5 Changes between 0.9.8k and 0.9.9 [xx XXX xxxx]
7 *) Update Gost ENGINE to support parameter files.
8 [Victor B. Wagner <vitus@cryptocom.ru>]
10 *) Support GeneralizedTime in ca utility.
11 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
13 *) Enhance the hash format used for certificate directory links. The new
14 form uses the canonical encoding (meaning equivalent names will work
15 even if they aren't identical) and uses SHA1 instead of MD5. This form
16 is incompatible with the older format and as a result c_rehash should
17 be used to rebuild symbolic links.
20 *) Make PKCS#8 the default write format for private keys, replacing the
21 traditional format. This form is standardised, more secure and doesn't
22 include an implicit MD5 dependency.
25 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
26 committed to OpenSSL should pass this lot as a minimum.
29 *) Add session ticket override functionality for use by EAP-FAST.
30 [Jouni Malinen <j@w1.fi>]
32 *) Modify HMAC functions to return a value. Since these can be implemented
33 in an ENGINE errors can occur.
36 *) Type-checked OBJ_bsearch_ex.
39 *) Type-checked OBJ_bsearch. Also some constification necessitated
40 by type-checking. Still to come: TXT_DB, bsearch(?),
41 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
45 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
46 seconds to a tm structure directly, instead of going through OS
47 specific date routines. This avoids any issues with OS routines such
48 as the year 2038 bug. New *_adj() functions for ASN1 time structures
49 and X509_time_adj_ex() to cover the extended range. The existing
50 X509_time_adj() is still usable and will no longer have any date issues.
53 *) Delta CRL support. New use deltas option which will attempt to locate
54 and search any appropriate delta CRLs available.
56 This work was sponsored by Google.
59 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
60 code and add additional score elements. Validate alternate CRL paths
61 as part of the CRL checking and indicate a new error "CRL path validation
62 error" in this case. Applications wanting additional details can use
63 the verify callback and check the new "parent" field. If this is not
64 NULL CRL path validation is taking place. Existing applications wont
65 see this because it requires extended CRL support which is off by
68 This work was sponsored by Google.
71 *) Support for freshest CRL extension.
73 This work was sponsored by Google.
76 *) Initial indirect CRL support. Currently only supported in the CRLs
77 passed directly and not via lookup. Process certificate issuer
78 CRL entry extension and lookup CRL entries by bother issuer name
79 and serial number. Check and process CRL issuer entry in IDP extension.
81 This work was sponsored by Google.
84 *) Add support for distinct certificate and CRL paths. The CRL issuer
85 certificate is validated separately in this case. Only enabled if
86 an extended CRL support flag is set: this flag will enable additional
87 CRL functionality in future.
89 This work was sponsored by Google.
92 *) Add support for policy mappings extension.
94 This work was sponsored by Google.
97 *) Fixes to pathlength constraint, self issued certificate handling,
98 policy processing to align with RFC3280 and PKITS tests.
100 This work was sponsored by Google.
103 *) Support for name constraints certificate extension. DN, email, DNS
104 and URI types are currently supported.
106 This work was sponsored by Google.
109 *) To cater for systems that provide a pointer-based thread ID rather
110 than numeric, deprecate the current numeric thread ID mechanism and
111 replace it with a structure and associated callback type. This
112 mechanism allows a numeric "hash" to be extracted from a thread ID in
113 either case, and on platforms where pointers are larger than 'long',
114 mixing is done to help ensure the numeric 'hash' is usable even if it
115 can't be guaranteed unique. The default mechanism is to use "&errno"
116 as a pointer-based thread ID to distinguish between threads.
118 Applications that want to provide their own thread IDs should now use
119 CRYPTO_THREADID_set_callback() to register a callback that will call
120 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
122 Note that ERR_remove_state() is now deprecated, because it is tied
123 to the assumption that thread IDs are numeric. ERR_remove_state(0)
124 to free the current thread's error state should be replaced by
125 ERR_remove_thread_state(NULL).
127 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
128 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
129 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
130 application was previously providing a numeric thread callback that
131 was inappropriate for distinguishing threads, then uniqueness might
132 have been obtained with &errno that happened immediately in the
133 intermediate development versions of OpenSSL; this is no longer the
134 case, the numeric thread callback will now override the automatic use
136 [Geoff Thorpe, with help from Bodo Moeller]
138 *) Initial support for different CRL issuing certificates. This covers a
139 simple case where the self issued certificates in the chain exist and
140 the real CRL issuer is higher in the existing chain.
142 This work was sponsored by Google.
145 *) Removed effectively defunct crypto/store from the build.
148 *) Revamp of STACK to provide stronger type-checking. Still to come:
149 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
150 ASN1_STRING, CONF_VALUE.
153 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
154 RAM on SSL connections. This option can save about 34k per idle SSL.
157 *) Revamp of LHASH to provide stronger type-checking. Still to come:
158 STACK, TXT_DB, bsearch, qsort.
161 *) Initial support for Cryptographic Message Syntax (aka CMS) based
162 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
163 support for data, signedData, compressedData, digestedData and
164 encryptedData, envelopedData types included. Scripts to check against
165 RFC4134 examples draft and interop and consistency checks of many
166 content types and variants.
169 *) Add options to enc utility to support use of zlib compression BIO.
172 *) Extend mk1mf to support importing of options and assembly language
173 files from Configure script, currently only included in VC-WIN32.
174 The assembly language rules can now optionally generate the source
175 files from the associated perl scripts.
178 *) Implement remaining functionality needed to support GOST ciphersuites.
179 Interop testing has been performed using CryptoPro implementations.
180 [Victor B. Wagner <vitus@cryptocom.ru>]
182 *) s390x assembler pack.
185 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
189 *) Implement Opaque PRF Input TLS extension as specified in
190 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
191 official specification yet and no extension type assignment by
192 IANA exists, this extension (for now) will have to be explicitly
193 enabled when building OpenSSL by providing the extension number
194 to use. For example, specify an option
196 -DTLSEXT_TYPE_opaque_prf_input=0x9527
198 to the "config" or "Configure" script to enable the extension,
199 assuming extension number 0x9527 (which is a completely arbitrary
200 and unofficial assignment based on the MD5 hash of the Internet
201 Draft). Note that by doing so, you potentially lose
202 interoperability with other TLS implementations since these might
203 be using the same extension number for other purposes.
205 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
206 opaque PRF input value to use in the handshake. This will create
207 an interal copy of the length-'len' string at 'src', and will
208 return non-zero for success.
210 To get more control and flexibility, provide a callback function
213 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
214 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
218 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
221 Callback function 'cb' will be called in handshakes, and is
222 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
223 Argument 'arg' is for application purposes (the value as given to
224 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
225 be provided to the callback function). The callback function
226 has to return non-zero to report success: usually 1 to use opaque
227 PRF input just if possible, or 2 to enforce use of the opaque PRF
228 input. In the latter case, the library will abort the handshake
229 if opaque PRF input is not successfully negotiated.
231 Arguments 'peerinput' and 'len' given to the callback function
232 will always be NULL and 0 in the case of a client. A server will
233 see the client's opaque PRF input through these variables if
234 available (NULL and 0 otherwise). Note that if the server
235 provides an opaque PRF input, the length must be the same as the
236 length of the client's opaque PRF input.
238 Note that the callback function will only be called when creating
239 a new session (session resumption can resume whatever was
240 previously negotiated), and will not be called in SSL 2.0
241 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
242 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
243 for applications that need to enforce opaque PRF input.
247 *) Update ssl code to support digests other than SHA1+MD5 for handshake
250 [Victor B. Wagner <vitus@cryptocom.ru>]
252 *) Add RFC4507 support to OpenSSL. This includes the corrections in
253 RFC4507bis. The encrypted ticket format is an encrypted encoded
254 SSL_SESSION structure, that way new session features are automatically
257 If a client application caches session in an SSL_SESSION structure
258 support is transparent because tickets are now stored in the encoded
261 The SSL_CTX structure automatically generates keys for ticket
262 protection in servers so again support should be possible
263 with no application modification.
265 If a client or server wishes to disable RFC4507 support then the option
266 SSL_OP_NO_TICKET can be set.
268 Add a TLS extension debugging callback to allow the contents of any client
269 or server extensions to be examined.
271 This work was sponsored by Google.
274 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
275 OpenSSL should now compile cleanly on gcc 4.2
276 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
278 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
279 support including streaming MAC support: this is required for GOST
281 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
283 *) Add option -stream to use PKCS#7 streaming in smime utility. New
284 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
285 to output in BER and PEM format.
288 *) Experimental support for use of HMAC via EVP_PKEY interface. This
289 allows HMAC to be handled via the EVP_DigestSign*() interface. The
290 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
291 ENGINE support for HMAC keys which are unextractable. New -mac and
292 -macopt options to dgst utility.
295 *) New option -sigopt to dgst utility. Update dgst to use
296 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
297 alternative signing paramaters such as X9.31 or PSS in the dgst
301 *) Change ssl_cipher_apply_rule(), the internal function that does
302 the work each time a ciphersuite string requests enabling
303 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
304 removing ("!foo+bar") a class of ciphersuites: Now it maintains
305 the order of disabled ciphersuites such that those ciphersuites
306 that most recently went from enabled to disabled not only stay
307 in order with respect to each other, but also have higher priority
308 than other disabled ciphersuites the next time ciphersuites are
311 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
312 the same ciphersuites as with "HIGH" alone, but in a specific
313 order where the PSK ciphersuites come first (since they are the
314 most recently disabled ciphersuites when "HIGH" is parsed).
316 Also, change ssl_create_cipher_list() (using this new
317 funcionality) such that between otherwise identical
318 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
322 *) Change ssl_create_cipher_list() so that it automatically
323 arranges the ciphersuites in reasonable order before starting
324 to process the rule string. Thus, the definition for "DEFAULT"
325 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
326 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
327 This makes it much easier to arrive at a reasonable default order
328 in applications for which anonymous ciphers are OK (meaning
329 that you can't actually use DEFAULT).
330 [Bodo Moeller; suggested by Victor Duchovni]
332 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
333 processing) into multiple integers instead of setting
334 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
335 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
336 (These masks as well as the individual bit definitions are hidden
337 away into the non-exported interface ssl/ssl_locl.h, so this
338 change to the definition of the SSL_CIPHER structure shouldn't
339 affect applications.) This give us more bits for each of these
340 categories, so there is no longer a need to coagulate AES128 and
341 AES256 into a single algorithm bit, and to coagulate Camellia128
342 and Camellia256 into a single algorithm bit, which has led to all
345 Thus, among other things, the kludge introduced in 0.9.7m and
346 0.9.8e for masking out AES256 independently of AES128 or masking
347 out Camellia256 independently of AES256 is not needed here in 0.9.9.
349 With the change, we also introduce new ciphersuite aliases that
350 so far were missing: "AES128", "AES256", "CAMELLIA128", and
354 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
355 Use the leftmost N bytes of the signature input if the input is
356 larger than the prime q (with N being the size in bytes of q).
359 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
360 it yet and it is largely untested.
363 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
366 *) Initial incomplete changes to avoid need for function casts in OpenSSL
367 some compilers (gcc 4.2 and later) reject their use. Safestack is
368 reimplemented. Update ASN1 to avoid use of legacy functions.
371 *) Win32/64 targets are linked with Winsock2.
374 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
375 to external functions. This can be used to increase CRL handling
376 efficiency especially when CRLs are very large by (for example) storing
377 the CRL revoked certificates in a database.
380 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
381 new CRLs added to a directory can be used. New command line option
382 -verify_return_error to s_client and s_server. This causes real errors
383 to be returned by the verify callback instead of carrying on no matter
384 what. This reflects the way a "real world" verify callback would behave.
387 *) GOST engine, supporting several GOST algorithms and public key formats.
388 Kindly donated by Cryptocom.
391 *) Partial support for Issuing Distribution Point CRL extension. CRLs
392 partitioned by DP are handled but no indirect CRL or reason partitioning
393 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
394 selected via a scoring technique which handles IDP and AKID in CRLs.
397 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
398 will ultimately be used for all verify operations: this will remove the
399 X509_STORE dependency on certificate verification and allow alternative
400 lookup methods. X509_STORE based implementations of these two callbacks.
403 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
404 Modify get_crl() to find a valid (unexpired) CRL if possible.
407 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
408 this would be called X509_CRL_cmp() but that name is already used by
409 a function that just compares CRL issuer names. Cache several CRL
410 extensions in X509_CRL structure and cache CRLDP in X509.
413 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
414 this maps equivalent X509_NAME structures into a consistent structure.
415 Name comparison can then be performed rapidly using memcmp().
418 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
422 *) Allow digests to supply their own micalg string for S/MIME type using
423 the ctrl EVP_MD_CTRL_MICALG.
426 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
427 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
428 ctrl. It can then customise the structure before and/or after signing
432 *) New function OBJ_add_sigid() to allow application defined signature OIDs
433 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
434 to free up any added signature OIDs.
437 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
438 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
439 digest and cipher tables. New options added to openssl utility:
440 list-message-digest-algorithms and list-cipher-algorithms.
443 *) Change the array representation of binary polynomials: the list
444 of degrees of non-zero coefficients is now terminated with -1.
445 Previously it was terminated with 0, which was also part of the
446 value; thus, the array representation was not applicable to
447 polynomials where t^0 has coefficient zero. This change makes
448 the array representation useful in a more general context.
451 *) Various modifications and fixes to SSL/TLS cipher string
452 handling. For ECC, the code now distinguishes between fixed ECDH
453 with RSA certificates on the one hand and with ECDSA certificates
454 on the other hand, since these are separate ciphersuites. The
455 unused code for Fortezza ciphersuites has been removed.
