5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Modify fipscanisteronly build option to only build the necessary object
8 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
11 *) Add experimental option FIPSSYMS to give all symbols in
12 fipscanister.o and FIPS or fips prefix. This will avoid
13 conflicts with future versions of OpenSSL. Add perl script
14 util/fipsas.pl to preprocess assembly language source files
15 and rename any affected symbols.
18 *) Add selftest checks and algorithm block of non-fips algorithms in
19 FIPS mode. Remove DES2 from selftests.
22 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
23 return internal method without any ENGINE dependencies. Add new
24 tiny fips sign and verify functions.
27 *) New build option no-ec2m to disable characteristic 2 code.
30 *) New build option "fipscanisteronly". This only builds fipscanister.o
31 and (currently) associated fips utilities. Uses the file Makefile.fips
32 instead of Makefile.org as the prototype.
35 *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
36 Update fips_gcmtest to use IV generator.
39 *) Initial, experimental EVP support for AES-GCM. AAD can be input by
40 setting output buffer to NULL. The *Final function must be
41 called although it will not retrieve any additional data. The tag
42 can be set or retrieved with a ctrl. The IV length is by default 12
43 bytes (96 bits) but can be set to an alternative value. If the IV
44 length exceeds the maximum IV length (currently 16 bytes) it cannot be
48 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
49 underlying do_cipher function handles all cipher semantics itself
50 including padding and finalisation. This is useful if (for example)
51 an ENGINE cipher handles block padding itself. The behaviour of
52 do_cipher is subtly changed if this flag is set: the return value
53 is the number of characters written to the output buffer (zero is
54 no longer an error code) or a negative error code. Also if the
55 input buffer is NULL and length 0 finalisation should be performed.
58 *) If a candidate issuer certificate is already part of the constructed
59 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
62 *) Improve forward-security support: add functions
64 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
65 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
67 for use by SSL/TLS servers; the callback function will be called whenever a
68 new session is created, and gets to decide whether the session may be
69 cached to make it resumable (return 0) or not (return 1). (As by the
70 SSL/TLS protocol specifications, the session_id sent by the server will be
71 empty to indicate that the session is not resumable; also, the server will
72 not generate RFC 4507 (RFC 5077) session tickets.)
74 A simple reasonable callback implementation is to return is_forward_secure.
75 This parameter will be set to 1 or 0 depending on the ciphersuite selected
76 by the SSL/TLS server library, indicating whether it can provide forward
78 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
80 *) Add Next Protocol Negotiation,
81 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
82 disabled with a no-npn flag to config or Configure. Code donated
84 [Adam Langley <agl@google.com> and Ben Laurie]
86 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
87 all platforms. Move ssize_t definition from e_os.h to the public
88 header file e_os2.h as it now appears in public header file cms.h
91 *) New function OPENSSL_gmtime_diff to find the difference in days
92 and seconds between two tm structures. This will be used to provide
93 additional functionality for ASN1_TIME.
96 *) New -sigopt option to the ca, req and x509 utilities. Additional
97 signature parameters can be passed using this option and in
101 *) Add RSA PSS signing function. This will generate and set the
102 appropriate AlgorithmIdentifiers for PSS based on those in the
103 corresponding EVP_MD_CTX structure. No application support yet.
106 *) Support for companion algorithm specific ASN1 signing routines.
107 New function ASN1_item_sign_ctx() signs a pre-initialised
108 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
109 the appropriate parameters.
112 *) Add new algorithm specific ASN1 verification initialisation function
113 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
114 handling will be the same no matter what EVP_PKEY_METHOD is used.
115 Add a PSS handler to support verification of PSS signatures: checked
116 against a number of sample certificates.
119 *) Add signature printing for PSS. Add PSS OIDs.
120 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
122 *) Add algorithm specific signature printing. An individual ASN1 method
123 can now print out signatures instead of the standard hex dump.
125 More complex signatures (e.g. PSS) can print out more meaningful
126 information. Include DSA version that prints out the signature
130 *) Add -trusted_first option which attempts to find certificates in the
131 trusted store even if an untrusted chain is also supplied.
134 *) Initial experimental support for explicitly trusted non-root CAs.
135 OpenSSL still tries to build a complete chain to a root but if an
136 intermediate CA has a trust setting included that is used. The first
137 setting is used: whether to trust or reject.
140 *) New -verify_name option in command line utilities to set verification
144 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
145 Add CMAC pkey methods.
148 *) Experiemental regnegotiation in s_server -www mode. If the client
149 browses /reneg connection is renegotiated. If /renegcert it is
150 renegotiated requesting a certificate.
153 *) Add an "external" session cache for debugging purposes to s_server. This
154 should help trace issues which normally are only apparent in deployed
155 multi-process servers.
158 *) Experiemental password based recipient info support for CMS library:
159 implementing RFC3211.
162 *) Split password based encryption into PBES2 and PBKDF2 functions. This
163 neatly separates the code into cipher and PBE sections and is required
164 for some algorithms that split PBES2 into separate pieces (such as
168 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
169 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
170 BIO_set_cipher() and some obscure PEM functions were changed so they
171 can now return an error. The RAND changes required a change to the
172 RAND_METHOD structure.
175 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
176 a gcc attribute to warn if the result of a function is ignored. This
177 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
178 whose return value is often ignored.
181 Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
183 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
186 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
187 elliptic curve NIST-P224 with constant-time single point multiplication on
188 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
189 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
190 flexible implementations).
192 The implementation requires support for the nonstandard type __uint128_t,
193 and so is disabled by default. To include this in your build of OpenSSL,
194 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
195 and run "make depend" (or "make update").
196 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
198 *) Permit abbreviated handshakes when renegotiating using the function
199 SSL_renegotiate_abbreviated().
200 [Robin Seggelmann <seggelmann@fh-muenster.de>]
202 *) Add call to ENGINE_register_all_complete() to
203 ENGINE_load_builtin_engines(), so some implementations get used
204 automatically instead of needing explicit application support.
207 *) Add support for TLS key exporter as described in RFC5705.
208 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
210 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
211 a few changes are required:
213 Add SSL_OP_NO_TLSv1_1 flag.
215 Update version checking logic to handle version 1.1.
216 Add explicit IV handling (ported from DTLS code).
217 Add command line options to s_client/s_server.
220 Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
222 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
223 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
225 *) Fix bug in string printing code: if *any* escaping is enabled we must
226 escape the escape character (backslash) or the resulting string is
230 Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
232 *) Disable code workaround for ancient and obsolete Netscape browsers
233 and servers: an attacker can use it in a ciphersuite downgrade attack.
234 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
237 *) Fixed J-PAKE implementation error, originally discovered by
238 Sebastien Martini, further info and confirmation from Stefan
239 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
242 Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
244 *) Fix extension code to avoid race conditions which can result in a buffer
245 overrun vulnerability: resumed sessions must not be modified as they can
246 be shared by multiple threads. CVE-2010-3864
249 *) Fix WIN32 build system to correctly link an ENGINE directory into
253 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
255 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
257 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
259 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
261 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
262 context. The operation can be customised via the ctrl mechanism in
263 case ENGINEs want to include additional functionality.
266 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
269 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
270 output hashes compatible with older versions of OpenSSL.
271 [Willy Weisz <weisz@vcpc.univie.ac.at>]
273 *) Fix compression algorithm handling: if resuming a session use the
274 compression algorithm of the resumed session instead of determining
275 it from client hello again. Don't allow server to change algorithm.
278 *) Add load_crls() function to apps tidying load_certs() too. Add option
279 to verify utility to allow additional CRLs to be included.
282 *) Update OCSP request code to permit adding custom headers to the request:
283 some responders need this.
286 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
288 [Julia Lawall <julia@diku.dk>]
290 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
291 needlessly dereferenced structures, used obsolete functions and
292 didn't handle all updated verify codes correctly.
295 *) Disable MD2 in the default configuration.
298 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
299 indicate the initial BIO being pushed or popped. This makes it possible
300 to determine whether the BIO is the one explicitly called or as a result
301 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
302 it handles reference counts correctly and doesn't zero out the I/O bio
303 when it is not being explicitly popped. WARNING: applications which
304 included workarounds for the old buggy behaviour will need to be modified
305 or they could free up already freed BIOs.
308 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
309 renaming to all platforms (within the 0.9.8 branch, this was
310 done conditionally on Netware platforms to avoid a name clash).
311 [Guenter <lists@gknw.net>]
313 *) Add ECDHE and PSK support to DTLS.
314 [Michael Tuexen <tuexen@fh-muenster.de>]
316 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
320 *) Add "missing" function EVP_MD_flags() (without this the only way to
321 retrieve a digest flags is by accessing the structure directly. Update
322 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
323 or cipher is registered as in the "from" argument. Print out all
324 registered digests in the dgst usage message instead of manually
325 attempting to work them out.
328 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
329 this allows the use of compression and extensions. Change default cipher
330 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
331 by default unless an application cipher string requests it.
334 *) Alter match criteria in PKCS12_parse(). It used to try to use local
335 key ids to find matching certificates and keys but some PKCS#12 files
336 don't follow the (somewhat unwritten) rules and this strategy fails.
337 Now just gather all certificates together and the first private key
338 then look for the first certificate that matches the key.
341 *) Support use of registered digest and cipher names for dgst and cipher
342 commands instead of having to add each one as a special case. So now
349 openssl dgst -sha256 foo
351 and this works for ENGINE based algorithms too.
355 *) Update Gost ENGINE to support parameter files.
356 [Victor B. Wagner <vitus@cryptocom.ru>]
358 *) Support GeneralizedTime in ca utility.
359 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
361 *) Enhance the hash format used for certificate directory links. The new
362 form uses the canonical encoding (meaning equivalent names will work
363 even if they aren't identical) and uses SHA1 instead of MD5. This form
364 is incompatible with the older format and as a result c_rehash should
365 be used to rebuild symbolic links.
368 *) Make PKCS#8 the default write format for private keys, replacing the
369 traditional format. This form is standardised, more secure and doesn't
370 include an implicit MD5 dependency.
373 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
374 committed to OpenSSL should pass this lot as a minimum.
377 *) Add session ticket override functionality for use by EAP-FAST.
378 [Jouni Malinen <j@w1.fi>]
380 *) Modify HMAC functions to return a value. Since these can be implemented
381 in an ENGINE errors can occur.
384 *) Type-checked OBJ_bsearch_ex.
387 *) Type-checked OBJ_bsearch. Also some constification necessitated
388 by type-checking. Still to come: TXT_DB, bsearch(?),
389 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
393 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
394 seconds to a tm structure directly, instead of going through OS
395 specific date routines. This avoids any issues with OS routines such
396 as the year 2038 bug. New *_adj() functions for ASN1 time structures
397 and X509_time_adj_ex() to cover the extended range. The existing
398 X509_time_adj() is still usable and will no longer have any date issues.
401 *) Delta CRL support. New use deltas option which will attempt to locate
402 and search any appropriate delta CRLs available.
404 This work was sponsored by Google.
407 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
408 code and add additional score elements. Validate alternate CRL paths
409 as part of the CRL checking and indicate a new error "CRL path validation
410 error" in this case. Applications wanting additional details can use
411 the verify callback and check the new "parent" field. If this is not
412 NULL CRL path validation is taking place. Existing applications wont
413 see this because it requires extended CRL support which is off by
416 This work was sponsored by Google.
419 *) Support for freshest CRL extension.
421 This work was sponsored by Google.
424 *) Initial indirect CRL support. Currently only supported in the CRLs
425 passed directly and not via lookup. Process certificate issuer
426 CRL entry extension and lookup CRL entries by bother issuer name
427 and serial number. Check and process CRL issuer entry in IDP extension.
429 This work was sponsored by Google.
432 *) Add support for distinct certificate and CRL paths. The CRL issuer
433 certificate is validated separately in this case. Only enabled if
434 an extended CRL support flag is set: this flag will enable additional
435 CRL functionality in future.
437 This work was sponsored by Google.
440 *) Add support for policy mappings extension.
