010 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1012 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1013 via timing by performing a MAC computation even if incorrrect
1014 block cipher padding has been found. This is a countermeasure
1015 against active attacks where the attacker has to distinguish
1016 between bad padding and a MAC verification error. (CAN-2003-0078)
1018 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1019 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1020 Martin Vuagnoux (EPFL, Ilion)]
1022 *) Make the no-err option work as intended. The intention with no-err
1023 is not to have the whole error stack handling routines removed from
1024 libcrypto, it's only intended to remove all the function name and
1025 reason texts, thereby removing some of the footprint that may not
1026 be interesting if those errors aren't displayed anyway.
1028 NOTE: it's still possible for any application or module to have it's
1029 own set of error texts inserted. The routines are there, just not
1030 used by default when no-err is given.
1033 *) Add support for FreeBSD on IA64.
1034 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1036 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1037 Kerberos function mit_des_cbc_cksum(). Before this change,
1038 the value returned by DES_cbc_cksum() was like the one from
1039 mit_des_cbc_cksum(), except the bytes were swapped.
1040 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1042 *) Allow an application to disable the automatic SSL chain building.
1043 Before this a rather primitive chain build was always performed in
1044 ssl3_output_cert_chain(): an application had no way to send the
1045 correct chain if the automatic operation produced an incorrect result.
1047 Now the chain builder is disabled if either:
1049 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1051 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1053 The reasoning behind this is that an application would not want the
1054 auto chain building to take place if extra chain certificates are
1055 present and it might also want a means of sending no additional
1056 certificates (for example the chain has two certificates and the
1060 *) Add the possibility to build without the ENGINE framework.
1061 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1063 *) Under Win32 gmtime() can return NULL: check return value in
1064 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1067 *) DSA routines: under certain error conditions uninitialized BN objects
1068 could be freed. Solution: make sure initialization is performed early
1069 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1070 Nils Larsch <nla@trustcenter.de> via PR#459)
1073 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1074 checked on reconnect on the client side, therefore session resumption
1075 could still fail with a "ssl session id is different" error. This
1076 behaviour is masked when SSL_OP_ALL is used due to
1077 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1078 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1079 followup to PR #377.
1082 *) IA-32 assembler support enhancements: unified ELF targets, support
1083 for SCO/Caldera platforms, fix for Cygwin shared build.
1086 *) Add support for FreeBSD on sparc64. As a consequence, support for
1087 FreeBSD on non-x86 processors is separate from x86 processors on
1088 the config script, much like the NetBSD support.
1089 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1091 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1093 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1096 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1097 code (06) was taken as the first octet of the session ID and the last
1098 octet was ignored consequently. As a result SSLv2 client side session
1099 caching could not have worked due to the session ID mismatch between
1101 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1105 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1106 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1110 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1111 seems that in spite of existing for more than a year, many application
1112 author have done nothing to provide the necessary callbacks, which
1113 means that this particular engine will not work properly anywhere.
1114 This is a very unfortunate situation which forces us, in the name
1115 of usability, to give the hw_ncipher.c a static lock, which is part
1117 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1118 appear in 0.9.8 or later. We EXPECT application authors to have
1119 dealt properly with this when 0.9.8 is released (unless we actually
1120 make such changes in the libcrypto locking code that changes will
1121 have to be made anyway).
1124 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1125 octets have been read, EOF or an error occurs. Without this change
1126 some truncated ASN1 structures will not produce an error.
1129 *) Disable Heimdal support, since it hasn't been fully implemented.
1130 Still give the possibility to force the use of Heimdal, but with
1131 warnings and a request that patches get sent to openssl-dev.
1134 *) Add the VC-CE target, introduce the WINCE sysname, and add
1135 INSTALL.WCE and appropriate conditionals to make it build.
1136 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1138 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1139 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1140 edit numbers of the version.
1141 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1143 *) Introduce safe string copy and catenation functions
1144 (BUF_strlcpy() and BUF_strlcat()).
1145 [Ben Laurie (CHATS) and Richard Levitte]
1147 *) Avoid using fixed-size buffers for one-line DNs.
1148 [Ben Laurie (CHATS)]
1150 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1151 resizing buffers containing secrets, and use where appropriate.
1152 [Ben Laurie (CHATS)]
1154 *) Avoid using fixed size buffers for configuration file location.
1155 [Ben Laurie (CHATS)]
1157 *) Avoid filename truncation for various CA files.
1158 [Ben Laurie (CHATS)]
1160 *) Use sizeof in preference to magic numbers.
1161 [Ben Laurie (CHATS)]
1163 *) Avoid filename truncation in cert requests.
1164 [Ben Laurie (CHATS)]
1166 *) Add assertions to check for (supposedly impossible) buffer
1168 [Ben Laurie (CHATS)]
1170 *) Don't cache truncated DNS entries in the local cache (this could
1171 potentially lead to a spoofing attack).
1172 [Ben Laurie (CHATS)]
1174 *) Fix various buffers to be large enough for hex/decimal
1175 representations in a platform independent manner.
1176 [Ben Laurie (CHATS)]
1178 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1179 resizing buffers containing secrets, and use where appropriate.
1180 [Ben Laurie (CHATS)]
1182 *) Add BIO_indent() to avoid much slightly worrying code to do
1184 [Ben Laurie (CHATS)]
1186 *) Convert sprintf()/BIO_puts() to BIO_printf().
1187 [Ben Laurie (CHATS)]
1189 *) buffer_gets() could terminate with the buffer only half
1191 [Ben Laurie (CHATS)]
1193 *) Add assertions to prevent user-supplied crypto functions from
1194 overflowing internal buffers by having large block sizes, etc.
1195 [Ben Laurie (CHATS)]
1197 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1199 [Ben Laurie (CHATS)]
1201 *) Eliminate unused copy of key in RC4.
1202 [Ben Laurie (CHATS)]
1204 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1205 [Ben Laurie (CHATS)]
1207 *) Fix off-by-one error in EGD path.
1208 [Ben Laurie (CHATS)]
1210 *) If RANDFILE path is too long, ignore instead of truncating.
1211 [Ben Laurie (CHATS)]
1213 *) Eliminate unused and incorrectly sized X.509 structure
1215 [Ben Laurie (CHATS)]
1217 *) Eliminate unused and dangerous function knumber().
1218 [Ben Laurie (CHATS)]
1220 *) Eliminate unused and dangerous structure, KSSL_ERR.
1221 [Ben Laurie (CHATS)]
1223 *) Protect against overlong session ID context length in an encoded
1224 session object. Since these are local, this does not appear to be
1226 [Ben Laurie (CHATS)]
1228 *) Change from security patch (see 0.9.6e below) that did not affect
1229 the 0.9.6 release series:
1231 Remote buffer overflow in SSL3 protocol - an attacker could
1232 supply an oversized master key in Kerberos-enabled versions.
1234 [Ben Laurie (CHATS)]
1236 *) Change the SSL kerb5 codes to match RFC 2712.
1239 *) Make -nameopt work fully for req and add -reqopt switch.
1240 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1242 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1243 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1245 *) Make sure tests can be performed even if the corresponding algorithms
1246 have been removed entirely. This was also the last step to make
1247 OpenSSL compilable with DJGPP under all reasonable conditions.
1248 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1250 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1251 to allow version independent disabling of normally unselected ciphers,
1252 which may be activated as a side-effect of selecting a single cipher.
1254 (E.g., cipher list string "RSA" enables ciphersuites that are left
1255 out of "ALL" because they do not provide symmetric encryption.
1256 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1257 [Lutz Jaenicke, Bodo Moeller]
1259 *) Add appropriate support for separate platform-dependent build
1260 directories. The recommended way to make a platform-dependent
1261 build directory is the following (tested on Linux), maybe with
1264 # Place yourself outside of the OpenSSL source tree. In
1265 # this example, the environment variable OPENSSL_SOURCE
1266 # is assumed to contain the absolute OpenSSL source directory.
1267 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1268 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1269 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1270 mkdir -p `dirname $F`
1271 ln -s $OPENSSL_SOURCE/$F $F
1274 To be absolutely sure not to disturb the source tree, a "make clean"
1275 is a good thing. If it isn't successfull, don't worry about it,
1276 it probably means the source directory is very clean.
1279 *) Make sure any ENGINE control commands make local copies of string
1280 pointers passed to them whenever necessary. Otherwise it is possible
1281 the caller may have overwritten (or deallocated) the original string
1282 data when a later ENGINE operation tries to use the stored values.
1283 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1285 *) Improve diagnostics in file reading and command-line digests.
1286 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1288 *) Add AES modes CFB and OFB to the object database. Correct an
1289 error in AES-CFB decryption.
1292 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1293 allows existing EVP_CIPHER_CTX structures to be reused after
1294 calling EVP_*Final(). This behaviour is used by encryption
1295 BIOs and some applications. This has the side effect that
1296 applications must explicitly clean up cipher contexts with
1297 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1300 *) Check the values of dna and dnb in bn_mul_recursive before calling
1301 bn_mul_comba (a non zero value means the a or b arrays do not contain
1302 n2 elements) and fallback to bn_mul_normal if either is not zero.
1305 *) Fix escaping of non-ASCII characters when using the -subj option
1306 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1309 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1310 form for "surname", serialNumber has no short form.
1311 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1312 therefore remove "mail" short name for "internet 7".
1313 The OID for unique identifiers in X509 certificates is
1314 x500UniqueIdentifier, not uniqueIdentifier.
1315 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1318 *) Add an "init" command to the ENGINE config module and auto initialize
1319 ENGINEs. Without any "init" command the ENGINE will be initialized
1320 after all ctrl commands have been executed on it. If init=1 the
1321 ENGINE is initailized at that point (ctrls before that point are run
1322 on the uninitialized ENGINE and after on the initialized one). If
1323 init=0 then the ENGINE will not be iniatialized at all.
