5 Changes between 0.9.7h and 0.9.8 [xx XXX xxxx]
7 *) Add attribute functions to EVP_PKEY structure. Modify
8 PKCS12_create() to recognize a CSP name attribute and
9 use it. Make -CSP option work again in pkcs12 utility.
12 *) Add new functionality to the bn blinding code:
13 - automatic re-creation of the BN_BLINDING parameters after
14 a fixed number of uses (currently 32)
15 - add new function for parameter creation
16 - introduce flags to control the update behaviour of the
17 BN_BLINDING parameters
18 - hide BN_BLINDING structure
19 Add a second BN_BLINDING slot to the RSA structure to improve
20 performance when a single RSA object is shared among several
24 *) Add support for DTLS.
25 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
27 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
28 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
31 *) Remove buggy and incompletet DH cert support from
32 ssl/ssl_rsa.c and ssl/s3_both.c
35 *) Use SHA-1 instead of MD5 as the default digest algorithm for
36 the apps/openssl applications.
39 *) Compile clean with "-Wall -Wmissing-prototypes
40 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
41 DEBUG_SAFESTACK must also be set.
44 *) Change ./Configure so that certain algorithms can be disabled by default.
45 The new counterpiece to "no-xxx" is "enable-xxx".
47 The patented RC5 and MDC2 algorithms will now be disabled unless
48 "enable-rc5" and "enable-mdc2", respectively, are specified.
50 (IDEA remains enabled despite being patented. This is because IDEA
51 is frequently required for interoperability, and there is no license
52 fee for non-commercial use. As before, "no-idea" can be used to
53 avoid this algorithm.)
57 *) Add processing of proxy certificates (see RFC 3820). This work was
58 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
59 EGEE (Enabling Grids for E-science in Europe).
62 *) RC4 performance overhaul on modern architectures/implementations, such
63 as Intel P4, IA-64 and AMD64.
66 *) New utility extract-section.pl. This can be used specify an alternative
67 section number in a pod file instead of having to treat each file as
68 a separate case in Makefile. This can be done by adding two lines to the
71 =for comment openssl_section:XXX
73 The blank line is mandatory.
77 *) New arguments -certform, -keyform and -pass for s_client and s_server
78 to allow alternative format key and certificate files and passphrase
82 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
83 update associated structures and add various utility functions.
85 Add new policy related verify parameters, include policy checking in
86 standard verify code. Enhance 'smime' application with extra parameters
87 to support policy checking and print out.
90 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
91 Nehemiah processors. These extensions support AES encryption in hardware
92 as well as RNG (though RNG support is currently disabled).
93 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
95 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
98 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
99 [Andy Polyakov and a number of other people]
101 *) Improved PowerPC platform support. Most notably BIGNUM assembler
102 implementation contributed by IBM.
103 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
105 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
106 exponent rather than 'unsigned long'. There is a corresponding change to
107 the new 'rsa_keygen' element of the RSA_METHOD structure.
108 [Jelte Jansen, Geoff Thorpe]
110 *) Functionality for creating the initial serial number file is now
111 moved from CA.pl to the 'ca' utility with a new option -create_serial.
113 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
114 number file to 1, which is bound to cause problems. To avoid
115 the problems while respecting compatibility between different 0.9.7
116 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
117 CA.pl for serial number initialization. With the new release 0.9.8,
118 we can fix the problem directly in the 'ca' utility.)
121 *) Reduced header interdepencies by declaring more opaque objects in
122 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
123 give fewer recursive includes, which could break lazy source code - so
124 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
125 developers should define this symbol when building and using openssl to
126 ensure they track the recommended behaviour, interfaces, [etc], but
127 backwards-compatible behaviour prevails when this isn't defined.
130 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
133 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
134 This will generate a random key of the appropriate length based on the
135 cipher context. The EVP_CIPHER can provide its own random key generation
136 routine to support keys of a specific form. This is used in the des and
137 3des routines to generate a key of the correct parity. Update S/MIME
138 code to use new functions and hence generate correct parity DES keys.
139 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
140 valid (weak or incorrect parity).
143 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
144 as looking them up. This is useful when the verified structure may contain
145 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
146 present unless the new PKCS7_NO_CRL flag is asserted.
149 *) Extend ASN1 oid configuration module. It now additionally accepts the
152 shortName = some long name, 1.2.3.4
155 *) Reimplemented the BN_CTX implementation. There is now no more static
156 limitation on the number of variables it can handle nor the depth of the
157 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
158 information can now expand as required, and rather than having a single
159 static array of bignums, BN_CTX now uses a linked-list of such arrays
160 allowing it to expand on demand whilst maintaining the usefulness of
164 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
165 to allow all RSA operations to function using a single BN_CTX.
168 *) Preliminary support for certificate policy evaluation and checking. This
169 is initially intended to pass the tests outlined in "Conformance Testing
170 of Relying Party Client Certificate Path Processing Logic" v1.07.
173 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
174 remained unused and not that useful. A variety of other little bignum
175 tweaks and fixes have also been made continuing on from the audit (see
179 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
180 associated ASN1, EVP and SSL functions and old ASN1 macros.
183 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
184 and this should never fail. So the return value from the use of
185 BN_set_word() (which can fail due to needless expansion) is now deprecated;
186 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
189 *) BN_CTX_get() should return zero-valued bignums, providing the same
190 initialised value as BN_new().
191 [Geoff Thorpe, suggested by Ulf Möller]
193 *) Support for inhibitAnyPolicy certificate extension.
196 *) An audit of the BIGNUM code is underway, for which debugging code is
197 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
198 is considered valid when processing BIGNUMs, and causes execution to
199 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
200 further steps are taken to deliberately pollute unused data in BIGNUM
201 structures to try and expose faulty code further on. For now, openssl will
202 (in its default mode of operation) continue to tolerate the inconsistent
203 forms that it has tolerated in the past, but authors and packagers should
204 consider trying openssl and their own applications when compiled with
205 these debugging symbols defined. It will help highlight potential bugs in
206 their own code, and will improve the test coverage for OpenSSL itself. At
207 some point, these tighter rules will become openssl's default to improve
208 maintainability, though the assert()s and other overheads will remain only
209 in debugging configurations. See bn.h for more details.
210 [Geoff Thorpe, Nils Larsch, Ulf Möller]
212 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
213 that can only be obtained through BN_CTX_new() (which implicitly
214 initialises it). The presence of this function only made it possible
215 to overwrite an existing structure (and cause memory leaks).
218 *) Because of the callback-based approach for implementing LHASH as a
219 template type, lh_insert() adds opaque objects to hash-tables and
220 lh_doall() or lh_doall_arg() are typically used with a destructor callback
221 to clean up those corresponding objects before destroying the hash table
222 (and losing the object pointers). So some over-zealous constifications in
223 LHASH have been relaxed so that lh_insert() does not take (nor store) the
224 objects as "const" and the lh_doall[_arg] callback wrappers are not
225 prototyped to have "const" restrictions on the object pointers they are
226 given (and so aren't required to cast them away any more).
229 *) The tmdiff.h API was so ugly and minimal that our own timing utility
230 (speed) prefers to use its own implementation. The two implementations
231 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
232 its object type properly exposed (MS_TM) instead of casting to/from "char
233 *". This may still change yet if someone realises MS_TM and "ms_time_***"
234 aren't necessarily the greatest nomenclatures - but this is what was used
235 internally to the implementation so I've used that for now.
238 *) Ensure that deprecated functions do not get compiled when
239 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
240 the self-tests were still using deprecated key-generation functions so
241 these have been updated also.
244 *) Reorganise PKCS#7 code to separate the digest location functionality
245 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
246 New function PKCS7_set_digest() to set the digest type for PKCS#7
247 digestedData type. Add additional code to correctly generate the
248 digestedData type and add support for this type in PKCS7 initialization
252 *) New function PKCS7_set0_type_other() this initializes a PKCS7
253 structure of type "other".
256 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
257 sure the loop does correctly stop and breaking ("division by zero")
258 modulus operations are not performed. The (pre-generated) prime
259 table crypto/bn/bn_prime.h was already correct, but it could not be
260 re-generated on some platforms because of the "division by zero"
261 situation in the script.
262 [Ralf S. Engelschall]
264 *) Update support for ECC-based TLS ciphersuites according to
265 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
266 SHA-1 now is only used for "small" curves (where the
267 representation of a field element takes up to 24 bytes); for
268 larger curves, the field element resulting from ECDH is directly
269 used as premaster secret.
270 [Douglas Stebila (Sun Microsystems Laboratories)]
272 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
273 curve secp160r1 to the tests.
274 [Douglas Stebila (Sun Microsystems Laboratories)]
276 *) Add the possibility to load symbols globally with DSO.
277 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
279 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
280 control of the error stack.
283 *) Add support for STORE in ENGINE.
286 *) Add the STORE type. The intention is to provide a common interface
287 to certificate and key stores, be they simple file-based stores, or
288 HSM-type store, or LDAP stores, or...
289 NOTE: The code is currently UNTESTED and isn't really used anywhere.
292 *) Add a generic structure called OPENSSL_ITEM. This can be used to
293 pass a list of arguments to any function as well as provide a way
294 for a function to pass data back to the caller.
297 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
298 works like BUF_strdup() but can be used to duplicate a portion of
299 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
303 *) Add the function sk_find_ex() which works like sk_find(), but will
304 return an index to an element even if an exact match couldn't be
305 found. The index is guaranteed to point at the element where the
306 searched-for key would be inserted to preserve sorting order.
309 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
310 takes an extra flags argument for optional functionality. Currently,
311 the following flags are defined:
313 OBJ_BSEARCH_VALUE_ON_NOMATCH
314 This one gets OBJ_bsearch_ex() to return a pointer to the first
315 element where the comparing function returns a negative or zero
318 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
319 This one gets OBJ_bsearch_ex() to return a pointer to the first
320 element where the comparing function returns zero. This is useful
321 if there are more than one element where the comparing function
325 *) Make it possible to create self-signed certificates with 'openssl ca'
326 in such a way that the self-signed certificate becomes part of the
327 CA database and uses the same mechanisms for serial number generation
328 as all other certificate signing. The new flag '-selfsign' enables
329 this functionality. Adapt CA.sh and CA.pl.in.
332 *) Add functionality to check the public key of a certificate request
333 against a given private. This is useful to check that a certificate
334 request can be signed by that key (self-signing).
337 *) Make it possible to have multiple active certificates with the same
338 subject in the CA index file. This is done only if the keyword
339 'unique_subject' is set to 'no' in the main CA section (default
340 if 'CA_default') of the configuration file. The value is saved
341 with the database itself in a separate index attribute file,
342 named like the index file with '.attr' appended to the name.
345 *) Generate muti valued AVAs using '+' notation in config files for
349 *) Support for nameConstraints certificate extension.
352 *) Support for policyConstraints certificate extension.
355 *) Support for policyMappings certificate extension.
358 *) Make sure the default DSA_METHOD implementation only uses its
359 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
360 and change its own handlers to be NULL so as to remove unnecessary
361 indirection. This lets alternative implementations fallback to the
362 default implementation more easily.
365 *) Support for directoryName in GeneralName related extensions
369 *) Make it possible to link applications using Makefile.shared.
370 Make that possible even when linking against static libraries!
373 *) Support for single pass processing for S/MIME signing. This now
374 means that S/MIME signing can be done from a pipe, in addition
375 cleartext signing (multipart/signed type) is effectively streaming
376 and the signed data does not need to be all held in memory.
378 This is done with a new flag PKCS7_STREAM. When this flag is set
379 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
380 is done after the data is output (and digests calculated) in
384 *) Add full support for -rpath/-R, both in shared libraries and
385 applications, at least on the platforms where it's known how
389 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
390 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
391 will now compute a table of multiples of the generator that
392 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
393 faster (notably in the case of a single point multiplication,
395 [Nils Larsch, Bodo Moeller]
397 *) IPv6 support for certificate extensions. The various extensions
398 which use the IP:a.b.c.d can now take IPv6 addresses using the
399 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
403 *) Added an ENGINE that implements RSA by performing private key
404 exponentiations with the GMP library. The conversions to and from
405 GMP's mpz_t format aren't optimised nor are any montgomery forms
406 cached, and on x86 it appears OpenSSL's own performance has caught up.
407 However there are likely to be other architectures where GMP could
408 provide a boost. This ENGINE is not built in by default, but it can be
409 specified at Configure time and should be accompanied by the necessary
410 linker additions, eg;
411 ./config -DOPENSSL_USE_GMP -lgmp
414 *) "openssl engine" will not display ENGINE/DSO load failure errors when
415 testing availability of engines with "-t" - the old behaviour is
416 produced by increasing the feature's verbosity with "-tt".
419 *) ECDSA routines: under certain error conditions uninitialized BN objects
420 could be freed. Solution: make sure initialization is performed early
421 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
425 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
426 and DH_METHOD (eg. by ENGINE implementations) to override the normal
427 software implementations. For DSA and DH, parameter generation can
428 also be overriden by providing the appropriate method callbacks.
431 *) Change the "progress" mechanism used in key-generation and
432 primality testing to functions that take a new BN_GENCB pointer in
433 place of callback/argument pairs. The new API functions have "_ex"
434 postfixes and the older functions are reimplemented as wrappers for
435 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
436 declarations of the old functions to help (graceful) attempts to
437 migrate to the new functions. Also, the new key-generation API
438 functions operate on a caller-supplied key-structure and return
439 success/failure rather than returning a key or NULL - this is to
440 help make "keygen" another member function of RSA_METHOD etc.
442 Example for using the new callback interface:
444 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
448 BN_GENCB_set(&my_cb, my_callback, my_arg);
450 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
451 /* For the meaning of a, b in calls to my_callback(), see the
452 * documentation of the function that calls the callback.
453 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
454 * my_callback should return 1 if it wants BN_is_prime_ex()
455 * to continue, or 0 to stop.
460 *) Change the ZLIB compression method to be stateful, and make it
461 available to TLS with the number defined in
462 draft-ietf-tls-compression-04.txt.
