5 Changes between 0.9.8f and 0.9.9 [xx XXX xxxx]
7 *) Add RFC4507 support to OpenSSL. This includes the corrections in
8 RFC4507bis. The encrypted ticket format is an encrypted encoded
9 SSL_SESSION structure, that way new session features are automatically
12 If a client application caches session in an SSL_SESSION support it
13 should automatically be supported because an extension includes the
14 ticket in the structure. The SSL_CTX structure automatically generates
15 keys for ticket protection in servers so again support should be possible
16 with no application modification.
18 If a client or server wishes to disable RFC4507 support then the option
19 SSL_OP_NO_TICKET can be set.
21 Add a TLS extension debugging callback to allow the contents of any client
22 or server extensions to be examined.
25 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
26 OpenSSL should now compile cleanly on gcc 4.2
27 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
29 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
30 support including streaming MAC support: this is required for GOST
32 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
34 *) Add option -stream to use PKCS#7 streaming in smime utility. New
35 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
36 to output in BER and PEM format.
39 *) Experimental support for use of HMAC via EVP_PKEY interface. This
40 allows HMAC to be handled via the EVP_DigestSign*() interface. The
41 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
42 ENGINE support for HMAC keys which are unextractable. New -mac and
43 -macopt options to dgst utility.
46 *) New option -sigopt to dgst utility. Update dgst to use
47 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
48 alternative signing paramaters such as X9.31 or PSS in the dgst
52 *) Change ssl_cipher_apply_rule(), the internal function that does
53 the work each time a ciphersuite string requests enabling
54 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
55 removing ("!foo+bar") a class of ciphersuites: Now it maintains
56 the order of disabled ciphersuites such that those ciphersuites
57 that most recently went from enabled to disabled not only stay
58 in order with respect to each other, but also have higher priority
59 than other disabled ciphersuites the next time ciphersuites are
62 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
63 the same ciphersuites as with "HIGH" alone, but in a specific
64 order where the PSK ciphersuites come first (since they are the
65 most recently disabled ciphersuites when "HIGH" is parsed).
67 Also, change ssl_create_cipher_list() (using this new
68 funcionality) such that between otherwise identical
69 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
73 *) Change ssl_create_cipher_list() so that it automatically
74 arranges the ciphersuites in reasonable order before starting
75 to process the rule string. Thus, the definition for "DEFAULT"
76 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
77 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
78 This makes it much easier to arrive at a reasonable default order
79 in applications for which anonymous ciphers are OK (meaning
80 that you can't actually use DEFAULT).
81 [Bodo Moeller; suggested by Victor Duchovni]
83 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
84 processing) into multiple integers instead of setting
85 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
86 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
87 (These masks as well as the individual bit definitions are hidden
88 away into the non-exported interface ssl/ssl_locl.h, so this
89 change to the definition of the SSL_CIPHER structure shouldn't
90 affect applications.) This give us more bits for each of these
91 categories, so there is no longer a need to coagulate AES128 and
92 AES256 into a single algorithm bit, and to coagulate Camellia128
93 and Camellia256 into a single algorithm bit, which has led to all
96 Thus, among other things, the kludge introduced in 0.9.7m and
97 0.9.8e for masking out AES256 independently of AES128 or masking
98 out Camellia256 independently of AES256 is not needed here in 0.9.9.
100 With the change, we also introduce new ciphersuite aliases that
101 so far were missing: "AES128", "AES256", "CAMELLIA128", and
105 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
106 Use the leftmost N bytes of the signature input if the input is
107 larger than the prime q (with N being the size in bytes of q).
110 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
111 it yet and it is largely untested.
114 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
117 *) Initial incomplete changes to avoid need for function casts in OpenSSL
118 some compilers (gcc 4.2 and later) reject their use. Safestack is
119 reimplemented using inline functions: tests show that these calls are
120 typically optimized away by compilers so they have no additional overhead.
121 Update ASN1 to avoid use of legacy functions.
124 *) Win32/64 targets are linked with Winsock2.
127 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
128 to external functions. This can be used to increase CRL handling
129 efficiency especially when CRLs are very large by (for example) storing
130 the CRL revoked certificates in a database.
133 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
134 new CRLs added to a directory can be used. New command line option
135 -verify_return_error to s_client and s_server. This causes real errors
136 to be returned by the verify callback instead of carrying on no matter
137 what. This reflects the way a "real world" verify callback would behave.
140 *) GOST engine, supporting several GOST algorithms and public key formats.
141 Kindly donated by Cryptocom.
144 *) Partial support for Issuing Distribution Point CRL extension. CRLs
145 partitioned by DP are handled but no indirect CRL or reason partitioning
146 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
147 selected via a scoring technique which handles IDP and AKID in CRLs.
150 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
151 will ultimately be used for all verify operations: this will remove the
152 X509_STORE dependency on certificate verification and allow alternative
153 lookup methods. X509_STORE based implementations of these two callbacks.
156 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
157 Modify get_crl() to find a valid (unexpired) CRL if possible.
160 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
161 this would be called X509_CRL_cmp() but that name is already used by
162 a function that just compares CRL issuer names. Cache several CRL
163 extensions in X509_CRL structure and cache CRLDP in X509.
166 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
167 this maps equivalent X509_NAME structures into a consistent structure.
168 Name comparison can then be performed rapidly using memcmp().
171 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
175 *) Allow digests to supply their own micalg string for S/MIME type using
176 the ctrl EVP_MD_CTRL_MICALG.
179 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
180 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
181 ctrl. It can then customise the structure before and/or after signing
185 *) New function OBJ_add_sigid() to allow application defined signature OIDs
186 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
187 to free up any added signature OIDs.
190 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
191 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
192 digest and cipher tables. New options added to openssl utility:
193 list-message-digest-algorithms and list-cipher-algorithms.
196 *) In addition to the numerical (unsigned long) thread ID, provide
197 for a pointer (void *) thread ID. This helps accomodate systems
198 that do not provide an unsigned long thread ID. OpenSSL assumes
199 it is in the same thread iff both the numerical and the pointer
200 thread ID agree; so applications are just required to define one
201 of them appropriately (e.g., by using a pointer to a per-thread
202 memory object malloc()ed by the application for the pointer-type
203 thread ID). Exactly analoguous to the existing functions
205 void CRYPTO_set_id_callback(unsigned long (*func)(void));
206 unsigned long (*CRYPTO_get_id_callback(void))(void);
207 unsigned long CRYPTO_thread_id(void);
209 we now have additional functions
211 void CRYPTO_set_idptr_callback(void *(*func)(void));
212 void *(*CRYPTO_get_idptr_callback(void))(void);
213 void *CRYPTO_thread_idptr(void);
215 also in <openssl/crypto.h>. The default value for
216 CRYPTO_thread_idptr() if the application has not provided its own
220 *) Change the array representation of binary polynomials: the list
221 of degrees of non-zero coefficients is now terminated with -1.
222 Previously it was terminated with 0, which was also part of the
223 value; thus, the array representation was not applicable to
224 polynomials where t^0 has coefficient zero. This change makes
225 the array representation useful in a more general context.
228 *) Various modifications and fixes to SSL/TLS cipher string
229 handling. For ECC, the code now distinguishes between fixed ECDH
230 with RSA certificates on the one hand and with ECDSA certificates
231 on the other hand, since these are separate ciphersuites. The
232 unused code for Fortezza ciphersuites has been removed.
234 For consistency with EDH, ephemeral ECDH is now called "EECDH"
235 (not "ECDHE"). For consistency with the code for DH
236 certificates, use of ECDH certificates is now considered ECDH
237 authentication, not RSA or ECDSA authentication (the latter is
238 merely the CA's signing algorithm and not actively used in the
241 The temporary ciphersuite alias "ECCdraft" is no longer
242 available, and ECC ciphersuites are no longer excluded from "ALL"
243 and "DEFAULT". The following aliases now exist for RFC 4492
244 ciphersuites, most of these by analogy with the DH case:
246 kECDHr - ECDH cert, signed with RSA
247 kECDHe - ECDH cert, signed with ECDSA
248 kECDH - ECDH cert (signed with either RSA or ECDSA)
249 kEECDH - ephemeral ECDH
250 ECDH - ECDH cert or ephemeral ECDH
256 AECDH - anonymous ECDH
257 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
261 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
262 Use correct micalg parameters depending on digest(s) in signed message.
265 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
266 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
269 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
270 an engine to register a method. Add ENGINE lookups for methods and
271 functional reference processing.
274 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
275 EVP_{Sign,Verify}* which allow an application to customise the signature
279 *) New -resign option to smime utility. This adds one or more signers
280 to an existing PKCS#7 signedData structure. Also -md option to use an
281 alternative message digest algorithm for signing.
284 *) Tidy up PKCS#7 routines and add new functions to make it easier to
285 create PKCS7 structures containing multiple signers. Update smime
286 application to support multiple signers.
289 *) New -macalg option to pkcs12 utility to allow setting of an alternative
293 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
294 Reorganize PBE internals to lookup from a static table using NIDs,
295 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
296 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
297 PRF which will be automatically used with PBES2.
300 *) Replace the algorithm specific calls to generate keys in "req" with the
304 *) Update PKCS#7 enveloped data routines to use new API. This is now
305 supported by any public key method supporting the encrypt operation. A
306 ctrl is added to allow the public key algorithm to examine or modify
307 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
311 *) Add a ctrl to asn1 method to allow a public key algorithm to express
312 a default digest type to use. In most cases this will be SHA1 but some
313 algorithms (such as GOST) need to specify an alternative digest. The
314 return value indicates how strong the prefernce is 1 means optional and
315 2 is mandatory (that is it is the only supported type). Modify
316 ASN1_item_sign() to accept a NULL digest argument to indicate it should
317 use the default md. Update openssl utilities to use the default digest
318 type for signing if it is not explicitly indicated.
321 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
322 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
323 signing method from the key type. This effectively removes the link
324 between digests and public key types.
327 *) Add an OID cross reference table and utility functions. Its purpose is to
328 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
329 rsaEncryption. This will allow some of the algorithm specific hackery
330 needed to use the correct OID to be removed.
333 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
334 structures for PKCS7_sign(). They are now set up by the relevant public
338 *) Add provisional EC pkey method with support for ECDSA and ECDH.
341 *) Add support for key derivation (agreement) in the API, DH method and
345 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
346 public and private key formats. As a side effect these add additional
347 command line functionality not previously available: DSA signatures can be
348 generated and verified using pkeyutl and DH key support and generation in
353 [Oliver Tappe <zooey@hirschkaefer.de>]
355 *) New make target "install_html_docs" installs HTML renditions of the
357 [Oliver Tappe <zooey@hirschkaefer.de>]
359 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
360 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
361 support key and parameter generation and add initial key generation
362 functionality for RSA.
365 *) Add functions for main EVP_PKEY_method operations. The undocumented
366 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
367 EVP_PKEY_{encrypt,decrypt}_old.
370 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
371 key API, doesn't do much yet.
374 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
375 public key algorithms. New option to openssl utility:
376 "list-public-key-algorithms" to print out info.
379 *) Implement the Supported Elliptic Curves Extension for
380 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
383 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
384 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
387 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
388 utilities such as rsa, dsa, dsaparam etc except they process any key
392 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
393 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
394 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
398 *) Initial support for pluggable public key ASN1.
399 De-spaghettify the public key ASN1 handling. Move public and private
400 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
401 algorithm specific handling to a single module within the relevant
402 algorithm directory. Add functions to allow (near) opaque processing
403 of public and private key structures.
406 *) Implement the Supported Point Formats Extension for
407 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
410 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
411 for the psk identity [hint] and the psk callback functions to the
412 SSL_SESSION, SSL and SSL_CTX structure.
415 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
419 SSL_CTX_use_psk_identity_hint
420 SSL_get_psk_identity_hint
422 SSL_use_psk_identity_hint
424 [Mika Kousa and Pasi Eronen of Nokia Corporation]
426 *) Add RFC 3161 compliant time stamp request creation, response generation
427 and response verification functionality.
428 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
430 *) Add initial support for TLS extensions, specifically for the server_name
431 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
432 have new members for a host name. The SSL data structure has an
433 additional member SSL_CTX *initial_ctx so that new sessions can be
434 stored in that context to allow for session resumption, even after the
435 SSL has been switched to a new SSL_CTX in reaction to a client's
436 server_name extension.
438 New functions (subject to change):
441 SSL_get_servername_type()
444 New CTRL codes and macros (subject to change):
446 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
447 - SSL_CTX_set_tlsext_servername_callback()
448 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
449 - SSL_CTX_set_tlsext_servername_arg()
450 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
452 openssl s_client has a new '-servername ...' option.
454 openssl s_server has new options '-servername_host ...', '-cert2 ...',
455 '-key2 ...', '-servername_fatal' (subject to change). This allows
456 testing the HostName extension for a specific single host name ('-cert'
457 and '-key' remain fallbacks for handshakes without HostName
458 negotiation). If the unrecogninzed_name alert has to be sent, this by
459 default is a warning; it becomes fatal with the '-servername_fatal'
462 [Peter Sylvester, Remy Allais, Christophe Renou]
464 *) Whirlpool hash implementation is added.
467 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
468 bn(64,32). Because of instruction set limitations it doesn't have
469 any negative impact on performance. This was done mostly in order
470 to make it possible to share assembler modules, such as bn_mul_mont
471 implementations, between 32- and 64-bit builds without hassle.
474 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
475 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
479 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
480 dedicated Montgomery multiplication procedure, is introduced.
481 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
482 "64-bit" performance on certain 32-bit targets.
485 *) New option SSL_OP_NO_COMP to disable use of compression selectively
486 in SSL structures. New SSL ctrl to set maximum send fragment size.
487 Save memory by seeting the I/O buffer sizes dynamically instead of
488 using the maximum available value.
491 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
492 in addition to the text details.
495 *) Very, very preliminary EXPERIMENTAL support for printing of general
496 ASN1 structures. This currently produces rather ugly output and doesn't
497 handle several customised structures at all.
500 *) Integrated support for PVK file format and some related formats such
501 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
502 these in the 'rsa' and 'dsa' utilities.
505 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
508 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
509 place for the (very old) "NETSCAPE" format certificates which are now
510 handled using new ASN1 code equivalents.
513 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
514 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
515 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
518 *) Modify CRL distribution points extension code to print out previously
519 unsupported fields. Enhance extension setting code to allow setting of
523 *) Add print and set support for Issuing Distribution Point CRL extension.
526 *) Change 'Configure' script to enable Camellia by default.
529 Changes between 0.9.8e and 0.9.8f [xx XXX xxxx]
531 *) Mitigate attack on final subtraction in Montgomery reduction.
534 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
535 (which previously caused an internal error).
538 *) Squeeze another 10% out of IGE mode when in != out.
541 *) AES IGE mode speedup.
542 [Dean Gaudet (Google)]
544 *) Add the Korean symmetric 128-bit cipher SEED (see
545 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
546 add SEED ciphersuites from RFC 4162:
548 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
549 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
550 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
551 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
553 To minimize changes between patchlevels in the OpenSSL 0.9.8
554 series, SEED remains excluded from compilation unless OpenSSL
555 is configured with 'enable-seed'.
558 *) Mitigate branch prediction attacks, which can be practical if a
559 single processor is shared, allowing a spy process to extract
560 information. For detailed background information, see
561 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
562 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
563 and Necessary Software Countermeasures"). The core of the change
564 are new versions BN_div_no_branch() and
565 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
566 respectively, which are slower, but avoid the security-relevant
567 conditional branches. These are automatically called by BN_div()
568 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
569 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
570 remove a conditional branch.
572 BN_FLG_CONSTTIME is the new name for the previous
573 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
574 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
575 in the exponent causes BN_mod_exp_mont() to use the alternative
576 implementation in BN_mod_exp_mont_consttime().) The old name
577 remains as a deprecated alias.
579 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
580 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
581 constant-time implementations for more than just exponentiation.
582 Here too the old name is kept as a deprecated alias.
584 BN_BLINDING_new() will now use BN_dup() for the modulus so that
585 the BN_BLINDING structure gets an independent copy of the
586 modulus. This means that the previous "BIGNUM *m" argument to
587 BN_BLINDING_new() and to BN_BLINDING_create_param() now
588 essentially becomes "const BIGNUM *m", although we can't actually
589 change this in the header file before 0.9.9. It allows
590 RSA_setup_blinding() to use BN_with_flags() on the modulus to
591 enable BN_FLG_CONSTTIME.
593 [Matthew D Wood (Intel Corp)]
595 *) In the SSL/TLS server implementation, be strict about session ID
596 context matching (which matters if an application uses a single
597 external cache for different purposes). Previously,
598 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
599 set. This did ensure strict client verification, but meant that,
600 with applications using a single external cache for quite
601 different requirements, clients could circumvent ciphersuite
602 restrictions for a given session ID context by starting a session
603 in a different context.
606 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
607 a ciphersuite string such as "DEFAULT:RSA" cannot enable
608 authentication-only ciphersuites.
611 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
613 *) Since AES128 and AES256 (and similarly Camellia128 and
614 Camellia256) share a single mask bit in the logic of
615 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
616 kludge to work properly if AES128 is available and AES256 isn't
617 (or if Camellia128 is available and Camellia256 isn't).
620 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
621 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
622 When a point or a seed is encoded in a BIT STRING, we need to
623 prevent the removal of trailing zero bits to get the proper DER
624 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
625 of a NamedBitList, for which trailing 0 bits need to be removed.)
628 *) Have SSL/TLS server implementation tolerate "mismatched" record
629 protocol version while receiving ClientHello even if the
630 ClientHello is fragmented. (The server can't insist on the
631 particular protocol version it has chosen before the ServerHello
632 message has informed the client about his choice.)
635 *) Add RFC 3779 support.
636 [Rob Austein for ARIN, Ben Laurie]
638 *) Load error codes if they are not already present instead of using a
639 static variable. This allows them to be cleanly unloaded and reloaded.
640 Improve header file function name parsing.
643 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
644 or CAPABILITY handshake as required by RFCs.
647 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
649 *) Introduce limits to prevent malicious keys being able to
650 cause a denial of service. (CVE-2006-2940)
651 [Steve Henson, Bodo Moeller]
653 *) Fix ASN.1 parsing of certain invalid structures that can result
654 in a denial of service. (CVE-2006-2937) [Steve Henson]
656 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
657 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
659 *) Fix SSL client code which could crash if connecting to a
660 malicious SSLv2 server. (CVE-2006-4343)
661 [Tavis Ormandy and Will Drewry, Google Security Team]
663 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
664 match only those. Before that, "AES256-SHA" would be interpreted
665 as a pattern and match "AES128-SHA" too (since AES128-SHA got
666 the same strength classification in 0.9.7h) as we currently only
667 have a single AES bit in the ciphersuite description bitmap.
668 That change, however, also applied to ciphersuite strings such as
669 "RC4-MD5" that intentionally matched multiple ciphersuites --
670 namely, SSL 2.0 ciphersuites in addition to the more common ones
671 from SSL 3.0/TLS 1.0.
673 So we change the selection algorithm again: Naming an explicit
674 ciphersuite selects this one ciphersuite, and any other similar
675 ciphersuite (same bitmap) from *other* protocol versions.
676 Thus, "RC4-MD5" again will properly select both the SSL 2.0
677 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
679 Since SSL 2.0 does not have any ciphersuites for which the
680 128/256 bit distinction would be relevant, this works for now.
681 The proper fix will be to use different bits for AES128 and
682 AES256, which would have avoided the problems from the beginning;
683 however, bits are scarce, so we can only do this in a new release
684 (not just a patchlevel) when we can change the SSL_CIPHER
685 definition to split the single 'unsigned long mask' bitmap into
686 multiple values to extend the available space.
690 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
692 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
693 (CVE-2006-4339) [Ben Laurie and Google Security Team]
695 *) Add AES IGE and biIGE modes.
698 *) Change the Unix randomness entropy gathering to use poll() when
699 possible instead of select(), since the latter has some
700 undesirable limitations.
701 [Darryl Miles via Richard Levitte and Bodo Moeller]
703 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
704 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
705 cannot be implicitly activated as part of, e.g., the "AES" alias.
706 However, please upgrade to OpenSSL 0.9.9[-dev] for
707 non-experimental use of the ECC ciphersuites to get TLS extension
708 support, which is required for curve and point format negotiation
709 to avoid potential handshake problems.
712 *) Disable rogue ciphersuites:
714 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
715 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
716 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
718 The latter two were purportedly from
719 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
722 Also deactivate the remaining ciphersuites from
723 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
724 unofficial, and the ID has long expired.
727 *) Fix RSA blinding Heisenbug (problems sometimes occured on
728 dual-core machines) and other potential thread-safety issues.
731 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
732 versions), which is now available for royalty-free use
733 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
734 Also, add Camellia TLS ciphersuites from RFC 4132.
736 To minimize changes between patchlevels in the OpenSSL 0.9.8
737 series, Camellia remains excluded from compilation unless OpenSSL
738 is configured with 'enable-camellia'.
741 *) Disable the padding bug check when compression is in use. The padding
742 bug check assumes the first packet is of even length, this is not
743 necessarily true if compresssion is enabled and can result in false
744 positives causing handshake failure. The actual bug test is ancient
745 code so it is hoped that implementations will either have fixed it by
746 now or any which still have the bug do not support compression.
749 Changes between 0.9.8a and 0.9.8b [04 May 2006]
751 *) When applying a cipher rule check to see if string match is an explicit
752 cipher suite and only match that one cipher suite if it is.
755 *) Link in manifests for VC++ if needed.
756 [Austin Ziegler <halostatue@gmail.com>]
758 *) Update support for ECC-based TLS ciphersuites according to
759 draft-ietf-tls-ecc-12.txt with proposed changes (but without
760 TLS extensions, which are supported starting with the 0.9.9
761 branch, not in the OpenSSL 0.9.8 branch).
764 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
765 opaque EVP_CIPHER_CTX handling.
768 *) Fixes and enhancements to zlib compression code. We now only use
769 "zlib1.dll" and use the default __cdecl calling convention on Win32
770 to conform with the standards mentioned here:
771 http://www.zlib.net/DLL_FAQ.txt
772 Static zlib linking now works on Windows and the new --with-zlib-include
773 --with-zlib-lib options to Configure can be used to supply the location
774 of the headers and library. Gracefully handle case where zlib library
778 *) Several fixes and enhancements to the OID generation code. The old code
779 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
780 handle numbers larger than ULONG_MAX, truncated printing and had a
781 non standard OBJ_obj2txt() behaviour.
784 *) Add support for building of engines under engine/ as shared libraries
785 under VC++ build system.
788 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
789 Hopefully, we will not see any false combination of paths any more.
792 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
794 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
795 (part of SSL_OP_ALL). This option used to disable the
796 countermeasure against man-in-the-middle protocol-version
797 rollback in the SSL 2.0 server implementation, which is a bad
798 idea. (CVE-2005-2969)
800 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
801 for Information Security, National Institute of Advanced Industrial
802 Science and Technology [AIST], Japan)]
804 *) Add two function to clear and return the verify parameter flags.
807 *) Keep cipherlists sorted in the source instead of sorting them at
808 runtime, thus removing the need for a lock.
811 *) Avoid some small subgroup attacks in Diffie-Hellman.
812 [Nick Mathewson and Ben Laurie]
814 *) Add functions for well-known primes.
817 *) Extended Windows CE support.
818 [Satoshi Nakamura and Andy Polyakov]
820 *) Initialize SSL_METHOD structures at compile time instead of during
821 runtime, thus removing the need for a lock.
824 *) Make PKCS7_decrypt() work even if no certificate is supplied by
825 attempting to decrypt each encrypted key in turn. Add support to
829 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
831 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
834 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
837 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
838 key into the same file any more.
841 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
844 *) Add -utf8 command line and config file option to 'ca'.
845 [Stefan <stf@udoma.org]
847 *) Removed the macro des_crypt(), as it seems to conflict with some
848 libraries. Use DES_crypt().
851 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
852 involves renaming the source and generated shared-libs for
853 both. The engines will accept the corrected or legacy ids
854 ('ncipher' and '4758_cca' respectively) when binding. NB,
855 this only applies when building 'shared'.
856 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
858 *) Add attribute functions to EVP_PKEY structure. Modify
859 PKCS12_create() to recognize a CSP name attribute and
860 use it. Make -CSP option work again in pkcs12 utility.
863 *) Add new functionality to the bn blinding code:
864 - automatic re-creation of the BN_BLINDING parameters after
865 a fixed number of uses (currently 32)
866 - add new function for parameter creation
867 - introduce flags to control the update behaviour of the
868 BN_BLINDING parameters
869 - hide BN_BLINDING structure
870 Add a second BN_BLINDING slot to the RSA structure to improve
871 performance when a single RSA object is shared among several
875 *) Add support for DTLS.
876 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
878 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
879 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
882 *) Remove buggy and incompletet DH cert support from
883 ssl/ssl_rsa.c and ssl/s3_both.c
886 *) Use SHA-1 instead of MD5 as the default digest algorithm for
887 the apps/openssl applications.
890 *) Compile clean with "-Wall -Wmissing-prototypes
891 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
892 DEBUG_SAFESTACK must also be set.
895 *) Change ./Configure so that certain algorithms can be disabled by default.
896 The new counterpiece to "no-xxx" is "enable-xxx".
898 The patented RC5 and MDC2 algorithms will now be disabled unless
899 "enable-rc5" and "enable-mdc2", respectively, are specified.
901 (IDEA remains enabled despite being patented. This is because IDEA
902 is frequently required for interoperability, and there is no license
903 fee for non-commercial use. As before, "no-idea" can be used to
904 avoid this algorithm.)
908 *) Add processing of proxy certificates (see RFC 3820). This work was
909 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
910 EGEE (Enabling Grids for E-science in Europe).
913 *) RC4 performance overhaul on modern architectures/implementations, such
914 as Intel P4, IA-64 and AMD64.
917 *) New utility extract-section.pl. This can be used specify an alternative
918 section number in a pod file instead of having to treat each file as
919 a separate case in Makefile. This can be done by adding two lines to the
922 =for comment openssl_section:XXX
924 The blank line is mandatory.
928 *) New arguments -certform, -keyform and -pass for s_client and s_server
929 to allow alternative format key and certificate files and passphrase
933 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
934 update associated structures and add various utility functions.
936 Add new policy related verify parameters, include policy checking in
937 standard verify code. Enhance 'smime' application with extra parameters
938 to support policy checking and print out.
941 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
942 Nehemiah processors. These extensions support AES encryption in hardware
943 as well as RNG (though RNG support is currently disabled).
944 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
946 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
949 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
950 [Andy Polyakov and a number of other people]
952 *) Improved PowerPC platform support. Most notably BIGNUM assembler
953 implementation contributed by IBM.
954 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
956 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
957 exponent rather than 'unsigned long'. There is a corresponding change to
958 the new 'rsa_keygen' element of the RSA_METHOD structure.
959 [Jelte Jansen, Geoff Thorpe]
961 *) Functionality for creating the initial serial number file is now
962 moved from CA.pl to the 'ca' utility with a new option -create_serial.
964 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
965 number file to 1, which is bound to cause problems. To avoid
966 the problems while respecting compatibility between different 0.9.7
967 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
968 CA.pl for serial number initialization. With the new release 0.9.8,
969 we can fix the problem directly in the 'ca' utility.)
972 *) Reduced header interdepencies by declaring more opaque objects in
973 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
974 give fewer recursive includes, which could break lazy source code - so
975 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
976 developers should define this symbol when building and using openssl to
977 ensure they track the recommended behaviour, interfaces, [etc], but
978 backwards-compatible behaviour prevails when this isn't defined.
981 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
984 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
985 This will generate a random key of the appropriate length based on the
986 cipher context. The EVP_CIPHER can provide its own random key generation
987 routine to support keys of a specific form. This is used in the des and
988 3des routines to generate a key of the correct parity. Update S/MIME
989 code to use new functions and hence generate correct parity DES keys.
990 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
991 valid (weak or incorrect parity).
994 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
995 as looking them up. This is useful when the verified structure may contain
996 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
997 present unless the new PKCS7_NO_CRL flag is asserted.
1000 *) Extend ASN1 oid configuration module. It now additionally accepts the
1003 shortName = some long name, 1.2.3.4
1006 *) Reimplemented the BN_CTX implementation. There is now no more static
1007 limitation on the number of variables it can handle nor the depth of the
1008 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1009 information can now expand as required, and rather than having a single
1010 static array of bignums, BN_CTX now uses a linked-list of such arrays
1011 allowing it to expand on demand whilst maintaining the usefulness of
1012 BN_CTX's "bundling".
1015 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1016 to allow all RSA operations to function using a single BN_CTX.
1019 *) Preliminary support for certificate policy evaluation and checking. This
1020 is initially intended to pass the tests outlined in "Conformance Testing
1021 of Relying Party Client Certificate Path Processing Logic" v1.07.
1024 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1025 remained unused and not that useful. A variety of other little bignum
1026 tweaks and fixes have also been made continuing on from the audit (see
1030 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1031 associated ASN1, EVP and SSL functions and old ASN1 macros.
1034 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1035 and this should never fail. So the return value from the use of
1036 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1037 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1040 *) BN_CTX_get() should return zero-valued bignums, providing the same
1041 initialised value as BN_new().
1042 [Geoff Thorpe, suggested by Ulf Möller]
1044 *) Support for inhibitAnyPolicy certificate extension.
1047 *) An audit of the BIGNUM code is underway, for which debugging code is
1048 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1049 is considered valid when processing BIGNUMs, and causes execution to
1050 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1051 further steps are taken to deliberately pollute unused data in BIGNUM
1052 structures to try and expose faulty code further on. For now, openssl will
1053 (in its default mode of operation) continue to tolerate the inconsistent
1054 forms that it has tolerated in the past, but authors and packagers should
1055 consider trying openssl and their own applications when compiled with
1056 these debugging symbols defined. It will help highlight potential bugs in
1057 their own code, and will improve the test coverage for OpenSSL itself. At
1058 some point, these tighter rules will become openssl's default to improve
1059 maintainability, though the assert()s and other overheads will remain only
1060 in debugging configurations. See bn.h for more details.
1061 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1063 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1064 that can only be obtained through BN_CTX_new() (which implicitly
1065 initialises it). The presence of this function only made it possible
1066 to overwrite an existing structure (and cause memory leaks).
1069 *) Because of the callback-based approach for implementing LHASH as a
1070 template type, lh_insert() adds opaque objects to hash-tables and
1071 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1072 to clean up those corresponding objects before destroying the hash table
1073 (and losing the object pointers). So some over-zealous constifications in
1074 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1075 objects as "const" and the lh_doall[_arg] callback wrappers are not
1076 prototyped to have "const" restrictions on the object pointers they are
1077 given (and so aren't required to cast them away any more).
1080 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1081 (speed) prefers to use its own implementation. The two implementations
1082 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1083 its object type properly exposed (MS_TM) instead of casting to/from "char
1084 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1085 aren't necessarily the greatest nomenclatures - but this is what was used
1086 internally to the implementation so I've used that for now.
