5 Changes between 0.9.8j and 0.9.9 [xx XXX xxxx]
7 *) Add session ticket override functionality for use by EAP-FAST.
8 [Jouni Malinen <j@w1.fi>]
10 *) Modify HMAC functions to return a value. Since these can be implemented
11 in an ENGINE errors can occur.
14 *) Type-checked OBJ_bsearch_ex.
17 *) Type-checked OBJ_bsearch. Also some constification necessitated
18 by type-checking. Still to come: TXT_DB, bsearch(?),
19 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
23 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
24 seconds to a tm structure directly, instead of going through OS
25 specific date routines. This avoids any issues with OS routines such
26 as the year 2038 bug. New *_adj() functions for ASN1 time structures
27 and X509_time_adj_ex() to cover the extended range. The existing
28 X509_time_adj() is still usable and will no longer have any date issues.
31 *) Delta CRL support. New use deltas option which will attempt to locate
32 and search any appropriate delta CRLs available.
34 This work was sponsored by Google.
37 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
38 code and add additional score elements. Validate alternate CRL paths
39 as part of the CRL checking and indicate a new error "CRL path validation
40 error" in this case. Applications wanting additional details can use
41 the verify callback and check the new "parent" field. If this is not
42 NULL CRL path validation is taking place. Existing applications wont
43 see this because it requires extended CRL support which is off by
46 This work was sponsored by Google.
49 *) Support for freshest CRL extension.
51 This work was sponsored by Google.
54 *) Initial indirect CRL support. Currently only supported in the CRLs
55 passed directly and not via lookup. Process certificate issuer
56 CRL entry extension and lookup CRL entries by bother issuer name
57 and serial number. Check and process CRL issuer entry in IDP extension.
59 This work was sponsored by Google.
62 *) Add support for distinct certificate and CRL paths. The CRL issuer
63 certificate is validated separately in this case. Only enabled if
64 an extended CRL support flag is set: this flag will enable additional
65 CRL functionality in future.
67 This work was sponsored by Google.
70 *) Add support for policy mappings extension.
72 This work was sponsored by Google.
75 *) Fixes to pathlength constraint, self issued certificate handling,
76 policy processing to align with RFC3280 and PKITS tests.
78 This work was sponsored by Google.
81 *) Support for name constraints certificate extension. DN, email, DNS
82 and URI types are currently supported.
84 This work was sponsored by Google.
87 *) To cater for systems that provide a pointer-based thread ID rather
88 than numeric, deprecate the current numeric thread ID mechanism and
89 replace it with a structure and associated callback type. This
90 mechanism allows a numeric "hash" to be extracted from a thread ID in
91 either case, and on platforms where pointers are larger than 'long',
92 mixing is done to help ensure the numeric 'hash' is usable even if it
93 can't be guaranteed unique. The default mechanism is to use "&errno"
94 as a pointer-based thread ID to distinguish between threads.
96 Applications that want to provide their own thread IDs should now use
97 CRYPTO_THREADID_set_callback() to register a callback that will call
98 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
100 Note that ERR_remove_state() is now deprecated, because it is tied
101 to the assumption that thread IDs are numeric. ERR_remove_state(0)
102 to free the current thread's error state should be replaced by
103 ERR_remove_thread_state(NULL).
105 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
106 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
107 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
108 application was previously providing a numeric thread callback that
109 was inappropriate for distinguishing threads, then uniqueness might
110 have been obtained with &errno that happened immediately in the
111 intermediate development versions of OpenSSL; this is no longer the
112 case, the numeric thread callback will now override the automatic use
114 [Geoff Thorpe, with help from Bodo Moeller]
116 *) Initial support for different CRL issuing certificates. This covers a
117 simple case where the self issued certificates in the chain exist and
118 the real CRL issuer is higher in the existing chain.
120 This work was sponsored by Google.
123 *) Removed effectively defunct crypto/store from the build.
126 *) Revamp of STACK to provide stronger type-checking. Still to come:
127 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
128 ASN1_STRING, CONF_VALUE.
131 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
132 RAM on SSL connections. This option can save about 34k per idle SSL.
135 *) Revamp of LHASH to provide stronger type-checking. Still to come:
136 STACK, TXT_DB, bsearch, qsort.
139 *) Initial support for Cryptographic Message Syntax (aka CMS) based
140 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
141 support for data, signedData, compressedData, digestedData and
142 encryptedData, envelopedData types included. Scripts to check against
143 RFC4134 examples draft and interop and consistency checks of many
144 content types and variants.
147 *) Add options to enc utility to support use of zlib compression BIO.
150 *) Extend mk1mf to support importing of options and assembly language
151 files from Configure script, currently only included in VC-WIN32.
152 The assembly language rules can now optionally generate the source
153 files from the associated perl scripts.
156 *) Implement remaining functionality needed to support GOST ciphersuites.
157 Interop testing has been performed using CryptoPro implementations.
158 [Victor B. Wagner <vitus@cryptocom.ru>]
160 *) s390x assembler pack.
163 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
167 *) Implement Opaque PRF Input TLS extension as specified in
168 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
169 official specification yet and no extension type assignment by
170 IANA exists, this extension (for now) will have to be explicitly
171 enabled when building OpenSSL by providing the extension number
172 to use. For example, specify an option
174 -DTLSEXT_TYPE_opaque_prf_input=0x9527
176 to the "config" or "Configure" script to enable the extension,
177 assuming extension number 0x9527 (which is a completely arbitrary
178 and unofficial assignment based on the MD5 hash of the Internet
179 Draft). Note that by doing so, you potentially lose
180 interoperability with other TLS implementations since these might
181 be using the same extension number for other purposes.
183 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
184 opaque PRF input value to use in the handshake. This will create
185 an interal copy of the length-'len' string at 'src', and will
186 return non-zero for success.
188 To get more control and flexibility, provide a callback function
191 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
192 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
196 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
199 Callback function 'cb' will be called in handshakes, and is
200 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
201 Argument 'arg' is for application purposes (the value as given to
202 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
203 be provided to the callback function). The callback function
204 has to return non-zero to report success: usually 1 to use opaque
205 PRF input just if possible, or 2 to enforce use of the opaque PRF
206 input. In the latter case, the library will abort the handshake
207 if opaque PRF input is not successfully negotiated.
209 Arguments 'peerinput' and 'len' given to the callback function
210 will always be NULL and 0 in the case of a client. A server will
211 see the client's opaque PRF input through these variables if
212 available (NULL and 0 otherwise). Note that if the server
213 provides an opaque PRF input, the length must be the same as the
214 length of the client's opaque PRF input.
216 Note that the callback function will only be called when creating
217 a new session (session resumption can resume whatever was
218 previously negotiated), and will not be called in SSL 2.0
219 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
220 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
221 for applications that need to enforce opaque PRF input.
225 *) Update ssl code to support digests other than SHA1+MD5 for handshake
228 [Victor B. Wagner <vitus@cryptocom.ru>]
230 *) Add RFC4507 support to OpenSSL. This includes the corrections in
231 RFC4507bis. The encrypted ticket format is an encrypted encoded
232 SSL_SESSION structure, that way new session features are automatically
235 If a client application caches session in an SSL_SESSION structure
236 support is transparent because tickets are now stored in the encoded
239 The SSL_CTX structure automatically generates keys for ticket
240 protection in servers so again support should be possible
241 with no application modification.
243 If a client or server wishes to disable RFC4507 support then the option
244 SSL_OP_NO_TICKET can be set.
246 Add a TLS extension debugging callback to allow the contents of any client
247 or server extensions to be examined.
249 This work was sponsored by Google.
252 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
253 OpenSSL should now compile cleanly on gcc 4.2
254 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
256 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
257 support including streaming MAC support: this is required for GOST
259 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
261 *) Add option -stream to use PKCS#7 streaming in smime utility. New
262 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
263 to output in BER and PEM format.
266 *) Experimental support for use of HMAC via EVP_PKEY interface. This
267 allows HMAC to be handled via the EVP_DigestSign*() interface. The
268 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
269 ENGINE support for HMAC keys which are unextractable. New -mac and
270 -macopt options to dgst utility.
273 *) New option -sigopt to dgst utility. Update dgst to use
274 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
275 alternative signing paramaters such as X9.31 or PSS in the dgst
279 *) Change ssl_cipher_apply_rule(), the internal function that does
280 the work each time a ciphersuite string requests enabling
281 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
282 removing ("!foo+bar") a class of ciphersuites: Now it maintains
283 the order of disabled ciphersuites such that those ciphersuites
284 that most recently went from enabled to disabled not only stay
285 in order with respect to each other, but also have higher priority
286 than other disabled ciphersuites the next time ciphersuites are
289 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
290 the same ciphersuites as with "HIGH" alone, but in a specific
291 order where the PSK ciphersuites come first (since they are the
292 most recently disabled ciphersuites when "HIGH" is parsed).
294 Also, change ssl_create_cipher_list() (using this new
295 funcionality) such that between otherwise identical
296 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
300 *) Change ssl_create_cipher_list() so that it automatically
301 arranges the ciphersuites in reasonable order before starting
302 to process the rule string. Thus, the definition for "DEFAULT"
303 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
304 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
305 This makes it much easier to arrive at a reasonable default order
306 in applications for which anonymous ciphers are OK (meaning
307 that you can't actually use DEFAULT).
308 [Bodo Moeller; suggested by Victor Duchovni]
310 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
311 processing) into multiple integers instead of setting
312 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
313 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
314 (These masks as well as the individual bit definitions are hidden
315 away into the non-exported interface ssl/ssl_locl.h, so this
316 change to the definition of the SSL_CIPHER structure shouldn't
317 affect applications.) This give us more bits for each of these
318 categories, so there is no longer a need to coagulate AES128 and
319 AES256 into a single algorithm bit, and to coagulate Camellia128
320 and Camellia256 into a single algorithm bit, which has led to all
323 Thus, among other things, the kludge introduced in 0.9.7m and
324 0.9.8e for masking out AES256 independently of AES128 or masking
325 out Camellia256 independently of AES256 is not needed here in 0.9.9.
327 With the change, we also introduce new ciphersuite aliases that
328 so far were missing: "AES128", "AES256", "CAMELLIA128", and
332 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
333 Use the leftmost N bytes of the signature input if the input is
334 larger than the prime q (with N being the size in bytes of q).
337 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
338 it yet and it is largely untested.
341 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
344 *) Initial incomplete changes to avoid need for function casts in OpenSSL
345 some compilers (gcc 4.2 and later) reject their use. Safestack is
346 reimplemented. Update ASN1 to avoid use of legacy functions.
349 *) Win32/64 targets are linked with Winsock2.
352 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
353 to external functions. This can be used to increase CRL handling
354 efficiency especially when CRLs are very large by (for example) storing
355 the CRL revoked certificates in a database.
358 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
359 new CRLs added to a directory can be used. New command line option
360 -verify_return_error to s_client and s_server. This causes real errors
361 to be returned by the verify callback instead of carrying on no matter
362 what. This reflects the way a "real world" verify callback would behave.
365 *) GOST engine, supporting several GOST algorithms and public key formats.
366 Kindly donated by Cryptocom.
369 *) Partial support for Issuing Distribution Point CRL extension. CRLs
370 partitioned by DP are handled but no indirect CRL or reason partitioning
371 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
372 selected via a scoring technique which handles IDP and AKID in CRLs.
375 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
376 will ultimately be used for all verify operations: this will remove the
377 X509_STORE dependency on certificate verification and allow alternative
378 lookup methods. X509_STORE based implementations of these two callbacks.
381 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
382 Modify get_crl() to find a valid (unexpired) CRL if possible.
385 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
386 this would be called X509_CRL_cmp() but that name is already used by
387 a function that just compares CRL issuer names. Cache several CRL
388 extensions in X509_CRL structure and cache CRLDP in X509.
391 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
392 this maps equivalent X509_NAME structures into a consistent structure.
393 Name comparison can then be performed rapidly using memcmp().
396 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
400 *) Allow digests to supply their own micalg string for S/MIME type using
401 the ctrl EVP_MD_CTRL_MICALG.
404 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
405 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
406 ctrl. It can then customise the structure before and/or after signing
410 *) New function OBJ_add_sigid() to allow application defined signature OIDs
411 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
412 to free up any added signature OIDs.
415 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
416 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
417 digest and cipher tables. New options added to openssl utility:
418 list-message-digest-algorithms and list-cipher-algorithms.
421 *) Change the array representation of binary polynomials: the list
422 of degrees of non-zero coefficients is now terminated with -1.
423 Previously it was terminated with 0, which was also part of the
424 value; thus, the array representation was not applicable to
425 polynomials where t^0 has coefficient zero. This change makes
426 the array representation useful in a more general context.
429 *) Various modifications and fixes to SSL/TLS cipher string
430 handling. For ECC, the code now distinguishes between fixed ECDH
431 with RSA certificates on the one hand and with ECDSA certificates
432 on the other hand, since these are separate ciphersuites. The
433 unused code for Fortezza ciphersuites has been removed.
435 For consistency with EDH, ephemeral ECDH is now called "EECDH"
436 (not "ECDHE"). For consistency with the code for DH
437 certificates, use of ECDH certificates is now considered ECDH
438 authentication, not RSA or ECDSA authentication (the latter is
439 merely the CA's signing algorithm and not actively used in the
442 The temporary ciphersuite alias "ECCdraft" is no longer
443 available, and ECC ciphersuites are no longer excluded from "ALL"
444 and "DEFAULT". The following aliases now exist for RFC 4492
445 ciphersuites, most of these by analogy with the DH case:
447 kECDHr - ECDH cert, signed with RSA
448 kECDHe - ECDH cert, signed with ECDSA
449 kECDH - ECDH cert (signed with either RSA or ECDSA)
450 kEECDH - ephemeral ECDH
451 ECDH - ECDH cert or ephemeral ECDH
457 AECDH - anonymous ECDH
458 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
462 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
463 Use correct micalg parameters depending on digest(s) in signed message.
466 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
467 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
470 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
471 an engine to register a method. Add ENGINE lookups for methods and
472 functional reference processing.
475 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
476 EVP_{Sign,Verify}* which allow an application to customise the signature
480 *) New -resign option to smime utility. This adds one or more signers
481 to an existing PKCS#7 signedData structure. Also -md option to use an
482 alternative message digest algorithm for signing.
485 *) Tidy up PKCS#7 routines and add new functions to make it easier to
486 create PKCS7 structures containing multiple signers. Update smime
487 application to support multiple signers.
490 *) New -macalg option to pkcs12 utility to allow setting of an alternative
494 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
495 Reorganize PBE internals to lookup from a static table using NIDs,
496 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
497 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
498 PRF which will be automatically used with PBES2.
501 *) Replace the algorithm specific calls to generate keys in "req" with the
505 *) Update PKCS#7 enveloped data routines to use new API. This is now
506 supported by any public key method supporting the encrypt operation. A
507 ctrl is added to allow the public key algorithm to examine or modify
508 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
512 *) Add a ctrl to asn1 method to allow a public key algorithm to express
513 a default digest type to use. In most cases this will be SHA1 but some
514 algorithms (such as GOST) need to specify an alternative digest. The
515 return value indicates how strong the prefernce is 1 means optional and
516 2 is mandatory (that is it is the only supported type). Modify
517 ASN1_item_sign() to accept a NULL digest argument to indicate it should
518 use the default md. Update openssl utilities to use the default digest
519 type for signing if it is not explicitly indicated.
522 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
523 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
524 signing method from the key type. This effectively removes the link
525 between digests and public key types.
528 *) Add an OID cross reference table and utility functions. Its purpose is to
529 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
530 rsaEncryption. This will allow some of the algorithm specific hackery
531 needed to use the correct OID to be removed.
534 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
535 structures for PKCS7_sign(). They are now set up by the relevant public
539 *) Add provisional EC pkey method with support for ECDSA and ECDH.
542 *) Add support for key derivation (agreement) in the API, DH method and
546 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
547 public and private key formats. As a side effect these add additional
548 command line functionality not previously available: DSA signatures can be
549 generated and verified using pkeyutl and DH key support and generation in
554 [Oliver Tappe <zooey@hirschkaefer.de>]
556 *) New make target "install_html_docs" installs HTML renditions of the
558 [Oliver Tappe <zooey@hirschkaefer.de>]
560 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
561 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
562 support key and parameter generation and add initial key generation
563 functionality for RSA.
566 *) Add functions for main EVP_PKEY_method operations. The undocumented
567 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
568 EVP_PKEY_{encrypt,decrypt}_old.
571 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
572 key API, doesn't do much yet.
575 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
576 public key algorithms. New option to openssl utility:
577 "list-public-key-algorithms" to print out info.
580 *) Implement the Supported Elliptic Curves Extension for
581 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
584 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
585 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
588 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
589 utilities such as rsa, dsa, dsaparam etc except they process any key
593 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
594 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
595 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
599 *) Initial support for pluggable public key ASN1.
600 De-spaghettify the public key ASN1 handling. Move public and private
601 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
602 algorithm specific handling to a single module within the relevant
603 algorithm directory. Add functions to allow (near) opaque processing
604 of public and private key structures.
607 *) Implement the Supported Point Formats Extension for
608 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
611 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
612 for the psk identity [hint] and the psk callback functions to the
613 SSL_SESSION, SSL and SSL_CTX structure.
616 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
620 SSL_CTX_use_psk_identity_hint
621 SSL_get_psk_identity_hint
623 SSL_use_psk_identity_hint
625 [Mika Kousa and Pasi Eronen of Nokia Corporation]
627 *) Add RFC 3161 compliant time stamp request creation, response generation
628 and response verification functionality.
629 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
631 *) Add initial support for TLS extensions, specifically for the server_name
632 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
633 have new members for a host name. The SSL data structure has an
634 additional member SSL_CTX *initial_ctx so that new sessions can be
635 stored in that context to allow for session resumption, even after the
636 SSL has been switched to a new SSL_CTX in reaction to a client's
637 server_name extension.
639 New functions (subject to change):
642 SSL_get_servername_type()
645 New CTRL codes and macros (subject to change):
647 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
648 - SSL_CTX_set_tlsext_servername_callback()
649 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
650 - SSL_CTX_set_tlsext_servername_arg()
651 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
653 openssl s_client has a new '-servername ...' option.
655 openssl s_server has new options '-servername_host ...', '-cert2 ...',
656 '-key2 ...', '-servername_fatal' (subject to change). This allows
657 testing the HostName extension for a specific single host name ('-cert'
658 and '-key' remain fallbacks for handshakes without HostName
659 negotiation). If the unrecogninzed_name alert has to be sent, this by
660 default is a warning; it becomes fatal with the '-servername_fatal'
663 [Peter Sylvester, Remy Allais, Christophe Renou]
665 *) Whirlpool hash implementation is added.
668 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
669 bn(64,32). Because of instruction set limitations it doesn't have
670 any negative impact on performance. This was done mostly in order
671 to make it possible to share assembler modules, such as bn_mul_mont
672 implementations, between 32- and 64-bit builds without hassle.
675 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
676 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
680 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
681 dedicated Montgomery multiplication procedure, is introduced.
682 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
683 "64-bit" performance on certain 32-bit targets.
686 *) New option SSL_OP_NO_COMP to disable use of compression selectively
687 in SSL structures. New SSL ctrl to set maximum send fragment size.
688 Save memory by seeting the I/O buffer sizes dynamically instead of
689 using the maximum available value.
692 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
693 in addition to the text details.
696 *) Very, very preliminary EXPERIMENTAL support for printing of general
697 ASN1 structures. This currently produces rather ugly output and doesn't
698 handle several customised structures at all.
701 *) Integrated support for PVK file format and some related formats such
702 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
703 these in the 'rsa' and 'dsa' utilities.
706 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
709 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
710 place for the (very old) "NETSCAPE" format certificates which are now
711 handled using new ASN1 code equivalents.
714 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
715 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
716 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
719 *) Modify CRL distribution points extension code to print out previously
720 unsupported fields. Enhance extension setting code to allow setting of
724 *) Add print and set support for Issuing Distribution Point CRL extension.
727 *) Change 'Configure' script to enable Camellia by default.
730 Changes between 0.9.8i and 0.9.8j [xx XXX xxxx]
732 *) Allow the CHIL engine to be loaded, whether the application is
733 multithreaded or not. (This does not release the developer from the
734 obligation to set up the dynamic locking callbacks.)
735 [Sander Temme <sander@temme.net>]
737 *) Update Configure code and WIN32 build scripts to support experimental
738 code. This is surrounded by OPENSSL_EXPERIMENTAL_FOO and not compiled
739 in by default. Using the configuration option "enable-experimental-foo"
740 enables it. Use this option for JPAKE.
743 *) Use correct exit code if there is an error in dgst command.
744 [Steve Henson; problem pointed out by Roland Dirlewanger]
746 *) Add JPAKE support, including demo authentication in s_client and
750 *) Set the comparison function in v3_addr_canonize().
751 [Rob Austein <sra@hactrn.net>]
753 *) Add support for XMPP STARTTLS in s_client.
754 [Philip Paeps <philip@freebsd.org>]
756 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
757 to ensure that even with this option, only ciphersuites in the
758 server's preference list will be accepted. (Note that the option
759 applies only when resuming a session, so the earlier behavior was
760 just about the algorithm choice for symmetric cryptography.)
763 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
765 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
766 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
769 *) The fix in 0.9.8c that supposedly got rid of unsafe
770 double-checked locking was incomplete for RSA blinding,
771 addressing just one layer of what turns out to have been
772 doubly unsafe triple-checked locking.
774 So now fix this for real by retiring the MONT_HELPER macro
775 in crypto/rsa/rsa_eay.c.
777 [Bodo Moeller; problem pointed out by Marius Schilder]
779 *) Various precautionary measures:
781 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
783 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
784 (NB: This would require knowledge of the secret session ticket key
785 to exploit, in which case you'd be SOL either way.)
787 - Change bn_nist.c so that it will properly handle input BIGNUMs
788 outside the expected range.
790 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
793 [Neel Mehta, Bodo Moeller]
795 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
796 the load fails. Useful for distros.
797 [Ben Laurie and the FreeBSD team]
799 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
802 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
805 *) Expand ENGINE to support engine supplied SSL client certificate functions.
807 This work was sponsored by Logica.
810 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
811 keystores. Support for SSL/TLS client authentication too.
812 Not compiled unless enable-capieng specified to Configure.
814 This work was sponsored by Logica.
817 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
818 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
819 attribute creation routines such as certifcate requests and PKCS#12
823 Changes between 0.9.8g and 0.9.8h [28 May 2008]
825 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
826 handshake which could lead to a cilent crash as found using the
827 Codenomicon TLS test suite (CVE-2008-1672)
828 [Steve Henson, Mark Cox]
830 *) Fix double free in TLS server name extensions which could lead to
831 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
834 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
836 Clear the error queue to ensure that error entries left from
837 older function calls do not interfere with the correct operation.
838 [Lutz Jaenicke, Erik de Castro Lopo]
840 *) Remove root CA certificates of commercial CAs:
842 The OpenSSL project does not recommend any specific CA and does not
843 have any policy with respect to including or excluding any CA.
844 Therefore it does not make any sense to ship an arbitrary selection
845 of root CA certificates with the OpenSSL software.
848 *) RSA OAEP patches to fix two separate invalid memory reads.
849 The first one involves inputs when 'lzero' is greater than
850 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
851 before the beginning of from). The second one involves inputs where
852 the 'db' section contains nothing but zeroes (there is a one-byte
853 invalid read after the end of 'db').
854 [Ivan Nestlerode <inestlerode@us.ibm.com>]
856 *) Partial backport from 0.9.9-dev:
858 Introduce bn_mul_mont (dedicated Montgomery multiplication
859 procedure) as a candidate for BIGNUM assembler implementation.
860 While 0.9.9-dev uses assembler for various architectures, only
861 x86_64 is available by default here in the 0.9.8 branch, and
862 32-bit x86 is available through a compile-time setting.
864 To try the 32-bit x86 assembler implementation, use Configure
865 option "enable-montasm" (which exists only for this backport).
867 As "enable-montasm" for 32-bit x86 disclaims code stability
868 anyway, in this constellation we activate additional code
869 backported from 0.9.9-dev for further performance improvements,
870 namely BN_from_montgomery_word. (To enable this otherwise,
871 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
873 [Andy Polyakov (backport partially by Bodo Moeller)]
875 *) Add TLS session ticket callback. This allows an application to set
876 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
877 values. This is useful for key rollover for example where several key
878 sets may exist with different names.
881 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
882 This was broken until now in 0.9.8 releases, such that the only way
883 a registered ENGINE could be used (assuming it initialises
884 successfully on the host) was to explicitly set it as the default
885 for the relevant algorithms. This is in contradiction with 0.9.7
886 behaviour and the documentation. With this fix, when an ENGINE is
887 registered into a given algorithm's table of implementations, the
888 'uptodate' flag is reset so that auto-discovery will be used next
889 time a new context for that algorithm attempts to select an
891 [Ian Lister (tweaked by Geoff Thorpe)]
893 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
894 implemention in the following ways:
896 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
899 Lack of BER streaming support means one pass streaming processing is
900 only supported if data is detached: setting the streaming flag is
901 ignored for embedded content.
903 CMS support is disabled by default and must be explicitly enabled
904 with the enable-cms configuration option.
907 *) Update the GMP engine glue to do direct copies between BIGNUM and
908 mpz_t when openssl and GMP use the same limb size. Otherwise the
909 existing "conversion via a text string export" trick is still used.
910 [Paul Sheer <paulsheer@gmail.com>]
912 *) Zlib compression BIO. This is a filter BIO which compressed and
913 uncompresses any data passed through it.
916 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
917 RFC3394 compatible AES key wrapping.
920 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
921 sets string data without copying. X509_ALGOR_set0() and
922 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
923 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
924 from an X509_ATTRIBUTE structure optionally checking it occurs only
925 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
929 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
930 to get the expected BN_FLG_CONSTTIME behavior.
931 [Bodo Moeller (Google)]
935 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
936 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
937 - added some more tests to do_tests.pl
938 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
939 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
940 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
941 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
942 - various changes to netware.pl to enable gcc-cross builds on Win32
944 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
945 - various changes to fix missing prototype warnings
946 - fixed x86nasm.pl to create correct asm files for NASM COFF output
947 - added AES, WHIRLPOOL and CPUID assembler code to build files
948 - added missing AES assembler make rules to mk1mf.pl
949 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
950 [Guenter Knauf <eflash@gmx.net>]
952 *) Implement certificate status request TLS extension defined in RFC3546.
953 A client can set the appropriate parameters and receive the encoded
954 OCSP response via a callback. A server can query the supplied parameters
955 and set the encoded OCSP response in the callback. Add simplified examples
956 to s_client and s_server.
959 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
962 + Binary incompatibility of ssl_ctx_st structure
963 + DTLS interoperation with non-compliant servers
964 + Don't call get_session_cb() without proposed session
965 + Fix ia64 assembler code
966 [Andy Polyakov, Steve Henson]
968 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
970 *) DTLS Handshake overhaul. There were longstanding issues with
971 OpenSSL DTLS implementation, which were making it impossible for
972 RFC 4347 compliant client to communicate with OpenSSL server.
973 Unfortunately just fixing these incompatibilities would "cut off"
974 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
975 server keeps tolerating non RFC compliant syntax. The opposite is
976 not true, 0.9.8f client can not communicate with earlier server.
977 This update even addresses CVE-2007-4995.
980 *) Changes to avoid need for function casts in OpenSSL: some compilers
981 (gcc 4.2 and later) reject their use.
982 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
985 *) Add RFC4507 support to OpenSSL. This includes the corrections in
986 RFC4507bis. The encrypted ticket format is an encrypted encoded
987 SSL_SESSION structure, that way new session features are automatically
990 If a client application caches session in an SSL_SESSION structure
991 support is transparent because tickets are now stored in the encoded
994 The SSL_CTX structure automatically generates keys for ticket
995 protection in servers so again support should be possible
996 with no application modification.
998 If a client or server wishes to disable RFC4507 support then the option
999 SSL_OP_NO_TICKET can be set.
1001 Add a TLS extension debugging callback to allow the contents of any client
1002 or server extensions to be examined.
1004 This work was sponsored by Google.
1007 *) Add initial support for TLS extensions, specifically for the server_name
1008 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1009 have new members for a host name. The SSL data structure has an
1010 additional member SSL_CTX *initial_ctx so that new sessions can be
1011 stored in that context to allow for session resumption, even after the
1012 SSL has been switched to a new SSL_CTX in reaction to a client's
1013 server_name extension.
1015 New functions (subject to change):
1017 SSL_get_servername()
1018 SSL_get_servername_type()
1021 New CTRL codes and macros (subject to change):
1023 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1024 - SSL_CTX_set_tlsext_servername_callback()
1025 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1026 - SSL_CTX_set_tlsext_servername_arg()
1027 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1029 openssl s_client has a new '-servername ...' option.
1031 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1032 '-key2 ...', '-servername_fatal' (subject to change). This allows
1033 testing the HostName extension for a specific single host name ('-cert'
1034 and '-key' remain fallbacks for handshakes without HostName
1035 negotiation). If the unrecogninzed_name alert has to be sent, this by
1036 default is a warning; it becomes fatal with the '-servername_fatal'
1039 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1041 *) Add AES and SSE2 assembly language support to VC++ build.
1044 *) Mitigate attack on final subtraction in Montgomery reduction.
1047 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1048 (which previously caused an internal error).
1051 *) Squeeze another 10% out of IGE mode when in != out.
1054 *) AES IGE mode speedup.
1055 [Dean Gaudet (Google)]
1057 *) Add the Korean symmetric 128-bit cipher SEED (see
1058 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1059 add SEED ciphersuites from RFC 4162:
1061 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1062 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1063 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1064 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1066 To minimize changes between patchlevels in the OpenSSL 0.9.8
1067 series, SEED remains excluded from compilation unless OpenSSL
1068 is configured with 'enable-seed'.
1069 [KISA, Bodo Moeller]
1071 *) Mitigate branch prediction attacks, which can be practical if a
1072 single processor is shared, allowing a spy process to extract
1073 information. For detailed background information, see
1074 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1075 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1076 and Necessary Software Countermeasures"). The core of the change
1077 are new versions BN_div_no_branch() and
1078 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1079 respectively, which are slower, but avoid the security-relevant
1080 conditional branches. These are automatically called by BN_div()
1081 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1082 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1083 remove a conditional branch.
1085 BN_FLG_CONSTTIME is the new name for the previous
1086 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1087 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1088 in the exponent causes BN_mod_exp_mont() to use the alternative
1089 implementation in BN_mod_exp_mont_consttime().) The old name
1090 remains as a deprecated alias.
1092 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1093 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1094 constant-time implementations for more than just exponentiation.
1095 Here too the old name is kept as a deprecated alias.
1097 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1098 the BN_BLINDING structure gets an independent copy of the
1099 modulus. This means that the previous "BIGNUM *m" argument to
1100 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1101 essentially becomes "const BIGNUM *m", although we can't actually
1102 change this in the header file before 0.9.9. It allows
1103 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1104 enable BN_FLG_CONSTTIME.
1106 [Matthew D Wood (Intel Corp)]
1108 *) In the SSL/TLS server implementation, be strict about session ID
1109 context matching (which matters if an application uses a single
1110 external cache for different purposes). Previously,
1111 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1112 set. This did ensure strict client verification, but meant that,
1113 with applications using a single external cache for quite
1114 different requirements, clients could circumvent ciphersuite
1115 restrictions for a given session ID context by starting a session
1116 in a different context.
1119 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1120 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1121 authentication-only ciphersuites.
1124 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1125 not complete and could lead to a possible single byte overflow
1126 (CVE-2007-5135) [Ben Laurie]
1128 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1130 *) Since AES128 and AES256 (and similarly Camellia128 and
1131 Camellia256) share a single mask bit in the logic of
1132 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1133 kludge to work properly if AES128 is available and AES256 isn't
1134 (or if Camellia128 is available and Camellia256 isn't).
1137 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1138 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1139 When a point or a seed is encoded in a BIT STRING, we need to
1140 prevent the removal of trailing zero bits to get the proper DER
1141 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1142 of a NamedBitList, for which trailing 0 bits need to be removed.)