465 *) Add the ASN.1 structures and functions for CertificatePair, which
466 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
468 CertificatePair ::= SEQUENCE {
469 forward [0] Certificate OPTIONAL,
470 reverse [1] Certificate OPTIONAL,
471 -- at least one of the pair shall be present -- }
473 Also implement the PEM functions to read and write certificate
474 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
476 This needed to be defined, mostly for the sake of the LDAP
477 attribute crossCertificatePair, but may prove useful elsewhere as
481 *) Make it possible to inhibit symlinking of shared libraries in
482 Makefile.shared, for Cygwin's sake.
485 *) Extend the BIGNUM API by creating a function
486 void BN_set_negative(BIGNUM *a, int neg);
487 and a macro that behave like
488 int BN_is_negative(const BIGNUM *a);
490 to avoid the need to access 'a->neg' directly in applications.
493 *) Implement fast modular reduction for pseudo-Mersenne primes
494 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
495 EC_GROUP_new_curve_GFp() will now automatically use this
497 [Nils Larsch <nla@trustcenter.de>]
499 *) Add new lock type (CRYPTO_LOCK_BN).
502 *) Change the ENGINE framework to automatically load engines
503 dynamically from specific directories unless they could be
504 found to already be built in or loaded. Move all the
505 current engines except for the cryptodev one to a new
507 The engines in engines/ are built as shared libraries if
508 the "shared" options was given to ./Configure or ./config.
509 Otherwise, they are inserted in libcrypto.a.
510 /usr/local/ssl/engines is the default directory for dynamic
511 engines, but that can be overriden at configure time through
512 the usual use of --prefix and/or --openssldir, and at run
513 time with the environment variable OPENSSL_ENGINES.
514 [Geoff Thorpe and Richard Levitte]
516 *) Add Makefile.shared, a helper makefile to build shared
517 libraries. Addapt Makefile.org.
520 *) Add version info to Win32 DLLs.
521 [Peter 'Luna' Runestig" <peter@runestig.com>]
523 *) Add new 'medium level' PKCS#12 API. Certificates and keys
524 can be added using this API to created arbitrary PKCS#12
525 files while avoiding the low level API.
527 New options to PKCS12_create(), key or cert can be NULL and
528 will then be omitted from the output file. The encryption
529 algorithm NIDs can be set to -1 for no encryption, the mac
530 iteration count can be set to 0 to omit the mac.
532 Enhance pkcs12 utility by making the -nokeys and -nocerts
533 options work when creating a PKCS#12 file. New option -nomac
534 to omit the mac, NONE can be set for an encryption algorithm.
535 New code is modified to use the enhanced PKCS12_create()
536 instead of the low level API.
539 *) Extend ASN1 encoder to support indefinite length constructed
540 encoding. This can output sequences tags and octet strings in
541 this form. Modify pk7_asn1.c to support indefinite length
542 encoding. This is experimental and needs additional code to
543 be useful, such as an ASN1 bio and some enhanced streaming
546 Extend template encode functionality so that tagging is passed
547 down to the template encoder.
550 *) Let 'openssl req' fail if an argument to '-newkey' is not
551 recognized instead of using RSA as a default.
554 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
555 As these are not official, they are not included in "ALL";
556 the "ECCdraft" ciphersuite group alias can be used to select them.
557 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
559 *) Add ECDH engine support.
560 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
562 *) Add ECDH in new directory crypto/ecdh/.
563 [Douglas Stebila (Sun Microsystems Laboratories)]
565 *) Let BN_rand_range() abort with an error after 100 iterations
566 without success (which indicates a broken PRNG).
569 *) Change BN_mod_sqrt() so that it verifies that the input value
570 is really the square of the return value. (Previously,
571 BN_mod_sqrt would show GIGO behaviour.)
574 *) Add named elliptic curves over binary fields from X9.62, SECG,
575 and WAP/WTLS; add OIDs that were still missing.
577 [Sheueling Chang Shantz and Douglas Stebila
578 (Sun Microsystems Laboratories)]
580 *) Extend the EC library for elliptic curves over binary fields
581 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
584 EC_GF2m_simple_method
588 EC_GROUP_new_curve_GF2m
589 EC_GROUP_set_curve_GF2m
590 EC_GROUP_get_curve_GF2m
591 EC_POINT_set_affine_coordinates_GF2m
592 EC_POINT_get_affine_coordinates_GF2m
593 EC_POINT_set_compressed_coordinates_GF2m
595 Point compression for binary fields is disabled by default for
596 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
599 As binary polynomials are represented as BIGNUMs, various members
600 of the EC_GROUP and EC_POINT data structures can be shared
601 between the implementations for prime fields and binary fields;
602 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
603 are essentially identical to their ..._GFp counterparts.
604 (For simplicity, the '..._GFp' prefix has been dropped from
605 various internal method names.)
607 An internal 'field_div' method (similar to 'field_mul' and
608 'field_sqr') has been added; this is used only for binary fields.
610 [Sheueling Chang Shantz and Douglas Stebila
611 (Sun Microsystems Laboratories)]
613 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
614 through methods ('mul', 'precompute_mult').
616 The generic implementations (now internally called 'ec_wNAF_mul'
617 and 'ec_wNAF_precomputed_mult') remain the default if these
618 methods are undefined.
620 [Sheueling Chang Shantz and Douglas Stebila
621 (Sun Microsystems Laboratories)]
623 *) New function EC_GROUP_get_degree, which is defined through
624 EC_METHOD. For curves over prime fields, this returns the bit
625 length of the modulus.
627 [Sheueling Chang Shantz and Douglas Stebila
628 (Sun Microsystems Laboratories)]
630 *) New functions EC_GROUP_dup, EC_POINT_dup.
631 (These simply call ..._new and ..._copy).
633 [Sheueling Chang Shantz and Douglas Stebila
634 (Sun Microsystems Laboratories)]
636 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
637 Polynomials are represented as BIGNUMs (where the sign bit is not
638 used) in the following functions [macros]:
641 BN_GF2m_sub [= BN_GF2m_add]
642 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
643 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
644 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
646 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
647 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
648 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
649 BN_GF2m_cmp [= BN_ucmp]
651 (Note that only the 'mod' functions are actually for fields GF(2^m).
652 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
654 For some functions, an the irreducible polynomial defining a
655 field can be given as an 'unsigned int[]' with strictly
656 decreasing elements giving the indices of those bits that are set;
657 i.e., p[] represents the polynomial
658 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
660 p[0] > p[1] > ... > p[k] = 0.
661 This applies to the following functions:
666 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
667 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
670 BN_GF2m_mod_solve_quad_arr
674 Conversion can be performed by the following functions:
679 bntest.c has additional tests for binary polynomial arithmetic.
681 Two implementations for BN_GF2m_mod_div() are available.
682 The default algorithm simply uses BN_GF2m_mod_inv() and
683 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
684 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
685 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
687 [Sheueling Chang Shantz and Douglas Stebila
688 (Sun Microsystems Laboratories)]
690 *) Add new error code 'ERR_R_DISABLED' that can be used when some
691 functionality is disabled at compile-time.
692 [Douglas Stebila <douglas.stebila@sun.com>]
694 *) Change default behaviour of 'openssl asn1parse' so that more
695 information is visible when viewing, e.g., a certificate:
697 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
698 mode the content of non-printable OCTET STRINGs is output in a
699 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
700 avoid the appearance of a printable string.
701 [Nils Larsch <nla@trustcenter.de>]
703 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
705 EC_GROUP_set_asn1_flag()
706 EC_GROUP_get_asn1_flag()
707 EC_GROUP_set_point_conversion_form()
708 EC_GROUP_get_point_conversion_form()
709 These control ASN1 encoding details:
710 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
711 has been set to OPENSSL_EC_NAMED_CURVE.
712 - Points are encoded in uncompressed form by default; options for
713 asn1_for are as for point2oct, namely
714 POINT_CONVERSION_COMPRESSED
715 POINT_CONVERSION_UNCOMPRESSED
716 POINT_CONVERSION_HYBRID
718 Also add 'seed' and 'seed_len' members to EC_GROUP with access
722 EC_GROUP_get_seed_len()
723 This is used only for ASN1 purposes (so far).
724 [Nils Larsch <nla@trustcenter.de>]
726 *) Add 'field_type' member to EC_METHOD, which holds the NID
727 of the appropriate field type OID. The new function
728 EC_METHOD_get_field_type() returns this value.
729 [Nils Larsch <nla@trustcenter.de>]
736 providing useful interfaces to EC_POINT_point2oct() and
737 EC_POINT_oct2point().
738 [Nils Larsch <nla@trustcenter.de>]
740 *) Change internals of the EC library so that the functions
741 EC_GROUP_set_generator()
742 EC_GROUP_get_generator()
744 EC_GROUP_get_cofactor()
745 are implemented directly in crypto/ec/ec_lib.c and not dispatched
746 to methods, which would lead to unnecessary code duplication when
747 adding different types of curves.
748 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
750 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
751 arithmetic, and such that modified wNAFs are generated
752 (which avoid length expansion in many cases).
755 *) Add a function EC_GROUP_check_discriminant() (defined via
756 EC_METHOD) that verifies that the curve discriminant is non-zero.
758 Add a function EC_GROUP_check() that makes some sanity tests
759 on a EC_GROUP, its generator and order. This includes
760 EC_GROUP_check_discriminant().
761 [Nils Larsch <nla@trustcenter.de>]
763 *) Add ECDSA in new directory crypto/ecdsa/.
765 Add applications 'openssl ecparam' and 'openssl ecdsa'
766 (these are based on 'openssl dsaparam' and 'openssl dsa').
768 ECDSA support is also included in various other files across the
769 library. Most notably,
770 - 'openssl req' now has a '-newkey ecdsa:file' option;
771 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
772 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
773 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
774 them suitable for ECDSA where domain parameters must be
775 extracted before the specific public key;
776 - ECDSA engine support has been added.
777 [Nils Larsch <nla@trustcenter.de>]
779 *) Include some named elliptic curves, and add OIDs from X9.62,
780 SECG, and WAP/WTLS. Each curve can be obtained from the new
782 EC_GROUP_new_by_curve_name(),
783 and the list of available named curves can be obtained with
784 EC_get_builtin_curves().
785 Also add a 'curve_name' member to EC_GROUP objects, which can be
787 EC_GROUP_set_curve_name()
788 EC_GROUP_get_curve_name()
789 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
791 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
792 was actually never needed) and in BN_mul(). The removal in BN_mul()
793 required a small change in bn_mul_part_recursive() and the addition
794 of the functions bn_cmp_part_words(), bn_sub_part_words() and
795 bn_add_part_words(), which do the same thing as bn_cmp_words(),
796 bn_sub_words() and bn_add_words() except they take arrays with
800 Changes between 0.9.7g and 0.9.7h [XX xxx XXXX]
802 *) Make a new fixed-window mod_exp implementation the default for
803 RSA, DSA, and DH private-key operations so that the sequence of
804 squares and multiplies and the memory access pattern are
805 independent of the particular secret key. This will mitigate
806 cache-timing and potential related attacks.
808 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
809 and this is automatically used by BN_mod_exp_mont() if the new flag
810 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
811 will use this BN flag for private exponents unless the flag
812 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
813 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
815 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
817 *) Change the client implementation for SSLv23_method() and
818 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
819 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
820 (Previously, the SSL 2.0 backwards compatible Client Hello
821 message format would be used even with SSL_OP_NO_SSLv2.)
824 *) Add support for smime-type MIME parameter in S/MIME messages which some
828 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
829 a threadsafe manner. Modify rsa code to use new function and add calls
830 to dsa and dh code (which had race conditions before).
833 *) Include the fixed error library code in the C error file definitions
834 instead of fixing them up at runtime. This keeps the error code
838 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
840 *) Fixes for newer kerberos headers. NB: the casts are needed because
841 the 'length' field is signed on one version and unsigned on another
842 with no (?) obvious way to tell the difference, without these VC++
843 complains. Also the "definition" of FAR (blank) is no longer included
844 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
845 some needed definitions.
848 *) Undo Cygwin change.
851 *) Added support for proxy certificates according to RFC 3820.
852 Because they may be a security thread to unaware applications,
853 they must be explicitely allowed in run-time. See
854 docs/HOWTO/proxy_certificates.txt for further information.
857 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
859 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
860 server and client random values. Previously
861 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
862 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
864 This change has negligible security impact because:
866 1. Server and client random values still have 24 bytes of pseudo random
869 2. Server and client random values are sent in the clear in the initial
872 3. The master secret is derived using the premaster secret (48 bytes in
873 size for static RSA ciphersuites) as well as client server and random
876 The OpenSSL team would like to thank the UK NISCC for bringing this issue
879 [Stephen Henson, reported by UK NISCC]
881 *) Use Windows randomness collection on Cygwin.
884 *) Fix hang in EGD/PRNGD query when communication socket is closed
885 prematurely by EGD/PRNGD.
886 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
888 *) Prompt for pass phrases when appropriate for PKCS12 input format.
891 *) Back-port of selected performance improvements from development
892 branch, as well as improved support for PowerPC platforms.
895 *) Add lots of checks for memory allocation failure, error codes to indicate
896 failure and freeing up memory if a failure occurs.
897 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
899 *) Add new -passin argument to dgst.
902 *) Perform some character comparisons of different types in X509_NAME_cmp:
903 this is needed for some certificates that reencode DNs into UTF8Strings
904 (in violation of RFC3280) and can't or wont issue name rollover
908 *) Make an explicit check during certificate validation to see that
909 the CA setting in each certificate on the chain is correct. As a
910 side effect always do the following basic checks on extensions,
911 not just when there's an associated purpose to the check:
913 - if there is an unhandled critical extension (unless the user
914 has chosen to ignore this fault)
915 - if the path length has been exceeded (if one is set at all)
916 - that certain extensions fit the associated purpose (if one has
920 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
922 *) Avoid a race condition when CRLs are checked in a multi threaded
923 environment. This would happen due to the reordering of the revoked
924 entries during signature checking and serial number lookup. Now the
925 encoding is cached and the serial number sort performed under a lock.
926 Add new STACK function sk_is_sorted().
929 *) Add Delta CRL to the extension code.
932 *) Various fixes to s3_pkt.c so alerts are sent properly.
