5 Changes between 0.9.8k and 1.0 [xx XXX xxxx]
7 *) Alter match criteria in PKCS12_parse(). It used to try to use local
8 key ids to find matching certificates and keys but some PKCS#12 files
9 don't follow the (somewhat unwritten) rules and this strategy fails.
10 Now just gather all certificates together and the first private key
11 then look for the first certificate that matches the key.
14 *) Support use of registered digest and cipher names for dgst and cipher
15 commands instead of having to add each one as a special case. So now
22 openssl dgst -sha256 foo
24 and this works for ENGINE based algorithms too.
28 *) Update Gost ENGINE to support parameter files.
29 [Victor B. Wagner <vitus@cryptocom.ru>]
31 *) Support GeneralizedTime in ca utility.
32 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
34 *) Enhance the hash format used for certificate directory links. The new
35 form uses the canonical encoding (meaning equivalent names will work
36 even if they aren't identical) and uses SHA1 instead of MD5. This form
37 is incompatible with the older format and as a result c_rehash should
38 be used to rebuild symbolic links.
41 *) Make PKCS#8 the default write format for private keys, replacing the
42 traditional format. This form is standardised, more secure and doesn't
43 include an implicit MD5 dependency.
46 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
47 committed to OpenSSL should pass this lot as a minimum.
50 *) Add session ticket override functionality for use by EAP-FAST.
51 [Jouni Malinen <j@w1.fi>]
53 *) Modify HMAC functions to return a value. Since these can be implemented
54 in an ENGINE errors can occur.
57 *) Type-checked OBJ_bsearch_ex.
60 *) Type-checked OBJ_bsearch. Also some constification necessitated
61 by type-checking. Still to come: TXT_DB, bsearch(?),
62 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
66 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
67 seconds to a tm structure directly, instead of going through OS
68 specific date routines. This avoids any issues with OS routines such
69 as the year 2038 bug. New *_adj() functions for ASN1 time structures
70 and X509_time_adj_ex() to cover the extended range. The existing
71 X509_time_adj() is still usable and will no longer have any date issues.
74 *) Delta CRL support. New use deltas option which will attempt to locate
75 and search any appropriate delta CRLs available.
77 This work was sponsored by Google.
80 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
81 code and add additional score elements. Validate alternate CRL paths
82 as part of the CRL checking and indicate a new error "CRL path validation
83 error" in this case. Applications wanting additional details can use
84 the verify callback and check the new "parent" field. If this is not
85 NULL CRL path validation is taking place. Existing applications wont
86 see this because it requires extended CRL support which is off by
89 This work was sponsored by Google.
92 *) Support for freshest CRL extension.
94 This work was sponsored by Google.
97 *) Initial indirect CRL support. Currently only supported in the CRLs
98 passed directly and not via lookup. Process certificate issuer
99 CRL entry extension and lookup CRL entries by bother issuer name
100 and serial number. Check and process CRL issuer entry in IDP extension.
102 This work was sponsored by Google.
105 *) Add support for distinct certificate and CRL paths. The CRL issuer
106 certificate is validated separately in this case. Only enabled if
107 an extended CRL support flag is set: this flag will enable additional
108 CRL functionality in future.
110 This work was sponsored by Google.
113 *) Add support for policy mappings extension.
115 This work was sponsored by Google.
118 *) Fixes to pathlength constraint, self issued certificate handling,
119 policy processing to align with RFC3280 and PKITS tests.
121 This work was sponsored by Google.
124 *) Support for name constraints certificate extension. DN, email, DNS
125 and URI types are currently supported.
127 This work was sponsored by Google.
130 *) To cater for systems that provide a pointer-based thread ID rather
131 than numeric, deprecate the current numeric thread ID mechanism and
132 replace it with a structure and associated callback type. This
133 mechanism allows a numeric "hash" to be extracted from a thread ID in
134 either case, and on platforms where pointers are larger than 'long',
135 mixing is done to help ensure the numeric 'hash' is usable even if it
136 can't be guaranteed unique. The default mechanism is to use "&errno"
137 as a pointer-based thread ID to distinguish between threads.
139 Applications that want to provide their own thread IDs should now use
140 CRYPTO_THREADID_set_callback() to register a callback that will call
141 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
143 Note that ERR_remove_state() is now deprecated, because it is tied
144 to the assumption that thread IDs are numeric. ERR_remove_state(0)
145 to free the current thread's error state should be replaced by
146 ERR_remove_thread_state(NULL).
148 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
149 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
150 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
151 application was previously providing a numeric thread callback that
152 was inappropriate for distinguishing threads, then uniqueness might
153 have been obtained with &errno that happened immediately in the
154 intermediate development versions of OpenSSL; this is no longer the
155 case, the numeric thread callback will now override the automatic use
157 [Geoff Thorpe, with help from Bodo Moeller]
159 *) Initial support for different CRL issuing certificates. This covers a
160 simple case where the self issued certificates in the chain exist and
161 the real CRL issuer is higher in the existing chain.
163 This work was sponsored by Google.
166 *) Removed effectively defunct crypto/store from the build.
169 *) Revamp of STACK to provide stronger type-checking. Still to come:
170 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
171 ASN1_STRING, CONF_VALUE.
174 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
175 RAM on SSL connections. This option can save about 34k per idle SSL.
178 *) Revamp of LHASH to provide stronger type-checking. Still to come:
179 STACK, TXT_DB, bsearch, qsort.
182 *) Initial support for Cryptographic Message Syntax (aka CMS) based
183 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
184 support for data, signedData, compressedData, digestedData and
185 encryptedData, envelopedData types included. Scripts to check against
186 RFC4134 examples draft and interop and consistency checks of many
187 content types and variants.
190 *) Add options to enc utility to support use of zlib compression BIO.
193 *) Extend mk1mf to support importing of options and assembly language
194 files from Configure script, currently only included in VC-WIN32.
195 The assembly language rules can now optionally generate the source
196 files from the associated perl scripts.
199 *) Implement remaining functionality needed to support GOST ciphersuites.
200 Interop testing has been performed using CryptoPro implementations.
201 [Victor B. Wagner <vitus@cryptocom.ru>]
203 *) s390x assembler pack.
206 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
210 *) Implement Opaque PRF Input TLS extension as specified in
211 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
212 official specification yet and no extension type assignment by
213 IANA exists, this extension (for now) will have to be explicitly
214 enabled when building OpenSSL by providing the extension number
215 to use. For example, specify an option
217 -DTLSEXT_TYPE_opaque_prf_input=0x9527
219 to the "config" or "Configure" script to enable the extension,
220 assuming extension number 0x9527 (which is a completely arbitrary
221 and unofficial assignment based on the MD5 hash of the Internet
222 Draft). Note that by doing so, you potentially lose
223 interoperability with other TLS implementations since these might
224 be using the same extension number for other purposes.
226 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
227 opaque PRF input value to use in the handshake. This will create
228 an interal copy of the length-'len' string at 'src', and will
229 return non-zero for success.
231 To get more control and flexibility, provide a callback function
234 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
235 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
239 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
242 Callback function 'cb' will be called in handshakes, and is
243 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
244 Argument 'arg' is for application purposes (the value as given to
245 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
246 be provided to the callback function). The callback function
247 has to return non-zero to report success: usually 1 to use opaque
248 PRF input just if possible, or 2 to enforce use of the opaque PRF
249 input. In the latter case, the library will abort the handshake
250 if opaque PRF input is not successfully negotiated.
252 Arguments 'peerinput' and 'len' given to the callback function
253 will always be NULL and 0 in the case of a client. A server will
254 see the client's opaque PRF input through these variables if
255 available (NULL and 0 otherwise). Note that if the server
256 provides an opaque PRF input, the length must be the same as the
257 length of the client's opaque PRF input.
259 Note that the callback function will only be called when creating
260 a new session (session resumption can resume whatever was
261 previously negotiated), and will not be called in SSL 2.0
262 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
263 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
264 for applications that need to enforce opaque PRF input.
268 *) Update ssl code to support digests other than SHA1+MD5 for handshake
271 [Victor B. Wagner <vitus@cryptocom.ru>]
273 *) Add RFC4507 support to OpenSSL. This includes the corrections in
274 RFC4507bis. The encrypted ticket format is an encrypted encoded
275 SSL_SESSION structure, that way new session features are automatically
278 If a client application caches session in an SSL_SESSION structure
279 support is transparent because tickets are now stored in the encoded
282 The SSL_CTX structure automatically generates keys for ticket
283 protection in servers so again support should be possible
284 with no application modification.
286 If a client or server wishes to disable RFC4507 support then the option
287 SSL_OP_NO_TICKET can be set.
289 Add a TLS extension debugging callback to allow the contents of any client
290 or server extensions to be examined.
292 This work was sponsored by Google.
295 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
296 OpenSSL should now compile cleanly on gcc 4.2
297 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
299 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
300 support including streaming MAC support: this is required for GOST
302 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
304 *) Add option -stream to use PKCS#7 streaming in smime utility. New
305 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
306 to output in BER and PEM format.
309 *) Experimental support for use of HMAC via EVP_PKEY interface. This
310 allows HMAC to be handled via the EVP_DigestSign*() interface. The
311 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
312 ENGINE support for HMAC keys which are unextractable. New -mac and
313 -macopt options to dgst utility.
316 *) New option -sigopt to dgst utility. Update dgst to use
317 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
318 alternative signing paramaters such as X9.31 or PSS in the dgst
322 *) Change ssl_cipher_apply_rule(), the internal function that does
323 the work each time a ciphersuite string requests enabling
324 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
325 removing ("!foo+bar") a class of ciphersuites: Now it maintains
326 the order of disabled ciphersuites such that those ciphersuites
327 that most recently went from enabled to disabled not only stay
328 in order with respect to each other, but also have higher priority
329 than other disabled ciphersuites the next time ciphersuites are
332 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
333 the same ciphersuites as with "HIGH" alone, but in a specific
334 order where the PSK ciphersuites come first (since they are the
335 most recently disabled ciphersuites when "HIGH" is parsed).
337 Also, change ssl_create_cipher_list() (using this new
338 funcionality) such that between otherwise identical
339 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
343 *) Change ssl_create_cipher_list() so that it automatically
344 arranges the ciphersuites in reasonable order before starting
345 to process the rule string. Thus, the definition for "DEFAULT"
346 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
347 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
348 This makes it much easier to arrive at a reasonable default order
349 in applications for which anonymous ciphers are OK (meaning
350 that you can't actually use DEFAULT).
351 [Bodo Moeller; suggested by Victor Duchovni]
353 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
354 processing) into multiple integers instead of setting
355 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
356 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
357 (These masks as well as the individual bit definitions are hidden
358 away into the non-exported interface ssl/ssl_locl.h, so this
359 change to the definition of the SSL_CIPHER structure shouldn't
360 affect applications.) This give us more bits for each of these
361 categories, so there is no longer a need to coagulate AES128 and
362 AES256 into a single algorithm bit, and to coagulate Camellia128
363 and Camellia256 into a single algorithm bit, which has led to all
366 Thus, among other things, the kludge introduced in 0.9.7m and
367 0.9.8e for masking out AES256 independently of AES128 or masking
368 out Camellia256 independently of AES256 is not needed here in 0.9.9.
370 With the change, we also introduce new ciphersuite aliases that
371 so far were missing: "AES128", "AES256", "CAMELLIA128", and
375 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
376 Use the leftmost N bytes of the signature input if the input is
377 larger than the prime q (with N being the size in bytes of q).
380 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
381 it yet and it is largely untested.
384 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
387 *) Initial incomplete changes to avoid need for function casts in OpenSSL
388 some compilers (gcc 4.2 and later) reject their use. Safestack is
389 reimplemented. Update ASN1 to avoid use of legacy functions.
392 *) Win32/64 targets are linked with Winsock2.
395 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
396 to external functions. This can be used to increase CRL handling
397 efficiency especially when CRLs are very large by (for example) storing
398 the CRL revoked certificates in a database.
401 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
402 new CRLs added to a directory can be used. New command line option
403 -verify_return_error to s_client and s_server. This causes real errors
404 to be returned by the verify callback instead of carrying on no matter
405 what. This reflects the way a "real world" verify callback would behave.
408 *) GOST engine, supporting several GOST algorithms and public key formats.
409 Kindly donated by Cryptocom.
412 *) Partial support for Issuing Distribution Point CRL extension. CRLs
413 partitioned by DP are handled but no indirect CRL or reason partitioning
414 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
415 selected via a scoring technique which handles IDP and AKID in CRLs.
418 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
419 will ultimately be used for all verify operations: this will remove the
420 X509_STORE dependency on certificate verification and allow alternative
421 lookup methods. X509_STORE based implementations of these two callbacks.
424 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
425 Modify get_crl() to find a valid (unexpired) CRL if possible.
428 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
429 this would be called X509_CRL_cmp() but that name is already used by
430 a function that just compares CRL issuer names. Cache several CRL
431 extensions in X509_CRL structure and cache CRLDP in X509.
434 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
435 this maps equivalent X509_NAME structures into a consistent structure.
436 Name comparison can then be performed rapidly using memcmp().
439 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
443 *) Allow digests to supply their own micalg string for S/MIME type using
444 the ctrl EVP_MD_CTRL_MICALG.