1089 *) Ensure that deprecated functions do not get compiled when
1090 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1091 the self-tests were still using deprecated key-generation functions so
1092 these have been updated also.
1095 *) Reorganise PKCS#7 code to separate the digest location functionality
1096 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1097 New function PKCS7_set_digest() to set the digest type for PKCS#7
1098 digestedData type. Add additional code to correctly generate the
1099 digestedData type and add support for this type in PKCS7 initialization
1103 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1104 structure of type "other".
1107 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1108 sure the loop does correctly stop and breaking ("division by zero")
1109 modulus operations are not performed. The (pre-generated) prime
1110 table crypto/bn/bn_prime.h was already correct, but it could not be
1111 re-generated on some platforms because of the "division by zero"
1112 situation in the script.
1113 [Ralf S. Engelschall]
1115 *) Update support for ECC-based TLS ciphersuites according to
1116 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1117 SHA-1 now is only used for "small" curves (where the
1118 representation of a field element takes up to 24 bytes); for
1119 larger curves, the field element resulting from ECDH is directly
1120 used as premaster secret.
1121 [Douglas Stebila (Sun Microsystems Laboratories)]
1123 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1124 curve secp160r1 to the tests.
1125 [Douglas Stebila (Sun Microsystems Laboratories)]
1127 *) Add the possibility to load symbols globally with DSO.
1128 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1130 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1131 control of the error stack.
1134 *) Add support for STORE in ENGINE.
1137 *) Add the STORE type. The intention is to provide a common interface
1138 to certificate and key stores, be they simple file-based stores, or
1139 HSM-type store, or LDAP stores, or...
1140 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1143 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1144 pass a list of arguments to any function as well as provide a way
1145 for a function to pass data back to the caller.
1148 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1149 works like BUF_strdup() but can be used to duplicate a portion of
1150 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1154 *) Add the function sk_find_ex() which works like sk_find(), but will
1155 return an index to an element even if an exact match couldn't be
1156 found. The index is guaranteed to point at the element where the
1157 searched-for key would be inserted to preserve sorting order.
1160 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1161 takes an extra flags argument for optional functionality. Currently,
1162 the following flags are defined:
1164 OBJ_BSEARCH_VALUE_ON_NOMATCH
1165 This one gets OBJ_bsearch_ex() to return a pointer to the first
1166 element where the comparing function returns a negative or zero
1169 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1170 This one gets OBJ_bsearch_ex() to return a pointer to the first
1171 element where the comparing function returns zero. This is useful
1172 if there are more than one element where the comparing function
1176 *) Make it possible to create self-signed certificates with 'openssl ca'
1177 in such a way that the self-signed certificate becomes part of the
1178 CA database and uses the same mechanisms for serial number generation
1179 as all other certificate signing. The new flag '-selfsign' enables
1180 this functionality. Adapt CA.sh and CA.pl.in.
1183 *) Add functionality to check the public key of a certificate request
1184 against a given private. This is useful to check that a certificate
1185 request can be signed by that key (self-signing).
1188 *) Make it possible to have multiple active certificates with the same
1189 subject in the CA index file. This is done only if the keyword
1190 'unique_subject' is set to 'no' in the main CA section (default
1191 if 'CA_default') of the configuration file. The value is saved
1192 with the database itself in a separate index attribute file,
1193 named like the index file with '.attr' appended to the name.
1196 *) Generate muti valued AVAs using '+' notation in config files for
1200 *) Support for nameConstraints certificate extension.
1203 *) Support for policyConstraints certificate extension.
1206 *) Support for policyMappings certificate extension.
1209 *) Make sure the default DSA_METHOD implementation only uses its
1210 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1211 and change its own handlers to be NULL so as to remove unnecessary
1212 indirection. This lets alternative implementations fallback to the
1213 default implementation more easily.
1216 *) Support for directoryName in GeneralName related extensions
1220 *) Make it possible to link applications using Makefile.shared.
1221 Make that possible even when linking against static libraries!
1224 *) Support for single pass processing for S/MIME signing. This now
1225 means that S/MIME signing can be done from a pipe, in addition
1226 cleartext signing (multipart/signed type) is effectively streaming
1227 and the signed data does not need to be all held in memory.
1229 This is done with a new flag PKCS7_STREAM. When this flag is set
1230 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1231 is done after the data is output (and digests calculated) in
1232 SMIME_write_PKCS7().
1235 *) Add full support for -rpath/-R, both in shared libraries and
1236 applications, at least on the platforms where it's known how
1240 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1241 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1242 will now compute a table of multiples of the generator that
1243 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1244 faster (notably in the case of a single point multiplication,
1245 scalar * generator).
1246 [Nils Larsch, Bodo Moeller]
1248 *) IPv6 support for certificate extensions. The various extensions
1249 which use the IP:a.b.c.d can now take IPv6 addresses using the
1250 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1254 *) Added an ENGINE that implements RSA by performing private key
1255 exponentiations with the GMP library. The conversions to and from
1256 GMP's mpz_t format aren't optimised nor are any montgomery forms
1257 cached, and on x86 it appears OpenSSL's own performance has caught up.
1258 However there are likely to be other architectures where GMP could
1259 provide a boost. This ENGINE is not built in by default, but it can be
1260 specified at Configure time and should be accompanied by the necessary
1261 linker additions, eg;
1262 ./config -DOPENSSL_USE_GMP -lgmp
1265 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1266 testing availability of engines with "-t" - the old behaviour is
1267 produced by increasing the feature's verbosity with "-tt".
1270 *) ECDSA routines: under certain error conditions uninitialized BN objects
1271 could be freed. Solution: make sure initialization is performed early
1272 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1276 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1277 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1278 software implementations. For DSA and DH, parameter generation can
1279 also be overriden by providing the appropriate method callbacks.
1282 *) Change the "progress" mechanism used in key-generation and
1283 primality testing to functions that take a new BN_GENCB pointer in
1284 place of callback/argument pairs. The new API functions have "_ex"
1285 postfixes and the older functions are reimplemented as wrappers for
1286 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1287 declarations of the old functions to help (graceful) attempts to
1288 migrate to the new functions. Also, the new key-generation API
1289 functions operate on a caller-supplied key-structure and return
1290 success/failure rather than returning a key or NULL - this is to
1291 help make "keygen" another member function of RSA_METHOD etc.
1293 Example for using the new callback interface:
1295 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1299 BN_GENCB_set(&my_cb, my_callback, my_arg);
1301 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1302 /* For the meaning of a, b in calls to my_callback(), see the
1303 * documentation of the function that calls the callback.
1304 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1305 * my_callback should return 1 if it wants BN_is_prime_ex()
1306 * to continue, or 0 to stop.
1311 *) Change the ZLIB compression method to be stateful, and make it
1312 available to TLS with the number defined in
1313 draft-ietf-tls-compression-04.txt.
1316 *) Add the ASN.1 structures and functions for CertificatePair, which
1317 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1319 CertificatePair ::= SEQUENCE {
1320 forward [0] Certificate OPTIONAL,
1321 reverse [1] Certificate OPTIONAL,
1322 -- at least one of the pair shall be present -- }
1324 Also implement the PEM functions to read and write certificate
1325 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1327 This needed to be defined, mostly for the sake of the LDAP
1328 attribute crossCertificatePair, but may prove useful elsewhere as
1332 *) Make it possible to inhibit symlinking of shared libraries in
1333 Makefile.shared, for Cygwin's sake.
1336 *) Extend the BIGNUM API by creating a function
1337 void BN_set_negative(BIGNUM *a, int neg);
1338 and a macro that behave like
1339 int BN_is_negative(const BIGNUM *a);
1341 to avoid the need to access 'a->neg' directly in applications.
1344 *) Implement fast modular reduction for pseudo-Mersenne primes
1345 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1346 EC_GROUP_new_curve_GFp() will now automatically use this
1348 [Nils Larsch <nla@trustcenter.de>]
1350 *) Add new lock type (CRYPTO_LOCK_BN).
1353 *) Change the ENGINE framework to automatically load engines
1354 dynamically from specific directories unless they could be
1355 found to already be built in or loaded. Move all the
1356 current engines except for the cryptodev one to a new
1358 The engines in engines/ are built as shared libraries if
1359 the "shared" options was given to ./Configure or ./config.
1360 Otherwise, they are inserted in libcrypto.a.
1361 /usr/local/ssl/engines is the default directory for dynamic
1362 engines, but that can be overriden at configure time through
1363 the usual use of --prefix and/or --openssldir, and at run
1364 time with the environment variable OPENSSL_ENGINES.
1365 [Geoff Thorpe and Richard Levitte]
1367 *) Add Makefile.shared, a helper makefile to build shared
1368 libraries. Addapt Makefile.org.
1371 *) Add version info to Win32 DLLs.
1372 [Peter 'Luna' Runestig" <peter@runestig.com>]
1374 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1375 can be added using this API to created arbitrary PKCS#12
1376 files while avoiding the low level API.
1378 New options to PKCS12_create(), key or cert can be NULL and
1379 will then be omitted from the output file. The encryption
1380 algorithm NIDs can be set to -1 for no encryption, the mac
1381 iteration count can be set to 0 to omit the mac.
1383 Enhance pkcs12 utility by making the -nokeys and -nocerts
1384 options work when creating a PKCS#12 file. New option -nomac
1385 to omit the mac, NONE can be set for an encryption algorithm.
1386 New code is modified to use the enhanced PKCS12_create()
1387 instead of the low level API.
1390 *) Extend ASN1 encoder to support indefinite length constructed
1391 encoding. This can output sequences tags and octet strings in
1392 this form. Modify pk7_asn1.c to support indefinite length
1393 encoding. This is experimental and needs additional code to
1394 be useful, such as an ASN1 bio and some enhanced streaming
1397 Extend template encode functionality so that tagging is passed
1398 down to the template encoder.
1401 *) Let 'openssl req' fail if an argument to '-newkey' is not
1402 recognized instead of using RSA as a default.
1405 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1406 As these are not official, they are not included in "ALL";
1407 the "ECCdraft" ciphersuite group alias can be used to select them.
1408 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1410 *) Add ECDH engine support.
1411 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1413 *) Add ECDH in new directory crypto/ecdh/.
1414 [Douglas Stebila (Sun Microsystems Laboratories)]
1416 *) Let BN_rand_range() abort with an error after 100 iterations
1417 without success (which indicates a broken PRNG).
1420 *) Change BN_mod_sqrt() so that it verifies that the input value
1421 is really the square of the return value. (Previously,
1422 BN_mod_sqrt would show GIGO behaviour.)
1425 *) Add named elliptic curves over binary fields from X9.62, SECG,
1426 and WAP/WTLS; add OIDs that were still missing.
1428 [Sheueling Chang Shantz and Douglas Stebila
1429 (Sun Microsystems Laboratories)]
1431 *) Extend the EC library for elliptic curves over binary fields
1432 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1435 EC_GF2m_simple_method
1439 EC_GROUP_new_curve_GF2m
1440 EC_GROUP_set_curve_GF2m
1441 EC_GROUP_get_curve_GF2m
1442 EC_POINT_set_affine_coordinates_GF2m
1443 EC_POINT_get_affine_coordinates_GF2m
1444 EC_POINT_set_compressed_coordinates_GF2m
1446 Point compression for binary fields is disabled by default for
1447 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1450 As binary polynomials are represented as BIGNUMs, various members
1451 of the EC_GROUP and EC_POINT data structures can be shared
1452 between the implementations for prime fields and binary fields;
1453 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1454 are essentially identical to their ..._GFp counterparts.
1455 (For simplicity, the '..._GFp' prefix has been dropped from
1456 various internal method names.)
1458 An internal 'field_div' method (similar to 'field_mul' and
1459 'field_sqr') has been added; this is used only for binary fields.
1461 [Sheueling Chang Shantz and Douglas Stebila
1462 (Sun Microsystems Laboratories)]
1464 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1465 through methods ('mul', 'precompute_mult').
1467 The generic implementations (now internally called 'ec_wNAF_mul'
1468 and 'ec_wNAF_precomputed_mult') remain the default if these
1469 methods are undefined.
1471 [Sheueling Chang Shantz and Douglas Stebila
1472 (Sun Microsystems Laboratories)]
1474 *) New function EC_GROUP_get_degree, which is defined through
1475 EC_METHOD. For curves over prime fields, this returns the bit
1476 length of the modulus.
1478 [Sheueling Chang Shantz and Douglas Stebila
1479 (Sun Microsystems Laboratories)]
1481 *) New functions EC_GROUP_dup, EC_POINT_dup.
1482 (These simply call ..._new and ..._copy).
1484 [Sheueling Chang Shantz and Douglas Stebila
1485 (Sun Microsystems Laboratories)]
1487 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1488 Polynomials are represented as BIGNUMs (where the sign bit is not
1489 used) in the following functions [macros]:
1492 BN_GF2m_sub [= BN_GF2m_add]
1493 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
1494 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
1495 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
1497 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
1498 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
1499 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
1500 BN_GF2m_cmp [= BN_ucmp]
1502 (Note that only the 'mod' functions are actually for fields GF(2^m).
1503 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
1505 For some functions, an the irreducible polynomial defining a
1506 field can be given as an 'unsigned int[]' with strictly
1507 decreasing elements giving the indices of those bits that are set;
1508 i.e., p[] represents the polynomial
1509 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
1511 p[0] > p[1] > ... > p[k] = 0.
1512 This applies to the following functions:
1517 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
1518 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
1520 BN_GF2m_mod_sqrt_arr
1521 BN_GF2m_mod_solve_quad_arr
1525 Conversion can be performed by the following functions:
1530 bntest.c has additional tests for binary polynomial arithmetic.
1532 Two implementations for BN_GF2m_mod_div() are available.
1533 The default algorithm simply uses BN_GF2m_mod_inv() and
1534 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
1535 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
1536 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
1538 [Sheueling Chang Shantz and Douglas Stebila
1539 (Sun Microsystems Laboratories)]
1541 *) Add new error code 'ERR_R_DISABLED' that can be used when some
1542 functionality is disabled at compile-time.
1543 [Douglas Stebila <douglas.stebila@sun.com>]
1545 *) Change default behaviour of 'openssl asn1parse' so that more
1546 information is visible when viewing, e.g., a certificate:
1548 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
1549 mode the content of non-printable OCTET STRINGs is output in a
1550 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
1551 avoid the appearance of a printable string.
1552 [Nils Larsch <nla@trustcenter.de>]
1554 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
1556 EC_GROUP_set_asn1_flag()
1557 EC_GROUP_get_asn1_flag()
1558 EC_GROUP_set_point_conversion_form()
1559 EC_GROUP_get_point_conversion_form()
1560 These control ASN1 encoding details:
1561 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
1562 has been set to OPENSSL_EC_NAMED_CURVE.
1563 - Points are encoded in uncompressed form by default; options for
1564 asn1_for are as for point2oct, namely
1565 POINT_CONVERSION_COMPRESSED
1566 POINT_CONVERSION_UNCOMPRESSED
1567 POINT_CONVERSION_HYBRID
1569 Also add 'seed' and 'seed_len' members to EC_GROUP with access
1572 EC_GROUP_get0_seed()
1573 EC_GROUP_get_seed_len()
1574 This is used only for ASN1 purposes (so far).
1575 [Nils Larsch <nla@trustcenter.de>]
1577 *) Add 'field_type' member to EC_METHOD, which holds the NID
1578 of the appropriate field type OID. The new function
1579 EC_METHOD_get_field_type() returns this value.
1580 [Nils Larsch <nla@trustcenter.de>]
1585 EC_POINT_point2hex()
1586 EC_POINT_hex2point()
1587 providing useful interfaces to EC_POINT_point2oct() and
1588 EC_POINT_oct2point().
1589 [Nils Larsch <nla@trustcenter.de>]
1591 *) Change internals of the EC library so that the functions
1592 EC_GROUP_set_generator()
1593 EC_GROUP_get_generator()
1594 EC_GROUP_get_order()
1595 EC_GROUP_get_cofactor()
1596 are implemented directly in crypto/ec/ec_lib.c and not dispatched
1597 to methods, which would lead to unnecessary code duplication when
1598 adding different types of curves.
1599 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
1601 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
1602 arithmetic, and such that modified wNAFs are generated
1603 (which avoid length expansion in many cases).
1606 *) Add a function EC_GROUP_check_discriminant() (defined via
1607 EC_METHOD) that verifies that the curve discriminant is non-zero.
1609 Add a function EC_GROUP_check() that makes some sanity tests
1610 on a EC_GROUP, its generator and order. This includes
1611 EC_GROUP_check_discriminant().
1612 [Nils Larsch <nla@trustcenter.de>]
1614 *) Add ECDSA in new directory crypto/ecdsa/.
1616 Add applications 'openssl ecparam' and 'openssl ecdsa'
1617 (these are based on 'openssl dsaparam' and 'openssl dsa').
1619 ECDSA support is also included in various other files across the
1620 library. Most notably,
1621 - 'openssl req' now has a '-newkey ecdsa:file' option;
1622 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
1623 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
1624 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
1625 them suitable for ECDSA where domain parameters must be
1626 extracted before the specific public key;
1627 - ECDSA engine support has been added.
1628 [Nils Larsch <nla@trustcenter.de>]
1630 *) Include some named elliptic curves, and add OIDs from X9.62,
1631 SECG, and WAP/WTLS. Each curve can be obtained from the new
1633 EC_GROUP_new_by_curve_name(),
1634 and the list of available named curves can be obtained with
1635 EC_get_builtin_curves().
1636 Also add a 'curve_name' member to EC_GROUP objects, which can be
1638 EC_GROUP_set_curve_name()
1639 EC_GROUP_get_curve_name()
1640 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
1642 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
1643 was actually never needed) and in BN_mul(). The removal in BN_mul()
1644 required a small change in bn_mul_part_recursive() and the addition
1645 of the functions bn_cmp_part_words(), bn_sub_part_words() and
1646 bn_add_part_words(), which do the same thing as bn_cmp_words(),
1647 bn_sub_words() and bn_add_words() except they take arrays with
1651 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
1653 *) In the SSL/TLS server implementation, be strict about session ID
1654 context matching (which matters if an application uses a single
1655 external cache for different purposes). Previously,
1656 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1657 set. This did ensure strict client verification, but meant that,
1658 with applications using a single external cache for quite
1659 different requirements, clients could circumvent ciphersuite
1660 restrictions for a given session ID context by starting a session
1661 in a different context.
1664 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
1666 *) Cleanse PEM buffers before freeing them since they may contain
1668 [Benjamin Bennett <ben@psc.edu>]
1670 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1671 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1672 authentication-only ciphersuites.
1675 *) Since AES128 and AES256 share a single mask bit in the logic of
1676 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1677 kludge to work properly if AES128 is available and AES256 isn't.
1680 *) Expand security boundary to match 1.1.1 module.
1683 *) Remove redundant features: hash file source, editing of test vectors
1684 modify fipsld to use external fips_premain.c signature.
1687 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
1688 run algorithm test programs.
1691 *) Make algorithm test programs more tolerant of whitespace.
1694 *) Have SSL/TLS server implementation tolerate "mismatched" record
1695 protocol version while receiving ClientHello even if the
1696 ClientHello is fragmented. (The server can't insist on the
1697 particular protocol version it has chosen before the ServerHello
1698 message has informed the client about his choice.)
1701 *) Load error codes if they are not already present instead of using a
1702 static variable. This allows them to be cleanly unloaded and reloaded.
1705 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
1707 *) Introduce limits to prevent malicious keys being able to
1708 cause a denial of service. (CVE-2006-2940)
1709 [Steve Henson, Bodo Moeller]
1711 *) Fix ASN.1 parsing of certain invalid structures that can result
1712 in a denial of service. (CVE-2006-2937) [Steve Henson]
1714 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1715 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1717 *) Fix SSL client code which could crash if connecting to a
1718 malicious SSLv2 server. (CVE-2006-4343)
1719 [Tavis Ormandy and Will Drewry, Google Security Team]
1721 *) Change ciphersuite string processing so that an explicit
1722 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
1723 will no longer include "AES128-SHA"), and any other similar
1724 ciphersuite (same bitmap) from *other* protocol versions (so that
1725 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
1726 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
1727 changes from 0.9.8b and 0.9.8d.
1730 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
1732 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1733 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1735 *) Change the Unix randomness entropy gathering to use poll() when
1736 possible instead of select(), since the latter has some
1737 undesirable limitations.
1738 [Darryl Miles via Richard Levitte and Bodo Moeller]
1740 *) Disable rogue ciphersuites:
1742 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1743 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1744 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1746 The latter two were purportedly from
1747 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1750 Also deactive the remaining ciphersuites from
1751 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1752 unofficial, and the ID has long expired.
1755 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1756 dual-core machines) and other potential thread-safety issues.
1759 Changes between 0.9.7i and 0.9.7j [04 May 2006]
1761 *) Adapt fipsld and the build system to link against the validated FIPS
1762 module in FIPS mode.
1765 *) Fixes for VC++ 2005 build under Windows.
1768 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
1769 from a Windows bash shell such as MSYS. It is autodetected from the
1770 "config" script when run from a VC++ environment. Modify standard VC++
1771 build to use fipscanister.o from the GNU make build.
1774 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
1776 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
1777 The value now differs depending on if you build for FIPS or not.
1778 BEWARE! A program linked with a shared FIPSed libcrypto can't be
1779 safely run with a non-FIPSed libcrypto, as it may crash because of
1780 the difference induced by this change.
1783 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
1785 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1786 (part of SSL_OP_ALL). This option used to disable the
1787 countermeasure against man-in-the-middle protocol-version
1788 rollback in the SSL 2.0 server implementation, which is a bad
1789 idea. (CVE-2005-2969)
1791 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1792 for Information Security, National Institute of Advanced Industrial
1793 Science and Technology [AIST], Japan)]
1795 *) Minimal support for X9.31 signatures and PSS padding modes. This is
1796 mainly for FIPS compliance and not fully integrated at this stage.
1799 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
1800 the exponentiation using a fixed-length exponent. (Otherwise,
1801 the information leaked through timing could expose the secret key
1802 after many signatures; cf. Bleichenbacher's attack on DSA with
1806 *) Make a new fixed-window mod_exp implementation the default for
1807 RSA, DSA, and DH private-key operations so that the sequence of
1808 squares and multiplies and the memory access pattern are
1809 independent of the particular secret key. This will mitigate
1810 cache-timing and potential related attacks.
1812 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
1813 and this is automatically used by BN_mod_exp_mont() if the new flag
1814 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
1815 will use this BN flag for private exponents unless the flag
1816 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
1817 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
1819 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
1821 *) Change the client implementation for SSLv23_method() and
1822 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
1823 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
1824 (Previously, the SSL 2.0 backwards compatible Client Hello
1825 message format would be used even with SSL_OP_NO_SSLv2.)
1828 *) Add support for smime-type MIME parameter in S/MIME messages which some
1832 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
1833 a threadsafe manner. Modify rsa code to use new function and add calls
1834 to dsa and dh code (which had race conditions before).
1837 *) Include the fixed error library code in the C error file definitions
1838 instead of fixing them up at runtime. This keeps the error code
1839 structures constant.
1842 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
1844 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
1847 *) Fixes for newer kerberos headers. NB: the casts are needed because
1848 the 'length' field is signed on one version and unsigned on another
1849 with no (?) obvious way to tell the difference, without these VC++
1850 complains. Also the "definition" of FAR (blank) is no longer included
1851 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
1852 some needed definitions.
1855 *) Undo Cygwin change.
1858 *) Added support for proxy certificates according to RFC 3820.
1859 Because they may be a security thread to unaware applications,
1860 they must be explicitely allowed in run-time. See
1861 docs/HOWTO/proxy_certificates.txt for further information.
1864 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
1866 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
1867 server and client random values. Previously
1868 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
1869 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
1871 This change has negligible security impact because:
1873 1. Server and client random values still have 24 bytes of pseudo random
1876 2. Server and client random values are sent in the clear in the initial
1879 3. The master secret is derived using the premaster secret (48 bytes in
1880 size for static RSA ciphersuites) as well as client server and random
1883 The OpenSSL team would like to thank the UK NISCC for bringing this issue
1886 [Stephen Henson, reported by UK NISCC]
1888 *) Use Windows randomness collection on Cygwin.
1891 *) Fix hang in EGD/PRNGD query when communication socket is closed
1892 prematurely by EGD/PRNGD.
1893 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
1895 *) Prompt for pass phrases when appropriate for PKCS12 input format.
1898 *) Back-port of selected performance improvements from development
1899 branch, as well as improved support for PowerPC platforms.
1902 *) Add lots of checks for memory allocation failure, error codes to indicate
1903 failure and freeing up memory if a failure occurs.
1904 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
1906 *) Add new -passin argument to dgst.
1909 *) Perform some character comparisons of different types in X509_NAME_cmp:
1910 this is needed for some certificates that reencode DNs into UTF8Strings
1911 (in violation of RFC3280) and can't or wont issue name rollover
1915 *) Make an explicit check during certificate validation to see that
1916 the CA setting in each certificate on the chain is correct. As a
1917 side effect always do the following basic checks on extensions,
1918 not just when there's an associated purpose to the check:
1920 - if there is an unhandled critical extension (unless the user
1921 has chosen to ignore this fault)
1922 - if the path length has been exceeded (if one is set at all)
1923 - that certain extensions fit the associated purpose (if one has
1927 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
1929 *) Avoid a race condition when CRLs are checked in a multi threaded
1930 environment. This would happen due to the reordering of the revoked
1931 entries during signature checking and serial number lookup. Now the
1932 encoding is cached and the serial number sort performed under a lock.
1933 Add new STACK function sk_is_sorted().
1936 *) Add Delta CRL to the extension code.
1939 *) Various fixes to s3_pkt.c so alerts are sent properly.
1940 [David Holmes <d.holmes@f5.com>]
1942 *) Reduce the chances of duplicate issuer name and serial numbers (in
1943 violation of RFC3280) using the OpenSSL certificate creation utilities.
1944 This is done by creating a random 64 bit value for the initial serial
1945 number when a serial number file is created or when a self signed
1946 certificate is created using 'openssl req -x509'. The initial serial
1947 number file is created using 'openssl x509 -next_serial' in CA.pl
1948 rather than being initialized to 1.
1951 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
1953 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
1954 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
1955 [Joe Orton, Steve Henson]
1957 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
1959 [Joe Orton, Steve Henson]
1961 *) Make it possible to have multiple active certificates with the same
1962 subject in the CA index file. This is done only if the keyword
1963 'unique_subject' is set to 'no' in the main CA section (default
1964 if 'CA_default') of the configuration file. The value is saved
1965 with the database itself in a separate index attribute file,
1966 named like the index file with '.attr' appended to the name.
1969 *) X509 verify fixes. Disable broken certificate workarounds when
1970 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
1971 keyUsage extension present. Don't accept CRLs with unhandled critical
1972 extensions: since verify currently doesn't process CRL extensions this
1973 rejects a CRL with *any* critical extensions. Add new verify error codes
1977 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
1978 A clarification of RFC2560 will require the use of OCTET STRINGs and
1979 some implementations cannot handle the current raw format. Since OpenSSL
1980 copies and compares OCSP nonces as opaque blobs without any attempt at
1981 parsing them this should not create any compatibility issues.
1984 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
1985 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
1986 this HMAC (and other) operations are several times slower than OpenSSL
1990 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
1991 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
1993 *) Use the correct content when signing type "other".
1996 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
1998 *) Fix various bugs revealed by running the NISCC test suite:
2000 Stop out of bounds reads in the ASN1 code when presented with
2001 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2003 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2005 If verify callback ignores invalid public key errors don't try to check
2006 certificate signature with the NULL public key.
2010 *) New -ignore_err option in ocsp application to stop the server
2011 exiting on the first error in a request.
2014 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2015 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2019 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2020 extra data after the compression methods not only for TLS 1.0
2021 but also for SSL 3.0 (as required by the specification).
2022 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2024 *) Change X509_certificate_type() to mark the key as exported/exportable
2025 when it's 512 *bits* long, not 512 bytes.
2028 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2029 blocks during encryption.
2032 *) Various fixes to base64 BIO and non blocking I/O. On write
2033 flushes were not handled properly if the BIO retried. On read
2034 data was not being buffered properly and had various logic bugs.
2035 This also affects blocking I/O when the data being decoded is a
2039 *) Various S/MIME bugfixes and compatibility changes:
2040 output correct application/pkcs7 MIME type if
2041 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2042 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2043 of files as .eml work). Correctly handle very long lines in MIME
2047 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2049 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2050 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2051 a protocol version number mismatch like a decryption error
2052 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2055 *) Turn on RSA blinding by default in the default implementation
2056 to avoid a timing attack. Applications that don't want it can call
2057 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2058 They would be ill-advised to do so in most cases.
2059 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2061 *) Change RSA blinding code so that it works when the PRNG is not
2062 seeded (in this case, the secret RSA exponent is abused as
2063 an unpredictable seed -- if it is not unpredictable, there
2064 is no point in blinding anyway). Make RSA blinding thread-safe
2065 by remembering the creator's thread ID in rsa->blinding and
2066 having all other threads use local one-time blinding factors
2067 (this requires more computation than sharing rsa->blinding, but
2068 avoids excessive locking; and if an RSA object is not shared
2069 between threads, blinding will still be very fast).
2072 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2073 ENGINE as defaults for all supported algorithms irrespective of
2074 the 'flags' parameter. 'flags' is now honoured, so applications
2075 should make sure they are passing it correctly.
2078 *) Target "mingw" now allows native Windows code to be generated in
2079 the Cygwin environment as well as with the MinGW compiler.
2082 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2084 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2085 via timing by performing a MAC computation even if incorrrect
2086 block cipher padding has been found. This is a countermeasure
2087 against active attacks where the attacker has to distinguish
2088 between bad padding and a MAC verification error. (CVE-2003-0078)
2090 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2091 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2092 Martin Vuagnoux (EPFL, Ilion)]
2094 *) Make the no-err option work as intended. The intention with no-err
2095 is not to have the whole error stack handling routines removed from
2096 libcrypto, it's only intended to remove all the function name and
2097 reason texts, thereby removing some of the footprint that may not
2098 be interesting if those errors aren't displayed anyway.
2100 NOTE: it's still possible for any application or module to have it's
2101 own set of error texts inserted. The routines are there, just not
2102 used by default when no-err is given.
2105 *) Add support for FreeBSD on IA64.
2106 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2108 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2109 Kerberos function mit_des_cbc_cksum(). Before this change,
2110 the value returned by DES_cbc_cksum() was like the one from
2111 mit_des_cbc_cksum(), except the bytes were swapped.
2112 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2114 *) Allow an application to disable the automatic SSL chain building.
2115 Before this a rather primitive chain build was always performed in
2116 ssl3_output_cert_chain(): an application had no way to send the
2117 correct chain if the automatic operation produced an incorrect result.
2119 Now the chain builder is disabled if either:
2121 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2123 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2125 The reasoning behind this is that an application would not want the
2126 auto chain building to take place if extra chain certificates are
2127 present and it might also want a means of sending no additional
2128 certificates (for example the chain has two certificates and the
2132 *) Add the possibility to build without the ENGINE framework.