933 [David Holmes <d.holmes@f5.com>]
935 *) Reduce the chances of duplicate issuer name and serial numbers (in
936 violation of RFC3280) using the OpenSSL certificate creation utilities.
937 This is done by creating a random 64 bit value for the initial serial
938 number when a serial number file is created or when a self signed
939 certificate is created using 'openssl req -x509'. The initial serial
940 number file is created using 'openssl x509 -next_serial' in CA.pl
941 rather than being initialized to 1.
944 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
946 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
947 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
948 [Joe Orton, Steve Henson]
950 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
952 [Joe Orton, Steve Henson]
954 *) Make it possible to have multiple active certificates with the same
955 subject in the CA index file. This is done only if the keyword
956 'unique_subject' is set to 'no' in the main CA section (default
957 if 'CA_default') of the configuration file. The value is saved
958 with the database itself in a separate index attribute file,
959 named like the index file with '.attr' appended to the name.
962 *) X509 verify fixes. Disable broken certificate workarounds when
963 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
964 keyUsage extension present. Don't accept CRLs with unhandled critical
965 extensions: since verify currently doesn't process CRL extensions this
966 rejects a CRL with *any* critical extensions. Add new verify error codes
970 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
971 A clarification of RFC2560 will require the use of OCTET STRINGs and
972 some implementations cannot handle the current raw format. Since OpenSSL
973 copies and compares OCSP nonces as opaque blobs without any attempt at
974 parsing them this should not create any compatibility issues.
977 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
978 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
979 this HMAC (and other) operations are several times slower than OpenSSL
983 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
984 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
986 *) Use the correct content when signing type "other".
989 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
991 *) Fix various bugs revealed by running the NISCC test suite:
993 Stop out of bounds reads in the ASN1 code when presented with
994 invalid tags (CAN-2003-0543 and CAN-2003-0544).
996 Free up ASN1_TYPE correctly if ANY type is invalid (CAN-2003-0545).
998 If verify callback ignores invalid public key errors don't try to check
999 certificate signature with the NULL public key.
1003 *) New -ignore_err option in ocsp application to stop the server
1004 exiting on the first error in a request.
1007 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1008 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1012 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1013 extra data after the compression methods not only for TLS 1.0
1014 but also for SSL 3.0 (as required by the specification).
1015 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1017 *) Change X509_certificate_type() to mark the key as exported/exportable
1018 when it's 512 *bits* long, not 512 bytes.
1021 *) Change AES_cbc_encrypt() so it outputs exact multiple of
1022 blocks during encryption.
1025 *) Various fixes to base64 BIO and non blocking I/O. On write
1026 flushes were not handled properly if the BIO retried. On read
1027 data was not being buffered properly and had various logic bugs.
1028 This also affects blocking I/O when the data being decoded is a
1032 *) Various S/MIME bugfixes and compatibility changes:
1033 output correct application/pkcs7 MIME type if
1034 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
1035 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
1036 of files as .eml work). Correctly handle very long lines in MIME
1040 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
1042 *) Countermeasure against the Klima-Pokorny-Rosa extension of
1043 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
1044 a protocol version number mismatch like a decryption error
1045 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
1048 *) Turn on RSA blinding by default in the default implementation
1049 to avoid a timing attack. Applications that don't want it can call
1050 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
1051 They would be ill-advised to do so in most cases.
1052 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
1054 *) Change RSA blinding code so that it works when the PRNG is not
1055 seeded (in this case, the secret RSA exponent is abused as
1056 an unpredictable seed -- if it is not unpredictable, there
1057 is no point in blinding anyway). Make RSA blinding thread-safe
1058 by remembering the creator's thread ID in rsa->blinding and
1059 having all other threads use local one-time blinding factors
1060 (this requires more computation than sharing rsa->blinding, but
1061 avoids excessive locking; and if an RSA object is not shared
1062 between threads, blinding will still be very fast).
1065 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
1066 ENGINE as defaults for all supported algorithms irrespective of
1067 the 'flags' parameter. 'flags' is now honoured, so applications
1068 should make sure they are passing it correctly.
1071 *) Target "mingw" now allows native Windows code to be generated in
1072 the Cygwin environment as well as with the MinGW compiler.
1075 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
1077 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
1078 via timing by performing a MAC computation even if incorrrect
1079 block cipher padding has been found. This is a countermeasure
1080 against active attacks where the attacker has to distinguish
1081 between bad padding and a MAC verification error. (CAN-2003-0078)
1083 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
1084 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
1085 Martin Vuagnoux (EPFL, Ilion)]
1087 *) Make the no-err option work as intended. The intention with no-err
1088 is not to have the whole error stack handling routines removed from
1089 libcrypto, it's only intended to remove all the function name and
1090 reason texts, thereby removing some of the footprint that may not
1091 be interesting if those errors aren't displayed anyway.
1093 NOTE: it's still possible for any application or module to have it's
1094 own set of error texts inserted. The routines are there, just not
1095 used by default when no-err is given.
1098 *) Add support for FreeBSD on IA64.
1099 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
1101 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
1102 Kerberos function mit_des_cbc_cksum(). Before this change,
1103 the value returned by DES_cbc_cksum() was like the one from
1104 mit_des_cbc_cksum(), except the bytes were swapped.
1105 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
1107 *) Allow an application to disable the automatic SSL chain building.
1108 Before this a rather primitive chain build was always performed in
1109 ssl3_output_cert_chain(): an application had no way to send the
1110 correct chain if the automatic operation produced an incorrect result.
1112 Now the chain builder is disabled if either:
1114 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
1116 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
1118 The reasoning behind this is that an application would not want the
1119 auto chain building to take place if extra chain certificates are
1120 present and it might also want a means of sending no additional
1121 certificates (for example the chain has two certificates and the
1125 *) Add the possibility to build without the ENGINE framework.
1126 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1128 *) Under Win32 gmtime() can return NULL: check return value in
1129 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
1132 *) DSA routines: under certain error conditions uninitialized BN objects
1133 could be freed. Solution: make sure initialization is performed early
1134 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
1135 Nils Larsch <nla@trustcenter.de> via PR#459)
1138 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
1139 checked on reconnect on the client side, therefore session resumption
1140 could still fail with a "ssl session id is different" error. This
1141 behaviour is masked when SSL_OP_ALL is used due to
1142 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
1143 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1144 followup to PR #377.
1147 *) IA-32 assembler support enhancements: unified ELF targets, support
1148 for SCO/Caldera platforms, fix for Cygwin shared build.
1151 *) Add support for FreeBSD on sparc64. As a consequence, support for
1152 FreeBSD on non-x86 processors is separate from x86 processors on
1153 the config script, much like the NetBSD support.
1154 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
1156 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
1158 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
1161 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
1162 code (06) was taken as the first octet of the session ID and the last
1163 octet was ignored consequently. As a result SSLv2 client side session
1164 caching could not have worked due to the session ID mismatch between
1166 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
1170 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
1171 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
1175 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
1176 seems that in spite of existing for more than a year, many application
1177 author have done nothing to provide the necessary callbacks, which
1178 means that this particular engine will not work properly anywhere.
1179 This is a very unfortunate situation which forces us, in the name
1180 of usability, to give the hw_ncipher.c a static lock, which is part
1182 NOTE: This is for the 0.9.7 series ONLY. This hack will never
1183 appear in 0.9.8 or later. We EXPECT application authors to have
1184 dealt properly with this when 0.9.8 is released (unless we actually
1185 make such changes in the libcrypto locking code that changes will
1186 have to be made anyway).
1189 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
1190 octets have been read, EOF or an error occurs. Without this change
1191 some truncated ASN1 structures will not produce an error.
1194 *) Disable Heimdal support, since it hasn't been fully implemented.
1195 Still give the possibility to force the use of Heimdal, but with
1196 warnings and a request that patches get sent to openssl-dev.
1199 *) Add the VC-CE target, introduce the WINCE sysname, and add
1200 INSTALL.WCE and appropriate conditionals to make it build.
1201 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
1203 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
1204 cygssl-x.y.z.dll, where x, y and z are the major, minor and
1205 edit numbers of the version.
1206 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
1208 *) Introduce safe string copy and catenation functions
1209 (BUF_strlcpy() and BUF_strlcat()).
1210 [Ben Laurie (CHATS) and Richard Levitte]
1212 *) Avoid using fixed-size buffers for one-line DNs.
1213 [Ben Laurie (CHATS)]
1215 *) Add BUF_MEM_grow_clean() to avoid information leakage when
1216 resizing buffers containing secrets, and use where appropriate.
1217 [Ben Laurie (CHATS)]
1219 *) Avoid using fixed size buffers for configuration file location.
1220 [Ben Laurie (CHATS)]
1222 *) Avoid filename truncation for various CA files.
1223 [Ben Laurie (CHATS)]
1225 *) Use sizeof in preference to magic numbers.
1226 [Ben Laurie (CHATS)]
1228 *) Avoid filename truncation in cert requests.
1229 [Ben Laurie (CHATS)]
1231 *) Add assertions to check for (supposedly impossible) buffer
1233 [Ben Laurie (CHATS)]
1235 *) Don't cache truncated DNS entries in the local cache (this could
1236 potentially lead to a spoofing attack).
1237 [Ben Laurie (CHATS)]
1239 *) Fix various buffers to be large enough for hex/decimal
1240 representations in a platform independent manner.
1241 [Ben Laurie (CHATS)]
1243 *) Add CRYPTO_realloc_clean() to avoid information leakage when
1244 resizing buffers containing secrets, and use where appropriate.
1245 [Ben Laurie (CHATS)]
1247 *) Add BIO_indent() to avoid much slightly worrying code to do
1249 [Ben Laurie (CHATS)]
1251 *) Convert sprintf()/BIO_puts() to BIO_printf().
1252 [Ben Laurie (CHATS)]
1254 *) buffer_gets() could terminate with the buffer only half
1256 [Ben Laurie (CHATS)]
1258 *) Add assertions to prevent user-supplied crypto functions from
1259 overflowing internal buffers by having large block sizes, etc.
1260 [Ben Laurie (CHATS)]
1262 *) New OPENSSL_assert() macro (similar to assert(), but enabled
1264 [Ben Laurie (CHATS)]
1266 *) Eliminate unused copy of key in RC4.
1267 [Ben Laurie (CHATS)]
1269 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
1270 [Ben Laurie (CHATS)]
1272 *) Fix off-by-one error in EGD path.
1273 [Ben Laurie (CHATS)]
1275 *) If RANDFILE path is too long, ignore instead of truncating.
1276 [Ben Laurie (CHATS)]
1278 *) Eliminate unused and incorrectly sized X.509 structure
1280 [Ben Laurie (CHATS)]
1282 *) Eliminate unused and dangerous function knumber().
1283 [Ben Laurie (CHATS)]
1285 *) Eliminate unused and dangerous structure, KSSL_ERR.
1286 [Ben Laurie (CHATS)]
1288 *) Protect against overlong session ID context length in an encoded
1289 session object. Since these are local, this does not appear to be
1291 [Ben Laurie (CHATS)]
1293 *) Change from security patch (see 0.9.6e below) that did not affect
1294 the 0.9.6 release series:
1296 Remote buffer overflow in SSL3 protocol - an attacker could
1297 supply an oversized master key in Kerberos-enabled versions.
1299 [Ben Laurie (CHATS)]
1301 *) Change the SSL kerb5 codes to match RFC 2712.
1304 *) Make -nameopt work fully for req and add -reqopt switch.
1305 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
1307 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
1308 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
1310 *) Make sure tests can be performed even if the corresponding algorithms
1311 have been removed entirely. This was also the last step to make
1312 OpenSSL compilable with DJGPP under all reasonable conditions.
1313 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
1315 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
1316 to allow version independent disabling of normally unselected ciphers,
1317 which may be activated as a side-effect of selecting a single cipher.
1319 (E.g., cipher list string "RSA" enables ciphersuites that are left
1320 out of "ALL" because they do not provide symmetric encryption.
1321 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
1322 [Lutz Jaenicke, Bodo Moeller]
1324 *) Add appropriate support for separate platform-dependent build
1325 directories. The recommended way to make a platform-dependent
1326 build directory is the following (tested on Linux), maybe with
1329 # Place yourself outside of the OpenSSL source tree. In
1330 # this example, the environment variable OPENSSL_SOURCE
1331 # is assumed to contain the absolute OpenSSL source directory.
1332 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
1333 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
1334 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
1335 mkdir -p `dirname $F`
1336 ln -s $OPENSSL_SOURCE/$F $F
1339 To be absolutely sure not to disturb the source tree, a "make clean"
1340 is a good thing. If it isn't successfull, don't worry about it,
1341 it probably means the source directory is very clean.
1344 *) Make sure any ENGINE control commands make local copies of string
1345 pointers passed to them whenever necessary. Otherwise it is possible
1346 the caller may have overwritten (or deallocated) the original string
1347 data when a later ENGINE operation tries to use the stored values.
1348 [Götz Babin-Ebell <babinebell@trustcenter.de>]
1350 *) Improve diagnostics in file reading and command-line digests.
1351 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
1353 *) Add AES modes CFB and OFB to the object database. Correct an
1354 error in AES-CFB decryption.
1357 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
1358 allows existing EVP_CIPHER_CTX structures to be reused after
1359 calling EVP_*Final(). This behaviour is used by encryption
1360 BIOs and some applications. This has the side effect that
1361 applications must explicitly clean up cipher contexts with
1362 EVP_CIPHER_CTX_cleanup() or they will leak memory.
1365 *) Check the values of dna and dnb in bn_mul_recursive before calling
1366 bn_mul_comba (a non zero value means the a or b arrays do not contain
1367 n2 elements) and fallback to bn_mul_normal if either is not zero.
1370 *) Fix escaping of non-ASCII characters when using the -subj option
1371 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
1374 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
1375 form for "surname", serialNumber has no short form.
1376 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
1377 therefore remove "mail" short name for "internet 7".
1378 The OID for unique identifiers in X509 certificates is
1379 x500UniqueIdentifier, not uniqueIdentifier.
