5 Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
7 *) Initial experimental support for explicitly trusted non-root CAs.
8 OpenSSL still tries to build a complete chain to a root but if an
9 intermediate CA has a trust setting included that is used. The first
10 setting is used: whether to trust or reject.
13 *) New -verify_name option in command line utilities to set verification
17 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
18 Add CMAC pkey methods.
21 *) Experiemental regnegotiation in s_server -www mode. If the client
22 browses /reneg connection is renegotiated. If /renegcert it is
23 renegotiated requesting a certificate.
26 *) Add an "external" session cache for debugging purposes to s_server. This
27 should help trace issues which normally are only apparent in deployed
28 multi-process servers.
31 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
32 a few changes are required:
34 Add SSL_OP_NO_TLSv1_1 flag.
36 Update version checking logic to handle version 1.1.
37 Add explicit IV handling (ported from DTLS code).
38 Add command line options to s_client/s_server.
41 *) Experiemental password based recipient info support for CMS library:
45 *) Split password based encryption into PBES2 and PBKDF2 functions. This
46 neatly separates the code into cipher and PBE sections and is required
47 for some algorithms that split PBES2 into separate pieces (such as
51 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
52 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
53 BIO_set_cipher() and some obscure PEM functions were changed so they
54 can now return an error. The RAND changes required a change to the
55 RAND_METHOD structure.
58 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
59 a gcc attribute to warn if the result of a function is ignored. This
60 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
61 whose return value is often ignored.
64 Changes between 0.9.8m (?) and 1.0.0 [xx XXX xxxx]
66 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
67 context. The operation can be customised via the ctrl mechanism in
68 case ENGINEs want to include additional functionality.
71 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
74 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
75 output hashes compatible with older versions of OpenSSL.
76 [Willy Weisz <weisz@vcpc.univie.ac.at>]
78 *) Fix compression algorithm handling: if resuming a session use the
79 compression algorithm of the resumed session instead of determining
80 it from client hello again. Don't allow server to change algorithm.
83 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
84 change when encrypting or decrypting.
87 *) Add load_crls() function to apps tidying load_certs() too. Add option
88 to verify utility to allow additional CRLs to be included.
91 *) Update OCSP request code to permit adding custom headers to the request:
92 some responders need this.
95 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
97 [Julia Lawall <julia@diku.dk>]
99 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
100 needlessly dereferenced structures, used obsolete functions and
101 didn't handle all updated verify codes correctly.
104 *) Disable MD2 in the default configuration.
107 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
108 indicate the initial BIO being pushed or popped. This makes it possible
109 to determine whether the BIO is the one explicitly called or as a result
110 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
111 it handles reference counts correctly and doesn't zero out the I/O bio
112 when it is not being explicitly popped. WARNING: applications which
113 included workarounds for the old buggy behaviour will need to be modified
114 or they could free up already freed BIOs.
117 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
118 renaming to all platforms (within the 0.9.8 branch, this was
119 done conditionally on Netware platforms to avoid a name clash).
120 [Guenter <lists@gknw.net>]
122 *) Add ECDHE and PSK support to DTLS.
123 [Michael Tuexen <tuexen@fh-muenster.de>]
125 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
129 *) Add "missing" function EVP_MD_flags() (without this the only way to
130 retrieve a digest flags is by accessing the structure directly. Update
131 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
132 or cipher is registered as in the "from" argument. Print out all
133 registered digests in the dgst usage message instead of manually
134 attempting to work them out.
137 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
138 this allows the use of compression and extensions. Change default cipher
139 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
140 by default unless an application cipher string requests it.
143 *) Alter match criteria in PKCS12_parse(). It used to try to use local
144 key ids to find matching certificates and keys but some PKCS#12 files
145 don't follow the (somewhat unwritten) rules and this strategy fails.
146 Now just gather all certificates together and the first private key
147 then look for the first certificate that matches the key.
150 *) Support use of registered digest and cipher names for dgst and cipher
151 commands instead of having to add each one as a special case. So now
158 openssl dgst -sha256 foo
160 and this works for ENGINE based algorithms too.
164 *) Update Gost ENGINE to support parameter files.
165 [Victor B. Wagner <vitus@cryptocom.ru>]
167 *) Support GeneralizedTime in ca utility.
168 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
170 *) Enhance the hash format used for certificate directory links. The new
171 form uses the canonical encoding (meaning equivalent names will work
172 even if they aren't identical) and uses SHA1 instead of MD5. This form
173 is incompatible with the older format and as a result c_rehash should
174 be used to rebuild symbolic links.
177 *) Make PKCS#8 the default write format for private keys, replacing the
178 traditional format. This form is standardised, more secure and doesn't
179 include an implicit MD5 dependency.
182 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
183 committed to OpenSSL should pass this lot as a minimum.
186 *) Add session ticket override functionality for use by EAP-FAST.
187 [Jouni Malinen <j@w1.fi>]
189 *) Modify HMAC functions to return a value. Since these can be implemented
190 in an ENGINE errors can occur.
193 *) Type-checked OBJ_bsearch_ex.
196 *) Type-checked OBJ_bsearch. Also some constification necessitated
197 by type-checking. Still to come: TXT_DB, bsearch(?),
198 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
202 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
203 seconds to a tm structure directly, instead of going through OS
204 specific date routines. This avoids any issues with OS routines such
205 as the year 2038 bug. New *_adj() functions for ASN1 time structures
206 and X509_time_adj_ex() to cover the extended range. The existing
207 X509_time_adj() is still usable and will no longer have any date issues.
210 *) Delta CRL support. New use deltas option which will attempt to locate
211 and search any appropriate delta CRLs available.
213 This work was sponsored by Google.
216 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
217 code and add additional score elements. Validate alternate CRL paths
218 as part of the CRL checking and indicate a new error "CRL path validation
219 error" in this case. Applications wanting additional details can use
220 the verify callback and check the new "parent" field. If this is not
221 NULL CRL path validation is taking place. Existing applications wont
222 see this because it requires extended CRL support which is off by
225 This work was sponsored by Google.
228 *) Support for freshest CRL extension.
230 This work was sponsored by Google.
233 *) Initial indirect CRL support. Currently only supported in the CRLs
234 passed directly and not via lookup. Process certificate issuer
235 CRL entry extension and lookup CRL entries by bother issuer name
236 and serial number. Check and process CRL issuer entry in IDP extension.
238 This work was sponsored by Google.
241 *) Add support for distinct certificate and CRL paths. The CRL issuer
242 certificate is validated separately in this case. Only enabled if
243 an extended CRL support flag is set: this flag will enable additional
244 CRL functionality in future.
246 This work was sponsored by Google.
249 *) Add support for policy mappings extension.
251 This work was sponsored by Google.
254 *) Fixes to pathlength constraint, self issued certificate handling,
255 policy processing to align with RFC3280 and PKITS tests.
257 This work was sponsored by Google.
260 *) Support for name constraints certificate extension. DN, email, DNS
261 and URI types are currently supported.
263 This work was sponsored by Google.
266 *) To cater for systems that provide a pointer-based thread ID rather
267 than numeric, deprecate the current numeric thread ID mechanism and
268 replace it with a structure and associated callback type. This
269 mechanism allows a numeric "hash" to be extracted from a thread ID in
270 either case, and on platforms where pointers are larger than 'long',
271 mixing is done to help ensure the numeric 'hash' is usable even if it
272 can't be guaranteed unique. The default mechanism is to use "&errno"
273 as a pointer-based thread ID to distinguish between threads.
275 Applications that want to provide their own thread IDs should now use
276 CRYPTO_THREADID_set_callback() to register a callback that will call
277 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
279 Note that ERR_remove_state() is now deprecated, because it is tied
280 to the assumption that thread IDs are numeric. ERR_remove_state(0)
281 to free the current thread's error state should be replaced by
282 ERR_remove_thread_state(NULL).
284 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
285 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
286 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
287 application was previously providing a numeric thread callback that
288 was inappropriate for distinguishing threads, then uniqueness might
289 have been obtained with &errno that happened immediately in the
290 intermediate development versions of OpenSSL; this is no longer the
291 case, the numeric thread callback will now override the automatic use
293 [Geoff Thorpe, with help from Bodo Moeller]
295 *) Initial support for different CRL issuing certificates. This covers a
296 simple case where the self issued certificates in the chain exist and
297 the real CRL issuer is higher in the existing chain.
299 This work was sponsored by Google.
302 *) Removed effectively defunct crypto/store from the build.
305 *) Revamp of STACK to provide stronger type-checking. Still to come:
306 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
307 ASN1_STRING, CONF_VALUE.
310 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
311 RAM on SSL connections. This option can save about 34k per idle SSL.
314 *) Revamp of LHASH to provide stronger type-checking. Still to come:
315 STACK, TXT_DB, bsearch, qsort.
318 *) Initial support for Cryptographic Message Syntax (aka CMS) based
319 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
320 support for data, signedData, compressedData, digestedData and
321 encryptedData, envelopedData types included. Scripts to check against
322 RFC4134 examples draft and interop and consistency checks of many
323 content types and variants.
326 *) Add options to enc utility to support use of zlib compression BIO.
329 *) Extend mk1mf to support importing of options and assembly language
330 files from Configure script, currently only included in VC-WIN32.
331 The assembly language rules can now optionally generate the source
332 files from the associated perl scripts.
335 *) Implement remaining functionality needed to support GOST ciphersuites.
336 Interop testing has been performed using CryptoPro implementations.
337 [Victor B. Wagner <vitus@cryptocom.ru>]
339 *) s390x assembler pack.
342 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
346 *) Implement Opaque PRF Input TLS extension as specified in
347 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
348 official specification yet and no extension type assignment by
349 IANA exists, this extension (for now) will have to be explicitly
350 enabled when building OpenSSL by providing the extension number
351 to use. For example, specify an option
353 -DTLSEXT_TYPE_opaque_prf_input=0x9527
355 to the "config" or "Configure" script to enable the extension,
356 assuming extension number 0x9527 (which is a completely arbitrary
357 and unofficial assignment based on the MD5 hash of the Internet
358 Draft). Note that by doing so, you potentially lose
359 interoperability with other TLS implementations since these might
360 be using the same extension number for other purposes.
362 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
363 opaque PRF input value to use in the handshake. This will create
364 an interal copy of the length-'len' string at 'src', and will
365 return non-zero for success.
367 To get more control and flexibility, provide a callback function
370 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
371 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
375 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
378 Callback function 'cb' will be called in handshakes, and is
379 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
380 Argument 'arg' is for application purposes (the value as given to
381 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
382 be provided to the callback function). The callback function
383 has to return non-zero to report success: usually 1 to use opaque
384 PRF input just if possible, or 2 to enforce use of the opaque PRF
385 input. In the latter case, the library will abort the handshake
386 if opaque PRF input is not successfully negotiated.
388 Arguments 'peerinput' and 'len' given to the callback function
389 will always be NULL and 0 in the case of a client. A server will
390 see the client's opaque PRF input through these variables if
391 available (NULL and 0 otherwise). Note that if the server
392 provides an opaque PRF input, the length must be the same as the
393 length of the client's opaque PRF input.
395 Note that the callback function will only be called when creating
396 a new session (session resumption can resume whatever was
397 previously negotiated), and will not be called in SSL 2.0
398 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
399 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
400 for applications that need to enforce opaque PRF input.
404 *) Update ssl code to support digests other than SHA1+MD5 for handshake
407 [Victor B. Wagner <vitus@cryptocom.ru>]
409 *) Add RFC4507 support to OpenSSL. This includes the corrections in
410 RFC4507bis. The encrypted ticket format is an encrypted encoded
411 SSL_SESSION structure, that way new session features are automatically
414 If a client application caches session in an SSL_SESSION structure
415 support is transparent because tickets are now stored in the encoded
418 The SSL_CTX structure automatically generates keys for ticket
419 protection in servers so again support should be possible
420 with no application modification.
422 If a client or server wishes to disable RFC4507 support then the option
423 SSL_OP_NO_TICKET can be set.
425 Add a TLS extension debugging callback to allow the contents of any client
426 or server extensions to be examined.
428 This work was sponsored by Google.
431 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
432 OpenSSL should now compile cleanly on gcc 4.2
433 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
435 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
436 support including streaming MAC support: this is required for GOST
438 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
440 *) Add option -stream to use PKCS#7 streaming in smime utility. New
441 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
442 to output in BER and PEM format.
445 *) Experimental support for use of HMAC via EVP_PKEY interface. This
446 allows HMAC to be handled via the EVP_DigestSign*() interface. The
447 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
448 ENGINE support for HMAC keys which are unextractable. New -mac and
449 -macopt options to dgst utility.
452 *) New option -sigopt to dgst utility. Update dgst to use
453 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
454 alternative signing paramaters such as X9.31 or PSS in the dgst
458 *) Change ssl_cipher_apply_rule(), the internal function that does
459 the work each time a ciphersuite string requests enabling
460 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
461 removing ("!foo+bar") a class of ciphersuites: Now it maintains
462 the order of disabled ciphersuites such that those ciphersuites
463 that most recently went from enabled to disabled not only stay
464 in order with respect to each other, but also have higher priority
465 than other disabled ciphersuites the next time ciphersuites are
468 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
469 the same ciphersuites as with "HIGH" alone, but in a specific
470 order where the PSK ciphersuites come first (since they are the
471 most recently disabled ciphersuites when "HIGH" is parsed).
473 Also, change ssl_create_cipher_list() (using this new
474 funcionality) such that between otherwise identical
475 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
479 *) Change ssl_create_cipher_list() so that it automatically
480 arranges the ciphersuites in reasonable order before starting
481 to process the rule string. Thus, the definition for "DEFAULT"
482 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
483 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
484 This makes it much easier to arrive at a reasonable default order
485 in applications for which anonymous ciphers are OK (meaning
486 that you can't actually use DEFAULT).
487 [Bodo Moeller; suggested by Victor Duchovni]
489 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
490 processing) into multiple integers instead of setting
491 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
492 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
493 (These masks as well as the individual bit definitions are hidden
494 away into the non-exported interface ssl/ssl_locl.h, so this
495 change to the definition of the SSL_CIPHER structure shouldn't
496 affect applications.) This give us more bits for each of these
497 categories, so there is no longer a need to coagulate AES128 and
498 AES256 into a single algorithm bit, and to coagulate Camellia128
499 and Camellia256 into a single algorithm bit, which has led to all
502 Thus, among other things, the kludge introduced in 0.9.7m and
503 0.9.8e for masking out AES256 independently of AES128 or masking
504 out Camellia256 independently of AES256 is not needed here in 0.9.9.
506 With the change, we also introduce new ciphersuite aliases that
507 so far were missing: "AES128", "AES256", "CAMELLIA128", and
511 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
512 Use the leftmost N bytes of the signature input if the input is
513 larger than the prime q (with N being the size in bytes of q).
516 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
517 it yet and it is largely untested.
520 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
523 *) Initial incomplete changes to avoid need for function casts in OpenSSL
524 some compilers (gcc 4.2 and later) reject their use. Safestack is
525 reimplemented. Update ASN1 to avoid use of legacy functions.
528 *) Win32/64 targets are linked with Winsock2.
531 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
532 to external functions. This can be used to increase CRL handling
533 efficiency especially when CRLs are very large by (for example) storing
534 the CRL revoked certificates in a database.
537 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
538 new CRLs added to a directory can be used. New command line option
539 -verify_return_error to s_client and s_server. This causes real errors
540 to be returned by the verify callback instead of carrying on no matter
541 what. This reflects the way a "real world" verify callback would behave.