2133 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2135 *) Under Win32 gmtime() can return NULL: check return value in
2136 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2139 *) DSA routines: under certain error conditions uninitialized BN objects
2140 could be freed. Solution: make sure initialization is performed early
2141 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2142 Nils Larsch <nla@trustcenter.de> via PR#459)
2145 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2146 checked on reconnect on the client side, therefore session resumption
2147 could still fail with a "ssl session id is different" error. This
2148 behaviour is masked when SSL_OP_ALL is used due to
2149 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2150 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2151 followup to PR #377.
2154 *) IA-32 assembler support enhancements: unified ELF targets, support
2155 for SCO/Caldera platforms, fix for Cygwin shared build.
2158 *) Add support for FreeBSD on sparc64. As a consequence, support for
2159 FreeBSD on non-x86 processors is separate from x86 processors on
2160 the config script, much like the NetBSD support.
2161 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2163 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2165 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2168 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2169 code (06) was taken as the first octet of the session ID and the last
2170 octet was ignored consequently. As a result SSLv2 client side session
2171 caching could not have worked due to the session ID mismatch between
2173 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2177 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2178 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2182 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2183 seems that in spite of existing for more than a year, many application
2184 author have done nothing to provide the necessary callbacks, which
2185 means that this particular engine will not work properly anywhere.
2186 This is a very unfortunate situation which forces us, in the name
2187 of usability, to give the hw_ncipher.c a static lock, which is part
2189 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2190 appear in 0.9.8 or later. We EXPECT application authors to have
2191 dealt properly with this when 0.9.8 is released (unless we actually
2192 make such changes in the libcrypto locking code that changes will
2193 have to be made anyway).
2196 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2197 octets have been read, EOF or an error occurs. Without this change
2198 some truncated ASN1 structures will not produce an error.
2201 *) Disable Heimdal support, since it hasn't been fully implemented.
2202 Still give the possibility to force the use of Heimdal, but with
2203 warnings and a request that patches get sent to openssl-dev.
2206 *) Add the VC-CE target, introduce the WINCE sysname, and add
2207 INSTALL.WCE and appropriate conditionals to make it build.
2208 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2210 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2211 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2212 edit numbers of the version.
2213 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2215 *) Introduce safe string copy and catenation functions
2216 (BUF_strlcpy() and BUF_strlcat()).
2217 [Ben Laurie (CHATS) and Richard Levitte]
2219 *) Avoid using fixed-size buffers for one-line DNs.
2220 [Ben Laurie (CHATS)]
2222 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2223 resizing buffers containing secrets, and use where appropriate.
2224 [Ben Laurie (CHATS)]
2226 *) Avoid using fixed size buffers for configuration file location.
2227 [Ben Laurie (CHATS)]
2229 *) Avoid filename truncation for various CA files.
2230 [Ben Laurie (CHATS)]
2232 *) Use sizeof in preference to magic numbers.
2233 [Ben Laurie (CHATS)]
2235 *) Avoid filename truncation in cert requests.
2236 [Ben Laurie (CHATS)]
2238 *) Add assertions to check for (supposedly impossible) buffer
2240 [Ben Laurie (CHATS)]
2242 *) Don't cache truncated DNS entries in the local cache (this could
2243 potentially lead to a spoofing attack).
2244 [Ben Laurie (CHATS)]
2246 *) Fix various buffers to be large enough for hex/decimal
2247 representations in a platform independent manner.
2248 [Ben Laurie (CHATS)]
2250 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2251 resizing buffers containing secrets, and use where appropriate.
2252 [Ben Laurie (CHATS)]
2254 *) Add BIO_indent() to avoid much slightly worrying code to do
2256 [Ben Laurie (CHATS)]
2258 *) Convert sprintf()/BIO_puts() to BIO_printf().
2259 [Ben Laurie (CHATS)]
2261 *) buffer_gets() could terminate with the buffer only half
2263 [Ben Laurie (CHATS)]
2265 *) Add assertions to prevent user-supplied crypto functions from
2266 overflowing internal buffers by having large block sizes, etc.
2267 [Ben Laurie (CHATS)]
2269 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2271 [Ben Laurie (CHATS)]
2273 *) Eliminate unused copy of key in RC4.
2274 [Ben Laurie (CHATS)]
2276 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2277 [Ben Laurie (CHATS)]
2279 *) Fix off-by-one error in EGD path.
2280 [Ben Laurie (CHATS)]
2282 *) If RANDFILE path is too long, ignore instead of truncating.
2283 [Ben Laurie (CHATS)]
2285 *) Eliminate unused and incorrectly sized X.509 structure
2287 [Ben Laurie (CHATS)]
2289 *) Eliminate unused and dangerous function knumber().
2290 [Ben Laurie (CHATS)]
2292 *) Eliminate unused and dangerous structure, KSSL_ERR.
2293 [Ben Laurie (CHATS)]
2295 *) Protect against overlong session ID context length in an encoded
2296 session object. Since these are local, this does not appear to be
2298 [Ben Laurie (CHATS)]
2300 *) Change from security patch (see 0.9.6e below) that did not affect
2301 the 0.9.6 release series:
2303 Remote buffer overflow in SSL3 protocol - an attacker could
2304 supply an oversized master key in Kerberos-enabled versions.
2306 [Ben Laurie (CHATS)]
2308 *) Change the SSL kerb5 codes to match RFC 2712.
2311 *) Make -nameopt work fully for req and add -reqopt switch.
2312 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2314 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2315 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2317 *) Make sure tests can be performed even if the corresponding algorithms
2318 have been removed entirely. This was also the last step to make
2319 OpenSSL compilable with DJGPP under all reasonable conditions.
2320 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2322 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2323 to allow version independent disabling of normally unselected ciphers,
2324 which may be activated as a side-effect of selecting a single cipher.
2326 (E.g., cipher list string "RSA" enables ciphersuites that are left
2327 out of "ALL" because they do not provide symmetric encryption.
2328 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2329 [Lutz Jaenicke, Bodo Moeller]
2331 *) Add appropriate support for separate platform-dependent build
2332 directories. The recommended way to make a platform-dependent
2333 build directory is the following (tested on Linux), maybe with
2336 # Place yourself outside of the OpenSSL source tree. In
2337 # this example, the environment variable OPENSSL_SOURCE
2338 # is assumed to contain the absolute OpenSSL source directory.
2339 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2340 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2341 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2342 mkdir -p `dirname $F`
2343 ln -s $OPENSSL_SOURCE/$F $F
2346 To be absolutely sure not to disturb the source tree, a "make clean"
2347 is a good thing. If it isn't successfull, don't worry about it,
2348 it probably means the source directory is very clean.
2351 *) Make sure any ENGINE control commands make local copies of string
2352 pointers passed to them whenever necessary. Otherwise it is possible
2353 the caller may have overwritten (or deallocated) the original string
2354 data when a later ENGINE operation tries to use the stored values.
2355 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2357 *) Improve diagnostics in file reading and command-line digests.
2358 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2360 *) Add AES modes CFB and OFB to the object database. Correct an
2361 error in AES-CFB decryption.
2364 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2365 allows existing EVP_CIPHER_CTX structures to be reused after
2366 calling EVP_*Final(). This behaviour is used by encryption
2367 BIOs and some applications. This has the side effect that
2368 applications must explicitly clean up cipher contexts with
2369 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2372 *) Check the values of dna and dnb in bn_mul_recursive before calling
2373 bn_mul_comba (a non zero value means the a or b arrays do not contain
2374 n2 elements) and fallback to bn_mul_normal if either is not zero.
2377 *) Fix escaping of non-ASCII characters when using the -subj option
2378 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2381 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2382 form for "surname", serialNumber has no short form.
2383 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2384 therefore remove "mail" short name for "internet 7".
2385 The OID for unique identifiers in X509 certificates is
2386 x500UniqueIdentifier, not uniqueIdentifier.
2387 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2390 *) Add an "init" command to the ENGINE config module and auto initialize
2391 ENGINEs. Without any "init" command the ENGINE will be initialized
2392 after all ctrl commands have been executed on it. If init=1 the
2393 ENGINE is initailized at that point (ctrls before that point are run
2394 on the uninitialized ENGINE and after on the initialized one). If
2395 init=0 then the ENGINE will not be iniatialized at all.
2398 *) Fix the 'app_verify_callback' interface so that the user-defined
2399 argument is actually passed to the callback: In the
2400 SSL_CTX_set_cert_verify_callback() prototype, the callback
2401 declaration has been changed from
2404 int (*cb)(X509_STORE_CTX *,void *);
2405 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2406 i=s->ctx->app_verify_callback(&ctx)
2407 has been changed into
2408 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2410 To update applications using SSL_CTX_set_cert_verify_callback(),
2411 a dummy argument can be added to their callback functions.
2412 [D. K. Smetters <smetters@parc.xerox.com>]
2414 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2415 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2417 *) Add and OPENSSL_LOAD_CONF define which will cause
2418 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2419 This allows older applications to transparently support certain
2420 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2421 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2422 load the config file and OPENSSL_add_all_algorithms_conf() which will
2423 always load it have also been added.
2426 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2427 Adjust NIDs and EVP layer.
2428 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2430 *) Config modules support in openssl utility.
2432 Most commands now load modules from the config file,
2433 though in a few (such as version) this isn't done
2434 because it couldn't be used for anything.
2436 In the case of ca and req the config file used is
2437 the same as the utility itself: that is the -config
2438 command line option can be used to specify an
2442 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2443 use "openssl_conf" if filename is NULL use default openssl config file.
2446 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2447 config section name. Add a new flag to tolerate a missing config file
2448 and move code to CONF_modules_load_file().
2451 *) Support for crypto accelerator cards from Accelerated Encryption
2452 Processing, www.aep.ie. (Use engine 'aep')
2453 The support was copied from 0.9.6c [engine] and adapted/corrected
2454 to work with the new engine framework.
2455 [AEP Inc. and Richard Levitte]
2457 *) Support for SureWare crypto accelerator cards from Baltimore
2458 Technologies. (Use engine 'sureware')
2459 The support was copied from 0.9.6c [engine] and adapted
2460 to work with the new engine framework.
2463 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2464 make the newer ENGINE framework commands for the CHIL engine work.
2465 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2467 *) Make it possible to produce shared libraries on ReliantUNIX.
2468 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2470 *) Add the configuration target debug-linux-ppro.
2471 Make 'openssl rsa' use the general key loading routines
2472 implemented in apps.c, and make those routines able to
2473 handle the key format FORMAT_NETSCAPE and the variant
2475 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2477 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2478 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2480 *) Add -keyform to rsautl, and document -engine.
2481 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2483 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2484 BIO_R_NO_SUCH_FILE error code rather than the generic
2485 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2488 *) Add new functions
2490 ERR_peek_last_error_line
2491 ERR_peek_last_error_line_data.
2492 These are similar to
2495 ERR_peek_error_line_data,
2496 but report on the latest error recorded rather than the first one
2497 still in the error queue.
2498 [Ben Laurie, Bodo Moeller]
2500 *) default_algorithms option in ENGINE config module. This allows things
2502 default_algorithms = ALL
2503 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
2506 *) Prelminary ENGINE config module.
2509 *) New experimental application configuration code.
2512 *) Change the AES code to follow the same name structure as all other
2513 symmetric ciphers, and behave the same way. Move everything to
2514 the directory crypto/aes, thereby obsoleting crypto/rijndael.
2515 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2517 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
2518 [Ben Laurie and Theo de Raadt]
2520 *) Add option to output public keys in req command.
2521 [Massimiliano Pala madwolf@openca.org]
2523 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
2524 (up to about 10% better than before for P-192 and P-224).
2527 *) New functions/macros
2529 SSL_CTX_set_msg_callback(ctx, cb)
2530 SSL_CTX_set_msg_callback_arg(ctx, arg)
2531 SSL_set_msg_callback(ssl, cb)
2532 SSL_set_msg_callback_arg(ssl, arg)
2534 to request calling a callback function
2536 void cb(int write_p, int version, int content_type,
2537 const void *buf, size_t len, SSL *ssl, void *arg)
2539 whenever a protocol message has been completely received
2540 (write_p == 0) or sent (write_p == 1). Here 'version' is the
2541 protocol version according to which the SSL library interprets
2542 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
2543 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
2544 the content type as defined in the SSL 3.0/TLS 1.0 protocol
2545 specification (change_cipher_spec(20), alert(21), handshake(22)).
2546 'buf' and 'len' point to the actual message, 'ssl' to the
2547 SSL object, and 'arg' is the application-defined value set by
2548 SSL[_CTX]_set_msg_callback_arg().
2550 'openssl s_client' and 'openssl s_server' have new '-msg' options
2551 to enable a callback that displays all protocol messages.
2554 *) Change the shared library support so shared libraries are built as
2555 soon as the corresponding static library is finished, and thereby get
2556 openssl and the test programs linked against the shared library.
2557 This still only happens when the keyword "shard" has been given to
2558 the configuration scripts.
2560 NOTE: shared library support is still an experimental thing, and
2561 backward binary compatibility is still not guaranteed.
2562 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
2564 *) Add support for Subject Information Access extension.
2565 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2567 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
2568 additional bytes when new memory had to be allocated, not just
2569 when reusing an existing buffer.
2572 *) New command line and configuration option 'utf8' for the req command.
2573 This allows field values to be specified as UTF8 strings.
2576 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
2577 runs for the former and machine-readable output for the latter.
2580 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
2581 of the e-mail address in the DN (i.e., it will go into a certificate
2582 extension only). The new configuration file option 'email_in_dn = no'
2583 has the same effect.
2584 [Massimiliano Pala madwolf@openca.org]
2586 *) Change all functions with names starting with des_ to be starting
2587 with DES_ instead. Add wrappers that are compatible with libdes,
2588 but are named _ossl_old_des_*. Finally, add macros that map the
2589 des_* symbols to the corresponding _ossl_old_des_* if libdes
2590 compatibility is desired. If OpenSSL 0.9.6c compatibility is
2591 desired, the des_* symbols will be mapped to DES_*, with one
2594 Since we provide two compatibility mappings, the user needs to
2595 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
2596 compatibility is desired. The default (i.e., when that macro
2597 isn't defined) is OpenSSL 0.9.6c compatibility.
2599 There are also macros that enable and disable the support of old
2600 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
2601 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
2602 are defined, the default will apply: to support the old des routines.
2604 In either case, one must include openssl/des.h to get the correct
2605 definitions. Do not try to just include openssl/des_old.h, that
2608 NOTE: This is a major break of an old API into a new one. Software
2609 authors are encouraged to switch to the DES_ style functions. Some
2610 time in the future, des_old.h and the libdes compatibility functions
2611 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
2612 default), and then completely removed.
2615 *) Test for certificates which contain unsupported critical extensions.
2616 If such a certificate is found during a verify operation it is
2617 rejected by default: this behaviour can be overridden by either
2618 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
2619 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
2620 X509_supported_extension() has also been added which returns 1 if a
2621 particular extension is supported.
2624 *) Modify the behaviour of EVP cipher functions in similar way to digests
2625 to retain compatibility with existing code.
2628 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
2629 compatibility with existing code. In particular the 'ctx' parameter does
2630 not have to be to be initialized before the call to EVP_DigestInit() and
2631 it is tidied up after a call to EVP_DigestFinal(). New function
2632 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
2633 EVP_MD_CTX_copy() changed to not require the destination to be
2634 initialized valid and new function EVP_MD_CTX_copy_ex() added which
2635 requires the destination to be valid.
2637 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
2638 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
2641 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
2642 so that complete 'Handshake' protocol structures are kept in memory
2643 instead of overwriting 'msg_type' and 'length' with 'body' data.
2646 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
2647 [Massimo Santin via Richard Levitte]
2649 *) Major restructuring to the underlying ENGINE code. This includes
2650 reduction of linker bloat, separation of pure "ENGINE" manipulation
2651 (initialisation, etc) from functionality dealing with implementations
2652 of specific crypto iterfaces. This change also introduces integrated
2653 support for symmetric ciphers and digest implementations - so ENGINEs
2654 can now accelerate these by providing EVP_CIPHER and EVP_MD
2655 implementations of their own. This is detailed in crypto/engine/README
2656 as it couldn't be adequately described here. However, there are a few
2657 API changes worth noting - some RSA, DSA, DH, and RAND functions that
2658 were changed in the original introduction of ENGINE code have now
2659 reverted back - the hooking from this code to ENGINE is now a good
2660 deal more passive and at run-time, operations deal directly with
2661 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
2662 dereferencing through an ENGINE pointer any more. Also, the ENGINE
2663 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
2664 they were not being used by the framework as there is no concept of a
2665 BIGNUM_METHOD and they could not be generalised to the new
2666 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
2667 ENGINE_cpy() has been removed as it cannot be consistently defined in
2671 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
2674 *) Change mkdef.pl to sort symbols that get the same entry number,
2675 and make sure the automatically generated functions ERR_load_*
2676 become part of libeay.num as well.
2679 *) New function SSL_renegotiate_pending(). This returns true once
2680 renegotiation has been requested (either SSL_renegotiate() call
2681 or HelloRequest/ClientHello receveived from the peer) and becomes
2682 false once a handshake has been completed.
2683 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
2684 sends a HelloRequest, but does not ensure that a handshake takes
2685 place. SSL_renegotiate_pending() is useful for checking if the
2686 client has followed the request.)
2689 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
2690 By default, clients may request session resumption even during
2691 renegotiation (if session ID contexts permit); with this option,
2692 session resumption is possible only in the first handshake.
2694 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
2695 more bits available for options that should not be part of
2696 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
2699 *) Add some demos for certificate and certificate request creation.
2702 *) Make maximum certificate chain size accepted from the peer application
2703 settable (SSL*_get/set_max_cert_list()), as proposed by
2704 "Douglas E. Engert" <deengert@anl.gov>.
2707 *) Add support for shared libraries for Unixware-7
2708 (Boyd Lynn Gerber <gerberb@zenez.com>).
2711 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
2712 be done prior to destruction. Use this to unload error strings from
2713 ENGINEs that load their own error strings. NB: This adds two new API
2714 functions to "get" and "set" this destroy handler in an ENGINE.
2717 *) Alter all existing ENGINE implementations (except "openssl" and
2718 "openbsd") to dynamically instantiate their own error strings. This
2719 makes them more flexible to be built both as statically-linked ENGINEs
2720 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
2721 Also, add stub code to each that makes building them as self-contained
2722 shared-libraries easier (see README.ENGINE).
2725 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
2726 implementations into applications that are completely implemented in
2727 self-contained shared-libraries. The "dynamic" ENGINE exposes control
2728 commands that can be used to configure what shared-library to load and
2729 to control aspects of the way it is handled. Also, made an update to
2730 the README.ENGINE file that brings its information up-to-date and
2731 provides some information and instructions on the "dynamic" ENGINE
2732 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
2735 *) Make it possible to unload ranges of ERR strings with a new
2736 "ERR_unload_strings" function.
2739 *) Add a copy() function to EVP_MD.
2742 *) Make EVP_MD routines take a context pointer instead of just the
2743 md_data void pointer.
2746 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
2747 that the digest can only process a single chunk of data
2748 (typically because it is provided by a piece of
2749 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
2750 is only going to provide a single chunk of data, and hence the
2751 framework needn't accumulate the data for oneshot drivers.
2754 *) As with "ERR", make it possible to replace the underlying "ex_data"
2755 functions. This change also alters the storage and management of global
2756 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
2757 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
2758 index counters. The API functions that use this state have been changed
2759 to take a "class_index" rather than pointers to the class's local STACK
2760 and counter, and there is now an API function to dynamically create new
2761 classes. This centralisation allows us to (a) plug a lot of the
2762 thread-safety problems that existed, and (b) makes it possible to clean
2763 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
2764 such data would previously have always leaked in application code and
2765 workarounds were in place to make the memory debugging turn a blind eye
2766 to it. Application code that doesn't use this new function will still
2767 leak as before, but their memory debugging output will announce it now
2768 rather than letting it slide.
2770 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
2771 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
2772 has a return value to indicate success or failure.
2775 *) Make it possible to replace the underlying "ERR" functions such that the
2776 global state (2 LHASH tables and 2 locks) is only used by the "default"
2777 implementation. This change also adds two functions to "get" and "set"
2778 the implementation prior to it being automatically set the first time
2779 any other ERR function takes place. Ie. an application can call "get",
2780 pass the return value to a module it has just loaded, and that module
2781 can call its own "set" function using that value. This means the
2782 module's "ERR" operations will use (and modify) the error state in the
2783 application and not in its own statically linked copy of OpenSSL code.
2786 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
2787 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
2788 the operation, and provides a more encapsulated way for external code
2789 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
2790 to use these functions rather than manually incrementing the counts.
2792 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
2795 *) Add EVP test program.
2798 *) Add symmetric cipher support to ENGINE. Expect the API to change!
2801 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
2802 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
2803 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
2804 These allow a CRL to be built without having to access X509_CRL fields
2805 directly. Modify 'ca' application to use new functions.
2808 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
2809 bug workarounds. Rollback attack detection is a security feature.
2810 The problem will only arise on OpenSSL servers when TLSv1 is not
2811 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
2812 Software authors not wanting to support TLSv1 will have special reasons
2813 for their choice and can explicitly enable this option.
2814 [Bodo Moeller, Lutz Jaenicke]
2816 *) Rationalise EVP so it can be extended: don't include a union of
2817 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
2818 (similar to those existing for EVP_CIPHER_CTX).
2823 EVP_MD_CTX_init(&md); /* new function call */
2824 EVP_DigestInit(&md, EVP_sha1());
2825 EVP_DigestUpdate(&md, in, len);
2826 EVP_DigestFinal(&md, out, NULL);
2827 EVP_MD_CTX_cleanup(&md); /* new function call */
2831 *) Make DES key schedule conform to the usual scheme, as well as
2832 correcting its structure. This means that calls to DES functions
2833 now have to pass a pointer to a des_key_schedule instead of a
2834 plain des_key_schedule (which was actually always a pointer
2837 des_key_schedule ks;
2839 des_set_key_checked(..., &ks);
2840 des_ncbc_encrypt(..., &ks, ...);
2842 (Note that a later change renames 'des_...' into 'DES_...'.)
2845 *) Initial reduction of linker bloat: the use of some functions, such as
2846 PEM causes large amounts of unused functions to be linked in due to
2847 poor organisation. For example pem_all.c contains every PEM function
2848 which has a knock on effect of linking in large amounts of (unused)
2849 ASN1 code. Grouping together similar functions and splitting unrelated
2850 functions prevents this.
2853 *) Cleanup of EVP macros.
2856 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
2857 correct _ecb suffix.
2860 *) Add initial OCSP responder support to ocsp application. The
2861 revocation information is handled using the text based index
2862 use by the ca application. The responder can either handle
2863 requests generated internally, supplied in files (for example
2864 via a CGI script) or using an internal minimal server.
2867 *) Add configuration choices to get zlib compression for TLS.
2870 *) Changes to Kerberos SSL for RFC 2712 compliance:
2871 1. Implemented real KerberosWrapper, instead of just using
2872 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
2873 2. Implemented optional authenticator field of KerberosWrapper.
2875 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
2876 and authenticator structs; see crypto/krb5/.
2878 Generalized Kerberos calls to support multiple Kerberos libraries.
2879 [Vern Staats <staatsvr@asc.hpc.mil>,
2880 Jeffrey Altman <jaltman@columbia.edu>
2881 via Richard Levitte]
2883 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
2884 already does with RSA. testdsa.h now has 'priv_key/pub_key'
2885 values for each of the key sizes rather than having just
2886 parameters (and 'speed' generating keys each time).
2889 *) Speed up EVP routines.
2892 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
2893 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
2894 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
2895 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
2897 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
2898 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
2899 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
2902 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
2904 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
2907 *) Added the OS2-EMX target.
2908 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
2910 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
2911 to support NCONF routines in extension code. New function CONF_set_nconf()
2912 to allow functions which take an NCONF to also handle the old LHASH
2913 structure: this means that the old CONF compatible routines can be
2914 retained (in particular wrt extensions) without having to duplicate the
2915 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
2918 *) Enhance the general user interface with mechanisms for inner control
2919 and with possibilities to have yes/no kind of prompts.
2922 *) Change all calls to low level digest routines in the library and
2923 applications to use EVP. Add missing calls to HMAC_cleanup() and
2924 don't assume HMAC_CTX can be copied using memcpy().
2925 [Verdon Walker <VWalker@novell.com>, Steve Henson]
2927 *) Add the possibility to control engines through control names but with
2928 arbitrary arguments instead of just a string.
2929 Change the key loaders to take a UI_METHOD instead of a callback
2930 function pointer. NOTE: this breaks binary compatibility with earlier
2931 versions of OpenSSL [engine].
2932 Adapt the nCipher code for these new conditions and add a card insertion
2936 *) Enhance the general user interface with mechanisms to better support
2937 dialog box interfaces, application-defined prompts, the possibility
2938 to use defaults (for example default passwords from somewhere else)
2939 and interrupts/cancellations.
2942 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
2943 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
2946 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
2947 tidy up some unnecessarily weird code in 'sk_new()').
2948 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
2950 *) Change the key loading routines for ENGINEs to use the same kind
2951 callback (pem_password_cb) as all other routines that need this
2955 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
2956 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
2957 than this minimum value is recommended.
2960 *) New random seeder for OpenVMS, using the system process statistics
2961 that are easily reachable.
2964 *) Windows apparently can't transparently handle global
2965 variables defined in DLLs. Initialisations such as:
2967 const ASN1_ITEM *it = &ASN1_INTEGER_it;
2969 wont compile. This is used by the any applications that need to
2970 declare their own ASN1 modules. This was fixed by adding the option
2971 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
2972 needed for static libraries under Win32.
2975 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
2976 setting of purpose and trust fields. New X509_STORE trust and
2977 purpose functions and tidy up setting in other SSL functions.
2980 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
2981 structure. These are inherited by X509_STORE_CTX when it is
2982 initialised. This allows various defaults to be set in the
2983 X509_STORE structure (such as flags for CRL checking and custom
2984 purpose or trust settings) for functions which only use X509_STORE_CTX
2985 internally such as S/MIME.
2987 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
2988 trust settings if they are not set in X509_STORE. This allows X509_STORE
2989 purposes and trust (in S/MIME for example) to override any set by default.
2991 Add command line options for CRL checking to smime, s_client and s_server
2995 *) Initial CRL based revocation checking. If the CRL checking flag(s)
2996 are set then the CRL is looked up in the X509_STORE structure and
2997 its validity and signature checked, then if the certificate is found
2998 in the CRL the verify fails with a revoked error.
3000 Various new CRL related callbacks added to X509_STORE_CTX structure.
3002 Command line options added to 'verify' application to support this.
3004 This needs some additional work, such as being able to handle multiple
3005 CRLs with different times, extension based lookup (rather than just
3006 by subject name) and ultimately more complete V2 CRL extension
3010 *) Add a general user interface API (crypto/ui/). This is designed
3011 to replace things like des_read_password and friends (backward
3012 compatibility functions using this new API are provided).
3013 The purpose is to remove prompting functions from the DES code
3014 section as well as provide for prompting through dialog boxes in
3015 a window system and the like.
3018 *) Add "ex_data" support to ENGINE so implementations can add state at a
3019 per-structure level rather than having to store it globally.
3022 *) Make it possible for ENGINE structures to be copied when retrieved by
3023 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3024 This causes the "original" ENGINE structure to act like a template,
3025 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3026 operational state can be localised to each ENGINE structure, despite the
3027 fact they all share the same "methods". New ENGINE structures returned in
3028 this case have no functional references and the return value is the single
3029 structural reference. This matches the single structural reference returned
3030 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3034 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3035 needs to match any other type at all we need to manually clear the
3039 *) Changes to the "openssl engine" utility to include;
3040 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3041 about an ENGINE's available control commands.
3042 - executing control commands from command line arguments using the
3043 '-pre' and '-post' switches. '-post' is only used if '-t' is
3044 specified and the ENGINE is successfully initialised. The syntax for
3045 the individual commands are colon-separated, for example;
3046 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3049 *) New dynamic control command support for ENGINEs. ENGINEs can now
3050 declare their own commands (numbers), names (strings), descriptions,
3051 and input types for run-time discovery by calling applications. A
3052 subset of these commands are implicitly classed as "executable"
3053 depending on their input type, and only these can be invoked through
3054 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3055 can be based on user input, config files, etc). The distinction is
3056 that "executable" commands cannot return anything other than a boolean
3057 result and can only support numeric or string input, whereas some
3058 discoverable commands may only be for direct use through
3059 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3060 pointers, or other custom uses. The "executable" commands are to
3061 support parameterisations of ENGINE behaviour that can be
3062 unambiguously defined by ENGINEs and used consistently across any
3063 OpenSSL-based application. Commands have been added to all the
3064 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3065 control over shared-library paths without source code alterations.
3068 *) Changed all ENGINE implementations to dynamically allocate their
3069 ENGINEs rather than declaring them statically. Apart from this being
3070 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3071 this also allows the implementations to compile without using the
3072 internal engine_int.h header.
3075 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3076 'const' value. Any code that should be able to modify a RAND_METHOD
3077 should already have non-const pointers to it (ie. they should only
3078 modify their own ones).
3081 *) Made a variety of little tweaks to the ENGINE code.
3082 - "atalla" and "ubsec" string definitions were moved from header files
3083 to C code. "nuron" string definitions were placed in variables
3084 rather than hard-coded - allowing parameterisation of these values
3085 later on via ctrl() commands.
3086 - Removed unused "#if 0"'d code.
3087 - Fixed engine list iteration code so it uses ENGINE_free() to release
3088 structural references.
3089 - Constified the RAND_METHOD element of ENGINE structures.
3090 - Constified various get/set functions as appropriate and added
3091 missing functions (including a catch-all ENGINE_cpy that duplicates
3092 all ENGINE values onto a new ENGINE except reference counts/state).
3093 - Removed NULL parameter checks in get/set functions. Setting a method
3094 or function to NULL is a way of cancelling out a previously set
3095 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3096 and doesn't justify the extra error symbols and code.
3097 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3098 flags from engine_int.h to engine.h.
3099 - Changed prototypes for ENGINE handler functions (init(), finish(),
3100 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3103 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3104 to the algorithm using long division. The binary algorithm can be
3105 used only if the modulus is odd. On 32-bit systems, it is faster
3106 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3107 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3108 up to 450 bits. In 64-bit environments, the binary algorithm
3109 appears to be advantageous for much longer moduli; here we use it
3110 for moduli up to 2048 bits.
3113 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3114 could not support the combine flag in choice fields.
3117 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3118 extensions from a certificate request to the certificate.
3121 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3122 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3123 file: this allows the display of the certificate about to be
3124 signed to be customised, to allow certain fields to be included
3125 or excluded and extension details. The old system didn't display
3126 multicharacter strings properly, omitted fields not in the policy
3127 and couldn't display additional details such as extensions.