457 For consistency with EDH, ephemeral ECDH is now called "EECDH"
458 (not "ECDHE"). For consistency with the code for DH
459 certificates, use of ECDH certificates is now considered ECDH
460 authentication, not RSA or ECDSA authentication (the latter is
461 merely the CA's signing algorithm and not actively used in the
464 The temporary ciphersuite alias "ECCdraft" is no longer
465 available, and ECC ciphersuites are no longer excluded from "ALL"
466 and "DEFAULT". The following aliases now exist for RFC 4492
467 ciphersuites, most of these by analogy with the DH case:
469 kECDHr - ECDH cert, signed with RSA
470 kECDHe - ECDH cert, signed with ECDSA
471 kECDH - ECDH cert (signed with either RSA or ECDSA)
472 kEECDH - ephemeral ECDH
473 ECDH - ECDH cert or ephemeral ECDH
479 AECDH - anonymous ECDH
480 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
484 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
485 Use correct micalg parameters depending on digest(s) in signed message.
488 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
489 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
492 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
493 an engine to register a method. Add ENGINE lookups for methods and
494 functional reference processing.
497 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
498 EVP_{Sign,Verify}* which allow an application to customise the signature
502 *) New -resign option to smime utility. This adds one or more signers
503 to an existing PKCS#7 signedData structure. Also -md option to use an
504 alternative message digest algorithm for signing.
507 *) Tidy up PKCS#7 routines and add new functions to make it easier to
508 create PKCS7 structures containing multiple signers. Update smime
509 application to support multiple signers.
512 *) New -macalg option to pkcs12 utility to allow setting of an alternative
516 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
517 Reorganize PBE internals to lookup from a static table using NIDs,
518 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
519 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
520 PRF which will be automatically used with PBES2.
523 *) Replace the algorithm specific calls to generate keys in "req" with the
527 *) Update PKCS#7 enveloped data routines to use new API. This is now
528 supported by any public key method supporting the encrypt operation. A
529 ctrl is added to allow the public key algorithm to examine or modify
530 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
534 *) Add a ctrl to asn1 method to allow a public key algorithm to express
535 a default digest type to use. In most cases this will be SHA1 but some
536 algorithms (such as GOST) need to specify an alternative digest. The
537 return value indicates how strong the prefernce is 1 means optional and
538 2 is mandatory (that is it is the only supported type). Modify
539 ASN1_item_sign() to accept a NULL digest argument to indicate it should
540 use the default md. Update openssl utilities to use the default digest
541 type for signing if it is not explicitly indicated.
544 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
545 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
546 signing method from the key type. This effectively removes the link
547 between digests and public key types.
550 *) Add an OID cross reference table and utility functions. Its purpose is to
551 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
552 rsaEncryption. This will allow some of the algorithm specific hackery
553 needed to use the correct OID to be removed.
556 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
557 structures for PKCS7_sign(). They are now set up by the relevant public
561 *) Add provisional EC pkey method with support for ECDSA and ECDH.
564 *) Add support for key derivation (agreement) in the API, DH method and
568 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
569 public and private key formats. As a side effect these add additional
570 command line functionality not previously available: DSA signatures can be
571 generated and verified using pkeyutl and DH key support and generation in
576 [Oliver Tappe <zooey@hirschkaefer.de>]
578 *) New make target "install_html_docs" installs HTML renditions of the
580 [Oliver Tappe <zooey@hirschkaefer.de>]
582 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
583 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
584 support key and parameter generation and add initial key generation
585 functionality for RSA.
588 *) Add functions for main EVP_PKEY_method operations. The undocumented
589 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
590 EVP_PKEY_{encrypt,decrypt}_old.
593 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
594 key API, doesn't do much yet.
597 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
598 public key algorithms. New option to openssl utility:
599 "list-public-key-algorithms" to print out info.
602 *) Implement the Supported Elliptic Curves Extension for
603 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
606 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
607 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
610 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
611 utilities such as rsa, dsa, dsaparam etc except they process any key
615 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
616 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
617 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
621 *) Initial support for pluggable public key ASN1.
622 De-spaghettify the public key ASN1 handling. Move public and private
623 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
624 algorithm specific handling to a single module within the relevant
625 algorithm directory. Add functions to allow (near) opaque processing
626 of public and private key structures.
629 *) Implement the Supported Point Formats Extension for
630 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
633 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
634 for the psk identity [hint] and the psk callback functions to the
635 SSL_SESSION, SSL and SSL_CTX structure.
638 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
642 SSL_CTX_use_psk_identity_hint
643 SSL_get_psk_identity_hint
645 SSL_use_psk_identity_hint
647 [Mika Kousa and Pasi Eronen of Nokia Corporation]
649 *) Add RFC 3161 compliant time stamp request creation, response generation
650 and response verification functionality.
651 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
653 *) Add initial support for TLS extensions, specifically for the server_name
654 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
655 have new members for a host name. The SSL data structure has an
656 additional member SSL_CTX *initial_ctx so that new sessions can be
657 stored in that context to allow for session resumption, even after the
658 SSL has been switched to a new SSL_CTX in reaction to a client's
659 server_name extension.
661 New functions (subject to change):
664 SSL_get_servername_type()
667 New CTRL codes and macros (subject to change):
669 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
670 - SSL_CTX_set_tlsext_servername_callback()
671 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
672 - SSL_CTX_set_tlsext_servername_arg()
673 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
675 openssl s_client has a new '-servername ...' option.
677 openssl s_server has new options '-servername_host ...', '-cert2 ...',
678 '-key2 ...', '-servername_fatal' (subject to change). This allows
679 testing the HostName extension for a specific single host name ('-cert'
680 and '-key' remain fallbacks for handshakes without HostName
681 negotiation). If the unrecogninzed_name alert has to be sent, this by
682 default is a warning; it becomes fatal with the '-servername_fatal'
685 [Peter Sylvester, Remy Allais, Christophe Renou]
687 *) Whirlpool hash implementation is added.
690 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
691 bn(64,32). Because of instruction set limitations it doesn't have
692 any negative impact on performance. This was done mostly in order
693 to make it possible to share assembler modules, such as bn_mul_mont
694 implementations, between 32- and 64-bit builds without hassle.
697 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
698 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
702 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
703 dedicated Montgomery multiplication procedure, is introduced.
704 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
705 "64-bit" performance on certain 32-bit targets.
708 *) New option SSL_OP_NO_COMP to disable use of compression selectively
709 in SSL structures. New SSL ctrl to set maximum send fragment size.
710 Save memory by seeting the I/O buffer sizes dynamically instead of
711 using the maximum available value.
714 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
715 in addition to the text details.
718 *) Very, very preliminary EXPERIMENTAL support for printing of general
719 ASN1 structures. This currently produces rather ugly output and doesn't
720 handle several customised structures at all.
723 *) Integrated support for PVK file format and some related formats such
724 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
725 these in the 'rsa' and 'dsa' utilities.
728 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
731 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
732 place for the (very old) "NETSCAPE" format certificates which are now
733 handled using new ASN1 code equivalents.
736 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
737 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
738 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
741 *) Modify CRL distribution points extension code to print out previously
742 unsupported fields. Enhance extension setting code to allow setting of
746 *) Add print and set support for Issuing Distribution Point CRL extension.
749 *) Change 'Configure' script to enable Camellia by default.
752 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
754 *) Don't set val to NULL when freeing up structures, it is freed up by
755 underlying code. If sizeof(void *) > sizeof(long) this can result in
756 zeroing past the valid field. (CVE-2009-0789)
757 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
759 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
760 checked correctly. This would allow some invalid signed attributes to
761 appear to verify correctly. (CVE-2009-0591)
762 [Ivan Nestlerode <inestlerode@us.ibm.com>]
764 *) Reject UniversalString and BMPString types with invalid lengths. This
765 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
766 a legal length. (CVE-2009-0590)
769 *) Set S/MIME signing as the default purpose rather than setting it
770 unconditionally. This allows applications to override it at the store
774 *) Permit restricted recursion of ASN1 strings. This is needed in practice
775 to handle some structures.
778 *) Improve efficiency of mem_gets: don't search whole buffer each time
780 [Jeremy Shapiro <jnshapir@us.ibm.com>]
782 *) New -hex option for openssl rand.
785 *) Print out UTF8String and NumericString when parsing ASN1.
788 *) Support NumericString type for name components.
791 *) Allow CC in the environment to override the automatically chosen
792 compiler. Note that nothing is done to ensure flags work with the
796 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
798 *) Properly check EVP_VerifyFinal() and similar return values
800 [Ben Laurie, Bodo Moeller, Google Security Team]
802 *) Enable TLS extensions by default.
805 *) Allow the CHIL engine to be loaded, whether the application is
806 multithreaded or not. (This does not release the developer from the
807 obligation to set up the dynamic locking callbacks.)
808 [Sander Temme <sander@temme.net>]
810 *) Use correct exit code if there is an error in dgst command.
811 [Steve Henson; problem pointed out by Roland Dirlewanger]
813 *) Tweak Configure so that you need to say "experimental-jpake" to enable
814 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
817 *) Add experimental JPAKE support, including demo authentication in
818 s_client and s_server.
821 *) Set the comparison function in v3_addr_canonize().
822 [Rob Austein <sra@hactrn.net>]
824 *) Add support for XMPP STARTTLS in s_client.
825 [Philip Paeps <philip@freebsd.org>]
827 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
828 to ensure that even with this option, only ciphersuites in the
829 server's preference list will be accepted. (Note that the option
830 applies only when resuming a session, so the earlier behavior was
831 just about the algorithm choice for symmetric cryptography.)
834 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
836 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
837 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
840 *) The fix in 0.9.8c that supposedly got rid of unsafe
841 double-checked locking was incomplete for RSA blinding,
842 addressing just one layer of what turns out to have been
843 doubly unsafe triple-checked locking.
845 So now fix this for real by retiring the MONT_HELPER macro
846 in crypto/rsa/rsa_eay.c.
848 [Bodo Moeller; problem pointed out by Marius Schilder]
850 *) Various precautionary measures:
852 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
854 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
855 (NB: This would require knowledge of the secret session ticket key
856 to exploit, in which case you'd be SOL either way.)
858 - Change bn_nist.c so that it will properly handle input BIGNUMs
859 outside the expected range.
861 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
864 [Neel Mehta, Bodo Moeller]
866 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
867 the load fails. Useful for distros.
868 [Ben Laurie and the FreeBSD team]
870 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
873 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
876 *) Expand ENGINE to support engine supplied SSL client certificate functions.
878 This work was sponsored by Logica.
881 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
882 keystores. Support for SSL/TLS client authentication too.
883 Not compiled unless enable-capieng specified to Configure.
885 This work was sponsored by Logica.
888 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
889 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
890 attribute creation routines such as certifcate requests and PKCS#12
894 Changes between 0.9.8g and 0.9.8h [28 May 2008]
896 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
897 handshake which could lead to a cilent crash as found using the
898 Codenomicon TLS test suite (CVE-2008-1672)
899 [Steve Henson, Mark Cox]
901 *) Fix double free in TLS server name extensions which could lead to
902 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
905 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
907 Clear the error queue to ensure that error entries left from
908 older function calls do not interfere with the correct operation.
909 [Lutz Jaenicke, Erik de Castro Lopo]
911 *) Remove root CA certificates of commercial CAs:
913 The OpenSSL project does not recommend any specific CA and does not
914 have any policy with respect to including or excluding any CA.
915 Therefore it does not make any sense to ship an arbitrary selection
916 of root CA certificates with the OpenSSL software.
919 *) RSA OAEP patches to fix two separate invalid memory reads.
920 The first one involves inputs when 'lzero' is greater than
921 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
922 before the beginning of from). The second one involves inputs where
923 the 'db' section contains nothing but zeroes (there is a one-byte
924 invalid read after the end of 'db').
925 [Ivan Nestlerode <inestlerode@us.ibm.com>]
927 *) Partial backport from 0.9.9-dev:
929 Introduce bn_mul_mont (dedicated Montgomery multiplication
930 procedure) as a candidate for BIGNUM assembler implementation.
931 While 0.9.9-dev uses assembler for various architectures, only
932 x86_64 is available by default here in the 0.9.8 branch, and
933 32-bit x86 is available through a compile-time setting.
935 To try the 32-bit x86 assembler implementation, use Configure
936 option "enable-montasm" (which exists only for this backport).
938 As "enable-montasm" for 32-bit x86 disclaims code stability
939 anyway, in this constellation we activate additional code
940 backported from 0.9.9-dev for further performance improvements,
941 namely BN_from_montgomery_word. (To enable this otherwise,
942 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
944 [Andy Polyakov (backport partially by Bodo Moeller)]
946 *) Add TLS session ticket callback. This allows an application to set
947 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
948 values. This is useful for key rollover for example where several key
949 sets may exist with different names.
952 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
953 This was broken until now in 0.9.8 releases, such that the only way
954 a registered ENGINE could be used (assuming it initialises
955 successfully on the host) was to explicitly set it as the default
956 for the relevant algorithms. This is in contradiction with 0.9.7
957 behaviour and the documentation. With this fix, when an ENGINE is
958 registered into a given algorithm's table of implementations, the
959 'uptodate' flag is reset so that auto-discovery will be used next
960 time a new context for that algorithm attempts to select an
962 [Ian Lister (tweaked by Geoff Thorpe)]
964 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
965 implemention in the following ways:
967 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
970 Lack of BER streaming support means one pass streaming processing is
971 only supported if data is detached: setting the streaming flag is
972 ignored for embedded content.
