5 Changes between 0.9.7 and 0.9.8 [xx XXX 2002]
7 *) Change the "progress" mechanism used in key-generation and
8 primality testing to functions that take a new BN_GENCB pointer in
9 place of callback/argument pairs. The new API functions have "_ex"
10 postfixes and the older functions are reimplemented as wrappers for
11 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
12 declarations of the old functions to help (graceful) attempts to
13 migrate to the new functions. Also, the new key-generation API
14 functions operate on a caller-supplied key-structure and return
15 success/failure rather than returning a key or NULL - this is to
16 help make "keygen" another member function of RSA_METHOD etc.
19 *) Change the ZLIB compression method to be stateful, and make it
20 available to TLS with the number defined in
21 draft-ietf-tls-compression-04.txt.
24 *) Add the ASN.1 structures and functions for CertificatePair, which
25 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
27 CertificatePair ::= SEQUENCE {
28 forward [0] Certificate OPTIONAL,
29 reverse [1] Certificate OPTIONAL,
30 -- at least one of the pair shall be present -- }
32 Also implement the PEM functions to read and write certificate
33 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
35 This needed to be defined, mostly for the sake of the LDAP
36 attribute crossCertificatePair, but may prove useful elsewhere as
40 *) Make it possible to inhibit symlinking of shared libraries in
41 Makefile.shared, for Cygwin's sake.
44 *) Extend the BIGNUM API by creating new macros that behave like
47 void BN_set_sign(BIGNUM *a, int neg);
48 int BN_get_sign(const BIGNUM *a);
50 and avoid the need to access 'a->neg' directly in applications.
51 [Nils Larsch <nla@trustcenter.de>]
53 *) Implement fast modular reduction for pseudo-Mersenne primes
54 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
55 EC_GROUP_new_curve_GFp() will now automatically use this
57 [Nils Larsch <nla@trustcenter.de>]
59 *) Add new lock type (CRYPTO_LOCK_BN).
62 *) Change the ENGINE framework to automatically load engines
63 dynamically from specific directories unless they could be
64 found to already be built in or loaded. Move all the
65 current engines except for the cryptodev one to a new
67 The engines in engines/ are built as shared libraries if
68 the "shared" options was given to ./Configure or ./config.
69 Otherwise, they are inserted in libcrypto.a.
70 /usr/local/ssl/engines is the default directory for dynamic
71 engines, but that can be overriden at configure time through
72 the usual use of --prefix and/or --openssldir, and at run
73 time with the environment variable OPENSSL_ENGINES.
74 [Geoff Thorpe and Richard Levitte]
76 *) Add Makefile.shared, a helper makefile to build shared
77 libraries. Addapt Makefile.org.
80 *) Add version info to Win32 DLLs.
81 [Peter 'Luna' Runestig" <peter@runestig.com>]
83 *) Add new 'medium level' PKCS#12 API. Certificates and keys
84 can be added using this API to created arbitrary PKCS#12
85 files while avoiding the low level API.
87 New options to PKCS12_create(), key or cert can be NULL and
88 will then be omitted from the output file. The encryption
89 algorithm NIDs can be set to -1 for no encryption, the mac
90 iteration count can be set to 0 to omit the mac.
92 Enhance pkcs12 utility by making the -nokeys and -nocerts
93 options work when creating a PKCS#12 file. New option -nomac
94 to omit the mac, NONE can be set for an encryption algorithm.
95 New code is modified to use the enhanced PKCS12_create()
96 instead of the low level API.
99 *) Extend ASN1 encoder to support indefinite length constructed
100 encoding. This can output sequences tags and octet strings in
101 this form. Modify pk7_asn1.c to support indefinite length
102 encoding. This is experimental and needs additional code to
103 be useful, such as an ASN1 bio and some enhanced streaming
106 Extend template encode functionality so that tagging is passed
107 down to the template encoder.
110 *) Let 'openssl req' fail if an argument to '-newkey' is not
111 recognized instead of using RSA as a default.
114 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
115 As these are not official, they are not included in "ALL";
116 the "ECCdraft" ciphersuite group alias can be used to select them.
117 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
119 *) Add ECDH engine support.
120 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
122 *) Add ECDH in new directory crypto/ecdh/.
123 TODO: more general interface (return x coordinate, not its hash)
124 TODO: bug: pad x with leading zeros if necessary
125 [Douglas Stebila (Sun Microsystems Laboratories)]
127 *) Let BN_rand_range() abort with an error after 100 iterations
128 without success (which indicates a broken PRNG).
131 *) Change BN_mod_sqrt() so that it verifies that the input value
132 is really the square of the return value. (Previously,
133 BN_mod_sqrt would show GIGO behaviour.)
136 *) Add named elliptic curves over binary fields from X9.62, SECG,
137 and WAP/WTLS; add OIDs that were still missing.
139 [Sheueling Chang Shantz and Douglas Stebila
140 (Sun Microsystems Laboratories)]
142 *) Extend the EC library for elliptic curves over binary fields
143 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
146 EC_GF2m_simple_method
150 EC_GROUP_new_curve_GF2m
151 EC_GROUP_set_curve_GF2m
152 EC_GROUP_get_curve_GF2m
153 EC_POINT_set_affine_coordinates_GF2m
154 EC_POINT_get_affine_coordinates_GF2m
155 EC_POINT_set_compressed_coordinates_GF2m
157 Point compression for binary fields is disabled by default for
158 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
161 As binary polynomials are represented as BIGNUMs, various members
162 of the EC_GROUP and EC_POINT data structures can be shared
163 between the implementations for prime fields and binary fields;
164 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
165 are essentially identical to their ..._GFp counterparts.
166 (For simplicity, the '..._GFp' prefix has been dropped from
167 various internal method names.)
169 An internal 'field_div' method (similar to 'field_mul' and
170 'field_sqr') has been added; this is used only for binary fields.
172 [Sheueling Chang Shantz and Douglas Stebila
173 (Sun Microsystems Laboratories)]
175 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
176 through methods ('mul', 'precompute_mult').
178 The generic implementations (now internally called 'ec_wNAF_mul'
179 and 'ec_wNAF_precomputed_mult') remain the default if these
180 methods are undefined.
182 [Sheueling Chang Shantz and Douglas Stebila
183 (Sun Microsystems Laboratories)]
185 *) New function EC_GROUP_get_degree, which is defined through
186 EC_METHOD. For curves over prime fields, this returns the bit
187 length of the modulus.
189 [Sheueling Chang Shantz and Douglas Stebila
190 (Sun Microsystems Laboratories)]
192 *) New functions EC_GROUP_dup, EC_POINT_dup.
193 (These simply call ..._new and ..._copy).
195 [Sheueling Chang Shantz and Douglas Stebila
196 (Sun Microsystems Laboratories)]
198 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
199 Polynomials are represented as BIGNUMs (where the sign bit is not
200 used) in the following functions [macros]:
203 BN_GF2m_sub [= BN_GF2m_add]
204 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
205 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
206 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
208 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
209 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
210 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
211 BN_GF2m_cmp [= BN_ucmp]
213 (Note that only the 'mod' functions are actually for fields GF(2^m).
214 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
216 For some functions, an the irreducible polynomial defining a
217 field can be given as an 'unsigned int[]' with strictly
218 decreasing elements giving the indices of those bits that are set;
219 i.e., p[] represents the polynomial
220 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
222 p[0] > p[1] > ... > p[k] = 0.
223 This applies to the following functions:
228 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
229 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
232 BN_GF2m_mod_solve_quad_arr
236 Conversion can be performed by the following functions:
241 bntest.c has additional tests for binary polynomial arithmetic.
243 Two implementations for BN_GF2m_mod_div() are available.
244 The default algorithm simply uses BN_GF2m_mod_inv() and
245 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
246 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
247 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
249 [Sheueling Chang Shantz and Douglas Stebila
250 (Sun Microsystems Laboratories)]
252 *) Add new error code 'ERR_R_DISABLED' that can be used when some
253 functionality is disabled at compile-time.
254 [Douglas Stebila <douglas.stebila@sun.com>]
256 *) Change default behaviour of 'openssl asn1parse' so that more
257 information is visible when viewing, e.g., a certificate:
259 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
260 mode the content of non-printable OCTET STRINGs is output in a
261 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
262 avoid the appearance of a printable string.
263 [Nils Larsch <nla@trustcenter.de>]
265 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
267 EC_GROUP_set_asn1_flag()
268 EC_GROUP_get_asn1_flag()
269 EC_GROUP_set_point_conversion_form()
270 EC_GROUP_get_point_conversion_form()
271 These control ASN1 encoding details:
272 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
273 has been set to OPENSSL_EC_NAMED_CURVE.
274 - Points are encoded in uncompressed form by default; options for
275 asn1_for are as for point2oct, namely
276 POINT_CONVERSION_COMPRESSED
277 POINT_CONVERSION_UNCOMPRESSED
278 POINT_CONVERSION_HYBRID
280 Also add 'seed' and 'seed_len' members to EC_GROUP with access
284 EC_GROUP_get_seed_len()
285 This is used only for ASN1 purposes (so far).
286 [Nils Larsch <nla@trustcenter.de>]
288 *) Add 'field_type' member to EC_METHOD, which holds the NID
289 of the appropriate field type OID. The new function
290 EC_METHOD_get_field_type() returns this value.
291 [Nils Larsch <nla@trustcenter.de>]
298 providing useful interfaces to EC_POINT_point2oct() and
299 EC_POINT_oct2point().
300 [Nils Larsch <nla@trustcenter.de>]
302 *) Change internals of the EC library so that the functions
303 EC_GROUP_set_generator()
304 EC_GROUP_get_generator()
306 EC_GROUP_get_cofactor()
307 are implemented directly in crypto/ec/ec_lib.c and not dispatched
308 to methods, which would lead to unnecessary code duplication when
309 adding different types of curves.
310 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
312 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
313 arithmetic, and such that modified wNAFs are generated
314 (which avoid length expansion in many cases).
317 *) Add a function EC_GROUP_check_discriminant() (defined via
318 EC_METHOD) that verifies that the curve discriminant is non-zero.
320 Add a function EC_GROUP_check() that makes some sanity tests
321 on a EC_GROUP, its generator and order. This includes
322 EC_GROUP_check_discriminant().
323 [Nils Larsch <nla@trustcenter.de>]
325 *) Add ECDSA in new directory crypto/ecdsa/.
327 Add applications 'openssl ecparam' and 'openssl ecdsa'
328 (these are based on 'openssl dsaparam' and 'openssl dsa').
330 ECDSA support is also included in various other files across the
331 library. Most notably,
332 - 'openssl req' now has a '-newkey ecdsa:file' option;
333 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
334 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
335 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
336 them suitable for ECDSA where domain parameters must be
337 extracted before the specific public key;
338 - ECDSA engine support has been added.
339 [Nils Larsch <nla@trustcenter.de>]
341 *) Include some named elliptic curves, and add OIDs from X9.62,
342 SECG, and WAP/WTLS. Each curve can be obtained from the new
344 EC_GROUP_new_by_nid(),
345 and the list of available named curves can be obtained with
346 EC_get_builtin_curves().
347 Also add a 'curve_name' member to EC_GROUP objects, which can be
351 [Nils Larsch <nla@trustcenter.de, Bodo Moeller]
353 Changes between 0.9.6h and 0.9.7 [XX xxx 2002]
355 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
356 octets have been read, EOF or an error occurs. Without this change
357 some truncated ASN1 structures will not produce an error.
360 *) Disable Heimdal support, since it hasn't been fully implemented.
361 Still give the possibility to force the use of Heimdal, but with
362 warnings and a request that patches get sent to openssl-dev.
365 *) Add the VC-CE target, introduce the WINCE sysname, and add
366 INSTALL.WCE and appropriate conditionals to make it build.
367 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
369 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
370 cygssl-x.y.z.dll, where x, y and z are the major, minor and
371 edit numbers of the version.
372 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
374 *) Introduce safe string copy and catenation functions
375 (BUF_strlcpy() and BUF_strlcat()).
376 [Ben Laurie (CHATS) and Richard Levitte]
378 *) Avoid using fixed-size buffers for one-line DNs.
381 *) Add BUF_MEM_grow_clean() to avoid information leakage when
382 resizing buffers containing secrets, and use where appropriate.
385 *) Avoid using fixed size buffers for configuration file location.
388 *) Avoid filename truncation for various CA files.
391 *) Use sizeof in preference to magic numbers.
394 *) Avoid filename truncation in cert requests.
397 *) Add assertions to check for (supposedly impossible) buffer
401 *) Don't cache truncated DNS entries in the local cache (this could
402 potentially lead to a spoofing attack).
405 *) Fix various buffers to be large enough for hex/decimal
406 representations in a platform independent manner.
409 *) Add CRYPTO_realloc_clean() to avoid information leakage when
410 resizing buffers containing secrets, and use where appropriate.
413 *) Add BIO_indent() to avoid much slightly worrying code to do
417 *) Convert sprintf()/BIO_puts() to BIO_printf().
420 *) buffer_gets() could terminate with the buffer only half
424 *) Add assertions to prevent user-supplied crypto functions from
425 overflowing internal buffers by having large block sizes, etc.
428 *) New OPENSSL_assert() macro (similar to assert(), but enabled
432 *) Eliminate unused copy of key in RC4.
435 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
438 *) Fix off-by-one error in EGD path.
441 *) If RANDFILE path is too long, ignore instead of truncating.
444 *) Eliminate unused and incorrectly sized X.509 structure
448 *) Eliminate unused and dangerous function knumber().
451 *) Eliminate unused and dangerous structure, KSSL_ERR.
454 *) Protect against overlong session ID context length in an encoded
455 session object. Since these are local, this does not appear to be
459 *) Change from security patch (see 0.9.6e below) that did not affect
460 the 0.9.6 release series:
462 Remote buffer overflow in SSL3 protocol - an attacker could
463 supply an oversized master key in Kerberos-enabled versions.
467 *) Change the SSL kerb5 codes to match RFC 2712.
470 *) Make -nameopt work fully for req and add -reqopt switch.
471 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
473 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
474 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
476 *) Make sure tests can be performed even if the corresponding algorithms
477 have been removed entirely. This was also the last step to make
478 OpenSSL compilable with DJGPP under all reasonable conditions.
479 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
481 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
482 to allow version independent disabling of normally unselected ciphers,
483 which may be activated as a side-effect of selecting a single cipher.
485 (E.g., cipher list string "RSA" enables ciphersuites that are left
486 out of "ALL" because they do not provide symmetric encryption.
487 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
488 [Lutz Jaenicke, Bodo Moeller]
490 *) Add appropriate support for separate platform-dependent build
491 directories. The recommended way to make a platform-dependent
492 build directory is the following (tested on Linux), maybe with
495 # Place yourself outside of the OpenSSL source tree. In
496 # this example, the environment variable OPENSSL_SOURCE
497 # is assumed to contain the absolute OpenSSL source directory.
498 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
499 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
500 (cd $OPENSSL_SOURCE; find . -type f -o -type l) | while read F; do
501 mkdir -p `dirname $F`
502 ln -s $OPENSSL_SOURCE/$F $F
505 To be absolutely sure not to disturb the source tree, a "make clean"
506 is a good thing. If it isn't successfull, don't worry about it,
507 it probably means the source directory is very clean.
510 *) Make sure any ENGINE control commands make local copies of string
511 pointers passed to them whenever necessary. Otherwise it is possible
512 the caller may have overwritten (or deallocated) the original string
513 data when a later ENGINE operation tries to use the stored values.
514 [Götz Babin-Ebell <babinebell@trustcenter.de>]
516 *) Improve diagnostics in file reading and command-line digests.
517 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
519 *) Add AES modes CFB and OFB to the object database. Correct an
520 error in AES-CFB decryption.
523 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
524 allows existing EVP_CIPHER_CTX structures to be reused after
525 calling EVP_*Final(). This behaviour is used by encryption
526 BIOs and some applications. This has the side effect that
527 applications must explicitly clean up cipher contexts with
528 EVP_CIPHER_CTX_cleanup() or they will leak memory.
531 *) Check the values of dna and dnb in bn_mul_recursive before calling
532 bn_mul_comba (a non zero value means the a or b arrays do not contain
533 n2 elements) and fallback to bn_mul_normal if either is not zero.
536 *) Fix escaping of non-ASCII characters when using the -subj option
537 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
540 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
541 form for "surname", serialNumber has no short form.
542 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
543 therefore remove "mail" short name for "internet 7".
544 The OID for unique identifiers in X509 certificates is
545 x500UniqueIdentifier, not uniqueIdentifier.
546 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
549 *) Add an "init" command to the ENGINE config module and auto initialize
550 ENGINEs. Without any "init" command the ENGINE will be initialized
551 after all ctrl commands have been executed on it. If init=1 the
552 ENGINE is initailized at that point (ctrls before that point are run
553 on the uninitialized ENGINE and after on the initialized one). If
554 init=0 then the ENGINE will not be iniatialized at all.