1145 *) Have SSL/TLS server implementation tolerate "mismatched" record
1146 protocol version while receiving ClientHello even if the
1147 ClientHello is fragmented. (The server can't insist on the
1148 particular protocol version it has chosen before the ServerHello
1149 message has informed the client about his choice.)
1152 *) Add RFC 3779 support.
1153 [Rob Austein for ARIN, Ben Laurie]
1155 *) Load error codes if they are not already present instead of using a
1156 static variable. This allows them to be cleanly unloaded and reloaded.
1157 Improve header file function name parsing.
1160 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1161 or CAPABILITY handshake as required by RFCs.
1164 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1166 *) Introduce limits to prevent malicious keys being able to
1167 cause a denial of service. (CVE-2006-2940)
1168 [Steve Henson, Bodo Moeller]
1170 *) Fix ASN.1 parsing of certain invalid structures that can result
1171 in a denial of service. (CVE-2006-2937) [Steve Henson]
1173 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1174 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1176 *) Fix SSL client code which could crash if connecting to a
1177 malicious SSLv2 server. (CVE-2006-4343)
1178 [Tavis Ormandy and Will Drewry, Google Security Team]
1180 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1181 match only those. Before that, "AES256-SHA" would be interpreted
1182 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1183 the same strength classification in 0.9.7h) as we currently only
1184 have a single AES bit in the ciphersuite description bitmap.
1185 That change, however, also applied to ciphersuite strings such as
1186 "RC4-MD5" that intentionally matched multiple ciphersuites --
1187 namely, SSL 2.0 ciphersuites in addition to the more common ones
1188 from SSL 3.0/TLS 1.0.
1190 So we change the selection algorithm again: Naming an explicit
1191 ciphersuite selects this one ciphersuite, and any other similar
1192 ciphersuite (same bitmap) from *other* protocol versions.
1193 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1194 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1196 Since SSL 2.0 does not have any ciphersuites for which the
1197 128/256 bit distinction would be relevant, this works for now.
1198 The proper fix will be to use different bits for AES128 and
1199 AES256, which would have avoided the problems from the beginning;
1200 however, bits are scarce, so we can only do this in a new release
1201 (not just a patchlevel) when we can change the SSL_CIPHER
1202 definition to split the single 'unsigned long mask' bitmap into
1203 multiple values to extend the available space.
1207 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1209 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1210 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1212 *) Add AES IGE and biIGE modes.
1215 *) Change the Unix randomness entropy gathering to use poll() when
1216 possible instead of select(), since the latter has some
1217 undesirable limitations.
1218 [Darryl Miles via Richard Levitte and Bodo Moeller]
1220 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1221 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1222 cannot be implicitly activated as part of, e.g., the "AES" alias.
1223 However, please upgrade to OpenSSL 0.9.9[-dev] for
1224 non-experimental use of the ECC ciphersuites to get TLS extension
1225 support, which is required for curve and point format negotiation
1226 to avoid potential handshake problems.
1229 *) Disable rogue ciphersuites:
1231 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1232 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1233 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1235 The latter two were purportedly from
1236 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1239 Also deactivate the remaining ciphersuites from
1240 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1241 unofficial, and the ID has long expired.
1244 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1245 dual-core machines) and other potential thread-safety issues.
1248 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1249 versions), which is now available for royalty-free use
1250 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1251 Also, add Camellia TLS ciphersuites from RFC 4132.
1253 To minimize changes between patchlevels in the OpenSSL 0.9.8
1254 series, Camellia remains excluded from compilation unless OpenSSL
1255 is configured with 'enable-camellia'.
1258 *) Disable the padding bug check when compression is in use. The padding
1259 bug check assumes the first packet is of even length, this is not
1260 necessarily true if compresssion is enabled and can result in false
1261 positives causing handshake failure. The actual bug test is ancient
1262 code so it is hoped that implementations will either have fixed it by
1263 now or any which still have the bug do not support compression.
1266 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1268 *) When applying a cipher rule check to see if string match is an explicit
1269 cipher suite and only match that one cipher suite if it is.
1272 *) Link in manifests for VC++ if needed.
1273 [Austin Ziegler <halostatue@gmail.com>]
1275 *) Update support for ECC-based TLS ciphersuites according to
1276 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1277 TLS extensions, which are supported starting with the 0.9.9
1278 branch, not in the OpenSSL 0.9.8 branch).
1281 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1282 opaque EVP_CIPHER_CTX handling.
1285 *) Fixes and enhancements to zlib compression code. We now only use
1286 "zlib1.dll" and use the default __cdecl calling convention on Win32
1287 to conform with the standards mentioned here:
1288 http://www.zlib.net/DLL_FAQ.txt
1289 Static zlib linking now works on Windows and the new --with-zlib-include
1290 --with-zlib-lib options to Configure can be used to supply the location
1291 of the headers and library. Gracefully handle case where zlib library
1295 *) Several fixes and enhancements to the OID generation code. The old code
1296 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1297 handle numbers larger than ULONG_MAX, truncated printing and had a
1298 non standard OBJ_obj2txt() behaviour.
1301 *) Add support for building of engines under engine/ as shared libraries
1302 under VC++ build system.
1305 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1306 Hopefully, we will not see any false combination of paths any more.
1309 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1311 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1312 (part of SSL_OP_ALL). This option used to disable the
1313 countermeasure against man-in-the-middle protocol-version
1314 rollback in the SSL 2.0 server implementation, which is a bad
1315 idea. (CVE-2005-2969)
1317 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1318 for Information Security, National Institute of Advanced Industrial
1319 Science and Technology [AIST], Japan)]
1321 *) Add two function to clear and return the verify parameter flags.
1324 *) Keep cipherlists sorted in the source instead of sorting them at
1325 runtime, thus removing the need for a lock.
1328 *) Avoid some small subgroup attacks in Diffie-Hellman.
1329 [Nick Mathewson and Ben Laurie]
1331 *) Add functions for well-known primes.
1334 *) Extended Windows CE support.
1335 [Satoshi Nakamura and Andy Polyakov]
1337 *) Initialize SSL_METHOD structures at compile time instead of during
1338 runtime, thus removing the need for a lock.
1341 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1342 attempting to decrypt each encrypted key in turn. Add support to
1346 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1348 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1351 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1354 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1355 key into the same file any more.
1358 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1361 *) Add -utf8 command line and config file option to 'ca'.
1362 [Stefan <stf@udoma.org]
1364 *) Removed the macro des_crypt(), as it seems to conflict with some
1365 libraries. Use DES_crypt().
1368 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1369 involves renaming the source and generated shared-libs for
1370 both. The engines will accept the corrected or legacy ids
1371 ('ncipher' and '4758_cca' respectively) when binding. NB,
1372 this only applies when building 'shared'.
1373 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1375 *) Add attribute functions to EVP_PKEY structure. Modify
1376 PKCS12_create() to recognize a CSP name attribute and
1377 use it. Make -CSP option work again in pkcs12 utility.
1380 *) Add new functionality to the bn blinding code:
1381 - automatic re-creation of the BN_BLINDING parameters after
1382 a fixed number of uses (currently 32)
1383 - add new function for parameter creation
1384 - introduce flags to control the update behaviour of the
1385 BN_BLINDING parameters
1386 - hide BN_BLINDING structure
1387 Add a second BN_BLINDING slot to the RSA structure to improve
1388 performance when a single RSA object is shared among several
1392 *) Add support for DTLS.
1393 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1395 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1396 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1399 *) Remove buggy and incompletet DH cert support from
1400 ssl/ssl_rsa.c and ssl/s3_both.c
1403 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1404 the apps/openssl applications.
1407 *) Compile clean with "-Wall -Wmissing-prototypes
1408 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1409 DEBUG_SAFESTACK must also be set.
1412 *) Change ./Configure so that certain algorithms can be disabled by default.
1413 The new counterpiece to "no-xxx" is "enable-xxx".
1415 The patented RC5 and MDC2 algorithms will now be disabled unless
1416 "enable-rc5" and "enable-mdc2", respectively, are specified.
1418 (IDEA remains enabled despite being patented. This is because IDEA
1419 is frequently required for interoperability, and there is no license
1420 fee for non-commercial use. As before, "no-idea" can be used to
1421 avoid this algorithm.)
1425 *) Add processing of proxy certificates (see RFC 3820). This work was
1426 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1427 EGEE (Enabling Grids for E-science in Europe).
1430 *) RC4 performance overhaul on modern architectures/implementations, such
1431 as Intel P4, IA-64 and AMD64.
1434 *) New utility extract-section.pl. This can be used specify an alternative
1435 section number in a pod file instead of having to treat each file as
1436 a separate case in Makefile. This can be done by adding two lines to the
1439 =for comment openssl_section:XXX
1441 The blank line is mandatory.
1445 *) New arguments -certform, -keyform and -pass for s_client and s_server
1446 to allow alternative format key and certificate files and passphrase
1450 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1451 update associated structures and add various utility functions.
1453 Add new policy related verify parameters, include policy checking in
1454 standard verify code. Enhance 'smime' application with extra parameters
1455 to support policy checking and print out.
1458 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1459 Nehemiah processors. These extensions support AES encryption in hardware
1460 as well as RNG (though RNG support is currently disabled).
1461 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1463 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1466 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1467 [Andy Polyakov and a number of other people]
1469 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1470 implementation contributed by IBM.
1471 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1473 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1474 exponent rather than 'unsigned long'. There is a corresponding change to
1475 the new 'rsa_keygen' element of the RSA_METHOD structure.
1476 [Jelte Jansen, Geoff Thorpe]
1478 *) Functionality for creating the initial serial number file is now
1479 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1481 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1482 number file to 1, which is bound to cause problems. To avoid
1483 the problems while respecting compatibility between different 0.9.7
1484 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1485 CA.pl for serial number initialization. With the new release 0.9.8,
1486 we can fix the problem directly in the 'ca' utility.)
1489 *) Reduced header interdepencies by declaring more opaque objects in
1490 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1491 give fewer recursive includes, which could break lazy source code - so
1492 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1493 developers should define this symbol when building and using openssl to
1494 ensure they track the recommended behaviour, interfaces, [etc], but
1495 backwards-compatible behaviour prevails when this isn't defined.
1498 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1501 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1502 This will generate a random key of the appropriate length based on the
1503 cipher context. The EVP_CIPHER can provide its own random key generation
1504 routine to support keys of a specific form. This is used in the des and
1505 3des routines to generate a key of the correct parity. Update S/MIME
1506 code to use new functions and hence generate correct parity DES keys.
1507 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1508 valid (weak or incorrect parity).
1511 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1512 as looking them up. This is useful when the verified structure may contain
1513 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1514 present unless the new PKCS7_NO_CRL flag is asserted.
1517 *) Extend ASN1 oid configuration module. It now additionally accepts the
1520 shortName = some long name, 1.2.3.4
1523 *) Reimplemented the BN_CTX implementation. There is now no more static
1524 limitation on the number of variables it can handle nor the depth of the
1525 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1526 information can now expand as required, and rather than having a single
1527 static array of bignums, BN_CTX now uses a linked-list of such arrays
1528 allowing it to expand on demand whilst maintaining the usefulness of
1529 BN_CTX's "bundling".
1532 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1533 to allow all RSA operations to function using a single BN_CTX.
1536 *) Preliminary support for certificate policy evaluation and checking. This
1537 is initially intended to pass the tests outlined in "Conformance Testing
1538 of Relying Party Client Certificate Path Processing Logic" v1.07.
1541 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1542 remained unused and not that useful. A variety of other little bignum
1543 tweaks and fixes have also been made continuing on from the audit (see
1547 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1548 associated ASN1, EVP and SSL functions and old ASN1 macros.
1551 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1552 and this should never fail. So the return value from the use of
1553 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1554 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1557 *) BN_CTX_get() should return zero-valued bignums, providing the same
1558 initialised value as BN_new().
1559 [Geoff Thorpe, suggested by Ulf Möller]
1561 *) Support for inhibitAnyPolicy certificate extension.
1564 *) An audit of the BIGNUM code is underway, for which debugging code is
1565 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1566 is considered valid when processing BIGNUMs, and causes execution to
1567 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1568 further steps are taken to deliberately pollute unused data in BIGNUM
1569 structures to try and expose faulty code further on. For now, openssl will
1570 (in its default mode of operation) continue to tolerate the inconsistent
1571 forms that it has tolerated in the past, but authors and packagers should
1572 consider trying openssl and their own applications when compiled with
1573 these debugging symbols defined. It will help highlight potential bugs in
1574 their own code, and will improve the test coverage for OpenSSL itself. At
1575 some point, these tighter rules will become openssl's default to improve
1576 maintainability, though the assert()s and other overheads will remain only
1577 in debugging configurations. See bn.h for more details.
1578 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1580 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1581 that can only be obtained through BN_CTX_new() (which implicitly
1582 initialises it). The presence of this function only made it possible
1583 to overwrite an existing structure (and cause memory leaks).
1586 *) Because of the callback-based approach for implementing LHASH as a
1587 template type, lh_insert() adds opaque objects to hash-tables and
1588 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1589 to clean up those corresponding objects before destroying the hash table
1590 (and losing the object pointers). So some over-zealous constifications in
1591 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1592 objects as "const" and the lh_doall[_arg] callback wrappers are not
1593 prototyped to have "const" restrictions on the object pointers they are
1594 given (and so aren't required to cast them away any more).
1597 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1598 (speed) prefers to use its own implementation. The two implementations
1599 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1600 its object type properly exposed (MS_TM) instead of casting to/from "char
1601 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1602 aren't necessarily the greatest nomenclatures - but this is what was used
1603 internally to the implementation so I've used that for now.
1606 *) Ensure that deprecated functions do not get compiled when
1607 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1608 the self-tests were still using deprecated key-generation functions so
1609 these have been updated also.
1612 *) Reorganise PKCS#7 code to separate the digest location functionality
1613 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1614 New function PKCS7_set_digest() to set the digest type for PKCS#7
1615 digestedData type. Add additional code to correctly generate the
1616 digestedData type and add support for this type in PKCS7 initialization
1620 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1621 structure of type "other".
1624 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1625 sure the loop does correctly stop and breaking ("division by zero")
1626 modulus operations are not performed. The (pre-generated) prime
1627 table crypto/bn/bn_prime.h was already correct, but it could not be
1628 re-generated on some platforms because of the "division by zero"
1629 situation in the script.
1630 [Ralf S. Engelschall]
1632 *) Update support for ECC-based TLS ciphersuites according to
1633 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1634 SHA-1 now is only used for "small" curves (where the
1635 representation of a field element takes up to 24 bytes); for
1636 larger curves, the field element resulting from ECDH is directly
1637 used as premaster secret.
1638 [Douglas Stebila (Sun Microsystems Laboratories)]
1640 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1641 curve secp160r1 to the tests.
1642 [Douglas Stebila (Sun Microsystems Laboratories)]
1644 *) Add the possibility to load symbols globally with DSO.
1645 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1647 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1648 control of the error stack.
1651 *) Add support for STORE in ENGINE.
1654 *) Add the STORE type. The intention is to provide a common interface
1655 to certificate and key stores, be they simple file-based stores, or
1656 HSM-type store, or LDAP stores, or...
1657 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1660 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1661 pass a list of arguments to any function as well as provide a way
1662 for a function to pass data back to the caller.
1665 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1666 works like BUF_strdup() but can be used to duplicate a portion of
1667 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1671 *) Add the function sk_find_ex() which works like sk_find(), but will
1672 return an index to an element even if an exact match couldn't be
1673 found. The index is guaranteed to point at the element where the
1674 searched-for key would be inserted to preserve sorting order.
1677 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1678 takes an extra flags argument for optional functionality. Currently,
1679 the following flags are defined:
1681 OBJ_BSEARCH_VALUE_ON_NOMATCH
1682 This one gets OBJ_bsearch_ex() to return a pointer to the first
1683 element where the comparing function returns a negative or zero
1686 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1687 This one gets OBJ_bsearch_ex() to return a pointer to the first
1688 element where the comparing function returns zero. This is useful
1689 if there are more than one element where the comparing function
1693 *) Make it possible to create self-signed certificates with 'openssl ca'
1694 in such a way that the self-signed certificate becomes part of the
1695 CA database and uses the same mechanisms for serial number generation
1696 as all other certificate signing. The new flag '-selfsign' enables
1697 this functionality. Adapt CA.sh and CA.pl.in.
1700 *) Add functionality to check the public key of a certificate request
1701 against a given private. This is useful to check that a certificate
1702 request can be signed by that key (self-signing).
1705 *) Make it possible to have multiple active certificates with the same
1706 subject in the CA index file. This is done only if the keyword
1707 'unique_subject' is set to 'no' in the main CA section (default
1708 if 'CA_default') of the configuration file. The value is saved
1709 with the database itself in a separate index attribute file,
1710 named like the index file with '.attr' appended to the name.
1713 *) Generate muti valued AVAs using '+' notation in config files for
1717 *) Support for nameConstraints certificate extension.
1720 *) Support for policyConstraints certificate extension.
1723 *) Support for policyMappings certificate extension.
1726 *) Make sure the default DSA_METHOD implementation only uses its
1727 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1728 and change its own handlers to be NULL so as to remove unnecessary
1729 indirection. This lets alternative implementations fallback to the
1730 default implementation more easily.
1733 *) Support for directoryName in GeneralName related extensions
1737 *) Make it possible to link applications using Makefile.shared.
1738 Make that possible even when linking against static libraries!
1741 *) Support for single pass processing for S/MIME signing. This now
1742 means that S/MIME signing can be done from a pipe, in addition
1743 cleartext signing (multipart/signed type) is effectively streaming
1744 and the signed data does not need to be all held in memory.
1746 This is done with a new flag PKCS7_STREAM. When this flag is set
1747 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1748 is done after the data is output (and digests calculated) in
1749 SMIME_write_PKCS7().
1752 *) Add full support for -rpath/-R, both in shared libraries and
1753 applications, at least on the platforms where it's known how
1757 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1758 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1759 will now compute a table of multiples of the generator that
1760 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1761 faster (notably in the case of a single point multiplication,
1762 scalar * generator).
1763 [Nils Larsch, Bodo Moeller]
1765 *) IPv6 support for certificate extensions. The various extensions
1766 which use the IP:a.b.c.d can now take IPv6 addresses using the
1767 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1771 *) Added an ENGINE that implements RSA by performing private key
1772 exponentiations with the GMP library. The conversions to and from
1773 GMP's mpz_t format aren't optimised nor are any montgomery forms
1774 cached, and on x86 it appears OpenSSL's own performance has caught up.
1775 However there are likely to be other architectures where GMP could
1776 provide a boost. This ENGINE is not built in by default, but it can be
1777 specified at Configure time and should be accompanied by the necessary
1778 linker additions, eg;
1779 ./config -DOPENSSL_USE_GMP -lgmp
1782 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1783 testing availability of engines with "-t" - the old behaviour is
1784 produced by increasing the feature's verbosity with "-tt".
1787 *) ECDSA routines: under certain error conditions uninitialized BN objects
1788 could be freed. Solution: make sure initialization is performed early
1789 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1793 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1794 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1795 software implementations. For DSA and DH, parameter generation can
1796 also be overriden by providing the appropriate method callbacks.
1799 *) Change the "progress" mechanism used in key-generation and
1800 primality testing to functions that take a new BN_GENCB pointer in
1801 place of callback/argument pairs. The new API functions have "_ex"
1802 postfixes and the older functions are reimplemented as wrappers for
1803 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1804 declarations of the old functions to help (graceful) attempts to
1805 migrate to the new functions. Also, the new key-generation API
1806 functions operate on a caller-supplied key-structure and return
1807 success/failure rather than returning a key or NULL - this is to
1808 help make "keygen" another member function of RSA_METHOD etc.
1810 Example for using the new callback interface:
1812 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1816 BN_GENCB_set(&my_cb, my_callback, my_arg);
1818 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1819 /* For the meaning of a, b in calls to my_callback(), see the
1820 * documentation of the function that calls the callback.
1821 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1822 * my_callback should return 1 if it wants BN_is_prime_ex()
1823 * to continue, or 0 to stop.
1828 *) Change the ZLIB compression method to be stateful, and make it
1829 available to TLS with the number defined in
1830 draft-ietf-tls-compression-04.txt.
1833 *) Add the ASN.1 structures and functions for CertificatePair, which
1834 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1836 CertificatePair ::= SEQUENCE {
1837 forward [0] Certificate OPTIONAL,
1838 reverse [1] Certificate OPTIONAL,
1839 -- at least one of the pair shall be present -- }
1841 Also implement the PEM functions to read and write certificate
1842 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1844 This needed to be defined, mostly for the sake of the LDAP
1845 attribute crossCertificatePair, but may prove useful elsewhere as
1849 *) Make it possible to inhibit symlinking of shared libraries in
1850 Makefile.shared, for Cygwin's sake.
1853 *) Extend the BIGNUM API by creating a function
1854 void BN_set_negative(BIGNUM *a, int neg);
1855 and a macro that behave like
1856 int BN_is_negative(const BIGNUM *a);
1858 to avoid the need to access 'a->neg' directly in applications.
1861 *) Implement fast modular reduction for pseudo-Mersenne primes
1862 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1863 EC_GROUP_new_curve_GFp() will now automatically use this
1865 [Nils Larsch <nla@trustcenter.de>]
1867 *) Add new lock type (CRYPTO_LOCK_BN).
1870 *) Change the ENGINE framework to automatically load engines
1871 dynamically from specific directories unless they could be
1872 found to already be built in or loaded. Move all the
1873 current engines except for the cryptodev one to a new
1875 The engines in engines/ are built as shared libraries if
1876 the "shared" options was given to ./Configure or ./config.
1877 Otherwise, they are inserted in libcrypto.a.
1878 /usr/local/ssl/engines is the default directory for dynamic
1879 engines, but that can be overriden at configure time through
1880 the usual use of --prefix and/or --openssldir, and at run
1881 time with the environment variable OPENSSL_ENGINES.
1882 [Geoff Thorpe and Richard Levitte]
1884 *) Add Makefile.shared, a helper makefile to build shared
1885 libraries. Addapt Makefile.org.
1888 *) Add version info to Win32 DLLs.
1889 [Peter 'Luna' Runestig" <peter@runestig.com>]
1891 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1892 can be added using this API to created arbitrary PKCS#12
1893 files while avoiding the low level API.
1895 New options to PKCS12_create(), key or cert can be NULL and
1896 will then be omitted from the output file. The encryption
1897 algorithm NIDs can be set to -1 for no encryption, the mac
1898 iteration count can be set to 0 to omit the mac.
1900 Enhance pkcs12 utility by making the -nokeys and -nocerts
1901 options work when creating a PKCS#12 file. New option -nomac
1902 to omit the mac, NONE can be set for an encryption algorithm.
1903 New code is modified to use the enhanced PKCS12_create()
1904 instead of the low level API.
1907 *) Extend ASN1 encoder to support indefinite length constructed
1908 encoding. This can output sequences tags and octet strings in
1909 this form. Modify pk7_asn1.c to support indefinite length
1910 encoding. This is experimental and needs additional code to
1911 be useful, such as an ASN1 bio and some enhanced streaming
1914 Extend template encode functionality so that tagging is passed
1915 down to the template encoder.
1918 *) Let 'openssl req' fail if an argument to '-newkey' is not
1919 recognized instead of using RSA as a default.
1922 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1923 As these are not official, they are not included in "ALL";
1924 the "ECCdraft" ciphersuite group alias can be used to select them.
1925 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1927 *) Add ECDH engine support.
1928 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1930 *) Add ECDH in new directory crypto/ecdh/.
1931 [Douglas Stebila (Sun Microsystems Laboratories)]
1933 *) Let BN_rand_range() abort with an error after 100 iterations
1934 without success (which indicates a broken PRNG).
1937 *) Change BN_mod_sqrt() so that it verifies that the input value
1938 is really the square of the return value. (Previously,
1939 BN_mod_sqrt would show GIGO behaviour.)
1942 *) Add named elliptic curves over binary fields from X9.62, SECG,
1943 and WAP/WTLS; add OIDs that were still missing.
1945 [Sheueling Chang Shantz and Douglas Stebila
1946 (Sun Microsystems Laboratories)]
1948 *) Extend the EC library for elliptic curves over binary fields
1949 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1952 EC_GF2m_simple_method
1956 EC_GROUP_new_curve_GF2m
1957 EC_GROUP_set_curve_GF2m
1958 EC_GROUP_get_curve_GF2m
1959 EC_POINT_set_affine_coordinates_GF2m
1960 EC_POINT_get_affine_coordinates_GF2m
1961 EC_POINT_set_compressed_coordinates_GF2m
1963 Point compression for binary fields is disabled by default for
1964 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1967 As binary polynomials are represented as BIGNUMs, various members
1968 of the EC_GROUP and EC_POINT data structures can be shared
1969 between the implementations for prime fields and binary fields;
1970 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1971 are essentially identical to their ..._GFp counterparts.
1972 (For simplicity, the '..._GFp' prefix has been dropped from
1973 various internal method names.)
1975 An internal 'field_div' method (similar to 'field_mul' and
1976 'field_sqr') has been added; this is used only for binary fields.
1978 [Sheueling Chang Shantz and Douglas Stebila
1979 (Sun Microsystems Laboratories)]
1981 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1982 through methods ('mul', 'precompute_mult').
1984 The generic implementations (now internally called 'ec_wNAF_mul'
1985 and 'ec_wNAF_precomputed_mult') remain the default if these
1986 methods are undefined.
1988 [Sheueling Chang Shantz and Douglas Stebila
1989 (Sun Microsystems Laboratories)]
1991 *) New function EC_GROUP_get_degree, which is defined through
1992 EC_METHOD. For curves over prime fields, this returns the bit
1993 length of the modulus.
1995 [Sheueling Chang Shantz and Douglas Stebila
1996 (Sun Microsystems Laboratories)]
1998 *) New functions EC_GROUP_dup, EC_POINT_dup.
1999 (These simply call ..._new and ..._copy).
2001 [Sheueling Chang Shantz and Douglas Stebila
2002 (Sun Microsystems Laboratories)]
2004 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2005 Polynomials are represented as BIGNUMs (where the sign bit is not
2006 used) in the following functions [macros]:
2009 BN_GF2m_sub [= BN_GF2m_add]
2010 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2011 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2012 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2014 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2015 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2016 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2017 BN_GF2m_cmp [= BN_ucmp]
2019 (Note that only the 'mod' functions are actually for fields GF(2^m).
2020 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2022 For some functions, an the irreducible polynomial defining a
2023 field can be given as an 'unsigned int[]' with strictly
2024 decreasing elements giving the indices of those bits that are set;
2025 i.e., p[] represents the polynomial
2026 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2028 p[0] > p[1] > ... > p[k] = 0.
2029 This applies to the following functions:
2034 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2035 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2037 BN_GF2m_mod_sqrt_arr
2038 BN_GF2m_mod_solve_quad_arr
2042 Conversion can be performed by the following functions:
2047 bntest.c has additional tests for binary polynomial arithmetic.
2049 Two implementations for BN_GF2m_mod_div() are available.
2050 The default algorithm simply uses BN_GF2m_mod_inv() and
2051 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2052 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2053 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2055 [Sheueling Chang Shantz and Douglas Stebila
2056 (Sun Microsystems Laboratories)]
2058 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2059 functionality is disabled at compile-time.
2060 [Douglas Stebila <douglas.stebila@sun.com>]
2062 *) Change default behaviour of 'openssl asn1parse' so that more
2063 information is visible when viewing, e.g., a certificate:
2065 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2066 mode the content of non-printable OCTET STRINGs is output in a
2067 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2068 avoid the appearance of a printable string.
2069 [Nils Larsch <nla@trustcenter.de>]
2071 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2073 EC_GROUP_set_asn1_flag()
2074 EC_GROUP_get_asn1_flag()
2075 EC_GROUP_set_point_conversion_form()
2076 EC_GROUP_get_point_conversion_form()
2077 These control ASN1 encoding details:
2078 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2079 has been set to OPENSSL_EC_NAMED_CURVE.
2080 - Points are encoded in uncompressed form by default; options for
2081 asn1_for are as for point2oct, namely
2082 POINT_CONVERSION_COMPRESSED
2083 POINT_CONVERSION_UNCOMPRESSED
2084 POINT_CONVERSION_HYBRID
2086 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2089 EC_GROUP_get0_seed()
2090 EC_GROUP_get_seed_len()
2091 This is used only for ASN1 purposes (so far).
2092 [Nils Larsch <nla@trustcenter.de>]
2094 *) Add 'field_type' member to EC_METHOD, which holds the NID
2095 of the appropriate field type OID. The new function
2096 EC_METHOD_get_field_type() returns this value.
2097 [Nils Larsch <nla@trustcenter.de>]
2102 EC_POINT_point2hex()
2103 EC_POINT_hex2point()
2104 providing useful interfaces to EC_POINT_point2oct() and
2105 EC_POINT_oct2point().
2106 [Nils Larsch <nla@trustcenter.de>]
2108 *) Change internals of the EC library so that the functions
2109 EC_GROUP_set_generator()
2110 EC_GROUP_get_generator()
2111 EC_GROUP_get_order()
2112 EC_GROUP_get_cofactor()
2113 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2114 to methods, which would lead to unnecessary code duplication when
2115 adding different types of curves.
2116 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2118 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2119 arithmetic, and such that modified wNAFs are generated
2120 (which avoid length expansion in many cases).
2123 *) Add a function EC_GROUP_check_discriminant() (defined via
2124 EC_METHOD) that verifies that the curve discriminant is non-zero.
2126 Add a function EC_GROUP_check() that makes some sanity tests
2127 on a EC_GROUP, its generator and order. This includes
2128 EC_GROUP_check_discriminant().
2129 [Nils Larsch <nla@trustcenter.de>]
2131 *) Add ECDSA in new directory crypto/ecdsa/.
2133 Add applications 'openssl ecparam' and 'openssl ecdsa'
2134 (these are based on 'openssl dsaparam' and 'openssl dsa').
2136 ECDSA support is also included in various other files across the
2137 library. Most notably,
2138 - 'openssl req' now has a '-newkey ecdsa:file' option;
2139 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2140 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2141 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2142 them suitable for ECDSA where domain parameters must be
2143 extracted before the specific public key;
2144 - ECDSA engine support has been added.
2145 [Nils Larsch <nla@trustcenter.de>]
2147 *) Include some named elliptic curves, and add OIDs from X9.62,
2148 SECG, and WAP/WTLS. Each curve can be obtained from the new
2150 EC_GROUP_new_by_curve_name(),
2151 and the list of available named curves can be obtained with
2152 EC_get_builtin_curves().
2153 Also add a 'curve_name' member to EC_GROUP objects, which can be
2155 EC_GROUP_set_curve_name()
2156 EC_GROUP_get_curve_name()
2157 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2159 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2160 was actually never needed) and in BN_mul(). The removal in BN_mul()
2161 required a small change in bn_mul_part_recursive() and the addition
2162 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2163 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2164 bn_sub_words() and bn_add_words() except they take arrays with
2168 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
2170 *) In the SSL/TLS server implementation, be strict about session ID
2171 context matching (which matters if an application uses a single
2172 external cache for different purposes). Previously,
2173 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2174 set. This did ensure strict client verification, but meant that,
2175 with applications using a single external cache for quite
2176 different requirements, clients could circumvent ciphersuite
2177 restrictions for a given session ID context by starting a session
2178 in a different context.
2181 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2183 *) Cleanse PEM buffers before freeing them since they may contain
2185 [Benjamin Bennett <ben@psc.edu>]
2187 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2188 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2189 authentication-only ciphersuites.
2192 *) Since AES128 and AES256 share a single mask bit in the logic of
2193 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2194 kludge to work properly if AES128 is available and AES256 isn't.
2197 *) Expand security boundary to match 1.1.1 module.
2200 *) Remove redundant features: hash file source, editing of test vectors
2201 modify fipsld to use external fips_premain.c signature.
2204 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2205 run algorithm test programs.
2208 *) Make algorithm test programs more tolerant of whitespace.
2211 *) Have SSL/TLS server implementation tolerate "mismatched" record
2212 protocol version while receiving ClientHello even if the
2213 ClientHello is fragmented. (The server can't insist on the
2214 particular protocol version it has chosen before the ServerHello
2215 message has informed the client about his choice.)