447 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
448 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
449 ctrl. It can then customise the structure before and/or after signing
453 *) New function OBJ_add_sigid() to allow application defined signature OIDs
454 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
455 to free up any added signature OIDs.
458 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
459 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
460 digest and cipher tables. New options added to openssl utility:
461 list-message-digest-algorithms and list-cipher-algorithms.
464 *) Change the array representation of binary polynomials: the list
465 of degrees of non-zero coefficients is now terminated with -1.
466 Previously it was terminated with 0, which was also part of the
467 value; thus, the array representation was not applicable to
468 polynomials where t^0 has coefficient zero. This change makes
469 the array representation useful in a more general context.
472 *) Various modifications and fixes to SSL/TLS cipher string
473 handling. For ECC, the code now distinguishes between fixed ECDH
474 with RSA certificates on the one hand and with ECDSA certificates
475 on the other hand, since these are separate ciphersuites. The
476 unused code for Fortezza ciphersuites has been removed.
478 For consistency with EDH, ephemeral ECDH is now called "EECDH"
479 (not "ECDHE"). For consistency with the code for DH
480 certificates, use of ECDH certificates is now considered ECDH
481 authentication, not RSA or ECDSA authentication (the latter is
482 merely the CA's signing algorithm and not actively used in the
485 The temporary ciphersuite alias "ECCdraft" is no longer
486 available, and ECC ciphersuites are no longer excluded from "ALL"
487 and "DEFAULT". The following aliases now exist for RFC 4492
488 ciphersuites, most of these by analogy with the DH case:
490 kECDHr - ECDH cert, signed with RSA
491 kECDHe - ECDH cert, signed with ECDSA
492 kECDH - ECDH cert (signed with either RSA or ECDSA)
493 kEECDH - ephemeral ECDH
494 ECDH - ECDH cert or ephemeral ECDH
500 AECDH - anonymous ECDH
501 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
505 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
506 Use correct micalg parameters depending on digest(s) in signed message.
509 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
510 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
513 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
514 an engine to register a method. Add ENGINE lookups for methods and
515 functional reference processing.
518 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
519 EVP_{Sign,Verify}* which allow an application to customise the signature
523 *) New -resign option to smime utility. This adds one or more signers
524 to an existing PKCS#7 signedData structure. Also -md option to use an
525 alternative message digest algorithm for signing.
528 *) Tidy up PKCS#7 routines and add new functions to make it easier to
529 create PKCS7 structures containing multiple signers. Update smime
530 application to support multiple signers.
533 *) New -macalg option to pkcs12 utility to allow setting of an alternative
537 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
538 Reorganize PBE internals to lookup from a static table using NIDs,
539 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
540 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
541 PRF which will be automatically used with PBES2.
544 *) Replace the algorithm specific calls to generate keys in "req" with the
548 *) Update PKCS#7 enveloped data routines to use new API. This is now
549 supported by any public key method supporting the encrypt operation. A
550 ctrl is added to allow the public key algorithm to examine or modify
551 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
555 *) Add a ctrl to asn1 method to allow a public key algorithm to express
556 a default digest type to use. In most cases this will be SHA1 but some
557 algorithms (such as GOST) need to specify an alternative digest. The
558 return value indicates how strong the prefernce is 1 means optional and
559 2 is mandatory (that is it is the only supported type). Modify
560 ASN1_item_sign() to accept a NULL digest argument to indicate it should
561 use the default md. Update openssl utilities to use the default digest
562 type for signing if it is not explicitly indicated.
565 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
566 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
567 signing method from the key type. This effectively removes the link
568 between digests and public key types.
571 *) Add an OID cross reference table and utility functions. Its purpose is to
572 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
573 rsaEncryption. This will allow some of the algorithm specific hackery
574 needed to use the correct OID to be removed.
577 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
578 structures for PKCS7_sign(). They are now set up by the relevant public
582 *) Add provisional EC pkey method with support for ECDSA and ECDH.
585 *) Add support for key derivation (agreement) in the API, DH method and
589 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
590 public and private key formats. As a side effect these add additional
591 command line functionality not previously available: DSA signatures can be
592 generated and verified using pkeyutl and DH key support and generation in
597 [Oliver Tappe <zooey@hirschkaefer.de>]
599 *) New make target "install_html_docs" installs HTML renditions of the
601 [Oliver Tappe <zooey@hirschkaefer.de>]
603 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
604 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
605 support key and parameter generation and add initial key generation
606 functionality for RSA.
609 *) Add functions for main EVP_PKEY_method operations. The undocumented
610 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
611 EVP_PKEY_{encrypt,decrypt}_old.
614 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
615 key API, doesn't do much yet.
618 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
619 public key algorithms. New option to openssl utility:
620 "list-public-key-algorithms" to print out info.
623 *) Implement the Supported Elliptic Curves Extension for
624 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
627 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
628 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
631 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
632 utilities such as rsa, dsa, dsaparam etc except they process any key
636 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
637 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
638 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
642 *) Initial support for pluggable public key ASN1.
643 De-spaghettify the public key ASN1 handling. Move public and private
644 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
645 algorithm specific handling to a single module within the relevant
646 algorithm directory. Add functions to allow (near) opaque processing
647 of public and private key structures.
650 *) Implement the Supported Point Formats Extension for
651 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
654 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
655 for the psk identity [hint] and the psk callback functions to the
656 SSL_SESSION, SSL and SSL_CTX structure.
659 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
663 SSL_CTX_use_psk_identity_hint
664 SSL_get_psk_identity_hint
666 SSL_use_psk_identity_hint
668 [Mika Kousa and Pasi Eronen of Nokia Corporation]
670 *) Add RFC 3161 compliant time stamp request creation, response generation
671 and response verification functionality.
672 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
674 *) Add initial support for TLS extensions, specifically for the server_name
675 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
676 have new members for a host name. The SSL data structure has an
677 additional member SSL_CTX *initial_ctx so that new sessions can be
678 stored in that context to allow for session resumption, even after the
679 SSL has been switched to a new SSL_CTX in reaction to a client's
680 server_name extension.
682 New functions (subject to change):
685 SSL_get_servername_type()
688 New CTRL codes and macros (subject to change):
690 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
691 - SSL_CTX_set_tlsext_servername_callback()
692 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
693 - SSL_CTX_set_tlsext_servername_arg()
694 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
696 openssl s_client has a new '-servername ...' option.
698 openssl s_server has new options '-servername_host ...', '-cert2 ...',
699 '-key2 ...', '-servername_fatal' (subject to change). This allows
700 testing the HostName extension for a specific single host name ('-cert'
701 and '-key' remain fallbacks for handshakes without HostName
702 negotiation). If the unrecogninzed_name alert has to be sent, this by
703 default is a warning; it becomes fatal with the '-servername_fatal'
706 [Peter Sylvester, Remy Allais, Christophe Renou]
708 *) Whirlpool hash implementation is added.
711 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
712 bn(64,32). Because of instruction set limitations it doesn't have
713 any negative impact on performance. This was done mostly in order
714 to make it possible to share assembler modules, such as bn_mul_mont
715 implementations, between 32- and 64-bit builds without hassle.
718 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
719 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
723 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
724 dedicated Montgomery multiplication procedure, is introduced.
725 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
726 "64-bit" performance on certain 32-bit targets.
729 *) New option SSL_OP_NO_COMP to disable use of compression selectively
730 in SSL structures. New SSL ctrl to set maximum send fragment size.
731 Save memory by seeting the I/O buffer sizes dynamically instead of
732 using the maximum available value.
735 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
736 in addition to the text details.
739 *) Very, very preliminary EXPERIMENTAL support for printing of general
740 ASN1 structures. This currently produces rather ugly output and doesn't
741 handle several customised structures at all.
744 *) Integrated support for PVK file format and some related formats such
745 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
746 these in the 'rsa' and 'dsa' utilities.
749 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
752 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
753 place for the (very old) "NETSCAPE" format certificates which are now
754 handled using new ASN1 code equivalents.
757 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
758 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
759 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
762 *) Modify CRL distribution points extension code to print out previously
763 unsupported fields. Enhance extension setting code to allow setting of
767 *) Add print and set support for Issuing Distribution Point CRL extension.
770 *) Change 'Configure' script to enable Camellia by default.
773 Changes between 0.9.8k and 0.9.8l [xx XXX xxxx]
776 [Ilya O. <vrghost@gmail.com>]
778 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
780 *) Don't set val to NULL when freeing up structures, it is freed up by
781 underlying code. If sizeof(void *) > sizeof(long) this can result in
782 zeroing past the valid field. (CVE-2009-0789)
783 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
785 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
786 checked correctly. This would allow some invalid signed attributes to
787 appear to verify correctly. (CVE-2009-0591)
788 [Ivan Nestlerode <inestlerode@us.ibm.com>]
790 *) Reject UniversalString and BMPString types with invalid lengths. This
791 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
792 a legal length. (CVE-2009-0590)
795 *) Set S/MIME signing as the default purpose rather than setting it
796 unconditionally. This allows applications to override it at the store
800 *) Permit restricted recursion of ASN1 strings. This is needed in practice
801 to handle some structures.
804 *) Improve efficiency of mem_gets: don't search whole buffer each time
806 [Jeremy Shapiro <jnshapir@us.ibm.com>]
808 *) New -hex option for openssl rand.
811 *) Print out UTF8String and NumericString when parsing ASN1.
814 *) Support NumericString type for name components.
817 *) Allow CC in the environment to override the automatically chosen
818 compiler. Note that nothing is done to ensure flags work with the
822 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
824 *) Properly check EVP_VerifyFinal() and similar return values
826 [Ben Laurie, Bodo Moeller, Google Security Team]
828 *) Enable TLS extensions by default.
831 *) Allow the CHIL engine to be loaded, whether the application is
832 multithreaded or not. (This does not release the developer from the
833 obligation to set up the dynamic locking callbacks.)
834 [Sander Temme <sander@temme.net>]
836 *) Use correct exit code if there is an error in dgst command.
837 [Steve Henson; problem pointed out by Roland Dirlewanger]
839 *) Tweak Configure so that you need to say "experimental-jpake" to enable
840 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
843 *) Add experimental JPAKE support, including demo authentication in
844 s_client and s_server.
847 *) Set the comparison function in v3_addr_canonize().
848 [Rob Austein <sra@hactrn.net>]
850 *) Add support for XMPP STARTTLS in s_client.
851 [Philip Paeps <philip@freebsd.org>]
853 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
854 to ensure that even with this option, only ciphersuites in the
855 server's preference list will be accepted. (Note that the option
856 applies only when resuming a session, so the earlier behavior was
857 just about the algorithm choice for symmetric cryptography.)
860 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
862 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
863 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
866 *) The fix in 0.9.8c that supposedly got rid of unsafe
867 double-checked locking was incomplete for RSA blinding,
868 addressing just one layer of what turns out to have been
869 doubly unsafe triple-checked locking.
871 So now fix this for real by retiring the MONT_HELPER macro
872 in crypto/rsa/rsa_eay.c.
874 [Bodo Moeller; problem pointed out by Marius Schilder]
876 *) Various precautionary measures:
878 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
880 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
881 (NB: This would require knowledge of the secret session ticket key
882 to exploit, in which case you'd be SOL either way.)
884 - Change bn_nist.c so that it will properly handle input BIGNUMs
885 outside the expected range.
887 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
890 [Neel Mehta, Bodo Moeller]
892 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
893 the load fails. Useful for distros.
894 [Ben Laurie and the FreeBSD team]
896 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
899 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
902 *) Expand ENGINE to support engine supplied SSL client certificate functions.
904 This work was sponsored by Logica.
907 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
908 keystores. Support for SSL/TLS client authentication too.
909 Not compiled unless enable-capieng specified to Configure.
911 This work was sponsored by Logica.
914 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
915 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
916 attribute creation routines such as certifcate requests and PKCS#12
920 Changes between 0.9.8g and 0.9.8h [28 May 2008]
922 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
923 handshake which could lead to a cilent crash as found using the
924 Codenomicon TLS test suite (CVE-2008-1672)
925 [Steve Henson, Mark Cox]
927 *) Fix double free in TLS server name extensions which could lead to
928 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
931 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
933 Clear the error queue to ensure that error entries left from
934 older function calls do not interfere with the correct operation.
935 [Lutz Jaenicke, Erik de Castro Lopo]
937 *) Remove root CA certificates of commercial CAs:
939 The OpenSSL project does not recommend any specific CA and does not
940 have any policy with respect to including or excluding any CA.
941 Therefore it does not make any sense to ship an arbitrary selection
942 of root CA certificates with the OpenSSL software.
945 *) RSA OAEP patches to fix two separate invalid memory reads.
946 The first one involves inputs when 'lzero' is greater than
947 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
948 before the beginning of from). The second one involves inputs where
949 the 'db' section contains nothing but zeroes (there is a one-byte
950 invalid read after the end of 'db').
951 [Ivan Nestlerode <inestlerode@us.ibm.com>]
953 *) Partial backport from 0.9.9-dev:
955 Introduce bn_mul_mont (dedicated Montgomery multiplication
956 procedure) as a candidate for BIGNUM assembler implementation.