557 *) Fix the 'app_verify_callback' interface so that the user-defined
558 argument is actually passed to the callback: In the
559 SSL_CTX_set_cert_verify_callback() prototype, the callback
560 declaration has been changed from
563 int (*cb)(X509_STORE_CTX *,void *);
564 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
565 i=s->ctx->app_verify_callback(&ctx)
566 has been changed into
567 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
569 To update applications using SSL_CTX_set_cert_verify_callback(),
570 a dummy argument can be added to their callback functions.
571 [D. K. Smetters <smetters@parc.xerox.com>]
573 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
574 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
576 *) Add and OPENSSL_LOAD_CONF define which will cause
577 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
578 This allows older applications to transparently support certain
579 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
580 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
581 load the config file and OPENSSL_add_all_algorithms_conf() which will
582 always load it have also been added.
585 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
586 Adjust NIDs and EVP layer.
587 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
589 *) Config modules support in openssl utility.
591 Most commands now load modules from the config file,
592 though in a few (such as version) this isn't done
593 because it couldn't be used for anything.
595 In the case of ca and req the config file used is
596 the same as the utility itself: that is the -config
597 command line option can be used to specify an
601 *) Move default behaviour from OPENSSL_config(). If appname is NULL
602 use "openssl_conf" if filename is NULL use default openssl config file.
605 *) Add an argument to OPENSSL_config() to allow the use of an alternative
606 config section name. Add a new flag to tolerate a missing config file
607 and move code to CONF_modules_load_file().
610 *) Support for crypto accelerator cards from Accelerated Encryption
611 Processing, www.aep.ie. (Use engine 'aep')
612 The support was copied from 0.9.6c [engine] and adapted/corrected
613 to work with the new engine framework.
614 [AEP Inc. and Richard Levitte]
616 *) Support for SureWare crypto accelerator cards from Baltimore
617 Technologies. (Use engine 'sureware')
618 The support was copied from 0.9.6c [engine] and adapted
619 to work with the new engine framework.
622 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
623 make the newer ENGINE framework commands for the CHIL engine work.
624 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
626 *) Make it possible to produce shared libraries on ReliantUNIX.
627 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
629 *) Add the configuration target debug-linux-ppro.
630 Make 'openssl rsa' use the general key loading routines
631 implemented in apps.c, and make those routines able to
632 handle the key format FORMAT_NETSCAPE and the variant
634 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
636 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
637 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
639 *) Add -keyform to rsautl, and document -engine.
640 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
642 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
643 BIO_R_NO_SUCH_FILE error code rather than the generic
644 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
649 ERR_peek_last_error_line
650 ERR_peek_last_error_line_data.
654 ERR_peek_error_line_data,
655 but report on the latest error recorded rather than the first one
656 still in the error queue.
657 [Ben Laurie, Bodo Moeller]
659 *) default_algorithms option in ENGINE config module. This allows things
661 default_algorithms = ALL
662 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
665 *) Prelminary ENGINE config module.
668 *) New experimental application configuration code.
671 *) Change the AES code to follow the same name structure as all other
672 symmetric ciphers, and behave the same way. Move everything to
673 the directory crypto/aes, thereby obsoleting crypto/rijndael.
674 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
676 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
677 [Ben Laurie and Theo de Raadt]
679 *) Add option to output public keys in req command.
680 [Massimiliano Pala madwolf@openca.org]
682 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
683 (up to about 10% better than before for P-192 and P-224).
686 *) New functions/macros
688 SSL_CTX_set_msg_callback(ctx, cb)
689 SSL_CTX_set_msg_callback_arg(ctx, arg)
690 SSL_set_msg_callback(ssl, cb)
691 SSL_set_msg_callback_arg(ssl, arg)
693 to request calling a callback function
695 void cb(int write_p, int version, int content_type,
696 const void *buf, size_t len, SSL *ssl, void *arg)
698 whenever a protocol message has been completely received
699 (write_p == 0) or sent (write_p == 1). Here 'version' is the
700 protocol version according to which the SSL library interprets
701 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
702 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
703 the content type as defined in the SSL 3.0/TLS 1.0 protocol
704 specification (change_cipher_spec(20), alert(21), handshake(22)).
705 'buf' and 'len' point to the actual message, 'ssl' to the
706 SSL object, and 'arg' is the application-defined value set by
707 SSL[_CTX]_set_msg_callback_arg().
709 'openssl s_client' and 'openssl s_server' have new '-msg' options
710 to enable a callback that displays all protocol messages.
713 *) Change the shared library support so shared libraries are built as
714 soon as the corresponding static library is finished, and thereby get
715 openssl and the test programs linked against the shared library.
716 This still only happens when the keyword "shard" has been given to
717 the configuration scripts.
719 NOTE: shared library support is still an experimental thing, and
720 backward binary compatibility is still not guaranteed.
721 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
723 *) Add support for Subject Information Access extension.
724 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
726 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
727 additional bytes when new memory had to be allocated, not just
728 when reusing an existing buffer.
731 *) New command line and configuration option 'utf8' for the req command.
732 This allows field values to be specified as UTF8 strings.
735 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
736 runs for the former and machine-readable output for the latter.
739 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
740 of the e-mail address in the DN (i.e., it will go into a certificate
741 extension only). The new configuration file option 'email_in_dn = no'
743 [Massimiliano Pala madwolf@openca.org]
745 *) Change all functions with names starting with des_ to be starting
746 with DES_ instead. Add wrappers that are compatible with libdes,
747 but are named _ossl_old_des_*. Finally, add macros that map the
748 des_* symbols to the corresponding _ossl_old_des_* if libdes
749 compatibility is desired. If OpenSSL 0.9.6c compatibility is
750 desired, the des_* symbols will be mapped to DES_*, with one
753 Since we provide two compatibility mappings, the user needs to
754 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
755 compatibility is desired. The default (i.e., when that macro
756 isn't defined) is OpenSSL 0.9.6c compatibility.
758 There are also macros that enable and disable the support of old
759 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
760 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
761 are defined, the default will apply: to support the old des routines.
763 In either case, one must include openssl/des.h to get the correct
764 definitions. Do not try to just include openssl/des_old.h, that
767 NOTE: This is a major break of an old API into a new one. Software
768 authors are encouraged to switch to the DES_ style functions. Some
769 time in the future, des_old.h and the libdes compatibility functions
770 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
771 default), and then completely removed.
774 *) Test for certificates which contain unsupported critical extensions.
775 If such a certificate is found during a verify operation it is
776 rejected by default: this behaviour can be overridden by either
777 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
778 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
779 X509_supported_extension() has also been added which returns 1 if a
780 particular extension is supported.
783 *) Modify the behaviour of EVP cipher functions in similar way to digests
784 to retain compatibility with existing code.
787 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
788 compatibility with existing code. In particular the 'ctx' parameter does
789 not have to be to be initialized before the call to EVP_DigestInit() and
790 it is tidied up after a call to EVP_DigestFinal(). New function
791 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
792 EVP_MD_CTX_copy() changed to not require the destination to be
793 initialized valid and new function EVP_MD_CTX_copy_ex() added which
794 requires the destination to be valid.
796 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
797 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
800 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
801 so that complete 'Handshake' protocol structures are kept in memory
802 instead of overwriting 'msg_type' and 'length' with 'body' data.
805 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
806 [Massimo Santin via Richard Levitte]
808 *) Major restructuring to the underlying ENGINE code. This includes
809 reduction of linker bloat, separation of pure "ENGINE" manipulation
810 (initialisation, etc) from functionality dealing with implementations
811 of specific crypto iterfaces. This change also introduces integrated
812 support for symmetric ciphers and digest implementations - so ENGINEs
813 can now accelerate these by providing EVP_CIPHER and EVP_MD
814 implementations of their own. This is detailed in crypto/engine/README
815 as it couldn't be adequately described here. However, there are a few
816 API changes worth noting - some RSA, DSA, DH, and RAND functions that
817 were changed in the original introduction of ENGINE code have now
818 reverted back - the hooking from this code to ENGINE is now a good
819 deal more passive and at run-time, operations deal directly with
820 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
821 dereferencing through an ENGINE pointer any more. Also, the ENGINE
822 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
823 they were not being used by the framework as there is no concept of a
824 BIGNUM_METHOD and they could not be generalised to the new
825 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
826 ENGINE_cpy() has been removed as it cannot be consistently defined in
830 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
833 *) Change mkdef.pl to sort symbols that get the same entry number,
834 and make sure the automatically generated functions ERR_load_*
835 become part of libeay.num as well.
838 *) New function SSL_renegotiate_pending(). This returns true once
839 renegotiation has been requested (either SSL_renegotiate() call
840 or HelloRequest/ClientHello receveived from the peer) and becomes
841 false once a handshake has been completed.
842 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
843 sends a HelloRequest, but does not ensure that a handshake takes
844 place. SSL_renegotiate_pending() is useful for checking if the
845 client has followed the request.)
848 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
849 By default, clients may request session resumption even during
850 renegotiation (if session ID contexts permit); with this option,
851 session resumption is possible only in the first handshake.
853 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
854 more bits available for options that should not be part of
855 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
858 *) Add some demos for certificate and certificate request creation.
861 *) Make maximum certificate chain size accepted from the peer application
862 settable (SSL*_get/set_max_cert_list()), as proposed by
863 "Douglas E. Engert" <deengert@anl.gov>.
866 *) Add support for shared libraries for Unixware-7
867 (Boyd Lynn Gerber <gerberb@zenez.com>).
870 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
871 be done prior to destruction. Use this to unload error strings from
872 ENGINEs that load their own error strings. NB: This adds two new API
873 functions to "get" and "set" this destroy handler in an ENGINE.
876 *) Alter all existing ENGINE implementations (except "openssl" and
877 "openbsd") to dynamically instantiate their own error strings. This
878 makes them more flexible to be built both as statically-linked ENGINEs
879 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
880 Also, add stub code to each that makes building them as self-contained
881 shared-libraries easier (see README.ENGINE).
884 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
885 implementations into applications that are completely implemented in
886 self-contained shared-libraries. The "dynamic" ENGINE exposes control
887 commands that can be used to configure what shared-library to load and
888 to control aspects of the way it is handled. Also, made an update to
889 the README.ENGINE file that brings its information up-to-date and
890 provides some information and instructions on the "dynamic" ENGINE
891 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
894 *) Make it possible to unload ranges of ERR strings with a new
895 "ERR_unload_strings" function.
898 *) Add a copy() function to EVP_MD.
901 *) Make EVP_MD routines take a context pointer instead of just the
902 md_data void pointer.
905 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
906 that the digest can only process a single chunk of data
907 (typically because it is provided by a piece of
908 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
909 is only going to provide a single chunk of data, and hence the
910 framework needn't accumulate the data for oneshot drivers.
913 *) As with "ERR", make it possible to replace the underlying "ex_data"
914 functions. This change also alters the storage and management of global
915 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
916 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
917 index counters. The API functions that use this state have been changed
918 to take a "class_index" rather than pointers to the class's local STACK
919 and counter, and there is now an API function to dynamically create new
920 classes. This centralisation allows us to (a) plug a lot of the
921 thread-safety problems that existed, and (b) makes it possible to clean
922 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
923 such data would previously have always leaked in application code and
924 workarounds were in place to make the memory debugging turn a blind eye
925 to it. Application code that doesn't use this new function will still
926 leak as before, but their memory debugging output will announce it now
927 rather than letting it slide.
929 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
930 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
931 has a return value to indicate success or failure.
934 *) Make it possible to replace the underlying "ERR" functions such that the
935 global state (2 LHASH tables and 2 locks) is only used by the "default"
936 implementation. This change also adds two functions to "get" and "set"
937 the implementation prior to it being automatically set the first time
938 any other ERR function takes place. Ie. an application can call "get",
939 pass the return value to a module it has just loaded, and that module
940 can call its own "set" function using that value. This means the
941 module's "ERR" operations will use (and modify) the error state in the
942 application and not in its own statically linked copy of OpenSSL code.
945 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
946 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
947 the operation, and provides a more encapsulated way for external code
948 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
949 to use these functions rather than manually incrementing the counts.
951 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
954 *) Add EVP test program.
957 *) Add symmetric cipher support to ENGINE. Expect the API to change!
960 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
961 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
962 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
963 These allow a CRL to be built without having to access X509_CRL fields
964 directly. Modify 'ca' application to use new functions.
967 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
968 bug workarounds. Rollback attack detection is a security feature.
969 The problem will only arise on OpenSSL servers when TLSv1 is not
970 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
971 Software authors not wanting to support TLSv1 will have special reasons
972 for their choice and can explicitly enable this option.
973 [Bodo Moeller, Lutz Jaenicke]
975 *) Rationalise EVP so it can be extended: don't include a union of
976 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
977 (similar to those existing for EVP_CIPHER_CTX).
982 EVP_MD_CTX_init(&md); /* new function call */
983 EVP_DigestInit(&md, EVP_sha1());
984 EVP_DigestUpdate(&md, in, len);
985 EVP_DigestFinal(&md, out, NULL);
986 EVP_MD_CTX_cleanup(&md); /* new function call */
990 *) Make DES key schedule conform to the usual scheme, as well as
991 correcting its structure. This means that calls to DES functions
992 now have to pass a pointer to a des_key_schedule instead of a
993 plain des_key_schedule (which was actually always a pointer
998 des_set_key_checked(..., &ks);
999 des_ncbc_encrypt(..., &ks, ...);
1001 (Note that a later change renames 'des_...' into 'DES_...'.)
1004 *) Initial reduction of linker bloat: the use of some functions, such as
1005 PEM causes large amounts of unused functions to be linked in due to
1006 poor organisation. For example pem_all.c contains every PEM function
1007 which has a knock on effect of linking in large amounts of (unused)
1008 ASN1 code. Grouping together similar functions and splitting unrelated
1009 functions prevents this.
1012 *) Cleanup of EVP macros.
1015 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
1016 correct _ecb suffix.
1019 *) Add initial OCSP responder support to ocsp application. The
1020 revocation information is handled using the text based index
1021 use by the ca application. The responder can either handle
1022 requests generated internally, supplied in files (for example
1023 via a CGI script) or using an internal minimal server.
1026 *) Add configuration choices to get zlib compression for TLS.
1029 *) Changes to Kerberos SSL for RFC 2712 compliance:
1030 1. Implemented real KerberosWrapper, instead of just using
1031 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
1032 2. Implemented optional authenticator field of KerberosWrapper.
1034 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
1035 and authenticator structs; see crypto/krb5/.
1037 Generalized Kerberos calls to support multiple Kerberos libraries.
1038 [Vern Staats <staatsvr@asc.hpc.mil>,
1039 Jeffrey Altman <jaltman@columbia.edu>
1040 via Richard Levitte]
1042 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
1043 already does with RSA. testdsa.h now has 'priv_key/pub_key'
1044 values for each of the key sizes rather than having just
1045 parameters (and 'speed' generating keys each time).
1048 *) Speed up EVP routines.
1051 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
1052 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
1053 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
1054 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
1056 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
1057 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
1058 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
1061 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
1063 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
1066 *) Added the OS2-EMX target.
1067 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
1069 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
1070 to support NCONF routines in extension code. New function CONF_set_nconf()
1071 to allow functions which take an NCONF to also handle the old LHASH
1072 structure: this means that the old CONF compatible routines can be
1073 retained (in particular wrt extensions) without having to duplicate the
1074 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
1077 *) Enhance the general user interface with mechanisms for inner control
1078 and with possibilities to have yes/no kind of prompts.
1081 *) Change all calls to low level digest routines in the library and
1082 applications to use EVP. Add missing calls to HMAC_cleanup() and
1083 don't assume HMAC_CTX can be copied using memcpy().
1084 [Verdon Walker <VWalker@novell.com>, Steve Henson]
1086 *) Add the possibility to control engines through control names but with
1087 arbitrary arguments instead of just a string.
1088 Change the key loaders to take a UI_METHOD instead of a callback
1089 function pointer. NOTE: this breaks binary compatibility with earlier
1090 versions of OpenSSL [engine].
1091 Adapt the nCipher code for these new conditions and add a card insertion
1095 *) Enhance the general user interface with mechanisms to better support
1096 dialog box interfaces, application-defined prompts, the possibility
1097 to use defaults (for example default passwords from somewhere else)
1098 and interrupts/cancellations.
1101 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
1102 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
1105 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
1106 tidy up some unnecessarily weird code in 'sk_new()').
1107 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
1109 *) Change the key loading routines for ENGINEs to use the same kind
1110 callback (pem_password_cb) as all other routines that need this
1114 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
1115 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
1116 than this minimum value is recommended.
