5 Changes between 0.9.8f and 0.9.9 [xx XXX xxxx]
7 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
8 support including streaming MAC support: this is required for GOST
10 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
12 *) Add option -stream to use PKCS#7 streaming in smime utility. New
13 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
14 to output in BER and PEM format.
17 *) Experimental support for use of HMAC via EVP_PKEY interface. This
18 allows HMAC to be handled via the EVP_DigestSign*() interface. The
19 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
20 ENGINE support for HMAC keys which are unextractable. New -mac and
21 -macopt options to dgst utility.
24 *) New option -sigopt to dgst utility. Update dgst to use
25 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
26 alternative signing paramaters such as X9.31 or PSS in the dgst
30 *) Change ssl_cipher_apply_rule(), the internal function that does
31 the work each time a ciphersuite string requests enabling
32 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
33 removing ("!foo+bar") a class of ciphersuites: Now it maintains
34 the order of disabled ciphersuites such that those ciphersuites
35 that most recently went from enabled to disabled not only stay
36 in order with respect to each other, but also have higher priority
37 than other disabled ciphersuites the next time ciphersuites are
40 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
41 the same ciphersuites as with "HIGH" alone, but in a specific
42 order where the PSK ciphersuites come first (since they are the
43 most recently disabled ciphersuites when "HIGH" is parsed).
45 Also, change ssl_create_cipher_list() (using this new
46 funcionality) such that between otherwise identical
47 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
51 *) Change ssl_create_cipher_list() so that it automatically
52 arranges the ciphersuites in reasonable order before starting
53 to process the rule string. Thus, the definition for "DEFAULT"
54 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
55 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
56 This makes it much easier to arrive at a reasonable default order
57 in applications for which anonymous ciphers are OK (meaning
58 that you can't actually use DEFAULT).
59 [Bodo Moeller; suggested by Victor Duchovni]
61 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
62 processing) into multiple integers instead of setting
63 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
64 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
65 (These masks as well as the individual bit definitions are hidden
66 away into the non-exported interface ssl/ssl_locl.h, so this
67 change to the definition of the SSL_CIPHER structure shouldn't
68 affect applications.) This give us more bits for each of these
69 categories, so there is no longer a need to coagulate AES128 and
70 AES256 into a single algorithm bit, and to coagulate Camellia128
71 and Camellia256 into a single algorithm bit, which has led to all
74 Thus, among other things, the kludge introduced in 0.9.7m and
75 0.9.8e for masking out AES256 independently of AES128 or masking
76 out Camellia256 independently of AES256 is not needed here in 0.9.9.
78 With the change, we also introduce new ciphersuite aliases that
79 so far were missing: "AES128", "AES256", "CAMELLIA128", and
83 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
84 Use the leftmost N bytes of the signature input if the input is
85 larger than the prime q (with N being the size in bytes of q).
88 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
89 it yet and it is largely untested.
92 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
95 *) Initial incomplete changes to avoid need for function casts in OpenSSL
96 some compilers (gcc 4.2 and later) reject their use. Safestack is
97 reimplemented using inline functions: tests show that these calls are
98 typically optimized away by compilers so they have no additional overhead.
99 Update ASN1 to avoid use of legacy functions.
102 *) Win32/64 targets are linked with Winsock2.
105 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
106 to external functions. This can be used to increase CRL handling
107 efficiency especially when CRLs are very large by (for example) storing
108 the CRL revoked certificates in a database.
111 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
112 new CRLs added to a directory can be used. New command line option
113 -verify_return_error to s_client and s_server. This causes real errors
114 to be returned by the verify callback instead of carrying on no matter
115 what. This reflects the way a "real world" verify callback would behave.
118 *) GOST engine, supporting several GOST algorithms and public key formats.
119 Kindly donated by Cryptocom.
122 *) Partial support for Issuing Distribution Point CRL extension. CRLs
123 partitioned by DP are handled but no indirect CRL or reason partitioning
124 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
125 selected via a scoring technique which handles IDP and AKID in CRLs.
128 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
129 will ultimately be used for all verify operations: this will remove the
130 X509_STORE dependency on certificate verification and allow alternative
131 lookup methods. X509_STORE based implementations of these two callbacks.
134 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
135 Modify get_crl() to find a valid (unexpired) CRL if possible.
138 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
139 this would be called X509_CRL_cmp() but that name is already used by
140 a function that just compares CRL issuer names. Cache several CRL
141 extensions in X509_CRL structure and cache CRLDP in X509.
144 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
145 this maps equivalent X509_NAME structures into a consistent structure.
146 Name comparison can then be performed rapidly using memcmp().
149 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
153 *) Allow digests to supply their own micalg string for S/MIME type using
154 the ctrl EVP_MD_CTRL_MICALG.
157 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
158 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
159 ctrl. It can then customise the structure before and/or after signing
163 *) New function OBJ_add_sigid() to allow application defined signature OIDs
164 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
165 to free up any added signature OIDs.
168 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
169 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
170 digest and cipher tables. New options added to openssl utility:
171 list-message-digest-algorithms and list-cipher-algorithms.
174 *) In addition to the numerical (unsigned long) thread ID, provide
175 for a pointer (void *) thread ID. This helps accomodate systems
176 that do not provide an unsigned long thread ID. OpenSSL assumes
177 it is in the same thread iff both the numerical and the pointer
178 thread ID agree; so applications are just required to define one
179 of them appropriately (e.g., by using a pointer to a per-thread
180 memory object malloc()ed by the application for the pointer-type
181 thread ID). Exactly analoguous to the existing functions
183 void CRYPTO_set_id_callback(unsigned long (*func)(void));
184 unsigned long (*CRYPTO_get_id_callback(void))(void);
185 unsigned long CRYPTO_thread_id(void);
187 we now have additional functions
189 void CRYPTO_set_idptr_callback(void *(*func)(void));
190 void *(*CRYPTO_get_idptr_callback(void))(void);
191 void *CRYPTO_thread_idptr(void);
193 also in <openssl/crypto.h>. The default value for
194 CRYPTO_thread_idptr() if the application has not provided its own
198 *) Change the array representation of binary polynomials: the list
199 of degrees of non-zero coefficients is now terminated with -1.
200 Previously it was terminated with 0, which was also part of the
201 value; thus, the array representation was not applicable to
202 polynomials where t^0 has coefficient zero. This change makes
203 the array representation useful in a more general context.
206 *) Various modifications and fixes to SSL/TLS cipher string
207 handling. For ECC, the code now distinguishes between fixed ECDH
208 with RSA certificates on the one hand and with ECDSA certificates
209 on the other hand, since these are separate ciphersuites. The
210 unused code for Fortezza ciphersuites has been removed.
212 For consistency with EDH, ephemeral ECDH is now called "EECDH"
213 (not "ECDHE"). For consistency with the code for DH
214 certificates, use of ECDH certificates is now considered ECDH
215 authentication, not RSA or ECDSA authentication (the latter is
216 merely the CA's signing algorithm and not actively used in the
219 The temporary ciphersuite alias "ECCdraft" is no longer
220 available, and ECC ciphersuites are no longer excluded from "ALL"
221 and "DEFAULT". The following aliases now exist for RFC 4492
222 ciphersuites, most of these by analogy with the DH case:
224 kECDHr - ECDH cert, signed with RSA
225 kECDHe - ECDH cert, signed with ECDSA
226 kECDH - ECDH cert (signed with either RSA or ECDSA)
227 kEECDH - ephemeral ECDH
228 ECDH - ECDH cert or ephemeral ECDH
234 AECDH - anonymous ECDH
235 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
239 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
240 Use correct micalg parameters depending on digest(s) in signed message.
243 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
244 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
247 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
248 an engine to register a method. Add ENGINE lookups for methods and
249 functional reference processing.
252 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
253 EVP_{Sign,Verify}* which allow an application to customise the signature
257 *) New -resign option to smime utility. This adds one or more signers
258 to an existing PKCS#7 signedData structure. Also -md option to use an
259 alternative message digest algorithm for signing.
262 *) Tidy up PKCS#7 routines and add new functions to make it easier to
263 create PKCS7 structures containing multiple signers. Update smime
264 application to support multiple signers.
267 *) New -macalg option to pkcs12 utility to allow setting of an alternative
271 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
272 Reorganize PBE internals to lookup from a static table using NIDs,
273 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
274 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
275 PRF which will be automatically used with PBES2.
278 *) Replace the algorithm specific calls to generate keys in "req" with the
282 *) Update PKCS#7 enveloped data routines to use new API. This is now
283 supported by any public key method supporting the encrypt operation. A
284 ctrl is added to allow the public key algorithm to examine or modify
285 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
289 *) Add a ctrl to asn1 method to allow a public key algorithm to express
290 a default digest type to use. In most cases this will be SHA1 but some
291 algorithms (such as GOST) need to specify an alternative digest. The
292 return value indicates how strong the prefernce is 1 means optional and
293 2 is mandatory (that is it is the only supported type). Modify
294 ASN1_item_sign() to accept a NULL digest argument to indicate it should
295 use the default md. Update openssl utilities to use the default digest
296 type for signing if it is not explicitly indicated.
299 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
300 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
301 signing method from the key type. This effectively removes the link
302 between digests and public key types.
305 *) Add an OID cross reference table and utility functions. Its purpose is to
306 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
307 rsaEncryption. This will allow some of the algorithm specific hackery
308 needed to use the correct OID to be removed.
311 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
312 structures for PKCS7_sign(). They are now set up by the relevant public
316 *) Add provisional EC pkey method with support for ECDSA and ECDH.
319 *) Add support for key derivation (agreement) in the API, DH method and
323 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
324 public and private key formats. As a side effect these add additional
325 command line functionality not previously available: DSA signatures can be
326 generated and verified using pkeyutl and DH key support and generation in
331 [Oliver Tappe <zooey@hirschkaefer.de>]
333 *) New make target "install_html_docs" installs HTML renditions of the
335 [Oliver Tappe <zooey@hirschkaefer.de>]
337 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
338 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
339 support key and parameter generation and add initial key generation
340 functionality for RSA.
343 *) Add functions for main EVP_PKEY_method operations. The undocumented
344 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
345 EVP_PKEY_{encrypt,decrypt}_old.
348 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
349 key API, doesn't do much yet.
352 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
353 public key algorithms. New option to openssl utility:
354 "list-public-key-algorithms" to print out info.
357 *) Implement the Supported Elliptic Curves Extension for
358 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
361 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
362 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
365 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
366 utilities such as rsa, dsa, dsaparam etc except they process any key
370 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
371 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
372 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
376 *) Initial support for pluggable public key ASN1.
377 De-spaghettify the public key ASN1 handling. Move public and private
378 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
379 algorithm specific handling to a single module within the relevant
380 algorithm directory. Add functions to allow (near) opaque processing
381 of public and private key structures.
384 *) Implement the Supported Point Formats Extension for
385 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
388 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
389 for the psk identity [hint] and the psk callback functions to the
390 SSL_SESSION, SSL and SSL_CTX structure.
393 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
397 SSL_CTX_use_psk_identity_hint
398 SSL_get_psk_identity_hint
400 SSL_use_psk_identity_hint
402 [Mika Kousa and Pasi Eronen of Nokia Corporation]
404 *) Add RFC 3161 compliant time stamp request creation, response generation
405 and response verification functionality.
406 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
408 *) Add initial support for TLS extensions, specifically for the server_name
409 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
410 have new members for a host name. The SSL data structure has an
411 additional member SSL_CTX *initial_ctx so that new sessions can be
412 stored in that context to allow for session resumption, even after the
413 SSL has been switched to a new SSL_CTX in reaction to a client's
414 server_name extension.
416 New functions (subject to change):
419 SSL_get_servername_type()
422 New CTRL codes and macros (subject to change):
424 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
425 - SSL_CTX_set_tlsext_servername_callback()
426 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
427 - SSL_CTX_set_tlsext_servername_arg()
428 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
430 openssl s_client has a new '-servername ...' option.
432 openssl s_server has new options '-servername_host ...', '-cert2 ...',
433 '-key2 ...', '-servername_fatal' (subject to change). This allows
434 testing the HostName extension for a specific single host name ('-cert'
435 and '-key' remain fallbacks for handshakes without HostName
436 negotiation). If the unrecogninzed_name alert has to be sent, this by
437 default is a warning; it becomes fatal with the '-servername_fatal'
440 [Peter Sylvester, Remy Allais, Christophe Renou]
442 *) Whirlpool hash implementation is added.
445 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
446 bn(64,32). Because of instruction set limitations it doesn't have
447 any negative impact on performance. This was done mostly in order
448 to make it possible to share assembler modules, such as bn_mul_mont
449 implementations, between 32- and 64-bit builds without hassle.
452 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
453 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
457 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
458 dedicated Montgomery multiplication procedure, is introduced.
459 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
460 "64-bit" performance on certain 32-bit targets.
463 *) New option SSL_OP_NO_COMP to disable use of compression selectively
464 in SSL structures. New SSL ctrl to set maximum send fragment size.
465 Save memory by seeting the I/O buffer sizes dynamically instead of
466 using the maximum available value.
469 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
470 in addition to the text details.
473 *) Very, very preliminary EXPERIMENTAL support for printing of general
474 ASN1 structures. This currently produces rather ugly output and doesn't
475 handle several customised structures at all.
478 *) Integrated support for PVK file format and some related formats such
479 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
480 these in the 'rsa' and 'dsa' utilities.
483 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
486 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
487 place for the (very old) "NETSCAPE" format certificates which are now
488 handled using new ASN1 code equivalents.
491 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
492 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
493 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
496 *) Modify CRL distribution points extension code to print out previously
497 unsupported fields. Enhance extension setting code to allow setting of
501 *) Add print and set support for Issuing Distribution Point CRL extension.
504 *) Change 'Configure' script to enable Camellia by default.
507 Changes between 0.9.8e and 0.9.8f [xx XXX xxxx]
509 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
510 (which previously caused an internal error).
513 *) Squeeze another 10% out of IGE mode when in != out.
516 *) AES IGE mode speedup.
517 [Dean Gaudet (Google)]
519 *) Add the Korean symmetric 128-bit cipher SEED (see
520 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
521 add SEED ciphersuites from RFC 4162:
523 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
524 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
525 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
526 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
528 To minimize changes between patchlevels in the OpenSSL 0.9.8
529 series, SEED remains excluded from compilation unless OpenSSL
530 is configured with 'enable-seed'.
533 *) Mitigate branch prediction attacks, which can be practical if a
534 single processor is shared, allowing a spy process to extract
535 information. For detailed background information, see
536 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
537 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
538 and Necessary Software Countermeasures"). The core of the change
539 are new versions BN_div_no_branch() and
540 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
541 respectively, which are slower, but avoid the security-relevant
542 conditional branches. These are automatically called by BN_div()
543 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
544 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
545 remove a conditional branch.
547 BN_FLG_CONSTTIME is the new name for the previous
548 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
549 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
550 in the exponent causes BN_mod_exp_mont() to use the alternative
551 implementation in BN_mod_exp_mont_consttime().) The old name
552 remains as a deprecated alias.
554 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
555 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
556 constant-time implementations for more than just exponentiation.
557 Here too the old name is kept as a deprecated alias.
559 BN_BLINDING_new() will now use BN_dup() for the modulus so that
560 the BN_BLINDING structure gets an independent copy of the
561 modulus. This means that the previous "BIGNUM *m" argument to
562 BN_BLINDING_new() and to BN_BLINDING_create_param() now
563 essentially becomes "const BIGNUM *m", although we can't actually
564 change this in the header file before 0.9.9. It allows
565 RSA_setup_blinding() to use BN_with_flags() on the modulus to
566 enable BN_FLG_CONSTTIME.
568 [Matthew D Wood (Intel Corp)]
570 *) In the SSL/TLS server implementation, be strict about session ID
571 context matching (which matters if an application uses a single
572 external cache for different purposes). Previously,
573 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
574 set. This did ensure strict client verification, but meant that,
575 with applications using a single external cache for quite
576 different requirements, clients could circumvent ciphersuite
577 restrictions for a given session ID context by starting a session
578 in a different context.
581 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
582 a ciphersuite string such as "DEFAULT:RSA" cannot enable
583 authentication-only ciphersuites.
586 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
588 *) Since AES128 and AES256 (and similarly Camellia128 and
589 Camellia256) share a single mask bit in the logic of
590 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
591 kludge to work properly if AES128 is available and AES256 isn't
592 (or if Camellia128 is available and Camellia256 isn't).
595 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
596 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
597 When a point or a seed is encoded in a BIT STRING, we need to
598 prevent the removal of trailing zero bits to get the proper DER
599 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
600 of a NamedBitList, for which trailing 0 bits need to be removed.)
603 *) Have SSL/TLS server implementation tolerate "mismatched" record
604 protocol version while receiving ClientHello even if the
605 ClientHello is fragmented. (The server can't insist on the
606 particular protocol version it has chosen before the ServerHello
607 message has informed the client about his choice.)
610 *) Add RFC 3779 support.
611 [Rob Austein for ARIN, Ben Laurie]
613 *) Load error codes if they are not already present instead of using a
614 static variable. This allows them to be cleanly unloaded and reloaded.
615 Improve header file function name parsing.
618 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
619 or CAPABILITY handshake as required by RFCs.
622 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
624 *) Introduce limits to prevent malicious keys being able to
625 cause a denial of service. (CVE-2006-2940)
626 [Steve Henson, Bodo Moeller]
628 *) Fix ASN.1 parsing of certain invalid structures that can result
629 in a denial of service. (CVE-2006-2937) [Steve Henson]
631 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
632 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
634 *) Fix SSL client code which could crash if connecting to a
635 malicious SSLv2 server. (CVE-2006-4343)
636 [Tavis Ormandy and Will Drewry, Google Security Team]
638 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
639 match only those. Before that, "AES256-SHA" would be interpreted
640 as a pattern and match "AES128-SHA" too (since AES128-SHA got
641 the same strength classification in 0.9.7h) as we currently only
642 have a single AES bit in the ciphersuite description bitmap.
643 That change, however, also applied to ciphersuite strings such as
644 "RC4-MD5" that intentionally matched multiple ciphersuites --
645 namely, SSL 2.0 ciphersuites in addition to the more common ones
646 from SSL 3.0/TLS 1.0.
648 So we change the selection algorithm again: Naming an explicit
649 ciphersuite selects this one ciphersuite, and any other similar
650 ciphersuite (same bitmap) from *other* protocol versions.
651 Thus, "RC4-MD5" again will properly select both the SSL 2.0
652 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
654 Since SSL 2.0 does not have any ciphersuites for which the
655 128/256 bit distinction would be relevant, this works for now.
656 The proper fix will be to use different bits for AES128 and
657 AES256, which would have avoided the problems from the beginning;
658 however, bits are scarce, so we can only do this in a new release
659 (not just a patchlevel) when we can change the SSL_CIPHER
660 definition to split the single 'unsigned long mask' bitmap into
661 multiple values to extend the available space.
665 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
667 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
668 (CVE-2006-4339) [Ben Laurie and Google Security Team]
670 *) Add AES IGE and biIGE modes.
673 *) Change the Unix randomness entropy gathering to use poll() when
674 possible instead of select(), since the latter has some
675 undesirable limitations.
676 [Darryl Miles via Richard Levitte and Bodo Moeller]
678 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
679 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
680 cannot be implicitly activated as part of, e.g., the "AES" alias.
681 However, please upgrade to OpenSSL 0.9.9[-dev] for
682 non-experimental use of the ECC ciphersuites to get TLS extension
683 support, which is required for curve and point format negotiation
684 to avoid potential handshake problems.
687 *) Disable rogue ciphersuites:
689 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
690 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
691 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
693 The latter two were purportedly from
694 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
697 Also deactivate the remaining ciphersuites from
698 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
699 unofficial, and the ID has long expired.
702 *) Fix RSA blinding Heisenbug (problems sometimes occured on
703 dual-core machines) and other potential thread-safety issues.
706 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
707 versions), which is now available for royalty-free use
708 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
709 Also, add Camellia TLS ciphersuites from RFC 4132.
711 To minimize changes between patchlevels in the OpenSSL 0.9.8
712 series, Camellia remains excluded from compilation unless OpenSSL
713 is configured with 'enable-camellia'.
716 *) Disable the padding bug check when compression is in use. The padding
717 bug check assumes the first packet is of even length, this is not
718 necessarily true if compresssion is enabled and can result in false
719 positives causing handshake failure. The actual bug test is ancient
720 code so it is hoped that implementations will either have fixed it by
721 now or any which still have the bug do not support compression.
724 Changes between 0.9.8a and 0.9.8b [04 May 2006]
726 *) When applying a cipher rule check to see if string match is an explicit
727 cipher suite and only match that one cipher suite if it is.
730 *) Link in manifests for VC++ if needed.
731 [Austin Ziegler <halostatue@gmail.com>]
733 *) Update support for ECC-based TLS ciphersuites according to
734 draft-ietf-tls-ecc-12.txt with proposed changes (but without
735 TLS extensions, which are supported starting with the 0.9.9
736 branch, not in the OpenSSL 0.9.8 branch).
739 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
740 opaque EVP_CIPHER_CTX handling.
743 *) Fixes and enhancements to zlib compression code. We now only use
744 "zlib1.dll" and use the default __cdecl calling convention on Win32
745 to conform with the standards mentioned here:
746 http://www.zlib.net/DLL_FAQ.txt
747 Static zlib linking now works on Windows and the new --with-zlib-include
748 --with-zlib-lib options to Configure can be used to supply the location
749 of the headers and library. Gracefully handle case where zlib library
753 *) Several fixes and enhancements to the OID generation code. The old code
754 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
755 handle numbers larger than ULONG_MAX, truncated printing and had a
756 non standard OBJ_obj2txt() behaviour.
759 *) Add support for building of engines under engine/ as shared libraries
760 under VC++ build system.
763 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
764 Hopefully, we will not see any false combination of paths any more.
767 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
769 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
770 (part of SSL_OP_ALL). This option used to disable the
771 countermeasure against man-in-the-middle protocol-version
772 rollback in the SSL 2.0 server implementation, which is a bad
773 idea. (CVE-2005-2969)
775 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
776 for Information Security, National Institute of Advanced Industrial
777 Science and Technology [AIST], Japan)]
779 *) Add two function to clear and return the verify parameter flags.
782 *) Keep cipherlists sorted in the source instead of sorting them at
783 runtime, thus removing the need for a lock.
786 *) Avoid some small subgroup attacks in Diffie-Hellman.
787 [Nick Mathewson and Ben Laurie]
789 *) Add functions for well-known primes.
792 *) Extended Windows CE support.
793 [Satoshi Nakamura and Andy Polyakov]
795 *) Initialize SSL_METHOD structures at compile time instead of during
796 runtime, thus removing the need for a lock.
799 *) Make PKCS7_decrypt() work even if no certificate is supplied by
800 attempting to decrypt each encrypted key in turn. Add support to
804 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
806 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
809 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
812 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
813 key into the same file any more.
816 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
819 *) Add -utf8 command line and config file option to 'ca'.
820 [Stefan <stf@udoma.org]
822 *) Removed the macro des_crypt(), as it seems to conflict with some
823 libraries. Use DES_crypt().
826 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
827 involves renaming the source and generated shared-libs for
828 both. The engines will accept the corrected or legacy ids
829 ('ncipher' and '4758_cca' respectively) when binding. NB,
830 this only applies when building 'shared'.
831 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
833 *) Add attribute functions to EVP_PKEY structure. Modify
834 PKCS12_create() to recognize a CSP name attribute and
835 use it. Make -CSP option work again in pkcs12 utility.
838 *) Add new functionality to the bn blinding code:
839 - automatic re-creation of the BN_BLINDING parameters after
840 a fixed number of uses (currently 32)
841 - add new function for parameter creation
842 - introduce flags to control the update behaviour of the
843 BN_BLINDING parameters
844 - hide BN_BLINDING structure
845 Add a second BN_BLINDING slot to the RSA structure to improve
846 performance when a single RSA object is shared among several
850 *) Add support for DTLS.
851 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
853 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
854 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
857 *) Remove buggy and incompletet DH cert support from
858 ssl/ssl_rsa.c and ssl/s3_both.c
861 *) Use SHA-1 instead of MD5 as the default digest algorithm for
862 the apps/openssl applications.
865 *) Compile clean with "-Wall -Wmissing-prototypes
866 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
867 DEBUG_SAFESTACK must also be set.
870 *) Change ./Configure so that certain algorithms can be disabled by default.
871 The new counterpiece to "no-xxx" is "enable-xxx".
873 The patented RC5 and MDC2 algorithms will now be disabled unless
874 "enable-rc5" and "enable-mdc2", respectively, are specified.
876 (IDEA remains enabled despite being patented. This is because IDEA
877 is frequently required for interoperability, and there is no license
878 fee for non-commercial use. As before, "no-idea" can be used to
879 avoid this algorithm.)
883 *) Add processing of proxy certificates (see RFC 3820). This work was
884 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
885 EGEE (Enabling Grids for E-science in Europe).
888 *) RC4 performance overhaul on modern architectures/implementations, such
889 as Intel P4, IA-64 and AMD64.
892 *) New utility extract-section.pl. This can be used specify an alternative
893 section number in a pod file instead of having to treat each file as
894 a separate case in Makefile. This can be done by adding two lines to the
897 =for comment openssl_section:XXX
899 The blank line is mandatory.
903 *) New arguments -certform, -keyform and -pass for s_client and s_server
904 to allow alternative format key and certificate files and passphrase
908 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
909 update associated structures and add various utility functions.
911 Add new policy related verify parameters, include policy checking in
912 standard verify code. Enhance 'smime' application with extra parameters
913 to support policy checking and print out.
916 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
917 Nehemiah processors. These extensions support AES encryption in hardware
918 as well as RNG (though RNG support is currently disabled).
919 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
921 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
924 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
925 [Andy Polyakov and a number of other people]
927 *) Improved PowerPC platform support. Most notably BIGNUM assembler
928 implementation contributed by IBM.
929 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
931 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
932 exponent rather than 'unsigned long'. There is a corresponding change to
933 the new 'rsa_keygen' element of the RSA_METHOD structure.
934 [Jelte Jansen, Geoff Thorpe]
936 *) Functionality for creating the initial serial number file is now
937 moved from CA.pl to the 'ca' utility with a new option -create_serial.
939 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
940 number file to 1, which is bound to cause problems. To avoid
941 the problems while respecting compatibility between different 0.9.7
942 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
943 CA.pl for serial number initialization. With the new release 0.9.8,
944 we can fix the problem directly in the 'ca' utility.)
947 *) Reduced header interdepencies by declaring more opaque objects in
948 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
949 give fewer recursive includes, which could break lazy source code - so
950 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
951 developers should define this symbol when building and using openssl to
952 ensure they track the recommended behaviour, interfaces, [etc], but
953 backwards-compatible behaviour prevails when this isn't defined.
956 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
959 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
960 This will generate a random key of the appropriate length based on the
961 cipher context. The EVP_CIPHER can provide its own random key generation
962 routine to support keys of a specific form. This is used in the des and
963 3des routines to generate a key of the correct parity. Update S/MIME
964 code to use new functions and hence generate correct parity DES keys.
965 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
966 valid (weak or incorrect parity).
969 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
970 as looking them up. This is useful when the verified structure may contain
971 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
972 present unless the new PKCS7_NO_CRL flag is asserted.
975 *) Extend ASN1 oid configuration module. It now additionally accepts the
978 shortName = some long name, 1.2.3.4
981 *) Reimplemented the BN_CTX implementation. There is now no more static
982 limitation on the number of variables it can handle nor the depth of the
983 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
984 information can now expand as required, and rather than having a single
985 static array of bignums, BN_CTX now uses a linked-list of such arrays
986 allowing it to expand on demand whilst maintaining the usefulness of
990 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
991 to allow all RSA operations to function using a single BN_CTX.
994 *) Preliminary support for certificate policy evaluation and checking. This
995 is initially intended to pass the tests outlined in "Conformance Testing
996 of Relying Party Client Certificate Path Processing Logic" v1.07.
999 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1000 remained unused and not that useful. A variety of other little bignum
1001 tweaks and fixes have also been made continuing on from the audit (see
1005 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1006 associated ASN1, EVP and SSL functions and old ASN1 macros.
1009 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1010 and this should never fail. So the return value from the use of
1011 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1012 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1015 *) BN_CTX_get() should return zero-valued bignums, providing the same
1016 initialised value as BN_new().
1017 [Geoff Thorpe, suggested by Ulf Möller]
1019 *) Support for inhibitAnyPolicy certificate extension.
1022 *) An audit of the BIGNUM code is underway, for which debugging code is
1023 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1024 is considered valid when processing BIGNUMs, and causes execution to
1025 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1026 further steps are taken to deliberately pollute unused data in BIGNUM
1027 structures to try and expose faulty code further on. For now, openssl will
1028 (in its default mode of operation) continue to tolerate the inconsistent
1029 forms that it has tolerated in the past, but authors and packagers should
1030 consider trying openssl and their own applications when compiled with
1031 these debugging symbols defined. It will help highlight potential bugs in
1032 their own code, and will improve the test coverage for OpenSSL itself. At
1033 some point, these tighter rules will become openssl's default to improve
1034 maintainability, though the assert()s and other overheads will remain only
1035 in debugging configurations. See bn.h for more details.
1036 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1038 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1039 that can only be obtained through BN_CTX_new() (which implicitly
1040 initialises it). The presence of this function only made it possible
1041 to overwrite an existing structure (and cause memory leaks).
1044 *) Because of the callback-based approach for implementing LHASH as a
1045 template type, lh_insert() adds opaque objects to hash-tables and
1046 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1047 to clean up those corresponding objects before destroying the hash table
1048 (and losing the object pointers). So some over-zealous constifications in
1049 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1050 objects as "const" and the lh_doall[_arg] callback wrappers are not
1051 prototyped to have "const" restrictions on the object pointers they are
1052 given (and so aren't required to cast them away any more).
1055 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1056 (speed) prefers to use its own implementation. The two implementations
1057 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1058 its object type properly exposed (MS_TM) instead of casting to/from "char
1059 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1060 aren't necessarily the greatest nomenclatures - but this is what was used
1061 internally to the implementation so I've used that for now.
1064 *) Ensure that deprecated functions do not get compiled when
1065 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1066 the self-tests were still using deprecated key-generation functions so
1067 these have been updated also.
1070 *) Reorganise PKCS#7 code to separate the digest location functionality
1071 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1072 New function PKCS7_set_digest() to set the digest type for PKCS#7
1073 digestedData type. Add additional code to correctly generate the
1074 digestedData type and add support for this type in PKCS7 initialization
1078 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1079 structure of type "other".