957 While 0.9.9-dev uses assembler for various architectures, only
958 x86_64 is available by default here in the 0.9.8 branch, and
959 32-bit x86 is available through a compile-time setting.
961 To try the 32-bit x86 assembler implementation, use Configure
962 option "enable-montasm" (which exists only for this backport).
964 As "enable-montasm" for 32-bit x86 disclaims code stability
965 anyway, in this constellation we activate additional code
966 backported from 0.9.9-dev for further performance improvements,
967 namely BN_from_montgomery_word. (To enable this otherwise,
968 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
970 [Andy Polyakov (backport partially by Bodo Moeller)]
972 *) Add TLS session ticket callback. This allows an application to set
973 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
974 values. This is useful for key rollover for example where several key
975 sets may exist with different names.
978 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
979 This was broken until now in 0.9.8 releases, such that the only way
980 a registered ENGINE could be used (assuming it initialises
981 successfully on the host) was to explicitly set it as the default
982 for the relevant algorithms. This is in contradiction with 0.9.7
983 behaviour and the documentation. With this fix, when an ENGINE is
984 registered into a given algorithm's table of implementations, the
985 'uptodate' flag is reset so that auto-discovery will be used next
986 time a new context for that algorithm attempts to select an
988 [Ian Lister (tweaked by Geoff Thorpe)]
990 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
991 implemention in the following ways:
993 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
996 Lack of BER streaming support means one pass streaming processing is
997 only supported if data is detached: setting the streaming flag is
998 ignored for embedded content.
1000 CMS support is disabled by default and must be explicitly enabled
1001 with the enable-cms configuration option.
1004 *) Update the GMP engine glue to do direct copies between BIGNUM and
1005 mpz_t when openssl and GMP use the same limb size. Otherwise the
1006 existing "conversion via a text string export" trick is still used.
1007 [Paul Sheer <paulsheer@gmail.com>]
1009 *) Zlib compression BIO. This is a filter BIO which compressed and
1010 uncompresses any data passed through it.
1013 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1014 RFC3394 compatible AES key wrapping.
1017 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1018 sets string data without copying. X509_ALGOR_set0() and
1019 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1020 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1021 from an X509_ATTRIBUTE structure optionally checking it occurs only
1022 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1026 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1027 to get the expected BN_FLG_CONSTTIME behavior.
1028 [Bodo Moeller (Google)]
1032 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1033 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1034 - added some more tests to do_tests.pl
1035 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1036 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1037 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1038 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1039 - various changes to netware.pl to enable gcc-cross builds on Win32
1041 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1042 - various changes to fix missing prototype warnings
1043 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1044 - added AES, WHIRLPOOL and CPUID assembler code to build files
1045 - added missing AES assembler make rules to mk1mf.pl
1046 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1047 [Guenter Knauf <eflash@gmx.net>]
1049 *) Implement certificate status request TLS extension defined in RFC3546.
1050 A client can set the appropriate parameters and receive the encoded
1051 OCSP response via a callback. A server can query the supplied parameters
1052 and set the encoded OCSP response in the callback. Add simplified examples
1053 to s_client and s_server.
1056 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1058 *) Fix various bugs:
1059 + Binary incompatibility of ssl_ctx_st structure
1060 + DTLS interoperation with non-compliant servers
1061 + Don't call get_session_cb() without proposed session
1062 + Fix ia64 assembler code
1063 [Andy Polyakov, Steve Henson]
1065 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1067 *) DTLS Handshake overhaul. There were longstanding issues with
1068 OpenSSL DTLS implementation, which were making it impossible for
1069 RFC 4347 compliant client to communicate with OpenSSL server.
1070 Unfortunately just fixing these incompatibilities would "cut off"
1071 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1072 server keeps tolerating non RFC compliant syntax. The opposite is
1073 not true, 0.9.8f client can not communicate with earlier server.
1074 This update even addresses CVE-2007-4995.
1077 *) Changes to avoid need for function casts in OpenSSL: some compilers
1078 (gcc 4.2 and later) reject their use.
1079 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1082 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1083 RFC4507bis. The encrypted ticket format is an encrypted encoded
1084 SSL_SESSION structure, that way new session features are automatically
1087 If a client application caches session in an SSL_SESSION structure
1088 support is transparent because tickets are now stored in the encoded
1091 The SSL_CTX structure automatically generates keys for ticket
1092 protection in servers so again support should be possible
1093 with no application modification.
1095 If a client or server wishes to disable RFC4507 support then the option
1096 SSL_OP_NO_TICKET can be set.
1098 Add a TLS extension debugging callback to allow the contents of any client
1099 or server extensions to be examined.
1101 This work was sponsored by Google.
1104 *) Add initial support for TLS extensions, specifically for the server_name
1105 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1106 have new members for a host name. The SSL data structure has an
1107 additional member SSL_CTX *initial_ctx so that new sessions can be
1108 stored in that context to allow for session resumption, even after the
1109 SSL has been switched to a new SSL_CTX in reaction to a client's
1110 server_name extension.
1112 New functions (subject to change):
1114 SSL_get_servername()
1115 SSL_get_servername_type()
1118 New CTRL codes and macros (subject to change):
1120 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1121 - SSL_CTX_set_tlsext_servername_callback()
1122 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1123 - SSL_CTX_set_tlsext_servername_arg()
1124 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1126 openssl s_client has a new '-servername ...' option.
1128 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1129 '-key2 ...', '-servername_fatal' (subject to change). This allows
1130 testing the HostName extension for a specific single host name ('-cert'
1131 and '-key' remain fallbacks for handshakes without HostName
1132 negotiation). If the unrecogninzed_name alert has to be sent, this by
1133 default is a warning; it becomes fatal with the '-servername_fatal'
1136 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1138 *) Add AES and SSE2 assembly language support to VC++ build.
1141 *) Mitigate attack on final subtraction in Montgomery reduction.
1144 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1145 (which previously caused an internal error).
1148 *) Squeeze another 10% out of IGE mode when in != out.
1151 *) AES IGE mode speedup.
1152 [Dean Gaudet (Google)]
1154 *) Add the Korean symmetric 128-bit cipher SEED (see
1155 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1156 add SEED ciphersuites from RFC 4162:
1158 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1159 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1160 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1161 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1163 To minimize changes between patchlevels in the OpenSSL 0.9.8
1164 series, SEED remains excluded from compilation unless OpenSSL
1165 is configured with 'enable-seed'.
1166 [KISA, Bodo Moeller]
1168 *) Mitigate branch prediction attacks, which can be practical if a
1169 single processor is shared, allowing a spy process to extract
1170 information. For detailed background information, see
1171 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1172 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1173 and Necessary Software Countermeasures"). The core of the change
1174 are new versions BN_div_no_branch() and
1175 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1176 respectively, which are slower, but avoid the security-relevant
1177 conditional branches. These are automatically called by BN_div()
1178 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1179 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1180 remove a conditional branch.
1182 BN_FLG_CONSTTIME is the new name for the previous
1183 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1184 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1185 in the exponent causes BN_mod_exp_mont() to use the alternative
1186 implementation in BN_mod_exp_mont_consttime().) The old name
1187 remains as a deprecated alias.
1189 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1190 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1191 constant-time implementations for more than just exponentiation.
1192 Here too the old name is kept as a deprecated alias.
1194 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1195 the BN_BLINDING structure gets an independent copy of the
1196 modulus. This means that the previous "BIGNUM *m" argument to
1197 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1198 essentially becomes "const BIGNUM *m", although we can't actually
1199 change this in the header file before 0.9.9. It allows
1200 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1201 enable BN_FLG_CONSTTIME.
1203 [Matthew D Wood (Intel Corp)]
1205 *) In the SSL/TLS server implementation, be strict about session ID
1206 context matching (which matters if an application uses a single
1207 external cache for different purposes). Previously,
1208 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1209 set. This did ensure strict client verification, but meant that,
1210 with applications using a single external cache for quite
1211 different requirements, clients could circumvent ciphersuite
1212 restrictions for a given session ID context by starting a session
1213 in a different context.
1216 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1217 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1218 authentication-only ciphersuites.
1221 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1222 not complete and could lead to a possible single byte overflow
1223 (CVE-2007-5135) [Ben Laurie]
1225 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1227 *) Since AES128 and AES256 (and similarly Camellia128 and
1228 Camellia256) share a single mask bit in the logic of
1229 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1230 kludge to work properly if AES128 is available and AES256 isn't
1231 (or if Camellia128 is available and Camellia256 isn't).
1234 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1235 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1236 When a point or a seed is encoded in a BIT STRING, we need to
1237 prevent the removal of trailing zero bits to get the proper DER
1238 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1239 of a NamedBitList, for which trailing 0 bits need to be removed.)
1242 *) Have SSL/TLS server implementation tolerate "mismatched" record
1243 protocol version while receiving ClientHello even if the
1244 ClientHello is fragmented. (The server can't insist on the
1245 particular protocol version it has chosen before the ServerHello
1246 message has informed the client about his choice.)
1249 *) Add RFC 3779 support.
1250 [Rob Austein for ARIN, Ben Laurie]
1252 *) Load error codes if they are not already present instead of using a
1253 static variable. This allows them to be cleanly unloaded and reloaded.
1254 Improve header file function name parsing.
1257 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1258 or CAPABILITY handshake as required by RFCs.
1261 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1263 *) Introduce limits to prevent malicious keys being able to
1264 cause a denial of service. (CVE-2006-2940)
1265 [Steve Henson, Bodo Moeller]
1267 *) Fix ASN.1 parsing of certain invalid structures that can result
1268 in a denial of service. (CVE-2006-2937) [Steve Henson]
1270 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1271 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1273 *) Fix SSL client code which could crash if connecting to a
1274 malicious SSLv2 server. (CVE-2006-4343)
1275 [Tavis Ormandy and Will Drewry, Google Security Team]
1277 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1278 match only those. Before that, "AES256-SHA" would be interpreted
1279 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1280 the same strength classification in 0.9.7h) as we currently only
1281 have a single AES bit in the ciphersuite description bitmap.
1282 That change, however, also applied to ciphersuite strings such as
1283 "RC4-MD5" that intentionally matched multiple ciphersuites --
1284 namely, SSL 2.0 ciphersuites in addition to the more common ones
1285 from SSL 3.0/TLS 1.0.
1287 So we change the selection algorithm again: Naming an explicit
1288 ciphersuite selects this one ciphersuite, and any other similar
1289 ciphersuite (same bitmap) from *other* protocol versions.
1290 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1291 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1293 Since SSL 2.0 does not have any ciphersuites for which the
1294 128/256 bit distinction would be relevant, this works for now.
1295 The proper fix will be to use different bits for AES128 and
1296 AES256, which would have avoided the problems from the beginning;
1297 however, bits are scarce, so we can only do this in a new release
1298 (not just a patchlevel) when we can change the SSL_CIPHER
1299 definition to split the single 'unsigned long mask' bitmap into
1300 multiple values to extend the available space.
1304 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1306 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1307 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1309 *) Add AES IGE and biIGE modes.
1312 *) Change the Unix randomness entropy gathering to use poll() when
1313 possible instead of select(), since the latter has some
1314 undesirable limitations.
1315 [Darryl Miles via Richard Levitte and Bodo Moeller]
1317 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1318 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1319 cannot be implicitly activated as part of, e.g., the "AES" alias.
1320 However, please upgrade to OpenSSL 0.9.9[-dev] for
1321 non-experimental use of the ECC ciphersuites to get TLS extension
1322 support, which is required for curve and point format negotiation
1323 to avoid potential handshake problems.
1326 *) Disable rogue ciphersuites:
1328 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1329 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1330 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1332 The latter two were purportedly from
1333 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1336 Also deactivate the remaining ciphersuites from
1337 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1338 unofficial, and the ID has long expired.
1341 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1342 dual-core machines) and other potential thread-safety issues.
1345 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1346 versions), which is now available for royalty-free use
1347 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1348 Also, add Camellia TLS ciphersuites from RFC 4132.
1350 To minimize changes between patchlevels in the OpenSSL 0.9.8
1351 series, Camellia remains excluded from compilation unless OpenSSL
1352 is configured with 'enable-camellia'.
1355 *) Disable the padding bug check when compression is in use. The padding
1356 bug check assumes the first packet is of even length, this is not
1357 necessarily true if compresssion is enabled and can result in false
1358 positives causing handshake failure. The actual bug test is ancient
1359 code so it is hoped that implementations will either have fixed it by
1360 now or any which still have the bug do not support compression.
1363 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1365 *) When applying a cipher rule check to see if string match is an explicit
1366 cipher suite and only match that one cipher suite if it is.
1369 *) Link in manifests for VC++ if needed.
1370 [Austin Ziegler <halostatue@gmail.com>]
1372 *) Update support for ECC-based TLS ciphersuites according to
1373 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1374 TLS extensions, which are supported starting with the 0.9.9
1375 branch, not in the OpenSSL 0.9.8 branch).
1378 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1379 opaque EVP_CIPHER_CTX handling.