1380 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
1383 *) Add an "init" command to the ENGINE config module and auto initialize
1384 ENGINEs. Without any "init" command the ENGINE will be initialized
1385 after all ctrl commands have been executed on it. If init=1 the
1386 ENGINE is initailized at that point (ctrls before that point are run
1387 on the uninitialized ENGINE and after on the initialized one). If
1388 init=0 then the ENGINE will not be iniatialized at all.
1391 *) Fix the 'app_verify_callback' interface so that the user-defined
1392 argument is actually passed to the callback: In the
1393 SSL_CTX_set_cert_verify_callback() prototype, the callback
1394 declaration has been changed from
1397 int (*cb)(X509_STORE_CTX *,void *);
1398 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
1399 i=s->ctx->app_verify_callback(&ctx)
1400 has been changed into
1401 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
1403 To update applications using SSL_CTX_set_cert_verify_callback(),
1404 a dummy argument can be added to their callback functions.
1405 [D. K. Smetters <smetters@parc.xerox.com>]
1407 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
1408 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
1410 *) Add and OPENSSL_LOAD_CONF define which will cause
1411 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
1412 This allows older applications to transparently support certain
1413 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
1414 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
1415 load the config file and OPENSSL_add_all_algorithms_conf() which will
1416 always load it have also been added.
1419 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
1420 Adjust NIDs and EVP layer.
1421 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1423 *) Config modules support in openssl utility.
1425 Most commands now load modules from the config file,
1426 though in a few (such as version) this isn't done
1427 because it couldn't be used for anything.
1429 In the case of ca and req the config file used is
1430 the same as the utility itself: that is the -config
1431 command line option can be used to specify an
1435 *) Move default behaviour from OPENSSL_config(). If appname is NULL
1436 use "openssl_conf" if filename is NULL use default openssl config file.
1439 *) Add an argument to OPENSSL_config() to allow the use of an alternative
1440 config section name. Add a new flag to tolerate a missing config file
1441 and move code to CONF_modules_load_file().
1444 *) Support for crypto accelerator cards from Accelerated Encryption
1445 Processing, www.aep.ie. (Use engine 'aep')
1446 The support was copied from 0.9.6c [engine] and adapted/corrected
1447 to work with the new engine framework.
1448 [AEP Inc. and Richard Levitte]
1450 *) Support for SureWare crypto accelerator cards from Baltimore
1451 Technologies. (Use engine 'sureware')
1452 The support was copied from 0.9.6c [engine] and adapted
1453 to work with the new engine framework.
1456 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
1457 make the newer ENGINE framework commands for the CHIL engine work.
1458 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
1460 *) Make it possible to produce shared libraries on ReliantUNIX.
1461 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
1463 *) Add the configuration target debug-linux-ppro.
1464 Make 'openssl rsa' use the general key loading routines
1465 implemented in apps.c, and make those routines able to
1466 handle the key format FORMAT_NETSCAPE and the variant
1468 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1470 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
1471 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
1473 *) Add -keyform to rsautl, and document -engine.
1474 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
1476 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
1477 BIO_R_NO_SUCH_FILE error code rather than the generic
1478 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
1481 *) Add new functions
1483 ERR_peek_last_error_line
1484 ERR_peek_last_error_line_data.
1485 These are similar to
1488 ERR_peek_error_line_data,
1489 but report on the latest error recorded rather than the first one
1490 still in the error queue.
1491 [Ben Laurie, Bodo Moeller]
1493 *) default_algorithms option in ENGINE config module. This allows things
1495 default_algorithms = ALL
1496 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
1499 *) Prelminary ENGINE config module.
1502 *) New experimental application configuration code.
1505 *) Change the AES code to follow the same name structure as all other
1506 symmetric ciphers, and behave the same way. Move everything to
1507 the directory crypto/aes, thereby obsoleting crypto/rijndael.
1508 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
1510 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
1511 [Ben Laurie and Theo de Raadt]
1513 *) Add option to output public keys in req command.
1514 [Massimiliano Pala madwolf@openca.org]
1516 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
1517 (up to about 10% better than before for P-192 and P-224).
1520 *) New functions/macros
1522 SSL_CTX_set_msg_callback(ctx, cb)
1523 SSL_CTX_set_msg_callback_arg(ctx, arg)
1524 SSL_set_msg_callback(ssl, cb)
1525 SSL_set_msg_callback_arg(ssl, arg)
1527 to request calling a callback function
1529 void cb(int write_p, int version, int content_type,
1530 const void *buf, size_t len, SSL *ssl, void *arg)
1532 whenever a protocol message has been completely received
1533 (write_p == 0) or sent (write_p == 1). Here 'version' is the
1534 protocol version according to which the SSL library interprets
1535 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
1536 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
1537 the content type as defined in the SSL 3.0/TLS 1.0 protocol
1538 specification (change_cipher_spec(20), alert(21), handshake(22)).
1539 'buf' and 'len' point to the actual message, 'ssl' to the
1540 SSL object, and 'arg' is the application-defined value set by
1541 SSL[_CTX]_set_msg_callback_arg().
1543 'openssl s_client' and 'openssl s_server' have new '-msg' options
1544 to enable a callback that displays all protocol messages.
1547 *) Change the shared library support so shared libraries are built as
1548 soon as the corresponding static library is finished, and thereby get
1549 openssl and the test programs linked against the shared library.
1550 This still only happens when the keyword "shard" has been given to
1551 the configuration scripts.
1553 NOTE: shared library support is still an experimental thing, and
1554 backward binary compatibility is still not guaranteed.
1555 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
1557 *) Add support for Subject Information Access extension.
1558 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1560 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
1561 additional bytes when new memory had to be allocated, not just
1562 when reusing an existing buffer.
1565 *) New command line and configuration option 'utf8' for the req command.
1566 This allows field values to be specified as UTF8 strings.
1569 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
1570 runs for the former and machine-readable output for the latter.
1573 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
1574 of the e-mail address in the DN (i.e., it will go into a certificate
1575 extension only). The new configuration file option 'email_in_dn = no'
1576 has the same effect.
1577 [Massimiliano Pala madwolf@openca.org]
1579 *) Change all functions with names starting with des_ to be starting
1580 with DES_ instead. Add wrappers that are compatible with libdes,
1581 but are named _ossl_old_des_*. Finally, add macros that map the
1582 des_* symbols to the corresponding _ossl_old_des_* if libdes
1583 compatibility is desired. If OpenSSL 0.9.6c compatibility is
1584 desired, the des_* symbols will be mapped to DES_*, with one
1587 Since we provide two compatibility mappings, the user needs to
1588 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
1589 compatibility is desired. The default (i.e., when that macro
1590 isn't defined) is OpenSSL 0.9.6c compatibility.
1592 There are also macros that enable and disable the support of old
1593 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
1594 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
1595 are defined, the default will apply: to support the old des routines.
1597 In either case, one must include openssl/des.h to get the correct
1598 definitions. Do not try to just include openssl/des_old.h, that
1601 NOTE: This is a major break of an old API into a new one. Software
1602 authors are encouraged to switch to the DES_ style functions. Some
1603 time in the future, des_old.h and the libdes compatibility functions
1604 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
1605 default), and then completely removed.
1608 *) Test for certificates which contain unsupported critical extensions.
1609 If such a certificate is found during a verify operation it is
1610 rejected by default: this behaviour can be overridden by either
1611 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
1612 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
1613 X509_supported_extension() has also been added which returns 1 if a
1614 particular extension is supported.
1617 *) Modify the behaviour of EVP cipher functions in similar way to digests
1618 to retain compatibility with existing code.
1621 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
1622 compatibility with existing code. In particular the 'ctx' parameter does
1623 not have to be to be initialized before the call to EVP_DigestInit() and
1624 it is tidied up after a call to EVP_DigestFinal(). New function
1625 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
1626 EVP_MD_CTX_copy() changed to not require the destination to be
1627 initialized valid and new function EVP_MD_CTX_copy_ex() added which
1628 requires the destination to be valid.
1630 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
1631 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
1634 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
1635 so that complete 'Handshake' protocol structures are kept in memory
1636 instead of overwriting 'msg_type' and 'length' with 'body' data.
1639 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
1640 [Massimo Santin via Richard Levitte]
1642 *) Major restructuring to the underlying ENGINE code. This includes
1643 reduction of linker bloat, separation of pure "ENGINE" manipulation
1644 (initialisation, etc) from functionality dealing with implementations
1645 of specific crypto iterfaces. This change also introduces integrated
1646 support for symmetric ciphers and digest implementations - so ENGINEs
1647 can now accelerate these by providing EVP_CIPHER and EVP_MD
1648 implementations of their own. This is detailed in crypto/engine/README
1649 as it couldn't be adequately described here. However, there are a few
1650 API changes worth noting - some RSA, DSA, DH, and RAND functions that
1651 were changed in the original introduction of ENGINE code have now
1652 reverted back - the hooking from this code to ENGINE is now a good
1653 deal more passive and at run-time, operations deal directly with
1654 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
1655 dereferencing through an ENGINE pointer any more. Also, the ENGINE
1656 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
1657 they were not being used by the framework as there is no concept of a
1658 BIGNUM_METHOD and they could not be generalised to the new
1659 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
1660 ENGINE_cpy() has been removed as it cannot be consistently defined in
1664 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
1667 *) Change mkdef.pl to sort symbols that get the same entry number,
1668 and make sure the automatically generated functions ERR_load_*
1669 become part of libeay.num as well.
1672 *) New function SSL_renegotiate_pending(). This returns true once
1673 renegotiation has been requested (either SSL_renegotiate() call
1674 or HelloRequest/ClientHello receveived from the peer) and becomes
1675 false once a handshake has been completed.
1676 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
1677 sends a HelloRequest, but does not ensure that a handshake takes
1678 place. SSL_renegotiate_pending() is useful for checking if the
1679 client has followed the request.)
1682 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
1683 By default, clients may request session resumption even during
1684 renegotiation (if session ID contexts permit); with this option,
1685 session resumption is possible only in the first handshake.
1687 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
1688 more bits available for options that should not be part of
1689 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
1692 *) Add some demos for certificate and certificate request creation.
1695 *) Make maximum certificate chain size accepted from the peer application
1696 settable (SSL*_get/set_max_cert_list()), as proposed by
1697 "Douglas E. Engert" <deengert@anl.gov>.
1700 *) Add support for shared libraries for Unixware-7
1701 (Boyd Lynn Gerber <gerberb@zenez.com>).
1704 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
1705 be done prior to destruction. Use this to unload error strings from
1706 ENGINEs that load their own error strings. NB: This adds two new API
1707 functions to "get" and "set" this destroy handler in an ENGINE.
1710 *) Alter all existing ENGINE implementations (except "openssl" and
1711 "openbsd") to dynamically instantiate their own error strings. This
1712 makes them more flexible to be built both as statically-linked ENGINEs
1713 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
1714 Also, add stub code to each that makes building them as self-contained
1715 shared-libraries easier (see README.ENGINE).
1718 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
1719 implementations into applications that are completely implemented in
1720 self-contained shared-libraries. The "dynamic" ENGINE exposes control
1721 commands that can be used to configure what shared-library to load and
1722 to control aspects of the way it is handled. Also, made an update to
1723 the README.ENGINE file that brings its information up-to-date and
1724 provides some information and instructions on the "dynamic" ENGINE
1725 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
1728 *) Make it possible to unload ranges of ERR strings with a new
1729 "ERR_unload_strings" function.
1732 *) Add a copy() function to EVP_MD.
1735 *) Make EVP_MD routines take a context pointer instead of just the
1736 md_data void pointer.
1739 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
1740 that the digest can only process a single chunk of data
1741 (typically because it is provided by a piece of
1742 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
1743 is only going to provide a single chunk of data, and hence the
1744 framework needn't accumulate the data for oneshot drivers.
1747 *) As with "ERR", make it possible to replace the underlying "ex_data"
1748 functions. This change also alters the storage and management of global
1749 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
1750 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
1751 index counters. The API functions that use this state have been changed
1752 to take a "class_index" rather than pointers to the class's local STACK
1753 and counter, and there is now an API function to dynamically create new
1754 classes. This centralisation allows us to (a) plug a lot of the
1755 thread-safety problems that existed, and (b) makes it possible to clean
1756 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
1757 such data would previously have always leaked in application code and
1758 workarounds were in place to make the memory debugging turn a blind eye
1759 to it. Application code that doesn't use this new function will still
1760 leak as before, but their memory debugging output will announce it now
1761 rather than letting it slide.
1763 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
1764 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
1765 has a return value to indicate success or failure.
1768 *) Make it possible to replace the underlying "ERR" functions such that the
1769 global state (2 LHASH tables and 2 locks) is only used by the "default"
1770 implementation. This change also adds two functions to "get" and "set"
1771 the implementation prior to it being automatically set the first time
1772 any other ERR function takes place. Ie. an application can call "get",
1773 pass the return value to a module it has just loaded, and that module
1774 can call its own "set" function using that value. This means the
1775 module's "ERR" operations will use (and modify) the error state in the
1776 application and not in its own statically linked copy of OpenSSL code.
1779 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
1780 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
1781 the operation, and provides a more encapsulated way for external code
1782 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
1783 to use these functions rather than manually incrementing the counts.
1785 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
1788 *) Add EVP test program.
1791 *) Add symmetric cipher support to ENGINE. Expect the API to change!
1794 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
1795 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
1796 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
1797 These allow a CRL to be built without having to access X509_CRL fields
1798 directly. Modify 'ca' application to use new functions.
1801 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
1802 bug workarounds. Rollback attack detection is a security feature.
1803 The problem will only arise on OpenSSL servers when TLSv1 is not
1804 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
1805 Software authors not wanting to support TLSv1 will have special reasons
1806 for their choice and can explicitly enable this option.
1807 [Bodo Moeller, Lutz Jaenicke]
1809 *) Rationalise EVP so it can be extended: don't include a union of
1810 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
1811 (similar to those existing for EVP_CIPHER_CTX).