1082 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1083 sure the loop does correctly stop and breaking ("division by zero")
1084 modulus operations are not performed. The (pre-generated) prime
1085 table crypto/bn/bn_prime.h was already correct, but it could not be
1086 re-generated on some platforms because of the "division by zero"
1087 situation in the script.
1088 [Ralf S. Engelschall]
1090 *) Update support for ECC-based TLS ciphersuites according to
1091 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1092 SHA-1 now is only used for "small" curves (where the
1093 representation of a field element takes up to 24 bytes); for
1094 larger curves, the field element resulting from ECDH is directly
1095 used as premaster secret.
1096 [Douglas Stebila (Sun Microsystems Laboratories)]
1098 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1099 curve secp160r1 to the tests.
1100 [Douglas Stebila (Sun Microsystems Laboratories)]
1102 *) Add the possibility to load symbols globally with DSO.
1103 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1105 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1106 control of the error stack.
1109 *) Add support for STORE in ENGINE.
1112 *) Add the STORE type. The intention is to provide a common interface
1113 to certificate and key stores, be they simple file-based stores, or
1114 HSM-type store, or LDAP stores, or...
1115 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1118 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1119 pass a list of arguments to any function as well as provide a way
1120 for a function to pass data back to the caller.
1123 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1124 works like BUF_strdup() but can be used to duplicate a portion of
1125 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1129 *) Add the function sk_find_ex() which works like sk_find(), but will
1130 return an index to an element even if an exact match couldn't be
1131 found. The index is guaranteed to point at the element where the
1132 searched-for key would be inserted to preserve sorting order.
1135 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1136 takes an extra flags argument for optional functionality. Currently,
1137 the following flags are defined:
1139 OBJ_BSEARCH_VALUE_ON_NOMATCH
1140 This one gets OBJ_bsearch_ex() to return a pointer to the first
1141 element where the comparing function returns a negative or zero
1144 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1145 This one gets OBJ_bsearch_ex() to return a pointer to the first
1146 element where the comparing function returns zero. This is useful
1147 if there are more than one element where the comparing function
1151 *) Make it possible to create self-signed certificates with 'openssl ca'
1152 in such a way that the self-signed certificate becomes part of the
1153 CA database and uses the same mechanisms for serial number generation
1154 as all other certificate signing. The new flag '-selfsign' enables
1155 this functionality. Adapt CA.sh and CA.pl.in.
1158 *) Add functionality to check the public key of a certificate request
1159 against a given private. This is useful to check that a certificate
1160 request can be signed by that key (self-signing).
1163 *) Make it possible to have multiple active certificates with the same
1164 subject in the CA index file. This is done only if the keyword
1165 'unique_subject' is set to 'no' in the main CA section (default
1166 if 'CA_default') of the configuration file. The value is saved
1167 with the database itself in a separate index attribute file,
1168 named like the index file with '.attr' appended to the name.
1171 *) Generate muti valued AVAs using '+' notation in config files for
1175 *) Support for nameConstraints certificate extension.
1178 *) Support for policyConstraints certificate extension.
1181 *) Support for policyMappings certificate extension.
1184 *) Make sure the default DSA_METHOD implementation only uses its
1185 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1186 and change its own handlers to be NULL so as to remove unnecessary
1187 indirection. This lets alternative implementations fallback to the
1188 default implementation more easily.
1191 *) Support for directoryName in GeneralName related extensions
1195 *) Make it possible to link applications using Makefile.shared.
1196 Make that possible even when linking against static libraries!
1199 *) Support for single pass processing for S/MIME signing. This now
1200 means that S/MIME signing can be done from a pipe, in addition
1201 cleartext signing (multipart/signed type) is effectively streaming
1202 and the signed data does not need to be all held in memory.
1204 This is done with a new flag PKCS7_STREAM. When this flag is set
1205 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1206 is done after the data is output (and digests calculated) in
1207 SMIME_write_PKCS7().
1210 *) Add full support for -rpath/-R, both in shared libraries and
1211 applications, at least on the platforms where it's known how
1215 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1216 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1217 will now compute a table of multiples of the generator that
1218 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1219 faster (notably in the case of a single point multiplication,
1220 scalar * generator).
1221 [Nils Larsch, Bodo Moeller]
1223 *) IPv6 support for certificate extensions. The various extensions
1224 which use the IP:a.b.c.d can now take IPv6 addresses using the
1225 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1229 *) Added an ENGINE that implements RSA by performing private key
1230 exponentiations with the GMP library. The conversions to and from
1231 GMP's mpz_t format aren't optimised nor are any montgomery forms
1232 cached, and on x86 it appears OpenSSL's own performance has caught up.
1233 However there are likely to be other architectures where GMP could
1234 provide a boost. This ENGINE is not built in by default, but it can be
1235 specified at Configure time and should be accompanied by the necessary
1236 linker additions, eg;
1237 ./config -DOPENSSL_USE_GMP -lgmp
1240 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1241 testing availability of engines with "-t" - the old behaviour is
1242 produced by increasing the feature's verbosity with "-tt".
1245 *) ECDSA routines: under certain error conditions uninitialized BN objects
1246 could be freed. Solution: make sure initialization is performed early
1247 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1251 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1252 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1253 software implementations. For DSA and DH, parameter generation can
1254 also be overriden by providing the appropriate method callbacks.
1257 *) Change the "progress" mechanism used in key-generation and
1258 primality testing to functions that take a new BN_GENCB pointer in
1259 place of callback/argument pairs. The new API functions have "_ex"
1260 postfixes and the older functions are reimplemented as wrappers for
1261 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1262 declarations of the old functions to help (graceful) attempts to
1263 migrate to the new functions. Also, the new key-generation API
1264 functions operate on a caller-supplied key-structure and return
1265 success/failure rather than returning a key or NULL - this is to
1266 help make "keygen" another member function of RSA_METHOD etc.
1268 Example for using the new callback interface:
1270 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1274 BN_GENCB_set(&my_cb, my_callback, my_arg);
1276 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1277 /* For the meaning of a, b in calls to my_callback(), see the
1278 * documentation of the function that calls the callback.
1279 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1280 * my_callback should return 1 if it wants BN_is_prime_ex()
1281 * to continue, or 0 to stop.
1286 *) Change the ZLIB compression method to be stateful, and make it
1287 available to TLS with the number defined in
1288 draft-ietf-tls-compression-04.txt.
1291 *) Add the ASN.1 structures and functions for CertificatePair, which
1292 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1294 CertificatePair ::= SEQUENCE {
1295 forward [0] Certificate OPTIONAL,
1296 reverse [1] Certificate OPTIONAL,
1297 -- at least one of the pair shall be present -- }
1299 Also implement the PEM functions to read and write certificate
1300 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1302 This needed to be defined, mostly for the sake of the LDAP
1303 attribute crossCertificatePair, but may prove useful elsewhere as
1307 *) Make it possible to inhibit symlinking of shared libraries in
1308 Makefile.shared, for Cygwin's sake.
1311 *) Extend the BIGNUM API by creating a function
1312 void BN_set_negative(BIGNUM *a, int neg);
1313 and a macro that behave like
1314 int BN_is_negative(const BIGNUM *a);
1316 to avoid the need to access 'a->neg' directly in applications.
1319 *) Implement fast modular reduction for pseudo-Mersenne primes
1320 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1321 EC_GROUP_new_curve_GFp() will now automatically use this
1323 [Nils Larsch <nla@trustcenter.de>]
1325 *) Add new lock type (CRYPTO_LOCK_BN).
1328 *) Change the ENGINE framework to automatically load engines
1329 dynamically from specific directories unless they could be
1330 found to already be built in or loaded. Move all the
1331 current engines except for the cryptodev one to a new
1333 The engines in engines/ are built as shared libraries if
1334 the "shared" options was given to ./Configure or ./config.
1335 Otherwise, they are inserted in libcrypto.a.
1336 /usr/local/ssl/engines is the default directory for dynamic
1337 engines, but that can be overriden at configure time through
1338 the usual use of --prefix and/or --openssldir, and at run
1339 time with the environment variable OPENSSL_ENGINES.
1340 [Geoff Thorpe and Richard Levitte]
1342 *) Add Makefile.shared, a helper makefile to build shared
1343 libraries. Addapt Makefile.org.
1346 *) Add version info to Win32 DLLs.
1347 [Peter 'Luna' Runestig" <peter@runestig.com>]
1349 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1350 can be added using this API to created arbitrary PKCS#12
1351 files while avoiding the low level API.
1353 New options to PKCS12_create(), key or cert can be NULL and
1354 will then be omitted from the output file. The encryption
1355 algorithm NIDs can be set to -1 for no encryption, the mac
1356 iteration count can be set to 0 to omit the mac.
1358 Enhance pkcs12 utility by making the -nokeys and -nocerts
1359 options work when creating a PKCS#12 file. New option -nomac
1360 to omit the mac, NONE can be set for an encryption algorithm.
1361 New code is modified to use the enhanced PKCS12_create()
1362 instead of the low level API.
1365 *) Extend ASN1 encoder to support indefinite length constructed
1366 encoding. This can output sequences tags and octet strings in
1367 this form. Modify pk7_asn1.c to support indefinite length
1368 encoding. This is experimental and needs additional code to
1369 be useful, such as an ASN1 bio and some enhanced streaming
1372 Extend template encode functionality so that tagging is passed
1373 down to the template encoder.
1376 *) Let 'openssl req' fail if an argument to '-newkey' is not
1377 recognized instead of using RSA as a default.
1380 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1381 As these are not official, they are not included in "ALL";
1382 the "ECCdraft" ciphersuite group alias can be used to select them.
1383 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1385 *) Add ECDH engine support.
1386 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1388 *) Add ECDH in new directory crypto/ecdh/.
1389 [Douglas Stebila (Sun Microsystems Laboratories)]
1391 *) Let BN_rand_range() abort with an error after 100 iterations
1392 without success (which indicates a broken PRNG).
1395 *) Change BN_mod_sqrt() so that it verifies that the input value
1396 is really the square of the return value. (Previously,
1397 BN_mod_sqrt would show GIGO behaviour.)
1400 *) Add named elliptic curves over binary fields from X9.62, SECG,
1401 and WAP/WTLS; add OIDs that were still missing.
1403 [Sheueling Chang Shantz and Douglas Stebila
1404 (Sun Microsystems Laboratories)]
1406 *) Extend the EC library for elliptic curves over binary fields
1407 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1410 EC_GF2m_simple_method
1414 EC_GROUP_new_curve_GF2m
1415 EC_GROUP_set_curve_GF2m
1416 EC_GROUP_get_curve_GF2m
1417 EC_POINT_set_affine_coordinates_GF2m
1418 EC_POINT_get_affine_coordinates_GF2m
1419 EC_POINT_set_compressed_coordinates_GF2m
1421 Point compression for binary fields is disabled by default for
1422 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1425 As binary polynomials are represented as BIGNUMs, various members
1426 of the EC_GROUP and EC_POINT data structures can be shared
1427 between the implementations for prime fields and binary fields;
1428 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1429 are essentially identical to their ..._GFp counterparts.
1430 (For simplicity, the '..._GFp' prefix has been dropped from
1431 various internal method names.)
1433 An internal 'field_div' method (similar to 'field_mul' and
1434 'field_sqr') has been added; this is used only for binary fields.
1436 [Sheueling Chang Shantz and Douglas Stebila
1437 (Sun Microsystems Laboratories)]
1439 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1440 through methods ('mul', 'precompute_mult').
1442 The generic implementations (now internally called 'ec_wNAF_mul'
1443 and 'ec_wNAF_precomputed_mult') remain the default if these
1444 methods are undefined.
1446 [Sheueling Chang Shantz and Douglas Stebila
1447 (Sun Microsystems Laboratories)]
1449 *) New function EC_GROUP_get_degree, which is defined through
1450 EC_METHOD. For curves over prime fields, this returns the bit
1451 length of the modulus.
1453 [Sheueling Chang Shantz and Douglas Stebila
1454 (Sun Microsystems Laboratories)]
1456 *) New functions EC_GROUP_dup, EC_POINT_dup.
1457 (These simply call ..._new and ..._copy).
1459 [Sheueling Chang Shantz and Douglas Stebila
1460 (Sun Microsystems Laboratories)]
1462 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1463 Polynomials are represented as BIGNUMs (where the sign bit is not
1464 used) in the following functions [macros]:
1467 BN_GF2m_sub [= BN_GF2m_add]
1468 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1469 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1470 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1472 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1473 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1474 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1475 BN_GF2m_cmp [= BN_ucmp]
1477 (Note that only the 'mod' functions are actually for fields GF(2^m).
1478 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1480 For some functions, an the irreducible polynomial defining a
1481 field can be given as an 'unsigned int[]' with strictly
1482 decreasing elements giving the indices of those bits that are set;
1483 i.e., p[] represents the polynomial
1484 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1486 p[0] > p[1] > ... > p[k] = 0.
1487 This applies to the following functions:
1492 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1493 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1495 BN_GF2m_mod_sqrt_arr
1496 BN_GF2m_mod_solve_quad_arr
1500 Conversion can be performed by the following functions:
1505 bntest.c has additional tests for binary polynomial arithmetic.
1507 Two implementations for BN_GF2m_mod_div() are available.
1508 The default algorithm simply uses BN_GF2m_mod_inv() and
1509 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1510 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1511 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1513 [Sheueling Chang Shantz and Douglas Stebila
1514 (Sun Microsystems Laboratories)]
1516 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1517 functionality is disabled at compile-time.
1518 [Douglas Stebila <douglas.stebila@sun.com>]
1520 *) Change default behaviour of 'openssl asn1parse' so that more
1521 information is visible when viewing, e.g., a certificate:
1523 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1524 mode the content of non-printable OCTET STRINGs is output in a
1525 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1526 avoid the appearance of a printable string.
1527 [Nils Larsch <nla@trustcenter.de>]
1529 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1531 EC_GROUP_set_asn1_flag()
1532 EC_GROUP_get_asn1_flag()
1533 EC_GROUP_set_point_conversion_form()
1534 EC_GROUP_get_point_conversion_form()
1535 These control ASN1 encoding details:
1536 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1537 has been set to OPENSSL_EC_NAMED_CURVE.
1538 - Points are encoded in uncompressed form by default; options for
1539 asn1_for are as for point2oct, namely
1540 POINT_CONVERSION_COMPRESSED
1541 POINT_CONVERSION_UNCOMPRESSED
1542 POINT_CONVERSION_HYBRID
1544 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1547 EC_GROUP_get0_seed()
1548 EC_GROUP_get_seed_len()
1549 This is used only for ASN1 purposes (so far).
1550 [Nils Larsch <nla@trustcenter.de>]
1552 *) Add 'field_type' member to EC_METHOD, which holds the NID
1553 of the appropriate field type OID. The new function
1554 EC_METHOD_get_field_type() returns this value.
1555 [Nils Larsch <nla@trustcenter.de>]
1560 EC_POINT_point2hex()
1561 EC_POINT_hex2point()
1562 providing useful interfaces to EC_POINT_point2oct() and
1563 EC_POINT_oct2point().
1564 [Nils Larsch <nla@trustcenter.de>]
1566 *) Change internals of the EC library so that the functions
1567 EC_GROUP_set_generator()
1568 EC_GROUP_get_generator()
1569 EC_GROUP_get_order()
1570 EC_GROUP_get_cofactor()
1571 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1572 to methods, which would lead to unnecessary code duplication when
1573 adding different types of curves.
1574 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1576 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1577 arithmetic, and such that modified wNAFs are generated
1578 (which avoid length expansion in many cases).
1581 *) Add a function EC_GROUP_check_discriminant() (defined via
1582 EC_METHOD) that verifies that the curve discriminant is non-zero.
1584 Add a function EC_GROUP_check() that makes some sanity tests
1585 on a EC_GROUP, its generator and order. This includes
1586 EC_GROUP_check_discriminant().
1587 [Nils Larsch <nla@trustcenter.de>]
1589 *) Add ECDSA in new directory crypto/ecdsa/.
1591 Add applications 'openssl ecparam' and 'openssl ecdsa'
1592 (these are based on 'openssl dsaparam' and 'openssl dsa').
1594 ECDSA support is also included in various other files across the
1595 library. Most notably,
1596 - 'openssl req' now has a '-newkey ecdsa:file' option;
1597 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1598 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1599 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1600 them suitable for ECDSA where domain parameters must be
1601 extracted before the specific public key;
1602 - ECDSA engine support has been added.
1603 [Nils Larsch <nla@trustcenter.de>]
1605 *) Include some named elliptic curves, and add OIDs from X9.62,
1606 SECG, and WAP/WTLS. Each curve can be obtained from the new
1608 EC_GROUP_new_by_curve_name(),
1609 and the list of available named curves can be obtained with
1610 EC_get_builtin_curves().
1611 Also add a 'curve_name' member to EC_GROUP objects, which can be
1613 EC_GROUP_set_curve_name()
1614 EC_GROUP_get_curve_name()
1615 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1617 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1618 was actually never needed) and in BN_mul(). The removal in BN_mul()
1619 required a small change in bn_mul_part_recursive() and the addition
1620 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1621 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1622 bn_sub_words() and bn_add_words() except they take arrays with
1626 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
1628 *) In the SSL/TLS server implementation, be strict about session ID
1629 context matching (which matters if an application uses a single
1630 external cache for different purposes). Previously,
1631 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1632 set. This did ensure strict client verification, but meant that,
1633 with applications using a single external cache for quite
1634 different requirements, clients could circumvent ciphersuite
1635 restrictions for a given session ID context by starting a session
1636 in a different context.
1639 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
1641 *) Cleanse PEM buffers before freeing them since they may contain
1643 [Benjamin Bennett <ben@psc.edu>]
1645 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1646 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1647 authentication-only ciphersuites.
1650 *) Since AES128 and AES256 share a single mask bit in the logic of
1651 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1652 kludge to work properly if AES128 is available and AES256 isn't.
1655 *) Expand security boundary to match 1.1.1 module.
1658 *) Remove redundant features: hash file source, editing of test vectors
1659 modify fipsld to use external fips_premain.c signature.
1662 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
1663 run algorithm test programs.
1666 *) Make algorithm test programs more tolerant of whitespace.
1669 *) Have SSL/TLS server implementation tolerate "mismatched" record
1670 protocol version while receiving ClientHello even if the
1671 ClientHello is fragmented. (The server can't insist on the
1672 particular protocol version it has chosen before the ServerHello
1673 message has informed the client about his choice.)
1676 *) Load error codes if they are not already present instead of using a
1677 static variable. This allows them to be cleanly unloaded and reloaded.
1680 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
1682 *) Introduce limits to prevent malicious keys being able to
1683 cause a denial of service. (CVE-2006-2940)
1684 [Steve Henson, Bodo Moeller]
1686 *) Fix ASN.1 parsing of certain invalid structures that can result
1687 in a denial of service. (CVE-2006-2937) [Steve Henson]
1689 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1690 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1692 *) Fix SSL client code which could crash if connecting to a
1693 malicious SSLv2 server. (CVE-2006-4343)
1694 [Tavis Ormandy and Will Drewry, Google Security Team]
1696 *) Change ciphersuite string processing so that an explicit
1697 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
1698 will no longer include "AES128-SHA"), and any other similar
1699 ciphersuite (same bitmap) from *other* protocol versions (so that
1700 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
1701 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
1702 changes from 0.9.8b and 0.9.8d.
1705 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
1707 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1708 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1710 *) Change the Unix randomness entropy gathering to use poll() when
1711 possible instead of select(), since the latter has some
1712 undesirable limitations.
1713 [Darryl Miles via Richard Levitte and Bodo Moeller]
1715 *) Disable rogue ciphersuites:
1717 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1718 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1719 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1721 The latter two were purportedly from
1722 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1725 Also deactive the remaining ciphersuites from
1726 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1727 unofficial, and the ID has long expired.
1730 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1731 dual-core machines) and other potential thread-safety issues.
1734 Changes between 0.9.7i and 0.9.7j [04 May 2006]
1736 *) Adapt fipsld and the build system to link against the validated FIPS
1737 module in FIPS mode.
1740 *) Fixes for VC++ 2005 build under Windows.
1743 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
1744 from a Windows bash shell such as MSYS. It is autodetected from the
1745 "config" script when run from a VC++ environment. Modify standard VC++
1746 build to use fipscanister.o from the GNU make build.
1749 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1751 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1752 The value now differs depending on if you build for FIPS or not.
1753 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1754 safely run with a non-FIPSed libcrypto, as it may crash because of
1755 the difference induced by this change.
1758 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1760 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1761 (part of SSL_OP_ALL). This option used to disable the
1762 countermeasure against man-in-the-middle protocol-version
1763 rollback in the SSL 2.0 server implementation, which is a bad
1764 idea. (CVE-2005-2969)
1766 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1767 for Information Security, National Institute of Advanced Industrial
1768 Science and Technology [AIST], Japan)]
1770 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1771 mainly for FIPS compliance and not fully integrated at this stage.
1774 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1775 the exponentiation using a fixed-length exponent. (Otherwise,
1776 the information leaked through timing could expose the secret key
1777 after many signatures; cf. Bleichenbacher's attack on DSA with
1781 *) Make a new fixed-window mod_exp implementation the default for
1782 RSA, DSA, and DH private-key operations so that the sequence of
1783 squares and multiplies and the memory access pattern are
1784 independent of the particular secret key. This will mitigate
1785 cache-timing and potential related attacks.
1787 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1788 and this is automatically used by BN_mod_exp_mont() if the new flag
1789 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1790 will use this BN flag for private exponents unless the flag
1791 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1792 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1794 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1796 *) Change the client implementation for SSLv23_method() and
1797 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1798 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1799 (Previously, the SSL 2.0 backwards compatible Client Hello
1800 message format would be used even with SSL_OP_NO_SSLv2.)
1803 *) Add support for smime-type MIME parameter in S/MIME messages which some
1807 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1808 a threadsafe manner. Modify rsa code to use new function and add calls
1809 to dsa and dh code (which had race conditions before).
1812 *) Include the fixed error library code in the C error file definitions
1813 instead of fixing them up at runtime. This keeps the error code
1814 structures constant.
1817 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1819 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1822 *) Fixes for newer kerberos headers. NB: the casts are needed because
1823 the 'length' field is signed on one version and unsigned on another
1824 with no (?) obvious way to tell the difference, without these VC++
1825 complains. Also the "definition" of FAR (blank) is no longer included
1826 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1827 some needed definitions.
1830 *) Undo Cygwin change.
1833 *) Added support for proxy certificates according to RFC 3820.
1834 Because they may be a security thread to unaware applications,
1835 they must be explicitely allowed in run-time. See
1836 docs/HOWTO/proxy_certificates.txt for further information.
1839 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1841 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1842 server and client random values. Previously
1843 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1844 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1846 This change has negligible security impact because:
1848 1. Server and client random values still have 24 bytes of pseudo random
1851 2. Server and client random values are sent in the clear in the initial
1854 3. The master secret is derived using the premaster secret (48 bytes in
1855 size for static RSA ciphersuites) as well as client server and random
1858 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1861 [Stephen Henson, reported by UK NISCC]
1863 *) Use Windows randomness collection on Cygwin.
1866 *) Fix hang in EGD/PRNGD query when communication socket is closed
1867 prematurely by EGD/PRNGD.
1868 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1870 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1873 *) Back-port of selected performance improvements from development
1874 branch, as well as improved support for PowerPC platforms.
1877 *) Add lots of checks for memory allocation failure, error codes to indicate
1878 failure and freeing up memory if a failure occurs.
1879 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1881 *) Add new -passin argument to dgst.
1884 *) Perform some character comparisons of different types in X509_NAME_cmp:
1885 this is needed for some certificates that reencode DNs into UTF8Strings
1886 (in violation of RFC3280) and can't or wont issue name rollover
1890 *) Make an explicit check during certificate validation to see that
1891 the CA setting in each certificate on the chain is correct. As a
1892 side effect always do the following basic checks on extensions,
1893 not just when there's an associated purpose to the check:
1895 - if there is an unhandled critical extension (unless the user
1896 has chosen to ignore this fault)
1897 - if the path length has been exceeded (if one is set at all)
1898 - that certain extensions fit the associated purpose (if one has
1902 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1904 *) Avoid a race condition when CRLs are checked in a multi threaded
1905 environment. This would happen due to the reordering of the revoked
1906 entries during signature checking and serial number lookup. Now the
1907 encoding is cached and the serial number sort performed under a lock.
1908 Add new STACK function sk_is_sorted().
1911 *) Add Delta CRL to the extension code.
1914 *) Various fixes to s3_pkt.c so alerts are sent properly.
1915 [David Holmes <d.holmes@f5.com>]
1917 *) Reduce the chances of duplicate issuer name and serial numbers (in
1918 violation of RFC3280) using the OpenSSL certificate creation utilities.
1919 This is done by creating a random 64 bit value for the initial serial
1920 number when a serial number file is created or when a self signed
1921 certificate is created using 'openssl req -x509'. The initial serial
1922 number file is created using 'openssl x509 -next_serial' in CA.pl
1923 rather than being initialized to 1.
1926 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1928 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1929 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1930 [Joe Orton, Steve Henson]
1932 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1934 [Joe Orton, Steve Henson]
1936 *) Make it possible to have multiple active certificates with the same
1937 subject in the CA index file. This is done only if the keyword
1938 'unique_subject' is set to 'no' in the main CA section (default
1939 if 'CA_default') of the configuration file. The value is saved
1940 with the database itself in a separate index attribute file,
1941 named like the index file with '.attr' appended to the name.
1944 *) X509 verify fixes. Disable broken certificate workarounds when
1945 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1946 keyUsage extension present. Don't accept CRLs with unhandled critical
1947 extensions: since verify currently doesn't process CRL extensions this
1948 rejects a CRL with *any* critical extensions. Add new verify error codes
1952 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1953 A clarification of RFC2560 will require the use of OCTET STRINGs and
1954 some implementations cannot handle the current raw format. Since OpenSSL
1955 copies and compares OCSP nonces as opaque blobs without any attempt at
1956 parsing them this should not create any compatibility issues.
1959 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1960 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1961 this HMAC (and other) operations are several times slower than OpenSSL
1965 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1966 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1968 *) Use the correct content when signing type "other".
1971 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1973 *) Fix various bugs revealed by running the NISCC test suite:
1975 Stop out of bounds reads in the ASN1 code when presented with
1976 invalid tags (CVE-2003-0543 and CVE-2003-0544).
1978 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
1980 If verify callback ignores invalid public key errors don't try to check
1981 certificate signature with the NULL public key.
1985 *) New -ignore_err option in ocsp application to stop the server
1986 exiting on the first error in a request.
1989 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
1990 if the server requested one: as stated in TLS 1.0 and SSL 3.0
1994 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
1995 extra data after the compression methods not only for TLS 1.0
1996 but also for SSL 3.0 (as required by the specification).
1997 [Bodo Moeller; problem pointed out by Matthias Loepfe]
1999 *) Change X509_certificate_type() to mark the key as exported/exportable
2000 when it's 512 *bits* long, not 512 bytes.
2003 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2004 blocks during encryption.
2007 *) Various fixes to base64 BIO and non blocking I/O. On write
2008 flushes were not handled properly if the BIO retried. On read
2009 data was not being buffered properly and had various logic bugs.
2010 This also affects blocking I/O when the data being decoded is a
2014 *) Various S/MIME bugfixes and compatibility changes:
2015 output correct application/pkcs7 MIME type if
2016 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2017 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2018 of files as .eml work). Correctly handle very long lines in MIME
2022 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2024 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2025 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2026 a protocol version number mismatch like a decryption error
2027 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2030 *) Turn on RSA blinding by default in the default implementation
2031 to avoid a timing attack. Applications that don't want it can call
2032 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2033 They would be ill-advised to do so in most cases.
2034 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2036 *) Change RSA blinding code so that it works when the PRNG is not
2037 seeded (in this case, the secret RSA exponent is abused as
2038 an unpredictable seed -- if it is not unpredictable, there
2039 is no point in blinding anyway). Make RSA blinding thread-safe
2040 by remembering the creator's thread ID in rsa->blinding and
2041 having all other threads use local one-time blinding factors
2042 (this requires more computation than sharing rsa->blinding, but
2043 avoids excessive locking; and if an RSA object is not shared
2044 between threads, blinding will still be very fast).
2047 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2048 ENGINE as defaults for all supported algorithms irrespective of
2049 the 'flags' parameter. 'flags' is now honoured, so applications
2050 should make sure they are passing it correctly.
2053 *) Target "mingw" now allows native Windows code to be generated in
2054 the Cygwin environment as well as with the MinGW compiler.
2057 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2059 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2060 via timing by performing a MAC computation even if incorrrect
2061 block cipher padding has been found. This is a countermeasure
2062 against active attacks where the attacker has to distinguish
2063 between bad padding and a MAC verification error. (CVE-2003-0078)
2065 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2066 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2067 Martin Vuagnoux (EPFL, Ilion)]
2069 *) Make the no-err option work as intended. The intention with no-err
2070 is not to have the whole error stack handling routines removed from
2071 libcrypto, it's only intended to remove all the function name and
2072 reason texts, thereby removing some of the footprint that may not
2073 be interesting if those errors aren't displayed anyway.
2075 NOTE: it's still possible for any application or module to have it's
2076 own set of error texts inserted. The routines are there, just not
2077 used by default when no-err is given.
2080 *) Add support for FreeBSD on IA64.
2081 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2083 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2084 Kerberos function mit_des_cbc_cksum(). Before this change,
2085 the value returned by DES_cbc_cksum() was like the one from
2086 mit_des_cbc_cksum(), except the bytes were swapped.
2087 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2089 *) Allow an application to disable the automatic SSL chain building.
2090 Before this a rather primitive chain build was always performed in
2091 ssl3_output_cert_chain(): an application had no way to send the
2092 correct chain if the automatic operation produced an incorrect result.
2094 Now the chain builder is disabled if either:
2096 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2098 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2100 The reasoning behind this is that an application would not want the
2101 auto chain building to take place if extra chain certificates are
2102 present and it might also want a means of sending no additional
2103 certificates (for example the chain has two certificates and the
2107 *) Add the possibility to build without the ENGINE framework.
2108 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2110 *) Under Win32 gmtime() can return NULL: check return value in
2111 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2114 *) DSA routines: under certain error conditions uninitialized BN objects
2115 could be freed. Solution: make sure initialization is performed early
2116 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2117 Nils Larsch <nla@trustcenter.de> via PR#459)
2120 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2121 checked on reconnect on the client side, therefore session resumption
2122 could still fail with a "ssl session id is different" error. This
2123 behaviour is masked when SSL_OP_ALL is used due to
2124 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2125 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2126 followup to PR #377.