1382 *) Fixes and enhancements to zlib compression code. We now only use
1383 "zlib1.dll" and use the default __cdecl calling convention on Win32
1384 to conform with the standards mentioned here:
1385 http://www.zlib.net/DLL_FAQ.txt
1386 Static zlib linking now works on Windows and the new --with-zlib-include
1387 --with-zlib-lib options to Configure can be used to supply the location
1388 of the headers and library. Gracefully handle case where zlib library
1392 *) Several fixes and enhancements to the OID generation code. The old code
1393 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1394 handle numbers larger than ULONG_MAX, truncated printing and had a
1395 non standard OBJ_obj2txt() behaviour.
1398 *) Add support for building of engines under engine/ as shared libraries
1399 under VC++ build system.
1402 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1403 Hopefully, we will not see any false combination of paths any more.
1406 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1408 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1409 (part of SSL_OP_ALL). This option used to disable the
1410 countermeasure against man-in-the-middle protocol-version
1411 rollback in the SSL 2.0 server implementation, which is a bad
1412 idea. (CVE-2005-2969)
1414 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1415 for Information Security, National Institute of Advanced Industrial
1416 Science and Technology [AIST], Japan)]
1418 *) Add two function to clear and return the verify parameter flags.
1421 *) Keep cipherlists sorted in the source instead of sorting them at
1422 runtime, thus removing the need for a lock.
1425 *) Avoid some small subgroup attacks in Diffie-Hellman.
1426 [Nick Mathewson and Ben Laurie]
1428 *) Add functions for well-known primes.
1431 *) Extended Windows CE support.
1432 [Satoshi Nakamura and Andy Polyakov]
1434 *) Initialize SSL_METHOD structures at compile time instead of during
1435 runtime, thus removing the need for a lock.
1438 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1439 attempting to decrypt each encrypted key in turn. Add support to
1443 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1445 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1448 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1451 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1452 key into the same file any more.
1455 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1458 *) Add -utf8 command line and config file option to 'ca'.
1459 [Stefan <stf@udoma.org]
1461 *) Removed the macro des_crypt(), as it seems to conflict with some
1462 libraries. Use DES_crypt().
1465 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1466 involves renaming the source and generated shared-libs for
1467 both. The engines will accept the corrected or legacy ids
1468 ('ncipher' and '4758_cca' respectively) when binding. NB,
1469 this only applies when building 'shared'.
1470 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1472 *) Add attribute functions to EVP_PKEY structure. Modify
1473 PKCS12_create() to recognize a CSP name attribute and
1474 use it. Make -CSP option work again in pkcs12 utility.
1477 *) Add new functionality to the bn blinding code:
1478 - automatic re-creation of the BN_BLINDING parameters after
1479 a fixed number of uses (currently 32)
1480 - add new function for parameter creation
1481 - introduce flags to control the update behaviour of the
1482 BN_BLINDING parameters
1483 - hide BN_BLINDING structure
1484 Add a second BN_BLINDING slot to the RSA structure to improve
1485 performance when a single RSA object is shared among several
1489 *) Add support for DTLS.
1490 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1492 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1493 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1496 *) Remove buggy and incompletet DH cert support from
1497 ssl/ssl_rsa.c and ssl/s3_both.c
1500 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1501 the apps/openssl applications.
1504 *) Compile clean with "-Wall -Wmissing-prototypes
1505 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1506 DEBUG_SAFESTACK must also be set.
1509 *) Change ./Configure so that certain algorithms can be disabled by default.
1510 The new counterpiece to "no-xxx" is "enable-xxx".
1512 The patented RC5 and MDC2 algorithms will now be disabled unless
1513 "enable-rc5" and "enable-mdc2", respectively, are specified.
1515 (IDEA remains enabled despite being patented. This is because IDEA
1516 is frequently required for interoperability, and there is no license
1517 fee for non-commercial use. As before, "no-idea" can be used to
1518 avoid this algorithm.)
1522 *) Add processing of proxy certificates (see RFC 3820). This work was
1523 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1524 EGEE (Enabling Grids for E-science in Europe).
1527 *) RC4 performance overhaul on modern architectures/implementations, such
1528 as Intel P4, IA-64 and AMD64.
1531 *) New utility extract-section.pl. This can be used specify an alternative
1532 section number in a pod file instead of having to treat each file as
1533 a separate case in Makefile. This can be done by adding two lines to the
1536 =for comment openssl_section:XXX
1538 The blank line is mandatory.
1542 *) New arguments -certform, -keyform and -pass for s_client and s_server
1543 to allow alternative format key and certificate files and passphrase
1547 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1548 update associated structures and add various utility functions.
1550 Add new policy related verify parameters, include policy checking in
1551 standard verify code. Enhance 'smime' application with extra parameters
1552 to support policy checking and print out.
1555 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1556 Nehemiah processors. These extensions support AES encryption in hardware
1557 as well as RNG (though RNG support is currently disabled).
1558 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1560 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1563 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1564 [Andy Polyakov and a number of other people]
1566 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1567 implementation contributed by IBM.
1568 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1570 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1571 exponent rather than 'unsigned long'. There is a corresponding change to
1572 the new 'rsa_keygen' element of the RSA_METHOD structure.
1573 [Jelte Jansen, Geoff Thorpe]
1575 *) Functionality for creating the initial serial number file is now
1576 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1578 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1579 number file to 1, which is bound to cause problems. To avoid
1580 the problems while respecting compatibility between different 0.9.7
1581 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1582 CA.pl for serial number initialization. With the new release 0.9.8,
1583 we can fix the problem directly in the 'ca' utility.)
1586 *) Reduced header interdepencies by declaring more opaque objects in
1587 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1588 give fewer recursive includes, which could break lazy source code - so
1589 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1590 developers should define this symbol when building and using openssl to
1591 ensure they track the recommended behaviour, interfaces, [etc], but
1592 backwards-compatible behaviour prevails when this isn't defined.
1595 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1598 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1599 This will generate a random key of the appropriate length based on the
1600 cipher context. The EVP_CIPHER can provide its own random key generation
1601 routine to support keys of a specific form. This is used in the des and
1602 3des routines to generate a key of the correct parity. Update S/MIME
1603 code to use new functions and hence generate correct parity DES keys.
1604 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1605 valid (weak or incorrect parity).
1608 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1609 as looking them up. This is useful when the verified structure may contain
1610 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1611 present unless the new PKCS7_NO_CRL flag is asserted.
1614 *) Extend ASN1 oid configuration module. It now additionally accepts the
1617 shortName = some long name, 1.2.3.4
1620 *) Reimplemented the BN_CTX implementation. There is now no more static
1621 limitation on the number of variables it can handle nor the depth of the
1622 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1623 information can now expand as required, and rather than having a single
1624 static array of bignums, BN_CTX now uses a linked-list of such arrays
1625 allowing it to expand on demand whilst maintaining the usefulness of
1626 BN_CTX's "bundling".
1629 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1630 to allow all RSA operations to function using a single BN_CTX.
1633 *) Preliminary support for certificate policy evaluation and checking. This
1634 is initially intended to pass the tests outlined in "Conformance Testing
1635 of Relying Party Client Certificate Path Processing Logic" v1.07.
1638 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1639 remained unused and not that useful. A variety of other little bignum
1640 tweaks and fixes have also been made continuing on from the audit (see
1644 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1645 associated ASN1, EVP and SSL functions and old ASN1 macros.
1648 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1649 and this should never fail. So the return value from the use of
1650 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1651 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1654 *) BN_CTX_get() should return zero-valued bignums, providing the same
1655 initialised value as BN_new().
1656 [Geoff Thorpe, suggested by Ulf Möller]
1658 *) Support for inhibitAnyPolicy certificate extension.
1661 *) An audit of the BIGNUM code is underway, for which debugging code is
1662 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1663 is considered valid when processing BIGNUMs, and causes execution to
1664 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1665 further steps are taken to deliberately pollute unused data in BIGNUM
1666 structures to try and expose faulty code further on. For now, openssl will
1667 (in its default mode of operation) continue to tolerate the inconsistent
1668 forms that it has tolerated in the past, but authors and packagers should
1669 consider trying openssl and their own applications when compiled with
1670 these debugging symbols defined. It will help highlight potential bugs in
1671 their own code, and will improve the test coverage for OpenSSL itself. At
1672 some point, these tighter rules will become openssl's default to improve
1673 maintainability, though the assert()s and other overheads will remain only
1674 in debugging configurations. See bn.h for more details.
1675 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1677 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1678 that can only be obtained through BN_CTX_new() (which implicitly
1679 initialises it). The presence of this function only made it possible
1680 to overwrite an existing structure (and cause memory leaks).
1683 *) Because of the callback-based approach for implementing LHASH as a
1684 template type, lh_insert() adds opaque objects to hash-tables and
1685 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1686 to clean up those corresponding objects before destroying the hash table
1687 (and losing the object pointers). So some over-zealous constifications in
1688 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1689 objects as "const" and the lh_doall[_arg] callback wrappers are not
1690 prototyped to have "const" restrictions on the object pointers they are
1691 given (and so aren't required to cast them away any more).
1694 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1695 (speed) prefers to use its own implementation. The two implementations
1696 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1697 its object type properly exposed (MS_TM) instead of casting to/from "char
1698 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1699 aren't necessarily the greatest nomenclatures - but this is what was used
1700 internally to the implementation so I've used that for now.
1703 *) Ensure that deprecated functions do not get compiled when
1704 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1705 the self-tests were still using deprecated key-generation functions so
1706 these have been updated also.
1709 *) Reorganise PKCS#7 code to separate the digest location functionality
1710 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1711 New function PKCS7_set_digest() to set the digest type for PKCS#7
1712 digestedData type. Add additional code to correctly generate the
1713 digestedData type and add support for this type in PKCS7 initialization
1717 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1718 structure of type "other".
1721 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1722 sure the loop does correctly stop and breaking ("division by zero")
1723 modulus operations are not performed. The (pre-generated) prime
1724 table crypto/bn/bn_prime.h was already correct, but it could not be
1725 re-generated on some platforms because of the "division by zero"
1726 situation in the script.
1727 [Ralf S. Engelschall]
1729 *) Update support for ECC-based TLS ciphersuites according to
1730 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1731 SHA-1 now is only used for "small" curves (where the
1732 representation of a field element takes up to 24 bytes); for
1733 larger curves, the field element resulting from ECDH is directly
1734 used as premaster secret.
1735 [Douglas Stebila (Sun Microsystems Laboratories)]
1737 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1738 curve secp160r1 to the tests.
1739 [Douglas Stebila (Sun Microsystems Laboratories)]
1741 *) Add the possibility to load symbols globally with DSO.
1742 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1744 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1745 control of the error stack.
1748 *) Add support for STORE in ENGINE.
1751 *) Add the STORE type. The intention is to provide a common interface
1752 to certificate and key stores, be they simple file-based stores, or
1753 HSM-type store, or LDAP stores, or...
1754 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1757 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1758 pass a list of arguments to any function as well as provide a way
1759 for a function to pass data back to the caller.
1762 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1763 works like BUF_strdup() but can be used to duplicate a portion of
1764 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1768 *) Add the function sk_find_ex() which works like sk_find(), but will
1769 return an index to an element even if an exact match couldn't be
1770 found. The index is guaranteed to point at the element where the
1771 searched-for key would be inserted to preserve sorting order.
1774 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1775 takes an extra flags argument for optional functionality. Currently,
1776 the following flags are defined:
1778 OBJ_BSEARCH_VALUE_ON_NOMATCH
1779 This one gets OBJ_bsearch_ex() to return a pointer to the first
1780 element where the comparing function returns a negative or zero
1783 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1784 This one gets OBJ_bsearch_ex() to return a pointer to the first
1785 element where the comparing function returns zero. This is useful
1786 if there are more than one element where the comparing function
1790 *) Make it possible to create self-signed certificates with 'openssl ca'
1791 in such a way that the self-signed certificate becomes part of the
1792 CA database and uses the same mechanisms for serial number generation
1793 as all other certificate signing. The new flag '-selfsign' enables
1794 this functionality. Adapt CA.sh and CA.pl.in.
1797 *) Add functionality to check the public key of a certificate request
1798 against a given private. This is useful to check that a certificate
1799 request can be signed by that key (self-signing).
1802 *) Make it possible to have multiple active certificates with the same
1803 subject in the CA index file. This is done only if the keyword
1804 'unique_subject' is set to 'no' in the main CA section (default
1805 if 'CA_default') of the configuration file. The value is saved
1806 with the database itself in a separate index attribute file,
1807 named like the index file with '.attr' appended to the name.
1810 *) Generate muti valued AVAs using '+' notation in config files for
1814 *) Support for nameConstraints certificate extension.
1817 *) Support for policyConstraints certificate extension.
1820 *) Support for policyMappings certificate extension.
1823 *) Make sure the default DSA_METHOD implementation only uses its
1824 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1825 and change its own handlers to be NULL so as to remove unnecessary
1826 indirection. This lets alternative implementations fallback to the
1827 default implementation more easily.
1830 *) Support for directoryName in GeneralName related extensions
1834 *) Make it possible to link applications using Makefile.shared.