1816 EVP_MD_CTX_init(&md); /* new function call */
1817 EVP_DigestInit(&md, EVP_sha1());
1818 EVP_DigestUpdate(&md, in, len);
1819 EVP_DigestFinal(&md, out, NULL);
1820 EVP_MD_CTX_cleanup(&md); /* new function call */
1824 *) Make DES key schedule conform to the usual scheme, as well as
1825 correcting its structure. This means that calls to DES functions
1826 now have to pass a pointer to a des_key_schedule instead of a
1827 plain des_key_schedule (which was actually always a pointer
1830 des_key_schedule ks;
1832 des_set_key_checked(..., &ks);
1833 des_ncbc_encrypt(..., &ks, ...);
1835 (Note that a later change renames 'des_...' into 'DES_...'.)
1838 *) Initial reduction of linker bloat: the use of some functions, such as
1839 PEM causes large amounts of unused functions to be linked in due to
1840 poor organisation. For example pem_all.c contains every PEM function
1841 which has a knock on effect of linking in large amounts of (unused)
1842 ASN1 code. Grouping together similar functions and splitting unrelated
1843 functions prevents this.
1846 *) Cleanup of EVP macros.
1849 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1850 correct _ecb suffix.
1853 *) Add initial OCSP responder support to ocsp application. The
1854 revocation information is handled using the text based index
1855 use by the ca application. The responder can either handle
1856 requests generated internally, supplied in files (for example
1857 via a CGI script) or using an internal minimal server.
1860 *) Add configuration choices to get zlib compression for TLS.
1863 *) Changes to Kerberos SSL for RFC 2712 compliance:
1864 1. Implemented real KerberosWrapper, instead of just using
1865 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1866 2. Implemented optional authenticator field of KerberosWrapper.
1868 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1869 and authenticator structs; see crypto/krb5/.
1871 Generalized Kerberos calls to support multiple Kerberos libraries.
1872 [Vern Staats <staatsvr@asc.hpc.mil>,
1873 Jeffrey Altman <jaltman@columbia.edu>
1874 via Richard Levitte]
1876 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1877 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1878 values for each of the key sizes rather than having just
1879 parameters (and 'speed' generating keys each time).
1882 *) Speed up EVP routines.
1885 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1886 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1887 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1888 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1890 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1891 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1892 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1895 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1897 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1900 *) Added the OS2-EMX target.
1901 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1903 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1904 to support NCONF routines in extension code. New function CONF_set_nconf()
1905 to allow functions which take an NCONF to also handle the old LHASH
1906 structure: this means that the old CONF compatible routines can be
1907 retained (in particular wrt extensions) without having to duplicate the
1908 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1911 *) Enhance the general user interface with mechanisms for inner control
1912 and with possibilities to have yes/no kind of prompts.
1915 *) Change all calls to low level digest routines in the library and
1916 applications to use EVP. Add missing calls to HMAC_cleanup() and
1917 don't assume HMAC_CTX can be copied using memcpy().
1918 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1920 *) Add the possibility to control engines through control names but with
1921 arbitrary arguments instead of just a string.
1922 Change the key loaders to take a UI_METHOD instead of a callback
1923 function pointer. NOTE: this breaks binary compatibility with earlier
1924 versions of OpenSSL [engine].
1925 Adapt the nCipher code for these new conditions and add a card insertion
1929 *) Enhance the general user interface with mechanisms to better support
1930 dialog box interfaces, application-defined prompts, the possibility
1931 to use defaults (for example default passwords from somewhere else)
1932 and interrupts/cancellations.
1935 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1936 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1939 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1940 tidy up some unnecessarily weird code in 'sk_new()').
1941 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1943 *) Change the key loading routines for ENGINEs to use the same kind
1944 callback (pem_password_cb) as all other routines that need this
1948 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1949 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1950 than this minimum value is recommended.
1953 *) New random seeder for OpenVMS, using the system process statistics
1954 that are easily reachable.
1957 *) Windows apparently can't transparently handle global
1958 variables defined in DLLs. Initialisations such as:
1960 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1962 wont compile. This is used by the any applications that need to
1963 declare their own ASN1 modules. This was fixed by adding the option
1964 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1965 needed for static libraries under Win32.
1968 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1969 setting of purpose and trust fields. New X509_STORE trust and
1970 purpose functions and tidy up setting in other SSL functions.
1973 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1974 structure. These are inherited by X509_STORE_CTX when it is
1975 initialised. This allows various defaults to be set in the
1976 X509_STORE structure (such as flags for CRL checking and custom
1977 purpose or trust settings) for functions which only use X509_STORE_CTX
1978 internally such as S/MIME.
1980 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1981 trust settings if they are not set in X509_STORE. This allows X509_STORE
1982 purposes and trust (in S/MIME for example) to override any set by default.
1984 Add command line options for CRL checking to smime, s_client and s_server
1988 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1989 are set then the CRL is looked up in the X509_STORE structure and
1990 its validity and signature checked, then if the certificate is found
1991 in the CRL the verify fails with a revoked error.
1993 Various new CRL related callbacks added to X509_STORE_CTX structure.
1995 Command line options added to 'verify' application to support this.
1997 This needs some additional work, such as being able to handle multiple
1998 CRLs with different times, extension based lookup (rather than just
1999 by subject name) and ultimately more complete V2 CRL extension
2003 *) Add a general user interface API (crypto/ui/). This is designed
2004 to replace things like des_read_password and friends (backward
2005 compatibility functions using this new API are provided).
2006 The purpose is to remove prompting functions from the DES code
2007 section as well as provide for prompting through dialog boxes in
2008 a window system and the like.
2011 *) Add "ex_data" support to ENGINE so implementations can add state at a
2012 per-structure level rather than having to store it globally.
2015 *) Make it possible for ENGINE structures to be copied when retrieved by
2016 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2017 This causes the "original" ENGINE structure to act like a template,
2018 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
2019 operational state can be localised to each ENGINE structure, despite the
2020 fact they all share the same "methods". New ENGINE structures returned in
2021 this case have no functional references and the return value is the single
2022 structural reference. This matches the single structural reference returned
2023 by ENGINE_by_id() normally, when it is incremented on the pre-existing
2027 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
2028 needs to match any other type at all we need to manually clear the
2032 *) Changes to the "openssl engine" utility to include;
2033 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
2034 about an ENGINE's available control commands.
2035 - executing control commands from command line arguments using the
2036 '-pre' and '-post' switches. '-post' is only used if '-t' is
2037 specified and the ENGINE is successfully initialised. The syntax for
2038 the individual commands are colon-separated, for example;
2039 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
2042 *) New dynamic control command support for ENGINEs. ENGINEs can now
2043 declare their own commands (numbers), names (strings), descriptions,
2044 and input types for run-time discovery by calling applications. A
2045 subset of these commands are implicitly classed as "executable"
2046 depending on their input type, and only these can be invoked through
2047 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
2048 can be based on user input, config files, etc). The distinction is
2049 that "executable" commands cannot return anything other than a boolean
2050 result and can only support numeric or string input, whereas some
2051 discoverable commands may only be for direct use through
2052 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
2053 pointers, or other custom uses. The "executable" commands are to
2054 support parameterisations of ENGINE behaviour that can be
2055 unambiguously defined by ENGINEs and used consistently across any
2056 OpenSSL-based application. Commands have been added to all the
2057 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
2058 control over shared-library paths without source code alterations.
2061 *) Changed all ENGINE implementations to dynamically allocate their
2062 ENGINEs rather than declaring them statically. Apart from this being
2063 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
2064 this also allows the implementations to compile without using the
2065 internal engine_int.h header.
2068 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
2069 'const' value. Any code that should be able to modify a RAND_METHOD
2070 should already have non-const pointers to it (ie. they should only
2071 modify their own ones).
2074 *) Made a variety of little tweaks to the ENGINE code.
2075 - "atalla" and "ubsec" string definitions were moved from header files
2076 to C code. "nuron" string definitions were placed in variables
2077 rather than hard-coded - allowing parameterisation of these values
2078 later on via ctrl() commands.
2079 - Removed unused "#if 0"'d code.
2080 - Fixed engine list iteration code so it uses ENGINE_free() to release
2081 structural references.
2082 - Constified the RAND_METHOD element of ENGINE structures.
2083 - Constified various get/set functions as appropriate and added
2084 missing functions (including a catch-all ENGINE_cpy that duplicates
2085 all ENGINE values onto a new ENGINE except reference counts/state).
2086 - Removed NULL parameter checks in get/set functions. Setting a method
2087 or function to NULL is a way of cancelling out a previously set
2088 value. Passing a NULL ENGINE parameter is just plain stupid anyway
2089 and doesn't justify the extra error symbols and code.
2090 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
2091 flags from engine_int.h to engine.h.
2092 - Changed prototypes for ENGINE handler functions (init(), finish(),
2093 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
2096 *) Implement binary inversion algorithm for BN_mod_inverse in addition
2097 to the algorithm using long division. The binary algorithm can be
2098 used only if the modulus is odd. On 32-bit systems, it is faster
2099 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
2100 roughly 5-15% for 256-bit moduli), so we use it only for moduli
2101 up to 450 bits. In 64-bit environments, the binary algorithm
2102 appears to be advantageous for much longer moduli; here we use it
2103 for moduli up to 2048 bits.
2106 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
2107 could not support the combine flag in choice fields.
2110 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
2111 extensions from a certificate request to the certificate.
2114 *) Allow multiple 'certopt' and 'nameopt' options to be separated
2115 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
2116 file: this allows the display of the certificate about to be
2117 signed to be customised, to allow certain fields to be included
2118 or excluded and extension details. The old system didn't display
2119 multicharacter strings properly, omitted fields not in the policy
2120 and couldn't display additional details such as extensions.
2123 *) Function EC_POINTs_mul for multiple scalar multiplication
2124 of an arbitrary number of elliptic curve points
2125 \sum scalars[i]*points[i],
2126 optionally including the generator defined for the EC_GROUP:
2127 scalar*generator + \sum scalars[i]*points[i].
2129 EC_POINT_mul is a simple wrapper function for the typical case
2130 that the point list has just one item (besides the optional
2134 *) First EC_METHODs for curves over GF(p):
2136 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
2137 operations and provides various method functions that can also
2138 operate with faster implementations of modular arithmetic.
2140 EC_GFp_mont_method() reuses most functions that are part of
2141 EC_GFp_simple_method, but uses Montgomery arithmetic.
2143 [Bodo Moeller; point addition and point doubling
2144 implementation directly derived from source code provided by
2145 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
2147 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
2148 crypto/ec/ec_lib.c):
2150 Curves are EC_GROUP objects (with an optional group generator)
2151 based on EC_METHODs that are built into the library.
2153 Points are EC_POINT objects based on EC_GROUP objects.
2155 Most of the framework would be able to handle curves over arbitrary
2156 finite fields, but as there are no obvious types for fields other
2157 than GF(p), some functions are limited to that for now.
2160 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
2161 that the file contains a complete HTTP response.
2164 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
2165 change the def and num file printf format specifier from "%-40sXXX"
2166 to "%-39s XXX". The latter will always guarantee a space after the
2167 field while the former will cause them to run together if the field
2168 is 40 of more characters long.
2171 *) Constify the cipher and digest 'method' functions and structures
2172 and modify related functions to take constant EVP_MD and EVP_CIPHER
2176 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
2177 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
2180 *) Modify EVP_Digest*() routines so they now return values. Although the
2181 internal software routines can never fail additional hardware versions
2185 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
2187 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
2188 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
2191 ERR_R_NESTED_ASN1_ERROR
2193 ERR_R_MISSING_ASN1_EOS
2194 were 4 .. 9, conflicting with
2195 ERR_LIB_RSA (= ERR_R_RSA_LIB)
2197 ERR_LIB_PEM (= ERR_R_PEM_LIB).
2198 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
2200 Add new error code 'ERR_R_INTERNAL_ERROR'.
2203 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
2207 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
2208 sets the subject name for a new request or supersedes the
2209 subject name in a given request. Formats that can be parsed are
2210 'CN=Some Name, OU=myOU, C=IT'
2212 'CN=Some Name/OU=myOU/C=IT'.
2214 Add options '-batch' and '-verbose' to 'openssl req'.
2215 [Massimiliano Pala <madwolf@hackmasters.net>]
2217 *) Introduce the possibility to access global variables through
2218 functions on platform were that's the best way to handle exporting
2219 global variables in shared libraries. To enable this functionality,
2220 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
2221 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
2222 is normally done by Configure or something similar).
2224 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
2225 in the source file (foo.c) like this:
2227 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
2228 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
2230 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
2231 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
2233 OPENSSL_DECLARE_GLOBAL(int,foo);
2234 #define foo OPENSSL_GLOBAL_REF(foo)
2235 OPENSSL_DECLARE_GLOBAL(double,bar);
2236 #define bar OPENSSL_GLOBAL_REF(bar)
2238 The #defines are very important, and therefore so is including the
2239 header file everywhere where the defined globals are used.
2241 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
2242 of ASN.1 items, but that structure is a bit different.
2244 The largest change is in util/mkdef.pl which has been enhanced with
2245 better and easier to understand logic to choose which symbols should
2246 go into the Windows .def files as well as a number of fixes and code
2247 cleanup (among others, algorithm keywords are now sorted
2248 lexicographically to avoid constant rewrites).
2251 *) In BN_div() keep a copy of the sign of 'num' before writing the
2252 result to 'rm' because if rm==num the value will be overwritten
2253 and produce the wrong result if 'num' is negative: this caused
2254 problems with BN_mod() and BN_nnmod().
2257 *) Function OCSP_request_verify(). This checks the signature on an
2258 OCSP request and verifies the signer certificate. The signer
2259 certificate is just checked for a generic purpose and OCSP request
2263 *) Add OCSP_check_validity() function to check the validity of OCSP
2264 responses. OCSP responses are prepared in real time and may only
2265 be a few seconds old. Simply checking that the current time lies
2266 between thisUpdate and nextUpdate max reject otherwise valid responses
2267 caused by either OCSP responder or client clock inaccuracy. Instead
2268 we allow thisUpdate and nextUpdate to fall within a certain period of
2269 the current time. The age of the response can also optionally be
2270 checked. Two new options -validity_period and -status_age added to
2274 *) If signature or public key algorithm is unrecognized print out its
2275 OID rather that just UNKNOWN.
2278 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
2279 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
2280 ID to be generated from the issuer certificate alone which can then be
2281 passed to OCSP_id_issuer_cmp().