1326 *) Fix the 'app_verify_callback' interface so that the user-defined
1327 argument is actually passed to the callback: In the
1328 SSL_CTX_set_cert_verify_callback() prototype, the callback
1329 declaration has been changed from
1332 int (*cb)(X509_STORE_CTX *,void *);
1333 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1334 i=s->ctx->app_verify_callback(&ctx)
1335 has been changed into
1336 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1338 To update applications using SSL_CTX_set_cert_verify_callback(),
1339 a dummy argument can be added to their callback functions.
1340 [D. K. Smetters <smetters@parc.xerox.com>]
1342 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1343 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1345 *) Add and OPENSSL_LOAD_CONF define which will cause
1346 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1347 This allows older applications to transparently support certain
1348 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1349 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1350 load the config file and OPENSSL_add_all_algorithms_conf() which will
1351 always load it have also been added.
1354 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1355 Adjust NIDs and EVP layer.
1356 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1358 *) Config modules support in openssl utility.
1360 Most commands now load modules from the config file,
1361 though in a few (such as version) this isn't done
1362 because it couldn't be used for anything.
1364 In the case of ca and req the config file used is
1365 the same as the utility itself: that is the -config
1366 command line option can be used to specify an
1370 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1371 use "openssl_conf" if filename is NULL use default openssl config file.
1374 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1375 config section name. Add a new flag to tolerate a missing config file
1376 and move code to CONF_modules_load_file().
1379 *) Support for crypto accelerator cards from Accelerated Encryption
1380 Processing, www.aep.ie. (Use engine 'aep')
1381 The support was copied from 0.9.6c [engine] and adapted/corrected
1382 to work with the new engine framework.
1383 [AEP Inc. and Richard Levitte]
1385 *) Support for SureWare crypto accelerator cards from Baltimore
1386 Technologies. (Use engine 'sureware')
1387 The support was copied from 0.9.6c [engine] and adapted
1388 to work with the new engine framework.
1391 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1392 make the newer ENGINE framework commands for the CHIL engine work.
1393 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1395 *) Make it possible to produce shared libraries on ReliantUNIX.
1396 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1398 *) Add the configuration target debug-linux-ppro.
1399 Make 'openssl rsa' use the general key loading routines
1400 implemented in apps.c, and make those routines able to
1401 handle the key format FORMAT_NETSCAPE and the variant
1403 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1405 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1406 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1408 *) Add -keyform to rsautl, and document -engine.
1409 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1411 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1412 BIO_R_NO_SUCH_FILE error code rather than the generic
1413 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1416 *) Add new functions
1418 ERR_peek_last_error_line
1419 ERR_peek_last_error_line_data.
1420 These are similar to
1423 ERR_peek_error_line_data,
1424 but report on the latest error recorded rather than the first one
1425 still in the error queue.
1426 [Ben Laurie, Bodo Moeller]
1428 *) default_algorithms option in ENGINE config module. This allows things
1430 default_algorithms = ALL
1431 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1434 *) Prelminary ENGINE config module.
1437 *) New experimental application configuration code.
1440 *) Change the AES code to follow the same name structure as all other
1441 symmetric ciphers, and behave the same way. Move everything to
1442 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1443 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1445 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1446 [Ben Laurie and Theo de Raadt]
1448 *) Add option to output public keys in req command.
1449 [Massimiliano Pala madwolf@openca.org]
1451 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1452 (up to about 10% better than before for P-192 and P-224).
1455 *) New functions/macros
1457 SSL_CTX_set_msg_callback(ctx, cb)
1458 SSL_CTX_set_msg_callback_arg(ctx, arg)
1459 SSL_set_msg_callback(ssl, cb)
1460 SSL_set_msg_callback_arg(ssl, arg)
1462 to request calling a callback function
1464 void cb(int write_p, int version, int content_type,
1465 const void *buf, size_t len, SSL *ssl, void *arg)
1467 whenever a protocol message has been completely received
1468 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1469 protocol version according to which the SSL library interprets
1470 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1471 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1472 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1473 specification (change_cipher_spec(20), alert(21), handshake(22)).
1474 'buf' and 'len' point to the actual message, 'ssl' to the
1475 SSL object, and 'arg' is the application-defined value set by
1476 SSL[_CTX]_set_msg_callback_arg().
1478 'openssl s_client' and 'openssl s_server' have new '-msg' options
1479 to enable a callback that displays all protocol messages.
1482 *) Change the shared library support so shared libraries are built as
1483 soon as the corresponding static library is finished, and thereby get
1484 openssl and the test programs linked against the shared library.
1485 This still only happens when the keyword "shard" has been given to
1486 the configuration scripts.
1488 NOTE: shared library support is still an experimental thing, and
1489 backward binary compatibility is still not guaranteed.
1490 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1492 *) Add support for Subject Information Access extension.
1493 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1495 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1496 additional bytes when new memory had to be allocated, not just
1497 when reusing an existing buffer.
1500 *) New command line and configuration option 'utf8' for the req command.
1501 This allows field values to be specified as UTF8 strings.
1504 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1505 runs for the former and machine-readable output for the latter.
1508 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1509 of the e-mail address in the DN (i.e., it will go into a certificate
1510 extension only). The new configuration file option 'email_in_dn = no'
1511 has the same effect.
1512 [Massimiliano Pala madwolf@openca.org]
1514 *) Change all functions with names starting with des_ to be starting
1515 with DES_ instead. Add wrappers that are compatible with libdes,
1516 but are named _ossl_old_des_*. Finally, add macros that map the
1517 des_* symbols to the corresponding _ossl_old_des_* if libdes
1518 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1519 desired, the des_* symbols will be mapped to DES_*, with one
1522 Since we provide two compatibility mappings, the user needs to
1523 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1524 compatibility is desired. The default (i.e., when that macro
1525 isn't defined) is OpenSSL 0.9.6c compatibility.
1527 There are also macros that enable and disable the support of old
1528 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1529 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1530 are defined, the default will apply: to support the old des routines.
1532 In either case, one must include openssl/des.h to get the correct
1533 definitions. Do not try to just include openssl/des_old.h, that
1536 NOTE: This is a major break of an old API into a new one. Software
1537 authors are encouraged to switch to the DES_ style functions. Some
1538 time in the future, des_old.h and the libdes compatibility functions
1539 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1540 default), and then completely removed.
1543 *) Test for certificates which contain unsupported critical extensions.
1544 If such a certificate is found during a verify operation it is
1545 rejected by default: this behaviour can be overridden by either
1546 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1547 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1548 X509_supported_extension() has also been added which returns 1 if a
1549 particular extension is supported.
1552 *) Modify the behaviour of EVP cipher functions in similar way to digests
1553 to retain compatibility with existing code.
1556 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1557 compatibility with existing code. In particular the 'ctx' parameter does
1558 not have to be to be initialized before the call to EVP_DigestInit() and
1559 it is tidied up after a call to EVP_DigestFinal(). New function
1560 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1561 EVP_MD_CTX_copy() changed to not require the destination to be
1562 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1563 requires the destination to be valid.
1565 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1566 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1569 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1570 so that complete 'Handshake' protocol structures are kept in memory
1571 instead of overwriting 'msg_type' and 'length' with 'body' data.
1574 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1575 [Massimo Santin via Richard Levitte]
1577 *) Major restructuring to the underlying ENGINE code. This includes
1578 reduction of linker bloat, separation of pure "ENGINE" manipulation
1579 (initialisation, etc) from functionality dealing with implementations
1580 of specific crypto iterfaces. This change also introduces integrated
1581 support for symmetric ciphers and digest implementations - so ENGINEs
1582 can now accelerate these by providing EVP_CIPHER and EVP_MD
1583 implementations of their own. This is detailed in crypto/engine/README
1584 as it couldn't be adequately described here. However, there are a few
1585 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1586 were changed in the original introduction of ENGINE code have now
1587 reverted back - the hooking from this code to ENGINE is now a good
1588 deal more passive and at run-time, operations deal directly with
1589 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1590 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1591 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1592 they were not being used by the framework as there is no concept of a
1593 BIGNUM_METHOD and they could not be generalised to the new
1594 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1595 ENGINE_cpy() has been removed as it cannot be consistently defined in
1599 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1602 *) Change mkdef.pl to sort symbols that get the same entry number,
1603 and make sure the automatically generated functions ERR_load_*
1604 become part of libeay.num as well.
1607 *) New function SSL_renegotiate_pending(). This returns true once
1608 renegotiation has been requested (either SSL_renegotiate() call
1609 or HelloRequest/ClientHello receveived from the peer) and becomes
1610 false once a handshake has been completed.
1611 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1612 sends a HelloRequest, but does not ensure that a handshake takes
1613 place. SSL_renegotiate_pending() is useful for checking if the
1614 client has followed the request.)
1617 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1618 By default, clients may request session resumption even during
1619 renegotiation (if session ID contexts permit); with this option,
1620 session resumption is possible only in the first handshake.
1622 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1623 more bits available for options that should not be part of
1624 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1627 *) Add some demos for certificate and certificate request creation.
1630 *) Make maximum certificate chain size accepted from the peer application
1631 settable (SSL*_get/set_max_cert_list()), as proposed by
1632 "Douglas E. Engert" <deengert@anl.gov>.
1635 *) Add support for shared libraries for Unixware-7
1636 (Boyd Lynn Gerber <gerberb@zenez.com>).
1639 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1640 be done prior to destruction. Use this to unload error strings from
1641 ENGINEs that load their own error strings. NB: This adds two new API
1642 functions to "get" and "set" this destroy handler in an ENGINE.
1645 *) Alter all existing ENGINE implementations (except "openssl" and
1646 "openbsd") to dynamically instantiate their own error strings. This
1647 makes them more flexible to be built both as statically-linked ENGINEs
1648 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1649 Also, add stub code to each that makes building them as self-contained
1650 shared-libraries easier (see README.ENGINE).