974 CMS support is disabled by default and must be explicitly enabled
975 with the enable-cms configuration option.
978 *) Update the GMP engine glue to do direct copies between BIGNUM and
979 mpz_t when openssl and GMP use the same limb size. Otherwise the
980 existing "conversion via a text string export" trick is still used.
981 [Paul Sheer <paulsheer@gmail.com>]
983 *) Zlib compression BIO. This is a filter BIO which compressed and
984 uncompresses any data passed through it.
987 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
988 RFC3394 compatible AES key wrapping.
991 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
992 sets string data without copying. X509_ALGOR_set0() and
993 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
994 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
995 from an X509_ATTRIBUTE structure optionally checking it occurs only
996 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1000 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1001 to get the expected BN_FLG_CONSTTIME behavior.
1002 [Bodo Moeller (Google)]
1006 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1007 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1008 - added some more tests to do_tests.pl
1009 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1010 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1011 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1012 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1013 - various changes to netware.pl to enable gcc-cross builds on Win32
1015 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1016 - various changes to fix missing prototype warnings
1017 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1018 - added AES, WHIRLPOOL and CPUID assembler code to build files
1019 - added missing AES assembler make rules to mk1mf.pl
1020 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1021 [Guenter Knauf <eflash@gmx.net>]
1023 *) Implement certificate status request TLS extension defined in RFC3546.
1024 A client can set the appropriate parameters and receive the encoded
1025 OCSP response via a callback. A server can query the supplied parameters
1026 and set the encoded OCSP response in the callback. Add simplified examples
1027 to s_client and s_server.
1030 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1032 *) Fix various bugs:
1033 + Binary incompatibility of ssl_ctx_st structure
1034 + DTLS interoperation with non-compliant servers
1035 + Don't call get_session_cb() without proposed session
1036 + Fix ia64 assembler code
1037 [Andy Polyakov, Steve Henson]
1039 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1041 *) DTLS Handshake overhaul. There were longstanding issues with
1042 OpenSSL DTLS implementation, which were making it impossible for
1043 RFC 4347 compliant client to communicate with OpenSSL server.
1044 Unfortunately just fixing these incompatibilities would "cut off"
1045 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1046 server keeps tolerating non RFC compliant syntax. The opposite is
1047 not true, 0.9.8f client can not communicate with earlier server.
1048 This update even addresses CVE-2007-4995.
1051 *) Changes to avoid need for function casts in OpenSSL: some compilers
1052 (gcc 4.2 and later) reject their use.
1053 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1056 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1057 RFC4507bis. The encrypted ticket format is an encrypted encoded
1058 SSL_SESSION structure, that way new session features are automatically
1061 If a client application caches session in an SSL_SESSION structure
1062 support is transparent because tickets are now stored in the encoded
1065 The SSL_CTX structure automatically generates keys for ticket
1066 protection in servers so again support should be possible
1067 with no application modification.
1069 If a client or server wishes to disable RFC4507 support then the option
1070 SSL_OP_NO_TICKET can be set.
1072 Add a TLS extension debugging callback to allow the contents of any client
1073 or server extensions to be examined.
1075 This work was sponsored by Google.
1078 *) Add initial support for TLS extensions, specifically for the server_name
1079 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1080 have new members for a host name. The SSL data structure has an
1081 additional member SSL_CTX *initial_ctx so that new sessions can be
1082 stored in that context to allow for session resumption, even after the
1083 SSL has been switched to a new SSL_CTX in reaction to a client's
1084 server_name extension.
1086 New functions (subject to change):
1088 SSL_get_servername()
1089 SSL_get_servername_type()
1092 New CTRL codes and macros (subject to change):
1094 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1095 - SSL_CTX_set_tlsext_servername_callback()
1096 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1097 - SSL_CTX_set_tlsext_servername_arg()
1098 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1100 openssl s_client has a new '-servername ...' option.
1102 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1103 '-key2 ...', '-servername_fatal' (subject to change). This allows
1104 testing the HostName extension for a specific single host name ('-cert'
1105 and '-key' remain fallbacks for handshakes without HostName
1106 negotiation). If the unrecogninzed_name alert has to be sent, this by
1107 default is a warning; it becomes fatal with the '-servername_fatal'
1110 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1112 *) Add AES and SSE2 assembly language support to VC++ build.
1115 *) Mitigate attack on final subtraction in Montgomery reduction.
1118 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1119 (which previously caused an internal error).
1122 *) Squeeze another 10% out of IGE mode when in != out.
1125 *) AES IGE mode speedup.
1126 [Dean Gaudet (Google)]
1128 *) Add the Korean symmetric 128-bit cipher SEED (see
1129 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1130 add SEED ciphersuites from RFC 4162:
1132 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1133 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1134 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1135 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1137 To minimize changes between patchlevels in the OpenSSL 0.9.8
1138 series, SEED remains excluded from compilation unless OpenSSL
1139 is configured with 'enable-seed'.
1140 [KISA, Bodo Moeller]
1142 *) Mitigate branch prediction attacks, which can be practical if a
1143 single processor is shared, allowing a spy process to extract
1144 information. For detailed background information, see
1145 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1146 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1147 and Necessary Software Countermeasures"). The core of the change
1148 are new versions BN_div_no_branch() and
1149 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1150 respectively, which are slower, but avoid the security-relevant
1151 conditional branches. These are automatically called by BN_div()
1152 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1153 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1154 remove a conditional branch.
1156 BN_FLG_CONSTTIME is the new name for the previous
1157 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1158 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1159 in the exponent causes BN_mod_exp_mont() to use the alternative
1160 implementation in BN_mod_exp_mont_consttime().) The old name
1161 remains as a deprecated alias.
1163 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1164 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1165 constant-time implementations for more than just exponentiation.
1166 Here too the old name is kept as a deprecated alias.
1168 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1169 the BN_BLINDING structure gets an independent copy of the
1170 modulus. This means that the previous "BIGNUM *m" argument to
1171 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1172 essentially becomes "const BIGNUM *m", although we can't actually
1173 change this in the header file before 0.9.9. It allows
1174 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1175 enable BN_FLG_CONSTTIME.
1177 [Matthew D Wood (Intel Corp)]
1179 *) In the SSL/TLS server implementation, be strict about session ID
1180 context matching (which matters if an application uses a single
1181 external cache for different purposes). Previously,
1182 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1183 set. This did ensure strict client verification, but meant that,
1184 with applications using a single external cache for quite
1185 different requirements, clients could circumvent ciphersuite
1186 restrictions for a given session ID context by starting a session
1187 in a different context.
1190 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1191 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1192 authentication-only ciphersuites.
1195 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1196 not complete and could lead to a possible single byte overflow
1197 (CVE-2007-5135) [Ben Laurie]
1199 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1201 *) Since AES128 and AES256 (and similarly Camellia128 and
1202 Camellia256) share a single mask bit in the logic of
1203 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1204 kludge to work properly if AES128 is available and AES256 isn't
1205 (or if Camellia128 is available and Camellia256 isn't).
1208 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1209 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1210 When a point or a seed is encoded in a BIT STRING, we need to
1211 prevent the removal of trailing zero bits to get the proper DER
1212 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1213 of a NamedBitList, for which trailing 0 bits need to be removed.)
1216 *) Have SSL/TLS server implementation tolerate "mismatched" record
1217 protocol version while receiving ClientHello even if the
1218 ClientHello is fragmented. (The server can't insist on the
1219 particular protocol version it has chosen before the ServerHello
1220 message has informed the client about his choice.)
1223 *) Add RFC 3779 support.
1224 [Rob Austein for ARIN, Ben Laurie]
1226 *) Load error codes if they are not already present instead of using a
1227 static variable. This allows them to be cleanly unloaded and reloaded.
1228 Improve header file function name parsing.
1231 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1232 or CAPABILITY handshake as required by RFCs.
1235 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1237 *) Introduce limits to prevent malicious keys being able to
1238 cause a denial of service. (CVE-2006-2940)
1239 [Steve Henson, Bodo Moeller]
1241 *) Fix ASN.1 parsing of certain invalid structures that can result
1242 in a denial of service. (CVE-2006-2937) [Steve Henson]
1244 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1245 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1247 *) Fix SSL client code which could crash if connecting to a
1248 malicious SSLv2 server. (CVE-2006-4343)
1249 [Tavis Ormandy and Will Drewry, Google Security Team]
1251 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1252 match only those. Before that, "AES256-SHA" would be interpreted
1253 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1254 the same strength classification in 0.9.7h) as we currently only
1255 have a single AES bit in the ciphersuite description bitmap.
1256 That change, however, also applied to ciphersuite strings such as
1257 "RC4-MD5" that intentionally matched multiple ciphersuites --
1258 namely, SSL 2.0 ciphersuites in addition to the more common ones
1259 from SSL 3.0/TLS 1.0.
1261 So we change the selection algorithm again: Naming an explicit
1262 ciphersuite selects this one ciphersuite, and any other similar
1263 ciphersuite (same bitmap) from *other* protocol versions.
1264 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1265 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1267 Since SSL 2.0 does not have any ciphersuites for which the
1268 128/256 bit distinction would be relevant, this works for now.
1269 The proper fix will be to use different bits for AES128 and
1270 AES256, which would have avoided the problems from the beginning;
1271 however, bits are scarce, so we can only do this in a new release
1272 (not just a patchlevel) when we can change the SSL_CIPHER
1273 definition to split the single 'unsigned long mask' bitmap into
1274 multiple values to extend the available space.
1278 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1280 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1281 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1283 *) Add AES IGE and biIGE modes.
1286 *) Change the Unix randomness entropy gathering to use poll() when
1287 possible instead of select(), since the latter has some
1288 undesirable limitations.
1289 [Darryl Miles via Richard Levitte and Bodo Moeller]
1291 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1292 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1293 cannot be implicitly activated as part of, e.g., the "AES" alias.
1294 However, please upgrade to OpenSSL 0.9.9[-dev] for
1295 non-experimental use of the ECC ciphersuites to get TLS extension
1296 support, which is required for curve and point format negotiation
1297 to avoid potential handshake problems.
1300 *) Disable rogue ciphersuites:
1302 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1303 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1304 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1306 The latter two were purportedly from
1307 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1310 Also deactivate the remaining ciphersuites from
1311 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1312 unofficial, and the ID has long expired.
1315 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1316 dual-core machines) and other potential thread-safety issues.
1319 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1320 versions), which is now available for royalty-free use
1321 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1322 Also, add Camellia TLS ciphersuites from RFC 4132.
1324 To minimize changes between patchlevels in the OpenSSL 0.9.8
1325 series, Camellia remains excluded from compilation unless OpenSSL
1326 is configured with 'enable-camellia'.
1329 *) Disable the padding bug check when compression is in use. The padding
1330 bug check assumes the first packet is of even length, this is not
1331 necessarily true if compresssion is enabled and can result in false
1332 positives causing handshake failure. The actual bug test is ancient
1333 code so it is hoped that implementations will either have fixed it by
1334 now or any which still have the bug do not support compression.
1337 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1339 *) When applying a cipher rule check to see if string match is an explicit
1340 cipher suite and only match that one cipher suite if it is.
1343 *) Link in manifests for VC++ if needed.
1344 [Austin Ziegler <halostatue@gmail.com>]
1346 *) Update support for ECC-based TLS ciphersuites according to
1347 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1348 TLS extensions, which are supported starting with the 0.9.9
1349 branch, not in the OpenSSL 0.9.8 branch).
1352 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1353 opaque EVP_CIPHER_CTX handling.
1356 *) Fixes and enhancements to zlib compression code. We now only use
1357 "zlib1.dll" and use the default __cdecl calling convention on Win32
1358 to conform with the standards mentioned here:
1359 http://www.zlib.net/DLL_FAQ.txt
1360 Static zlib linking now works on Windows and the new --with-zlib-include
1361 --with-zlib-lib options to Configure can be used to supply the location
1362 of the headers and library. Gracefully handle case where zlib library
1366 *) Several fixes and enhancements to the OID generation code. The old code
1367 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1368 handle numbers larger than ULONG_MAX, truncated printing and had a
1369 non standard OBJ_obj2txt() behaviour.
1372 *) Add support for building of engines under engine/ as shared libraries
1373 under VC++ build system.
1376 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1377 Hopefully, we will not see any false combination of paths any more.
1380 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1382 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1383 (part of SSL_OP_ALL). This option used to disable the
1384 countermeasure against man-in-the-middle protocol-version
1385 rollback in the SSL 2.0 server implementation, which is a bad
1386 idea. (CVE-2005-2969)
1388 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1389 for Information Security, National Institute of Advanced Industrial
1390 Science and Technology [AIST], Japan)]
1392 *) Add two function to clear and return the verify parameter flags.
1395 *) Keep cipherlists sorted in the source instead of sorting them at
1396 runtime, thus removing the need for a lock.
1399 *) Avoid some small subgroup attacks in Diffie-Hellman.
1400 [Nick Mathewson and Ben Laurie]
1402 *) Add functions for well-known primes.
1405 *) Extended Windows CE support.
1406 [Satoshi Nakamura and Andy Polyakov]
1408 *) Initialize SSL_METHOD structures at compile time instead of during
1409 runtime, thus removing the need for a lock.
1412 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1413 attempting to decrypt each encrypted key in turn. Add support to
1417 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1419 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1422 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1425 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1426 key into the same file any more.
1429 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1432 *) Add -utf8 command line and config file option to 'ca'.