2129 *) IA-32 assembler support enhancements: unified ELF targets, support
2130 for SCO/Caldera platforms, fix for Cygwin shared build.
2133 *) Add support for FreeBSD on sparc64. As a consequence, support for
2134 FreeBSD on non-x86 processors is separate from x86 processors on
2135 the config script, much like the NetBSD support.
2136 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2138 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2140 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2143 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2144 code (06) was taken as the first octet of the session ID and the last
2145 octet was ignored consequently. As a result SSLv2 client side session
2146 caching could not have worked due to the session ID mismatch between
2148 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2152 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2153 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2157 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2158 seems that in spite of existing for more than a year, many application
2159 author have done nothing to provide the necessary callbacks, which
2160 means that this particular engine will not work properly anywhere.
2161 This is a very unfortunate situation which forces us, in the name
2162 of usability, to give the hw_ncipher.c a static lock, which is part
2164 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2165 appear in 0.9.8 or later. We EXPECT application authors to have
2166 dealt properly with this when 0.9.8 is released (unless we actually
2167 make such changes in the libcrypto locking code that changes will
2168 have to be made anyway).
2171 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2172 octets have been read, EOF or an error occurs. Without this change
2173 some truncated ASN1 structures will not produce an error.
2176 *) Disable Heimdal support, since it hasn't been fully implemented.
2177 Still give the possibility to force the use of Heimdal, but with
2178 warnings and a request that patches get sent to openssl-dev.
2181 *) Add the VC-CE target, introduce the WINCE sysname, and add
2182 INSTALL.WCE and appropriate conditionals to make it build.
2183 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2185 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2186 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2187 edit numbers of the version.
2188 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2190 *) Introduce safe string copy and catenation functions
2191 (BUF_strlcpy() and BUF_strlcat()).
2192 [Ben Laurie (CHATS) and Richard Levitte]
2194 *) Avoid using fixed-size buffers for one-line DNs.
2195 [Ben Laurie (CHATS)]
2197 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2198 resizing buffers containing secrets, and use where appropriate.
2199 [Ben Laurie (CHATS)]
2201 *) Avoid using fixed size buffers for configuration file location.
2202 [Ben Laurie (CHATS)]
2204 *) Avoid filename truncation for various CA files.
2205 [Ben Laurie (CHATS)]
2207 *) Use sizeof in preference to magic numbers.
2208 [Ben Laurie (CHATS)]
2210 *) Avoid filename truncation in cert requests.
2211 [Ben Laurie (CHATS)]
2213 *) Add assertions to check for (supposedly impossible) buffer
2215 [Ben Laurie (CHATS)]
2217 *) Don't cache truncated DNS entries in the local cache (this could
2218 potentially lead to a spoofing attack).
2219 [Ben Laurie (CHATS)]
2221 *) Fix various buffers to be large enough for hex/decimal
2222 representations in a platform independent manner.
2223 [Ben Laurie (CHATS)]
2225 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2226 resizing buffers containing secrets, and use where appropriate.
2227 [Ben Laurie (CHATS)]
2229 *) Add BIO_indent() to avoid much slightly worrying code to do
2231 [Ben Laurie (CHATS)]
2233 *) Convert sprintf()/BIO_puts() to BIO_printf().
2234 [Ben Laurie (CHATS)]
2236 *) buffer_gets() could terminate with the buffer only half
2238 [Ben Laurie (CHATS)]
2240 *) Add assertions to prevent user-supplied crypto functions from
2241 overflowing internal buffers by having large block sizes, etc.
2242 [Ben Laurie (CHATS)]
2244 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2246 [Ben Laurie (CHATS)]
2248 *) Eliminate unused copy of key in RC4.
2249 [Ben Laurie (CHATS)]
2251 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2252 [Ben Laurie (CHATS)]
2254 *) Fix off-by-one error in EGD path.
2255 [Ben Laurie (CHATS)]
2257 *) If RANDFILE path is too long, ignore instead of truncating.
2258 [Ben Laurie (CHATS)]
2260 *) Eliminate unused and incorrectly sized X.509 structure
2262 [Ben Laurie (CHATS)]
2264 *) Eliminate unused and dangerous function knumber().
2265 [Ben Laurie (CHATS)]
2267 *) Eliminate unused and dangerous structure, KSSL_ERR.
2268 [Ben Laurie (CHATS)]
2270 *) Protect against overlong session ID context length in an encoded
2271 session object. Since these are local, this does not appear to be
2273 [Ben Laurie (CHATS)]
2275 *) Change from security patch (see 0.9.6e below) that did not affect
2276 the 0.9.6 release series:
2278 Remote buffer overflow in SSL3 protocol - an attacker could
2279 supply an oversized master key in Kerberos-enabled versions.
2281 [Ben Laurie (CHATS)]
2283 *) Change the SSL kerb5 codes to match RFC 2712.
2286 *) Make -nameopt work fully for req and add -reqopt switch.
2287 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2289 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2290 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2292 *) Make sure tests can be performed even if the corresponding algorithms
2293 have been removed entirely. This was also the last step to make
2294 OpenSSL compilable with DJGPP under all reasonable conditions.
2295 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2297 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2298 to allow version independent disabling of normally unselected ciphers,
2299 which may be activated as a side-effect of selecting a single cipher.
2301 (E.g., cipher list string "RSA" enables ciphersuites that are left
2302 out of "ALL" because they do not provide symmetric encryption.
2303 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2304 [Lutz Jaenicke, Bodo Moeller]
2306 *) Add appropriate support for separate platform-dependent build
2307 directories. The recommended way to make a platform-dependent
2308 build directory is the following (tested on Linux), maybe with
2311 # Place yourself outside of the OpenSSL source tree. In
2312 # this example, the environment variable OPENSSL_SOURCE
2313 # is assumed to contain the absolute OpenSSL source directory.
2314 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2315 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2316 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2317 mkdir -p `dirname $F`
2318 ln -s $OPENSSL_SOURCE/$F $F
2321 To be absolutely sure not to disturb the source tree, a "make clean"
2322 is a good thing. If it isn't successfull, don't worry about it,
2323 it probably means the source directory is very clean.
2326 *) Make sure any ENGINE control commands make local copies of string
2327 pointers passed to them whenever necessary. Otherwise it is possible
2328 the caller may have overwritten (or deallocated) the original string
2329 data when a later ENGINE operation tries to use the stored values.
2330 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2332 *) Improve diagnostics in file reading and command-line digests.
2333 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2335 *) Add AES modes CFB and OFB to the object database. Correct an
2336 error in AES-CFB decryption.
2339 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2340 allows existing EVP_CIPHER_CTX structures to be reused after
2341 calling EVP_*Final(). This behaviour is used by encryption
2342 BIOs and some applications. This has the side effect that
2343 applications must explicitly clean up cipher contexts with
2344 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2347 *) Check the values of dna and dnb in bn_mul_recursive before calling
2348 bn_mul_comba (a non zero value means the a or b arrays do not contain
2349 n2 elements) and fallback to bn_mul_normal if either is not zero.
2352 *) Fix escaping of non-ASCII characters when using the -subj option
2353 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2356 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2357 form for "surname", serialNumber has no short form.
2358 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2359 therefore remove "mail" short name for "internet 7".
2360 The OID for unique identifiers in X509 certificates is
2361 x500UniqueIdentifier, not uniqueIdentifier.
2362 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2365 *) Add an "init" command to the ENGINE config module and auto initialize
2366 ENGINEs. Without any "init" command the ENGINE will be initialized
2367 after all ctrl commands have been executed on it. If init=1 the
2368 ENGINE is initailized at that point (ctrls before that point are run
2369 on the uninitialized ENGINE and after on the initialized one). If
2370 init=0 then the ENGINE will not be iniatialized at all.
2373 *) Fix the 'app_verify_callback' interface so that the user-defined
2374 argument is actually passed to the callback: In the
2375 SSL_CTX_set_cert_verify_callback() prototype, the callback
2376 declaration has been changed from
2379 int (*cb)(X509_STORE_CTX *,void *);
2380 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2381 i=s->ctx->app_verify_callback(&ctx)
2382 has been changed into
2383 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2385 To update applications using SSL_CTX_set_cert_verify_callback(),
2386 a dummy argument can be added to their callback functions.
2387 [D. K. Smetters <smetters@parc.xerox.com>]
2389 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2390 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2392 *) Add and OPENSSL_LOAD_CONF define which will cause
2393 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2394 This allows older applications to transparently support certain
2395 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2396 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2397 load the config file and OPENSSL_add_all_algorithms_conf() which will
2398 always load it have also been added.
2401 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2402 Adjust NIDs and EVP layer.
2403 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2405 *) Config modules support in openssl utility.
2407 Most commands now load modules from the config file,
2408 though in a few (such as version) this isn't done
2409 because it couldn't be used for anything.
2411 In the case of ca and req the config file used is
2412 the same as the utility itself: that is the -config
2413 command line option can be used to specify an
2417 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2418 use "openssl_conf" if filename is NULL use default openssl config file.
2421 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2422 config section name. Add a new flag to tolerate a missing config file
2423 and move code to CONF_modules_load_file().
2426 *) Support for crypto accelerator cards from Accelerated Encryption
2427 Processing, www.aep.ie. (Use engine 'aep')
2428 The support was copied from 0.9.6c [engine] and adapted/corrected
2429 to work with the new engine framework.
2430 [AEP Inc. and Richard Levitte]
2432 *) Support for SureWare crypto accelerator cards from Baltimore
2433 Technologies. (Use engine 'sureware')
2434 The support was copied from 0.9.6c [engine] and adapted
2435 to work with the new engine framework.
2438 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2439 make the newer ENGINE framework commands for the CHIL engine work.
2440 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2442 *) Make it possible to produce shared libraries on ReliantUNIX.
2443 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2445 *) Add the configuration target debug-linux-ppro.
2446 Make 'openssl rsa' use the general key loading routines
2447 implemented in apps.c, and make those routines able to
2448 handle the key format FORMAT_NETSCAPE and the variant
2450 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2452 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2453 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2455 *) Add -keyform to rsautl, and document -engine.
2456 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2458 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2459 BIO_R_NO_SUCH_FILE error code rather than the generic
2460 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2463 *) Add new functions
2465 ERR_peek_last_error_line
2466 ERR_peek_last_error_line_data.
2467 These are similar to
2470 ERR_peek_error_line_data,
2471 but report on the latest error recorded rather than the first one
2472 still in the error queue.
2473 [Ben Laurie, Bodo Moeller]
2475 *) default_algorithms option in ENGINE config module. This allows things
2477 default_algorithms = ALL
2478 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2481 *) Prelminary ENGINE config module.
2484 *) New experimental application configuration code.
2487 *) Change the AES code to follow the same name structure as all other
2488 symmetric ciphers, and behave the same way. Move everything to
2489 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2490 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2492 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2493 [Ben Laurie and Theo de Raadt]
2495 *) Add option to output public keys in req command.
2496 [Massimiliano Pala madwolf@openca.org]
2498 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2499 (up to about 10% better than before for P-192 and P-224).
2502 *) New functions/macros
2504 SSL_CTX_set_msg_callback(ctx, cb)
2505 SSL_CTX_set_msg_callback_arg(ctx, arg)
2506 SSL_set_msg_callback(ssl, cb)
2507 SSL_set_msg_callback_arg(ssl, arg)
2509 to request calling a callback function
2511 void cb(int write_p, int version, int content_type,
2512 const void *buf, size_t len, SSL *ssl, void *arg)
2514 whenever a protocol message has been completely received
2515 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2516 protocol version according to which the SSL library interprets
2517 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2518 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2519 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2520 specification (change_cipher_spec(20), alert(21), handshake(22)).
2521 'buf' and 'len' point to the actual message, 'ssl' to the
2522 SSL object, and 'arg' is the application-defined value set by
2523 SSL[_CTX]_set_msg_callback_arg().
2525 'openssl s_client' and 'openssl s_server' have new '-msg' options
2526 to enable a callback that displays all protocol messages.
2529 *) Change the shared library support so shared libraries are built as
2530 soon as the corresponding static library is finished, and thereby get
2531 openssl and the test programs linked against the shared library.
2532 This still only happens when the keyword "shard" has been given to
2533 the configuration scripts.
2535 NOTE: shared library support is still an experimental thing, and
2536 backward binary compatibility is still not guaranteed.
2537 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2539 *) Add support for Subject Information Access extension.
2540 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2542 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2543 additional bytes when new memory had to be allocated, not just
2544 when reusing an existing buffer.
2547 *) New command line and configuration option 'utf8' for the req command.
2548 This allows field values to be specified as UTF8 strings.
2551 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2552 runs for the former and machine-readable output for the latter.
2555 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2556 of the e-mail address in the DN (i.e., it will go into a certificate
2557 extension only). The new configuration file option 'email_in_dn = no'
2558 has the same effect.
2559 [Massimiliano Pala madwolf@openca.org]
2561 *) Change all functions with names starting with des_ to be starting
2562 with DES_ instead. Add wrappers that are compatible with libdes,
2563 but are named _ossl_old_des_*. Finally, add macros that map the
2564 des_* symbols to the corresponding _ossl_old_des_* if libdes
2565 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2566 desired, the des_* symbols will be mapped to DES_*, with one
2569 Since we provide two compatibility mappings, the user needs to
2570 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2571 compatibility is desired. The default (i.e., when that macro
2572 isn't defined) is OpenSSL 0.9.6c compatibility.
2574 There are also macros that enable and disable the support of old
2575 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2576 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2577 are defined, the default will apply: to support the old des routines.
2579 In either case, one must include openssl/des.h to get the correct
2580 definitions. Do not try to just include openssl/des_old.h, that
2583 NOTE: This is a major break of an old API into a new one. Software
2584 authors are encouraged to switch to the DES_ style functions. Some
2585 time in the future, des_old.h and the libdes compatibility functions
2586 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2587 default), and then completely removed.
2590 *) Test for certificates which contain unsupported critical extensions.
2591 If such a certificate is found during a verify operation it is
2592 rejected by default: this behaviour can be overridden by either
2593 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2594 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2595 X509_supported_extension() has also been added which returns 1 if a
2596 particular extension is supported.
2599 *) Modify the behaviour of EVP cipher functions in similar way to digests
2600 to retain compatibility with existing code.
2603 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2604 compatibility with existing code. In particular the 'ctx' parameter does
2605 not have to be to be initialized before the call to EVP_DigestInit() and
2606 it is tidied up after a call to EVP_DigestFinal(). New function
2607 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2608 EVP_MD_CTX_copy() changed to not require the destination to be
2609 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2610 requires the destination to be valid.
2612 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2613 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2616 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2617 so that complete 'Handshake' protocol structures are kept in memory
2618 instead of overwriting 'msg_type' and 'length' with 'body' data.
2621 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2622 [Massimo Santin via Richard Levitte]
2624 *) Major restructuring to the underlying ENGINE code. This includes
2625 reduction of linker bloat, separation of pure "ENGINE" manipulation
2626 (initialisation, etc) from functionality dealing with implementations
2627 of specific crypto iterfaces. This change also introduces integrated
2628 support for symmetric ciphers and digest implementations - so ENGINEs
2629 can now accelerate these by providing EVP_CIPHER and EVP_MD
2630 implementations of their own. This is detailed in crypto/engine/README
2631 as it couldn't be adequately described here. However, there are a few
2632 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2633 were changed in the original introduction of ENGINE code have now
2634 reverted back - the hooking from this code to ENGINE is now a good
2635 deal more passive and at run-time, operations deal directly with
2636 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2637 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2638 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2639 they were not being used by the framework as there is no concept of a
2640 BIGNUM_METHOD and they could not be generalised to the new
2641 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2642 ENGINE_cpy() has been removed as it cannot be consistently defined in
2646 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2649 *) Change mkdef.pl to sort symbols that get the same entry number,
2650 and make sure the automatically generated functions ERR_load_*
2651 become part of libeay.num as well.
2654 *) New function SSL_renegotiate_pending(). This returns true once
2655 renegotiation has been requested (either SSL_renegotiate() call
2656 or HelloRequest/ClientHello receveived from the peer) and becomes
2657 false once a handshake has been completed.
2658 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2659 sends a HelloRequest, but does not ensure that a handshake takes
2660 place. SSL_renegotiate_pending() is useful for checking if the
2661 client has followed the request.)
2664 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2665 By default, clients may request session resumption even during
2666 renegotiation (if session ID contexts permit); with this option,
2667 session resumption is possible only in the first handshake.
2669 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2670 more bits available for options that should not be part of
2671 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2674 *) Add some demos for certificate and certificate request creation.
2677 *) Make maximum certificate chain size accepted from the peer application
2678 settable (SSL*_get/set_max_cert_list()), as proposed by
2679 "Douglas E. Engert" <deengert@anl.gov>.
2682 *) Add support for shared libraries for Unixware-7
2683 (Boyd Lynn Gerber <gerberb@zenez.com>).
2686 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2687 be done prior to destruction. Use this to unload error strings from
2688 ENGINEs that load their own error strings. NB: This adds two new API
2689 functions to "get" and "set" this destroy handler in an ENGINE.
2692 *) Alter all existing ENGINE implementations (except "openssl" and
2693 "openbsd") to dynamically instantiate their own error strings. This
2694 makes them more flexible to be built both as statically-linked ENGINEs
2695 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2696 Also, add stub code to each that makes building them as self-contained
2697 shared-libraries easier (see README.ENGINE).
2700 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2701 implementations into applications that are completely implemented in
2702 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2703 commands that can be used to configure what shared-library to load and
2704 to control aspects of the way it is handled. Also, made an update to
2705 the README.ENGINE file that brings its information up-to-date and
2706 provides some information and instructions on the "dynamic" ENGINE
2707 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2710 *) Make it possible to unload ranges of ERR strings with a new
2711 "ERR_unload_strings" function.
2714 *) Add a copy() function to EVP_MD.
2717 *) Make EVP_MD routines take a context pointer instead of just the
2718 md_data void pointer.
2721 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2722 that the digest can only process a single chunk of data
2723 (typically because it is provided by a piece of
2724 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2725 is only going to provide a single chunk of data, and hence the
2726 framework needn't accumulate the data for oneshot drivers.
2729 *) As with "ERR", make it possible to replace the underlying "ex_data"
2730 functions. This change also alters the storage and management of global
2731 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2732 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2733 index counters. The API functions that use this state have been changed
2734 to take a "class_index" rather than pointers to the class's local STACK
2735 and counter, and there is now an API function to dynamically create new
2736 classes. This centralisation allows us to (a) plug a lot of the
2737 thread-safety problems that existed, and (b) makes it possible to clean
2738 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2739 such data would previously have always leaked in application code and
2740 workarounds were in place to make the memory debugging turn a blind eye
2741 to it. Application code that doesn't use this new function will still
2742 leak as before, but their memory debugging output will announce it now
2743 rather than letting it slide.
2745 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2746 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2747 has a return value to indicate success or failure.
2750 *) Make it possible to replace the underlying "ERR" functions such that the
2751 global state (2 LHASH tables and 2 locks) is only used by the "default"
2752 implementation. This change also adds two functions to "get" and "set"
2753 the implementation prior to it being automatically set the first time
2754 any other ERR function takes place. Ie. an application can call "get",
2755 pass the return value to a module it has just loaded, and that module
2756 can call its own "set" function using that value. This means the
2757 module's "ERR" operations will use (and modify) the error state in the
2758 application and not in its own statically linked copy of OpenSSL code.
2761 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2762 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2763 the operation, and provides a more encapsulated way for external code
2764 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2765 to use these functions rather than manually incrementing the counts.
2767 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2770 *) Add EVP test program.
2773 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2776 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2777 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2778 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2779 These allow a CRL to be built without having to access X509_CRL fields
2780 directly. Modify 'ca' application to use new functions.
2783 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2784 bug workarounds. Rollback attack detection is a security feature.
2785 The problem will only arise on OpenSSL servers when TLSv1 is not
2786 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2787 Software authors not wanting to support TLSv1 will have special reasons
2788 for their choice and can explicitly enable this option.
2789 [Bodo Moeller, Lutz Jaenicke]
2791 *) Rationalise EVP so it can be extended: don't include a union of
2792 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2793 (similar to those existing for EVP_CIPHER_CTX).
2798 EVP_MD_CTX_init(&md); /* new function call */
2799 EVP_DigestInit(&md, EVP_sha1());
2800 EVP_DigestUpdate(&md, in, len);
2801 EVP_DigestFinal(&md, out, NULL);
2802 EVP_MD_CTX_cleanup(&md); /* new function call */
2806 *) Make DES key schedule conform to the usual scheme, as well as
2807 correcting its structure. This means that calls to DES functions
2808 now have to pass a pointer to a des_key_schedule instead of a
2809 plain des_key_schedule (which was actually always a pointer
2812 des_key_schedule ks;
2814 des_set_key_checked(..., &ks);
2815 des_ncbc_encrypt(..., &ks, ...);
2817 (Note that a later change renames 'des_...' into 'DES_...'.)
2820 *) Initial reduction of linker bloat: the use of some functions, such as
2821 PEM causes large amounts of unused functions to be linked in due to
2822 poor organisation. For example pem_all.c contains every PEM function
2823 which has a knock on effect of linking in large amounts of (unused)
2824 ASN1 code. Grouping together similar functions and splitting unrelated
2825 functions prevents this.
2828 *) Cleanup of EVP macros.
2831 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2832 correct _ecb suffix.
2835 *) Add initial OCSP responder support to ocsp application. The
2836 revocation information is handled using the text based index
2837 use by the ca application. The responder can either handle
2838 requests generated internally, supplied in files (for example
2839 via a CGI script) or using an internal minimal server.
2842 *) Add configuration choices to get zlib compression for TLS.
2845 *) Changes to Kerberos SSL for RFC 2712 compliance:
2846 1. Implemented real KerberosWrapper, instead of just using
2847 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2848 2. Implemented optional authenticator field of KerberosWrapper.
2850 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2851 and authenticator structs; see crypto/krb5/.
2853 Generalized Kerberos calls to support multiple Kerberos libraries.
2854 [Vern Staats <staatsvr@asc.hpc.mil>,
2855 Jeffrey Altman <jaltman@columbia.edu>
2856 via Richard Levitte]
2858 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2859 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2860 values for each of the key sizes rather than having just
2861 parameters (and 'speed' generating keys each time).
2864 *) Speed up EVP routines.
2867 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2868 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2869 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2870 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2872 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2873 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2874 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2877 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2879 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2882 *) Added the OS2-EMX target.
2883 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2885 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2886 to support NCONF routines in extension code. New function CONF_set_nconf()
2887 to allow functions which take an NCONF to also handle the old LHASH
2888 structure: this means that the old CONF compatible routines can be
2889 retained (in particular wrt extensions) without having to duplicate the
2890 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2893 *) Enhance the general user interface with mechanisms for inner control
2894 and with possibilities to have yes/no kind of prompts.
2897 *) Change all calls to low level digest routines in the library and
2898 applications to use EVP. Add missing calls to HMAC_cleanup() and
2899 don't assume HMAC_CTX can be copied using memcpy().
2900 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2902 *) Add the possibility to control engines through control names but with
2903 arbitrary arguments instead of just a string.
2904 Change the key loaders to take a UI_METHOD instead of a callback
2905 function pointer. NOTE: this breaks binary compatibility with earlier
2906 versions of OpenSSL [engine].
2907 Adapt the nCipher code for these new conditions and add a card insertion
2911 *) Enhance the general user interface with mechanisms to better support
2912 dialog box interfaces, application-defined prompts, the possibility
2913 to use defaults (for example default passwords from somewhere else)
2914 and interrupts/cancellations.
2917 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2918 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2921 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2922 tidy up some unnecessarily weird code in 'sk_new()').
2923 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2925 *) Change the key loading routines for ENGINEs to use the same kind
2926 callback (pem_password_cb) as all other routines that need this
2930 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2931 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2932 than this minimum value is recommended.
2935 *) New random seeder for OpenVMS, using the system process statistics
2936 that are easily reachable.
2939 *) Windows apparently can't transparently handle global
2940 variables defined in DLLs. Initialisations such as:
2942 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2944 wont compile. This is used by the any applications that need to
2945 declare their own ASN1 modules. This was fixed by adding the option
2946 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2947 needed for static libraries under Win32.
2950 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2951 setting of purpose and trust fields. New X509_STORE trust and
2952 purpose functions and tidy up setting in other SSL functions.
2955 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2956 structure. These are inherited by X509_STORE_CTX when it is
2957 initialised. This allows various defaults to be set in the
2958 X509_STORE structure (such as flags for CRL checking and custom
2959 purpose or trust settings) for functions which only use X509_STORE_CTX
2960 internally such as S/MIME.
2962 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2963 trust settings if they are not set in X509_STORE. This allows X509_STORE
2964 purposes and trust (in S/MIME for example) to override any set by default.
2966 Add command line options for CRL checking to smime, s_client and s_server
2970 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2971 are set then the CRL is looked up in the X509_STORE structure and
2972 its validity and signature checked, then if the certificate is found
2973 in the CRL the verify fails with a revoked error.
2975 Various new CRL related callbacks added to X509_STORE_CTX structure.
2977 Command line options added to 'verify' application to support this.
2979 This needs some additional work, such as being able to handle multiple
2980 CRLs with different times, extension based lookup (rather than just
2981 by subject name) and ultimately more complete V2 CRL extension
2985 *) Add a general user interface API (crypto/ui/). This is designed
2986 to replace things like des_read_password and friends (backward
2987 compatibility functions using this new API are provided).
2988 The purpose is to remove prompting functions from the DES code
2989 section as well as provide for prompting through dialog boxes in
2990 a window system and the like.
2993 *) Add "ex_data" support to ENGINE so implementations can add state at a
2994 per-structure level rather than having to store it globally.
2997 *) Make it possible for ENGINE structures to be copied when retrieved by
2998 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
2999 This causes the "original" ENGINE structure to act like a template,
3000 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3001 operational state can be localised to each ENGINE structure, despite the
3002 fact they all share the same "methods". New ENGINE structures returned in
3003 this case have no functional references and the return value is the single
3004 structural reference. This matches the single structural reference returned
3005 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3009 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3010 needs to match any other type at all we need to manually clear the
3014 *) Changes to the "openssl engine" utility to include;
3015 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3016 about an ENGINE's available control commands.
3017 - executing control commands from command line arguments using the
3018 '-pre' and '-post' switches. '-post' is only used if '-t' is
3019 specified and the ENGINE is successfully initialised. The syntax for
3020 the individual commands are colon-separated, for example;
3021 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3024 *) New dynamic control command support for ENGINEs. ENGINEs can now
3025 declare their own commands (numbers), names (strings), descriptions,
3026 and input types for run-time discovery by calling applications. A
3027 subset of these commands are implicitly classed as "executable"
3028 depending on their input type, and only these can be invoked through
3029 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3030 can be based on user input, config files, etc). The distinction is
3031 that "executable" commands cannot return anything other than a boolean
3032 result and can only support numeric or string input, whereas some
3033 discoverable commands may only be for direct use through
3034 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3035 pointers, or other custom uses. The "executable" commands are to
3036 support parameterisations of ENGINE behaviour that can be
3037 unambiguously defined by ENGINEs and used consistently across any
3038 OpenSSL-based application. Commands have been added to all the
3039 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3040 control over shared-library paths without source code alterations.
3043 *) Changed all ENGINE implementations to dynamically allocate their
3044 ENGINEs rather than declaring them statically. Apart from this being
3045 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3046 this also allows the implementations to compile without using the
3047 internal engine_int.h header.
3050 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3051 'const' value. Any code that should be able to modify a RAND_METHOD
3052 should already have non-const pointers to it (ie. they should only
3053 modify their own ones).
3056 *) Made a variety of little tweaks to the ENGINE code.
3057 - "atalla" and "ubsec" string definitions were moved from header files
3058 to C code. "nuron" string definitions were placed in variables
3059 rather than hard-coded - allowing parameterisation of these values
3060 later on via ctrl() commands.
3061 - Removed unused "#if 0"'d code.
3062 - Fixed engine list iteration code so it uses ENGINE_free() to release
3063 structural references.
3064 - Constified the RAND_METHOD element of ENGINE structures.
3065 - Constified various get/set functions as appropriate and added
3066 missing functions (including a catch-all ENGINE_cpy that duplicates
3067 all ENGINE values onto a new ENGINE except reference counts/state).
3068 - Removed NULL parameter checks in get/set functions. Setting a method
3069 or function to NULL is a way of cancelling out a previously set
3070 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3071 and doesn't justify the extra error symbols and code.
3072 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3073 flags from engine_int.h to engine.h.
3074 - Changed prototypes for ENGINE handler functions (init(), finish(),
3075 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3078 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3079 to the algorithm using long division. The binary algorithm can be
3080 used only if the modulus is odd. On 32-bit systems, it is faster
3081 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3082 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3083 up to 450 bits. In 64-bit environments, the binary algorithm
3084 appears to be advantageous for much longer moduli; here we use it
3085 for moduli up to 2048 bits.
3088 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3089 could not support the combine flag in choice fields.
3092 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3093 extensions from a certificate request to the certificate.
3096 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3097 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3098 file: this allows the display of the certificate about to be
3099 signed to be customised, to allow certain fields to be included
3100 or excluded and extension details. The old system didn't display
3101 multicharacter strings properly, omitted fields not in the policy
3102 and couldn't display additional details such as extensions.
3105 *) Function EC_POINTs_mul for multiple scalar multiplication
3106 of an arbitrary number of elliptic curve points
3107 \sum scalars[i]*points[i],
3108 optionally including the generator defined for the EC_GROUP:
3109 scalar*generator + \sum scalars[i]*points[i].
3111 EC_POINT_mul is a simple wrapper function for the typical case
3112 that the point list has just one item (besides the optional
3116 *) First EC_METHODs for curves over GF(p):
3118 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3119 operations and provides various method functions that can also
3120 operate with faster implementations of modular arithmetic.
3122 EC_GFp_mont_method() reuses most functions that are part of
3123 EC_GFp_simple_method, but uses Montgomery arithmetic.
3125 [Bodo Moeller; point addition and point doubling
3126 implementation directly derived from source code provided by
3127 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3129 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3130 crypto/ec/ec_lib.c):
3132 Curves are EC_GROUP objects (with an optional group generator)
3133 based on EC_METHODs that are built into the library.
3135 Points are EC_POINT objects based on EC_GROUP objects.
3137 Most of the framework would be able to handle curves over arbitrary
3138 finite fields, but as there are no obvious types for fields other
3139 than GF(p), some functions are limited to that for now.