544 *) GOST engine, supporting several GOST algorithms and public key formats.
545 Kindly donated by Cryptocom.
548 *) Partial support for Issuing Distribution Point CRL extension. CRLs
549 partitioned by DP are handled but no indirect CRL or reason partitioning
550 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
551 selected via a scoring technique which handles IDP and AKID in CRLs.
554 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
555 will ultimately be used for all verify operations: this will remove the
556 X509_STORE dependency on certificate verification and allow alternative
557 lookup methods. X509_STORE based implementations of these two callbacks.
560 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
561 Modify get_crl() to find a valid (unexpired) CRL if possible.
564 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
565 this would be called X509_CRL_cmp() but that name is already used by
566 a function that just compares CRL issuer names. Cache several CRL
567 extensions in X509_CRL structure and cache CRLDP in X509.
570 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
571 this maps equivalent X509_NAME structures into a consistent structure.
572 Name comparison can then be performed rapidly using memcmp().
575 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
579 *) Allow digests to supply their own micalg string for S/MIME type using
580 the ctrl EVP_MD_CTRL_MICALG.
583 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
584 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
585 ctrl. It can then customise the structure before and/or after signing
589 *) New function OBJ_add_sigid() to allow application defined signature OIDs
590 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
591 to free up any added signature OIDs.
594 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
595 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
596 digest and cipher tables. New options added to openssl utility:
597 list-message-digest-algorithms and list-cipher-algorithms.
600 *) Change the array representation of binary polynomials: the list
601 of degrees of non-zero coefficients is now terminated with -1.
602 Previously it was terminated with 0, which was also part of the
603 value; thus, the array representation was not applicable to
604 polynomials where t^0 has coefficient zero. This change makes
605 the array representation useful in a more general context.
608 *) Various modifications and fixes to SSL/TLS cipher string
609 handling. For ECC, the code now distinguishes between fixed ECDH
610 with RSA certificates on the one hand and with ECDSA certificates
611 on the other hand, since these are separate ciphersuites. The
612 unused code for Fortezza ciphersuites has been removed.
614 For consistency with EDH, ephemeral ECDH is now called "EECDH"
615 (not "ECDHE"). For consistency with the code for DH
616 certificates, use of ECDH certificates is now considered ECDH
617 authentication, not RSA or ECDSA authentication (the latter is
618 merely the CA's signing algorithm and not actively used in the
621 The temporary ciphersuite alias "ECCdraft" is no longer
622 available, and ECC ciphersuites are no longer excluded from "ALL"
623 and "DEFAULT". The following aliases now exist for RFC 4492
624 ciphersuites, most of these by analogy with the DH case:
626 kECDHr - ECDH cert, signed with RSA
627 kECDHe - ECDH cert, signed with ECDSA
628 kECDH - ECDH cert (signed with either RSA or ECDSA)
629 kEECDH - ephemeral ECDH
630 ECDH - ECDH cert or ephemeral ECDH
636 AECDH - anonymous ECDH
637 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
641 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
642 Use correct micalg parameters depending on digest(s) in signed message.
645 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
646 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
649 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
650 an engine to register a method. Add ENGINE lookups for methods and
651 functional reference processing.
654 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
655 EVP_{Sign,Verify}* which allow an application to customise the signature
659 *) New -resign option to smime utility. This adds one or more signers
660 to an existing PKCS#7 signedData structure. Also -md option to use an
661 alternative message digest algorithm for signing.
664 *) Tidy up PKCS#7 routines and add new functions to make it easier to
665 create PKCS7 structures containing multiple signers. Update smime
666 application to support multiple signers.
669 *) New -macalg option to pkcs12 utility to allow setting of an alternative
673 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
674 Reorganize PBE internals to lookup from a static table using NIDs,
675 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
676 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
677 PRF which will be automatically used with PBES2.
680 *) Replace the algorithm specific calls to generate keys in "req" with the
684 *) Update PKCS#7 enveloped data routines to use new API. This is now
685 supported by any public key method supporting the encrypt operation. A
686 ctrl is added to allow the public key algorithm to examine or modify
687 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
691 *) Add a ctrl to asn1 method to allow a public key algorithm to express
692 a default digest type to use. In most cases this will be SHA1 but some
693 algorithms (such as GOST) need to specify an alternative digest. The
694 return value indicates how strong the prefernce is 1 means optional and
695 2 is mandatory (that is it is the only supported type). Modify
696 ASN1_item_sign() to accept a NULL digest argument to indicate it should
697 use the default md. Update openssl utilities to use the default digest
698 type for signing if it is not explicitly indicated.
701 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
702 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
703 signing method from the key type. This effectively removes the link
704 between digests and public key types.
707 *) Add an OID cross reference table and utility functions. Its purpose is to
708 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
709 rsaEncryption. This will allow some of the algorithm specific hackery
710 needed to use the correct OID to be removed.
713 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
714 structures for PKCS7_sign(). They are now set up by the relevant public
718 *) Add provisional EC pkey method with support for ECDSA and ECDH.
721 *) Add support for key derivation (agreement) in the API, DH method and
725 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
726 public and private key formats. As a side effect these add additional
727 command line functionality not previously available: DSA signatures can be
728 generated and verified using pkeyutl and DH key support and generation in
733 [Oliver Tappe <zooey@hirschkaefer.de>]
735 *) New make target "install_html_docs" installs HTML renditions of the
737 [Oliver Tappe <zooey@hirschkaefer.de>]
739 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
740 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
741 support key and parameter generation and add initial key generation
742 functionality for RSA.
745 *) Add functions for main EVP_PKEY_method operations. The undocumented
746 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
747 EVP_PKEY_{encrypt,decrypt}_old.
750 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
751 key API, doesn't do much yet.
754 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
755 public key algorithms. New option to openssl utility:
756 "list-public-key-algorithms" to print out info.
759 *) Implement the Supported Elliptic Curves Extension for
760 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
763 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
764 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
767 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
768 utilities such as rsa, dsa, dsaparam etc except they process any key
772 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
773 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
774 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
778 *) Initial support for pluggable public key ASN1.
779 De-spaghettify the public key ASN1 handling. Move public and private
780 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
781 algorithm specific handling to a single module within the relevant
782 algorithm directory. Add functions to allow (near) opaque processing
783 of public and private key structures.
786 *) Implement the Supported Point Formats Extension for
787 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
790 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
791 for the psk identity [hint] and the psk callback functions to the
792 SSL_SESSION, SSL and SSL_CTX structure.
795 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
799 SSL_CTX_use_psk_identity_hint
800 SSL_get_psk_identity_hint
802 SSL_use_psk_identity_hint
804 [Mika Kousa and Pasi Eronen of Nokia Corporation]
806 *) Add RFC 3161 compliant time stamp request creation, response generation
807 and response verification functionality.
808 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
810 *) Add initial support for TLS extensions, specifically for the server_name
811 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
812 have new members for a host name. The SSL data structure has an
813 additional member SSL_CTX *initial_ctx so that new sessions can be
814 stored in that context to allow for session resumption, even after the
815 SSL has been switched to a new SSL_CTX in reaction to a client's
816 server_name extension.
818 New functions (subject to change):
821 SSL_get_servername_type()
824 New CTRL codes and macros (subject to change):
826 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
827 - SSL_CTX_set_tlsext_servername_callback()
828 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
829 - SSL_CTX_set_tlsext_servername_arg()
830 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
832 openssl s_client has a new '-servername ...' option.
834 openssl s_server has new options '-servername_host ...', '-cert2 ...',
835 '-key2 ...', '-servername_fatal' (subject to change). This allows
836 testing the HostName extension for a specific single host name ('-cert'
837 and '-key' remain fallbacks for handshakes without HostName
838 negotiation). If the unrecogninzed_name alert has to be sent, this by
839 default is a warning; it becomes fatal with the '-servername_fatal'
842 [Peter Sylvester, Remy Allais, Christophe Renou]
844 *) Whirlpool hash implementation is added.
847 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
848 bn(64,32). Because of instruction set limitations it doesn't have
849 any negative impact on performance. This was done mostly in order
850 to make it possible to share assembler modules, such as bn_mul_mont
851 implementations, between 32- and 64-bit builds without hassle.
854 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
855 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
859 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
860 dedicated Montgomery multiplication procedure, is introduced.
861 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
862 "64-bit" performance on certain 32-bit targets.
865 *) New option SSL_OP_NO_COMP to disable use of compression selectively
866 in SSL structures. New SSL ctrl to set maximum send fragment size.
867 Save memory by seeting the I/O buffer sizes dynamically instead of
868 using the maximum available value.
871 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
872 in addition to the text details.
875 *) Very, very preliminary EXPERIMENTAL support for printing of general
876 ASN1 structures. This currently produces rather ugly output and doesn't
877 handle several customised structures at all.
880 *) Integrated support for PVK file format and some related formats such
881 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
882 these in the 'rsa' and 'dsa' utilities.
885 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
888 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
889 place for the (very old) "NETSCAPE" format certificates which are now
890 handled using new ASN1 code equivalents.
893 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
894 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
895 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
898 *) Modify CRL distribution points extension code to print out previously
899 unsupported fields. Enhance extension setting code to allow setting of
903 *) Add print and set support for Issuing Distribution Point CRL extension.
906 *) Change 'Configure' script to enable Camellia by default.
909 Changes between 0.9.8l and 0.9.8m [xx XXX xxxx]
911 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
912 accommodate for stack sorting, always a write lock!).
915 *) On some versions of WIN32 Heap32Next is very slow. This can cause
916 excessive delays in the RAND_poll(): over a minute. As a workaround
917 include a time check in the inner Heap32Next loop too.
920 *) The code that handled flushing of data in SSL/TLS originally used the
921 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
922 the problem outlined in PR#1949. The fix suggested there however can
923 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
924 of Apache). So instead simplify the code to flush unconditionally.
925 This should be fine since flushing with no data to flush is a no op.
928 *) Handle TLS versions 2.0 and later properly and correctly use the
929 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
930 off ancient servers have a habit of sticking around for a while...
933 *) Modify compression code so it frees up structures without using the
934 ex_data callbacks. This works around a problem where some applications
935 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
936 restarting) then use compression (e.g. SSL with compression) later.
937 This results in significant per-connection memory leaks and
938 has caused some security issues including CVE-2008-1678 and
942 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
943 connect and renegotiate with servers which do not support RI.
944 Until RI is more widely deployed this option is enabled by default.
947 *) Add "missing" ssl ctrls to clear options and mode.
950 *) If client attempts to renegotiate and doesn't support RI respond with
951 a no_renegotiation alert as required by RFC5746. Some renegotiating
952 TLS clients will continue a connection gracefully when they receive
953 the alert. Unfortunately OpenSSL mishandled this alert and would hang
954 waiting for a server hello which it will never receive. Now we treat a
955 received no_renegotiation alert as a fatal error. This is because
956 applications requesting a renegotiation might well expect it to succeed
957 and would have no code in place to handle the server denying it so the
958 only safe thing to do is to terminate the connection.
961 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
962 peer supports secure renegotiation and 0 otherwise. Print out peer
963 renegotiation support in s_client/s_server.
966 *) Replace the highly broken and deprecated SPKAC certification method with
967 the updated NID creation version. This should correctly handle UTF8.
970 *) Implement RFC5746. Re-enable renegotiation but require the extension
971 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
972 turns out to be a bad idea. It has been replaced by
973 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
974 SSL_CTX_set_options(). This is really not recommended unless you
975 know what you are doing.
976 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
978 *) Fixes to stateless session resumption handling. Use initial_ctx when
979 issuing and attempting to decrypt tickets in case it has changed during
980 servername handling. Use a non-zero length session ID when attempting
981 stateless session resumption: this makes it possible to determine if
982 a resumption has occurred immediately after receiving server hello
983 (several places in OpenSSL subtly assume this) instead of later in
987 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
988 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
989 fixes for a few places where the return code is not checked
991 [Julia Lawall <julia@diku.dk>]
993 *) Add --strict-warnings option to Configure script to include devteam
994 warnings in other configurations.
997 *) Add support for --libdir option and LIBDIR variable in makefiles. This
998 makes it possible to install openssl libraries in locations which
999 have names other than "lib", for example "/usr/lib64" which some
1001 [Steve Henson, based on patch from Jeremy Utley]
1003 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1004 X690 8.9.12 and can produce some misleading textual output of OIDs.
1005 [Steve Henson, reported by Dan Kaminsky]
1007 *) Delete MD2 from algorithm tables. This follows the recommendation in
1008 several standards that it is not used in new applications due to
1009 several cryptographic weaknesses. For binary compatibility reasons
1010 the MD2 API is still compiled in by default.
1013 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1017 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1018 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1020 [Guenter <lists@gknw.net>]
1022 *) Fix the server certificate chain building code to use X509_verify_cert(),
1023 it used to have an ad-hoc builder which was unable to cope with anything
1024 other than a simple chain.
1025 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1027 *) Don't check self signed certificate signatures in X509_verify_cert()
1028 by default (a flag can override this): it just wastes time without
1029 adding any security. As a useful side effect self signed root CAs
1030 with non-FIPS digests are now usable in FIPS mode.
1033 *) In dtls1_process_out_of_seq_message() the check if the current message
1034 is already buffered was missing. For every new message was memory
1035 allocated, allowing an attacker to perform an denial of service attack
1036 with sending out of seq handshake messages until there is no memory
1037 left. Additionally every future messege was buffered, even if the
1038 sequence number made no sense and would be part of another handshake.
1039 So only messages with sequence numbers less than 10 in advance will be
1040 buffered. (CVE-2009-1378)
1041 [Robin Seggelmann, discovered by Daniel Mentz]
1043 *) Records are buffered if they arrive with a future epoch to be
1044 processed after finishing the corresponding handshake. There is
1045 currently no limitation to this buffer allowing an attacker to perform
1046 a DOS attack with sending records with future epochs until there is no
1047 memory left. This patch adds the pqueue_size() function to detemine
1048 the size of a buffer and limits the record buffer to 100 entries.
1050 [Robin Seggelmann, discovered by Daniel Mentz]
1052 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1053 parent structure is freed. (CVE-2009-1379)
1056 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1057 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1060 [Ilya O. <vrghost@gmail.com>]
1062 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1064 *) Disable renegotiation completely - this fixes a severe security
1065 problem (CVE-2009-3555) at the cost of breaking all
1066 renegotiation. Renegotiation can be re-enabled by setting
1067 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1068 run-time. This is really not recommended unless you know what
1072 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1074 *) Don't set val to NULL when freeing up structures, it is freed up by
1075 underlying code. If sizeof(void *) > sizeof(long) this can result in
1076 zeroing past the valid field. (CVE-2009-0789)
1077 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1079 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1080 checked correctly. This would allow some invalid signed attributes to
1081 appear to verify correctly. (CVE-2009-0591)
1082 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1084 *) Reject UniversalString and BMPString types with invalid lengths. This
1085 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1086 a legal length. (CVE-2009-0590)
1089 *) Set S/MIME signing as the default purpose rather than setting it
1090 unconditionally. This allows applications to override it at the store
1094 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1095 to handle some structures.
1098 *) Improve efficiency of mem_gets: don't search whole buffer each time
1100 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1102 *) New -hex option for openssl rand.
1105 *) Print out UTF8String and NumericString when parsing ASN1.
1108 *) Support NumericString type for name components.