1653 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1654 implementations into applications that are completely implemented in
1655 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1656 commands that can be used to configure what shared-library to load and
1657 to control aspects of the way it is handled. Also, made an update to
1658 the README.ENGINE file that brings its information up-to-date and
1659 provides some information and instructions on the "dynamic" ENGINE
1660 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1663 *) Make it possible to unload ranges of ERR strings with a new
1664 "ERR_unload_strings" function.
1667 *) Add a copy() function to EVP_MD.
1670 *) Make EVP_MD routines take a context pointer instead of just the
1671 md_data void pointer.
1674 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1675 that the digest can only process a single chunk of data
1676 (typically because it is provided by a piece of
1677 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1678 is only going to provide a single chunk of data, and hence the
1679 framework needn't accumulate the data for oneshot drivers.
1682 *) As with "ERR", make it possible to replace the underlying "ex_data"
1683 functions. This change also alters the storage and management of global
1684 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1685 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1686 index counters. The API functions that use this state have been changed
1687 to take a "class_index" rather than pointers to the class's local STACK
1688 and counter, and there is now an API function to dynamically create new
1689 classes. This centralisation allows us to (a) plug a lot of the
1690 thread-safety problems that existed, and (b) makes it possible to clean
1691 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1692 such data would previously have always leaked in application code and
1693 workarounds were in place to make the memory debugging turn a blind eye
1694 to it. Application code that doesn't use this new function will still
1695 leak as before, but their memory debugging output will announce it now
1696 rather than letting it slide.
1698 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1699 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1700 has a return value to indicate success or failure.
1703 *) Make it possible to replace the underlying "ERR" functions such that the
1704 global state (2 LHASH tables and 2 locks) is only used by the "default"
1705 implementation. This change also adds two functions to "get" and "set"
1706 the implementation prior to it being automatically set the first time
1707 any other ERR function takes place. Ie. an application can call "get",
1708 pass the return value to a module it has just loaded, and that module
1709 can call its own "set" function using that value. This means the
1710 module's "ERR" operations will use (and modify) the error state in the
1711 application and not in its own statically linked copy of OpenSSL code.
1714 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1715 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1716 the operation, and provides a more encapsulated way for external code
1717 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1718 to use these functions rather than manually incrementing the counts.
1720 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1723 *) Add EVP test program.
1726 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1729 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1730 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1731 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1732 These allow a CRL to be built without having to access X509_CRL fields
1733 directly. Modify 'ca' application to use new functions.
1736 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1737 bug workarounds. Rollback attack detection is a security feature.
1738 The problem will only arise on OpenSSL servers when TLSv1 is not
1739 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1740 Software authors not wanting to support TLSv1 will have special reasons
1741 for their choice and can explicitly enable this option.
1742 [Bodo Moeller, Lutz Jaenicke]
1744 *) Rationalise EVP so it can be extended: don't include a union of
1745 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1746 (similar to those existing for EVP_CIPHER_CTX).
1751 EVP_MD_CTX_init(&md); /* new function call */
1752 EVP_DigestInit(&md, EVP_sha1());
1753 EVP_DigestUpdate(&md, in, len);
1754 EVP_DigestFinal(&md, out, NULL);
1755 EVP_MD_CTX_cleanup(&md); /* new function call */
1759 *) Make DES key schedule conform to the usual scheme, as well as
1760 correcting its structure. This means that calls to DES functions
1761 now have to pass a pointer to a des_key_schedule instead of a
1762 plain des_key_schedule (which was actually always a pointer
1765 des_key_schedule ks;
1767 des_set_key_checked(..., &ks);
1768 des_ncbc_encrypt(..., &ks, ...);
1770 (Note that a later change renames 'des_...' into 'DES_...'.)
1773 *) Initial reduction of linker bloat: the use of some functions, such as
1774 PEM causes large amounts of unused functions to be linked in due to
1775 poor organisation. For example pem_all.c contains every PEM function
1776 which has a knock on effect of linking in large amounts of (unused)
1777 ASN1 code. Grouping together similar functions and splitting unrelated
1778 functions prevents this.
1781 *) Cleanup of EVP macros.
1784 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1785 correct _ecb suffix.
1788 *) Add initial OCSP responder support to ocsp application. The
1789 revocation information is handled using the text based index
1790 use by the ca application. The responder can either handle
1791 requests generated internally, supplied in files (for example
1792 via a CGI script) or using an internal minimal server.
1795 *) Add configuration choices to get zlib compression for TLS.
1798 *) Changes to Kerberos SSL for RFC 2712 compliance:
1799 1. Implemented real KerberosWrapper, instead of just using
1800 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1801 2. Implemented optional authenticator field of KerberosWrapper.
1803 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1804 and authenticator structs; see crypto/krb5/.
1806 Generalized Kerberos calls to support multiple Kerberos libraries.
1807 [Vern Staats <staatsvr@asc.hpc.mil>,
1808 Jeffrey Altman <jaltman@columbia.edu>
1809 via Richard Levitte]
1811 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1812 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1813 values for each of the key sizes rather than having just
1814 parameters (and 'speed' generating keys each time).
1817 *) Speed up EVP routines.
1820 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1821 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1822 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1823 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1825 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1826 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1827 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1830 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1832 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1835 *) Added the OS2-EMX target.
1836 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1838 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1839 to support NCONF routines in extension code. New function CONF_set_nconf()
1840 to allow functions which take an NCONF to also handle the old LHASH
1841 structure: this means that the old CONF compatible routines can be
1842 retained (in particular wrt extensions) without having to duplicate the
1843 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1846 *) Enhance the general user interface with mechanisms for inner control
1847 and with possibilities to have yes/no kind of prompts.
1850 *) Change all calls to low level digest routines in the library and
1851 applications to use EVP. Add missing calls to HMAC_cleanup() and
1852 don't assume HMAC_CTX can be copied using memcpy().
1853 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1855 *) Add the possibility to control engines through control names but with
1856 arbitrary arguments instead of just a string.
1857 Change the key loaders to take a UI_METHOD instead of a callback
1858 function pointer. NOTE: this breaks binary compatibility with earlier
1859 versions of OpenSSL [engine].
1860 Adapt the nCipher code for these new conditions and add a card insertion
1864 *) Enhance the general user interface with mechanisms to better support
1865 dialog box interfaces, application-defined prompts, the possibility
1866 to use defaults (for example default passwords from somewhere else)
1867 and interrupts/cancellations.
1870 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1871 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1874 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1875 tidy up some unnecessarily weird code in 'sk_new()').
1876 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1878 *) Change the key loading routines for ENGINEs to use the same kind
1879 callback (pem_password_cb) as all other routines that need this
1883 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1884 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1885 than this minimum value is recommended.
1888 *) New random seeder for OpenVMS, using the system process statistics
1889 that are easily reachable.
1892 *) Windows apparently can't transparently handle global
1893 variables defined in DLLs. Initialisations such as:
1895 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1897 wont compile. This is used by the any applications that need to
1898 declare their own ASN1 modules. This was fixed by adding the option
1899 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1900 needed for static libraries under Win32.
1903 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1904 setting of purpose and trust fields. New X509_STORE trust and
1905 purpose functions and tidy up setting in other SSL functions.
1908 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1909 structure. These are inherited by X509_STORE_CTX when it is
1910 initialised. This allows various defaults to be set in the
1911 X509_STORE structure (such as flags for CRL checking and custom
1912 purpose or trust settings) for functions which only use X509_STORE_CTX
1913 internally such as S/MIME.
1915 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1916 trust settings if they are not set in X509_STORE. This allows X509_STORE
1917 purposes and trust (in S/MIME for example) to override any set by default.
1919 Add command line options for CRL checking to smime, s_client and s_server
1923 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1924 are set then the CRL is looked up in the X509_STORE structure and
1925 its validity and signature checked, then if the certificate is found
1926 in the CRL the verify fails with a revoked error.
1928 Various new CRL related callbacks added to X509_STORE_CTX structure.
1930 Command line options added to 'verify' application to support this.
1932 This needs some additional work, such as being able to handle multiple
1933 CRLs with different times, extension based lookup (rather than just
1934 by subject name) and ultimately more complete V2 CRL extension
1938 *) Add a general user interface API (crypto/ui/). This is designed
1939 to replace things like des_read_password and friends (backward
1940 compatibility functions using this new API are provided).
1941 The purpose is to remove prompting functions from the DES code
1942 section as well as provide for prompting through dialog boxes in
1943 a window system and the like.
1946 *) Add "ex_data" support to ENGINE so implementations can add state at a
1947 per-structure level rather than having to store it globally.
1950 *) Make it possible for ENGINE structures to be copied when retrieved by
1951 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1952 This causes the "original" ENGINE structure to act like a template,
1953 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1954 operational state can be localised to each ENGINE structure, despite the
1955 fact they all share the same "methods". New ENGINE structures returned in
1956 this case have no functional references and the return value is the single
1957 structural reference. This matches the single structural reference returned
1958 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1962 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1963 needs to match any other type at all we need to manually clear the
1967 *) Changes to the "openssl engine" utility to include;
1968 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1969 about an ENGINE's available control commands.
1970 - executing control commands from command line arguments using the
1971 '-pre' and '-post' switches. '-post' is only used if '-t' is
1972 specified and the ENGINE is successfully initialised. The syntax for
1973 the individual commands are colon-separated, for example;
1974 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1977 *) New dynamic control command support for ENGINEs. ENGINEs can now
1978 declare their own commands (numbers), names (strings), descriptions,
1979 and input types for run-time discovery by calling applications. A
1980 subset of these commands are implicitly classed as "executable"
1981 depending on their input type, and only these can be invoked through
1982 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1983 can be based on user input, config files, etc). The distinction is
1984 that "executable" commands cannot return anything other than a boolean
1985 result and can only support numeric or string input, whereas some
1986 discoverable commands may only be for direct use through
1987 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1988 pointers, or other custom uses. The "executable" commands are to
1989 support parameterisations of ENGINE behaviour that can be
1990 unambiguously defined by ENGINEs and used consistently across any
1991 OpenSSL-based application. Commands have been added to all the
1992 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1993 control over shared-library paths without source code alterations.