3142 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3143 that the file contains a complete HTTP response.
3146 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3147 change the def and num file printf format specifier from "%-40sXXX"
3148 to "%-39s XXX". The latter will always guarantee a space after the
3149 field while the former will cause them to run together if the field
3150 is 40 of more characters long.
3153 *) Constify the cipher and digest 'method' functions and structures
3154 and modify related functions to take constant EVP_MD and EVP_CIPHER
3158 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3159 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3162 *) Modify EVP_Digest*() routines so they now return values. Although the
3163 internal software routines can never fail additional hardware versions
3167 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3169 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3170 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3173 ERR_R_NESTED_ASN1_ERROR
3175 ERR_R_MISSING_ASN1_EOS
3176 were 4 .. 9, conflicting with
3177 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3179 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3180 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3182 Add new error code 'ERR_R_INTERNAL_ERROR'.
3185 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3189 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3190 sets the subject name for a new request or supersedes the
3191 subject name in a given request. Formats that can be parsed are
3192 'CN=Some Name, OU=myOU, C=IT'
3194 'CN=Some Name/OU=myOU/C=IT'.
3196 Add options '-batch' and '-verbose' to 'openssl req'.
3197 [Massimiliano Pala <madwolf@hackmasters.net>]
3199 *) Introduce the possibility to access global variables through
3200 functions on platform were that's the best way to handle exporting
3201 global variables in shared libraries. To enable this functionality,
3202 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3203 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3204 is normally done by Configure or something similar).
3206 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3207 in the source file (foo.c) like this:
3209 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3210 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3212 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3213 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3215 OPENSSL_DECLARE_GLOBAL(int,foo);
3216 #define foo OPENSSL_GLOBAL_REF(foo)
3217 OPENSSL_DECLARE_GLOBAL(double,bar);
3218 #define bar OPENSSL_GLOBAL_REF(bar)
3220 The #defines are very important, and therefore so is including the
3221 header file everywhere where the defined globals are used.
3223 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3224 of ASN.1 items, but that structure is a bit different.
3226 The largest change is in util/mkdef.pl which has been enhanced with
3227 better and easier to understand logic to choose which symbols should
3228 go into the Windows .def files as well as a number of fixes and code
3229 cleanup (among others, algorithm keywords are now sorted
3230 lexicographically to avoid constant rewrites).
3233 *) In BN_div() keep a copy of the sign of 'num' before writing the
3234 result to 'rm' because if rm==num the value will be overwritten
3235 and produce the wrong result if 'num' is negative: this caused
3236 problems with BN_mod() and BN_nnmod().
3239 *) Function OCSP_request_verify(). This checks the signature on an
3240 OCSP request and verifies the signer certificate. The signer
3241 certificate is just checked for a generic purpose and OCSP request
3245 *) Add OCSP_check_validity() function to check the validity of OCSP
3246 responses. OCSP responses are prepared in real time and may only
3247 be a few seconds old. Simply checking that the current time lies
3248 between thisUpdate and nextUpdate max reject otherwise valid responses
3249 caused by either OCSP responder or client clock inaccuracy. Instead
3250 we allow thisUpdate and nextUpdate to fall within a certain period of
3251 the current time. The age of the response can also optionally be
3252 checked. Two new options -validity_period and -status_age added to
3256 *) If signature or public key algorithm is unrecognized print out its
3257 OID rather that just UNKNOWN.
3260 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3261 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3262 ID to be generated from the issuer certificate alone which can then be
3263 passed to OCSP_id_issuer_cmp().
3266 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3267 ASN1 modules to export functions returning ASN1_ITEM pointers
3268 instead of the ASN1_ITEM structures themselves. This adds several
3269 new macros which allow the underlying ASN1 function/structure to
3270 be accessed transparently. As a result code should not use ASN1_ITEM
3271 references directly (such as &X509_it) but instead use the relevant
3272 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3273 use of the new ASN1 code on platforms where exporting structures
3274 is problematical (for example in shared libraries) but exporting
3275 functions returning pointers to structures is not.
3278 *) Add support for overriding the generation of SSL/TLS session IDs.
3279 These callbacks can be registered either in an SSL_CTX or per SSL.
3280 The purpose of this is to allow applications to control, if they wish,
3281 the arbitrary values chosen for use as session IDs, particularly as it
3282 can be useful for session caching in multiple-server environments. A
3283 command-line switch for testing this (and any client code that wishes
3284 to use such a feature) has been added to "s_server".
3285 [Geoff Thorpe, Lutz Jaenicke]
3287 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3288 of the form '#if defined(...) || defined(...) || ...' and
3289 '#if !defined(...) && !defined(...) && ...'. This also avoids
3290 the growing number of special cases it was previously handling.
3293 *) Make all configuration macros available for application by making
3294 sure they are available in opensslconf.h, by giving them names starting
3295 with "OPENSSL_" to avoid conflicts with other packages and by making
3296 sure e_os2.h will cover all platform-specific cases together with
3298 Additionally, it is now possible to define configuration/platform-
3299 specific names (called "system identities"). In the C code, these
3300 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3301 macro with the name beginning with "OPENSSL_SYS_", which is determined
3302 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3306 *) New option -set_serial to 'req' and 'x509' this allows the serial
3307 number to use to be specified on the command line. Previously self
3308 signed certificates were hard coded with serial number 0 and the
3309 CA options of 'x509' had to use a serial number in a file which was
3313 *) New options to 'ca' utility to support V2 CRL entry extensions.
3314 Currently CRL reason, invalidity date and hold instruction are
3315 supported. Add new CRL extensions to V3 code and some new objects.
3318 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3319 disable standard block padding (aka PKCS#5 padding) in the EVP
3320 API, which was previously mandatory. This means that the data is
3321 not padded in any way and so the total length much be a multiple
3322 of the block size, otherwise an error occurs.
3325 *) Initial (incomplete) OCSP SSL support.
3328 *) New function OCSP_parse_url(). This splits up a URL into its host,
3329 port and path components: primarily to parse OCSP URLs. New -url
3330 option to ocsp utility.
3333 *) New nonce behavior. The return value of OCSP_check_nonce() now
3334 reflects the various checks performed. Applications can decide
3335 whether to tolerate certain situations such as an absent nonce
3336 in a response when one was present in a request: the ocsp application
3337 just prints out a warning. New function OCSP_add1_basic_nonce()
3338 this is to allow responders to include a nonce in a response even if
3339 the request is nonce-less.
3342 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3343 skipped when using openssl x509 multiple times on a single input file,
3344 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3347 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3348 set string type: to handle setting ASN1_TIME structures. Fix ca
3349 utility to correctly initialize revocation date of CRLs.
3352 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3353 the clients preferred ciphersuites and rather use its own preferences.
3354 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3355 Internet Explorer by ensuring unchanged hash method during stepup.
3356 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3359 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3360 to aes and add a new 'exist' option to print out symbols that don't
3364 *) Additional options to ocsp utility to allow flags to be set and
3365 additional certificates supplied.
3368 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3369 OCSP client a number of certificate to only verify the response
3373 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3374 handle the new API. Currently only ECB, CBC modes supported. Add new
3377 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3378 Encryption Standard (AES) Ciphersuites for Transport Layer
3379 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3380 not enabled by default and were not part of the "ALL" ciphersuite
3381 alias because they were not yet official; they could be
3382 explicitly requested by specifying the "AESdraft" ciphersuite
3383 group alias. In the final release of OpenSSL 0.9.7, the group
3384 alias is called "AES" and is part of "ALL".)
3385 [Ben Laurie, Steve Henson, Bodo Moeller]
3387 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3388 request to response.
3391 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3392 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3393 extract information from a certificate request. OCSP_response_create()
3394 creates a response and optionally adds a basic response structure.
3395 OCSP_basic_add1_status() adds a complete single response to a basic
3396 response and returns the OCSP_SINGLERESP structure just added (to allow
3397 extensions to be included for example). OCSP_basic_add1_cert() adds a
3398 certificate to a basic response and OCSP_basic_sign() signs a basic
3399 response with various flags. New helper functions ASN1_TIME_check()
3400 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3401 (converts ASN1_TIME to GeneralizedTime).
3404 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3405 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3406 structure from a certificate. X509_pubkey_digest() digests the public_key
3407 contents: this is used in various key identifiers.
3410 *) Make sk_sort() tolerate a NULL argument.
3411 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3413 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3414 passed by the function are trusted implicitly. If any of them signed the
3415 response then it is assumed to be valid and is not verified.
3418 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3419 to data. This was previously part of the PKCS7 ASN1 code. This
3420 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3421 [Steve Henson, reported by Kenneth R. Robinette
3422 <support@securenetterm.com>]
3424 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3425 routines: without these tracing memory leaks is very painful.
3426 Fix leaks in PKCS12 and PKCS7 routines.
3429 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3430 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3431 effectively meant GeneralizedTime would never be used. Now it
3432 is initialised to -1 but X509_time_adj() now has to check the value
3433 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3434 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3435 [Steve Henson, reported by Kenneth R. Robinette
3436 <support@securenetterm.com>]
3438 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3439 result in a zero length in the ASN1_INTEGER structure which was
3440 not consistent with the structure when d2i_ASN1_INTEGER() was used
3441 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3442 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3443 where it did not print out a minus for negative ASN1_INTEGER.
3446 *) Add summary printout to ocsp utility. The various functions which
3447 convert status values to strings have been renamed to:
3448 OCSP_response_status_str(), OCSP_cert_status_str() and
3449 OCSP_crl_reason_str() and are no longer static. New options
3450 to verify nonce values and to disable verification. OCSP response
3451 printout format cleaned up.
3454 *) Add additional OCSP certificate checks. These are those specified
3455 in RFC2560. This consists of two separate checks: the CA of the
3456 certificate being checked must either be the OCSP signer certificate
3457 or the issuer of the OCSP signer certificate. In the latter case the
3458 OCSP signer certificate must contain the OCSP signing extended key
3459 usage. This check is performed by attempting to match the OCSP
3460 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3461 in the OCSP_CERTID structures of the response.
3464 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3465 and related routines. This uses the standard OpenSSL certificate
3466 verify routines to perform initial checks (just CA validity) and
3467 to obtain the certificate chain. Then additional checks will be
3468 performed on the chain. Currently the root CA is checked to see
3469 if it is explicitly trusted for OCSP signing. This is used to set
3470 a root CA as a global signing root: that is any certificate that
3471 chains to that CA is an acceptable OCSP signing certificate.
3474 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3475 extensions from a separate configuration file.
3476 As when reading extensions from the main configuration file,
3477 the '-extensions ...' option may be used for specifying the
3479 [Massimiliano Pala <madwolf@comune.modena.it>]
3481 *) New OCSP utility. Allows OCSP requests to be generated or
3482 read. The request can be sent to a responder and the output
3483 parsed, outputed or printed in text form. Not complete yet:
3484 still needs to check the OCSP response validity.
3487 *) New subcommands for 'openssl ca':
3488 'openssl ca -status <serial>' prints the status of the cert with
3489 the given serial number (according to the index file).
3490 'openssl ca -updatedb' updates the expiry status of certificates
3492 [Massimiliano Pala <madwolf@comune.modena.it>]
3494 *) New '-newreq-nodes' command option to CA.pl. This is like
3495 '-newreq', but calls 'openssl req' with the '-nodes' option
3496 so that the resulting key is not encrypted.
3497 [Damien Miller <djm@mindrot.org>]
3499 *) New configuration for the GNU Hurd.
3500 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3502 *) Initial code to implement OCSP basic response verify. This
3503 is currently incomplete. Currently just finds the signer's
3504 certificate and verifies the signature on the response.
3507 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3508 value of OPENSSLDIR. This is available via the new '-d' option
3509 to 'openssl version', and is also included in 'openssl version -a'.
3512 *) Allowing defining memory allocation callbacks that will be given
3513 file name and line number information in additional arguments
3514 (a const char* and an int). The basic functionality remains, as
3515 well as the original possibility to just replace malloc(),
3516 realloc() and free() by functions that do not know about these
3517 additional arguments. To register and find out the current
3518 settings for extended allocation functions, the following
3519 functions are provided:
3521 CRYPTO_set_mem_ex_functions
3522 CRYPTO_set_locked_mem_ex_functions
3523 CRYPTO_get_mem_ex_functions
3524 CRYPTO_get_locked_mem_ex_functions
3526 These work the same way as CRYPTO_set_mem_functions and friends.
3527 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3528 extended allocation function is enabled.
3529 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3530 a conventional allocation function is enabled.
3531 [Richard Levitte, Bodo Moeller]
3533 *) Finish off removing the remaining LHASH function pointer casts.
3534 There should no longer be any prototype-casting required when using
3535 the LHASH abstraction, and any casts that remain are "bugs". See
3536 the callback types and macros at the head of lhash.h for details
3537 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3540 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3541 If /dev/[u]random devices are not available or do not return enough
3542 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3544 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3545 /etc/entropy will be queried once each in this sequence, quering stops
3546 when enough entropy was collected without querying more sockets.
3549 *) Change the Unix RAND_poll() variant to be able to poll several
3550 random devices, as specified by DEVRANDOM, until a sufficient amount
3551 of data has been collected. We spend at most 10 ms on each file
3552 (select timeout) and read in non-blocking mode. DEVRANDOM now
3553 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3554 (previously it was just the string "/dev/urandom"), so on typical
3555 platforms the 10 ms delay will never occur.
3556 Also separate out the Unix variant to its own file, rand_unix.c.
3557 For VMS, there's a currently-empty rand_vms.c.
3560 *) Move OCSP client related routines to ocsp_cl.c. These
3561 provide utility functions which an application needing
3562 to issue a request to an OCSP responder and analyse the
3563 response will typically need: as opposed to those which an
3564 OCSP responder itself would need which will be added later.
3566 OCSP_request_sign() signs an OCSP request with an API similar
3567 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3568 response. OCSP_response_get1_basic() extracts basic response
3569 from response. OCSP_resp_find_status(): finds and extracts status
3570 information from an OCSP_CERTID structure (which will be created
3571 when the request structure is built). These are built from lower
3572 level functions which work on OCSP_SINGLERESP structures but
3573 wont normally be used unless the application wishes to examine
3574 extensions in the OCSP response for example.
3576 Replace nonce routines with a pair of functions.
3577 OCSP_request_add1_nonce() adds a nonce value and optionally
3578 generates a random value. OCSP_check_nonce() checks the
3579 validity of the nonce in an OCSP response.
3582 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3583 This doesn't copy the supplied OCSP_CERTID and avoids the
3584 need to free up the newly created id. Change return type
3585 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3586 This can then be used to add extensions to the request.
3587 Deleted OCSP_request_new(), since most of its functionality
3588 is now in OCSP_REQUEST_new() (and the case insensitive name
3589 clash) apart from the ability to set the request name which
3590 will be added elsewhere.
3593 *) Update OCSP API. Remove obsolete extensions argument from
3594 various functions. Extensions are now handled using the new
3595 OCSP extension code. New simple OCSP HTTP function which
3596 can be used to send requests and parse the response.
3599 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3600 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3601 uses the special reorder version of SET OF to sort the attributes
3602 and reorder them to match the encoded order. This resolves a long
3603 standing problem: a verify on a PKCS7 structure just after signing
3604 it used to fail because the attribute order did not match the
3605 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3606 it uses the received order. This is necessary to tolerate some broken
3607 software that does not order SET OF. This is handled by encoding
3608 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3609 to produce the required SET OF.
3612 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3613 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3614 files to get correct declarations of the ASN.1 item variables.
3617 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3618 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3619 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3620 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3621 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3622 ASN1_ITEM and no wrapper functions.
3625 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3626 replace the old function pointer based I/O routines. Change most of
3627 the *_d2i_bio() and *_d2i_fp() functions to use these.
3630 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3631 lines, recognice more "algorithms" that can be deselected, and make
3632 it complain about algorithm deselection that isn't recognised.
3635 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3636 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3637 to use new functions. Add NO_ASN1_OLD which can be set to remove
3638 some old style ASN1 functions: this can be used to determine if old
3639 code will still work when these eventually go away.
3642 *) New extension functions for OCSP structures, these follow the
3643 same conventions as certificates and CRLs.
3646 *) New function X509V3_add1_i2d(). This automatically encodes and
3647 adds an extension. Its behaviour can be customised with various
3648 flags to append, replace or delete. Various wrappers added for
3649 certifcates and CRLs.
3652 *) Fix to avoid calling the underlying ASN1 print routine when
3653 an extension cannot be parsed. Correct a typo in the
3654 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3657 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3658 entries for variables.
3661 *) Add functionality to apps/openssl.c for detecting locking
3662 problems: As the program is single-threaded, all we have
3663 to do is register a locking callback using an array for
3664 storing which locks are currently held by the program.
3667 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3668 SSL_get_ex_data_X509_STORE_idx(), which is used in
3669 ssl_verify_cert_chain() and thus can be called at any time
3670 during TLS/SSL handshakes so that thread-safety is essential.
3671 Unfortunately, the ex_data design is not at all suited
3672 for multi-threaded use, so it probably should be abolished.
3675 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3676 [Broadcom, tweaked and integrated by Geoff Thorpe]
3678 *) Move common extension printing code to new function
3679 X509V3_print_extensions(). Reorganise OCSP print routines and
3680 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3683 *) New function X509_signature_print() to remove duplication in some
3687 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3688 set (this was treated exactly the same as SET OF previously). This
3689 is used to reorder the STACK representing the structure to match the
3690 encoding. This will be used to get round a problem where a PKCS7
3691 structure which was signed could not be verified because the STACK
3692 order did not reflect the encoded order.
3695 *) Reimplement the OCSP ASN1 module using the new code.
3698 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3699 for its ASN1 operations. The old style function pointers still exist
3700 for now but they will eventually go away.
3703 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3704 completely replaces the old ASN1 functionality with a table driven
3705 encoder and decoder which interprets an ASN1_ITEM structure describing
3706 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3707 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3708 has also been converted to the new form.
3711 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3712 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3713 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3714 for negative moduli.
3717 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3718 of not touching the result's sign bit.
3721 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3725 *) Changed the LHASH code to use prototypes for callbacks, and created
3726 macros to declare and implement thin (optionally static) functions
3727 that provide type-safety and avoid function pointer casting for the
3728 type-specific callbacks.
3731 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3733 [Veers Staats <staatsvr@asc.hpc.mil>,
3734 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3736 *) Reformat the FAQ so the different questions and answers can be divided
3737 in sections depending on the subject.
3740 *) Have the zlib compression code load ZLIB.DLL dynamically under
3744 *) New function BN_mod_sqrt for computing square roots modulo a prime
3745 (using the probabilistic Tonelli-Shanks algorithm unless
3746 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3747 be handled deterministically).
3748 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3750 *) Make BN_mod_inverse faster by explicitly handling small quotients
3751 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3752 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3755 *) New function BN_kronecker.
3758 *) Fix BN_gcd so that it works on negative inputs; the result is
3759 positive unless both parameters are zero.
3760 Previously something reasonably close to an infinite loop was
3761 possible because numbers could be growing instead of shrinking
3762 in the implementation of Euclid's algorithm.
3765 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3766 sign of the number in question.
3768 Fix BN_is_word(a,w) to work correctly for w == 0.
3770 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3771 because its test if the absolute value of 'a' equals 'w'.
3772 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3773 it exists mostly for use in the implementations of BN_is_zero(),
3774 BN_is_one(), and BN_is_word().
3777 *) New function BN_swap.
3780 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3781 the exponentiation functions are more likely to produce reasonable
3782 results on negative inputs.
3785 *) Change BN_mod_mul so that the result is always non-negative.
3786 Previously, it could be negative if one of the factors was negative;
3787 I don't think anyone really wanted that behaviour.
3790 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3791 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3792 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3793 and add new functions:
3802 BN_mod_lshift1_quick
3806 These functions always generate non-negative results.
3808 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3809 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3811 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3812 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3813 be reduced modulo m.
3814 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3817 The following entry accidentily appeared in the CHANGES file
3818 distributed with OpenSSL 0.9.7. The modifications described in
3819 it do *not* apply to OpenSSL 0.9.7.
3821 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3822 was actually never needed) and in BN_mul(). The removal in BN_mul()
3823 required a small change in bn_mul_part_recursive() and the addition
3824 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3825 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3826 bn_sub_words() and bn_add_words() except they take arrays with
3831 *) In 'openssl passwd', verify passwords read from the terminal
3832 unless the '-salt' option is used (which usually means that
3833 verification would just waste user's time since the resulting
3834 hash is going to be compared with some given password hash)
3835 or the new '-noverify' option is used.
3837 This is an incompatible change, but it does not affect
3838 non-interactive use of 'openssl passwd' (passwords on the command
3839 line, '-stdin' option, '-in ...' option) and thus should not
3843 *) Remove all references to RSAref, since there's no more need for it.
3846 *) Make DSO load along a path given through an environment variable
3847 (SHLIB_PATH) with shl_load().
3850 *) Constify the ENGINE code as a result of BIGNUM constification.
3851 Also constify the RSA code and most things related to it. In a
3852 few places, most notable in the depth of the ASN.1 code, ugly
3853 casts back to non-const were required (to be solved at a later
3857 *) Make it so the openssl application has all engines loaded by default.
3860 *) Constify the BIGNUM routines a little more.
3863 *) Add the following functions:
3865 ENGINE_load_cswift()
3867 ENGINE_load_atalla()
3869 ENGINE_load_builtin_engines()
3871 That way, an application can itself choose if external engines that
3872 are built-in in OpenSSL shall ever be used or not. The benefit is
3873 that applications won't have to be linked with libdl or other dso
3874 libraries unless it's really needed.
3876 Changed 'openssl engine' to load all engines on demand.
3877 Changed the engine header files to avoid the duplication of some
3878 declarations (they differed!).
3881 *) 'openssl engine' can now list capabilities.
3884 *) Better error reporting in 'openssl engine'.
3887 *) Never call load_dh_param(NULL) in s_server.
3890 *) Add engine application. It can currently list engines by name and
3891 identity, and test if they are actually available.
3894 *) Improve RPM specification file by forcing symbolic linking and making
3895 sure the installed documentation is also owned by root.root.
3896 [Damien Miller <djm@mindrot.org>]
3898 *) Give the OpenSSL applications more possibilities to make use of
3899 keys (public as well as private) handled by engines.
3902 *) Add OCSP code that comes from CertCo.
3905 *) Add VMS support for the Rijndael code.
3908 *) Added untested support for Nuron crypto accelerator.
3911 *) Add support for external cryptographic devices. This code was
3912 previously distributed separately as the "engine" branch.
3913 [Geoff Thorpe, Richard Levitte]
3915 *) Rework the filename-translation in the DSO code. It is now possible to
3916 have far greater control over how a "name" is turned into a filename
3917 depending on the operating environment and any oddities about the
3918 different shared library filenames on each system.
3921 *) Support threads on FreeBSD-elf in Configure.
3924 *) Fix for SHA1 assembly problem with MASM: it produces
3925 warnings about corrupt line number information when assembling
3926 with debugging information. This is caused by the overlapping
3928 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3931 NCONF_get_number() has no error checking at all. As a replacement,
3932 NCONF_get_number_e() is defined (_e for "error checking") and is
3933 promoted strongly. The old NCONF_get_number is kept around for
3934 binary backward compatibility.
3935 Make it possible for methods to load from something other than a BIO,
3936 by providing a function pointer that is given a name instead of a BIO.
3937 For example, this could be used to load configuration data from an
3941 *) Fix for non blocking accept BIOs. Added new I/O special reason
3942 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3943 with non blocking I/O was not possible because no retry code was
3944 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3948 *) Added the beginnings of Rijndael support.
3951 *) Fix for bug in DirectoryString mask setting. Add support for
3952 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3953 to allow certificate printing to more controllable, additional
3954 'certopt' option to 'x509' to allow new printing options to be
3958 *) Clean old EAY MD5 hack from e_os.h.
3961 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3963 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3964 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3965 [Joe Orton, Steve Henson]
3967 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3969 *) Fix additional bug revealed by the NISCC test suite:
3971 Stop bug triggering large recursion when presented with
3972 certain ASN.1 tags (CVE-2003-0851)
3975 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
3977 *) Fix various bugs revealed by running the NISCC test suite:
3979 Stop out of bounds reads in the ASN1 code when presented with
3980 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3982 If verify callback ignores invalid public key errors don't try to check
3983 certificate signature with the NULL public key.
3987 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3988 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3992 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3993 extra data after the compression methods not only for TLS 1.0
3994 but also for SSL 3.0 (as required by the specification).
3995 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3997 *) Change X509_certificate_type() to mark the key as exported/exportable
3998 when it's 512 *bits* long, not 512 bytes.
4001 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4003 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4004 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4005 a protocol version number mismatch like a decryption error
4006 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4009 *) Turn on RSA blinding by default in the default implementation
4010 to avoid a timing attack. Applications that don't want it can call
4011 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4012 They would be ill-advised to do so in most cases.
4013 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4015 *) Change RSA blinding code so that it works when the PRNG is not
4016 seeded (in this case, the secret RSA exponent is abused as
4017 an unpredictable seed -- if it is not unpredictable, there
4018 is no point in blinding anyway). Make RSA blinding thread-safe
4019 by remembering the creator's thread ID in rsa->blinding and
4020 having all other threads use local one-time blinding factors
4021 (this requires more computation than sharing rsa->blinding, but
4022 avoids excessive locking; and if an RSA object is not shared
4023 between threads, blinding will still be very fast).
4026 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4028 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4029 via timing by performing a MAC computation even if incorrrect
4030 block cipher padding has been found. This is a countermeasure
4031 against active attacks where the attacker has to distinguish
4032 between bad padding and a MAC verification error. (CVE-2003-0078)
4034 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4035 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4036 Martin Vuagnoux (EPFL, Ilion)]
4038 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4040 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4041 memory from it's contents. This is done with a counter that will
4042 place alternating values in each byte. This can be used to solve
4043 two issues: 1) the removal of calls to memset() by highly optimizing
4044 compilers, and 2) cleansing with other values than 0, since those can
4045 be read through on certain media, for example a swap space on disk.
4048 *) Bugfix: client side session caching did not work with external caching,
4049 because the session->cipher setting was not restored when reloading
4050 from the external cache. This problem was masked, when
4051 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4052 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4055 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4056 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4057 [Zeev Lieber <zeev-l@yahoo.com>]
4059 *) Undo an undocumented change introduced in 0.9.6e which caused
4060 repeated calls to OpenSSL_add_all_ciphers() and
4061 OpenSSL_add_all_digests() to be ignored, even after calling
4065 *) Change the default configuration reader to deal with last line not
4066 being properly terminated.
4069 *) Change X509_NAME_cmp() so it applies the special rules on handling
4070 DN values that are of type PrintableString, as well as RDNs of type
4071 emailAddress where the value has the type ia5String.
4072 [stefank@valicert.com via Richard Levitte]
4074 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4075 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4076 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4077 the bitwise-OR of the two for use by the majority of applications
4078 wanting this behaviour, and update the docs. The documented
4079 behaviour and actual behaviour were inconsistent and had been
4080 changing anyway, so this is more a bug-fix than a behavioural
4082 [Geoff Thorpe, diagnosed by Nadav Har'El]
4084 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4085 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4088 *) Fix initialization code race conditions in
4089 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4090 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4091 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4092 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4093 ssl2_get_cipher_by_char(),
4094 ssl3_get_cipher_by_char().
4095 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4097 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4098 the cached sessions are flushed, as the remove_cb() might use ex_data
4099 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4100 (see [openssl.org #212]).
4101 [Geoff Thorpe, Lutz Jaenicke]
4103 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4104 length, instead of the encoding length to d2i_ASN1_OBJECT.
4107 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4109 *) [In 0.9.6g-engine release:]
4110 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4111 [Lynn Gazis <lgazis@rainbow.com>]
4113 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4115 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4116 and get fix the header length calculation.
4117 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4118 Alon Kantor <alonk@checkpoint.com> (and others),
4121 *) Use proper error handling instead of 'assertions' in buffer
4122 overflow checks added in 0.9.6e. This prevents DoS (the
4123 assertions could call abort()).
4124 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4126 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4128 *) Add various sanity checks to asn1_get_length() to reject
4129 the ASN1 length bytes if they exceed sizeof(long), will appear
4130 negative or the content length exceeds the length of the
4132 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4134 *) Fix cipher selection routines: ciphers without encryption had no flags
4135 for the cipher strength set and where therefore not handled correctly
4136 by the selection routines (PR #130).
4139 *) Fix EVP_dsa_sha macro.
4143 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4144 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4145 that was added in OpenSSL 0.9.6d.
4147 As the countermeasure turned out to be incompatible with some
4148 broken SSL implementations, the new option is part of SSL_OP_ALL.
4149 SSL_OP_ALL is usually employed when compatibility with weird SSL
4150 implementations is desired (e.g. '-bugs' option to 's_client' and
4151 's_server'), so the new option is automatically set in many
4155 *) Changes in security patch:
4157 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4158 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4159 Air Force Materiel Command, USAF, under agreement number
4162 *) Add various sanity checks to asn1_get_length() to reject
4163 the ASN1 length bytes if they exceed sizeof(long), will appear
4164 negative or the content length exceeds the length of the
4165 supplied buffer. (CVE-2002-0659)
4166 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4168 *) Assertions for various potential buffer overflows, not known to
4170 [Ben Laurie (CHATS)]
4172 *) Various temporary buffers to hold ASCII versions of integers were
4173 too small for 64 bit platforms. (CVE-2002-0655)
4174 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4176 *) Remote buffer overflow in SSL3 protocol - an attacker could
4177 supply an oversized session ID to a client. (CVE-2002-0656)
4178 [Ben Laurie (CHATS)]
4180 *) Remote buffer overflow in SSL2 protocol - an attacker could
4181 supply an oversized client master key. (CVE-2002-0656)
4182 [Ben Laurie (CHATS)]
4184 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4186 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4187 encoded as NULL) with id-dsa-with-sha1.
4188 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4190 *) Check various X509_...() return values in apps/req.c.
4191 [Nils Larsch <nla@trustcenter.de>]
4193 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4194 an end-of-file condition would erronously be flagged, when the CRLF
4195 was just at the end of a processed block. The bug was discovered when
4196 processing data through a buffering memory BIO handing the data to a
4197 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4198 <ptsekov@syntrex.com> and Nedelcho Stanev.
4201 *) Implement a countermeasure against a vulnerability recently found
4202 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4203 before application data chunks to avoid the use of known IVs
4204 with data potentially chosen by the attacker.
4207 *) Fix length checks in ssl3_get_client_hello().