1111 *) Allow CC in the environment to override the automatically chosen
1112 compiler. Note that nothing is done to ensure flags work with the
1116 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1118 *) Properly check EVP_VerifyFinal() and similar return values
1120 [Ben Laurie, Bodo Moeller, Google Security Team]
1122 *) Enable TLS extensions by default.
1125 *) Allow the CHIL engine to be loaded, whether the application is
1126 multithreaded or not. (This does not release the developer from the
1127 obligation to set up the dynamic locking callbacks.)
1128 [Sander Temme <sander@temme.net>]
1130 *) Use correct exit code if there is an error in dgst command.
1131 [Steve Henson; problem pointed out by Roland Dirlewanger]
1133 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1134 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1137 *) Add experimental JPAKE support, including demo authentication in
1138 s_client and s_server.
1141 *) Set the comparison function in v3_addr_canonize().
1142 [Rob Austein <sra@hactrn.net>]
1144 *) Add support for XMPP STARTTLS in s_client.
1145 [Philip Paeps <philip@freebsd.org>]
1147 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1148 to ensure that even with this option, only ciphersuites in the
1149 server's preference list will be accepted. (Note that the option
1150 applies only when resuming a session, so the earlier behavior was
1151 just about the algorithm choice for symmetric cryptography.)
1154 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1156 *) Fix NULL pointer dereference if a DTLS server received
1157 ChangeCipherSpec as first record (CVE-2009-1386).
1160 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1161 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1164 *) The fix in 0.9.8c that supposedly got rid of unsafe
1165 double-checked locking was incomplete for RSA blinding,
1166 addressing just one layer of what turns out to have been
1167 doubly unsafe triple-checked locking.
1169 So now fix this for real by retiring the MONT_HELPER macro
1170 in crypto/rsa/rsa_eay.c.
1172 [Bodo Moeller; problem pointed out by Marius Schilder]
1174 *) Various precautionary measures:
1176 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1178 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1179 (NB: This would require knowledge of the secret session ticket key
1180 to exploit, in which case you'd be SOL either way.)
1182 - Change bn_nist.c so that it will properly handle input BIGNUMs
1183 outside the expected range.
1185 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1188 [Neel Mehta, Bodo Moeller]
1190 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1191 the load fails. Useful for distros.
1192 [Ben Laurie and the FreeBSD team]
1194 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1197 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1200 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1202 This work was sponsored by Logica.
1205 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1206 keystores. Support for SSL/TLS client authentication too.
1207 Not compiled unless enable-capieng specified to Configure.
1209 This work was sponsored by Logica.
1212 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1213 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1214 attribute creation routines such as certifcate requests and PKCS#12
1218 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1220 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1221 handshake which could lead to a cilent crash as found using the
1222 Codenomicon TLS test suite (CVE-2008-1672)
1223 [Steve Henson, Mark Cox]
1225 *) Fix double free in TLS server name extensions which could lead to
1226 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1229 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1231 Clear the error queue to ensure that error entries left from
1232 older function calls do not interfere with the correct operation.
1233 [Lutz Jaenicke, Erik de Castro Lopo]
1235 *) Remove root CA certificates of commercial CAs:
1237 The OpenSSL project does not recommend any specific CA and does not
1238 have any policy with respect to including or excluding any CA.
1239 Therefore it does not make any sense to ship an arbitrary selection
1240 of root CA certificates with the OpenSSL software.
1243 *) RSA OAEP patches to fix two separate invalid memory reads.
1244 The first one involves inputs when 'lzero' is greater than
1245 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1246 before the beginning of from). The second one involves inputs where
1247 the 'db' section contains nothing but zeroes (there is a one-byte
1248 invalid read after the end of 'db').
1249 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1251 *) Partial backport from 0.9.9-dev:
1253 Introduce bn_mul_mont (dedicated Montgomery multiplication
1254 procedure) as a candidate for BIGNUM assembler implementation.
1255 While 0.9.9-dev uses assembler for various architectures, only
1256 x86_64 is available by default here in the 0.9.8 branch, and
1257 32-bit x86 is available through a compile-time setting.
1259 To try the 32-bit x86 assembler implementation, use Configure
1260 option "enable-montasm" (which exists only for this backport).
1262 As "enable-montasm" for 32-bit x86 disclaims code stability
1263 anyway, in this constellation we activate additional code
1264 backported from 0.9.9-dev for further performance improvements,
1265 namely BN_from_montgomery_word. (To enable this otherwise,
1266 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1268 [Andy Polyakov (backport partially by Bodo Moeller)]
1270 *) Add TLS session ticket callback. This allows an application to set
1271 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1272 values. This is useful for key rollover for example where several key
1273 sets may exist with different names.
1276 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1277 This was broken until now in 0.9.8 releases, such that the only way
1278 a registered ENGINE could be used (assuming it initialises
1279 successfully on the host) was to explicitly set it as the default
1280 for the relevant algorithms. This is in contradiction with 0.9.7
1281 behaviour and the documentation. With this fix, when an ENGINE is
1282 registered into a given algorithm's table of implementations, the
1283 'uptodate' flag is reset so that auto-discovery will be used next
1284 time a new context for that algorithm attempts to select an
1286 [Ian Lister (tweaked by Geoff Thorpe)]
1288 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1289 implemention in the following ways:
1291 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1294 Lack of BER streaming support means one pass streaming processing is
1295 only supported if data is detached: setting the streaming flag is
1296 ignored for embedded content.
1298 CMS support is disabled by default and must be explicitly enabled
1299 with the enable-cms configuration option.
1302 *) Update the GMP engine glue to do direct copies between BIGNUM and
1303 mpz_t when openssl and GMP use the same limb size. Otherwise the
1304 existing "conversion via a text string export" trick is still used.
1305 [Paul Sheer <paulsheer@gmail.com>]
1307 *) Zlib compression BIO. This is a filter BIO which compressed and
1308 uncompresses any data passed through it.
1311 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1312 RFC3394 compatible AES key wrapping.
1315 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1316 sets string data without copying. X509_ALGOR_set0() and
1317 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1318 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1319 from an X509_ATTRIBUTE structure optionally checking it occurs only
1320 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1324 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1325 to get the expected BN_FLG_CONSTTIME behavior.
1326 [Bodo Moeller (Google)]
1330 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1331 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1332 - added some more tests to do_tests.pl
1333 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1334 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1335 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1336 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1337 - various changes to netware.pl to enable gcc-cross builds on Win32
1339 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1340 - various changes to fix missing prototype warnings
1341 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1342 - added AES, WHIRLPOOL and CPUID assembler code to build files
1343 - added missing AES assembler make rules to mk1mf.pl
1344 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1345 [Guenter Knauf <eflash@gmx.net>]
1347 *) Implement certificate status request TLS extension defined in RFC3546.
1348 A client can set the appropriate parameters and receive the encoded
1349 OCSP response via a callback. A server can query the supplied parameters
1350 and set the encoded OCSP response in the callback. Add simplified examples
1351 to s_client and s_server.
1354 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1356 *) Fix various bugs:
1357 + Binary incompatibility of ssl_ctx_st structure
1358 + DTLS interoperation with non-compliant servers
1359 + Don't call get_session_cb() without proposed session
1360 + Fix ia64 assembler code
1361 [Andy Polyakov, Steve Henson]
1363 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1365 *) DTLS Handshake overhaul. There were longstanding issues with
1366 OpenSSL DTLS implementation, which were making it impossible for
1367 RFC 4347 compliant client to communicate with OpenSSL server.
1368 Unfortunately just fixing these incompatibilities would "cut off"
1369 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1370 server keeps tolerating non RFC compliant syntax. The opposite is
1371 not true, 0.9.8f client can not communicate with earlier server.
1372 This update even addresses CVE-2007-4995.
1375 *) Changes to avoid need for function casts in OpenSSL: some compilers
1376 (gcc 4.2 and later) reject their use.
1377 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1380 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1381 RFC4507bis. The encrypted ticket format is an encrypted encoded
1382 SSL_SESSION structure, that way new session features are automatically
1385 If a client application caches session in an SSL_SESSION structure
1386 support is transparent because tickets are now stored in the encoded
1389 The SSL_CTX structure automatically generates keys for ticket
1390 protection in servers so again support should be possible
1391 with no application modification.
1393 If a client or server wishes to disable RFC4507 support then the option
1394 SSL_OP_NO_TICKET can be set.
1396 Add a TLS extension debugging callback to allow the contents of any client
1397 or server extensions to be examined.
1399 This work was sponsored by Google.
1402 *) Add initial support for TLS extensions, specifically for the server_name
1403 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1404 have new members for a host name. The SSL data structure has an
1405 additional member SSL_CTX *initial_ctx so that new sessions can be
1406 stored in that context to allow for session resumption, even after the
1407 SSL has been switched to a new SSL_CTX in reaction to a client's
1408 server_name extension.
1410 New functions (subject to change):
1412 SSL_get_servername()
1413 SSL_get_servername_type()
1416 New CTRL codes and macros (subject to change):
1418 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1419 - SSL_CTX_set_tlsext_servername_callback()
1420 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1421 - SSL_CTX_set_tlsext_servername_arg()
1422 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1424 openssl s_client has a new '-servername ...' option.
1426 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1427 '-key2 ...', '-servername_fatal' (subject to change). This allows
1428 testing the HostName extension for a specific single host name ('-cert'
1429 and '-key' remain fallbacks for handshakes without HostName
1430 negotiation). If the unrecogninzed_name alert has to be sent, this by
1431 default is a warning; it becomes fatal with the '-servername_fatal'
1434 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1436 *) Add AES and SSE2 assembly language support to VC++ build.
1439 *) Mitigate attack on final subtraction in Montgomery reduction.
1442 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1443 (which previously caused an internal error).
1446 *) Squeeze another 10% out of IGE mode when in != out.
1449 *) AES IGE mode speedup.
1450 [Dean Gaudet (Google)]
1452 *) Add the Korean symmetric 128-bit cipher SEED (see
1453 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1454 add SEED ciphersuites from RFC 4162:
1456 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1457 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1458 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1459 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1461 To minimize changes between patchlevels in the OpenSSL 0.9.8
1462 series, SEED remains excluded from compilation unless OpenSSL
1463 is configured with 'enable-seed'.
1464 [KISA, Bodo Moeller]
1466 *) Mitigate branch prediction attacks, which can be practical if a
1467 single processor is shared, allowing a spy process to extract
1468 information. For detailed background information, see
1469 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1470 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1471 and Necessary Software Countermeasures"). The core of the change
1472 are new versions BN_div_no_branch() and
1473 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1474 respectively, which are slower, but avoid the security-relevant
1475 conditional branches. These are automatically called by BN_div()
1476 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1477 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1478 remove a conditional branch.
1480 BN_FLG_CONSTTIME is the new name for the previous
1481 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1482 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1483 in the exponent causes BN_mod_exp_mont() to use the alternative
1484 implementation in BN_mod_exp_mont_consttime().) The old name
1485 remains as a deprecated alias.
1487 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1488 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1489 constant-time implementations for more than just exponentiation.
1490 Here too the old name is kept as a deprecated alias.
1492 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1493 the BN_BLINDING structure gets an independent copy of the
1494 modulus. This means that the previous "BIGNUM *m" argument to
1495 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1496 essentially becomes "const BIGNUM *m", although we can't actually
1497 change this in the header file before 0.9.9. It allows
1498 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1499 enable BN_FLG_CONSTTIME.
1501 [Matthew D Wood (Intel Corp)]
1503 *) In the SSL/TLS server implementation, be strict about session ID
1504 context matching (which matters if an application uses a single
1505 external cache for different purposes). Previously,
1506 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1507 set. This did ensure strict client verification, but meant that,
1508 with applications using a single external cache for quite
1509 different requirements, clients could circumvent ciphersuite
1510 restrictions for a given session ID context by starting a session
1511 in a different context.
1514 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1515 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1516 authentication-only ciphersuites.
1519 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1520 not complete and could lead to a possible single byte overflow
1521 (CVE-2007-5135) [Ben Laurie]
1523 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1525 *) Since AES128 and AES256 (and similarly Camellia128 and
1526 Camellia256) share a single mask bit in the logic of
1527 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1528 kludge to work properly if AES128 is available and AES256 isn't
1529 (or if Camellia128 is available and Camellia256 isn't).
1532 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1533 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1534 When a point or a seed is encoded in a BIT STRING, we need to
1535 prevent the removal of trailing zero bits to get the proper DER
1536 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1537 of a NamedBitList, for which trailing 0 bits need to be removed.)
1540 *) Have SSL/TLS server implementation tolerate "mismatched" record
1541 protocol version while receiving ClientHello even if the
1542 ClientHello is fragmented. (The server can't insist on the
1543 particular protocol version it has chosen before the ServerHello
1544 message has informed the client about his choice.)
1547 *) Add RFC 3779 support.
1548 [Rob Austein for ARIN, Ben Laurie]
1550 *) Load error codes if they are not already present instead of using a
1551 static variable. This allows them to be cleanly unloaded and reloaded.
1552 Improve header file function name parsing.
1555 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1556 or CAPABILITY handshake as required by RFCs.
1559 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1561 *) Introduce limits to prevent malicious keys being able to
1562 cause a denial of service. (CVE-2006-2940)
1563 [Steve Henson, Bodo Moeller]
1565 *) Fix ASN.1 parsing of certain invalid structures that can result
1566 in a denial of service. (CVE-2006-2937) [Steve Henson]
1568 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1569 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1571 *) Fix SSL client code which could crash if connecting to a
1572 malicious SSLv2 server. (CVE-2006-4343)
1573 [Tavis Ormandy and Will Drewry, Google Security Team]
1575 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1576 match only those. Before that, "AES256-SHA" would be interpreted
1577 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1578 the same strength classification in 0.9.7h) as we currently only
1579 have a single AES bit in the ciphersuite description bitmap.
1580 That change, however, also applied to ciphersuite strings such as
1581 "RC4-MD5" that intentionally matched multiple ciphersuites --
1582 namely, SSL 2.0 ciphersuites in addition to the more common ones
1583 from SSL 3.0/TLS 1.0.
1585 So we change the selection algorithm again: Naming an explicit
1586 ciphersuite selects this one ciphersuite, and any other similar
1587 ciphersuite (same bitmap) from *other* protocol versions.
1588 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1589 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1591 Since SSL 2.0 does not have any ciphersuites for which the
1592 128/256 bit distinction would be relevant, this works for now.
1593 The proper fix will be to use different bits for AES128 and
1594 AES256, which would have avoided the problems from the beginning;
1595 however, bits are scarce, so we can only do this in a new release
1596 (not just a patchlevel) when we can change the SSL_CIPHER
1597 definition to split the single 'unsigned long mask' bitmap into
1598 multiple values to extend the available space.
1602 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1604 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1605 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1607 *) Add AES IGE and biIGE modes.
1610 *) Change the Unix randomness entropy gathering to use poll() when
1611 possible instead of select(), since the latter has some
1612 undesirable limitations.
1613 [Darryl Miles via Richard Levitte and Bodo Moeller]
1615 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1616 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1617 cannot be implicitly activated as part of, e.g., the "AES" alias.
1618 However, please upgrade to OpenSSL 0.9.9[-dev] for
1619 non-experimental use of the ECC ciphersuites to get TLS extension
1620 support, which is required for curve and point format negotiation
1621 to avoid potential handshake problems.
1624 *) Disable rogue ciphersuites:
1626 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1627 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1628 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1630 The latter two were purportedly from
1631 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1634 Also deactivate the remaining ciphersuites from
1635 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1636 unofficial, and the ID has long expired.