2218 *) Load error codes if they are not already present instead of using a
2219 static variable. This allows them to be cleanly unloaded and reloaded.
2222 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2224 *) Introduce limits to prevent malicious keys being able to
2225 cause a denial of service. (CVE-2006-2940)
2226 [Steve Henson, Bodo Moeller]
2228 *) Fix ASN.1 parsing of certain invalid structures that can result
2229 in a denial of service. (CVE-2006-2937) [Steve Henson]
2231 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2232 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2234 *) Fix SSL client code which could crash if connecting to a
2235 malicious SSLv2 server. (CVE-2006-4343)
2236 [Tavis Ormandy and Will Drewry, Google Security Team]
2238 *) Change ciphersuite string processing so that an explicit
2239 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2240 will no longer include "AES128-SHA"), and any other similar
2241 ciphersuite (same bitmap) from *other* protocol versions (so that
2242 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2243 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2244 changes from 0.9.8b and 0.9.8d.
2247 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2249 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2250 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2252 *) Change the Unix randomness entropy gathering to use poll() when
2253 possible instead of select(), since the latter has some
2254 undesirable limitations.
2255 [Darryl Miles via Richard Levitte and Bodo Moeller]
2257 *) Disable rogue ciphersuites:
2259 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2260 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2261 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2263 The latter two were purportedly from
2264 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2267 Also deactive the remaining ciphersuites from
2268 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2269 unofficial, and the ID has long expired.
2272 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2273 dual-core machines) and other potential thread-safety issues.
2276 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2278 *) Adapt fipsld and the build system to link against the validated FIPS
2279 module in FIPS mode.
2282 *) Fixes for VC++ 2005 build under Windows.
2285 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2286 from a Windows bash shell such as MSYS. It is autodetected from the
2287 "config" script when run from a VC++ environment. Modify standard VC++
2288 build to use fipscanister.o from the GNU make build.
2291 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2293 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2294 The value now differs depending on if you build for FIPS or not.
2295 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2296 safely run with a non-FIPSed libcrypto, as it may crash because of
2297 the difference induced by this change.
2300 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2302 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2303 (part of SSL_OP_ALL). This option used to disable the
2304 countermeasure against man-in-the-middle protocol-version
2305 rollback in the SSL 2.0 server implementation, which is a bad
2306 idea. (CVE-2005-2969)
2308 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2309 for Information Security, National Institute of Advanced Industrial
2310 Science and Technology [AIST], Japan)]
2312 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2313 mainly for FIPS compliance and not fully integrated at this stage.
2316 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2317 the exponentiation using a fixed-length exponent. (Otherwise,
2318 the information leaked through timing could expose the secret key
2319 after many signatures; cf. Bleichenbacher's attack on DSA with
2323 *) Make a new fixed-window mod_exp implementation the default for
2324 RSA, DSA, and DH private-key operations so that the sequence of
2325 squares and multiplies and the memory access pattern are
2326 independent of the particular secret key. This will mitigate
2327 cache-timing and potential related attacks.
2329 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2330 and this is automatically used by BN_mod_exp_mont() if the new flag
2331 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2332 will use this BN flag for private exponents unless the flag
2333 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2334 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2336 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2338 *) Change the client implementation for SSLv23_method() and
2339 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2340 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2341 (Previously, the SSL 2.0 backwards compatible Client Hello
2342 message format would be used even with SSL_OP_NO_SSLv2.)
2345 *) Add support for smime-type MIME parameter in S/MIME messages which some
2349 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2350 a threadsafe manner. Modify rsa code to use new function and add calls
2351 to dsa and dh code (which had race conditions before).
2354 *) Include the fixed error library code in the C error file definitions
2355 instead of fixing them up at runtime. This keeps the error code
2356 structures constant.
2359 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2361 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2364 *) Fixes for newer kerberos headers. NB: the casts are needed because
2365 the 'length' field is signed on one version and unsigned on another
2366 with no (?) obvious way to tell the difference, without these VC++
2367 complains. Also the "definition" of FAR (blank) is no longer included
2368 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2369 some needed definitions.
2372 *) Undo Cygwin change.
2375 *) Added support for proxy certificates according to RFC 3820.
2376 Because they may be a security thread to unaware applications,
2377 they must be explicitely allowed in run-time. See
2378 docs/HOWTO/proxy_certificates.txt for further information.
2381 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2383 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2384 server and client random values. Previously
2385 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2386 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2388 This change has negligible security impact because:
2390 1. Server and client random values still have 24 bytes of pseudo random
2393 2. Server and client random values are sent in the clear in the initial
2396 3. The master secret is derived using the premaster secret (48 bytes in
2397 size for static RSA ciphersuites) as well as client server and random
2400 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2403 [Stephen Henson, reported by UK NISCC]
2405 *) Use Windows randomness collection on Cygwin.
2408 *) Fix hang in EGD/PRNGD query when communication socket is closed
2409 prematurely by EGD/PRNGD.
2410 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2412 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2415 *) Back-port of selected performance improvements from development
2416 branch, as well as improved support for PowerPC platforms.
2419 *) Add lots of checks for memory allocation failure, error codes to indicate
2420 failure and freeing up memory if a failure occurs.
2421 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2423 *) Add new -passin argument to dgst.
2426 *) Perform some character comparisons of different types in X509_NAME_cmp:
2427 this is needed for some certificates that reencode DNs into UTF8Strings
2428 (in violation of RFC3280) and can't or wont issue name rollover
2432 *) Make an explicit check during certificate validation to see that
2433 the CA setting in each certificate on the chain is correct. As a
2434 side effect always do the following basic checks on extensions,
2435 not just when there's an associated purpose to the check:
2437 - if there is an unhandled critical extension (unless the user
2438 has chosen to ignore this fault)
2439 - if the path length has been exceeded (if one is set at all)
2440 - that certain extensions fit the associated purpose (if one has
2444 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2446 *) Avoid a race condition when CRLs are checked in a multi threaded
2447 environment. This would happen due to the reordering of the revoked
2448 entries during signature checking and serial number lookup. Now the
2449 encoding is cached and the serial number sort performed under a lock.
2450 Add new STACK function sk_is_sorted().
2453 *) Add Delta CRL to the extension code.
2456 *) Various fixes to s3_pkt.c so alerts are sent properly.
2457 [David Holmes <d.holmes@f5.com>]
2459 *) Reduce the chances of duplicate issuer name and serial numbers (in
2460 violation of RFC3280) using the OpenSSL certificate creation utilities.
2461 This is done by creating a random 64 bit value for the initial serial
2462 number when a serial number file is created or when a self signed
2463 certificate is created using 'openssl req -x509'. The initial serial
2464 number file is created using 'openssl x509 -next_serial' in CA.pl
2465 rather than being initialized to 1.
2468 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2470 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2471 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2472 [Joe Orton, Steve Henson]
2474 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2476 [Joe Orton, Steve Henson]
2478 *) Make it possible to have multiple active certificates with the same
2479 subject in the CA index file. This is done only if the keyword
2480 'unique_subject' is set to 'no' in the main CA section (default
2481 if 'CA_default') of the configuration file. The value is saved
2482 with the database itself in a separate index attribute file,
2483 named like the index file with '.attr' appended to the name.
2486 *) X509 verify fixes. Disable broken certificate workarounds when
2487 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2488 keyUsage extension present. Don't accept CRLs with unhandled critical
2489 extensions: since verify currently doesn't process CRL extensions this
2490 rejects a CRL with *any* critical extensions. Add new verify error codes
2494 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2495 A clarification of RFC2560 will require the use of OCTET STRINGs and
2496 some implementations cannot handle the current raw format. Since OpenSSL
2497 copies and compares OCSP nonces as opaque blobs without any attempt at
2498 parsing them this should not create any compatibility issues.
2501 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2502 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2503 this HMAC (and other) operations are several times slower than OpenSSL
2507 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2508 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2510 *) Use the correct content when signing type "other".
2513 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2515 *) Fix various bugs revealed by running the NISCC test suite:
2517 Stop out of bounds reads in the ASN1 code when presented with
2518 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2520 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2522 If verify callback ignores invalid public key errors don't try to check
2523 certificate signature with the NULL public key.
2527 *) New -ignore_err option in ocsp application to stop the server
2528 exiting on the first error in a request.
2531 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2532 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2536 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2537 extra data after the compression methods not only for TLS 1.0
2538 but also for SSL 3.0 (as required by the specification).
2539 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2541 *) Change X509_certificate_type() to mark the key as exported/exportable
2542 when it's 512 *bits* long, not 512 bytes.
2545 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2546 blocks during encryption.
2549 *) Various fixes to base64 BIO and non blocking I/O. On write
2550 flushes were not handled properly if the BIO retried. On read
2551 data was not being buffered properly and had various logic bugs.
2552 This also affects blocking I/O when the data being decoded is a
2556 *) Various S/MIME bugfixes and compatibility changes:
2557 output correct application/pkcs7 MIME type if
2558 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2559 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2560 of files as .eml work). Correctly handle very long lines in MIME
2564 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2566 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2567 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2568 a protocol version number mismatch like a decryption error
2569 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2572 *) Turn on RSA blinding by default in the default implementation
2573 to avoid a timing attack. Applications that don't want it can call
2574 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2575 They would be ill-advised to do so in most cases.
2576 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2578 *) Change RSA blinding code so that it works when the PRNG is not
2579 seeded (in this case, the secret RSA exponent is abused as
2580 an unpredictable seed -- if it is not unpredictable, there
2581 is no point in blinding anyway). Make RSA blinding thread-safe
2582 by remembering the creator's thread ID in rsa->blinding and
2583 having all other threads use local one-time blinding factors
2584 (this requires more computation than sharing rsa->blinding, but
2585 avoids excessive locking; and if an RSA object is not shared
2586 between threads, blinding will still be very fast).
2589 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2590 ENGINE as defaults for all supported algorithms irrespective of
2591 the 'flags' parameter. 'flags' is now honoured, so applications
2592 should make sure they are passing it correctly.
2595 *) Target "mingw" now allows native Windows code to be generated in
2596 the Cygwin environment as well as with the MinGW compiler.
2599 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2601 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2602 via timing by performing a MAC computation even if incorrrect
2603 block cipher padding has been found. This is a countermeasure
2604 against active attacks where the attacker has to distinguish
2605 between bad padding and a MAC verification error. (CVE-2003-0078)
2607 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2608 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2609 Martin Vuagnoux (EPFL, Ilion)]
2611 *) Make the no-err option work as intended. The intention with no-err
2612 is not to have the whole error stack handling routines removed from
2613 libcrypto, it's only intended to remove all the function name and
2614 reason texts, thereby removing some of the footprint that may not
2615 be interesting if those errors aren't displayed anyway.
2617 NOTE: it's still possible for any application or module to have it's
2618 own set of error texts inserted. The routines are there, just not
2619 used by default when no-err is given.
2622 *) Add support for FreeBSD on IA64.
2623 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2625 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2626 Kerberos function mit_des_cbc_cksum(). Before this change,
2627 the value returned by DES_cbc_cksum() was like the one from
2628 mit_des_cbc_cksum(), except the bytes were swapped.
2629 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2631 *) Allow an application to disable the automatic SSL chain building.
2632 Before this a rather primitive chain build was always performed in
2633 ssl3_output_cert_chain(): an application had no way to send the
2634 correct chain if the automatic operation produced an incorrect result.
2636 Now the chain builder is disabled if either:
2638 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2640 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2642 The reasoning behind this is that an application would not want the
2643 auto chain building to take place if extra chain certificates are
2644 present and it might also want a means of sending no additional
2645 certificates (for example the chain has two certificates and the
2649 *) Add the possibility to build without the ENGINE framework.
2650 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2652 *) Under Win32 gmtime() can return NULL: check return value in
2653 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2656 *) DSA routines: under certain error conditions uninitialized BN objects
2657 could be freed. Solution: make sure initialization is performed early
2658 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2659 Nils Larsch <nla@trustcenter.de> via PR#459)
2662 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2663 checked on reconnect on the client side, therefore session resumption
2664 could still fail with a "ssl session id is different" error. This
2665 behaviour is masked when SSL_OP_ALL is used due to
2666 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2667 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2668 followup to PR #377.
2671 *) IA-32 assembler support enhancements: unified ELF targets, support
2672 for SCO/Caldera platforms, fix for Cygwin shared build.
2675 *) Add support for FreeBSD on sparc64. As a consequence, support for
2676 FreeBSD on non-x86 processors is separate from x86 processors on
2677 the config script, much like the NetBSD support.
2678 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2680 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2682 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2685 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2686 code (06) was taken as the first octet of the session ID and the last
2687 octet was ignored consequently. As a result SSLv2 client side session
2688 caching could not have worked due to the session ID mismatch between
2690 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2694 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2695 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2699 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2700 seems that in spite of existing for more than a year, many application
2701 author have done nothing to provide the necessary callbacks, which
2702 means that this particular engine will not work properly anywhere.
2703 This is a very unfortunate situation which forces us, in the name
2704 of usability, to give the hw_ncipher.c a static lock, which is part
2706 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2707 appear in 0.9.8 or later. We EXPECT application authors to have
2708 dealt properly with this when 0.9.8 is released (unless we actually
2709 make such changes in the libcrypto locking code that changes will
2710 have to be made anyway).
2713 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2714 octets have been read, EOF or an error occurs. Without this change
2715 some truncated ASN1 structures will not produce an error.
2718 *) Disable Heimdal support, since it hasn't been fully implemented.
2719 Still give the possibility to force the use of Heimdal, but with
2720 warnings and a request that patches get sent to openssl-dev.
2723 *) Add the VC-CE target, introduce the WINCE sysname, and add
2724 INSTALL.WCE and appropriate conditionals to make it build.
2725 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2727 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2728 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2729 edit numbers of the version.
2730 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2732 *) Introduce safe string copy and catenation functions
2733 (BUF_strlcpy() and BUF_strlcat()).
2734 [Ben Laurie (CHATS) and Richard Levitte]
2736 *) Avoid using fixed-size buffers for one-line DNs.
2737 [Ben Laurie (CHATS)]
2739 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2740 resizing buffers containing secrets, and use where appropriate.
2741 [Ben Laurie (CHATS)]
2743 *) Avoid using fixed size buffers for configuration file location.
2744 [Ben Laurie (CHATS)]
2746 *) Avoid filename truncation for various CA files.
2747 [Ben Laurie (CHATS)]
2749 *) Use sizeof in preference to magic numbers.
2750 [Ben Laurie (CHATS)]
2752 *) Avoid filename truncation in cert requests.
2753 [Ben Laurie (CHATS)]
2755 *) Add assertions to check for (supposedly impossible) buffer
2757 [Ben Laurie (CHATS)]
2759 *) Don't cache truncated DNS entries in the local cache (this could
2760 potentially lead to a spoofing attack).
2761 [Ben Laurie (CHATS)]
2763 *) Fix various buffers to be large enough for hex/decimal
2764 representations in a platform independent manner.
2765 [Ben Laurie (CHATS)]
2767 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2768 resizing buffers containing secrets, and use where appropriate.
2769 [Ben Laurie (CHATS)]
2771 *) Add BIO_indent() to avoid much slightly worrying code to do
2773 [Ben Laurie (CHATS)]
2775 *) Convert sprintf()/BIO_puts() to BIO_printf().
2776 [Ben Laurie (CHATS)]
2778 *) buffer_gets() could terminate with the buffer only half
2780 [Ben Laurie (CHATS)]
2782 *) Add assertions to prevent user-supplied crypto functions from
2783 overflowing internal buffers by having large block sizes, etc.
2784 [Ben Laurie (CHATS)]
2786 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2788 [Ben Laurie (CHATS)]
2790 *) Eliminate unused copy of key in RC4.
2791 [Ben Laurie (CHATS)]
2793 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2794 [Ben Laurie (CHATS)]
2796 *) Fix off-by-one error in EGD path.
2797 [Ben Laurie (CHATS)]
2799 *) If RANDFILE path is too long, ignore instead of truncating.
2800 [Ben Laurie (CHATS)]
2802 *) Eliminate unused and incorrectly sized X.509 structure
2804 [Ben Laurie (CHATS)]
2806 *) Eliminate unused and dangerous function knumber().
2807 [Ben Laurie (CHATS)]
2809 *) Eliminate unused and dangerous structure, KSSL_ERR.
2810 [Ben Laurie (CHATS)]
2812 *) Protect against overlong session ID context length in an encoded
2813 session object. Since these are local, this does not appear to be
2815 [Ben Laurie (CHATS)]
2817 *) Change from security patch (see 0.9.6e below) that did not affect
2818 the 0.9.6 release series:
2820 Remote buffer overflow in SSL3 protocol - an attacker could
2821 supply an oversized master key in Kerberos-enabled versions.
2823 [Ben Laurie (CHATS)]
2825 *) Change the SSL kerb5 codes to match RFC 2712.
2828 *) Make -nameopt work fully for req and add -reqopt switch.
2829 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2831 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2832 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2834 *) Make sure tests can be performed even if the corresponding algorithms
2835 have been removed entirely. This was also the last step to make
2836 OpenSSL compilable with DJGPP under all reasonable conditions.
2837 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2839 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2840 to allow version independent disabling of normally unselected ciphers,
2841 which may be activated as a side-effect of selecting a single cipher.
2843 (E.g., cipher list string "RSA" enables ciphersuites that are left
2844 out of "ALL" because they do not provide symmetric encryption.
2845 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2846 [Lutz Jaenicke, Bodo Moeller]
2848 *) Add appropriate support for separate platform-dependent build
2849 directories. The recommended way to make a platform-dependent
2850 build directory is the following (tested on Linux), maybe with
2853 # Place yourself outside of the OpenSSL source tree. In
2854 # this example, the environment variable OPENSSL_SOURCE
2855 # is assumed to contain the absolute OpenSSL source directory.
2856 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2857 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2858 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2859 mkdir -p `dirname $F`
2860 ln -s $OPENSSL_SOURCE/$F $F
2863 To be absolutely sure not to disturb the source tree, a "make clean"
2864 is a good thing. If it isn't successfull, don't worry about it,
2865 it probably means the source directory is very clean.
2868 *) Make sure any ENGINE control commands make local copies of string
2869 pointers passed to them whenever necessary. Otherwise it is possible
2870 the caller may have overwritten (or deallocated) the original string
2871 data when a later ENGINE operation tries to use the stored values.
2872 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2874 *) Improve diagnostics in file reading and command-line digests.
2875 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2877 *) Add AES modes CFB and OFB to the object database. Correct an
2878 error in AES-CFB decryption.
2881 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2882 allows existing EVP_CIPHER_CTX structures to be reused after
2883 calling EVP_*Final(). This behaviour is used by encryption
2884 BIOs and some applications. This has the side effect that
2885 applications must explicitly clean up cipher contexts with
2886 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2889 *) Check the values of dna and dnb in bn_mul_recursive before calling
2890 bn_mul_comba (a non zero value means the a or b arrays do not contain
2891 n2 elements) and fallback to bn_mul_normal if either is not zero.
2894 *) Fix escaping of non-ASCII characters when using the -subj option
2895 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2898 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2899 form for "surname", serialNumber has no short form.
2900 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2901 therefore remove "mail" short name for "internet 7".
2902 The OID for unique identifiers in X509 certificates is
2903 x500UniqueIdentifier, not uniqueIdentifier.
2904 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2907 *) Add an "init" command to the ENGINE config module and auto initialize
2908 ENGINEs. Without any "init" command the ENGINE will be initialized
2909 after all ctrl commands have been executed on it. If init=1 the
2910 ENGINE is initailized at that point (ctrls before that point are run
2911 on the uninitialized ENGINE and after on the initialized one). If
2912 init=0 then the ENGINE will not be iniatialized at all.
2915 *) Fix the 'app_verify_callback' interface so that the user-defined
2916 argument is actually passed to the callback: In the
2917 SSL_CTX_set_cert_verify_callback() prototype, the callback
2918 declaration has been changed from
2921 int (*cb)(X509_STORE_CTX *,void *);
2922 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2923 i=s->ctx->app_verify_callback(&ctx)
2924 has been changed into
2925 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2927 To update applications using SSL_CTX_set_cert_verify_callback(),
2928 a dummy argument can be added to their callback functions.
2929 [D. K. Smetters <smetters@parc.xerox.com>]
2931 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2932 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2934 *) Add and OPENSSL_LOAD_CONF define which will cause
2935 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2936 This allows older applications to transparently support certain
2937 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2938 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2939 load the config file and OPENSSL_add_all_algorithms_conf() which will
2940 always load it have also been added.
2943 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2944 Adjust NIDs and EVP layer.
2945 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2947 *) Config modules support in openssl utility.
2949 Most commands now load modules from the config file,
2950 though in a few (such as version) this isn't done
2951 because it couldn't be used for anything.
2953 In the case of ca and req the config file used is
2954 the same as the utility itself: that is the -config
2955 command line option can be used to specify an
2959 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2960 use "openssl_conf" if filename is NULL use default openssl config file.
2963 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2964 config section name. Add a new flag to tolerate a missing config file
2965 and move code to CONF_modules_load_file().
2968 *) Support for crypto accelerator cards from Accelerated Encryption
2969 Processing, www.aep.ie. (Use engine 'aep')
2970 The support was copied from 0.9.6c [engine] and adapted/corrected
2971 to work with the new engine framework.
2972 [AEP Inc. and Richard Levitte]
2974 *) Support for SureWare crypto accelerator cards from Baltimore
2975 Technologies. (Use engine 'sureware')
2976 The support was copied from 0.9.6c [engine] and adapted
2977 to work with the new engine framework.
2980 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2981 make the newer ENGINE framework commands for the CHIL engine work.
2982 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2984 *) Make it possible to produce shared libraries on ReliantUNIX.
2985 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2987 *) Add the configuration target debug-linux-ppro.
2988 Make 'openssl rsa' use the general key loading routines
2989 implemented in apps.c, and make those routines able to
2990 handle the key format FORMAT_NETSCAPE and the variant
2992 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2994 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2995 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2997 *) Add -keyform to rsautl, and document -engine.
2998 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3000 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3001 BIO_R_NO_SUCH_FILE error code rather than the generic
3002 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3005 *) Add new functions
3007 ERR_peek_last_error_line
3008 ERR_peek_last_error_line_data.
3009 These are similar to
3012 ERR_peek_error_line_data,
3013 but report on the latest error recorded rather than the first one
3014 still in the error queue.
3015 [Ben Laurie, Bodo Moeller]
3017 *) default_algorithms option in ENGINE config module. This allows things
3019 default_algorithms = ALL
3020 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3023 *) Prelminary ENGINE config module.
3026 *) New experimental application configuration code.
3029 *) Change the AES code to follow the same name structure as all other
3030 symmetric ciphers, and behave the same way. Move everything to
3031 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3032 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3034 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3035 [Ben Laurie and Theo de Raadt]
3037 *) Add option to output public keys in req command.
3038 [Massimiliano Pala madwolf@openca.org]
3040 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3041 (up to about 10% better than before for P-192 and P-224).
3044 *) New functions/macros
3046 SSL_CTX_set_msg_callback(ctx, cb)
3047 SSL_CTX_set_msg_callback_arg(ctx, arg)
3048 SSL_set_msg_callback(ssl, cb)
3049 SSL_set_msg_callback_arg(ssl, arg)
3051 to request calling a callback function
3053 void cb(int write_p, int version, int content_type,
3054 const void *buf, size_t len, SSL *ssl, void *arg)
3056 whenever a protocol message has been completely received
3057 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3058 protocol version according to which the SSL library interprets
3059 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3060 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3061 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3062 specification (change_cipher_spec(20), alert(21), handshake(22)).
3063 'buf' and 'len' point to the actual message, 'ssl' to the
3064 SSL object, and 'arg' is the application-defined value set by
3065 SSL[_CTX]_set_msg_callback_arg().
3067 'openssl s_client' and 'openssl s_server' have new '-msg' options
3068 to enable a callback that displays all protocol messages.
3071 *) Change the shared library support so shared libraries are built as
3072 soon as the corresponding static library is finished, and thereby get
3073 openssl and the test programs linked against the shared library.
3074 This still only happens when the keyword "shard" has been given to
3075 the configuration scripts.
3077 NOTE: shared library support is still an experimental thing, and
3078 backward binary compatibility is still not guaranteed.
3079 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3081 *) Add support for Subject Information Access extension.
3082 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3084 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3085 additional bytes when new memory had to be allocated, not just
3086 when reusing an existing buffer.
3089 *) New command line and configuration option 'utf8' for the req command.
3090 This allows field values to be specified as UTF8 strings.
3093 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3094 runs for the former and machine-readable output for the latter.
3097 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3098 of the e-mail address in the DN (i.e., it will go into a certificate
3099 extension only). The new configuration file option 'email_in_dn = no'
3100 has the same effect.
3101 [Massimiliano Pala madwolf@openca.org]
3103 *) Change all functions with names starting with des_ to be starting
3104 with DES_ instead. Add wrappers that are compatible with libdes,
3105 but are named _ossl_old_des_*. Finally, add macros that map the
3106 des_* symbols to the corresponding _ossl_old_des_* if libdes
3107 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3108 desired, the des_* symbols will be mapped to DES_*, with one
3111 Since we provide two compatibility mappings, the user needs to
3112 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3113 compatibility is desired. The default (i.e., when that macro
3114 isn't defined) is OpenSSL 0.9.6c compatibility.
3116 There are also macros that enable and disable the support of old
3117 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3118 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3119 are defined, the default will apply: to support the old des routines.
3121 In either case, one must include openssl/des.h to get the correct
3122 definitions. Do not try to just include openssl/des_old.h, that
3125 NOTE: This is a major break of an old API into a new one. Software
3126 authors are encouraged to switch to the DES_ style functions. Some
3127 time in the future, des_old.h and the libdes compatibility functions
3128 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3129 default), and then completely removed.
3132 *) Test for certificates which contain unsupported critical extensions.
3133 If such a certificate is found during a verify operation it is
3134 rejected by default: this behaviour can be overridden by either
3135 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3136 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3137 X509_supported_extension() has also been added which returns 1 if a
3138 particular extension is supported.
3141 *) Modify the behaviour of EVP cipher functions in similar way to digests
3142 to retain compatibility with existing code.
3145 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3146 compatibility with existing code. In particular the 'ctx' parameter does
3147 not have to be to be initialized before the call to EVP_DigestInit() and
3148 it is tidied up after a call to EVP_DigestFinal(). New function
3149 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3150 EVP_MD_CTX_copy() changed to not require the destination to be
3151 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3152 requires the destination to be valid.
3154 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3155 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3158 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3159 so that complete 'Handshake' protocol structures are kept in memory
3160 instead of overwriting 'msg_type' and 'length' with 'body' data.
3163 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3164 [Massimo Santin via Richard Levitte]
3166 *) Major restructuring to the underlying ENGINE code. This includes
3167 reduction of linker bloat, separation of pure "ENGINE" manipulation
3168 (initialisation, etc) from functionality dealing with implementations
3169 of specific crypto iterfaces. This change also introduces integrated
3170 support for symmetric ciphers and digest implementations - so ENGINEs
3171 can now accelerate these by providing EVP_CIPHER and EVP_MD
3172 implementations of their own. This is detailed in crypto/engine/README
3173 as it couldn't be adequately described here. However, there are a few
3174 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3175 were changed in the original introduction of ENGINE code have now
3176 reverted back - the hooking from this code to ENGINE is now a good
3177 deal more passive and at run-time, operations deal directly with
3178 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3179 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3180 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3181 they were not being used by the framework as there is no concept of a
3182 BIGNUM_METHOD and they could not be generalised to the new
3183 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3184 ENGINE_cpy() has been removed as it cannot be consistently defined in
3188 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3191 *) Change mkdef.pl to sort symbols that get the same entry number,
3192 and make sure the automatically generated functions ERR_load_*
3193 become part of libeay.num as well.
3196 *) New function SSL_renegotiate_pending(). This returns true once
3197 renegotiation has been requested (either SSL_renegotiate() call
3198 or HelloRequest/ClientHello receveived from the peer) and becomes
3199 false once a handshake has been completed.
3200 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3201 sends a HelloRequest, but does not ensure that a handshake takes
3202 place. SSL_renegotiate_pending() is useful for checking if the
3203 client has followed the request.)
3206 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3207 By default, clients may request session resumption even during
3208 renegotiation (if session ID contexts permit); with this option,
3209 session resumption is possible only in the first handshake.
3211 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3212 more bits available for options that should not be part of
3213 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3216 *) Add some demos for certificate and certificate request creation.
3219 *) Make maximum certificate chain size accepted from the peer application
3220 settable (SSL*_get/set_max_cert_list()), as proposed by
3221 "Douglas E. Engert" <deengert@anl.gov>.
3224 *) Add support for shared libraries for Unixware-7
3225 (Boyd Lynn Gerber <gerberb@zenez.com>).
3228 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3229 be done prior to destruction. Use this to unload error strings from
3230 ENGINEs that load their own error strings. NB: This adds two new API
3231 functions to "get" and "set" this destroy handler in an ENGINE.
3234 *) Alter all existing ENGINE implementations (except "openssl" and
3235 "openbsd") to dynamically instantiate their own error strings. This
3236 makes them more flexible to be built both as statically-linked ENGINEs
3237 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3238 Also, add stub code to each that makes building them as self-contained
3239 shared-libraries easier (see README.ENGINE).
3242 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3243 implementations into applications that are completely implemented in
3244 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3245 commands that can be used to configure what shared-library to load and
3246 to control aspects of the way it is handled. Also, made an update to
3247 the README.ENGINE file that brings its information up-to-date and
3248 provides some information and instructions on the "dynamic" ENGINE
3249 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3252 *) Make it possible to unload ranges of ERR strings with a new
3253 "ERR_unload_strings" function.
3256 *) Add a copy() function to EVP_MD.
3259 *) Make EVP_MD routines take a context pointer instead of just the
3260 md_data void pointer.
3263 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3264 that the digest can only process a single chunk of data
3265 (typically because it is provided by a piece of
3266 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3267 is only going to provide a single chunk of data, and hence the
3268 framework needn't accumulate the data for oneshot drivers.
3271 *) As with "ERR", make it possible to replace the underlying "ex_data"
3272 functions. This change also alters the storage and management of global
3273 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3274 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3275 index counters. The API functions that use this state have been changed
3276 to take a "class_index" rather than pointers to the class's local STACK
3277 and counter, and there is now an API function to dynamically create new
3278 classes. This centralisation allows us to (a) plug a lot of the
3279 thread-safety problems that existed, and (b) makes it possible to clean
3280 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3281 such data would previously have always leaked in application code and
3282 workarounds were in place to make the memory debugging turn a blind eye
3283 to it. Application code that doesn't use this new function will still
3284 leak as before, but their memory debugging output will announce it now
3285 rather than letting it slide.
3287 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3288 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3289 has a return value to indicate success or failure.
3292 *) Make it possible to replace the underlying "ERR" functions such that the
3293 global state (2 LHASH tables and 2 locks) is only used by the "default"
3294 implementation. This change also adds two functions to "get" and "set"
3295 the implementation prior to it being automatically set the first time
3296 any other ERR function takes place. Ie. an application can call "get",
3297 pass the return value to a module it has just loaded, and that module
3298 can call its own "set" function using that value. This means the
3299 module's "ERR" operations will use (and modify) the error state in the
3300 application and not in its own statically linked copy of OpenSSL code.
3303 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3304 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3305 the operation, and provides a more encapsulated way for external code
3306 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3307 to use these functions rather than manually incrementing the counts.
3309 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3312 *) Add EVP test program.
3315 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3318 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3319 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3320 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3321 These allow a CRL to be built without having to access X509_CRL fields
3322 directly. Modify 'ca' application to use new functions.
3325 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3326 bug workarounds. Rollback attack detection is a security feature.
3327 The problem will only arise on OpenSSL servers when TLSv1 is not
3328 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3329 Software authors not wanting to support TLSv1 will have special reasons
3330 for their choice and can explicitly enable this option.
3331 [Bodo Moeller, Lutz Jaenicke]
3333 *) Rationalise EVP so it can be extended: don't include a union of
3334 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3335 (similar to those existing for EVP_CIPHER_CTX).