4210 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4211 to prevent ssl3_read_internal() from incorrectly assuming that
4212 ssl3_read_bytes() found application data while handshake
4213 processing was enabled when in fact s->s3->in_read_app_data was
4214 merely automatically cleared during the initial handshake.
4215 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4217 *) Fix object definitions for Private and Enterprise: they were not
4218 recognized in their shortname (=lowercase) representation. Extend
4219 obj_dat.pl to issue an error when using undefined keywords instead
4220 of silently ignoring the problem (Svenning Sorensen
4221 <sss@sss.dnsalias.net>).
4224 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4225 generators, i.e. generators other than 2 and 5. (Previously, the
4226 code did not properly initialise the 'add' and 'rem' values to
4227 BN_generate_prime().)
4229 In the new general case, we do not insist that 'generator' is
4230 actually a primitive root: This requirement is rather pointless;
4231 a generator of the order-q subgroup is just as good, if not
4235 *) Map new X509 verification errors to alerts. Discovered and submitted by
4236 Tom Wu <tom@arcot.com>.
4239 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4240 returning non-zero before the data has been completely received
4241 when using non-blocking I/O.
4242 [Bodo Moeller; problem pointed out by John Hughes]
4244 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4245 [Ben Laurie, Lutz Jaenicke]
4247 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4248 Yoram Zahavi <YoramZ@gilian.com>).
4251 *) Add information about CygWin 1.3 and on, and preserve proper
4252 configuration for the versions before that.
4253 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4255 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4256 check whether we deal with a copy of a session and do not delete from
4257 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4258 <izhar@checkpoint.com>.
4261 *) Do not store session data into the internal session cache, if it
4262 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4263 flag is set). Proposed by Aslam <aslam@funk.com>.
4266 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4270 *) [In 0.9.6d-engine release:]
4271 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4272 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4274 *) Add the configuration target linux-s390x.
4275 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4277 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4278 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4279 variable as an indication that a ClientHello message has been
4280 received. As the flag value will be lost between multiple
4281 invocations of ssl3_accept when using non-blocking I/O, the
4282 function may not be aware that a handshake has actually taken
4283 place, thus preventing a new session from being added to the
4286 To avoid this problem, we now set s->new_session to 2 instead of
4287 using a local variable.
4288 [Lutz Jaenicke, Bodo Moeller]
4290 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4291 if the SSL_R_LENGTH_MISMATCH error is detected.
4292 [Geoff Thorpe, Bodo Moeller]
4294 *) New 'shared_ldflag' column in Configure platform table.
4297 *) Fix EVP_CIPHER_mode macro.
4298 ["Dan S. Camper" <dan@bti.net>]
4300 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4301 type, we must throw them away by setting rr->length to 0.
4302 [D P Chang <dpc@qualys.com>]
4304 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4306 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4307 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4308 worked incorrectly for those cases where range = 10..._2 and
4309 3*range is two bits longer than range.)
4312 *) Only add signing time to PKCS7 structures if it is not already
4316 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4317 OBJ_ld_ce should be OBJ_id_ce.
4318 Also some ip-pda OIDs in crypto/objects/objects.txt were
4319 incorrect (cf. RFC 3039).
4320 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4322 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4323 returns early because it has nothing to do.
4324 [Andy Schneider <andy.schneider@bjss.co.uk>]
4326 *) [In 0.9.6c-engine release:]
4327 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4328 [Andy Schneider <andy.schneider@bjss.co.uk>]
4330 *) [In 0.9.6c-engine release:]
4331 Add support for Cryptographic Appliance's keyserver technology.
4332 (Use engine 'keyclient')
4333 [Cryptographic Appliances and Geoff Thorpe]
4335 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4336 is called via tools/c89.sh because arguments have to be
4337 rearranged (all '-L' options must appear before the first object
4339 [Richard Shapiro <rshapiro@abinitio.com>]
4341 *) [In 0.9.6c-engine release:]
4342 Add support for Broadcom crypto accelerator cards, backported
4344 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4346 *) [In 0.9.6c-engine release:]
4347 Add support for SureWare crypto accelerator cards from
4348 Baltimore Technologies. (Use engine 'sureware')
4349 [Baltimore Technologies and Mark Cox]
4351 *) [In 0.9.6c-engine release:]
4352 Add support for crypto accelerator cards from Accelerated
4353 Encryption Processing, www.aep.ie. (Use engine 'aep')
4354 [AEP Inc. and Mark Cox]
4356 *) Add a configuration entry for gcc on UnixWare.
4357 [Gary Benson <gbenson@redhat.com>]
4359 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4360 messages are stored in a single piece (fixed-length part and
4361 variable-length part combined) and fix various bugs found on the way.
4364 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4365 instead. BIO_gethostbyname() does not know what timeouts are
4366 appropriate, so entries would stay in cache even when they have
4368 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4370 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4371 faced with a pathologically small ClientHello fragment that does
4372 not contain client_version: Instead of aborting with an error,
4373 simply choose the highest available protocol version (i.e.,
4374 TLS 1.0 unless it is disabled). In practice, ClientHello
4375 messages are never sent like this, but this change gives us
4376 strictly correct behaviour at least for TLS.
4379 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4380 never resets s->method to s->ctx->method when called from within
4381 one of the SSL handshake functions.
4382 [Bodo Moeller; problem pointed out by Niko Baric]
4384 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4385 (sent using the client's version number) if client_version is
4386 smaller than the protocol version in use. Also change
4387 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4388 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4389 the client will at least see that alert.
4392 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4396 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4397 client receives HelloRequest while in a handshake.
4398 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4400 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4401 should end in 'break', not 'goto end' which circuments various
4402 cleanups done in state SSL_ST_OK. But session related stuff
4403 must be disabled for SSL_ST_OK in the case that we just sent a
4406 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4407 before just sending a HelloRequest.
4408 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4410 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4411 reveal whether illegal block cipher padding was found or a MAC
4412 verification error occured. (Neither SSLerr() codes nor alerts
4413 are directly visible to potential attackers, but the information
4414 may leak via logfiles.)
4416 Similar changes are not required for the SSL 2.0 implementation
4417 because the number of padding bytes is sent in clear for SSL 2.0,
4418 and the extra bytes are just ignored. However ssl/s2_pkt.c
4419 failed to verify that the purported number of padding bytes is in
4423 *) Add OpenUNIX-8 support including shared libraries
4424 (Boyd Lynn Gerber <gerberb@zenez.com>).
4427 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4428 'wristwatch attack' using huge encoding parameters (cf.
4429 James H. Manger's CRYPTO 2001 paper). Note that the
4430 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4431 encoding parameters and hence was not vulnerable.
4434 *) BN_sqr() bug fix.
4435 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4437 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4438 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4439 followed by modular reduction.
4440 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4442 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4443 equivalent based on BN_pseudo_rand() instead of BN_rand().
4446 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4447 This function was broken, as the check for a new client hello message
4448 to handle SGC did not allow these large messages.
4449 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4452 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4455 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4456 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
4459 *) Rework the configuration and shared library support for Tru64 Unix.
4460 The configuration part makes use of modern compiler features and
4461 still retains old compiler behavior for those that run older versions
4462 of the OS. The shared library support part includes a variant that
4463 uses the RPATH feature, and is available through the special
4464 configuration target "alpha-cc-rpath", which will never be selected
4466 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
4468 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
4469 with the same message size as in ssl3_get_certificate_request().
4470 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
4471 messages might inadvertently be reject as too long.
4472 [Petr Lampa <lampa@fee.vutbr.cz>]
4474 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
4477 *) Modified SSL library such that the verify_callback that has been set
4478 specificly for an SSL object with SSL_set_verify() is actually being
4479 used. Before the change, a verify_callback set with this function was
4480 ignored and the verify_callback() set in the SSL_CTX at the time of
4481 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
4482 to allow the necessary settings.
4485 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
4486 explicitly to NULL, as at least on Solaris 8 this seems not always to be
4487 done automatically (in contradiction to the requirements of the C
4488 standard). This made problems when used from OpenSSH.
4491 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
4492 dh->length and always used
4494 BN_rand_range(priv_key, dh->p).
4496 BN_rand_range() is not necessary for Diffie-Hellman, and this
4497 specific range makes Diffie-Hellman unnecessarily inefficient if
4498 dh->length (recommended exponent length) is much smaller than the
4499 length of dh->p. We could use BN_rand_range() if the order of
4500 the subgroup was stored in the DH structure, but we only have
4505 BN_rand(priv_key, l, ...)
4507 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
4513 RSA_eay_public_encrypt
4514 RSA_eay_private_decrypt
4515 RSA_eay_private_encrypt (signing)
4516 RSA_eay_public_decrypt (signature verification)
4518 (default implementations for RSA_public_encrypt,
4519 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
4520 always reject numbers >= n.
4523 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
4524 to synchronize access to 'locking_thread'. This is necessary on
4525 systems where access to 'locking_thread' (an 'unsigned long'
4526 variable) is not atomic.
4529 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
4530 *before* setting the 'crypto_lock_rand' flag. The previous code had
4531 a race condition if 0 is a valid thread ID.
4532 [Travis Vitek <vitek@roguewave.com>]
4534 *) Add support for shared libraries under Irix.
4535 [Albert Chin-A-Young <china@thewrittenword.com>]
4537 *) Add configuration option to build on Linux on both big-endian and
4539 [Ralf Baechle <ralf@uni-koblenz.de>]
4541 *) Add the possibility to create shared libraries on HP-UX.
4544 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
4546 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
4547 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
4548 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
4549 PRNG state recovery was possible based on the output of
4550 one PRNG request appropriately sized to gain knowledge on
4551 'md' followed by enough consecutive 1-byte PRNG requests
4552 to traverse all of 'state'.
4554 1. When updating 'md_local' (the current thread's copy of 'md')
4555 during PRNG output generation, hash all of the previous
4556 'md_local' value, not just the half used for PRNG output.
4558 2. Make the number of bytes from 'state' included into the hash
4559 independent from the number of PRNG bytes requested.
4561 The first measure alone would be sufficient to avoid
4562 Markku-Juhani's attack. (Actually it had never occurred
4563 to me that the half of 'md_local' used for chaining was the
4564 half from which PRNG output bytes were taken -- I had always
4565 assumed that the secret half would be used.) The second
4566 measure makes sure that additional data from 'state' is never
4567 mixed into 'md_local' in small portions; this heuristically
4568 further strengthens the PRNG.
4571 *) Fix crypto/bn/asm/mips3.s.
4574 *) When only the key is given to "enc", the IV is undefined. Print out
4575 an error message in this case.
4578 *) Handle special case when X509_NAME is empty in X509 printing routines.
4581 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
4582 positive and less than q.
4585 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
4586 used: it isn't thread safe and the add_lock_callback should handle
4588 [Paul Rose <Paul.Rose@bridge.com>]
4590 *) Verify that incoming data obeys the block size in
4591 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
4595 [Ulf Möller, Bodo Möller]
4597 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
4598 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
4599 when fixing the server behaviour for backwards-compatible 'client
4600 hello' messages. (Note that the attack is impractical against
4601 SSL 3.0 and TLS 1.0 anyway because length and version checking
4602 means that the probability of guessing a valid ciphertext is
4603 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
4606 Before 0.9.5, the countermeasure (hide the error by generating a
4607 random 'decryption result') did not work properly because
4608 ERR_clear_error() was missing, meaning that SSL_get_error() would
4609 detect the supposedly ignored error.
4611 Both problems are now fixed.
4614 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
4615 (previously it was 1024).
4618 *) Fix for compatibility mode trust settings: ignore trust settings
4619 unless some valid trust or reject settings are present.
4622 *) Fix for blowfish EVP: its a variable length cipher.
4625 *) Fix various bugs related to DSA S/MIME verification. Handle missing
4626 parameters in DSA public key structures and return an error in the
4627 DSA routines if parameters are absent.
4630 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
4631 in the current directory if neither $RANDFILE nor $HOME was set.
4632 RAND_file_name() in 0.9.6a returned NULL in this case. This has
4633 caused some confusion to Windows users who haven't defined $HOME.
4634 Thus RAND_file_name() is changed again: e_os.h can define a
4635 DEFAULT_HOME, which will be used if $HOME is not set.
4636 For Windows, we use "C:"; on other platforms, we still require
4637 environment variables.
4639 *) Move 'if (!initialized) RAND_poll()' into regions protected by
4640 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
4641 having multiple threads call RAND_poll() concurrently.
4644 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
4645 combination of a flag and a thread ID variable.
4646 Otherwise while one thread is in ssleay_rand_bytes (which sets the
4647 flag), *other* threads can enter ssleay_add_bytes without obeying
4648 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
4649 that they do not hold after the first thread unsets add_do_not_lock).
4652 *) Change bctest again: '-x' expressions are not available in all
4656 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
4658 *) Fix a couple of memory leaks in PKCS7_dataDecode()
4659 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
4661 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
4662 the default extension for executables, if any. Also, make the perl
4663 scripts that use symlink() to test if it really exists and use "cp"
4664 if it doesn't. All this made OpenSSL compilable and installable in
4668 *) Fix for asn1_GetSequence() for indefinite length constructed data.
4669 If SEQUENCE is length is indefinite just set c->slen to the total
4670 amount of data available.
4671 [Steve Henson, reported by shige@FreeBSD.org]
4672 [This change does not apply to 0.9.7.]
4674 *) Change bctest to avoid here-documents inside command substitution
4675 (workaround for FreeBSD /bin/sh bug).
4676 For compatibility with Ultrix, avoid shell functions (introduced
4677 in the bctest version that searches along $PATH).
4680 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
4681 with des_encrypt() defined on some operating systems, like Solaris
4685 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
4686 On the Importance of Eliminating Errors in Cryptographic
4687 Computations, J. Cryptology 14 (2001) 2, 101-119,
4688 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
4691 *) MIPS assembler BIGNUM division bug fix.
4694 *) Disabled incorrect Alpha assembler code.
4697 *) Fix PKCS#7 decode routines so they correctly update the length
4698 after reading an EOC for the EXPLICIT tag.
4700 [This change does not apply to 0.9.7.]
4702 *) Fix bug in PKCS#12 key generation routines. This was triggered
4703 if a 3DES key was generated with a 0 initial byte. Include
4704 PKCS12_BROKEN_KEYGEN compilation option to retain the old
4705 (but broken) behaviour.
4708 *) Enhance bctest to search for a working bc along $PATH and print
4710 [Tim Rice <tim@multitalents.net> via Richard Levitte]
4712 *) Fix memory leaks in err.c: free err_data string if necessary;
4713 don't write to the wrong index in ERR_set_error_data.
4716 *) Implement ssl23_peek (analogous to ssl23_read), which previously
4720 *) Replace rdtsc with _emit statements for VC++ version 5.
4721 [Jeremy Cooper <jeremy@baymoo.org>]
4723 *) Make it possible to reuse SSLv2 sessions.
4726 *) In copy_email() check for >= 0 as a return value for
4727 X509_NAME_get_index_by_NID() since 0 is a valid index.
4728 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
4730 *) Avoid coredump with unsupported or invalid public keys by checking if
4731 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
4732 PKCS7_verify() fails with non detached data.
4735 *) Don't use getenv in library functions when run as setuid/setgid.
4736 New function OPENSSL_issetugid().
4739 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
4740 due to incorrect handling of multi-threading:
4742 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
4744 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
4746 3. Count how many times MemCheck_off() has been called so that
4747 nested use can be treated correctly. This also avoids
4748 inband-signalling in the previous code (which relied on the
4749 assumption that thread ID 0 is impossible).
4752 *) Add "-rand" option also to s_client and s_server.
4755 *) Fix CPU detection on Irix 6.x.
4756 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
4757 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
4759 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
4762 [This change does not apply to 0.9.7.]
4764 *) Use the cached encoding of an X509_NAME structure rather than
4765 copying it. This is apparently the reason for the libsafe "errors"
4766 but the code is actually correct.
4769 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
4770 Bleichenbacher's DSA attack.
4771 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
4772 to be set and top=0 forces the highest bit to be set; top=-1 is new
4773 and leaves the highest bit random.
4774 [Ulf Moeller, Bodo Moeller]
4776 *) In the NCONF_...-based implementations for CONF_... queries
4777 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
4778 a temporary CONF structure with the data component set to NULL
4779 (which gives segmentation faults in lh_retrieve).
4780 Instead, use NULL for the CONF pointer in CONF_get_string and
4781 CONF_get_number (which may use environment variables) and directly
4782 return NULL from CONF_get_section.
4785 *) Fix potential buffer overrun for EBCDIC.
4788 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
4789 keyUsage if basicConstraints absent for a CA.
4792 *) Make SMIME_write_PKCS7() write mail header values with a format that
4793 is more generally accepted (no spaces before the semicolon), since
4794 some programs can't parse those values properly otherwise. Also make
4795 sure BIO's that break lines after each write do not create invalid
4799 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
4800 macros previously used would not encode an empty SEQUENCE OF
4801 and break the signature.
4803 [This change does not apply to 0.9.7.]
4805 *) Zero the premaster secret after deriving the master secret in
4809 *) Add some EVP_add_digest_alias registrations (as found in
4810 OpenSSL_add_all_digests()) to SSL_library_init()
4811 aka OpenSSL_add_ssl_algorithms(). This provides improved
4812 compatibility with peers using X.509 certificates
4813 with unconventional AlgorithmIdentifier OIDs.
4816 *) Fix for Irix with NO_ASM.
4817 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
4819 *) ./config script fixes.
4820 [Ulf Moeller, Richard Levitte]
4822 *) Fix 'openssl passwd -1'.
4825 *) Change PKCS12_key_gen_asc() so it can cope with non null
4826 terminated strings whose length is passed in the passlen
4827 parameter, for example from PEM callbacks. This was done
4828 by adding an extra length parameter to asc2uni().
4829 [Steve Henson, reported by <oddissey@samsung.co.kr>]
4831 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
4832 call failed, free the DSA structure.
4835 *) Fix to uni2asc() to cope with zero length Unicode strings.
4836 These are present in some PKCS#12 files.
4839 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
4840 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
4841 when writing a 32767 byte record.
4842 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
4844 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
4845 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
4847 (RSA objects have a reference count access to which is protected
4848 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
4849 so they are meant to be shared between threads.)
4850 [Bodo Moeller, Geoff Thorpe; original patch submitted by
4851 "Reddie, Steven" <Steven.Reddie@ca.com>]
4853 *) Fix a deadlock in CRYPTO_mem_leaks().
4856 *) Use better test patterns in bntest.
4859 *) rand_win.c fix for Borland C.
4862 *) BN_rshift bugfix for n == 0.
4865 *) Add a 'bctest' script that checks for some known 'bc' bugs
4866 so that 'make test' does not abort just because 'bc' is broken.
4869 *) Store verify_result within SSL_SESSION also for client side to
4870 avoid potential security hole. (Re-used sessions on the client side
4871 always resulted in verify_result==X509_V_OK, not using the original
4872 result of the server certificate verification.)
4875 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
4876 SSL3_RT_APPLICATION_DATA, return 0.
4877 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
4881 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
4882 releases, have been re-implemented by renaming the previous
4883 implementations of ssl2_read and ssl3_read to ssl2_read_internal
4884 and ssl3_read_internal, respectively, and adding 'peek' parameters
4885 to them. The new ssl[23]_{read,peek} functions are calls to
4886 ssl[23]_read_internal with the 'peek' flag set appropriately.
4887 A 'peek' parameter has also been added to ssl3_read_bytes, which
4888 does the actual work for ssl3_read_internal.
4891 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
4892 the method-specific "init()" handler. Also clean up ex_data after
4893 calling the method-specific "finish()" handler. Previously, this was
4894 happening the other way round.
4897 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
4898 The previous value, 12, was not always sufficient for BN_mod_exp().
4901 *) Make sure that shared libraries get the internal name engine with
4902 the full version number and not just 0. This should mark the
4903 shared libraries as not backward compatible. Of course, this should
4904 be changed again when we can guarantee backward binary compatibility.
4907 *) Fix typo in get_cert_by_subject() in by_dir.c
4908 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
4910 *) Rework the system to generate shared libraries:
4912 - Make note of the expected extension for the shared libraries and
4913 if there is a need for symbolic links from for example libcrypto.so.0
4914 to libcrypto.so.0.9.7. There is extended info in Configure for
4917 - Make as few rebuilds of the shared libraries as possible.
4919 - Still avoid linking the OpenSSL programs with the shared libraries.
4921 - When installing, install the shared libraries separately from the
4925 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
4927 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
4928 and not in SSL_clear because the latter is also used by the
4929 accept/connect functions; previously, the settings made by
4930 SSL_set_read_ahead would be lost during the handshake.
4931 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
4933 *) Correct util/mkdef.pl to be selective about disabled algorithms.
4934 Previously, it would create entries for disableed algorithms no
4938 *) Added several new manual pages for SSL_* function.
4941 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
4943 *) In ssl23_get_client_hello, generate an error message when faced
4944 with an initial SSL 3.0/TLS record that is too small to contain the
4945 first two bytes of the ClientHello message, i.e. client_version.
4946 (Note that this is a pathologic case that probably has never happened
4947 in real life.) The previous approach was to use the version number
4948 from the record header as a substitute; but our protocol choice
4949 should not depend on that one because it is not authenticated
4950 by the Finished messages.
4953 *) More robust randomness gathering functions for Windows.
4954 [Jeffrey Altman <jaltman@columbia.edu>]
4956 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
4957 not set then we don't setup the error code for issuer check errors
4958 to avoid possibly overwriting other errors which the callback does
4959 handle. If an application does set the flag then we assume it knows
4960 what it is doing and can handle the new informational codes
4964 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
4965 a general "ANY" type, as such it should be able to decode anything
4966 including tagged types. However it didn't check the class so it would
4967 wrongly interpret tagged types in the same way as their universal
4968 counterpart and unknown types were just rejected. Changed so that the
4969 tagged and unknown types are handled in the same way as a SEQUENCE:
4970 that is the encoding is stored intact. There is also a new type
4971 "V_ASN1_OTHER" which is used when the class is not universal, in this
4972 case we have no idea what the actual type is so we just lump them all
4976 *) On VMS, stdout may very well lead to a file that is written to
4977 in a record-oriented fashion. That means that every write() will
4978 write a separate record, which will be read separately by the
4979 programs trying to read from it. This can be very confusing.
4981 The solution is to put a BIO filter in the way that will buffer
4982 text until a linefeed is reached, and then write everything a
4983 line at a time, so every record written will be an actual line,
4984 not chunks of lines and not (usually doesn't happen, but I've
4985 seen it once) several lines in one record. BIO_f_linebuffer() is
4988 Currently, it's a VMS-only method, because that's where it has
4989 been tested well enough.
4992 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
4993 it can return incorrect results.
4994 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
4995 but it was in 0.9.6-beta[12].)
4998 *) Disable the check for content being present when verifying detached
4999 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5000 include zero length content when signing messages.
5003 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5004 BIO_ctrl (for BIO pairs).
5007 *) Add DSO method for VMS.
5010 *) Bug fix: Montgomery multiplication could produce results with the
5014 *) Add RPM specification openssl.spec and modify it to build three
5015 packages. The default package contains applications, application
5016 documentation and run-time libraries. The devel package contains
5017 include files, static libraries and function documentation. The
5018 doc package contains the contents of the doc directory. The original
5019 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5022 *) Add a large number of documentation files for many SSL routines.
5023 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5025 *) Add a configuration entry for Sony News 4.
5026 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5028 *) Don't set the two most significant bits to one when generating a
5029 random number < q in the DSA library.
5032 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5033 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5034 the underlying transport is blocking) if a handshake took place.
5035 (The default behaviour is needed by applications such as s_client
5036 and s_server that use select() to determine when to use SSL_read;
5037 but for applications that know in advance when to expect data, it
5038 just makes things more complicated.)
5041 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5045 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5046 work better on such systems.
5047 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5049 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5050 Update PKCS12_parse() so it copies the friendlyName and the
5051 keyid to the certificates aux info.
5054 *) Fix bug in PKCS7_verify() which caused an infinite loop
5055 if there was more than one signature.
5056 [Sven Uszpelkat <su@celocom.de>]
5058 *) Major change in util/mkdef.pl to include extra information
5059 about each symbol, as well as presentig variables as well
5060 as functions. This change means that there's n more need
5061 to rebuild the .num files when some algorithms are excluded.
5064 *) Allow the verify time to be set by an application,
5065 rather than always using the current time.
5068 *) Phase 2 verify code reorganisation. The certificate
5069 verify code now looks up an issuer certificate by a
5070 number of criteria: subject name, authority key id
5071 and key usage. It also verifies self signed certificates
5072 by the same criteria. The main comparison function is
5073 X509_check_issued() which performs these checks.
5075 Lot of changes were necessary in order to support this
5076 without completely rewriting the lookup code.
5078 Authority and subject key identifier are now cached.
5080 The LHASH 'certs' is X509_STORE has now been replaced
5081 by a STACK_OF(X509_OBJECT). This is mainly because an
5082 LHASH can't store or retrieve multiple objects with
5083 the same hash value.
5085 As a result various functions (which were all internal
5086 use only) have changed to handle the new X509_STORE
5087 structure. This will break anything that messed round
5088 with X509_STORE internally.
5090 The functions X509_STORE_add_cert() now checks for an
5091 exact match, rather than just subject name.
5093 The X509_STORE API doesn't directly support the retrieval
5094 of multiple certificates matching a given criteria, however
5095 this can be worked round by performing a lookup first
5096 (which will fill the cache with candidate certificates)
5097 and then examining the cache for matches. This is probably
5098 the best we can do without throwing out X509_LOOKUP
5099 entirely (maybe later...).
5101 The X509_VERIFY_CTX structure has been enhanced considerably.
5103 All certificate lookup operations now go via a get_issuer()
5104 callback. Although this currently uses an X509_STORE it
5105 can be replaced by custom lookups. This is a simple way
5106 to bypass the X509_STORE hackery necessary to make this
5107 work and makes it possible to use more efficient techniques
5108 in future. A very simple version which uses a simple
5109 STACK for its trusted certificate store is also provided
5110 using X509_STORE_CTX_trusted_stack().
5112 The verify_cb() and verify() callbacks now have equivalents
5113 in the X509_STORE_CTX structure.
5115 X509_STORE_CTX also has a 'flags' field which can be used
5116 to customise the verify behaviour.
5119 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5120 excludes S/MIME capabilities.
5123 *) When a certificate request is read in keep a copy of the
5124 original encoding of the signed data and use it when outputing
5125 again. Signatures then use the original encoding rather than
5126 a decoded, encoded version which may cause problems if the
5127 request is improperly encoded.
5130 *) For consistency with other BIO_puts implementations, call
5131 buffer_write(b, ...) directly in buffer_puts instead of calling
5134 In BIO_puts, increment b->num_write as in BIO_write.
5135 [Peter.Sylvester@EdelWeb.fr]
5137 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5138 BN_zero, we may not return a BIGNUM with an array consisting of
5142 *) Avoid calling abort() from within the library when problems are
5143 detected, except if preprocessor symbols have been defined
5144 (such as REF_CHECK, BN_DEBUG etc.).
5147 *) New openssl application 'rsautl'. This utility can be
5148 used for low level RSA operations. DER public key
5149 BIO/fp routines also added.
5152 *) New Configure entry and patches for compiling on QNX 4.
5153 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5155 *) A demo state-machine implementation was sponsored by
5156 Nuron (http://www.nuron.com/) and is now available in
5157 demos/state_machine.
5160 *) New options added to the 'dgst' utility for signature
5161 generation and verification.
5164 *) Unrecognized PKCS#7 content types are now handled via a
5165 catch all ASN1_TYPE structure. This allows unsupported
5166 types to be stored as a "blob" and an application can
5167 encode and decode it manually.
5170 *) Fix various signed/unsigned issues to make a_strex.c
5172 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5174 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5175 length if passed a buffer. ASN1_INTEGER_to_BN failed
5176 if passed a NULL BN and its argument was negative.
5177 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5179 *) Modification to PKCS#7 encoding routines to output definite
5180 length encoding. Since currently the whole structures are in
5181 memory there's not real point in using indefinite length
5182 constructed encoding. However if OpenSSL is compiled with
5183 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5186 *) Added BIO_vprintf() and BIO_vsnprintf().
5189 *) Added more prefixes to parse for in the the strings written
5190 through a logging bio, to cover all the levels that are available
5191 through syslog. The prefixes are now:
5193 PANIC, EMERG, EMR => LOG_EMERG
5194 ALERT, ALR => LOG_ALERT
5195 CRIT, CRI => LOG_CRIT
5196 ERROR, ERR => LOG_ERR
5197 WARNING, WARN, WAR => LOG_WARNING
5198 NOTICE, NOTE, NOT => LOG_NOTICE
5199 INFO, INF => LOG_INFO
5200 DEBUG, DBG => LOG_DEBUG
5202 and as before, if none of those prefixes are present at the
5203 beginning of the string, LOG_ERR is chosen.
5205 On Win32, the LOG_* levels are mapped according to this:
5207 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5208 LOG_WARNING => EVENTLOG_WARNING_TYPE
5209 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5213 *) Made it possible to reconfigure with just the configuration
5214 argument "reconf" or "reconfigure". The command line arguments
5215 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5216 and are retrieved from there when reconfiguring.
5220 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5222 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5225 *) The obj_dat.pl script was messing up the sorting of object
5226 names. The reason was that it compared the quoted version
5227 of strings as a result "OCSP" > "OCSP Signing" because
5228 " > SPACE. Changed script to store unquoted versions of
5229 names and add quotes on output. It was also omitting some
5230 names from the lookup table if they were given a default
5231 value (that is if SN is missing it is given the same
5232 value as LN and vice versa), these are now added on the
5233 grounds that if an object has a name we should be able to
5234 look it up. Finally added warning output when duplicate
5235 short or long names are found.
5238 *) Changes needed for Tandem NSK.
5239 [Scott Uroff <scott@xypro.com>]
5241 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5242 RSA_padding_check_SSLv23(), special padding was never detected
5243 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5244 version rollback attacks was not effective.
5246 In s23_clnt.c, don't use special rollback-attack detection padding
5247 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5248 client; similarly, in s23_srvr.c, don't do the rollback check if
5249 SSL 2.0 is the only protocol enabled in the server.
5252 *) Make it possible to get hexdumps of unprintable data with 'openssl
5253 asn1parse'. By implication, the functions ASN1_parse_dump() and
5254 BIO_dump_indent() are added.
5257 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5258 these print out strings and name structures based on various
5259 flags including RFC2253 support and proper handling of
5260 multibyte characters. Added options to the 'x509' utility
5261 to allow the various flags to be set.