1996 *) Changed all ENGINE implementations to dynamically allocate their
1997 ENGINEs rather than declaring them statically. Apart from this being
1998 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1999 this also allows the implementations to compile without using the
2000 internal engine_int.h header.
2003 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2004 'const' value. Any code that should be able to modify a RAND_METHOD
2005 should already have non-const pointers to it (ie. they should only
2006 modify their own ones).
2009 *) Made a variety of little tweaks to the ENGINE code.
2010 - "atalla" and "ubsec" string definitions were moved from header files
2011 to C code. "nuron" string definitions were placed in variables
2012 rather than hard-coded - allowing parameterisation of these values
2013 later on via ctrl() commands.
2014 - Removed unused "#if 0"'d code.
2015 - Fixed engine list iteration code so it uses ENGINE_free() to release
2016 structural references.
2017 - Constified the RAND_METHOD element of ENGINE structures.
2018 - Constified various get/set functions as appropriate and added
2019 missing functions (including a catch-all ENGINE_cpy that duplicates
2020 all ENGINE values onto a new ENGINE except reference counts/state).
2021 - Removed NULL parameter checks in get/set functions. Setting a method
2022 or function to NULL is a way of cancelling out a previously set
2023 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2024 and doesn't justify the extra error symbols and code.
2025 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2026 flags from engine_int.h to engine.h.
2027 - Changed prototypes for ENGINE handler functions (init(), finish(),
2028 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2031 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2032 to the algorithm using long division. The binary algorithm can be
2033 used only if the modulus is odd. On 32-bit systems, it is faster
2034 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2035 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2036 up to 450 bits. In 64-bit environments, the binary algorithm
2037 appears to be advantageous for much longer moduli; here we use it
2038 for moduli up to 2048 bits.
2041 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2042 could not support the combine flag in choice fields.
2045 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2046 extensions from a certificate request to the certificate.
2049 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2050 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2051 file: this allows the display of the certificate about to be
2052 signed to be customised, to allow certain fields to be included
2053 or excluded and extension details. The old system didn't display
2054 multicharacter strings properly, omitted fields not in the policy
2055 and couldn't display additional details such as extensions.
2058 *) Function EC_POINTs_mul for multiple scalar multiplication
2059 of an arbitrary number of elliptic curve points
2060 \sum scalars[i]*points[i],
2061 optionally including the generator defined for the EC_GROUP:
2062 scalar*generator + \sum scalars[i]*points[i].
2064 EC_POINT_mul is a simple wrapper function for the typical case
2065 that the point list has just one item (besides the optional
2069 *) First EC_METHODs for curves over GF(p):
2071 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2072 operations and provides various method functions that can also
2073 operate with faster implementations of modular arithmetic.
2075 EC_GFp_mont_method() reuses most functions that are part of
2076 EC_GFp_simple_method, but uses Montgomery arithmetic.
2078 [Bodo Moeller; point addition and point doubling
2079 implementation directly derived from source code provided by
2080 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2082 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2083 crypto/ec/ec_lib.c):
2085 Curves are EC_GROUP objects (with an optional group generator)
2086 based on EC_METHODs that are built into the library.
2088 Points are EC_POINT objects based on EC_GROUP objects.
2090 Most of the framework would be able to handle curves over arbitrary
2091 finite fields, but as there are no obvious types for fields other
2092 than GF(p), some functions are limited to that for now.
2095 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2096 that the file contains a complete HTTP response.
2099 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2100 change the def and num file printf format specifier from "%-40sXXX"
2101 to "%-39s XXX". The latter will always guarantee a space after the
2102 field while the former will cause them to run together if the field
2103 is 40 of more characters long.
2106 *) Constify the cipher and digest 'method' functions and structures
2107 and modify related functions to take constant EVP_MD and EVP_CIPHER
2111 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2112 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2115 *) Modify EVP_Digest*() routines so they now return values. Although the
2116 internal software routines can never fail additional hardware versions
2120 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2122 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2123 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2126 ERR_R_NESTED_ASN1_ERROR
2128 ERR_R_MISSING_ASN1_EOS
2129 were 4 .. 9, conflicting with
2130 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2132 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2133 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2135 Add new error code 'ERR_R_INTERNAL_ERROR'.
2138 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2142 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2143 sets the subject name for a new request or supersedes the
2144 subject name in a given request. Formats that can be parsed are
2145 'CN=Some Name, OU=myOU, C=IT'
2147 'CN=Some Name/OU=myOU/C=IT'.
2149 Add options '-batch' and '-verbose' to 'openssl req'.
2150 [Massimiliano Pala <madwolf@hackmasters.net>]
2152 *) Introduce the possibility to access global variables through
2153 functions on platform were that's the best way to handle exporting
2154 global variables in shared libraries. To enable this functionality,
2155 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2156 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2157 is normally done by Configure or something similar).
2159 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2160 in the source file (foo.c) like this:
2162 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2163 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2165 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2166 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2168 OPENSSL_DECLARE_GLOBAL(int,foo);
2169 #define foo OPENSSL_GLOBAL_REF(foo)
2170 OPENSSL_DECLARE_GLOBAL(double,bar);
2171 #define bar OPENSSL_GLOBAL_REF(bar)
2173 The #defines are very important, and therefore so is including the
2174 header file everywhere where the defined globals are used.
2176 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2177 of ASN.1 items, but that structure is a bit different.
2179 The largest change is in util/mkdef.pl which has been enhanced with
2180 better and easier to understand logic to choose which symbols should
2181 go into the Windows .def files as well as a number of fixes and code
2182 cleanup (among others, algorithm keywords are now sorted
2183 lexicographically to avoid constant rewrites).
2186 *) In BN_div() keep a copy of the sign of 'num' before writing the
2187 result to 'rm' because if rm==num the value will be overwritten
2188 and produce the wrong result if 'num' is negative: this caused
2189 problems with BN_mod() and BN_nnmod().
2192 *) Function OCSP_request_verify(). This checks the signature on an
2193 OCSP request and verifies the signer certificate. The signer
2194 certificate is just checked for a generic purpose and OCSP request
2198 *) Add OCSP_check_validity() function to check the validity of OCSP
2199 responses. OCSP responses are prepared in real time and may only
2200 be a few seconds old. Simply checking that the current time lies
2201 between thisUpdate and nextUpdate max reject otherwise valid responses
2202 caused by either OCSP responder or client clock inaccuracy. Instead
2203 we allow thisUpdate and nextUpdate to fall within a certain period of
2204 the current time. The age of the response can also optionally be
2205 checked. Two new options -validity_period and -status_age added to
2209 *) If signature or public key algorithm is unrecognized print out its
2210 OID rather that just UNKNOWN.
2213 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2214 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2215 ID to be generated from the issuer certificate alone which can then be
2216 passed to OCSP_id_issuer_cmp().
2219 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2220 ASN1 modules to export functions returning ASN1_ITEM pointers
2221 instead of the ASN1_ITEM structures themselves. This adds several
2222 new macros which allow the underlying ASN1 function/structure to
2223 be accessed transparently. As a result code should not use ASN1_ITEM
2224 references directly (such as &X509_it) but instead use the relevant
2225 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2226 use of the new ASN1 code on platforms where exporting structures
2227 is problematical (for example in shared libraries) but exporting
2228 functions returning pointers to structures is not.
2231 *) Add support for overriding the generation of SSL/TLS session IDs.
2232 These callbacks can be registered either in an SSL_CTX or per SSL.
2233 The purpose of this is to allow applications to control, if they wish,
2234 the arbitrary values chosen for use as session IDs, particularly as it
2235 can be useful for session caching in multiple-server environments. A
2236 command-line switch for testing this (and any client code that wishes
2237 to use such a feature) has been added to "s_server".
2238 [Geoff Thorpe, Lutz Jaenicke]
2240 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2241 of the form '#if defined(...) || defined(...) || ...' and
2242 '#if !defined(...) && !defined(...) && ...'. This also avoids
2243 the growing number of special cases it was previously handling.
2246 *) Make all configuration macros available for application by making
2247 sure they are available in opensslconf.h, by giving them names starting
2248 with "OPENSSL_" to avoid conflicts with other packages and by making
2249 sure e_os2.h will cover all platform-specific cases together with
2251 Additionally, it is now possible to define configuration/platform-
2252 specific names (called "system identities"). In the C code, these
2253 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2254 macro with the name beginning with "OPENSSL_SYS_", which is determined
2255 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2259 *) New option -set_serial to 'req' and 'x509' this allows the serial
2260 number to use to be specified on the command line. Previously self
2261 signed certificates were hard coded with serial number 0 and the
2262 CA options of 'x509' had to use a serial number in a file which was
2266 *) New options to 'ca' utility to support V2 CRL entry extensions.
2267 Currently CRL reason, invalidity date and hold instruction are
2268 supported. Add new CRL extensions to V3 code and some new objects.
2271 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2272 disable standard block padding (aka PKCS#5 padding) in the EVP
2273 API, which was previously mandatory. This means that the data is
2274 not padded in any way and so the total length much be a multiple
2275 of the block size, otherwise an error occurs.
2278 *) Initial (incomplete) OCSP SSL support.
2281 *) New function OCSP_parse_url(). This splits up a URL into its host,
2282 port and path components: primarily to parse OCSP URLs. New -url
2283 option to ocsp utility.
2286 *) New nonce behavior. The return value of OCSP_check_nonce() now
2287 reflects the various checks performed. Applications can decide
2288 whether to tolerate certain situations such as an absent nonce
2289 in a response when one was present in a request: the ocsp application
2290 just prints out a warning. New function OCSP_add1_basic_nonce()
2291 this is to allow responders to include a nonce in a response even if
2292 the request is nonce-less.