3340 EVP_MD_CTX_init(&md); /* new function call */
3341 EVP_DigestInit(&md, EVP_sha1());
3342 EVP_DigestUpdate(&md, in, len);
3343 EVP_DigestFinal(&md, out, NULL);
3344 EVP_MD_CTX_cleanup(&md); /* new function call */
3348 *) Make DES key schedule conform to the usual scheme, as well as
3349 correcting its structure. This means that calls to DES functions
3350 now have to pass a pointer to a des_key_schedule instead of a
3351 plain des_key_schedule (which was actually always a pointer
3354 des_key_schedule ks;
3356 des_set_key_checked(..., &ks);
3357 des_ncbc_encrypt(..., &ks, ...);
3359 (Note that a later change renames 'des_...' into 'DES_...'.)
3362 *) Initial reduction of linker bloat: the use of some functions, such as
3363 PEM causes large amounts of unused functions to be linked in due to
3364 poor organisation. For example pem_all.c contains every PEM function
3365 which has a knock on effect of linking in large amounts of (unused)
3366 ASN1 code. Grouping together similar functions and splitting unrelated
3367 functions prevents this.
3370 *) Cleanup of EVP macros.
3373 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3374 correct _ecb suffix.
3377 *) Add initial OCSP responder support to ocsp application. The
3378 revocation information is handled using the text based index
3379 use by the ca application. The responder can either handle
3380 requests generated internally, supplied in files (for example
3381 via a CGI script) or using an internal minimal server.
3384 *) Add configuration choices to get zlib compression for TLS.
3387 *) Changes to Kerberos SSL for RFC 2712 compliance:
3388 1. Implemented real KerberosWrapper, instead of just using
3389 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3390 2. Implemented optional authenticator field of KerberosWrapper.
3392 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3393 and authenticator structs; see crypto/krb5/.
3395 Generalized Kerberos calls to support multiple Kerberos libraries.
3396 [Vern Staats <staatsvr@asc.hpc.mil>,
3397 Jeffrey Altman <jaltman@columbia.edu>
3398 via Richard Levitte]
3400 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3401 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3402 values for each of the key sizes rather than having just
3403 parameters (and 'speed' generating keys each time).
3406 *) Speed up EVP routines.
3409 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3410 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3411 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3412 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3414 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3415 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3416 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3419 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3421 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3424 *) Added the OS2-EMX target.
3425 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3427 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3428 to support NCONF routines in extension code. New function CONF_set_nconf()
3429 to allow functions which take an NCONF to also handle the old LHASH
3430 structure: this means that the old CONF compatible routines can be
3431 retained (in particular wrt extensions) without having to duplicate the
3432 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3435 *) Enhance the general user interface with mechanisms for inner control
3436 and with possibilities to have yes/no kind of prompts.
3439 *) Change all calls to low level digest routines in the library and
3440 applications to use EVP. Add missing calls to HMAC_cleanup() and
3441 don't assume HMAC_CTX can be copied using memcpy().
3442 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3444 *) Add the possibility to control engines through control names but with
3445 arbitrary arguments instead of just a string.
3446 Change the key loaders to take a UI_METHOD instead of a callback
3447 function pointer. NOTE: this breaks binary compatibility with earlier
3448 versions of OpenSSL [engine].
3449 Adapt the nCipher code for these new conditions and add a card insertion
3453 *) Enhance the general user interface with mechanisms to better support
3454 dialog box interfaces, application-defined prompts, the possibility
3455 to use defaults (for example default passwords from somewhere else)
3456 and interrupts/cancellations.
3459 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3460 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3463 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3464 tidy up some unnecessarily weird code in 'sk_new()').
3465 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3467 *) Change the key loading routines for ENGINEs to use the same kind
3468 callback (pem_password_cb) as all other routines that need this
3472 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3473 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3474 than this minimum value is recommended.
3477 *) New random seeder for OpenVMS, using the system process statistics
3478 that are easily reachable.
3481 *) Windows apparently can't transparently handle global
3482 variables defined in DLLs. Initialisations such as:
3484 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3486 wont compile. This is used by the any applications that need to
3487 declare their own ASN1 modules. This was fixed by adding the option
3488 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3489 needed for static libraries under Win32.
3492 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3493 setting of purpose and trust fields. New X509_STORE trust and
3494 purpose functions and tidy up setting in other SSL functions.
3497 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3498 structure. These are inherited by X509_STORE_CTX when it is
3499 initialised. This allows various defaults to be set in the
3500 X509_STORE structure (such as flags for CRL checking and custom
3501 purpose or trust settings) for functions which only use X509_STORE_CTX
3502 internally such as S/MIME.
3504 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3505 trust settings if they are not set in X509_STORE. This allows X509_STORE
3506 purposes and trust (in S/MIME for example) to override any set by default.
3508 Add command line options for CRL checking to smime, s_client and s_server
3512 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3513 are set then the CRL is looked up in the X509_STORE structure and
3514 its validity and signature checked, then if the certificate is found
3515 in the CRL the verify fails with a revoked error.
3517 Various new CRL related callbacks added to X509_STORE_CTX structure.
3519 Command line options added to 'verify' application to support this.
3521 This needs some additional work, such as being able to handle multiple
3522 CRLs with different times, extension based lookup (rather than just
3523 by subject name) and ultimately more complete V2 CRL extension
3527 *) Add a general user interface API (crypto/ui/). This is designed
3528 to replace things like des_read_password and friends (backward
3529 compatibility functions using this new API are provided).
3530 The purpose is to remove prompting functions from the DES code
3531 section as well as provide for prompting through dialog boxes in
3532 a window system and the like.
3535 *) Add "ex_data" support to ENGINE so implementations can add state at a
3536 per-structure level rather than having to store it globally.
3539 *) Make it possible for ENGINE structures to be copied when retrieved by
3540 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3541 This causes the "original" ENGINE structure to act like a template,
3542 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3543 operational state can be localised to each ENGINE structure, despite the
3544 fact they all share the same "methods". New ENGINE structures returned in
3545 this case have no functional references and the return value is the single
3546 structural reference. This matches the single structural reference returned
3547 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3551 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3552 needs to match any other type at all we need to manually clear the
3556 *) Changes to the "openssl engine" utility to include;
3557 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3558 about an ENGINE's available control commands.
3559 - executing control commands from command line arguments using the
3560 '-pre' and '-post' switches. '-post' is only used if '-t' is
3561 specified and the ENGINE is successfully initialised. The syntax for
3562 the individual commands are colon-separated, for example;
3563 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3566 *) New dynamic control command support for ENGINEs. ENGINEs can now
3567 declare their own commands (numbers), names (strings), descriptions,
3568 and input types for run-time discovery by calling applications. A
3569 subset of these commands are implicitly classed as "executable"
3570 depending on their input type, and only these can be invoked through
3571 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3572 can be based on user input, config files, etc). The distinction is
3573 that "executable" commands cannot return anything other than a boolean
3574 result and can only support numeric or string input, whereas some
3575 discoverable commands may only be for direct use through
3576 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3577 pointers, or other custom uses. The "executable" commands are to
3578 support parameterisations of ENGINE behaviour that can be
3579 unambiguously defined by ENGINEs and used consistently across any
3580 OpenSSL-based application. Commands have been added to all the
3581 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3582 control over shared-library paths without source code alterations.
3585 *) Changed all ENGINE implementations to dynamically allocate their
3586 ENGINEs rather than declaring them statically. Apart from this being
3587 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3588 this also allows the implementations to compile without using the
3589 internal engine_int.h header.
3592 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3593 'const' value. Any code that should be able to modify a RAND_METHOD
3594 should already have non-const pointers to it (ie. they should only
3595 modify their own ones).
3598 *) Made a variety of little tweaks to the ENGINE code.
3599 - "atalla" and "ubsec" string definitions were moved from header files
3600 to C code. "nuron" string definitions were placed in variables
3601 rather than hard-coded - allowing parameterisation of these values
3602 later on via ctrl() commands.
3603 - Removed unused "#if 0"'d code.
3604 - Fixed engine list iteration code so it uses ENGINE_free() to release
3605 structural references.
3606 - Constified the RAND_METHOD element of ENGINE structures.
3607 - Constified various get/set functions as appropriate and added
3608 missing functions (including a catch-all ENGINE_cpy that duplicates
3609 all ENGINE values onto a new ENGINE except reference counts/state).
3610 - Removed NULL parameter checks in get/set functions. Setting a method
3611 or function to NULL is a way of cancelling out a previously set
3612 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3613 and doesn't justify the extra error symbols and code.
3614 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3615 flags from engine_int.h to engine.h.
3616 - Changed prototypes for ENGINE handler functions (init(), finish(),
3617 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3620 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3621 to the algorithm using long division. The binary algorithm can be
3622 used only if the modulus is odd. On 32-bit systems, it is faster
3623 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3624 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3625 up to 450 bits. In 64-bit environments, the binary algorithm
3626 appears to be advantageous for much longer moduli; here we use it
3627 for moduli up to 2048 bits.
3630 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3631 could not support the combine flag in choice fields.
3634 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3635 extensions from a certificate request to the certificate.
3638 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3639 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3640 file: this allows the display of the certificate about to be
3641 signed to be customised, to allow certain fields to be included
3642 or excluded and extension details. The old system didn't display
3643 multicharacter strings properly, omitted fields not in the policy
3644 and couldn't display additional details such as extensions.
3647 *) Function EC_POINTs_mul for multiple scalar multiplication
3648 of an arbitrary number of elliptic curve points
3649 \sum scalars[i]*points[i],
3650 optionally including the generator defined for the EC_GROUP:
3651 scalar*generator + \sum scalars[i]*points[i].
3653 EC_POINT_mul is a simple wrapper function for the typical case
3654 that the point list has just one item (besides the optional
3658 *) First EC_METHODs for curves over GF(p):
3660 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3661 operations and provides various method functions that can also
3662 operate with faster implementations of modular arithmetic.
3664 EC_GFp_mont_method() reuses most functions that are part of
3665 EC_GFp_simple_method, but uses Montgomery arithmetic.
3667 [Bodo Moeller; point addition and point doubling
3668 implementation directly derived from source code provided by
3669 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3671 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3672 crypto/ec/ec_lib.c):
3674 Curves are EC_GROUP objects (with an optional group generator)
3675 based on EC_METHODs that are built into the library.
3677 Points are EC_POINT objects based on EC_GROUP objects.
3679 Most of the framework would be able to handle curves over arbitrary
3680 finite fields, but as there are no obvious types for fields other
3681 than GF(p), some functions are limited to that for now.
3684 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3685 that the file contains a complete HTTP response.
3688 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3689 change the def and num file printf format specifier from "%-40sXXX"
3690 to "%-39s XXX". The latter will always guarantee a space after the
3691 field while the former will cause them to run together if the field
3692 is 40 of more characters long.
3695 *) Constify the cipher and digest 'method' functions and structures
3696 and modify related functions to take constant EVP_MD and EVP_CIPHER
3700 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3701 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3704 *) Modify EVP_Digest*() routines so they now return values. Although the
3705 internal software routines can never fail additional hardware versions
3709 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3711 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3712 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3715 ERR_R_NESTED_ASN1_ERROR
3717 ERR_R_MISSING_ASN1_EOS
3718 were 4 .. 9, conflicting with
3719 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3721 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3722 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3724 Add new error code 'ERR_R_INTERNAL_ERROR'.
3727 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3731 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3732 sets the subject name for a new request or supersedes the
3733 subject name in a given request. Formats that can be parsed are
3734 'CN=Some Name, OU=myOU, C=IT'
3736 'CN=Some Name/OU=myOU/C=IT'.
3738 Add options '-batch' and '-verbose' to 'openssl req'.
3739 [Massimiliano Pala <madwolf@hackmasters.net>]
3741 *) Introduce the possibility to access global variables through
3742 functions on platform were that's the best way to handle exporting
3743 global variables in shared libraries. To enable this functionality,
3744 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3745 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3746 is normally done by Configure or something similar).
3748 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3749 in the source file (foo.c) like this:
3751 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3752 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3754 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3755 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3757 OPENSSL_DECLARE_GLOBAL(int,foo);
3758 #define foo OPENSSL_GLOBAL_REF(foo)
3759 OPENSSL_DECLARE_GLOBAL(double,bar);
3760 #define bar OPENSSL_GLOBAL_REF(bar)
3762 The #defines are very important, and therefore so is including the
3763 header file everywhere where the defined globals are used.
3765 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3766 of ASN.1 items, but that structure is a bit different.
3768 The largest change is in util/mkdef.pl which has been enhanced with
3769 better and easier to understand logic to choose which symbols should
3770 go into the Windows .def files as well as a number of fixes and code
3771 cleanup (among others, algorithm keywords are now sorted
3772 lexicographically to avoid constant rewrites).
3775 *) In BN_div() keep a copy of the sign of 'num' before writing the
3776 result to 'rm' because if rm==num the value will be overwritten
3777 and produce the wrong result if 'num' is negative: this caused
3778 problems with BN_mod() and BN_nnmod().
3781 *) Function OCSP_request_verify(). This checks the signature on an
3782 OCSP request and verifies the signer certificate. The signer
3783 certificate is just checked for a generic purpose and OCSP request
3787 *) Add OCSP_check_validity() function to check the validity of OCSP
3788 responses. OCSP responses are prepared in real time and may only
3789 be a few seconds old. Simply checking that the current time lies
3790 between thisUpdate and nextUpdate max reject otherwise valid responses
3791 caused by either OCSP responder or client clock inaccuracy. Instead
3792 we allow thisUpdate and nextUpdate to fall within a certain period of
3793 the current time. The age of the response can also optionally be
3794 checked. Two new options -validity_period and -status_age added to
3798 *) If signature or public key algorithm is unrecognized print out its
3799 OID rather that just UNKNOWN.
3802 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3803 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3804 ID to be generated from the issuer certificate alone which can then be
3805 passed to OCSP_id_issuer_cmp().
3808 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3809 ASN1 modules to export functions returning ASN1_ITEM pointers
3810 instead of the ASN1_ITEM structures themselves. This adds several
3811 new macros which allow the underlying ASN1 function/structure to
3812 be accessed transparently. As a result code should not use ASN1_ITEM
3813 references directly (such as &X509_it) but instead use the relevant
3814 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3815 use of the new ASN1 code on platforms where exporting structures
3816 is problematical (for example in shared libraries) but exporting
3817 functions returning pointers to structures is not.
3820 *) Add support for overriding the generation of SSL/TLS session IDs.
3821 These callbacks can be registered either in an SSL_CTX or per SSL.
3822 The purpose of this is to allow applications to control, if they wish,
3823 the arbitrary values chosen for use as session IDs, particularly as it
3824 can be useful for session caching in multiple-server environments. A
3825 command-line switch for testing this (and any client code that wishes
3826 to use such a feature) has been added to "s_server".
3827 [Geoff Thorpe, Lutz Jaenicke]
3829 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3830 of the form '#if defined(...) || defined(...) || ...' and
3831 '#if !defined(...) && !defined(...) && ...'. This also avoids
3832 the growing number of special cases it was previously handling.
3835 *) Make all configuration macros available for application by making
3836 sure they are available in opensslconf.h, by giving them names starting
3837 with "OPENSSL_" to avoid conflicts with other packages and by making
3838 sure e_os2.h will cover all platform-specific cases together with
3840 Additionally, it is now possible to define configuration/platform-
3841 specific names (called "system identities"). In the C code, these
3842 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3843 macro with the name beginning with "OPENSSL_SYS_", which is determined
3844 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3848 *) New option -set_serial to 'req' and 'x509' this allows the serial
3849 number to use to be specified on the command line. Previously self
3850 signed certificates were hard coded with serial number 0 and the
3851 CA options of 'x509' had to use a serial number in a file which was
3855 *) New options to 'ca' utility to support V2 CRL entry extensions.
3856 Currently CRL reason, invalidity date and hold instruction are
3857 supported. Add new CRL extensions to V3 code and some new objects.
3860 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3861 disable standard block padding (aka PKCS#5 padding) in the EVP
3862 API, which was previously mandatory. This means that the data is
3863 not padded in any way and so the total length much be a multiple
3864 of the block size, otherwise an error occurs.
3867 *) Initial (incomplete) OCSP SSL support.
3870 *) New function OCSP_parse_url(). This splits up a URL into its host,
3871 port and path components: primarily to parse OCSP URLs. New -url
3872 option to ocsp utility.
3875 *) New nonce behavior. The return value of OCSP_check_nonce() now
3876 reflects the various checks performed. Applications can decide
3877 whether to tolerate certain situations such as an absent nonce
3878 in a response when one was present in a request: the ocsp application
3879 just prints out a warning. New function OCSP_add1_basic_nonce()
3880 this is to allow responders to include a nonce in a response even if
3881 the request is nonce-less.
3884 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3885 skipped when using openssl x509 multiple times on a single input file,
3886 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3889 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3890 set string type: to handle setting ASN1_TIME structures. Fix ca
3891 utility to correctly initialize revocation date of CRLs.
3894 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3895 the clients preferred ciphersuites and rather use its own preferences.
3896 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3897 Internet Explorer by ensuring unchanged hash method during stepup.
3898 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3901 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3902 to aes and add a new 'exist' option to print out symbols that don't
3906 *) Additional options to ocsp utility to allow flags to be set and
3907 additional certificates supplied.
3910 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3911 OCSP client a number of certificate to only verify the response
3915 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3916 handle the new API. Currently only ECB, CBC modes supported. Add new
3919 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3920 Encryption Standard (AES) Ciphersuites for Transport Layer
3921 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3922 not enabled by default and were not part of the "ALL" ciphersuite
3923 alias because they were not yet official; they could be
3924 explicitly requested by specifying the "AESdraft" ciphersuite
3925 group alias. In the final release of OpenSSL 0.9.7, the group
3926 alias is called "AES" and is part of "ALL".)
3927 [Ben Laurie, Steve Henson, Bodo Moeller]
3929 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3930 request to response.
3933 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3934 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3935 extract information from a certificate request. OCSP_response_create()
3936 creates a response and optionally adds a basic response structure.
3937 OCSP_basic_add1_status() adds a complete single response to a basic
3938 response and returns the OCSP_SINGLERESP structure just added (to allow
3939 extensions to be included for example). OCSP_basic_add1_cert() adds a
3940 certificate to a basic response and OCSP_basic_sign() signs a basic
3941 response with various flags. New helper functions ASN1_TIME_check()
3942 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3943 (converts ASN1_TIME to GeneralizedTime).
3946 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3947 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3948 structure from a certificate. X509_pubkey_digest() digests the public_key
3949 contents: this is used in various key identifiers.
3952 *) Make sk_sort() tolerate a NULL argument.
3953 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3955 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3956 passed by the function are trusted implicitly. If any of them signed the
3957 response then it is assumed to be valid and is not verified.
3960 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3961 to data. This was previously part of the PKCS7 ASN1 code. This
3962 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3963 [Steve Henson, reported by Kenneth R. Robinette
3964 <support@securenetterm.com>]
3966 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3967 routines: without these tracing memory leaks is very painful.
3968 Fix leaks in PKCS12 and PKCS7 routines.
3971 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3972 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3973 effectively meant GeneralizedTime would never be used. Now it
3974 is initialised to -1 but X509_time_adj() now has to check the value
3975 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3976 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3977 [Steve Henson, reported by Kenneth R. Robinette
3978 <support@securenetterm.com>]
3980 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3981 result in a zero length in the ASN1_INTEGER structure which was
3982 not consistent with the structure when d2i_ASN1_INTEGER() was used
3983 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3984 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3985 where it did not print out a minus for negative ASN1_INTEGER.
3988 *) Add summary printout to ocsp utility. The various functions which
3989 convert status values to strings have been renamed to:
3990 OCSP_response_status_str(), OCSP_cert_status_str() and
3991 OCSP_crl_reason_str() and are no longer static. New options
3992 to verify nonce values and to disable verification. OCSP response
3993 printout format cleaned up.
3996 *) Add additional OCSP certificate checks. These are those specified
3997 in RFC2560. This consists of two separate checks: the CA of the
3998 certificate being checked must either be the OCSP signer certificate
3999 or the issuer of the OCSP signer certificate. In the latter case the
4000 OCSP signer certificate must contain the OCSP signing extended key
4001 usage. This check is performed by attempting to match the OCSP
4002 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
4003 in the OCSP_CERTID structures of the response.
4006 *) Initial OCSP certificate verification added to OCSP_basic_verify()
4007 and related routines. This uses the standard OpenSSL certificate
4008 verify routines to perform initial checks (just CA validity) and
4009 to obtain the certificate chain. Then additional checks will be
4010 performed on the chain. Currently the root CA is checked to see
4011 if it is explicitly trusted for OCSP signing. This is used to set
4012 a root CA as a global signing root: that is any certificate that
4013 chains to that CA is an acceptable OCSP signing certificate.
4016 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4017 extensions from a separate configuration file.
4018 As when reading extensions from the main configuration file,
4019 the '-extensions ...' option may be used for specifying the
4021 [Massimiliano Pala <madwolf@comune.modena.it>]
4023 *) New OCSP utility. Allows OCSP requests to be generated or
4024 read. The request can be sent to a responder and the output
4025 parsed, outputed or printed in text form. Not complete yet:
4026 still needs to check the OCSP response validity.
4029 *) New subcommands for 'openssl ca':
4030 'openssl ca -status <serial>' prints the status of the cert with
4031 the given serial number (according to the index file).
4032 'openssl ca -updatedb' updates the expiry status of certificates
4034 [Massimiliano Pala <madwolf@comune.modena.it>]
4036 *) New '-newreq-nodes' command option to CA.pl. This is like
4037 '-newreq', but calls 'openssl req' with the '-nodes' option
4038 so that the resulting key is not encrypted.
4039 [Damien Miller <djm@mindrot.org>]
4041 *) New configuration for the GNU Hurd.
4042 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4044 *) Initial code to implement OCSP basic response verify. This
4045 is currently incomplete. Currently just finds the signer's
4046 certificate and verifies the signature on the response.
4049 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4050 value of OPENSSLDIR. This is available via the new '-d' option
4051 to 'openssl version', and is also included in 'openssl version -a'.
4054 *) Allowing defining memory allocation callbacks that will be given
4055 file name and line number information in additional arguments
4056 (a const char* and an int). The basic functionality remains, as
4057 well as the original possibility to just replace malloc(),
4058 realloc() and free() by functions that do not know about these
4059 additional arguments. To register and find out the current
4060 settings for extended allocation functions, the following
4061 functions are provided:
4063 CRYPTO_set_mem_ex_functions
4064 CRYPTO_set_locked_mem_ex_functions
4065 CRYPTO_get_mem_ex_functions
4066 CRYPTO_get_locked_mem_ex_functions
4068 These work the same way as CRYPTO_set_mem_functions and friends.
4069 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4070 extended allocation function is enabled.
4071 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4072 a conventional allocation function is enabled.
4073 [Richard Levitte, Bodo Moeller]
4075 *) Finish off removing the remaining LHASH function pointer casts.
4076 There should no longer be any prototype-casting required when using
4077 the LHASH abstraction, and any casts that remain are "bugs". See
4078 the callback types and macros at the head of lhash.h for details
4079 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4082 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4083 If /dev/[u]random devices are not available or do not return enough
4084 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4086 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4087 /etc/entropy will be queried once each in this sequence, quering stops
4088 when enough entropy was collected without querying more sockets.
4091 *) Change the Unix RAND_poll() variant to be able to poll several
4092 random devices, as specified by DEVRANDOM, until a sufficient amount
4093 of data has been collected. We spend at most 10 ms on each file
4094 (select timeout) and read in non-blocking mode. DEVRANDOM now
4095 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4096 (previously it was just the string "/dev/urandom"), so on typical
4097 platforms the 10 ms delay will never occur.
4098 Also separate out the Unix variant to its own file, rand_unix.c.
4099 For VMS, there's a currently-empty rand_vms.c.
4102 *) Move OCSP client related routines to ocsp_cl.c. These
4103 provide utility functions which an application needing
4104 to issue a request to an OCSP responder and analyse the
4105 response will typically need: as opposed to those which an
4106 OCSP responder itself would need which will be added later.
4108 OCSP_request_sign() signs an OCSP request with an API similar
4109 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4110 response. OCSP_response_get1_basic() extracts basic response
4111 from response. OCSP_resp_find_status(): finds and extracts status
4112 information from an OCSP_CERTID structure (which will be created
4113 when the request structure is built). These are built from lower
4114 level functions which work on OCSP_SINGLERESP structures but
4115 wont normally be used unless the application wishes to examine
4116 extensions in the OCSP response for example.
4118 Replace nonce routines with a pair of functions.
4119 OCSP_request_add1_nonce() adds a nonce value and optionally
4120 generates a random value. OCSP_check_nonce() checks the
4121 validity of the nonce in an OCSP response.
4124 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4125 This doesn't copy the supplied OCSP_CERTID and avoids the
4126 need to free up the newly created id. Change return type
4127 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4128 This can then be used to add extensions to the request.
4129 Deleted OCSP_request_new(), since most of its functionality
4130 is now in OCSP_REQUEST_new() (and the case insensitive name
4131 clash) apart from the ability to set the request name which
4132 will be added elsewhere.
4135 *) Update OCSP API. Remove obsolete extensions argument from
4136 various functions. Extensions are now handled using the new
4137 OCSP extension code. New simple OCSP HTTP function which
4138 can be used to send requests and parse the response.
4141 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4142 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4143 uses the special reorder version of SET OF to sort the attributes
4144 and reorder them to match the encoded order. This resolves a long
4145 standing problem: a verify on a PKCS7 structure just after signing
4146 it used to fail because the attribute order did not match the
4147 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4148 it uses the received order. This is necessary to tolerate some broken
4149 software that does not order SET OF. This is handled by encoding
4150 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4151 to produce the required SET OF.
4154 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4155 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4156 files to get correct declarations of the ASN.1 item variables.
4159 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4160 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4161 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4162 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4163 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4164 ASN1_ITEM and no wrapper functions.
4167 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4168 replace the old function pointer based I/O routines. Change most of
4169 the *_d2i_bio() and *_d2i_fp() functions to use these.
4172 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4173 lines, recognice more "algorithms" that can be deselected, and make
4174 it complain about algorithm deselection that isn't recognised.
4177 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4178 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4179 to use new functions. Add NO_ASN1_OLD which can be set to remove
4180 some old style ASN1 functions: this can be used to determine if old
4181 code will still work when these eventually go away.
4184 *) New extension functions for OCSP structures, these follow the
4185 same conventions as certificates and CRLs.
4188 *) New function X509V3_add1_i2d(). This automatically encodes and
4189 adds an extension. Its behaviour can be customised with various
4190 flags to append, replace or delete. Various wrappers added for
4191 certifcates and CRLs.
4194 *) Fix to avoid calling the underlying ASN1 print routine when
4195 an extension cannot be parsed. Correct a typo in the
4196 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4199 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4200 entries for variables.
4203 *) Add functionality to apps/openssl.c for detecting locking
4204 problems: As the program is single-threaded, all we have
4205 to do is register a locking callback using an array for
4206 storing which locks are currently held by the program.
4209 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4210 SSL_get_ex_data_X509_STORE_idx(), which is used in
4211 ssl_verify_cert_chain() and thus can be called at any time
4212 during TLS/SSL handshakes so that thread-safety is essential.
4213 Unfortunately, the ex_data design is not at all suited
4214 for multi-threaded use, so it probably should be abolished.
4217 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4218 [Broadcom, tweaked and integrated by Geoff Thorpe]
4220 *) Move common extension printing code to new function
4221 X509V3_print_extensions(). Reorganise OCSP print routines and
4222 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4225 *) New function X509_signature_print() to remove duplication in some
4229 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4230 set (this was treated exactly the same as SET OF previously). This
4231 is used to reorder the STACK representing the structure to match the
4232 encoding. This will be used to get round a problem where a PKCS7
4233 structure which was signed could not be verified because the STACK
4234 order did not reflect the encoded order.
4237 *) Reimplement the OCSP ASN1 module using the new code.
4240 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4241 for its ASN1 operations. The old style function pointers still exist
4242 for now but they will eventually go away.
4245 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4246 completely replaces the old ASN1 functionality with a table driven
4247 encoder and decoder which interprets an ASN1_ITEM structure describing
4248 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4249 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4250 has also been converted to the new form.
4253 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4254 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4255 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4256 for negative moduli.
4259 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4260 of not touching the result's sign bit.
4263 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4267 *) Changed the LHASH code to use prototypes for callbacks, and created
4268 macros to declare and implement thin (optionally static) functions
4269 that provide type-safety and avoid function pointer casting for the
4270 type-specific callbacks.
4273 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4275 [Veers Staats <staatsvr@asc.hpc.mil>,
4276 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4278 *) Reformat the FAQ so the different questions and answers can be divided
4279 in sections depending on the subject.
4282 *) Have the zlib compression code load ZLIB.DLL dynamically under
4286 *) New function BN_mod_sqrt for computing square roots modulo a prime
4287 (using the probabilistic Tonelli-Shanks algorithm unless
4288 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4289 be handled deterministically).
4290 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4292 *) Make BN_mod_inverse faster by explicitly handling small quotients
4293 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4294 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4297 *) New function BN_kronecker.
4300 *) Fix BN_gcd so that it works on negative inputs; the result is
4301 positive unless both parameters are zero.
4302 Previously something reasonably close to an infinite loop was
4303 possible because numbers could be growing instead of shrinking
4304 in the implementation of Euclid's algorithm.
4307 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4308 sign of the number in question.
4310 Fix BN_is_word(a,w) to work correctly for w == 0.
4312 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4313 because its test if the absolute value of 'a' equals 'w'.
4314 Note that BN_abs_is_word does *not* handle w == 0 reliably;
4315 it exists mostly for use in the implementations of BN_is_zero(),
4316 BN_is_one(), and BN_is_word().
4319 *) New function BN_swap.
4322 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
4323 the exponentiation functions are more likely to produce reasonable
4324 results on negative inputs.
4327 *) Change BN_mod_mul so that the result is always non-negative.
4328 Previously, it could be negative if one of the factors was negative;
4329 I don't think anyone really wanted that behaviour.
4332 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
4333 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
4334 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
4335 and add new functions:
4344 BN_mod_lshift1_quick
4348 These functions always generate non-negative results.
4350 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
4351 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
4353 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
4354 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
4355 be reduced modulo m.
4356 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4359 The following entry accidentily appeared in the CHANGES file
4360 distributed with OpenSSL 0.9.7. The modifications described in
4361 it do *not* apply to OpenSSL 0.9.7.
4363 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4364 was actually never needed) and in BN_mul(). The removal in BN_mul()
4365 required a small change in bn_mul_part_recursive() and the addition
4366 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4367 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4368 bn_sub_words() and bn_add_words() except they take arrays with
4373 *) In 'openssl passwd', verify passwords read from the terminal
4374 unless the '-salt' option is used (which usually means that
4375 verification would just waste user's time since the resulting
4376 hash is going to be compared with some given password hash)
4377 or the new '-noverify' option is used.
4379 This is an incompatible change, but it does not affect
4380 non-interactive use of 'openssl passwd' (passwords on the command
4381 line, '-stdin' option, '-in ...' option) and thus should not
4385 *) Remove all references to RSAref, since there's no more need for it.
4388 *) Make DSO load along a path given through an environment variable
4389 (SHLIB_PATH) with shl_load().
4392 *) Constify the ENGINE code as a result of BIGNUM constification.
4393 Also constify the RSA code and most things related to it. In a
4394 few places, most notable in the depth of the ASN.1 code, ugly
4395 casts back to non-const were required (to be solved at a later
4399 *) Make it so the openssl application has all engines loaded by default.
4402 *) Constify the BIGNUM routines a little more.
4405 *) Add the following functions:
4407 ENGINE_load_cswift()
4409 ENGINE_load_atalla()
4411 ENGINE_load_builtin_engines()
4413 That way, an application can itself choose if external engines that
4414 are built-in in OpenSSL shall ever be used or not. The benefit is
4415 that applications won't have to be linked with libdl or other dso
4416 libraries unless it's really needed.
4418 Changed 'openssl engine' to load all engines on demand.
4419 Changed the engine header files to avoid the duplication of some
4420 declarations (they differed!).