5264 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5265 Also change the functions X509_cmp_current_time() and
5266 X509_gmtime_adj() work with an ASN1_TIME structure,
5267 this will enable certificates using GeneralizedTime in validity
5268 dates to be checked.
5271 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5272 negative public key encodings) on by default,
5273 NO_NEG_PUBKEY_BUG can be set to disable it.
5276 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5277 content octets. An i2c_ASN1_OBJECT is unnecessary because
5278 the encoding can be trivially obtained from the structure.
5281 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5282 not read locks (CRYPTO_r_[un]lock).
5285 *) A first attempt at creating official support for shared
5286 libraries through configuration. I've kept it so the
5287 default is static libraries only, and the OpenSSL programs
5288 are always statically linked for now, but there are
5289 preparations for dynamic linking in place.
5290 This has been tested on Linux and Tru64.
5293 *) Randomness polling function for Win9x, as described in:
5294 Peter Gutmann, Software Generation of Practically Strong
5298 *) Fix so PRNG is seeded in req if using an already existing
5302 *) New options to smime application. -inform and -outform
5303 allow alternative formats for the S/MIME message including
5304 PEM and DER. The -content option allows the content to be
5305 specified separately. This should allow things like Netscape
5306 form signing output easier to verify.
5309 *) Fix the ASN1 encoding of tags using the 'long form'.
5312 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5313 STRING types. These convert content octets to and from the
5314 underlying type. The actual tag and length octets are
5315 already assumed to have been read in and checked. These
5316 are needed because all other string types have virtually
5317 identical handling apart from the tag. By having versions
5318 of the ASN1 functions that just operate on content octets
5319 IMPLICIT tagging can be handled properly. It also allows
5320 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5321 and ASN1_INTEGER are identical apart from the tag.
5324 *) Change the handling of OID objects as follows:
5326 - New object identifiers are inserted in objects.txt, following
5327 the syntax given in objects.README.
5328 - objects.pl is used to process obj_mac.num and create a new
5330 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5333 This is currently kind of a hack, and the perl code in objects.pl
5334 isn't very elegant, but it works as I intended. The simplest way
5335 to check that it worked correctly is to look in obj_dat.h and
5336 check the array nid_objs and make sure the objects haven't moved
5337 around (this is important!). Additions are OK, as well as
5338 consistent name changes.
5341 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5344 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5345 The given file adds to whatever has already been seeded into the
5346 random pool through the RANDFILE configuration file option or
5347 environment variable, or the default random state file.
5350 *) mkstack.pl now sorts each macro group into lexical order.
5351 Previously the output order depended on the order the files
5352 appeared in the directory, resulting in needless rewriting
5356 *) Patches to make OpenSSL compile under Win32 again. Mostly
5357 work arounds for the VC++ problem that it treats func() as
5358 func(void). Also stripped out the parts of mkdef.pl that
5359 added extra typesafe functions: these no longer exist.
5362 *) Reorganisation of the stack code. The macros are now all
5363 collected in safestack.h . Each macro is defined in terms of
5364 a "stack macro" of the form SKM_<name>(type, a, b). The
5365 DEBUG_SAFESTACK is now handled in terms of function casts,
5366 this has the advantage of retaining type safety without the
5367 use of additional functions. If DEBUG_SAFESTACK is not defined
5368 then the non typesafe macros are used instead. Also modified the
5369 mkstack.pl script to handle the new form. Needs testing to see
5370 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5371 the default if no major problems. Similar behaviour for ASN1_SET_OF
5372 and PKCS12_STACK_OF.
5375 *) When some versions of IIS use the 'NET' form of private key the
5376 key derivation algorithm is different. Normally MD5(password) is
5377 used as a 128 bit RC4 key. In the modified case
5378 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5379 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5380 as the old Netscape_RSA functions except they have an additional
5381 'sgckey' parameter which uses the modified algorithm. Also added
5382 an -sgckey command line option to the rsa utility. Thanks to
5383 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5384 algorithm to openssl-dev.
5387 *) The evp_local.h macros were using 'c.##kname' which resulted in
5388 invalid expansion on some systems (SCO 5.0.5 for example).
5389 Corrected to 'c.kname'.
5390 [Phillip Porch <root@theporch.com>]
5392 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5393 a STACK of email addresses from a certificate or request, these look
5394 in the subject name and the subject alternative name extensions and
5395 omit any duplicate addresses.
5398 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5399 This makes DSA verification about 2 % faster.
5402 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5403 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5404 plus overhead for 1024 bit moduli).
5405 This makes exponentiations about 0.5 % faster for 1024 bit
5406 exponents (as measured by "openssl speed rsa2048").
5409 *) Rename memory handling macros to avoid conflicts with other
5411 Malloc => OPENSSL_malloc
5412 Malloc_locked => OPENSSL_malloc_locked
5413 Realloc => OPENSSL_realloc
5414 Free => OPENSSL_free
5417 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5418 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5421 *) CygWin32 support.
5422 [John Jarvie <jjarvie@newsguy.com>]
5424 *) The type-safe stack code has been rejigged. It is now only compiled
5425 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5426 by default all type-specific stack functions are "#define"d back to
5427 standard stack functions. This results in more streamlined output
5428 but retains the type-safety checking possibilities of the original
5432 *) The STACK code has been cleaned up, and certain type declarations
5433 that didn't make a lot of sense have been brought in line. This has
5434 also involved a cleanup of sorts in safestack.h to more correctly
5435 map type-safe stack functions onto their plain stack counterparts.
5436 This work has also resulted in a variety of "const"ifications of
5437 lots of the code, especially "_cmp" operations which should normally
5438 be prototyped with "const" parameters anyway.
5441 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5442 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5443 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5444 where all of 'md' is used each time the PRNG is used, but 'state'
5445 is used only indexed by a cyclic counter. As entropy may not be
5446 well distributed from the beginning, 'md' is important as a
5447 chaining variable. However, the output function chains only half
5448 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5449 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5450 in all of 'state' being rewritten, with the new values depending
5451 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5454 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5455 the handshake is continued after ssl_verify_cert_chain();
5456 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5457 can lead to 'unexplainable' connection aborts later.
5458 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
5460 *) Major EVP API cipher revision.
5461 Add hooks for extra EVP features. This allows various cipher
5462 parameters to be set in the EVP interface. Support added for variable
5463 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
5464 setting of RC2 and RC5 parameters.
5466 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
5469 Remove lots of duplicated code from the EVP library. For example *every*
5470 cipher init() function handles the 'iv' in the same way according to the
5471 cipher mode. They also all do nothing if the 'key' parameter is NULL and
5472 for CFB and OFB modes they zero ctx->num.
5474 New functionality allows removal of S/MIME code RC2 hack.
5476 Most of the routines have the same form and so can be declared in terms
5479 By shifting this to the top level EVP_CipherInit() it can be removed from
5480 all individual ciphers. If the cipher wants to handle IVs or keys
5481 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
5484 Change lots of functions like EVP_EncryptUpdate() to now return a
5485 value: although software versions of the algorithms cannot fail
5486 any installed hardware versions can.
5489 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
5490 this option is set, tolerate broken clients that send the negotiated
5491 protocol version number instead of the requested protocol version
5495 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
5496 i.e. non-zero for export ciphersuites, zero otherwise.
5497 Previous versions had this flag inverted, inconsistent with
5498 rsa_tmp_cb (..._TMP_RSA_CB).
5499 [Bodo Moeller; problem reported by Amit Chopra]
5501 *) Add missing DSA library text string. Work around for some IIS
5502 key files with invalid SEQUENCE encoding.
5505 *) Add a document (doc/standards.txt) that list all kinds of standards
5506 and so on that are implemented in OpenSSL.
5509 *) Enhance c_rehash script. Old version would mishandle certificates
5510 with the same subject name hash and wouldn't handle CRLs at all.
5511 Added -fingerprint option to crl utility, to support new c_rehash
5515 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
5518 *) Fix for SSL server purpose checking. Server checking was
5519 rejecting certificates which had extended key usage present
5520 but no ssl client purpose.
5521 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
5523 *) Make PKCS#12 code work with no password. The PKCS#12 spec
5524 is a little unclear about how a blank password is handled.
5525 Since the password in encoded as a BMPString with terminating
5526 double NULL a zero length password would end up as just the
5527 double NULL. However no password at all is different and is
5528 handled differently in the PKCS#12 key generation code. NS
5529 treats a blank password as zero length. MSIE treats it as no
5530 password on export: but it will try both on import. We now do
5531 the same: PKCS12_parse() tries zero length and no password if
5532 the password is set to "" or NULL (NULL is now a valid password:
5533 it wasn't before) as does the pkcs12 application.
5536 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
5537 perror when PEM_read_bio_X509_REQ fails, the error message must
5538 be obtained from the error queue.
5541 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
5542 it in ERR_remove_state if appropriate, and change ERR_get_state
5543 accordingly to avoid race conditions (this is necessary because
5544 thread_hash is no longer constant once set).
5547 *) Bugfix for linux-elf makefile.one.
5550 *) RSA_get_default_method() will now cause a default
5551 RSA_METHOD to be chosen if one doesn't exist already.
5552 Previously this was only set during a call to RSA_new()
5553 or RSA_new_method(NULL) meaning it was possible for
5554 RSA_get_default_method() to return NULL.
5557 *) Added native name translation to the existing DSO code
5558 that will convert (if the flag to do so is set) filenames
5559 that are sufficiently small and have no path information
5560 into a canonical native form. Eg. "blah" converted to
5561 "libblah.so" or "blah.dll" etc.
5564 *) New function ERR_error_string_n(e, buf, len) which is like
5565 ERR_error_string(e, buf), but writes at most 'len' bytes
5566 including the 0 terminator. For ERR_error_string_n, 'buf'
5568 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
5570 *) CONF library reworked to become more general. A new CONF
5571 configuration file reader "class" is implemented as well as a
5572 new functions (NCONF_*, for "New CONF") to handle it. The now
5573 old CONF_* functions are still there, but are reimplemented to
5574 work in terms of the new functions. Also, a set of functions
5575 to handle the internal storage of the configuration data is
5576 provided to make it easier to write new configuration file
5577 reader "classes" (I can definitely see something reading a
5578 configuration file in XML format, for example), called _CONF_*,
5579 or "the configuration storage API"...
5581 The new configuration file reading functions are:
5583 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
5584 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
5586 NCONF_default, NCONF_WIN32
5588 NCONF_dump_fp, NCONF_dump_bio
5590 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
5591 NCONF_new creates a new CONF object. This works in the same way
5592 as other interfaces in OpenSSL, like the BIO interface.
5593 NCONF_dump_* dump the internal storage of the configuration file,
5594 which is useful for debugging. All other functions take the same
5595 arguments as the old CONF_* functions wth the exception of the
5596 first that must be a `CONF *' instead of a `LHASH *'.
5598 To make it easer to use the new classes with the old CONF_* functions,
5599 the function CONF_set_default_method is provided.
5602 *) Add '-tls1' option to 'openssl ciphers', which was already
5603 mentioned in the documentation but had not been implemented.
5604 (This option is not yet really useful because even the additional
5605 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
5608 *) Initial DSO code added into libcrypto for letting OpenSSL (and
5609 OpenSSL-based applications) load shared libraries and bind to
5610 them in a portable way.
5611 [Geoff Thorpe, with contributions from Richard Levitte]
5613 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
5615 *) Make sure _lrotl and _lrotr are only used with MSVC.
5617 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
5618 (the default implementation of RAND_status).
5620 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
5621 to '-clrext' (= clear extensions), as intended and documented.
5622 [Bodo Moeller; inconsistency pointed out by Michael Attili
5625 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
5626 was larger than the MD block size.
5627 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
5629 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
5630 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
5631 using the passed key: if the passed key was a private key the result
5632 of X509_print(), for example, would be to print out all the private key
5636 *) des_quad_cksum() byte order bug fix.
5637 [Ulf Möller, using the problem description in krb4-0.9.7, where
5638 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
5640 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
5642 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
5644 *) For easily testing in shell scripts whether some command
5645 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
5646 returns with exit code 0 iff no command of the given name is available.
5647 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
5648 the output goes to stdout and nothing is printed to stderr.
5649 Additional arguments are always ignored.
5651 Since for each cipher there is a command of the same name,
5652 the 'no-cipher' compilation switches can be tested this way.
5654 ('openssl no-XXX' is not able to detect pseudo-commands such
5655 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
5658 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
5661 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
5662 is set; it will be thrown away anyway because each handshake creates
5664 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
5665 to parameters -- in previous versions (since OpenSSL 0.9.3) the
5666 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
5667 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
5670 *) New s_client option -ign_eof: EOF at stdin is ignored, and
5671 'Q' and 'R' lose their special meanings (quit/renegotiate).
5672 This is part of what -quiet does; unlike -quiet, -ign_eof
5673 does not suppress any output.
5676 *) Add compatibility options to the purpose and trust code. The
5677 purpose X509_PURPOSE_ANY is "any purpose" which automatically
5678 accepts a certificate or CA, this was the previous behaviour,
5679 with all the associated security issues.
5681 X509_TRUST_COMPAT is the old trust behaviour: only and
5682 automatically trust self signed roots in certificate store. A
5683 new trust setting X509_TRUST_DEFAULT is used to specify that
5684 a purpose has no associated trust setting and it should instead
5685 use the value in the default purpose.
5688 *) Fix the PKCS#8 DSA private key code so it decodes keys again
5689 and fix a memory leak.
5692 *) In util/mkerr.pl (which implements 'make errors'), preserve
5693 reason strings from the previous version of the .c file, as
5694 the default to have only downcase letters (and digits) in
5695 automatically generated reasons codes is not always appropriate.
5698 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
5699 using strerror. Previously, ERR_reason_error_string() returned
5700 library names as reason strings for SYSerr; but SYSerr is a special
5701 case where small numbers are errno values, not library numbers.
5704 *) Add '-dsaparam' option to 'openssl dhparam' application. This
5705 converts DSA parameters into DH parameters. (When creating parameters,
5706 DSA_generate_parameters is used.)
5709 *) Include 'length' (recommended exponent length) in C code generated
5710 by 'openssl dhparam -C'.
5713 *) The second argument to set_label in perlasm was already being used
5714 so couldn't be used as a "file scope" flag. Moved to third argument
5718 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
5719 instead of RAND_bytes for encryption IVs and salts.
5722 *) Include RAND_status() into RAND_METHOD instead of implementing
5723 it only for md_rand.c Otherwise replacing the PRNG by calling
5724 RAND_set_rand_method would be impossible.
5727 *) Don't let DSA_generate_key() enter an infinite loop if the random
5728 number generation fails.
5731 *) New 'rand' application for creating pseudo-random output.
5734 *) Added configuration support for Linux/IA64
5735 [Rolf Haberrecker <rolf@suse.de>]
5737 *) Assembler module support for Mingw32.
5740 *) Shared library support for HPUX (in shlib/).
5741 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
5743 *) Shared library support for Solaris gcc.
5744 [Lutz Behnke <behnke@trustcenter.de>]
5746 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
5748 *) PKCS7_encrypt() was adding text MIME headers twice because they
5749 were added manually and by SMIME_crlf_copy().
5752 *) In bntest.c don't call BN_rand with zero bits argument.
5753 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
5755 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
5756 case was implemented. This caused BN_div_recp() to fail occasionally.
5759 *) Add an optional second argument to the set_label() in the perl
5760 assembly language builder. If this argument exists and is set
5761 to 1 it signals that the assembler should use a symbol whose
5762 scope is the entire file, not just the current function. This
5763 is needed with MASM which uses the format label:: for this scope.
5764 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
5766 *) Change the ASN1 types so they are typedefs by default. Before
5767 almost all types were #define'd to ASN1_STRING which was causing
5768 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
5772 *) Change names of new functions to the new get1/get0 naming
5773 convention: After 'get1', the caller owns a reference count
5774 and has to call ..._free; 'get0' returns a pointer to some
5775 data structure without incrementing reference counters.
5776 (Some of the existing 'get' functions increment a reference
5777 counter, some don't.)
5778 Similarly, 'set1' and 'add1' functions increase reference
5779 counters or duplicate objects.
5782 *) Allow for the possibility of temp RSA key generation failure:
5783 the code used to assume it always worked and crashed on failure.
5786 *) Fix potential buffer overrun problem in BIO_printf().
5787 [Ulf Möller, using public domain code by Patrick Powell; problem
5788 pointed out by David Sacerdote <das33@cornell.edu>]
5790 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
5791 RAND_egd() and RAND_status(). In the command line application,
5792 the EGD socket can be specified like a seed file using RANDFILE
5796 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
5797 Some CAs (e.g. Verisign) distribute certificates in this form.
5800 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
5801 list to exclude them. This means that no special compilation option
5802 is needed to use anonymous DH: it just needs to be included in the
5806 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
5807 EVP_MD_type. The old functionality is available in a new macro called
5808 EVP_MD_md(). Change code that uses it and update docs.
5811 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
5812 where the 'void *' argument is replaced by a function pointer argument.
5813 Previously 'void *' was abused to point to functions, which works on
5814 many platforms, but is not correct. As these functions are usually
5815 called by macros defined in OpenSSL header files, most source code
5816 should work without changes.
5819 *) <openssl/opensslconf.h> (which is created by Configure) now contains
5820 sections with information on -D... compiler switches used for
5821 compiling the library so that applications can see them. To enable
5822 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
5823 must be defined. E.g.,
5824 #define OPENSSL_ALGORITHM_DEFINES
5825 #include <openssl/opensslconf.h>
5826 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
5827 [Richard Levitte, Ulf and Bodo Möller]
5829 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
5833 *) Change the 'other' type in certificate aux info to a STACK_OF
5834 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
5835 the required ASN1 format: arbitrary types determined by an OID.
5838 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
5839 argument to 'req'. This is not because the function is newer or
5840 better than others it just uses the work 'NEW' in the certificate
5841 request header lines. Some software needs this.
5844 *) Reorganise password command line arguments: now passwords can be
5845 obtained from various sources. Delete the PEM_cb function and make
5846 it the default behaviour: i.e. if the callback is NULL and the
5847 usrdata argument is not NULL interpret it as a null terminated pass
5848 phrase. If usrdata and the callback are NULL then the pass phrase
5849 is prompted for as usual.
5852 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
5853 the support is automatically enabled. The resulting binaries will
5854 autodetect the card and use it if present.
5855 [Ben Laurie and Compaq Inc.]
5857 *) Work around for Netscape hang bug. This sends certificate request
5858 and server done in one record. Since this is perfectly legal in the
5859 SSL/TLS protocol it isn't a "bug" option and is on by default. See
5860 the bugs/SSLv3 entry for more info.
5863 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
5866 *) Add -rand argument to smime and pkcs12 applications and read/write
5870 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
5873 *) Add command line password options to the remaining applications.
5876 *) Bug fix for BN_div_recp() for numerators with an even number of
5880 *) More tests in bntest.c, and changed test_bn output.
5883 *) ./config recognizes MacOS X now.
5886 *) Bug fix for BN_div() when the first words of num and divsor are
5887 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
5890 *) Add support for various broken PKCS#8 formats, and command line
5891 options to produce them.
5894 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
5895 get temporary BIGNUMs from a BN_CTX.
5898 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
5902 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
5903 include a #define from the old name to the new. The original intent
5904 was that statically linked binaries could for example just call
5905 SSLeay_add_all_ciphers() to just add ciphers to the table and not
5906 link with digests. This never worked becayse SSLeay_add_all_digests()
5907 and SSLeay_add_all_ciphers() were in the same source file so calling
5908 one would link with the other. They are now in separate source files.
5911 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
5914 *) Use a less unusual form of the Miller-Rabin primality test (it used
5915 a binary algorithm for exponentiation integrated into the Miller-Rabin
5916 loop, our standard modexp algorithms are faster).
5919 *) Support for the EBCDIC character set completed.
5920 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
5922 *) Source code cleanups: use const where appropriate, eliminate casts,
5923 use void * instead of char * in lhash.
5926 *) Bugfix: ssl3_send_server_key_exchange was not restartable
5927 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
5928 this the server could overwrite ephemeral keys that the client
5932 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
5933 using 50 iterations of the Rabin-Miller test.
5935 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
5936 iterations of the Rabin-Miller test as required by the appendix
5937 to FIPS PUB 186[-1]) instead of DSA_is_prime.
5938 As BN_is_prime_fasttest includes trial division, DSA parameter
5939 generation becomes much faster.
5941 This implies a change for the callback functions in DSA_is_prime
5942 and DSA_generate_parameters: The callback function is called once
5943 for each positive witness in the Rabin-Miller test, not just
5944 occasionally in the inner loop; and the parameters to the
5945 callback function now provide an iteration count for the outer
5946 loop rather than for the current invocation of the inner loop.
5947 DSA_generate_parameters additionally can call the callback
5948 function with an 'iteration count' of -1, meaning that a
5949 candidate has passed the trial division test (when q is generated
5950 from an application-provided seed, trial division is skipped).
5953 *) New function BN_is_prime_fasttest that optionally does trial
5954 division before starting the Rabin-Miller test and has
5955 an additional BN_CTX * argument (whereas BN_is_prime always
5956 has to allocate at least one BN_CTX).
5957 'callback(1, -1, cb_arg)' is called when a number has passed the
5958 trial division stage.
5961 *) Fix for bug in CRL encoding. The validity dates weren't being handled
5965 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
5968 *) New function BN_pseudo_rand().
5971 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
5972 bignum version of BN_from_montgomery() with the working code from
5973 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
5977 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
5978 made it impossible to use the same SSL_SESSION data structure in
5979 SSL2 clients in multiple threads.
5982 *) The return value of RAND_load_file() no longer counts bytes obtained
5983 by stat(). RAND_load_file(..., -1) is new and uses the complete file
5984 to seed the PRNG (previously an explicit byte count was required).
5985 [Ulf Möller, Bodo Möller]
5987 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
5988 used (char *) instead of (void *) and had casts all over the place.
5991 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
5994 *) Retain source code compatibility for BN_prime_checks macro:
5995 BN_is_prime(..., BN_prime_checks, ...) now uses
5996 BN_prime_checks_for_size to determine the appropriate number of
5997 Rabin-Miller iterations.
6000 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6001 DH_CHECK_P_NOT_SAFE_PRIME.
6002 (Check if this is true? OpenPGP calls them "strong".)
6005 *) Merge the functionality of "dh" and "gendh" programs into a new program
6006 "dhparam". The old programs are retained for now but will handle DH keys
6007 (instead of parameters) in future.
6010 *) Make the ciphers, s_server and s_client programs check the return values
6011 when a new cipher list is set.
6014 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6015 ciphers. Before when the 56bit ciphers were enabled the sorting was
6018 The syntax for the cipher sorting has been extended to support sorting by
6019 cipher-strength (using the strength_bits hard coded in the tables).
6020 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6022 Fix a bug in the cipher-command parser: when supplying a cipher command
6023 string with an "undefined" symbol (neither command nor alphanumeric
6024 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6025 an error is flagged.
6027 Due to the strength-sorting extension, the code of the
6028 ssl_create_cipher_list() function was completely rearranged. I hope that
6029 the readability was also increased :-)
6030 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6032 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6033 for the first serial number and places 2 in the serial number file. This
6034 avoids problems when the root CA is created with serial number zero and
6035 the first user certificate has the same issuer name and serial number
6039 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6040 the new code. Add documentation for this stuff.
6043 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6044 X509_*() to X509at_*() on the grounds that they don't handle X509
6045 structures and behave in an analagous way to the X509v3 functions:
6046 they shouldn't be called directly but wrapper functions should be used
6049 So we also now have some wrapper functions that call the X509at functions
6050 when passed certificate requests. (TO DO: similar things can be done with
6051 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6052 things. Some of these need some d2i or i2d and print functionality
6053 because they handle more complex structures.)
6056 *) Add missing #ifndefs that caused missing symbols when building libssl
6057 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6058 NO_RSA in ssl/s2*.c.
6059 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6061 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6062 has a return value which indicates the quality of the random data
6063 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6064 error queue. New function RAND_pseudo_bytes() generates output that is
6065 guaranteed to be unique but not unpredictable. RAND_add is like
6066 RAND_seed, but takes an extra argument for an entropy estimate
6067 (RAND_seed always assumes full entropy).
6070 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6071 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6072 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6073 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6074 false-positive rate of at most 2^-80 for random input.
6077 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6080 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6081 in the 0.9.5 release), this returns the chain
6082 from an X509_CTX structure with a dup of the stack and all
6083 the X509 reference counts upped: so the stack will exist
6084 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6087 Also make SSL_SESSION_print() print out the verify return
6091 *) Add manpage for the pkcs12 command. Also change the default
6092 behaviour so MAC iteration counts are used unless the new
6093 -nomaciter option is used. This improves file security and
6094 only older versions of MSIE (4.0 for example) need it.
6097 *) Honor the no-xxx Configure options when creating .DEF files.
6100 *) Add PKCS#10 attributes to field table: challengePassword,
6101 unstructuredName and unstructuredAddress. These are taken from
6102 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6103 international characters are used.
6105 More changes to X509_ATTRIBUTE code: allow the setting of types
6106 based on strings. Remove the 'loc' parameter when adding
6107 attributes because these will be a SET OF encoding which is sorted
6111 *) Initial changes to the 'req' utility to allow request generation
6112 automation. This will allow an application to just generate a template
6113 file containing all the field values and have req construct the
6116 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6117 used all over the place including certificate requests and PKCS#7
6118 structures. They are currently handled manually where necessary with
6119 some primitive wrappers for PKCS#7. The new functions behave in a
6120 manner analogous to the X509 extension functions: they allow
6121 attributes to be looked up by NID and added.
6123 Later something similar to the X509V3 code would be desirable to
6124 automatically handle the encoding, decoding and printing of the
6125 more complex types. The string types like challengePassword can
6126 be handled by the string table functions.
6128 Also modified the multi byte string table handling. Now there is
6129 a 'global mask' which masks out certain types. The table itself
6130 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6131 is useful when for example there is only one permissible type
6132 (as in countryName) and using the mask might result in no valid
6136 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6137 SSL_get_peer_finished to allow applications to obtain the latest
6138 Finished messages sent to the peer or expected from the peer,
6139 respectively. (SSL_get_peer_finished is usually the Finished message
6140 actually received from the peer, otherwise the protocol will be aborted.)
6142 As the Finished message are message digests of the complete handshake
6143 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6144 be used for external authentication procedures when the authentication
6145 provided by SSL/TLS is not desired or is not enough.
6148 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6149 the host supports BWX extension and if Compaq C is present on the
6150 $PATH. Just exploiting of the BWX extension results in 20-30%
6151 performance kick for some algorithms, e.g. DES and RC4 to mention
6152 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6156 *) Add support for MS "fast SGC". This is arguably a violation of the
6157 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6158 weak crypto and after checking the certificate is SGC a second one
6159 with strong crypto. MS SGC stops the first handshake after receiving
6160 the server certificate message and sends a second client hello. Since
6161 a server will typically do all the time consuming operations before
6162 expecting any further messages from the client (server key exchange
6163 is the most expensive) there is little difference between the two.
6165 To get OpenSSL to support MS SGC we have to permit a second client
6166 hello message after we have sent server done. In addition we have to
6167 reset the MAC if we do get this second client hello.
6170 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6171 if a DER encoded private key is RSA or DSA traditional format. Changed
6172 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6173 format DER encoded private key. Newer code should use PKCS#8 format which
6174 has the key type encoded in the ASN1 structure. Added DER private key
6175 support to pkcs8 application.
6178 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6179 ciphersuites has been selected (as required by the SSL 3/TLS 1
6180 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6181 is set, we interpret this as a request to violate the specification
6182 (the worst that can happen is a handshake failure, and 'correct'
6183 behaviour would result in a handshake failure anyway).
6186 *) In SSL_CTX_add_session, take into account that there might be multiple
6187 SSL_SESSION structures with the same session ID (e.g. when two threads
6188 concurrently obtain them from an external cache).
6189 The internal cache can handle only one SSL_SESSION with a given ID,
6190 so if there's a conflict, we now throw out the old one to achieve
6194 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6195 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6196 some routines that use cipher OIDs: some ciphers do not have OIDs
6197 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6201 *) Simplify the trust setting structure and code. Now we just have
6202 two sequences of OIDs for trusted and rejected settings. These will
6203 typically have values the same as the extended key usage extension
6204 and any application specific purposes.
6206 The trust checking code now has a default behaviour: it will just
6207 check for an object with the same NID as the passed id. Functions can
6208 be provided to override either the default behaviour or the behaviour
6209 for a given id. SSL client, server and email already have functions
6210 in place for compatibility: they check the NID and also return "trusted"
6211 if the certificate is self signed.
6214 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6215 traditional format into an EVP_PKEY structure.
6218 *) Add a password callback function PEM_cb() which either prompts for
6219 a password if usr_data is NULL or otherwise assumes it is a null
6220 terminated password. Allow passwords to be passed on command line
6221 environment or config files in a few more utilities.
6224 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6225 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6226 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6227 Update documentation.
6230 *) Support for ASN1 "NULL" type. This could be handled before by using
6231 ASN1_TYPE but there wasn't any function that would try to read a NULL
6232 and produce an error if it couldn't. For compatibility we also have
6233 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6234 don't allocate anything because they don't need to.
6237 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6239 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6241 *) Rebuild of the memory allocation routines used by OpenSSL code and
6242 possibly others as well. The purpose is to make an interface that
6243 provide hooks so anyone can build a separate set of allocation and
6244 deallocation routines to be used by OpenSSL, for example memory
6245 pool implementations, or something else, which was previously hard
6246 since Malloc(), Realloc() and Free() were defined as macros having
6247 the values malloc, realloc and free, respectively (except for Win32
6248 compilations). The same is provided for memory debugging code.
6249 OpenSSL already comes with functionality to find memory leaks, but
6250 this gives people a chance to debug other memory problems.
6252 With these changes, a new set of functions and macros have appeared:
6254 CRYPTO_set_mem_debug_functions() [F]
6255 CRYPTO_get_mem_debug_functions() [F]
6256 CRYPTO_dbg_set_options() [F]
6257 CRYPTO_dbg_get_options() [F]
6258 CRYPTO_malloc_debug_init() [M]
6260 The memory debug functions are NULL by default, unless the library
6261 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6262 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6263 gives the standard debugging functions that come with OpenSSL) or
6264 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6265 provided by the library user) must be used. When the standard
6266 debugging functions are used, CRYPTO_dbg_set_options can be used to
6267 request additional information:
6268 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6269 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6271 Also, things like CRYPTO_set_mem_functions will always give the
6272 expected result (the new set of functions is used for allocation
6273 and deallocation) at all times, regardless of platform and compiler
6276 To finish it up, some functions that were never use in any other
6277 way than through macros have a new API and new semantic:
6280 CRYPTO_dbg_realloc()
6283 All macros of value have retained their old syntax.
6284 [Richard Levitte and Bodo Moeller]
6286 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6287 ordering of SMIMECapabilities wasn't in "strength order" and there
6288 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6292 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6293 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6294 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6296 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6297 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6298 functionality to handle multipart/signed properly) and a utility
6299 called 'smime' to call all this stuff. This is based on code I
6300 originally wrote for Celo who have kindly allowed it to be
6301 included in OpenSSL.