442 This work was sponsored by Google.
445 *) Fixes to pathlength constraint, self issued certificate handling,
446 policy processing to align with RFC3280 and PKITS tests.
448 This work was sponsored by Google.
451 *) Support for name constraints certificate extension. DN, email, DNS
452 and URI types are currently supported.
454 This work was sponsored by Google.
457 *) To cater for systems that provide a pointer-based thread ID rather
458 than numeric, deprecate the current numeric thread ID mechanism and
459 replace it with a structure and associated callback type. This
460 mechanism allows a numeric "hash" to be extracted from a thread ID in
461 either case, and on platforms where pointers are larger than 'long',
462 mixing is done to help ensure the numeric 'hash' is usable even if it
463 can't be guaranteed unique. The default mechanism is to use "&errno"
464 as a pointer-based thread ID to distinguish between threads.
466 Applications that want to provide their own thread IDs should now use
467 CRYPTO_THREADID_set_callback() to register a callback that will call
468 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
470 Note that ERR_remove_state() is now deprecated, because it is tied
471 to the assumption that thread IDs are numeric. ERR_remove_state(0)
472 to free the current thread's error state should be replaced by
473 ERR_remove_thread_state(NULL).
475 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
476 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
477 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
478 application was previously providing a numeric thread callback that
479 was inappropriate for distinguishing threads, then uniqueness might
480 have been obtained with &errno that happened immediately in the
481 intermediate development versions of OpenSSL; this is no longer the
482 case, the numeric thread callback will now override the automatic use
484 [Geoff Thorpe, with help from Bodo Moeller]
486 *) Initial support for different CRL issuing certificates. This covers a
487 simple case where the self issued certificates in the chain exist and
488 the real CRL issuer is higher in the existing chain.
490 This work was sponsored by Google.
493 *) Removed effectively defunct crypto/store from the build.
496 *) Revamp of STACK to provide stronger type-checking. Still to come:
497 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
498 ASN1_STRING, CONF_VALUE.
501 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
502 RAM on SSL connections. This option can save about 34k per idle SSL.
505 *) Revamp of LHASH to provide stronger type-checking. Still to come:
506 STACK, TXT_DB, bsearch, qsort.
509 *) Initial support for Cryptographic Message Syntax (aka CMS) based
510 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
511 support for data, signedData, compressedData, digestedData and
512 encryptedData, envelopedData types included. Scripts to check against
513 RFC4134 examples draft and interop and consistency checks of many
514 content types and variants.
517 *) Add options to enc utility to support use of zlib compression BIO.
520 *) Extend mk1mf to support importing of options and assembly language
521 files from Configure script, currently only included in VC-WIN32.
522 The assembly language rules can now optionally generate the source
523 files from the associated perl scripts.
526 *) Implement remaining functionality needed to support GOST ciphersuites.
527 Interop testing has been performed using CryptoPro implementations.
528 [Victor B. Wagner <vitus@cryptocom.ru>]
530 *) s390x assembler pack.
533 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
537 *) Implement Opaque PRF Input TLS extension as specified in
538 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
539 official specification yet and no extension type assignment by
540 IANA exists, this extension (for now) will have to be explicitly
541 enabled when building OpenSSL by providing the extension number
542 to use. For example, specify an option
544 -DTLSEXT_TYPE_opaque_prf_input=0x9527
546 to the "config" or "Configure" script to enable the extension,
547 assuming extension number 0x9527 (which is a completely arbitrary
548 and unofficial assignment based on the MD5 hash of the Internet
549 Draft). Note that by doing so, you potentially lose
550 interoperability with other TLS implementations since these might
551 be using the same extension number for other purposes.
553 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
554 opaque PRF input value to use in the handshake. This will create
555 an interal copy of the length-'len' string at 'src', and will
556 return non-zero for success.
558 To get more control and flexibility, provide a callback function
561 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
562 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
566 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
569 Callback function 'cb' will be called in handshakes, and is
570 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
571 Argument 'arg' is for application purposes (the value as given to
572 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
573 be provided to the callback function). The callback function
574 has to return non-zero to report success: usually 1 to use opaque
575 PRF input just if possible, or 2 to enforce use of the opaque PRF
576 input. In the latter case, the library will abort the handshake
577 if opaque PRF input is not successfully negotiated.
579 Arguments 'peerinput' and 'len' given to the callback function
580 will always be NULL and 0 in the case of a client. A server will
581 see the client's opaque PRF input through these variables if
582 available (NULL and 0 otherwise). Note that if the server
583 provides an opaque PRF input, the length must be the same as the
584 length of the client's opaque PRF input.
586 Note that the callback function will only be called when creating
587 a new session (session resumption can resume whatever was
588 previously negotiated), and will not be called in SSL 2.0
589 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
590 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
591 for applications that need to enforce opaque PRF input.
595 *) Update ssl code to support digests other than SHA1+MD5 for handshake
598 [Victor B. Wagner <vitus@cryptocom.ru>]
600 *) Add RFC4507 support to OpenSSL. This includes the corrections in
601 RFC4507bis. The encrypted ticket format is an encrypted encoded
602 SSL_SESSION structure, that way new session features are automatically
605 If a client application caches session in an SSL_SESSION structure
606 support is transparent because tickets are now stored in the encoded
609 The SSL_CTX structure automatically generates keys for ticket
610 protection in servers so again support should be possible
611 with no application modification.
613 If a client or server wishes to disable RFC4507 support then the option
614 SSL_OP_NO_TICKET can be set.
616 Add a TLS extension debugging callback to allow the contents of any client
617 or server extensions to be examined.
619 This work was sponsored by Google.
622 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
623 OpenSSL should now compile cleanly on gcc 4.2
624 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
626 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
627 support including streaming MAC support: this is required for GOST
629 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
631 *) Add option -stream to use PKCS#7 streaming in smime utility. New
632 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
633 to output in BER and PEM format.
636 *) Experimental support for use of HMAC via EVP_PKEY interface. This
637 allows HMAC to be handled via the EVP_DigestSign*() interface. The
638 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
639 ENGINE support for HMAC keys which are unextractable. New -mac and
640 -macopt options to dgst utility.
643 *) New option -sigopt to dgst utility. Update dgst to use
644 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
645 alternative signing paramaters such as X9.31 or PSS in the dgst
649 *) Change ssl_cipher_apply_rule(), the internal function that does
650 the work each time a ciphersuite string requests enabling
651 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
652 removing ("!foo+bar") a class of ciphersuites: Now it maintains
653 the order of disabled ciphersuites such that those ciphersuites
654 that most recently went from enabled to disabled not only stay
655 in order with respect to each other, but also have higher priority
656 than other disabled ciphersuites the next time ciphersuites are
659 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
660 the same ciphersuites as with "HIGH" alone, but in a specific
661 order where the PSK ciphersuites come first (since they are the
662 most recently disabled ciphersuites when "HIGH" is parsed).
664 Also, change ssl_create_cipher_list() (using this new
665 funcionality) such that between otherwise identical
666 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
670 *) Change ssl_create_cipher_list() so that it automatically
671 arranges the ciphersuites in reasonable order before starting
672 to process the rule string. Thus, the definition for "DEFAULT"
673 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
674 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
675 This makes it much easier to arrive at a reasonable default order
676 in applications for which anonymous ciphers are OK (meaning
677 that you can't actually use DEFAULT).
678 [Bodo Moeller; suggested by Victor Duchovni]
680 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
681 processing) into multiple integers instead of setting
682 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
683 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
684 (These masks as well as the individual bit definitions are hidden
685 away into the non-exported interface ssl/ssl_locl.h, so this
686 change to the definition of the SSL_CIPHER structure shouldn't
687 affect applications.) This give us more bits for each of these
688 categories, so there is no longer a need to coagulate AES128 and
689 AES256 into a single algorithm bit, and to coagulate Camellia128
690 and Camellia256 into a single algorithm bit, which has led to all
693 Thus, among other things, the kludge introduced in 0.9.7m and
694 0.9.8e for masking out AES256 independently of AES128 or masking
695 out Camellia256 independently of AES256 is not needed here in 0.9.9.
697 With the change, we also introduce new ciphersuite aliases that
698 so far were missing: "AES128", "AES256", "CAMELLIA128", and
702 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
703 Use the leftmost N bytes of the signature input if the input is
704 larger than the prime q (with N being the size in bytes of q).
707 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
708 it yet and it is largely untested.
711 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
714 *) Initial incomplete changes to avoid need for function casts in OpenSSL
715 some compilers (gcc 4.2 and later) reject their use. Safestack is
716 reimplemented. Update ASN1 to avoid use of legacy functions.
719 *) Win32/64 targets are linked with Winsock2.
722 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
723 to external functions. This can be used to increase CRL handling
724 efficiency especially when CRLs are very large by (for example) storing
725 the CRL revoked certificates in a database.
728 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
729 new CRLs added to a directory can be used. New command line option
730 -verify_return_error to s_client and s_server. This causes real errors
731 to be returned by the verify callback instead of carrying on no matter
732 what. This reflects the way a "real world" verify callback would behave.
735 *) GOST engine, supporting several GOST algorithms and public key formats.
736 Kindly donated by Cryptocom.
739 *) Partial support for Issuing Distribution Point CRL extension. CRLs
740 partitioned by DP are handled but no indirect CRL or reason partitioning
741 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
742 selected via a scoring technique which handles IDP and AKID in CRLs.
745 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
746 will ultimately be used for all verify operations: this will remove the
747 X509_STORE dependency on certificate verification and allow alternative
748 lookup methods. X509_STORE based implementations of these two callbacks.
751 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
752 Modify get_crl() to find a valid (unexpired) CRL if possible.
755 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
756 this would be called X509_CRL_cmp() but that name is already used by
757 a function that just compares CRL issuer names. Cache several CRL
758 extensions in X509_CRL structure and cache CRLDP in X509.
761 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
762 this maps equivalent X509_NAME structures into a consistent structure.
763 Name comparison can then be performed rapidly using memcmp().
766 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
770 *) Allow digests to supply their own micalg string for S/MIME type using
771 the ctrl EVP_MD_CTRL_MICALG.
774 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
775 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
776 ctrl. It can then customise the structure before and/or after signing
780 *) New function OBJ_add_sigid() to allow application defined signature OIDs
781 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
782 to free up any added signature OIDs.
785 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
786 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
787 digest and cipher tables. New options added to openssl utility:
788 list-message-digest-algorithms and list-cipher-algorithms.
791 *) Change the array representation of binary polynomials: the list
792 of degrees of non-zero coefficients is now terminated with -1.
793 Previously it was terminated with 0, which was also part of the
794 value; thus, the array representation was not applicable to
795 polynomials where t^0 has coefficient zero. This change makes
796 the array representation useful in a more general context.
799 *) Various modifications and fixes to SSL/TLS cipher string
800 handling. For ECC, the code now distinguishes between fixed ECDH
801 with RSA certificates on the one hand and with ECDSA certificates
802 on the other hand, since these are separate ciphersuites. The
803 unused code for Fortezza ciphersuites has been removed.
805 For consistency with EDH, ephemeral ECDH is now called "EECDH"
806 (not "ECDHE"). For consistency with the code for DH
807 certificates, use of ECDH certificates is now considered ECDH
808 authentication, not RSA or ECDSA authentication (the latter is
809 merely the CA's signing algorithm and not actively used in the
812 The temporary ciphersuite alias "ECCdraft" is no longer
813 available, and ECC ciphersuites are no longer excluded from "ALL"
814 and "DEFAULT". The following aliases now exist for RFC 4492
815 ciphersuites, most of these by analogy with the DH case:
817 kECDHr - ECDH cert, signed with RSA
818 kECDHe - ECDH cert, signed with ECDSA
819 kECDH - ECDH cert (signed with either RSA or ECDSA)
820 kEECDH - ephemeral ECDH
821 ECDH - ECDH cert or ephemeral ECDH
827 AECDH - anonymous ECDH
828 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
832 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
833 Use correct micalg parameters depending on digest(s) in signed message.
836 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
837 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
840 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
841 an engine to register a method. Add ENGINE lookups for methods and
842 functional reference processing.