4423 *) 'openssl engine' can now list capabilities.
4426 *) Better error reporting in 'openssl engine'.
4429 *) Never call load_dh_param(NULL) in s_server.
4432 *) Add engine application. It can currently list engines by name and
4433 identity, and test if they are actually available.
4436 *) Improve RPM specification file by forcing symbolic linking and making
4437 sure the installed documentation is also owned by root.root.
4438 [Damien Miller <djm@mindrot.org>]
4440 *) Give the OpenSSL applications more possibilities to make use of
4441 keys (public as well as private) handled by engines.
4444 *) Add OCSP code that comes from CertCo.
4447 *) Add VMS support for the Rijndael code.
4450 *) Added untested support for Nuron crypto accelerator.
4453 *) Add support for external cryptographic devices. This code was
4454 previously distributed separately as the "engine" branch.
4455 [Geoff Thorpe, Richard Levitte]
4457 *) Rework the filename-translation in the DSO code. It is now possible to
4458 have far greater control over how a "name" is turned into a filename
4459 depending on the operating environment and any oddities about the
4460 different shared library filenames on each system.
4463 *) Support threads on FreeBSD-elf in Configure.
4466 *) Fix for SHA1 assembly problem with MASM: it produces
4467 warnings about corrupt line number information when assembling
4468 with debugging information. This is caused by the overlapping
4470 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
4473 NCONF_get_number() has no error checking at all. As a replacement,
4474 NCONF_get_number_e() is defined (_e for "error checking") and is
4475 promoted strongly. The old NCONF_get_number is kept around for
4476 binary backward compatibility.
4477 Make it possible for methods to load from something other than a BIO,
4478 by providing a function pointer that is given a name instead of a BIO.
4479 For example, this could be used to load configuration data from an
4483 *) Fix for non blocking accept BIOs. Added new I/O special reason
4484 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
4485 with non blocking I/O was not possible because no retry code was
4486 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
4490 *) Added the beginnings of Rijndael support.
4493 *) Fix for bug in DirectoryString mask setting. Add support for
4494 X509_NAME_print_ex() in 'req' and X509_print_ex() function
4495 to allow certificate printing to more controllable, additional
4496 'certopt' option to 'x509' to allow new printing options to be
4500 *) Clean old EAY MD5 hack from e_os.h.
4503 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
4505 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4506 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4507 [Joe Orton, Steve Henson]
4509 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
4511 *) Fix additional bug revealed by the NISCC test suite:
4513 Stop bug triggering large recursion when presented with
4514 certain ASN.1 tags (CVE-2003-0851)
4517 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
4519 *) Fix various bugs revealed by running the NISCC test suite:
4521 Stop out of bounds reads in the ASN1 code when presented with
4522 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4524 If verify callback ignores invalid public key errors don't try to check
4525 certificate signature with the NULL public key.
4529 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4530 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4534 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4535 extra data after the compression methods not only for TLS 1.0
4536 but also for SSL 3.0 (as required by the specification).
4537 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4539 *) Change X509_certificate_type() to mark the key as exported/exportable
4540 when it's 512 *bits* long, not 512 bytes.
4543 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4545 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4546 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4547 a protocol version number mismatch like a decryption error
4548 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4551 *) Turn on RSA blinding by default in the default implementation
4552 to avoid a timing attack. Applications that don't want it can call
4553 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4554 They would be ill-advised to do so in most cases.
4555 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4557 *) Change RSA blinding code so that it works when the PRNG is not
4558 seeded (in this case, the secret RSA exponent is abused as
4559 an unpredictable seed -- if it is not unpredictable, there
4560 is no point in blinding anyway). Make RSA blinding thread-safe
4561 by remembering the creator's thread ID in rsa->blinding and
4562 having all other threads use local one-time blinding factors
4563 (this requires more computation than sharing rsa->blinding, but
4564 avoids excessive locking; and if an RSA object is not shared
4565 between threads, blinding will still be very fast).
4568 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4570 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4571 via timing by performing a MAC computation even if incorrrect
4572 block cipher padding has been found. This is a countermeasure
4573 against active attacks where the attacker has to distinguish
4574 between bad padding and a MAC verification error. (CVE-2003-0078)
4576 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4577 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4578 Martin Vuagnoux (EPFL, Ilion)]
4580 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4582 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4583 memory from it's contents. This is done with a counter that will
4584 place alternating values in each byte. This can be used to solve
4585 two issues: 1) the removal of calls to memset() by highly optimizing
4586 compilers, and 2) cleansing with other values than 0, since those can
4587 be read through on certain media, for example a swap space on disk.
4590 *) Bugfix: client side session caching did not work with external caching,
4591 because the session->cipher setting was not restored when reloading
4592 from the external cache. This problem was masked, when
4593 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4594 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4597 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4598 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4599 [Zeev Lieber <zeev-l@yahoo.com>]
4601 *) Undo an undocumented change introduced in 0.9.6e which caused
4602 repeated calls to OpenSSL_add_all_ciphers() and
4603 OpenSSL_add_all_digests() to be ignored, even after calling
4607 *) Change the default configuration reader to deal with last line not
4608 being properly terminated.
4611 *) Change X509_NAME_cmp() so it applies the special rules on handling
4612 DN values that are of type PrintableString, as well as RDNs of type
4613 emailAddress where the value has the type ia5String.
4614 [stefank@valicert.com via Richard Levitte]
4616 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4617 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4618 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4619 the bitwise-OR of the two for use by the majority of applications
4620 wanting this behaviour, and update the docs. The documented
4621 behaviour and actual behaviour were inconsistent and had been
4622 changing anyway, so this is more a bug-fix than a behavioural
4624 [Geoff Thorpe, diagnosed by Nadav Har'El]
4626 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4627 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4630 *) Fix initialization code race conditions in
4631 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4632 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4633 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4634 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4635 ssl2_get_cipher_by_char(),
4636 ssl3_get_cipher_by_char().
4637 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4639 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4640 the cached sessions are flushed, as the remove_cb() might use ex_data
4641 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4642 (see [openssl.org #212]).
4643 [Geoff Thorpe, Lutz Jaenicke]
4645 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4646 length, instead of the encoding length to d2i_ASN1_OBJECT.
4649 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4651 *) [In 0.9.6g-engine release:]
4652 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4653 [Lynn Gazis <lgazis@rainbow.com>]
4655 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4657 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4658 and get fix the header length calculation.
4659 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4660 Alon Kantor <alonk@checkpoint.com> (and others),
4663 *) Use proper error handling instead of 'assertions' in buffer
4664 overflow checks added in 0.9.6e. This prevents DoS (the
4665 assertions could call abort()).
4666 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4668 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4670 *) Add various sanity checks to asn1_get_length() to reject
4671 the ASN1 length bytes if they exceed sizeof(long), will appear
4672 negative or the content length exceeds the length of the
4674 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4676 *) Fix cipher selection routines: ciphers without encryption had no flags
4677 for the cipher strength set and where therefore not handled correctly
4678 by the selection routines (PR #130).
4681 *) Fix EVP_dsa_sha macro.
4685 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4686 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4687 that was added in OpenSSL 0.9.6d.
4689 As the countermeasure turned out to be incompatible with some
4690 broken SSL implementations, the new option is part of SSL_OP_ALL.
4691 SSL_OP_ALL is usually employed when compatibility with weird SSL
4692 implementations is desired (e.g. '-bugs' option to 's_client' and
4693 's_server'), so the new option is automatically set in many
4697 *) Changes in security patch:
4699 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4700 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4701 Air Force Materiel Command, USAF, under agreement number
4704 *) Add various sanity checks to asn1_get_length() to reject
4705 the ASN1 length bytes if they exceed sizeof(long), will appear
4706 negative or the content length exceeds the length of the
4707 supplied buffer. (CVE-2002-0659)
4708 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4710 *) Assertions for various potential buffer overflows, not known to
4712 [Ben Laurie (CHATS)]
4714 *) Various temporary buffers to hold ASCII versions of integers were
4715 too small for 64 bit platforms. (CVE-2002-0655)
4716 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4718 *) Remote buffer overflow in SSL3 protocol - an attacker could
4719 supply an oversized session ID to a client. (CVE-2002-0656)
4720 [Ben Laurie (CHATS)]
4722 *) Remote buffer overflow in SSL2 protocol - an attacker could
4723 supply an oversized client master key. (CVE-2002-0656)
4724 [Ben Laurie (CHATS)]
4726 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4728 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4729 encoded as NULL) with id-dsa-with-sha1.
4730 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4732 *) Check various X509_...() return values in apps/req.c.
4733 [Nils Larsch <nla@trustcenter.de>]
4735 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4736 an end-of-file condition would erronously be flagged, when the CRLF
4737 was just at the end of a processed block. The bug was discovered when
4738 processing data through a buffering memory BIO handing the data to a
4739 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4740 <ptsekov@syntrex.com> and Nedelcho Stanev.
4743 *) Implement a countermeasure against a vulnerability recently found
4744 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4745 before application data chunks to avoid the use of known IVs
4746 with data potentially chosen by the attacker.
4749 *) Fix length checks in ssl3_get_client_hello().
4752 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4753 to prevent ssl3_read_internal() from incorrectly assuming that
4754 ssl3_read_bytes() found application data while handshake
4755 processing was enabled when in fact s->s3->in_read_app_data was
4756 merely automatically cleared during the initial handshake.
4757 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4759 *) Fix object definitions for Private and Enterprise: they were not
4760 recognized in their shortname (=lowercase) representation. Extend
4761 obj_dat.pl to issue an error when using undefined keywords instead
4762 of silently ignoring the problem (Svenning Sorensen
4763 <sss@sss.dnsalias.net>).
4766 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4767 generators, i.e. generators other than 2 and 5. (Previously, the
4768 code did not properly initialise the 'add' and 'rem' values to
4769 BN_generate_prime().)
4771 In the new general case, we do not insist that 'generator' is
4772 actually a primitive root: This requirement is rather pointless;
4773 a generator of the order-q subgroup is just as good, if not
4777 *) Map new X509 verification errors to alerts. Discovered and submitted by
4778 Tom Wu <tom@arcot.com>.
4781 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4782 returning non-zero before the data has been completely received
4783 when using non-blocking I/O.
4784 [Bodo Moeller; problem pointed out by John Hughes]
4786 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4787 [Ben Laurie, Lutz Jaenicke]
4789 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4790 Yoram Zahavi <YoramZ@gilian.com>).
4793 *) Add information about CygWin 1.3 and on, and preserve proper
4794 configuration for the versions before that.
4795 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4797 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4798 check whether we deal with a copy of a session and do not delete from
4799 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4800 <izhar@checkpoint.com>.
4803 *) Do not store session data into the internal session cache, if it
4804 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4805 flag is set). Proposed by Aslam <aslam@funk.com>.
4808 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4812 *) [In 0.9.6d-engine release:]
4813 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4814 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4816 *) Add the configuration target linux-s390x.
4817 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4819 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4820 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4821 variable as an indication that a ClientHello message has been
4822 received. As the flag value will be lost between multiple
4823 invocations of ssl3_accept when using non-blocking I/O, the
4824 function may not be aware that a handshake has actually taken
4825 place, thus preventing a new session from being added to the
4828 To avoid this problem, we now set s->new_session to 2 instead of
4829 using a local variable.
4830 [Lutz Jaenicke, Bodo Moeller]
4832 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4833 if the SSL_R_LENGTH_MISMATCH error is detected.
4834 [Geoff Thorpe, Bodo Moeller]
4836 *) New 'shared_ldflag' column in Configure platform table.
4839 *) Fix EVP_CIPHER_mode macro.
4840 ["Dan S. Camper" <dan@bti.net>]
4842 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4843 type, we must throw them away by setting rr->length to 0.
4844 [D P Chang <dpc@qualys.com>]
4846 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4848 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4849 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4850 worked incorrectly for those cases where range = 10..._2 and
4851 3*range is two bits longer than range.)
4854 *) Only add signing time to PKCS7 structures if it is not already
4858 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4859 OBJ_ld_ce should be OBJ_id_ce.
4860 Also some ip-pda OIDs in crypto/objects/objects.txt were
4861 incorrect (cf. RFC 3039).
4862 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4864 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4865 returns early because it has nothing to do.
4866 [Andy Schneider <andy.schneider@bjss.co.uk>]
4868 *) [In 0.9.6c-engine release:]
4869 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4870 [Andy Schneider <andy.schneider@bjss.co.uk>]
4872 *) [In 0.9.6c-engine release:]
4873 Add support for Cryptographic Appliance's keyserver technology.
4874 (Use engine 'keyclient')
4875 [Cryptographic Appliances and Geoff Thorpe]
4877 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4878 is called via tools/c89.sh because arguments have to be
4879 rearranged (all '-L' options must appear before the first object
4881 [Richard Shapiro <rshapiro@abinitio.com>]
4883 *) [In 0.9.6c-engine release:]
4884 Add support for Broadcom crypto accelerator cards, backported
4886 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4888 *) [In 0.9.6c-engine release:]
4889 Add support for SureWare crypto accelerator cards from
4890 Baltimore Technologies. (Use engine 'sureware')
4891 [Baltimore Technologies and Mark Cox]
4893 *) [In 0.9.6c-engine release:]
4894 Add support for crypto accelerator cards from Accelerated
4895 Encryption Processing, www.aep.ie. (Use engine 'aep')
4896 [AEP Inc. and Mark Cox]
4898 *) Add a configuration entry for gcc on UnixWare.
4899 [Gary Benson <gbenson@redhat.com>]
4901 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4902 messages are stored in a single piece (fixed-length part and
4903 variable-length part combined) and fix various bugs found on the way.
4906 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4907 instead. BIO_gethostbyname() does not know what timeouts are
4908 appropriate, so entries would stay in cache even when they have
4910 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4912 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4913 faced with a pathologically small ClientHello fragment that does
4914 not contain client_version: Instead of aborting with an error,
4915 simply choose the highest available protocol version (i.e.,
4916 TLS 1.0 unless it is disabled). In practice, ClientHello
4917 messages are never sent like this, but this change gives us
4918 strictly correct behaviour at least for TLS.
4921 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4922 never resets s->method to s->ctx->method when called from within
4923 one of the SSL handshake functions.
4924 [Bodo Moeller; problem pointed out by Niko Baric]
4926 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4927 (sent using the client's version number) if client_version is
4928 smaller than the protocol version in use. Also change
4929 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4930 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4931 the client will at least see that alert.
4934 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4938 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4939 client receives HelloRequest while in a handshake.
4940 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4942 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4943 should end in 'break', not 'goto end' which circuments various
4944 cleanups done in state SSL_ST_OK. But session related stuff
4945 must be disabled for SSL_ST_OK in the case that we just sent a
4948 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4949 before just sending a HelloRequest.
4950 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4952 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4953 reveal whether illegal block cipher padding was found or a MAC
4954 verification error occured. (Neither SSLerr() codes nor alerts
4955 are directly visible to potential attackers, but the information
4956 may leak via logfiles.)
4958 Similar changes are not required for the SSL 2.0 implementation
4959 because the number of padding bytes is sent in clear for SSL 2.0,
4960 and the extra bytes are just ignored. However ssl/s2_pkt.c
4961 failed to verify that the purported number of padding bytes is in
4965 *) Add OpenUNIX-8 support including shared libraries
4966 (Boyd Lynn Gerber <gerberb@zenez.com>).
4969 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4970 'wristwatch attack' using huge encoding parameters (cf.
4971 James H. Manger's CRYPTO 2001 paper). Note that the
4972 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4973 encoding parameters and hence was not vulnerable.
4976 *) BN_sqr() bug fix.
4977 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4979 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4980 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4981 followed by modular reduction.
4982 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4984 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4985 equivalent based on BN_pseudo_rand() instead of BN_rand().
4988 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4989 This function was broken, as the check for a new client hello message
4990 to handle SGC did not allow these large messages.
4991 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4994 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4997 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4998 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
5001 *) Rework the configuration and shared library support for Tru64 Unix.
5002 The configuration part makes use of modern compiler features and
5003 still retains old compiler behavior for those that run older versions
5004 of the OS. The shared library support part includes a variant that
5005 uses the RPATH feature, and is available through the special
5006 configuration target "alpha-cc-rpath", which will never be selected
5008 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
5010 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5011 with the same message size as in ssl3_get_certificate_request().
5012 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5013 messages might inadvertently be reject as too long.
5014 [Petr Lampa <lampa@fee.vutbr.cz>]
5016 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5019 *) Modified SSL library such that the verify_callback that has been set
5020 specificly for an SSL object with SSL_set_verify() is actually being
5021 used. Before the change, a verify_callback set with this function was
5022 ignored and the verify_callback() set in the SSL_CTX at the time of
5023 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5024 to allow the necessary settings.
5027 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5028 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5029 done automatically (in contradiction to the requirements of the C
5030 standard). This made problems when used from OpenSSH.
5033 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5034 dh->length and always used
5036 BN_rand_range(priv_key, dh->p).
5038 BN_rand_range() is not necessary for Diffie-Hellman, and this
5039 specific range makes Diffie-Hellman unnecessarily inefficient if
5040 dh->length (recommended exponent length) is much smaller than the
5041 length of dh->p. We could use BN_rand_range() if the order of
5042 the subgroup was stored in the DH structure, but we only have
5047 BN_rand(priv_key, l, ...)
5049 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5055 RSA_eay_public_encrypt
5056 RSA_eay_private_decrypt
5057 RSA_eay_private_encrypt (signing)
5058 RSA_eay_public_decrypt (signature verification)
5060 (default implementations for RSA_public_encrypt,
5061 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5062 always reject numbers >= n.
5065 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5066 to synchronize access to 'locking_thread'. This is necessary on
5067 systems where access to 'locking_thread' (an 'unsigned long'
5068 variable) is not atomic.
5071 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5072 *before* setting the 'crypto_lock_rand' flag. The previous code had
5073 a race condition if 0 is a valid thread ID.
5074 [Travis Vitek <vitek@roguewave.com>]
5076 *) Add support for shared libraries under Irix.
5077 [Albert Chin-A-Young <china@thewrittenword.com>]
5079 *) Add configuration option to build on Linux on both big-endian and
5081 [Ralf Baechle <ralf@uni-koblenz.de>]
5083 *) Add the possibility to create shared libraries on HP-UX.
5086 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5088 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5089 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5090 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5091 PRNG state recovery was possible based on the output of
5092 one PRNG request appropriately sized to gain knowledge on
5093 'md' followed by enough consecutive 1-byte PRNG requests
5094 to traverse all of 'state'.
5096 1. When updating 'md_local' (the current thread's copy of 'md')
5097 during PRNG output generation, hash all of the previous
5098 'md_local' value, not just the half used for PRNG output.
5100 2. Make the number of bytes from 'state' included into the hash
5101 independent from the number of PRNG bytes requested.
5103 The first measure alone would be sufficient to avoid
5104 Markku-Juhani's attack. (Actually it had never occurred
5105 to me that the half of 'md_local' used for chaining was the
5106 half from which PRNG output bytes were taken -- I had always
5107 assumed that the secret half would be used.) The second
5108 measure makes sure that additional data from 'state' is never
5109 mixed into 'md_local' in small portions; this heuristically
5110 further strengthens the PRNG.
5113 *) Fix crypto/bn/asm/mips3.s.
5116 *) When only the key is given to "enc", the IV is undefined. Print out
5117 an error message in this case.
5120 *) Handle special case when X509_NAME is empty in X509 printing routines.
5123 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5124 positive and less than q.
5127 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5128 used: it isn't thread safe and the add_lock_callback should handle
5130 [Paul Rose <Paul.Rose@bridge.com>]
5132 *) Verify that incoming data obeys the block size in
5133 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5137 [Ulf Möller, Bodo Möller]
5139 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5140 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5141 when fixing the server behaviour for backwards-compatible 'client
5142 hello' messages. (Note that the attack is impractical against
5143 SSL 3.0 and TLS 1.0 anyway because length and version checking
5144 means that the probability of guessing a valid ciphertext is
5145 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5148 Before 0.9.5, the countermeasure (hide the error by generating a
5149 random 'decryption result') did not work properly because
5150 ERR_clear_error() was missing, meaning that SSL_get_error() would
5151 detect the supposedly ignored error.
5153 Both problems are now fixed.
5156 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5157 (previously it was 1024).
5160 *) Fix for compatibility mode trust settings: ignore trust settings
5161 unless some valid trust or reject settings are present.
5164 *) Fix for blowfish EVP: its a variable length cipher.
5167 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5168 parameters in DSA public key structures and return an error in the
5169 DSA routines if parameters are absent.
5172 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5173 in the current directory if neither $RANDFILE nor $HOME was set.
5174 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5175 caused some confusion to Windows users who haven't defined $HOME.
5176 Thus RAND_file_name() is changed again: e_os.h can define a
5177 DEFAULT_HOME, which will be used if $HOME is not set.
5178 For Windows, we use "C:"; on other platforms, we still require
5179 environment variables.
5181 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5182 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5183 having multiple threads call RAND_poll() concurrently.
5186 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5187 combination of a flag and a thread ID variable.
5188 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5189 flag), *other* threads can enter ssleay_add_bytes without obeying
5190 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5191 that they do not hold after the first thread unsets add_do_not_lock).
5194 *) Change bctest again: '-x' expressions are not available in all
5198 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5200 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5201 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5203 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5204 the default extension for executables, if any. Also, make the perl
5205 scripts that use symlink() to test if it really exists and use "cp"
5206 if it doesn't. All this made OpenSSL compilable and installable in
5210 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5211 If SEQUENCE is length is indefinite just set c->slen to the total
5212 amount of data available.
5213 [Steve Henson, reported by shige@FreeBSD.org]
5214 [This change does not apply to 0.9.7.]
5216 *) Change bctest to avoid here-documents inside command substitution
5217 (workaround for FreeBSD /bin/sh bug).
5218 For compatibility with Ultrix, avoid shell functions (introduced
5219 in the bctest version that searches along $PATH).
5222 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5223 with des_encrypt() defined on some operating systems, like Solaris
5227 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5228 On the Importance of Eliminating Errors in Cryptographic
5229 Computations, J. Cryptology 14 (2001) 2, 101-119,
5230 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5233 *) MIPS assembler BIGNUM division bug fix.
5236 *) Disabled incorrect Alpha assembler code.
5239 *) Fix PKCS#7 decode routines so they correctly update the length
5240 after reading an EOC for the EXPLICIT tag.
5242 [This change does not apply to 0.9.7.]
5244 *) Fix bug in PKCS#12 key generation routines. This was triggered
5245 if a 3DES key was generated with a 0 initial byte. Include
5246 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5247 (but broken) behaviour.
5250 *) Enhance bctest to search for a working bc along $PATH and print
5252 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5254 *) Fix memory leaks in err.c: free err_data string if necessary;
5255 don't write to the wrong index in ERR_set_error_data.
5258 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5262 *) Replace rdtsc with _emit statements for VC++ version 5.
5263 [Jeremy Cooper <jeremy@baymoo.org>]
5265 *) Make it possible to reuse SSLv2 sessions.
5268 *) In copy_email() check for >= 0 as a return value for
5269 X509_NAME_get_index_by_NID() since 0 is a valid index.
5270 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5272 *) Avoid coredump with unsupported or invalid public keys by checking if
5273 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5274 PKCS7_verify() fails with non detached data.
5277 *) Don't use getenv in library functions when run as setuid/setgid.
5278 New function OPENSSL_issetugid().
5281 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5282 due to incorrect handling of multi-threading:
5284 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5286 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5288 3. Count how many times MemCheck_off() has been called so that
5289 nested use can be treated correctly. This also avoids
5290 inband-signalling in the previous code (which relied on the
5291 assumption that thread ID 0 is impossible).
5294 *) Add "-rand" option also to s_client and s_server.
5297 *) Fix CPU detection on Irix 6.x.
5298 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5299 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5301 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5304 [This change does not apply to 0.9.7.]
5306 *) Use the cached encoding of an X509_NAME structure rather than
5307 copying it. This is apparently the reason for the libsafe "errors"
5308 but the code is actually correct.
5311 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5312 Bleichenbacher's DSA attack.
5313 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
5314 to be set and top=0 forces the highest bit to be set; top=-1 is new
5315 and leaves the highest bit random.
5316 [Ulf Moeller, Bodo Moeller]
5318 *) In the NCONF_...-based implementations for CONF_... queries
5319 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
5320 a temporary CONF structure with the data component set to NULL
5321 (which gives segmentation faults in lh_retrieve).
5322 Instead, use NULL for the CONF pointer in CONF_get_string and
5323 CONF_get_number (which may use environment variables) and directly
5324 return NULL from CONF_get_section.
5327 *) Fix potential buffer overrun for EBCDIC.
5330 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
5331 keyUsage if basicConstraints absent for a CA.
5334 *) Make SMIME_write_PKCS7() write mail header values with a format that
5335 is more generally accepted (no spaces before the semicolon), since
5336 some programs can't parse those values properly otherwise. Also make
5337 sure BIO's that break lines after each write do not create invalid
5341 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
5342 macros previously used would not encode an empty SEQUENCE OF
5343 and break the signature.
5345 [This change does not apply to 0.9.7.]
5347 *) Zero the premaster secret after deriving the master secret in
5351 *) Add some EVP_add_digest_alias registrations (as found in
5352 OpenSSL_add_all_digests()) to SSL_library_init()
5353 aka OpenSSL_add_ssl_algorithms(). This provides improved
5354 compatibility with peers using X.509 certificates
5355 with unconventional AlgorithmIdentifier OIDs.
5358 *) Fix for Irix with NO_ASM.
5359 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5361 *) ./config script fixes.
5362 [Ulf Moeller, Richard Levitte]
5364 *) Fix 'openssl passwd -1'.
5367 *) Change PKCS12_key_gen_asc() so it can cope with non null
5368 terminated strings whose length is passed in the passlen
5369 parameter, for example from PEM callbacks. This was done
5370 by adding an extra length parameter to asc2uni().
5371 [Steve Henson, reported by <oddissey@samsung.co.kr>]
5373 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
5374 call failed, free the DSA structure.
5377 *) Fix to uni2asc() to cope with zero length Unicode strings.
5378 These are present in some PKCS#12 files.
5381 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
5382 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
5383 when writing a 32767 byte record.
5384 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
5386 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
5387 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
5389 (RSA objects have a reference count access to which is protected
5390 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
5391 so they are meant to be shared between threads.)
5392 [Bodo Moeller, Geoff Thorpe; original patch submitted by
5393 "Reddie, Steven" <Steven.Reddie@ca.com>]
5395 *) Fix a deadlock in CRYPTO_mem_leaks().
5398 *) Use better test patterns in bntest.
5401 *) rand_win.c fix for Borland C.
5404 *) BN_rshift bugfix for n == 0.
5407 *) Add a 'bctest' script that checks for some known 'bc' bugs
5408 so that 'make test' does not abort just because 'bc' is broken.
5411 *) Store verify_result within SSL_SESSION also for client side to
5412 avoid potential security hole. (Re-used sessions on the client side
5413 always resulted in verify_result==X509_V_OK, not using the original
5414 result of the server certificate verification.)
5417 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
5418 SSL3_RT_APPLICATION_DATA, return 0.
5419 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
5423 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
5424 releases, have been re-implemented by renaming the previous
5425 implementations of ssl2_read and ssl3_read to ssl2_read_internal
5426 and ssl3_read_internal, respectively, and adding 'peek' parameters
5427 to them. The new ssl[23]_{read,peek} functions are calls to
5428 ssl[23]_read_internal with the 'peek' flag set appropriately.
5429 A 'peek' parameter has also been added to ssl3_read_bytes, which
5430 does the actual work for ssl3_read_internal.
5433 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
5434 the method-specific "init()" handler. Also clean up ex_data after
5435 calling the method-specific "finish()" handler. Previously, this was
5436 happening the other way round.
5439 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
5440 The previous value, 12, was not always sufficient for BN_mod_exp().
5443 *) Make sure that shared libraries get the internal name engine with
5444 the full version number and not just 0. This should mark the
5445 shared libraries as not backward compatible. Of course, this should
5446 be changed again when we can guarantee backward binary compatibility.
5449 *) Fix typo in get_cert_by_subject() in by_dir.c
5450 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
5452 *) Rework the system to generate shared libraries:
5454 - Make note of the expected extension for the shared libraries and
5455 if there is a need for symbolic links from for example libcrypto.so.0
5456 to libcrypto.so.0.9.7. There is extended info in Configure for
5459 - Make as few rebuilds of the shared libraries as possible.
5461 - Still avoid linking the OpenSSL programs with the shared libraries.
5463 - When installing, install the shared libraries separately from the
5467 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
5469 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
5470 and not in SSL_clear because the latter is also used by the
5471 accept/connect functions; previously, the settings made by
5472 SSL_set_read_ahead would be lost during the handshake.
5473 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
5475 *) Correct util/mkdef.pl to be selective about disabled algorithms.
5476 Previously, it would create entries for disableed algorithms no
5480 *) Added several new manual pages for SSL_* function.
5483 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
5485 *) In ssl23_get_client_hello, generate an error message when faced
5486 with an initial SSL 3.0/TLS record that is too small to contain the
5487 first two bytes of the ClientHello message, i.e. client_version.
5488 (Note that this is a pathologic case that probably has never happened
5489 in real life.) The previous approach was to use the version number
5490 from the record header as a substitute; but our protocol choice
5491 should not depend on that one because it is not authenticated
5492 by the Finished messages.
5495 *) More robust randomness gathering functions for Windows.
5496 [Jeffrey Altman <jaltman@columbia.edu>]
5498 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
5499 not set then we don't setup the error code for issuer check errors
5500 to avoid possibly overwriting other errors which the callback does
5501 handle. If an application does set the flag then we assume it knows
5502 what it is doing and can handle the new informational codes
5506 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
5507 a general "ANY" type, as such it should be able to decode anything
5508 including tagged types. However it didn't check the class so it would
5509 wrongly interpret tagged types in the same way as their universal
5510 counterpart and unknown types were just rejected. Changed so that the
5511 tagged and unknown types are handled in the same way as a SEQUENCE:
5512 that is the encoding is stored intact. There is also a new type
5513 "V_ASN1_OTHER" which is used when the class is not universal, in this
5514 case we have no idea what the actual type is so we just lump them all
5518 *) On VMS, stdout may very well lead to a file that is written to
5519 in a record-oriented fashion. That means that every write() will
5520 write a separate record, which will be read separately by the
5521 programs trying to read from it. This can be very confusing.
5523 The solution is to put a BIO filter in the way that will buffer
5524 text until a linefeed is reached, and then write everything a
5525 line at a time, so every record written will be an actual line,
5526 not chunks of lines and not (usually doesn't happen, but I've
5527 seen it once) several lines in one record. BIO_f_linebuffer() is
5530 Currently, it's a VMS-only method, because that's where it has
5531 been tested well enough.
5534 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
5535 it can return incorrect results.
5536 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
5537 but it was in 0.9.6-beta[12].)
5540 *) Disable the check for content being present when verifying detached
5541 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5542 include zero length content when signing messages.
5545 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5546 BIO_ctrl (for BIO pairs).
5549 *) Add DSO method for VMS.
5552 *) Bug fix: Montgomery multiplication could produce results with the
5556 *) Add RPM specification openssl.spec and modify it to build three
5557 packages. The default package contains applications, application
5558 documentation and run-time libraries. The devel package contains
5559 include files, static libraries and function documentation. The
5560 doc package contains the contents of the doc directory. The original
5561 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5564 *) Add a large number of documentation files for many SSL routines.
5565 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5567 *) Add a configuration entry for Sony News 4.
5568 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5570 *) Don't set the two most significant bits to one when generating a
5571 random number < q in the DSA library.
5574 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5575 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5576 the underlying transport is blocking) if a handshake took place.
5577 (The default behaviour is needed by applications such as s_client
5578 and s_server that use select() to determine when to use SSL_read;
5579 but for applications that know in advance when to expect data, it
5580 just makes things more complicated.)
5583 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5587 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5588 work better on such systems.
5589 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5591 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5592 Update PKCS12_parse() so it copies the friendlyName and the
5593 keyid to the certificates aux info.
5596 *) Fix bug in PKCS7_verify() which caused an infinite loop
5597 if there was more than one signature.