1835 Make that possible even when linking against static libraries!
1838 *) Support for single pass processing for S/MIME signing. This now
1839 means that S/MIME signing can be done from a pipe, in addition
1840 cleartext signing (multipart/signed type) is effectively streaming
1841 and the signed data does not need to be all held in memory.
1843 This is done with a new flag PKCS7_STREAM. When this flag is set
1844 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1845 is done after the data is output (and digests calculated) in
1846 SMIME_write_PKCS7().
1849 *) Add full support for -rpath/-R, both in shared libraries and
1850 applications, at least on the platforms where it's known how
1854 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1855 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1856 will now compute a table of multiples of the generator that
1857 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1858 faster (notably in the case of a single point multiplication,
1859 scalar * generator).
1860 [Nils Larsch, Bodo Moeller]
1862 *) IPv6 support for certificate extensions. The various extensions
1863 which use the IP:a.b.c.d can now take IPv6 addresses using the
1864 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1868 *) Added an ENGINE that implements RSA by performing private key
1869 exponentiations with the GMP library. The conversions to and from
1870 GMP's mpz_t format aren't optimised nor are any montgomery forms
1871 cached, and on x86 it appears OpenSSL's own performance has caught up.
1872 However there are likely to be other architectures where GMP could
1873 provide a boost. This ENGINE is not built in by default, but it can be
1874 specified at Configure time and should be accompanied by the necessary
1875 linker additions, eg;
1876 ./config -DOPENSSL_USE_GMP -lgmp
1879 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1880 testing availability of engines with "-t" - the old behaviour is
1881 produced by increasing the feature's verbosity with "-tt".
1884 *) ECDSA routines: under certain error conditions uninitialized BN objects
1885 could be freed. Solution: make sure initialization is performed early
1886 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1890 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1891 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1892 software implementations. For DSA and DH, parameter generation can
1893 also be overriden by providing the appropriate method callbacks.
1896 *) Change the "progress" mechanism used in key-generation and
1897 primality testing to functions that take a new BN_GENCB pointer in
1898 place of callback/argument pairs. The new API functions have "_ex"
1899 postfixes and the older functions are reimplemented as wrappers for
1900 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1901 declarations of the old functions to help (graceful) attempts to
1902 migrate to the new functions. Also, the new key-generation API
1903 functions operate on a caller-supplied key-structure and return
1904 success/failure rather than returning a key or NULL - this is to
1905 help make "keygen" another member function of RSA_METHOD etc.
1907 Example for using the new callback interface:
1909 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1913 BN_GENCB_set(&my_cb, my_callback, my_arg);
1915 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1916 /* For the meaning of a, b in calls to my_callback(), see the
1917 * documentation of the function that calls the callback.
1918 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1919 * my_callback should return 1 if it wants BN_is_prime_ex()
1920 * to continue, or 0 to stop.
1925 *) Change the ZLIB compression method to be stateful, and make it
1926 available to TLS with the number defined in
1927 draft-ietf-tls-compression-04.txt.
1930 *) Add the ASN.1 structures and functions for CertificatePair, which
1931 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1933 CertificatePair ::= SEQUENCE {
1934 forward [0] Certificate OPTIONAL,
1935 reverse [1] Certificate OPTIONAL,
1936 -- at least one of the pair shall be present -- }
1938 Also implement the PEM functions to read and write certificate
1939 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1941 This needed to be defined, mostly for the sake of the LDAP
1942 attribute crossCertificatePair, but may prove useful elsewhere as
1946 *) Make it possible to inhibit symlinking of shared libraries in
1947 Makefile.shared, for Cygwin's sake.
1950 *) Extend the BIGNUM API by creating a function
1951 void BN_set_negative(BIGNUM *a, int neg);
1952 and a macro that behave like
1953 int BN_is_negative(const BIGNUM *a);
1955 to avoid the need to access 'a->neg' directly in applications.
1958 *) Implement fast modular reduction for pseudo-Mersenne primes
1959 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1960 EC_GROUP_new_curve_GFp() will now automatically use this
1962 [Nils Larsch <nla@trustcenter.de>]
1964 *) Add new lock type (CRYPTO_LOCK_BN).
1967 *) Change the ENGINE framework to automatically load engines
1968 dynamically from specific directories unless they could be
1969 found to already be built in or loaded. Move all the
1970 current engines except for the cryptodev one to a new
1972 The engines in engines/ are built as shared libraries if
1973 the "shared" options was given to ./Configure or ./config.
1974 Otherwise, they are inserted in libcrypto.a.
1975 /usr/local/ssl/engines is the default directory for dynamic
1976 engines, but that can be overriden at configure time through
1977 the usual use of --prefix and/or --openssldir, and at run
1978 time with the environment variable OPENSSL_ENGINES.
1979 [Geoff Thorpe and Richard Levitte]
1981 *) Add Makefile.shared, a helper makefile to build shared
1982 libraries. Addapt Makefile.org.
1985 *) Add version info to Win32 DLLs.
1986 [Peter 'Luna' Runestig" <peter@runestig.com>]
1988 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1989 can be added using this API to created arbitrary PKCS#12
1990 files while avoiding the low level API.
1992 New options to PKCS12_create(), key or cert can be NULL and
1993 will then be omitted from the output file. The encryption
1994 algorithm NIDs can be set to -1 for no encryption, the mac
1995 iteration count can be set to 0 to omit the mac.
1997 Enhance pkcs12 utility by making the -nokeys and -nocerts
1998 options work when creating a PKCS#12 file. New option -nomac
1999 to omit the mac, NONE can be set for an encryption algorithm.
2000 New code is modified to use the enhanced PKCS12_create()
2001 instead of the low level API.
2004 *) Extend ASN1 encoder to support indefinite length constructed
2005 encoding. This can output sequences tags and octet strings in
2006 this form. Modify pk7_asn1.c to support indefinite length
2007 encoding. This is experimental and needs additional code to
2008 be useful, such as an ASN1 bio and some enhanced streaming
2011 Extend template encode functionality so that tagging is passed
2012 down to the template encoder.
2015 *) Let 'openssl req' fail if an argument to '-newkey' is not
2016 recognized instead of using RSA as a default.
2019 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2020 As these are not official, they are not included in "ALL";
2021 the "ECCdraft" ciphersuite group alias can be used to select them.
2022 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2024 *) Add ECDH engine support.
2025 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2027 *) Add ECDH in new directory crypto/ecdh/.
2028 [Douglas Stebila (Sun Microsystems Laboratories)]
2030 *) Let BN_rand_range() abort with an error after 100 iterations
2031 without success (which indicates a broken PRNG).
2034 *) Change BN_mod_sqrt() so that it verifies that the input value
2035 is really the square of the return value. (Previously,
2036 BN_mod_sqrt would show GIGO behaviour.)
2039 *) Add named elliptic curves over binary fields from X9.62, SECG,
2040 and WAP/WTLS; add OIDs that were still missing.
2042 [Sheueling Chang Shantz and Douglas Stebila
2043 (Sun Microsystems Laboratories)]
2045 *) Extend the EC library for elliptic curves over binary fields
2046 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2049 EC_GF2m_simple_method
2053 EC_GROUP_new_curve_GF2m
2054 EC_GROUP_set_curve_GF2m
2055 EC_GROUP_get_curve_GF2m
2056 EC_POINT_set_affine_coordinates_GF2m
2057 EC_POINT_get_affine_coordinates_GF2m
2058 EC_POINT_set_compressed_coordinates_GF2m
2060 Point compression for binary fields is disabled by default for
2061 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2064 As binary polynomials are represented as BIGNUMs, various members
2065 of the EC_GROUP and EC_POINT data structures can be shared
2066 between the implementations for prime fields and binary fields;
2067 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2068 are essentially identical to their ..._GFp counterparts.
2069 (For simplicity, the '..._GFp' prefix has been dropped from
2070 various internal method names.)
2072 An internal 'field_div' method (similar to 'field_mul' and
2073 'field_sqr') has been added; this is used only for binary fields.
2075 [Sheueling Chang Shantz and Douglas Stebila
2076 (Sun Microsystems Laboratories)]
2078 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2079 through methods ('mul', 'precompute_mult').
2081 The generic implementations (now internally called 'ec_wNAF_mul'
2082 and 'ec_wNAF_precomputed_mult') remain the default if these
2083 methods are undefined.
2085 [Sheueling Chang Shantz and Douglas Stebila
2086 (Sun Microsystems Laboratories)]
2088 *) New function EC_GROUP_get_degree, which is defined through
2089 EC_METHOD. For curves over prime fields, this returns the bit
2090 length of the modulus.
2092 [Sheueling Chang Shantz and Douglas Stebila
2093 (Sun Microsystems Laboratories)]
2095 *) New functions EC_GROUP_dup, EC_POINT_dup.
2096 (These simply call ..._new and ..._copy).
2098 [Sheueling Chang Shantz and Douglas Stebila
2099 (Sun Microsystems Laboratories)]
2101 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2102 Polynomials are represented as BIGNUMs (where the sign bit is not
2103 used) in the following functions [macros]:
2106 BN_GF2m_sub [= BN_GF2m_add]
2107 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2108 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2109 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2111 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2112 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2113 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2114 BN_GF2m_cmp [= BN_ucmp]
2116 (Note that only the 'mod' functions are actually for fields GF(2^m).
2117 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2119 For some functions, an the irreducible polynomial defining a
2120 field can be given as an 'unsigned int[]' with strictly
2121 decreasing elements giving the indices of those bits that are set;
2122 i.e., p[] represents the polynomial
2123 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2125 p[0] > p[1] > ... > p[k] = 0.
2126 This applies to the following functions:
2131 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2132 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2134 BN_GF2m_mod_sqrt_arr
2135 BN_GF2m_mod_solve_quad_arr
2139 Conversion can be performed by the following functions:
2144 bntest.c has additional tests for binary polynomial arithmetic.
2146 Two implementations for BN_GF2m_mod_div() are available.
2147 The default algorithm simply uses BN_GF2m_mod_inv() and
2148 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2149 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2150 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2152 [Sheueling Chang Shantz and Douglas Stebila
2153 (Sun Microsystems Laboratories)]
2155 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2156 functionality is disabled at compile-time.
2157 [Douglas Stebila <douglas.stebila@sun.com>]
2159 *) Change default behaviour of 'openssl asn1parse' so that more
2160 information is visible when viewing, e.g., a certificate:
2162 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2163 mode the content of non-printable OCTET STRINGs is output in a
2164 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2165 avoid the appearance of a printable string.
2166 [Nils Larsch <nla@trustcenter.de>]
2168 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2170 EC_GROUP_set_asn1_flag()
2171 EC_GROUP_get_asn1_flag()
2172 EC_GROUP_set_point_conversion_form()
2173 EC_GROUP_get_point_conversion_form()
2174 These control ASN1 encoding details:
2175 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2176 has been set to OPENSSL_EC_NAMED_CURVE.
2177 - Points are encoded in uncompressed form by default; options for
2178 asn1_for are as for point2oct, namely
2179 POINT_CONVERSION_COMPRESSED
2180 POINT_CONVERSION_UNCOMPRESSED
2181 POINT_CONVERSION_HYBRID
2183 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2186 EC_GROUP_get0_seed()
2187 EC_GROUP_get_seed_len()
2188 This is used only for ASN1 purposes (so far).
2189 [Nils Larsch <nla@trustcenter.de>]
2191 *) Add 'field_type' member to EC_METHOD, which holds the NID
2192 of the appropriate field type OID. The new function
2193 EC_METHOD_get_field_type() returns this value.
2194 [Nils Larsch <nla@trustcenter.de>]
2199 EC_POINT_point2hex()
2200 EC_POINT_hex2point()
2201 providing useful interfaces to EC_POINT_point2oct() and
2202 EC_POINT_oct2point().
2203 [Nils Larsch <nla@trustcenter.de>]
2205 *) Change internals of the EC library so that the functions
2206 EC_GROUP_set_generator()
2207 EC_GROUP_get_generator()
2208 EC_GROUP_get_order()
2209 EC_GROUP_get_cofactor()
2210 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2211 to methods, which would lead to unnecessary code duplication when
2212 adding different types of curves.
2213 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2215 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2216 arithmetic, and such that modified wNAFs are generated
2217 (which avoid length expansion in many cases).
2220 *) Add a function EC_GROUP_check_discriminant() (defined via
2221 EC_METHOD) that verifies that the curve discriminant is non-zero.
2223 Add a function EC_GROUP_check() that makes some sanity tests
2224 on a EC_GROUP, its generator and order. This includes
2225 EC_GROUP_check_discriminant().
2226 [Nils Larsch <nla@trustcenter.de>]
2228 *) Add ECDSA in new directory crypto/ecdsa/.
2230 Add applications 'openssl ecparam' and 'openssl ecdsa'
2231 (these are based on 'openssl dsaparam' and 'openssl dsa').
2233 ECDSA support is also included in various other files across the
2234 library. Most notably,
2235 - 'openssl req' now has a '-newkey ecdsa:file' option;
2236 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2237 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2238 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2239 them suitable for ECDSA where domain parameters must be
2240 extracted before the specific public key;
2241 - ECDSA engine support has been added.