1433 [Stefan <stf@udoma.org]
1435 *) Removed the macro des_crypt(), as it seems to conflict with some
1436 libraries. Use DES_crypt().
1439 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1440 involves renaming the source and generated shared-libs for
1441 both. The engines will accept the corrected or legacy ids
1442 ('ncipher' and '4758_cca' respectively) when binding. NB,
1443 this only applies when building 'shared'.
1444 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1446 *) Add attribute functions to EVP_PKEY structure. Modify
1447 PKCS12_create() to recognize a CSP name attribute and
1448 use it. Make -CSP option work again in pkcs12 utility.
1451 *) Add new functionality to the bn blinding code:
1452 - automatic re-creation of the BN_BLINDING parameters after
1453 a fixed number of uses (currently 32)
1454 - add new function for parameter creation
1455 - introduce flags to control the update behaviour of the
1456 BN_BLINDING parameters
1457 - hide BN_BLINDING structure
1458 Add a second BN_BLINDING slot to the RSA structure to improve
1459 performance when a single RSA object is shared among several
1463 *) Add support for DTLS.
1464 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1466 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1467 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1470 *) Remove buggy and incompletet DH cert support from
1471 ssl/ssl_rsa.c and ssl/s3_both.c
1474 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1475 the apps/openssl applications.
1478 *) Compile clean with "-Wall -Wmissing-prototypes
1479 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1480 DEBUG_SAFESTACK must also be set.
1483 *) Change ./Configure so that certain algorithms can be disabled by default.
1484 The new counterpiece to "no-xxx" is "enable-xxx".
1486 The patented RC5 and MDC2 algorithms will now be disabled unless
1487 "enable-rc5" and "enable-mdc2", respectively, are specified.
1489 (IDEA remains enabled despite being patented. This is because IDEA
1490 is frequently required for interoperability, and there is no license
1491 fee for non-commercial use. As before, "no-idea" can be used to
1492 avoid this algorithm.)
1496 *) Add processing of proxy certificates (see RFC 3820). This work was
1497 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1498 EGEE (Enabling Grids for E-science in Europe).
1501 *) RC4 performance overhaul on modern architectures/implementations, such
1502 as Intel P4, IA-64 and AMD64.
1505 *) New utility extract-section.pl. This can be used specify an alternative
1506 section number in a pod file instead of having to treat each file as
1507 a separate case in Makefile. This can be done by adding two lines to the
1510 =for comment openssl_section:XXX
1512 The blank line is mandatory.
1516 *) New arguments -certform, -keyform and -pass for s_client and s_server
1517 to allow alternative format key and certificate files and passphrase
1521 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1522 update associated structures and add various utility functions.
1524 Add new policy related verify parameters, include policy checking in
1525 standard verify code. Enhance 'smime' application with extra parameters
1526 to support policy checking and print out.
1529 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1530 Nehemiah processors. These extensions support AES encryption in hardware
1531 as well as RNG (though RNG support is currently disabled).
1532 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1534 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1537 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1538 [Andy Polyakov and a number of other people]
1540 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1541 implementation contributed by IBM.
1542 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1544 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1545 exponent rather than 'unsigned long'. There is a corresponding change to
1546 the new 'rsa_keygen' element of the RSA_METHOD structure.
1547 [Jelte Jansen, Geoff Thorpe]
1549 *) Functionality for creating the initial serial number file is now
1550 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1552 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1553 number file to 1, which is bound to cause problems. To avoid
1554 the problems while respecting compatibility between different 0.9.7
1555 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1556 CA.pl for serial number initialization. With the new release 0.9.8,
1557 we can fix the problem directly in the 'ca' utility.)
1560 *) Reduced header interdepencies by declaring more opaque objects in
1561 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1562 give fewer recursive includes, which could break lazy source code - so
1563 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1564 developers should define this symbol when building and using openssl to
1565 ensure they track the recommended behaviour, interfaces, [etc], but
1566 backwards-compatible behaviour prevails when this isn't defined.
1569 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1572 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1573 This will generate a random key of the appropriate length based on the
1574 cipher context. The EVP_CIPHER can provide its own random key generation
1575 routine to support keys of a specific form. This is used in the des and
1576 3des routines to generate a key of the correct parity. Update S/MIME
1577 code to use new functions and hence generate correct parity DES keys.
1578 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1579 valid (weak or incorrect parity).
1582 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1583 as looking them up. This is useful when the verified structure may contain
1584 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1585 present unless the new PKCS7_NO_CRL flag is asserted.
1588 *) Extend ASN1 oid configuration module. It now additionally accepts the
1591 shortName = some long name, 1.2.3.4
1594 *) Reimplemented the BN_CTX implementation. There is now no more static
1595 limitation on the number of variables it can handle nor the depth of the
1596 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1597 information can now expand as required, and rather than having a single
1598 static array of bignums, BN_CTX now uses a linked-list of such arrays
1599 allowing it to expand on demand whilst maintaining the usefulness of
1600 BN_CTX's "bundling".
1603 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1604 to allow all RSA operations to function using a single BN_CTX.
1607 *) Preliminary support for certificate policy evaluation and checking. This
1608 is initially intended to pass the tests outlined in "Conformance Testing
1609 of Relying Party Client Certificate Path Processing Logic" v1.07.
1612 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1613 remained unused and not that useful. A variety of other little bignum
1614 tweaks and fixes have also been made continuing on from the audit (see
1618 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1619 associated ASN1, EVP and SSL functions and old ASN1 macros.
1622 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1623 and this should never fail. So the return value from the use of
1624 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1625 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1628 *) BN_CTX_get() should return zero-valued bignums, providing the same
1629 initialised value as BN_new().
1630 [Geoff Thorpe, suggested by Ulf Möller]
1632 *) Support for inhibitAnyPolicy certificate extension.
1635 *) An audit of the BIGNUM code is underway, for which debugging code is
1636 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1637 is considered valid when processing BIGNUMs, and causes execution to
1638 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1639 further steps are taken to deliberately pollute unused data in BIGNUM
1640 structures to try and expose faulty code further on. For now, openssl will
1641 (in its default mode of operation) continue to tolerate the inconsistent
1642 forms that it has tolerated in the past, but authors and packagers should
1643 consider trying openssl and their own applications when compiled with
1644 these debugging symbols defined. It will help highlight potential bugs in
1645 their own code, and will improve the test coverage for OpenSSL itself. At
1646 some point, these tighter rules will become openssl's default to improve
1647 maintainability, though the assert()s and other overheads will remain only
1648 in debugging configurations. See bn.h for more details.
1649 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1651 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1652 that can only be obtained through BN_CTX_new() (which implicitly
1653 initialises it). The presence of this function only made it possible
1654 to overwrite an existing structure (and cause memory leaks).
1657 *) Because of the callback-based approach for implementing LHASH as a
1658 template type, lh_insert() adds opaque objects to hash-tables and
1659 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1660 to clean up those corresponding objects before destroying the hash table
1661 (and losing the object pointers). So some over-zealous constifications in
1662 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1663 objects as "const" and the lh_doall[_arg] callback wrappers are not
1664 prototyped to have "const" restrictions on the object pointers they are
1665 given (and so aren't required to cast them away any more).
1668 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1669 (speed) prefers to use its own implementation. The two implementations
1670 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1671 its object type properly exposed (MS_TM) instead of casting to/from "char
1672 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1673 aren't necessarily the greatest nomenclatures - but this is what was used
1674 internally to the implementation so I've used that for now.
1677 *) Ensure that deprecated functions do not get compiled when
1678 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1679 the self-tests were still using deprecated key-generation functions so
1680 these have been updated also.
1683 *) Reorganise PKCS#7 code to separate the digest location functionality
1684 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1685 New function PKCS7_set_digest() to set the digest type for PKCS#7
1686 digestedData type. Add additional code to correctly generate the
1687 digestedData type and add support for this type in PKCS7 initialization
1691 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1692 structure of type "other".
1695 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1696 sure the loop does correctly stop and breaking ("division by zero")
1697 modulus operations are not performed. The (pre-generated) prime
1698 table crypto/bn/bn_prime.h was already correct, but it could not be
1699 re-generated on some platforms because of the "division by zero"
1700 situation in the script.
1701 [Ralf S. Engelschall]
1703 *) Update support for ECC-based TLS ciphersuites according to
1704 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1705 SHA-1 now is only used for "small" curves (where the
1706 representation of a field element takes up to 24 bytes); for
1707 larger curves, the field element resulting from ECDH is directly
1708 used as premaster secret.
1709 [Douglas Stebila (Sun Microsystems Laboratories)]
1711 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1712 curve secp160r1 to the tests.
1713 [Douglas Stebila (Sun Microsystems Laboratories)]
1715 *) Add the possibility to load symbols globally with DSO.
1716 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1718 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1719 control of the error stack.
1722 *) Add support for STORE in ENGINE.
1725 *) Add the STORE type. The intention is to provide a common interface
1726 to certificate and key stores, be they simple file-based stores, or
1727 HSM-type store, or LDAP stores, or...
1728 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1731 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1732 pass a list of arguments to any function as well as provide a way
1733 for a function to pass data back to the caller.
1736 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1737 works like BUF_strdup() but can be used to duplicate a portion of
1738 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1742 *) Add the function sk_find_ex() which works like sk_find(), but will
1743 return an index to an element even if an exact match couldn't be
1744 found. The index is guaranteed to point at the element where the
1745 searched-for key would be inserted to preserve sorting order.
1748 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1749 takes an extra flags argument for optional functionality. Currently,
1750 the following flags are defined:
1752 OBJ_BSEARCH_VALUE_ON_NOMATCH
1753 This one gets OBJ_bsearch_ex() to return a pointer to the first
1754 element where the comparing function returns a negative or zero
1757 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1758 This one gets OBJ_bsearch_ex() to return a pointer to the first
1759 element where the comparing function returns zero. This is useful
1760 if there are more than one element where the comparing function
1764 *) Make it possible to create self-signed certificates with 'openssl ca'
1765 in such a way that the self-signed certificate becomes part of the
1766 CA database and uses the same mechanisms for serial number generation
1767 as all other certificate signing. The new flag '-selfsign' enables
1768 this functionality. Adapt CA.sh and CA.pl.in.
1771 *) Add functionality to check the public key of a certificate request
1772 against a given private. This is useful to check that a certificate
1773 request can be signed by that key (self-signing).
1776 *) Make it possible to have multiple active certificates with the same
1777 subject in the CA index file. This is done only if the keyword
1778 'unique_subject' is set to 'no' in the main CA section (default
1779 if 'CA_default') of the configuration file. The value is saved
1780 with the database itself in a separate index attribute file,
1781 named like the index file with '.attr' appended to the name.
1784 *) Generate muti valued AVAs using '+' notation in config files for
1788 *) Support for nameConstraints certificate extension.
1791 *) Support for policyConstraints certificate extension.
1794 *) Support for policyMappings certificate extension.
1797 *) Make sure the default DSA_METHOD implementation only uses its
1798 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1799 and change its own handlers to be NULL so as to remove unnecessary
1800 indirection. This lets alternative implementations fallback to the
1801 default implementation more easily.
1804 *) Support for directoryName in GeneralName related extensions
1808 *) Make it possible to link applications using Makefile.shared.
1809 Make that possible even when linking against static libraries!
1812 *) Support for single pass processing for S/MIME signing. This now
1813 means that S/MIME signing can be done from a pipe, in addition
1814 cleartext signing (multipart/signed type) is effectively streaming
1815 and the signed data does not need to be all held in memory.
1817 This is done with a new flag PKCS7_STREAM. When this flag is set
1818 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1819 is done after the data is output (and digests calculated) in
1820 SMIME_write_PKCS7().
1823 *) Add full support for -rpath/-R, both in shared libraries and
1824 applications, at least on the platforms where it's known how
1828 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1829 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1830 will now compute a table of multiples of the generator that
1831 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1832 faster (notably in the case of a single point multiplication,
1833 scalar * generator).
1834 [Nils Larsch, Bodo Moeller]
1836 *) IPv6 support for certificate extensions. The various extensions
1837 which use the IP:a.b.c.d can now take IPv6 addresses using the
1838 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1842 *) Added an ENGINE that implements RSA by performing private key
1843 exponentiations with the GMP library. The conversions to and from
1844 GMP's mpz_t format aren't optimised nor are any montgomery forms
1845 cached, and on x86 it appears OpenSSL's own performance has caught up.
1846 However there are likely to be other architectures where GMP could
1847 provide a boost. This ENGINE is not built in by default, but it can be
1848 specified at Configure time and should be accompanied by the necessary
1849 linker additions, eg;
1850 ./config -DOPENSSL_USE_GMP -lgmp
1853 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1854 testing availability of engines with "-t" - the old behaviour is
1855 produced by increasing the feature's verbosity with "-tt".
1858 *) ECDSA routines: under certain error conditions uninitialized BN objects
1859 could be freed. Solution: make sure initialization is performed early
1860 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1864 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1865 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1866 software implementations. For DSA and DH, parameter generation can
1867 also be overriden by providing the appropriate method callbacks.
1870 *) Change the "progress" mechanism used in key-generation and
1871 primality testing to functions that take a new BN_GENCB pointer in
1872 place of callback/argument pairs. The new API functions have "_ex"
1873 postfixes and the older functions are reimplemented as wrappers for
1874 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1875 declarations of the old functions to help (graceful) attempts to
1876 migrate to the new functions. Also, the new key-generation API
1877 functions operate on a caller-supplied key-structure and return
1878 success/failure rather than returning a key or NULL - this is to
1879 help make "keygen" another member function of RSA_METHOD etc.