3130 *) Function EC_POINTs_mul for multiple scalar multiplication
3131 of an arbitrary number of elliptic curve points
3132 \sum scalars[i]*points[i],
3133 optionally including the generator defined for the EC_GROUP:
3134 scalar*generator + \sum scalars[i]*points[i].
3136 EC_POINT_mul is a simple wrapper function for the typical case
3137 that the point list has just one item (besides the optional
3141 *) First EC_METHODs for curves over GF(p):
3143 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3144 operations and provides various method functions that can also
3145 operate with faster implementations of modular arithmetic.
3147 EC_GFp_mont_method() reuses most functions that are part of
3148 EC_GFp_simple_method, but uses Montgomery arithmetic.
3150 [Bodo Moeller; point addition and point doubling
3151 implementation directly derived from source code provided by
3152 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3154 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3155 crypto/ec/ec_lib.c):
3157 Curves are EC_GROUP objects (with an optional group generator)
3158 based on EC_METHODs that are built into the library.
3160 Points are EC_POINT objects based on EC_GROUP objects.
3162 Most of the framework would be able to handle curves over arbitrary
3163 finite fields, but as there are no obvious types for fields other
3164 than GF(p), some functions are limited to that for now.
3167 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3168 that the file contains a complete HTTP response.
3171 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3172 change the def and num file printf format specifier from "%-40sXXX"
3173 to "%-39s XXX". The latter will always guarantee a space after the
3174 field while the former will cause them to run together if the field
3175 is 40 of more characters long.
3178 *) Constify the cipher and digest 'method' functions and structures
3179 and modify related functions to take constant EVP_MD and EVP_CIPHER
3183 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3184 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3187 *) Modify EVP_Digest*() routines so they now return values. Although the
3188 internal software routines can never fail additional hardware versions
3192 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3194 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3195 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3198 ERR_R_NESTED_ASN1_ERROR
3200 ERR_R_MISSING_ASN1_EOS
3201 were 4 .. 9, conflicting with
3202 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3204 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3205 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3207 Add new error code 'ERR_R_INTERNAL_ERROR'.
3210 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3214 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3215 sets the subject name for a new request or supersedes the
3216 subject name in a given request. Formats that can be parsed are
3217 'CN=Some Name, OU=myOU, C=IT'
3219 'CN=Some Name/OU=myOU/C=IT'.
3221 Add options '-batch' and '-verbose' to 'openssl req'.
3222 [Massimiliano Pala <madwolf@hackmasters.net>]
3224 *) Introduce the possibility to access global variables through
3225 functions on platform were that's the best way to handle exporting
3226 global variables in shared libraries. To enable this functionality,
3227 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3228 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3229 is normally done by Configure or something similar).
3231 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3232 in the source file (foo.c) like this:
3234 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3235 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3237 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3238 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3240 OPENSSL_DECLARE_GLOBAL(int,foo);
3241 #define foo OPENSSL_GLOBAL_REF(foo)
3242 OPENSSL_DECLARE_GLOBAL(double,bar);
3243 #define bar OPENSSL_GLOBAL_REF(bar)
3245 The #defines are very important, and therefore so is including the
3246 header file everywhere where the defined globals are used.
3248 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3249 of ASN.1 items, but that structure is a bit different.
3251 The largest change is in util/mkdef.pl which has been enhanced with
3252 better and easier to understand logic to choose which symbols should
3253 go into the Windows .def files as well as a number of fixes and code
3254 cleanup (among others, algorithm keywords are now sorted
3255 lexicographically to avoid constant rewrites).
3258 *) In BN_div() keep a copy of the sign of 'num' before writing the
3259 result to 'rm' because if rm==num the value will be overwritten
3260 and produce the wrong result if 'num' is negative: this caused
3261 problems with BN_mod() and BN_nnmod().
3264 *) Function OCSP_request_verify(). This checks the signature on an
3265 OCSP request and verifies the signer certificate. The signer
3266 certificate is just checked for a generic purpose and OCSP request
3270 *) Add OCSP_check_validity() function to check the validity of OCSP
3271 responses. OCSP responses are prepared in real time and may only
3272 be a few seconds old. Simply checking that the current time lies
3273 between thisUpdate and nextUpdate max reject otherwise valid responses
3274 caused by either OCSP responder or client clock inaccuracy. Instead
3275 we allow thisUpdate and nextUpdate to fall within a certain period of
3276 the current time. The age of the response can also optionally be
3277 checked. Two new options -validity_period and -status_age added to
3281 *) If signature or public key algorithm is unrecognized print out its
3282 OID rather that just UNKNOWN.
3285 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3286 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3287 ID to be generated from the issuer certificate alone which can then be
3288 passed to OCSP_id_issuer_cmp().
3291 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3292 ASN1 modules to export functions returning ASN1_ITEM pointers
3293 instead of the ASN1_ITEM structures themselves. This adds several
3294 new macros which allow the underlying ASN1 function/structure to
3295 be accessed transparently. As a result code should not use ASN1_ITEM
3296 references directly (such as &X509_it) but instead use the relevant
3297 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3298 use of the new ASN1 code on platforms where exporting structures
3299 is problematical (for example in shared libraries) but exporting
3300 functions returning pointers to structures is not.
3303 *) Add support for overriding the generation of SSL/TLS session IDs.
3304 These callbacks can be registered either in an SSL_CTX or per SSL.
3305 The purpose of this is to allow applications to control, if they wish,
3306 the arbitrary values chosen for use as session IDs, particularly as it
3307 can be useful for session caching in multiple-server environments. A
3308 command-line switch for testing this (and any client code that wishes
3309 to use such a feature) has been added to "s_server".
3310 [Geoff Thorpe, Lutz Jaenicke]
3312 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3313 of the form '#if defined(...) || defined(...) || ...' and
3314 '#if !defined(...) && !defined(...) && ...'. This also avoids
3315 the growing number of special cases it was previously handling.
3318 *) Make all configuration macros available for application by making
3319 sure they are available in opensslconf.h, by giving them names starting
3320 with "OPENSSL_" to avoid conflicts with other packages and by making
3321 sure e_os2.h will cover all platform-specific cases together with
3323 Additionally, it is now possible to define configuration/platform-
3324 specific names (called "system identities"). In the C code, these
3325 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3326 macro with the name beginning with "OPENSSL_SYS_", which is determined
3327 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3331 *) New option -set_serial to 'req' and 'x509' this allows the serial
3332 number to use to be specified on the command line. Previously self
3333 signed certificates were hard coded with serial number 0 and the
3334 CA options of 'x509' had to use a serial number in a file which was
3338 *) New options to 'ca' utility to support V2 CRL entry extensions.
3339 Currently CRL reason, invalidity date and hold instruction are
3340 supported. Add new CRL extensions to V3 code and some new objects.
3343 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3344 disable standard block padding (aka PKCS#5 padding) in the EVP
3345 API, which was previously mandatory. This means that the data is
3346 not padded in any way and so the total length much be a multiple
3347 of the block size, otherwise an error occurs.
3350 *) Initial (incomplete) OCSP SSL support.
3353 *) New function OCSP_parse_url(). This splits up a URL into its host,
3354 port and path components: primarily to parse OCSP URLs. New -url
3355 option to ocsp utility.
3358 *) New nonce behavior. The return value of OCSP_check_nonce() now
3359 reflects the various checks performed. Applications can decide
3360 whether to tolerate certain situations such as an absent nonce
3361 in a response when one was present in a request: the ocsp application
3362 just prints out a warning. New function OCSP_add1_basic_nonce()
3363 this is to allow responders to include a nonce in a response even if
3364 the request is nonce-less.
3367 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3368 skipped when using openssl x509 multiple times on a single input file,
3369 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3372 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3373 set string type: to handle setting ASN1_TIME structures. Fix ca
3374 utility to correctly initialize revocation date of CRLs.
3377 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3378 the clients preferred ciphersuites and rather use its own preferences.
3379 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3380 Internet Explorer by ensuring unchanged hash method during stepup.
3381 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3384 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3385 to aes and add a new 'exist' option to print out symbols that don't
3389 *) Additional options to ocsp utility to allow flags to be set and
3390 additional certificates supplied.
3393 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3394 OCSP client a number of certificate to only verify the response
3398 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3399 handle the new API. Currently only ECB, CBC modes supported. Add new
3402 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3403 Encryption Standard (AES) Ciphersuites for Transport Layer
3404 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3405 not enabled by default and were not part of the "ALL" ciphersuite
3406 alias because they were not yet official; they could be
3407 explicitly requested by specifying the "AESdraft" ciphersuite
3408 group alias. In the final release of OpenSSL 0.9.7, the group
3409 alias is called "AES" and is part of "ALL".)
3410 [Ben Laurie, Steve Henson, Bodo Moeller]
3412 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3413 request to response.
3416 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3417 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3418 extract information from a certificate request. OCSP_response_create()
3419 creates a response and optionally adds a basic response structure.
3420 OCSP_basic_add1_status() adds a complete single response to a basic
3421 response and returns the OCSP_SINGLERESP structure just added (to allow
3422 extensions to be included for example). OCSP_basic_add1_cert() adds a
3423 certificate to a basic response and OCSP_basic_sign() signs a basic
3424 response with various flags. New helper functions ASN1_TIME_check()
3425 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3426 (converts ASN1_TIME to GeneralizedTime).
3429 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3430 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3431 structure from a certificate. X509_pubkey_digest() digests the public_key
3432 contents: this is used in various key identifiers.
3435 *) Make sk_sort() tolerate a NULL argument.
3436 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3438 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3439 passed by the function are trusted implicitly. If any of them signed the
3440 response then it is assumed to be valid and is not verified.
3443 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3444 to data. This was previously part of the PKCS7 ASN1 code. This
3445 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3446 [Steve Henson, reported by Kenneth R. Robinette
3447 <support@securenetterm.com>]
3449 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3450 routines: without these tracing memory leaks is very painful.
3451 Fix leaks in PKCS12 and PKCS7 routines.
3454 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3455 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3456 effectively meant GeneralizedTime would never be used. Now it
3457 is initialised to -1 but X509_time_adj() now has to check the value
3458 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3459 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3460 [Steve Henson, reported by Kenneth R. Robinette
3461 <support@securenetterm.com>]
3463 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3464 result in a zero length in the ASN1_INTEGER structure which was
3465 not consistent with the structure when d2i_ASN1_INTEGER() was used
3466 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3467 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3468 where it did not print out a minus for negative ASN1_INTEGER.
3471 *) Add summary printout to ocsp utility. The various functions which
3472 convert status values to strings have been renamed to:
3473 OCSP_response_status_str(), OCSP_cert_status_str() and
3474 OCSP_crl_reason_str() and are no longer static. New options
3475 to verify nonce values and to disable verification. OCSP response
3476 printout format cleaned up.
3479 *) Add additional OCSP certificate checks. These are those specified
3480 in RFC2560. This consists of two separate checks: the CA of the
3481 certificate being checked must either be the OCSP signer certificate
3482 or the issuer of the OCSP signer certificate. In the latter case the
3483 OCSP signer certificate must contain the OCSP signing extended key
3484 usage. This check is performed by attempting to match the OCSP
3485 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3486 in the OCSP_CERTID structures of the response.
3489 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3490 and related routines. This uses the standard OpenSSL certificate
3491 verify routines to perform initial checks (just CA validity) and
3492 to obtain the certificate chain. Then additional checks will be
3493 performed on the chain. Currently the root CA is checked to see
3494 if it is explicitly trusted for OCSP signing. This is used to set
3495 a root CA as a global signing root: that is any certificate that
3496 chains to that CA is an acceptable OCSP signing certificate.
3499 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
3500 extensions from a separate configuration file.
3501 As when reading extensions from the main configuration file,
3502 the '-extensions ...' option may be used for specifying the
3504 [Massimiliano Pala <madwolf@comune.modena.it>]
3506 *) New OCSP utility. Allows OCSP requests to be generated or
3507 read. The request can be sent to a responder and the output
3508 parsed, outputed or printed in text form. Not complete yet:
3509 still needs to check the OCSP response validity.
3512 *) New subcommands for 'openssl ca':
3513 'openssl ca -status <serial>' prints the status of the cert with
3514 the given serial number (according to the index file).
3515 'openssl ca -updatedb' updates the expiry status of certificates
3517 [Massimiliano Pala <madwolf@comune.modena.it>]
3519 *) New '-newreq-nodes' command option to CA.pl. This is like
3520 '-newreq', but calls 'openssl req' with the '-nodes' option
3521 so that the resulting key is not encrypted.
3522 [Damien Miller <djm@mindrot.org>]
3524 *) New configuration for the GNU Hurd.
3525 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
3527 *) Initial code to implement OCSP basic response verify. This
3528 is currently incomplete. Currently just finds the signer's
3529 certificate and verifies the signature on the response.
3532 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
3533 value of OPENSSLDIR. This is available via the new '-d' option
3534 to 'openssl version', and is also included in 'openssl version -a'.
3537 *) Allowing defining memory allocation callbacks that will be given
3538 file name and line number information in additional arguments
3539 (a const char* and an int). The basic functionality remains, as
3540 well as the original possibility to just replace malloc(),
3541 realloc() and free() by functions that do not know about these
3542 additional arguments. To register and find out the current
3543 settings for extended allocation functions, the following
3544 functions are provided:
3546 CRYPTO_set_mem_ex_functions
3547 CRYPTO_set_locked_mem_ex_functions
3548 CRYPTO_get_mem_ex_functions
3549 CRYPTO_get_locked_mem_ex_functions
3551 These work the same way as CRYPTO_set_mem_functions and friends.
3552 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
3553 extended allocation function is enabled.
3554 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
3555 a conventional allocation function is enabled.
3556 [Richard Levitte, Bodo Moeller]
3558 *) Finish off removing the remaining LHASH function pointer casts.
3559 There should no longer be any prototype-casting required when using
3560 the LHASH abstraction, and any casts that remain are "bugs". See
3561 the callback types and macros at the head of lhash.h for details
3562 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
3565 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
3566 If /dev/[u]random devices are not available or do not return enough
3567 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
3569 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
3570 /etc/entropy will be queried once each in this sequence, quering stops
3571 when enough entropy was collected without querying more sockets.
3574 *) Change the Unix RAND_poll() variant to be able to poll several
3575 random devices, as specified by DEVRANDOM, until a sufficient amount
3576 of data has been collected. We spend at most 10 ms on each file
3577 (select timeout) and read in non-blocking mode. DEVRANDOM now
3578 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
3579 (previously it was just the string "/dev/urandom"), so on typical
3580 platforms the 10 ms delay will never occur.
3581 Also separate out the Unix variant to its own file, rand_unix.c.
3582 For VMS, there's a currently-empty rand_vms.c.
3585 *) Move OCSP client related routines to ocsp_cl.c. These
3586 provide utility functions which an application needing
3587 to issue a request to an OCSP responder and analyse the
3588 response will typically need: as opposed to those which an
3589 OCSP responder itself would need which will be added later.
3591 OCSP_request_sign() signs an OCSP request with an API similar
3592 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
3593 response. OCSP_response_get1_basic() extracts basic response
3594 from response. OCSP_resp_find_status(): finds and extracts status
3595 information from an OCSP_CERTID structure (which will be created
3596 when the request structure is built). These are built from lower
3597 level functions which work on OCSP_SINGLERESP structures but
3598 wont normally be used unless the application wishes to examine
3599 extensions in the OCSP response for example.
3601 Replace nonce routines with a pair of functions.
3602 OCSP_request_add1_nonce() adds a nonce value and optionally
3603 generates a random value. OCSP_check_nonce() checks the
3604 validity of the nonce in an OCSP response.
3607 *) Change function OCSP_request_add() to OCSP_request_add0_id().
3608 This doesn't copy the supplied OCSP_CERTID and avoids the
3609 need to free up the newly created id. Change return type
3610 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
3611 This can then be used to add extensions to the request.
3612 Deleted OCSP_request_new(), since most of its functionality
3613 is now in OCSP_REQUEST_new() (and the case insensitive name
3614 clash) apart from the ability to set the request name which
3615 will be added elsewhere.
3618 *) Update OCSP API. Remove obsolete extensions argument from
3619 various functions. Extensions are now handled using the new
3620 OCSP extension code. New simple OCSP HTTP function which
3621 can be used to send requests and parse the response.
3624 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
3625 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
3626 uses the special reorder version of SET OF to sort the attributes
3627 and reorder them to match the encoded order. This resolves a long
3628 standing problem: a verify on a PKCS7 structure just after signing
3629 it used to fail because the attribute order did not match the
3630 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
3631 it uses the received order. This is necessary to tolerate some broken
3632 software that does not order SET OF. This is handled by encoding
3633 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
3634 to produce the required SET OF.
3637 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
3638 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
3639 files to get correct declarations of the ASN.1 item variables.
3642 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
3643 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
3644 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
3645 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
3646 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
3647 ASN1_ITEM and no wrapper functions.
3650 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
3651 replace the old function pointer based I/O routines. Change most of
3652 the *_d2i_bio() and *_d2i_fp() functions to use these.
3655 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
3656 lines, recognice more "algorithms" that can be deselected, and make
3657 it complain about algorithm deselection that isn't recognised.
3660 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
3661 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
3662 to use new functions. Add NO_ASN1_OLD which can be set to remove
3663 some old style ASN1 functions: this can be used to determine if old
3664 code will still work when these eventually go away.
3667 *) New extension functions for OCSP structures, these follow the
3668 same conventions as certificates and CRLs.
3671 *) New function X509V3_add1_i2d(). This automatically encodes and
3672 adds an extension. Its behaviour can be customised with various
3673 flags to append, replace or delete. Various wrappers added for
3674 certifcates and CRLs.
3677 *) Fix to avoid calling the underlying ASN1 print routine when
3678 an extension cannot be parsed. Correct a typo in the
3679 OCSP_SERVICELOC extension. Tidy up print OCSP format.
3682 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
3683 entries for variables.
3686 *) Add functionality to apps/openssl.c for detecting locking
3687 problems: As the program is single-threaded, all we have
3688 to do is register a locking callback using an array for
3689 storing which locks are currently held by the program.
3692 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
3693 SSL_get_ex_data_X509_STORE_idx(), which is used in
3694 ssl_verify_cert_chain() and thus can be called at any time
3695 during TLS/SSL handshakes so that thread-safety is essential.
3696 Unfortunately, the ex_data design is not at all suited
3697 for multi-threaded use, so it probably should be abolished.
3700 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
3701 [Broadcom, tweaked and integrated by Geoff Thorpe]
3703 *) Move common extension printing code to new function
3704 X509V3_print_extensions(). Reorganise OCSP print routines and
3705 implement some needed OCSP ASN1 functions. Add OCSP extensions.
3708 *) New function X509_signature_print() to remove duplication in some
3712 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
3713 set (this was treated exactly the same as SET OF previously). This
3714 is used to reorder the STACK representing the structure to match the
3715 encoding. This will be used to get round a problem where a PKCS7
3716 structure which was signed could not be verified because the STACK
3717 order did not reflect the encoded order.
3720 *) Reimplement the OCSP ASN1 module using the new code.
3723 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
3724 for its ASN1 operations. The old style function pointers still exist
3725 for now but they will eventually go away.
3728 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
3729 completely replaces the old ASN1 functionality with a table driven
3730 encoder and decoder which interprets an ASN1_ITEM structure describing
3731 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
3732 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
3733 has also been converted to the new form.
3736 *) Change BN_mod_exp_recp so that negative moduli are tolerated
3737 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
3738 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
3739 for negative moduli.
3742 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
3743 of not touching the result's sign bit.
3746 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
3750 *) Changed the LHASH code to use prototypes for callbacks, and created
3751 macros to declare and implement thin (optionally static) functions
3752 that provide type-safety and avoid function pointer casting for the
3753 type-specific callbacks.
3756 *) Added Kerberos Cipher Suites to be used with TLS, as written in
3758 [Veers Staats <staatsvr@asc.hpc.mil>,
3759 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
3761 *) Reformat the FAQ so the different questions and answers can be divided
3762 in sections depending on the subject.
3765 *) Have the zlib compression code load ZLIB.DLL dynamically under
3769 *) New function BN_mod_sqrt for computing square roots modulo a prime
3770 (using the probabilistic Tonelli-Shanks algorithm unless
3771 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
3772 be handled deterministically).
3773 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3775 *) Make BN_mod_inverse faster by explicitly handling small quotients
3776 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
3777 512 bits], about 30% for larger ones [1024 or 2048 bits].)
3780 *) New function BN_kronecker.
3783 *) Fix BN_gcd so that it works on negative inputs; the result is
3784 positive unless both parameters are zero.
3785 Previously something reasonably close to an infinite loop was
3786 possible because numbers could be growing instead of shrinking
3787 in the implementation of Euclid's algorithm.
3790 *) Fix BN_is_word() and BN_is_one() macros to take into account the
3791 sign of the number in question.
3793 Fix BN_is_word(a,w) to work correctly for w == 0.
3795 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
3796 because its test if the absolute value of 'a' equals 'w'.
3797 Note that BN_abs_is_word does *not* handle w == 0 reliably;
3798 it exists mostly for use in the implementations of BN_is_zero(),
3799 BN_is_one(), and BN_is_word().
3802 *) New function BN_swap.
3805 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
3806 the exponentiation functions are more likely to produce reasonable
3807 results on negative inputs.
3810 *) Change BN_mod_mul so that the result is always non-negative.
3811 Previously, it could be negative if one of the factors was negative;
3812 I don't think anyone really wanted that behaviour.
3815 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
3816 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
3817 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
3818 and add new functions:
3827 BN_mod_lshift1_quick
3831 These functions always generate non-negative results.
3833 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
3834 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
3836 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
3837 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
3838 be reduced modulo m.
3839 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
3842 The following entry accidentily appeared in the CHANGES file
3843 distributed with OpenSSL 0.9.7. The modifications described in
3844 it do *not* apply to OpenSSL 0.9.7.
3846 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
3847 was actually never needed) and in BN_mul(). The removal in BN_mul()
3848 required a small change in bn_mul_part_recursive() and the addition
3849 of the functions bn_cmp_part_words(), bn_sub_part_words() and
3850 bn_add_part_words(), which do the same thing as bn_cmp_words(),
3851 bn_sub_words() and bn_add_words() except they take arrays with
3856 *) In 'openssl passwd', verify passwords read from the terminal
3857 unless the '-salt' option is used (which usually means that
3858 verification would just waste user's time since the resulting
3859 hash is going to be compared with some given password hash)
3860 or the new '-noverify' option is used.
3862 This is an incompatible change, but it does not affect
3863 non-interactive use of 'openssl passwd' (passwords on the command
3864 line, '-stdin' option, '-in ...' option) and thus should not
3868 *) Remove all references to RSAref, since there's no more need for it.
3871 *) Make DSO load along a path given through an environment variable
3872 (SHLIB_PATH) with shl_load().
3875 *) Constify the ENGINE code as a result of BIGNUM constification.
3876 Also constify the RSA code and most things related to it. In a
3877 few places, most notable in the depth of the ASN.1 code, ugly
3878 casts back to non-const were required (to be solved at a later
3882 *) Make it so the openssl application has all engines loaded by default.
3885 *) Constify the BIGNUM routines a little more.
3888 *) Add the following functions:
3890 ENGINE_load_cswift()
3892 ENGINE_load_atalla()
3894 ENGINE_load_builtin_engines()
3896 That way, an application can itself choose if external engines that
3897 are built-in in OpenSSL shall ever be used or not. The benefit is
3898 that applications won't have to be linked with libdl or other dso
3899 libraries unless it's really needed.
3901 Changed 'openssl engine' to load all engines on demand.
3902 Changed the engine header files to avoid the duplication of some
3903 declarations (they differed!).
3906 *) 'openssl engine' can now list capabilities.
3909 *) Better error reporting in 'openssl engine'.
3912 *) Never call load_dh_param(NULL) in s_server.
3915 *) Add engine application. It can currently list engines by name and
3916 identity, and test if they are actually available.
3919 *) Improve RPM specification file by forcing symbolic linking and making
3920 sure the installed documentation is also owned by root.root.
3921 [Damien Miller <djm@mindrot.org>]
3923 *) Give the OpenSSL applications more possibilities to make use of
3924 keys (public as well as private) handled by engines.
3927 *) Add OCSP code that comes from CertCo.
3930 *) Add VMS support for the Rijndael code.
3933 *) Added untested support for Nuron crypto accelerator.
3936 *) Add support for external cryptographic devices. This code was
3937 previously distributed separately as the "engine" branch.
3938 [Geoff Thorpe, Richard Levitte]
3940 *) Rework the filename-translation in the DSO code. It is now possible to
3941 have far greater control over how a "name" is turned into a filename
3942 depending on the operating environment and any oddities about the
3943 different shared library filenames on each system.
3946 *) Support threads on FreeBSD-elf in Configure.
3949 *) Fix for SHA1 assembly problem with MASM: it produces
3950 warnings about corrupt line number information when assembling
3951 with debugging information. This is caused by the overlapping
3953 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
3956 NCONF_get_number() has no error checking at all. As a replacement,
3957 NCONF_get_number_e() is defined (_e for "error checking") and is
3958 promoted strongly. The old NCONF_get_number is kept around for
3959 binary backward compatibility.
3960 Make it possible for methods to load from something other than a BIO,
3961 by providing a function pointer that is given a name instead of a BIO.
3962 For example, this could be used to load configuration data from an
3966 *) Fix for non blocking accept BIOs. Added new I/O special reason
3967 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
3968 with non blocking I/O was not possible because no retry code was
3969 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
3973 *) Added the beginnings of Rijndael support.
3976 *) Fix for bug in DirectoryString mask setting. Add support for
3977 X509_NAME_print_ex() in 'req' and X509_print_ex() function
3978 to allow certificate printing to more controllable, additional
3979 'certopt' option to 'x509' to allow new printing options to be
3983 *) Clean old EAY MD5 hack from e_os.h.
3986 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
3988 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3989 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3990 [Joe Orton, Steve Henson]
3992 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
3994 *) Fix additional bug revealed by the NISCC test suite:
3996 Stop bug triggering large recursion when presented with
3997 certain ASN.1 tags (CVE-2003-0851)
4000 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
4002 *) Fix various bugs revealed by running the NISCC test suite:
4004 Stop out of bounds reads in the ASN1 code when presented with
4005 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4007 If verify callback ignores invalid public key errors don't try to check
4008 certificate signature with the NULL public key.
4012 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4013 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4017 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4018 extra data after the compression methods not only for TLS 1.0
4019 but also for SSL 3.0 (as required by the specification).
4020 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4022 *) Change X509_certificate_type() to mark the key as exported/exportable
4023 when it's 512 *bits* long, not 512 bytes.
4026 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4028 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4029 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4030 a protocol version number mismatch like a decryption error
4031 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4034 *) Turn on RSA blinding by default in the default implementation
4035 to avoid a timing attack. Applications that don't want it can call
4036 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4037 They would be ill-advised to do so in most cases.
4038 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4040 *) Change RSA blinding code so that it works when the PRNG is not
4041 seeded (in this case, the secret RSA exponent is abused as
4042 an unpredictable seed -- if it is not unpredictable, there
4043 is no point in blinding anyway). Make RSA blinding thread-safe
4044 by remembering the creator's thread ID in rsa->blinding and
4045 having all other threads use local one-time blinding factors
4046 (this requires more computation than sharing rsa->blinding, but
4047 avoids excessive locking; and if an RSA object is not shared
4048 between threads, blinding will still be very fast).
4051 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4053 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4054 via timing by performing a MAC computation even if incorrrect
4055 block cipher padding has been found. This is a countermeasure
4056 against active attacks where the attacker has to distinguish
4057 between bad padding and a MAC verification error. (CVE-2003-0078)
4059 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4060 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4061 Martin Vuagnoux (EPFL, Ilion)]
4063 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4065 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4066 memory from it's contents. This is done with a counter that will
4067 place alternating values in each byte. This can be used to solve
4068 two issues: 1) the removal of calls to memset() by highly optimizing
4069 compilers, and 2) cleansing with other values than 0, since those can
4070 be read through on certain media, for example a swap space on disk.
4073 *) Bugfix: client side session caching did not work with external caching,
4074 because the session->cipher setting was not restored when reloading
4075 from the external cache. This problem was masked, when
4076 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4077 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4080 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4081 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4082 [Zeev Lieber <zeev-l@yahoo.com>]
4084 *) Undo an undocumented change introduced in 0.9.6e which caused
4085 repeated calls to OpenSSL_add_all_ciphers() and
4086 OpenSSL_add_all_digests() to be ignored, even after calling
4090 *) Change the default configuration reader to deal with last line not
4091 being properly terminated.
4094 *) Change X509_NAME_cmp() so it applies the special rules on handling
4095 DN values that are of type PrintableString, as well as RDNs of type
4096 emailAddress where the value has the type ia5String.
4097 [stefank@valicert.com via Richard Levitte]
4099 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4100 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4101 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4102 the bitwise-OR of the two for use by the majority of applications
4103 wanting this behaviour, and update the docs. The documented
4104 behaviour and actual behaviour were inconsistent and had been
4105 changing anyway, so this is more a bug-fix than a behavioural
4107 [Geoff Thorpe, diagnosed by Nadav Har'El]
4109 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4110 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4113 *) Fix initialization code race conditions in
4114 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4115 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4116 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4117 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4118 ssl2_get_cipher_by_char(),
4119 ssl3_get_cipher_by_char().
4120 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4122 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4123 the cached sessions are flushed, as the remove_cb() might use ex_data
4124 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4125 (see [openssl.org #212]).
4126 [Geoff Thorpe, Lutz Jaenicke]
4128 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4129 length, instead of the encoding length to d2i_ASN1_OBJECT.
4132 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4134 *) [In 0.9.6g-engine release:]
4135 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4136 [Lynn Gazis <lgazis@rainbow.com>]
4138 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4140 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4141 and get fix the header length calculation.
4142 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4143 Alon Kantor <alonk@checkpoint.com> (and others),
4146 *) Use proper error handling instead of 'assertions' in buffer
4147 overflow checks added in 0.9.6e. This prevents DoS (the
4148 assertions could call abort()).
4149 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4151 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4153 *) Add various sanity checks to asn1_get_length() to reject
4154 the ASN1 length bytes if they exceed sizeof(long), will appear
4155 negative or the content length exceeds the length of the
4157 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4159 *) Fix cipher selection routines: ciphers without encryption had no flags
4160 for the cipher strength set and where therefore not handled correctly
4161 by the selection routines (PR #130).
4164 *) Fix EVP_dsa_sha macro.
4168 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4169 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4170 that was added in OpenSSL 0.9.6d.
4172 As the countermeasure turned out to be incompatible with some
4173 broken SSL implementations, the new option is part of SSL_OP_ALL.