1119 *) New random seeder for OpenVMS, using the system process statistics
1120 that are easily reachable.
1123 *) Windows apparently can't transparently handle global
1124 variables defined in DLLs. Initialisations such as:
1126 const ASN1_ITEM *it = &ASN1_INTEGER_it;
1128 wont compile. This is used by the any applications that need to
1129 declare their own ASN1 modules. This was fixed by adding the option
1130 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
1131 needed for static libraries under Win32.
1134 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
1135 setting of purpose and trust fields. New X509_STORE trust and
1136 purpose functions and tidy up setting in other SSL functions.
1139 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
1140 structure. These are inherited by X509_STORE_CTX when it is
1141 initialised. This allows various defaults to be set in the
1142 X509_STORE structure (such as flags for CRL checking and custom
1143 purpose or trust settings) for functions which only use X509_STORE_CTX
1144 internally such as S/MIME.
1146 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
1147 trust settings if they are not set in X509_STORE. This allows X509_STORE
1148 purposes and trust (in S/MIME for example) to override any set by default.
1150 Add command line options for CRL checking to smime, s_client and s_server
1154 *) Initial CRL based revocation checking. If the CRL checking flag(s)
1155 are set then the CRL is looked up in the X509_STORE structure and
1156 its validity and signature checked, then if the certificate is found
1157 in the CRL the verify fails with a revoked error.
1159 Various new CRL related callbacks added to X509_STORE_CTX structure.
1161 Command line options added to 'verify' application to support this.
1163 This needs some additional work, such as being able to handle multiple
1164 CRLs with different times, extension based lookup (rather than just
1165 by subject name) and ultimately more complete V2 CRL extension
1169 *) Add a general user interface API (crypto/ui/). This is designed
1170 to replace things like des_read_password and friends (backward
1171 compatibility functions using this new API are provided).
1172 The purpose is to remove prompting functions from the DES code
1173 section as well as provide for prompting through dialog boxes in
1174 a window system and the like.
1177 *) Add "ex_data" support to ENGINE so implementations can add state at a
1178 per-structure level rather than having to store it globally.
1181 *) Make it possible for ENGINE structures to be copied when retrieved by
1182 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
1183 This causes the "original" ENGINE structure to act like a template,
1184 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
1185 operational state can be localised to each ENGINE structure, despite the
1186 fact they all share the same "methods". New ENGINE structures returned in
1187 this case have no functional references and the return value is the single
1188 structural reference. This matches the single structural reference returned
1189 by ENGINE_by_id() normally, when it is incremented on the pre-existing
1193 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
1194 needs to match any other type at all we need to manually clear the
1198 *) Changes to the "openssl engine" utility to include;
1199 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
1200 about an ENGINE's available control commands.
1201 - executing control commands from command line arguments using the
1202 '-pre' and '-post' switches. '-post' is only used if '-t' is
1203 specified and the ENGINE is successfully initialised. The syntax for
1204 the individual commands are colon-separated, for example;
1205 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
1208 *) New dynamic control command support for ENGINEs. ENGINEs can now
1209 declare their own commands (numbers), names (strings), descriptions,
1210 and input types for run-time discovery by calling applications. A
1211 subset of these commands are implicitly classed as "executable"
1212 depending on their input type, and only these can be invoked through
1213 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
1214 can be based on user input, config files, etc). The distinction is
1215 that "executable" commands cannot return anything other than a boolean
1216 result and can only support numeric or string input, whereas some
1217 discoverable commands may only be for direct use through
1218 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
1219 pointers, or other custom uses. The "executable" commands are to
1220 support parameterisations of ENGINE behaviour that can be
1221 unambiguously defined by ENGINEs and used consistently across any
1222 OpenSSL-based application. Commands have been added to all the
1223 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
1224 control over shared-library paths without source code alterations.
1227 *) Changed all ENGINE implementations to dynamically allocate their
1228 ENGINEs rather than declaring them statically. Apart from this being
1229 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
1230 this also allows the implementations to compile without using the
1231 internal engine_int.h header.
1234 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
1235 'const' value. Any code that should be able to modify a RAND_METHOD
1236 should already have non-const pointers to it (ie. they should only
1237 modify their own ones).
1240 *) Made a variety of little tweaks to the ENGINE code.
1241 - "atalla" and "ubsec" string definitions were moved from header files
1242 to C code. "nuron" string definitions were placed in variables
1243 rather than hard-coded - allowing parameterisation of these values
1244 later on via ctrl() commands.
1245 - Removed unused "#if 0"'d code.
1246 - Fixed engine list iteration code so it uses ENGINE_free() to release
1247 structural references.
1248 - Constified the RAND_METHOD element of ENGINE structures.
1249 - Constified various get/set functions as appropriate and added
1250 missing functions (including a catch-all ENGINE_cpy that duplicates
1251 all ENGINE values onto a new ENGINE except reference counts/state).
1252 - Removed NULL parameter checks in get/set functions. Setting a method
1253 or function to NULL is a way of cancelling out a previously set
1254 value. Passing a NULL ENGINE parameter is just plain stupid anyway
1255 and doesn't justify the extra error symbols and code.
1256 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
1257 flags from engine_int.h to engine.h.
1258 - Changed prototypes for ENGINE handler functions (init(), finish(),
1259 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
1262 *) Implement binary inversion algorithm for BN_mod_inverse in addition
1263 to the algorithm using long division. The binary algorithm can be
1264 used only if the modulus is odd. On 32-bit systems, it is faster
1265 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
1266 roughly 5-15% for 256-bit moduli), so we use it only for moduli
1267 up to 450 bits. In 64-bit environments, the binary algorithm
1268 appears to be advantageous for much longer moduli; here we use it
1269 for moduli up to 2048 bits.
1272 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
1273 could not support the combine flag in choice fields.
1276 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
1277 extensions from a certificate request to the certificate.
1280 *) Allow multiple 'certopt' and 'nameopt' options to be separated
1281 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
1282 file: this allows the display of the certificate about to be
1283 signed to be customised, to allow certain fields to be included
1284 or excluded and extension details. The old system didn't display
1285 multicharacter strings properly, omitted fields not in the policy
1286 and couldn't display additional details such as extensions.
1289 *) Function EC_POINTs_mul for multiple scalar multiplication
1290 of an arbitrary number of elliptic curve points
1291 \sum scalars[i]*points[i],
1292 optionally including the generator defined for the EC_GROUP:
1293 scalar*generator + \sum scalars[i]*points[i].
1295 EC_POINT_mul is a simple wrapper function for the typical case
1296 that the point list has just one item (besides the optional
1300 *) First EC_METHODs for curves over GF(p):
1302 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
1303 operations and provides various method functions that can also
1304 operate with faster implementations of modular arithmetic.
1306 EC_GFp_mont_method() reuses most functions that are part of
1307 EC_GFp_simple_method, but uses Montgomery arithmetic.
1309 [Bodo Moeller; point addition and point doubling
1310 implementation directly derived from source code provided by
1311 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
1313 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
1314 crypto/ec/ec_lib.c):
1316 Curves are EC_GROUP objects (with an optional group generator)
1317 based on EC_METHODs that are built into the library.
1319 Points are EC_POINT objects based on EC_GROUP objects.
1321 Most of the framework would be able to handle curves over arbitrary
1322 finite fields, but as there are no obvious types for fields other
1323 than GF(p), some functions are limited to that for now.
1326 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
1327 that the file contains a complete HTTP response.
1330 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
1331 change the def and num file printf format specifier from "%-40sXXX"
1332 to "%-39s XXX". The latter will always guarantee a space after the
1333 field while the former will cause them to run together if the field
1334 is 40 of more characters long.
1337 *) Constify the cipher and digest 'method' functions and structures
1338 and modify related functions to take constant EVP_MD and EVP_CIPHER
1342 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
1343 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
1346 *) Modify EVP_Digest*() routines so they now return values. Although the
1347 internal software routines can never fail additional hardware versions
1351 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
1353 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
1354 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
1357 ERR_R_NESTED_ASN1_ERROR
1359 ERR_R_MISSING_ASN1_EOS
1360 were 4 .. 9, conflicting with
1361 ERR_LIB_RSA (= ERR_R_RSA_LIB)
1363 ERR_LIB_PEM (= ERR_R_PEM_LIB).
1364 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
1366 Add new error code 'ERR_R_INTERNAL_ERROR'.
1369 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
1373 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
1374 sets the subject name for a new request or supersedes the
1375 subject name in a given request. Formats that can be parsed are
1376 'CN=Some Name, OU=myOU, C=IT'
1378 'CN=Some Name/OU=myOU/C=IT'.
1380 Add options '-batch' and '-verbose' to 'openssl req'.
1381 [Massimiliano Pala <madwolf@hackmasters.net>]
1383 *) Introduce the possibility to access global variables through
1384 functions on platform were that's the best way to handle exporting
1385 global variables in shared libraries. To enable this functionality,
1386 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
1387 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
1388 is normally done by Configure or something similar).
1390 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
1391 in the source file (foo.c) like this:
1393 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
1394 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
1396 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
1397 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
1399 OPENSSL_DECLARE_GLOBAL(int,foo);
1400 #define foo OPENSSL_GLOBAL_REF(foo)
1401 OPENSSL_DECLARE_GLOBAL(double,bar);
1402 #define bar OPENSSL_GLOBAL_REF(bar)
1404 The #defines are very important, and therefore so is including the
1405 header file everywhere where the defined globals are used.
1407 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
1408 of ASN.1 items, but that structure is a bit different.
1410 The largest change is in util/mkdef.pl which has been enhanced with
1411 better and easier to understand logic to choose which symbols should
1412 go into the Windows .def files as well as a number of fixes and code
1413 cleanup (among others, algorithm keywords are now sorted
1414 lexicographically to avoid constant rewrites).
1417 *) In BN_div() keep a copy of the sign of 'num' before writing the
1418 result to 'rm' because if rm==num the value will be overwritten
1419 and produce the wrong result if 'num' is negative: this caused
1420 problems with BN_mod() and BN_nnmod().
1423 *) Function OCSP_request_verify(). This checks the signature on an
1424 OCSP request and verifies the signer certificate. The signer
1425 certificate is just checked for a generic purpose and OCSP request
1429 *) Add OCSP_check_validity() function to check the validity of OCSP
1430 responses. OCSP responses are prepared in real time and may only
1431 be a few seconds old. Simply checking that the current time lies
1432 between thisUpdate and nextUpdate max reject otherwise valid responses
1433 caused by either OCSP responder or client clock inaccuracy. Instead
1434 we allow thisUpdate and nextUpdate to fall within a certain period of
1435 the current time. The age of the response can also optionally be
1436 checked. Two new options -validity_period and -status_age added to
1440 *) If signature or public key algorithm is unrecognized print out its
1441 OID rather that just UNKNOWN.
1444 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
1445 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
1446 ID to be generated from the issuer certificate alone which can then be
1447 passed to OCSP_id_issuer_cmp().
1450 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
1451 ASN1 modules to export functions returning ASN1_ITEM pointers
1452 instead of the ASN1_ITEM structures themselves. This adds several
1453 new macros which allow the underlying ASN1 function/structure to
1454 be accessed transparently. As a result code should not use ASN1_ITEM
1455 references directly (such as &X509_it) but instead use the relevant
1456 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
1457 use of the new ASN1 code on platforms where exporting structures
1458 is problematical (for example in shared libraries) but exporting
1459 functions returning pointers to structures is not.
1462 *) Add support for overriding the generation of SSL/TLS session IDs.
1463 These callbacks can be registered either in an SSL_CTX or per SSL.
1464 The purpose of this is to allow applications to control, if they wish,
1465 the arbitrary values chosen for use as session IDs, particularly as it
1466 can be useful for session caching in multiple-server environments. A
1467 command-line switch for testing this (and any client code that wishes
1468 to use such a feature) has been added to "s_server".
1469 [Geoff Thorpe, Lutz Jaenicke]
1471 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
1472 of the form '#if defined(...) || defined(...) || ...' and
1473 '#if !defined(...) && !defined(...) && ...'. This also avoids
1474 the growing number of special cases it was previously handling.
1477 *) Make all configuration macros available for application by making
1478 sure they are available in opensslconf.h, by giving them names starting
1479 with "OPENSSL_" to avoid conflicts with other packages and by making
1480 sure e_os2.h will cover all platform-specific cases together with
1482 Additionally, it is now possible to define configuration/platform-
1483 specific names (called "system identities"). In the C code, these
1484 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
1485 macro with the name beginning with "OPENSSL_SYS_", which is determined
1486 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
1490 *) New option -set_serial to 'req' and 'x509' this allows the serial
1491 number to use to be specified on the command line. Previously self
1492 signed certificates were hard coded with serial number 0 and the
1493 CA options of 'x509' had to use a serial number in a file which was
1497 *) New options to 'ca' utility to support V2 CRL entry extensions.
1498 Currently CRL reason, invalidity date and hold instruction are
1499 supported. Add new CRL extensions to V3 code and some new objects.
1502 *) New function EVP_CIPHER_CTX_set_padding() this is used to
1503 disable standard block padding (aka PKCS#5 padding) in the EVP
1504 API, which was previously mandatory. This means that the data is
1505 not padded in any way and so the total length much be a multiple
1506 of the block size, otherwise an error occurs.
1509 *) Initial (incomplete) OCSP SSL support.
1512 *) New function OCSP_parse_url(). This splits up a URL into its host,
1513 port and path components: primarily to parse OCSP URLs. New -url
1514 option to ocsp utility.
1517 *) New nonce behavior. The return value of OCSP_check_nonce() now
1518 reflects the various checks performed. Applications can decide
1519 whether to tolerate certain situations such as an absent nonce
1520 in a response when one was present in a request: the ocsp application
1521 just prints out a warning. New function OCSP_add1_basic_nonce()
1522 this is to allow responders to include a nonce in a response even if
1523 the request is nonce-less.
1526 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
1527 skipped when using openssl x509 multiple times on a single input file,
1528 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
1531 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
1532 set string type: to handle setting ASN1_TIME structures. Fix ca
1533 utility to correctly initialize revocation date of CRLs.
1536 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
1537 the clients preferred ciphersuites and rather use its own preferences.
1538 Should help to work around M$ SGC (Server Gated Cryptography) bug in
1539 Internet Explorer by ensuring unchanged hash method during stepup.
1540 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
1543 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
1544 to aes and add a new 'exist' option to print out symbols that don't
1548 *) Additional options to ocsp utility to allow flags to be set and
1549 additional certificates supplied.
1552 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
1553 OCSP client a number of certificate to only verify the response
1557 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
1558 handle the new API. Currently only ECB, CBC modes supported. Add new
1561 Add TLS AES ciphersuites as described in RFC3268, "Advanced
1562 Encryption Standard (AES) Ciphersuites for Transport Layer
1563 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
1564 not enabled by default and were not part of the "ALL" ciphersuite
1565 alias because they were not yet official; they could be
1566 explicitly requested by specifying the "AESdraft" ciphersuite
1567 group alias. In the final release of OpenSSL 0.9.7, the group
1568 alias is called "AES" and is part of "ALL".)
1569 [Ben Laurie, Steve Henson, Bodo Moeller]
1571 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
1572 request to response.
1575 *) Functions for OCSP responders. OCSP_request_onereq_count(),
1576 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
1577 extract information from a certificate request. OCSP_response_create()
1578 creates a response and optionally adds a basic response structure.
1579 OCSP_basic_add1_status() adds a complete single response to a basic
1580 response and returns the OCSP_SINGLERESP structure just added (to allow
1581 extensions to be included for example). OCSP_basic_add1_cert() adds a
1582 certificate to a basic response and OCSP_basic_sign() signs a basic
1583 response with various flags. New helper functions ASN1_TIME_check()
1584 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
1585 (converts ASN1_TIME to GeneralizedTime).
1588 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
1589 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
1590 structure from a certificate. X509_pubkey_digest() digests the public_key
1591 contents: this is used in various key identifiers.
1594 *) Make sk_sort() tolerate a NULL argument.
1595 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
1597 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
1598 passed by the function are trusted implicitly. If any of them signed the
1599 response then it is assumed to be valid and is not verified.
1602 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
1603 to data. This was previously part of the PKCS7 ASN1 code. This
1604 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
1605 [Steve Henson, reported by Kenneth R. Robinette
1606 <support@securenetterm.com>]
1608 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
1609 routines: without these tracing memory leaks is very painful.
1610 Fix leaks in PKCS12 and PKCS7 routines.
1613 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
1614 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
1615 effectively meant GeneralizedTime would never be used. Now it
1616 is initialised to -1 but X509_time_adj() now has to check the value
1617 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
1618 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
1619 [Steve Henson, reported by Kenneth R. Robinette
1620 <support@securenetterm.com>]
1622 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
1623 result in a zero length in the ASN1_INTEGER structure which was
1624 not consistent with the structure when d2i_ASN1_INTEGER() was used
1625 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
1626 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
1627 where it did not print out a minus for negative ASN1_INTEGER.