1881 Example for using the new callback interface:
1883 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1887 BN_GENCB_set(&my_cb, my_callback, my_arg);
1889 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1890 /* For the meaning of a, b in calls to my_callback(), see the
1891 * documentation of the function that calls the callback.
1892 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1893 * my_callback should return 1 if it wants BN_is_prime_ex()
1894 * to continue, or 0 to stop.
1899 *) Change the ZLIB compression method to be stateful, and make it
1900 available to TLS with the number defined in
1901 draft-ietf-tls-compression-04.txt.
1904 *) Add the ASN.1 structures and functions for CertificatePair, which
1905 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1907 CertificatePair ::= SEQUENCE {
1908 forward [0] Certificate OPTIONAL,
1909 reverse [1] Certificate OPTIONAL,
1910 -- at least one of the pair shall be present -- }
1912 Also implement the PEM functions to read and write certificate
1913 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1915 This needed to be defined, mostly for the sake of the LDAP
1916 attribute crossCertificatePair, but may prove useful elsewhere as
1920 *) Make it possible to inhibit symlinking of shared libraries in
1921 Makefile.shared, for Cygwin's sake.
1924 *) Extend the BIGNUM API by creating a function
1925 void BN_set_negative(BIGNUM *a, int neg);
1926 and a macro that behave like
1927 int BN_is_negative(const BIGNUM *a);
1929 to avoid the need to access 'a->neg' directly in applications.
1932 *) Implement fast modular reduction for pseudo-Mersenne primes
1933 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1934 EC_GROUP_new_curve_GFp() will now automatically use this
1936 [Nils Larsch <nla@trustcenter.de>]
1938 *) Add new lock type (CRYPTO_LOCK_BN).
1941 *) Change the ENGINE framework to automatically load engines
1942 dynamically from specific directories unless they could be
1943 found to already be built in or loaded. Move all the
1944 current engines except for the cryptodev one to a new
1946 The engines in engines/ are built as shared libraries if
1947 the "shared" options was given to ./Configure or ./config.
1948 Otherwise, they are inserted in libcrypto.a.
1949 /usr/local/ssl/engines is the default directory for dynamic
1950 engines, but that can be overriden at configure time through
1951 the usual use of --prefix and/or --openssldir, and at run
1952 time with the environment variable OPENSSL_ENGINES.
1953 [Geoff Thorpe and Richard Levitte]
1955 *) Add Makefile.shared, a helper makefile to build shared
1956 libraries. Addapt Makefile.org.
1959 *) Add version info to Win32 DLLs.
1960 [Peter 'Luna' Runestig" <peter@runestig.com>]
1962 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1963 can be added using this API to created arbitrary PKCS#12
1964 files while avoiding the low level API.
1966 New options to PKCS12_create(), key or cert can be NULL and
1967 will then be omitted from the output file. The encryption
1968 algorithm NIDs can be set to -1 for no encryption, the mac
1969 iteration count can be set to 0 to omit the mac.
1971 Enhance pkcs12 utility by making the -nokeys and -nocerts
1972 options work when creating a PKCS#12 file. New option -nomac
1973 to omit the mac, NONE can be set for an encryption algorithm.
1974 New code is modified to use the enhanced PKCS12_create()
1975 instead of the low level API.
1978 *) Extend ASN1 encoder to support indefinite length constructed
1979 encoding. This can output sequences tags and octet strings in
1980 this form. Modify pk7_asn1.c to support indefinite length
1981 encoding. This is experimental and needs additional code to
1982 be useful, such as an ASN1 bio and some enhanced streaming
1985 Extend template encode functionality so that tagging is passed
1986 down to the template encoder.
1989 *) Let 'openssl req' fail if an argument to '-newkey' is not
1990 recognized instead of using RSA as a default.
1993 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1994 As these are not official, they are not included in "ALL";
1995 the "ECCdraft" ciphersuite group alias can be used to select them.
1996 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1998 *) Add ECDH engine support.
1999 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2001 *) Add ECDH in new directory crypto/ecdh/.
2002 [Douglas Stebila (Sun Microsystems Laboratories)]
2004 *) Let BN_rand_range() abort with an error after 100 iterations
2005 without success (which indicates a broken PRNG).
2008 *) Change BN_mod_sqrt() so that it verifies that the input value
2009 is really the square of the return value. (Previously,
2010 BN_mod_sqrt would show GIGO behaviour.)
2013 *) Add named elliptic curves over binary fields from X9.62, SECG,
2014 and WAP/WTLS; add OIDs that were still missing.
2016 [Sheueling Chang Shantz and Douglas Stebila
2017 (Sun Microsystems Laboratories)]
2019 *) Extend the EC library for elliptic curves over binary fields
2020 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2023 EC_GF2m_simple_method
2027 EC_GROUP_new_curve_GF2m
2028 EC_GROUP_set_curve_GF2m
2029 EC_GROUP_get_curve_GF2m
2030 EC_POINT_set_affine_coordinates_GF2m
2031 EC_POINT_get_affine_coordinates_GF2m
2032 EC_POINT_set_compressed_coordinates_GF2m
2034 Point compression for binary fields is disabled by default for
2035 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2038 As binary polynomials are represented as BIGNUMs, various members
2039 of the EC_GROUP and EC_POINT data structures can be shared
2040 between the implementations for prime fields and binary fields;
2041 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2042 are essentially identical to their ..._GFp counterparts.
2043 (For simplicity, the '..._GFp' prefix has been dropped from
2044 various internal method names.)
2046 An internal 'field_div' method (similar to 'field_mul' and
2047 'field_sqr') has been added; this is used only for binary fields.
2049 [Sheueling Chang Shantz and Douglas Stebila
2050 (Sun Microsystems Laboratories)]
2052 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2053 through methods ('mul', 'precompute_mult').
2055 The generic implementations (now internally called 'ec_wNAF_mul'
2056 and 'ec_wNAF_precomputed_mult') remain the default if these
2057 methods are undefined.
2059 [Sheueling Chang Shantz and Douglas Stebila
2060 (Sun Microsystems Laboratories)]
2062 *) New function EC_GROUP_get_degree, which is defined through
2063 EC_METHOD. For curves over prime fields, this returns the bit
2064 length of the modulus.
2066 [Sheueling Chang Shantz and Douglas Stebila
2067 (Sun Microsystems Laboratories)]
2069 *) New functions EC_GROUP_dup, EC_POINT_dup.
2070 (These simply call ..._new and ..._copy).
2072 [Sheueling Chang Shantz and Douglas Stebila
2073 (Sun Microsystems Laboratories)]
2075 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2076 Polynomials are represented as BIGNUMs (where the sign bit is not
2077 used) in the following functions [macros]:
2080 BN_GF2m_sub [= BN_GF2m_add]
2081 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2082 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2083 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2085 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2086 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2087 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2088 BN_GF2m_cmp [= BN_ucmp]
2090 (Note that only the 'mod' functions are actually for fields GF(2^m).
2091 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2093 For some functions, an the irreducible polynomial defining a
2094 field can be given as an 'unsigned int[]' with strictly
2095 decreasing elements giving the indices of those bits that are set;
2096 i.e., p[] represents the polynomial
2097 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2099 p[0] > p[1] > ... > p[k] = 0.
2100 This applies to the following functions:
2105 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2106 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2108 BN_GF2m_mod_sqrt_arr
2109 BN_GF2m_mod_solve_quad_arr
2113 Conversion can be performed by the following functions:
2118 bntest.c has additional tests for binary polynomial arithmetic.
2120 Two implementations for BN_GF2m_mod_div() are available.
2121 The default algorithm simply uses BN_GF2m_mod_inv() and
2122 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2123 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2124 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2126 [Sheueling Chang Shantz and Douglas Stebila
2127 (Sun Microsystems Laboratories)]
2129 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2130 functionality is disabled at compile-time.
2131 [Douglas Stebila <douglas.stebila@sun.com>]
2133 *) Change default behaviour of 'openssl asn1parse' so that more
2134 information is visible when viewing, e.g., a certificate:
2136 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2137 mode the content of non-printable OCTET STRINGs is output in a
2138 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2139 avoid the appearance of a printable string.
2140 [Nils Larsch <nla@trustcenter.de>]
2142 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2144 EC_GROUP_set_asn1_flag()
2145 EC_GROUP_get_asn1_flag()
2146 EC_GROUP_set_point_conversion_form()
2147 EC_GROUP_get_point_conversion_form()
2148 These control ASN1 encoding details:
2149 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2150 has been set to OPENSSL_EC_NAMED_CURVE.
2151 - Points are encoded in uncompressed form by default; options for
2152 asn1_for are as for point2oct, namely
2153 POINT_CONVERSION_COMPRESSED
2154 POINT_CONVERSION_UNCOMPRESSED
2155 POINT_CONVERSION_HYBRID
2157 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2160 EC_GROUP_get0_seed()
2161 EC_GROUP_get_seed_len()
2162 This is used only for ASN1 purposes (so far).
2163 [Nils Larsch <nla@trustcenter.de>]
2165 *) Add 'field_type' member to EC_METHOD, which holds the NID
2166 of the appropriate field type OID. The new function
2167 EC_METHOD_get_field_type() returns this value.
2168 [Nils Larsch <nla@trustcenter.de>]
2173 EC_POINT_point2hex()
2174 EC_POINT_hex2point()
2175 providing useful interfaces to EC_POINT_point2oct() and
2176 EC_POINT_oct2point().
2177 [Nils Larsch <nla@trustcenter.de>]
2179 *) Change internals of the EC library so that the functions
2180 EC_GROUP_set_generator()
2181 EC_GROUP_get_generator()
2182 EC_GROUP_get_order()
2183 EC_GROUP_get_cofactor()
2184 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2185 to methods, which would lead to unnecessary code duplication when
2186 adding different types of curves.
2187 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2189 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2190 arithmetic, and such that modified wNAFs are generated
2191 (which avoid length expansion in many cases).
2194 *) Add a function EC_GROUP_check_discriminant() (defined via
2195 EC_METHOD) that verifies that the curve discriminant is non-zero.
2197 Add a function EC_GROUP_check() that makes some sanity tests
2198 on a EC_GROUP, its generator and order. This includes
2199 EC_GROUP_check_discriminant().
2200 [Nils Larsch <nla@trustcenter.de>]
2202 *) Add ECDSA in new directory crypto/ecdsa/.
2204 Add applications 'openssl ecparam' and 'openssl ecdsa'
2205 (these are based on 'openssl dsaparam' and 'openssl dsa').
2207 ECDSA support is also included in various other files across the
2208 library. Most notably,
2209 - 'openssl req' now has a '-newkey ecdsa:file' option;
2210 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2211 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2212 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2213 them suitable for ECDSA where domain parameters must be
2214 extracted before the specific public key;
2215 - ECDSA engine support has been added.
2216 [Nils Larsch <nla@trustcenter.de>]
2218 *) Include some named elliptic curves, and add OIDs from X9.62,
2219 SECG, and WAP/WTLS. Each curve can be obtained from the new
2221 EC_GROUP_new_by_curve_name(),
2222 and the list of available named curves can be obtained with
2223 EC_get_builtin_curves().
2224 Also add a 'curve_name' member to EC_GROUP objects, which can be
2226 EC_GROUP_set_curve_name()
2227 EC_GROUP_get_curve_name()
2228 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2230 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2231 was actually never needed) and in BN_mul(). The removal in BN_mul()
2232 required a small change in bn_mul_part_recursive() and the addition
2233 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2234 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2235 bn_sub_words() and bn_add_words() except they take arrays with
2239 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
2241 *) In the SSL/TLS server implementation, be strict about session ID
2242 context matching (which matters if an application uses a single
2243 external cache for different purposes). Previously,
2244 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2245 set. This did ensure strict client verification, but meant that,
2246 with applications using a single external cache for quite
2247 different requirements, clients could circumvent ciphersuite
2248 restrictions for a given session ID context by starting a session
2249 in a different context.
2252 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2254 *) Cleanse PEM buffers before freeing them since they may contain
2256 [Benjamin Bennett <ben@psc.edu>]
2258 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2259 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2260 authentication-only ciphersuites.
2263 *) Since AES128 and AES256 share a single mask bit in the logic of
2264 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2265 kludge to work properly if AES128 is available and AES256 isn't.
2268 *) Expand security boundary to match 1.1.1 module.
2271 *) Remove redundant features: hash file source, editing of test vectors
2272 modify fipsld to use external fips_premain.c signature.
2275 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2276 run algorithm test programs.
2279 *) Make algorithm test programs more tolerant of whitespace.
2282 *) Have SSL/TLS server implementation tolerate "mismatched" record
2283 protocol version while receiving ClientHello even if the
2284 ClientHello is fragmented. (The server can't insist on the
2285 particular protocol version it has chosen before the ServerHello
2286 message has informed the client about his choice.)
2289 *) Load error codes if they are not already present instead of using a
2290 static variable. This allows them to be cleanly unloaded and reloaded.
2293 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2295 *) Introduce limits to prevent malicious keys being able to
2296 cause a denial of service. (CVE-2006-2940)
2297 [Steve Henson, Bodo Moeller]
2299 *) Fix ASN.1 parsing of certain invalid structures that can result
2300 in a denial of service. (CVE-2006-2937) [Steve Henson]
2302 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2303 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2305 *) Fix SSL client code which could crash if connecting to a
2306 malicious SSLv2 server. (CVE-2006-4343)
2307 [Tavis Ormandy and Will Drewry, Google Security Team]
2309 *) Change ciphersuite string processing so that an explicit
2310 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2311 will no longer include "AES128-SHA"), and any other similar
2312 ciphersuite (same bitmap) from *other* protocol versions (so that
2313 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2314 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2315 changes from 0.9.8b and 0.9.8d.