2242 [Nils Larsch <nla@trustcenter.de>]
2244 *) Include some named elliptic curves, and add OIDs from X9.62,
2245 SECG, and WAP/WTLS. Each curve can be obtained from the new
2247 EC_GROUP_new_by_curve_name(),
2248 and the list of available named curves can be obtained with
2249 EC_get_builtin_curves().
2250 Also add a 'curve_name' member to EC_GROUP objects, which can be
2252 EC_GROUP_set_curve_name()
2253 EC_GROUP_get_curve_name()
2254 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2256 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2257 was actually never needed) and in BN_mul(). The removal in BN_mul()
2258 required a small change in bn_mul_part_recursive() and the addition
2259 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2260 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2261 bn_sub_words() and bn_add_words() except they take arrays with
2265 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
2267 *) In the SSL/TLS server implementation, be strict about session ID
2268 context matching (which matters if an application uses a single
2269 external cache for different purposes). Previously,
2270 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2271 set. This did ensure strict client verification, but meant that,
2272 with applications using a single external cache for quite
2273 different requirements, clients could circumvent ciphersuite
2274 restrictions for a given session ID context by starting a session
2275 in a different context.
2278 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2280 *) Cleanse PEM buffers before freeing them since they may contain
2282 [Benjamin Bennett <ben@psc.edu>]
2284 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2285 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2286 authentication-only ciphersuites.
2289 *) Since AES128 and AES256 share a single mask bit in the logic of
2290 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2291 kludge to work properly if AES128 is available and AES256 isn't.
2294 *) Expand security boundary to match 1.1.1 module.
2297 *) Remove redundant features: hash file source, editing of test vectors
2298 modify fipsld to use external fips_premain.c signature.
2301 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2302 run algorithm test programs.
2305 *) Make algorithm test programs more tolerant of whitespace.
2308 *) Have SSL/TLS server implementation tolerate "mismatched" record
2309 protocol version while receiving ClientHello even if the
2310 ClientHello is fragmented. (The server can't insist on the
2311 particular protocol version it has chosen before the ServerHello
2312 message has informed the client about his choice.)
2315 *) Load error codes if they are not already present instead of using a
2316 static variable. This allows them to be cleanly unloaded and reloaded.
2319 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2321 *) Introduce limits to prevent malicious keys being able to
2322 cause a denial of service. (CVE-2006-2940)
2323 [Steve Henson, Bodo Moeller]
2325 *) Fix ASN.1 parsing of certain invalid structures that can result
2326 in a denial of service. (CVE-2006-2937) [Steve Henson]
2328 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2329 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2331 *) Fix SSL client code which could crash if connecting to a
2332 malicious SSLv2 server. (CVE-2006-4343)
2333 [Tavis Ormandy and Will Drewry, Google Security Team]
2335 *) Change ciphersuite string processing so that an explicit
2336 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2337 will no longer include "AES128-SHA"), and any other similar
2338 ciphersuite (same bitmap) from *other* protocol versions (so that
2339 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2340 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2341 changes from 0.9.8b and 0.9.8d.
2344 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2346 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2347 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2349 *) Change the Unix randomness entropy gathering to use poll() when
2350 possible instead of select(), since the latter has some
2351 undesirable limitations.
2352 [Darryl Miles via Richard Levitte and Bodo Moeller]
2354 *) Disable rogue ciphersuites:
2356 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2357 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2358 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2360 The latter two were purportedly from
2361 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2364 Also deactive the remaining ciphersuites from
2365 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2366 unofficial, and the ID has long expired.
2369 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2370 dual-core machines) and other potential thread-safety issues.
2373 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2375 *) Adapt fipsld and the build system to link against the validated FIPS
2376 module in FIPS mode.
2379 *) Fixes for VC++ 2005 build under Windows.
2382 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2383 from a Windows bash shell such as MSYS. It is autodetected from the
2384 "config" script when run from a VC++ environment. Modify standard VC++
2385 build to use fipscanister.o from the GNU make build.
2388 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2390 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2391 The value now differs depending on if you build for FIPS or not.
2392 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2393 safely run with a non-FIPSed libcrypto, as it may crash because of
2394 the difference induced by this change.
2397 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2399 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2400 (part of SSL_OP_ALL). This option used to disable the
2401 countermeasure against man-in-the-middle protocol-version
2402 rollback in the SSL 2.0 server implementation, which is a bad
2403 idea. (CVE-2005-2969)
2405 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2406 for Information Security, National Institute of Advanced Industrial
2407 Science and Technology [AIST], Japan)]
2409 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2410 mainly for FIPS compliance and not fully integrated at this stage.
2413 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2414 the exponentiation using a fixed-length exponent. (Otherwise,
2415 the information leaked through timing could expose the secret key
2416 after many signatures; cf. Bleichenbacher's attack on DSA with
2420 *) Make a new fixed-window mod_exp implementation the default for
2421 RSA, DSA, and DH private-key operations so that the sequence of
2422 squares and multiplies and the memory access pattern are
2423 independent of the particular secret key. This will mitigate
2424 cache-timing and potential related attacks.
2426 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2427 and this is automatically used by BN_mod_exp_mont() if the new flag
2428 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2429 will use this BN flag for private exponents unless the flag
2430 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2431 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2433 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2435 *) Change the client implementation for SSLv23_method() and
2436 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2437 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2438 (Previously, the SSL 2.0 backwards compatible Client Hello
2439 message format would be used even with SSL_OP_NO_SSLv2.)
2442 *) Add support for smime-type MIME parameter in S/MIME messages which some
2446 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2447 a threadsafe manner. Modify rsa code to use new function and add calls
2448 to dsa and dh code (which had race conditions before).
2451 *) Include the fixed error library code in the C error file definitions
2452 instead of fixing them up at runtime. This keeps the error code
2453 structures constant.
2456 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2458 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2461 *) Fixes for newer kerberos headers. NB: the casts are needed because
2462 the 'length' field is signed on one version and unsigned on another
2463 with no (?) obvious way to tell the difference, without these VC++
2464 complains. Also the "definition" of FAR (blank) is no longer included
2465 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2466 some needed definitions.
2469 *) Undo Cygwin change.
2472 *) Added support for proxy certificates according to RFC 3820.
2473 Because they may be a security thread to unaware applications,
2474 they must be explicitely allowed in run-time. See
2475 docs/HOWTO/proxy_certificates.txt for further information.
2478 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2480 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2481 server and client random values. Previously
2482 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2483 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2485 This change has negligible security impact because:
2487 1. Server and client random values still have 24 bytes of pseudo random
2490 2. Server and client random values are sent in the clear in the initial
2493 3. The master secret is derived using the premaster secret (48 bytes in
2494 size for static RSA ciphersuites) as well as client server and random
2497 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2500 [Stephen Henson, reported by UK NISCC]
2502 *) Use Windows randomness collection on Cygwin.
2505 *) Fix hang in EGD/PRNGD query when communication socket is closed
2506 prematurely by EGD/PRNGD.
2507 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2509 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2512 *) Back-port of selected performance improvements from development
2513 branch, as well as improved support for PowerPC platforms.
2516 *) Add lots of checks for memory allocation failure, error codes to indicate
2517 failure and freeing up memory if a failure occurs.
2518 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2520 *) Add new -passin argument to dgst.
2523 *) Perform some character comparisons of different types in X509_NAME_cmp:
2524 this is needed for some certificates that reencode DNs into UTF8Strings
2525 (in violation of RFC3280) and can't or wont issue name rollover
2529 *) Make an explicit check during certificate validation to see that
2530 the CA setting in each certificate on the chain is correct. As a
2531 side effect always do the following basic checks on extensions,
2532 not just when there's an associated purpose to the check:
2534 - if there is an unhandled critical extension (unless the user
2535 has chosen to ignore this fault)
2536 - if the path length has been exceeded (if one is set at all)
2537 - that certain extensions fit the associated purpose (if one has
2541 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2543 *) Avoid a race condition when CRLs are checked in a multi threaded
2544 environment. This would happen due to the reordering of the revoked
2545 entries during signature checking and serial number lookup. Now the
2546 encoding is cached and the serial number sort performed under a lock.
2547 Add new STACK function sk_is_sorted().
2550 *) Add Delta CRL to the extension code.
2553 *) Various fixes to s3_pkt.c so alerts are sent properly.
2554 [David Holmes <d.holmes@f5.com>]
2556 *) Reduce the chances of duplicate issuer name and serial numbers (in
2557 violation of RFC3280) using the OpenSSL certificate creation utilities.
2558 This is done by creating a random 64 bit value for the initial serial
2559 number when a serial number file is created or when a self signed
2560 certificate is created using 'openssl req -x509'. The initial serial
2561 number file is created using 'openssl x509 -next_serial' in CA.pl
2562 rather than being initialized to 1.
2565 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2567 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2568 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2569 [Joe Orton, Steve Henson]
2571 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2573 [Joe Orton, Steve Henson]
2575 *) Make it possible to have multiple active certificates with the same
2576 subject in the CA index file. This is done only if the keyword
2577 'unique_subject' is set to 'no' in the main CA section (default
2578 if 'CA_default') of the configuration file. The value is saved
2579 with the database itself in a separate index attribute file,
2580 named like the index file with '.attr' appended to the name.
2583 *) X509 verify fixes. Disable broken certificate workarounds when
2584 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2585 keyUsage extension present. Don't accept CRLs with unhandled critical
2586 extensions: since verify currently doesn't process CRL extensions this
2587 rejects a CRL with *any* critical extensions. Add new verify error codes
2591 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2592 A clarification of RFC2560 will require the use of OCTET STRINGs and
2593 some implementations cannot handle the current raw format. Since OpenSSL
2594 copies and compares OCSP nonces as opaque blobs without any attempt at
2595 parsing them this should not create any compatibility issues.
2598 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2599 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2600 this HMAC (and other) operations are several times slower than OpenSSL
2604 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2605 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2607 *) Use the correct content when signing type "other".
2610 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2612 *) Fix various bugs revealed by running the NISCC test suite:
2614 Stop out of bounds reads in the ASN1 code when presented with
2615 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2617 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2619 If verify callback ignores invalid public key errors don't try to check
2620 certificate signature with the NULL public key.
2624 *) New -ignore_err option in ocsp application to stop the server
2625 exiting on the first error in a request.
2628 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2629 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2633 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2634 extra data after the compression methods not only for TLS 1.0
2635 but also for SSL 3.0 (as required by the specification).
2636 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2638 *) Change X509_certificate_type() to mark the key as exported/exportable
2639 when it's 512 *bits* long, not 512 bytes.
2642 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2643 blocks during encryption.
2646 *) Various fixes to base64 BIO and non blocking I/O. On write
2647 flushes were not handled properly if the BIO retried. On read
2648 data was not being buffered properly and had various logic bugs.
2649 This also affects blocking I/O when the data being decoded is a
2653 *) Various S/MIME bugfixes and compatibility changes:
2654 output correct application/pkcs7 MIME type if
2655 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2656 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2657 of files as .eml work). Correctly handle very long lines in MIME
2661 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2663 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2664 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2665 a protocol version number mismatch like a decryption error
2666 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2669 *) Turn on RSA blinding by default in the default implementation
2670 to avoid a timing attack. Applications that don't want it can call
2671 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2672 They would be ill-advised to do so in most cases.
2673 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2675 *) Change RSA blinding code so that it works when the PRNG is not
2676 seeded (in this case, the secret RSA exponent is abused as
2677 an unpredictable seed -- if it is not unpredictable, there
2678 is no point in blinding anyway). Make RSA blinding thread-safe
2679 by remembering the creator's thread ID in rsa->blinding and
2680 having all other threads use local one-time blinding factors
2681 (this requires more computation than sharing rsa->blinding, but
2682 avoids excessive locking; and if an RSA object is not shared
2683 between threads, blinding will still be very fast).
2686 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2687 ENGINE as defaults for all supported algorithms irrespective of
2688 the 'flags' parameter. 'flags' is now honoured, so applications
2689 should make sure they are passing it correctly.
2692 *) Target "mingw" now allows native Windows code to be generated in
2693 the Cygwin environment as well as with the MinGW compiler.
2696 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2698 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2699 via timing by performing a MAC computation even if incorrrect
2700 block cipher padding has been found. This is a countermeasure
2701 against active attacks where the attacker has to distinguish
2702 between bad padding and a MAC verification error. (CVE-2003-0078)
2704 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2705 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2706 Martin Vuagnoux (EPFL, Ilion)]
2708 *) Make the no-err option work as intended. The intention with no-err
2709 is not to have the whole error stack handling routines removed from
2710 libcrypto, it's only intended to remove all the function name and
2711 reason texts, thereby removing some of the footprint that may not
2712 be interesting if those errors aren't displayed anyway.
2714 NOTE: it's still possible for any application or module to have it's
2715 own set of error texts inserted. The routines are there, just not
2716 used by default when no-err is given.
2719 *) Add support for FreeBSD on IA64.
2720 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2722 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2723 Kerberos function mit_des_cbc_cksum(). Before this change,
2724 the value returned by DES_cbc_cksum() was like the one from
2725 mit_des_cbc_cksum(), except the bytes were swapped.
2726 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2728 *) Allow an application to disable the automatic SSL chain building.