1630 *) Add summary printout to ocsp utility. The various functions which
1631 convert status values to strings have been renamed to:
1632 OCSP_response_status_str(), OCSP_cert_status_str() and
1633 OCSP_crl_reason_str() and are no longer static. New options
1634 to verify nonce values and to disable verification. OCSP response
1635 printout format cleaned up.
1638 *) Add additional OCSP certificate checks. These are those specified
1639 in RFC2560. This consists of two separate checks: the CA of the
1640 certificate being checked must either be the OCSP signer certificate
1641 or the issuer of the OCSP signer certificate. In the latter case the
1642 OCSP signer certificate must contain the OCSP signing extended key
1643 usage. This check is performed by attempting to match the OCSP
1644 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
1645 in the OCSP_CERTID structures of the response.
1648 *) Initial OCSP certificate verification added to OCSP_basic_verify()
1649 and related routines. This uses the standard OpenSSL certificate
1650 verify routines to perform initial checks (just CA validity) and
1651 to obtain the certificate chain. Then additional checks will be
1652 performed on the chain. Currently the root CA is checked to see
1653 if it is explicitly trusted for OCSP signing. This is used to set
1654 a root CA as a global signing root: that is any certificate that
1655 chains to that CA is an acceptable OCSP signing certificate.
1658 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
1659 extensions from a separate configuration file.
1660 As when reading extensions from the main configuration file,
1661 the '-extensions ...' option may be used for specifying the
1663 [Massimiliano Pala <madwolf@comune.modena.it>]
1665 *) New OCSP utility. Allows OCSP requests to be generated or
1666 read. The request can be sent to a responder and the output
1667 parsed, outputed or printed in text form. Not complete yet:
1668 still needs to check the OCSP response validity.
1671 *) New subcommands for 'openssl ca':
1672 'openssl ca -status <serial>' prints the status of the cert with
1673 the given serial number (according to the index file).
1674 'openssl ca -updatedb' updates the expiry status of certificates
1676 [Massimiliano Pala <madwolf@comune.modena.it>]
1678 *) New '-newreq-nodes' command option to CA.pl. This is like
1679 '-newreq', but calls 'openssl req' with the '-nodes' option
1680 so that the resulting key is not encrypted.
1681 [Damien Miller <djm@mindrot.org>]
1683 *) New configuration for the GNU Hurd.
1684 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
1686 *) Initial code to implement OCSP basic response verify. This
1687 is currently incomplete. Currently just finds the signer's
1688 certificate and verifies the signature on the response.
1691 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
1692 value of OPENSSLDIR. This is available via the new '-d' option
1693 to 'openssl version', and is also included in 'openssl version -a'.
1696 *) Allowing defining memory allocation callbacks that will be given
1697 file name and line number information in additional arguments
1698 (a const char* and an int). The basic functionality remains, as
1699 well as the original possibility to just replace malloc(),
1700 realloc() and free() by functions that do not know about these
1701 additional arguments. To register and find out the current
1702 settings for extended allocation functions, the following
1703 functions are provided:
1705 CRYPTO_set_mem_ex_functions
1706 CRYPTO_set_locked_mem_ex_functions
1707 CRYPTO_get_mem_ex_functions
1708 CRYPTO_get_locked_mem_ex_functions
1710 These work the same way as CRYPTO_set_mem_functions and friends.
1711 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
1712 extended allocation function is enabled.
1713 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
1714 a conventional allocation function is enabled.
1715 [Richard Levitte, Bodo Moeller]
1717 *) Finish off removing the remaining LHASH function pointer casts.
1718 There should no longer be any prototype-casting required when using
1719 the LHASH abstraction, and any casts that remain are "bugs". See
1720 the callback types and macros at the head of lhash.h for details
1721 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
1724 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
1725 If /dev/[u]random devices are not available or do not return enough
1726 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
1728 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
1729 /etc/entropy will be queried once each in this sequence, quering stops
1730 when enough entropy was collected without querying more sockets.
1733 *) Change the Unix RAND_poll() variant to be able to poll several
1734 random devices, as specified by DEVRANDOM, until a sufficient amount
1735 of data has been collected. We spend at most 10 ms on each file
1736 (select timeout) and read in non-blocking mode. DEVRANDOM now
1737 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
1738 (previously it was just the string "/dev/urandom"), so on typical
1739 platforms the 10 ms delay will never occur.
1740 Also separate out the Unix variant to its own file, rand_unix.c.
1741 For VMS, there's a currently-empty rand_vms.c.
1744 *) Move OCSP client related routines to ocsp_cl.c. These
1745 provide utility functions which an application needing
1746 to issue a request to an OCSP responder and analyse the
1747 response will typically need: as opposed to those which an
1748 OCSP responder itself would need which will be added later.
1750 OCSP_request_sign() signs an OCSP request with an API similar
1751 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
1752 response. OCSP_response_get1_basic() extracts basic response
1753 from response. OCSP_resp_find_status(): finds and extracts status
1754 information from an OCSP_CERTID structure (which will be created
1755 when the request structure is built). These are built from lower
1756 level functions which work on OCSP_SINGLERESP structures but
1757 wont normally be used unless the application wishes to examine
1758 extensions in the OCSP response for example.
1760 Replace nonce routines with a pair of functions.
1761 OCSP_request_add1_nonce() adds a nonce value and optionally
1762 generates a random value. OCSP_check_nonce() checks the
1763 validity of the nonce in an OCSP response.
1766 *) Change function OCSP_request_add() to OCSP_request_add0_id().
1767 This doesn't copy the supplied OCSP_CERTID and avoids the
1768 need to free up the newly created id. Change return type
1769 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
1770 This can then be used to add extensions to the request.
1771 Deleted OCSP_request_new(), since most of its functionality
1772 is now in OCSP_REQUEST_new() (and the case insensitive name
1773 clash) apart from the ability to set the request name which
1774 will be added elsewhere.
1777 *) Update OCSP API. Remove obsolete extensions argument from
1778 various functions. Extensions are now handled using the new
1779 OCSP extension code. New simple OCSP HTTP function which
1780 can be used to send requests and parse the response.
1783 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
1784 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
1785 uses the special reorder version of SET OF to sort the attributes
1786 and reorder them to match the encoded order. This resolves a long
1787 standing problem: a verify on a PKCS7 structure just after signing
1788 it used to fail because the attribute order did not match the
1789 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
1790 it uses the received order. This is necessary to tolerate some broken
1791 software that does not order SET OF. This is handled by encoding
1792 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
1793 to produce the required SET OF.
1796 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
1797 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
1798 files to get correct declarations of the ASN.1 item variables.
1801 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
1802 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
1803 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
1804 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
1805 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
1806 ASN1_ITEM and no wrapper functions.
1809 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
1810 replace the old function pointer based I/O routines. Change most of
1811 the *_d2i_bio() and *_d2i_fp() functions to use these.
1814 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
1815 lines, recognice more "algorithms" that can be deselected, and make
1816 it complain about algorithm deselection that isn't recognised.
1819 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
1820 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
1821 to use new functions. Add NO_ASN1_OLD which can be set to remove
1822 some old style ASN1 functions: this can be used to determine if old
1823 code will still work when these eventually go away.
1826 *) New extension functions for OCSP structures, these follow the
1827 same conventions as certificates and CRLs.
1830 *) New function X509V3_add1_i2d(). This automatically encodes and
1831 adds an extension. Its behaviour can be customised with various
1832 flags to append, replace or delete. Various wrappers added for
1833 certifcates and CRLs.
1836 *) Fix to avoid calling the underlying ASN1 print routine when
1837 an extension cannot be parsed. Correct a typo in the
1838 OCSP_SERVICELOC extension. Tidy up print OCSP format.
1841 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
1842 entries for variables.
1845 *) Add functionality to apps/openssl.c for detecting locking
1846 problems: As the program is single-threaded, all we have
1847 to do is register a locking callback using an array for
1848 storing which locks are currently held by the program.
1851 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
1852 SSL_get_ex_data_X509_STORE_idx(), which is used in
1853 ssl_verify_cert_chain() and thus can be called at any time
1854 during TLS/SSL handshakes so that thread-safety is essential.
1855 Unfortunately, the ex_data design is not at all suited
1856 for multi-threaded use, so it probably should be abolished.
1859 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
1860 [Broadcom, tweaked and integrated by Geoff Thorpe]
1862 *) Move common extension printing code to new function
1863 X509V3_print_extensions(). Reorganise OCSP print routines and
1864 implement some needed OCSP ASN1 functions. Add OCSP extensions.
1867 *) New function X509_signature_print() to remove duplication in some
1871 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
1872 set (this was treated exactly the same as SET OF previously). This
1873 is used to reorder the STACK representing the structure to match the
1874 encoding. This will be used to get round a problem where a PKCS7
1875 structure which was signed could not be verified because the STACK
1876 order did not reflect the encoded order.
1879 *) Reimplement the OCSP ASN1 module using the new code.
1882 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
1883 for its ASN1 operations. The old style function pointers still exist
1884 for now but they will eventually go away.
1887 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
1888 completely replaces the old ASN1 functionality with a table driven
1889 encoder and decoder which interprets an ASN1_ITEM structure describing
1890 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
1891 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
1892 has also been converted to the new form.
1895 *) Change BN_mod_exp_recp so that negative moduli are tolerated
1896 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
1897 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
1898 for negative moduli.
1901 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
1902 of not touching the result's sign bit.
1905 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
1909 *) Changed the LHASH code to use prototypes for callbacks, and created
1910 macros to declare and implement thin (optionally static) functions
1911 that provide type-safety and avoid function pointer casting for the
1912 type-specific callbacks.
1915 *) Added Kerberos Cipher Suites to be used with TLS, as written in
1917 [Veers Staats <staatsvr@asc.hpc.mil>,
1918 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
1920 *) Reformat the FAQ so the different questions and answers can be divided
1921 in sections depending on the subject.
1924 *) Have the zlib compression code load ZLIB.DLL dynamically under
1928 *) New function BN_mod_sqrt for computing square roots modulo a prime
1929 (using the probabilistic Tonelli-Shanks algorithm unless
1930 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
1931 be handled deterministically).
1932 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
1934 *) Make BN_mod_inverse faster by explicitly handling small quotients
1935 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
1936 512 bits], about 30% for larger ones [1024 or 2048 bits].)
1939 *) New function BN_kronecker.
1942 *) Fix BN_gcd so that it works on negative inputs; the result is
1943 positive unless both parameters are zero.
1944 Previously something reasonably close to an infinite loop was
1945 possible because numbers could be growing instead of shrinking
1946 in the implementation of Euclid's algorithm.
1949 *) Fix BN_is_word() and BN_is_one() macros to take into account the
1950 sign of the number in question.
1952 Fix BN_is_word(a,w) to work correctly for w == 0.
1954 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
1955 because its test if the absolute value of 'a' equals 'w'.
1956 Note that BN_abs_is_word does *not* handle w == 0 reliably;
1957 it exists mostly for use in the implementations of BN_is_zero(),
1958 BN_is_one(), and BN_is_word().
1961 *) New function BN_swap.
1964 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
1965 the exponentiation functions are more likely to produce reasonable
1966 results on negative inputs.
1969 *) Change BN_mod_mul so that the result is always non-negative.
1970 Previously, it could be negative if one of the factors was negative;
1971 I don't think anyone really wanted that behaviour.
1974 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
1975 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
1976 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
1977 and add new functions:
1986 BN_mod_lshift1_quick
1990 These functions always generate non-negative results.
1992 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
1993 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
1995 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
1996 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
1997 be reduced modulo m.
1998 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
2000 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2001 was actually never needed) and in BN_mul(). The removal in BN_mul()
2002 required a small change in bn_mul_part_recursive() and the addition
2003 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2004 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2005 bn_sub_words() and bn_add_words() except they take arrays with
2009 *) In 'openssl passwd', verify passwords read from the terminal
2010 unless the '-salt' option is used (which usually means that
2011 verification would just waste user's time since the resulting
2012 hash is going to be compared with some given password hash)
2013 or the new '-noverify' option is used.
2015 This is an incompatible change, but it does not affect
2016 non-interactive use of 'openssl passwd' (passwords on the command
2017 line, '-stdin' option, '-in ...' option) and thus should not
2021 *) Remove all references to RSAref, since there's no more need for it.
2024 *) Make DSO load along a path given through an environment variable
2025 (SHLIB_PATH) with shl_load().
2028 *) Constify the ENGINE code as a result of BIGNUM constification.
2029 Also constify the RSA code and most things related to it. In a
2030 few places, most notable in the depth of the ASN.1 code, ugly
2031 casts back to non-const were required (to be solved at a later
2035 *) Make it so the openssl application has all engines loaded by default.
2038 *) Constify the BIGNUM routines a little more.
2041 *) Add the following functions:
2043 ENGINE_load_cswift()
2045 ENGINE_load_atalla()
2047 ENGINE_load_builtin_engines()
2049 That way, an application can itself choose if external engines that
2050 are built-in in OpenSSL shall ever be used or not. The benefit is
2051 that applications won't have to be linked with libdl or other dso
2052 libraries unless it's really needed.
2054 Changed 'openssl engine' to load all engines on demand.
2055 Changed the engine header files to avoid the duplication of some
2056 declarations (they differed!).
2059 *) 'openssl engine' can now list capabilities.
2062 *) Better error reporting in 'openssl engine'.
2065 *) Never call load_dh_param(NULL) in s_server.
2068 *) Add engine application. It can currently list engines by name and
2069 identity, and test if they are actually available.
2072 *) Improve RPM specification file by forcing symbolic linking and making
2073 sure the installed documentation is also owned by root.root.
2074 [Damien Miller <djm@mindrot.org>]
2076 *) Give the OpenSSL applications more possibilities to make use of
2077 keys (public as well as private) handled by engines.
2080 *) Add OCSP code that comes from CertCo.
2083 *) Add VMS support for the Rijndael code.
2086 *) Added untested support for Nuron crypto accelerator.
2089 *) Add support for external cryptographic devices. This code was
2090 previously distributed separately as the "engine" branch.
2091 [Geoff Thorpe, Richard Levitte]
2093 *) Rework the filename-translation in the DSO code. It is now possible to
2094 have far greater control over how a "name" is turned into a filename
2095 depending on the operating environment and any oddities about the
2096 different shared library filenames on each system.
2099 *) Support threads on FreeBSD-elf in Configure.
2102 *) Fix for SHA1 assembly problem with MASM: it produces
2103 warnings about corrupt line number information when assembling
2104 with debugging information. This is caused by the overlapping
2106 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
2109 NCONF_get_number() has no error checking at all. As a replacement,
2110 NCONF_get_number_e() is defined (_e for "error checking") and is
2111 promoted strongly. The old NCONF_get_number is kept around for
2112 binary backward compatibility.
2113 Make it possible for methods to load from something other than a BIO,
2114 by providing a function pointer that is given a name instead of a BIO.
2115 For example, this could be used to load configuration data from an
2119 *) Fix for non blocking accept BIOs. Added new I/O special reason
2120 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
2121 with non blocking I/O was not possible because no retry code was
2122 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
2126 *) Added the beginnings of Rijndael support.
2129 *) Fix for bug in DirectoryString mask setting. Add support for
2130 X509_NAME_print_ex() in 'req' and X509_print_ex() function
2131 to allow certificate printing to more controllable, additional
2132 'certopt' option to 'x509' to allow new printing options to be
2136 *) Clean old EAY MD5 hack from e_os.h.
2139 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
2141 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
2142 memory from it's contents. This is done with a counter that will
2143 place alternating values in each byte. This can be used to solve
2144 two issues: 1) the removal of calls to memset() by highly optimizing
2145 compilers, and 2) cleansing with other values than 0, since those can
2146 be read through on certain media, for example a swap space on disk.
2149 *) Bugfix: client side session caching did not work with external caching,
2150 because the session->cipher setting was not restored when reloading
2151 from the external cache. This problem was masked, when
2152 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
2153 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
2156 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
2157 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
2158 [Zeev Lieber <zeev-l@yahoo.com>]
2160 *) Undo an undocumented change introduced in 0.9.6e which caused
2161 repeated calls to OpenSSL_add_all_ciphers() and
2162 OpenSSL_add_all_digests() to be ignored, even after calling
2166 *) Change the default configuration reader to deal with last line not
2167 being properly terminated.
2170 *) Change X509_NAME_cmp() so it applies the special rules on handling
2171 DN values that are of type PrintableString, as well as RDNs of type
2172 emailAddress where the value has the type ia5String.