1639 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1640 dual-core machines) and other potential thread-safety issues.
1643 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1644 versions), which is now available for royalty-free use
1645 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1646 Also, add Camellia TLS ciphersuites from RFC 4132.
1648 To minimize changes between patchlevels in the OpenSSL 0.9.8
1649 series, Camellia remains excluded from compilation unless OpenSSL
1650 is configured with 'enable-camellia'.
1653 *) Disable the padding bug check when compression is in use. The padding
1654 bug check assumes the first packet is of even length, this is not
1655 necessarily true if compresssion is enabled and can result in false
1656 positives causing handshake failure. The actual bug test is ancient
1657 code so it is hoped that implementations will either have fixed it by
1658 now or any which still have the bug do not support compression.
1661 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1663 *) When applying a cipher rule check to see if string match is an explicit
1664 cipher suite and only match that one cipher suite if it is.
1667 *) Link in manifests for VC++ if needed.
1668 [Austin Ziegler <halostatue@gmail.com>]
1670 *) Update support for ECC-based TLS ciphersuites according to
1671 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1672 TLS extensions, which are supported starting with the 0.9.9
1673 branch, not in the OpenSSL 0.9.8 branch).
1676 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1677 opaque EVP_CIPHER_CTX handling.
1680 *) Fixes and enhancements to zlib compression code. We now only use
1681 "zlib1.dll" and use the default __cdecl calling convention on Win32
1682 to conform with the standards mentioned here:
1683 http://www.zlib.net/DLL_FAQ.txt
1684 Static zlib linking now works on Windows and the new --with-zlib-include
1685 --with-zlib-lib options to Configure can be used to supply the location
1686 of the headers and library. Gracefully handle case where zlib library
1690 *) Several fixes and enhancements to the OID generation code. The old code
1691 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1692 handle numbers larger than ULONG_MAX, truncated printing and had a
1693 non standard OBJ_obj2txt() behaviour.
1696 *) Add support for building of engines under engine/ as shared libraries
1697 under VC++ build system.
1700 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1701 Hopefully, we will not see any false combination of paths any more.
1704 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1706 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1707 (part of SSL_OP_ALL). This option used to disable the
1708 countermeasure against man-in-the-middle protocol-version
1709 rollback in the SSL 2.0 server implementation, which is a bad
1710 idea. (CVE-2005-2969)
1712 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1713 for Information Security, National Institute of Advanced Industrial
1714 Science and Technology [AIST], Japan)]
1716 *) Add two function to clear and return the verify parameter flags.
1719 *) Keep cipherlists sorted in the source instead of sorting them at
1720 runtime, thus removing the need for a lock.
1723 *) Avoid some small subgroup attacks in Diffie-Hellman.
1724 [Nick Mathewson and Ben Laurie]
1726 *) Add functions for well-known primes.
1729 *) Extended Windows CE support.
1730 [Satoshi Nakamura and Andy Polyakov]
1732 *) Initialize SSL_METHOD structures at compile time instead of during
1733 runtime, thus removing the need for a lock.
1736 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1737 attempting to decrypt each encrypted key in turn. Add support to
1741 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1743 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1746 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1749 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1750 key into the same file any more.
1753 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1756 *) Add -utf8 command line and config file option to 'ca'.
1757 [Stefan <stf@udoma.org]
1759 *) Removed the macro des_crypt(), as it seems to conflict with some
1760 libraries. Use DES_crypt().
1763 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1764 involves renaming the source and generated shared-libs for
1765 both. The engines will accept the corrected or legacy ids
1766 ('ncipher' and '4758_cca' respectively) when binding. NB,
1767 this only applies when building 'shared'.
1768 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1770 *) Add attribute functions to EVP_PKEY structure. Modify
1771 PKCS12_create() to recognize a CSP name attribute and
1772 use it. Make -CSP option work again in pkcs12 utility.
1775 *) Add new functionality to the bn blinding code:
1776 - automatic re-creation of the BN_BLINDING parameters after
1777 a fixed number of uses (currently 32)
1778 - add new function for parameter creation
1779 - introduce flags to control the update behaviour of the
1780 BN_BLINDING parameters
1781 - hide BN_BLINDING structure
1782 Add a second BN_BLINDING slot to the RSA structure to improve
1783 performance when a single RSA object is shared among several
1787 *) Add support for DTLS.
1788 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1790 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1791 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1794 *) Remove buggy and incompletet DH cert support from
1795 ssl/ssl_rsa.c and ssl/s3_both.c
1798 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1799 the apps/openssl applications.
1802 *) Compile clean with "-Wall -Wmissing-prototypes
1803 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1804 DEBUG_SAFESTACK must also be set.
1807 *) Change ./Configure so that certain algorithms can be disabled by default.
1808 The new counterpiece to "no-xxx" is "enable-xxx".
1810 The patented RC5 and MDC2 algorithms will now be disabled unless
1811 "enable-rc5" and "enable-mdc2", respectively, are specified.
1813 (IDEA remains enabled despite being patented. This is because IDEA
1814 is frequently required for interoperability, and there is no license
1815 fee for non-commercial use. As before, "no-idea" can be used to
1816 avoid this algorithm.)
1820 *) Add processing of proxy certificates (see RFC 3820). This work was
1821 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1822 EGEE (Enabling Grids for E-science in Europe).
1825 *) RC4 performance overhaul on modern architectures/implementations, such
1826 as Intel P4, IA-64 and AMD64.
1829 *) New utility extract-section.pl. This can be used specify an alternative
1830 section number in a pod file instead of having to treat each file as
1831 a separate case in Makefile. This can be done by adding two lines to the
1834 =for comment openssl_section:XXX
1836 The blank line is mandatory.
1840 *) New arguments -certform, -keyform and -pass for s_client and s_server
1841 to allow alternative format key and certificate files and passphrase
1845 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1846 update associated structures and add various utility functions.
1848 Add new policy related verify parameters, include policy checking in
1849 standard verify code. Enhance 'smime' application with extra parameters
1850 to support policy checking and print out.
1853 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1854 Nehemiah processors. These extensions support AES encryption in hardware
1855 as well as RNG (though RNG support is currently disabled).
1856 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1858 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1861 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1862 [Andy Polyakov and a number of other people]
1864 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1865 implementation contributed by IBM.
1866 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1868 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1869 exponent rather than 'unsigned long'. There is a corresponding change to
1870 the new 'rsa_keygen' element of the RSA_METHOD structure.
1871 [Jelte Jansen, Geoff Thorpe]
1873 *) Functionality for creating the initial serial number file is now
1874 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1876 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1877 number file to 1, which is bound to cause problems. To avoid
1878 the problems while respecting compatibility between different 0.9.7
1879 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1880 CA.pl for serial number initialization. With the new release 0.9.8,
1881 we can fix the problem directly in the 'ca' utility.)
1884 *) Reduced header interdepencies by declaring more opaque objects in
1885 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1886 give fewer recursive includes, which could break lazy source code - so
1887 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1888 developers should define this symbol when building and using openssl to
1889 ensure they track the recommended behaviour, interfaces, [etc], but
1890 backwards-compatible behaviour prevails when this isn't defined.
1893 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1896 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1897 This will generate a random key of the appropriate length based on the
1898 cipher context. The EVP_CIPHER can provide its own random key generation
1899 routine to support keys of a specific form. This is used in the des and
1900 3des routines to generate a key of the correct parity. Update S/MIME
1901 code to use new functions and hence generate correct parity DES keys.
1902 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1903 valid (weak or incorrect parity).
1906 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1907 as looking them up. This is useful when the verified structure may contain
1908 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1909 present unless the new PKCS7_NO_CRL flag is asserted.
1912 *) Extend ASN1 oid configuration module. It now additionally accepts the
1915 shortName = some long name, 1.2.3.4
1918 *) Reimplemented the BN_CTX implementation. There is now no more static
1919 limitation on the number of variables it can handle nor the depth of the
1920 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1921 information can now expand as required, and rather than having a single
1922 static array of bignums, BN_CTX now uses a linked-list of such arrays
1923 allowing it to expand on demand whilst maintaining the usefulness of
1924 BN_CTX's "bundling".
1927 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1928 to allow all RSA operations to function using a single BN_CTX.
1931 *) Preliminary support for certificate policy evaluation and checking. This
1932 is initially intended to pass the tests outlined in "Conformance Testing
1933 of Relying Party Client Certificate Path Processing Logic" v1.07.
1936 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1937 remained unused and not that useful. A variety of other little bignum
1938 tweaks and fixes have also been made continuing on from the audit (see
1942 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1943 associated ASN1, EVP and SSL functions and old ASN1 macros.
1946 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1947 and this should never fail. So the return value from the use of
1948 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1949 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1952 *) BN_CTX_get() should return zero-valued bignums, providing the same
1953 initialised value as BN_new().
1954 [Geoff Thorpe, suggested by Ulf Möller]
1956 *) Support for inhibitAnyPolicy certificate extension.
1959 *) An audit of the BIGNUM code is underway, for which debugging code is
1960 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1961 is considered valid when processing BIGNUMs, and causes execution to
1962 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1963 further steps are taken to deliberately pollute unused data in BIGNUM
1964 structures to try and expose faulty code further on. For now, openssl will
1965 (in its default mode of operation) continue to tolerate the inconsistent
1966 forms that it has tolerated in the past, but authors and packagers should
1967 consider trying openssl and their own applications when compiled with
1968 these debugging symbols defined. It will help highlight potential bugs in
1969 their own code, and will improve the test coverage for OpenSSL itself. At
1970 some point, these tighter rules will become openssl's default to improve
1971 maintainability, though the assert()s and other overheads will remain only
1972 in debugging configurations. See bn.h for more details.
1973 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1975 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1976 that can only be obtained through BN_CTX_new() (which implicitly
1977 initialises it). The presence of this function only made it possible
1978 to overwrite an existing structure (and cause memory leaks).
1981 *) Because of the callback-based approach for implementing LHASH as a
1982 template type, lh_insert() adds opaque objects to hash-tables and
1983 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1984 to clean up those corresponding objects before destroying the hash table
1985 (and losing the object pointers). So some over-zealous constifications in
1986 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1987 objects as "const" and the lh_doall[_arg] callback wrappers are not
1988 prototyped to have "const" restrictions on the object pointers they are
1989 given (and so aren't required to cast them away any more).
1992 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1993 (speed) prefers to use its own implementation. The two implementations
1994 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1995 its object type properly exposed (MS_TM) instead of casting to/from "char
1996 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1997 aren't necessarily the greatest nomenclatures - but this is what was used
1998 internally to the implementation so I've used that for now.
2001 *) Ensure that deprecated functions do not get compiled when
2002 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2003 the self-tests were still using deprecated key-generation functions so
2004 these have been updated also.
2007 *) Reorganise PKCS#7 code to separate the digest location functionality
2008 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2009 New function PKCS7_set_digest() to set the digest type for PKCS#7
2010 digestedData type. Add additional code to correctly generate the
2011 digestedData type and add support for this type in PKCS7 initialization
2015 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2016 structure of type "other".
2019 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2020 sure the loop does correctly stop and breaking ("division by zero")
2021 modulus operations are not performed. The (pre-generated) prime
2022 table crypto/bn/bn_prime.h was already correct, but it could not be
2023 re-generated on some platforms because of the "division by zero"
2024 situation in the script.
2025 [Ralf S. Engelschall]
2027 *) Update support for ECC-based TLS ciphersuites according to
2028 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2029 SHA-1 now is only used for "small" curves (where the
2030 representation of a field element takes up to 24 bytes); for
2031 larger curves, the field element resulting from ECDH is directly
2032 used as premaster secret.
2033 [Douglas Stebila (Sun Microsystems Laboratories)]
2035 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2036 curve secp160r1 to the tests.
2037 [Douglas Stebila (Sun Microsystems Laboratories)]
2039 *) Add the possibility to load symbols globally with DSO.
2040 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2042 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2043 control of the error stack.
2046 *) Add support for STORE in ENGINE.
2049 *) Add the STORE type. The intention is to provide a common interface
2050 to certificate and key stores, be they simple file-based stores, or
2051 HSM-type store, or LDAP stores, or...
2052 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2055 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2056 pass a list of arguments to any function as well as provide a way
2057 for a function to pass data back to the caller.
2060 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2061 works like BUF_strdup() but can be used to duplicate a portion of
2062 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2066 *) Add the function sk_find_ex() which works like sk_find(), but will
2067 return an index to an element even if an exact match couldn't be
2068 found. The index is guaranteed to point at the element where the
2069 searched-for key would be inserted to preserve sorting order.
2072 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2073 takes an extra flags argument for optional functionality. Currently,
2074 the following flags are defined:
2076 OBJ_BSEARCH_VALUE_ON_NOMATCH
2077 This one gets OBJ_bsearch_ex() to return a pointer to the first
2078 element where the comparing function returns a negative or zero
2081 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2082 This one gets OBJ_bsearch_ex() to return a pointer to the first
2083 element where the comparing function returns zero. This is useful
2084 if there are more than one element where the comparing function
2088 *) Make it possible to create self-signed certificates with 'openssl ca'
2089 in such a way that the self-signed certificate becomes part of the
2090 CA database and uses the same mechanisms for serial number generation
2091 as all other certificate signing. The new flag '-selfsign' enables
2092 this functionality. Adapt CA.sh and CA.pl.in.
2095 *) Add functionality to check the public key of a certificate request
2096 against a given private. This is useful to check that a certificate
2097 request can be signed by that key (self-signing).
2100 *) Make it possible to have multiple active certificates with the same
2101 subject in the CA index file. This is done only if the keyword
2102 'unique_subject' is set to 'no' in the main CA section (default
2103 if 'CA_default') of the configuration file. The value is saved
2104 with the database itself in a separate index attribute file,
2105 named like the index file with '.attr' appended to the name.
2108 *) Generate muti valued AVAs using '+' notation in config files for
2112 *) Support for nameConstraints certificate extension.
2115 *) Support for policyConstraints certificate extension.
2118 *) Support for policyMappings certificate extension.
2121 *) Make sure the default DSA_METHOD implementation only uses its
2122 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2123 and change its own handlers to be NULL so as to remove unnecessary
2124 indirection. This lets alternative implementations fallback to the
2125 default implementation more easily.
2128 *) Support for directoryName in GeneralName related extensions
2132 *) Make it possible to link applications using Makefile.shared.
2133 Make that possible even when linking against static libraries!
2136 *) Support for single pass processing for S/MIME signing. This now
2137 means that S/MIME signing can be done from a pipe, in addition
2138 cleartext signing (multipart/signed type) is effectively streaming
2139 and the signed data does not need to be all held in memory.
2141 This is done with a new flag PKCS7_STREAM. When this flag is set
2142 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2143 is done after the data is output (and digests calculated) in
2144 SMIME_write_PKCS7().
2147 *) Add full support for -rpath/-R, both in shared libraries and
2148 applications, at least on the platforms where it's known how
2152 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2153 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2154 will now compute a table of multiples of the generator that
2155 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2156 faster (notably in the case of a single point multiplication,
2157 scalar * generator).
2158 [Nils Larsch, Bodo Moeller]
2160 *) IPv6 support for certificate extensions. The various extensions
2161 which use the IP:a.b.c.d can now take IPv6 addresses using the
2162 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2166 *) Added an ENGINE that implements RSA by performing private key
2167 exponentiations with the GMP library. The conversions to and from
2168 GMP's mpz_t format aren't optimised nor are any montgomery forms
2169 cached, and on x86 it appears OpenSSL's own performance has caught up.