2318 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2320 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2321 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2323 *) Change the Unix randomness entropy gathering to use poll() when
2324 possible instead of select(), since the latter has some
2325 undesirable limitations.
2326 [Darryl Miles via Richard Levitte and Bodo Moeller]
2328 *) Disable rogue ciphersuites:
2330 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2331 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2332 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2334 The latter two were purportedly from
2335 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2338 Also deactive the remaining ciphersuites from
2339 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2340 unofficial, and the ID has long expired.
2343 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2344 dual-core machines) and other potential thread-safety issues.
2347 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2349 *) Adapt fipsld and the build system to link against the validated FIPS
2350 module in FIPS mode.
2353 *) Fixes for VC++ 2005 build under Windows.
2356 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2357 from a Windows bash shell such as MSYS. It is autodetected from the
2358 "config" script when run from a VC++ environment. Modify standard VC++
2359 build to use fipscanister.o from the GNU make build.
2362 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2364 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2365 The value now differs depending on if you build for FIPS or not.
2366 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2367 safely run with a non-FIPSed libcrypto, as it may crash because of
2368 the difference induced by this change.
2371 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2373 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2374 (part of SSL_OP_ALL). This option used to disable the
2375 countermeasure against man-in-the-middle protocol-version
2376 rollback in the SSL 2.0 server implementation, which is a bad
2377 idea. (CVE-2005-2969)
2379 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2380 for Information Security, National Institute of Advanced Industrial
2381 Science and Technology [AIST], Japan)]
2383 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2384 mainly for FIPS compliance and not fully integrated at this stage.
2387 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2388 the exponentiation using a fixed-length exponent. (Otherwise,
2389 the information leaked through timing could expose the secret key
2390 after many signatures; cf. Bleichenbacher's attack on DSA with
2394 *) Make a new fixed-window mod_exp implementation the default for
2395 RSA, DSA, and DH private-key operations so that the sequence of
2396 squares and multiplies and the memory access pattern are
2397 independent of the particular secret key. This will mitigate
2398 cache-timing and potential related attacks.
2400 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2401 and this is automatically used by BN_mod_exp_mont() if the new flag
2402 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2403 will use this BN flag for private exponents unless the flag
2404 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2405 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2407 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2409 *) Change the client implementation for SSLv23_method() and
2410 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2411 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2412 (Previously, the SSL 2.0 backwards compatible Client Hello
2413 message format would be used even with SSL_OP_NO_SSLv2.)
2416 *) Add support for smime-type MIME parameter in S/MIME messages which some
2420 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2421 a threadsafe manner. Modify rsa code to use new function and add calls
2422 to dsa and dh code (which had race conditions before).
2425 *) Include the fixed error library code in the C error file definitions
2426 instead of fixing them up at runtime. This keeps the error code
2427 structures constant.
2430 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2432 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2435 *) Fixes for newer kerberos headers. NB: the casts are needed because
2436 the 'length' field is signed on one version and unsigned on another
2437 with no (?) obvious way to tell the difference, without these VC++
2438 complains. Also the "definition" of FAR (blank) is no longer included
2439 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2440 some needed definitions.
2443 *) Undo Cygwin change.
2446 *) Added support for proxy certificates according to RFC 3820.
2447 Because they may be a security thread to unaware applications,
2448 they must be explicitely allowed in run-time. See
2449 docs/HOWTO/proxy_certificates.txt for further information.
2452 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2454 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2455 server and client random values. Previously
2456 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2457 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2459 This change has negligible security impact because:
2461 1. Server and client random values still have 24 bytes of pseudo random
2464 2. Server and client random values are sent in the clear in the initial
2467 3. The master secret is derived using the premaster secret (48 bytes in
2468 size for static RSA ciphersuites) as well as client server and random
2471 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2474 [Stephen Henson, reported by UK NISCC]
2476 *) Use Windows randomness collection on Cygwin.
2479 *) Fix hang in EGD/PRNGD query when communication socket is closed
2480 prematurely by EGD/PRNGD.
2481 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2483 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2486 *) Back-port of selected performance improvements from development
2487 branch, as well as improved support for PowerPC platforms.
2490 *) Add lots of checks for memory allocation failure, error codes to indicate
2491 failure and freeing up memory if a failure occurs.
2492 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2494 *) Add new -passin argument to dgst.
2497 *) Perform some character comparisons of different types in X509_NAME_cmp:
2498 this is needed for some certificates that reencode DNs into UTF8Strings
2499 (in violation of RFC3280) and can't or wont issue name rollover
2503 *) Make an explicit check during certificate validation to see that
2504 the CA setting in each certificate on the chain is correct. As a
2505 side effect always do the following basic checks on extensions,
2506 not just when there's an associated purpose to the check:
2508 - if there is an unhandled critical extension (unless the user
2509 has chosen to ignore this fault)
2510 - if the path length has been exceeded (if one is set at all)
2511 - that certain extensions fit the associated purpose (if one has
2515 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2517 *) Avoid a race condition when CRLs are checked in a multi threaded
2518 environment. This would happen due to the reordering of the revoked
2519 entries during signature checking and serial number lookup. Now the
2520 encoding is cached and the serial number sort performed under a lock.
2521 Add new STACK function sk_is_sorted().
2524 *) Add Delta CRL to the extension code.
2527 *) Various fixes to s3_pkt.c so alerts are sent properly.
2528 [David Holmes <d.holmes@f5.com>]
2530 *) Reduce the chances of duplicate issuer name and serial numbers (in
2531 violation of RFC3280) using the OpenSSL certificate creation utilities.
2532 This is done by creating a random 64 bit value for the initial serial
2533 number when a serial number file is created or when a self signed
2534 certificate is created using 'openssl req -x509'. The initial serial
2535 number file is created using 'openssl x509 -next_serial' in CA.pl
2536 rather than being initialized to 1.
2539 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2541 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2542 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2543 [Joe Orton, Steve Henson]
2545 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2547 [Joe Orton, Steve Henson]
2549 *) Make it possible to have multiple active certificates with the same
2550 subject in the CA index file. This is done only if the keyword
2551 'unique_subject' is set to 'no' in the main CA section (default
2552 if 'CA_default') of the configuration file. The value is saved
2553 with the database itself in a separate index attribute file,
2554 named like the index file with '.attr' appended to the name.
2557 *) X509 verify fixes. Disable broken certificate workarounds when
2558 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2559 keyUsage extension present. Don't accept CRLs with unhandled critical
2560 extensions: since verify currently doesn't process CRL extensions this
2561 rejects a CRL with *any* critical extensions. Add new verify error codes
2565 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2566 A clarification of RFC2560 will require the use of OCTET STRINGs and
2567 some implementations cannot handle the current raw format. Since OpenSSL
2568 copies and compares OCSP nonces as opaque blobs without any attempt at
2569 parsing them this should not create any compatibility issues.
2572 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2573 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2574 this HMAC (and other) operations are several times slower than OpenSSL
2578 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2579 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2581 *) Use the correct content when signing type "other".
2584 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2586 *) Fix various bugs revealed by running the NISCC test suite:
2588 Stop out of bounds reads in the ASN1 code when presented with
2589 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2591 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2593 If verify callback ignores invalid public key errors don't try to check
2594 certificate signature with the NULL public key.
2598 *) New -ignore_err option in ocsp application to stop the server
2599 exiting on the first error in a request.
2602 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2603 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2607 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2608 extra data after the compression methods not only for TLS 1.0
2609 but also for SSL 3.0 (as required by the specification).
2610 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2612 *) Change X509_certificate_type() to mark the key as exported/exportable
2613 when it's 512 *bits* long, not 512 bytes.
2616 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2617 blocks during encryption.
2620 *) Various fixes to base64 BIO and non blocking I/O. On write
2621 flushes were not handled properly if the BIO retried. On read
2622 data was not being buffered properly and had various logic bugs.
2623 This also affects blocking I/O when the data being decoded is a
2627 *) Various S/MIME bugfixes and compatibility changes:
2628 output correct application/pkcs7 MIME type if
2629 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2630 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2631 of files as .eml work). Correctly handle very long lines in MIME
2635 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2637 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2638 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2639 a protocol version number mismatch like a decryption error
2640 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2643 *) Turn on RSA blinding by default in the default implementation
2644 to avoid a timing attack. Applications that don't want it can call
2645 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2646 They would be ill-advised to do so in most cases.
2647 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2649 *) Change RSA blinding code so that it works when the PRNG is not
2650 seeded (in this case, the secret RSA exponent is abused as
2651 an unpredictable seed -- if it is not unpredictable, there
2652 is no point in blinding anyway). Make RSA blinding thread-safe
2653 by remembering the creator's thread ID in rsa->blinding and
2654 having all other threads use local one-time blinding factors
2655 (this requires more computation than sharing rsa->blinding, but
2656 avoids excessive locking; and if an RSA object is not shared
2657 between threads, blinding will still be very fast).
2660 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2661 ENGINE as defaults for all supported algorithms irrespective of
2662 the 'flags' parameter. 'flags' is now honoured, so applications
2663 should make sure they are passing it correctly.
2666 *) Target "mingw" now allows native Windows code to be generated in
2667 the Cygwin environment as well as with the MinGW compiler.
2670 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2672 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2673 via timing by performing a MAC computation even if incorrrect
2674 block cipher padding has been found. This is a countermeasure
2675 against active attacks where the attacker has to distinguish
2676 between bad padding and a MAC verification error. (CVE-2003-0078)
2678 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2679 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2680 Martin Vuagnoux (EPFL, Ilion)]
2682 *) Make the no-err option work as intended. The intention with no-err
2683 is not to have the whole error stack handling routines removed from
2684 libcrypto, it's only intended to remove all the function name and
2685 reason texts, thereby removing some of the footprint that may not
2686 be interesting if those errors aren't displayed anyway.
2688 NOTE: it's still possible for any application or module to have it's
2689 own set of error texts inserted. The routines are there, just not
2690 used by default when no-err is given.
2693 *) Add support for FreeBSD on IA64.
2694 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2696 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2697 Kerberos function mit_des_cbc_cksum(). Before this change,
2698 the value returned by DES_cbc_cksum() was like the one from
2699 mit_des_cbc_cksum(), except the bytes were swapped.
2700 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2702 *) Allow an application to disable the automatic SSL chain building.
2703 Before this a rather primitive chain build was always performed in
2704 ssl3_output_cert_chain(): an application had no way to send the
2705 correct chain if the automatic operation produced an incorrect result.
2707 Now the chain builder is disabled if either:
2709 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2711 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2713 The reasoning behind this is that an application would not want the
2714 auto chain building to take place if extra chain certificates are
2715 present and it might also want a means of sending no additional
2716 certificates (for example the chain has two certificates and the
2720 *) Add the possibility to build without the ENGINE framework.
2721 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2723 *) Under Win32 gmtime() can return NULL: check return value in
2724 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2727 *) DSA routines: under certain error conditions uninitialized BN objects
2728 could be freed. Solution: make sure initialization is performed early
2729 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2730 Nils Larsch <nla@trustcenter.de> via PR#459)
2733 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2734 checked on reconnect on the client side, therefore session resumption
2735 could still fail with a "ssl session id is different" error. This
2736 behaviour is masked when SSL_OP_ALL is used due to
2737 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2738 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2739 followup to PR #377.
2742 *) IA-32 assembler support enhancements: unified ELF targets, support
2743 for SCO/Caldera platforms, fix for Cygwin shared build.
2746 *) Add support for FreeBSD on sparc64. As a consequence, support for
2747 FreeBSD on non-x86 processors is separate from x86 processors on
2748 the config script, much like the NetBSD support.
2749 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2751 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2753 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2756 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2757 code (06) was taken as the first octet of the session ID and the last
2758 octet was ignored consequently. As a result SSLv2 client side session
2759 caching could not have worked due to the session ID mismatch between
2761 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2765 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2766 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2770 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2771 seems that in spite of existing for more than a year, many application
2772 author have done nothing to provide the necessary callbacks, which
2773 means that this particular engine will not work properly anywhere.
2774 This is a very unfortunate situation which forces us, in the name
2775 of usability, to give the hw_ncipher.c a static lock, which is part
2777 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2778 appear in 0.9.8 or later. We EXPECT application authors to have
2779 dealt properly with this when 0.9.8 is released (unless we actually
2780 make such changes in the libcrypto locking code that changes will
2781 have to be made anyway).
2784 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2785 octets have been read, EOF or an error occurs. Without this change
2786 some truncated ASN1 structures will not produce an error.
2789 *) Disable Heimdal support, since it hasn't been fully implemented.
2790 Still give the possibility to force the use of Heimdal, but with
2791 warnings and a request that patches get sent to openssl-dev.
2794 *) Add the VC-CE target, introduce the WINCE sysname, and add
2795 INSTALL.WCE and appropriate conditionals to make it build.
2796 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2798 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2799 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2800 edit numbers of the version.
2801 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2803 *) Introduce safe string copy and catenation functions
2804 (BUF_strlcpy() and BUF_strlcat()).
2805 [Ben Laurie (CHATS) and Richard Levitte]
2807 *) Avoid using fixed-size buffers for one-line DNs.
2808 [Ben Laurie (CHATS)]
2810 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2811 resizing buffers containing secrets, and use where appropriate.
2812 [Ben Laurie (CHATS)]
2814 *) Avoid using fixed size buffers for configuration file location.