5598 [Sven Uszpelkat <su@celocom.de>]
5600 *) Major change in util/mkdef.pl to include extra information
5601 about each symbol, as well as presentig variables as well
5602 as functions. This change means that there's n more need
5603 to rebuild the .num files when some algorithms are excluded.
5606 *) Allow the verify time to be set by an application,
5607 rather than always using the current time.
5610 *) Phase 2 verify code reorganisation. The certificate
5611 verify code now looks up an issuer certificate by a
5612 number of criteria: subject name, authority key id
5613 and key usage. It also verifies self signed certificates
5614 by the same criteria. The main comparison function is
5615 X509_check_issued() which performs these checks.
5617 Lot of changes were necessary in order to support this
5618 without completely rewriting the lookup code.
5620 Authority and subject key identifier are now cached.
5622 The LHASH 'certs' is X509_STORE has now been replaced
5623 by a STACK_OF(X509_OBJECT). This is mainly because an
5624 LHASH can't store or retrieve multiple objects with
5625 the same hash value.
5627 As a result various functions (which were all internal
5628 use only) have changed to handle the new X509_STORE
5629 structure. This will break anything that messed round
5630 with X509_STORE internally.
5632 The functions X509_STORE_add_cert() now checks for an
5633 exact match, rather than just subject name.
5635 The X509_STORE API doesn't directly support the retrieval
5636 of multiple certificates matching a given criteria, however
5637 this can be worked round by performing a lookup first
5638 (which will fill the cache with candidate certificates)
5639 and then examining the cache for matches. This is probably
5640 the best we can do without throwing out X509_LOOKUP
5641 entirely (maybe later...).
5643 The X509_VERIFY_CTX structure has been enhanced considerably.
5645 All certificate lookup operations now go via a get_issuer()
5646 callback. Although this currently uses an X509_STORE it
5647 can be replaced by custom lookups. This is a simple way
5648 to bypass the X509_STORE hackery necessary to make this
5649 work and makes it possible to use more efficient techniques
5650 in future. A very simple version which uses a simple
5651 STACK for its trusted certificate store is also provided
5652 using X509_STORE_CTX_trusted_stack().
5654 The verify_cb() and verify() callbacks now have equivalents
5655 in the X509_STORE_CTX structure.
5657 X509_STORE_CTX also has a 'flags' field which can be used
5658 to customise the verify behaviour.
5661 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5662 excludes S/MIME capabilities.
5665 *) When a certificate request is read in keep a copy of the
5666 original encoding of the signed data and use it when outputing
5667 again. Signatures then use the original encoding rather than
5668 a decoded, encoded version which may cause problems if the
5669 request is improperly encoded.
5672 *) For consistency with other BIO_puts implementations, call
5673 buffer_write(b, ...) directly in buffer_puts instead of calling
5676 In BIO_puts, increment b->num_write as in BIO_write.
5677 [Peter.Sylvester@EdelWeb.fr]
5679 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5680 BN_zero, we may not return a BIGNUM with an array consisting of
5684 *) Avoid calling abort() from within the library when problems are
5685 detected, except if preprocessor symbols have been defined
5686 (such as REF_CHECK, BN_DEBUG etc.).
5689 *) New openssl application 'rsautl'. This utility can be
5690 used for low level RSA operations. DER public key
5691 BIO/fp routines also added.
5694 *) New Configure entry and patches for compiling on QNX 4.
5695 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5697 *) A demo state-machine implementation was sponsored by
5698 Nuron (http://www.nuron.com/) and is now available in
5699 demos/state_machine.
5702 *) New options added to the 'dgst' utility for signature
5703 generation and verification.
5706 *) Unrecognized PKCS#7 content types are now handled via a
5707 catch all ASN1_TYPE structure. This allows unsupported
5708 types to be stored as a "blob" and an application can
5709 encode and decode it manually.
5712 *) Fix various signed/unsigned issues to make a_strex.c
5714 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5716 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5717 length if passed a buffer. ASN1_INTEGER_to_BN failed
5718 if passed a NULL BN and its argument was negative.
5719 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5721 *) Modification to PKCS#7 encoding routines to output definite
5722 length encoding. Since currently the whole structures are in
5723 memory there's not real point in using indefinite length
5724 constructed encoding. However if OpenSSL is compiled with
5725 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5728 *) Added BIO_vprintf() and BIO_vsnprintf().
5731 *) Added more prefixes to parse for in the the strings written
5732 through a logging bio, to cover all the levels that are available
5733 through syslog. The prefixes are now:
5735 PANIC, EMERG, EMR => LOG_EMERG
5736 ALERT, ALR => LOG_ALERT
5737 CRIT, CRI => LOG_CRIT
5738 ERROR, ERR => LOG_ERR
5739 WARNING, WARN, WAR => LOG_WARNING
5740 NOTICE, NOTE, NOT => LOG_NOTICE
5741 INFO, INF => LOG_INFO
5742 DEBUG, DBG => LOG_DEBUG
5744 and as before, if none of those prefixes are present at the
5745 beginning of the string, LOG_ERR is chosen.
5747 On Win32, the LOG_* levels are mapped according to this:
5749 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5750 LOG_WARNING => EVENTLOG_WARNING_TYPE
5751 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5755 *) Made it possible to reconfigure with just the configuration
5756 argument "reconf" or "reconfigure". The command line arguments
5757 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5758 and are retrieved from there when reconfiguring.
5762 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5764 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5767 *) The obj_dat.pl script was messing up the sorting of object
5768 names. The reason was that it compared the quoted version
5769 of strings as a result "OCSP" > "OCSP Signing" because
5770 " > SPACE. Changed script to store unquoted versions of
5771 names and add quotes on output. It was also omitting some
5772 names from the lookup table if they were given a default
5773 value (that is if SN is missing it is given the same
5774 value as LN and vice versa), these are now added on the
5775 grounds that if an object has a name we should be able to
5776 look it up. Finally added warning output when duplicate
5777 short or long names are found.
5780 *) Changes needed for Tandem NSK.
5781 [Scott Uroff <scott@xypro.com>]
5783 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5784 RSA_padding_check_SSLv23(), special padding was never detected
5785 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5786 version rollback attacks was not effective.
5788 In s23_clnt.c, don't use special rollback-attack detection padding
5789 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5790 client; similarly, in s23_srvr.c, don't do the rollback check if
5791 SSL 2.0 is the only protocol enabled in the server.
5794 *) Make it possible to get hexdumps of unprintable data with 'openssl
5795 asn1parse'. By implication, the functions ASN1_parse_dump() and
5796 BIO_dump_indent() are added.
5799 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5800 these print out strings and name structures based on various
5801 flags including RFC2253 support and proper handling of
5802 multibyte characters. Added options to the 'x509' utility
5803 to allow the various flags to be set.
5806 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5807 Also change the functions X509_cmp_current_time() and
5808 X509_gmtime_adj() work with an ASN1_TIME structure,
5809 this will enable certificates using GeneralizedTime in validity
5810 dates to be checked.
5813 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5814 negative public key encodings) on by default,
5815 NO_NEG_PUBKEY_BUG can be set to disable it.
5818 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5819 content octets. An i2c_ASN1_OBJECT is unnecessary because
5820 the encoding can be trivially obtained from the structure.
5823 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5824 not read locks (CRYPTO_r_[un]lock).
5827 *) A first attempt at creating official support for shared
5828 libraries through configuration. I've kept it so the
5829 default is static libraries only, and the OpenSSL programs
5830 are always statically linked for now, but there are
5831 preparations for dynamic linking in place.
5832 This has been tested on Linux and Tru64.
5835 *) Randomness polling function for Win9x, as described in:
5836 Peter Gutmann, Software Generation of Practically Strong
5840 *) Fix so PRNG is seeded in req if using an already existing
5844 *) New options to smime application. -inform and -outform
5845 allow alternative formats for the S/MIME message including
5846 PEM and DER. The -content option allows the content to be
5847 specified separately. This should allow things like Netscape
5848 form signing output easier to verify.
5851 *) Fix the ASN1 encoding of tags using the 'long form'.
5854 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5855 STRING types. These convert content octets to and from the
5856 underlying type. The actual tag and length octets are
5857 already assumed to have been read in and checked. These
5858 are needed because all other string types have virtually
5859 identical handling apart from the tag. By having versions
5860 of the ASN1 functions that just operate on content octets
5861 IMPLICIT tagging can be handled properly. It also allows
5862 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5863 and ASN1_INTEGER are identical apart from the tag.
5866 *) Change the handling of OID objects as follows:
5868 - New object identifiers are inserted in objects.txt, following
5869 the syntax given in objects.README.
5870 - objects.pl is used to process obj_mac.num and create a new
5872 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5875 This is currently kind of a hack, and the perl code in objects.pl
5876 isn't very elegant, but it works as I intended. The simplest way
5877 to check that it worked correctly is to look in obj_dat.h and
5878 check the array nid_objs and make sure the objects haven't moved
5879 around (this is important!). Additions are OK, as well as
5880 consistent name changes.
5883 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5886 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5887 The given file adds to whatever has already been seeded into the
5888 random pool through the RANDFILE configuration file option or
5889 environment variable, or the default random state file.
5892 *) mkstack.pl now sorts each macro group into lexical order.
5893 Previously the output order depended on the order the files
5894 appeared in the directory, resulting in needless rewriting
5898 *) Patches to make OpenSSL compile under Win32 again. Mostly
5899 work arounds for the VC++ problem that it treats func() as
5900 func(void). Also stripped out the parts of mkdef.pl that
5901 added extra typesafe functions: these no longer exist.
5904 *) Reorganisation of the stack code. The macros are now all
5905 collected in safestack.h . Each macro is defined in terms of
5906 a "stack macro" of the form SKM_<name>(type, a, b). The
5907 DEBUG_SAFESTACK is now handled in terms of function casts,
5908 this has the advantage of retaining type safety without the
5909 use of additional functions. If DEBUG_SAFESTACK is not defined
5910 then the non typesafe macros are used instead. Also modified the
5911 mkstack.pl script to handle the new form. Needs testing to see
5912 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5913 the default if no major problems. Similar behaviour for ASN1_SET_OF
5914 and PKCS12_STACK_OF.
5917 *) When some versions of IIS use the 'NET' form of private key the
5918 key derivation algorithm is different. Normally MD5(password) is
5919 used as a 128 bit RC4 key. In the modified case
5920 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5921 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5922 as the old Netscape_RSA functions except they have an additional
5923 'sgckey' parameter which uses the modified algorithm. Also added
5924 an -sgckey command line option to the rsa utility. Thanks to
5925 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5926 algorithm to openssl-dev.
5929 *) The evp_local.h macros were using 'c.##kname' which resulted in
5930 invalid expansion on some systems (SCO 5.0.5 for example).
5931 Corrected to 'c.kname'.
5932 [Phillip Porch <root@theporch.com>]
5934 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5935 a STACK of email addresses from a certificate or request, these look
5936 in the subject name and the subject alternative name extensions and
5937 omit any duplicate addresses.
5940 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5941 This makes DSA verification about 2 % faster.
5944 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5945 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5946 plus overhead for 1024 bit moduli).
5947 This makes exponentiations about 0.5 % faster for 1024 bit
5948 exponents (as measured by "openssl speed rsa2048").
5951 *) Rename memory handling macros to avoid conflicts with other
5953 Malloc => OPENSSL_malloc
5954 Malloc_locked => OPENSSL_malloc_locked
5955 Realloc => OPENSSL_realloc
5956 Free => OPENSSL_free
5959 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5960 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5963 *) CygWin32 support.
5964 [John Jarvie <jjarvie@newsguy.com>]
5966 *) The type-safe stack code has been rejigged. It is now only compiled
5967 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5968 by default all type-specific stack functions are "#define"d back to
5969 standard stack functions. This results in more streamlined output
5970 but retains the type-safety checking possibilities of the original
5974 *) The STACK code has been cleaned up, and certain type declarations
5975 that didn't make a lot of sense have been brought in line. This has
5976 also involved a cleanup of sorts in safestack.h to more correctly
5977 map type-safe stack functions onto their plain stack counterparts.
5978 This work has also resulted in a variety of "const"ifications of
5979 lots of the code, especially "_cmp" operations which should normally
5980 be prototyped with "const" parameters anyway.
5983 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5984 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5985 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5986 where all of 'md' is used each time the PRNG is used, but 'state'
5987 is used only indexed by a cyclic counter. As entropy may not be
5988 well distributed from the beginning, 'md' is important as a
5989 chaining variable. However, the output function chains only half
5990 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5991 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5992 in all of 'state' being rewritten, with the new values depending
5993 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5996 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5997 the handshake is continued after ssl_verify_cert_chain();
5998 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5999 can lead to 'unexplainable' connection aborts later.
6000 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
6002 *) Major EVP API cipher revision.
6003 Add hooks for extra EVP features. This allows various cipher
6004 parameters to be set in the EVP interface. Support added for variable
6005 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
6006 setting of RC2 and RC5 parameters.
6008 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6011 Remove lots of duplicated code from the EVP library. For example *every*
6012 cipher init() function handles the 'iv' in the same way according to the
6013 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6014 for CFB and OFB modes they zero ctx->num.
6016 New functionality allows removal of S/MIME code RC2 hack.
6018 Most of the routines have the same form and so can be declared in terms
6021 By shifting this to the top level EVP_CipherInit() it can be removed from
6022 all individual ciphers. If the cipher wants to handle IVs or keys
6023 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6026 Change lots of functions like EVP_EncryptUpdate() to now return a
6027 value: although software versions of the algorithms cannot fail
6028 any installed hardware versions can.
6031 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6032 this option is set, tolerate broken clients that send the negotiated
6033 protocol version number instead of the requested protocol version
6037 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6038 i.e. non-zero for export ciphersuites, zero otherwise.
6039 Previous versions had this flag inverted, inconsistent with
6040 rsa_tmp_cb (..._TMP_RSA_CB).
6041 [Bodo Moeller; problem reported by Amit Chopra]
6043 *) Add missing DSA library text string. Work around for some IIS
6044 key files with invalid SEQUENCE encoding.
6047 *) Add a document (doc/standards.txt) that list all kinds of standards
6048 and so on that are implemented in OpenSSL.
6051 *) Enhance c_rehash script. Old version would mishandle certificates
6052 with the same subject name hash and wouldn't handle CRLs at all.
6053 Added -fingerprint option to crl utility, to support new c_rehash
6057 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6060 *) Fix for SSL server purpose checking. Server checking was
6061 rejecting certificates which had extended key usage present
6062 but no ssl client purpose.
6063 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6065 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6066 is a little unclear about how a blank password is handled.
6067 Since the password in encoded as a BMPString with terminating
6068 double NULL a zero length password would end up as just the
6069 double NULL. However no password at all is different and is
6070 handled differently in the PKCS#12 key generation code. NS
6071 treats a blank password as zero length. MSIE treats it as no
6072 password on export: but it will try both on import. We now do
6073 the same: PKCS12_parse() tries zero length and no password if
6074 the password is set to "" or NULL (NULL is now a valid password:
6075 it wasn't before) as does the pkcs12 application.
6078 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6079 perror when PEM_read_bio_X509_REQ fails, the error message must
6080 be obtained from the error queue.
6083 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6084 it in ERR_remove_state if appropriate, and change ERR_get_state
6085 accordingly to avoid race conditions (this is necessary because
6086 thread_hash is no longer constant once set).
6089 *) Bugfix for linux-elf makefile.one.
6092 *) RSA_get_default_method() will now cause a default
6093 RSA_METHOD to be chosen if one doesn't exist already.
6094 Previously this was only set during a call to RSA_new()
6095 or RSA_new_method(NULL) meaning it was possible for
6096 RSA_get_default_method() to return NULL.
6099 *) Added native name translation to the existing DSO code
6100 that will convert (if the flag to do so is set) filenames
6101 that are sufficiently small and have no path information
6102 into a canonical native form. Eg. "blah" converted to
6103 "libblah.so" or "blah.dll" etc.
6106 *) New function ERR_error_string_n(e, buf, len) which is like
6107 ERR_error_string(e, buf), but writes at most 'len' bytes
6108 including the 0 terminator. For ERR_error_string_n, 'buf'
6110 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6112 *) CONF library reworked to become more general. A new CONF
6113 configuration file reader "class" is implemented as well as a
6114 new functions (NCONF_*, for "New CONF") to handle it. The now
6115 old CONF_* functions are still there, but are reimplemented to
6116 work in terms of the new functions. Also, a set of functions
6117 to handle the internal storage of the configuration data is
6118 provided to make it easier to write new configuration file
6119 reader "classes" (I can definitely see something reading a
6120 configuration file in XML format, for example), called _CONF_*,
6121 or "the configuration storage API"...
6123 The new configuration file reading functions are:
6125 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6126 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6128 NCONF_default, NCONF_WIN32
6130 NCONF_dump_fp, NCONF_dump_bio
6132 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6133 NCONF_new creates a new CONF object. This works in the same way
6134 as other interfaces in OpenSSL, like the BIO interface.
6135 NCONF_dump_* dump the internal storage of the configuration file,
6136 which is useful for debugging. All other functions take the same
6137 arguments as the old CONF_* functions wth the exception of the
6138 first that must be a `CONF *' instead of a `LHASH *'.
6140 To make it easer to use the new classes with the old CONF_* functions,
6141 the function CONF_set_default_method is provided.
6144 *) Add '-tls1' option to 'openssl ciphers', which was already
6145 mentioned in the documentation but had not been implemented.
6146 (This option is not yet really useful because even the additional
6147 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6150 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6151 OpenSSL-based applications) load shared libraries and bind to
6152 them in a portable way.
6153 [Geoff Thorpe, with contributions from Richard Levitte]
6155 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6157 *) Make sure _lrotl and _lrotr are only used with MSVC.
6159 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6160 (the default implementation of RAND_status).
6162 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6163 to '-clrext' (= clear extensions), as intended and documented.
6164 [Bodo Moeller; inconsistency pointed out by Michael Attili
6167 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6168 was larger than the MD block size.
6169 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6171 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6172 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6173 using the passed key: if the passed key was a private key the result
6174 of X509_print(), for example, would be to print out all the private key
6178 *) des_quad_cksum() byte order bug fix.
6179 [Ulf Möller, using the problem description in krb4-0.9.7, where
6180 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6182 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6184 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6186 *) For easily testing in shell scripts whether some command
6187 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6188 returns with exit code 0 iff no command of the given name is available.
6189 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6190 the output goes to stdout and nothing is printed to stderr.
6191 Additional arguments are always ignored.
6193 Since for each cipher there is a command of the same name,
6194 the 'no-cipher' compilation switches can be tested this way.
6196 ('openssl no-XXX' is not able to detect pseudo-commands such
6197 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6200 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6203 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6204 is set; it will be thrown away anyway because each handshake creates
6206 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6207 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6208 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6209 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6212 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6213 'Q' and 'R' lose their special meanings (quit/renegotiate).
6214 This is part of what -quiet does; unlike -quiet, -ign_eof
6215 does not suppress any output.
6218 *) Add compatibility options to the purpose and trust code. The
6219 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6220 accepts a certificate or CA, this was the previous behaviour,
6221 with all the associated security issues.
6223 X509_TRUST_COMPAT is the old trust behaviour: only and
6224 automatically trust self signed roots in certificate store. A
6225 new trust setting X509_TRUST_DEFAULT is used to specify that
6226 a purpose has no associated trust setting and it should instead
6227 use the value in the default purpose.
6230 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6231 and fix a memory leak.
6234 *) In util/mkerr.pl (which implements 'make errors'), preserve
6235 reason strings from the previous version of the .c file, as
6236 the default to have only downcase letters (and digits) in
6237 automatically generated reasons codes is not always appropriate.
6240 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6241 using strerror. Previously, ERR_reason_error_string() returned
6242 library names as reason strings for SYSerr; but SYSerr is a special
6243 case where small numbers are errno values, not library numbers.
6246 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6247 converts DSA parameters into DH parameters. (When creating parameters,
6248 DSA_generate_parameters is used.)
6251 *) Include 'length' (recommended exponent length) in C code generated
6252 by 'openssl dhparam -C'.
6255 *) The second argument to set_label in perlasm was already being used
6256 so couldn't be used as a "file scope" flag. Moved to third argument
6260 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6261 instead of RAND_bytes for encryption IVs and salts.
6264 *) Include RAND_status() into RAND_METHOD instead of implementing
6265 it only for md_rand.c Otherwise replacing the PRNG by calling
6266 RAND_set_rand_method would be impossible.
6269 *) Don't let DSA_generate_key() enter an infinite loop if the random
6270 number generation fails.
6273 *) New 'rand' application for creating pseudo-random output.
6276 *) Added configuration support for Linux/IA64
6277 [Rolf Haberrecker <rolf@suse.de>]
6279 *) Assembler module support for Mingw32.
6282 *) Shared library support for HPUX (in shlib/).
6283 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6285 *) Shared library support for Solaris gcc.
6286 [Lutz Behnke <behnke@trustcenter.de>]
6288 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6290 *) PKCS7_encrypt() was adding text MIME headers twice because they
6291 were added manually and by SMIME_crlf_copy().
6294 *) In bntest.c don't call BN_rand with zero bits argument.
6295 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6297 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6298 case was implemented. This caused BN_div_recp() to fail occasionally.
6301 *) Add an optional second argument to the set_label() in the perl
6302 assembly language builder. If this argument exists and is set
6303 to 1 it signals that the assembler should use a symbol whose
6304 scope is the entire file, not just the current function. This
6305 is needed with MASM which uses the format label:: for this scope.
6306 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6308 *) Change the ASN1 types so they are typedefs by default. Before
6309 almost all types were #define'd to ASN1_STRING which was causing
6310 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
6314 *) Change names of new functions to the new get1/get0 naming
6315 convention: After 'get1', the caller owns a reference count
6316 and has to call ..._free; 'get0' returns a pointer to some
6317 data structure without incrementing reference counters.
6318 (Some of the existing 'get' functions increment a reference
6319 counter, some don't.)
6320 Similarly, 'set1' and 'add1' functions increase reference
6321 counters or duplicate objects.
6324 *) Allow for the possibility of temp RSA key generation failure:
6325 the code used to assume it always worked and crashed on failure.
6328 *) Fix potential buffer overrun problem in BIO_printf().
6329 [Ulf Möller, using public domain code by Patrick Powell; problem
6330 pointed out by David Sacerdote <das33@cornell.edu>]
6332 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
6333 RAND_egd() and RAND_status(). In the command line application,
6334 the EGD socket can be specified like a seed file using RANDFILE
6338 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
6339 Some CAs (e.g. Verisign) distribute certificates in this form.
6342 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
6343 list to exclude them. This means that no special compilation option
6344 is needed to use anonymous DH: it just needs to be included in the
6348 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
6349 EVP_MD_type. The old functionality is available in a new macro called
6350 EVP_MD_md(). Change code that uses it and update docs.
6353 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
6354 where the 'void *' argument is replaced by a function pointer argument.
6355 Previously 'void *' was abused to point to functions, which works on
6356 many platforms, but is not correct. As these functions are usually
6357 called by macros defined in OpenSSL header files, most source code
6358 should work without changes.
6361 *) <openssl/opensslconf.h> (which is created by Configure) now contains
6362 sections with information on -D... compiler switches used for
6363 compiling the library so that applications can see them. To enable
6364 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
6365 must be defined. E.g.,
6366 #define OPENSSL_ALGORITHM_DEFINES
6367 #include <openssl/opensslconf.h>
6368 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
6369 [Richard Levitte, Ulf and Bodo Möller]
6371 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
6375 *) Change the 'other' type in certificate aux info to a STACK_OF
6376 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
6377 the required ASN1 format: arbitrary types determined by an OID.
6380 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
6381 argument to 'req'. This is not because the function is newer or
6382 better than others it just uses the work 'NEW' in the certificate
6383 request header lines. Some software needs this.
6386 *) Reorganise password command line arguments: now passwords can be
6387 obtained from various sources. Delete the PEM_cb function and make
6388 it the default behaviour: i.e. if the callback is NULL and the
6389 usrdata argument is not NULL interpret it as a null terminated pass
6390 phrase. If usrdata and the callback are NULL then the pass phrase
6391 is prompted for as usual.
6394 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
6395 the support is automatically enabled. The resulting binaries will
6396 autodetect the card and use it if present.
6397 [Ben Laurie and Compaq Inc.]
6399 *) Work around for Netscape hang bug. This sends certificate request
6400 and server done in one record. Since this is perfectly legal in the
6401 SSL/TLS protocol it isn't a "bug" option and is on by default. See
6402 the bugs/SSLv3 entry for more info.
6405 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
6408 *) Add -rand argument to smime and pkcs12 applications and read/write
6412 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
6415 *) Add command line password options to the remaining applications.
6418 *) Bug fix for BN_div_recp() for numerators with an even number of
6422 *) More tests in bntest.c, and changed test_bn output.
6425 *) ./config recognizes MacOS X now.
6428 *) Bug fix for BN_div() when the first words of num and divsor are
6429 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
6432 *) Add support for various broken PKCS#8 formats, and command line
6433 options to produce them.
6436 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
6437 get temporary BIGNUMs from a BN_CTX.
6440 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
6444 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
6445 include a #define from the old name to the new. The original intent
6446 was that statically linked binaries could for example just call
6447 SSLeay_add_all_ciphers() to just add ciphers to the table and not
6448 link with digests. This never worked becayse SSLeay_add_all_digests()
6449 and SSLeay_add_all_ciphers() were in the same source file so calling
6450 one would link with the other. They are now in separate source files.
6453 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
6456 *) Use a less unusual form of the Miller-Rabin primality test (it used
6457 a binary algorithm for exponentiation integrated into the Miller-Rabin
6458 loop, our standard modexp algorithms are faster).
6461 *) Support for the EBCDIC character set completed.
6462 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
6464 *) Source code cleanups: use const where appropriate, eliminate casts,
6465 use void * instead of char * in lhash.
6468 *) Bugfix: ssl3_send_server_key_exchange was not restartable
6469 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
6470 this the server could overwrite ephemeral keys that the client
6474 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
6475 using 50 iterations of the Rabin-Miller test.
6477 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
6478 iterations of the Rabin-Miller test as required by the appendix
6479 to FIPS PUB 186[-1]) instead of DSA_is_prime.
6480 As BN_is_prime_fasttest includes trial division, DSA parameter
6481 generation becomes much faster.
6483 This implies a change for the callback functions in DSA_is_prime
6484 and DSA_generate_parameters: The callback function is called once
6485 for each positive witness in the Rabin-Miller test, not just
6486 occasionally in the inner loop; and the parameters to the
6487 callback function now provide an iteration count for the outer
6488 loop rather than for the current invocation of the inner loop.
6489 DSA_generate_parameters additionally can call the callback
6490 function with an 'iteration count' of -1, meaning that a
6491 candidate has passed the trial division test (when q is generated
6492 from an application-provided seed, trial division is skipped).
6495 *) New function BN_is_prime_fasttest that optionally does trial
6496 division before starting the Rabin-Miller test and has
6497 an additional BN_CTX * argument (whereas BN_is_prime always
6498 has to allocate at least one BN_CTX).
6499 'callback(1, -1, cb_arg)' is called when a number has passed the
6500 trial division stage.
6503 *) Fix for bug in CRL encoding. The validity dates weren't being handled
6507 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
6510 *) New function BN_pseudo_rand().
6513 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
6514 bignum version of BN_from_montgomery() with the working code from
6515 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
6519 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
6520 made it impossible to use the same SSL_SESSION data structure in
6521 SSL2 clients in multiple threads.
6524 *) The return value of RAND_load_file() no longer counts bytes obtained
6525 by stat(). RAND_load_file(..., -1) is new and uses the complete file
6526 to seed the PRNG (previously an explicit byte count was required).
6527 [Ulf Möller, Bodo Möller]
6529 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
6530 used (char *) instead of (void *) and had casts all over the place.
6533 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
6536 *) Retain source code compatibility for BN_prime_checks macro:
6537 BN_is_prime(..., BN_prime_checks, ...) now uses
6538 BN_prime_checks_for_size to determine the appropriate number of
6539 Rabin-Miller iterations.
6542 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6543 DH_CHECK_P_NOT_SAFE_PRIME.
6544 (Check if this is true? OpenPGP calls them "strong".)
6547 *) Merge the functionality of "dh" and "gendh" programs into a new program
6548 "dhparam". The old programs are retained for now but will handle DH keys
6549 (instead of parameters) in future.
6552 *) Make the ciphers, s_server and s_client programs check the return values
6553 when a new cipher list is set.
6556 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6557 ciphers. Before when the 56bit ciphers were enabled the sorting was
6560 The syntax for the cipher sorting has been extended to support sorting by
6561 cipher-strength (using the strength_bits hard coded in the tables).
6562 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6564 Fix a bug in the cipher-command parser: when supplying a cipher command
6565 string with an "undefined" symbol (neither command nor alphanumeric
6566 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6567 an error is flagged.
6569 Due to the strength-sorting extension, the code of the
6570 ssl_create_cipher_list() function was completely rearranged. I hope that
6571 the readability was also increased :-)
6572 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6574 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6575 for the first serial number and places 2 in the serial number file. This
6576 avoids problems when the root CA is created with serial number zero and
6577 the first user certificate has the same issuer name and serial number
6581 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6582 the new code. Add documentation for this stuff.
6585 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6586 X509_*() to X509at_*() on the grounds that they don't handle X509
6587 structures and behave in an analagous way to the X509v3 functions:
6588 they shouldn't be called directly but wrapper functions should be used
6591 So we also now have some wrapper functions that call the X509at functions
6592 when passed certificate requests. (TO DO: similar things can be done with
6593 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6594 things. Some of these need some d2i or i2d and print functionality
6595 because they handle more complex structures.)
6598 *) Add missing #ifndefs that caused missing symbols when building libssl
6599 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6600 NO_RSA in ssl/s2*.c.
6601 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6603 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6604 has a return value which indicates the quality of the random data
6605 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6606 error queue. New function RAND_pseudo_bytes() generates output that is
6607 guaranteed to be unique but not unpredictable. RAND_add is like
6608 RAND_seed, but takes an extra argument for an entropy estimate
6609 (RAND_seed always assumes full entropy).
6612 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6613 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6614 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6615 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6616 false-positive rate of at most 2^-80 for random input.
6619 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6622 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6623 in the 0.9.5 release), this returns the chain
6624 from an X509_CTX structure with a dup of the stack and all
6625 the X509 reference counts upped: so the stack will exist
6626 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6629 Also make SSL_SESSION_print() print out the verify return
6633 *) Add manpage for the pkcs12 command. Also change the default
6634 behaviour so MAC iteration counts are used unless the new
6635 -nomaciter option is used. This improves file security and
6636 only older versions of MSIE (4.0 for example) need it.
6639 *) Honor the no-xxx Configure options when creating .DEF files.
6642 *) Add PKCS#10 attributes to field table: challengePassword,
6643 unstructuredName and unstructuredAddress. These are taken from
6644 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6645 international characters are used.
6647 More changes to X509_ATTRIBUTE code: allow the setting of types
6648 based on strings. Remove the 'loc' parameter when adding
6649 attributes because these will be a SET OF encoding which is sorted
6653 *) Initial changes to the 'req' utility to allow request generation
6654 automation. This will allow an application to just generate a template
6655 file containing all the field values and have req construct the
6658 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6659 used all over the place including certificate requests and PKCS#7
6660 structures. They are currently handled manually where necessary with
6661 some primitive wrappers for PKCS#7. The new functions behave in a
6662 manner analogous to the X509 extension functions: they allow
6663 attributes to be looked up by NID and added.
6665 Later something similar to the X509V3 code would be desirable to
6666 automatically handle the encoding, decoding and printing of the
6667 more complex types. The string types like challengePassword can
6668 be handled by the string table functions.
6670 Also modified the multi byte string table handling. Now there is
6671 a 'global mask' which masks out certain types. The table itself
6672 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6673 is useful when for example there is only one permissible type
6674 (as in countryName) and using the mask might result in no valid
6678 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6679 SSL_get_peer_finished to allow applications to obtain the latest
6680 Finished messages sent to the peer or expected from the peer,
6681 respectively. (SSL_get_peer_finished is usually the Finished message
6682 actually received from the peer, otherwise the protocol will be aborted.)