4174 SSL_OP_ALL is usually employed when compatibility with weird SSL
4175 implementations is desired (e.g. '-bugs' option to 's_client' and
4176 's_server'), so the new option is automatically set in many
4180 *) Changes in security patch:
4182 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4183 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4184 Air Force Materiel Command, USAF, under agreement number
4187 *) Add various sanity checks to asn1_get_length() to reject
4188 the ASN1 length bytes if they exceed sizeof(long), will appear
4189 negative or the content length exceeds the length of the
4190 supplied buffer. (CVE-2002-0659)
4191 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4193 *) Assertions for various potential buffer overflows, not known to
4195 [Ben Laurie (CHATS)]
4197 *) Various temporary buffers to hold ASCII versions of integers were
4198 too small for 64 bit platforms. (CVE-2002-0655)
4199 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4201 *) Remote buffer overflow in SSL3 protocol - an attacker could
4202 supply an oversized session ID to a client. (CVE-2002-0656)
4203 [Ben Laurie (CHATS)]
4205 *) Remote buffer overflow in SSL2 protocol - an attacker could
4206 supply an oversized client master key. (CVE-2002-0656)
4207 [Ben Laurie (CHATS)]
4209 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4211 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4212 encoded as NULL) with id-dsa-with-sha1.
4213 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4215 *) Check various X509_...() return values in apps/req.c.
4216 [Nils Larsch <nla@trustcenter.de>]
4218 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4219 an end-of-file condition would erronously be flagged, when the CRLF
4220 was just at the end of a processed block. The bug was discovered when
4221 processing data through a buffering memory BIO handing the data to a
4222 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4223 <ptsekov@syntrex.com> and Nedelcho Stanev.
4226 *) Implement a countermeasure against a vulnerability recently found
4227 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4228 before application data chunks to avoid the use of known IVs
4229 with data potentially chosen by the attacker.
4232 *) Fix length checks in ssl3_get_client_hello().
4235 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4236 to prevent ssl3_read_internal() from incorrectly assuming that
4237 ssl3_read_bytes() found application data while handshake
4238 processing was enabled when in fact s->s3->in_read_app_data was
4239 merely automatically cleared during the initial handshake.
4240 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4242 *) Fix object definitions for Private and Enterprise: they were not
4243 recognized in their shortname (=lowercase) representation. Extend
4244 obj_dat.pl to issue an error when using undefined keywords instead
4245 of silently ignoring the problem (Svenning Sorensen
4246 <sss@sss.dnsalias.net>).
4249 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4250 generators, i.e. generators other than 2 and 5. (Previously, the
4251 code did not properly initialise the 'add' and 'rem' values to
4252 BN_generate_prime().)
4254 In the new general case, we do not insist that 'generator' is
4255 actually a primitive root: This requirement is rather pointless;
4256 a generator of the order-q subgroup is just as good, if not
4260 *) Map new X509 verification errors to alerts. Discovered and submitted by
4261 Tom Wu <tom@arcot.com>.
4264 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4265 returning non-zero before the data has been completely received
4266 when using non-blocking I/O.
4267 [Bodo Moeller; problem pointed out by John Hughes]
4269 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4270 [Ben Laurie, Lutz Jaenicke]
4272 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4273 Yoram Zahavi <YoramZ@gilian.com>).
4276 *) Add information about CygWin 1.3 and on, and preserve proper
4277 configuration for the versions before that.
4278 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4280 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4281 check whether we deal with a copy of a session and do not delete from
4282 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4283 <izhar@checkpoint.com>.
4286 *) Do not store session data into the internal session cache, if it
4287 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4288 flag is set). Proposed by Aslam <aslam@funk.com>.
4291 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4295 *) [In 0.9.6d-engine release:]
4296 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4297 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4299 *) Add the configuration target linux-s390x.
4300 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4302 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4303 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4304 variable as an indication that a ClientHello message has been
4305 received. As the flag value will be lost between multiple
4306 invocations of ssl3_accept when using non-blocking I/O, the
4307 function may not be aware that a handshake has actually taken
4308 place, thus preventing a new session from being added to the
4311 To avoid this problem, we now set s->new_session to 2 instead of
4312 using a local variable.
4313 [Lutz Jaenicke, Bodo Moeller]
4315 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4316 if the SSL_R_LENGTH_MISMATCH error is detected.
4317 [Geoff Thorpe, Bodo Moeller]
4319 *) New 'shared_ldflag' column in Configure platform table.
4322 *) Fix EVP_CIPHER_mode macro.
4323 ["Dan S. Camper" <dan@bti.net>]
4325 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4326 type, we must throw them away by setting rr->length to 0.
4327 [D P Chang <dpc@qualys.com>]
4329 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4331 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4332 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4333 worked incorrectly for those cases where range = 10..._2 and
4334 3*range is two bits longer than range.)
4337 *) Only add signing time to PKCS7 structures if it is not already
4341 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4342 OBJ_ld_ce should be OBJ_id_ce.
4343 Also some ip-pda OIDs in crypto/objects/objects.txt were
4344 incorrect (cf. RFC 3039).
4345 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4347 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4348 returns early because it has nothing to do.
4349 [Andy Schneider <andy.schneider@bjss.co.uk>]
4351 *) [In 0.9.6c-engine release:]
4352 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4353 [Andy Schneider <andy.schneider@bjss.co.uk>]
4355 *) [In 0.9.6c-engine release:]
4356 Add support for Cryptographic Appliance's keyserver technology.
4357 (Use engine 'keyclient')
4358 [Cryptographic Appliances and Geoff Thorpe]
4360 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4361 is called via tools/c89.sh because arguments have to be
4362 rearranged (all '-L' options must appear before the first object
4364 [Richard Shapiro <rshapiro@abinitio.com>]
4366 *) [In 0.9.6c-engine release:]
4367 Add support for Broadcom crypto accelerator cards, backported
4369 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4371 *) [In 0.9.6c-engine release:]
4372 Add support for SureWare crypto accelerator cards from
4373 Baltimore Technologies. (Use engine 'sureware')
4374 [Baltimore Technologies and Mark Cox]
4376 *) [In 0.9.6c-engine release:]
4377 Add support for crypto accelerator cards from Accelerated
4378 Encryption Processing, www.aep.ie. (Use engine 'aep')
4379 [AEP Inc. and Mark Cox]
4381 *) Add a configuration entry for gcc on UnixWare.
4382 [Gary Benson <gbenson@redhat.com>]
4384 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4385 messages are stored in a single piece (fixed-length part and
4386 variable-length part combined) and fix various bugs found on the way.
4389 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4390 instead. BIO_gethostbyname() does not know what timeouts are
4391 appropriate, so entries would stay in cache even when they have
4393 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4395 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4396 faced with a pathologically small ClientHello fragment that does
4397 not contain client_version: Instead of aborting with an error,
4398 simply choose the highest available protocol version (i.e.,
4399 TLS 1.0 unless it is disabled). In practice, ClientHello
4400 messages are never sent like this, but this change gives us
4401 strictly correct behaviour at least for TLS.
4404 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4405 never resets s->method to s->ctx->method when called from within
4406 one of the SSL handshake functions.
4407 [Bodo Moeller; problem pointed out by Niko Baric]
4409 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4410 (sent using the client's version number) if client_version is
4411 smaller than the protocol version in use. Also change
4412 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4413 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4414 the client will at least see that alert.
4417 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4421 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4422 client receives HelloRequest while in a handshake.
4423 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4425 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4426 should end in 'break', not 'goto end' which circuments various
4427 cleanups done in state SSL_ST_OK. But session related stuff
4428 must be disabled for SSL_ST_OK in the case that we just sent a
4431 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4432 before just sending a HelloRequest.
4433 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4435 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4436 reveal whether illegal block cipher padding was found or a MAC
4437 verification error occured. (Neither SSLerr() codes nor alerts
4438 are directly visible to potential attackers, but the information
4439 may leak via logfiles.)
4441 Similar changes are not required for the SSL 2.0 implementation
4442 because the number of padding bytes is sent in clear for SSL 2.0,
4443 and the extra bytes are just ignored. However ssl/s2_pkt.c
4444 failed to verify that the purported number of padding bytes is in
4448 *) Add OpenUNIX-8 support including shared libraries
4449 (Boyd Lynn Gerber <gerberb@zenez.com>).
4452 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4453 'wristwatch attack' using huge encoding parameters (cf.
4454 James H. Manger's CRYPTO 2001 paper). Note that the
4455 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4456 encoding parameters and hence was not vulnerable.
4459 *) BN_sqr() bug fix.
4460 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4462 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4463 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4464 followed by modular reduction.
4465 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4467 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4468 equivalent based on BN_pseudo_rand() instead of BN_rand().
4471 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4472 This function was broken, as the check for a new client hello message
4473 to handle SGC did not allow these large messages.
4474 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4477 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4480 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4481 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
4484 *) Rework the configuration and shared library support for Tru64 Unix.
4485 The configuration part makes use of modern compiler features and
4486 still retains old compiler behavior for those that run older versions
4487 of the OS. The shared library support part includes a variant that
4488 uses the RPATH feature, and is available through the special
4489 configuration target "alpha-cc-rpath", which will never be selected
4491 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
4493 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
4494 with the same message size as in ssl3_get_certificate_request().
4495 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
4496 messages might inadvertently be reject as too long.
4497 [Petr Lampa <lampa@fee.vutbr.cz>]
4499 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
4502 *) Modified SSL library such that the verify_callback that has been set
4503 specificly for an SSL object with SSL_set_verify() is actually being
4504 used. Before the change, a verify_callback set with this function was
4505 ignored and the verify_callback() set in the SSL_CTX at the time of
4506 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
4507 to allow the necessary settings.
4510 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
4511 explicitly to NULL, as at least on Solaris 8 this seems not always to be
4512 done automatically (in contradiction to the requirements of the C
4513 standard). This made problems when used from OpenSSH.
4516 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
4517 dh->length and always used
4519 BN_rand_range(priv_key, dh->p).
4521 BN_rand_range() is not necessary for Diffie-Hellman, and this
4522 specific range makes Diffie-Hellman unnecessarily inefficient if
4523 dh->length (recommended exponent length) is much smaller than the
4524 length of dh->p. We could use BN_rand_range() if the order of
4525 the subgroup was stored in the DH structure, but we only have
4530 BN_rand(priv_key, l, ...)
4532 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
4538 RSA_eay_public_encrypt
4539 RSA_eay_private_decrypt
4540 RSA_eay_private_encrypt (signing)
4541 RSA_eay_public_decrypt (signature verification)
4543 (default implementations for RSA_public_encrypt,
4544 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
4545 always reject numbers >= n.
4548 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
4549 to synchronize access to 'locking_thread'. This is necessary on
4550 systems where access to 'locking_thread' (an 'unsigned long'
4551 variable) is not atomic.
4554 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
4555 *before* setting the 'crypto_lock_rand' flag. The previous code had
4556 a race condition if 0 is a valid thread ID.
4557 [Travis Vitek <vitek@roguewave.com>]
4559 *) Add support for shared libraries under Irix.
4560 [Albert Chin-A-Young <china@thewrittenword.com>]
4562 *) Add configuration option to build on Linux on both big-endian and
4564 [Ralf Baechle <ralf@uni-koblenz.de>]
4566 *) Add the possibility to create shared libraries on HP-UX.
4569 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
4571 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
4572 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
4573 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
4574 PRNG state recovery was possible based on the output of
4575 one PRNG request appropriately sized to gain knowledge on
4576 'md' followed by enough consecutive 1-byte PRNG requests
4577 to traverse all of 'state'.
4579 1. When updating 'md_local' (the current thread's copy of 'md')
4580 during PRNG output generation, hash all of the previous
4581 'md_local' value, not just the half used for PRNG output.
4583 2. Make the number of bytes from 'state' included into the hash
4584 independent from the number of PRNG bytes requested.
4586 The first measure alone would be sufficient to avoid
4587 Markku-Juhani's attack. (Actually it had never occurred
4588 to me that the half of 'md_local' used for chaining was the
4589 half from which PRNG output bytes were taken -- I had always
4590 assumed that the secret half would be used.) The second
4591 measure makes sure that additional data from 'state' is never
4592 mixed into 'md_local' in small portions; this heuristically
4593 further strengthens the PRNG.
4596 *) Fix crypto/bn/asm/mips3.s.
4599 *) When only the key is given to "enc", the IV is undefined. Print out
4600 an error message in this case.
4603 *) Handle special case when X509_NAME is empty in X509 printing routines.
4606 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
4607 positive and less than q.
4610 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
4611 used: it isn't thread safe and the add_lock_callback should handle
4613 [Paul Rose <Paul.Rose@bridge.com>]
4615 *) Verify that incoming data obeys the block size in
4616 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
4620 [Ulf Möller, Bodo Möller]
4622 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
4623 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
4624 when fixing the server behaviour for backwards-compatible 'client
4625 hello' messages. (Note that the attack is impractical against
4626 SSL 3.0 and TLS 1.0 anyway because length and version checking
4627 means that the probability of guessing a valid ciphertext is
4628 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
4631 Before 0.9.5, the countermeasure (hide the error by generating a
4632 random 'decryption result') did not work properly because
4633 ERR_clear_error() was missing, meaning that SSL_get_error() would
4634 detect the supposedly ignored error.
4636 Both problems are now fixed.
4639 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
4640 (previously it was 1024).
4643 *) Fix for compatibility mode trust settings: ignore trust settings
4644 unless some valid trust or reject settings are present.
4647 *) Fix for blowfish EVP: its a variable length cipher.
4650 *) Fix various bugs related to DSA S/MIME verification. Handle missing
4651 parameters in DSA public key structures and return an error in the
4652 DSA routines if parameters are absent.
4655 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
4656 in the current directory if neither $RANDFILE nor $HOME was set.
4657 RAND_file_name() in 0.9.6a returned NULL in this case. This has
4658 caused some confusion to Windows users who haven't defined $HOME.
4659 Thus RAND_file_name() is changed again: e_os.h can define a
4660 DEFAULT_HOME, which will be used if $HOME is not set.
4661 For Windows, we use "C:"; on other platforms, we still require
4662 environment variables.
4664 *) Move 'if (!initialized) RAND_poll()' into regions protected by
4665 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
4666 having multiple threads call RAND_poll() concurrently.
4669 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
4670 combination of a flag and a thread ID variable.
4671 Otherwise while one thread is in ssleay_rand_bytes (which sets the
4672 flag), *other* threads can enter ssleay_add_bytes without obeying
4673 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
4674 that they do not hold after the first thread unsets add_do_not_lock).
4677 *) Change bctest again: '-x' expressions are not available in all
4681 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
4683 *) Fix a couple of memory leaks in PKCS7_dataDecode()
4684 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
4686 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
4687 the default extension for executables, if any. Also, make the perl
4688 scripts that use symlink() to test if it really exists and use "cp"
4689 if it doesn't. All this made OpenSSL compilable and installable in
4693 *) Fix for asn1_GetSequence() for indefinite length constructed data.
4694 If SEQUENCE is length is indefinite just set c->slen to the total
4695 amount of data available.
4696 [Steve Henson, reported by shige@FreeBSD.org]
4697 [This change does not apply to 0.9.7.]
4699 *) Change bctest to avoid here-documents inside command substitution
4700 (workaround for FreeBSD /bin/sh bug).
4701 For compatibility with Ultrix, avoid shell functions (introduced
4702 in the bctest version that searches along $PATH).
4705 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
4706 with des_encrypt() defined on some operating systems, like Solaris
4710 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
4711 On the Importance of Eliminating Errors in Cryptographic
4712 Computations, J. Cryptology 14 (2001) 2, 101-119,
4713 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
4716 *) MIPS assembler BIGNUM division bug fix.
4719 *) Disabled incorrect Alpha assembler code.
4722 *) Fix PKCS#7 decode routines so they correctly update the length
4723 after reading an EOC for the EXPLICIT tag.
4725 [This change does not apply to 0.9.7.]
4727 *) Fix bug in PKCS#12 key generation routines. This was triggered
4728 if a 3DES key was generated with a 0 initial byte. Include
4729 PKCS12_BROKEN_KEYGEN compilation option to retain the old
4730 (but broken) behaviour.
4733 *) Enhance bctest to search for a working bc along $PATH and print
4735 [Tim Rice <tim@multitalents.net> via Richard Levitte]
4737 *) Fix memory leaks in err.c: free err_data string if necessary;
4738 don't write to the wrong index in ERR_set_error_data.
4741 *) Implement ssl23_peek (analogous to ssl23_read), which previously
4745 *) Replace rdtsc with _emit statements for VC++ version 5.
4746 [Jeremy Cooper <jeremy@baymoo.org>]
4748 *) Make it possible to reuse SSLv2 sessions.
4751 *) In copy_email() check for >= 0 as a return value for
4752 X509_NAME_get_index_by_NID() since 0 is a valid index.
4753 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
4755 *) Avoid coredump with unsupported or invalid public keys by checking if
4756 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
4757 PKCS7_verify() fails with non detached data.
4760 *) Don't use getenv in library functions when run as setuid/setgid.
4761 New function OPENSSL_issetugid().
4764 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
4765 due to incorrect handling of multi-threading:
4767 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
4769 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
4771 3. Count how many times MemCheck_off() has been called so that
4772 nested use can be treated correctly. This also avoids
4773 inband-signalling in the previous code (which relied on the
4774 assumption that thread ID 0 is impossible).
4777 *) Add "-rand" option also to s_client and s_server.
4780 *) Fix CPU detection on Irix 6.x.
4781 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
4782 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
4784 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
4787 [This change does not apply to 0.9.7.]
4789 *) Use the cached encoding of an X509_NAME structure rather than
4790 copying it. This is apparently the reason for the libsafe "errors"
4791 but the code is actually correct.
4794 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
4795 Bleichenbacher's DSA attack.
4796 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
4797 to be set and top=0 forces the highest bit to be set; top=-1 is new
4798 and leaves the highest bit random.
4799 [Ulf Moeller, Bodo Moeller]
4801 *) In the NCONF_...-based implementations for CONF_... queries
4802 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
4803 a temporary CONF structure with the data component set to NULL
4804 (which gives segmentation faults in lh_retrieve).
4805 Instead, use NULL for the CONF pointer in CONF_get_string and
4806 CONF_get_number (which may use environment variables) and directly
4807 return NULL from CONF_get_section.
4810 *) Fix potential buffer overrun for EBCDIC.
4813 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
4814 keyUsage if basicConstraints absent for a CA.
4817 *) Make SMIME_write_PKCS7() write mail header values with a format that
4818 is more generally accepted (no spaces before the semicolon), since
4819 some programs can't parse those values properly otherwise. Also make
4820 sure BIO's that break lines after each write do not create invalid
4824 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
4825 macros previously used would not encode an empty SEQUENCE OF
4826 and break the signature.
4828 [This change does not apply to 0.9.7.]
4830 *) Zero the premaster secret after deriving the master secret in
4834 *) Add some EVP_add_digest_alias registrations (as found in
4835 OpenSSL_add_all_digests()) to SSL_library_init()
4836 aka OpenSSL_add_ssl_algorithms(). This provides improved
4837 compatibility with peers using X.509 certificates
4838 with unconventional AlgorithmIdentifier OIDs.
4841 *) Fix for Irix with NO_ASM.
4842 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
4844 *) ./config script fixes.
4845 [Ulf Moeller, Richard Levitte]
4847 *) Fix 'openssl passwd -1'.
4850 *) Change PKCS12_key_gen_asc() so it can cope with non null
4851 terminated strings whose length is passed in the passlen
4852 parameter, for example from PEM callbacks. This was done
4853 by adding an extra length parameter to asc2uni().
4854 [Steve Henson, reported by <oddissey@samsung.co.kr>]
4856 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
4857 call failed, free the DSA structure.
4860 *) Fix to uni2asc() to cope with zero length Unicode strings.
4861 These are present in some PKCS#12 files.
4864 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
4865 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
4866 when writing a 32767 byte record.
4867 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
4869 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
4870 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
4872 (RSA objects have a reference count access to which is protected
4873 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
4874 so they are meant to be shared between threads.)
4875 [Bodo Moeller, Geoff Thorpe; original patch submitted by
4876 "Reddie, Steven" <Steven.Reddie@ca.com>]
4878 *) Fix a deadlock in CRYPTO_mem_leaks().
4881 *) Use better test patterns in bntest.
4884 *) rand_win.c fix for Borland C.
4887 *) BN_rshift bugfix for n == 0.
4890 *) Add a 'bctest' script that checks for some known 'bc' bugs
4891 so that 'make test' does not abort just because 'bc' is broken.
4894 *) Store verify_result within SSL_SESSION also for client side to
4895 avoid potential security hole. (Re-used sessions on the client side
4896 always resulted in verify_result==X509_V_OK, not using the original
4897 result of the server certificate verification.)
4900 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
4901 SSL3_RT_APPLICATION_DATA, return 0.
4902 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
4906 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
4907 releases, have been re-implemented by renaming the previous
4908 implementations of ssl2_read and ssl3_read to ssl2_read_internal
4909 and ssl3_read_internal, respectively, and adding 'peek' parameters
4910 to them. The new ssl[23]_{read,peek} functions are calls to
4911 ssl[23]_read_internal with the 'peek' flag set appropriately.
4912 A 'peek' parameter has also been added to ssl3_read_bytes, which
4913 does the actual work for ssl3_read_internal.
4916 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
4917 the method-specific "init()" handler. Also clean up ex_data after
4918 calling the method-specific "finish()" handler. Previously, this was
4919 happening the other way round.
4922 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
4923 The previous value, 12, was not always sufficient for BN_mod_exp().
4926 *) Make sure that shared libraries get the internal name engine with
4927 the full version number and not just 0. This should mark the
4928 shared libraries as not backward compatible. Of course, this should
4929 be changed again when we can guarantee backward binary compatibility.
4932 *) Fix typo in get_cert_by_subject() in by_dir.c
4933 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
4935 *) Rework the system to generate shared libraries:
4937 - Make note of the expected extension for the shared libraries and
4938 if there is a need for symbolic links from for example libcrypto.so.0
4939 to libcrypto.so.0.9.7. There is extended info in Configure for
4942 - Make as few rebuilds of the shared libraries as possible.
4944 - Still avoid linking the OpenSSL programs with the shared libraries.
4946 - When installing, install the shared libraries separately from the
4950 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
4952 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
4953 and not in SSL_clear because the latter is also used by the
4954 accept/connect functions; previously, the settings made by
4955 SSL_set_read_ahead would be lost during the handshake.
4956 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
4958 *) Correct util/mkdef.pl to be selective about disabled algorithms.
4959 Previously, it would create entries for disableed algorithms no
4963 *) Added several new manual pages for SSL_* function.
4966 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
4968 *) In ssl23_get_client_hello, generate an error message when faced
4969 with an initial SSL 3.0/TLS record that is too small to contain the
4970 first two bytes of the ClientHello message, i.e. client_version.
4971 (Note that this is a pathologic case that probably has never happened
4972 in real life.) The previous approach was to use the version number
4973 from the record header as a substitute; but our protocol choice
4974 should not depend on that one because it is not authenticated
4975 by the Finished messages.
4978 *) More robust randomness gathering functions for Windows.
4979 [Jeffrey Altman <jaltman@columbia.edu>]
4981 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
4982 not set then we don't setup the error code for issuer check errors
4983 to avoid possibly overwriting other errors which the callback does
4984 handle. If an application does set the flag then we assume it knows
4985 what it is doing and can handle the new informational codes
4989 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
4990 a general "ANY" type, as such it should be able to decode anything
4991 including tagged types. However it didn't check the class so it would
4992 wrongly interpret tagged types in the same way as their universal
4993 counterpart and unknown types were just rejected. Changed so that the
4994 tagged and unknown types are handled in the same way as a SEQUENCE:
4995 that is the encoding is stored intact. There is also a new type
4996 "V_ASN1_OTHER" which is used when the class is not universal, in this
4997 case we have no idea what the actual type is so we just lump them all
5001 *) On VMS, stdout may very well lead to a file that is written to
5002 in a record-oriented fashion. That means that every write() will
5003 write a separate record, which will be read separately by the
5004 programs trying to read from it. This can be very confusing.
5006 The solution is to put a BIO filter in the way that will buffer
5007 text until a linefeed is reached, and then write everything a
5008 line at a time, so every record written will be an actual line,
5009 not chunks of lines and not (usually doesn't happen, but I've
5010 seen it once) several lines in one record. BIO_f_linebuffer() is
5013 Currently, it's a VMS-only method, because that's where it has
5014 been tested well enough.
5017 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
5018 it can return incorrect results.
5019 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
5020 but it was in 0.9.6-beta[12].)
5023 *) Disable the check for content being present when verifying detached
5024 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5025 include zero length content when signing messages.
5028 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5029 BIO_ctrl (for BIO pairs).
5032 *) Add DSO method for VMS.
5035 *) Bug fix: Montgomery multiplication could produce results with the
5039 *) Add RPM specification openssl.spec and modify it to build three
5040 packages. The default package contains applications, application
5041 documentation and run-time libraries. The devel package contains
5042 include files, static libraries and function documentation. The
5043 doc package contains the contents of the doc directory. The original
5044 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5047 *) Add a large number of documentation files for many SSL routines.
5048 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5050 *) Add a configuration entry for Sony News 4.
5051 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5053 *) Don't set the two most significant bits to one when generating a
5054 random number < q in the DSA library.
5057 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5058 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5059 the underlying transport is blocking) if a handshake took place.
5060 (The default behaviour is needed by applications such as s_client
5061 and s_server that use select() to determine when to use SSL_read;
5062 but for applications that know in advance when to expect data, it
5063 just makes things more complicated.)
5066 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5070 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5071 work better on such systems.
5072 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5074 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5075 Update PKCS12_parse() so it copies the friendlyName and the
5076 keyid to the certificates aux info.
5079 *) Fix bug in PKCS7_verify() which caused an infinite loop
5080 if there was more than one signature.
5081 [Sven Uszpelkat <su@celocom.de>]
5083 *) Major change in util/mkdef.pl to include extra information
5084 about each symbol, as well as presentig variables as well
5085 as functions. This change means that there's n more need
5086 to rebuild the .num files when some algorithms are excluded.
5089 *) Allow the verify time to be set by an application,
5090 rather than always using the current time.
5093 *) Phase 2 verify code reorganisation. The certificate
5094 verify code now looks up an issuer certificate by a
5095 number of criteria: subject name, authority key id
5096 and key usage. It also verifies self signed certificates
5097 by the same criteria. The main comparison function is
5098 X509_check_issued() which performs these checks.
5100 Lot of changes were necessary in order to support this
5101 without completely rewriting the lookup code.
5103 Authority and subject key identifier are now cached.
5105 The LHASH 'certs' is X509_STORE has now been replaced
5106 by a STACK_OF(X509_OBJECT). This is mainly because an
5107 LHASH can't store or retrieve multiple objects with
5108 the same hash value.
5110 As a result various functions (which were all internal
5111 use only) have changed to handle the new X509_STORE
5112 structure. This will break anything that messed round
5113 with X509_STORE internally.
5115 The functions X509_STORE_add_cert() now checks for an
5116 exact match, rather than just subject name.
5118 The X509_STORE API doesn't directly support the retrieval
5119 of multiple certificates matching a given criteria, however
5120 this can be worked round by performing a lookup first
5121 (which will fill the cache with candidate certificates)
5122 and then examining the cache for matches. This is probably
5123 the best we can do without throwing out X509_LOOKUP
5124 entirely (maybe later...).
5126 The X509_VERIFY_CTX structure has been enhanced considerably.
5128 All certificate lookup operations now go via a get_issuer()
5129 callback. Although this currently uses an X509_STORE it
5130 can be replaced by custom lookups. This is a simple way
5131 to bypass the X509_STORE hackery necessary to make this
5132 work and makes it possible to use more efficient techniques
5133 in future. A very simple version which uses a simple
5134 STACK for its trusted certificate store is also provided
5135 using X509_STORE_CTX_trusted_stack().
5137 The verify_cb() and verify() callbacks now have equivalents
5138 in the X509_STORE_CTX structure.
5140 X509_STORE_CTX also has a 'flags' field which can be used
5141 to customise the verify behaviour.
5144 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5145 excludes S/MIME capabilities.
5148 *) When a certificate request is read in keep a copy of the
5149 original encoding of the signed data and use it when outputing
5150 again. Signatures then use the original encoding rather than
5151 a decoded, encoded version which may cause problems if the
5152 request is improperly encoded.
5155 *) For consistency with other BIO_puts implementations, call
5156 buffer_write(b, ...) directly in buffer_puts instead of calling
5159 In BIO_puts, increment b->num_write as in BIO_write.
5160 [Peter.Sylvester@EdelWeb.fr]
5162 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5163 BN_zero, we may not return a BIGNUM with an array consisting of
5167 *) Avoid calling abort() from within the library when problems are
5168 detected, except if preprocessor symbols have been defined
5169 (such as REF_CHECK, BN_DEBUG etc.).
5172 *) New openssl application 'rsautl'. This utility can be
5173 used for low level RSA operations. DER public key
5174 BIO/fp routines also added.
5177 *) New Configure entry and patches for compiling on QNX 4.
5178 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5180 *) A demo state-machine implementation was sponsored by
5181 Nuron (http://www.nuron.com/) and is now available in
5182 demos/state_machine.
5185 *) New options added to the 'dgst' utility for signature
5186 generation and verification.
5189 *) Unrecognized PKCS#7 content types are now handled via a
5190 catch all ASN1_TYPE structure. This allows unsupported
5191 types to be stored as a "blob" and an application can
5192 encode and decode it manually.
5195 *) Fix various signed/unsigned issues to make a_strex.c
5197 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5199 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5200 length if passed a buffer. ASN1_INTEGER_to_BN failed
5201 if passed a NULL BN and its argument was negative.
5202 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5204 *) Modification to PKCS#7 encoding routines to output definite
5205 length encoding. Since currently the whole structures are in
5206 memory there's not real point in using indefinite length
5207 constructed encoding. However if OpenSSL is compiled with
5208 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5211 *) Added BIO_vprintf() and BIO_vsnprintf().
5214 *) Added more prefixes to parse for in the the strings written
5215 through a logging bio, to cover all the levels that are available
5216 through syslog. The prefixes are now:
5218 PANIC, EMERG, EMR => LOG_EMERG
5219 ALERT, ALR => LOG_ALERT
5220 CRIT, CRI => LOG_CRIT
5221 ERROR, ERR => LOG_ERR
5222 WARNING, WARN, WAR => LOG_WARNING
5223 NOTICE, NOTE, NOT => LOG_NOTICE
5224 INFO, INF => LOG_INFO
5225 DEBUG, DBG => LOG_DEBUG
5227 and as before, if none of those prefixes are present at the
5228 beginning of the string, LOG_ERR is chosen.
5230 On Win32, the LOG_* levels are mapped according to this:
5232 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5233 LOG_WARNING => EVENTLOG_WARNING_TYPE
5234 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5238 *) Made it possible to reconfigure with just the configuration
5239 argument "reconf" or "reconfigure". The command line arguments
5240 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5241 and are retrieved from there when reconfiguring.