2284 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
2285 ASN1 modules to export functions returning ASN1_ITEM pointers
2286 instead of the ASN1_ITEM structures themselves. This adds several
2287 new macros which allow the underlying ASN1 function/structure to
2288 be accessed transparently. As a result code should not use ASN1_ITEM
2289 references directly (such as &X509_it) but instead use the relevant
2290 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
2291 use of the new ASN1 code on platforms where exporting structures
2292 is problematical (for example in shared libraries) but exporting
2293 functions returning pointers to structures is not.
2296 *) Add support for overriding the generation of SSL/TLS session IDs.
2297 These callbacks can be registered either in an SSL_CTX or per SSL.
2298 The purpose of this is to allow applications to control, if they wish,
2299 the arbitrary values chosen for use as session IDs, particularly as it
2300 can be useful for session caching in multiple-server environments. A
2301 command-line switch for testing this (and any client code that wishes
2302 to use such a feature) has been added to "s_server".
2303 [Geoff Thorpe, Lutz Jaenicke]
2305 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
2306 of the form '#if defined(...) || defined(...) || ...' and
2307 '#if !defined(...) && !defined(...) && ...'. This also avoids
2308 the growing number of special cases it was previously handling.
2311 *) Make all configuration macros available for application by making
2312 sure they are available in opensslconf.h, by giving them names starting
2313 with "OPENSSL_" to avoid conflicts with other packages and by making
2314 sure e_os2.h will cover all platform-specific cases together with
2316 Additionally, it is now possible to define configuration/platform-
2317 specific names (called "system identities"). In the C code, these
2318 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
2319 macro with the name beginning with "OPENSSL_SYS_", which is determined
2320 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
2324 *) New option -set_serial to 'req' and 'x509' this allows the serial
2325 number to use to be specified on the command line. Previously self
2326 signed certificates were hard coded with serial number 0 and the
2327 CA options of 'x509' had to use a serial number in a file which was
2331 *) New options to 'ca' utility to support V2 CRL entry extensions.
2332 Currently CRL reason, invalidity date and hold instruction are
2333 supported. Add new CRL extensions to V3 code and some new objects.
2336 *) New function EVP_CIPHER_CTX_set_padding() this is used to
2337 disable standard block padding (aka PKCS#5 padding) in the EVP
2338 API, which was previously mandatory. This means that the data is
2339 not padded in any way and so the total length much be a multiple
2340 of the block size, otherwise an error occurs.
2343 *) Initial (incomplete) OCSP SSL support.
2346 *) New function OCSP_parse_url(). This splits up a URL into its host,
2347 port and path components: primarily to parse OCSP URLs. New -url
2348 option to ocsp utility.
2351 *) New nonce behavior. The return value of OCSP_check_nonce() now
2352 reflects the various checks performed. Applications can decide
2353 whether to tolerate certain situations such as an absent nonce
2354 in a response when one was present in a request: the ocsp application
2355 just prints out a warning. New function OCSP_add1_basic_nonce()
2356 this is to allow responders to include a nonce in a response even if
2357 the request is nonce-less.
2360 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
2361 skipped when using openssl x509 multiple times on a single input file,
2362 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
2365 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
2366 set string type: to handle setting ASN1_TIME structures. Fix ca
2367 utility to correctly initialize revocation date of CRLs.
2370 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
2371 the clients preferred ciphersuites and rather use its own preferences.
2372 Should help to work around M$ SGC (Server Gated Cryptography) bug in
2373 Internet Explorer by ensuring unchanged hash method during stepup.
2374 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
2377 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
2378 to aes and add a new 'exist' option to print out symbols that don't
2382 *) Additional options to ocsp utility to allow flags to be set and
2383 additional certificates supplied.
2386 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
2387 OCSP client a number of certificate to only verify the response
2391 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
2392 handle the new API. Currently only ECB, CBC modes supported. Add new
2395 Add TLS AES ciphersuites as described in RFC3268, "Advanced
2396 Encryption Standard (AES) Ciphersuites for Transport Layer
2397 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
2398 not enabled by default and were not part of the "ALL" ciphersuite
2399 alias because they were not yet official; they could be
2400 explicitly requested by specifying the "AESdraft" ciphersuite
2401 group alias. In the final release of OpenSSL 0.9.7, the group
2402 alias is called "AES" and is part of "ALL".)
2403 [Ben Laurie, Steve Henson, Bodo Moeller]
2405 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
2406 request to response.
2409 *) Functions for OCSP responders. OCSP_request_onereq_count(),
2410 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
2411 extract information from a certificate request. OCSP_response_create()
2412 creates a response and optionally adds a basic response structure.
2413 OCSP_basic_add1_status() adds a complete single response to a basic
2414 response and returns the OCSP_SINGLERESP structure just added (to allow
2415 extensions to be included for example). OCSP_basic_add1_cert() adds a
2416 certificate to a basic response and OCSP_basic_sign() signs a basic
2417 response with various flags. New helper functions ASN1_TIME_check()
2418 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
2419 (converts ASN1_TIME to GeneralizedTime).
2422 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
2423 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
2424 structure from a certificate. X509_pubkey_digest() digests the public_key
2425 contents: this is used in various key identifiers.
2428 *) Make sk_sort() tolerate a NULL argument.
2429 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
2431 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
2432 passed by the function are trusted implicitly. If any of them signed the
2433 response then it is assumed to be valid and is not verified.
2436 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
2437 to data. This was previously part of the PKCS7 ASN1 code. This
2438 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
2439 [Steve Henson, reported by Kenneth R. Robinette
2440 <support@securenetterm.com>]
2442 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
2443 routines: without these tracing memory leaks is very painful.
2444 Fix leaks in PKCS12 and PKCS7 routines.
2447 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
2448 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
2449 effectively meant GeneralizedTime would never be used. Now it
2450 is initialised to -1 but X509_time_adj() now has to check the value
2451 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
2452 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
2453 [Steve Henson, reported by Kenneth R. Robinette
2454 <support@securenetterm.com>]
2456 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
2457 result in a zero length in the ASN1_INTEGER structure which was
2458 not consistent with the structure when d2i_ASN1_INTEGER() was used
2459 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
2460 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
2461 where it did not print out a minus for negative ASN1_INTEGER.
2464 *) Add summary printout to ocsp utility. The various functions which
2465 convert status values to strings have been renamed to:
2466 OCSP_response_status_str(), OCSP_cert_status_str() and
2467 OCSP_crl_reason_str() and are no longer static. New options
2468 to verify nonce values and to disable verification. OCSP response
2469 printout format cleaned up.
2472 *) Add additional OCSP certificate checks. These are those specified
2473 in RFC2560. This consists of two separate checks: the CA of the
2474 certificate being checked must either be the OCSP signer certificate
2475 or the issuer of the OCSP signer certificate. In the latter case the
2476 OCSP signer certificate must contain the OCSP signing extended key
2477 usage. This check is performed by attempting to match the OCSP
2478 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
2479 in the OCSP_CERTID structures of the response.
2482 *) Initial OCSP certificate verification added to OCSP_basic_verify()
2483 and related routines. This uses the standard OpenSSL certificate
2484 verify routines to perform initial checks (just CA validity) and
2485 to obtain the certificate chain. Then additional checks will be
2486 performed on the chain. Currently the root CA is checked to see
2487 if it is explicitly trusted for OCSP signing. This is used to set
2488 a root CA as a global signing root: that is any certificate that
2489 chains to that CA is an acceptable OCSP signing certificate.
2492 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
2493 extensions from a separate configuration file.
2494 As when reading extensions from the main configuration file,
2495 the '-extensions ...' option may be used for specifying the
2497 [Massimiliano Pala <madwolf@comune.modena.it>]
2499 *) New OCSP utility. Allows OCSP requests to be generated or
2500 read. The request can be sent to a responder and the output
2501 parsed, outputed or printed in text form. Not complete yet:
2502 still needs to check the OCSP response validity.
2505 *) New subcommands for 'openssl ca':
2506 'openssl ca -status <serial>' prints the status of the cert with
2507 the given serial number (according to the index file).
2508 'openssl ca -updatedb' updates the expiry status of certificates
2510 [Massimiliano Pala <madwolf@comune.modena.it>]
2512 *) New '-newreq-nodes' command option to CA.pl. This is like
2513 '-newreq', but calls 'openssl req' with the '-nodes' option
2514 so that the resulting key is not encrypted.
2515 [Damien Miller <djm@mindrot.org>]
2517 *) New configuration for the GNU Hurd.
2518 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
2520 *) Initial code to implement OCSP basic response verify. This
2521 is currently incomplete. Currently just finds the signer's
2522 certificate and verifies the signature on the response.
2525 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
2526 value of OPENSSLDIR. This is available via the new '-d' option
2527 to 'openssl version', and is also included in 'openssl version -a'.
2530 *) Allowing defining memory allocation callbacks that will be given
2531 file name and line number information in additional arguments
2532 (a const char* and an int). The basic functionality remains, as
2533 well as the original possibility to just replace malloc(),
2534 realloc() and free() by functions that do not know about these
2535 additional arguments. To register and find out the current
2536 settings for extended allocation functions, the following
2537 functions are provided:
2539 CRYPTO_set_mem_ex_functions
2540 CRYPTO_set_locked_mem_ex_functions
2541 CRYPTO_get_mem_ex_functions
2542 CRYPTO_get_locked_mem_ex_functions
2544 These work the same way as CRYPTO_set_mem_functions and friends.
2545 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
2546 extended allocation function is enabled.
2547 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
2548 a conventional allocation function is enabled.
2549 [Richard Levitte, Bodo Moeller]
2551 *) Finish off removing the remaining LHASH function pointer casts.
2552 There should no longer be any prototype-casting required when using
2553 the LHASH abstraction, and any casts that remain are "bugs". See
2554 the callback types and macros at the head of lhash.h for details
2555 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
2558 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
2559 If /dev/[u]random devices are not available or do not return enough
2560 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
2562 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
2563 /etc/entropy will be queried once each in this sequence, quering stops
2564 when enough entropy was collected without querying more sockets.
2567 *) Change the Unix RAND_poll() variant to be able to poll several
2568 random devices, as specified by DEVRANDOM, until a sufficient amount
2569 of data has been collected. We spend at most 10 ms on each file
2570 (select timeout) and read in non-blocking mode. DEVRANDOM now
2571 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
2572 (previously it was just the string "/dev/urandom"), so on typical
2573 platforms the 10 ms delay will never occur.
2574 Also separate out the Unix variant to its own file, rand_unix.c.
2575 For VMS, there's a currently-empty rand_vms.c.
2578 *) Move OCSP client related routines to ocsp_cl.c. These
2579 provide utility functions which an application needing
2580 to issue a request to an OCSP responder and analyse the
2581 response will typically need: as opposed to those which an
2582 OCSP responder itself would need which will be added later.
2584 OCSP_request_sign() signs an OCSP request with an API similar
2585 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
2586 response. OCSP_response_get1_basic() extracts basic response
2587 from response. OCSP_resp_find_status(): finds and extracts status
2588 information from an OCSP_CERTID structure (which will be created
2589 when the request structure is built). These are built from lower
2590 level functions which work on OCSP_SINGLERESP structures but
2591 wont normally be used unless the application wishes to examine
2592 extensions in the OCSP response for example.
2594 Replace nonce routines with a pair of functions.
2595 OCSP_request_add1_nonce() adds a nonce value and optionally
2596 generates a random value. OCSP_check_nonce() checks the
2597 validity of the nonce in an OCSP response.
2600 *) Change function OCSP_request_add() to OCSP_request_add0_id().
2601 This doesn't copy the supplied OCSP_CERTID and avoids the
2602 need to free up the newly created id. Change return type
2603 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
2604 This can then be used to add extensions to the request.
2605 Deleted OCSP_request_new(), since most of its functionality
2606 is now in OCSP_REQUEST_new() (and the case insensitive name
2607 clash) apart from the ability to set the request name which
2608 will be added elsewhere.
2611 *) Update OCSP API. Remove obsolete extensions argument from
2612 various functions. Extensions are now handled using the new
2613 OCSP extension code. New simple OCSP HTTP function which
2614 can be used to send requests and parse the response.
2617 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
2618 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
2619 uses the special reorder version of SET OF to sort the attributes
2620 and reorder them to match the encoded order. This resolves a long
2621 standing problem: a verify on a PKCS7 structure just after signing
2622 it used to fail because the attribute order did not match the
2623 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
2624 it uses the received order. This is necessary to tolerate some broken
2625 software that does not order SET OF. This is handled by encoding
2626 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
2627 to produce the required SET OF.
2630 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
2631 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
2632 files to get correct declarations of the ASN.1 item variables.
2635 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
2636 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
2637 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
2638 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
2639 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
2640 ASN1_ITEM and no wrapper functions.
2643 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
2644 replace the old function pointer based I/O routines. Change most of
2645 the *_d2i_bio() and *_d2i_fp() functions to use these.
2648 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
2649 lines, recognice more "algorithms" that can be deselected, and make
2650 it complain about algorithm deselection that isn't recognised.
2653 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
2654 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
2655 to use new functions. Add NO_ASN1_OLD which can be set to remove
2656 some old style ASN1 functions: this can be used to determine if old
2657 code will still work when these eventually go away.
2660 *) New extension functions for OCSP structures, these follow the
2661 same conventions as certificates and CRLs.
2664 *) New function X509V3_add1_i2d(). This automatically encodes and
2665 adds an extension. Its behaviour can be customised with various
2666 flags to append, replace or delete. Various wrappers added for
2667 certifcates and CRLs.
2670 *) Fix to avoid calling the underlying ASN1 print routine when
2671 an extension cannot be parsed. Correct a typo in the
2672 OCSP_SERVICELOC extension. Tidy up print OCSP format.
2675 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
2676 entries for variables.
2679 *) Add functionality to apps/openssl.c for detecting locking
2680 problems: As the program is single-threaded, all we have
2681 to do is register a locking callback using an array for
2682 storing which locks are currently held by the program.