2170 However there are likely to be other architectures where GMP could
2171 provide a boost. This ENGINE is not built in by default, but it can be
2172 specified at Configure time and should be accompanied by the necessary
2173 linker additions, eg;
2174 ./config -DOPENSSL_USE_GMP -lgmp
2177 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2178 testing availability of engines with "-t" - the old behaviour is
2179 produced by increasing the feature's verbosity with "-tt".
2182 *) ECDSA routines: under certain error conditions uninitialized BN objects
2183 could be freed. Solution: make sure initialization is performed early
2184 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2188 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2189 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2190 software implementations. For DSA and DH, parameter generation can
2191 also be overriden by providing the appropriate method callbacks.
2194 *) Change the "progress" mechanism used in key-generation and
2195 primality testing to functions that take a new BN_GENCB pointer in
2196 place of callback/argument pairs. The new API functions have "_ex"
2197 postfixes and the older functions are reimplemented as wrappers for
2198 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2199 declarations of the old functions to help (graceful) attempts to
2200 migrate to the new functions. Also, the new key-generation API
2201 functions operate on a caller-supplied key-structure and return
2202 success/failure rather than returning a key or NULL - this is to
2203 help make "keygen" another member function of RSA_METHOD etc.
2205 Example for using the new callback interface:
2207 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2211 BN_GENCB_set(&my_cb, my_callback, my_arg);
2213 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2214 /* For the meaning of a, b in calls to my_callback(), see the
2215 * documentation of the function that calls the callback.
2216 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2217 * my_callback should return 1 if it wants BN_is_prime_ex()
2218 * to continue, or 0 to stop.
2223 *) Change the ZLIB compression method to be stateful, and make it
2224 available to TLS with the number defined in
2225 draft-ietf-tls-compression-04.txt.
2228 *) Add the ASN.1 structures and functions for CertificatePair, which
2229 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2231 CertificatePair ::= SEQUENCE {
2232 forward [0] Certificate OPTIONAL,
2233 reverse [1] Certificate OPTIONAL,
2234 -- at least one of the pair shall be present -- }
2236 Also implement the PEM functions to read and write certificate
2237 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2239 This needed to be defined, mostly for the sake of the LDAP
2240 attribute crossCertificatePair, but may prove useful elsewhere as
2244 *) Make it possible to inhibit symlinking of shared libraries in
2245 Makefile.shared, for Cygwin's sake.
2248 *) Extend the BIGNUM API by creating a function
2249 void BN_set_negative(BIGNUM *a, int neg);
2250 and a macro that behave like
2251 int BN_is_negative(const BIGNUM *a);
2253 to avoid the need to access 'a->neg' directly in applications.
2256 *) Implement fast modular reduction for pseudo-Mersenne primes
2257 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2258 EC_GROUP_new_curve_GFp() will now automatically use this
2260 [Nils Larsch <nla@trustcenter.de>]
2262 *) Add new lock type (CRYPTO_LOCK_BN).
2265 *) Change the ENGINE framework to automatically load engines
2266 dynamically from specific directories unless they could be
2267 found to already be built in or loaded. Move all the
2268 current engines except for the cryptodev one to a new
2270 The engines in engines/ are built as shared libraries if
2271 the "shared" options was given to ./Configure or ./config.
2272 Otherwise, they are inserted in libcrypto.a.
2273 /usr/local/ssl/engines is the default directory for dynamic
2274 engines, but that can be overriden at configure time through
2275 the usual use of --prefix and/or --openssldir, and at run
2276 time with the environment variable OPENSSL_ENGINES.
2277 [Geoff Thorpe and Richard Levitte]
2279 *) Add Makefile.shared, a helper makefile to build shared
2280 libraries. Addapt Makefile.org.
2283 *) Add version info to Win32 DLLs.
2284 [Peter 'Luna' Runestig" <peter@runestig.com>]
2286 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2287 can be added using this API to created arbitrary PKCS#12
2288 files while avoiding the low level API.
2290 New options to PKCS12_create(), key or cert can be NULL and
2291 will then be omitted from the output file. The encryption
2292 algorithm NIDs can be set to -1 for no encryption, the mac
2293 iteration count can be set to 0 to omit the mac.
2295 Enhance pkcs12 utility by making the -nokeys and -nocerts
2296 options work when creating a PKCS#12 file. New option -nomac
2297 to omit the mac, NONE can be set for an encryption algorithm.
2298 New code is modified to use the enhanced PKCS12_create()
2299 instead of the low level API.
2302 *) Extend ASN1 encoder to support indefinite length constructed
2303 encoding. This can output sequences tags and octet strings in
2304 this form. Modify pk7_asn1.c to support indefinite length
2305 encoding. This is experimental and needs additional code to
2306 be useful, such as an ASN1 bio and some enhanced streaming
2309 Extend template encode functionality so that tagging is passed
2310 down to the template encoder.
2313 *) Let 'openssl req' fail if an argument to '-newkey' is not
2314 recognized instead of using RSA as a default.
2317 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2318 As these are not official, they are not included in "ALL";
2319 the "ECCdraft" ciphersuite group alias can be used to select them.
2320 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2322 *) Add ECDH engine support.
2323 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2325 *) Add ECDH in new directory crypto/ecdh/.
2326 [Douglas Stebila (Sun Microsystems Laboratories)]
2328 *) Let BN_rand_range() abort with an error after 100 iterations
2329 without success (which indicates a broken PRNG).
2332 *) Change BN_mod_sqrt() so that it verifies that the input value
2333 is really the square of the return value. (Previously,
2334 BN_mod_sqrt would show GIGO behaviour.)
2337 *) Add named elliptic curves over binary fields from X9.62, SECG,
2338 and WAP/WTLS; add OIDs that were still missing.
2340 [Sheueling Chang Shantz and Douglas Stebila
2341 (Sun Microsystems Laboratories)]
2343 *) Extend the EC library for elliptic curves over binary fields
2344 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2347 EC_GF2m_simple_method
2351 EC_GROUP_new_curve_GF2m
2352 EC_GROUP_set_curve_GF2m
2353 EC_GROUP_get_curve_GF2m
2354 EC_POINT_set_affine_coordinates_GF2m
2355 EC_POINT_get_affine_coordinates_GF2m
2356 EC_POINT_set_compressed_coordinates_GF2m
2358 Point compression for binary fields is disabled by default for
2359 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2362 As binary polynomials are represented as BIGNUMs, various members
2363 of the EC_GROUP and EC_POINT data structures can be shared
2364 between the implementations for prime fields and binary fields;
2365 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2366 are essentially identical to their ..._GFp counterparts.
2367 (For simplicity, the '..._GFp' prefix has been dropped from
2368 various internal method names.)
2370 An internal 'field_div' method (similar to 'field_mul' and
2371 'field_sqr') has been added; this is used only for binary fields.
2373 [Sheueling Chang Shantz and Douglas Stebila
2374 (Sun Microsystems Laboratories)]
2376 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2377 through methods ('mul', 'precompute_mult').
2379 The generic implementations (now internally called 'ec_wNAF_mul'
2380 and 'ec_wNAF_precomputed_mult') remain the default if these
2381 methods are undefined.
2383 [Sheueling Chang Shantz and Douglas Stebila
2384 (Sun Microsystems Laboratories)]
2386 *) New function EC_GROUP_get_degree, which is defined through
2387 EC_METHOD. For curves over prime fields, this returns the bit
2388 length of the modulus.
2390 [Sheueling Chang Shantz and Douglas Stebila
2391 (Sun Microsystems Laboratories)]
2393 *) New functions EC_GROUP_dup, EC_POINT_dup.
2394 (These simply call ..._new and ..._copy).
2396 [Sheueling Chang Shantz and Douglas Stebila
2397 (Sun Microsystems Laboratories)]
2399 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2400 Polynomials are represented as BIGNUMs (where the sign bit is not
2401 used) in the following functions [macros]:
2404 BN_GF2m_sub [= BN_GF2m_add]
2405 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2406 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2407 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2409 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2410 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2411 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2412 BN_GF2m_cmp [= BN_ucmp]
2414 (Note that only the 'mod' functions are actually for fields GF(2^m).
2415 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2417 For some functions, an the irreducible polynomial defining a
2418 field can be given as an 'unsigned int[]' with strictly
2419 decreasing elements giving the indices of those bits that are set;
2420 i.e., p[] represents the polynomial
2421 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2423 p[0] > p[1] > ... > p[k] = 0.
2424 This applies to the following functions:
2429 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2430 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2432 BN_GF2m_mod_sqrt_arr
2433 BN_GF2m_mod_solve_quad_arr
2437 Conversion can be performed by the following functions:
2442 bntest.c has additional tests for binary polynomial arithmetic.
2444 Two implementations for BN_GF2m_mod_div() are available.
2445 The default algorithm simply uses BN_GF2m_mod_inv() and
2446 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2447 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2448 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2450 [Sheueling Chang Shantz and Douglas Stebila
2451 (Sun Microsystems Laboratories)]
2453 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2454 functionality is disabled at compile-time.
2455 [Douglas Stebila <douglas.stebila@sun.com>]
2457 *) Change default behaviour of 'openssl asn1parse' so that more
2458 information is visible when viewing, e.g., a certificate:
2460 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2461 mode the content of non-printable OCTET STRINGs is output in a
2462 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2463 avoid the appearance of a printable string.
2464 [Nils Larsch <nla@trustcenter.de>]
2466 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2468 EC_GROUP_set_asn1_flag()
2469 EC_GROUP_get_asn1_flag()
2470 EC_GROUP_set_point_conversion_form()
2471 EC_GROUP_get_point_conversion_form()
2472 These control ASN1 encoding details:
2473 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2474 has been set to OPENSSL_EC_NAMED_CURVE.
2475 - Points are encoded in uncompressed form by default; options for
2476 asn1_for are as for point2oct, namely
2477 POINT_CONVERSION_COMPRESSED
2478 POINT_CONVERSION_UNCOMPRESSED
2479 POINT_CONVERSION_HYBRID
2481 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2484 EC_GROUP_get0_seed()
2485 EC_GROUP_get_seed_len()
2486 This is used only for ASN1 purposes (so far).
2487 [Nils Larsch <nla@trustcenter.de>]
2489 *) Add 'field_type' member to EC_METHOD, which holds the NID
2490 of the appropriate field type OID. The new function
2491 EC_METHOD_get_field_type() returns this value.
2492 [Nils Larsch <nla@trustcenter.de>]
2497 EC_POINT_point2hex()
2498 EC_POINT_hex2point()
2499 providing useful interfaces to EC_POINT_point2oct() and
2500 EC_POINT_oct2point().
2501 [Nils Larsch <nla@trustcenter.de>]
2503 *) Change internals of the EC library so that the functions
2504 EC_GROUP_set_generator()
2505 EC_GROUP_get_generator()
2506 EC_GROUP_get_order()
2507 EC_GROUP_get_cofactor()
2508 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2509 to methods, which would lead to unnecessary code duplication when
2510 adding different types of curves.
2511 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2513 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2514 arithmetic, and such that modified wNAFs are generated
2515 (which avoid length expansion in many cases).
2518 *) Add a function EC_GROUP_check_discriminant() (defined via
2519 EC_METHOD) that verifies that the curve discriminant is non-zero.
2521 Add a function EC_GROUP_check() that makes some sanity tests
2522 on a EC_GROUP, its generator and order. This includes
2523 EC_GROUP_check_discriminant().
2524 [Nils Larsch <nla@trustcenter.de>]
2526 *) Add ECDSA in new directory crypto/ecdsa/.
2528 Add applications 'openssl ecparam' and 'openssl ecdsa'
2529 (these are based on 'openssl dsaparam' and 'openssl dsa').
2531 ECDSA support is also included in various other files across the
2532 library. Most notably,
2533 - 'openssl req' now has a '-newkey ecdsa:file' option;
2534 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2535 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2536 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2537 them suitable for ECDSA where domain parameters must be
2538 extracted before the specific public key;
2539 - ECDSA engine support has been added.
2540 [Nils Larsch <nla@trustcenter.de>]
2542 *) Include some named elliptic curves, and add OIDs from X9.62,
2543 SECG, and WAP/WTLS. Each curve can be obtained from the new
2545 EC_GROUP_new_by_curve_name(),
2546 and the list of available named curves can be obtained with
2547 EC_get_builtin_curves().
2548 Also add a 'curve_name' member to EC_GROUP objects, which can be
2550 EC_GROUP_set_curve_name()
2551 EC_GROUP_get_curve_name()
2552 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2554 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2555 was actually never needed) and in BN_mul(). The removal in BN_mul()
2556 required a small change in bn_mul_part_recursive() and the addition
2557 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2558 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2559 bn_sub_words() and bn_add_words() except they take arrays with
2563 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2565 *) Cleanse PEM buffers before freeing them since they may contain
2567 [Benjamin Bennett <ben@psc.edu>]
2569 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2570 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2571 authentication-only ciphersuites.
2574 *) Since AES128 and AES256 share a single mask bit in the logic of
2575 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2576 kludge to work properly if AES128 is available and AES256 isn't.
2579 *) Expand security boundary to match 1.1.1 module.
2582 *) Remove redundant features: hash file source, editing of test vectors
2583 modify fipsld to use external fips_premain.c signature.
2586 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2587 run algorithm test programs.
2590 *) Make algorithm test programs more tolerant of whitespace.
2593 *) Have SSL/TLS server implementation tolerate "mismatched" record
2594 protocol version while receiving ClientHello even if the
2595 ClientHello is fragmented. (The server can't insist on the
2596 particular protocol version it has chosen before the ServerHello
2597 message has informed the client about his choice.)
2600 *) Load error codes if they are not already present instead of using a
2601 static variable. This allows them to be cleanly unloaded and reloaded.
2604 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2606 *) Introduce limits to prevent malicious keys being able to
2607 cause a denial of service. (CVE-2006-2940)
2608 [Steve Henson, Bodo Moeller]
2610 *) Fix ASN.1 parsing of certain invalid structures that can result
2611 in a denial of service. (CVE-2006-2937) [Steve Henson]
2613 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2614 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2616 *) Fix SSL client code which could crash if connecting to a
2617 malicious SSLv2 server. (CVE-2006-4343)
2618 [Tavis Ormandy and Will Drewry, Google Security Team]
2620 *) Change ciphersuite string processing so that an explicit
2621 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2622 will no longer include "AES128-SHA"), and any other similar
2623 ciphersuite (same bitmap) from *other* protocol versions (so that
2624 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2625 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2626 changes from 0.9.8b and 0.9.8d.
2629 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2631 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2632 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2634 *) Change the Unix randomness entropy gathering to use poll() when
2635 possible instead of select(), since the latter has some
2636 undesirable limitations.
2637 [Darryl Miles via Richard Levitte and Bodo Moeller]
2639 *) Disable rogue ciphersuites:
2641 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2642 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2643 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2645 The latter two were purportedly from
2646 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2649 Also deactive the remaining ciphersuites from
2650 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2651 unofficial, and the ID has long expired.
2654 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2655 dual-core machines) and other potential thread-safety issues.
2658 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2660 *) Adapt fipsld and the build system to link against the validated FIPS
2661 module in FIPS mode.
2664 *) Fixes for VC++ 2005 build under Windows.
2667 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2668 from a Windows bash shell such as MSYS. It is autodetected from the
2669 "config" script when run from a VC++ environment. Modify standard VC++
2670 build to use fipscanister.o from the GNU make build.