2173 [stefank@valicert.com via Richard Levitte]
2175 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
2176 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
2177 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
2178 the bitwise-OR of the two for use by the majority of applications
2179 wanting this behaviour, and update the docs. The documented
2180 behaviour and actual behaviour were inconsistent and had been
2181 changing anyway, so this is more a bug-fix than a behavioural
2183 [Geoff Thorpe, diagnosed by Nadav Har'El]
2185 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
2186 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
2189 *) Fix initialization code race conditions in
2190 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
2191 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
2192 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
2193 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
2194 ssl2_get_cipher_by_char(),
2195 ssl3_get_cipher_by_char().
2196 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
2198 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
2199 the cached sessions are flushed, as the remove_cb() might use ex_data
2200 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
2201 (see [openssl.org #212]).
2202 [Geoff Thorpe, Lutz Jaenicke]
2204 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
2205 length, instead of the encoding length to d2i_ASN1_OBJECT.
2208 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
2210 *) [In 0.9.6g-engine release:]
2211 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
2212 [Lynn Gazis <lgazis@rainbow.com>]
2214 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
2216 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
2217 and get fix the header length calculation.
2218 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
2219 Alon Kantor <alonk@checkpoint.com> (and others),
2222 *) Use proper error handling instead of 'assertions' in buffer
2223 overflow checks added in 0.9.6e. This prevents DoS (the
2224 assertions could call abort()).
2225 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
2227 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
2229 *) Add various sanity checks to asn1_get_length() to reject
2230 the ASN1 length bytes if they exceed sizeof(long), will appear
2231 negative or the content length exceeds the length of the
2233 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2235 *) Fix cipher selection routines: ciphers without encryption had no flags
2236 for the cipher strength set and where therefore not handled correctly
2237 by the selection routines (PR #130).
2240 *) Fix EVP_dsa_sha macro.
2244 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
2245 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
2246 that was added in OpenSSL 0.9.6d.
2248 As the countermeasure turned out to be incompatible with some
2249 broken SSL implementations, the new option is part of SSL_OP_ALL.
2250 SSL_OP_ALL is usually employed when compatibility with weird SSL
2251 implementations is desired (e.g. '-bugs' option to 's_client' and
2252 's_server'), so the new option is automatically set in many
2256 *) Changes in security patch:
2258 Changes marked "(CHATS)" were sponsored by the Defense Advanced
2259 Research Projects Agency (DARPA) and Air Force Research Laboratory,
2260 Air Force Materiel Command, USAF, under agreement number
2263 *) Add various sanity checks to asn1_get_length() to reject
2264 the ASN1 length bytes if they exceed sizeof(long), will appear
2265 negative or the content length exceeds the length of the
2266 supplied buffer. (CAN-2002-0659)
2267 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
2269 *) Assertions for various potential buffer overflows, not known to
2271 [Ben Laurie (CHATS)]
2273 *) Various temporary buffers to hold ASCII versions of integers were
2274 too small for 64 bit platforms. (CAN-2002-0655)
2275 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
2277 *) Remote buffer overflow in SSL3 protocol - an attacker could
2278 supply an oversized session ID to a client. (CAN-2002-0656)
2279 [Ben Laurie (CHATS)]
2281 *) Remote buffer overflow in SSL2 protocol - an attacker could
2282 supply an oversized client master key. (CAN-2002-0656)
2283 [Ben Laurie (CHATS)]
2285 Changes between 0.9.6c and 0.9.6d [9 May 2002]
2287 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
2288 encoded as NULL) with id-dsa-with-sha1.
2289 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
2291 *) Check various X509_...() return values in apps/req.c.
2292 [Nils Larsch <nla@trustcenter.de>]
2294 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
2295 an end-of-file condition would erronously be flagged, when the CRLF
2296 was just at the end of a processed block. The bug was discovered when
2297 processing data through a buffering memory BIO handing the data to a
2298 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
2299 <ptsekov@syntrex.com> and Nedelcho Stanev.
2302 *) Implement a countermeasure against a vulnerability recently found
2303 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
2304 before application data chunks to avoid the use of known IVs
2305 with data potentially chosen by the attacker.
2308 *) Fix length checks in ssl3_get_client_hello().
2311 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
2312 to prevent ssl3_read_internal() from incorrectly assuming that
2313 ssl3_read_bytes() found application data while handshake
2314 processing was enabled when in fact s->s3->in_read_app_data was
2315 merely automatically cleared during the initial handshake.
2316 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
2318 *) Fix object definitions for Private and Enterprise: they were not
2319 recognized in their shortname (=lowercase) representation. Extend
2320 obj_dat.pl to issue an error when using undefined keywords instead
2321 of silently ignoring the problem (Svenning Sorensen
2322 <sss@sss.dnsalias.net>).
2325 *) Fix DH_generate_parameters() so that it works for 'non-standard'
2326 generators, i.e. generators other than 2 and 5. (Previously, the
2327 code did not properly initialise the 'add' and 'rem' values to
2328 BN_generate_prime().)
2330 In the new general case, we do not insist that 'generator' is
2331 actually a primitive root: This requirement is rather pointless;
2332 a generator of the order-q subgroup is just as good, if not
2336 *) Map new X509 verification errors to alerts. Discovered and submitted by
2337 Tom Wu <tom@arcot.com>.
2340 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
2341 returning non-zero before the data has been completely received
2342 when using non-blocking I/O.
2343 [Bodo Moeller; problem pointed out by John Hughes]
2345 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
2346 [Ben Laurie, Lutz Jaenicke]
2348 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
2349 Yoram Zahavi <YoramZ@gilian.com>).
2352 *) Add information about CygWin 1.3 and on, and preserve proper
2353 configuration for the versions before that.
2354 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2356 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
2357 check whether we deal with a copy of a session and do not delete from
2358 the cache in this case. Problem reported by "Izhar Shoshani Levi"
2359 <izhar@checkpoint.com>.
2362 *) Do not store session data into the internal session cache, if it
2363 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
2364 flag is set). Proposed by Aslam <aslam@funk.com>.
2367 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
2371 *) [In 0.9.6d-engine release:]
2372 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2373 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2375 *) Add the configuration target linux-s390x.
2376 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
2378 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
2379 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
2380 variable as an indication that a ClientHello message has been
2381 received. As the flag value will be lost between multiple
2382 invocations of ssl3_accept when using non-blocking I/O, the
2383 function may not be aware that a handshake has actually taken
2384 place, thus preventing a new session from being added to the
2387 To avoid this problem, we now set s->new_session to 2 instead of
2388 using a local variable.
2389 [Lutz Jaenicke, Bodo Moeller]
2391 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
2392 if the SSL_R_LENGTH_MISMATCH error is detected.
2393 [Geoff Thorpe, Bodo Moeller]
2395 *) New 'shared_ldflag' column in Configure platform table.
2398 *) Fix EVP_CIPHER_mode macro.
2399 ["Dan S. Camper" <dan@bti.net>]
2401 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
2402 type, we must throw them away by setting rr->length to 0.
2403 [D P Chang <dpc@qualys.com>]
2405 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
2407 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
2408 <Dominikus.Scherkl@biodata.com>. (The previous implementation
2409 worked incorrectly for those cases where range = 10..._2 and
2410 3*range is two bits longer than range.)
2413 *) Only add signing time to PKCS7 structures if it is not already
2417 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
2418 OBJ_ld_ce should be OBJ_id_ce.
2419 Also some ip-pda OIDs in crypto/objects/objects.txt were
2420 incorrect (cf. RFC 3039).
2421 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
2423 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
2424 returns early because it has nothing to do.
2425 [Andy Schneider <andy.schneider@bjss.co.uk>]
2427 *) [In 0.9.6c-engine release:]
2428 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
2429 [Andy Schneider <andy.schneider@bjss.co.uk>]
2431 *) [In 0.9.6c-engine release:]
2432 Add support for Cryptographic Appliance's keyserver technology.
2433 (Use engine 'keyclient')
2434 [Cryptographic Appliances and Geoff Thorpe]
2436 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
2437 is called via tools/c89.sh because arguments have to be
2438 rearranged (all '-L' options must appear before the first object
2440 [Richard Shapiro <rshapiro@abinitio.com>]
2442 *) [In 0.9.6c-engine release:]
2443 Add support for Broadcom crypto accelerator cards, backported
2445 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
2447 *) [In 0.9.6c-engine release:]
2448 Add support for SureWare crypto accelerator cards from
2449 Baltimore Technologies. (Use engine 'sureware')
2450 [Baltimore Technologies and Mark Cox]
2452 *) [In 0.9.6c-engine release:]
2453 Add support for crypto accelerator cards from Accelerated
2454 Encryption Processing, www.aep.ie. (Use engine 'aep')
2455 [AEP Inc. and Mark Cox]
2457 *) Add a configuration entry for gcc on UnixWare.
2458 [Gary Benson <gbenson@redhat.com>]
2460 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
2461 messages are stored in a single piece (fixed-length part and
2462 variable-length part combined) and fix various bugs found on the way.
2465 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
2466 instead. BIO_gethostbyname() does not know what timeouts are
2467 appropriate, so entries would stay in cache even when they have
2469 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
2471 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
2472 faced with a pathologically small ClientHello fragment that does
2473 not contain client_version: Instead of aborting with an error,
2474 simply choose the highest available protocol version (i.e.,
2475 TLS 1.0 unless it is disabled). In practice, ClientHello
2476 messages are never sent like this, but this change gives us
2477 strictly correct behaviour at least for TLS.
2480 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
2481 never resets s->method to s->ctx->method when called from within
2482 one of the SSL handshake functions.
2483 [Bodo Moeller; problem pointed out by Niko Baric]
2485 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
2486 (sent using the client's version number) if client_version is
2487 smaller than the protocol version in use. Also change
2488 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
2489 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
2490 the client will at least see that alert.
2493 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
2497 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
2498 client receives HelloRequest while in a handshake.
2499 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
2501 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
2502 should end in 'break', not 'goto end' which circuments various
2503 cleanups done in state SSL_ST_OK. But session related stuff
2504 must be disabled for SSL_ST_OK in the case that we just sent a
2507 Also avoid some overhead by not calling ssl_init_wbio_buffer()
2508 before just sending a HelloRequest.
2509 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
2511 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
2512 reveal whether illegal block cipher padding was found or a MAC
2513 verification error occured. (Neither SSLerr() codes nor alerts
2514 are directly visible to potential attackers, but the information
2515 may leak via logfiles.)
2517 Similar changes are not required for the SSL 2.0 implementation
2518 because the number of padding bytes is sent in clear for SSL 2.0,
2519 and the extra bytes are just ignored. However ssl/s2_pkt.c
2520 failed to verify that the purported number of padding bytes is in
2524 *) Add OpenUNIX-8 support including shared libraries
2525 (Boyd Lynn Gerber <gerberb@zenez.com>).
2528 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
2529 'wristwatch attack' using huge encoding parameters (cf.
2530 James H. Manger's CRYPTO 2001 paper). Note that the
2531 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
2532 encoding parameters and hence was not vulnerable.
2535 *) BN_sqr() bug fix.
2536 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
2538 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
2539 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
2540 followed by modular reduction.
2541 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
2543 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
2544 equivalent based on BN_pseudo_rand() instead of BN_rand().
2547 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
2548 This function was broken, as the check for a new client hello message
2549 to handle SGC did not allow these large messages.
2550 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
2553 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
2556 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
2557 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
2560 *) Rework the configuration and shared library support for Tru64 Unix.
2561 The configuration part makes use of modern compiler features and
2562 still retains old compiler behavior for those that run older versions
2563 of the OS. The shared library support part includes a variant that
2564 uses the RPATH feature, and is available through the special
2565 configuration target "alpha-cc-rpath", which will never be selected
2567 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
2569 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
2570 with the same message size as in ssl3_get_certificate_request().
2571 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
2572 messages might inadvertently be reject as too long.
2573 [Petr Lampa <lampa@fee.vutbr.cz>]
2575 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
2578 *) Modified SSL library such that the verify_callback that has been set
2579 specificly for an SSL object with SSL_set_verify() is actually being
2580 used. Before the change, a verify_callback set with this function was
2581 ignored and the verify_callback() set in the SSL_CTX at the time of
2582 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
2583 to allow the necessary settings.
2586 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
2587 explicitly to NULL, as at least on Solaris 8 this seems not always to be
2588 done automatically (in contradiction to the requirements of the C
2589 standard). This made problems when used from OpenSSH.
2592 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
2593 dh->length and always used
2595 BN_rand_range(priv_key, dh->p).
2597 BN_rand_range() is not necessary for Diffie-Hellman, and this
2598 specific range makes Diffie-Hellman unnecessarily inefficient if
2599 dh->length (recommended exponent length) is much smaller than the
2600 length of dh->p. We could use BN_rand_range() if the order of
2601 the subgroup was stored in the DH structure, but we only have
2606 BN_rand(priv_key, l, ...)
2608 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
2614 RSA_eay_public_encrypt
2615 RSA_eay_private_decrypt
2616 RSA_eay_private_encrypt (signing)
2617 RSA_eay_public_decrypt (signature verification)
2619 (default implementations for RSA_public_encrypt,
2620 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
2621 always reject numbers >= n.
2624 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
2625 to synchronize access to 'locking_thread'. This is necessary on
2626 systems where access to 'locking_thread' (an 'unsigned long'
2627 variable) is not atomic.
2630 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
2631 *before* setting the 'crypto_lock_rand' flag. The previous code had
2632 a race condition if 0 is a valid thread ID.
2633 [Travis Vitek <vitek@roguewave.com>]
2635 *) Add support for shared libraries under Irix.
2636 [Albert Chin-A-Young <china@thewrittenword.com>]
2638 *) Add configuration option to build on Linux on both big-endian and
2640 [Ralf Baechle <ralf@uni-koblenz.de>]
2642 *) Add the possibility to create shared libraries on HP-UX.
2645 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
2647 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
2648 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
2649 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
2650 PRNG state recovery was possible based on the output of
2651 one PRNG request appropriately sized to gain knowledge on
2652 'md' followed by enough consecutive 1-byte PRNG requests
2653 to traverse all of 'state'.
2655 1. When updating 'md_local' (the current thread's copy of 'md')
2656 during PRNG output generation, hash all of the previous
2657 'md_local' value, not just the half used for PRNG output.
2659 2. Make the number of bytes from 'state' included into the hash
2660 independent from the number of PRNG bytes requested.
2662 The first measure alone would be sufficient to avoid
2663 Markku-Juhani's attack. (Actually it had never occurred
2664 to me that the half of 'md_local' used for chaining was the
2665 half from which PRNG output bytes were taken -- I had always
2666 assumed that the secret half would be used.) The second
2667 measure makes sure that additional data from 'state' is never
2668 mixed into 'md_local' in small portions; this heuristically
2669 further strengthens the PRNG.
2672 *) Fix crypto/bn/asm/mips3.s.
2675 *) When only the key is given to "enc", the IV is undefined. Print out
2676 an error message in this case.
2679 *) Handle special case when X509_NAME is empty in X509 printing routines.
2682 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
2683 positive and less than q.
2686 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
2687 used: it isn't thread safe and the add_lock_callback should handle
2689 [Paul Rose <Paul.Rose@bridge.com>]
2691 *) Verify that incoming data obeys the block size in
2692 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
2696 [Ulf Möller, Bodo Möller]
2698 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
2699 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
2700 when fixing the server behaviour for backwards-compatible 'client
2701 hello' messages. (Note that the attack is impractical against
2702 SSL 3.0 and TLS 1.0 anyway because length and version checking
2703 means that the probability of guessing a valid ciphertext is
2704 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
2707 Before 0.9.5, the countermeasure (hide the error by generating a
2708 random 'decryption result') did not work properly because
2709 ERR_clear_error() was missing, meaning that SSL_get_error() would
2710 detect the supposedly ignored error.
2712 Both problems are now fixed.
2715 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
2716 (previously it was 1024).
2719 *) Fix for compatibility mode trust settings: ignore trust settings
2720 unless some valid trust or reject settings are present.
2723 *) Fix for blowfish EVP: its a variable length cipher.
2726 *) Fix various bugs related to DSA S/MIME verification. Handle missing
2727 parameters in DSA public key structures and return an error in the
2728 DSA routines if parameters are absent.
2731 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
2732 in the current directory if neither $RANDFILE nor $HOME was set.
2733 RAND_file_name() in 0.9.6a returned NULL in this case. This has
2734 caused some confusion to Windows users who haven't defined $HOME.
2735 Thus RAND_file_name() is changed again: e_os.h can define a
2736 DEFAULT_HOME, which will be used if $HOME is not set.
2737 For Windows, we use "C:"; on other platforms, we still require
2738 environment variables.
2740 *) Move 'if (!initialized) RAND_poll()' into regions protected by
2741 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
2742 having multiple threads call RAND_poll() concurrently.
2745 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
2746 combination of a flag and a thread ID variable.