5245 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5247 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5250 *) The obj_dat.pl script was messing up the sorting of object
5251 names. The reason was that it compared the quoted version
5252 of strings as a result "OCSP" > "OCSP Signing" because
5253 " > SPACE. Changed script to store unquoted versions of
5254 names and add quotes on output. It was also omitting some
5255 names from the lookup table if they were given a default
5256 value (that is if SN is missing it is given the same
5257 value as LN and vice versa), these are now added on the
5258 grounds that if an object has a name we should be able to
5259 look it up. Finally added warning output when duplicate
5260 short or long names are found.
5263 *) Changes needed for Tandem NSK.
5264 [Scott Uroff <scott@xypro.com>]
5266 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5267 RSA_padding_check_SSLv23(), special padding was never detected
5268 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5269 version rollback attacks was not effective.
5271 In s23_clnt.c, don't use special rollback-attack detection padding
5272 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5273 client; similarly, in s23_srvr.c, don't do the rollback check if
5274 SSL 2.0 is the only protocol enabled in the server.
5277 *) Make it possible to get hexdumps of unprintable data with 'openssl
5278 asn1parse'. By implication, the functions ASN1_parse_dump() and
5279 BIO_dump_indent() are added.
5282 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5283 these print out strings and name structures based on various
5284 flags including RFC2253 support and proper handling of
5285 multibyte characters. Added options to the 'x509' utility
5286 to allow the various flags to be set.
5289 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5290 Also change the functions X509_cmp_current_time() and
5291 X509_gmtime_adj() work with an ASN1_TIME structure,
5292 this will enable certificates using GeneralizedTime in validity
5293 dates to be checked.
5296 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5297 negative public key encodings) on by default,
5298 NO_NEG_PUBKEY_BUG can be set to disable it.
5301 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5302 content octets. An i2c_ASN1_OBJECT is unnecessary because
5303 the encoding can be trivially obtained from the structure.
5306 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5307 not read locks (CRYPTO_r_[un]lock).
5310 *) A first attempt at creating official support for shared
5311 libraries through configuration. I've kept it so the
5312 default is static libraries only, and the OpenSSL programs
5313 are always statically linked for now, but there are
5314 preparations for dynamic linking in place.
5315 This has been tested on Linux and Tru64.
5318 *) Randomness polling function for Win9x, as described in:
5319 Peter Gutmann, Software Generation of Practically Strong
5323 *) Fix so PRNG is seeded in req if using an already existing
5327 *) New options to smime application. -inform and -outform
5328 allow alternative formats for the S/MIME message including
5329 PEM and DER. The -content option allows the content to be
5330 specified separately. This should allow things like Netscape
5331 form signing output easier to verify.
5334 *) Fix the ASN1 encoding of tags using the 'long form'.
5337 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5338 STRING types. These convert content octets to and from the
5339 underlying type. The actual tag and length octets are
5340 already assumed to have been read in and checked. These
5341 are needed because all other string types have virtually
5342 identical handling apart from the tag. By having versions
5343 of the ASN1 functions that just operate on content octets
5344 IMPLICIT tagging can be handled properly. It also allows
5345 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5346 and ASN1_INTEGER are identical apart from the tag.
5349 *) Change the handling of OID objects as follows:
5351 - New object identifiers are inserted in objects.txt, following
5352 the syntax given in objects.README.
5353 - objects.pl is used to process obj_mac.num and create a new
5355 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5358 This is currently kind of a hack, and the perl code in objects.pl
5359 isn't very elegant, but it works as I intended. The simplest way
5360 to check that it worked correctly is to look in obj_dat.h and
5361 check the array nid_objs and make sure the objects haven't moved
5362 around (this is important!). Additions are OK, as well as
5363 consistent name changes.
5366 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5369 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5370 The given file adds to whatever has already been seeded into the
5371 random pool through the RANDFILE configuration file option or
5372 environment variable, or the default random state file.
5375 *) mkstack.pl now sorts each macro group into lexical order.
5376 Previously the output order depended on the order the files
5377 appeared in the directory, resulting in needless rewriting
5381 *) Patches to make OpenSSL compile under Win32 again. Mostly
5382 work arounds for the VC++ problem that it treats func() as
5383 func(void). Also stripped out the parts of mkdef.pl that
5384 added extra typesafe functions: these no longer exist.
5387 *) Reorganisation of the stack code. The macros are now all
5388 collected in safestack.h . Each macro is defined in terms of
5389 a "stack macro" of the form SKM_<name>(type, a, b). The
5390 DEBUG_SAFESTACK is now handled in terms of function casts,
5391 this has the advantage of retaining type safety without the
5392 use of additional functions. If DEBUG_SAFESTACK is not defined
5393 then the non typesafe macros are used instead. Also modified the
5394 mkstack.pl script to handle the new form. Needs testing to see
5395 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5396 the default if no major problems. Similar behaviour for ASN1_SET_OF
5397 and PKCS12_STACK_OF.
5400 *) When some versions of IIS use the 'NET' form of private key the
5401 key derivation algorithm is different. Normally MD5(password) is
5402 used as a 128 bit RC4 key. In the modified case
5403 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5404 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5405 as the old Netscape_RSA functions except they have an additional
5406 'sgckey' parameter which uses the modified algorithm. Also added
5407 an -sgckey command line option to the rsa utility. Thanks to
5408 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5409 algorithm to openssl-dev.
5412 *) The evp_local.h macros were using 'c.##kname' which resulted in
5413 invalid expansion on some systems (SCO 5.0.5 for example).
5414 Corrected to 'c.kname'.
5415 [Phillip Porch <root@theporch.com>]
5417 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5418 a STACK of email addresses from a certificate or request, these look
5419 in the subject name and the subject alternative name extensions and
5420 omit any duplicate addresses.
5423 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5424 This makes DSA verification about 2 % faster.
5427 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5428 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5429 plus overhead for 1024 bit moduli).
5430 This makes exponentiations about 0.5 % faster for 1024 bit
5431 exponents (as measured by "openssl speed rsa2048").
5434 *) Rename memory handling macros to avoid conflicts with other
5436 Malloc => OPENSSL_malloc
5437 Malloc_locked => OPENSSL_malloc_locked
5438 Realloc => OPENSSL_realloc
5439 Free => OPENSSL_free
5442 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5443 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5446 *) CygWin32 support.
5447 [John Jarvie <jjarvie@newsguy.com>]
5449 *) The type-safe stack code has been rejigged. It is now only compiled
5450 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5451 by default all type-specific stack functions are "#define"d back to
5452 standard stack functions. This results in more streamlined output
5453 but retains the type-safety checking possibilities of the original
5457 *) The STACK code has been cleaned up, and certain type declarations
5458 that didn't make a lot of sense have been brought in line. This has
5459 also involved a cleanup of sorts in safestack.h to more correctly
5460 map type-safe stack functions onto their plain stack counterparts.
5461 This work has also resulted in a variety of "const"ifications of
5462 lots of the code, especially "_cmp" operations which should normally
5463 be prototyped with "const" parameters anyway.
5466 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5467 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5468 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5469 where all of 'md' is used each time the PRNG is used, but 'state'
5470 is used only indexed by a cyclic counter. As entropy may not be
5471 well distributed from the beginning, 'md' is important as a
5472 chaining variable. However, the output function chains only half
5473 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5474 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5475 in all of 'state' being rewritten, with the new values depending
5476 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5479 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5480 the handshake is continued after ssl_verify_cert_chain();
5481 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5482 can lead to 'unexplainable' connection aborts later.
5483 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
5485 *) Major EVP API cipher revision.
5486 Add hooks for extra EVP features. This allows various cipher
5487 parameters to be set in the EVP interface. Support added for variable
5488 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
5489 setting of RC2 and RC5 parameters.
5491 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
5494 Remove lots of duplicated code from the EVP library. For example *every*
5495 cipher init() function handles the 'iv' in the same way according to the
5496 cipher mode. They also all do nothing if the 'key' parameter is NULL and
5497 for CFB and OFB modes they zero ctx->num.
5499 New functionality allows removal of S/MIME code RC2 hack.
5501 Most of the routines have the same form and so can be declared in terms
5504 By shifting this to the top level EVP_CipherInit() it can be removed from
5505 all individual ciphers. If the cipher wants to handle IVs or keys
5506 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
5509 Change lots of functions like EVP_EncryptUpdate() to now return a
5510 value: although software versions of the algorithms cannot fail
5511 any installed hardware versions can.
5514 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
5515 this option is set, tolerate broken clients that send the negotiated
5516 protocol version number instead of the requested protocol version
5520 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
5521 i.e. non-zero for export ciphersuites, zero otherwise.
5522 Previous versions had this flag inverted, inconsistent with
5523 rsa_tmp_cb (..._TMP_RSA_CB).
5524 [Bodo Moeller; problem reported by Amit Chopra]
5526 *) Add missing DSA library text string. Work around for some IIS
5527 key files with invalid SEQUENCE encoding.
5530 *) Add a document (doc/standards.txt) that list all kinds of standards
5531 and so on that are implemented in OpenSSL.
5534 *) Enhance c_rehash script. Old version would mishandle certificates
5535 with the same subject name hash and wouldn't handle CRLs at all.
5536 Added -fingerprint option to crl utility, to support new c_rehash
5540 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
5543 *) Fix for SSL server purpose checking. Server checking was
5544 rejecting certificates which had extended key usage present
5545 but no ssl client purpose.
5546 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
5548 *) Make PKCS#12 code work with no password. The PKCS#12 spec
5549 is a little unclear about how a blank password is handled.
5550 Since the password in encoded as a BMPString with terminating
5551 double NULL a zero length password would end up as just the
5552 double NULL. However no password at all is different and is
5553 handled differently in the PKCS#12 key generation code. NS
5554 treats a blank password as zero length. MSIE treats it as no
5555 password on export: but it will try both on import. We now do
5556 the same: PKCS12_parse() tries zero length and no password if
5557 the password is set to "" or NULL (NULL is now a valid password:
5558 it wasn't before) as does the pkcs12 application.
5561 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
5562 perror when PEM_read_bio_X509_REQ fails, the error message must
5563 be obtained from the error queue.
5566 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
5567 it in ERR_remove_state if appropriate, and change ERR_get_state
5568 accordingly to avoid race conditions (this is necessary because
5569 thread_hash is no longer constant once set).
5572 *) Bugfix for linux-elf makefile.one.
5575 *) RSA_get_default_method() will now cause a default
5576 RSA_METHOD to be chosen if one doesn't exist already.
5577 Previously this was only set during a call to RSA_new()
5578 or RSA_new_method(NULL) meaning it was possible for
5579 RSA_get_default_method() to return NULL.
5582 *) Added native name translation to the existing DSO code
5583 that will convert (if the flag to do so is set) filenames
5584 that are sufficiently small and have no path information
5585 into a canonical native form. Eg. "blah" converted to
5586 "libblah.so" or "blah.dll" etc.
5589 *) New function ERR_error_string_n(e, buf, len) which is like
5590 ERR_error_string(e, buf), but writes at most 'len' bytes
5591 including the 0 terminator. For ERR_error_string_n, 'buf'
5593 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
5595 *) CONF library reworked to become more general. A new CONF
5596 configuration file reader "class" is implemented as well as a
5597 new functions (NCONF_*, for "New CONF") to handle it. The now
5598 old CONF_* functions are still there, but are reimplemented to
5599 work in terms of the new functions. Also, a set of functions
5600 to handle the internal storage of the configuration data is
5601 provided to make it easier to write new configuration file
5602 reader "classes" (I can definitely see something reading a
5603 configuration file in XML format, for example), called _CONF_*,
5604 or "the configuration storage API"...
5606 The new configuration file reading functions are:
5608 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
5609 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
5611 NCONF_default, NCONF_WIN32
5613 NCONF_dump_fp, NCONF_dump_bio
5615 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
5616 NCONF_new creates a new CONF object. This works in the same way
5617 as other interfaces in OpenSSL, like the BIO interface.
5618 NCONF_dump_* dump the internal storage of the configuration file,
5619 which is useful for debugging. All other functions take the same
5620 arguments as the old CONF_* functions wth the exception of the
5621 first that must be a `CONF *' instead of a `LHASH *'.
5623 To make it easer to use the new classes with the old CONF_* functions,
5624 the function CONF_set_default_method is provided.
5627 *) Add '-tls1' option to 'openssl ciphers', which was already
5628 mentioned in the documentation but had not been implemented.
5629 (This option is not yet really useful because even the additional
5630 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
5633 *) Initial DSO code added into libcrypto for letting OpenSSL (and
5634 OpenSSL-based applications) load shared libraries and bind to
5635 them in a portable way.
5636 [Geoff Thorpe, with contributions from Richard Levitte]
5638 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
5640 *) Make sure _lrotl and _lrotr are only used with MSVC.
5642 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
5643 (the default implementation of RAND_status).
5645 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
5646 to '-clrext' (= clear extensions), as intended and documented.
5647 [Bodo Moeller; inconsistency pointed out by Michael Attili
5650 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
5651 was larger than the MD block size.
5652 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
5654 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
5655 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
5656 using the passed key: if the passed key was a private key the result
5657 of X509_print(), for example, would be to print out all the private key
5661 *) des_quad_cksum() byte order bug fix.
5662 [Ulf Möller, using the problem description in krb4-0.9.7, where
5663 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
5665 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
5667 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
5669 *) For easily testing in shell scripts whether some command
5670 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
5671 returns with exit code 0 iff no command of the given name is available.
5672 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
5673 the output goes to stdout and nothing is printed to stderr.
5674 Additional arguments are always ignored.
5676 Since for each cipher there is a command of the same name,
5677 the 'no-cipher' compilation switches can be tested this way.
5679 ('openssl no-XXX' is not able to detect pseudo-commands such
5680 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
5683 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
5686 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
5687 is set; it will be thrown away anyway because each handshake creates
5689 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
5690 to parameters -- in previous versions (since OpenSSL 0.9.3) the
5691 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
5692 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
5695 *) New s_client option -ign_eof: EOF at stdin is ignored, and
5696 'Q' and 'R' lose their special meanings (quit/renegotiate).
5697 This is part of what -quiet does; unlike -quiet, -ign_eof
5698 does not suppress any output.
5701 *) Add compatibility options to the purpose and trust code. The
5702 purpose X509_PURPOSE_ANY is "any purpose" which automatically
5703 accepts a certificate or CA, this was the previous behaviour,
5704 with all the associated security issues.
5706 X509_TRUST_COMPAT is the old trust behaviour: only and
5707 automatically trust self signed roots in certificate store. A
5708 new trust setting X509_TRUST_DEFAULT is used to specify that
5709 a purpose has no associated trust setting and it should instead
5710 use the value in the default purpose.
5713 *) Fix the PKCS#8 DSA private key code so it decodes keys again
5714 and fix a memory leak.
5717 *) In util/mkerr.pl (which implements 'make errors'), preserve
5718 reason strings from the previous version of the .c file, as
5719 the default to have only downcase letters (and digits) in
5720 automatically generated reasons codes is not always appropriate.
5723 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
5724 using strerror. Previously, ERR_reason_error_string() returned
5725 library names as reason strings for SYSerr; but SYSerr is a special
5726 case where small numbers are errno values, not library numbers.
5729 *) Add '-dsaparam' option to 'openssl dhparam' application. This
5730 converts DSA parameters into DH parameters. (When creating parameters,
5731 DSA_generate_parameters is used.)
5734 *) Include 'length' (recommended exponent length) in C code generated
5735 by 'openssl dhparam -C'.
5738 *) The second argument to set_label in perlasm was already being used
5739 so couldn't be used as a "file scope" flag. Moved to third argument
5743 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
5744 instead of RAND_bytes for encryption IVs and salts.
5747 *) Include RAND_status() into RAND_METHOD instead of implementing
5748 it only for md_rand.c Otherwise replacing the PRNG by calling
5749 RAND_set_rand_method would be impossible.
5752 *) Don't let DSA_generate_key() enter an infinite loop if the random
5753 number generation fails.
5756 *) New 'rand' application for creating pseudo-random output.
5759 *) Added configuration support for Linux/IA64
5760 [Rolf Haberrecker <rolf@suse.de>]
5762 *) Assembler module support for Mingw32.
5765 *) Shared library support for HPUX (in shlib/).
5766 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
5768 *) Shared library support for Solaris gcc.
5769 [Lutz Behnke <behnke@trustcenter.de>]
5771 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
5773 *) PKCS7_encrypt() was adding text MIME headers twice because they
5774 were added manually and by SMIME_crlf_copy().
5777 *) In bntest.c don't call BN_rand with zero bits argument.
5778 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
5780 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
5781 case was implemented. This caused BN_div_recp() to fail occasionally.
5784 *) Add an optional second argument to the set_label() in the perl
5785 assembly language builder. If this argument exists and is set
5786 to 1 it signals that the assembler should use a symbol whose
5787 scope is the entire file, not just the current function. This
5788 is needed with MASM which uses the format label:: for this scope.
5789 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
5791 *) Change the ASN1 types so they are typedefs by default. Before
5792 almost all types were #define'd to ASN1_STRING which was causing
5793 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
5797 *) Change names of new functions to the new get1/get0 naming
5798 convention: After 'get1', the caller owns a reference count
5799 and has to call ..._free; 'get0' returns a pointer to some
5800 data structure without incrementing reference counters.
5801 (Some of the existing 'get' functions increment a reference
5802 counter, some don't.)
5803 Similarly, 'set1' and 'add1' functions increase reference
5804 counters or duplicate objects.
5807 *) Allow for the possibility of temp RSA key generation failure:
5808 the code used to assume it always worked and crashed on failure.
5811 *) Fix potential buffer overrun problem in BIO_printf().
5812 [Ulf Möller, using public domain code by Patrick Powell; problem
5813 pointed out by David Sacerdote <das33@cornell.edu>]
5815 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
5816 RAND_egd() and RAND_status(). In the command line application,
5817 the EGD socket can be specified like a seed file using RANDFILE
5821 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
5822 Some CAs (e.g. Verisign) distribute certificates in this form.
5825 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
5826 list to exclude them. This means that no special compilation option
5827 is needed to use anonymous DH: it just needs to be included in the
5831 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
5832 EVP_MD_type. The old functionality is available in a new macro called
5833 EVP_MD_md(). Change code that uses it and update docs.
5836 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
5837 where the 'void *' argument is replaced by a function pointer argument.
5838 Previously 'void *' was abused to point to functions, which works on
5839 many platforms, but is not correct. As these functions are usually
5840 called by macros defined in OpenSSL header files, most source code
5841 should work without changes.
5844 *) <openssl/opensslconf.h> (which is created by Configure) now contains
5845 sections with information on -D... compiler switches used for
5846 compiling the library so that applications can see them. To enable
5847 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
5848 must be defined. E.g.,
5849 #define OPENSSL_ALGORITHM_DEFINES
5850 #include <openssl/opensslconf.h>
5851 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
5852 [Richard Levitte, Ulf and Bodo Möller]
5854 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
5858 *) Change the 'other' type in certificate aux info to a STACK_OF
5859 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
5860 the required ASN1 format: arbitrary types determined by an OID.
5863 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
5864 argument to 'req'. This is not because the function is newer or
5865 better than others it just uses the work 'NEW' in the certificate
5866 request header lines. Some software needs this.
5869 *) Reorganise password command line arguments: now passwords can be
5870 obtained from various sources. Delete the PEM_cb function and make
5871 it the default behaviour: i.e. if the callback is NULL and the
5872 usrdata argument is not NULL interpret it as a null terminated pass
5873 phrase. If usrdata and the callback are NULL then the pass phrase
5874 is prompted for as usual.
5877 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
5878 the support is automatically enabled. The resulting binaries will
5879 autodetect the card and use it if present.
5880 [Ben Laurie and Compaq Inc.]
5882 *) Work around for Netscape hang bug. This sends certificate request
5883 and server done in one record. Since this is perfectly legal in the
5884 SSL/TLS protocol it isn't a "bug" option and is on by default. See
5885 the bugs/SSLv3 entry for more info.
5888 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
5891 *) Add -rand argument to smime and pkcs12 applications and read/write
5895 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
5898 *) Add command line password options to the remaining applications.
5901 *) Bug fix for BN_div_recp() for numerators with an even number of
5905 *) More tests in bntest.c, and changed test_bn output.
5908 *) ./config recognizes MacOS X now.
5911 *) Bug fix for BN_div() when the first words of num and divsor are
5912 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
5915 *) Add support for various broken PKCS#8 formats, and command line
5916 options to produce them.
5919 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
5920 get temporary BIGNUMs from a BN_CTX.
5923 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
5927 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
5928 include a #define from the old name to the new. The original intent
5929 was that statically linked binaries could for example just call
5930 SSLeay_add_all_ciphers() to just add ciphers to the table and not
5931 link with digests. This never worked becayse SSLeay_add_all_digests()
5932 and SSLeay_add_all_ciphers() were in the same source file so calling
5933 one would link with the other. They are now in separate source files.
5936 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
5939 *) Use a less unusual form of the Miller-Rabin primality test (it used
5940 a binary algorithm for exponentiation integrated into the Miller-Rabin
5941 loop, our standard modexp algorithms are faster).
5944 *) Support for the EBCDIC character set completed.
5945 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
5947 *) Source code cleanups: use const where appropriate, eliminate casts,
5948 use void * instead of char * in lhash.
5951 *) Bugfix: ssl3_send_server_key_exchange was not restartable
5952 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
5953 this the server could overwrite ephemeral keys that the client
5957 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
5958 using 50 iterations of the Rabin-Miller test.
5960 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
5961 iterations of the Rabin-Miller test as required by the appendix
5962 to FIPS PUB 186[-1]) instead of DSA_is_prime.
5963 As BN_is_prime_fasttest includes trial division, DSA parameter
5964 generation becomes much faster.
5966 This implies a change for the callback functions in DSA_is_prime
5967 and DSA_generate_parameters: The callback function is called once
5968 for each positive witness in the Rabin-Miller test, not just
5969 occasionally in the inner loop; and the parameters to the
5970 callback function now provide an iteration count for the outer
5971 loop rather than for the current invocation of the inner loop.
5972 DSA_generate_parameters additionally can call the callback
5973 function with an 'iteration count' of -1, meaning that a
5974 candidate has passed the trial division test (when q is generated
5975 from an application-provided seed, trial division is skipped).
5978 *) New function BN_is_prime_fasttest that optionally does trial
5979 division before starting the Rabin-Miller test and has
5980 an additional BN_CTX * argument (whereas BN_is_prime always
5981 has to allocate at least one BN_CTX).
5982 'callback(1, -1, cb_arg)' is called when a number has passed the
5983 trial division stage.
5986 *) Fix for bug in CRL encoding. The validity dates weren't being handled
5990 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
5993 *) New function BN_pseudo_rand().
5996 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
5997 bignum version of BN_from_montgomery() with the working code from
5998 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
6002 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
6003 made it impossible to use the same SSL_SESSION data structure in
6004 SSL2 clients in multiple threads.
6007 *) The return value of RAND_load_file() no longer counts bytes obtained
6008 by stat(). RAND_load_file(..., -1) is new and uses the complete file
6009 to seed the PRNG (previously an explicit byte count was required).
6010 [Ulf Möller, Bodo Möller]
6012 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
6013 used (char *) instead of (void *) and had casts all over the place.
6016 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
6019 *) Retain source code compatibility for BN_prime_checks macro:
6020 BN_is_prime(..., BN_prime_checks, ...) now uses
6021 BN_prime_checks_for_size to determine the appropriate number of
6022 Rabin-Miller iterations.
6025 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6026 DH_CHECK_P_NOT_SAFE_PRIME.
6027 (Check if this is true? OpenPGP calls them "strong".)
6030 *) Merge the functionality of "dh" and "gendh" programs into a new program
6031 "dhparam". The old programs are retained for now but will handle DH keys
6032 (instead of parameters) in future.
6035 *) Make the ciphers, s_server and s_client programs check the return values
6036 when a new cipher list is set.
6039 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6040 ciphers. Before when the 56bit ciphers were enabled the sorting was
6043 The syntax for the cipher sorting has been extended to support sorting by
6044 cipher-strength (using the strength_bits hard coded in the tables).
6045 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6047 Fix a bug in the cipher-command parser: when supplying a cipher command
6048 string with an "undefined" symbol (neither command nor alphanumeric
6049 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6050 an error is flagged.
6052 Due to the strength-sorting extension, the code of the
6053 ssl_create_cipher_list() function was completely rearranged. I hope that
6054 the readability was also increased :-)
6055 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6057 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6058 for the first serial number and places 2 in the serial number file. This
6059 avoids problems when the root CA is created with serial number zero and
6060 the first user certificate has the same issuer name and serial number
6064 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6065 the new code. Add documentation for this stuff.
6068 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6069 X509_*() to X509at_*() on the grounds that they don't handle X509
6070 structures and behave in an analagous way to the X509v3 functions:
6071 they shouldn't be called directly but wrapper functions should be used
6074 So we also now have some wrapper functions that call the X509at functions
6075 when passed certificate requests. (TO DO: similar things can be done with
6076 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6077 things. Some of these need some d2i or i2d and print functionality
6078 because they handle more complex structures.)
6081 *) Add missing #ifndefs that caused missing symbols when building libssl
6082 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6083 NO_RSA in ssl/s2*.c.
6084 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6086 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6087 has a return value which indicates the quality of the random data
6088 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6089 error queue. New function RAND_pseudo_bytes() generates output that is
6090 guaranteed to be unique but not unpredictable. RAND_add is like
6091 RAND_seed, but takes an extra argument for an entropy estimate
6092 (RAND_seed always assumes full entropy).
6095 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6096 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6097 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6098 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6099 false-positive rate of at most 2^-80 for random input.
6102 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6105 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6106 in the 0.9.5 release), this returns the chain
6107 from an X509_CTX structure with a dup of the stack and all
6108 the X509 reference counts upped: so the stack will exist
6109 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6112 Also make SSL_SESSION_print() print out the verify return
6116 *) Add manpage for the pkcs12 command. Also change the default
6117 behaviour so MAC iteration counts are used unless the new
6118 -nomaciter option is used. This improves file security and
6119 only older versions of MSIE (4.0 for example) need it.
6122 *) Honor the no-xxx Configure options when creating .DEF files.
6125 *) Add PKCS#10 attributes to field table: challengePassword,
6126 unstructuredName and unstructuredAddress. These are taken from
6127 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6128 international characters are used.
6130 More changes to X509_ATTRIBUTE code: allow the setting of types
6131 based on strings. Remove the 'loc' parameter when adding
6132 attributes because these will be a SET OF encoding which is sorted
6136 *) Initial changes to the 'req' utility to allow request generation
6137 automation. This will allow an application to just generate a template
6138 file containing all the field values and have req construct the
6141 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6142 used all over the place including certificate requests and PKCS#7
6143 structures. They are currently handled manually where necessary with
6144 some primitive wrappers for PKCS#7. The new functions behave in a
6145 manner analogous to the X509 extension functions: they allow
6146 attributes to be looked up by NID and added.
6148 Later something similar to the X509V3 code would be desirable to
6149 automatically handle the encoding, decoding and printing of the
6150 more complex types. The string types like challengePassword can
6151 be handled by the string table functions.
6153 Also modified the multi byte string table handling. Now there is
6154 a 'global mask' which masks out certain types. The table itself
6155 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6156 is useful when for example there is only one permissible type
6157 (as in countryName) and using the mask might result in no valid
6161 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6162 SSL_get_peer_finished to allow applications to obtain the latest
6163 Finished messages sent to the peer or expected from the peer,
6164 respectively. (SSL_get_peer_finished is usually the Finished message
6165 actually received from the peer, otherwise the protocol will be aborted.)
6167 As the Finished message are message digests of the complete handshake
6168 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6169 be used for external authentication procedures when the authentication
6170 provided by SSL/TLS is not desired or is not enough.
6173 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6174 the host supports BWX extension and if Compaq C is present on the
6175 $PATH. Just exploiting of the BWX extension results in 20-30%
6176 performance kick for some algorithms, e.g. DES and RC4 to mention
6177 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6181 *) Add support for MS "fast SGC". This is arguably a violation of the
6182 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6183 weak crypto and after checking the certificate is SGC a second one
6184 with strong crypto. MS SGC stops the first handshake after receiving
6185 the server certificate message and sends a second client hello. Since
6186 a server will typically do all the time consuming operations before
6187 expecting any further messages from the client (server key exchange
6188 is the most expensive) there is little difference between the two.
6190 To get OpenSSL to support MS SGC we have to permit a second client
6191 hello message after we have sent server done. In addition we have to
6192 reset the MAC if we do get this second client hello.
6195 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6196 if a DER encoded private key is RSA or DSA traditional format. Changed
6197 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6198 format DER encoded private key. Newer code should use PKCS#8 format which
6199 has the key type encoded in the ASN1 structure. Added DER private key
6200 support to pkcs8 application.
6203 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6204 ciphersuites has been selected (as required by the SSL 3/TLS 1
6205 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6206 is set, we interpret this as a request to violate the specification
6207 (the worst that can happen is a handshake failure, and 'correct'
6208 behaviour would result in a handshake failure anyway).
6211 *) In SSL_CTX_add_session, take into account that there might be multiple
6212 SSL_SESSION structures with the same session ID (e.g. when two threads
6213 concurrently obtain them from an external cache).
6214 The internal cache can handle only one SSL_SESSION with a given ID,
6215 so if there's a conflict, we now throw out the old one to achieve
6219 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6220 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6221 some routines that use cipher OIDs: some ciphers do not have OIDs
6222 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6226 *) Simplify the trust setting structure and code. Now we just have
6227 two sequences of OIDs for trusted and rejected settings. These will
6228 typically have values the same as the extended key usage extension
6229 and any application specific purposes.
6231 The trust checking code now has a default behaviour: it will just
6232 check for an object with the same NID as the passed id. Functions can
6233 be provided to override either the default behaviour or the behaviour
6234 for a given id. SSL client, server and email already have functions
6235 in place for compatibility: they check the NID and also return "trusted"
6236 if the certificate is self signed.
6239 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6240 traditional format into an EVP_PKEY structure.
6243 *) Add a password callback function PEM_cb() which either prompts for
6244 a password if usr_data is NULL or otherwise assumes it is a null
6245 terminated password. Allow passwords to be passed on command line
6246 environment or config files in a few more utilities.
6249 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6250 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6251 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6252 Update documentation.
6255 *) Support for ASN1 "NULL" type. This could be handled before by using
6256 ASN1_TYPE but there wasn't any function that would try to read a NULL
6257 and produce an error if it couldn't. For compatibility we also have
6258 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6259 don't allocate anything because they don't need to.
6262 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6264 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6266 *) Rebuild of the memory allocation routines used by OpenSSL code and
6267 possibly others as well. The purpose is to make an interface that
6268 provide hooks so anyone can build a separate set of allocation and
6269 deallocation routines to be used by OpenSSL, for example memory
6270 pool implementations, or something else, which was previously hard
6271 since Malloc(), Realloc() and Free() were defined as macros having
6272 the values malloc, realloc and free, respectively (except for Win32
6273 compilations). The same is provided for memory debugging code.
6274 OpenSSL already comes with functionality to find memory leaks, but
6275 this gives people a chance to debug other memory problems.