2673 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2675 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2676 The value now differs depending on if you build for FIPS or not.
2677 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2678 safely run with a non-FIPSed libcrypto, as it may crash because of
2679 the difference induced by this change.
2682 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2684 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2685 (part of SSL_OP_ALL). This option used to disable the
2686 countermeasure against man-in-the-middle protocol-version
2687 rollback in the SSL 2.0 server implementation, which is a bad
2688 idea. (CVE-2005-2969)
2690 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2691 for Information Security, National Institute of Advanced Industrial
2692 Science and Technology [AIST], Japan)]
2694 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2695 mainly for FIPS compliance and not fully integrated at this stage.
2698 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2699 the exponentiation using a fixed-length exponent. (Otherwise,
2700 the information leaked through timing could expose the secret key
2701 after many signatures; cf. Bleichenbacher's attack on DSA with
2705 *) Make a new fixed-window mod_exp implementation the default for
2706 RSA, DSA, and DH private-key operations so that the sequence of
2707 squares and multiplies and the memory access pattern are
2708 independent of the particular secret key. This will mitigate
2709 cache-timing and potential related attacks.
2711 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2712 and this is automatically used by BN_mod_exp_mont() if the new flag
2713 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2714 will use this BN flag for private exponents unless the flag
2715 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2716 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2718 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2720 *) Change the client implementation for SSLv23_method() and
2721 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2722 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2723 (Previously, the SSL 2.0 backwards compatible Client Hello
2724 message format would be used even with SSL_OP_NO_SSLv2.)
2727 *) Add support for smime-type MIME parameter in S/MIME messages which some
2731 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2732 a threadsafe manner. Modify rsa code to use new function and add calls
2733 to dsa and dh code (which had race conditions before).
2736 *) Include the fixed error library code in the C error file definitions
2737 instead of fixing them up at runtime. This keeps the error code
2738 structures constant.
2741 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2743 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2746 *) Fixes for newer kerberos headers. NB: the casts are needed because
2747 the 'length' field is signed on one version and unsigned on another
2748 with no (?) obvious way to tell the difference, without these VC++
2749 complains. Also the "definition" of FAR (blank) is no longer included
2750 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2751 some needed definitions.
2754 *) Undo Cygwin change.
2757 *) Added support for proxy certificates according to RFC 3820.
2758 Because they may be a security thread to unaware applications,
2759 they must be explicitely allowed in run-time. See
2760 docs/HOWTO/proxy_certificates.txt for further information.
2763 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2765 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2766 server and client random values. Previously
2767 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2768 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2770 This change has negligible security impact because:
2772 1. Server and client random values still have 24 bytes of pseudo random
2775 2. Server and client random values are sent in the clear in the initial
2778 3. The master secret is derived using the premaster secret (48 bytes in
2779 size for static RSA ciphersuites) as well as client server and random
2782 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2785 [Stephen Henson, reported by UK NISCC]
2787 *) Use Windows randomness collection on Cygwin.
2790 *) Fix hang in EGD/PRNGD query when communication socket is closed
2791 prematurely by EGD/PRNGD.
2792 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2794 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2797 *) Back-port of selected performance improvements from development
2798 branch, as well as improved support for PowerPC platforms.
2801 *) Add lots of checks for memory allocation failure, error codes to indicate
2802 failure and freeing up memory if a failure occurs.
2803 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2805 *) Add new -passin argument to dgst.
2808 *) Perform some character comparisons of different types in X509_NAME_cmp:
2809 this is needed for some certificates that reencode DNs into UTF8Strings
2810 (in violation of RFC3280) and can't or wont issue name rollover
2814 *) Make an explicit check during certificate validation to see that
2815 the CA setting in each certificate on the chain is correct. As a
2816 side effect always do the following basic checks on extensions,
2817 not just when there's an associated purpose to the check:
2819 - if there is an unhandled critical extension (unless the user
2820 has chosen to ignore this fault)
2821 - if the path length has been exceeded (if one is set at all)
2822 - that certain extensions fit the associated purpose (if one has
2826 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2828 *) Avoid a race condition when CRLs are checked in a multi threaded
2829 environment. This would happen due to the reordering of the revoked
2830 entries during signature checking and serial number lookup. Now the
2831 encoding is cached and the serial number sort performed under a lock.
2832 Add new STACK function sk_is_sorted().
2835 *) Add Delta CRL to the extension code.
2838 *) Various fixes to s3_pkt.c so alerts are sent properly.
2839 [David Holmes <d.holmes@f5.com>]
2841 *) Reduce the chances of duplicate issuer name and serial numbers (in
2842 violation of RFC3280) using the OpenSSL certificate creation utilities.
2843 This is done by creating a random 64 bit value for the initial serial
2844 number when a serial number file is created or when a self signed
2845 certificate is created using 'openssl req -x509'. The initial serial
2846 number file is created using 'openssl x509 -next_serial' in CA.pl
2847 rather than being initialized to 1.
2850 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2852 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2853 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2854 [Joe Orton, Steve Henson]
2856 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2858 [Joe Orton, Steve Henson]
2860 *) Make it possible to have multiple active certificates with the same
2861 subject in the CA index file. This is done only if the keyword
2862 'unique_subject' is set to 'no' in the main CA section (default
2863 if 'CA_default') of the configuration file. The value is saved
2864 with the database itself in a separate index attribute file,
2865 named like the index file with '.attr' appended to the name.
2868 *) X509 verify fixes. Disable broken certificate workarounds when
2869 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2870 keyUsage extension present. Don't accept CRLs with unhandled critical
2871 extensions: since verify currently doesn't process CRL extensions this
2872 rejects a CRL with *any* critical extensions. Add new verify error codes
2876 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2877 A clarification of RFC2560 will require the use of OCTET STRINGs and
2878 some implementations cannot handle the current raw format. Since OpenSSL
2879 copies and compares OCSP nonces as opaque blobs without any attempt at
2880 parsing them this should not create any compatibility issues.
2883 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2884 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2885 this HMAC (and other) operations are several times slower than OpenSSL
2889 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2890 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2892 *) Use the correct content when signing type "other".
2895 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2897 *) Fix various bugs revealed by running the NISCC test suite:
2899 Stop out of bounds reads in the ASN1 code when presented with
2900 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2902 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2904 If verify callback ignores invalid public key errors don't try to check
2905 certificate signature with the NULL public key.
2909 *) New -ignore_err option in ocsp application to stop the server
2910 exiting on the first error in a request.
2913 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2914 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2918 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2919 extra data after the compression methods not only for TLS 1.0
2920 but also for SSL 3.0 (as required by the specification).
2921 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2923 *) Change X509_certificate_type() to mark the key as exported/exportable
2924 when it's 512 *bits* long, not 512 bytes.
2927 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2928 blocks during encryption.
2931 *) Various fixes to base64 BIO and non blocking I/O. On write
2932 flushes were not handled properly if the BIO retried. On read
2933 data was not being buffered properly and had various logic bugs.
2934 This also affects blocking I/O when the data being decoded is a
2938 *) Various S/MIME bugfixes and compatibility changes:
2939 output correct application/pkcs7 MIME type if
2940 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2941 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2942 of files as .eml work). Correctly handle very long lines in MIME
2946 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2948 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2949 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2950 a protocol version number mismatch like a decryption error
2951 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2954 *) Turn on RSA blinding by default in the default implementation
2955 to avoid a timing attack. Applications that don't want it can call
2956 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2957 They would be ill-advised to do so in most cases.
2958 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2960 *) Change RSA blinding code so that it works when the PRNG is not
2961 seeded (in this case, the secret RSA exponent is abused as
2962 an unpredictable seed -- if it is not unpredictable, there
2963 is no point in blinding anyway). Make RSA blinding thread-safe
2964 by remembering the creator's thread ID in rsa->blinding and
2965 having all other threads use local one-time blinding factors
2966 (this requires more computation than sharing rsa->blinding, but
2967 avoids excessive locking; and if an RSA object is not shared
2968 between threads, blinding will still be very fast).
2971 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2972 ENGINE as defaults for all supported algorithms irrespective of
2973 the 'flags' parameter. 'flags' is now honoured, so applications
2974 should make sure they are passing it correctly.
2977 *) Target "mingw" now allows native Windows code to be generated in
2978 the Cygwin environment as well as with the MinGW compiler.
2981 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2983 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2984 via timing by performing a MAC computation even if incorrrect
2985 block cipher padding has been found. This is a countermeasure
2986 against active attacks where the attacker has to distinguish
2987 between bad padding and a MAC verification error. (CVE-2003-0078)
2989 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2990 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2991 Martin Vuagnoux (EPFL, Ilion)]
2993 *) Make the no-err option work as intended. The intention with no-err
2994 is not to have the whole error stack handling routines removed from
2995 libcrypto, it's only intended to remove all the function name and
2996 reason texts, thereby removing some of the footprint that may not
2997 be interesting if those errors aren't displayed anyway.
2999 NOTE: it's still possible for any application or module to have it's
3000 own set of error texts inserted. The routines are there, just not
3001 used by default when no-err is given.
3004 *) Add support for FreeBSD on IA64.
3005 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3007 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3008 Kerberos function mit_des_cbc_cksum(). Before this change,
3009 the value returned by DES_cbc_cksum() was like the one from
3010 mit_des_cbc_cksum(), except the bytes were swapped.
3011 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3013 *) Allow an application to disable the automatic SSL chain building.
3014 Before this a rather primitive chain build was always performed in
3015 ssl3_output_cert_chain(): an application had no way to send the
3016 correct chain if the automatic operation produced an incorrect result.
3018 Now the chain builder is disabled if either:
3020 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3022 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3024 The reasoning behind this is that an application would not want the
3025 auto chain building to take place if extra chain certificates are
3026 present and it might also want a means of sending no additional
3027 certificates (for example the chain has two certificates and the
3031 *) Add the possibility to build without the ENGINE framework.
3032 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3034 *) Under Win32 gmtime() can return NULL: check return value in
3035 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3038 *) DSA routines: under certain error conditions uninitialized BN objects
3039 could be freed. Solution: make sure initialization is performed early
3040 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3041 Nils Larsch <nla@trustcenter.de> via PR#459)
3044 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3045 checked on reconnect on the client side, therefore session resumption
3046 could still fail with a "ssl session id is different" error. This
3047 behaviour is masked when SSL_OP_ALL is used due to
3048 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3049 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3050 followup to PR #377.
3053 *) IA-32 assembler support enhancements: unified ELF targets, support
3054 for SCO/Caldera platforms, fix for Cygwin shared build.
3057 *) Add support for FreeBSD on sparc64. As a consequence, support for
3058 FreeBSD on non-x86 processors is separate from x86 processors on
3059 the config script, much like the NetBSD support.
3060 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3062 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3064 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3067 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3068 code (06) was taken as the first octet of the session ID and the last
3069 octet was ignored consequently. As a result SSLv2 client side session
3070 caching could not have worked due to the session ID mismatch between
3072 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3076 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3077 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3081 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3082 seems that in spite of existing for more than a year, many application
3083 author have done nothing to provide the necessary callbacks, which
3084 means that this particular engine will not work properly anywhere.
3085 This is a very unfortunate situation which forces us, in the name
3086 of usability, to give the hw_ncipher.c a static lock, which is part
3088 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3089 appear in 0.9.8 or later. We EXPECT application authors to have
3090 dealt properly with this when 0.9.8 is released (unless we actually
3091 make such changes in the libcrypto locking code that changes will
3092 have to be made anyway).
3095 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3096 octets have been read, EOF or an error occurs. Without this change
3097 some truncated ASN1 structures will not produce an error.
3100 *) Disable Heimdal support, since it hasn't been fully implemented.
3101 Still give the possibility to force the use of Heimdal, but with
3102 warnings and a request that patches get sent to openssl-dev.
3105 *) Add the VC-CE target, introduce the WINCE sysname, and add
3106 INSTALL.WCE and appropriate conditionals to make it build.
3107 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3109 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3110 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3111 edit numbers of the version.
3112 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3114 *) Introduce safe string copy and catenation functions
3115 (BUF_strlcpy() and BUF_strlcat()).
3116 [Ben Laurie (CHATS) and Richard Levitte]
3118 *) Avoid using fixed-size buffers for one-line DNs.
3119 [Ben Laurie (CHATS)]
3121 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3122 resizing buffers containing secrets, and use where appropriate.
3123 [Ben Laurie (CHATS)]
3125 *) Avoid using fixed size buffers for configuration file location.
3126 [Ben Laurie (CHATS)]
3128 *) Avoid filename truncation for various CA files.
3129 [Ben Laurie (CHATS)]
3131 *) Use sizeof in preference to magic numbers.
3132 [Ben Laurie (CHATS)]
3134 *) Avoid filename truncation in cert requests.
3135 [Ben Laurie (CHATS)]
3137 *) Add assertions to check for (supposedly impossible) buffer
3139 [Ben Laurie (CHATS)]
3141 *) Don't cache truncated DNS entries in the local cache (this could
3142 potentially lead to a spoofing attack).
3143 [Ben Laurie (CHATS)]
3145 *) Fix various buffers to be large enough for hex/decimal
3146 representations in a platform independent manner.
3147 [Ben Laurie (CHATS)]
3149 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3150 resizing buffers containing secrets, and use where appropriate.
3151 [Ben Laurie (CHATS)]
3153 *) Add BIO_indent() to avoid much slightly worrying code to do
3155 [Ben Laurie (CHATS)]
3157 *) Convert sprintf()/BIO_puts() to BIO_printf().
3158 [Ben Laurie (CHATS)]
3160 *) buffer_gets() could terminate with the buffer only half
3162 [Ben Laurie (CHATS)]
3164 *) Add assertions to prevent user-supplied crypto functions from
3165 overflowing internal buffers by having large block sizes, etc.
3166 [Ben Laurie (CHATS)]
3168 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3170 [Ben Laurie (CHATS)]
3172 *) Eliminate unused copy of key in RC4.
3173 [Ben Laurie (CHATS)]
3175 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3176 [Ben Laurie (CHATS)]
3178 *) Fix off-by-one error in EGD path.
3179 [Ben Laurie (CHATS)]
3181 *) If RANDFILE path is too long, ignore instead of truncating.
3182 [Ben Laurie (CHATS)]
3184 *) Eliminate unused and incorrectly sized X.509 structure
3186 [Ben Laurie (CHATS)]
3188 *) Eliminate unused and dangerous function knumber().
3189 [Ben Laurie (CHATS)]
3191 *) Eliminate unused and dangerous structure, KSSL_ERR.
3192 [Ben Laurie (CHATS)]
3194 *) Protect against overlong session ID context length in an encoded
3195 session object. Since these are local, this does not appear to be
3197 [Ben Laurie (CHATS)]
3199 *) Change from security patch (see 0.9.6e below) that did not affect
3200 the 0.9.6 release series:
3202 Remote buffer overflow in SSL3 protocol - an attacker could
3203 supply an oversized master key in Kerberos-enabled versions.
3205 [Ben Laurie (CHATS)]
3207 *) Change the SSL kerb5 codes to match RFC 2712.
3210 *) Make -nameopt work fully for req and add -reqopt switch.
3211 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3213 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3214 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3216 *) Make sure tests can be performed even if the corresponding algorithms
3217 have been removed entirely. This was also the last step to make
3218 OpenSSL compilable with DJGPP under all reasonable conditions.
3219 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3221 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3222 to allow version independent disabling of normally unselected ciphers,
3223 which may be activated as a side-effect of selecting a single cipher.