2747 Otherwise while one thread is in ssleay_rand_bytes (which sets the
2748 flag), *other* threads can enter ssleay_add_bytes without obeying
2749 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
2750 that they do not hold after the first thread unsets add_do_not_lock).
2753 *) Change bctest again: '-x' expressions are not available in all
2757 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
2759 *) Fix a couple of memory leaks in PKCS7_dataDecode()
2760 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
2762 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
2763 the default extension for executables, if any. Also, make the perl
2764 scripts that use symlink() to test if it really exists and use "cp"
2765 if it doesn't. All this made OpenSSL compilable and installable in
2769 *) Fix for asn1_GetSequence() for indefinite length constructed data.
2770 If SEQUENCE is length is indefinite just set c->slen to the total
2771 amount of data available.
2772 [Steve Henson, reported by shige@FreeBSD.org]
2773 [This change does not apply to 0.9.7.]
2775 *) Change bctest to avoid here-documents inside command substitution
2776 (workaround for FreeBSD /bin/sh bug).
2777 For compatibility with Ultrix, avoid shell functions (introduced
2778 in the bctest version that searches along $PATH).
2781 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
2782 with des_encrypt() defined on some operating systems, like Solaris
2786 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
2787 On the Importance of Eliminating Errors in Cryptographic
2788 Computations, J. Cryptology 14 (2001) 2, 101-119,
2789 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
2792 *) MIPS assembler BIGNUM division bug fix.
2795 *) Disabled incorrect Alpha assembler code.
2798 *) Fix PKCS#7 decode routines so they correctly update the length
2799 after reading an EOC for the EXPLICIT tag.
2801 [This change does not apply to 0.9.7.]
2803 *) Fix bug in PKCS#12 key generation routines. This was triggered
2804 if a 3DES key was generated with a 0 initial byte. Include
2805 PKCS12_BROKEN_KEYGEN compilation option to retain the old
2806 (but broken) behaviour.
2809 *) Enhance bctest to search for a working bc along $PATH and print
2811 [Tim Rice <tim@multitalents.net> via Richard Levitte]
2813 *) Fix memory leaks in err.c: free err_data string if necessary;
2814 don't write to the wrong index in ERR_set_error_data.
2817 *) Implement ssl23_peek (analogous to ssl23_read), which previously
2821 *) Replace rdtsc with _emit statements for VC++ version 5.
2822 [Jeremy Cooper <jeremy@baymoo.org>]
2824 *) Make it possible to reuse SSLv2 sessions.
2827 *) In copy_email() check for >= 0 as a return value for
2828 X509_NAME_get_index_by_NID() since 0 is a valid index.
2829 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
2831 *) Avoid coredump with unsupported or invalid public keys by checking if
2832 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
2833 PKCS7_verify() fails with non detached data.
2836 *) Don't use getenv in library functions when run as setuid/setgid.
2837 New function OPENSSL_issetugid().
2840 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
2841 due to incorrect handling of multi-threading:
2843 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
2845 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
2847 3. Count how many times MemCheck_off() has been called so that
2848 nested use can be treated correctly. This also avoids
2849 inband-signalling in the previous code (which relied on the
2850 assumption that thread ID 0 is impossible).
2853 *) Add "-rand" option also to s_client and s_server.
2856 *) Fix CPU detection on Irix 6.x.
2857 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
2858 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
2860 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
2863 [This change does not apply to 0.9.7.]
2865 *) Use the cached encoding of an X509_NAME structure rather than
2866 copying it. This is apparently the reason for the libsafe "errors"
2867 but the code is actually correct.
2870 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
2871 Bleichenbacher's DSA attack.
2872 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
2873 to be set and top=0 forces the highest bit to be set; top=-1 is new
2874 and leaves the highest bit random.
2875 [Ulf Moeller, Bodo Moeller]
2877 *) In the NCONF_...-based implementations for CONF_... queries
2878 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
2879 a temporary CONF structure with the data component set to NULL
2880 (which gives segmentation faults in lh_retrieve).
2881 Instead, use NULL for the CONF pointer in CONF_get_string and
2882 CONF_get_number (which may use environment variables) and directly
2883 return NULL from CONF_get_section.
2886 *) Fix potential buffer overrun for EBCDIC.
2889 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
2890 keyUsage if basicConstraints absent for a CA.
2893 *) Make SMIME_write_PKCS7() write mail header values with a format that
2894 is more generally accepted (no spaces before the semicolon), since
2895 some programs can't parse those values properly otherwise. Also make
2896 sure BIO's that break lines after each write do not create invalid
2900 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
2901 macros previously used would not encode an empty SEQUENCE OF
2902 and break the signature.
2904 [This change does not apply to 0.9.7.]
2906 *) Zero the premaster secret after deriving the master secret in
2910 *) Add some EVP_add_digest_alias registrations (as found in
2911 OpenSSL_add_all_digests()) to SSL_library_init()
2912 aka OpenSSL_add_ssl_algorithms(). This provides improved
2913 compatibility with peers using X.509 certificates
2914 with unconventional AlgorithmIdentifier OIDs.
2917 *) Fix for Irix with NO_ASM.
2918 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
2920 *) ./config script fixes.
2921 [Ulf Moeller, Richard Levitte]
2923 *) Fix 'openssl passwd -1'.
2926 *) Change PKCS12_key_gen_asc() so it can cope with non null
2927 terminated strings whose length is passed in the passlen
2928 parameter, for example from PEM callbacks. This was done
2929 by adding an extra length parameter to asc2uni().
2930 [Steve Henson, reported by <oddissey@samsung.co.kr>]
2932 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
2933 call failed, free the DSA structure.
2936 *) Fix to uni2asc() to cope with zero length Unicode strings.
2937 These are present in some PKCS#12 files.
2940 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
2941 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
2942 when writing a 32767 byte record.
2943 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
2945 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
2946 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
2948 (RSA objects have a reference count access to which is protected
2949 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
2950 so they are meant to be shared between threads.)
2951 [Bodo Moeller, Geoff Thorpe; original patch submitted by
2952 "Reddie, Steven" <Steven.Reddie@ca.com>]
2954 *) Fix a deadlock in CRYPTO_mem_leaks().
2957 *) Use better test patterns in bntest.
2960 *) rand_win.c fix for Borland C.
2963 *) BN_rshift bugfix for n == 0.
2966 *) Add a 'bctest' script that checks for some known 'bc' bugs
2967 so that 'make test' does not abort just because 'bc' is broken.
2970 *) Store verify_result within SSL_SESSION also for client side to
2971 avoid potential security hole. (Re-used sessions on the client side
2972 always resulted in verify_result==X509_V_OK, not using the original
2973 result of the server certificate verification.)
2976 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
2977 SSL3_RT_APPLICATION_DATA, return 0.
2978 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
2982 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
2983 releases, have been re-implemented by renaming the previous
2984 implementations of ssl2_read and ssl3_read to ssl2_read_internal
2985 and ssl3_read_internal, respectively, and adding 'peek' parameters
2986 to them. The new ssl[23]_{read,peek} functions are calls to
2987 ssl[23]_read_internal with the 'peek' flag set appropriately.
2988 A 'peek' parameter has also been added to ssl3_read_bytes, which
2989 does the actual work for ssl3_read_internal.
2992 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
2993 the method-specific "init()" handler. Also clean up ex_data after
2994 calling the method-specific "finish()" handler. Previously, this was
2995 happening the other way round.
2998 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
2999 The previous value, 12, was not always sufficient for BN_mod_exp().
3002 *) Make sure that shared libraries get the internal name engine with
3003 the full version number and not just 0. This should mark the
3004 shared libraries as not backward compatible. Of course, this should
3005 be changed again when we can guarantee backward binary compatibility.
3008 *) Fix typo in get_cert_by_subject() in by_dir.c
3009 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
3011 *) Rework the system to generate shared libraries:
3013 - Make note of the expected extension for the shared libraries and
3014 if there is a need for symbolic links from for example libcrypto.so.0
3015 to libcrypto.so.0.9.7. There is extended info in Configure for
3018 - Make as few rebuilds of the shared libraries as possible.
3020 - Still avoid linking the OpenSSL programs with the shared libraries.
3022 - When installing, install the shared libraries separately from the
3026 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
3028 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
3029 and not in SSL_clear because the latter is also used by the
3030 accept/connect functions; previously, the settings made by
3031 SSL_set_read_ahead would be lost during the handshake.
3032 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
3034 *) Correct util/mkdef.pl to be selective about disabled algorithms.
3035 Previously, it would create entries for disableed algorithms no
3039 *) Added several new manual pages for SSL_* function.
3042 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
3044 *) In ssl23_get_client_hello, generate an error message when faced
3045 with an initial SSL 3.0/TLS record that is too small to contain the
3046 first two bytes of the ClientHello message, i.e. client_version.
3047 (Note that this is a pathologic case that probably has never happened
3048 in real life.) The previous approach was to use the version number
3049 from the record header as a substitute; but our protocol choice
3050 should not depend on that one because it is not authenticated
3051 by the Finished messages.
3054 *) More robust randomness gathering functions for Windows.
3055 [Jeffrey Altman <jaltman@columbia.edu>]
3057 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
3058 not set then we don't setup the error code for issuer check errors
3059 to avoid possibly overwriting other errors which the callback does
3060 handle. If an application does set the flag then we assume it knows
3061 what it is doing and can handle the new informational codes
3065 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
3066 a general "ANY" type, as such it should be able to decode anything
3067 including tagged types. However it didn't check the class so it would
3068 wrongly interpret tagged types in the same way as their universal
3069 counterpart and unknown types were just rejected. Changed so that the
3070 tagged and unknown types are handled in the same way as a SEQUENCE:
3071 that is the encoding is stored intact. There is also a new type
3072 "V_ASN1_OTHER" which is used when the class is not universal, in this
3073 case we have no idea what the actual type is so we just lump them all
3077 *) On VMS, stdout may very well lead to a file that is written to
3078 in a record-oriented fashion. That means that every write() will
3079 write a separate record, which will be read separately by the
3080 programs trying to read from it. This can be very confusing.
3082 The solution is to put a BIO filter in the way that will buffer
3083 text until a linefeed is reached, and then write everything a
3084 line at a time, so every record written will be an actual line,
3085 not chunks of lines and not (usually doesn't happen, but I've
3086 seen it once) several lines in one record. BIO_f_linebuffer() is
3089 Currently, it's a VMS-only method, because that's where it has
3090 been tested well enough.
3093 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
3094 it can return incorrect results.
3095 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
3096 but it was in 0.9.6-beta[12].)
3099 *) Disable the check for content being present when verifying detached
3100 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
3101 include zero length content when signing messages.
3104 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
3105 BIO_ctrl (for BIO pairs).
3108 *) Add DSO method for VMS.
3111 *) Bug fix: Montgomery multiplication could produce results with the
3115 *) Add RPM specification openssl.spec and modify it to build three
3116 packages. The default package contains applications, application
3117 documentation and run-time libraries. The devel package contains
3118 include files, static libraries and function documentation. The
3119 doc package contains the contents of the doc directory. The original
3120 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
3123 *) Add a large number of documentation files for many SSL routines.
3124 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
3126 *) Add a configuration entry for Sony News 4.
3127 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
3129 *) Don't set the two most significant bits to one when generating a
3130 random number < q in the DSA library.
3133 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
3134 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
3135 the underlying transport is blocking) if a handshake took place.
3136 (The default behaviour is needed by applications such as s_client
3137 and s_server that use select() to determine when to use SSL_read;
3138 but for applications that know in advance when to expect data, it
3139 just makes things more complicated.)
3142 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
3146 *) Add a few more EBCDIC conditionals that make `req' and `x509'
3147 work better on such systems.
3148 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
3150 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
3151 Update PKCS12_parse() so it copies the friendlyName and the
3152 keyid to the certificates aux info.
3155 *) Fix bug in PKCS7_verify() which caused an infinite loop
3156 if there was more than one signature.
3157 [Sven Uszpelkat <su@celocom.de>]
3159 *) Major change in util/mkdef.pl to include extra information
3160 about each symbol, as well as presentig variables as well
3161 as functions. This change means that there's n more need
3162 to rebuild the .num files when some algorithms are excluded.
3165 *) Allow the verify time to be set by an application,
3166 rather than always using the current time.
3169 *) Phase 2 verify code reorganisation. The certificate
3170 verify code now looks up an issuer certificate by a
3171 number of criteria: subject name, authority key id
3172 and key usage. It also verifies self signed certificates
3173 by the same criteria. The main comparison function is
3174 X509_check_issued() which performs these checks.
3176 Lot of changes were necessary in order to support this
3177 without completely rewriting the lookup code.
3179 Authority and subject key identifier are now cached.
3181 The LHASH 'certs' is X509_STORE has now been replaced
3182 by a STACK_OF(X509_OBJECT). This is mainly because an
3183 LHASH can't store or retrieve multiple objects with
3184 the same hash value.
3186 As a result various functions (which were all internal
3187 use only) have changed to handle the new X509_STORE
3188 structure. This will break anything that messed round
3189 with X509_STORE internally.
3191 The functions X509_STORE_add_cert() now checks for an
3192 exact match, rather than just subject name.
3194 The X509_STORE API doesn't directly support the retrieval
3195 of multiple certificates matching a given criteria, however
3196 this can be worked round by performing a lookup first
3197 (which will fill the cache with candidate certificates)
3198 and then examining the cache for matches. This is probably
3199 the best we can do without throwing out X509_LOOKUP
3200 entirely (maybe later...).
3202 The X509_VERIFY_CTX structure has been enhanced considerably.
3204 All certificate lookup operations now go via a get_issuer()
3205 callback. Although this currently uses an X509_STORE it
3206 can be replaced by custom lookups. This is a simple way
3207 to bypass the X509_STORE hackery necessary to make this
3208 work and makes it possible to use more efficient techniques
3209 in future. A very simple version which uses a simple
3210 STACK for its trusted certificate store is also provided
3211 using X509_STORE_CTX_trusted_stack().
3213 The verify_cb() and verify() callbacks now have equivalents
3214 in the X509_STORE_CTX structure.
3216 X509_STORE_CTX also has a 'flags' field which can be used
3217 to customise the verify behaviour.
3220 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
3221 excludes S/MIME capabilities.
3224 *) When a certificate request is read in keep a copy of the
3225 original encoding of the signed data and use it when outputing
3226 again. Signatures then use the original encoding rather than
3227 a decoded, encoded version which may cause problems if the
3228 request is improperly encoded.
3231 *) For consistency with other BIO_puts implementations, call
3232 buffer_write(b, ...) directly in buffer_puts instead of calling
3235 In BIO_puts, increment b->num_write as in BIO_write.
3236 [Peter.Sylvester@EdelWeb.fr]
3238 *) Fix BN_mul_word for the case where the word is 0. (We have to use
3239 BN_zero, we may not return a BIGNUM with an array consisting of
3243 *) Avoid calling abort() from within the library when problems are
3244 detected, except if preprocessor symbols have been defined
3245 (such as REF_CHECK, BN_DEBUG etc.).
3248 *) New openssl application 'rsautl'. This utility can be
3249 used for low level RSA operations. DER public key
3250 BIO/fp routines also added.
3253 *) New Configure entry and patches for compiling on QNX 4.
3254 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
3256 *) A demo state-machine implementation was sponsored by
3257 Nuron (http://www.nuron.com/) and is now available in
3258 demos/state_machine.
3261 *) New options added to the 'dgst' utility for signature
3262 generation and verification.
3265 *) Unrecognized PKCS#7 content types are now handled via a
3266 catch all ASN1_TYPE structure. This allows unsupported
3267 types to be stored as a "blob" and an application can
3268 encode and decode it manually.
3271 *) Fix various signed/unsigned issues to make a_strex.c
3273 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
3275 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
3276 length if passed a buffer. ASN1_INTEGER_to_BN failed
3277 if passed a NULL BN and its argument was negative.
3278 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
3280 *) Modification to PKCS#7 encoding routines to output definite
3281 length encoding. Since currently the whole structures are in
3282 memory there's not real point in using indefinite length
3283 constructed encoding. However if OpenSSL is compiled with
3284 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
3287 *) Added BIO_vprintf() and BIO_vsnprintf().
3290 *) Added more prefixes to parse for in the the strings written
3291 through a logging bio, to cover all the levels that are available
3292 through syslog. The prefixes are now:
3294 PANIC, EMERG, EMR => LOG_EMERG
3295 ALERT, ALR => LOG_ALERT
3296 CRIT, CRI => LOG_CRIT
3297 ERROR, ERR => LOG_ERR
3298 WARNING, WARN, WAR => LOG_WARNING
3299 NOTICE, NOTE, NOT => LOG_NOTICE
3300 INFO, INF => LOG_INFO
3301 DEBUG, DBG => LOG_DEBUG
3303 and as before, if none of those prefixes are present at the
3304 beginning of the string, LOG_ERR is chosen.