2685 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
2686 SSL_get_ex_data_X509_STORE_idx(), which is used in
2687 ssl_verify_cert_chain() and thus can be called at any time
2688 during TLS/SSL handshakes so that thread-safety is essential.
2689 Unfortunately, the ex_data design is not at all suited
2690 for multi-threaded use, so it probably should be abolished.
2693 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
2694 [Broadcom, tweaked and integrated by Geoff Thorpe]
2696 *) Move common extension printing code to new function
2697 X509V3_print_extensions(). Reorganise OCSP print routines and
2698 implement some needed OCSP ASN1 functions. Add OCSP extensions.
2701 *) New function X509_signature_print() to remove duplication in some
2705 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
2706 set (this was treated exactly the same as SET OF previously). This
2707 is used to reorder the STACK representing the structure to match the
2708 encoding. This will be used to get round a problem where a PKCS7
2709 structure which was signed could not be verified because the STACK
2710 order did not reflect the encoded order.
2713 *) Reimplement the OCSP ASN1 module using the new code.
2716 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
2717 for its ASN1 operations. The old style function pointers still exist
2718 for now but they will eventually go away.
2721 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
2722 completely replaces the old ASN1 functionality with a table driven
2723 encoder and decoder which interprets an ASN1_ITEM structure describing
2724 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
2725 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
2726 has also been converted to the new form.
2729 *) Change BN_mod_exp_recp so that negative moduli are tolerated
2730 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
2731 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
2732 for negative moduli.
2735 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
2736 of not touching the result's sign bit.
2739 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
2743 *) Changed the LHASH code to use prototypes for callbacks, and created
2744 macros to declare and implement thin (optionally static) functions
2745 that provide type-safety and avoid function pointer casting for the
2746 type-specific callbacks.
2749 *) Added Kerberos Cipher Suites to be used with TLS, as written in
2751 [Veers Staats <staatsvr@asc.hpc.mil>,
2752 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
2754 *) Reformat the FAQ so the different questions and answers can be divided
2755 in sections depending on the subject.
2758 *) Have the zlib compression code load ZLIB.DLL dynamically under
2762 *) New function BN_mod_sqrt for computing square roots modulo a prime
2763 (using the probabilistic Tonelli-Shanks algorithm unless
2764 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
2765 be handled deterministically).
2766 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2768 *) Make BN_mod_inverse faster by explicitly handling small quotients
2769 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
2770 512 bits], about 30% for larger ones [1024 or 2048 bits].)
2773 *) New function BN_kronecker.
2776 *) Fix BN_gcd so that it works on negative inputs; the result is
2777 positive unless both parameters are zero.
2778 Previously something reasonably close to an infinite loop was
2779 possible because numbers could be growing instead of shrinking
2780 in the implementation of Euclid's algorithm.
2783 *) Fix BN_is_word() and BN_is_one() macros to take into account the
2784 sign of the number in question.
2786 Fix BN_is_word(a,w) to work correctly for w == 0.
2788 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
2789 because its test if the absolute value of 'a' equals 'w'.
2790 Note that BN_abs_is_word does *not* handle w == 0 reliably;
2791 it exists mostly for use in the implementations of BN_is_zero(),
2792 BN_is_one(), and BN_is_word().
2795 *) New function BN_swap.
2798 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
2799 the exponentiation functions are more likely to produce reasonable
2800 results on negative inputs.
2803 *) Change BN_mod_mul so that the result is always non-negative.
2804 Previously, it could be negative if one of the factors was negative;
2805 I don't think anyone really wanted that behaviour.
2808 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
2809 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
2810 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
2811 and add new functions:
2820 BN_mod_lshift1_quick
2824 These functions always generate non-negative results.
2826 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
2827 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
2829 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
2830 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
2831 be reduced modulo m.
2832 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2835 The following entry accidentily appeared in the CHANGES file
2836 distributed with OpenSSL 0.9.7. The modifications described in
2837 it do *not* apply to OpenSSL 0.9.7.
2839 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2840 was actually never needed) and in BN_mul(). The removal in BN_mul()
2841 required a small change in bn_mul_part_recursive() and the addition
2842 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2843 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2844 bn_sub_words() and bn_add_words() except they take arrays with
2849 *) In 'openssl passwd', verify passwords read from the terminal
2850 unless the '-salt' option is used (which usually means that
2851 verification would just waste user's time since the resulting
2852 hash is going to be compared with some given password hash)
2853 or the new '-noverify' option is used.
2855 This is an incompatible change, but it does not affect
2856 non-interactive use of 'openssl passwd' (passwords on the command
2857 line, '-stdin' option, '-in ...' option) and thus should not
2861 *) Remove all references to RSAref, since there's no more need for it.
2864 *) Make DSO load along a path given through an environment variable
2865 (SHLIB_PATH) with shl_load().
2868 *) Constify the ENGINE code as a result of BIGNUM constification.
2869 Also constify the RSA code and most things related to it. In a
2870 few places, most notable in the depth of the ASN.1 code, ugly
2871 casts back to non-const were required (to be solved at a later
2875 *) Make it so the openssl application has all engines loaded by default.
2878 *) Constify the BIGNUM routines a little more.
2881 *) Add the following functions:
2883 ENGINE_load_cswift()
2885 ENGINE_load_atalla()
2887 ENGINE_load_builtin_engines()
2889 That way, an application can itself choose if external engines that
2890 are built-in in OpenSSL shall ever be used or not. The benefit is
2891 that applications won't have to be linked with libdl or other dso
2892 libraries unless it's really needed.
2894 Changed 'openssl engine' to load all engines on demand.
2895 Changed the engine header files to avoid the duplication of some
2896 declarations (they differed!).
2899 *) 'openssl engine' can now list capabilities.
2902 *) Better error reporting in 'openssl engine'.
2905 *) Never call load_dh_param(NULL) in s_server.
2908 *) Add engine application. It can currently list engines by name and
2909 identity, and test if they are actually available.
2912 *) Improve RPM specification file by forcing symbolic linking and making
2913 sure the installed documentation is also owned by root.root.
2914 [Damien Miller <djm@mindrot.org>]
2916 *) Give the OpenSSL applications more possibilities to make use of
2917 keys (public as well as private) handled by engines.
2920 *) Add OCSP code that comes from CertCo.
2923 *) Add VMS support for the Rijndael code.
2926 *) Added untested support for Nuron crypto accelerator.
2929 *) Add support for external cryptographic devices. This code was
2930 previously distributed separately as the "engine" branch.
2931 [Geoff Thorpe, Richard Levitte]
2933 *) Rework the filename-translation in the DSO code. It is now possible to
2934 have far greater control over how a "name" is turned into a filename
2935 depending on the operating environment and any oddities about the
2936 different shared library filenames on each system.
2939 *) Support threads on FreeBSD-elf in Configure.
2942 *) Fix for SHA1 assembly problem with MASM: it produces
2943 warnings about corrupt line number information when assembling
2944 with debugging information. This is caused by the overlapping
2946 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2949 NCONF_get_number() has no error checking at all. As a replacement,
2950 NCONF_get_number_e() is defined (_e for "error checking") and is
2951 promoted strongly. The old NCONF_get_number is kept around for
2952 binary backward compatibility.
2953 Make it possible for methods to load from something other than a BIO,
2954 by providing a function pointer that is given a name instead of a BIO.
2955 For example, this could be used to load configuration data from an
2959 *) Fix for non blocking accept BIOs. Added new I/O special reason
2960 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2961 with non blocking I/O was not possible because no retry code was
2962 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2966 *) Added the beginnings of Rijndael support.
2969 *) Fix for bug in DirectoryString mask setting. Add support for
2970 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2971 to allow certificate printing to more controllable, additional
2972 'certopt' option to 'x509' to allow new printing options to be
2976 *) Clean old EAY MD5 hack from e_os.h.
2979 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
2981 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2982 by using the Codenomicon TLS Test Tool (CAN-2004-0079)
2983 [Joe Orton, Steve Henson]
2985 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
2987 *) Fix additional bug revealed by the NISCC test suite:
2989 Stop bug triggering large recursion when presented with
2990 certain ASN.1 tags (CAN-2003-0851)
2993 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
2995 *) Fix various bugs revealed by running the NISCC test suite:
2997 Stop out of bounds reads in the ASN1 code when presented with
2998 invalid tags (CAN-2003-0543 and CAN-2003-0544).
3000 If verify callback ignores invalid public key errors don't try to check
3001 certificate signature with the NULL public key.
3005 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3006 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3010 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3011 extra data after the compression methods not only for TLS 1.0
3012 but also for SSL 3.0 (as required by the specification).
3013 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3015 *) Change X509_certificate_type() to mark the key as exported/exportable
3016 when it's 512 *bits* long, not 512 bytes.
3019 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
3021 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3022 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3023 a protocol version number mismatch like a decryption error
3024 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3027 *) Turn on RSA blinding by default in the default implementation
3028 to avoid a timing attack. Applications that don't want it can call
3029 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3030 They would be ill-advised to do so in most cases.
3031 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3033 *) Change RSA blinding code so that it works when the PRNG is not
3034 seeded (in this case, the secret RSA exponent is abused as
3035 an unpredictable seed -- if it is not unpredictable, there
3036 is no point in blinding anyway). Make RSA blinding thread-safe
3037 by remembering the creator's thread ID in rsa->blinding and
3038 having all other threads use local one-time blinding factors
3039 (this requires more computation than sharing rsa->blinding, but
3040 avoids excessive locking; and if an RSA object is not shared
3041 between threads, blinding will still be very fast).
3044 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
3046 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3047 via timing by performing a MAC computation even if incorrrect
3048 block cipher padding has been found. This is a countermeasure
3049 against active attacks where the attacker has to distinguish
3050 between bad padding and a MAC verification error. (CAN-2003-0078)
3052 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3053 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3054 Martin Vuagnoux (EPFL, Ilion)]
3056 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
3058 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
3059 memory from it's contents. This is done with a counter that will
3060 place alternating values in each byte. This can be used to solve
3061 two issues: 1) the removal of calls to memset() by highly optimizing
3062 compilers, and 2) cleansing with other values than 0, since those can
3063 be read through on certain media, for example a swap space on disk.
3066 *) Bugfix: client side session caching did not work with external caching,
3067 because the session->cipher setting was not restored when reloading
3068 from the external cache. This problem was masked, when
3069 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
3070 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
3073 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
3074 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
3075 [Zeev Lieber <zeev-l@yahoo.com>]
3077 *) Undo an undocumented change introduced in 0.9.6e which caused
3078 repeated calls to OpenSSL_add_all_ciphers() and
3079 OpenSSL_add_all_digests() to be ignored, even after calling
3083 *) Change the default configuration reader to deal with last line not
3084 being properly terminated.
3087 *) Change X509_NAME_cmp() so it applies the special rules on handling
3088 DN values that are of type PrintableString, as well as RDNs of type
3089 emailAddress where the value has the type ia5String.
3090 [stefank@valicert.com via Richard Levitte]
3092 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
3093 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
3094 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
3095 the bitwise-OR of the two for use by the majority of applications
3096 wanting this behaviour, and update the docs. The documented
3097 behaviour and actual behaviour were inconsistent and had been
3098 changing anyway, so this is more a bug-fix than a behavioural
3100 [Geoff Thorpe, diagnosed by Nadav Har'El]
3102 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
3103 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
3106 *) Fix initialization code race conditions in
3107 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
3108 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
3109 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
3110 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
3111 ssl2_get_cipher_by_char(),
3112 ssl3_get_cipher_by_char().
3113 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
3115 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
3116 the cached sessions are flushed, as the remove_cb() might use ex_data
3117 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
3118 (see [openssl.org #212]).
3119 [Geoff Thorpe, Lutz Jaenicke]
3121 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
3122 length, instead of the encoding length to d2i_ASN1_OBJECT.
3125 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
3127 *) [In 0.9.6g-engine release:]
3128 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
3129 [Lynn Gazis <lgazis@rainbow.com>]
3131 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
3133 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
3134 and get fix the header length calculation.
3135 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
3136 Alon Kantor <alonk@checkpoint.com> (and others),
3139 *) Use proper error handling instead of 'assertions' in buffer
3140 overflow checks added in 0.9.6e. This prevents DoS (the
3141 assertions could call abort()).
3142 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
3144 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
3146 *) Add various sanity checks to asn1_get_length() to reject
3147 the ASN1 length bytes if they exceed sizeof(long), will appear
3148 negative or the content length exceeds the length of the
3150 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3152 *) Fix cipher selection routines: ciphers without encryption had no flags
3153 for the cipher strength set and where therefore not handled correctly
3154 by the selection routines (PR #130).
3157 *) Fix EVP_dsa_sha macro.
3161 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
3162 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
3163 that was added in OpenSSL 0.9.6d.
3165 As the countermeasure turned out to be incompatible with some
3166 broken SSL implementations, the new option is part of SSL_OP_ALL.
3167 SSL_OP_ALL is usually employed when compatibility with weird SSL
3168 implementations is desired (e.g. '-bugs' option to 's_client' and
3169 's_server'), so the new option is automatically set in many
3173 *) Changes in security patch:
3175 Changes marked "(CHATS)" were sponsored by the Defense Advanced
3176 Research Projects Agency (DARPA) and Air Force Research Laboratory,
3177 Air Force Materiel Command, USAF, under agreement number
3180 *) Add various sanity checks to asn1_get_length() to reject
3181 the ASN1 length bytes if they exceed sizeof(long), will appear
3182 negative or the content length exceeds the length of the
3183 supplied buffer. (CAN-2002-0659)
3184 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
3186 *) Assertions for various potential buffer overflows, not known to
3188 [Ben Laurie (CHATS)]
3190 *) Various temporary buffers to hold ASCII versions of integers were
3191 too small for 64 bit platforms. (CAN-2002-0655)
3192 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
3194 *) Remote buffer overflow in SSL3 protocol - an attacker could
3195 supply an oversized session ID to a client. (CAN-2002-0656)
3196 [Ben Laurie (CHATS)]
3198 *) Remote buffer overflow in SSL2 protocol - an attacker could
3199 supply an oversized client master key. (CAN-2002-0656)
3200 [Ben Laurie (CHATS)]
3202 Changes between 0.9.6c and 0.9.6d [9 May 2002]
3204 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
3205 encoded as NULL) with id-dsa-with-sha1.