2295 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2296 skipped when using openssl x509 multiple times on a single input file,
2297 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2300 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2301 set string type: to handle setting ASN1_TIME structures. Fix ca
2302 utility to correctly initialize revocation date of CRLs.
2305 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2306 the clients preferred ciphersuites and rather use its own preferences.
2307 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2308 Internet Explorer by ensuring unchanged hash method during stepup.
2309 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2312 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2313 to aes and add a new 'exist' option to print out symbols that don't
2317 *) Additional options to ocsp utility to allow flags to be set and
2318 additional certificates supplied.
2321 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2322 OCSP client a number of certificate to only verify the response
2326 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2327 handle the new API. Currently only ECB, CBC modes supported. Add new
2330 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2331 Encryption Standard (AES) Ciphersuites for Transport Layer
2332 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2333 not enabled by default and were not part of the "ALL" ciphersuite
2334 alias because they were not yet official; they could be
2335 explicitly requested by specifying the "AESdraft" ciphersuite
2336 group alias. In the final release of OpenSSL 0.9.7, the group
2337 alias is called "AES" and is part of "ALL".)
2338 [Ben Laurie, Steve Henson, Bodo Moeller]
2340 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2341 request to response.
2344 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2345 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2346 extract information from a certificate request. OCSP_response_create()
2347 creates a response and optionally adds a basic response structure.
2348 OCSP_basic_add1_status() adds a complete single response to a basic
2349 response and returns the OCSP_SINGLERESP structure just added (to allow
2350 extensions to be included for example). OCSP_basic_add1_cert() adds a
2351 certificate to a basic response and OCSP_basic_sign() signs a basic
2352 response with various flags. New helper functions ASN1_TIME_check()
2353 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2354 (converts ASN1_TIME to GeneralizedTime).
2357 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2358 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2359 structure from a certificate. X509_pubkey_digest() digests the public_key
2360 contents: this is used in various key identifiers.
2363 *) Make sk_sort() tolerate a NULL argument.
2364 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2366 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2367 passed by the function are trusted implicitly. If any of them signed the
2368 response then it is assumed to be valid and is not verified.
2371 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2372 to data. This was previously part of the PKCS7 ASN1 code. This
2373 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2374 [Steve Henson, reported by Kenneth R. Robinette
2375 <support@securenetterm.com>]
2377 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2378 routines: without these tracing memory leaks is very painful.
2379 Fix leaks in PKCS12 and PKCS7 routines.
2382 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2383 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2384 effectively meant GeneralizedTime would never be used. Now it
2385 is initialised to -1 but X509_time_adj() now has to check the value
2386 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2387 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2388 [Steve Henson, reported by Kenneth R. Robinette
2389 <support@securenetterm.com>]
2391 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2392 result in a zero length in the ASN1_INTEGER structure which was
2393 not consistent with the structure when d2i_ASN1_INTEGER() was used
2394 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2395 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2396 where it did not print out a minus for negative ASN1_INTEGER.
2399 *) Add summary printout to ocsp utility. The various functions which
2400 convert status values to strings have been renamed to:
2401 OCSP_response_status_str(), OCSP_cert_status_str() and
2402 OCSP_crl_reason_str() and are no longer static. New options
2403 to verify nonce values and to disable verification. OCSP response
2404 printout format cleaned up.
2407 *) Add additional OCSP certificate checks. These are those specified
2408 in RFC2560. This consists of two separate checks: the CA of the
2409 certificate being checked must either be the OCSP signer certificate
2410 or the issuer of the OCSP signer certificate. In the latter case the
2411 OCSP signer certificate must contain the OCSP signing extended key
2412 usage. This check is performed by attempting to match the OCSP
2413 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2414 in the OCSP_CERTID structures of the response.
2417 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2418 and related routines. This uses the standard OpenSSL certificate
2419 verify routines to perform initial checks (just CA validity) and
2420 to obtain the certificate chain. Then additional checks will be
2421 performed on the chain. Currently the root CA is checked to see
2422 if it is explicitly trusted for OCSP signing. This is used to set
2423 a root CA as a global signing root: that is any certificate that
2424 chains to that CA is an acceptable OCSP signing certificate.
2427 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2428 extensions from a separate configuration file.
2429 As when reading extensions from the main configuration file,
2430 the '-extensions ...' option may be used for specifying the
2432 [Massimiliano Pala <madwolf@comune.modena.it>]
2434 *) New OCSP utility. Allows OCSP requests to be generated or
2435 read. The request can be sent to a responder and the output
2436 parsed, outputed or printed in text form. Not complete yet:
2437 still needs to check the OCSP response validity.
2440 *) New subcommands for 'openssl ca':
2441 'openssl ca -status <serial>' prints the status of the cert with
2442 the given serial number (according to the index file).
2443 'openssl ca -updatedb' updates the expiry status of certificates
2445 [Massimiliano Pala <madwolf@comune.modena.it>]
2447 *) New '-newreq-nodes' command option to CA.pl. This is like
2448 '-newreq', but calls 'openssl req' with the '-nodes' option
2449 so that the resulting key is not encrypted.
2450 [Damien Miller <djm@mindrot.org>]
2452 *) New configuration for the GNU Hurd.
2453 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2455 *) Initial code to implement OCSP basic response verify. This
2456 is currently incomplete. Currently just finds the signer's
2457 certificate and verifies the signature on the response.
2460 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2461 value of OPENSSLDIR. This is available via the new '-d' option
2462 to 'openssl version', and is also included in 'openssl version -a'.
2465 *) Allowing defining memory allocation callbacks that will be given
2466 file name and line number information in additional arguments
2467 (a const char* and an int). The basic functionality remains, as
2468 well as the original possibility to just replace malloc(),
2469 realloc() and free() by functions that do not know about these
2470 additional arguments. To register and find out the current
2471 settings for extended allocation functions, the following
2472 functions are provided:
2474 CRYPTO_set_mem_ex_functions
2475 CRYPTO_set_locked_mem_ex_functions
2476 CRYPTO_get_mem_ex_functions
2477 CRYPTO_get_locked_mem_ex_functions
2479 These work the same way as CRYPTO_set_mem_functions and friends.
2480 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2481 extended allocation function is enabled.
2482 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2483 a conventional allocation function is enabled.
2484 [Richard Levitte, Bodo Moeller]
2486 *) Finish off removing the remaining LHASH function pointer casts.
2487 There should no longer be any prototype-casting required when using
2488 the LHASH abstraction, and any casts that remain are "bugs". See
2489 the callback types and macros at the head of lhash.h for details
2490 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2493 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2494 If /dev/[u]random devices are not available or do not return enough
2495 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2497 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2498 /etc/entropy will be queried once each in this sequence, quering stops
2499 when enough entropy was collected without querying more sockets.
2502 *) Change the Unix RAND_poll() variant to be able to poll several
2503 random devices, as specified by DEVRANDOM, until a sufficient amount
2504 of data has been collected. We spend at most 10 ms on each file
2505 (select timeout) and read in non-blocking mode. DEVRANDOM now
2506 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2507 (previously it was just the string "/dev/urandom"), so on typical
2508 platforms the 10 ms delay will never occur.
2509 Also separate out the Unix variant to its own file, rand_unix.c.
2510 For VMS, there's a currently-empty rand_vms.c.
2513 *) Move OCSP client related routines to ocsp_cl.c. These
2514 provide utility functions which an application needing
2515 to issue a request to an OCSP responder and analyse the
2516 response will typically need: as opposed to those which an
2517 OCSP responder itself would need which will be added later.
2519 OCSP_request_sign() signs an OCSP request with an API similar
2520 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2521 response. OCSP_response_get1_basic() extracts basic response
2522 from response. OCSP_resp_find_status(): finds and extracts status
2523 information from an OCSP_CERTID structure (which will be created
2524 when the request structure is built). These are built from lower
2525 level functions which work on OCSP_SINGLERESP structures but
2526 wont normally be used unless the application wishes to examine
2527 extensions in the OCSP response for example.
2529 Replace nonce routines with a pair of functions.
2530 OCSP_request_add1_nonce() adds a nonce value and optionally
2531 generates a random value. OCSP_check_nonce() checks the
2532 validity of the nonce in an OCSP response.
2535 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2536 This doesn't copy the supplied OCSP_CERTID and avoids the
2537 need to free up the newly created id. Change return type
2538 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2539 This can then be used to add extensions to the request.
2540 Deleted OCSP_request_new(), since most of its functionality
2541 is now in OCSP_REQUEST_new() (and the case insensitive name
2542 clash) apart from the ability to set the request name which
2543 will be added elsewhere.
2546 *) Update OCSP API. Remove obsolete extensions argument from
2547 various functions. Extensions are now handled using the new
2548 OCSP extension code. New simple OCSP HTTP function which
2549 can be used to send requests and parse the response.
2552 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2553 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2554 uses the special reorder version of SET OF to sort the attributes
2555 and reorder them to match the encoded order. This resolves a long
2556 standing problem: a verify on a PKCS7 structure just after signing
2557 it used to fail because the attribute order did not match the
2558 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2559 it uses the received order. This is necessary to tolerate some broken
2560 software that does not order SET OF. This is handled by encoding
2561 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2562 to produce the required SET OF.
2565 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2566 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2567 files to get correct declarations of the ASN.1 item variables.
2570 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2571 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2572 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2573 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2574 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2575 ASN1_ITEM and no wrapper functions.
2578 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2579 replace the old function pointer based I/O routines. Change most of
2580 the *_d2i_bio() and *_d2i_fp() functions to use these.
2583 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2584 lines, recognice more "algorithms" that can be deselected, and make
2585 it complain about algorithm deselection that isn't recognised.
2588 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2589 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2590 to use new functions. Add NO_ASN1_OLD which can be set to remove
2591 some old style ASN1 functions: this can be used to determine if old
2592 code will still work when these eventually go away.
2595 *) New extension functions for OCSP structures, these follow the
2596 same conventions as certificates and CRLs.