2729 Before this a rather primitive chain build was always performed in
2730 ssl3_output_cert_chain(): an application had no way to send the
2731 correct chain if the automatic operation produced an incorrect result.
2733 Now the chain builder is disabled if either:
2735 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2737 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2739 The reasoning behind this is that an application would not want the
2740 auto chain building to take place if extra chain certificates are
2741 present and it might also want a means of sending no additional
2742 certificates (for example the chain has two certificates and the
2746 *) Add the possibility to build without the ENGINE framework.
2747 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2749 *) Under Win32 gmtime() can return NULL: check return value in
2750 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2753 *) DSA routines: under certain error conditions uninitialized BN objects
2754 could be freed. Solution: make sure initialization is performed early
2755 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2756 Nils Larsch <nla@trustcenter.de> via PR#459)
2759 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2760 checked on reconnect on the client side, therefore session resumption
2761 could still fail with a "ssl session id is different" error. This
2762 behaviour is masked when SSL_OP_ALL is used due to
2763 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2764 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2765 followup to PR #377.
2768 *) IA-32 assembler support enhancements: unified ELF targets, support
2769 for SCO/Caldera platforms, fix for Cygwin shared build.
2772 *) Add support for FreeBSD on sparc64. As a consequence, support for
2773 FreeBSD on non-x86 processors is separate from x86 processors on
2774 the config script, much like the NetBSD support.
2775 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2777 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2779 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2782 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2783 code (06) was taken as the first octet of the session ID and the last
2784 octet was ignored consequently. As a result SSLv2 client side session
2785 caching could not have worked due to the session ID mismatch between
2787 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2791 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2792 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2796 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2797 seems that in spite of existing for more than a year, many application
2798 author have done nothing to provide the necessary callbacks, which
2799 means that this particular engine will not work properly anywhere.
2800 This is a very unfortunate situation which forces us, in the name
2801 of usability, to give the hw_ncipher.c a static lock, which is part
2803 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2804 appear in 0.9.8 or later. We EXPECT application authors to have
2805 dealt properly with this when 0.9.8 is released (unless we actually
2806 make such changes in the libcrypto locking code that changes will
2807 have to be made anyway).
2810 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2811 octets have been read, EOF or an error occurs. Without this change
2812 some truncated ASN1 structures will not produce an error.
2815 *) Disable Heimdal support, since it hasn't been fully implemented.
2816 Still give the possibility to force the use of Heimdal, but with
2817 warnings and a request that patches get sent to openssl-dev.
2820 *) Add the VC-CE target, introduce the WINCE sysname, and add
2821 INSTALL.WCE and appropriate conditionals to make it build.
2822 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2824 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2825 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2826 edit numbers of the version.
2827 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2829 *) Introduce safe string copy and catenation functions
2830 (BUF_strlcpy() and BUF_strlcat()).
2831 [Ben Laurie (CHATS) and Richard Levitte]
2833 *) Avoid using fixed-size buffers for one-line DNs.
2834 [Ben Laurie (CHATS)]
2836 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2837 resizing buffers containing secrets, and use where appropriate.
2838 [Ben Laurie (CHATS)]
2840 *) Avoid using fixed size buffers for configuration file location.
2841 [Ben Laurie (CHATS)]
2843 *) Avoid filename truncation for various CA files.
2844 [Ben Laurie (CHATS)]
2846 *) Use sizeof in preference to magic numbers.
2847 [Ben Laurie (CHATS)]
2849 *) Avoid filename truncation in cert requests.
2850 [Ben Laurie (CHATS)]
2852 *) Add assertions to check for (supposedly impossible) buffer
2854 [Ben Laurie (CHATS)]
2856 *) Don't cache truncated DNS entries in the local cache (this could
2857 potentially lead to a spoofing attack).
2858 [Ben Laurie (CHATS)]
2860 *) Fix various buffers to be large enough for hex/decimal
2861 representations in a platform independent manner.
2862 [Ben Laurie (CHATS)]
2864 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2865 resizing buffers containing secrets, and use where appropriate.
2866 [Ben Laurie (CHATS)]
2868 *) Add BIO_indent() to avoid much slightly worrying code to do
2870 [Ben Laurie (CHATS)]
2872 *) Convert sprintf()/BIO_puts() to BIO_printf().
2873 [Ben Laurie (CHATS)]
2875 *) buffer_gets() could terminate with the buffer only half
2877 [Ben Laurie (CHATS)]
2879 *) Add assertions to prevent user-supplied crypto functions from
2880 overflowing internal buffers by having large block sizes, etc.
2881 [Ben Laurie (CHATS)]
2883 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2885 [Ben Laurie (CHATS)]
2887 *) Eliminate unused copy of key in RC4.
2888 [Ben Laurie (CHATS)]
2890 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2891 [Ben Laurie (CHATS)]
2893 *) Fix off-by-one error in EGD path.
2894 [Ben Laurie (CHATS)]
2896 *) If RANDFILE path is too long, ignore instead of truncating.
2897 [Ben Laurie (CHATS)]
2899 *) Eliminate unused and incorrectly sized X.509 structure
2901 [Ben Laurie (CHATS)]
2903 *) Eliminate unused and dangerous function knumber().
2904 [Ben Laurie (CHATS)]
2906 *) Eliminate unused and dangerous structure, KSSL_ERR.
2907 [Ben Laurie (CHATS)]
2909 *) Protect against overlong session ID context length in an encoded
2910 session object. Since these are local, this does not appear to be
2912 [Ben Laurie (CHATS)]
2914 *) Change from security patch (see 0.9.6e below) that did not affect
2915 the 0.9.6 release series:
2917 Remote buffer overflow in SSL3 protocol - an attacker could
2918 supply an oversized master key in Kerberos-enabled versions.
2920 [Ben Laurie (CHATS)]
2922 *) Change the SSL kerb5 codes to match RFC 2712.
2925 *) Make -nameopt work fully for req and add -reqopt switch.
2926 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2928 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2929 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2931 *) Make sure tests can be performed even if the corresponding algorithms
2932 have been removed entirely. This was also the last step to make
2933 OpenSSL compilable with DJGPP under all reasonable conditions.
2934 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2936 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2937 to allow version independent disabling of normally unselected ciphers,
2938 which may be activated as a side-effect of selecting a single cipher.
2940 (E.g., cipher list string "RSA" enables ciphersuites that are left
2941 out of "ALL" because they do not provide symmetric encryption.
2942 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2943 [Lutz Jaenicke, Bodo Moeller]
2945 *) Add appropriate support for separate platform-dependent build
2946 directories. The recommended way to make a platform-dependent
2947 build directory is the following (tested on Linux), maybe with
2950 # Place yourself outside of the OpenSSL source tree. In
2951 # this example, the environment variable OPENSSL_SOURCE
2952 # is assumed to contain the absolute OpenSSL source directory.
2953 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2954 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2955 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2956 mkdir -p `dirname $F`
2957 ln -s $OPENSSL_SOURCE/$F $F
2960 To be absolutely sure not to disturb the source tree, a "make clean"
2961 is a good thing. If it isn't successfull, don't worry about it,
2962 it probably means the source directory is very clean.
2965 *) Make sure any ENGINE control commands make local copies of string
2966 pointers passed to them whenever necessary. Otherwise it is possible
2967 the caller may have overwritten (or deallocated) the original string
2968 data when a later ENGINE operation tries to use the stored values.
2969 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2971 *) Improve diagnostics in file reading and command-line digests.
2972 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2974 *) Add AES modes CFB and OFB to the object database. Correct an
2975 error in AES-CFB decryption.
2978 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2979 allows existing EVP_CIPHER_CTX structures to be reused after
2980 calling EVP_*Final(). This behaviour is used by encryption
2981 BIOs and some applications. This has the side effect that
2982 applications must explicitly clean up cipher contexts with
2983 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2986 *) Check the values of dna and dnb in bn_mul_recursive before calling
2987 bn_mul_comba (a non zero value means the a or b arrays do not contain
2988 n2 elements) and fallback to bn_mul_normal if either is not zero.
2991 *) Fix escaping of non-ASCII characters when using the -subj option
2992 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2995 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2996 form for "surname", serialNumber has no short form.
2997 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2998 therefore remove "mail" short name for "internet 7".
2999 The OID for unique identifiers in X509 certificates is
3000 x500UniqueIdentifier, not uniqueIdentifier.
3001 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3004 *) Add an "init" command to the ENGINE config module and auto initialize
3005 ENGINEs. Without any "init" command the ENGINE will be initialized
3006 after all ctrl commands have been executed on it. If init=1 the
3007 ENGINE is initailized at that point (ctrls before that point are run
3008 on the uninitialized ENGINE and after on the initialized one). If
3009 init=0 then the ENGINE will not be iniatialized at all.
3012 *) Fix the 'app_verify_callback' interface so that the user-defined
3013 argument is actually passed to the callback: In the
3014 SSL_CTX_set_cert_verify_callback() prototype, the callback
3015 declaration has been changed from
3018 int (*cb)(X509_STORE_CTX *,void *);
3019 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3020 i=s->ctx->app_verify_callback(&ctx)
3021 has been changed into
3022 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3024 To update applications using SSL_CTX_set_cert_verify_callback(),
3025 a dummy argument can be added to their callback functions.
3026 [D. K. Smetters <smetters@parc.xerox.com>]
3028 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3029 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3031 *) Add and OPENSSL_LOAD_CONF define which will cause
3032 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3033 This allows older applications to transparently support certain
3034 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3035 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3036 load the config file and OPENSSL_add_all_algorithms_conf() which will
3037 always load it have also been added.
3040 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3041 Adjust NIDs and EVP layer.
3042 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3044 *) Config modules support in openssl utility.
3046 Most commands now load modules from the config file,
3047 though in a few (such as version) this isn't done
3048 because it couldn't be used for anything.
3050 In the case of ca and req the config file used is
3051 the same as the utility itself: that is the -config
3052 command line option can be used to specify an
3056 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3057 use "openssl_conf" if filename is NULL use default openssl config file.
3060 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3061 config section name. Add a new flag to tolerate a missing config file
3062 and move code to CONF_modules_load_file().
3065 *) Support for crypto accelerator cards from Accelerated Encryption
3066 Processing, www.aep.ie. (Use engine 'aep')
3067 The support was copied from 0.9.6c [engine] and adapted/corrected
3068 to work with the new engine framework.
3069 [AEP Inc. and Richard Levitte]
3071 *) Support for SureWare crypto accelerator cards from Baltimore
3072 Technologies. (Use engine 'sureware')
3073 The support was copied from 0.9.6c [engine] and adapted
3074 to work with the new engine framework.
3077 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3078 make the newer ENGINE framework commands for the CHIL engine work.
3079 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3081 *) Make it possible to produce shared libraries on ReliantUNIX.
3082 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3084 *) Add the configuration target debug-linux-ppro.
3085 Make 'openssl rsa' use the general key loading routines
3086 implemented in apps.c, and make those routines able to
3087 handle the key format FORMAT_NETSCAPE and the variant
3089 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3091 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3092 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3094 *) Add -keyform to rsautl, and document -engine.
3095 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3097 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3098 BIO_R_NO_SUCH_FILE error code rather than the generic
3099 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3102 *) Add new functions
3104 ERR_peek_last_error_line
3105 ERR_peek_last_error_line_data.
3106 These are similar to
3109 ERR_peek_error_line_data,
3110 but report on the latest error recorded rather than the first one
3111 still in the error queue.
3112 [Ben Laurie, Bodo Moeller]
3114 *) default_algorithms option in ENGINE config module. This allows things
3116 default_algorithms = ALL
3117 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3120 *) Prelminary ENGINE config module.
3123 *) New experimental application configuration code.
3126 *) Change the AES code to follow the same name structure as all other
3127 symmetric ciphers, and behave the same way. Move everything to
3128 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3129 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3131 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3132 [Ben Laurie and Theo de Raadt]
3134 *) Add option to output public keys in req command.
3135 [Massimiliano Pala madwolf@openca.org]
3137 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3138 (up to about 10% better than before for P-192 and P-224).
3141 *) New functions/macros
3143 SSL_CTX_set_msg_callback(ctx, cb)
3144 SSL_CTX_set_msg_callback_arg(ctx, arg)
3145 SSL_set_msg_callback(ssl, cb)
3146 SSL_set_msg_callback_arg(ssl, arg)
3148 to request calling a callback function
3150 void cb(int write_p, int version, int content_type,
3151 const void *buf, size_t len, SSL *ssl, void *arg)
3153 whenever a protocol message has been completely received
3154 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3155 protocol version according to which the SSL library interprets
3156 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3157 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3158 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3159 specification (change_cipher_spec(20), alert(21), handshake(22)).
3160 'buf' and 'len' point to the actual message, 'ssl' to the
3161 SSL object, and 'arg' is the application-defined value set by
3162 SSL[_CTX]_set_msg_callback_arg().
3164 'openssl s_client' and 'openssl s_server' have new '-msg' options
3165 to enable a callback that displays all protocol messages.
3168 *) Change the shared library support so shared libraries are built as
3169 soon as the corresponding static library is finished, and thereby get
3170 openssl and the test programs linked against the shared library.