845 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
846 EVP_{Sign,Verify}* which allow an application to customise the signature
850 *) New -resign option to smime utility. This adds one or more signers
851 to an existing PKCS#7 signedData structure. Also -md option to use an
852 alternative message digest algorithm for signing.
855 *) Tidy up PKCS#7 routines and add new functions to make it easier to
856 create PKCS7 structures containing multiple signers. Update smime
857 application to support multiple signers.
860 *) New -macalg option to pkcs12 utility to allow setting of an alternative
864 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
865 Reorganize PBE internals to lookup from a static table using NIDs,
866 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
867 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
868 PRF which will be automatically used with PBES2.
871 *) Replace the algorithm specific calls to generate keys in "req" with the
875 *) Update PKCS#7 enveloped data routines to use new API. This is now
876 supported by any public key method supporting the encrypt operation. A
877 ctrl is added to allow the public key algorithm to examine or modify
878 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
882 *) Add a ctrl to asn1 method to allow a public key algorithm to express
883 a default digest type to use. In most cases this will be SHA1 but some
884 algorithms (such as GOST) need to specify an alternative digest. The
885 return value indicates how strong the prefernce is 1 means optional and
886 2 is mandatory (that is it is the only supported type). Modify
887 ASN1_item_sign() to accept a NULL digest argument to indicate it should
888 use the default md. Update openssl utilities to use the default digest
889 type for signing if it is not explicitly indicated.
892 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
893 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
894 signing method from the key type. This effectively removes the link
895 between digests and public key types.
898 *) Add an OID cross reference table and utility functions. Its purpose is to
899 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
900 rsaEncryption. This will allow some of the algorithm specific hackery
901 needed to use the correct OID to be removed.
904 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
905 structures for PKCS7_sign(). They are now set up by the relevant public
909 *) Add provisional EC pkey method with support for ECDSA and ECDH.
912 *) Add support for key derivation (agreement) in the API, DH method and
916 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
917 public and private key formats. As a side effect these add additional
918 command line functionality not previously available: DSA signatures can be
919 generated and verified using pkeyutl and DH key support and generation in
924 [Oliver Tappe <zooey@hirschkaefer.de>]
926 *) New make target "install_html_docs" installs HTML renditions of the
928 [Oliver Tappe <zooey@hirschkaefer.de>]
930 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
931 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
932 support key and parameter generation and add initial key generation
933 functionality for RSA.
936 *) Add functions for main EVP_PKEY_method operations. The undocumented
937 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
938 EVP_PKEY_{encrypt,decrypt}_old.
941 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
942 key API, doesn't do much yet.
945 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
946 public key algorithms. New option to openssl utility:
947 "list-public-key-algorithms" to print out info.
950 *) Implement the Supported Elliptic Curves Extension for
951 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
954 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
955 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
958 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
959 utilities such as rsa, dsa, dsaparam etc except they process any key
963 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
964 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
965 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
969 *) Initial support for pluggable public key ASN1.
970 De-spaghettify the public key ASN1 handling. Move public and private
971 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
972 algorithm specific handling to a single module within the relevant
973 algorithm directory. Add functions to allow (near) opaque processing
974 of public and private key structures.
977 *) Implement the Supported Point Formats Extension for
978 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
981 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
982 for the psk identity [hint] and the psk callback functions to the
983 SSL_SESSION, SSL and SSL_CTX structure.
986 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
990 SSL_CTX_use_psk_identity_hint
991 SSL_get_psk_identity_hint
993 SSL_use_psk_identity_hint
995 [Mika Kousa and Pasi Eronen of Nokia Corporation]
997 *) Add RFC 3161 compliant time stamp request creation, response generation
998 and response verification functionality.
999 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
1001 *) Add initial support for TLS extensions, specifically for the server_name
1002 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1003 have new members for a host name. The SSL data structure has an
1004 additional member SSL_CTX *initial_ctx so that new sessions can be
1005 stored in that context to allow for session resumption, even after the
1006 SSL has been switched to a new SSL_CTX in reaction to a client's
1007 server_name extension.
1009 New functions (subject to change):
1011 SSL_get_servername()
1012 SSL_get_servername_type()
1015 New CTRL codes and macros (subject to change):
1017 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1018 - SSL_CTX_set_tlsext_servername_callback()
1019 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1020 - SSL_CTX_set_tlsext_servername_arg()
1021 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1023 openssl s_client has a new '-servername ...' option.
1025 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1026 '-key2 ...', '-servername_fatal' (subject to change). This allows
1027 testing the HostName extension for a specific single host name ('-cert'
1028 and '-key' remain fallbacks for handshakes without HostName
1029 negotiation). If the unrecogninzed_name alert has to be sent, this by
1030 default is a warning; it becomes fatal with the '-servername_fatal'
1033 [Peter Sylvester, Remy Allais, Christophe Renou]
1035 *) Whirlpool hash implementation is added.
1038 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
1039 bn(64,32). Because of instruction set limitations it doesn't have
1040 any negative impact on performance. This was done mostly in order
1041 to make it possible to share assembler modules, such as bn_mul_mont
1042 implementations, between 32- and 64-bit builds without hassle.
1045 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
1046 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
1050 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
1051 dedicated Montgomery multiplication procedure, is introduced.
1052 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
1053 "64-bit" performance on certain 32-bit targets.
1056 *) New option SSL_OP_NO_COMP to disable use of compression selectively
1057 in SSL structures. New SSL ctrl to set maximum send fragment size.
1058 Save memory by seeting the I/O buffer sizes dynamically instead of
1059 using the maximum available value.
1062 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
1063 in addition to the text details.
1066 *) Very, very preliminary EXPERIMENTAL support for printing of general
1067 ASN1 structures. This currently produces rather ugly output and doesn't
1068 handle several customised structures at all.
1071 *) Integrated support for PVK file format and some related formats such
1072 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
1073 these in the 'rsa' and 'dsa' utilities.
1076 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
1079 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
1080 place for the (very old) "NETSCAPE" format certificates which are now
1081 handled using new ASN1 code equivalents.
1084 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1085 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1086 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1089 *) Modify CRL distribution points extension code to print out previously
1090 unsupported fields. Enhance extension setting code to allow setting of
1094 *) Add print and set support for Issuing Distribution Point CRL extension.
1097 *) Change 'Configure' script to enable Camellia by default.
1100 Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
1102 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
1103 [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
1105 *) Fix bug in string printing code: if *any* escaping is enabled we must
1106 escape the escape character (backslash) or the resulting string is
1110 Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
1112 *) Disable code workaround for ancient and obsolete Netscape browsers
1113 and servers: an attacker can use it in a ciphersuite downgrade attack.
1114 Thanks to Martin Rex for discovering this bug. CVE-2010-4180
1117 *) Fixed J-PAKE implementation error, originally discovered by
1118 Sebastien Martini, further info and confirmation from Stefan
1119 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
1122 Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
1124 *) Fix extension code to avoid race conditions which can result in a buffer
1125 overrun vulnerability: resumed sessions must not be modified as they can
1126 be shared by multiple threads. CVE-2010-3864
1129 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
1132 *) Don't reencode certificate when calculating signature: cache and use
1133 the original encoding instead. This makes signature verification of
1134 some broken encodings work correctly.
1137 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1138 is also one of the inputs.
1139 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1141 *) Don't repeatedly append PBE algorithms to table if they already exist.
1142 Sort table on each new add. This effectively makes the table read only
1143 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1147 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1149 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1152 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1153 access or freeing data twice (CVE-2010-0742)
1154 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1156 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1157 common in certificates and some applications which only call
1158 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1162 Reduce copying into .apps and .test in makevms.com
1163 Don't try to use blank CA certificate in CA.com
1164 Allow use of C files from original directories in maketests.com
1165 [Steven M. Schweda" <sms@antinode.info>]
1167 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1169 *) When rejecting SSL/TLS records due to an incorrect version number, never
1170 update s->server with a new major version number. As of
1171 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1172 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1173 the previous behavior could result in a read attempt at NULL when
1174 receiving specific incorrect SSL/TLS records once record payload
1175 protection is active. (CVE-2010-0740)
1176 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1178 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1179 could be crashed if the relevant tables were not present (e.g. chrooted).
1180 [Tomas Hoger <thoger@redhat.com>]
1182 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1184 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1185 [Martin Olsson, Neel Mehta]
1187 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1188 accommodate for stack sorting, always a write lock!).
1191 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1192 excessive delays in the RAND_poll(): over a minute. As a workaround
1193 include a time check in the inner Heap32Next loop too.
1196 *) The code that handled flushing of data in SSL/TLS originally used the
1197 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1198 the problem outlined in PR#1949. The fix suggested there however can
1199 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1200 of Apache). So instead simplify the code to flush unconditionally.
1201 This should be fine since flushing with no data to flush is a no op.
1204 *) Handle TLS versions 2.0 and later properly and correctly use the
1205 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1206 off ancient servers have a habit of sticking around for a while...
1209 *) Modify compression code so it frees up structures without using the
1210 ex_data callbacks. This works around a problem where some applications
1211 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1212 restarting) then use compression (e.g. SSL with compression) later.
1213 This results in significant per-connection memory leaks and
1214 has caused some security issues including CVE-2008-1678 and
1218 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1219 change when encrypting or decrypting.
1222 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1223 connect and renegotiate with servers which do not support RI.
1224 Until RI is more widely deployed this option is enabled by default.
1227 *) Add "missing" ssl ctrls to clear options and mode.
1230 *) If client attempts to renegotiate and doesn't support RI respond with
1231 a no_renegotiation alert as required by RFC5746. Some renegotiating
1232 TLS clients will continue a connection gracefully when they receive
1233 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1234 waiting for a server hello which it will never receive. Now we treat a
1235 received no_renegotiation alert as a fatal error. This is because
1236 applications requesting a renegotiation might well expect it to succeed
1237 and would have no code in place to handle the server denying it so the
1238 only safe thing to do is to terminate the connection.
1241 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1242 peer supports secure renegotiation and 0 otherwise. Print out peer
1243 renegotiation support in s_client/s_server.
1246 *) Replace the highly broken and deprecated SPKAC certification method with
1247 the updated NID creation version. This should correctly handle UTF8.
1250 *) Implement RFC5746. Re-enable renegotiation but require the extension
1251 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1252 turns out to be a bad idea. It has been replaced by
1253 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1254 SSL_CTX_set_options(). This is really not recommended unless you
1255 know what you are doing.
1256 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1258 *) Fixes to stateless session resumption handling. Use initial_ctx when
1259 issuing and attempting to decrypt tickets in case it has changed during
1260 servername handling. Use a non-zero length session ID when attempting
1261 stateless session resumption: this makes it possible to determine if
1262 a resumption has occurred immediately after receiving server hello
1263 (several places in OpenSSL subtly assume this) instead of later in
1267 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1268 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1269 fixes for a few places where the return code is not checked
1271 [Julia Lawall <julia@diku.dk>]
1273 *) Add --strict-warnings option to Configure script to include devteam
1274 warnings in other configurations.
1277 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1278 makes it possible to install openssl libraries in locations which
1279 have names other than "lib", for example "/usr/lib64" which some
1281 [Steve Henson, based on patch from Jeremy Utley]
1283 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1284 X690 8.9.12 and can produce some misleading textual output of OIDs.
1285 [Steve Henson, reported by Dan Kaminsky]
1287 *) Delete MD2 from algorithm tables. This follows the recommendation in
1288 several standards that it is not used in new applications due to
1289 several cryptographic weaknesses. For binary compatibility reasons
1290 the MD2 API is still compiled in by default.
1293 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1297 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1298 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1300 [Guenter <lists@gknw.net>]
1302 *) Fix the server certificate chain building code to use X509_verify_cert(),
1303 it used to have an ad-hoc builder which was unable to cope with anything
1304 other than a simple chain.
1305 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1307 *) Don't check self signed certificate signatures in X509_verify_cert()
1308 by default (a flag can override this): it just wastes time without
1309 adding any security. As a useful side effect self signed root CAs
1310 with non-FIPS digests are now usable in FIPS mode.