2599 *) New function X509V3_add1_i2d(). This automatically encodes and
2600 adds an extension. Its behaviour can be customised with various
2601 flags to append, replace or delete. Various wrappers added for
2602 certifcates and CRLs.
2605 *) Fix to avoid calling the underlying ASN1 print routine when
2606 an extension cannot be parsed. Correct a typo in the
2607 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2610 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2611 entries for variables.
2614 *) Add functionality to apps/openssl.c for detecting locking
2615 problems: As the program is single-threaded, all we have
2616 to do is register a locking callback using an array for
2617 storing which locks are currently held by the program.
2620 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2621 SSL_get_ex_data_X509_STORE_idx(), which is used in
2622 ssl_verify_cert_chain() and thus can be called at any time
2623 during TLS/SSL handshakes so that thread-safety is essential.
2624 Unfortunately, the ex_data design is not at all suited
2625 for multi-threaded use, so it probably should be abolished.
2628 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2629 [Broadcom, tweaked and integrated by Geoff Thorpe]
2631 *) Move common extension printing code to new function
2632 X509V3_print_extensions(). Reorganise OCSP print routines and
2633 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2636 *) New function X509_signature_print() to remove duplication in some
2640 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2641 set (this was treated exactly the same as SET OF previously). This
2642 is used to reorder the STACK representing the structure to match the
2643 encoding. This will be used to get round a problem where a PKCS7
2644 structure which was signed could not be verified because the STACK
2645 order did not reflect the encoded order.
2648 *) Reimplement the OCSP ASN1 module using the new code.
2651 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2652 for its ASN1 operations. The old style function pointers still exist
2653 for now but they will eventually go away.
2656 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2657 completely replaces the old ASN1 functionality with a table driven
2658 encoder and decoder which interprets an ASN1_ITEM structure describing
2659 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2660 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2661 has also been converted to the new form.
2664 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2665 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2666 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2667 for negative moduli.
2670 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2671 of not touching the result's sign bit.
2674 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2678 *) Changed the LHASH code to use prototypes for callbacks, and created
2679 macros to declare and implement thin (optionally static) functions
2680 that provide type-safety and avoid function pointer casting for the
2681 type-specific callbacks.
2684 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2686 [Veers Staats <staatsvr@asc.hpc.mil>,
2687 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2689 *) Reformat the FAQ so the different questions and answers can be divided
2690 in sections depending on the subject.
2693 *) Have the zlib compression code load ZLIB.DLL dynamically under
2697 *) New function BN_mod_sqrt for computing square roots modulo a prime
2698 (using the probabilistic Tonelli-Shanks algorithm unless
2699 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2700 be handled deterministically).
2701 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2703 *) Make BN_mod_inverse faster by explicitly handling small quotients
2704 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2705 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2708 *) New function BN_kronecker.
2711 *) Fix BN_gcd so that it works on negative inputs; the result is
2712 positive unless both parameters are zero.
2713 Previously something reasonably close to an infinite loop was
2714 possible because numbers could be growing instead of shrinking
2715 in the implementation of Euclid's algorithm.
2718 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2719 sign of the number in question.
2721 Fix BN_is_word(a,w) to work correctly for w == 0.
2723 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2724 because its test if the absolute value of 'a' equals 'w'.
2725 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2726 it exists mostly for use in the implementations of BN_is_zero(),
2727 BN_is_one(), and BN_is_word().
2730 *) New function BN_swap.
2733 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2734 the exponentiation functions are more likely to produce reasonable
2735 results on negative inputs.
2738 *) Change BN_mod_mul so that the result is always non-negative.
2739 Previously, it could be negative if one of the factors was negative;
2740 I don't think anyone really wanted that behaviour.
2743 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2744 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2745 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2746 and add new functions:
2755 BN_mod_lshift1_quick
2759 These functions always generate non-negative results.
2761 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2762 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2764 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2765 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2766 be reduced modulo m.
2767 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2770 The following entry accidentily appeared in the CHANGES file
2771 distributed with OpenSSL 0.9.7. The modifications described in
2772 it do *not* apply to OpenSSL 0.9.7.
2774 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2775 was actually never needed) and in BN_mul(). The removal in BN_mul()
2776 required a small change in bn_mul_part_recursive() and the addition
2777 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2778 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2779 bn_sub_words() and bn_add_words() except they take arrays with
2784 *) In 'openssl passwd', verify passwords read from the terminal
2785 unless the '-salt' option is used (which usually means that
2786 verification would just waste user's time since the resulting
2787 hash is going to be compared with some given password hash)
2788 or the new '-noverify' option is used.
2790 This is an incompatible change, but it does not affect
2791 non-interactive use of 'openssl passwd' (passwords on the command
2792 line, '-stdin' option, '-in ...' option) and thus should not
2796 *) Remove all references to RSAref, since there's no more need for it.
2799 *) Make DSO load along a path given through an environment variable
2800 (SHLIB_PATH) with shl_load().
2803 *) Constify the ENGINE code as a result of BIGNUM constification.
2804 Also constify the RSA code and most things related to it. In a
2805 few places, most notable in the depth of the ASN.1 code, ugly
2806 casts back to non-const were required (to be solved at a later
2810 *) Make it so the openssl application has all engines loaded by default.
2813 *) Constify the BIGNUM routines a little more.
2816 *) Add the following functions:
2818 ENGINE_load_cswift()
2820 ENGINE_load_atalla()
2822 ENGINE_load_builtin_engines()
2824 That way, an application can itself choose if external engines that
2825 are built-in in OpenSSL shall ever be used or not. The benefit is
2826 that applications won't have to be linked with libdl or other dso
2827 libraries unless it's really needed.
2829 Changed 'openssl engine' to load all engines on demand.
2830 Changed the engine header files to avoid the duplication of some
2831 declarations (they differed!).
2834 *) 'openssl engine' can now list capabilities.
2837 *) Better error reporting in 'openssl engine'.
2840 *) Never call load_dh_param(NULL) in s_server.
2843 *) Add engine application. It can currently list engines by name and
2844 identity, and test if they are actually available.
2847 *) Improve RPM specification file by forcing symbolic linking and making
2848 sure the installed documentation is also owned by root.root.
2849 [Damien Miller <djm@mindrot.org>]
2851 *) Give the OpenSSL applications more possibilities to make use of
2852 keys (public as well as private) handled by engines.
2855 *) Add OCSP code that comes from CertCo.
2858 *) Add VMS support for the Rijndael code.
2861 *) Added untested support for Nuron crypto accelerator.
2864 *) Add support for external cryptographic devices. This code was
2865 previously distributed separately as the "engine" branch.
2866 [Geoff Thorpe, Richard Levitte]
2868 *) Rework the filename-translation in the DSO code. It is now possible to
2869 have far greater control over how a "name" is turned into a filename
2870 depending on the operating environment and any oddities about the
2871 different shared library filenames on each system.
2874 *) Support threads on FreeBSD-elf in Configure.
2877 *) Fix for SHA1 assembly problem with MASM: it produces
2878 warnings about corrupt line number information when assembling
2879 with debugging information. This is caused by the overlapping
2881 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2884 NCONF_get_number() has no error checking at all. As a replacement,
2885 NCONF_get_number_e() is defined (_e for "error checking") and is
2886 promoted strongly. The old NCONF_get_number is kept around for
2887 binary backward compatibility.
2888 Make it possible for methods to load from something other than a BIO,
2889 by providing a function pointer that is given a name instead of a BIO.
2890 For example, this could be used to load configuration data from an
2894 *) Fix for non blocking accept BIOs. Added new I/O special reason
2895 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2896 with non blocking I/O was not possible because no retry code was
2897 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2901 *) Added the beginnings of Rijndael support.
2904 *) Fix for bug in DirectoryString mask setting. Add support for
2905 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2906 to allow certificate printing to more controllable, additional
2907 'certopt' option to 'x509' to allow new printing options to be
2911 *) Clean old EAY MD5 hack from e_os.h.
2914 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
2916 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2917 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
2918 [Joe Orton, Steve Henson]
2920 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
2922 *) Fix additional bug revealed by the NISCC test suite:
2924 Stop bug triggering large recursion when presented with
2925 certain ASN.1 tags (CAN-2003-0851)
2928 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
2930 *) Fix various bugs revealed by running the NISCC test suite:
2932 Stop out of bounds reads in the ASN1 code when presented with
2933 invalid tags (CAN-2003-0543 and CAN-2003-0544).
2935 If verify callback ignores invalid public key errors don't try to check
2936 certificate signature with the NULL public key.
2940 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2941 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2945 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2946 extra data after the compression methods not only for TLS 1.0
2947 but also for SSL 3.0 (as required by the specification).
2948 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2950 *) Change X509_certificate_type() to mark the key as exported/exportable
2951 when it's 512 *bits* long, not 512 bytes.
2954 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
2956 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2957 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2958 a protocol version number mismatch like a decryption error
2959 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2962 *) Turn on RSA blinding by default in the default implementation
2963 to avoid a timing attack. Applications that don't want it can call
2964 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2965 They would be ill-advised to do so in most cases.
2966 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2968 *) Change RSA blinding code so that it works when the PRNG is not
2969 seeded (in this case, the secret RSA exponent is abused as
2970 an unpredictable seed -- if it is not unpredictable, there
2971 is no point in blinding anyway). Make RSA blinding thread-safe
2972 by remembering the creator's thread ID in rsa->blinding and
2973 having all other threads use local one-time blinding factors
2974 (this requires more computation than sharing rsa->blinding, but
2975 avoids excessive locking; and if an RSA object is not shared
2976 between threads, blinding will still be very fast).