3171 This still only happens when the keyword "shard" has been given to
3172 the configuration scripts.
3174 NOTE: shared library support is still an experimental thing, and
3175 backward binary compatibility is still not guaranteed.
3176 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3178 *) Add support for Subject Information Access extension.
3179 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3181 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3182 additional bytes when new memory had to be allocated, not just
3183 when reusing an existing buffer.
3186 *) New command line and configuration option 'utf8' for the req command.
3187 This allows field values to be specified as UTF8 strings.
3190 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3191 runs for the former and machine-readable output for the latter.
3194 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3195 of the e-mail address in the DN (i.e., it will go into a certificate
3196 extension only). The new configuration file option 'email_in_dn = no'
3197 has the same effect.
3198 [Massimiliano Pala madwolf@openca.org]
3200 *) Change all functions with names starting with des_ to be starting
3201 with DES_ instead. Add wrappers that are compatible with libdes,
3202 but are named _ossl_old_des_*. Finally, add macros that map the
3203 des_* symbols to the corresponding _ossl_old_des_* if libdes
3204 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3205 desired, the des_* symbols will be mapped to DES_*, with one
3208 Since we provide two compatibility mappings, the user needs to
3209 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3210 compatibility is desired. The default (i.e., when that macro
3211 isn't defined) is OpenSSL 0.9.6c compatibility.
3213 There are also macros that enable and disable the support of old
3214 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3215 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3216 are defined, the default will apply: to support the old des routines.
3218 In either case, one must include openssl/des.h to get the correct
3219 definitions. Do not try to just include openssl/des_old.h, that
3222 NOTE: This is a major break of an old API into a new one. Software
3223 authors are encouraged to switch to the DES_ style functions. Some
3224 time in the future, des_old.h and the libdes compatibility functions
3225 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3226 default), and then completely removed.
3229 *) Test for certificates which contain unsupported critical extensions.
3230 If such a certificate is found during a verify operation it is
3231 rejected by default: this behaviour can be overridden by either
3232 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3233 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3234 X509_supported_extension() has also been added which returns 1 if a
3235 particular extension is supported.
3238 *) Modify the behaviour of EVP cipher functions in similar way to digests
3239 to retain compatibility with existing code.
3242 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3243 compatibility with existing code. In particular the 'ctx' parameter does
3244 not have to be to be initialized before the call to EVP_DigestInit() and
3245 it is tidied up after a call to EVP_DigestFinal(). New function
3246 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3247 EVP_MD_CTX_copy() changed to not require the destination to be
3248 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3249 requires the destination to be valid.
3251 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3252 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3255 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3256 so that complete 'Handshake' protocol structures are kept in memory
3257 instead of overwriting 'msg_type' and 'length' with 'body' data.
3260 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3261 [Massimo Santin via Richard Levitte]
3263 *) Major restructuring to the underlying ENGINE code. This includes
3264 reduction of linker bloat, separation of pure "ENGINE" manipulation
3265 (initialisation, etc) from functionality dealing with implementations
3266 of specific crypto iterfaces. This change also introduces integrated
3267 support for symmetric ciphers and digest implementations - so ENGINEs
3268 can now accelerate these by providing EVP_CIPHER and EVP_MD
3269 implementations of their own. This is detailed in crypto/engine/README
3270 as it couldn't be adequately described here. However, there are a few
3271 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3272 were changed in the original introduction of ENGINE code have now
3273 reverted back - the hooking from this code to ENGINE is now a good
3274 deal more passive and at run-time, operations deal directly with
3275 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3276 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3277 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3278 they were not being used by the framework as there is no concept of a
3279 BIGNUM_METHOD and they could not be generalised to the new
3280 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3281 ENGINE_cpy() has been removed as it cannot be consistently defined in
3285 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3288 *) Change mkdef.pl to sort symbols that get the same entry number,
3289 and make sure the automatically generated functions ERR_load_*
3290 become part of libeay.num as well.
3293 *) New function SSL_renegotiate_pending(). This returns true once
3294 renegotiation has been requested (either SSL_renegotiate() call
3295 or HelloRequest/ClientHello receveived from the peer) and becomes
3296 false once a handshake has been completed.
3297 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3298 sends a HelloRequest, but does not ensure that a handshake takes
3299 place. SSL_renegotiate_pending() is useful for checking if the
3300 client has followed the request.)
3303 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3304 By default, clients may request session resumption even during
3305 renegotiation (if session ID contexts permit); with this option,
3306 session resumption is possible only in the first handshake.
3308 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3309 more bits available for options that should not be part of
3310 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3313 *) Add some demos for certificate and certificate request creation.
3316 *) Make maximum certificate chain size accepted from the peer application
3317 settable (SSL*_get/set_max_cert_list()), as proposed by
3318 "Douglas E. Engert" <deengert@anl.gov>.
3321 *) Add support for shared libraries for Unixware-7
3322 (Boyd Lynn Gerber <gerberb@zenez.com>).
3325 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3326 be done prior to destruction. Use this to unload error strings from
3327 ENGINEs that load their own error strings. NB: This adds two new API
3328 functions to "get" and "set" this destroy handler in an ENGINE.
3331 *) Alter all existing ENGINE implementations (except "openssl" and
3332 "openbsd") to dynamically instantiate their own error strings. This
3333 makes them more flexible to be built both as statically-linked ENGINEs
3334 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3335 Also, add stub code to each that makes building them as self-contained
3336 shared-libraries easier (see README.ENGINE).
3339 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3340 implementations into applications that are completely implemented in
3341 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3342 commands that can be used to configure what shared-library to load and
3343 to control aspects of the way it is handled. Also, made an update to
3344 the README.ENGINE file that brings its information up-to-date and
3345 provides some information and instructions on the "dynamic" ENGINE
3346 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3349 *) Make it possible to unload ranges of ERR strings with a new
3350 "ERR_unload_strings" function.
3353 *) Add a copy() function to EVP_MD.
3356 *) Make EVP_MD routines take a context pointer instead of just the
3357 md_data void pointer.
3360 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3361 that the digest can only process a single chunk of data
3362 (typically because it is provided by a piece of
3363 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3364 is only going to provide a single chunk of data, and hence the
3365 framework needn't accumulate the data for oneshot drivers.
3368 *) As with "ERR", make it possible to replace the underlying "ex_data"
3369 functions. This change also alters the storage and management of global
3370 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3371 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3372 index counters. The API functions that use this state have been changed
3373 to take a "class_index" rather than pointers to the class's local STACK
3374 and counter, and there is now an API function to dynamically create new
3375 classes. This centralisation allows us to (a) plug a lot of the
3376 thread-safety problems that existed, and (b) makes it possible to clean
3377 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3378 such data would previously have always leaked in application code and
3379 workarounds were in place to make the memory debugging turn a blind eye
3380 to it. Application code that doesn't use this new function will still
3381 leak as before, but their memory debugging output will announce it now
3382 rather than letting it slide.
3384 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3385 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3386 has a return value to indicate success or failure.
3389 *) Make it possible to replace the underlying "ERR" functions such that the
3390 global state (2 LHASH tables and 2 locks) is only used by the "default"
3391 implementation. This change also adds two functions to "get" and "set"
3392 the implementation prior to it being automatically set the first time
3393 any other ERR function takes place. Ie. an application can call "get",
3394 pass the return value to a module it has just loaded, and that module
3395 can call its own "set" function using that value. This means the
3396 module's "ERR" operations will use (and modify) the error state in the
3397 application and not in its own statically linked copy of OpenSSL code.
3400 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3401 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3402 the operation, and provides a more encapsulated way for external code
3403 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3404 to use these functions rather than manually incrementing the counts.
3406 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3409 *) Add EVP test program.
3412 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3415 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3416 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3417 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3418 These allow a CRL to be built without having to access X509_CRL fields
3419 directly. Modify 'ca' application to use new functions.
3422 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3423 bug workarounds. Rollback attack detection is a security feature.
3424 The problem will only arise on OpenSSL servers when TLSv1 is not
3425 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3426 Software authors not wanting to support TLSv1 will have special reasons
3427 for their choice and can explicitly enable this option.
3428 [Bodo Moeller, Lutz Jaenicke]
3430 *) Rationalise EVP so it can be extended: don't include a union of
3431 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3432 (similar to those existing for EVP_CIPHER_CTX).
3437 EVP_MD_CTX_init(&md); /* new function call */
3438 EVP_DigestInit(&md, EVP_sha1());
3439 EVP_DigestUpdate(&md, in, len);
3440 EVP_DigestFinal(&md, out, NULL);
3441 EVP_MD_CTX_cleanup(&md); /* new function call */
3445 *) Make DES key schedule conform to the usual scheme, as well as
3446 correcting its structure. This means that calls to DES functions
3447 now have to pass a pointer to a des_key_schedule instead of a
3448 plain des_key_schedule (which was actually always a pointer
3451 des_key_schedule ks;
3453 des_set_key_checked(..., &ks);
3454 des_ncbc_encrypt(..., &ks, ...);
3456 (Note that a later change renames 'des_...' into 'DES_...'.)
3459 *) Initial reduction of linker bloat: the use of some functions, such as
3460 PEM causes large amounts of unused functions to be linked in due to
3461 poor organisation. For example pem_all.c contains every PEM function
3462 which has a knock on effect of linking in large amounts of (unused)
3463 ASN1 code. Grouping together similar functions and splitting unrelated
3464 functions prevents this.
3467 *) Cleanup of EVP macros.
3470 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3471 correct _ecb suffix.
3474 *) Add initial OCSP responder support to ocsp application. The
3475 revocation information is handled using the text based index
3476 use by the ca application. The responder can either handle
3477 requests generated internally, supplied in files (for example
3478 via a CGI script) or using an internal minimal server.
3481 *) Add configuration choices to get zlib compression for TLS.
3484 *) Changes to Kerberos SSL for RFC 2712 compliance:
3485 1. Implemented real KerberosWrapper, instead of just using
3486 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3487 2. Implemented optional authenticator field of KerberosWrapper.
3489 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3490 and authenticator structs; see crypto/krb5/.
3492 Generalized Kerberos calls to support multiple Kerberos libraries.
3493 [Vern Staats <staatsvr@asc.hpc.mil>,
3494 Jeffrey Altman <jaltman@columbia.edu>
3495 via Richard Levitte]
3497 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3498 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3499 values for each of the key sizes rather than having just
3500 parameters (and 'speed' generating keys each time).
3503 *) Speed up EVP routines.
3506 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3507 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3508 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3509 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3511 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3512 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3513 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3516 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3518 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3521 *) Added the OS2-EMX target.
3522 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3524 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3525 to support NCONF routines in extension code. New function CONF_set_nconf()
3526 to allow functions which take an NCONF to also handle the old LHASH
3527 structure: this means that the old CONF compatible routines can be
3528 retained (in particular wrt extensions) without having to duplicate the
3529 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3532 *) Enhance the general user interface with mechanisms for inner control
3533 and with possibilities to have yes/no kind of prompts.
3536 *) Change all calls to low level digest routines in the library and
3537 applications to use EVP. Add missing calls to HMAC_cleanup() and
3538 don't assume HMAC_CTX can be copied using memcpy().
3539 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3541 *) Add the possibility to control engines through control names but with
3542 arbitrary arguments instead of just a string.
3543 Change the key loaders to take a UI_METHOD instead of a callback
3544 function pointer. NOTE: this breaks binary compatibility with earlier
3545 versions of OpenSSL [engine].
3546 Adapt the nCipher code for these new conditions and add a card insertion
3550 *) Enhance the general user interface with mechanisms to better support
3551 dialog box interfaces, application-defined prompts, the possibility
3552 to use defaults (for example default passwords from somewhere else)
3553 and interrupts/cancellations.
3556 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3557 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3560 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3561 tidy up some unnecessarily weird code in 'sk_new()').
3562 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3564 *) Change the key loading routines for ENGINEs to use the same kind
3565 callback (pem_password_cb) as all other routines that need this
3569 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3570 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3571 than this minimum value is recommended.
3574 *) New random seeder for OpenVMS, using the system process statistics
3575 that are easily reachable.
3578 *) Windows apparently can't transparently handle global
3579 variables defined in DLLs. Initialisations such as:
3581 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3583 wont compile. This is used by the any applications that need to
3584 declare their own ASN1 modules. This was fixed by adding the option
3585 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3586 needed for static libraries under Win32.
3589 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3590 setting of purpose and trust fields. New X509_STORE trust and
3591 purpose functions and tidy up setting in other SSL functions.
3594 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3595 structure. These are inherited by X509_STORE_CTX when it is
3596 initialised. This allows various defaults to be set in the
3597 X509_STORE structure (such as flags for CRL checking and custom
3598 purpose or trust settings) for functions which only use X509_STORE_CTX
3599 internally such as S/MIME.
3601 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3602 trust settings if they are not set in X509_STORE. This allows X509_STORE
3603 purposes and trust (in S/MIME for example) to override any set by default.
3605 Add command line options for CRL checking to smime, s_client and s_server
3609 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3610 are set then the CRL is looked up in the X509_STORE structure and
3611 its validity and signature checked, then if the certificate is found
3612 in the CRL the verify fails with a revoked error.
projects / openssl.git / blob