1313 *) In dtls1_process_out_of_seq_message() the check if the current message
1314 is already buffered was missing. For every new message was memory
1315 allocated, allowing an attacker to perform an denial of service attack
1316 with sending out of seq handshake messages until there is no memory
1317 left. Additionally every future messege was buffered, even if the
1318 sequence number made no sense and would be part of another handshake.
1319 So only messages with sequence numbers less than 10 in advance will be
1320 buffered. (CVE-2009-1378)
1321 [Robin Seggelmann, discovered by Daniel Mentz]
1323 *) Records are buffered if they arrive with a future epoch to be
1324 processed after finishing the corresponding handshake. There is
1325 currently no limitation to this buffer allowing an attacker to perform
1326 a DOS attack with sending records with future epochs until there is no
1327 memory left. This patch adds the pqueue_size() function to detemine
1328 the size of a buffer and limits the record buffer to 100 entries.
1330 [Robin Seggelmann, discovered by Daniel Mentz]
1332 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1333 parent structure is freed. (CVE-2009-1379)
1336 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1337 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1340 [Ilya O. <vrghost@gmail.com>]
1342 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1344 *) Disable renegotiation completely - this fixes a severe security
1345 problem (CVE-2009-3555) at the cost of breaking all
1346 renegotiation. Renegotiation can be re-enabled by setting
1347 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1348 run-time. This is really not recommended unless you know what
1352 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1354 *) Don't set val to NULL when freeing up structures, it is freed up by
1355 underlying code. If sizeof(void *) > sizeof(long) this can result in
1356 zeroing past the valid field. (CVE-2009-0789)
1357 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1359 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1360 checked correctly. This would allow some invalid signed attributes to
1361 appear to verify correctly. (CVE-2009-0591)
1362 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1364 *) Reject UniversalString and BMPString types with invalid lengths. This
1365 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1366 a legal length. (CVE-2009-0590)
1369 *) Set S/MIME signing as the default purpose rather than setting it
1370 unconditionally. This allows applications to override it at the store
1374 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1375 to handle some structures.
1378 *) Improve efficiency of mem_gets: don't search whole buffer each time
1380 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1382 *) New -hex option for openssl rand.
1385 *) Print out UTF8String and NumericString when parsing ASN1.
1388 *) Support NumericString type for name components.
1391 *) Allow CC in the environment to override the automatically chosen
1392 compiler. Note that nothing is done to ensure flags work with the
1396 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1398 *) Properly check EVP_VerifyFinal() and similar return values
1400 [Ben Laurie, Bodo Moeller, Google Security Team]
1402 *) Enable TLS extensions by default.
1405 *) Allow the CHIL engine to be loaded, whether the application is
1406 multithreaded or not. (This does not release the developer from the
1407 obligation to set up the dynamic locking callbacks.)
1408 [Sander Temme <sander@temme.net>]
1410 *) Use correct exit code if there is an error in dgst command.
1411 [Steve Henson; problem pointed out by Roland Dirlewanger]
1413 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1414 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1417 *) Add experimental JPAKE support, including demo authentication in
1418 s_client and s_server.
1421 *) Set the comparison function in v3_addr_canonize().
1422 [Rob Austein <sra@hactrn.net>]
1424 *) Add support for XMPP STARTTLS in s_client.
1425 [Philip Paeps <philip@freebsd.org>]
1427 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1428 to ensure that even with this option, only ciphersuites in the
1429 server's preference list will be accepted. (Note that the option
1430 applies only when resuming a session, so the earlier behavior was
1431 just about the algorithm choice for symmetric cryptography.)
1434 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1436 *) Fix NULL pointer dereference if a DTLS server received
1437 ChangeCipherSpec as first record (CVE-2009-1386).
1440 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1441 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1444 *) The fix in 0.9.8c that supposedly got rid of unsafe
1445 double-checked locking was incomplete for RSA blinding,
1446 addressing just one layer of what turns out to have been
1447 doubly unsafe triple-checked locking.
1449 So now fix this for real by retiring the MONT_HELPER macro
1450 in crypto/rsa/rsa_eay.c.
1452 [Bodo Moeller; problem pointed out by Marius Schilder]
1454 *) Various precautionary measures:
1456 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1458 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1459 (NB: This would require knowledge of the secret session ticket key
1460 to exploit, in which case you'd be SOL either way.)
1462 - Change bn_nist.c so that it will properly handle input BIGNUMs
1463 outside the expected range.
1465 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1468 [Neel Mehta, Bodo Moeller]
1470 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1471 the load fails. Useful for distros.
1472 [Ben Laurie and the FreeBSD team]
1474 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1477 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1480 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1482 This work was sponsored by Logica.
1485 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1486 keystores. Support for SSL/TLS client authentication too.
1487 Not compiled unless enable-capieng specified to Configure.
1489 This work was sponsored by Logica.
1492 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1493 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1494 attribute creation routines such as certifcate requests and PKCS#12
1498 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1500 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1501 handshake which could lead to a cilent crash as found using the
1502 Codenomicon TLS test suite (CVE-2008-1672)
1503 [Steve Henson, Mark Cox]
1505 *) Fix double free in TLS server name extensions which could lead to
1506 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1509 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1511 Clear the error queue to ensure that error entries left from
1512 older function calls do not interfere with the correct operation.
1513 [Lutz Jaenicke, Erik de Castro Lopo]
1515 *) Remove root CA certificates of commercial CAs:
1517 The OpenSSL project does not recommend any specific CA and does not
1518 have any policy with respect to including or excluding any CA.
1519 Therefore it does not make any sense to ship an arbitrary selection
1520 of root CA certificates with the OpenSSL software.
1523 *) RSA OAEP patches to fix two separate invalid memory reads.
1524 The first one involves inputs when 'lzero' is greater than
1525 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1526 before the beginning of from). The second one involves inputs where
1527 the 'db' section contains nothing but zeroes (there is a one-byte
1528 invalid read after the end of 'db').
1529 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1531 *) Partial backport from 0.9.9-dev:
1533 Introduce bn_mul_mont (dedicated Montgomery multiplication
1534 procedure) as a candidate for BIGNUM assembler implementation.
1535 While 0.9.9-dev uses assembler for various architectures, only
1536 x86_64 is available by default here in the 0.9.8 branch, and
1537 32-bit x86 is available through a compile-time setting.
1539 To try the 32-bit x86 assembler implementation, use Configure
1540 option "enable-montasm" (which exists only for this backport).
1542 As "enable-montasm" for 32-bit x86 disclaims code stability
1543 anyway, in this constellation we activate additional code
1544 backported from 0.9.9-dev for further performance improvements,
1545 namely BN_from_montgomery_word. (To enable this otherwise,
1546 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1548 [Andy Polyakov (backport partially by Bodo Moeller)]
1550 *) Add TLS session ticket callback. This allows an application to set
1551 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1552 values. This is useful for key rollover for example where several key
1553 sets may exist with different names.
1556 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1557 This was broken until now in 0.9.8 releases, such that the only way
1558 a registered ENGINE could be used (assuming it initialises
1559 successfully on the host) was to explicitly set it as the default
1560 for the relevant algorithms. This is in contradiction with 0.9.7
1561 behaviour and the documentation. With this fix, when an ENGINE is
1562 registered into a given algorithm's table of implementations, the
1563 'uptodate' flag is reset so that auto-discovery will be used next
1564 time a new context for that algorithm attempts to select an
1566 [Ian Lister (tweaked by Geoff Thorpe)]
1568 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1569 implemention in the following ways:
1571 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1574 Lack of BER streaming support means one pass streaming processing is
1575 only supported if data is detached: setting the streaming flag is
1576 ignored for embedded content.
1578 CMS support is disabled by default and must be explicitly enabled
1579 with the enable-cms configuration option.
1582 *) Update the GMP engine glue to do direct copies between BIGNUM and
1583 mpz_t when openssl and GMP use the same limb size. Otherwise the
1584 existing "conversion via a text string export" trick is still used.
1585 [Paul Sheer <paulsheer@gmail.com>]
1587 *) Zlib compression BIO. This is a filter BIO which compressed and
1588 uncompresses any data passed through it.
1591 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1592 RFC3394 compatible AES key wrapping.
1595 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1596 sets string data without copying. X509_ALGOR_set0() and
1597 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1598 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1599 from an X509_ATTRIBUTE structure optionally checking it occurs only
1600 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1604 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1605 to get the expected BN_FLG_CONSTTIME behavior.
1606 [Bodo Moeller (Google)]
1610 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1611 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1612 - added some more tests to do_tests.pl
1613 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1614 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1615 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1616 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1617 - various changes to netware.pl to enable gcc-cross builds on Win32
1619 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1620 - various changes to fix missing prototype warnings
1621 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1622 - added AES, WHIRLPOOL and CPUID assembler code to build files
1623 - added missing AES assembler make rules to mk1mf.pl
1624 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1625 [Guenter Knauf <eflash@gmx.net>]
1627 *) Implement certificate status request TLS extension defined in RFC3546.
1628 A client can set the appropriate parameters and receive the encoded
1629 OCSP response via a callback. A server can query the supplied parameters
1630 and set the encoded OCSP response in the callback. Add simplified examples
1631 to s_client and s_server.
1634 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1636 *) Fix various bugs:
1637 + Binary incompatibility of ssl_ctx_st structure
1638 + DTLS interoperation with non-compliant servers
1639 + Don't call get_session_cb() without proposed session
1640 + Fix ia64 assembler code
1641 [Andy Polyakov, Steve Henson]
1643 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1645 *) DTLS Handshake overhaul. There were longstanding issues with
1646 OpenSSL DTLS implementation, which were making it impossible for
1647 RFC 4347 compliant client to communicate with OpenSSL server.
1648 Unfortunately just fixing these incompatibilities would "cut off"
1649 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1650 server keeps tolerating non RFC compliant syntax. The opposite is
1651 not true, 0.9.8f client can not communicate with earlier server.
1652 This update even addresses CVE-2007-4995.
1655 *) Changes to avoid need for function casts in OpenSSL: some compilers
1656 (gcc 4.2 and later) reject their use.
1657 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1660 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1661 RFC4507bis. The encrypted ticket format is an encrypted encoded
1662 SSL_SESSION structure, that way new session features are automatically
1665 If a client application caches session in an SSL_SESSION structure
1666 support is transparent because tickets are now stored in the encoded
1669 The SSL_CTX structure automatically generates keys for ticket
1670 protection in servers so again support should be possible
1671 with no application modification.
1673 If a client or server wishes to disable RFC4507 support then the option
1674 SSL_OP_NO_TICKET can be set.
1676 Add a TLS extension debugging callback to allow the contents of any client
1677 or server extensions to be examined.
1679 This work was sponsored by Google.
1682 *) Add initial support for TLS extensions, specifically for the server_name
1683 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1684 have new members for a host name. The SSL data structure has an
1685 additional member SSL_CTX *initial_ctx so that new sessions can be
1686 stored in that context to allow for session resumption, even after the
1687 SSL has been switched to a new SSL_CTX in reaction to a client's
1688 server_name extension.
1690 New functions (subject to change):
1692 SSL_get_servername()
1693 SSL_get_servername_type()
1696 New CTRL codes and macros (subject to change):
1698 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1699 - SSL_CTX_set_tlsext_servername_callback()
1700 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1701 - SSL_CTX_set_tlsext_servername_arg()
1702 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1704 openssl s_client has a new '-servername ...' option.
1706 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1707 '-key2 ...', '-servername_fatal' (subject to change). This allows
1708 testing the HostName extension for a specific single host name ('-cert'
1709 and '-key' remain fallbacks for handshakes without HostName
1710 negotiation). If the unrecogninzed_name alert has to be sent, this by
1711 default is a warning; it becomes fatal with the '-servername_fatal'
1714 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1716 *) Add AES and SSE2 assembly language support to VC++ build.
1719 *) Mitigate attack on final subtraction in Montgomery reduction.