2979 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
2981 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2982 via timing by performing a MAC computation even if incorrrect
2983 block cipher padding has been found. This is a countermeasure
2984 against active attacks where the attacker has to distinguish
2985 between bad padding and a MAC verification error. (CAN-2003-0078)
2987 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2988 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2989 Martin Vuagnoux (EPFL, Ilion)]
2991 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2993 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2994 memory from it's contents. This is done with a counter that will
2995 place alternating values in each byte. This can be used to solve
2996 two issues: 1) the removal of calls to memset() by highly optimizing
2997 compilers, and 2) cleansing with other values than 0, since those can
2998 be read through on certain media, for example a swap space on disk.
3001 *) Bugfix: client side session caching did not work with external caching,
3002 because the session->cipher setting was not restored when reloading
3003 from the external cache. This problem was masked, when
3004 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3005 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3008 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3009 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3010 [Zeev Lieber <zeev-l@yahoo.com>]
3012 *) Undo an undocumented change introduced in 0.9.6e which caused
3013 repeated calls to OpenSSL_add_all_ciphers() and
3014 OpenSSL_add_all_digests() to be ignored, even after calling
3018 *) Change the default configuration reader to deal with last line not
3019 being properly terminated.
3022 *) Change X509_NAME_cmp() so it applies the special rules on handling
3023 DN values that are of type PrintableString, as well as RDNs of type
3024 emailAddress where the value has the type ia5String.
3025 [stefank@valicert.com via Richard Levitte]
3027 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3028 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3029 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3030 the bitwise-OR of the two for use by the majority of applications
3031 wanting this behaviour, and update the docs. The documented
3032 behaviour and actual behaviour were inconsistent and had been
3033 changing anyway, so this is more a bug-fix than a behavioural
3035 [Geoff Thorpe, diagnosed by Nadav Har'El]
3037 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3038 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3041 *) Fix initialization code race conditions in
3042 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3043 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3044 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3045 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3046 ssl2_get_cipher_by_char(),
3047 ssl3_get_cipher_by_char().
3048 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3050 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3051 the cached sessions are flushed, as the remove_cb() might use ex_data
3052 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3053 (see [openssl.org #212]).
3054 [Geoff Thorpe, Lutz Jaenicke]
3056 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3057 length, instead of the encoding length to d2i_ASN1_OBJECT.
3060 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3062 *) [In 0.9.6g-engine release:]
3063 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3064 [Lynn Gazis <lgazis@rainbow.com>]
3066 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3068 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3069 and get fix the header length calculation.
3070 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3071 Alon Kantor <alonk@checkpoint.com> (and others),
3074 *) Use proper error handling instead of 'assertions' in buffer
3075 overflow checks added in 0.9.6e. This prevents DoS (the
3076 assertions could call abort()).
3077 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3079 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3081 *) Add various sanity checks to asn1_get_length() to reject
3082 the ASN1 length bytes if they exceed sizeof(long), will appear
3083 negative or the content length exceeds the length of the
3085 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3087 *) Fix cipher selection routines: ciphers without encryption had no flags
3088 for the cipher strength set and where therefore not handled correctly
3089 by the selection routines (PR #130).
3092 *) Fix EVP_dsa_sha macro.
3096 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3097 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3098 that was added in OpenSSL 0.9.6d.
3100 As the countermeasure turned out to be incompatible with some
3101 broken SSL implementations, the new option is part of SSL_OP_ALL.
3102 SSL_OP_ALL is usually employed when compatibility with weird SSL
3103 implementations is desired (e.g. '-bugs' option to 's_client' and
3104 's_server'), so the new option is automatically set in many
3108 *) Changes in security patch:
3110 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3111 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3112 Air Force Materiel Command, USAF, under agreement number
3115 *) Add various sanity checks to asn1_get_length() to reject
3116 the ASN1 length bytes if they exceed sizeof(long), will appear
3117 negative or the content length exceeds the length of the
3118 supplied buffer. (CAN-2002-0659)
3119 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3121 *) Assertions for various potential buffer overflows, not known to
3123 [Ben Laurie (CHATS)]
3125 *) Various temporary buffers to hold ASCII versions of integers were
3126 too small for 64 bit platforms. (CAN-2002-0655)
3127 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3129 *) Remote buffer overflow in SSL3 protocol - an attacker could
3130 supply an oversized session ID to a client. (CAN-2002-0656)
3131 [Ben Laurie (CHATS)]
3133 *) Remote buffer overflow in SSL2 protocol - an attacker could
3134 supply an oversized client master key. (CAN-2002-0656)
3135 [Ben Laurie (CHATS)]
3137 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3139 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3140 encoded as NULL) with id-dsa-with-sha1.
3141 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3143 *) Check various X509_...() return values in apps/req.c.
3144 [Nils Larsch <nla@trustcenter.de>]
3146 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3147 an end-of-file condition would erronously be flagged, when the CRLF
3148 was just at the end of a processed block. The bug was discovered when
3149 processing data through a buffering memory BIO handing the data to a
3150 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3151 <ptsekov@syntrex.com> and Nedelcho Stanev.
3154 *) Implement a countermeasure against a vulnerability recently found
3155 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3156 before application data chunks to avoid the use of known IVs
3157 with data potentially chosen by the attacker.
3160 *) Fix length checks in ssl3_get_client_hello().
3163 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3164 to prevent ssl3_read_internal() from incorrectly assuming that
3165 ssl3_read_bytes() found application data while handshake
3166 processing was enabled when in fact s->s3->in_read_app_data was
3167 merely automatically cleared during the initial handshake.
3168 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3170 *) Fix object definitions for Private and Enterprise: they were not
3171 recognized in their shortname (=lowercase) representation. Extend
3172 obj_dat.pl to issue an error when using undefined keywords instead
3173 of silently ignoring the problem (Svenning Sorensen
3174 <sss@sss.dnsalias.net>).
3177 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3178 generators, i.e. generators other than 2 and 5. (Previously, the
3179 code did not properly initialise the 'add' and 'rem' values to
3180 BN_generate_prime().)
3182 In the new general case, we do not insist that 'generator' is
3183 actually a primitive root: This requirement is rather pointless;
3184 a generator of the order-q subgroup is just as good, if not
3188 *) Map new X509 verification errors to alerts. Discovered and submitted by
3189 Tom Wu <tom@arcot.com>.
3192 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3193 returning non-zero before the data has been completely received
3194 when using non-blocking I/O.
3195 [Bodo Moeller; problem pointed out by John Hughes]
3197 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3198 [Ben Laurie, Lutz Jaenicke]
3200 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3201 Yoram Zahavi <YoramZ@gilian.com>).
3204 *) Add information about CygWin 1.3 and on, and preserve proper
3205 configuration for the versions before that.
3206 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3208 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3209 check whether we deal with a copy of a session and do not delete from
3210 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3211 <izhar@checkpoint.com>.
3214 *) Do not store session data into the internal session cache, if it
3215 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3216 flag is set). Proposed by Aslam <aslam@funk.com>.
3219 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3223 *) [In 0.9.6d-engine release:]
3224 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3225 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3227 *) Add the configuration target linux-s390x.
3228 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3230 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3231 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3232 variable as an indication that a ClientHello message has been
3233 received. As the flag value will be lost between multiple
3234 invocations of ssl3_accept when using non-blocking I/O, the
3235 function may not be aware that a handshake has actually taken
3236 place, thus preventing a new session from being added to the
3239 To avoid this problem, we now set s->new_session to 2 instead of
3240 using a local variable.
3241 [Lutz Jaenicke, Bodo Moeller]
3243 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3244 if the SSL_R_LENGTH_MISMATCH error is detected.
3245 [Geoff Thorpe, Bodo Moeller]
3247 *) New 'shared_ldflag' column in Configure platform table.
3250 *) Fix EVP_CIPHER_mode macro.
3251 ["Dan S. Camper" <dan@bti.net>]
3253 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3254 type, we must throw them away by setting rr->length to 0.
3255 [D P Chang <dpc@qualys.com>]
3257 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3259 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3260 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3261 worked incorrectly for those cases where range = 10..._2 and
3262 3*range is two bits longer than range.)
3265 *) Only add signing time to PKCS7 structures if it is not already
3269 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3270 OBJ_ld_ce should be OBJ_id_ce.
3271 Also some ip-pda OIDs in crypto/objects/objects.txt were
3272 incorrect (cf. RFC 3039).
3273 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3275 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3276 returns early because it has nothing to do.
3277 [Andy Schneider <andy.schneider@bjss.co.uk>]
3279 *) [In 0.9.6c-engine release:]
3280 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3281 [Andy Schneider <andy.schneider@bjss.co.uk>]
3283 *) [In 0.9.6c-engine release:]
3284 Add support for Cryptographic Appliance's keyserver technology.
3285 (Use engine 'keyclient')
3286 [Cryptographic Appliances and Geoff Thorpe]
3288 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3289 is called via tools/c89.sh because arguments have to be
3290 rearranged (all '-L' options must appear before the first object
3292 [Richard Shapiro <rshapiro@abinitio.com>]
3294 *) [In 0.9.6c-engine release:]
3295 Add support for Broadcom crypto accelerator cards, backported
3297 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3299 *) [In 0.9.6c-engine release:]
3300 Add support for SureWare crypto accelerator cards from
3301 Baltimore Technologies. (Use engine 'sureware')
3302 [Baltimore Technologies and Mark Cox]
3304 *) [In 0.9.6c-engine release:]
3305 Add support for crypto accelerator cards from Accelerated
3306 Encryption Processing, www.aep.ie. (Use engine 'aep')
3307 [AEP Inc. and Mark Cox]
3309 *) Add a configuration entry for gcc on UnixWare.
3310 [Gary Benson <gbenson@redhat.com>]
3312 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3313 messages are stored in a single piece (fixed-length part and
3314 variable-length part combined) and fix various bugs found on the way.
3317 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3318 instead. BIO_gethostbyname() does not know what timeouts are
3319 appropriate, so entries would stay in cache even when they have
3321 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3323 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3324 faced with a pathologically small ClientHello fragment that does
3325 not contain client_version: Instead of aborting with an error,
3326 simply choose the highest available protocol version (i.e.,
3327 TLS 1.0 unless it is disabled). In practice, ClientHello
3328 messages are never sent like this, but this change gives us
3329 strictly correct behaviour at least for TLS.