6277 With these changes, a new set of functions and macros have appeared:
6279 CRYPTO_set_mem_debug_functions() [F]
6280 CRYPTO_get_mem_debug_functions() [F]
6281 CRYPTO_dbg_set_options() [F]
6282 CRYPTO_dbg_get_options() [F]
6283 CRYPTO_malloc_debug_init() [M]
6285 The memory debug functions are NULL by default, unless the library
6286 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6287 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6288 gives the standard debugging functions that come with OpenSSL) or
6289 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6290 provided by the library user) must be used. When the standard
6291 debugging functions are used, CRYPTO_dbg_set_options can be used to
6292 request additional information:
6293 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6294 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6296 Also, things like CRYPTO_set_mem_functions will always give the
6297 expected result (the new set of functions is used for allocation
6298 and deallocation) at all times, regardless of platform and compiler
6301 To finish it up, some functions that were never use in any other
6302 way than through macros have a new API and new semantic:
6305 CRYPTO_dbg_realloc()
6308 All macros of value have retained their old syntax.
6309 [Richard Levitte and Bodo Moeller]
6311 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6312 ordering of SMIMECapabilities wasn't in "strength order" and there
6313 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6317 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6318 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6319 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6321 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6322 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6323 functionality to handle multipart/signed properly) and a utility
6324 called 'smime' to call all this stuff. This is based on code I
6325 originally wrote for Celo who have kindly allowed it to be
6326 included in OpenSSL.
6329 *) Add variants des_set_key_checked and des_set_key_unchecked of
6330 des_set_key (aka des_key_sched). Global variable des_check_key
6331 decides which of these is called by des_set_key; this way
6332 des_check_key behaves as it always did, but applications and
6333 the library itself, which was buggy for des_check_key == 1,
6334 have a cleaner way to pick the version they need.
6337 *) New function PKCS12_newpass() which changes the password of a
6341 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6342 dynamic mix. In both cases the ids can be used as an index into the
6343 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6344 functions so they accept a list of the field values and the
6345 application doesn't need to directly manipulate the X509_TRUST
6349 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6353 *) Modify the way the V3 extension code looks up extensions. This now
6354 works in a similar way to the object code: we have some "standard"
6355 extensions in a static table which is searched with OBJ_bsearch()
6356 and the application can add dynamic ones if needed. The file
6357 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6358 updated whenever a new extension is added to the core code and kept
6359 in ext_nid order. There is a simple program 'tabtest.c' which checks
6360 this. New extensions are not added too often so this file can readily
6361 be maintained manually.
6363 There are two big advantages in doing things this way. The extensions
6364 can be looked up immediately and no longer need to be "added" using
6365 X509V3_add_standard_extensions(): this function now does nothing.
6366 [Side note: I get *lots* of email saying the extension code doesn't
6367 work because people forget to call this function]
6368 Also no dynamic allocation is done unless new extensions are added:
6369 so if we don't add custom extensions there is no need to call
6370 X509V3_EXT_cleanup().
6373 *) Modify enc utility's salting as follows: make salting the default. Add a
6374 magic header, so unsalted files fail gracefully instead of just decrypting
6375 to garbage. This is because not salting is a big security hole, so people
6376 should be discouraged from doing it.
6379 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6380 digest to be passed on the command line but it only used this
6381 parameter when signing a certificate. Modified so all relevant
6382 operations are affected by the digest parameter including the
6383 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6384 DSA key was used because it didn't fix the digest.
6387 *) Initial certificate chain verify code. Currently tests the untrusted
6388 certificates for consistency with the verify purpose (which is set
6389 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6391 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6392 this is because it will reject chains with invalid extensions whereas
6393 every previous version of OpenSSL and SSLeay made no checks at all.
6395 Trust code: checks the root CA for the relevant trust settings. Trust
6396 settings have an initial value consistent with the verify purpose: e.g.
6397 if the verify purpose is for SSL client use it expects the CA to be
6398 trusted for SSL client use. However the default value can be changed to
6399 permit custom trust settings: one example of this would be to only trust
6400 certificates from a specific "secure" set of CAs.
6402 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6403 which should be used for version portability: especially since the
6404 verify structure is likely to change more often now.
6406 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6407 to set them. If not set then assume SSL clients will verify SSL servers
6410 Two new options to the verify program: -untrusted allows a set of
6411 untrusted certificates to be passed in and -purpose which sets the
6412 intended purpose of the certificate. If a purpose is set then the
6413 new chain verify code is used to check extension consistency.
6416 *) Support for the authority information access extension.
6419 *) Modify RSA and DSA PEM read routines to transparently handle
6420 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6421 public keys in a format compatible with certificate
6422 SubjectPublicKeyInfo structures. Unfortunately there were already
6423 functions called *_PublicKey_* which used various odd formats so
6424 these are retained for compatibility: however the DSA variants were
6425 never in a public release so they have been deleted. Changed dsa/rsa
6426 utilities to handle the new format: note no releases ever handled public
6427 keys so we should be OK.
6429 The primary motivation for this change is to avoid the same fiasco
6430 that dogs private keys: there are several incompatible private key
6431 formats some of which are standard and some OpenSSL specific and
6432 require various evil hacks to allow partial transparent handling and
6433 even then it doesn't work with DER formats. Given the option anything
6434 other than PKCS#8 should be dumped: but the other formats have to
6435 stay in the name of compatibility.
6437 With public keys and the benefit of hindsight one standard format
6438 is used which works with EVP_PKEY, RSA or DSA structures: though
6439 it clearly returns an error if you try to read the wrong kind of key.
6441 Added a -pubkey option to the 'x509' utility to output the public key.
6442 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6443 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6444 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6445 that do the same as the EVP_PKEY_assign_*() except they up the
6446 reference count of the added key (they don't "swallow" the
6450 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6451 CRLs would fail if the file contained no certificates or no CRLs:
6452 added a new function to read in both types and return the number
6453 read: this means that if none are read it will be an error. The
6454 DER versions of the certificate and CRL reader would always fail
6455 because it isn't possible to mix certificates and CRLs in DER format
6456 without choking one or the other routine. Changed this to just read
6457 a certificate: this is the best we can do. Also modified the code
6458 in apps/verify.c to take notice of return codes: it was previously
6459 attempting to read in certificates from NULL pointers and ignoring
6460 any errors: this is one reason why the cert and CRL reader seemed
6461 to work. It doesn't check return codes from the default certificate
6462 routines: these may well fail if the certificates aren't installed.
6465 *) Code to support otherName option in GeneralName.
6468 *) First update to verify code. Change the verify utility
6469 so it warns if it is passed a self signed certificate:
6470 for consistency with the normal behaviour. X509_verify
6471 has been modified to it will now verify a self signed
6472 certificate if *exactly* the same certificate appears
6473 in the store: it was previously impossible to trust a
6474 single self signed certificate. This means that:
6475 openssl verify ss.pem
6476 now gives a warning about a self signed certificate but
6477 openssl verify -CAfile ss.pem ss.pem
6481 *) For servers, store verify_result in SSL_SESSION data structure
6482 (and add it to external session representation).
6483 This is needed when client certificate verifications fails,
6484 but an application-provided verification callback (set by
6485 SSL_CTX_set_cert_verify_callback) allows accepting the session
6486 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
6487 but returns 1): When the session is reused, we have to set
6488 ssl->verify_result to the appropriate error code to avoid
6490 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
6492 *) Fix a bug in the new PKCS#7 code: it didn't consider the
6493 case in PKCS7_dataInit() where the signed PKCS7 structure
6494 didn't contain any existing data because it was being created.
6495 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
6497 *) Add a salt to the key derivation routines in enc.c. This
6498 forms the first 8 bytes of the encrypted file. Also add a
6499 -S option to allow a salt to be input on the command line.
6502 *) New function X509_cmp(). Oddly enough there wasn't a function
6503 to compare two certificates. We do this by working out the SHA1
6504 hash and comparing that. X509_cmp() will be needed by the trust
6508 *) SSL_get1_session() is like SSL_get_session(), but increments
6509 the reference count in the SSL_SESSION returned.
6510 [Geoff Thorpe <geoff@eu.c2.net>]
6512 *) Fix for 'req': it was adding a null to request attributes.
6513 Also change the X509_LOOKUP and X509_INFO code to handle
6514 certificate auxiliary information.
6517 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
6521 *) Add the possibility to add extra information to the memory leak
6522 detecting output, to form tracebacks, showing from where each
6523 allocation was originated: CRYPTO_push_info("constant string") adds
6524 the string plus current file name and line number to a per-thread
6525 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
6526 is like calling CYRPTO_pop_info() until the stack is empty.
6527 Also updated memory leak detection code to be multi-thread-safe.
6530 *) Add options -text and -noout to pkcs7 utility and delete the
6531 encryption options which never did anything. Update docs.
6534 *) Add options to some of the utilities to allow the pass phrase
6535 to be included on either the command line (not recommended on
6536 OSes like Unix) or read from the environment. Update the
6537 manpages and fix a few bugs.
6540 *) Add a few manpages for some of the openssl commands.
6543 *) Fix the -revoke option in ca. It was freeing up memory twice,
6544 leaking and not finding already revoked certificates.
6547 *) Extensive changes to support certificate auxiliary information.
6548 This involves the use of X509_CERT_AUX structure and X509_AUX
6549 functions. An X509_AUX function such as PEM_read_X509_AUX()
6550 can still read in a certificate file in the usual way but it
6551 will also read in any additional "auxiliary information". By
6552 doing things this way a fair degree of compatibility can be
6553 retained: existing certificates can have this information added
6554 using the new 'x509' options.
6556 Current auxiliary information includes an "alias" and some trust
6557 settings. The trust settings will ultimately be used in enhanced
6558 certificate chain verification routines: currently a certificate
6559 can only be trusted if it is self signed and then it is trusted
6563 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
6564 The problem was that one of the replacement routines had not been working
6565 since SSLeay releases. For now the offending routine has been replaced
6566 with non-optimised assembler. Even so, this now gives around 95%
6567 performance improvement for 1024 bit RSA signs.
6570 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
6571 handling. Most clients have the effective key size in bits equal to
6572 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
6573 A few however don't do this and instead use the size of the decrypted key
6574 to determine the RC2 key length and the AlgorithmIdentifier to determine
6575 the effective key length. In this case the effective key length can still
6576 be 40 bits but the key length can be 168 bits for example. This is fixed
6577 by manually forcing an RC2 key into the EVP_PKEY structure because the
6578 EVP code can't currently handle unusual RC2 key sizes: it always assumes
6579 the key length and effective key length are equal.
6582 *) Add a bunch of functions that should simplify the creation of
6583 X509_NAME structures. Now you should be able to do:
6584 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
6585 and have it automatically work out the correct field type and fill in
6586 the structures. The more adventurous can try:
6587 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
6588 and it will (hopefully) work out the correct multibyte encoding.
6591 *) Change the 'req' utility to use the new field handling and multibyte
6592 copy routines. Before the DN field creation was handled in an ad hoc
6593 way in req, ca, and x509 which was rather broken and didn't support
6594 BMPStrings or UTF8Strings. Since some software doesn't implement
6595 BMPStrings or UTF8Strings yet, they can be enabled using the config file
6596 using the dirstring_type option. See the new comment in the default
6597 openssl.cnf for more info.
6600 *) Make crypto/rand/md_rand.c more robust:
6601 - Assure unique random numbers after fork().
6602 - Make sure that concurrent threads access the global counter and
6603 md serializably so that we never lose entropy in them
6604 or use exactly the same state in multiple threads.
6605 Access to the large state is not always serializable because
6606 the additional locking could be a performance killer, and
6607 md should be large enough anyway.
6610 *) New file apps/app_rand.c with commonly needed functionality
6611 for handling the random seed file.
6613 Use the random seed file in some applications that previously did not:
6615 dsaparam -genkey (which also ignored its '-rand' option),
6618 x509 (when signing).
6619 Except on systems with /dev/urandom, it is crucial to have a random
6620 seed file at least for key creation, DSA signing, and for DH exchanges;
6621 for RSA signatures we could do without one.
6623 gendh and gendsa (unlike genrsa) used to read only the first byte
6624 of each file listed in the '-rand' option. The function as previously
6625 found in genrsa is now in app_rand.c and is used by all programs
6626 that support '-rand'.
6629 *) In RAND_write_file, use mode 0600 for creating files;
6630 don't just chmod when it may be too late.
6633 *) Report an error from X509_STORE_load_locations
6634 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
6637 *) New function ASN1_mbstring_copy() this copies a string in either
6638 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
6639 into an ASN1_STRING type. A mask of permissible types is passed
6640 and it chooses the "minimal" type to use or an error if not type
6644 *) Add function equivalents to the various macros in asn1.h. The old
6645 macros are retained with an M_ prefix. Code inside the library can
6646 use the M_ macros. External code (including the openssl utility)
6647 should *NOT* in order to be "shared library friendly".
6650 *) Add various functions that can check a certificate's extensions
6651 to see if it usable for various purposes such as SSL client,
6652 server or S/MIME and CAs of these types. This is currently
6653 VERY EXPERIMENTAL but will ultimately be used for certificate chain
6654 verification. Also added a -purpose flag to x509 utility to
6655 print out all the purposes.
6658 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
6662 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
6663 for, obtain and decode and extension and obtain its critical flag.
6664 This allows all the necessary extension code to be handled in a
6665 single function call.
6668 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
6669 platforms. See crypto/rc4/rc4_enc.c for further details.
6672 *) New -noout option to asn1parse. This causes no output to be produced
6673 its main use is when combined with -strparse and -out to extract data
6674 from a file (which may not be in ASN.1 format).
6677 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
6678 when producing the local key id.
6679 [Richard Levitte <levitte@stacken.kth.se>]
6681 *) New option -dhparam in s_server. This allows a DH parameter file to be
6682 stated explicitly. If it is not stated then it tries the first server
6683 certificate file. The previous behaviour hard coded the filename
6687 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
6688 a public key to be input or output. For example:
6689 openssl rsa -in key.pem -pubout -out pubkey.pem
6690 Also added necessary DSA public key functions to handle this.
6693 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
6694 in the message. This was handled by allowing
6695 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
6696 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
6698 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
6699 to the end of the strings whereas this didn't. This would cause problems
6700 if strings read with d2i_ASN1_bytes() were later modified.
6701 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
6703 *) Fix for base64 decode bug. When a base64 bio reads only one line of
6704 data and it contains EOF it will end up returning an error. This is
6705 caused by input 46 bytes long. The cause is due to the way base64
6706 BIOs find the start of base64 encoded data. They do this by trying a
6707 trial decode on each line until they find one that works. When they
6708 do a flag is set and it starts again knowing it can pass all the
6709 data directly through the decoder. Unfortunately it doesn't reset
6710 the context it uses. This means that if EOF is reached an attempt
6711 is made to pass two EOFs through the context and this causes the
6712 resulting error. This can also cause other problems as well. As is
6713 usual with these problems it takes *ages* to find and the fix is
6714 trivial: move one line.
6715 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
6717 *) Ugly workaround to get s_client and s_server working under Windows. The
6718 old code wouldn't work because it needed to select() on sockets and the
6719 tty (for keypresses and to see if data could be written). Win32 only
6720 supports select() on sockets so we select() with a 1s timeout on the
6721 sockets and then see if any characters are waiting to be read, if none
6722 are present then we retry, we also assume we can always write data to
6723 the tty. This isn't nice because the code then blocks until we've
6724 received a complete line of data and it is effectively polling the
6725 keyboard at 1s intervals: however it's quite a bit better than not
6726 working at all :-) A dedicated Windows application might handle this
6727 with an event loop for example.
6730 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
6731 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
6732 will be called when RSA_sign() and RSA_verify() are used. This is useful
6733 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
6734 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
6735 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
6736 This necessitated the support of an extra signature type NID_md5_sha1
6737 for SSL signatures and modifications to the SSL library to use it instead
6738 of calling RSA_public_decrypt() and RSA_private_encrypt().
6741 *) Add new -verify -CAfile and -CApath options to the crl program, these
6742 will lookup a CRL issuers certificate and verify the signature in a
6743 similar way to the verify program. Tidy up the crl program so it
6744 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
6745 less strict. It will now permit CRL extensions even if it is not
6746 a V2 CRL: this will allow it to tolerate some broken CRLs.
6749 *) Initialize all non-automatic variables each time one of the openssl
6750 sub-programs is started (this is necessary as they may be started
6751 multiple times from the "OpenSSL>" prompt).
6752 [Lennart Bang, Bodo Moeller]
6754 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
6755 removing all other RSA functionality (this is what NO_RSA does). This
6756 is so (for example) those in the US can disable those operations covered
6757 by the RSA patent while allowing storage and parsing of RSA keys and RSA
6761 *) Non-copying interface to BIO pairs.
6762 (still largely untested)
6765 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
6766 ASCII string. This was handled independently in various places before.
6769 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
6770 UTF8 strings a character at a time.
6773 *) Use client_version from client hello to select the protocol
6774 (s23_srvr.c) and for RSA client key exchange verification
6775 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
6778 *) Add various utility functions to handle SPKACs, these were previously
6779 handled by poking round in the structure internals. Added new function
6780 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
6781 print, verify and generate SPKACs. Based on an original idea from
6782 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
6785 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
6788 *) Allow the config file extension section to be overwritten on the
6789 command line. Based on an original idea from Massimiliano Pala
6790 <madwolf@comune.modena.it>. The new option is called -extensions
6791 and can be applied to ca, req and x509. Also -reqexts to override
6792 the request extensions in req and -crlexts to override the crl extensions
6796 *) Add new feature to the SPKAC handling in ca. Now you can include
6797 the same field multiple times by preceding it by "XXXX." for example:
6800 this is the same syntax as used in the req config file.
6803 *) Allow certificate extensions to be added to certificate requests. These
6804 are specified in a 'req_extensions' option of the req section of the
6805 config file. They can be printed out with the -text option to req but
6806 are otherwise ignored at present.
6809 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
6810 data read consists of only the final block it would not decrypted because
6811 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
6812 A misplaced 'break' also meant the decrypted final block might not be
6813 copied until the next read.
6816 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
6817 a few extra parameters to the DH structure: these will be useful if
6818 for example we want the value of 'q' or implement X9.42 DH.
6821 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
6822 provides hooks that allow the default DSA functions or functions on a
6823 "per key" basis to be replaced. This allows hardware acceleration and
6824 hardware key storage to be handled without major modification to the
6825 library. Also added low level modexp hooks and CRYPTO_EX structure and
6826 associated functions.
6829 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
6830 as "read only": it can't be written to and the buffer it points to will
6831 not be freed. Reading from a read only BIO is much more efficient than
6832 a normal memory BIO. This was added because there are several times when
6833 an area of memory needs to be read from a BIO. The previous method was
6834 to create a memory BIO and write the data to it, this results in two
6835 copies of the data and an O(n^2) reading algorithm. There is a new
6836 function BIO_new_mem_buf() which creates a read only memory BIO from
6837 an area of memory. Also modified the PKCS#7 routines to use read only
6841 *) Bugfix: ssl23_get_client_hello did not work properly when called in
6842 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
6843 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
6844 but a retry condition occured while trying to read the rest.
6847 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
6848 NID_pkcs7_encrypted by default: this was wrong since this should almost
6849 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
6850 the encrypted data type: this is a more sensible place to put it and it
6851 allows the PKCS#12 code to be tidied up that duplicated this
6855 *) Changed obj_dat.pl script so it takes its input and output files on
6856 the command line. This should avoid shell escape redirection problems
6860 *) Initial support for certificate extension requests, these are included
6861 in things like Xenroll certificate requests. Included functions to allow
6862 extensions to be obtained and added.
6865 *) -crlf option to s_client and s_server for sending newlines as
6866 CRLF (as required by many protocols).
6869 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
6871 *) Install libRSAglue.a when OpenSSL is built with RSAref.
6872 [Ralf S. Engelschall]
6874 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
6875 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
6877 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
6881 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
6882 DH parameters/keys (q is lost during that conversion, but the resulting
6883 DH parameters contain its length).
6885 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
6886 much faster than DH_generate_parameters (which creates parameters
6887 where p = 2*q + 1), and also the smaller q makes DH computations
6888 much more efficient (160-bit exponentiation instead of 1024-bit
6889 exponentiation); so this provides a convenient way to support DHE
6890 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
6891 utter importance to use
6892 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
6894 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
6895 when such DH parameters are used, because otherwise small subgroup
6896 attacks may become possible!
6899 *) Avoid memory leak in i2d_DHparams.
6902 *) Allow the -k option to be used more than once in the enc program:
6903 this allows the same encrypted message to be read by multiple recipients.
6906 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
6907 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
6908 it will always use the numerical form of the OID, even if it has a short
6912 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
6913 method only got called if p,q,dmp1,dmq1,iqmp components were present,
6914 otherwise bn_mod_exp was called. In the case of hardware keys for example
6915 no private key components need be present and it might store extra data
6916 in the RSA structure, which cannot be accessed from bn_mod_exp.
6917 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
6918 private key operations.
6921 *) Added support for SPARC Linux.
6924 *) pem_password_cb function type incompatibly changed from
6925 typedef int pem_password_cb(char *buf, int size, int rwflag);
6927 ....(char *buf, int size, int rwflag, void *userdata);
6928 so that applications can pass data to their callbacks:
6929 The PEM[_ASN1]_{read,write}... functions and macros now take an
6930 additional void * argument, which is just handed through whenever
6931 the password callback is called.
6932 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
6934 New function SSL_CTX_set_default_passwd_cb_userdata.
6936 Compatibility note: As many C implementations push function arguments
6937 onto the stack in reverse order, the new library version is likely to
6938 interoperate with programs that have been compiled with the old
6939 pem_password_cb definition (PEM_whatever takes some data that
6940 happens to be on the stack as its last argument, and the callback
6941 just ignores this garbage); but there is no guarantee whatsoever that
6944 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
6945 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
6946 problems not only on Windows, but also on some Unix platforms.
6947 To avoid problematic command lines, these definitions are now in an
6948 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
6949 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
6952 *) MIPS III/IV assembler module is reimplemented.
6955 *) More DES library cleanups: remove references to srand/rand and
6956 delete an unused file.
6959 *) Add support for the the free Netwide assembler (NASM) under Win32,
6960 since not many people have MASM (ml) and it can be hard to obtain.
6961 This is currently experimental but it seems to work OK and pass all
6962 the tests. Check out INSTALL.W32 for info.
6965 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
6966 without temporary keys kept an extra copy of the server key,
6967 and connections with temporary keys did not free everything in case
6971 *) New function RSA_check_key and new openssl rsa option -check
6972 for verifying the consistency of RSA keys.
6973 [Ulf Moeller, Bodo Moeller]
6975 *) Various changes to make Win32 compile work:
6976 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
6977 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
6978 comparison" warnings.
6979 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
6982 *) Add a debugging option to PKCS#5 v2 key generation function: when
6983 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
6984 derived keys are printed to stderr.
6987 *) Copy the flags in ASN1_STRING_dup().
6988 [Roman E. Pavlov <pre@mo.msk.ru>]
6990 *) The x509 application mishandled signing requests containing DSA
6991 keys when the signing key was also DSA and the parameters didn't match.
6993 It was supposed to omit the parameters when they matched the signing key:
6994 the verifying software was then supposed to automatically use the CA's
6995 parameters if they were absent from the end user certificate.
6997 Omitting parameters is no longer recommended. The test was also
6998 the wrong way round! This was probably due to unusual behaviour in
6999 EVP_cmp_parameters() which returns 1 if the parameters match.
7000 This meant that parameters were omitted when they *didn't* match and
7001 the certificate was useless. Certificates signed with 'ca' didn't have
7003 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
7005 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
7006 The interface is as follows:
7007 Applications can use
7008 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
7009 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
7010 "off" is now the default.
7011 The library internally uses
7012 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
7013 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
7014 to disable memory-checking temporarily.
7016 Some inconsistent states that previously were possible (and were
7017 even the default) are now avoided.
7019 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
7020 with each memory chunk allocated; this is occasionally more helpful
7021 than just having a counter.
7023 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7025 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7029 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7030 which largely parallels "options", but is for changing API behaviour,
7031 whereas "options" are about protocol behaviour.
7032 Initial "mode" flags are:
7034 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7035 a single record has been written.
7036 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7037 retries use the same buffer location.
7038 (But all of the contents must be
7042 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7045 *) Fix problems with no-hmac etc.
7046 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7048 *) New functions RSA_get_default_method(), RSA_set_method() and
7049 RSA_get_method(). These allows replacement of RSA_METHODs without having
7050 to mess around with the internals of an RSA structure.
7053 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7054 Also really enable memory leak checks in openssl.c and in some
7056 [Chad C. Mulligan, Bodo Moeller]
7058 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7059 up the length of negative integers. This has now been simplified to just
7060 store the length when it is first determined and use it later, rather
7061 than trying to keep track of where data is copied and updating it to
7063 [Steve Henson, reported by Brien Wheeler
7064 <bwheeler@authentica-security.com>]
7066 *) Add a new function PKCS7_signatureVerify. This allows the verification
7067 of a PKCS#7 signature but with the signing certificate passed to the
7068 function itself. This contrasts with PKCS7_dataVerify which assumes the
7069 certificate is present in the PKCS#7 structure. This isn't always the
7070 case: certificates can be omitted from a PKCS#7 structure and be
7071 distributed by "out of band" means (such as a certificate database).
7074 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7075 function prototypes in pem.h, also change util/mkdef.pl to add the
7076 necessary function names.
7079 *) mk1mf.pl (used by Windows builds) did not properly read the
7080 options set by Configure in the top level Makefile, and Configure
7081 was not even able to write more than one option correctly.
7082 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7085 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7086 file to be loaded from a BIO or FILE pointer. The BIO version will
7087 for example allow memory BIOs to contain config info.
7090 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7091 Whoever hopes to achieve shared-library compatibility across versions
7092 must use this, not the compile-time macro.
7093 (Exercise 0.9.4: Which is the minimum library version required by
7095 Note: All this applies only to multi-threaded programs, others don't
7099 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7100 through a BIO pair triggered the default case, i.e.
7101 SSLerr(...,SSL_R_UNKNOWN_STATE).
7104 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7105 can use the SSL library even if none of the specific BIOs is
7109 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7110 for the encoded length.
7111 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7113 *) Add initial documentation of the X509V3 functions.
7116 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7117 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7118 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7119 secure PKCS#8 private key format with a high iteration count.
7122 *) Fix determination of Perl interpreter: A perl or perl5
7123 _directory_ in $PATH was also accepted as the interpreter.
7124 [Ralf S. Engelschall]
7126 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7127 wrong with it but it was very old and did things like calling
7128 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7132 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7133 to use the new extension code.
7136 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7137 with macros. This should make it easier to change their form, add extra
7138 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7142 *) Add to configuration table a new entry that can specify an alternative
7143 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7144 according to Mark Crispin <MRC@Panda.COM>.
7148 *) DES CBC did not update the IV. Weird.
7151 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7152 Changing the behaviour of the former might break existing programs --
7153 where IV updating is needed, des_ncbc_encrypt can be used.
7156 *) When bntest is run from "make test" it drives bc to check its
7157 calculations, as well as internally checking them. If an internal check
7158 fails, it needs to cause bc to give a non-zero result or make test carries
7159 on without noticing the failure. Fixed.
7162 *) DES library cleanups.
7165 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7166 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7167 ciphers. NOTE: although the key derivation function has been verified
7168 against some published test vectors it has not been extensively tested
7169 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7173 *) Instead of "mkdir -p", which is not fully portable, use new
7174 Perl script "util/mkdir-p.pl".
7177 *) Rewrite the way password based encryption (PBE) is handled. It used to
7178 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7179 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7180 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7181 the 'parameter' field of the AlgorithmIdentifier is passed to the
7182 underlying key generation function so it must do its own ASN1 parsing.
7183 This has also changed the EVP_PBE_CipherInit() function which now has a
7184 'parameter' argument instead of literal salt and iteration count values
7185 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7188 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7189 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7190 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7191 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7192 value was just used as a "magic string" and not used directly its
7193 value doesn't matter.
7196 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7200 *) "linux-sparc64" configuration (ultrapenguin).
7201 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7202 "linux-sparc" configuration.
7203 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7205 *) config now generates no-xxx options for missing ciphers.
7208 *) Support the EBCDIC character set (work in progress).
7209 File ebcdic.c not yet included because it has a different license.
7210 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7212 *) Support BS2000/OSD-POSIX.
7213 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7215 *) Make callbacks for key generation use void * instead of char *.
7218 *) Make S/MIME samples compile (not yet tested).
7221 *) Additional typesafe stacks.
7224 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7228 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7230 *) New configuration variant "sco5-gcc".
7232 *) Updated some demos.
7233 [Sean O Riordain, Wade Scholine]
7235 *) Add missing BIO_free at exit of pkcs12 application.
7238 *) Fix memory leak in conf.c.
7241 *) Updates for Win32 to assembler version of MD5.
7244 *) Set #! path to perl in apps/der_chop to where we found it
7245 instead of using a fixed path.
7248 *) SHA library changes for irix64-mips4-cc.
7251 *) Improvements for VMS support.
7255 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7257 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7258 This also avoids the problems with SC4.2 and unpatched SC5.
7259 [Andy Polyakov <appro@fy.chalmers.se>]
7261 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7262 These are required because of the typesafe stack would otherwise break
7263 existing code. If old code used a structure member which used to be STACK
7264 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7265 sk_num or sk_value it would produce an error because the num, data members
7266 are not present in STACK_OF. Now it just produces a warning. sk_set
7267 replaces the old method of assigning a value to sk_value
7268 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7269 that does this will no longer work (and should use sk_set instead) but
7270 this could be regarded as a "questionable" behaviour anyway.
7273 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7274 correctly handle encrypted S/MIME data.
7277 *) Change type of various DES function arguments from des_cblock
7278 (which means, in function argument declarations, pointer to char)
7279 to des_cblock * (meaning pointer to array with 8 char elements),
7280 which allows the compiler to do more typechecking; it was like
7281 that back in SSLeay, but with lots of ugly casts.
7283 Introduce new type const_des_cblock.
7286 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7287 problems: find RecipientInfo structure that matches recipient certificate
7288 and initialise the ASN1 structures properly based on passed cipher.
7291 *) Belatedly make the BN tests actually check the results.
7294 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7295 to and from BNs: it was completely broken. New compilation option
7296 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7297 key elements as negative integers.
7300 *) Reorganize and speed up MD5.
7301 [Andy Polyakov <appro@fy.chalmers.se>]
7304 [Richard Levitte <richard@levitte.org>]
7306 *) New option -out to asn1parse to allow the parsed structure to be
7307 output to a file. This is most useful when combined with the -strparse
7308 option to examine the output of things like OCTET STRINGS.
7311 *) Make SSL library a little more fool-proof by not requiring any longer
7312 that SSL_set_{accept,connect}_state be called before
7313 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7314 in many applications because usually everything *appeared* to work as
7315 intended anyway -- now it really works as intended).