1722 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1723 (which previously caused an internal error).
1726 *) Squeeze another 10% out of IGE mode when in != out.
1729 *) AES IGE mode speedup.
1730 [Dean Gaudet (Google)]
1732 *) Add the Korean symmetric 128-bit cipher SEED (see
1733 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1734 add SEED ciphersuites from RFC 4162:
1736 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1737 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1738 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1739 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1741 To minimize changes between patchlevels in the OpenSSL 0.9.8
1742 series, SEED remains excluded from compilation unless OpenSSL
1743 is configured with 'enable-seed'.
1744 [KISA, Bodo Moeller]
1746 *) Mitigate branch prediction attacks, which can be practical if a
1747 single processor is shared, allowing a spy process to extract
1748 information. For detailed background information, see
1749 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1750 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1751 and Necessary Software Countermeasures"). The core of the change
1752 are new versions BN_div_no_branch() and
1753 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1754 respectively, which are slower, but avoid the security-relevant
1755 conditional branches. These are automatically called by BN_div()
1756 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1757 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1758 remove a conditional branch.
1760 BN_FLG_CONSTTIME is the new name for the previous
1761 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1762 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1763 in the exponent causes BN_mod_exp_mont() to use the alternative
1764 implementation in BN_mod_exp_mont_consttime().) The old name
1765 remains as a deprecated alias.
1767 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1768 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1769 constant-time implementations for more than just exponentiation.
1770 Here too the old name is kept as a deprecated alias.
1772 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1773 the BN_BLINDING structure gets an independent copy of the
1774 modulus. This means that the previous "BIGNUM *m" argument to
1775 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1776 essentially becomes "const BIGNUM *m", although we can't actually
1777 change this in the header file before 0.9.9. It allows
1778 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1779 enable BN_FLG_CONSTTIME.
1781 [Matthew D Wood (Intel Corp)]
1783 *) In the SSL/TLS server implementation, be strict about session ID
1784 context matching (which matters if an application uses a single
1785 external cache for different purposes). Previously,
1786 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1787 set. This did ensure strict client verification, but meant that,
1788 with applications using a single external cache for quite
1789 different requirements, clients could circumvent ciphersuite
1790 restrictions for a given session ID context by starting a session
1791 in a different context.
1794 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1795 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1796 authentication-only ciphersuites.
1799 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1800 not complete and could lead to a possible single byte overflow
1801 (CVE-2007-5135) [Ben Laurie]
1803 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1805 *) Since AES128 and AES256 (and similarly Camellia128 and
1806 Camellia256) share a single mask bit in the logic of
1807 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1808 kludge to work properly if AES128 is available and AES256 isn't
1809 (or if Camellia128 is available and Camellia256 isn't).
1812 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1813 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1814 When a point or a seed is encoded in a BIT STRING, we need to
1815 prevent the removal of trailing zero bits to get the proper DER
1816 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1817 of a NamedBitList, for which trailing 0 bits need to be removed.)
1820 *) Have SSL/TLS server implementation tolerate "mismatched" record
1821 protocol version while receiving ClientHello even if the
1822 ClientHello is fragmented. (The server can't insist on the
1823 particular protocol version it has chosen before the ServerHello
1824 message has informed the client about his choice.)
1827 *) Add RFC 3779 support.
1828 [Rob Austein for ARIN, Ben Laurie]
1830 *) Load error codes if they are not already present instead of using a
1831 static variable. This allows them to be cleanly unloaded and reloaded.
1832 Improve header file function name parsing.
1835 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1836 or CAPABILITY handshake as required by RFCs.
1839 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1841 *) Introduce limits to prevent malicious keys being able to
1842 cause a denial of service. (CVE-2006-2940)
1843 [Steve Henson, Bodo Moeller]
1845 *) Fix ASN.1 parsing of certain invalid structures that can result
1846 in a denial of service. (CVE-2006-2937) [Steve Henson]
1848 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1849 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1851 *) Fix SSL client code which could crash if connecting to a
1852 malicious SSLv2 server. (CVE-2006-4343)
1853 [Tavis Ormandy and Will Drewry, Google Security Team]
1855 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1856 match only those. Before that, "AES256-SHA" would be interpreted
1857 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1858 the same strength classification in 0.9.7h) as we currently only
1859 have a single AES bit in the ciphersuite description bitmap.
1860 That change, however, also applied to ciphersuite strings such as
1861 "RC4-MD5" that intentionally matched multiple ciphersuites --
1862 namely, SSL 2.0 ciphersuites in addition to the more common ones
1863 from SSL 3.0/TLS 1.0.
1865 So we change the selection algorithm again: Naming an explicit
1866 ciphersuite selects this one ciphersuite, and any other similar
1867 ciphersuite (same bitmap) from *other* protocol versions.
1868 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1869 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1871 Since SSL 2.0 does not have any ciphersuites for which the
1872 128/256 bit distinction would be relevant, this works for now.
1873 The proper fix will be to use different bits for AES128 and
1874 AES256, which would have avoided the problems from the beginning;
1875 however, bits are scarce, so we can only do this in a new release
1876 (not just a patchlevel) when we can change the SSL_CIPHER
1877 definition to split the single 'unsigned long mask' bitmap into
1878 multiple values to extend the available space.
1882 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1884 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1885 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1887 *) Add AES IGE and biIGE modes.
1890 *) Change the Unix randomness entropy gathering to use poll() when
1891 possible instead of select(), since the latter has some
1892 undesirable limitations.
1893 [Darryl Miles via Richard Levitte and Bodo Moeller]
1895 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1896 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1897 cannot be implicitly activated as part of, e.g., the "AES" alias.
1898 However, please upgrade to OpenSSL 0.9.9[-dev] for
1899 non-experimental use of the ECC ciphersuites to get TLS extension
1900 support, which is required for curve and point format negotiation
1901 to avoid potential handshake problems.
1904 *) Disable rogue ciphersuites:
1906 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1907 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1908 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1910 The latter two were purportedly from
1911 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1914 Also deactivate the remaining ciphersuites from
1915 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1916 unofficial, and the ID has long expired.
1919 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1920 dual-core machines) and other potential thread-safety issues.
1923 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1924 versions), which is now available for royalty-free use
1925 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1926 Also, add Camellia TLS ciphersuites from RFC 4132.
1928 To minimize changes between patchlevels in the OpenSSL 0.9.8
1929 series, Camellia remains excluded from compilation unless OpenSSL
1930 is configured with 'enable-camellia'.
1933 *) Disable the padding bug check when compression is in use. The padding
1934 bug check assumes the first packet is of even length, this is not
1935 necessarily true if compresssion is enabled and can result in false
1936 positives causing handshake failure. The actual bug test is ancient
1937 code so it is hoped that implementations will either have fixed it by
1938 now or any which still have the bug do not support compression.
1941 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1943 *) When applying a cipher rule check to see if string match is an explicit
1944 cipher suite and only match that one cipher suite if it is.
1947 *) Link in manifests for VC++ if needed.
1948 [Austin Ziegler <halostatue@gmail.com>]
1950 *) Update support for ECC-based TLS ciphersuites according to
1951 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1952 TLS extensions, which are supported starting with the 0.9.9
1953 branch, not in the OpenSSL 0.9.8 branch).
1956 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1957 opaque EVP_CIPHER_CTX handling.
1960 *) Fixes and enhancements to zlib compression code. We now only use
1961 "zlib1.dll" and use the default __cdecl calling convention on Win32
1962 to conform with the standards mentioned here:
1963 http://www.zlib.net/DLL_FAQ.txt
1964 Static zlib linking now works on Windows and the new --with-zlib-include
1965 --with-zlib-lib options to Configure can be used to supply the location
1966 of the headers and library. Gracefully handle case where zlib library
1970 *) Several fixes and enhancements to the OID generation code. The old code
1971 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1972 handle numbers larger than ULONG_MAX, truncated printing and had a
1973 non standard OBJ_obj2txt() behaviour.
1976 *) Add support for building of engines under engine/ as shared libraries
1977 under VC++ build system.
1980 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1981 Hopefully, we will not see any false combination of paths any more.
1984 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1986 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1987 (part of SSL_OP_ALL). This option used to disable the
1988 countermeasure against man-in-the-middle protocol-version
1989 rollback in the SSL 2.0 server implementation, which is a bad
1990 idea. (CVE-2005-2969)
1992 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1993 for Information Security, National Institute of Advanced Industrial
1994 Science and Technology [AIST], Japan)]
1996 *) Add two function to clear and return the verify parameter flags.
1999 *) Keep cipherlists sorted in the source instead of sorting them at
2000 runtime, thus removing the need for a lock.
2003 *) Avoid some small subgroup attacks in Diffie-Hellman.
2004 [Nick Mathewson and Ben Laurie]
2006 *) Add functions for well-known primes.
2009 *) Extended Windows CE support.
2010 [Satoshi Nakamura and Andy Polyakov]
2012 *) Initialize SSL_METHOD structures at compile time instead of during
2013 runtime, thus removing the need for a lock.
2016 *) Make PKCS7_decrypt() work even if no certificate is supplied by
2017 attempting to decrypt each encrypted key in turn. Add support to
2021 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
2023 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
2026 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
2029 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
2030 key into the same file any more.
2033 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
2036 *) Add -utf8 command line and config file option to 'ca'.
2037 [Stefan <stf@udoma.org]
2039 *) Removed the macro des_crypt(), as it seems to conflict with some
2040 libraries. Use DES_crypt().
2043 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
2044 involves renaming the source and generated shared-libs for
2045 both. The engines will accept the corrected or legacy ids
2046 ('ncipher' and '4758_cca' respectively) when binding. NB,
2047 this only applies when building 'shared'.
2048 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
2050 *) Add attribute functions to EVP_PKEY structure. Modify
2051 PKCS12_create() to recognize a CSP name attribute and
2052 use it. Make -CSP option work again in pkcs12 utility.
2055 *) Add new functionality to the bn blinding code:
2056 - automatic re-creation of the BN_BLINDING parameters after
2057 a fixed number of uses (currently 32)
2058 - add new function for parameter creation
2059 - introduce flags to control the update behaviour of the
2060 BN_BLINDING parameters
2061 - hide BN_BLINDING structure
2062 Add a second BN_BLINDING slot to the RSA structure to improve
2063 performance when a single RSA object is shared among several
2067 *) Add support for DTLS.
2068 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
2070 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
2071 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
2074 *) Remove buggy and incompletet DH cert support from
2075 ssl/ssl_rsa.c and ssl/s3_both.c
2078 *) Use SHA-1 instead of MD5 as the default digest algorithm for
2079 the apps/openssl applications.
2082 *) Compile clean with "-Wall -Wmissing-prototypes
2083 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
2084 DEBUG_SAFESTACK must also be set.
2087 *) Change ./Configure so that certain algorithms can be disabled by default.
2088 The new counterpiece to "no-xxx" is "enable-xxx".
2090 The patented RC5 and MDC2 algorithms will now be disabled unless
2091 "enable-rc5" and "enable-mdc2", respectively, are specified.
2093 (IDEA remains enabled despite being patented. This is because IDEA
2094 is frequently required for interoperability, and there is no license
2095 fee for non-commercial use. As before, "no-idea" can be used to
2096 avoid this algorithm.)
2100 *) Add processing of proxy certificates (see RFC 3820). This work was
2101 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
2102 EGEE (Enabling Grids for E-science in Europe).
2105 *) RC4 performance overhaul on modern architectures/implementations, such
2106 as Intel P4, IA-64 and AMD64.
2109 *) New utility extract-section.pl. This can be used specify an alternative
2110 section number in a pod file instead of having to treat each file as
2111 a separate case in Makefile. This can be done by adding two lines to the
2114 =for comment openssl_section:XXX
2116 The blank line is mandatory.
2120 *) New arguments -certform, -keyform and -pass for s_client and s_server
2121 to allow alternative format key and certificate files and passphrase
2125 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2126 update associated structures and add various utility functions.
2128 Add new policy related verify parameters, include policy checking in
2129 standard verify code. Enhance 'smime' application with extra parameters
2130 to support policy checking and print out.