6684 As the Finished message are message digests of the complete handshake
6685 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6686 be used for external authentication procedures when the authentication
6687 provided by SSL/TLS is not desired or is not enough.
6690 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6691 the host supports BWX extension and if Compaq C is present on the
6692 $PATH. Just exploiting of the BWX extension results in 20-30%
6693 performance kick for some algorithms, e.g. DES and RC4 to mention
6694 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6698 *) Add support for MS "fast SGC". This is arguably a violation of the
6699 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6700 weak crypto and after checking the certificate is SGC a second one
6701 with strong crypto. MS SGC stops the first handshake after receiving
6702 the server certificate message and sends a second client hello. Since
6703 a server will typically do all the time consuming operations before
6704 expecting any further messages from the client (server key exchange
6705 is the most expensive) there is little difference between the two.
6707 To get OpenSSL to support MS SGC we have to permit a second client
6708 hello message after we have sent server done. In addition we have to
6709 reset the MAC if we do get this second client hello.
6712 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6713 if a DER encoded private key is RSA or DSA traditional format. Changed
6714 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6715 format DER encoded private key. Newer code should use PKCS#8 format which
6716 has the key type encoded in the ASN1 structure. Added DER private key
6717 support to pkcs8 application.
6720 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6721 ciphersuites has been selected (as required by the SSL 3/TLS 1
6722 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6723 is set, we interpret this as a request to violate the specification
6724 (the worst that can happen is a handshake failure, and 'correct'
6725 behaviour would result in a handshake failure anyway).
6728 *) In SSL_CTX_add_session, take into account that there might be multiple
6729 SSL_SESSION structures with the same session ID (e.g. when two threads
6730 concurrently obtain them from an external cache).
6731 The internal cache can handle only one SSL_SESSION with a given ID,
6732 so if there's a conflict, we now throw out the old one to achieve
6736 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6737 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6738 some routines that use cipher OIDs: some ciphers do not have OIDs
6739 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6743 *) Simplify the trust setting structure and code. Now we just have
6744 two sequences of OIDs for trusted and rejected settings. These will
6745 typically have values the same as the extended key usage extension
6746 and any application specific purposes.
6748 The trust checking code now has a default behaviour: it will just
6749 check for an object with the same NID as the passed id. Functions can
6750 be provided to override either the default behaviour or the behaviour
6751 for a given id. SSL client, server and email already have functions
6752 in place for compatibility: they check the NID and also return "trusted"
6753 if the certificate is self signed.
6756 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6757 traditional format into an EVP_PKEY structure.
6760 *) Add a password callback function PEM_cb() which either prompts for
6761 a password if usr_data is NULL or otherwise assumes it is a null
6762 terminated password. Allow passwords to be passed on command line
6763 environment or config files in a few more utilities.
6766 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6767 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6768 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6769 Update documentation.
6772 *) Support for ASN1 "NULL" type. This could be handled before by using
6773 ASN1_TYPE but there wasn't any function that would try to read a NULL
6774 and produce an error if it couldn't. For compatibility we also have
6775 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6776 don't allocate anything because they don't need to.
6779 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6781 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6783 *) Rebuild of the memory allocation routines used by OpenSSL code and
6784 possibly others as well. The purpose is to make an interface that
6785 provide hooks so anyone can build a separate set of allocation and
6786 deallocation routines to be used by OpenSSL, for example memory
6787 pool implementations, or something else, which was previously hard
6788 since Malloc(), Realloc() and Free() were defined as macros having
6789 the values malloc, realloc and free, respectively (except for Win32
6790 compilations). The same is provided for memory debugging code.
6791 OpenSSL already comes with functionality to find memory leaks, but
6792 this gives people a chance to debug other memory problems.
6794 With these changes, a new set of functions and macros have appeared:
6796 CRYPTO_set_mem_debug_functions() [F]
6797 CRYPTO_get_mem_debug_functions() [F]
6798 CRYPTO_dbg_set_options() [F]
6799 CRYPTO_dbg_get_options() [F]
6800 CRYPTO_malloc_debug_init() [M]
6802 The memory debug functions are NULL by default, unless the library
6803 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6804 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6805 gives the standard debugging functions that come with OpenSSL) or
6806 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6807 provided by the library user) must be used. When the standard
6808 debugging functions are used, CRYPTO_dbg_set_options can be used to
6809 request additional information:
6810 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6811 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6813 Also, things like CRYPTO_set_mem_functions will always give the
6814 expected result (the new set of functions is used for allocation
6815 and deallocation) at all times, regardless of platform and compiler
6818 To finish it up, some functions that were never use in any other
6819 way than through macros have a new API and new semantic:
6822 CRYPTO_dbg_realloc()
6825 All macros of value have retained their old syntax.
6826 [Richard Levitte and Bodo Moeller]
6828 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6829 ordering of SMIMECapabilities wasn't in "strength order" and there
6830 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6834 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6835 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6836 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6838 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6839 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6840 functionality to handle multipart/signed properly) and a utility
6841 called 'smime' to call all this stuff. This is based on code I
6842 originally wrote for Celo who have kindly allowed it to be
6843 included in OpenSSL.
6846 *) Add variants des_set_key_checked and des_set_key_unchecked of
6847 des_set_key (aka des_key_sched). Global variable des_check_key
6848 decides which of these is called by des_set_key; this way
6849 des_check_key behaves as it always did, but applications and
6850 the library itself, which was buggy for des_check_key == 1,
6851 have a cleaner way to pick the version they need.
6854 *) New function PKCS12_newpass() which changes the password of a
6858 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6859 dynamic mix. In both cases the ids can be used as an index into the
6860 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6861 functions so they accept a list of the field values and the
6862 application doesn't need to directly manipulate the X509_TRUST
6866 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6870 *) Modify the way the V3 extension code looks up extensions. This now
6871 works in a similar way to the object code: we have some "standard"
6872 extensions in a static table which is searched with OBJ_bsearch()
6873 and the application can add dynamic ones if needed. The file
6874 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6875 updated whenever a new extension is added to the core code and kept
6876 in ext_nid order. There is a simple program 'tabtest.c' which checks
6877 this. New extensions are not added too often so this file can readily
6878 be maintained manually.
6880 There are two big advantages in doing things this way. The extensions
6881 can be looked up immediately and no longer need to be "added" using
6882 X509V3_add_standard_extensions(): this function now does nothing.
6883 [Side note: I get *lots* of email saying the extension code doesn't
6884 work because people forget to call this function]
6885 Also no dynamic allocation is done unless new extensions are added:
6886 so if we don't add custom extensions there is no need to call
6887 X509V3_EXT_cleanup().
6890 *) Modify enc utility's salting as follows: make salting the default. Add a
6891 magic header, so unsalted files fail gracefully instead of just decrypting
6892 to garbage. This is because not salting is a big security hole, so people
6893 should be discouraged from doing it.
6896 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6897 digest to be passed on the command line but it only used this
6898 parameter when signing a certificate. Modified so all relevant
6899 operations are affected by the digest parameter including the
6900 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6901 DSA key was used because it didn't fix the digest.
6904 *) Initial certificate chain verify code. Currently tests the untrusted
6905 certificates for consistency with the verify purpose (which is set
6906 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6908 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6909 this is because it will reject chains with invalid extensions whereas
6910 every previous version of OpenSSL and SSLeay made no checks at all.
6912 Trust code: checks the root CA for the relevant trust settings. Trust
6913 settings have an initial value consistent with the verify purpose: e.g.
6914 if the verify purpose is for SSL client use it expects the CA to be
6915 trusted for SSL client use. However the default value can be changed to
6916 permit custom trust settings: one example of this would be to only trust
6917 certificates from a specific "secure" set of CAs.
6919 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6920 which should be used for version portability: especially since the
6921 verify structure is likely to change more often now.
6923 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6924 to set them. If not set then assume SSL clients will verify SSL servers
6927 Two new options to the verify program: -untrusted allows a set of
6928 untrusted certificates to be passed in and -purpose which sets the
6929 intended purpose of the certificate. If a purpose is set then the
6930 new chain verify code is used to check extension consistency.
6933 *) Support for the authority information access extension.
6936 *) Modify RSA and DSA PEM read routines to transparently handle
6937 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6938 public keys in a format compatible with certificate
6939 SubjectPublicKeyInfo structures. Unfortunately there were already
6940 functions called *_PublicKey_* which used various odd formats so
6941 these are retained for compatibility: however the DSA variants were
6942 never in a public release so they have been deleted. Changed dsa/rsa
6943 utilities to handle the new format: note no releases ever handled public
6944 keys so we should be OK.
6946 The primary motivation for this change is to avoid the same fiasco
6947 that dogs private keys: there are several incompatible private key
6948 formats some of which are standard and some OpenSSL specific and
6949 require various evil hacks to allow partial transparent handling and
6950 even then it doesn't work with DER formats. Given the option anything
6951 other than PKCS#8 should be dumped: but the other formats have to
6952 stay in the name of compatibility.
6954 With public keys and the benefit of hindsight one standard format
6955 is used which works with EVP_PKEY, RSA or DSA structures: though
6956 it clearly returns an error if you try to read the wrong kind of key.
6958 Added a -pubkey option to the 'x509' utility to output the public key.
6959 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6960 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6961 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6962 that do the same as the EVP_PKEY_assign_*() except they up the
6963 reference count of the added key (they don't "swallow" the
6967 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6968 CRLs would fail if the file contained no certificates or no CRLs:
6969 added a new function to read in both types and return the number
6970 read: this means that if none are read it will be an error. The
6971 DER versions of the certificate and CRL reader would always fail
6972 because it isn't possible to mix certificates and CRLs in DER format
6973 without choking one or the other routine. Changed this to just read
6974 a certificate: this is the best we can do. Also modified the code
6975 in apps/verify.c to take notice of return codes: it was previously
6976 attempting to read in certificates from NULL pointers and ignoring
6977 any errors: this is one reason why the cert and CRL reader seemed
6978 to work. It doesn't check return codes from the default certificate
6979 routines: these may well fail if the certificates aren't installed.
6982 *) Code to support otherName option in GeneralName.
6985 *) First update to verify code. Change the verify utility
6986 so it warns if it is passed a self signed certificate:
6987 for consistency with the normal behaviour. X509_verify
6988 has been modified to it will now verify a self signed
6989 certificate if *exactly* the same certificate appears
6990 in the store: it was previously impossible to trust a
6991 single self signed certificate. This means that:
6992 openssl verify ss.pem
6993 now gives a warning about a self signed certificate but
6994 openssl verify -CAfile ss.pem ss.pem
6998 *) For servers, store verify_result in SSL_SESSION data structure
6999 (and add it to external session representation).
7000 This is needed when client certificate verifications fails,
7001 but an application-provided verification callback (set by
7002 SSL_CTX_set_cert_verify_callback) allows accepting the session
7003 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
7004 but returns 1): When the session is reused, we have to set
7005 ssl->verify_result to the appropriate error code to avoid
7007 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
7009 *) Fix a bug in the new PKCS#7 code: it didn't consider the
7010 case in PKCS7_dataInit() where the signed PKCS7 structure
7011 didn't contain any existing data because it was being created.
7012 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7014 *) Add a salt to the key derivation routines in enc.c. This
7015 forms the first 8 bytes of the encrypted file. Also add a
7016 -S option to allow a salt to be input on the command line.
7019 *) New function X509_cmp(). Oddly enough there wasn't a function
7020 to compare two certificates. We do this by working out the SHA1
7021 hash and comparing that. X509_cmp() will be needed by the trust
7025 *) SSL_get1_session() is like SSL_get_session(), but increments
7026 the reference count in the SSL_SESSION returned.
7027 [Geoff Thorpe <geoff@eu.c2.net>]
7029 *) Fix for 'req': it was adding a null to request attributes.
7030 Also change the X509_LOOKUP and X509_INFO code to handle
7031 certificate auxiliary information.
7034 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7038 *) Add the possibility to add extra information to the memory leak
7039 detecting output, to form tracebacks, showing from where each
7040 allocation was originated: CRYPTO_push_info("constant string") adds
7041 the string plus current file name and line number to a per-thread
7042 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7043 is like calling CYRPTO_pop_info() until the stack is empty.
7044 Also updated memory leak detection code to be multi-thread-safe.
7047 *) Add options -text and -noout to pkcs7 utility and delete the
7048 encryption options which never did anything. Update docs.
7051 *) Add options to some of the utilities to allow the pass phrase
7052 to be included on either the command line (not recommended on
7053 OSes like Unix) or read from the environment. Update the
7054 manpages and fix a few bugs.
7057 *) Add a few manpages for some of the openssl commands.
7060 *) Fix the -revoke option in ca. It was freeing up memory twice,
7061 leaking and not finding already revoked certificates.
7064 *) Extensive changes to support certificate auxiliary information.
7065 This involves the use of X509_CERT_AUX structure and X509_AUX
7066 functions. An X509_AUX function such as PEM_read_X509_AUX()
7067 can still read in a certificate file in the usual way but it
7068 will also read in any additional "auxiliary information". By
7069 doing things this way a fair degree of compatibility can be
7070 retained: existing certificates can have this information added
7071 using the new 'x509' options.
7073 Current auxiliary information includes an "alias" and some trust
7074 settings. The trust settings will ultimately be used in enhanced
7075 certificate chain verification routines: currently a certificate
7076 can only be trusted if it is self signed and then it is trusted
7080 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7081 The problem was that one of the replacement routines had not been working
7082 since SSLeay releases. For now the offending routine has been replaced
7083 with non-optimised assembler. Even so, this now gives around 95%
7084 performance improvement for 1024 bit RSA signs.
7087 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7088 handling. Most clients have the effective key size in bits equal to
7089 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7090 A few however don't do this and instead use the size of the decrypted key
7091 to determine the RC2 key length and the AlgorithmIdentifier to determine
7092 the effective key length. In this case the effective key length can still
7093 be 40 bits but the key length can be 168 bits for example. This is fixed
7094 by manually forcing an RC2 key into the EVP_PKEY structure because the
7095 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7096 the key length and effective key length are equal.
7099 *) Add a bunch of functions that should simplify the creation of
7100 X509_NAME structures. Now you should be able to do:
7101 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7102 and have it automatically work out the correct field type and fill in
7103 the structures. The more adventurous can try:
7104 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7105 and it will (hopefully) work out the correct multibyte encoding.
7108 *) Change the 'req' utility to use the new field handling and multibyte
7109 copy routines. Before the DN field creation was handled in an ad hoc
7110 way in req, ca, and x509 which was rather broken and didn't support
7111 BMPStrings or UTF8Strings. Since some software doesn't implement
7112 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7113 using the dirstring_type option. See the new comment in the default
7114 openssl.cnf for more info.
7117 *) Make crypto/rand/md_rand.c more robust:
7118 - Assure unique random numbers after fork().
7119 - Make sure that concurrent threads access the global counter and
7120 md serializably so that we never lose entropy in them
7121 or use exactly the same state in multiple threads.
7122 Access to the large state is not always serializable because
7123 the additional locking could be a performance killer, and
7124 md should be large enough anyway.
7127 *) New file apps/app_rand.c with commonly needed functionality
7128 for handling the random seed file.
7130 Use the random seed file in some applications that previously did not:
7132 dsaparam -genkey (which also ignored its '-rand' option),
7135 x509 (when signing).
7136 Except on systems with /dev/urandom, it is crucial to have a random
7137 seed file at least for key creation, DSA signing, and for DH exchanges;
7138 for RSA signatures we could do without one.
7140 gendh and gendsa (unlike genrsa) used to read only the first byte
7141 of each file listed in the '-rand' option. The function as previously
7142 found in genrsa is now in app_rand.c and is used by all programs
7143 that support '-rand'.
7146 *) In RAND_write_file, use mode 0600 for creating files;
7147 don't just chmod when it may be too late.
7150 *) Report an error from X509_STORE_load_locations
7151 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7154 *) New function ASN1_mbstring_copy() this copies a string in either
7155 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7156 into an ASN1_STRING type. A mask of permissible types is passed
7157 and it chooses the "minimal" type to use or an error if not type
7161 *) Add function equivalents to the various macros in asn1.h. The old
7162 macros are retained with an M_ prefix. Code inside the library can
7163 use the M_ macros. External code (including the openssl utility)
7164 should *NOT* in order to be "shared library friendly".
7167 *) Add various functions that can check a certificate's extensions
7168 to see if it usable for various purposes such as SSL client,
7169 server or S/MIME and CAs of these types. This is currently
7170 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7171 verification. Also added a -purpose flag to x509 utility to
7172 print out all the purposes.
7175 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7179 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7180 for, obtain and decode and extension and obtain its critical flag.
7181 This allows all the necessary extension code to be handled in a
7182 single function call.
7185 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7186 platforms. See crypto/rc4/rc4_enc.c for further details.
7189 *) New -noout option to asn1parse. This causes no output to be produced
7190 its main use is when combined with -strparse and -out to extract data
7191 from a file (which may not be in ASN.1 format).
7194 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7195 when producing the local key id.
7196 [Richard Levitte <levitte@stacken.kth.se>]
7198 *) New option -dhparam in s_server. This allows a DH parameter file to be
7199 stated explicitly. If it is not stated then it tries the first server
7200 certificate file. The previous behaviour hard coded the filename
7204 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7205 a public key to be input or output. For example:
7206 openssl rsa -in key.pem -pubout -out pubkey.pem
7207 Also added necessary DSA public key functions to handle this.
7210 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7211 in the message. This was handled by allowing
7212 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7213 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7215 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7216 to the end of the strings whereas this didn't. This would cause problems
7217 if strings read with d2i_ASN1_bytes() were later modified.
7218 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7220 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7221 data and it contains EOF it will end up returning an error. This is
7222 caused by input 46 bytes long. The cause is due to the way base64
7223 BIOs find the start of base64 encoded data. They do this by trying a
7224 trial decode on each line until they find one that works. When they
7225 do a flag is set and it starts again knowing it can pass all the
7226 data directly through the decoder. Unfortunately it doesn't reset
7227 the context it uses. This means that if EOF is reached an attempt
7228 is made to pass two EOFs through the context and this causes the
7229 resulting error. This can also cause other problems as well. As is
7230 usual with these problems it takes *ages* to find and the fix is
7231 trivial: move one line.
7232 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7234 *) Ugly workaround to get s_client and s_server working under Windows. The
7235 old code wouldn't work because it needed to select() on sockets and the
7236 tty (for keypresses and to see if data could be written). Win32 only
7237 supports select() on sockets so we select() with a 1s timeout on the
7238 sockets and then see if any characters are waiting to be read, if none
7239 are present then we retry, we also assume we can always write data to
7240 the tty. This isn't nice because the code then blocks until we've
7241 received a complete line of data and it is effectively polling the
7242 keyboard at 1s intervals: however it's quite a bit better than not
7243 working at all :-) A dedicated Windows application might handle this
7244 with an event loop for example.
7247 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7248 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7249 will be called when RSA_sign() and RSA_verify() are used. This is useful
7250 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7251 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7252 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7253 This necessitated the support of an extra signature type NID_md5_sha1
7254 for SSL signatures and modifications to the SSL library to use it instead
7255 of calling RSA_public_decrypt() and RSA_private_encrypt().
7258 *) Add new -verify -CAfile and -CApath options to the crl program, these
7259 will lookup a CRL issuers certificate and verify the signature in a
7260 similar way to the verify program. Tidy up the crl program so it
7261 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7262 less strict. It will now permit CRL extensions even if it is not
7263 a V2 CRL: this will allow it to tolerate some broken CRLs.
7266 *) Initialize all non-automatic variables each time one of the openssl
7267 sub-programs is started (this is necessary as they may be started
7268 multiple times from the "OpenSSL>" prompt).
7269 [Lennart Bang, Bodo Moeller]
7271 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7272 removing all other RSA functionality (this is what NO_RSA does). This
7273 is so (for example) those in the US can disable those operations covered
7274 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7278 *) Non-copying interface to BIO pairs.
7279 (still largely untested)
7282 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7283 ASCII string. This was handled independently in various places before.
7286 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7287 UTF8 strings a character at a time.
7290 *) Use client_version from client hello to select the protocol
7291 (s23_srvr.c) and for RSA client key exchange verification
7292 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7295 *) Add various utility functions to handle SPKACs, these were previously
7296 handled by poking round in the structure internals. Added new function
7297 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7298 print, verify and generate SPKACs. Based on an original idea from
7299 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7302 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7305 *) Allow the config file extension section to be overwritten on the
7306 command line. Based on an original idea from Massimiliano Pala
7307 <madwolf@comune.modena.it>. The new option is called -extensions
7308 and can be applied to ca, req and x509. Also -reqexts to override
7309 the request extensions in req and -crlexts to override the crl extensions
7313 *) Add new feature to the SPKAC handling in ca. Now you can include
7314 the same field multiple times by preceding it by "XXXX." for example:
7317 this is the same syntax as used in the req config file.
7320 *) Allow certificate extensions to be added to certificate requests. These
7321 are specified in a 'req_extensions' option of the req section of the
7322 config file. They can be printed out with the -text option to req but
7323 are otherwise ignored at present.
7326 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
7327 data read consists of only the final block it would not decrypted because
7328 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
7329 A misplaced 'break' also meant the decrypted final block might not be
7330 copied until the next read.
7333 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
7334 a few extra parameters to the DH structure: these will be useful if
7335 for example we want the value of 'q' or implement X9.42 DH.
7338 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
7339 provides hooks that allow the default DSA functions or functions on a
7340 "per key" basis to be replaced. This allows hardware acceleration and
7341 hardware key storage to be handled without major modification to the
7342 library. Also added low level modexp hooks and CRYPTO_EX structure and
7343 associated functions.
7346 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
7347 as "read only": it can't be written to and the buffer it points to will
7348 not be freed. Reading from a read only BIO is much more efficient than
7349 a normal memory BIO. This was added because there are several times when
7350 an area of memory needs to be read from a BIO. The previous method was
7351 to create a memory BIO and write the data to it, this results in two
7352 copies of the data and an O(n^2) reading algorithm. There is a new
7353 function BIO_new_mem_buf() which creates a read only memory BIO from
7354 an area of memory. Also modified the PKCS#7 routines to use read only
7358 *) Bugfix: ssl23_get_client_hello did not work properly when called in
7359 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
7360 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
7361 but a retry condition occured while trying to read the rest.
7364 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
7365 NID_pkcs7_encrypted by default: this was wrong since this should almost
7366 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
7367 the encrypted data type: this is a more sensible place to put it and it
7368 allows the PKCS#12 code to be tidied up that duplicated this
7372 *) Changed obj_dat.pl script so it takes its input and output files on
7373 the command line. This should avoid shell escape redirection problems
7377 *) Initial support for certificate extension requests, these are included
7378 in things like Xenroll certificate requests. Included functions to allow
7379 extensions to be obtained and added.
7382 *) -crlf option to s_client and s_server for sending newlines as
7383 CRLF (as required by many protocols).
7386 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
7388 *) Install libRSAglue.a when OpenSSL is built with RSAref.
7389 [Ralf S. Engelschall]
7391 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
7392 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
7394 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
7398 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
7399 DH parameters/keys (q is lost during that conversion, but the resulting
7400 DH parameters contain its length).
7402 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
7403 much faster than DH_generate_parameters (which creates parameters
7404 where p = 2*q + 1), and also the smaller q makes DH computations
7405 much more efficient (160-bit exponentiation instead of 1024-bit
7406 exponentiation); so this provides a convenient way to support DHE
7407 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
7408 utter importance to use
7409 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7411 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7412 when such DH parameters are used, because otherwise small subgroup
7413 attacks may become possible!
7416 *) Avoid memory leak in i2d_DHparams.
7419 *) Allow the -k option to be used more than once in the enc program:
7420 this allows the same encrypted message to be read by multiple recipients.
7423 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
7424 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
7425 it will always use the numerical form of the OID, even if it has a short
7429 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
7430 method only got called if p,q,dmp1,dmq1,iqmp components were present,
7431 otherwise bn_mod_exp was called. In the case of hardware keys for example
7432 no private key components need be present and it might store extra data
7433 in the RSA structure, which cannot be accessed from bn_mod_exp.
7434 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
7435 private key operations.
7438 *) Added support for SPARC Linux.
7441 *) pem_password_cb function type incompatibly changed from
7442 typedef int pem_password_cb(char *buf, int size, int rwflag);
7444 ....(char *buf, int size, int rwflag, void *userdata);
7445 so that applications can pass data to their callbacks:
7446 The PEM[_ASN1]_{read,write}... functions and macros now take an
7447 additional void * argument, which is just handed through whenever
7448 the password callback is called.
7449 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
7451 New function SSL_CTX_set_default_passwd_cb_userdata.
7453 Compatibility note: As many C implementations push function arguments
7454 onto the stack in reverse order, the new library version is likely to
7455 interoperate with programs that have been compiled with the old
7456 pem_password_cb definition (PEM_whatever takes some data that
7457 happens to be on the stack as its last argument, and the callback
7458 just ignores this garbage); but there is no guarantee whatsoever that
7461 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
7462 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
7463 problems not only on Windows, but also on some Unix platforms.
7464 To avoid problematic command lines, these definitions are now in an
7465 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
7466 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
7469 *) MIPS III/IV assembler module is reimplemented.
7472 *) More DES library cleanups: remove references to srand/rand and
7473 delete an unused file.
7476 *) Add support for the the free Netwide assembler (NASM) under Win32,
7477 since not many people have MASM (ml) and it can be hard to obtain.
7478 This is currently experimental but it seems to work OK and pass all
7479 the tests. Check out INSTALL.W32 for info.
7482 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
7483 without temporary keys kept an extra copy of the server key,
7484 and connections with temporary keys did not free everything in case
7488 *) New function RSA_check_key and new openssl rsa option -check
7489 for verifying the consistency of RSA keys.
7490 [Ulf Moeller, Bodo Moeller]
7492 *) Various changes to make Win32 compile work:
7493 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
7494 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
7495 comparison" warnings.
7496 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
7499 *) Add a debugging option to PKCS#5 v2 key generation function: when
7500 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
7501 derived keys are printed to stderr.
7504 *) Copy the flags in ASN1_STRING_dup().
7505 [Roman E. Pavlov <pre@mo.msk.ru>]
7507 *) The x509 application mishandled signing requests containing DSA
7508 keys when the signing key was also DSA and the parameters didn't match.
7510 It was supposed to omit the parameters when they matched the signing key:
7511 the verifying software was then supposed to automatically use the CA's
7512 parameters if they were absent from the end user certificate.
7514 Omitting parameters is no longer recommended. The test was also
7515 the wrong way round! This was probably due to unusual behaviour in
7516 EVP_cmp_parameters() which returns 1 if the parameters match.
7517 This meant that parameters were omitted when they *didn't* match and
7518 the certificate was useless. Certificates signed with 'ca' didn't have
7520 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
7522 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
7523 The interface is as follows:
7524 Applications can use
7525 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
7526 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
7527 "off" is now the default.
7528 The library internally uses
7529 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
7530 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
7531 to disable memory-checking temporarily.
7533 Some inconsistent states that previously were possible (and were
7534 even the default) are now avoided.
7536 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
7537 with each memory chunk allocated; this is occasionally more helpful
7538 than just having a counter.
7540 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7542 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7546 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7547 which largely parallels "options", but is for changing API behaviour,
7548 whereas "options" are about protocol behaviour.
7549 Initial "mode" flags are:
7551 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7552 a single record has been written.
7553 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7554 retries use the same buffer location.
7555 (But all of the contents must be
7559 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7562 *) Fix problems with no-hmac etc.
7563 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7565 *) New functions RSA_get_default_method(), RSA_set_method() and
7566 RSA_get_method(). These allows replacement of RSA_METHODs without having
7567 to mess around with the internals of an RSA structure.
7570 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7571 Also really enable memory leak checks in openssl.c and in some
7573 [Chad C. Mulligan, Bodo Moeller]
7575 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7576 up the length of negative integers. This has now been simplified to just
7577 store the length when it is first determined and use it later, rather
7578 than trying to keep track of where data is copied and updating it to
7580 [Steve Henson, reported by Brien Wheeler
7581 <bwheeler@authentica-security.com>]
7583 *) Add a new function PKCS7_signatureVerify. This allows the verification
7584 of a PKCS#7 signature but with the signing certificate passed to the
7585 function itself. This contrasts with PKCS7_dataVerify which assumes the
7586 certificate is present in the PKCS#7 structure. This isn't always the
7587 case: certificates can be omitted from a PKCS#7 structure and be
7588 distributed by "out of band" means (such as a certificate database).
7591 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7592 function prototypes in pem.h, also change util/mkdef.pl to add the
7593 necessary function names.
7596 *) mk1mf.pl (used by Windows builds) did not properly read the
7597 options set by Configure in the top level Makefile, and Configure
7598 was not even able to write more than one option correctly.
7599 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7602 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7603 file to be loaded from a BIO or FILE pointer. The BIO version will
7604 for example allow memory BIOs to contain config info.
7607 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7608 Whoever hopes to achieve shared-library compatibility across versions
7609 must use this, not the compile-time macro.
7610 (Exercise 0.9.4: Which is the minimum library version required by
7612 Note: All this applies only to multi-threaded programs, others don't
7616 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7617 through a BIO pair triggered the default case, i.e.
7618 SSLerr(...,SSL_R_UNKNOWN_STATE).
7621 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7622 can use the SSL library even if none of the specific BIOs is
7626 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7627 for the encoded length.
7628 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7630 *) Add initial documentation of the X509V3 functions.
7633 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7634 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7635 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7636 secure PKCS#8 private key format with a high iteration count.
7639 *) Fix determination of Perl interpreter: A perl or perl5
7640 _directory_ in $PATH was also accepted as the interpreter.
7641 [Ralf S. Engelschall]
7643 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7644 wrong with it but it was very old and did things like calling
7645 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7649 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7650 to use the new extension code.
7653 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7654 with macros. This should make it easier to change their form, add extra
7655 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7659 *) Add to configuration table a new entry that can specify an alternative
7660 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7661 according to Mark Crispin <MRC@Panda.COM>.
7665 *) DES CBC did not update the IV. Weird.
7668 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7669 Changing the behaviour of the former might break existing programs --
7670 where IV updating is needed, des_ncbc_encrypt can be used.
7673 *) When bntest is run from "make test" it drives bc to check its
7674 calculations, as well as internally checking them. If an internal check
7675 fails, it needs to cause bc to give a non-zero result or make test carries
7676 on without noticing the failure. Fixed.
7679 *) DES library cleanups.
7682 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7683 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7684 ciphers. NOTE: although the key derivation function has been verified
7685 against some published test vectors it has not been extensively tested
7686 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7690 *) Instead of "mkdir -p", which is not fully portable, use new
7691 Perl script "util/mkdir-p.pl".
7694 *) Rewrite the way password based encryption (PBE) is handled. It used to
7695 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7696 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7697 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7698 the 'parameter' field of the AlgorithmIdentifier is passed to the
7699 underlying key generation function so it must do its own ASN1 parsing.
7700 This has also changed the EVP_PBE_CipherInit() function which now has a
7701 'parameter' argument instead of literal salt and iteration count values
7702 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7705 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7706 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7707 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7708 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7709 value was just used as a "magic string" and not used directly its
7710 value doesn't matter.
7713 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7717 *) "linux-sparc64" configuration (ultrapenguin).
7718 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7719 "linux-sparc" configuration.
7720 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7722 *) config now generates no-xxx options for missing ciphers.
7725 *) Support the EBCDIC character set (work in progress).
7726 File ebcdic.c not yet included because it has a different license.
7727 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7729 *) Support BS2000/OSD-POSIX.
7730 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7732 *) Make callbacks for key generation use void * instead of char *.
7735 *) Make S/MIME samples compile (not yet tested).
7738 *) Additional typesafe stacks.
7741 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7745 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7747 *) New configuration variant "sco5-gcc".
7749 *) Updated some demos.
7750 [Sean O Riordain, Wade Scholine]
7752 *) Add missing BIO_free at exit of pkcs12 application.
7755 *) Fix memory leak in conf.c.
7758 *) Updates for Win32 to assembler version of MD5.
7761 *) Set #! path to perl in apps/der_chop to where we found it
7762 instead of using a fixed path.
7765 *) SHA library changes for irix64-mips4-cc.