3206 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
3208 *) Check various X509_...() return values in apps/req.c.
3209 [Nils Larsch <nla@trustcenter.de>]
3211 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
3212 an end-of-file condition would erronously be flagged, when the CRLF
3213 was just at the end of a processed block. The bug was discovered when
3214 processing data through a buffering memory BIO handing the data to a
3215 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
3216 <ptsekov@syntrex.com> and Nedelcho Stanev.
3219 *) Implement a countermeasure against a vulnerability recently found
3220 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
3221 before application data chunks to avoid the use of known IVs
3222 with data potentially chosen by the attacker.
3225 *) Fix length checks in ssl3_get_client_hello().
3228 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
3229 to prevent ssl3_read_internal() from incorrectly assuming that
3230 ssl3_read_bytes() found application data while handshake
3231 processing was enabled when in fact s->s3->in_read_app_data was
3232 merely automatically cleared during the initial handshake.
3233 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
3235 *) Fix object definitions for Private and Enterprise: they were not
3236 recognized in their shortname (=lowercase) representation. Extend
3237 obj_dat.pl to issue an error when using undefined keywords instead
3238 of silently ignoring the problem (Svenning Sorensen
3239 <sss@sss.dnsalias.net>).
3242 *) Fix DH_generate_parameters() so that it works for 'non-standard'
3243 generators, i.e. generators other than 2 and 5. (Previously, the
3244 code did not properly initialise the 'add' and 'rem' values to
3245 BN_generate_prime().)
3247 In the new general case, we do not insist that 'generator' is
3248 actually a primitive root: This requirement is rather pointless;
3249 a generator of the order-q subgroup is just as good, if not
3253 *) Map new X509 verification errors to alerts. Discovered and submitted by
3254 Tom Wu <tom@arcot.com>.
3257 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
3258 returning non-zero before the data has been completely received
3259 when using non-blocking I/O.
3260 [Bodo Moeller; problem pointed out by John Hughes]
3262 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
3263 [Ben Laurie, Lutz Jaenicke]
3265 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
3266 Yoram Zahavi <YoramZ@gilian.com>).
3269 *) Add information about CygWin 1.3 and on, and preserve proper
3270 configuration for the versions before that.
3271 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3273 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
3274 check whether we deal with a copy of a session and do not delete from
3275 the cache in this case. Problem reported by "Izhar Shoshani Levi"
3276 <izhar@checkpoint.com>.
3279 *) Do not store session data into the internal session cache, if it
3280 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
3281 flag is set). Proposed by Aslam <aslam@funk.com>.
3284 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
3288 *) [In 0.9.6d-engine release:]
3289 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3290 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3292 *) Add the configuration target linux-s390x.
3293 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
3295 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
3296 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
3297 variable as an indication that a ClientHello message has been
3298 received. As the flag value will be lost between multiple
3299 invocations of ssl3_accept when using non-blocking I/O, the
3300 function may not be aware that a handshake has actually taken
3301 place, thus preventing a new session from being added to the
3304 To avoid this problem, we now set s->new_session to 2 instead of
3305 using a local variable.
3306 [Lutz Jaenicke, Bodo Moeller]
3308 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
3309 if the SSL_R_LENGTH_MISMATCH error is detected.
3310 [Geoff Thorpe, Bodo Moeller]
3312 *) New 'shared_ldflag' column in Configure platform table.
3315 *) Fix EVP_CIPHER_mode macro.
3316 ["Dan S. Camper" <dan@bti.net>]
3318 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
3319 type, we must throw them away by setting rr->length to 0.
3320 [D P Chang <dpc@qualys.com>]
3322 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
3324 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
3325 <Dominikus.Scherkl@biodata.com>. (The previous implementation
3326 worked incorrectly for those cases where range = 10..._2 and
3327 3*range is two bits longer than range.)
3330 *) Only add signing time to PKCS7 structures if it is not already
3334 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
3335 OBJ_ld_ce should be OBJ_id_ce.
3336 Also some ip-pda OIDs in crypto/objects/objects.txt were
3337 incorrect (cf. RFC 3039).
3338 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
3340 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
3341 returns early because it has nothing to do.
3342 [Andy Schneider <andy.schneider@bjss.co.uk>]
3344 *) [In 0.9.6c-engine release:]
3345 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
3346 [Andy Schneider <andy.schneider@bjss.co.uk>]
3348 *) [In 0.9.6c-engine release:]
3349 Add support for Cryptographic Appliance's keyserver technology.
3350 (Use engine 'keyclient')
3351 [Cryptographic Appliances and Geoff Thorpe]
3353 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
3354 is called via tools/c89.sh because arguments have to be
3355 rearranged (all '-L' options must appear before the first object
3357 [Richard Shapiro <rshapiro@abinitio.com>]
3359 *) [In 0.9.6c-engine release:]
3360 Add support for Broadcom crypto accelerator cards, backported
3362 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
3364 *) [In 0.9.6c-engine release:]
3365 Add support for SureWare crypto accelerator cards from
3366 Baltimore Technologies. (Use engine 'sureware')
3367 [Baltimore Technologies and Mark Cox]
3369 *) [In 0.9.6c-engine release:]
3370 Add support for crypto accelerator cards from Accelerated
3371 Encryption Processing, www.aep.ie. (Use engine 'aep')
3372 [AEP Inc. and Mark Cox]
3374 *) Add a configuration entry for gcc on UnixWare.
3375 [Gary Benson <gbenson@redhat.com>]
3377 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
3378 messages are stored in a single piece (fixed-length part and
3379 variable-length part combined) and fix various bugs found on the way.
3382 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
3383 instead. BIO_gethostbyname() does not know what timeouts are
3384 appropriate, so entries would stay in cache even when they have
3386 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
3388 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
3389 faced with a pathologically small ClientHello fragment that does
3390 not contain client_version: Instead of aborting with an error,
3391 simply choose the highest available protocol version (i.e.,
3392 TLS 1.0 unless it is disabled). In practice, ClientHello
3393 messages are never sent like this, but this change gives us
3394 strictly correct behaviour at least for TLS.
3397 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
3398 never resets s->method to s->ctx->method when called from within
3399 one of the SSL handshake functions.
3400 [Bodo Moeller; problem pointed out by Niko Baric]
3402 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
3403 (sent using the client's version number) if client_version is
3404 smaller than the protocol version in use. Also change
3405 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
3406 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
3407 the client will at least see that alert.
3410 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
3414 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
3415 client receives HelloRequest while in a handshake.
3416 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
3418 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
3419 should end in 'break', not 'goto end' which circuments various
3420 cleanups done in state SSL_ST_OK. But session related stuff
3421 must be disabled for SSL_ST_OK in the case that we just sent a
3424 Also avoid some overhead by not calling ssl_init_wbio_buffer()
3425 before just sending a HelloRequest.
3426 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
3428 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
3429 reveal whether illegal block cipher padding was found or a MAC
3430 verification error occured. (Neither SSLerr() codes nor alerts
3431 are directly visible to potential attackers, but the information
3432 may leak via logfiles.)
3434 Similar changes are not required for the SSL 2.0 implementation
3435 because the number of padding bytes is sent in clear for SSL 2.0,
3436 and the extra bytes are just ignored. However ssl/s2_pkt.c
3437 failed to verify that the purported number of padding bytes is in
3441 *) Add OpenUNIX-8 support including shared libraries
3442 (Boyd Lynn Gerber <gerberb@zenez.com>).
3445 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
3446 'wristwatch attack' using huge encoding parameters (cf.
3447 James H. Manger's CRYPTO 2001 paper). Note that the
3448 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
3449 encoding parameters and hence was not vulnerable.
3452 *) BN_sqr() bug fix.
3453 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
3455 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
3456 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
3457 followed by modular reduction.
3458 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
3460 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
3461 equivalent based on BN_pseudo_rand() instead of BN_rand().
3464 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
3465 This function was broken, as the check for a new client hello message
3466 to handle SGC did not allow these large messages.
3467 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
3470 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
3473 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
3474 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
3477 *) Rework the configuration and shared library support for Tru64 Unix.
3478 The configuration part makes use of modern compiler features and
3479 still retains old compiler behavior for those that run older versions
3480 of the OS. The shared library support part includes a variant that
3481 uses the RPATH feature, and is available through the special
3482 configuration target "alpha-cc-rpath", which will never be selected
3484 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
3486 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
3487 with the same message size as in ssl3_get_certificate_request().
3488 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
3489 messages might inadvertently be reject as too long.
3490 [Petr Lampa <lampa@fee.vutbr.cz>]
3492 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
3495 *) Modified SSL library such that the verify_callback that has been set
3496 specificly for an SSL object with SSL_set_verify() is actually being
3497 used. Before the change, a verify_callback set with this function was
3498 ignored and the verify_callback() set in the SSL_CTX at the time of
3499 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
3500 to allow the necessary settings.
3503 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
3504 explicitly to NULL, as at least on Solaris 8 this seems not always to be
3505 done automatically (in contradiction to the requirements of the C
3506 standard). This made problems when used from OpenSSH.
3509 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
3510 dh->length and always used
3512 BN_rand_range(priv_key, dh->p).
3514 BN_rand_range() is not necessary for Diffie-Hellman, and this
3515 specific range makes Diffie-Hellman unnecessarily inefficient if
3516 dh->length (recommended exponent length) is much smaller than the
3517 length of dh->p. We could use BN_rand_range() if the order of
3518 the subgroup was stored in the DH structure, but we only have
3523 BN_rand(priv_key, l, ...)
3525 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
3531 RSA_eay_public_encrypt
3532 RSA_eay_private_decrypt
3533 RSA_eay_private_encrypt (signing)
3534 RSA_eay_public_decrypt (signature verification)
3536 (default implementations for RSA_public_encrypt,
3537 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
3538 always reject numbers >= n.
3541 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
3542 to synchronize access to 'locking_thread'. This is necessary on
3543 systems where access to 'locking_thread' (an 'unsigned long'
3544 variable) is not atomic.
3547 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
3548 *before* setting the 'crypto_lock_rand' flag. The previous code had
3549 a race condition if 0 is a valid thread ID.
3550 [Travis Vitek <vitek@roguewave.com>]
3552 *) Add support for shared libraries under Irix.
3553 [Albert Chin-A-Young <china@thewrittenword.com>]
3555 *) Add configuration option to build on Linux on both big-endian and
3557 [Ralf Baechle <ralf@uni-koblenz.de>]
3559 *) Add the possibility to create shared libraries on HP-UX.
3562 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
3564 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
3565 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
3566 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
3567 PRNG state recovery was possible based on the output of
3568 one PRNG request appropriately sized to gain knowledge on
3569 'md' followed by enough consecutive 1-byte PRNG requests
3570 to traverse all of 'state'.
3572 1. When updating 'md_local' (the current thread's copy of 'md')
3573 during PRNG output generation, hash all of the previous
3574 'md_local' value, not just the half used for PRNG output.
3576 2. Make the number of bytes from 'state' included into the hash
3577 independent from the number of PRNG bytes requested.
3579 The first measure alone would be sufficient to avoid
3580 Markku-Juhani's attack. (Actually it had never occurred
3581 to me that the half of 'md_local' used for chaining was the
3582 half from which PRNG output bytes were taken -- I had always
3583 assumed that the secret half would be used.) The second
3584 measure makes sure that additional data from 'state' is never
3585 mixed into 'md_local' in small portions; this heuristically
3586 further strengthens the PRNG.
3589 *) Fix crypto/bn/asm/mips3.s.
3592 *) When only the key is given to "enc", the IV is undefined. Print out
3593 an error message in this case.
3596 *) Handle special case when X509_NAME is empty in X509 printing routines.
3599 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
3600 positive and less than q.
3603 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
3604 used: it isn't thread safe and the add_lock_callback should handle
3606 [Paul Rose <Paul.Rose@bridge.com>]
3608 *) Verify that incoming data obeys the block size in
3609 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
3613 [Ulf Möller, Bodo Möller]
3615 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
3616 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
3617 when fixing the server behaviour for backwards-compatible 'client
3618 hello' messages. (Note that the attack is impractical against
3619 SSL 3.0 and TLS 1.0 anyway because length and version checking
3620 means that the probability of guessing a valid ciphertext is
3621 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
3624 Before 0.9.5, the countermeasure (hide the error by generating a
3625 random 'decryption result') did not work properly because
3626 ERR_clear_error() was missing, meaning that SSL_get_error() would
3627 detect the supposedly ignored error.
3629 Both problems are now fixed.
3632 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
3633 (previously it was 1024).
3636 *) Fix for compatibility mode trust settings: ignore trust settings
3637 unless some valid trust or reject settings are present.
3640 *) Fix for blowfish EVP: its a variable length cipher.
3643 *) Fix various bugs related to DSA S/MIME verification. Handle missing
3644 parameters in DSA public key structures and return an error in the
3645 DSA routines if parameters are absent.
3648 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
3649 in the current directory if neither $RANDFILE nor $HOME was set.
3650 RAND_file_name() in 0.9.6a returned NULL in this case. This has
3651 caused some confusion to Windows users who haven't defined $HOME.
3652 Thus RAND_file_name() is changed again: e_os.h can define a
3653 DEFAULT_HOME, which will be used if $HOME is not set.
3654 For Windows, we use "C:"; on other platforms, we still require
3655 environment variables.
3657 *) Move 'if (!initialized) RAND_poll()' into regions protected by
3658 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
3659 having multiple threads call RAND_poll() concurrently.
3662 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
3663 combination of a flag and a thread ID variable.
3664 Otherwise while one thread is in ssleay_rand_bytes (which sets the
3665 flag), *other* threads can enter ssleay_add_bytes without obeying
3666 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
3667 that they do not hold after the first thread unsets add_do_not_lock).
3670 *) Change bctest again: '-x' expressions are not available in all
3674 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
3676 *) Fix a couple of memory leaks in PKCS7_dataDecode()
3677 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
3679 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
3680 the default extension for executables, if any. Also, make the perl
3681 scripts that use symlink() to test if it really exists and use "cp"
projects / openssl.git / blob