2133 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2134 Nehemiah processors. These extensions support AES encryption in hardware
2135 as well as RNG (though RNG support is currently disabled).
2136 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2138 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2141 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2142 [Andy Polyakov and a number of other people]
2144 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2145 implementation contributed by IBM.
2146 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2148 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2149 exponent rather than 'unsigned long'. There is a corresponding change to
2150 the new 'rsa_keygen' element of the RSA_METHOD structure.
2151 [Jelte Jansen, Geoff Thorpe]
2153 *) Functionality for creating the initial serial number file is now
2154 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2156 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2157 number file to 1, which is bound to cause problems. To avoid
2158 the problems while respecting compatibility between different 0.9.7
2159 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2160 CA.pl for serial number initialization. With the new release 0.9.8,
2161 we can fix the problem directly in the 'ca' utility.)
2164 *) Reduced header interdepencies by declaring more opaque objects in
2165 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2166 give fewer recursive includes, which could break lazy source code - so
2167 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2168 developers should define this symbol when building and using openssl to
2169 ensure they track the recommended behaviour, interfaces, [etc], but
2170 backwards-compatible behaviour prevails when this isn't defined.
2173 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2176 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2177 This will generate a random key of the appropriate length based on the
2178 cipher context. The EVP_CIPHER can provide its own random key generation
2179 routine to support keys of a specific form. This is used in the des and
2180 3des routines to generate a key of the correct parity. Update S/MIME
2181 code to use new functions and hence generate correct parity DES keys.
2182 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2183 valid (weak or incorrect parity).
2186 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2187 as looking them up. This is useful when the verified structure may contain
2188 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2189 present unless the new PKCS7_NO_CRL flag is asserted.
2192 *) Extend ASN1 oid configuration module. It now additionally accepts the
2195 shortName = some long name, 1.2.3.4
2198 *) Reimplemented the BN_CTX implementation. There is now no more static
2199 limitation on the number of variables it can handle nor the depth of the
2200 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2201 information can now expand as required, and rather than having a single
2202 static array of bignums, BN_CTX now uses a linked-list of such arrays
2203 allowing it to expand on demand whilst maintaining the usefulness of
2204 BN_CTX's "bundling".
2207 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2208 to allow all RSA operations to function using a single BN_CTX.
2211 *) Preliminary support for certificate policy evaluation and checking. This
2212 is initially intended to pass the tests outlined in "Conformance Testing
2213 of Relying Party Client Certificate Path Processing Logic" v1.07.
2216 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2217 remained unused and not that useful. A variety of other little bignum
2218 tweaks and fixes have also been made continuing on from the audit (see
2222 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2223 associated ASN1, EVP and SSL functions and old ASN1 macros.
2226 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2227 and this should never fail. So the return value from the use of
2228 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2229 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2232 *) BN_CTX_get() should return zero-valued bignums, providing the same
2233 initialised value as BN_new().
2234 [Geoff Thorpe, suggested by Ulf Möller]
2236 *) Support for inhibitAnyPolicy certificate extension.
2239 *) An audit of the BIGNUM code is underway, for which debugging code is
2240 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2241 is considered valid when processing BIGNUMs, and causes execution to
2242 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2243 further steps are taken to deliberately pollute unused data in BIGNUM
2244 structures to try and expose faulty code further on. For now, openssl will
2245 (in its default mode of operation) continue to tolerate the inconsistent
2246 forms that it has tolerated in the past, but authors and packagers should
2247 consider trying openssl and their own applications when compiled with
2248 these debugging symbols defined. It will help highlight potential bugs in
2249 their own code, and will improve the test coverage for OpenSSL itself. At
2250 some point, these tighter rules will become openssl's default to improve
2251 maintainability, though the assert()s and other overheads will remain only
2252 in debugging configurations. See bn.h for more details.
2253 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2255 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2256 that can only be obtained through BN_CTX_new() (which implicitly
2257 initialises it). The presence of this function only made it possible
2258 to overwrite an existing structure (and cause memory leaks).
2261 *) Because of the callback-based approach for implementing LHASH as a
2262 template type, lh_insert() adds opaque objects to hash-tables and
2263 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2264 to clean up those corresponding objects before destroying the hash table
2265 (and losing the object pointers). So some over-zealous constifications in
2266 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2267 objects as "const" and the lh_doall[_arg] callback wrappers are not
2268 prototyped to have "const" restrictions on the object pointers they are
2269 given (and so aren't required to cast them away any more).
2272 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2273 (speed) prefers to use its own implementation. The two implementations
2274 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2275 its object type properly exposed (MS_TM) instead of casting to/from "char
2276 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2277 aren't necessarily the greatest nomenclatures - but this is what was used
2278 internally to the implementation so I've used that for now.
2281 *) Ensure that deprecated functions do not get compiled when
2282 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2283 the self-tests were still using deprecated key-generation functions so
2284 these have been updated also.
2287 *) Reorganise PKCS#7 code to separate the digest location functionality
2288 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2289 New function PKCS7_set_digest() to set the digest type for PKCS#7
2290 digestedData type. Add additional code to correctly generate the
2291 digestedData type and add support for this type in PKCS7 initialization
2295 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2296 structure of type "other".
2299 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2300 sure the loop does correctly stop and breaking ("division by zero")
2301 modulus operations are not performed. The (pre-generated) prime
2302 table crypto/bn/bn_prime.h was already correct, but it could not be
2303 re-generated on some platforms because of the "division by zero"
2304 situation in the script.
2305 [Ralf S. Engelschall]
2307 *) Update support for ECC-based TLS ciphersuites according to
2308 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2309 SHA-1 now is only used for "small" curves (where the
2310 representation of a field element takes up to 24 bytes); for
2311 larger curves, the field element resulting from ECDH is directly
2312 used as premaster secret.
2313 [Douglas Stebila (Sun Microsystems Laboratories)]
2315 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2316 curve secp160r1 to the tests.
2317 [Douglas Stebila (Sun Microsystems Laboratories)]
2319 *) Add the possibility to load symbols globally with DSO.
2320 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2322 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2323 control of the error stack.
2326 *) Add support for STORE in ENGINE.
2329 *) Add the STORE type. The intention is to provide a common interface
2330 to certificate and key stores, be they simple file-based stores, or
2331 HSM-type store, or LDAP stores, or...
2332 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2335 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2336 pass a list of arguments to any function as well as provide a way
2337 for a function to pass data back to the caller.
2340 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2341 works like BUF_strdup() but can be used to duplicate a portion of
2342 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2346 *) Add the function sk_find_ex() which works like sk_find(), but will
2347 return an index to an element even if an exact match couldn't be
2348 found. The index is guaranteed to point at the element where the
2349 searched-for key would be inserted to preserve sorting order.
2352 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2353 takes an extra flags argument for optional functionality. Currently,
2354 the following flags are defined:
2356 OBJ_BSEARCH_VALUE_ON_NOMATCH
2357 This one gets OBJ_bsearch_ex() to return a pointer to the first
2358 element where the comparing function returns a negative or zero
2361 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2362 This one gets OBJ_bsearch_ex() to return a pointer to the first
2363 element where the comparing function returns zero. This is useful
2364 if there are more than one element where the comparing function
2368 *) Make it possible to create self-signed certificates with 'openssl ca'
2369 in such a way that the self-signed certificate becomes part of the
2370 CA database and uses the same mechanisms for serial number generation
2371 as all other certificate signing. The new flag '-selfsign' enables
2372 this functionality. Adapt CA.sh and CA.pl.in.
2375 *) Add functionality to check the public key of a certificate request
2376 against a given private. This is useful to check that a certificate
2377 request can be signed by that key (self-signing).
2380 *) Make it possible to have multiple active certificates with the same
2381 subject in the CA index file. This is done only if the keyword
2382 'unique_subject' is set to 'no' in the main CA section (default
2383 if 'CA_default') of the configuration file. The value is saved
2384 with the database itself in a separate index attribute file,
2385 named like the index file with '.attr' appended to the name.
2388 *) Generate muti valued AVAs using '+' notation in config files for
2392 *) Support for nameConstraints certificate extension.
2395 *) Support for policyConstraints certificate extension.
2398 *) Support for policyMappings certificate extension.
2401 *) Make sure the default DSA_METHOD implementation only uses its
2402 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2403 and change its own handlers to be NULL so as to remove unnecessary
2404 indirection. This lets alternative implementations fallback to the
2405 default implementation more easily.
2408 *) Support for directoryName in GeneralName related extensions
2412 *) Make it possible to link applications using Makefile.shared.
2413 Make that possible even when linking against static libraries!
2416 *) Support for single pass processing for S/MIME signing. This now
2417 means that S/MIME signing can be done from a pipe, in addition
2418 cleartext signing (multipart/signed type) is effectively streaming
2419 and the signed data does not need to be all held in memory.
2421 This is done with a new flag PKCS7_STREAM. When this flag is set
2422 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2423 is done after the data is output (and digests calculated) in
2424 SMIME_write_PKCS7().
2427 *) Add full support for -rpath/-R, both in shared libraries and
2428 applications, at least on the platforms where it's known how
2432 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2433 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2434 will now compute a table of multiples of the generator that
2435 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2436 faster (notably in the case of a single point multiplication,
2437 scalar * generator).
2438 [Nils Larsch, Bodo Moeller]
2440 *) IPv6 support for certificate extensions. The various extensions
2441 which use the IP:a.b.c.d can now take IPv6 addresses using the
2442 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2446 *) Added an ENGINE that implements RSA by performing private key
2447 exponentiations with the GMP library. The conversions to and from
2448 GMP's mpz_t format aren't optimised nor are any montgomery forms
2449 cached, and on x86 it appears OpenSSL's own performance has caught up.
2450 However there are likely to be other architectures where GMP could
2451 provide a boost. This ENGINE is not built in by default, but it can be
2452 specified at Configure time and should be accompanied by the necessary
2453 linker additions, eg;
2454 ./config -DOPENSSL_USE_GMP -lgmp
2457 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2458 testing availability of engines with "-t" - the old behaviour is
2459 produced by increasing the feature's verbosity with "-tt".
2462 *) ECDSA routines: under certain error conditions uninitialized BN objects
2463 could be freed. Solution: make sure initialization is performed early
2464 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2468 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2469 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2470 software implementations. For DSA and DH, parameter generation can
2471 also be overriden by providing the appropriate method callbacks.
2474 *) Change the "progress" mechanism used in key-generation and
2475 primality testing to functions that take a new BN_GENCB pointer in
2476 place of callback/argument pairs. The new API functions have "_ex"
2477 postfixes and the older functions are reimplemented as wrappers for
2478 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2479 declarations of the old functions to help (graceful) attempts to
2480 migrate to the new functions. Also, the new key-generation API
2481 functions operate on a caller-supplied key-structure and return
2482 success/failure rather than returning a key or NULL - this is to
2483 help make "keygen" another member function of RSA_METHOD etc.
2485 Example for using the new callback interface:
2487 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2491 BN_GENCB_set(&my_cb, my_callback, my_arg);
2493 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2494 /* For the meaning of a, b in calls to my_callback(), see the
2495 * documentation of the function that calls the callback.
2496 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2497 * my_callback should return 1 if it wants BN_is_prime_ex()
2498 * to continue, or 0 to stop.
2503 *) Change the ZLIB compression method to be stateful, and make it
2504 available to TLS with the number defined in
2505 draft-ietf-tls-compression-04.txt.
2508 *) Add the ASN.1 structures and functions for CertificatePair, which
2509 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2511 CertificatePair ::= SEQUENCE {
2512 forward [0] Certificate OPTIONAL,
2513 reverse [1] Certificate OPTIONAL,
2514 -- at least one of the pair shall be present -- }
2516 Also implement the PEM functions to read and write certificate
2517 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2519 This needed to be defined, mostly for the sake of the LDAP
2520 attribute crossCertificatePair, but may prove useful elsewhere as
2524 *) Make it possible to inhibit symlinking of shared libraries in
2525 Makefile.shared, for Cygwin's sake.
2528 *) Extend the BIGNUM API by creating a function
2529 void BN_set_negative(BIGNUM *a, int neg);
2530 and a macro that behave like
2531 int BN_is_negative(const BIGNUM *a);
2533 to avoid the need to access 'a->neg' directly in applications.