7768 *) Improvements for VMS support.
7772 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7774 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7775 This also avoids the problems with SC4.2 and unpatched SC5.
7776 [Andy Polyakov <appro@fy.chalmers.se>]
7778 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7779 These are required because of the typesafe stack would otherwise break
7780 existing code. If old code used a structure member which used to be STACK
7781 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7782 sk_num or sk_value it would produce an error because the num, data members
7783 are not present in STACK_OF. Now it just produces a warning. sk_set
7784 replaces the old method of assigning a value to sk_value
7785 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7786 that does this will no longer work (and should use sk_set instead) but
7787 this could be regarded as a "questionable" behaviour anyway.
7790 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7791 correctly handle encrypted S/MIME data.
7794 *) Change type of various DES function arguments from des_cblock
7795 (which means, in function argument declarations, pointer to char)
7796 to des_cblock * (meaning pointer to array with 8 char elements),
7797 which allows the compiler to do more typechecking; it was like
7798 that back in SSLeay, but with lots of ugly casts.
7800 Introduce new type const_des_cblock.
7803 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7804 problems: find RecipientInfo structure that matches recipient certificate
7805 and initialise the ASN1 structures properly based on passed cipher.
7808 *) Belatedly make the BN tests actually check the results.
7811 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7812 to and from BNs: it was completely broken. New compilation option
7813 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7814 key elements as negative integers.
7817 *) Reorganize and speed up MD5.
7818 [Andy Polyakov <appro@fy.chalmers.se>]
7821 [Richard Levitte <richard@levitte.org>]
7823 *) New option -out to asn1parse to allow the parsed structure to be
7824 output to a file. This is most useful when combined with the -strparse
7825 option to examine the output of things like OCTET STRINGS.
7828 *) Make SSL library a little more fool-proof by not requiring any longer
7829 that SSL_set_{accept,connect}_state be called before
7830 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7831 in many applications because usually everything *appeared* to work as
7832 intended anyway -- now it really works as intended).
7835 *) Move openssl.cnf out of lib/.
7838 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7839 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7840 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7841 [Ralf S. Engelschall]
7843 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7844 handle PKCS#7 enveloped data properly.
7845 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7847 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7848 copying pointers. The cert_st handling is changed by this in
7849 various ways (and thus what used to be known as ctx->default_cert
7850 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7851 any longer when s->cert does not give us what we need).
7852 ssl_cert_instantiate becomes obsolete by this change.
7853 As soon as we've got the new code right (possibly it already is?),
7854 we have solved a couple of bugs of the earlier code where s->cert
7855 was used as if it could not have been shared with other SSL structures.
7857 Note that using the SSL API in certain dirty ways now will result
7858 in different behaviour than observed with earlier library versions:
7859 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7860 does not influence s as it used to.
7862 In order to clean up things more thoroughly, inside SSL_SESSION
7863 we don't use CERT any longer, but a new structure SESS_CERT
7864 that holds per-session data (if available); currently, this is
7865 the peer's certificate chain and, for clients, the server's certificate
7866 and temporary key. CERT holds only those values that can have
7867 meaningful defaults in an SSL_CTX.
7870 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7871 from the internal representation. Various PKCS#7 fixes: remove some
7872 evil casts and set the enc_dig_alg field properly based on the signing
7876 *) Allow PKCS#12 password to be set from the command line or the
7877 environment. Let 'ca' get its config file name from the environment
7878 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7882 *) Allow certificate policies extension to use an IA5STRING for the
7883 organization field. This is contrary to the PKIX definition but
7884 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7888 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7889 without disallowing inline assembler and the like for non-pedantic builds.
7892 *) Support Borland C++ builder.
7893 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7898 *) SHA-1 cleanups and performance enhancements.
7899 [Andy Polyakov <appro@fy.chalmers.se>]
7901 *) Sparc v8plus assembler for the bignum library.
7902 [Andy Polyakov <appro@fy.chalmers.se>]
7904 *) Accept any -xxx and +xxx compiler options in Configure.
7907 *) Update HPUX configuration.
7910 *) Add missing sk_<type>_unshift() function to safestack.h
7911 [Ralf S. Engelschall]
7913 *) New function SSL_CTX_use_certificate_chain_file that sets the
7914 "extra_cert"s in addition to the certificate. (This makes sense
7915 only for "PEM" format files, as chains as a whole are not
7919 *) Support verify_depth from the SSL API.
7920 x509_vfy.c had what can be considered an off-by-one-error:
7921 Its depth (which was not part of the external interface)
7922 was actually counting the number of certificates in a chain;
7923 now it really counts the depth.
7926 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7927 instead of X509err, which often resulted in confusing error
7928 messages since the error codes are not globally unique
7929 (e.g. an alleged error in ssl3_accept when a certificate
7930 didn't match the private key).
7932 *) New function SSL_CTX_set_session_id_context that allows to set a default
7933 value (so that you don't need SSL_set_session_id_context for each
7934 connection using the SSL_CTX).
7937 *) OAEP decoding bug fix.
7940 *) Support INSTALL_PREFIX for package builders, as proposed by
7944 *) New Configure options "threads" and "no-threads". For systems
7945 where the proper compiler options are known (currently Solaris
7946 and Linux), "threads" is the default.
7949 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7952 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7953 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7954 such as /usr/local/bin.
7957 *) "make linux-shared" to build shared libraries.
7958 [Niels Poppe <niels@netbox.org>]
7960 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7963 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7964 extension adding in x509 utility.
7967 *) Remove NOPROTO sections and error code comments.
7970 *) Partial rewrite of the DEF file generator to now parse the ANSI
7974 *) New Configure options --prefix=DIR and --openssldir=DIR.
7977 *) Complete rewrite of the error code script(s). It is all now handled
7978 by one script at the top level which handles error code gathering,
7979 header rewriting and C source file generation. It should be much better
7980 than the old method: it now uses a modified version of Ulf's parser to
7981 read the ANSI prototypes in all header files (thus the old K&R definitions
7982 aren't needed for error creation any more) and do a better job of
7983 translating function codes into names. The old 'ASN1 error code imbedded
7984 in a comment' is no longer necessary and it doesn't use .err files which
7985 have now been deleted. Also the error code call doesn't have to appear all
7986 on one line (which resulted in some large lines...).
7989 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7992 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7993 0 (which usually indicates a closed connection), but continue reading.
7996 *) Fix some race conditions.
7999 *) Add support for CRL distribution points extension. Add Certificate
8000 Policies and CRL distribution points documentation.
8003 *) Move the autogenerated header file parts to crypto/opensslconf.h.
8006 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
8007 8 of keying material. Merlin has also confirmed interop with this fix
8008 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
8009 [Merlin Hughes <merlin@baltimore.ie>]
8011 *) Fix lots of warnings.
8012 [Richard Levitte <levitte@stacken.kth.se>]
8014 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8015 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8016 [Richard Levitte <levitte@stacken.kth.se>]
8018 *) Fix problems with sizeof(long) == 8.
8019 [Andy Polyakov <appro@fy.chalmers.se>]
8021 *) Change functions to ANSI C.
8024 *) Fix typos in error codes.
8025 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8027 *) Remove defunct assembler files from Configure.
8030 *) SPARC v8 assembler BIGNUM implementation.
8031 [Andy Polyakov <appro@fy.chalmers.se>]
8033 *) Support for Certificate Policies extension: both print and set.
8034 Various additions to support the r2i method this uses.
8037 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8038 return a const string when you are expecting an allocated buffer.
8041 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8042 types DirectoryString and DisplayText.
8045 *) Add code to allow r2i extensions to access the configuration database,
8046 add an LHASH database driver and add several ctx helper functions.
8049 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8050 fail when they extended the size of a BIGNUM.
8053 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8054 support typesafe stack.
8057 *) Fix typo in SSL_[gs]et_options().
8058 [Nils Frostberg <nils@medcom.se>]
8060 *) Delete various functions and files that belonged to the (now obsolete)
8061 old X509V3 handling code.
8064 *) New Configure option "rsaref".
8067 *) Don't auto-generate pem.h.
8070 *) Introduce type-safe ASN.1 SETs.
8073 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8074 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8076 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8077 that links with OpenSSL (well at least cause lots of warnings), but fear
8078 not: the conversion is trivial, and it eliminates loads of evil casts. A
8079 few STACKed things have been converted already. Feel free to convert more.
8080 In the fullness of time, I'll do away with the STACK type altogether.
8083 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8084 specified in <certfile> by updating the entry in the index.txt file.
8085 This way one no longer has to edit the index.txt file manually for
8086 revoking a certificate. The -revoke option does the gory details now.
8087 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8089 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8090 `-text' option at all and this way the `-noout -text' combination was
8091 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8092 [Ralf S. Engelschall]
8094 *) Make sure a corresponding plain text error message exists for the
8095 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8096 verify callback function determined that a certificate was revoked.
8097 [Ralf S. Engelschall]
8099 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8100 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8101 all available cipers including rc5, which was forgotten until now.
8102 In order to let the testing shell script know which algorithms
8103 are available, a new (up to now undocumented) command
8104 "openssl list-cipher-commands" is used.
8107 *) Bugfix: s_client occasionally would sleep in select() when
8108 it should have checked SSL_pending() first.
8111 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8112 the raw DSA values prior to ASN.1 encoding.
8115 *) Tweaks to Configure
8116 [Niels Poppe <niels@netbox.org>]
8118 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8122 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8125 *) New config option to avoid instructions that are illegal on the 80386.
8126 The default code is faster, but requires at least a 486.
8129 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8130 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8131 same as SSL2_VERSION anyway.
8134 *) New "-showcerts" option for s_client.
8137 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8138 application. Various cleanups and fixes.
8141 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8142 modify error routines to work internally. Add error codes and PBE init
8143 to library startup routines.
8146 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8147 packing functions to asn1 and evp. Changed function names and error
8148 codes along the way.
8151 *) PKCS12 integration: and so it begins... First of several patches to
8152 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8153 objects to objects.h
8156 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8157 and display support for Thawte strong extranet extension.
8160 *) Add LinuxPPC support.
8161 [Jeff Dubrule <igor@pobox.org>]
8163 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8164 bn_div_words in alpha.s.
8165 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8167 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8168 OAEP isn't supported when OpenSSL is built with RSAref.
8169 [Ulf Moeller <ulf@fitug.de>]
8171 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8172 so they no longer are missing under -DNOPROTO.
8173 [Soren S. Jorvang <soren@t.dk>]
8176 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8178 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8179 doesn't work when the session is reused. Coming soon!
8182 *) Fix a security hole, that allows sessions to be reused in the wrong
8183 context thus bypassing client cert protection! All software that uses
8184 client certs and session caches in multiple contexts NEEDS PATCHING to
8185 allow session reuse! A fuller solution is in the works.
8186 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8188 *) Some more source tree cleanups (removed obsolete files
8189 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8190 permission on "config" script to be executable) and a fix for the INSTALL
8192 [Ulf Moeller <ulf@fitug.de>]
8194 *) Remove some legacy and erroneous uses of malloc, free instead of
8196 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8198 *) Make rsa_oaep_test return non-zero on error.
8199 [Ulf Moeller <ulf@fitug.de>]
8201 *) Add support for native Solaris shared libraries. Configure
8202 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8203 if someone would make that last step automatic.
8204 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8206 *) ctx_size was not built with the right compiler during "make links". Fixed.
8209 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8210 except NULL ciphers". This means the default cipher list will no longer
8211 enable NULL ciphers. They need to be specifically enabled e.g. with
8212 the string "DEFAULT:eNULL".
8215 *) Fix to RSA private encryption routines: if p < q then it would
8216 occasionally produce an invalid result. This will only happen with
8217 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8220 *) Be less restrictive and allow also `perl util/perlpath.pl
8221 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8222 because this way one can also use an interpreter named `perl5' (which is
8223 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8224 installed as `perl').
8225 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8227 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8228 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8230 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8231 advapi32.lib to Win32 build and change the pem test comparision
8232 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8233 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8234 and crypto/des/ede_cbcm_enc.c.
8237 *) DES quad checksum was broken on big-endian architectures. Fixed.
8240 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8241 Win32 test batch file so it (might) work again. The Win32 test batch file
8242 is horrible: I feel ill....
8245 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8246 in e_os.h. Audit of header files to check ANSI and non ANSI
8247 sections: 10 functions were absent from non ANSI section and not exported
8248 from Windows DLLs. Fixed up libeay.num for new functions.
8251 *) Make `openssl version' output lines consistent.
8252 [Ralf S. Engelschall]
8254 *) Fix Win32 symbol export lists for BIO functions: Added
8255 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8256 to ms/libeay{16,32}.def.
8257 [Ralf S. Engelschall]
8259 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8260 fine under Unix and passes some trivial tests I've now added. But the
8261 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8262 added to make sure no one expects that this stuff really works in the
8263 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8264 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8266 [Ralf S. Engelschall]
8268 *) Fix the generation of two part addresses in perl.
8269 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8271 *) Add config entry for Linux on MIPS.
8272 [John Tobey <jtobey@channel1.com>]
8274 *) Make links whenever Configure is run, unless we are on Windoze.
8277 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8278 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8282 *) Add a useful kludge to allow package maintainers to specify compiler and
8283 other platforms details on the command line without having to patch the
8284 Configure script everytime: One now can use ``perl Configure
8285 <id>:<details>'', i.e. platform ids are allowed to have details appended
8286 to them (seperated by colons). This is treated as there would be a static
8287 pre-configured entry in Configure's %table under key <id> with value
8288 <details> and ``perl Configure <id>'' is called. So, when you want to
8289 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8290 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8291 now, which overrides the FreeBSD-elf entry on-the-fly.
8292 [Ralf S. Engelschall]
8294 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8297 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8298 on the `perl Configure ...' command line. This way one can compile
8299 OpenSSL libraries with Position Independent Code (PIC) which is needed
8300 for linking it into DSOs.
8301 [Ralf S. Engelschall]
8303 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8307 *) Cleaned up the LICENSE document: The official contact for any license
8308 questions now is the OpenSSL core team under openssl-core@openssl.org.
8309 And add a paragraph about the dual-license situation to make sure people
8310 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8311 to the OpenSSL toolkit.
8312 [Ralf S. Engelschall]
8314 *) General source tree makefile cleanups: Made `making xxx in yyy...'
8315 display consistent in the source tree and replaced `/bin/rm' by `rm'.
8316 Additonally cleaned up the `make links' target: Remove unnecessary
8317 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
8318 to speed processing and no longer clutter the display with confusing
8319 stuff. Instead only the actually done links are displayed.
8320 [Ralf S. Engelschall]
8322 *) Permit null encryption ciphersuites, used for authentication only. It used
8323 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
8324 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
8328 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
8329 signed attributes when verifying signatures (this would break them),
8330 the detached data encoding was wrong and public keys obtained using
8331 X509_get_pubkey() weren't freed.
8334 *) Add text documentation for the BUFFER functions. Also added a work around
8335 to a Win95 console bug. This was triggered by the password read stuff: the
8336 last character typed gets carried over to the next fread(). If you were
8337 generating a new cert request using 'req' for example then the last
8338 character of the passphrase would be CR which would then enter the first
8342 *) Added the new `Includes OpenSSL Cryptography Software' button as
8343 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
8344 button and can be used by applications based on OpenSSL to show the
8345 relationship to the OpenSSL project.
8346 [Ralf S. Engelschall]
8348 *) Remove confusing variables in function signatures in files
8349 ssl/ssl_lib.c and ssl/ssl.h.
8350 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8352 *) Don't install bss_file.c under PREFIX/include/
8353 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8355 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
8356 functions that return function pointers and has support for NT specific
8357 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
8358 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
8359 unsigned to signed types: this was killing the Win32 compile.
8362 *) Add new certificate file to stack functions,
8363 SSL_add_dir_cert_subjects_to_stack() and
8364 SSL_add_file_cert_subjects_to_stack(). These largely supplant
8365 SSL_load_client_CA_file(), and can be used to add multiple certs easily
8366 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
8367 This means that Apache-SSL and similar packages don't have to mess around
8368 to add as many CAs as they want to the preferred list.
8371 *) Experiment with doxygen documentation. Currently only partially applied to
8373 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
8374 openssl.doxy as the configuration file.
8377 *) Get rid of remaining C++-style comments which strict C compilers hate.
8378 [Ralf S. Engelschall, pointed out by Carlos Amengual]
8380 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
8381 compiled in by default: it has problems with large keys.
8384 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
8385 DH private keys and/or callback functions which directly correspond to
8386 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
8387 is needed for applications which have to configure certificates on a
8388 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
8390 For the RSA certificate situation is makes no difference, but
8391 for the DSA certificate situation this fixes the "no shared cipher"
8392 problem where the OpenSSL cipher selection procedure failed because the
8393 temporary keys were not overtaken from the context and the API provided
8394 no way to reconfigure them.
8395 The new functions now let applications reconfigure the stuff and they
8396 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
8397 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
8398 non-public-API function ssl_cert_instantiate() is used as a helper
8399 function and also to reduce code redundancy inside ssl_rsa.c.
8400 [Ralf S. Engelschall]
8402 *) Move s_server -dcert and -dkey options out of the undocumented feature
8403 area because they are useful for the DSA situation and should be
8404 recognized by the users.
8405 [Ralf S. Engelschall]
8407 *) Fix the cipher decision scheme for export ciphers: the export bits are
8408 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
8409 SSL_EXP_MASK. So, the original variable has to be used instead of the
8410 already masked variable.
8411 [Richard Levitte <levitte@stacken.kth.se>]
8413 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
8414 [Richard Levitte <levitte@stacken.kth.se>]
8416 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
8417 from `int' to `unsigned int' because it's a length and initialized by
8418 EVP_DigestFinal() which expects an `unsigned int *'.
8419 [Richard Levitte <levitte@stacken.kth.se>]
8421 *) Don't hard-code path to Perl interpreter on shebang line of Configure
8422 script. Instead use the usual Shell->Perl transition trick.
8423 [Ralf S. Engelschall]
8425 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
8426 (in addition to RSA certificates) to match the behaviour of `openssl dsa
8427 -noout -modulus' as it's already the case for `openssl rsa -noout
8428 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
8429 currently the public key is printed (a decision which was already done by
8430 `openssl dsa -modulus' in the past) which serves a similar purpose.
8431 Additionally the NO_RSA no longer completely removes the whole -modulus
8432 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
8434 [Ralf S. Engelschall]
8436 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
8437 BIO. See the source (crypto/evp/bio_ok.c) for more info.
8438 [Arne Ansper <arne@ats.cyber.ee>]
8440 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
8441 to be added. Now both 'req' and 'ca' can use new objects defined in the
8445 *) Add cool BIO that does syslog (or event log on NT).
8446 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
8448 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
8449 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
8450 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
8451 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
8454 *) Add preliminary config info for new extension code.
8457 *) Make RSA_NO_PADDING really use no padding.
8458 [Ulf Moeller <ulf@fitug.de>]
8460 *) Generate errors when private/public key check is done.
8463 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
8464 for some CRL extensions and new objects added.
8467 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
8468 key usage extension and fuller support for authority key id.
8471 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
8472 padding method for RSA, which is recommended for new applications in PKCS
8473 #1 v2.0 (RFC 2437, October 1998).
8474 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
8475 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
8476 against Bleichbacher's attack on RSA.
8477 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
8480 *) Updates to the new SSL compression code
8481 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8483 *) Fix so that the version number in the master secret, when passed
8484 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
8485 (because the server will not accept higher), that the version number
8486 is 0x03,0x01, not 0x03,0x00
8487 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8489 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
8490 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
8491 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
8494 *) Support for RAW extensions where an arbitrary extension can be
8495 created by including its DER encoding. See apps/openssl.cnf for
8499 *) Make sure latest Perl versions don't interpret some generated C array
8500 code as Perl array code in the crypto/err/err_genc.pl script.
8501 [Lars Weber <3weber@informatik.uni-hamburg.de>]
8503 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
8504 not many people have the assembler. Various Win32 compilation fixes and
8505 update to the INSTALL.W32 file with (hopefully) more accurate Win32
8509 *) Modify configure script 'Configure' to automatically create crypto/date.h
8510 file under Win32 and also build pem.h from pem.org. New script
8511 util/mkfiles.pl to create the MINFO file on environments that can't do a
8512 'make files': perl util/mkfiles.pl >MINFO should work.
8515 *) Major rework of DES function declarations, in the pursuit of correctness
8516 and purity. As a result, many evil casts evaporated, and some weirdness,
8517 too. You may find this causes warnings in your code. Zapping your evil
8518 casts will probably fix them. Mostly.
8521 *) Fix for a typo in asn1.h. Bug fix to object creation script
8522 obj_dat.pl. It considered a zero in an object definition to mean
8523 "end of object": none of the objects in objects.h have any zeros
8524 so it wasn't spotted.
8525 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
8527 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
8528 Masking (CBCM). In the absence of test vectors, the best I have been able
8529 to do is check that the decrypt undoes the encrypt, so far. Send me test
8530 vectors if you have them.
8533 *) Correct calculation of key length for export ciphers (too much space was
8534 allocated for null ciphers). This has not been tested!
8537 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
8538 message is now correct (it understands "crypto" and "ssl" on its
8539 command line). There is also now an "update" option. This will update
8540 the util/ssleay.num and util/libeay.num files with any new functions.
8542 perl util/mkdef.pl crypto ssl update
8543 it will update them.
8546 *) Overhauled the Perl interface (perl/*):
8547 - ported BN stuff to OpenSSL's different BN library
8548 - made the perl/ source tree CVS-aware
8549 - renamed the package from SSLeay to OpenSSL (the files still contain
8550 their history because I've copied them in the repository)
8551 - removed obsolete files (the test scripts will be replaced
8552 by better Test::Harness variants in the future)
8553 [Ralf S. Engelschall]
8555 *) First cut for a very conservative source tree cleanup:
8556 1. merge various obsolete readme texts into doc/ssleay.txt
8557 where we collect the old documents and readme texts.
8558 2. remove the first part of files where I'm already sure that we no
8559 longer need them because of three reasons: either they are just temporary
8560 files which were left by Eric or they are preserved original files where
8561 I've verified that the diff is also available in the CVS via "cvs diff
8562 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8563 the crypto/md/ stuff).
8564 [Ralf S. Engelschall]
8566 *) More extension code. Incomplete support for subject and issuer alt
8567 name, issuer and authority key id. Change the i2v function parameters
8568 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8569 what that's for :-) Fix to ASN1 macro which messed up
8570 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8573 *) Preliminary support for ENUMERATED type. This is largely copied from the
8577 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8578 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8580 *) Make sure `make rehash' target really finds the `openssl' program.
8581 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8583 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8584 like to hear about it if this slows down other processors.
8587 *) Add CygWin32 platform information to Configure script.
8588 [Alan Batie <batie@aahz.jf.intel.com>]
8590 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8591 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8593 *) New program nseq to manipulate netscape certificate sequences
8596 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8600 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8601 but the BN code had some problems that would cause failures when
8602 doing certificate verification and some other functions.
8603 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8605 *) Add ASN1 and PEM code to support netscape certificate sequences.
8608 *) Add ASN1 and PEM code to support netscape certificate sequences.
8611 *) Add several PKIX and private extended key usage OIDs.
8614 *) Modify the 'ca' program to handle the new extension code. Modify
8615 openssl.cnf for new extension format, add comments.
8618 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8619 and add a sample to openssl.cnf so req -x509 now adds appropriate
8623 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8624 error code, add initial support to X509_print() and x509 application.
8627 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8628 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8629 stuff is currently isolated and isn't even compiled yet.
8632 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8633 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8634 Removed the versions check from X509 routines when loading extensions:
8635 this allows certain broken certificates that don't set the version
8636 properly to be processed.
8639 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8640 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8641 can still be regenerated with "make depend".
8644 *) Spelling mistake in C version of CAST-128.
8645 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8647 *) Changes to the error generation code. The perl script err-code.pl
8648 now reads in the old error codes and retains the old numbers, only
8649 adding new ones if necessary. It also only changes the .err files if new
8650 codes are added. The makefiles have been modified to only insert errors
8651 when needed (to avoid needlessly modifying header files). This is done
8652 by only inserting errors if the .err file is newer than the auto generated
8653 C file. To rebuild all the error codes from scratch (the old behaviour)
8654 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8655 or delete all the .err files.
8658 *) CAST-128 was incorrectly implemented for short keys. The C version has
8659 been fixed, but is untested. The assembler versions are also fixed, but
8660 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8661 to regenerate it if needed.
8662 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8663 Hagino <itojun@kame.net>]
8665 *) File was opened incorrectly in randfile.c.
8666 [Ulf Möller <ulf@fitug.de>]
8668 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8669 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8670 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8671 al: it's just almost always a UTCTime. Note this patch adds new error
8672 codes so do a "make errors" if there are problems.
8675 *) Correct Linux 1 recognition in config.
8676 [Ulf Möller <ulf@fitug.de>]
8678 *) Remove pointless MD5 hash when using DSA keys in ca.
8679 [Anonymous <nobody@replay.com>]
8681 *) Generate an error if given an empty string as a cert directory. Also
8682 generate an error if handed NULL (previously returned 0 to indicate an
8683 error, but didn't set one).
8684 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8686 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8689 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8690 parameters. This was causing a warning which killed off the Win32 compile.
8693 *) Remove C++ style comments from crypto/bn/bn_local.h.
8694 [Neil Costigan <neil.costigan@celocom.com>]
8696 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8697 based on a text string, looking up short and long names and finally
8698 "dot" format. The "dot" format stuff didn't work. Added new function
8699 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8700 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8701 OID is not part of the table.
8704 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8705 X509_LOOKUP_by_alias().
8708 *) Sort openssl functions by name.
8711 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8712 encryption from sample DSA keys (in case anyone is interested the password
8716 *) Make _all_ *_free functions accept a NULL pointer.
8717 [Frans Heymans <fheymans@isaserver.be>]
8719 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8721 [Anonymous <nobody@replay.com>]
8723 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8724 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8726 *) Don't blow it for numeric -newkey arguments to apps/req.
8727 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8729 *) Temp key "for export" tests were wrong in s3_srvr.c.
8730 [Anonymous <nobody@replay.com>]
8732 *) Add prototype for temp key callback functions
8733 SSL_CTX_set_tmp_{rsa,dh}_callback().
8736 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8737 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8740 *) X509_name_add_entry() freed the wrong thing after an error.
8741 [Arne Ansper <arne@ats.cyber.ee>]
8743 *) rsa_eay.c would attempt to free a NULL context.
8744 [Arne Ansper <arne@ats.cyber.ee>]
8746 *) BIO_s_socket() had a broken should_retry() on Windoze.
8747 [Arne Ansper <arne@ats.cyber.ee>]
8749 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8750 [Arne Ansper <arne@ats.cyber.ee>]
8752 *) Make sure the already existing X509_STORE->depth variable is initialized
8753 in X509_STORE_new(), but document the fact that this variable is still
8754 unused in the certificate verification process.
8755 [Ralf S. Engelschall]
8757 *) Fix the various library and apps files to free up pkeys obtained from
8758 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8761 *) Fix reference counting in X509_PUBKEY_get(). This makes
8762 demos/maurice/example2.c work, amongst others, probably.
8763 [Steve Henson and Ben Laurie]
8765 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8766 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8767 are no longer created. This way we have a single and consistent command
8768 line interface `openssl <command>', similar to `cvs <command>'.
8769 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8771 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8772 BIT STRING wrapper always have zero unused bits.
8775 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8778 *) Make the top-level INSTALL documentation easier to understand.
8781 *) Makefiles updated to exit if an error occurs in a sub-directory
8782 make (including if user presses ^C) [Paul Sutton]
8784 *) Make Montgomery context stuff explicit in RSA data structure.
8787 *) Fix build order of pem and err to allow for generated pem.h.
8790 *) Fix renumbering bug in X509_NAME_delete_entry().
8793 *) Enhanced the err-ins.pl script so it makes the error library number
8794 global and can add a library name. This is needed for external ASN1 and
8795 other error libraries.
8798 *) Fixed sk_insert which never worked properly.
8801 *) Fix ASN1 macros so they can handle indefinite length construted
8802 EXPLICIT tags. Some non standard certificates use these: they can now
8806 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8807 into a single doc/ssleay.txt bundle. This way the information is still
8808 preserved but no longer messes up this directory. Now it's new room for
8809 the new set of documenation files.
8810 [Ralf S. Engelschall]
8812 *) SETs were incorrectly DER encoded. This was a major pain, because they
8813 shared code with SEQUENCEs, which aren't coded the same. This means that
8814 almost everything to do with SETs or SEQUENCEs has either changed name or
8815 number of arguments.
8816 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8818 *) Fix test data to work with the above.
8821 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8822 was already fixed by Eric for 0.9.1 it seems.
8823 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8825 *) Autodetect FreeBSD3.
8828 *) Fix various bugs in Configure. This affects the following platforms:
8832 unixware-2.0-pentium
8836 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8837 before they are needed.
8840 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8844 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8846 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8847 changed SSLeay to OpenSSL in version strings.
8848 [Ralf S. Engelschall]
8850 *) Some fixups to the top-level documents.
8853 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8854 because the symlink to include/ was missing.
8855 [Ralf S. Engelschall]
8857 *) Incorporated the popular no-RSA/DSA-only patches
8858 which allow to compile a RSA-free SSLeay.
8859 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8861 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8862 when "ssleay" is still not found.
8863 [Ralf S. Engelschall]
8865 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8866 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8868 *) Updated the README file.
8869 [Ralf S. Engelschall]
8871 *) Added various .cvsignore files in the CVS repository subdirs
8872 to make a "cvs update" really silent.
8873 [Ralf S. Engelschall]
8875 *) Recompiled the error-definition header files and added
8876 missing symbols to the Win32 linker tables.
8877 [Ralf S. Engelschall]
8879 *) Cleaned up the top-level documents;
8880 o new files: CHANGES and LICENSE
8881 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8882 o merged COPYRIGHT into LICENSE
8883 o removed obsolete TODO file
8884 o renamed MICROSOFT to INSTALL.W32
8885 [Ralf S. Engelschall]
8887 *) Removed dummy files from the 0.9.1b source tree:
8888 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8889 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8890 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8891 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8892 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8893 [Ralf S. Engelschall]
8895 *) Added various platform portability fixes.
8898 *) The Genesis of the OpenSSL rpject:
8899 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8900 Young and Tim J. Hudson created while they were working for C2Net until
8902 [The OpenSSL Project]
8905 Changes between 0.9.0b and 0.9.1b [not released]
8907 *) Updated a few CA certificates under certs/
8910 *) Changed some BIGNUM api stuff.
8913 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8914 DGUX x86, Linux Alpha, etc.
8917 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8918 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8922 *) Add -strparse option to asn1pars program which parses nested
8924 [Dr Stephen Henson <shenson@bigfoot.com>]
8926 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8929 *) DSA fix for "ca" program.
8932 *) Added "-genkey" option to "dsaparam" program.
8935 *) Added RIPE MD160 (rmd160) message digest.
8938 *) Added -a (all) option to "ssleay version" command.
8941 *) Added PLATFORM define which is the id given to Configure.
8944 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8947 *) Extended the ASN.1 parser routines.
8950 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8953 *) Added a BN_CTX to the BN library.
8956 *) Fixed the weak key values in DES library
8959 *) Changed API in EVP library for cipher aliases.
8962 *) Added support for RC2/64bit cipher.
8965 *) Converted the lhash library to the crypto/mem.c functions.
8968 *) Added more recognized ASN.1 object ids.
8971 *) Added more RSA padding checks for SSL/TLS.
8974 *) Added BIO proxy/filter functionality.
8977 *) Added extra_certs to SSL_CTX which can be used
8978 send extra CA certificates to the client in the CA cert chain sending
8979 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8982 *) Now Fortezza is denied in the authentication phase because
8983 this is key exchange mechanism is not supported by SSLeay at all.
8986 *) Additional PKCS1 checks.
8989 *) Support the string "TLSv1" for all TLS v1 ciphers.
8992 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8993 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8996 *) Fixed a few memory leaks.
8999 *) Fixed various code and comment typos.
9002 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
9003 bytes sent in the client random.
9004 [Edward Bishop <ebishop@spyglass.com>]