3225 (E.g., cipher list string "RSA" enables ciphersuites that are left
3226 out of "ALL" because they do not provide symmetric encryption.
3227 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3228 [Lutz Jaenicke, Bodo Moeller]
3230 *) Add appropriate support for separate platform-dependent build
3231 directories. The recommended way to make a platform-dependent
3232 build directory is the following (tested on Linux), maybe with
3235 # Place yourself outside of the OpenSSL source tree. In
3236 # this example, the environment variable OPENSSL_SOURCE
3237 # is assumed to contain the absolute OpenSSL source directory.
3238 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3239 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3240 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3241 mkdir -p `dirname $F`
3242 ln -s $OPENSSL_SOURCE/$F $F
3245 To be absolutely sure not to disturb the source tree, a "make clean"
3246 is a good thing. If it isn't successfull, don't worry about it,
3247 it probably means the source directory is very clean.
3250 *) Make sure any ENGINE control commands make local copies of string
3251 pointers passed to them whenever necessary. Otherwise it is possible
3252 the caller may have overwritten (or deallocated) the original string
3253 data when a later ENGINE operation tries to use the stored values.
3254 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3256 *) Improve diagnostics in file reading and command-line digests.
3257 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3259 *) Add AES modes CFB and OFB to the object database. Correct an
3260 error in AES-CFB decryption.
3263 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3264 allows existing EVP_CIPHER_CTX structures to be reused after
3265 calling EVP_*Final(). This behaviour is used by encryption
3266 BIOs and some applications. This has the side effect that
3267 applications must explicitly clean up cipher contexts with
3268 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3271 *) Check the values of dna and dnb in bn_mul_recursive before calling
3272 bn_mul_comba (a non zero value means the a or b arrays do not contain
3273 n2 elements) and fallback to bn_mul_normal if either is not zero.
3276 *) Fix escaping of non-ASCII characters when using the -subj option
3277 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3280 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3281 form for "surname", serialNumber has no short form.
3282 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3283 therefore remove "mail" short name for "internet 7".
3284 The OID for unique identifiers in X509 certificates is
3285 x500UniqueIdentifier, not uniqueIdentifier.
3286 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3289 *) Add an "init" command to the ENGINE config module and auto initialize
3290 ENGINEs. Without any "init" command the ENGINE will be initialized
3291 after all ctrl commands have been executed on it. If init=1 the
3292 ENGINE is initailized at that point (ctrls before that point are run
3293 on the uninitialized ENGINE and after on the initialized one). If
3294 init=0 then the ENGINE will not be iniatialized at all.
3297 *) Fix the 'app_verify_callback' interface so that the user-defined
3298 argument is actually passed to the callback: In the
3299 SSL_CTX_set_cert_verify_callback() prototype, the callback
3300 declaration has been changed from
3303 int (*cb)(X509_STORE_CTX *,void *);
3304 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3305 i=s->ctx->app_verify_callback(&ctx)
3306 has been changed into
3307 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3309 To update applications using SSL_CTX_set_cert_verify_callback(),
3310 a dummy argument can be added to their callback functions.
3311 [D. K. Smetters <smetters@parc.xerox.com>]
3313 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3314 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3316 *) Add and OPENSSL_LOAD_CONF define which will cause
3317 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3318 This allows older applications to transparently support certain
3319 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3320 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3321 load the config file and OPENSSL_add_all_algorithms_conf() which will
3322 always load it have also been added.
3325 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3326 Adjust NIDs and EVP layer.
3327 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3329 *) Config modules support in openssl utility.
3331 Most commands now load modules from the config file,
3332 though in a few (such as version) this isn't done
3333 because it couldn't be used for anything.
3335 In the case of ca and req the config file used is
3336 the same as the utility itself: that is the -config
3337 command line option can be used to specify an
3341 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3342 use "openssl_conf" if filename is NULL use default openssl config file.
3345 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3346 config section name. Add a new flag to tolerate a missing config file
3347 and move code to CONF_modules_load_file().
3350 *) Support for crypto accelerator cards from Accelerated Encryption
3351 Processing, www.aep.ie. (Use engine 'aep')
3352 The support was copied from 0.9.6c [engine] and adapted/corrected
3353 to work with the new engine framework.
3354 [AEP Inc. and Richard Levitte]
3356 *) Support for SureWare crypto accelerator cards from Baltimore
3357 Technologies. (Use engine 'sureware')
3358 The support was copied from 0.9.6c [engine] and adapted
3359 to work with the new engine framework.
3362 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3363 make the newer ENGINE framework commands for the CHIL engine work.
3364 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3366 *) Make it possible to produce shared libraries on ReliantUNIX.
3367 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3369 *) Add the configuration target debug-linux-ppro.
3370 Make 'openssl rsa' use the general key loading routines
3371 implemented in apps.c, and make those routines able to
3372 handle the key format FORMAT_NETSCAPE and the variant
3374 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3376 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3377 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3379 *) Add -keyform to rsautl, and document -engine.
3380 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3382 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3383 BIO_R_NO_SUCH_FILE error code rather than the generic
3384 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3387 *) Add new functions
3389 ERR_peek_last_error_line
3390 ERR_peek_last_error_line_data.
3391 These are similar to
3394 ERR_peek_error_line_data,
3395 but report on the latest error recorded rather than the first one
3396 still in the error queue.
3397 [Ben Laurie, Bodo Moeller]
3399 *) default_algorithms option in ENGINE config module. This allows things
3401 default_algorithms = ALL
3402 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3405 *) Prelminary ENGINE config module.
3408 *) New experimental application configuration code.
3411 *) Change the AES code to follow the same name structure as all other
3412 symmetric ciphers, and behave the same way. Move everything to
3413 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3414 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3416 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3417 [Ben Laurie and Theo de Raadt]
3419 *) Add option to output public keys in req command.
3420 [Massimiliano Pala madwolf@openca.org]
3422 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3423 (up to about 10% better than before for P-192 and P-224).
3426 *) New functions/macros
3428 SSL_CTX_set_msg_callback(ctx, cb)
3429 SSL_CTX_set_msg_callback_arg(ctx, arg)
3430 SSL_set_msg_callback(ssl, cb)
3431 SSL_set_msg_callback_arg(ssl, arg)
3433 to request calling a callback function
3435 void cb(int write_p, int version, int content_type,
3436 const void *buf, size_t len, SSL *ssl, void *arg)
3438 whenever a protocol message has been completely received
3439 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3440 protocol version according to which the SSL library interprets
3441 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3442 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3443 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3444 specification (change_cipher_spec(20), alert(21), handshake(22)).
3445 'buf' and 'len' point to the actual message, 'ssl' to the
3446 SSL object, and 'arg' is the application-defined value set by
3447 SSL[_CTX]_set_msg_callback_arg().
3449 'openssl s_client' and 'openssl s_server' have new '-msg' options
3450 to enable a callback that displays all protocol messages.
3453 *) Change the shared library support so shared libraries are built as
3454 soon as the corresponding static library is finished, and thereby get
3455 openssl and the test programs linked against the shared library.
3456 This still only happens when the keyword "shard" has been given to
3457 the configuration scripts.
3459 NOTE: shared library support is still an experimental thing, and
3460 backward binary compatibility is still not guaranteed.
3461 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3463 *) Add support for Subject Information Access extension.
3464 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3466 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3467 additional bytes when new memory had to be allocated, not just
3468 when reusing an existing buffer.
3471 *) New command line and configuration option 'utf8' for the req command.
3472 This allows field values to be specified as UTF8 strings.
3475 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3476 runs for the former and machine-readable output for the latter.
3479 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3480 of the e-mail address in the DN (i.e., it will go into a certificate
3481 extension only). The new configuration file option 'email_in_dn = no'
3482 has the same effect.
3483 [Massimiliano Pala madwolf@openca.org]
3485 *) Change all functions with names starting with des_ to be starting
3486 with DES_ instead. Add wrappers that are compatible with libdes,
3487 but are named _ossl_old_des_*. Finally, add macros that map the
3488 des_* symbols to the corresponding _ossl_old_des_* if libdes
3489 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3490 desired, the des_* symbols will be mapped to DES_*, with one
3493 Since we provide two compatibility mappings, the user needs to
3494 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3495 compatibility is desired. The default (i.e., when that macro
3496 isn't defined) is OpenSSL 0.9.6c compatibility.
3498 There are also macros that enable and disable the support of old
3499 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3500 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3501 are defined, the default will apply: to support the old des routines.
3503 In either case, one must include openssl/des.h to get the correct
3504 definitions. Do not try to just include openssl/des_old.h, that
3507 NOTE: This is a major break of an old API into a new one. Software
3508 authors are encouraged to switch to the DES_ style functions. Some
3509 time in the future, des_old.h and the libdes compatibility functions
3510 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3511 default), and then completely removed.
3514 *) Test for certificates which contain unsupported critical extensions.
3515 If such a certificate is found during a verify operation it is
3516 rejected by default: this behaviour can be overridden by either
3517 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3518 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3519 X509_supported_extension() has also been added which returns 1 if a
3520 particular extension is supported.
3523 *) Modify the behaviour of EVP cipher functions in similar way to digests
3524 to retain compatibility with existing code.
3527 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3528 compatibility with existing code. In particular the 'ctx' parameter does
3529 not have to be to be initialized before the call to EVP_DigestInit() and
3530 it is tidied up after a call to EVP_DigestFinal(). New function
3531 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3532 EVP_MD_CTX_copy() changed to not require the destination to be
3533 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3534 requires the destination to be valid.
3536 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3537 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3540 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3541 so that complete 'Handshake' protocol structures are kept in memory
3542 instead of overwriting 'msg_type' and 'length' with 'body' data.
3545 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3546 [Massimo Santin via Richard Levitte]
3548 *) Major restructuring to the underlying ENGINE code. This includes
3549 reduction of linker bloat, separation of pure "ENGINE" manipulation
3550 (initialisation, etc) from functionality dealing with implementations
3551 of specific crypto iterfaces. This change also introduces integrated
3552 support for symmetric ciphers and digest implementations - so ENGINEs
3553 can now accelerate these by providing EVP_CIPHER and EVP_MD
3554 implementations of their own. This is detailed in crypto/engine/README
3555 as it couldn't be adequately described here. However, there are a few
3556 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3557 were changed in the original introduction of ENGINE code have now
3558 reverted back - the hooking from this code to ENGINE is now a good
3559 deal more passive and at run-time, operations deal directly with
3560 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3561 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3562 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3563 they were not being used by the framework as there is no concept of a
3564 BIGNUM_METHOD and they could not be generalised to the new
3565 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3566 ENGINE_cpy() has been removed as it cannot be consistently defined in
3570 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3573 *) Change mkdef.pl to sort symbols that get the same entry number,
3574 and make sure the automatically generated functions ERR_load_*
3575 become part of libeay.num as well.
3578 *) New function SSL_renegotiate_pending(). This returns true once
3579 renegotiation has been requested (either SSL_renegotiate() call
3580 or HelloRequest/ClientHello receveived from the peer) and becomes
3581 false once a handshake has been completed.
3582 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3583 sends a HelloRequest, but does not ensure that a handshake takes
3584 place. SSL_renegotiate_pending() is useful for checking if the
3585 client has followed the request.)
3588 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3589 By default, clients may request session resumption even during
3590 renegotiation (if session ID contexts permit); with this option,
3591 session resumption is possible only in the first handshake.
3593 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3594 more bits available for options that should not be part of
3595 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3598 *) Add some demos for certificate and certificate request creation.
3601 *) Make maximum certificate chain size accepted from the peer application
3602 settable (SSL*_get/set_max_cert_list()), as proposed by
3603 "Douglas E. Engert" <deengert@anl.gov>.
3606 *) Add support for shared libraries for Unixware-7
3607 (Boyd Lynn Gerber <gerberb@zenez.com>).
3610 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3611 be done prior to destruction. Use this to unload error strings from
3612 ENGINEs that load their own error strings. NB: This adds two new API
3613 functions to "get" and "set" this destroy handler in an ENGINE.
3616 *) Alter all existing ENGINE implementations (except "openssl" and
3617 "openbsd") to dynamically instantiate their own error strings. This
3618 makes them more flexible to be built both as statically-linked ENGINEs
3619 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3620 Also, add stub code to each that makes building them as self-contained
3621 shared-libraries easier (see README.ENGINE).
3624 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3625 implementations into applications that are completely implemented in
3626 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3627 commands that can be used to configure what shared-library to load and
3628 to control aspects of the way it is handled. Also, made an update to
3629 the README.ENGINE file that brings its information up-to-date and
3630 provides some information and instructions on the "dynamic" ENGINE
3631 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3634 *) Make it possible to unload ranges of ERR strings with a new
3635 "ERR_unload_strings" function.
3638 *) Add a copy() function to EVP_MD.
3641 *) Make EVP_MD routines take a context pointer instead of just the
3642 md_data void pointer.
3645 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3646 that the digest can only process a single chunk of data
3647 (typically because it is provided by a piece of
3648 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3649 is only going to provide a single chunk of data, and hence the
3650 framework needn't accumulate the data for oneshot drivers.
3653 *) As with "ERR", make it possible to replace the underlying "ex_data"
3654 functions. This change also alters the storage and management of global
3655 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3656 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3657 index counters. The API functions that use this state have been changed
3658 to take a "class_index" rather than pointers to the class's local STACK
3659 and counter, and there is now an API function to dynamically create new
3660 classes. This centralisation allows us to (a) plug a lot of the
3661 thread-safety problems that existed, and (b) makes it possible to clean
3662 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3663 such data would previously have always leaked in application code and
3664 workarounds were in place to make the memory debugging turn a blind eye
3665 to it. Application code that doesn't use this new function will still
3666 leak as before, but their memory debugging output will announce it now
3667 rather than letting it slide.
3669 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3670 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3671 has a return value to indicate success or failure.
3674 *) Make it possible to replace the underlying "ERR" functions such that the
3675 global state (2 LHASH tables and 2 locks) is only used by the "default"
3676 implementation. This change also adds two functions to "get" and "set"
3677 the implementation prior to it being automatically set the first time
3678 any other ERR function takes place. Ie. an application can call "get",
3679 pass the return value to a module it has just loaded, and that module
3680 can call its own "set" function using that value. This means the
3681 module's "ERR" operations will use (and modify) the error state in the
3682 application and not in its own statically linked copy of OpenSSL code.
3685 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3686 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3687 the operation, and provides a more encapsulated way for external code
3688 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3689 to use these functions rather than manually incrementing the counts.
3691 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3694 *) Add EVP test program.
3697 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3700 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3701 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3702 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3703 These allow a CRL to be built without having to access X509_CRL fields
3704 directly. Modify 'ca' application to use new functions.
3707 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3708 bug workarounds. Rollback attack detection is a security feature.
3709 The problem will only arise on OpenSSL servers when TLSv1 is not
3710 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3711 Software authors not wanting to support TLSv1 will have special reasons
3712 for their choice and can explicitly enable this option.
3713 [Bodo Moeller, Lutz Jaenicke]
3715 *) Rationalise EVP so it can be extended: don't include a union of
3716 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3717 (similar to those existing for EVP_CIPHER_CTX).