2536 *) Implement fast modular reduction for pseudo-Mersenne primes
2537 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2538 EC_GROUP_new_curve_GFp() will now automatically use this
2540 [Nils Larsch <nla@trustcenter.de>]
2542 *) Add new lock type (CRYPTO_LOCK_BN).
2545 *) Change the ENGINE framework to automatically load engines
2546 dynamically from specific directories unless they could be
2547 found to already be built in or loaded. Move all the
2548 current engines except for the cryptodev one to a new
2550 The engines in engines/ are built as shared libraries if
2551 the "shared" options was given to ./Configure or ./config.
2552 Otherwise, they are inserted in libcrypto.a.
2553 /usr/local/ssl/engines is the default directory for dynamic
2554 engines, but that can be overriden at configure time through
2555 the usual use of --prefix and/or --openssldir, and at run
2556 time with the environment variable OPENSSL_ENGINES.
2557 [Geoff Thorpe and Richard Levitte]
2559 *) Add Makefile.shared, a helper makefile to build shared
2560 libraries. Addapt Makefile.org.
2563 *) Add version info to Win32 DLLs.
2564 [Peter 'Luna' Runestig" <peter@runestig.com>]
2566 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2567 can be added using this API to created arbitrary PKCS#12
2568 files while avoiding the low level API.
2570 New options to PKCS12_create(), key or cert can be NULL and
2571 will then be omitted from the output file. The encryption
2572 algorithm NIDs can be set to -1 for no encryption, the mac
2573 iteration count can be set to 0 to omit the mac.
2575 Enhance pkcs12 utility by making the -nokeys and -nocerts
2576 options work when creating a PKCS#12 file. New option -nomac
2577 to omit the mac, NONE can be set for an encryption algorithm.
2578 New code is modified to use the enhanced PKCS12_create()
2579 instead of the low level API.
2582 *) Extend ASN1 encoder to support indefinite length constructed
2583 encoding. This can output sequences tags and octet strings in
2584 this form. Modify pk7_asn1.c to support indefinite length
2585 encoding. This is experimental and needs additional code to
2586 be useful, such as an ASN1 bio and some enhanced streaming
2589 Extend template encode functionality so that tagging is passed
2590 down to the template encoder.
2593 *) Let 'openssl req' fail if an argument to '-newkey' is not
2594 recognized instead of using RSA as a default.
2597 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2598 As these are not official, they are not included in "ALL";
2599 the "ECCdraft" ciphersuite group alias can be used to select them.
2600 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2602 *) Add ECDH engine support.
2603 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2605 *) Add ECDH in new directory crypto/ecdh/.
2606 [Douglas Stebila (Sun Microsystems Laboratories)]
2608 *) Let BN_rand_range() abort with an error after 100 iterations
2609 without success (which indicates a broken PRNG).
2612 *) Change BN_mod_sqrt() so that it verifies that the input value
2613 is really the square of the return value. (Previously,
2614 BN_mod_sqrt would show GIGO behaviour.)
2617 *) Add named elliptic curves over binary fields from X9.62, SECG,
2618 and WAP/WTLS; add OIDs that were still missing.
2620 [Sheueling Chang Shantz and Douglas Stebila
2621 (Sun Microsystems Laboratories)]
2623 *) Extend the EC library for elliptic curves over binary fields
2624 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2627 EC_GF2m_simple_method
2631 EC_GROUP_new_curve_GF2m
2632 EC_GROUP_set_curve_GF2m
2633 EC_GROUP_get_curve_GF2m
2634 EC_POINT_set_affine_coordinates_GF2m
2635 EC_POINT_get_affine_coordinates_GF2m
2636 EC_POINT_set_compressed_coordinates_GF2m
2638 Point compression for binary fields is disabled by default for
2639 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2642 As binary polynomials are represented as BIGNUMs, various members
2643 of the EC_GROUP and EC_POINT data structures can be shared
2644 between the implementations for prime fields and binary fields;
2645 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2646 are essentially identical to their ..._GFp counterparts.
2647 (For simplicity, the '..._GFp' prefix has been dropped from
2648 various internal method names.)
2650 An internal 'field_div' method (similar to 'field_mul' and
2651 'field_sqr') has been added; this is used only for binary fields.
2653 [Sheueling Chang Shantz and Douglas Stebila
2654 (Sun Microsystems Laboratories)]
2656 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2657 through methods ('mul', 'precompute_mult').
2659 The generic implementations (now internally called 'ec_wNAF_mul'
2660 and 'ec_wNAF_precomputed_mult') remain the default if these
2661 methods are undefined.
2663 [Sheueling Chang Shantz and Douglas Stebila
2664 (Sun Microsystems Laboratories)]
2666 *) New function EC_GROUP_get_degree, which is defined through
2667 EC_METHOD. For curves over prime fields, this returns the bit
2668 length of the modulus.
2670 [Sheueling Chang Shantz and Douglas Stebila
2671 (Sun Microsystems Laboratories)]
2673 *) New functions EC_GROUP_dup, EC_POINT_dup.
2674 (These simply call ..._new and ..._copy).
2676 [Sheueling Chang Shantz and Douglas Stebila
2677 (Sun Microsystems Laboratories)]
2679 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2680 Polynomials are represented as BIGNUMs (where the sign bit is not
2681 used) in the following functions [macros]:
2684 BN_GF2m_sub [= BN_GF2m_add]
2685 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2686 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2687 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2689 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2690 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2691 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2692 BN_GF2m_cmp [= BN_ucmp]
2694 (Note that only the 'mod' functions are actually for fields GF(2^m).
2695 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2697 For some functions, an the irreducible polynomial defining a
2698 field can be given as an 'unsigned int[]' with strictly
2699 decreasing elements giving the indices of those bits that are set;
2700 i.e., p[] represents the polynomial
2701 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2703 p[0] > p[1] > ... > p[k] = 0.
2704 This applies to the following functions:
2709 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2710 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2712 BN_GF2m_mod_sqrt_arr
2713 BN_GF2m_mod_solve_quad_arr
2717 Conversion can be performed by the following functions:
2722 bntest.c has additional tests for binary polynomial arithmetic.
2724 Two implementations for BN_GF2m_mod_div() are available.
2725 The default algorithm simply uses BN_GF2m_mod_inv() and
2726 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2727 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2728 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2730 [Sheueling Chang Shantz and Douglas Stebila
2731 (Sun Microsystems Laboratories)]
2733 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2734 functionality is disabled at compile-time.
2735 [Douglas Stebila <douglas.stebila@sun.com>]
2737 *) Change default behaviour of 'openssl asn1parse' so that more
2738 information is visible when viewing, e.g., a certificate:
2740 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2741 mode the content of non-printable OCTET STRINGs is output in a
2742 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2743 avoid the appearance of a printable string.
2744 [Nils Larsch <nla@trustcenter.de>]
2746 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2748 EC_GROUP_set_asn1_flag()
2749 EC_GROUP_get_asn1_flag()
2750 EC_GROUP_set_point_conversion_form()
2751 EC_GROUP_get_point_conversion_form()
2752 These control ASN1 encoding details:
2753 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2754 has been set to OPENSSL_EC_NAMED_CURVE.
2755 - Points are encoded in uncompressed form by default; options for
2756 asn1_for are as for point2oct, namely
2757 POINT_CONVERSION_COMPRESSED
2758 POINT_CONVERSION_UNCOMPRESSED
2759 POINT_CONVERSION_HYBRID
2761 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2764 EC_GROUP_get0_seed()
2765 EC_GROUP_get_seed_len()
2766 This is used only for ASN1 purposes (so far).
2767 [Nils Larsch <nla@trustcenter.de>]
2769 *) Add 'field_type' member to EC_METHOD, which holds the NID
2770 of the appropriate field type OID. The new function
2771 EC_METHOD_get_field_type() returns this value.
2772 [Nils Larsch <nla@trustcenter.de>]
2777 EC_POINT_point2hex()
2778 EC_POINT_hex2point()
2779 providing useful interfaces to EC_POINT_point2oct() and
2780 EC_POINT_oct2point().
2781 [Nils Larsch <nla@trustcenter.de>]
2783 *) Change internals of the EC library so that the functions
2784 EC_GROUP_set_generator()
2785 EC_GROUP_get_generator()
2786 EC_GROUP_get_order()
2787 EC_GROUP_get_cofactor()
2788 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2789 to methods, which would lead to unnecessary code duplication when
2790 adding different types of curves.
2791 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2793 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2794 arithmetic, and such that modified wNAFs are generated
2795 (which avoid length expansion in many cases).
2798 *) Add a function EC_GROUP_check_discriminant() (defined via
2799 EC_METHOD) that verifies that the curve discriminant is non-zero.
2801 Add a function EC_GROUP_check() that makes some sanity tests
2802 on a EC_GROUP, its generator and order. This includes
2803 EC_GROUP_check_discriminant().
2804 [Nils Larsch <nla@trustcenter.de>]
2806 *) Add ECDSA in new directory crypto/ecdsa/.
2808 Add applications 'openssl ecparam' and 'openssl ecdsa'
2809 (these are based on 'openssl dsaparam' and 'openssl dsa').
2811 ECDSA support is also included in various other files across the
2812 library. Most notably,
2813 - 'openssl req' now has a '-newkey ecdsa:file' option;
2814 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2815 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2816 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2817 them suitable for ECDSA where domain parameters must be
2818 extracted before the specific public key;
2819 - ECDSA engine support has been added.
2820 [Nils Larsch <nla@trustcenter.de>]
2822 *) Include some named elliptic curves, and add OIDs from X9.62,
2823 SECG, and WAP/WTLS. Each curve can be obtained from the new
2825 EC_GROUP_new_by_curve_name(),
2826 and the list of available named curves can be obtained with
2827 EC_get_builtin_curves().
2828 Also add a 'curve_name' member to EC_GROUP objects, which can be
2830 EC_GROUP_set_curve_name()
2831 EC_GROUP_get_curve_name()
2832 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2834 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2835 was actually never needed) and in BN_mul(). The removal in BN_mul()
2836 required a small change in bn_mul_part_recursive() and the addition
2837 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2838 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2839 bn_sub_words() and bn_add_words() except they take arrays with
2843 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2845 *) Cleanse PEM buffers before freeing them since they may contain
2847 [Benjamin Bennett <ben@psc.edu>]
2849 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2850 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2851 authentication-only ciphersuites.
2854 *) Since AES128 and AES256 share a single mask bit in the logic of
2855 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2856 kludge to work properly if AES128 is available and AES256 isn't.
2859 *) Expand security boundary to match 1.1.1 module.
2862 *) Remove redundant features: hash file source, editing of test vectors
2863 modify fipsld to use external fips_premain.c signature.
2866 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2867 run algorithm test programs.
2870 *) Make algorithm test programs more tolerant of whitespace.
2873 *) Have SSL/TLS server implementation tolerate "mismatched" record
2874 protocol version while receiving ClientHello even if the
2875 ClientHello is fragmented. (The server can't insist on the
2876 particular protocol version it has chosen before the ServerHello
2877 message has informed the client about his choice.)
2880 *) Load error codes if they are not already present instead of using a
2881 static variable. This allows them to be cleanly unloaded and reloaded.
2884 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2886 *) Introduce limits to prevent malicious keys being able to
2887 cause a denial of service. (CVE-2006-2940)
2888 [Steve Henson, Bodo Moeller]
2890 *) Fix ASN.1 parsing of certain invalid structures that can result
2891 in a denial of service. (CVE-2006-2937) [Steve Henson]
2893 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2894 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2896 *) Fix SSL client code which could crash if connecting to a
2897 malicious SSLv2 server. (CVE-2006-4343)
2898 [Tavis Ormandy and Will Drewry, Google Security Team]
2900 *) Change ciphersuite string processing so that an explicit
2901 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2902 will no longer include "AES128-SHA"), and any other similar
2903 ciphersuite (same bitmap) from *other* protocol versions (so that
2904 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2905 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2906 changes from 0.9.8b and 0.9.8d.