2815 [Ben Laurie (CHATS)]
2817 *) Avoid filename truncation for various CA files.
2818 [Ben Laurie (CHATS)]
2820 *) Use sizeof in preference to magic numbers.
2821 [Ben Laurie (CHATS)]
2823 *) Avoid filename truncation in cert requests.
2824 [Ben Laurie (CHATS)]
2826 *) Add assertions to check for (supposedly impossible) buffer
2828 [Ben Laurie (CHATS)]
2830 *) Don't cache truncated DNS entries in the local cache (this could
2831 potentially lead to a spoofing attack).
2832 [Ben Laurie (CHATS)]
2834 *) Fix various buffers to be large enough for hex/decimal
2835 representations in a platform independent manner.
2836 [Ben Laurie (CHATS)]
2838 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2839 resizing buffers containing secrets, and use where appropriate.
2840 [Ben Laurie (CHATS)]
2842 *) Add BIO_indent() to avoid much slightly worrying code to do
2844 [Ben Laurie (CHATS)]
2846 *) Convert sprintf()/BIO_puts() to BIO_printf().
2847 [Ben Laurie (CHATS)]
2849 *) buffer_gets() could terminate with the buffer only half
2851 [Ben Laurie (CHATS)]
2853 *) Add assertions to prevent user-supplied crypto functions from
2854 overflowing internal buffers by having large block sizes, etc.
2855 [Ben Laurie (CHATS)]
2857 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2859 [Ben Laurie (CHATS)]
2861 *) Eliminate unused copy of key in RC4.
2862 [Ben Laurie (CHATS)]
2864 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2865 [Ben Laurie (CHATS)]
2867 *) Fix off-by-one error in EGD path.
2868 [Ben Laurie (CHATS)]
2870 *) If RANDFILE path is too long, ignore instead of truncating.
2871 [Ben Laurie (CHATS)]
2873 *) Eliminate unused and incorrectly sized X.509 structure
2875 [Ben Laurie (CHATS)]
2877 *) Eliminate unused and dangerous function knumber().
2878 [Ben Laurie (CHATS)]
2880 *) Eliminate unused and dangerous structure, KSSL_ERR.
2881 [Ben Laurie (CHATS)]
2883 *) Protect against overlong session ID context length in an encoded
2884 session object. Since these are local, this does not appear to be
2886 [Ben Laurie (CHATS)]
2888 *) Change from security patch (see 0.9.6e below) that did not affect
2889 the 0.9.6 release series:
2891 Remote buffer overflow in SSL3 protocol - an attacker could
2892 supply an oversized master key in Kerberos-enabled versions.
2894 [Ben Laurie (CHATS)]
2896 *) Change the SSL kerb5 codes to match RFC 2712.
2899 *) Make -nameopt work fully for req and add -reqopt switch.
2900 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2902 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2903 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2905 *) Make sure tests can be performed even if the corresponding algorithms
2906 have been removed entirely. This was also the last step to make
2907 OpenSSL compilable with DJGPP under all reasonable conditions.
2908 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2910 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2911 to allow version independent disabling of normally unselected ciphers,
2912 which may be activated as a side-effect of selecting a single cipher.
2914 (E.g., cipher list string "RSA" enables ciphersuites that are left
2915 out of "ALL" because they do not provide symmetric encryption.
2916 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2917 [Lutz Jaenicke, Bodo Moeller]
2919 *) Add appropriate support for separate platform-dependent build
2920 directories. The recommended way to make a platform-dependent
2921 build directory is the following (tested on Linux), maybe with
2924 # Place yourself outside of the OpenSSL source tree. In
2925 # this example, the environment variable OPENSSL_SOURCE
2926 # is assumed to contain the absolute OpenSSL source directory.
2927 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2928 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2929 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2930 mkdir -p `dirname $F`
2931 ln -s $OPENSSL_SOURCE/$F $F
2934 To be absolutely sure not to disturb the source tree, a "make clean"
2935 is a good thing. If it isn't successfull, don't worry about it,
2936 it probably means the source directory is very clean.
2939 *) Make sure any ENGINE control commands make local copies of string
2940 pointers passed to them whenever necessary. Otherwise it is possible
2941 the caller may have overwritten (or deallocated) the original string
2942 data when a later ENGINE operation tries to use the stored values.
2943 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2945 *) Improve diagnostics in file reading and command-line digests.
2946 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2948 *) Add AES modes CFB and OFB to the object database. Correct an
2949 error in AES-CFB decryption.
2952 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2953 allows existing EVP_CIPHER_CTX structures to be reused after
2954 calling EVP_*Final(). This behaviour is used by encryption
2955 BIOs and some applications. This has the side effect that
2956 applications must explicitly clean up cipher contexts with
2957 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2960 *) Check the values of dna and dnb in bn_mul_recursive before calling
2961 bn_mul_comba (a non zero value means the a or b arrays do not contain
2962 n2 elements) and fallback to bn_mul_normal if either is not zero.
2965 *) Fix escaping of non-ASCII characters when using the -subj option
2966 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2969 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2970 form for "surname", serialNumber has no short form.
2971 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2972 therefore remove "mail" short name for "internet 7".
2973 The OID for unique identifiers in X509 certificates is
2974 x500UniqueIdentifier, not uniqueIdentifier.
2975 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2978 *) Add an "init" command to the ENGINE config module and auto initialize
2979 ENGINEs. Without any "init" command the ENGINE will be initialized
2980 after all ctrl commands have been executed on it. If init=1 the
2981 ENGINE is initailized at that point (ctrls before that point are run
2982 on the uninitialized ENGINE and after on the initialized one). If
2983 init=0 then the ENGINE will not be iniatialized at all.
2986 *) Fix the 'app_verify_callback' interface so that the user-defined
2987 argument is actually passed to the callback: In the
2988 SSL_CTX_set_cert_verify_callback() prototype, the callback
2989 declaration has been changed from
2992 int (*cb)(X509_STORE_CTX *,void *);
2993 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2994 i=s->ctx->app_verify_callback(&ctx)
2995 has been changed into
2996 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2998 To update applications using SSL_CTX_set_cert_verify_callback(),
2999 a dummy argument can be added to their callback functions.
3000 [D. K. Smetters <smetters@parc.xerox.com>]
3002 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3003 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3005 *) Add and OPENSSL_LOAD_CONF define which will cause
3006 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3007 This allows older applications to transparently support certain
3008 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3009 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3010 load the config file and OPENSSL_add_all_algorithms_conf() which will
3011 always load it have also been added.
3014 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3015 Adjust NIDs and EVP layer.
3016 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3018 *) Config modules support in openssl utility.
3020 Most commands now load modules from the config file,
3021 though in a few (such as version) this isn't done
3022 because it couldn't be used for anything.
3024 In the case of ca and req the config file used is
3025 the same as the utility itself: that is the -config
3026 command line option can be used to specify an
3030 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3031 use "openssl_conf" if filename is NULL use default openssl config file.
3034 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3035 config section name. Add a new flag to tolerate a missing config file
3036 and move code to CONF_modules_load_file().
3039 *) Support for crypto accelerator cards from Accelerated Encryption
3040 Processing, www.aep.ie. (Use engine 'aep')
3041 The support was copied from 0.9.6c [engine] and adapted/corrected
3042 to work with the new engine framework.
3043 [AEP Inc. and Richard Levitte]
3045 *) Support for SureWare crypto accelerator cards from Baltimore
3046 Technologies. (Use engine 'sureware')
3047 The support was copied from 0.9.6c [engine] and adapted
3048 to work with the new engine framework.
3051 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3052 make the newer ENGINE framework commands for the CHIL engine work.
3053 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3055 *) Make it possible to produce shared libraries on ReliantUNIX.
3056 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3058 *) Add the configuration target debug-linux-ppro.
3059 Make 'openssl rsa' use the general key loading routines
3060 implemented in apps.c, and make those routines able to
3061 handle the key format FORMAT_NETSCAPE and the variant
3063 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3065 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3066 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3068 *) Add -keyform to rsautl, and document -engine.
3069 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3071 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3072 BIO_R_NO_SUCH_FILE error code rather than the generic
3073 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3076 *) Add new functions
3078 ERR_peek_last_error_line
3079 ERR_peek_last_error_line_data.
3080 These are similar to
3083 ERR_peek_error_line_data,
3084 but report on the latest error recorded rather than the first one
3085 still in the error queue.
3086 [Ben Laurie, Bodo Moeller]
3088 *) default_algorithms option in ENGINE config module. This allows things
3090 default_algorithms = ALL
3091 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3094 *) Prelminary ENGINE config module.
3097 *) New experimental application configuration code.
3100 *) Change the AES code to follow the same name structure as all other
3101 symmetric ciphers, and behave the same way. Move everything to
3102 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3103 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3105 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3106 [Ben Laurie and Theo de Raadt]
3108 *) Add option to output public keys in req command.
3109 [Massimiliano Pala madwolf@openca.org]
3111 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3112 (up to about 10% better than before for P-192 and P-224).
3115 *) New functions/macros
3117 SSL_CTX_set_msg_callback(ctx, cb)
3118 SSL_CTX_set_msg_callback_arg(ctx, arg)
3119 SSL_set_msg_callback(ssl, cb)
3120 SSL_set_msg_callback_arg(ssl, arg)
3122 to request calling a callback function
3124 void cb(int write_p, int version, int content_type,
3125 const void *buf, size_t len, SSL *ssl, void *arg)
3127 whenever a protocol message has been completely received
3128 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3129 protocol version according to which the SSL library interprets
3130 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3131 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3132 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3133 specification (change_cipher_spec(20), alert(21), handshake(22)).
3134 'buf' and 'len' point to the actual message, 'ssl' to the
3135 SSL object, and 'arg' is the application-defined value set by
3136 SSL[_CTX]_set_msg_callback_arg().
3138 'openssl s_client' and 'openssl s_server' have new '-msg' options
3139 to enable a callback that displays all protocol messages.
3142 *) Change the shared library support so shared libraries are built as
3143 soon as the corresponding static library is finished, and thereby get
3144 openssl and the test programs linked against the shared library.
3145 This still only happens when the keyword "shard" has been given to
3146 the configuration scripts.
3148 NOTE: shared library support is still an experimental thing, and
3149 backward binary compatibility is still not guaranteed.
3150 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3152 *) Add support for Subject Information Access extension.
3153 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3155 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3156 additional bytes when new memory had to be allocated, not just
3157 when reusing an existing buffer.
3160 *) New command line and configuration option 'utf8' for the req command.
3161 This allows field values to be specified as UTF8 strings.
3164 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3165 runs for the former and machine-readable output for the latter.
3168 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3169 of the e-mail address in the DN (i.e., it will go into a certificate
3170 extension only). The new configuration file option 'email_in_dn = no'
3171 has the same effect.
3172 [Massimiliano Pala madwolf@openca.org]
3174 *) Change all functions with names starting with des_ to be starting
3175 with DES_ instead. Add wrappers that are compatible with libdes,
3176 but are named _ossl_old_des_*. Finally, add macros that map the
3177 des_* symbols to the corresponding _ossl_old_des_* if libdes
3178 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3179 desired, the des_* symbols will be mapped to DES_*, with one
3182 Since we provide two compatibility mappings, the user needs to
3183 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3184 compatibility is desired. The default (i.e., when that macro
3185 isn't defined) is OpenSSL 0.9.6c compatibility.
3187 There are also macros that enable and disable the support of old
3188 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3189 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3190 are defined, the default will apply: to support the old des routines.
3192 In either case, one must include openssl/des.h to get the correct
3193 definitions. Do not try to just include openssl/des_old.h, that
3196 NOTE: This is a major break of an old API into a new one. Software
3197 authors are encouraged to switch to the DES_ style functions. Some
3198 time in the future, des_old.h and the libdes compatibility functions
3199 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3200 default), and then completely removed.
3203 *) Test for certificates which contain unsupported critical extensions.
3204 If such a certificate is found during a verify operation it is
3205 rejected by default: this behaviour can be overridden by either
3206 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3207 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3208 X509_supported_extension() has also been added which returns 1 if a
3209 particular extension is supported.
3212 *) Modify the behaviour of EVP cipher functions in similar way to digests
3213 to retain compatibility with existing code.
3216 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3217 compatibility with existing code. In particular the 'ctx' parameter does
3218 not have to be to be initialized before the call to EVP_DigestInit() and
3219 it is tidied up after a call to EVP_DigestFinal(). New function
3220 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3221 EVP_MD_CTX_copy() changed to not require the destination to be
3222 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3223 requires the destination to be valid.
3225 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3226 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3229 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3230 so that complete 'Handshake' protocol structures are kept in memory
3231 instead of overwriting 'msg_type' and 'length' with 'body' data.
3234 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3235 [Massimo Santin via Richard Levitte]
3237 *) Major restructuring to the underlying ENGINE code. This includes
3238 reduction of linker bloat, separation of pure "ENGINE" manipulation
3239 (initialisation, etc) from functionality dealing with implementations
3240 of specific crypto iterfaces. This change also introduces integrated
3241 support for symmetric ciphers and digest implementations - so ENGINEs
3242 can now accelerate these by providing EVP_CIPHER and EVP_MD
3243 implementations of their own. This is detailed in crypto/engine/README
3244 as it couldn't be adequately described here. However, there are a few
3245 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3246 were changed in the original introduction of ENGINE code have now
3247 reverted back - the hooking from this code to ENGINE is now a good
3248 deal more passive and at run-time, operations deal directly with
3249 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3250 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3251 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3252 they were not being used by the framework as there is no concept of a
3253 BIGNUM_METHOD and they could not be generalised to the new
3254 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3255 ENGINE_cpy() has been removed as it cannot be consistently defined in
3259 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3262 *) Change mkdef.pl to sort symbols that get the same entry number,
3263 and make sure the automatically generated functions ERR_load_*
3264 become part of libeay.num as well.