6304 *) Add variants des_set_key_checked and des_set_key_unchecked of
6305 des_set_key (aka des_key_sched). Global variable des_check_key
6306 decides which of these is called by des_set_key; this way
6307 des_check_key behaves as it always did, but applications and
6308 the library itself, which was buggy for des_check_key == 1,
6309 have a cleaner way to pick the version they need.
6312 *) New function PKCS12_newpass() which changes the password of a
6316 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6317 dynamic mix. In both cases the ids can be used as an index into the
6318 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6319 functions so they accept a list of the field values and the
6320 application doesn't need to directly manipulate the X509_TRUST
6324 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6328 *) Modify the way the V3 extension code looks up extensions. This now
6329 works in a similar way to the object code: we have some "standard"
6330 extensions in a static table which is searched with OBJ_bsearch()
6331 and the application can add dynamic ones if needed. The file
6332 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6333 updated whenever a new extension is added to the core code and kept
6334 in ext_nid order. There is a simple program 'tabtest.c' which checks
6335 this. New extensions are not added too often so this file can readily
6336 be maintained manually.
6338 There are two big advantages in doing things this way. The extensions
6339 can be looked up immediately and no longer need to be "added" using
6340 X509V3_add_standard_extensions(): this function now does nothing.
6341 [Side note: I get *lots* of email saying the extension code doesn't
6342 work because people forget to call this function]
6343 Also no dynamic allocation is done unless new extensions are added:
6344 so if we don't add custom extensions there is no need to call
6345 X509V3_EXT_cleanup().
6348 *) Modify enc utility's salting as follows: make salting the default. Add a
6349 magic header, so unsalted files fail gracefully instead of just decrypting
6350 to garbage. This is because not salting is a big security hole, so people
6351 should be discouraged from doing it.
6354 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6355 digest to be passed on the command line but it only used this
6356 parameter when signing a certificate. Modified so all relevant
6357 operations are affected by the digest parameter including the
6358 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6359 DSA key was used because it didn't fix the digest.
6362 *) Initial certificate chain verify code. Currently tests the untrusted
6363 certificates for consistency with the verify purpose (which is set
6364 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6366 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6367 this is because it will reject chains with invalid extensions whereas
6368 every previous version of OpenSSL and SSLeay made no checks at all.
6370 Trust code: checks the root CA for the relevant trust settings. Trust
6371 settings have an initial value consistent with the verify purpose: e.g.
6372 if the verify purpose is for SSL client use it expects the CA to be
6373 trusted for SSL client use. However the default value can be changed to
6374 permit custom trust settings: one example of this would be to only trust
6375 certificates from a specific "secure" set of CAs.
6377 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6378 which should be used for version portability: especially since the
6379 verify structure is likely to change more often now.
6381 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6382 to set them. If not set then assume SSL clients will verify SSL servers
6385 Two new options to the verify program: -untrusted allows a set of
6386 untrusted certificates to be passed in and -purpose which sets the
6387 intended purpose of the certificate. If a purpose is set then the
6388 new chain verify code is used to check extension consistency.
6391 *) Support for the authority information access extension.
6394 *) Modify RSA and DSA PEM read routines to transparently handle
6395 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6396 public keys in a format compatible with certificate
6397 SubjectPublicKeyInfo structures. Unfortunately there were already
6398 functions called *_PublicKey_* which used various odd formats so
6399 these are retained for compatibility: however the DSA variants were
6400 never in a public release so they have been deleted. Changed dsa/rsa
6401 utilities to handle the new format: note no releases ever handled public
6402 keys so we should be OK.
6404 The primary motivation for this change is to avoid the same fiasco
6405 that dogs private keys: there are several incompatible private key
6406 formats some of which are standard and some OpenSSL specific and
6407 require various evil hacks to allow partial transparent handling and
6408 even then it doesn't work with DER formats. Given the option anything
6409 other than PKCS#8 should be dumped: but the other formats have to
6410 stay in the name of compatibility.
6412 With public keys and the benefit of hindsight one standard format
6413 is used which works with EVP_PKEY, RSA or DSA structures: though
6414 it clearly returns an error if you try to read the wrong kind of key.
6416 Added a -pubkey option to the 'x509' utility to output the public key.
6417 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6418 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6419 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6420 that do the same as the EVP_PKEY_assign_*() except they up the
6421 reference count of the added key (they don't "swallow" the
6425 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6426 CRLs would fail if the file contained no certificates or no CRLs:
6427 added a new function to read in both types and return the number
6428 read: this means that if none are read it will be an error. The
6429 DER versions of the certificate and CRL reader would always fail
6430 because it isn't possible to mix certificates and CRLs in DER format
6431 without choking one or the other routine. Changed this to just read
6432 a certificate: this is the best we can do. Also modified the code
6433 in apps/verify.c to take notice of return codes: it was previously
6434 attempting to read in certificates from NULL pointers and ignoring
6435 any errors: this is one reason why the cert and CRL reader seemed
6436 to work. It doesn't check return codes from the default certificate
6437 routines: these may well fail if the certificates aren't installed.
6440 *) Code to support otherName option in GeneralName.
6443 *) First update to verify code. Change the verify utility
6444 so it warns if it is passed a self signed certificate:
6445 for consistency with the normal behaviour. X509_verify
6446 has been modified to it will now verify a self signed
6447 certificate if *exactly* the same certificate appears
6448 in the store: it was previously impossible to trust a
6449 single self signed certificate. This means that:
6450 openssl verify ss.pem
6451 now gives a warning about a self signed certificate but
6452 openssl verify -CAfile ss.pem ss.pem
6456 *) For servers, store verify_result in SSL_SESSION data structure
6457 (and add it to external session representation).
6458 This is needed when client certificate verifications fails,
6459 but an application-provided verification callback (set by
6460 SSL_CTX_set_cert_verify_callback) allows accepting the session
6461 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
6462 but returns 1): When the session is reused, we have to set
6463 ssl->verify_result to the appropriate error code to avoid
6465 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
6467 *) Fix a bug in the new PKCS#7 code: it didn't consider the
6468 case in PKCS7_dataInit() where the signed PKCS7 structure
6469 didn't contain any existing data because it was being created.
6470 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
6472 *) Add a salt to the key derivation routines in enc.c. This
6473 forms the first 8 bytes of the encrypted file. Also add a
6474 -S option to allow a salt to be input on the command line.
6477 *) New function X509_cmp(). Oddly enough there wasn't a function
6478 to compare two certificates. We do this by working out the SHA1
6479 hash and comparing that. X509_cmp() will be needed by the trust
6483 *) SSL_get1_session() is like SSL_get_session(), but increments
6484 the reference count in the SSL_SESSION returned.
6485 [Geoff Thorpe <geoff@eu.c2.net>]
6487 *) Fix for 'req': it was adding a null to request attributes.
6488 Also change the X509_LOOKUP and X509_INFO code to handle
6489 certificate auxiliary information.
6492 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
6496 *) Add the possibility to add extra information to the memory leak
6497 detecting output, to form tracebacks, showing from where each
6498 allocation was originated: CRYPTO_push_info("constant string") adds
6499 the string plus current file name and line number to a per-thread
6500 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
6501 is like calling CYRPTO_pop_info() until the stack is empty.
6502 Also updated memory leak detection code to be multi-thread-safe.
6505 *) Add options -text and -noout to pkcs7 utility and delete the
6506 encryption options which never did anything. Update docs.
6509 *) Add options to some of the utilities to allow the pass phrase
6510 to be included on either the command line (not recommended on
6511 OSes like Unix) or read from the environment. Update the
6512 manpages and fix a few bugs.
6515 *) Add a few manpages for some of the openssl commands.
6518 *) Fix the -revoke option in ca. It was freeing up memory twice,
6519 leaking and not finding already revoked certificates.
6522 *) Extensive changes to support certificate auxiliary information.
6523 This involves the use of X509_CERT_AUX structure and X509_AUX
6524 functions. An X509_AUX function such as PEM_read_X509_AUX()
6525 can still read in a certificate file in the usual way but it
6526 will also read in any additional "auxiliary information". By
6527 doing things this way a fair degree of compatibility can be
6528 retained: existing certificates can have this information added
6529 using the new 'x509' options.
6531 Current auxiliary information includes an "alias" and some trust
6532 settings. The trust settings will ultimately be used in enhanced
6533 certificate chain verification routines: currently a certificate
6534 can only be trusted if it is self signed and then it is trusted
6538 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
6539 The problem was that one of the replacement routines had not been working
6540 since SSLeay releases. For now the offending routine has been replaced
6541 with non-optimised assembler. Even so, this now gives around 95%
6542 performance improvement for 1024 bit RSA signs.
6545 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
6546 handling. Most clients have the effective key size in bits equal to
6547 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
6548 A few however don't do this and instead use the size of the decrypted key
6549 to determine the RC2 key length and the AlgorithmIdentifier to determine
6550 the effective key length. In this case the effective key length can still
6551 be 40 bits but the key length can be 168 bits for example. This is fixed
6552 by manually forcing an RC2 key into the EVP_PKEY structure because the
6553 EVP code can't currently handle unusual RC2 key sizes: it always assumes
6554 the key length and effective key length are equal.
6557 *) Add a bunch of functions that should simplify the creation of
6558 X509_NAME structures. Now you should be able to do:
6559 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
6560 and have it automatically work out the correct field type and fill in
6561 the structures. The more adventurous can try:
6562 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
6563 and it will (hopefully) work out the correct multibyte encoding.
6566 *) Change the 'req' utility to use the new field handling and multibyte
6567 copy routines. Before the DN field creation was handled in an ad hoc
6568 way in req, ca, and x509 which was rather broken and didn't support
6569 BMPStrings or UTF8Strings. Since some software doesn't implement
6570 BMPStrings or UTF8Strings yet, they can be enabled using the config file
6571 using the dirstring_type option. See the new comment in the default
6572 openssl.cnf for more info.
6575 *) Make crypto/rand/md_rand.c more robust:
6576 - Assure unique random numbers after fork().
6577 - Make sure that concurrent threads access the global counter and
6578 md serializably so that we never lose entropy in them
6579 or use exactly the same state in multiple threads.
6580 Access to the large state is not always serializable because
6581 the additional locking could be a performance killer, and
6582 md should be large enough anyway.
6585 *) New file apps/app_rand.c with commonly needed functionality
6586 for handling the random seed file.
6588 Use the random seed file in some applications that previously did not:
6590 dsaparam -genkey (which also ignored its '-rand' option),
6593 x509 (when signing).
6594 Except on systems with /dev/urandom, it is crucial to have a random
6595 seed file at least for key creation, DSA signing, and for DH exchanges;
6596 for RSA signatures we could do without one.
6598 gendh and gendsa (unlike genrsa) used to read only the first byte
6599 of each file listed in the '-rand' option. The function as previously
6600 found in genrsa is now in app_rand.c and is used by all programs
6601 that support '-rand'.
6604 *) In RAND_write_file, use mode 0600 for creating files;
6605 don't just chmod when it may be too late.
6608 *) Report an error from X509_STORE_load_locations
6609 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
6612 *) New function ASN1_mbstring_copy() this copies a string in either
6613 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
6614 into an ASN1_STRING type. A mask of permissible types is passed
6615 and it chooses the "minimal" type to use or an error if not type
6619 *) Add function equivalents to the various macros in asn1.h. The old
6620 macros are retained with an M_ prefix. Code inside the library can
6621 use the M_ macros. External code (including the openssl utility)
6622 should *NOT* in order to be "shared library friendly".
6625 *) Add various functions that can check a certificate's extensions
6626 to see if it usable for various purposes such as SSL client,
6627 server or S/MIME and CAs of these types. This is currently
6628 VERY EXPERIMENTAL but will ultimately be used for certificate chain
6629 verification. Also added a -purpose flag to x509 utility to
6630 print out all the purposes.
6633 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
6637 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
6638 for, obtain and decode and extension and obtain its critical flag.
6639 This allows all the necessary extension code to be handled in a
6640 single function call.
6643 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
6644 platforms. See crypto/rc4/rc4_enc.c for further details.
6647 *) New -noout option to asn1parse. This causes no output to be produced
6648 its main use is when combined with -strparse and -out to extract data
6649 from a file (which may not be in ASN.1 format).
6652 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
6653 when producing the local key id.
6654 [Richard Levitte <levitte@stacken.kth.se>]
6656 *) New option -dhparam in s_server. This allows a DH parameter file to be
6657 stated explicitly. If it is not stated then it tries the first server
6658 certificate file. The previous behaviour hard coded the filename
6662 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
6663 a public key to be input or output. For example:
6664 openssl rsa -in key.pem -pubout -out pubkey.pem
6665 Also added necessary DSA public key functions to handle this.
6668 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
6669 in the message. This was handled by allowing
6670 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
6671 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
6673 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
6674 to the end of the strings whereas this didn't. This would cause problems
6675 if strings read with d2i_ASN1_bytes() were later modified.
6676 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
6678 *) Fix for base64 decode bug. When a base64 bio reads only one line of
6679 data and it contains EOF it will end up returning an error. This is
6680 caused by input 46 bytes long. The cause is due to the way base64
6681 BIOs find the start of base64 encoded data. They do this by trying a
6682 trial decode on each line until they find one that works. When they
6683 do a flag is set and it starts again knowing it can pass all the
6684 data directly through the decoder. Unfortunately it doesn't reset
6685 the context it uses. This means that if EOF is reached an attempt
6686 is made to pass two EOFs through the context and this causes the
6687 resulting error. This can also cause other problems as well. As is
6688 usual with these problems it takes *ages* to find and the fix is
6689 trivial: move one line.
6690 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
6692 *) Ugly workaround to get s_client and s_server working under Windows. The
6693 old code wouldn't work because it needed to select() on sockets and the
6694 tty (for keypresses and to see if data could be written). Win32 only
6695 supports select() on sockets so we select() with a 1s timeout on the
6696 sockets and then see if any characters are waiting to be read, if none
6697 are present then we retry, we also assume we can always write data to
6698 the tty. This isn't nice because the code then blocks until we've
6699 received a complete line of data and it is effectively polling the
6700 keyboard at 1s intervals: however it's quite a bit better than not
6701 working at all :-) A dedicated Windows application might handle this
6702 with an event loop for example.
6705 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
6706 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
6707 will be called when RSA_sign() and RSA_verify() are used. This is useful
6708 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
6709 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
6710 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
6711 This necessitated the support of an extra signature type NID_md5_sha1
6712 for SSL signatures and modifications to the SSL library to use it instead
6713 of calling RSA_public_decrypt() and RSA_private_encrypt().
6716 *) Add new -verify -CAfile and -CApath options to the crl program, these
6717 will lookup a CRL issuers certificate and verify the signature in a
6718 similar way to the verify program. Tidy up the crl program so it
6719 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
6720 less strict. It will now permit CRL extensions even if it is not
6721 a V2 CRL: this will allow it to tolerate some broken CRLs.
6724 *) Initialize all non-automatic variables each time one of the openssl
6725 sub-programs is started (this is necessary as they may be started
6726 multiple times from the "OpenSSL>" prompt).
6727 [Lennart Bang, Bodo Moeller]
6729 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
6730 removing all other RSA functionality (this is what NO_RSA does). This
6731 is so (for example) those in the US can disable those operations covered
6732 by the RSA patent while allowing storage and parsing of RSA keys and RSA
6736 *) Non-copying interface to BIO pairs.
6737 (still largely untested)
6740 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
6741 ASCII string. This was handled independently in various places before.
6744 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
6745 UTF8 strings a character at a time.
6748 *) Use client_version from client hello to select the protocol
6749 (s23_srvr.c) and for RSA client key exchange verification
6750 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
6753 *) Add various utility functions to handle SPKACs, these were previously
6754 handled by poking round in the structure internals. Added new function
6755 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
6756 print, verify and generate SPKACs. Based on an original idea from
6757 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
6760 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
6763 *) Allow the config file extension section to be overwritten on the
6764 command line. Based on an original idea from Massimiliano Pala
6765 <madwolf@comune.modena.it>. The new option is called -extensions
6766 and can be applied to ca, req and x509. Also -reqexts to override
6767 the request extensions in req and -crlexts to override the crl extensions
6771 *) Add new feature to the SPKAC handling in ca. Now you can include
6772 the same field multiple times by preceding it by "XXXX." for example:
6775 this is the same syntax as used in the req config file.
6778 *) Allow certificate extensions to be added to certificate requests. These
6779 are specified in a 'req_extensions' option of the req section of the
6780 config file. They can be printed out with the -text option to req but
6781 are otherwise ignored at present.
6784 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
6785 data read consists of only the final block it would not decrypted because
6786 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
6787 A misplaced 'break' also meant the decrypted final block might not be
6788 copied until the next read.
6791 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
6792 a few extra parameters to the DH structure: these will be useful if
6793 for example we want the value of 'q' or implement X9.42 DH.
6796 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
6797 provides hooks that allow the default DSA functions or functions on a
6798 "per key" basis to be replaced. This allows hardware acceleration and
6799 hardware key storage to be handled without major modification to the
6800 library. Also added low level modexp hooks and CRYPTO_EX structure and
6801 associated functions.
6804 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
6805 as "read only": it can't be written to and the buffer it points to will
6806 not be freed. Reading from a read only BIO is much more efficient than
6807 a normal memory BIO. This was added because there are several times when
6808 an area of memory needs to be read from a BIO. The previous method was
6809 to create a memory BIO and write the data to it, this results in two
6810 copies of the data and an O(n^2) reading algorithm. There is a new
6811 function BIO_new_mem_buf() which creates a read only memory BIO from
6812 an area of memory. Also modified the PKCS#7 routines to use read only
6816 *) Bugfix: ssl23_get_client_hello did not work properly when called in
6817 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
6818 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
6819 but a retry condition occured while trying to read the rest.
6822 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
6823 NID_pkcs7_encrypted by default: this was wrong since this should almost
6824 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
6825 the encrypted data type: this is a more sensible place to put it and it
6826 allows the PKCS#12 code to be tidied up that duplicated this
6830 *) Changed obj_dat.pl script so it takes its input and output files on
6831 the command line. This should avoid shell escape redirection problems
6835 *) Initial support for certificate extension requests, these are included
6836 in things like Xenroll certificate requests. Included functions to allow
6837 extensions to be obtained and added.
6840 *) -crlf option to s_client and s_server for sending newlines as
6841 CRLF (as required by many protocols).
6844 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
6846 *) Install libRSAglue.a when OpenSSL is built with RSAref.
6847 [Ralf S. Engelschall]
6849 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
6850 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
6852 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
6856 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
6857 DH parameters/keys (q is lost during that conversion, but the resulting
6858 DH parameters contain its length).
6860 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
6861 much faster than DH_generate_parameters (which creates parameters
6862 where p = 2*q + 1), and also the smaller q makes DH computations
6863 much more efficient (160-bit exponentiation instead of 1024-bit
6864 exponentiation); so this provides a convenient way to support DHE
6865 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
6866 utter importance to use
6867 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
6869 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
6870 when such DH parameters are used, because otherwise small subgroup
6871 attacks may become possible!
6874 *) Avoid memory leak in i2d_DHparams.
6877 *) Allow the -k option to be used more than once in the enc program:
6878 this allows the same encrypted message to be read by multiple recipients.
6881 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
6882 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
6883 it will always use the numerical form of the OID, even if it has a short
6887 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
6888 method only got called if p,q,dmp1,dmq1,iqmp components were present,
6889 otherwise bn_mod_exp was called. In the case of hardware keys for example
6890 no private key components need be present and it might store extra data
6891 in the RSA structure, which cannot be accessed from bn_mod_exp.
6892 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
6893 private key operations.
6896 *) Added support for SPARC Linux.
6899 *) pem_password_cb function type incompatibly changed from
6900 typedef int pem_password_cb(char *buf, int size, int rwflag);
6902 ....(char *buf, int size, int rwflag, void *userdata);
6903 so that applications can pass data to their callbacks:
6904 The PEM[_ASN1]_{read,write}... functions and macros now take an
6905 additional void * argument, which is just handed through whenever
6906 the password callback is called.
6907 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
6909 New function SSL_CTX_set_default_passwd_cb_userdata.
6911 Compatibility note: As many C implementations push function arguments
6912 onto the stack in reverse order, the new library version is likely to
6913 interoperate with programs that have been compiled with the old
6914 pem_password_cb definition (PEM_whatever takes some data that
6915 happens to be on the stack as its last argument, and the callback
6916 just ignores this garbage); but there is no guarantee whatsoever that
6919 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
6920 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
6921 problems not only on Windows, but also on some Unix platforms.
6922 To avoid problematic command lines, these definitions are now in an
6923 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
6924 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
6927 *) MIPS III/IV assembler module is reimplemented.
6930 *) More DES library cleanups: remove references to srand/rand and
6931 delete an unused file.
6934 *) Add support for the the free Netwide assembler (NASM) under Win32,
6935 since not many people have MASM (ml) and it can be hard to obtain.
6936 This is currently experimental but it seems to work OK and pass all
6937 the tests. Check out INSTALL.W32 for info.
6940 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
6941 without temporary keys kept an extra copy of the server key,
6942 and connections with temporary keys did not free everything in case
6946 *) New function RSA_check_key and new openssl rsa option -check
6947 for verifying the consistency of RSA keys.
6948 [Ulf Moeller, Bodo Moeller]
6950 *) Various changes to make Win32 compile work:
6951 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
6952 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
6953 comparison" warnings.
6954 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
6957 *) Add a debugging option to PKCS#5 v2 key generation function: when
6958 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
6959 derived keys are printed to stderr.
6962 *) Copy the flags in ASN1_STRING_dup().
6963 [Roman E. Pavlov <pre@mo.msk.ru>]
6965 *) The x509 application mishandled signing requests containing DSA
6966 keys when the signing key was also DSA and the parameters didn't match.
6968 It was supposed to omit the parameters when they matched the signing key:
6969 the verifying software was then supposed to automatically use the CA's
6970 parameters if they were absent from the end user certificate.
6972 Omitting parameters is no longer recommended. The test was also
6973 the wrong way round! This was probably due to unusual behaviour in
6974 EVP_cmp_parameters() which returns 1 if the parameters match.
6975 This meant that parameters were omitted when they *didn't* match and
6976 the certificate was useless. Certificates signed with 'ca' didn't have
6978 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
6980 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
6981 The interface is as follows:
6982 Applications can use
6983 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
6984 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
6985 "off" is now the default.
6986 The library internally uses
6987 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
6988 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
6989 to disable memory-checking temporarily.
6991 Some inconsistent states that previously were possible (and were
6992 even the default) are now avoided.
6994 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
6995 with each memory chunk allocated; this is occasionally more helpful
6996 than just having a counter.
6998 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7000 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7004 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7005 which largely parallels "options", but is for changing API behaviour,
7006 whereas "options" are about protocol behaviour.
7007 Initial "mode" flags are:
7009 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7010 a single record has been written.
7011 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7012 retries use the same buffer location.
7013 (But all of the contents must be
7017 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7020 *) Fix problems with no-hmac etc.
7021 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7023 *) New functions RSA_get_default_method(), RSA_set_method() and
7024 RSA_get_method(). These allows replacement of RSA_METHODs without having
7025 to mess around with the internals of an RSA structure.
7028 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7029 Also really enable memory leak checks in openssl.c and in some
7031 [Chad C. Mulligan, Bodo Moeller]
7033 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7034 up the length of negative integers. This has now been simplified to just
7035 store the length when it is first determined and use it later, rather
7036 than trying to keep track of where data is copied and updating it to
7038 [Steve Henson, reported by Brien Wheeler
7039 <bwheeler@authentica-security.com>]
7041 *) Add a new function PKCS7_signatureVerify. This allows the verification
7042 of a PKCS#7 signature but with the signing certificate passed to the
7043 function itself. This contrasts with PKCS7_dataVerify which assumes the
7044 certificate is present in the PKCS#7 structure. This isn't always the
7045 case: certificates can be omitted from a PKCS#7 structure and be
7046 distributed by "out of band" means (such as a certificate database).
7049 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7050 function prototypes in pem.h, also change util/mkdef.pl to add the
7051 necessary function names.
7054 *) mk1mf.pl (used by Windows builds) did not properly read the
7055 options set by Configure in the top level Makefile, and Configure
7056 was not even able to write more than one option correctly.
7057 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7060 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7061 file to be loaded from a BIO or FILE pointer. The BIO version will
7062 for example allow memory BIOs to contain config info.
7065 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7066 Whoever hopes to achieve shared-library compatibility across versions
7067 must use this, not the compile-time macro.
7068 (Exercise 0.9.4: Which is the minimum library version required by
7070 Note: All this applies only to multi-threaded programs, others don't
7074 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7075 through a BIO pair triggered the default case, i.e.
7076 SSLerr(...,SSL_R_UNKNOWN_STATE).
7079 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7080 can use the SSL library even if none of the specific BIOs is
7084 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7085 for the encoded length.
7086 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7088 *) Add initial documentation of the X509V3 functions.
7091 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7092 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7093 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7094 secure PKCS#8 private key format with a high iteration count.
7097 *) Fix determination of Perl interpreter: A perl or perl5
7098 _directory_ in $PATH was also accepted as the interpreter.
7099 [Ralf S. Engelschall]
7101 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7102 wrong with it but it was very old and did things like calling
7103 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7107 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7108 to use the new extension code.
7111 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7112 with macros. This should make it easier to change their form, add extra
7113 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7117 *) Add to configuration table a new entry that can specify an alternative
7118 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7119 according to Mark Crispin <MRC@Panda.COM>.
7123 *) DES CBC did not update the IV. Weird.
7126 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7127 Changing the behaviour of the former might break existing programs --
7128 where IV updating is needed, des_ncbc_encrypt can be used.
7131 *) When bntest is run from "make test" it drives bc to check its
7132 calculations, as well as internally checking them. If an internal check
7133 fails, it needs to cause bc to give a non-zero result or make test carries
7134 on without noticing the failure. Fixed.
7137 *) DES library cleanups.
7140 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7141 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7142 ciphers. NOTE: although the key derivation function has been verified
7143 against some published test vectors it has not been extensively tested
7144 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7148 *) Instead of "mkdir -p", which is not fully portable, use new
7149 Perl script "util/mkdir-p.pl".
7152 *) Rewrite the way password based encryption (PBE) is handled. It used to
7153 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7154 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7155 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7156 the 'parameter' field of the AlgorithmIdentifier is passed to the
7157 underlying key generation function so it must do its own ASN1 parsing.
7158 This has also changed the EVP_PBE_CipherInit() function which now has a
7159 'parameter' argument instead of literal salt and iteration count values
7160 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7163 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7164 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7165 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7166 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7167 value was just used as a "magic string" and not used directly its
7168 value doesn't matter.
7171 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7175 *) "linux-sparc64" configuration (ultrapenguin).
7176 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7177 "linux-sparc" configuration.
7178 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7180 *) config now generates no-xxx options for missing ciphers.
7183 *) Support the EBCDIC character set (work in progress).
7184 File ebcdic.c not yet included because it has a different license.
7185 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7187 *) Support BS2000/OSD-POSIX.
7188 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7190 *) Make callbacks for key generation use void * instead of char *.
7193 *) Make S/MIME samples compile (not yet tested).
7196 *) Additional typesafe stacks.
7199 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7203 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7205 *) New configuration variant "sco5-gcc".
7207 *) Updated some demos.
7208 [Sean O Riordain, Wade Scholine]
7210 *) Add missing BIO_free at exit of pkcs12 application.
7213 *) Fix memory leak in conf.c.
7216 *) Updates for Win32 to assembler version of MD5.
7219 *) Set #! path to perl in apps/der_chop to where we found it
7220 instead of using a fixed path.
7223 *) SHA library changes for irix64-mips4-cc.
7226 *) Improvements for VMS support.
7230 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7232 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7233 This also avoids the problems with SC4.2 and unpatched SC5.
7234 [Andy Polyakov <appro@fy.chalmers.se>]
7236 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7237 These are required because of the typesafe stack would otherwise break
7238 existing code. If old code used a structure member which used to be STACK
7239 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7240 sk_num or sk_value it would produce an error because the num, data members
7241 are not present in STACK_OF. Now it just produces a warning. sk_set
7242 replaces the old method of assigning a value to sk_value
7243 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7244 that does this will no longer work (and should use sk_set instead) but
7245 this could be regarded as a "questionable" behaviour anyway.
7248 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7249 correctly handle encrypted S/MIME data.
7252 *) Change type of various DES function arguments from des_cblock
7253 (which means, in function argument declarations, pointer to char)
7254 to des_cblock * (meaning pointer to array with 8 char elements),
7255 which allows the compiler to do more typechecking; it was like
7256 that back in SSLeay, but with lots of ugly casts.
7258 Introduce new type const_des_cblock.
7261 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7262 problems: find RecipientInfo structure that matches recipient certificate
7263 and initialise the ASN1 structures properly based on passed cipher.
7266 *) Belatedly make the BN tests actually check the results.
7269 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7270 to and from BNs: it was completely broken. New compilation option
7271 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7272 key elements as negative integers.
7275 *) Reorganize and speed up MD5.
7276 [Andy Polyakov <appro@fy.chalmers.se>]
7279 [Richard Levitte <richard@levitte.org>]
7281 *) New option -out to asn1parse to allow the parsed structure to be
7282 output to a file. This is most useful when combined with the -strparse
7283 option to examine the output of things like OCTET STRINGS.
7286 *) Make SSL library a little more fool-proof by not requiring any longer
7287 that SSL_set_{accept,connect}_state be called before
7288 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7289 in many applications because usually everything *appeared* to work as
7290 intended anyway -- now it really works as intended).
7293 *) Move openssl.cnf out of lib/.
7296 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7297 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7298 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7299 [Ralf S. Engelschall]
7301 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7302 handle PKCS#7 enveloped data properly.
7303 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7305 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7306 copying pointers. The cert_st handling is changed by this in
7307 various ways (and thus what used to be known as ctx->default_cert
7308 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7309 any longer when s->cert does not give us what we need).
7310 ssl_cert_instantiate becomes obsolete by this change.