3306 On Win32, the LOG_* levels are mapped according to this:
3308 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
3309 LOG_WARNING => EVENTLOG_WARNING_TYPE
3310 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
3314 *) Made it possible to reconfigure with just the configuration
3315 argument "reconf" or "reconfigure". The command line arguments
3316 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
3317 and are retrieved from there when reconfiguring.
3321 [Assar Westerlund <assar@sics.se>, Richard Levitte]
3323 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
3326 *) The obj_dat.pl script was messing up the sorting of object
3327 names. The reason was that it compared the quoted version
3328 of strings as a result "OCSP" > "OCSP Signing" because
3329 " > SPACE. Changed script to store unquoted versions of
3330 names and add quotes on output. It was also omitting some
3331 names from the lookup table if they were given a default
3332 value (that is if SN is missing it is given the same
3333 value as LN and vice versa), these are now added on the
3334 grounds that if an object has a name we should be able to
3335 look it up. Finally added warning output when duplicate
3336 short or long names are found.
3339 *) Changes needed for Tandem NSK.
3340 [Scott Uroff <scott@xypro.com>]
3342 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
3343 RSA_padding_check_SSLv23(), special padding was never detected
3344 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
3345 version rollback attacks was not effective.
3347 In s23_clnt.c, don't use special rollback-attack detection padding
3348 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
3349 client; similarly, in s23_srvr.c, don't do the rollback check if
3350 SSL 2.0 is the only protocol enabled in the server.
3353 *) Make it possible to get hexdumps of unprintable data with 'openssl
3354 asn1parse'. By implication, the functions ASN1_parse_dump() and
3355 BIO_dump_indent() are added.
3358 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
3359 these print out strings and name structures based on various
3360 flags including RFC2253 support and proper handling of
3361 multibyte characters. Added options to the 'x509' utility
3362 to allow the various flags to be set.
3365 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
3366 Also change the functions X509_cmp_current_time() and
3367 X509_gmtime_adj() work with an ASN1_TIME structure,
3368 this will enable certificates using GeneralizedTime in validity
3369 dates to be checked.
3372 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
3373 negative public key encodings) on by default,
3374 NO_NEG_PUBKEY_BUG can be set to disable it.
3377 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
3378 content octets. An i2c_ASN1_OBJECT is unnecessary because
3379 the encoding can be trivially obtained from the structure.
3382 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
3383 not read locks (CRYPTO_r_[un]lock).
3386 *) A first attempt at creating official support for shared
3387 libraries through configuration. I've kept it so the
3388 default is static libraries only, and the OpenSSL programs
3389 are always statically linked for now, but there are
3390 preparations for dynamic linking in place.
3391 This has been tested on Linux and Tru64.
3394 *) Randomness polling function for Win9x, as described in:
3395 Peter Gutmann, Software Generation of Practically Strong
3399 *) Fix so PRNG is seeded in req if using an already existing
3403 *) New options to smime application. -inform and -outform
3404 allow alternative formats for the S/MIME message including
3405 PEM and DER. The -content option allows the content to be
3406 specified separately. This should allow things like Netscape
3407 form signing output easier to verify.
3410 *) Fix the ASN1 encoding of tags using the 'long form'.
3413 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
3414 STRING types. These convert content octets to and from the
3415 underlying type. The actual tag and length octets are
3416 already assumed to have been read in and checked. These
3417 are needed because all other string types have virtually
3418 identical handling apart from the tag. By having versions
3419 of the ASN1 functions that just operate on content octets
3420 IMPLICIT tagging can be handled properly. It also allows
3421 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
3422 and ASN1_INTEGER are identical apart from the tag.
3425 *) Change the handling of OID objects as follows:
3427 - New object identifiers are inserted in objects.txt, following
3428 the syntax given in objects.README.
3429 - objects.pl is used to process obj_mac.num and create a new
3431 - obj_dat.pl is used to create a new obj_dat.h, using the data in
3434 This is currently kind of a hack, and the perl code in objects.pl
3435 isn't very elegant, but it works as I intended. The simplest way
3436 to check that it worked correctly is to look in obj_dat.h and
3437 check the array nid_objs and make sure the objects haven't moved
3438 around (this is important!). Additions are OK, as well as
3439 consistent name changes.
3442 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
3445 *) Addition of the command line parameter '-rand file' to 'openssl req'.
3446 The given file adds to whatever has already been seeded into the
3447 random pool through the RANDFILE configuration file option or
3448 environment variable, or the default random state file.
3451 *) mkstack.pl now sorts each macro group into lexical order.
3452 Previously the output order depended on the order the files
3453 appeared in the directory, resulting in needless rewriting
3457 *) Patches to make OpenSSL compile under Win32 again. Mostly
3458 work arounds for the VC++ problem that it treats func() as
3459 func(void). Also stripped out the parts of mkdef.pl that
3460 added extra typesafe functions: these no longer exist.
3463 *) Reorganisation of the stack code. The macros are now all
3464 collected in safestack.h . Each macro is defined in terms of
3465 a "stack macro" of the form SKM_<name>(type, a, b). The
3466 DEBUG_SAFESTACK is now handled in terms of function casts,
3467 this has the advantage of retaining type safety without the
3468 use of additional functions. If DEBUG_SAFESTACK is not defined
3469 then the non typesafe macros are used instead. Also modified the
3470 mkstack.pl script to handle the new form. Needs testing to see
3471 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
3472 the default if no major problems. Similar behaviour for ASN1_SET_OF
3473 and PKCS12_STACK_OF.
3476 *) When some versions of IIS use the 'NET' form of private key the
3477 key derivation algorithm is different. Normally MD5(password) is
3478 used as a 128 bit RC4 key. In the modified case
3479 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
3480 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
3481 as the old Netscape_RSA functions except they have an additional
3482 'sgckey' parameter which uses the modified algorithm. Also added
3483 an -sgckey command line option to the rsa utility. Thanks to
3484 Adrian Peck <bertie@ncipher.com> for posting details of the modified
3485 algorithm to openssl-dev.
3488 *) The evp_local.h macros were using 'c.##kname' which resulted in
3489 invalid expansion on some systems (SCO 5.0.5 for example).
3490 Corrected to 'c.kname'.
3491 [Phillip Porch <root@theporch.com>]
3493 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
3494 a STACK of email addresses from a certificate or request, these look
3495 in the subject name and the subject alternative name extensions and
3496 omit any duplicate addresses.
3499 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
3500 This makes DSA verification about 2 % faster.
3503 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
3504 (meaning that now 2^5 values will be precomputed, which is only 4 KB
3505 plus overhead for 1024 bit moduli).
3506 This makes exponentiations about 0.5 % faster for 1024 bit
3507 exponents (as measured by "openssl speed rsa2048").
3510 *) Rename memory handling macros to avoid conflicts with other
3512 Malloc => OPENSSL_malloc
3513 Malloc_locked => OPENSSL_malloc_locked
3514 Realloc => OPENSSL_realloc
3515 Free => OPENSSL_free
3518 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
3519 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
3522 *) CygWin32 support.
3523 [John Jarvie <jjarvie@newsguy.com>]
3525 *) The type-safe stack code has been rejigged. It is now only compiled
3526 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
3527 by default all type-specific stack functions are "#define"d back to
3528 standard stack functions. This results in more streamlined output
3529 but retains the type-safety checking possibilities of the original
3533 *) The STACK code has been cleaned up, and certain type declarations
3534 that didn't make a lot of sense have been brought in line. This has
3535 also involved a cleanup of sorts in safestack.h to more correctly
3536 map type-safe stack functions onto their plain stack counterparts.
3537 This work has also resulted in a variety of "const"ifications of
3538 lots of the code, especially "_cmp" operations which should normally
3539 be prototyped with "const" parameters anyway.
3542 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
3543 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
3544 (The PRNG state consists of two parts, the large pool 'state' and 'md',
3545 where all of 'md' is used each time the PRNG is used, but 'state'
3546 is used only indexed by a cyclic counter. As entropy may not be
3547 well distributed from the beginning, 'md' is important as a
3548 chaining variable. However, the output function chains only half
3549 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
3550 all of 'md', and seeding with STATE_SIZE dummy bytes will result
3551 in all of 'state' being rewritten, with the new values depending
3552 on virtually all of 'md'. This overcomes the 80 bit limitation.)
3555 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
3556 the handshake is continued after ssl_verify_cert_chain();
3557 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
3558 can lead to 'unexplainable' connection aborts later.
3559 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
3561 *) Major EVP API cipher revision.
3562 Add hooks for extra EVP features. This allows various cipher
3563 parameters to be set in the EVP interface. Support added for variable
3564 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
3565 setting of RC2 and RC5 parameters.
3567 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
3570 Remove lots of duplicated code from the EVP library. For example *every*
3571 cipher init() function handles the 'iv' in the same way according to the
3572 cipher mode. They also all do nothing if the 'key' parameter is NULL and
3573 for CFB and OFB modes they zero ctx->num.
3575 New functionality allows removal of S/MIME code RC2 hack.
3577 Most of the routines have the same form and so can be declared in terms
3580 By shifting this to the top level EVP_CipherInit() it can be removed from
3581 all individual ciphers. If the cipher wants to handle IVs or keys
3582 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
3585 Change lots of functions like EVP_EncryptUpdate() to now return a
3586 value: although software versions of the algorithms cannot fail
3587 any installed hardware versions can.
3590 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
3591 this option is set, tolerate broken clients that send the negotiated
3592 protocol version number instead of the requested protocol version
3596 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
3597 i.e. non-zero for export ciphersuites, zero otherwise.
3598 Previous versions had this flag inverted, inconsistent with
3599 rsa_tmp_cb (..._TMP_RSA_CB).
3600 [Bodo Moeller; problem reported by Amit Chopra]
3602 *) Add missing DSA library text string. Work around for some IIS
3603 key files with invalid SEQUENCE encoding.
3606 *) Add a document (doc/standards.txt) that list all kinds of standards
3607 and so on that are implemented in OpenSSL.
3610 *) Enhance c_rehash script. Old version would mishandle certificates
3611 with the same subject name hash and wouldn't handle CRLs at all.
3612 Added -fingerprint option to crl utility, to support new c_rehash
3616 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
3619 *) Fix for SSL server purpose checking. Server checking was
3620 rejecting certificates which had extended key usage present
3621 but no ssl client purpose.
3622 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
3624 *) Make PKCS#12 code work with no password. The PKCS#12 spec
3625 is a little unclear about how a blank password is handled.
3626 Since the password in encoded as a BMPString with terminating
3627 double NULL a zero length password would end up as just the
3628 double NULL. However no password at all is different and is
3629 handled differently in the PKCS#12 key generation code. NS
3630 treats a blank password as zero length. MSIE treats it as no
3631 password on export: but it will try both on import. We now do
3632 the same: PKCS12_parse() tries zero length and no password if
3633 the password is set to "" or NULL (NULL is now a valid password:
3634 it wasn't before) as does the pkcs12 application.
3637 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
3638 perror when PEM_read_bio_X509_REQ fails, the error message must
3639 be obtained from the error queue.
3642 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
3643 it in ERR_remove_state if appropriate, and change ERR_get_state
3644 accordingly to avoid race conditions (this is necessary because
3645 thread_hash is no longer constant once set).
3648 *) Bugfix for linux-elf makefile.one.
3651 *) RSA_get_default_method() will now cause a default
3652 RSA_METHOD to be chosen if one doesn't exist already.
3653 Previously this was only set during a call to RSA_new()
3654 or RSA_new_method(NULL) meaning it was possible for
3655 RSA_get_default_method() to return NULL.
3658 *) Added native name translation to the existing DSO code
3659 that will convert (if the flag to do so is set) filenames
3660 that are sufficiently small and have no path information
3661 into a canonical native form. Eg. "blah" converted to
3662 "libblah.so" or "blah.dll" etc.
3665 *) New function ERR_error_string_n(e, buf, len) which is like
3666 ERR_error_string(e, buf), but writes at most 'len' bytes
3667 including the 0 terminator. For ERR_error_string_n, 'buf'
3669 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
3671 *) CONF library reworked to become more general. A new CONF
3672 configuration file reader "class" is implemented as well as a
3673 new functions (NCONF_*, for "New CONF") to handle it. The now
3674 old CONF_* functions are still there, but are reimplemented to
3675 work in terms of the new functions. Also, a set of functions
3676 to handle the internal storage of the configuration data is
3677 provided to make it easier to write new configuration file
3678 reader "classes" (I can definitely see something reading a
3679 configuration file in XML format, for example), called _CONF_*,
3680 or "the configuration storage API"...
3682 The new configuration file reading functions are:
3684 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
3685 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
3687 NCONF_default, NCONF_WIN32
3689 NCONF_dump_fp, NCONF_dump_bio
3691 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
3692 NCONF_new creates a new CONF object. This works in the same way
3693 as other interfaces in OpenSSL, like the BIO interface.
3694 NCONF_dump_* dump the internal storage of the configuration file,
3695 which is useful for debugging. All other functions take the same
3696 arguments as the old CONF_* functions wth the exception of the
3697 first that must be a `CONF *' instead of a `LHASH *'.
3699 To make it easer to use the new classes with the old CONF_* functions,
3700 the function CONF_set_default_method is provided.
3703 *) Add '-tls1' option to 'openssl ciphers', which was already
3704 mentioned in the documentation but had not been implemented.
3705 (This option is not yet really useful because even the additional
3706 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
3709 *) Initial DSO code added into libcrypto for letting OpenSSL (and
3710 OpenSSL-based applications) load shared libraries and bind to
3711 them in a portable way.
3712 [Geoff Thorpe, with contributions from Richard Levitte]
3714 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
3716 *) Make sure _lrotl and _lrotr are only used with MSVC.
3718 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
3719 (the default implementation of RAND_status).
3721 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
3722 to '-clrext' (= clear extensions), as intended and documented.
3723 [Bodo Moeller; inconsistency pointed out by Michael Attili
3726 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
3727 was larger than the MD block size.
3728 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
3730 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
3731 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
3732 using the passed key: if the passed key was a private key the result
3733 of X509_print(), for example, would be to print out all the private key
3737 *) des_quad_cksum() byte order bug fix.
3738 [Ulf Möller, using the problem description in krb4-0.9.7, where
3739 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
3741 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
3743 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
3745 *) For easily testing in shell scripts whether some command
3746 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
3747 returns with exit code 0 iff no command of the given name is available.
3748 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
3749 the output goes to stdout and nothing is printed to stderr.
3750 Additional arguments are always ignored.
3752 Since for each cipher there is a command of the same name,
3753 the 'no-cipher' compilation switches can be tested this way.
3755 ('openssl no-XXX' is not able to detect pseudo-commands such
3756 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
3759 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
3762 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
3763 is set; it will be thrown away anyway because each handshake creates
3765 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
3766 to parameters -- in previous versions (since OpenSSL 0.9.3) the
3767 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
3768 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
3771 *) New s_client option -ign_eof: EOF at stdin is ignored, and
3772 'Q' and 'R' lose their special meanings (quit/renegotiate).
3773 This is part of what -quiet does; unlike -quiet, -ign_eof
3774 does not suppress any output.
3777 *) Add compatibility options to the purpose and trust code. The
3778 purpose X509_PURPOSE_ANY is "any purpose" which automatically
3779 accepts a certificate or CA, this was the previous behaviour,
3780 with all the associated security issues.
3782 X509_TRUST_COMPAT is the old trust behaviour: only and
3783 automatically trust self signed roots in certificate store. A
3784 new trust setting X509_TRUST_DEFAULT is used to specify that
3785 a purpose has no associated trust setting and it should instead
3786 use the value in the default purpose.
3789 *) Fix the PKCS#8 DSA private key code so it decodes keys again
3790 and fix a memory leak.
3793 *) In util/mkerr.pl (which implements 'make errors'), preserve
3794 reason strings from the previous version of the .c file, as
3795 the default to have only downcase letters (and digits) in
3796 automatically generated reasons codes is not always appropriate.
3799 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
3800 using strerror. Previously, ERR_reason_error_string() returned
3801 library names as reason strings for SYSerr; but SYSerr is a special
3802 case where small numbers are errno values, not library numbers.
3805 *) Add '-dsaparam' option to 'openssl dhparam' application. This
3806 converts DSA parameters into DH parameters. (When creating parameters,
3807 DSA_generate_parameters is used.)
3810 *) Include 'length' (recommended exponent length) in C code generated
3811 by 'openssl dhparam -C'.
3814 *) The second argument to set_label in perlasm was already being used
3815 so couldn't be used as a "file scope" flag. Moved to third argument
3819 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
3820 instead of RAND_bytes for encryption IVs and salts.