7318 *) Move openssl.cnf out of lib/.
7321 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7322 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7323 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7324 [Ralf S. Engelschall]
7326 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7327 handle PKCS#7 enveloped data properly.
7328 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7330 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7331 copying pointers. The cert_st handling is changed by this in
7332 various ways (and thus what used to be known as ctx->default_cert
7333 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7334 any longer when s->cert does not give us what we need).
7335 ssl_cert_instantiate becomes obsolete by this change.
7336 As soon as we've got the new code right (possibly it already is?),
7337 we have solved a couple of bugs of the earlier code where s->cert
7338 was used as if it could not have been shared with other SSL structures.
7340 Note that using the SSL API in certain dirty ways now will result
7341 in different behaviour than observed with earlier library versions:
7342 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7343 does not influence s as it used to.
7345 In order to clean up things more thoroughly, inside SSL_SESSION
7346 we don't use CERT any longer, but a new structure SESS_CERT
7347 that holds per-session data (if available); currently, this is
7348 the peer's certificate chain and, for clients, the server's certificate
7349 and temporary key. CERT holds only those values that can have
7350 meaningful defaults in an SSL_CTX.
7353 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7354 from the internal representation. Various PKCS#7 fixes: remove some
7355 evil casts and set the enc_dig_alg field properly based on the signing
7359 *) Allow PKCS#12 password to be set from the command line or the
7360 environment. Let 'ca' get its config file name from the environment
7361 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7365 *) Allow certificate policies extension to use an IA5STRING for the
7366 organization field. This is contrary to the PKIX definition but
7367 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7371 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7372 without disallowing inline assembler and the like for non-pedantic builds.
7375 *) Support Borland C++ builder.
7376 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7381 *) SHA-1 cleanups and performance enhancements.
7382 [Andy Polyakov <appro@fy.chalmers.se>]
7384 *) Sparc v8plus assembler for the bignum library.
7385 [Andy Polyakov <appro@fy.chalmers.se>]
7387 *) Accept any -xxx and +xxx compiler options in Configure.
7390 *) Update HPUX configuration.
7393 *) Add missing sk_<type>_unshift() function to safestack.h
7394 [Ralf S. Engelschall]
7396 *) New function SSL_CTX_use_certificate_chain_file that sets the
7397 "extra_cert"s in addition to the certificate. (This makes sense
7398 only for "PEM" format files, as chains as a whole are not
7402 *) Support verify_depth from the SSL API.
7403 x509_vfy.c had what can be considered an off-by-one-error:
7404 Its depth (which was not part of the external interface)
7405 was actually counting the number of certificates in a chain;
7406 now it really counts the depth.
7409 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7410 instead of X509err, which often resulted in confusing error
7411 messages since the error codes are not globally unique
7412 (e.g. an alleged error in ssl3_accept when a certificate
7413 didn't match the private key).
7415 *) New function SSL_CTX_set_session_id_context that allows to set a default
7416 value (so that you don't need SSL_set_session_id_context for each
7417 connection using the SSL_CTX).
7420 *) OAEP decoding bug fix.
7423 *) Support INSTALL_PREFIX for package builders, as proposed by
7427 *) New Configure options "threads" and "no-threads". For systems
7428 where the proper compiler options are known (currently Solaris
7429 and Linux), "threads" is the default.
7432 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7435 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7436 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7437 such as /usr/local/bin.
7440 *) "make linux-shared" to build shared libraries.
7441 [Niels Poppe <niels@netbox.org>]
7443 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7446 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7447 extension adding in x509 utility.
7450 *) Remove NOPROTO sections and error code comments.
7453 *) Partial rewrite of the DEF file generator to now parse the ANSI
7457 *) New Configure options --prefix=DIR and --openssldir=DIR.
7460 *) Complete rewrite of the error code script(s). It is all now handled
7461 by one script at the top level which handles error code gathering,
7462 header rewriting and C source file generation. It should be much better
7463 than the old method: it now uses a modified version of Ulf's parser to
7464 read the ANSI prototypes in all header files (thus the old K&R definitions
7465 aren't needed for error creation any more) and do a better job of
7466 translating function codes into names. The old 'ASN1 error code imbedded
7467 in a comment' is no longer necessary and it doesn't use .err files which
7468 have now been deleted. Also the error code call doesn't have to appear all
7469 on one line (which resulted in some large lines...).
7472 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7475 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7476 0 (which usually indicates a closed connection), but continue reading.
7479 *) Fix some race conditions.
7482 *) Add support for CRL distribution points extension. Add Certificate
7483 Policies and CRL distribution points documentation.
7486 *) Move the autogenerated header file parts to crypto/opensslconf.h.
7489 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
7490 8 of keying material. Merlin has also confirmed interop with this fix
7491 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
7492 [Merlin Hughes <merlin@baltimore.ie>]
7494 *) Fix lots of warnings.
7495 [Richard Levitte <levitte@stacken.kth.se>]
7497 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
7498 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
7499 [Richard Levitte <levitte@stacken.kth.se>]
7501 *) Fix problems with sizeof(long) == 8.
7502 [Andy Polyakov <appro@fy.chalmers.se>]
7504 *) Change functions to ANSI C.
7507 *) Fix typos in error codes.
7508 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
7510 *) Remove defunct assembler files from Configure.
7513 *) SPARC v8 assembler BIGNUM implementation.
7514 [Andy Polyakov <appro@fy.chalmers.se>]
7516 *) Support for Certificate Policies extension: both print and set.
7517 Various additions to support the r2i method this uses.
7520 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
7521 return a const string when you are expecting an allocated buffer.
7524 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
7525 types DirectoryString and DisplayText.
7528 *) Add code to allow r2i extensions to access the configuration database,
7529 add an LHASH database driver and add several ctx helper functions.
7532 *) Fix an evil bug in bn_expand2() which caused various BN functions to
7533 fail when they extended the size of a BIGNUM.
7536 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
7537 support typesafe stack.
7540 *) Fix typo in SSL_[gs]et_options().
7541 [Nils Frostberg <nils@medcom.se>]
7543 *) Delete various functions and files that belonged to the (now obsolete)
7544 old X509V3 handling code.
7547 *) New Configure option "rsaref".
7550 *) Don't auto-generate pem.h.
7553 *) Introduce type-safe ASN.1 SETs.
7556 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
7557 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
7559 *) Introduce type-safe STACKs. This will almost certainly break lots of code
7560 that links with OpenSSL (well at least cause lots of warnings), but fear
7561 not: the conversion is trivial, and it eliminates loads of evil casts. A
7562 few STACKed things have been converted already. Feel free to convert more.
7563 In the fullness of time, I'll do away with the STACK type altogether.
7566 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
7567 specified in <certfile> by updating the entry in the index.txt file.
7568 This way one no longer has to edit the index.txt file manually for
7569 revoking a certificate. The -revoke option does the gory details now.
7570 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
7572 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
7573 `-text' option at all and this way the `-noout -text' combination was
7574 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
7575 [Ralf S. Engelschall]
7577 *) Make sure a corresponding plain text error message exists for the
7578 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
7579 verify callback function determined that a certificate was revoked.
7580 [Ralf S. Engelschall]
7582 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
7583 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
7584 all available cipers including rc5, which was forgotten until now.
7585 In order to let the testing shell script know which algorithms
7586 are available, a new (up to now undocumented) command
7587 "openssl list-cipher-commands" is used.
7590 *) Bugfix: s_client occasionally would sleep in select() when
7591 it should have checked SSL_pending() first.
7594 *) New functions DSA_do_sign and DSA_do_verify to provide access to
7595 the raw DSA values prior to ASN.1 encoding.
7598 *) Tweaks to Configure
7599 [Niels Poppe <niels@netbox.org>]
7601 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
7605 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
7608 *) New config option to avoid instructions that are illegal on the 80386.
7609 The default code is faster, but requires at least a 486.
7612 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
7613 SSL2_SERVER_VERSION (not used at all) macros, which are now the
7614 same as SSL2_VERSION anyway.
7617 *) New "-showcerts" option for s_client.
7620 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
7621 application. Various cleanups and fixes.
7624 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
7625 modify error routines to work internally. Add error codes and PBE init
7626 to library startup routines.
7629 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
7630 packing functions to asn1 and evp. Changed function names and error
7631 codes along the way.
7634 *) PKCS12 integration: and so it begins... First of several patches to
7635 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
7636 objects to objects.h
7639 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
7640 and display support for Thawte strong extranet extension.
7643 *) Add LinuxPPC support.
7644 [Jeff Dubrule <igor@pobox.org>]
7646 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
7647 bn_div_words in alpha.s.
7648 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
7650 *) Make sure the RSA OAEP test is skipped under -DRSAref because
7651 OAEP isn't supported when OpenSSL is built with RSAref.
7652 [Ulf Moeller <ulf@fitug.de>]
7654 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
7655 so they no longer are missing under -DNOPROTO.
7656 [Soren S. Jorvang <soren@t.dk>]
7659 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
7661 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
7662 doesn't work when the session is reused. Coming soon!
7665 *) Fix a security hole, that allows sessions to be reused in the wrong
7666 context thus bypassing client cert protection! All software that uses
7667 client certs and session caches in multiple contexts NEEDS PATCHING to
7668 allow session reuse! A fuller solution is in the works.
7669 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
7671 *) Some more source tree cleanups (removed obsolete files
7672 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
7673 permission on "config" script to be executable) and a fix for the INSTALL
7675 [Ulf Moeller <ulf@fitug.de>]
7677 *) Remove some legacy and erroneous uses of malloc, free instead of
7679 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
7681 *) Make rsa_oaep_test return non-zero on error.
7682 [Ulf Moeller <ulf@fitug.de>]
7684 *) Add support for native Solaris shared libraries. Configure
7685 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
7686 if someone would make that last step automatic.
7687 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
7689 *) ctx_size was not built with the right compiler during "make links". Fixed.
7692 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
7693 except NULL ciphers". This means the default cipher list will no longer
7694 enable NULL ciphers. They need to be specifically enabled e.g. with
7695 the string "DEFAULT:eNULL".
7698 *) Fix to RSA private encryption routines: if p < q then it would
7699 occasionally produce an invalid result. This will only happen with
7700 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
7703 *) Be less restrictive and allow also `perl util/perlpath.pl
7704 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
7705 because this way one can also use an interpreter named `perl5' (which is
7706 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
7707 installed as `perl').
7708 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
7710 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
7711 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
7713 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
7714 advapi32.lib to Win32 build and change the pem test comparision
7715 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
7716 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
7717 and crypto/des/ede_cbcm_enc.c.
7720 *) DES quad checksum was broken on big-endian architectures. Fixed.
7723 *) Comment out two functions in bio.h that aren't implemented. Fix up the
7724 Win32 test batch file so it (might) work again. The Win32 test batch file
7725 is horrible: I feel ill....
7728 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
7729 in e_os.h. Audit of header files to check ANSI and non ANSI
7730 sections: 10 functions were absent from non ANSI section and not exported
7731 from Windows DLLs. Fixed up libeay.num for new functions.
7734 *) Make `openssl version' output lines consistent.
7735 [Ralf S. Engelschall]
7737 *) Fix Win32 symbol export lists for BIO functions: Added
7738 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
7739 to ms/libeay{16,32}.def.
7740 [Ralf S. Engelschall]
7742 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
7743 fine under Unix and passes some trivial tests I've now added. But the
7744 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
7745 added to make sure no one expects that this stuff really works in the
7746 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
7747 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
7749 [Ralf S. Engelschall]
7751 *) Fix the generation of two part addresses in perl.
7752 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
7754 *) Add config entry for Linux on MIPS.
7755 [John Tobey <jtobey@channel1.com>]
7757 *) Make links whenever Configure is run, unless we are on Windoze.
7760 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
7761 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
7765 *) Add a useful kludge to allow package maintainers to specify compiler and
7766 other platforms details on the command line without having to patch the
7767 Configure script everytime: One now can use ``perl Configure
7768 <id>:<details>'', i.e. platform ids are allowed to have details appended
7769 to them (seperated by colons). This is treated as there would be a static
7770 pre-configured entry in Configure's %table under key <id> with value
7771 <details> and ``perl Configure <id>'' is called. So, when you want to
7772 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
7773 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
7774 now, which overrides the FreeBSD-elf entry on-the-fly.
7775 [Ralf S. Engelschall]
7777 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
7780 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
7781 on the `perl Configure ...' command line. This way one can compile
7782 OpenSSL libraries with Position Independent Code (PIC) which is needed
7783 for linking it into DSOs.
7784 [Ralf S. Engelschall]
7786 *) Remarkably, export ciphers were totally broken and no-one had noticed!
7790 *) Cleaned up the LICENSE document: The official contact for any license
7791 questions now is the OpenSSL core team under openssl-core@openssl.org.
7792 And add a paragraph about the dual-license situation to make sure people
7793 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
7794 to the OpenSSL toolkit.
7795 [Ralf S. Engelschall]
7797 *) General source tree makefile cleanups: Made `making xxx in yyy...'
7798 display consistent in the source tree and replaced `/bin/rm' by `rm'.
7799 Additonally cleaned up the `make links' target: Remove unnecessary
7800 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
7801 to speed processing and no longer clutter the display with confusing
7802 stuff. Instead only the actually done links are displayed.
7803 [Ralf S. Engelschall]
7805 *) Permit null encryption ciphersuites, used for authentication only. It used
7806 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
7807 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
7811 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
7812 signed attributes when verifying signatures (this would break them),
7813 the detached data encoding was wrong and public keys obtained using
7814 X509_get_pubkey() weren't freed.
7817 *) Add text documentation for the BUFFER functions. Also added a work around
7818 to a Win95 console bug. This was triggered by the password read stuff: the
7819 last character typed gets carried over to the next fread(). If you were
7820 generating a new cert request using 'req' for example then the last
7821 character of the passphrase would be CR which would then enter the first
7825 *) Added the new `Includes OpenSSL Cryptography Software' button as
7826 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
7827 button and can be used by applications based on OpenSSL to show the
7828 relationship to the OpenSSL project.
7829 [Ralf S. Engelschall]
7831 *) Remove confusing variables in function signatures in files
7832 ssl/ssl_lib.c and ssl/ssl.h.
7833 [Lennart Bong <lob@kulthea.stacken.kth.se>]
7835 *) Don't install bss_file.c under PREFIX/include/
7836 [Lennart Bong <lob@kulthea.stacken.kth.se>]
7838 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
7839 functions that return function pointers and has support for NT specific
7840 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
7841 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
7842 unsigned to signed types: this was killing the Win32 compile.
7845 *) Add new certificate file to stack functions,
7846 SSL_add_dir_cert_subjects_to_stack() and
7847 SSL_add_file_cert_subjects_to_stack(). These largely supplant
7848 SSL_load_client_CA_file(), and can be used to add multiple certs easily
7849 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
7850 This means that Apache-SSL and similar packages don't have to mess around
7851 to add as many CAs as they want to the preferred list.
7854 *) Experiment with doxygen documentation. Currently only partially applied to
7856 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
7857 openssl.doxy as the configuration file.
7860 *) Get rid of remaining C++-style comments which strict C compilers hate.
7861 [Ralf S. Engelschall, pointed out by Carlos Amengual]
7863 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
7864 compiled in by default: it has problems with large keys.
7867 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
7868 DH private keys and/or callback functions which directly correspond to
7869 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
7870 is needed for applications which have to configure certificates on a
7871 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
7873 For the RSA certificate situation is makes no difference, but
7874 for the DSA certificate situation this fixes the "no shared cipher"
7875 problem where the OpenSSL cipher selection procedure failed because the
7876 temporary keys were not overtaken from the context and the API provided
7877 no way to reconfigure them.
7878 The new functions now let applications reconfigure the stuff and they
7879 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
7880 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
7881 non-public-API function ssl_cert_instantiate() is used as a helper
7882 function and also to reduce code redundancy inside ssl_rsa.c.
7883 [Ralf S. Engelschall]
7885 *) Move s_server -dcert and -dkey options out of the undocumented feature
7886 area because they are useful for the DSA situation and should be
7887 recognized by the users.
7888 [Ralf S. Engelschall]
7890 *) Fix the cipher decision scheme for export ciphers: the export bits are
7891 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
7892 SSL_EXP_MASK. So, the original variable has to be used instead of the
7893 already masked variable.
7894 [Richard Levitte <levitte@stacken.kth.se>]
7896 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
7897 [Richard Levitte <levitte@stacken.kth.se>]
7899 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
7900 from `int' to `unsigned int' because it's a length and initialized by
7901 EVP_DigestFinal() which expects an `unsigned int *'.
7902 [Richard Levitte <levitte@stacken.kth.se>]
7904 *) Don't hard-code path to Perl interpreter on shebang line of Configure
7905 script. Instead use the usual Shell->Perl transition trick.
7906 [Ralf S. Engelschall]
7908 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
7909 (in addition to RSA certificates) to match the behaviour of `openssl dsa
7910 -noout -modulus' as it's already the case for `openssl rsa -noout
7911 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
7912 currently the public key is printed (a decision which was already done by
7913 `openssl dsa -modulus' in the past) which serves a similar purpose.
7914 Additionally the NO_RSA no longer completely removes the whole -modulus
7915 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
7917 [Ralf S. Engelschall]
7919 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
7920 BIO. See the source (crypto/evp/bio_ok.c) for more info.
7921 [Arne Ansper <arne@ats.cyber.ee>]
7923 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
7924 to be added. Now both 'req' and 'ca' can use new objects defined in the
7928 *) Add cool BIO that does syslog (or event log on NT).
7929 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
7931 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
7932 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
7933 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
7934 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
7937 *) Add preliminary config info for new extension code.
7940 *) Make RSA_NO_PADDING really use no padding.
7941 [Ulf Moeller <ulf@fitug.de>]
7943 *) Generate errors when private/public key check is done.
7946 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
7947 for some CRL extensions and new objects added.
7950 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
7951 key usage extension and fuller support for authority key id.
7954 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
7955 padding method for RSA, which is recommended for new applications in PKCS
7956 #1 v2.0 (RFC 2437, October 1998).
7957 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
7958 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
7959 against Bleichbacher's attack on RSA.
7960 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
7963 *) Updates to the new SSL compression code
7964 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
7966 *) Fix so that the version number in the master secret, when passed
7967 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
7968 (because the server will not accept higher), that the version number
7969 is 0x03,0x01, not 0x03,0x00
7970 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
7972 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
7973 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
7974 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
7977 *) Support for RAW extensions where an arbitrary extension can be
7978 created by including its DER encoding. See apps/openssl.cnf for
7982 *) Make sure latest Perl versions don't interpret some generated C array
7983 code as Perl array code in the crypto/err/err_genc.pl script.
7984 [Lars Weber <3weber@informatik.uni-hamburg.de>]
7986 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
7987 not many people have the assembler. Various Win32 compilation fixes and
7988 update to the INSTALL.W32 file with (hopefully) more accurate Win32
7992 *) Modify configure script 'Configure' to automatically create crypto/date.h
7993 file under Win32 and also build pem.h from pem.org. New script
7994 util/mkfiles.pl to create the MINFO file on environments that can't do a
7995 'make files': perl util/mkfiles.pl >MINFO should work.
7998 *) Major rework of DES function declarations, in the pursuit of correctness
7999 and purity. As a result, many evil casts evaporated, and some weirdness,
8000 too. You may find this causes warnings in your code. Zapping your evil
8001 casts will probably fix them. Mostly.
8004 *) Fix for a typo in asn1.h. Bug fix to object creation script
8005 obj_dat.pl. It considered a zero in an object definition to mean
8006 "end of object": none of the objects in objects.h have any zeros
8007 so it wasn't spotted.
8008 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
8010 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
8011 Masking (CBCM). In the absence of test vectors, the best I have been able
8012 to do is check that the decrypt undoes the encrypt, so far. Send me test
8013 vectors if you have them.
8016 *) Correct calculation of key length for export ciphers (too much space was
8017 allocated for null ciphers). This has not been tested!
8020 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
8021 message is now correct (it understands "crypto" and "ssl" on its
8022 command line). There is also now an "update" option. This will update
8023 the util/ssleay.num and util/libeay.num files with any new functions.
8025 perl util/mkdef.pl crypto ssl update
8026 it will update them.
8029 *) Overhauled the Perl interface (perl/*):
8030 - ported BN stuff to OpenSSL's different BN library
8031 - made the perl/ source tree CVS-aware
8032 - renamed the package from SSLeay to OpenSSL (the files still contain
8033 their history because I've copied them in the repository)
8034 - removed obsolete files (the test scripts will be replaced
8035 by better Test::Harness variants in the future)
8036 [Ralf S. Engelschall]
8038 *) First cut for a very conservative source tree cleanup:
8039 1. merge various obsolete readme texts into doc/ssleay.txt
8040 where we collect the old documents and readme texts.
8041 2. remove the first part of files where I'm already sure that we no
8042 longer need them because of three reasons: either they are just temporary
8043 files which were left by Eric or they are preserved original files where
8044 I've verified that the diff is also available in the CVS via "cvs diff
8045 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8046 the crypto/md/ stuff).
8047 [Ralf S. Engelschall]
8049 *) More extension code. Incomplete support for subject and issuer alt
8050 name, issuer and authority key id. Change the i2v function parameters
8051 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8052 what that's for :-) Fix to ASN1 macro which messed up
8053 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8056 *) Preliminary support for ENUMERATED type. This is largely copied from the
8060 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8061 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8063 *) Make sure `make rehash' target really finds the `openssl' program.
8064 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8066 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8067 like to hear about it if this slows down other processors.
8070 *) Add CygWin32 platform information to Configure script.
8071 [Alan Batie <batie@aahz.jf.intel.com>]
8073 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8074 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8076 *) New program nseq to manipulate netscape certificate sequences
8079 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8083 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8084 but the BN code had some problems that would cause failures when
8085 doing certificate verification and some other functions.
8086 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8088 *) Add ASN1 and PEM code to support netscape certificate sequences.
8091 *) Add ASN1 and PEM code to support netscape certificate sequences.
8094 *) Add several PKIX and private extended key usage OIDs.
8097 *) Modify the 'ca' program to handle the new extension code. Modify
8098 openssl.cnf for new extension format, add comments.
8101 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8102 and add a sample to openssl.cnf so req -x509 now adds appropriate
8106 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8107 error code, add initial support to X509_print() and x509 application.
8110 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8111 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8112 stuff is currently isolated and isn't even compiled yet.
8115 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8116 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8117 Removed the versions check from X509 routines when loading extensions:
8118 this allows certain broken certificates that don't set the version
8119 properly to be processed.
8122 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8123 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8124 can still be regenerated with "make depend".
8127 *) Spelling mistake in C version of CAST-128.
8128 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8130 *) Changes to the error generation code. The perl script err-code.pl
8131 now reads in the old error codes and retains the old numbers, only
8132 adding new ones if necessary. It also only changes the .err files if new
8133 codes are added. The makefiles have been modified to only insert errors
8134 when needed (to avoid needlessly modifying header files). This is done
8135 by only inserting errors if the .err file is newer than the auto generated
8136 C file. To rebuild all the error codes from scratch (the old behaviour)
8137 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8138 or delete all the .err files.
8141 *) CAST-128 was incorrectly implemented for short keys. The C version has
8142 been fixed, but is untested. The assembler versions are also fixed, but
8143 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8144 to regenerate it if needed.
8145 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8146 Hagino <itojun@kame.net>]
8148 *) File was opened incorrectly in randfile.c.
8149 [Ulf Möller <ulf@fitug.de>]
8151 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8152 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8153 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8154 al: it's just almost always a UTCTime. Note this patch adds new error
8155 codes so do a "make errors" if there are problems.
8158 *) Correct Linux 1 recognition in config.
8159 [Ulf Möller <ulf@fitug.de>]
8161 *) Remove pointless MD5 hash when using DSA keys in ca.
8162 [Anonymous <nobody@replay.com>]
8164 *) Generate an error if given an empty string as a cert directory. Also
8165 generate an error if handed NULL (previously returned 0 to indicate an
8166 error, but didn't set one).
8167 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8169 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8172 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8173 parameters. This was causing a warning which killed off the Win32 compile.
8176 *) Remove C++ style comments from crypto/bn/bn_local.h.
8177 [Neil Costigan <neil.costigan@celocom.com>]
8179 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8180 based on a text string, looking up short and long names and finally
8181 "dot" format. The "dot" format stuff didn't work. Added new function
8182 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8183 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8184 OID is not part of the table.
8187 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8188 X509_LOOKUP_by_alias().
8191 *) Sort openssl functions by name.
8194 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8195 encryption from sample DSA keys (in case anyone is interested the password
8199 *) Make _all_ *_free functions accept a NULL pointer.
8200 [Frans Heymans <fheymans@isaserver.be>]
8202 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8204 [Anonymous <nobody@replay.com>]
8206 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8207 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8209 *) Don't blow it for numeric -newkey arguments to apps/req.
8210 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8212 *) Temp key "for export" tests were wrong in s3_srvr.c.
8213 [Anonymous <nobody@replay.com>]
8215 *) Add prototype for temp key callback functions
8216 SSL_CTX_set_tmp_{rsa,dh}_callback().
8219 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8220 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8223 *) X509_name_add_entry() freed the wrong thing after an error.
8224 [Arne Ansper <arne@ats.cyber.ee>]
8226 *) rsa_eay.c would attempt to free a NULL context.
8227 [Arne Ansper <arne@ats.cyber.ee>]
8229 *) BIO_s_socket() had a broken should_retry() on Windoze.
8230 [Arne Ansper <arne@ats.cyber.ee>]
8232 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8233 [Arne Ansper <arne@ats.cyber.ee>]
8235 *) Make sure the already existing X509_STORE->depth variable is initialized
8236 in X509_STORE_new(), but document the fact that this variable is still
8237 unused in the certificate verification process.
8238 [Ralf S. Engelschall]
8240 *) Fix the various library and apps files to free up pkeys obtained from
8241 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8244 *) Fix reference counting in X509_PUBKEY_get(). This makes
8245 demos/maurice/example2.c work, amongst others, probably.
8246 [Steve Henson and Ben Laurie]
8248 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8249 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8250 are no longer created. This way we have a single and consistent command
8251 line interface `openssl <command>', similar to `cvs <command>'.
8252 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8254 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8255 BIT STRING wrapper always have zero unused bits.
8258 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8261 *) Make the top-level INSTALL documentation easier to understand.
8264 *) Makefiles updated to exit if an error occurs in a sub-directory
8265 make (including if user presses ^C) [Paul Sutton]
8267 *) Make Montgomery context stuff explicit in RSA data structure.
8270 *) Fix build order of pem and err to allow for generated pem.h.
8273 *) Fix renumbering bug in X509_NAME_delete_entry().
8276 *) Enhanced the err-ins.pl script so it makes the error library number
8277 global and can add a library name. This is needed for external ASN1 and
8278 other error libraries.
8281 *) Fixed sk_insert which never worked properly.
8284 *) Fix ASN1 macros so they can handle indefinite length construted
8285 EXPLICIT tags. Some non standard certificates use these: they can now
8289 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8290 into a single doc/ssleay.txt bundle. This way the information is still
8291 preserved but no longer messes up this directory. Now it's new room for
8292 the new set of documenation files.
8293 [Ralf S. Engelschall]
8295 *) SETs were incorrectly DER encoded. This was a major pain, because they
8296 shared code with SEQUENCEs, which aren't coded the same. This means that
8297 almost everything to do with SETs or SEQUENCEs has either changed name or
8298 number of arguments.
8299 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8301 *) Fix test data to work with the above.
8304 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8305 was already fixed by Eric for 0.9.1 it seems.
8306 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8308 *) Autodetect FreeBSD3.
8311 *) Fix various bugs in Configure. This affects the following platforms:
8315 unixware-2.0-pentium
8319 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8320 before they are needed.
8323 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8327 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8329 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8330 changed SSLeay to OpenSSL in version strings.
8331 [Ralf S. Engelschall]
8333 *) Some fixups to the top-level documents.
8336 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8337 because the symlink to include/ was missing.
8338 [Ralf S. Engelschall]
8340 *) Incorporated the popular no-RSA/DSA-only patches
8341 which allow to compile a RSA-free SSLeay.
8342 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8344 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8345 when "ssleay" is still not found.
8346 [Ralf S. Engelschall]
8348 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8349 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8351 *) Updated the README file.
8352 [Ralf S. Engelschall]
8354 *) Added various .cvsignore files in the CVS repository subdirs
8355 to make a "cvs update" really silent.
8356 [Ralf S. Engelschall]
8358 *) Recompiled the error-definition header files and added
8359 missing symbols to the Win32 linker tables.
8360 [Ralf S. Engelschall]
8362 *) Cleaned up the top-level documents;
8363 o new files: CHANGES and LICENSE
8364 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8365 o merged COPYRIGHT into LICENSE
8366 o removed obsolete TODO file
8367 o renamed MICROSOFT to INSTALL.W32
8368 [Ralf S. Engelschall]
8370 *) Removed dummy files from the 0.9.1b source tree:
8371 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8372 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8373 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8374 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8375 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8376 [Ralf S. Engelschall]
8378 *) Added various platform portability fixes.
8381 *) The Genesis of the OpenSSL rpject:
8382 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8383 Young and Tim J. Hudson created while they were working for C2Net until
8385 [The OpenSSL Project]
8388 Changes between 0.9.0b and 0.9.1b [not released]
8390 *) Updated a few CA certificates under certs/
8393 *) Changed some BIGNUM api stuff.
8396 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8397 DGUX x86, Linux Alpha, etc.
8400 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8401 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8405 *) Add -strparse option to asn1pars program which parses nested
8407 [Dr Stephen Henson <shenson@bigfoot.com>]
8409 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8412 *) DSA fix for "ca" program.
8415 *) Added "-genkey" option to "dsaparam" program.
8418 *) Added RIPE MD160 (rmd160) message digest.
8421 *) Added -a (all) option to "ssleay version" command.
8424 *) Added PLATFORM define which is the id given to Configure.
8427 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8430 *) Extended the ASN.1 parser routines.
8433 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8436 *) Added a BN_CTX to the BN library.
8439 *) Fixed the weak key values in DES library
8442 *) Changed API in EVP library for cipher aliases.
8445 *) Added support for RC2/64bit cipher.
8448 *) Converted the lhash library to the crypto/mem.c functions.
8451 *) Added more recognized ASN.1 object ids.
8454 *) Added more RSA padding checks for SSL/TLS.
8457 *) Added BIO proxy/filter functionality.
8460 *) Added extra_certs to SSL_CTX which can be used
8461 send extra CA certificates to the client in the CA cert chain sending
8462 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8465 *) Now Fortezza is denied in the authentication phase because
8466 this is key exchange mechanism is not supported by SSLeay at all.
8469 *) Additional PKCS1 checks.
8472 *) Support the string "TLSv1" for all TLS v1 ciphers.
8475 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8476 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8479 *) Fixed a few memory leaks.
8482 *) Fixed various code and comment typos.
8485 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
8486 bytes sent in the client random.
8487 [Edward Bishop <ebishop@spyglass.com>]