7311 As soon as we've got the new code right (possibly it already is?),
7312 we have solved a couple of bugs of the earlier code where s->cert
7313 was used as if it could not have been shared with other SSL structures.
7315 Note that using the SSL API in certain dirty ways now will result
7316 in different behaviour than observed with earlier library versions:
7317 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7318 does not influence s as it used to.
7320 In order to clean up things more thoroughly, inside SSL_SESSION
7321 we don't use CERT any longer, but a new structure SESS_CERT
7322 that holds per-session data (if available); currently, this is
7323 the peer's certificate chain and, for clients, the server's certificate
7324 and temporary key. CERT holds only those values that can have
7325 meaningful defaults in an SSL_CTX.
7328 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7329 from the internal representation. Various PKCS#7 fixes: remove some
7330 evil casts and set the enc_dig_alg field properly based on the signing
7334 *) Allow PKCS#12 password to be set from the command line or the
7335 environment. Let 'ca' get its config file name from the environment
7336 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7340 *) Allow certificate policies extension to use an IA5STRING for the
7341 organization field. This is contrary to the PKIX definition but
7342 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7346 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7347 without disallowing inline assembler and the like for non-pedantic builds.
7350 *) Support Borland C++ builder.
7351 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7356 *) SHA-1 cleanups and performance enhancements.
7357 [Andy Polyakov <appro@fy.chalmers.se>]
7359 *) Sparc v8plus assembler for the bignum library.
7360 [Andy Polyakov <appro@fy.chalmers.se>]
7362 *) Accept any -xxx and +xxx compiler options in Configure.
7365 *) Update HPUX configuration.
7368 *) Add missing sk_<type>_unshift() function to safestack.h
7369 [Ralf S. Engelschall]
7371 *) New function SSL_CTX_use_certificate_chain_file that sets the
7372 "extra_cert"s in addition to the certificate. (This makes sense
7373 only for "PEM" format files, as chains as a whole are not
7377 *) Support verify_depth from the SSL API.
7378 x509_vfy.c had what can be considered an off-by-one-error:
7379 Its depth (which was not part of the external interface)
7380 was actually counting the number of certificates in a chain;
7381 now it really counts the depth.
7384 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7385 instead of X509err, which often resulted in confusing error
7386 messages since the error codes are not globally unique
7387 (e.g. an alleged error in ssl3_accept when a certificate
7388 didn't match the private key).
7390 *) New function SSL_CTX_set_session_id_context that allows to set a default
7391 value (so that you don't need SSL_set_session_id_context for each
7392 connection using the SSL_CTX).
7395 *) OAEP decoding bug fix.
7398 *) Support INSTALL_PREFIX for package builders, as proposed by
7402 *) New Configure options "threads" and "no-threads". For systems
7403 where the proper compiler options are known (currently Solaris
7404 and Linux), "threads" is the default.
7407 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7410 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7411 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7412 such as /usr/local/bin.
7415 *) "make linux-shared" to build shared libraries.
7416 [Niels Poppe <niels@netbox.org>]
7418 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7421 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7422 extension adding in x509 utility.
7425 *) Remove NOPROTO sections and error code comments.
7428 *) Partial rewrite of the DEF file generator to now parse the ANSI
7432 *) New Configure options --prefix=DIR and --openssldir=DIR.
7435 *) Complete rewrite of the error code script(s). It is all now handled
7436 by one script at the top level which handles error code gathering,
7437 header rewriting and C source file generation. It should be much better
7438 than the old method: it now uses a modified version of Ulf's parser to
7439 read the ANSI prototypes in all header files (thus the old K&R definitions
7440 aren't needed for error creation any more) and do a better job of
7441 translating function codes into names. The old 'ASN1 error code imbedded
7442 in a comment' is no longer necessary and it doesn't use .err files which
7443 have now been deleted. Also the error code call doesn't have to appear all
7444 on one line (which resulted in some large lines...).
7447 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7450 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7451 0 (which usually indicates a closed connection), but continue reading.
7454 *) Fix some race conditions.
7457 *) Add support for CRL distribution points extension. Add Certificate
7458 Policies and CRL distribution points documentation.
7461 *) Move the autogenerated header file parts to crypto/opensslconf.h.
7464 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
7465 8 of keying material. Merlin has also confirmed interop with this fix
7466 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
7467 [Merlin Hughes <merlin@baltimore.ie>]
7469 *) Fix lots of warnings.
7470 [Richard Levitte <levitte@stacken.kth.se>]
7472 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
7473 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
7474 [Richard Levitte <levitte@stacken.kth.se>]
7476 *) Fix problems with sizeof(long) == 8.
7477 [Andy Polyakov <appro@fy.chalmers.se>]
7479 *) Change functions to ANSI C.
7482 *) Fix typos in error codes.
7483 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
7485 *) Remove defunct assembler files from Configure.
7488 *) SPARC v8 assembler BIGNUM implementation.
7489 [Andy Polyakov <appro@fy.chalmers.se>]
7491 *) Support for Certificate Policies extension: both print and set.
7492 Various additions to support the r2i method this uses.
7495 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
7496 return a const string when you are expecting an allocated buffer.
7499 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
7500 types DirectoryString and DisplayText.
7503 *) Add code to allow r2i extensions to access the configuration database,
7504 add an LHASH database driver and add several ctx helper functions.
7507 *) Fix an evil bug in bn_expand2() which caused various BN functions to
7508 fail when they extended the size of a BIGNUM.
7511 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
7512 support typesafe stack.
7515 *) Fix typo in SSL_[gs]et_options().
7516 [Nils Frostberg <nils@medcom.se>]
7518 *) Delete various functions and files that belonged to the (now obsolete)
7519 old X509V3 handling code.
7522 *) New Configure option "rsaref".
7525 *) Don't auto-generate pem.h.
7528 *) Introduce type-safe ASN.1 SETs.
7531 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
7532 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
7534 *) Introduce type-safe STACKs. This will almost certainly break lots of code
7535 that links with OpenSSL (well at least cause lots of warnings), but fear
7536 not: the conversion is trivial, and it eliminates loads of evil casts. A
7537 few STACKed things have been converted already. Feel free to convert more.
7538 In the fullness of time, I'll do away with the STACK type altogether.
7541 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
7542 specified in <certfile> by updating the entry in the index.txt file.
7543 This way one no longer has to edit the index.txt file manually for
7544 revoking a certificate. The -revoke option does the gory details now.
7545 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
7547 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
7548 `-text' option at all and this way the `-noout -text' combination was
7549 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
7550 [Ralf S. Engelschall]
7552 *) Make sure a corresponding plain text error message exists for the
7553 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
7554 verify callback function determined that a certificate was revoked.
7555 [Ralf S. Engelschall]
7557 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
7558 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
7559 all available cipers including rc5, which was forgotten until now.
7560 In order to let the testing shell script know which algorithms
7561 are available, a new (up to now undocumented) command
7562 "openssl list-cipher-commands" is used.
7565 *) Bugfix: s_client occasionally would sleep in select() when
7566 it should have checked SSL_pending() first.
7569 *) New functions DSA_do_sign and DSA_do_verify to provide access to
7570 the raw DSA values prior to ASN.1 encoding.
7573 *) Tweaks to Configure
7574 [Niels Poppe <niels@netbox.org>]
7576 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
7580 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
7583 *) New config option to avoid instructions that are illegal on the 80386.
7584 The default code is faster, but requires at least a 486.
7587 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
7588 SSL2_SERVER_VERSION (not used at all) macros, which are now the
7589 same as SSL2_VERSION anyway.
7592 *) New "-showcerts" option for s_client.
7595 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
7596 application. Various cleanups and fixes.
7599 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
7600 modify error routines to work internally. Add error codes and PBE init
7601 to library startup routines.
7604 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
7605 packing functions to asn1 and evp. Changed function names and error
7606 codes along the way.
7609 *) PKCS12 integration: and so it begins... First of several patches to
7610 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
7611 objects to objects.h
7614 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
7615 and display support for Thawte strong extranet extension.
7618 *) Add LinuxPPC support.
7619 [Jeff Dubrule <igor@pobox.org>]
7621 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
7622 bn_div_words in alpha.s.
7623 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
7625 *) Make sure the RSA OAEP test is skipped under -DRSAref because
7626 OAEP isn't supported when OpenSSL is built with RSAref.
7627 [Ulf Moeller <ulf@fitug.de>]
7629 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
7630 so they no longer are missing under -DNOPROTO.
7631 [Soren S. Jorvang <soren@t.dk>]
7634 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
7636 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
7637 doesn't work when the session is reused. Coming soon!
7640 *) Fix a security hole, that allows sessions to be reused in the wrong
7641 context thus bypassing client cert protection! All software that uses
7642 client certs and session caches in multiple contexts NEEDS PATCHING to
7643 allow session reuse! A fuller solution is in the works.
7644 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
7646 *) Some more source tree cleanups (removed obsolete files
7647 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
7648 permission on "config" script to be executable) and a fix for the INSTALL
7650 [Ulf Moeller <ulf@fitug.de>]
7652 *) Remove some legacy and erroneous uses of malloc, free instead of
7654 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
7656 *) Make rsa_oaep_test return non-zero on error.
7657 [Ulf Moeller <ulf@fitug.de>]
7659 *) Add support for native Solaris shared libraries. Configure
7660 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
7661 if someone would make that last step automatic.
7662 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
7664 *) ctx_size was not built with the right compiler during "make links". Fixed.
7667 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
7668 except NULL ciphers". This means the default cipher list will no longer
7669 enable NULL ciphers. They need to be specifically enabled e.g. with
7670 the string "DEFAULT:eNULL".
7673 *) Fix to RSA private encryption routines: if p < q then it would
7674 occasionally produce an invalid result. This will only happen with
7675 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
7678 *) Be less restrictive and allow also `perl util/perlpath.pl
7679 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
7680 because this way one can also use an interpreter named `perl5' (which is
7681 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
7682 installed as `perl').
7683 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
7685 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
7686 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
7688 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
7689 advapi32.lib to Win32 build and change the pem test comparision
7690 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
7691 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
7692 and crypto/des/ede_cbcm_enc.c.
7695 *) DES quad checksum was broken on big-endian architectures. Fixed.
7698 *) Comment out two functions in bio.h that aren't implemented. Fix up the
7699 Win32 test batch file so it (might) work again. The Win32 test batch file
7700 is horrible: I feel ill....
7703 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
7704 in e_os.h. Audit of header files to check ANSI and non ANSI
7705 sections: 10 functions were absent from non ANSI section and not exported
7706 from Windows DLLs. Fixed up libeay.num for new functions.
7709 *) Make `openssl version' output lines consistent.
7710 [Ralf S. Engelschall]
7712 *) Fix Win32 symbol export lists for BIO functions: Added
7713 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
7714 to ms/libeay{16,32}.def.
7715 [Ralf S. Engelschall]
7717 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
7718 fine under Unix and passes some trivial tests I've now added. But the
7719 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
7720 added to make sure no one expects that this stuff really works in the
7721 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
7722 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
7724 [Ralf S. Engelschall]
7726 *) Fix the generation of two part addresses in perl.
7727 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
7729 *) Add config entry for Linux on MIPS.
7730 [John Tobey <jtobey@channel1.com>]
7732 *) Make links whenever Configure is run, unless we are on Windoze.
7735 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
7736 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
7740 *) Add a useful kludge to allow package maintainers to specify compiler and
7741 other platforms details on the command line without having to patch the
7742 Configure script everytime: One now can use ``perl Configure
7743 <id>:<details>'', i.e. platform ids are allowed to have details appended
7744 to them (seperated by colons). This is treated as there would be a static
7745 pre-configured entry in Configure's %table under key <id> with value
7746 <details> and ``perl Configure <id>'' is called. So, when you want to
7747 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
7748 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
7749 now, which overrides the FreeBSD-elf entry on-the-fly.
7750 [Ralf S. Engelschall]
7752 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
7755 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
7756 on the `perl Configure ...' command line. This way one can compile
7757 OpenSSL libraries with Position Independent Code (PIC) which is needed
7758 for linking it into DSOs.
7759 [Ralf S. Engelschall]
7761 *) Remarkably, export ciphers were totally broken and no-one had noticed!
7765 *) Cleaned up the LICENSE document: The official contact for any license
7766 questions now is the OpenSSL core team under openssl-core@openssl.org.
7767 And add a paragraph about the dual-license situation to make sure people
7768 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
7769 to the OpenSSL toolkit.
7770 [Ralf S. Engelschall]
7772 *) General source tree makefile cleanups: Made `making xxx in yyy...'
7773 display consistent in the source tree and replaced `/bin/rm' by `rm'.
7774 Additonally cleaned up the `make links' target: Remove unnecessary
7775 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
7776 to speed processing and no longer clutter the display with confusing
7777 stuff. Instead only the actually done links are displayed.
7778 [Ralf S. Engelschall]
7780 *) Permit null encryption ciphersuites, used for authentication only. It used
7781 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
7782 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
7786 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
7787 signed attributes when verifying signatures (this would break them),
7788 the detached data encoding was wrong and public keys obtained using
7789 X509_get_pubkey() weren't freed.
7792 *) Add text documentation for the BUFFER functions. Also added a work around
7793 to a Win95 console bug. This was triggered by the password read stuff: the
7794 last character typed gets carried over to the next fread(). If you were
7795 generating a new cert request using 'req' for example then the last
7796 character of the passphrase would be CR which would then enter the first
7800 *) Added the new `Includes OpenSSL Cryptography Software' button as
7801 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
7802 button and can be used by applications based on OpenSSL to show the
7803 relationship to the OpenSSL project.
7804 [Ralf S. Engelschall]
7806 *) Remove confusing variables in function signatures in files
7807 ssl/ssl_lib.c and ssl/ssl.h.
7808 [Lennart Bong <lob@kulthea.stacken.kth.se>]
7810 *) Don't install bss_file.c under PREFIX/include/
7811 [Lennart Bong <lob@kulthea.stacken.kth.se>]
7813 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
7814 functions that return function pointers and has support for NT specific
7815 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
7816 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
7817 unsigned to signed types: this was killing the Win32 compile.
7820 *) Add new certificate file to stack functions,
7821 SSL_add_dir_cert_subjects_to_stack() and
7822 SSL_add_file_cert_subjects_to_stack(). These largely supplant
7823 SSL_load_client_CA_file(), and can be used to add multiple certs easily
7824 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
7825 This means that Apache-SSL and similar packages don't have to mess around
7826 to add as many CAs as they want to the preferred list.
7829 *) Experiment with doxygen documentation. Currently only partially applied to
7831 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
7832 openssl.doxy as the configuration file.
7835 *) Get rid of remaining C++-style comments which strict C compilers hate.
7836 [Ralf S. Engelschall, pointed out by Carlos Amengual]
7838 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
7839 compiled in by default: it has problems with large keys.
7842 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
7843 DH private keys and/or callback functions which directly correspond to
7844 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
7845 is needed for applications which have to configure certificates on a
7846 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
7848 For the RSA certificate situation is makes no difference, but
7849 for the DSA certificate situation this fixes the "no shared cipher"
7850 problem where the OpenSSL cipher selection procedure failed because the
7851 temporary keys were not overtaken from the context and the API provided
7852 no way to reconfigure them.
7853 The new functions now let applications reconfigure the stuff and they
7854 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
7855 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
7856 non-public-API function ssl_cert_instantiate() is used as a helper
7857 function and also to reduce code redundancy inside ssl_rsa.c.
7858 [Ralf S. Engelschall]
7860 *) Move s_server -dcert and -dkey options out of the undocumented feature
7861 area because they are useful for the DSA situation and should be
7862 recognized by the users.
7863 [Ralf S. Engelschall]
7865 *) Fix the cipher decision scheme for export ciphers: the export bits are
7866 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
7867 SSL_EXP_MASK. So, the original variable has to be used instead of the
7868 already masked variable.
7869 [Richard Levitte <levitte@stacken.kth.se>]
7871 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
7872 [Richard Levitte <levitte@stacken.kth.se>]
7874 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
7875 from `int' to `unsigned int' because it's a length and initialized by
7876 EVP_DigestFinal() which expects an `unsigned int *'.
7877 [Richard Levitte <levitte@stacken.kth.se>]
7879 *) Don't hard-code path to Perl interpreter on shebang line of Configure
7880 script. Instead use the usual Shell->Perl transition trick.
7881 [Ralf S. Engelschall]
7883 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
7884 (in addition to RSA certificates) to match the behaviour of `openssl dsa
7885 -noout -modulus' as it's already the case for `openssl rsa -noout
7886 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
7887 currently the public key is printed (a decision which was already done by
7888 `openssl dsa -modulus' in the past) which serves a similar purpose.
7889 Additionally the NO_RSA no longer completely removes the whole -modulus
7890 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
7892 [Ralf S. Engelschall]
7894 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
7895 BIO. See the source (crypto/evp/bio_ok.c) for more info.
7896 [Arne Ansper <arne@ats.cyber.ee>]
7898 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
7899 to be added. Now both 'req' and 'ca' can use new objects defined in the
7903 *) Add cool BIO that does syslog (or event log on NT).
7904 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
7906 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
7907 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
7908 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
7909 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
7912 *) Add preliminary config info for new extension code.
7915 *) Make RSA_NO_PADDING really use no padding.
7916 [Ulf Moeller <ulf@fitug.de>]
7918 *) Generate errors when private/public key check is done.
7921 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
7922 for some CRL extensions and new objects added.
7925 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
7926 key usage extension and fuller support for authority key id.
7929 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
7930 padding method for RSA, which is recommended for new applications in PKCS
7931 #1 v2.0 (RFC 2437, October 1998).
7932 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
7933 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
7934 against Bleichbacher's attack on RSA.
7935 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
7938 *) Updates to the new SSL compression code
7939 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
7941 *) Fix so that the version number in the master secret, when passed
7942 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
7943 (because the server will not accept higher), that the version number
7944 is 0x03,0x01, not 0x03,0x00
7945 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
7947 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
7948 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
7949 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
7952 *) Support for RAW extensions where an arbitrary extension can be
7953 created by including its DER encoding. See apps/openssl.cnf for
7957 *) Make sure latest Perl versions don't interpret some generated C array
7958 code as Perl array code in the crypto/err/err_genc.pl script.
7959 [Lars Weber <3weber@informatik.uni-hamburg.de>]
7961 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
7962 not many people have the assembler. Various Win32 compilation fixes and
7963 update to the INSTALL.W32 file with (hopefully) more accurate Win32
7967 *) Modify configure script 'Configure' to automatically create crypto/date.h
7968 file under Win32 and also build pem.h from pem.org. New script
7969 util/mkfiles.pl to create the MINFO file on environments that can't do a
7970 'make files': perl util/mkfiles.pl >MINFO should work.
7973 *) Major rework of DES function declarations, in the pursuit of correctness
7974 and purity. As a result, many evil casts evaporated, and some weirdness,
7975 too. You may find this causes warnings in your code. Zapping your evil
7976 casts will probably fix them. Mostly.
7979 *) Fix for a typo in asn1.h. Bug fix to object creation script
7980 obj_dat.pl. It considered a zero in an object definition to mean
7981 "end of object": none of the objects in objects.h have any zeros
7982 so it wasn't spotted.
7983 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
7985 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
7986 Masking (CBCM). In the absence of test vectors, the best I have been able
7987 to do is check that the decrypt undoes the encrypt, so far. Send me test
7988 vectors if you have them.
7991 *) Correct calculation of key length for export ciphers (too much space was
7992 allocated for null ciphers). This has not been tested!
7995 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
7996 message is now correct (it understands "crypto" and "ssl" on its
7997 command line). There is also now an "update" option. This will update
7998 the util/ssleay.num and util/libeay.num files with any new functions.
8000 perl util/mkdef.pl crypto ssl update
8001 it will update them.
8004 *) Overhauled the Perl interface (perl/*):
8005 - ported BN stuff to OpenSSL's different BN library
8006 - made the perl/ source tree CVS-aware
8007 - renamed the package from SSLeay to OpenSSL (the files still contain
8008 their history because I've copied them in the repository)
8009 - removed obsolete files (the test scripts will be replaced
8010 by better Test::Harness variants in the future)
8011 [Ralf S. Engelschall]
8013 *) First cut for a very conservative source tree cleanup:
8014 1. merge various obsolete readme texts into doc/ssleay.txt
8015 where we collect the old documents and readme texts.
8016 2. remove the first part of files where I'm already sure that we no
8017 longer need them because of three reasons: either they are just temporary
8018 files which were left by Eric or they are preserved original files where
8019 I've verified that the diff is also available in the CVS via "cvs diff
8020 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8021 the crypto/md/ stuff).
8022 [Ralf S. Engelschall]
8024 *) More extension code. Incomplete support for subject and issuer alt
8025 name, issuer and authority key id. Change the i2v function parameters
8026 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8027 what that's for :-) Fix to ASN1 macro which messed up
8028 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8031 *) Preliminary support for ENUMERATED type. This is largely copied from the
8035 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8036 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8038 *) Make sure `make rehash' target really finds the `openssl' program.
8039 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8041 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8042 like to hear about it if this slows down other processors.
8045 *) Add CygWin32 platform information to Configure script.
8046 [Alan Batie <batie@aahz.jf.intel.com>]
8048 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8049 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8051 *) New program nseq to manipulate netscape certificate sequences
8054 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8058 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8059 but the BN code had some problems that would cause failures when
8060 doing certificate verification and some other functions.
8061 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8063 *) Add ASN1 and PEM code to support netscape certificate sequences.
8066 *) Add ASN1 and PEM code to support netscape certificate sequences.
8069 *) Add several PKIX and private extended key usage OIDs.
8072 *) Modify the 'ca' program to handle the new extension code. Modify
8073 openssl.cnf for new extension format, add comments.
8076 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8077 and add a sample to openssl.cnf so req -x509 now adds appropriate
8081 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8082 error code, add initial support to X509_print() and x509 application.
8085 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8086 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8087 stuff is currently isolated and isn't even compiled yet.
8090 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8091 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8092 Removed the versions check from X509 routines when loading extensions:
8093 this allows certain broken certificates that don't set the version
8094 properly to be processed.
8097 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8098 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8099 can still be regenerated with "make depend".
8102 *) Spelling mistake in C version of CAST-128.
8103 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8105 *) Changes to the error generation code. The perl script err-code.pl
8106 now reads in the old error codes and retains the old numbers, only
8107 adding new ones if necessary. It also only changes the .err files if new
8108 codes are added. The makefiles have been modified to only insert errors
8109 when needed (to avoid needlessly modifying header files). This is done
8110 by only inserting errors if the .err file is newer than the auto generated
8111 C file. To rebuild all the error codes from scratch (the old behaviour)
8112 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8113 or delete all the .err files.
8116 *) CAST-128 was incorrectly implemented for short keys. The C version has
8117 been fixed, but is untested. The assembler versions are also fixed, but
8118 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8119 to regenerate it if needed.
8120 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8121 Hagino <itojun@kame.net>]
8123 *) File was opened incorrectly in randfile.c.
8124 [Ulf Möller <ulf@fitug.de>]
8126 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8127 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8128 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8129 al: it's just almost always a UTCTime. Note this patch adds new error
8130 codes so do a "make errors" if there are problems.
8133 *) Correct Linux 1 recognition in config.
8134 [Ulf Möller <ulf@fitug.de>]
8136 *) Remove pointless MD5 hash when using DSA keys in ca.
8137 [Anonymous <nobody@replay.com>]
8139 *) Generate an error if given an empty string as a cert directory. Also
8140 generate an error if handed NULL (previously returned 0 to indicate an
8141 error, but didn't set one).
8142 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8144 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8147 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8148 parameters. This was causing a warning which killed off the Win32 compile.
8151 *) Remove C++ style comments from crypto/bn/bn_local.h.
8152 [Neil Costigan <neil.costigan@celocom.com>]
8154 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8155 based on a text string, looking up short and long names and finally
8156 "dot" format. The "dot" format stuff didn't work. Added new function
8157 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8158 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8159 OID is not part of the table.
8162 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8163 X509_LOOKUP_by_alias().
8166 *) Sort openssl functions by name.
8169 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8170 encryption from sample DSA keys (in case anyone is interested the password
8174 *) Make _all_ *_free functions accept a NULL pointer.
8175 [Frans Heymans <fheymans@isaserver.be>]
8177 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8179 [Anonymous <nobody@replay.com>]
8181 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8182 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8184 *) Don't blow it for numeric -newkey arguments to apps/req.
8185 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8187 *) Temp key "for export" tests were wrong in s3_srvr.c.
8188 [Anonymous <nobody@replay.com>]
8190 *) Add prototype for temp key callback functions
8191 SSL_CTX_set_tmp_{rsa,dh}_callback().
8194 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8195 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8198 *) X509_name_add_entry() freed the wrong thing after an error.
8199 [Arne Ansper <arne@ats.cyber.ee>]
8201 *) rsa_eay.c would attempt to free a NULL context.
8202 [Arne Ansper <arne@ats.cyber.ee>]
8204 *) BIO_s_socket() had a broken should_retry() on Windoze.
8205 [Arne Ansper <arne@ats.cyber.ee>]
8207 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8208 [Arne Ansper <arne@ats.cyber.ee>]
8210 *) Make sure the already existing X509_STORE->depth variable is initialized
8211 in X509_STORE_new(), but document the fact that this variable is still
8212 unused in the certificate verification process.
8213 [Ralf S. Engelschall]
8215 *) Fix the various library and apps files to free up pkeys obtained from
8216 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8219 *) Fix reference counting in X509_PUBKEY_get(). This makes
8220 demos/maurice/example2.c work, amongst others, probably.
8221 [Steve Henson and Ben Laurie]
8223 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8224 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8225 are no longer created. This way we have a single and consistent command
8226 line interface `openssl <command>', similar to `cvs <command>'.
8227 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8229 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8230 BIT STRING wrapper always have zero unused bits.
8233 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8236 *) Make the top-level INSTALL documentation easier to understand.
8239 *) Makefiles updated to exit if an error occurs in a sub-directory
8240 make (including if user presses ^C) [Paul Sutton]
8242 *) Make Montgomery context stuff explicit in RSA data structure.
8245 *) Fix build order of pem and err to allow for generated pem.h.
8248 *) Fix renumbering bug in X509_NAME_delete_entry().
8251 *) Enhanced the err-ins.pl script so it makes the error library number
8252 global and can add a library name. This is needed for external ASN1 and
8253 other error libraries.
8256 *) Fixed sk_insert which never worked properly.
8259 *) Fix ASN1 macros so they can handle indefinite length construted
8260 EXPLICIT tags. Some non standard certificates use these: they can now
8264 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8265 into a single doc/ssleay.txt bundle. This way the information is still
8266 preserved but no longer messes up this directory. Now it's new room for
8267 the new set of documenation files.
8268 [Ralf S. Engelschall]
8270 *) SETs were incorrectly DER encoded. This was a major pain, because they
8271 shared code with SEQUENCEs, which aren't coded the same. This means that
8272 almost everything to do with SETs or SEQUENCEs has either changed name or
8273 number of arguments.
8274 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8276 *) Fix test data to work with the above.
8279 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8280 was already fixed by Eric for 0.9.1 it seems.
8281 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8283 *) Autodetect FreeBSD3.
8286 *) Fix various bugs in Configure. This affects the following platforms:
8290 unixware-2.0-pentium
8294 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8295 before they are needed.
8298 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8302 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8304 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8305 changed SSLeay to OpenSSL in version strings.
8306 [Ralf S. Engelschall]
8308 *) Some fixups to the top-level documents.
8311 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8312 because the symlink to include/ was missing.
8313 [Ralf S. Engelschall]
8315 *) Incorporated the popular no-RSA/DSA-only patches
8316 which allow to compile a RSA-free SSLeay.
8317 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8319 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8320 when "ssleay" is still not found.
8321 [Ralf S. Engelschall]
8323 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8324 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8326 *) Updated the README file.
8327 [Ralf S. Engelschall]
8329 *) Added various .cvsignore files in the CVS repository subdirs
8330 to make a "cvs update" really silent.
8331 [Ralf S. Engelschall]
8333 *) Recompiled the error-definition header files and added
8334 missing symbols to the Win32 linker tables.
8335 [Ralf S. Engelschall]
8337 *) Cleaned up the top-level documents;
8338 o new files: CHANGES and LICENSE
8339 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8340 o merged COPYRIGHT into LICENSE
8341 o removed obsolete TODO file
8342 o renamed MICROSOFT to INSTALL.W32
8343 [Ralf S. Engelschall]
8345 *) Removed dummy files from the 0.9.1b source tree:
8346 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8347 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8348 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8349 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8350 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8351 [Ralf S. Engelschall]
8353 *) Added various platform portability fixes.
8356 *) The Genesis of the OpenSSL rpject:
8357 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8358 Young and Tim J. Hudson created while they were working for C2Net until
8360 [The OpenSSL Project]
8363 Changes between 0.9.0b and 0.9.1b [not released]
8365 *) Updated a few CA certificates under certs/
8368 *) Changed some BIGNUM api stuff.
8371 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8372 DGUX x86, Linux Alpha, etc.
8375 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8376 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8380 *) Add -strparse option to asn1pars program which parses nested
8382 [Dr Stephen Henson <shenson@bigfoot.com>]
8384 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8387 *) DSA fix for "ca" program.
8390 *) Added "-genkey" option to "dsaparam" program.
8393 *) Added RIPE MD160 (rmd160) message digest.
8396 *) Added -a (all) option to "ssleay version" command.
8399 *) Added PLATFORM define which is the id given to Configure.
8402 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8405 *) Extended the ASN.1 parser routines.
8408 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8411 *) Added a BN_CTX to the BN library.
8414 *) Fixed the weak key values in DES library
8417 *) Changed API in EVP library for cipher aliases.
8420 *) Added support for RC2/64bit cipher.
8423 *) Converted the lhash library to the crypto/mem.c functions.
8426 *) Added more recognized ASN.1 object ids.
8429 *) Added more RSA padding checks for SSL/TLS.
8432 *) Added BIO proxy/filter functionality.
8435 *) Added extra_certs to SSL_CTX which can be used
8436 send extra CA certificates to the client in the CA cert chain sending
8437 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8440 *) Now Fortezza is denied in the authentication phase because
8441 this is key exchange mechanism is not supported by SSLeay at all.
8444 *) Additional PKCS1 checks.
8447 *) Support the string "TLSv1" for all TLS v1 ciphers.
8450 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8451 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8454 *) Fixed a few memory leaks.
8457 *) Fixed various code and comment typos.
8460 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
8461 bytes sent in the client random.
8462 [Edward Bishop <ebishop@spyglass.com>]