3722 EVP_MD_CTX_init(&md); /* new function call */
3723 EVP_DigestInit(&md, EVP_sha1());
3724 EVP_DigestUpdate(&md, in, len);
3725 EVP_DigestFinal(&md, out, NULL);
3726 EVP_MD_CTX_cleanup(&md); /* new function call */
3730 *) Make DES key schedule conform to the usual scheme, as well as
3731 correcting its structure. This means that calls to DES functions
3732 now have to pass a pointer to a des_key_schedule instead of a
3733 plain des_key_schedule (which was actually always a pointer
3736 des_key_schedule ks;
3738 des_set_key_checked(..., &ks);
3739 des_ncbc_encrypt(..., &ks, ...);
3741 (Note that a later change renames 'des_...' into 'DES_...'.)
3744 *) Initial reduction of linker bloat: the use of some functions, such as
3745 PEM causes large amounts of unused functions to be linked in due to
3746 poor organisation. For example pem_all.c contains every PEM function
3747 which has a knock on effect of linking in large amounts of (unused)
3748 ASN1 code. Grouping together similar functions and splitting unrelated
3749 functions prevents this.
3752 *) Cleanup of EVP macros.
3755 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3756 correct _ecb suffix.
3759 *) Add initial OCSP responder support to ocsp application. The
3760 revocation information is handled using the text based index
3761 use by the ca application. The responder can either handle
3762 requests generated internally, supplied in files (for example
3763 via a CGI script) or using an internal minimal server.
3766 *) Add configuration choices to get zlib compression for TLS.
3769 *) Changes to Kerberos SSL for RFC 2712 compliance:
3770 1. Implemented real KerberosWrapper, instead of just using
3771 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3772 2. Implemented optional authenticator field of KerberosWrapper.
3774 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3775 and authenticator structs; see crypto/krb5/.
3777 Generalized Kerberos calls to support multiple Kerberos libraries.
3778 [Vern Staats <staatsvr@asc.hpc.mil>,
3779 Jeffrey Altman <jaltman@columbia.edu>
3780 via Richard Levitte]
3782 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3783 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3784 values for each of the key sizes rather than having just
3785 parameters (and 'speed' generating keys each time).
3788 *) Speed up EVP routines.
3791 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3792 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3793 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3794 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3796 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3797 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3798 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3801 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3803 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3806 *) Added the OS2-EMX target.
3807 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3809 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3810 to support NCONF routines in extension code. New function CONF_set_nconf()
3811 to allow functions which take an NCONF to also handle the old LHASH
3812 structure: this means that the old CONF compatible routines can be
3813 retained (in particular wrt extensions) without having to duplicate the
3814 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3817 *) Enhance the general user interface with mechanisms for inner control
3818 and with possibilities to have yes/no kind of prompts.
3821 *) Change all calls to low level digest routines in the library and
3822 applications to use EVP. Add missing calls to HMAC_cleanup() and
3823 don't assume HMAC_CTX can be copied using memcpy().
3824 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3826 *) Add the possibility to control engines through control names but with
3827 arbitrary arguments instead of just a string.
3828 Change the key loaders to take a UI_METHOD instead of a callback
3829 function pointer. NOTE: this breaks binary compatibility with earlier
3830 versions of OpenSSL [engine].
3831 Adapt the nCipher code for these new conditions and add a card insertion
3835 *) Enhance the general user interface with mechanisms to better support
3836 dialog box interfaces, application-defined prompts, the possibility
3837 to use defaults (for example default passwords from somewhere else)
3838 and interrupts/cancellations.
3841 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3842 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3845 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3846 tidy up some unnecessarily weird code in 'sk_new()').
3847 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3849 *) Change the key loading routines for ENGINEs to use the same kind
3850 callback (pem_password_cb) as all other routines that need this
3854 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3855 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3856 than this minimum value is recommended.
3859 *) New random seeder for OpenVMS, using the system process statistics
3860 that are easily reachable.
3863 *) Windows apparently can't transparently handle global
3864 variables defined in DLLs. Initialisations such as:
3866 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3868 wont compile. This is used by the any applications that need to
3869 declare their own ASN1 modules. This was fixed by adding the option
3870 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3871 needed for static libraries under Win32.
3874 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3875 setting of purpose and trust fields. New X509_STORE trust and
3876 purpose functions and tidy up setting in other SSL functions.
3879 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3880 structure. These are inherited by X509_STORE_CTX when it is
3881 initialised. This allows various defaults to be set in the
3882 X509_STORE structure (such as flags for CRL checking and custom
3883 purpose or trust settings) for functions which only use X509_STORE_CTX
3884 internally such as S/MIME.
3886 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3887 trust settings if they are not set in X509_STORE. This allows X509_STORE
3888 purposes and trust (in S/MIME for example) to override any set by default.
3890 Add command line options for CRL checking to smime, s_client and s_server
3894 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3895 are set then the CRL is looked up in the X509_STORE structure and
3896 its validity and signature checked, then if the certificate is found
3897 in the CRL the verify fails with a revoked error.
3899 Various new CRL related callbacks added to X509_STORE_CTX structure.
3901 Command line options added to 'verify' application to support this.
3903 This needs some additional work, such as being able to handle multiple
3904 CRLs with different times, extension based lookup (rather than just
3905 by subject name) and ultimately more complete V2 CRL extension
3909 *) Add a general user interface API (crypto/ui/). This is designed
3910 to replace things like des_read_password and friends (backward
3911 compatibility functions using this new API are provided).
3912 The purpose is to remove prompting functions from the DES code
3913 section as well as provide for prompting through dialog boxes in
3914 a window system and the like.
3917 *) Add "ex_data" support to ENGINE so implementations can add state at a
3918 per-structure level rather than having to store it globally.
3921 *) Make it possible for ENGINE structures to be copied when retrieved by
3922 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3923 This causes the "original" ENGINE structure to act like a template,
3924 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3925 operational state can be localised to each ENGINE structure, despite the
3926 fact they all share the same "methods". New ENGINE structures returned in
3927 this case have no functional references and the return value is the single
3928 structural reference. This matches the single structural reference returned
3929 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3933 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3934 needs to match any other type at all we need to manually clear the
3938 *) Changes to the "openssl engine" utility to include;
3939 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3940 about an ENGINE's available control commands.
3941 - executing control commands from command line arguments using the
3942 '-pre' and '-post' switches. '-post' is only used if '-t' is
3943 specified and the ENGINE is successfully initialised. The syntax for
3944 the individual commands are colon-separated, for example;
3945 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3948 *) New dynamic control command support for ENGINEs. ENGINEs can now
3949 declare their own commands (numbers), names (strings), descriptions,
3950 and input types for run-time discovery by calling applications. A
3951 subset of these commands are implicitly classed as "executable"
3952 depending on their input type, and only these can be invoked through
3953 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3954 can be based on user input, config files, etc). The distinction is
3955 that "executable" commands cannot return anything other than a boolean
3956 result and can only support numeric or string input, whereas some
3957 discoverable commands may only be for direct use through
3958 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3959 pointers, or other custom uses. The "executable" commands are to
3960 support parameterisations of ENGINE behaviour that can be
3961 unambiguously defined by ENGINEs and used consistently across any
3962 OpenSSL-based application. Commands have been added to all the
3963 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3964 control over shared-library paths without source code alterations.
3967 *) Changed all ENGINE implementations to dynamically allocate their
3968 ENGINEs rather than declaring them statically. Apart from this being
3969 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3970 this also allows the implementations to compile without using the
3971 internal engine_int.h header.
3974 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3975 'const' value. Any code that should be able to modify a RAND_METHOD
3976 should already have non-const pointers to it (ie. they should only
3977 modify their own ones).
3980 *) Made a variety of little tweaks to the ENGINE code.
3981 - "atalla" and "ubsec" string definitions were moved from header files
3982 to C code. "nuron" string definitions were placed in variables
3983 rather than hard-coded - allowing parameterisation of these values
3984 later on via ctrl() commands.
3985 - Removed unused "#if 0"'d code.
3986 - Fixed engine list iteration code so it uses ENGINE_free() to release
3987 structural references.
3988 - Constified the RAND_METHOD element of ENGINE structures.
3989 - Constified various get/set functions as appropriate and added
3990 missing functions (including a catch-all ENGINE_cpy that duplicates
3991 all ENGINE values onto a new ENGINE except reference counts/state).
3992 - Removed NULL parameter checks in get/set functions. Setting a method
3993 or function to NULL is a way of cancelling out a previously set
3994 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3995 and doesn't justify the extra error symbols and code.
3996 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3997 flags from engine_int.h to engine.h.
3998 - Changed prototypes for ENGINE handler functions (init(), finish(),
3999 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4002 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4003 to the algorithm using long division. The binary algorithm can be
4004 used only if the modulus is odd. On 32-bit systems, it is faster
4005 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4006 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4007 up to 450 bits. In 64-bit environments, the binary algorithm
4008 appears to be advantageous for much longer moduli; here we use it
4009 for moduli up to 2048 bits.
4012 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4013 could not support the combine flag in choice fields.
4016 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4017 extensions from a certificate request to the certificate.
4020 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4021 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4022 file: this allows the display of the certificate about to be
4023 signed to be customised, to allow certain fields to be included
4024 or excluded and extension details. The old system didn't display
4025 multicharacter strings properly, omitted fields not in the policy
4026 and couldn't display additional details such as extensions.
4029 *) Function EC_POINTs_mul for multiple scalar multiplication
4030 of an arbitrary number of elliptic curve points
4031 \sum scalars[i]*points[i],
4032 optionally including the generator defined for the EC_GROUP:
4033 scalar*generator + \sum scalars[i]*points[i].
4035 EC_POINT_mul is a simple wrapper function for the typical case
4036 that the point list has just one item (besides the optional
4040 *) First EC_METHODs for curves over GF(p):
4042 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4043 operations and provides various method functions that can also
4044 operate with faster implementations of modular arithmetic.
4046 EC_GFp_mont_method() reuses most functions that are part of
4047 EC_GFp_simple_method, but uses Montgomery arithmetic.
4049 [Bodo Moeller; point addition and point doubling
4050 implementation directly derived from source code provided by
4051 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4053 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4054 crypto/ec/ec_lib.c):
4056 Curves are EC_GROUP objects (with an optional group generator)
4057 based on EC_METHODs that are built into the library.
4059 Points are EC_POINT objects based on EC_GROUP objects.
4061 Most of the framework would be able to handle curves over arbitrary
4062 finite fields, but as there are no obvious types for fields other
4063 than GF(p), some functions are limited to that for now.
4066 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4067 that the file contains a complete HTTP response.
4070 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4071 change the def and num file printf format specifier from "%-40sXXX"
4072 to "%-39s XXX". The latter will always guarantee a space after the
4073 field while the former will cause them to run together if the field
4074 is 40 of more characters long.
4077 *) Constify the cipher and digest 'method' functions and structures
4078 and modify related functions to take constant EVP_MD and EVP_CIPHER
4082 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4083 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4086 *) Modify EVP_Digest*() routines so they now return values. Although the
4087 internal software routines can never fail additional hardware versions
4091 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
4093 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
4094 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
4097 ERR_R_NESTED_ASN1_ERROR
4099 ERR_R_MISSING_ASN1_EOS
4100 were 4 .. 9, conflicting with
4101 ERR_LIB_RSA (= ERR_R_RSA_LIB)
4103 ERR_LIB_PEM (= ERR_R_PEM_LIB).
4104 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
4106 Add new error code 'ERR_R_INTERNAL_ERROR'.
4109 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
4113 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
4114 sets the subject name for a new request or supersedes the
4115 subject name in a given request. Formats that can be parsed are
4116 'CN=Some Name, OU=myOU, C=IT'
4118 'CN=Some Name/OU=myOU/C=IT'.
4120 Add options '-batch' and '-verbose' to 'openssl req'.
4121 [Massimiliano Pala <madwolf@hackmasters.net>]
4123 *) Introduce the possibility to access global variables through
4124 functions on platform were that's the best way to handle exporting
4125 global variables in shared libraries. To enable this functionality,
4126 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
4127 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
4128 is normally done by Configure or something similar).
4130 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
4131 in the source file (foo.c) like this:
4133 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
4134 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
4136 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
4137 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
4139 OPENSSL_DECLARE_GLOBAL(int,foo);
4140 #define foo OPENSSL_GLOBAL_REF(foo)
4141 OPENSSL_DECLARE_GLOBAL(double,bar);
4142 #define bar OPENSSL_GLOBAL_REF(bar)
4144 The #defines are very important, and therefore so is including the
4145 header file everywhere where the defined globals are used.
4147 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
4148 of ASN.1 items, but that structure is a bit different.
4150 The largest change is in util/mkdef.pl which has been enhanced with
4151 better and easier to understand logic to choose which symbols should
4152 go into the Windows .def files as well as a number of fixes and code
4153 cleanup (among others, algorithm keywords are now sorted
4154 lexicographically to avoid constant rewrites).
4157 *) In BN_div() keep a copy of the sign of 'num' before writing the
4158 result to 'rm' because if rm==num the value will be overwritten
4159 and produce the wrong result if 'num' is negative: this caused
4160 problems with BN_mod() and BN_nnmod().
4163 *) Function OCSP_request_verify(). This checks the signature on an
4164 OCSP request and verifies the signer certificate. The signer
4165 certificate is just checked for a generic purpose and OCSP request
4169 *) Add OCSP_check_validity() function to check the validity of OCSP
4170 responses. OCSP responses are prepared in real time and may only
4171 be a few seconds old. Simply checking that the current time lies
4172 between thisUpdate and nextUpdate max reject otherwise valid responses
4173 caused by either OCSP responder or client clock inaccuracy. Instead
4174 we allow thisUpdate and nextUpdate to fall within a certain period of
4175 the current time. The age of the response can also optionally be
4176 checked. Two new options -validity_period and -status_age added to
4180 *) If signature or public key algorithm is unrecognized print out its
4181 OID rather that just UNKNOWN.
4184 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
4185 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
4186 ID to be generated from the issuer certificate alone which can then be
4187 passed to OCSP_id_issuer_cmp().
4190 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
4191 ASN1 modules to export functions returning ASN1_ITEM pointers
4192 instead of the ASN1_ITEM structures themselves. This adds several
4193 new macros which allow the underlying ASN1 function/structure to
4194 be accessed transparently. As a result code should not use ASN1_ITEM
4195 references directly (such as &X509_it) but instead use the relevant
4196 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
4197 use of the new ASN1 code on platforms where exporting structures
4198 is problematical (for example in shared libraries) but exporting
4199 functions returning pointers to structures is not.
4202 *) Add support for overriding the generation of SSL/TLS session IDs.
4203 These callbacks can be registered either in an SSL_CTX or per SSL.
4204 The purpose of this is to allow applications to control, if they wish,
4205 the arbitrary values chosen for use as session IDs, particularly as it
4206 can be useful for session caching in multiple-server environments. A
4207 command-line switch for testing this (and any client code that wishes
4208 to use such a feature) has been added to "s_server".
4209 [Geoff Thorpe, Lutz Jaenicke]
4211 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
4212 of the form '#if defined(...) || defined(...) || ...' and
4213 '#if !defined(...) && !defined(...) && ...'. This also avoids
4214 the growing number of special cases it was previously handling.
4217 *) Make all configuration macros available for application by making
4218 sure they are available in opensslconf.h, by giving them names starting
4219 with "OPENSSL_" to avoid conflicts with other packages and by making
4220 sure e_os2.h will cover all platform-specific cases together with
4222 Additionally, it is now possible to define configuration/platform-
4223 specific names (called "system identities"). In the C code, these
4224 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
4225 macro with the name beginning with "OPENSSL_SYS_", which is determined
4226 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on