3823 *) Include RAND_status() into RAND_METHOD instead of implementing
3824 it only for md_rand.c Otherwise replacing the PRNG by calling
3825 RAND_set_rand_method would be impossible.
3828 *) Don't let DSA_generate_key() enter an infinite loop if the random
3829 number generation fails.
3832 *) New 'rand' application for creating pseudo-random output.
3835 *) Added configuration support for Linux/IA64
3836 [Rolf Haberrecker <rolf@suse.de>]
3838 *) Assembler module support for Mingw32.
3841 *) Shared library support for HPUX (in shlib/).
3842 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
3844 *) Shared library support for Solaris gcc.
3845 [Lutz Behnke <behnke@trustcenter.de>]
3847 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
3849 *) PKCS7_encrypt() was adding text MIME headers twice because they
3850 were added manually and by SMIME_crlf_copy().
3853 *) In bntest.c don't call BN_rand with zero bits argument.
3854 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
3856 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
3857 case was implemented. This caused BN_div_recp() to fail occasionally.
3860 *) Add an optional second argument to the set_label() in the perl
3861 assembly language builder. If this argument exists and is set
3862 to 1 it signals that the assembler should use a symbol whose
3863 scope is the entire file, not just the current function. This
3864 is needed with MASM which uses the format label:: for this scope.
3865 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
3867 *) Change the ASN1 types so they are typedefs by default. Before
3868 almost all types were #define'd to ASN1_STRING which was causing
3869 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
3873 *) Change names of new functions to the new get1/get0 naming
3874 convention: After 'get1', the caller owns a reference count
3875 and has to call ..._free; 'get0' returns a pointer to some
3876 data structure without incrementing reference counters.
3877 (Some of the existing 'get' functions increment a reference
3878 counter, some don't.)
3879 Similarly, 'set1' and 'add1' functions increase reference
3880 counters or duplicate objects.
3883 *) Allow for the possibility of temp RSA key generation failure:
3884 the code used to assume it always worked and crashed on failure.
3887 *) Fix potential buffer overrun problem in BIO_printf().
3888 [Ulf Möller, using public domain code by Patrick Powell; problem
3889 pointed out by David Sacerdote <das33@cornell.edu>]
3891 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
3892 RAND_egd() and RAND_status(). In the command line application,
3893 the EGD socket can be specified like a seed file using RANDFILE
3897 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
3898 Some CAs (e.g. Verisign) distribute certificates in this form.
3901 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
3902 list to exclude them. This means that no special compilation option
3903 is needed to use anonymous DH: it just needs to be included in the
3907 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
3908 EVP_MD_type. The old functionality is available in a new macro called
3909 EVP_MD_md(). Change code that uses it and update docs.
3912 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
3913 where the 'void *' argument is replaced by a function pointer argument.
3914 Previously 'void *' was abused to point to functions, which works on
3915 many platforms, but is not correct. As these functions are usually
3916 called by macros defined in OpenSSL header files, most source code
3917 should work without changes.
3920 *) <openssl/opensslconf.h> (which is created by Configure) now contains
3921 sections with information on -D... compiler switches used for
3922 compiling the library so that applications can see them. To enable
3923 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
3924 must be defined. E.g.,
3925 #define OPENSSL_ALGORITHM_DEFINES
3926 #include <openssl/opensslconf.h>
3927 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
3928 [Richard Levitte, Ulf and Bodo Möller]
3930 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
3934 *) Change the 'other' type in certificate aux info to a STACK_OF
3935 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
3936 the required ASN1 format: arbitrary types determined by an OID.
3939 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
3940 argument to 'req'. This is not because the function is newer or
3941 better than others it just uses the work 'NEW' in the certificate
3942 request header lines. Some software needs this.
3945 *) Reorganise password command line arguments: now passwords can be
3946 obtained from various sources. Delete the PEM_cb function and make
3947 it the default behaviour: i.e. if the callback is NULL and the
3948 usrdata argument is not NULL interpret it as a null terminated pass
3949 phrase. If usrdata and the callback are NULL then the pass phrase
3950 is prompted for as usual.
3953 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
3954 the support is automatically enabled. The resulting binaries will
3955 autodetect the card and use it if present.
3956 [Ben Laurie and Compaq Inc.]
3958 *) Work around for Netscape hang bug. This sends certificate request
3959 and server done in one record. Since this is perfectly legal in the
3960 SSL/TLS protocol it isn't a "bug" option and is on by default. See
3961 the bugs/SSLv3 entry for more info.
3964 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
3967 *) Add -rand argument to smime and pkcs12 applications and read/write
3971 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
3974 *) Add command line password options to the remaining applications.
3977 *) Bug fix for BN_div_recp() for numerators with an even number of
3981 *) More tests in bntest.c, and changed test_bn output.
3984 *) ./config recognizes MacOS X now.
3987 *) Bug fix for BN_div() when the first words of num and divsor are
3988 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
3991 *) Add support for various broken PKCS#8 formats, and command line
3992 options to produce them.
3995 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
3996 get temporary BIGNUMs from a BN_CTX.
3999 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
4003 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
4004 include a #define from the old name to the new. The original intent
4005 was that statically linked binaries could for example just call
4006 SSLeay_add_all_ciphers() to just add ciphers to the table and not
4007 link with digests. This never worked becayse SSLeay_add_all_digests()
4008 and SSLeay_add_all_ciphers() were in the same source file so calling
4009 one would link with the other. They are now in separate source files.
4012 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
4015 *) Use a less unusual form of the Miller-Rabin primality test (it used
4016 a binary algorithm for exponentiation integrated into the Miller-Rabin
4017 loop, our standard modexp algorithms are faster).
4020 *) Support for the EBCDIC character set completed.
4021 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
4023 *) Source code cleanups: use const where appropriate, eliminate casts,
4024 use void * instead of char * in lhash.
4027 *) Bugfix: ssl3_send_server_key_exchange was not restartable
4028 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
4029 this the server could overwrite ephemeral keys that the client
4033 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
4034 using 50 iterations of the Rabin-Miller test.
4036 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
4037 iterations of the Rabin-Miller test as required by the appendix
4038 to FIPS PUB 186[-1]) instead of DSA_is_prime.
4039 As BN_is_prime_fasttest includes trial division, DSA parameter
4040 generation becomes much faster.
4042 This implies a change for the callback functions in DSA_is_prime
4043 and DSA_generate_parameters: The callback function is called once
4044 for each positive witness in the Rabin-Miller test, not just
4045 occasionally in the inner loop; and the parameters to the
4046 callback function now provide an iteration count for the outer
4047 loop rather than for the current invocation of the inner loop.
4048 DSA_generate_parameters additionally can call the callback
4049 function with an 'iteration count' of -1, meaning that a
4050 candidate has passed the trial division test (when q is generated
4051 from an application-provided seed, trial division is skipped).
4054 *) New function BN_is_prime_fasttest that optionally does trial
4055 division before starting the Rabin-Miller test and has
4056 an additional BN_CTX * argument (whereas BN_is_prime always
4057 has to allocate at least one BN_CTX).
4058 'callback(1, -1, cb_arg)' is called when a number has passed the
4059 trial division stage.
4062 *) Fix for bug in CRL encoding. The validity dates weren't being handled
4066 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
4069 *) New function BN_pseudo_rand().
4072 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
4073 bignum version of BN_from_montgomery() with the working code from
4074 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
4078 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
4079 made it impossible to use the same SSL_SESSION data structure in
4080 SSL2 clients in multiple threads.
4083 *) The return value of RAND_load_file() no longer counts bytes obtained
4084 by stat(). RAND_load_file(..., -1) is new and uses the complete file
4085 to seed the PRNG (previously an explicit byte count was required).
4086 [Ulf Möller, Bodo Möller]
4088 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
4089 used (char *) instead of (void *) and had casts all over the place.
4092 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
4095 *) Retain source code compatibility for BN_prime_checks macro:
4096 BN_is_prime(..., BN_prime_checks, ...) now uses
4097 BN_prime_checks_for_size to determine the appropriate number of
4098 Rabin-Miller iterations.
4101 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
4102 DH_CHECK_P_NOT_SAFE_PRIME.
4103 (Check if this is true? OpenPGP calls them "strong".)
4106 *) Merge the functionality of "dh" and "gendh" programs into a new program
4107 "dhparam". The old programs are retained for now but will handle DH keys
4108 (instead of parameters) in future.
4111 *) Make the ciphers, s_server and s_client programs check the return values
4112 when a new cipher list is set.
4115 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
4116 ciphers. Before when the 56bit ciphers were enabled the sorting was
4119 The syntax for the cipher sorting has been extended to support sorting by
4120 cipher-strength (using the strength_bits hard coded in the tables).
4121 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
4123 Fix a bug in the cipher-command parser: when supplying a cipher command
4124 string with an "undefined" symbol (neither command nor alphanumeric
4125 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
4126 an error is flagged.
4128 Due to the strength-sorting extension, the code of the
4129 ssl_create_cipher_list() function was completely rearranged. I hope that
4130 the readability was also increased :-)
4131 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
4133 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
4134 for the first serial number and places 2 in the serial number file. This
4135 avoids problems when the root CA is created with serial number zero and
4136 the first user certificate has the same issuer name and serial number
4140 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
4141 the new code. Add documentation for this stuff.
4144 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
4145 X509_*() to X509at_*() on the grounds that they don't handle X509
4146 structures and behave in an analagous way to the X509v3 functions:
4147 they shouldn't be called directly but wrapper functions should be used
4150 So we also now have some wrapper functions that call the X509at functions
4151 when passed certificate requests. (TO DO: similar things can be done with
4152 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
4153 things. Some of these need some d2i or i2d and print functionality
4154 because they handle more complex structures.)
4157 *) Add missing #ifndefs that caused missing symbols when building libssl
4158 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
4159 NO_RSA in ssl/s2*.c.
4160 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
4162 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
4163 has a return value which indicates the quality of the random data
4164 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
4165 error queue. New function RAND_pseudo_bytes() generates output that is
4166 guaranteed to be unique but not unpredictable. RAND_add is like
4167 RAND_seed, but takes an extra argument for an entropy estimate
4168 (RAND_seed always assumes full entropy).
4171 *) Do more iterations of Rabin-Miller probable prime test (specifically,
4172 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
4173 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
4174 in crypto/bn/bn_prime.c for the complete table). This guarantees a
4175 false-positive rate of at most 2^-80 for random input.
4178 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
4181 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
4182 in the 0.9.5 release), this returns the chain
4183 from an X509_CTX structure with a dup of the stack and all
4184 the X509 reference counts upped: so the stack will exist
4185 after X509_CTX_cleanup() has been called. Modify pkcs12.c
4188 Also make SSL_SESSION_print() print out the verify return
4192 *) Add manpage for the pkcs12 command. Also change the default
4193 behaviour so MAC iteration counts are used unless the new
4194 -nomaciter option is used. This improves file security and
4195 only older versions of MSIE (4.0 for example) need it.
4198 *) Honor the no-xxx Configure options when creating .DEF files.
4201 *) Add PKCS#10 attributes to field table: challengePassword,
4202 unstructuredName and unstructuredAddress. These are taken from
4203 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
4204 international characters are used.
4206 More changes to X509_ATTRIBUTE code: allow the setting of types
4207 based on strings. Remove the 'loc' parameter when adding
4208 attributes because these will be a SET OF encoding which is sorted
4212 *) Initial changes to the 'req' utility to allow request generation
4213 automation. This will allow an application to just generate a template
4214 file containing all the field values and have req construct the
4217 Initial support for X509_ATTRIBUTE handling. Stacks of these are
4218 used all over the place including certificate requests and PKCS#7
4219 structures. They are currently handled manually where necessary with
4220 some primitive wrappers for PKCS#7. The new functions behave in a
4221 manner analogous to the X509 extension functions: they allow
4222 attributes to be looked up by NID and added.
4224 Later something similar to the X509V3 code would be desirable to
4225 automatically handle the encoding, decoding and printing of the
4226 more complex types. The string types like challengePassword can
4227 be handled by the string table functions.
4229 Also modified the multi byte string table handling. Now there is
4230 a 'global mask' which masks out certain types. The table itself
4231 can use the flag STABLE_NO_MASK to ignore the mask setting: this
4232 is useful when for example there is only one permissible type
4233 (as in countryName) and using the mask might result in no valid
4237 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
4238 SSL_get_peer_finished to allow applications to obtain the latest
4239 Finished messages sent to the peer or expected from the peer,
4240 respectively. (SSL_get_peer_finished is usually the Finished message
4241 actually received from the peer, otherwise the protocol will be aborted.)
4243 As the Finished message are message digests of the complete handshake
4244 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
4245 be used for external authentication procedures when the authentication
4246 provided by SSL/TLS is not desired or is not enough.
4249 *) Enhanced support for Alpha Linux is added. Now ./config checks if
4250 the host supports BWX extension and if Compaq C is present on the
4251 $PATH. Just exploiting of the BWX extension results in 20-30%
4252 performance kick for some algorithms, e.g. DES and RC4 to mention
4253 a couple. Compaq C in turn generates ~20% faster code for MD5 and
4257 *) Add support for MS "fast SGC". This is arguably a violation of the
4258 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
4259 weak crypto and after checking the certificate is SGC a second one
4260 with strong crypto. MS SGC stops the first handshake after receiving
4261 the server certificate message and sends a second client hello. Since
4262 a server will typically do all the time consuming operations before
4263 expecting any further messages from the client (server key exchange
4264 is the most expensive) there is little difference between the two.
4266 To get OpenSSL to support MS SGC we have to permit a second client
4267 hello message after we have sent server done. In addition we have to
4268 reset the MAC if we do get this second client hello.
4271 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
4272 if a DER encoded private key is RSA or DSA traditional format. Changed
4273 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
4274 format DER encoded private key. Newer code should use PKCS#8 format which
4275 has the key type encoded in the ASN1 structure. Added DER private key
4276 support to pkcs8 application.
4279 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
4280 ciphersuites has been selected (as required by the SSL 3/TLS 1
4281 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
4282 is set, we interpret this as a request to violate the specification
4283 (the worst that can happen is a handshake failure, and 'correct'
4284 behaviour would result in a handshake failure anyway).
4287 *) In SSL_CTX_add_session, take into account that there might be multiple
4288 SSL_SESSION structures with the same session ID (e.g. when two threads
4289 concurrently obtain them from an external cache).
4290 The internal cache can handle only one SSL_SESSION with a given ID,
4291 so if there's a conflict, we now throw out the old one to achieve
4295 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
4296 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
4297 some routines that use cipher OIDs: some ciphers do not have OIDs
4298 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
4302 *) Simplify the trust setting structure and code. Now we just have
4303 two sequences of OIDs for trusted and rejected settings. These will
4304 typically have values the same as the extended key usage extension
4305 and any application specific purposes.
4307 The trust checking code now has a default behaviour: it will just
4308 check for an object with the same NID as the passed id. Functions can
4309 be provided to override either the default behaviour or the behaviour
4310 for a given id. SSL client, server and email already have functions
4311 in place for compatibility: they check the NID and also return "trusted"
4312 if the certificate is self signed.
4315 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
4316 traditional format into an EVP_PKEY structure.
4319 *) Add a password callback function PEM_cb() which either prompts for
4320 a password if usr_data is NULL or otherwise assumes it is a null
4321 terminated password. Allow passwords to be passed on command line
4322 environment or config files in a few more utilities.
4325 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
4326 keys. Add some short names for PKCS#8 PBE algorithms and allow them
4327 to be specified on the command line for the pkcs8 and pkcs12 utilities.
4328 Update documentation.
4331 *) Support for ASN1 "NULL" type. This could be handled before by using
4332 ASN1_TYPE but there wasn't any function that would try to read a NULL
4333 and produce an error if it couldn't. For compatibility we also have
4334 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
4335 don't allocate anything because they don't need to.
4338 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
4340 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
4342 *) Rebuild of the memory allocation routines used by OpenSSL code and
4343 possibly others as well. The purpose is to make an interface that
4344 provide hooks so anyone can build a separate set of allocation and
4345 deallocation routines to be used by OpenSSL, for example memory
4346 pool implementations, or something else, which was previously hard
4347 since Malloc(), Realloc() and Free() were defined as macros having
4348 the values malloc, realloc and free, respectively (except for Win32
4349 compilations). The same is provided for memory debugging code.
4350 OpenSSL already comes with functionality to find memory leaks, but
4351 this gives people a chance to debug other memory problems.
4353 With these changes, a new set of functions and macros have appeared:
4355 CRYPTO_set_mem_debug_functions() [F]
4356 CRYPTO_get_mem_debug_functions() [F]
4357 CRYPTO_dbg_set_options() [F]
4358 CRYPTO_dbg_get_options() [F]
4359 CRYPTO_malloc_debug_init() [M]
4361 The memory debug functions are NULL by default, unless the library
4362 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
4363 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
4364 gives the standard debugging functions that&
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