3267 *) New function SSL_renegotiate_pending(). This returns true once
3268 renegotiation has been requested (either SSL_renegotiate() call
3269 or HelloRequest/ClientHello receveived from the peer) and becomes
3270 false once a handshake has been completed.
3271 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3272 sends a HelloRequest, but does not ensure that a handshake takes
3273 place. SSL_renegotiate_pending() is useful for checking if the
3274 client has followed the request.)
3277 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3278 By default, clients may request session resumption even during
3279 renegotiation (if session ID contexts permit); with this option,
3280 session resumption is possible only in the first handshake.
3282 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3283 more bits available for options that should not be part of
3284 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3287 *) Add some demos for certificate and certificate request creation.
3290 *) Make maximum certificate chain size accepted from the peer application
3291 settable (SSL*_get/set_max_cert_list()), as proposed by
3292 "Douglas E. Engert" <deengert@anl.gov>.
3295 *) Add support for shared libraries for Unixware-7
3296 (Boyd Lynn Gerber <gerberb@zenez.com>).
3299 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3300 be done prior to destruction. Use this to unload error strings from
3301 ENGINEs that load their own error strings. NB: This adds two new API
3302 functions to "get" and "set" this destroy handler in an ENGINE.
3305 *) Alter all existing ENGINE implementations (except "openssl" and
3306 "openbsd") to dynamically instantiate their own error strings. This
3307 makes them more flexible to be built both as statically-linked ENGINEs
3308 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3309 Also, add stub code to each that makes building them as self-contained
3310 shared-libraries easier (see README.ENGINE).
3313 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3314 implementations into applications that are completely implemented in
3315 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3316 commands that can be used to configure what shared-library to load and
3317 to control aspects of the way it is handled. Also, made an update to
3318 the README.ENGINE file that brings its information up-to-date and
3319 provides some information and instructions on the "dynamic" ENGINE
3320 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3323 *) Make it possible to unload ranges of ERR strings with a new
3324 "ERR_unload_strings" function.
3327 *) Add a copy() function to EVP_MD.
3330 *) Make EVP_MD routines take a context pointer instead of just the
3331 md_data void pointer.
3334 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3335 that the digest can only process a single chunk of data
3336 (typically because it is provided by a piece of
3337 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3338 is only going to provide a single chunk of data, and hence the
3339 framework needn't accumulate the data for oneshot drivers.
3342 *) As with "ERR", make it possible to replace the underlying "ex_data"
3343 functions. This change also alters the storage and management of global
3344 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3345 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3346 index counters. The API functions that use this state have been changed
3347 to take a "class_index" rather than pointers to the class's local STACK
3348 and counter, and there is now an API function to dynamically create new
3349 classes. This centralisation allows us to (a) plug a lot of the
3350 thread-safety problems that existed, and (b) makes it possible to clean
3351 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3352 such data would previously have always leaked in application code and
3353 workarounds were in place to make the memory debugging turn a blind eye
3354 to it. Application code that doesn't use this new function will still
3355 leak as before, but their memory debugging output will announce it now
3356 rather than letting it slide.
3358 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3359 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3360 has a return value to indicate success or failure.
3363 *) Make it possible to replace the underlying "ERR" functions such that the
3364 global state (2 LHASH tables and 2 locks) is only used by the "default"
3365 implementation. This change also adds two functions to "get" and "set"
3366 the implementation prior to it being automatically set the first time
3367 any other ERR function takes place. Ie. an application can call "get",
3368 pass the return value to a module it has just loaded, and that module
3369 can call its own "set" function using that value. This means the
3370 module's "ERR" operations will use (and modify) the error state in the
3371 application and not in its own statically linked copy of OpenSSL code.
3374 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3375 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3376 the operation, and provides a more encapsulated way for external code
3377 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3378 to use these functions rather than manually incrementing the counts.
3380 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3383 *) Add EVP test program.
3386 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3389 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3390 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3391 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3392 These allow a CRL to be built without having to access X509_CRL fields
3393 directly. Modify 'ca' application to use new functions.
3396 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3397 bug workarounds. Rollback attack detection is a security feature.
3398 The problem will only arise on OpenSSL servers when TLSv1 is not
3399 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3400 Software authors not wanting to support TLSv1 will have special reasons
3401 for their choice and can explicitly enable this option.
3402 [Bodo Moeller, Lutz Jaenicke]
3404 *) Rationalise EVP so it can be extended: don't include a union of
3405 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3406 (similar to those existing for EVP_CIPHER_CTX).
3411 EVP_MD_CTX_init(&md); /* new function call */
3412 EVP_DigestInit(&md, EVP_sha1());
3413 EVP_DigestUpdate(&md, in, len);
3414 EVP_DigestFinal(&md, out, NULL);
3415 EVP_MD_CTX_cleanup(&md); /* new function call */
3419 *) Make DES key schedule conform to the usual scheme, as well as
3420 correcting its structure. This means that calls to DES functions
3421 now have to pass a pointer to a des_key_schedule instead of a
3422 plain des_key_schedule (which was actually always a pointer
3425 des_key_schedule ks;
3427 des_set_key_checked(..., &ks);
3428 des_ncbc_encrypt(..., &ks, ...);
3430 (Note that a later change renames 'des_...' into 'DES_...'.)
3433 *) Initial reduction of linker bloat: the use of some functions, such as
3434 PEM causes large amounts of unused functions to be linked in due to
3435 poor organisation. For example pem_all.c contains every PEM function
3436 which has a knock on effect of linking in large amounts of (unused)
3437 ASN1 code. Grouping together similar functions and splitting unrelated
3438 functions prevents this.
3441 *) Cleanup of EVP macros.
3444 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3445 correct _ecb suffix.
3448 *) Add initial OCSP responder support to ocsp application. The
3449 revocation information is handled using the text based index
3450 use by the ca application. The responder can either handle
3451 requests generated internally, supplied in files (for example
3452 via a CGI script) or using an internal minimal server.
3455 *) Add configuration choices to get zlib compression for TLS.
3458 *) Changes to Kerberos SSL for RFC 2712 compliance:
3459 1. Implemented real KerberosWrapper, instead of just using
3460 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3461 2. Implemented optional authenticator field of KerberosWrapper.
3463 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3464 and authenticator structs; see crypto/krb5/.
3466 Generalized Kerberos calls to support multiple Kerberos libraries.
3467 [Vern Staats <staatsvr@asc.hpc.mil>,
3468 Jeffrey Altman <jaltman@columbia.edu>
3469 via Richard Levitte]
3471 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3472 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3473 values for each of the key sizes rather than having just
3474 parameters (and 'speed' generating keys each time).
3477 *) Speed up EVP routines.
3480 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3481 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3482 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3483 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3485 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3486 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3487 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3490 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3492 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3495 *) Added the OS2-EMX target.
3496 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3498 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3499 to support NCONF routines in extension code. New function CONF_set_nconf()
3500 to allow functions which take an NCONF to also handle the old LHASH
3501 structure: this means that the old CONF compatible routines can be
3502 retained (in particular wrt extensions) without having to duplicate the
3503 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3506 *) Enhance the general user interface with mechanisms for inner control
3507 and with possibilities to have yes/no kind of prompts.
3510 *) Change all calls to low level digest routines in the library and
3511 applications to use EVP. Add missing calls to HMAC_cleanup() and
3512 don't assume HMAC_CTX can be copied using memcpy().
3513 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3515 *) Add the possibility to control engines through control names but with
3516 arbitrary arguments instead of just a string.
3517 Change the key loaders to take a UI_METHOD instead of a callback
3518 function pointer. NOTE: this breaks binary compatibility with earlier
3519 versions of OpenSSL [engine].
3520 Adapt the nCipher code for these new conditions and add a card insertion
3524 *) Enhance the general user interface with mechanisms to better support
3525 dialog box interfaces, application-defined prompts, the possibility
3526 to use defaults (for example default passwords from somewhere else)
3527 and interrupts/cancellations.
3530 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3531 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3534 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3535 tidy up some unnecessarily weird code in 'sk_new()').
3536 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3538 *) Change the key loading routines for ENGINEs to use the same kind
3539 callback (pem_password_cb) as all other routines that need this
3543 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3544 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3545 than this minimum value is recommended.
3548 *) New random seeder for OpenVMS, using the system process statistics
3549 that are easily reachable.
3552 *) Windows apparently can't transparently handle global
3553 variables defined in DLLs. Initialisations such as:
3555 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3557 wont compile. This is used by the any applications that need to
3558 declare their own ASN1 modules. This was fixed by adding the option
3559 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3560 needed for static libraries under Win32.
3563 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3564 setting of purpose and trust fields. New X509_STORE trust and
3565 purpose functions and tidy up setting in other SSL functions.
3568 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3569 structure. These are inherited by X509_STORE_CTX when it is
3570 initialised. This allows various defaults to be set in the
3571 X509_STORE structure (such as flags for CRL checking and custom
3572 purpose or trust settings) for functions which only use X509_STORE_CTX
3573 internally such as S/MIME.
3575 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3576 trust settings if they are not set in X509_STORE. This allows X509_STORE
3577 purposes and trust (in S/MIME for example) to override any set by default.
3579 Add command line options for CRL checking to smime, s_client and s_server
3583 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3584 are set then the CRL is looked up in the X509_STORE structure and
3585 its validity and signature checked, then if the certificate is found
3586 in the CRL the verify fails with a revoked error.
3588 Various new CRL related callbacks added to X509_STORE_CTX structure.
3590 Command line options added to 'verify' application to support this.
3592 This needs some additional work, such as being able to handle multiple
3593 CRLs with different times, extension based lookup (rather than just
3594 by subject name) and ultimately more complete V2 CRL extension
3598 *) Add a general user interface API (crypto/ui/). This is designed
3599 to replace things like des_read_password and friends (backward
3600 compatibility functions using this new API are provided).
3601 The purpose is to remove prompting functions from the DES code
3602 section as well as provide for prompting through dialog boxes in
3603 a window system and the like.
3606 *) Add "ex_data" support to ENGINE so implementations can add state at a
3607 per-structure level rather than having to store it globally.
3610 *) Make it possible for ENGINE structures to be copied when retrieved by
3611 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3612 This causes the "original" ENGINE structure to act like a template,
3613 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3614 operational state can be localised to each ENGINE structure, despite the
3615 fact they all share the same "methods". New ENGINE structures returned in
3616 this case have no functional references and the return value is the single
3617 structural reference. This matches the single structural reference returned
3618 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3622 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3623 needs to match any other type at all we need to manually clear the
3627 *) Changes to the "openssl engine" utility to include;
3628 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3629 about an ENGINE's available control commands.
3630 - executing control commands from command line arguments using the
3631 '-pre' and '-post' switches. '-post' is only used if '-t' is
3632 specified and the ENGINE is successfully initialised. The syntax for
3633 the individual commands are colon-separated, for example;
3634 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3637 *) New dynamic control command support for ENGINEs. ENGINEs can now
3638 declare their own commands (numbers), names (strings), descriptions,
3639 and input types for run-time discovery by calling applications. A
3640 subset of these commands are implicitly classed as "executable"
3641 depending on their input type, and only these can be invoked through
3642 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3643 can be based on user input, config files, etc). The distinction is
3644 that "executable" commands cannot return anything other than a boolean
3645 result and can only support numeric or string input, whereas some
3646 discoverable commands may only be for direct use through
3647 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3648 pointers, or other custom uses. The "executable" commands are to
3649 support parameterisations of ENGINE behaviour that can be
3650 unambiguously defined by ENGINEs and used consistently across any
3651 OpenSSL-based application. Commands have been added to all the
3652 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3653 control over shared-library paths without source code alterations.
3656 *) Changed all ENGINE implementations to dynamically allocate their
3657 ENGINEs rather than declaring them statically. Apart from this being
3658 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3659 this also allows the implementations to compile without using the
3660 internal engine_int.h header.
3663 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3664 'const' value. Any code that should be able to modify a RAND_METHOD
3665 should already have non-const pointers to it (ie. they should only
3666 modify their own ones).
3669 *) Made a variety of little tweaks to the ENGINE code.
3670 - "atalla" and "ubsec" string definitions were moved from header files
3671 to C code. "nuron" string definitions were placed in variables
3672 rather than hard-coded - allowing parameterisation of these values
3673 later on via ctrl() commands.
3674 - Removed unused "#if 0"'d code.
3675 - Fixed engine list iteration code so it uses ENGINE_free() to release
3676 structural references.
3677 - Constified the RAND_METHOD element of ENGINE structures.
3678 - Constified various get/set functions as appropriate and added
3679 missing functions (including a catch-all ENGINE_cpy that duplicates
3680 all ENGINE values onto a new ENGINE except reference counts/state).
3681 - Removed NULL parameter checks in get/set functions. Setting a method
3682 or function to NULL is a way of cancelling out a previously set
3683 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3684 and doesn't justify the extra error symbols and code.
3685 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3686 flags from engine_int.h to engine.h.
3687 - Changed prototypes for ENGINE handler functions (init(), finish(),
3688 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3691 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3692 to the algorithm using long division. The binary algorithm can be
3693 used only if the modulus is odd. On 32-bit systems, it is faster
projects / openssl.git / blob