3332 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3333 never resets s->method to s->ctx->method when called from within
3334 one of the SSL handshake functions.
3335 [Bodo Moeller; problem pointed out by Niko Baric]
3337 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3338 (sent using the client's version number) if client_version is
3339 smaller than the protocol version in use. Also change
3340 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3341 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3342 the client will at least see that alert.
3345 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3349 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3350 client receives HelloRequest while in a handshake.
3351 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3353 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3354 should end in 'break', not 'goto end' which circuments various
3355 cleanups done in state SSL_ST_OK. But session related stuff
3356 must be disabled for SSL_ST_OK in the case that we just sent a
3359 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3360 before just sending a HelloRequest.
3361 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3363 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3364 reveal whether illegal block cipher padding was found or a MAC
3365 verification error occured. (Neither SSLerr() codes nor alerts
3366 are directly visible to potential attackers, but the information
3367 may leak via logfiles.)
3369 Similar changes are not required for the SSL 2.0 implementation
3370 because the number of padding bytes is sent in clear for SSL 2.0,
3371 and the extra bytes are just ignored. However ssl/s2_pkt.c
3372 failed to verify that the purported number of padding bytes is in
3376 *) Add OpenUNIX-8 support including shared libraries
3377 (Boyd Lynn Gerber <gerberb@zenez.com>).
3380 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3381 'wristwatch attack' using huge encoding parameters (cf.
3382 James H. Manger's CRYPTO 2001 paper). Note that the
3383 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3384 encoding parameters and hence was not vulnerable.
3387 *) BN_sqr() bug fix.
3388 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3390 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3391 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3392 followed by modular reduction.
3393 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3395 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3396 equivalent based on BN_pseudo_rand() instead of BN_rand().
3399 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3400 This function was broken, as the check for a new client hello message
3401 to handle SGC did not allow these large messages.
3402 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3405 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3408 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3409 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3412 *) Rework the configuration and shared library support for Tru64 Unix.
3413 The configuration part makes use of modern compiler features and
3414 still retains old compiler behavior for those that run older versions
3415 of the OS. The shared library support part includes a variant that
3416 uses the RPATH feature, and is available through the special
3417 configuration target "alpha-cc-rpath", which will never be selected
3419 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3421 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3422 with the same message size as in ssl3_get_certificate_request().
3423 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3424 messages might inadvertently be reject as too long.
3425 [Petr Lampa <lampa@fee.vutbr.cz>]
3427 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3430 *) Modified SSL library such that the verify_callback that has been set
3431 specificly for an SSL object with SSL_set_verify() is actually being
3432 used. Before the change, a verify_callback set with this function was
3433 ignored and the verify_callback() set in the SSL_CTX at the time of
3434 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3435 to allow the necessary settings.
3438 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3439 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3440 done automatically (in contradiction to the requirements of the C
3441 standard). This made problems when used from OpenSSH.
3444 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3445 dh->length and always used
3447 BN_rand_range(priv_key, dh->p).
3449 BN_rand_range() is not necessary for Diffie-Hellman, and this
3450 specific range makes Diffie-Hellman unnecessarily inefficient if
3451 dh->length (recommended exponent length) is much smaller than the
3452 length of dh->p. We could use BN_rand_range() if the order of
3453 the subgroup was stored in the DH structure, but we only have
3458 BN_rand(priv_key, l, ...)
3460 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3466 RSA_eay_public_encrypt
3467 RSA_eay_private_decrypt
3468 RSA_eay_private_encrypt (signing)
3469 RSA_eay_public_decrypt (signature verification)
3471 (default implementations for RSA_public_encrypt,
3472 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3473 always reject numbers >= n.
3476 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3477 to synchronize access to 'locking_thread'. This is necessary on
3478 systems where access to 'locking_thread' (an 'unsigned long'
3479 variable) is not atomic.
3482 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3483 *before* setting the 'crypto_lock_rand' flag. The previous code had
3484 a race condition if 0 is a valid thread ID.
3485 [Travis Vitek <vitek@roguewave.com>]
3487 *) Add support for shared libraries under Irix.
3488 [Albert Chin-A-Young <china@thewrittenword.com>]
3490 *) Add configuration option to build on Linux on both big-endian and
3492 [Ralf Baechle <ralf@uni-koblenz.de>]
3494 *) Add the possibility to create shared libraries on HP-UX.
3497 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3499 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3500 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3501 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3502 PRNG state recovery was possible based on the output of
3503 one PRNG request appropriately sized to gain knowledge on
3504 'md' followed by enough consecutive 1-byte PRNG requests
3505 to traverse all of 'state'.
3507 1. When updating 'md_local' (the current thread's copy of 'md')
3508 during PRNG output generation, hash all of the previous
3509 'md_local' value, not just the half used for PRNG output.
3511 2. Make the number of bytes from 'state' included into the hash
3512 independent from the number of PRNG bytes requested.
3514 The first measure alone would be sufficient to avoid
3515 Markku-Juhani's attack. (Actually it had never occurred
3516 to me that the half of 'md_local' used for chaining was the
3517 half from which PRNG output bytes were taken -- I had always
3518 assumed that the secret half would be used.) The second
3519 measure makes sure that additional data from 'state' is never
3520 mixed into 'md_local' in small portions; this heuristically
3521 further strengthens the PRNG.
3524 *) Fix crypto/bn/asm/mips3.s.
3527 *) When only the key is given to "enc", the IV is undefined. Print out
3528 an error message in this case.
3531 *) Handle special case when X509_NAME is empty in X509 printing routines.
3534 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3535 positive and less than q.
3538 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3539 used: it isn't thread safe and the add_lock_callback should handle
3541 [Paul Rose <Paul.Rose@bridge.com>]
3543 *) Verify that incoming data obeys the block size in
3544 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3548 [Ulf Möller, Bodo Möller]
3550 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3551 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3552 when fixing the server behaviour for backwards-compatible 'client
3553 hello' messages. (Note that the attack is impractical against
3554 SSL 3.0 and TLS 1.0 anyway because length and version checking
3555 means that the probability of guessing a valid ciphertext is
3556 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3559 Before 0.9.5, the countermeasure (hide the error by generating a
3560 random 'decryption result') did not work properly because
3561 ERR_clear_error() was missing, meaning that SSL_get_error() would
3562 detect the supposedly ignored error.
3564 Both problems are now fixed.
3567 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3568 (previously it was 1024).
3571 *) Fix for compatibility mode trust settings: ignore trust settings
3572 unless some valid trust or reject settings are present.
3575 *) Fix for blowfish EVP: its a variable length cipher.
3578 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3579 parameters in DSA public key structures and return an error in the
3580 DSA routines if parameters are absent.
3583 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3584 in the current directory if neither $RANDFILE nor $HOME was set.
3585 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3586 caused some confusion to Windows users who haven't defined $HOME.
3587 Thus RAND_file_name() is changed again: e_os.h can define a
3588 DEFAULT_HOME, which will be used if $HOME is not set.
3589 For Windows, we use "C:"; on other platforms, we still require
3590 environment variables.
3592 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3593 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3594 having multiple threads call RAND_poll() concurrently.
3597 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3598 combination of a flag and a thread ID variable.
3599 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3600 flag), *other* threads can enter ssleay_add_bytes without obeying
3601 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3602 that they do not hold after the first thread unsets add_do_not_lock).
3605 *) Change bctest again: '-x' expressions are not available in all
3609 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3611 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3612 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3614 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3615 the default extension for executables, if any. Also, make the perl
3616 scripts that use symlink() to test if it really exists and use "cp"
3617 if it doesn't. All this made OpenSSL compilable and installable in
3621 *) Fix for asn1_GetSequence() for indefinite length constructed data.
3622 If SEQUENCE is length is indefinite just set c->slen to the total
3623 amount of data available.
3624 [Steve Henson, reported by shige@FreeBSD.org]
3625 [This change does not apply to 0.9.7.]
3627 *) Change bctest to avoid here-documents inside command substitution
3628 (workaround for FreeBSD /bin/sh bug).
3629 For compatibility with Ultrix, avoid shell functions (introduced
3630 in the bctest version that searches along $PATH).
3633 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
3634 with des_encrypt() defined on some operating systems, like Solaris
3638 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
3639 On the Importance of Eliminating Errors in Cryptographic
3640 Computations, J. Cryptology 14 (2001) 2, 101-119,
3641 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
3644 *) MIPS assembler BIGNUM division bug fix.
3647 *) Disabled incorrect Alpha assembler code.
3650 *) Fix PKCS#7 decode routines so they correctly update the length
3651 after reading an EOC for the EXPLICIT tag.
3653 [This change does not apply to 0.9.7.]
3655 *) Fix bug in PKCS#12 key generation routines. This was triggered
3656 if a 3DES key was generated with a 0 initial byte. Include
3657 PKCS12_BROKEN_KEYGEN compilation option to retain the old
3658 (but broken) behaviour.
3661 *) Enhance bctest to search for a working bc along $PATH and print
3663 [Tim Rice <tim@multitalents.net> via Richard Levitte]
3665 *) Fix memory leaks in err.c: free err_data string if necessary;
3666 don't write to the wrong index in ERR_set_error_data.
3669 *) Implement ssl23_peek (analogous to ssl23_read), which previously
3673 *) Replace rdtsc with _emit statements for VC++ version 5.
3674 [Jeremy Cooper <jeremy@baymoo.org>]
3676 *) Make it possible to reuse SSLv2 sessions.
3679 *) In copy_email() check for >= 0 as a return value for
3680 X509_NAME_get_index_by_NID() since 0 is a valid index.
3681 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
3683 *) Avoid coredump with unsupported or invalid public keys by checking if
3684 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
3685 PKCS7_verify() fails with non detached data.
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