2909 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2911 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2912 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2914 *) Change the Unix randomness entropy gathering to use poll() when
2915 possible instead of select(), since the latter has some
2916 undesirable limitations.
2917 [Darryl Miles via Richard Levitte and Bodo Moeller]
2919 *) Disable rogue ciphersuites:
2921 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2922 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2923 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2925 The latter two were purportedly from
2926 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2929 Also deactive the remaining ciphersuites from
2930 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2931 unofficial, and the ID has long expired.
2934 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2935 dual-core machines) and other potential thread-safety issues.
2938 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2940 *) Adapt fipsld and the build system to link against the validated FIPS
2941 module in FIPS mode.
2944 *) Fixes for VC++ 2005 build under Windows.
2947 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2948 from a Windows bash shell such as MSYS. It is autodetected from the
2949 "config" script when run from a VC++ environment. Modify standard VC++
2950 build to use fipscanister.o from the GNU make build.
2953 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2955 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2956 The value now differs depending on if you build for FIPS or not.
2957 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2958 safely run with a non-FIPSed libcrypto, as it may crash because of
2959 the difference induced by this change.
2962 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2964 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2965 (part of SSL_OP_ALL). This option used to disable the
2966 countermeasure against man-in-the-middle protocol-version
2967 rollback in the SSL 2.0 server implementation, which is a bad
2968 idea. (CVE-2005-2969)
2970 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2971 for Information Security, National Institute of Advanced Industrial
2972 Science and Technology [AIST], Japan)]
2974 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2975 mainly for FIPS compliance and not fully integrated at this stage.
2978 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2979 the exponentiation using a fixed-length exponent. (Otherwise,
2980 the information leaked through timing could expose the secret key
2981 after many signatures; cf. Bleichenbacher's attack on DSA with
2985 *) Make a new fixed-window mod_exp implementation the default for
2986 RSA, DSA, and DH private-key operations so that the sequence of
2987 squares and multiplies and the memory access pattern are
2988 independent of the particular secret key. This will mitigate
2989 cache-timing and potential related attacks.
2991 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2992 and this is automatically used by BN_mod_exp_mont() if the new flag
2993 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2994 will use this BN flag for private exponents unless the flag
2995 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2996 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2998 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
3000 *) Change the client implementation for SSLv23_method() and
3001 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
3002 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
3003 (Previously, the SSL 2.0 backwards compatible Client Hello
3004 message format would be used even with SSL_OP_NO_SSLv2.)
3007 *) Add support for smime-type MIME parameter in S/MIME messages which some
3011 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
3012 a threadsafe manner. Modify rsa code to use new function and add calls
3013 to dsa and dh code (which had race conditions before).
3016 *) Include the fixed error library code in the C error file definitions
3017 instead of fixing them up at runtime. This keeps the error code
3018 structures constant.
3021 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
3023 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
3026 *) Fixes for newer kerberos headers. NB: the casts are needed because
3027 the 'length' field is signed on one version and unsigned on another
3028 with no (?) obvious way to tell the difference, without these VC++
3029 complains. Also the "definition" of FAR (blank) is no longer included
3030 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
3031 some needed definitions.
3034 *) Undo Cygwin change.
3037 *) Added support for proxy certificates according to RFC 3820.
3038 Because they may be a security thread to unaware applications,
3039 they must be explicitely allowed in run-time. See
3040 docs/HOWTO/proxy_certificates.txt for further information.
3043 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
3045 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
3046 server and client random values. Previously
3047 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
3048 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
3050 This change has negligible security impact because:
3052 1. Server and client random values still have 24 bytes of pseudo random
3055 2. Server and client random values are sent in the clear in the initial
3058 3. The master secret is derived using the premaster secret (48 bytes in
3059 size for static RSA ciphersuites) as well as client server and random
3062 The OpenSSL team would like to thank the UK NISCC for bringing this issue
3065 [Stephen Henson, reported by UK NISCC]
3067 *) Use Windows randomness collection on Cygwin.
3070 *) Fix hang in EGD/PRNGD query when communication socket is closed
3071 prematurely by EGD/PRNGD.
3072 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
3074 *) Prompt for pass phrases when appropriate for PKCS12 input format.
3077 *) Back-port of selected performance improvements from development
3078 branch, as well as improved support for PowerPC platforms.
3081 *) Add lots of checks for memory allocation failure, error codes to indicate
3082 failure and freeing up memory if a failure occurs.
3083 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
3085 *) Add new -passin argument to dgst.
3088 *) Perform some character comparisons of different types in X509_NAME_cmp:
3089 this is needed for some certificates that reencode DNs into UTF8Strings
3090 (in violation of RFC3280) and can't or wont issue name rollover
3094 *) Make an explicit check during certificate validation to see that
3095 the CA setting in each certificate on the chain is correct. As a
3096 side effect always do the following basic checks on extensions,
3097 not just when there's an associated purpose to the check:
3099 - if there is an unhandled critical extension (unless the user
3100 has chosen to ignore this fault)
3101 - if the path length has been exceeded (if one is set at all)
3102 - that certain extensions fit the associated purpose (if one has
3106 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
3108 *) Avoid a race condition when CRLs are checked in a multi threaded
3109 environment. This would happen due to the reordering of the revoked
3110 entries during signature checking and serial number lookup. Now the
3111 encoding is cached and the serial number sort performed under a lock.
3112 Add new STACK function sk_is_sorted().
3115 *) Add Delta CRL to the extension code.
3118 *) Various fixes to s3_pkt.c so alerts are sent properly.
3119 [David Holmes <d.holmes@f5.com>]
3121 *) Reduce the chances of duplicate issuer name and serial numbers (in
3122 violation of RFC3280) using the OpenSSL certificate creation utilities.
3123 This is done by creating a random 64 bit value for the initial serial
3124 number when a serial number file is created or when a self signed
3125 certificate is created using 'openssl req -x509'. The initial serial
3126 number file is created using 'openssl x509 -next_serial' in CA.pl
3127 rather than being initialized to 1.
3130 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3132 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3133 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3134 [Joe Orton, Steve Henson]
3136 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3138 [Joe Orton, Steve Henson]
3140 *) Make it possible to have multiple active certificates with the same
3141 subject in the CA index file. This is done only if the keyword
3142 'unique_subject' is set to 'no' in the main CA section (default
3143 if 'CA_default') of the configuration file. The value is saved
3144 with the database itself in a separate index attribute file,
3145 named like the index file with '.attr' appended to the name.
3148 *) X509 verify fixes. Disable broken certificate workarounds when
3149 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3150 keyUsage extension present. Don't accept CRLs with unhandled critical
3151 extensions: since verify currently doesn't process CRL extensions this
3152 rejects a CRL with *any* critical extensions. Add new verify error codes
3156 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3157 A clarification of RFC2560 will require the use of OCTET STRINGs and
3158 some implementations cannot handle the current raw format. Since OpenSSL
3159 copies and compares OCSP nonces as opaque blobs without any attempt at
3160 parsing them this should not create any compatibility issues.
3163 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3164 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3165 this HMAC (and other) operations are several times slower than OpenSSL
3169 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3170 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3172 *) Use the correct content when signing type "other".
3175 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3177 *) Fix various bugs revealed by running the NISCC test suite:
3179 Stop out of bounds reads in the ASN1 code when presented with
3180 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3182 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3184 If verify callback ignores invalid public key errors don't try to check
3185 certificate signature with the NULL public key.
3189 *) New -ignore_err option in ocsp application to stop the server
3190 exiting on the first error in a request.
3193 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3194 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3198 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3199 extra data after the compression methods not only for TLS 1.0
3200 but also for SSL 3.0 (as required by the specification).
3201 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3203 *) Change X509_certificate_type() to mark the key as exported/exportable
3204 when it's 512 *bits* long, not 512 bytes.
3207 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3208 blocks during encryption.
3211 *) Various fixes to base64 BIO and non blocking I/O. On write
3212 flushes were not handled properly if the BIO retried. On read
3213 data was not being buffered properly and had various logic bugs.
3214 This also affects blocking I/O when the data being decoded is a
3218 *) Various S/MIME bugfixes and compatibility changes:
3219 output correct application/pkcs7 MIME type if
3220 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3221 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3222 of files as .eml work). Correctly handle very long lines in MIME
3226 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3228 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3229 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3230 a protocol version number mismatch like a decryption error
3231 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3234 *) Turn on RSA blinding by default in the default implementation
3235 to avoid a timing attack. Applications that don't want it can call
3236 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3237 They would be ill-advised to do so in most cases.
3238 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3240 *) Change RSA blinding code so that it works when the PRNG is not
3241 seeded (in this case, the secret RSA exponent is abused as
3242 an unpredictable seed -- if it is not unpredictable, there
3243 is no point in blinding anyway). Make RSA blinding thread-safe
3244 by remembering the creator's thread ID in rsa->blinding and
3245 having all other threads use local one-time blinding factors
3246 (this requires more computation than sharing rsa->blinding, but
3247 avoids excessive locking; and if an RSA object is not shared
3248 between threads, blinding will still be very fast).
3251 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3252 ENGINE as defaults for all supported algorithms irrespective of
3253 the 'flags' parameter. 'flags' is now honoured, so applications
3254 should make sure they are passing it correctly.
3257 *) Target "mingw" now allows native Windows code to be generated in
3258 the Cygwin environment as well as with the MinGW compiler.
3261 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3263 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3264 via timing by performing a MAC computation even if incorrrect
3265 block cipher padding has been found. This is a countermeasure
3266 against active attacks where the attacker has to distinguish
3267 between bad padding and a MAC verification error. (CVE-2003-0078)
3269 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3270 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3271 Martin Vuagnoux (EPFL, Ilion)]
3273 *) Make the no-err option work as intended. The intention with no-err
3274 is not to have the whole error stack handling routines removed from
3275 libcrypto, it's only intended to remove all the function name and
3276 reason texts, thereby removing some of the footprint that may not
3277 be interesting if those errors aren't displayed anyway.
3279 NOTE: it's still possible for any application or module to have it's
3280 own set of error texts inserted. The routines are there, just not
3281 used by default when no-err is given.
3284 *) Add support for FreeBSD on IA64.
3285 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3287 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3288 Kerberos function mit_des_cbc_cksum(). Before this change,
3289 the value returned by DES_cbc_cksum() was like the one from
3290 mit_des_cbc_cksum(), except the bytes were swapped.
3291 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3293 *) Allow an application to disable the automatic SSL chain building.
3294 Before this a rather primitive chain build was always performed in
3295 ssl3_output_cert_chain(): an application had no way to send the
3296 correct chain if the automatic operation produced an incorrect result.
3298 Now the chain builder is disabled if either:
3300 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3302 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3304 The reasoning behind this is that an application would not want the
3305 auto chain building to take place if extra chain certificates are
3306 present and it might also want a means of sending no additional
3307 certificates (for example the chain has two certificates and the
3311 *) Add the possibility to build without the ENGINE framework.
3312 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3314 *) Under Win32 gmtime() can return NULL: check return value in
3315 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3318 *) DSA routines: under certain error conditions uninitialized BN objects
3319 could be freed. Solution: make sure initialization is performed early
3320 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3321 Nils Larsch <nla@trustcenter.de> via PR#459)
3324 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3325 checked on reconnect on the client side, therefore session resumption
3326 could still fail with a "ssl session id is different" error. This
3327 behaviour is masked when SSL_OP_ALL is used due to
3328 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3329 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3330 followup to PR #377.
3333 *) IA-32 assembler support enhancements: unified ELF targets, support
3334 for SCO/Caldera platforms, fix for Cygwin shared build.
3337 *) Add support for FreeBSD on sparc64. As a consequence, support for
3338 FreeBSD on non-x86 processors is separate from x86 processors on
3339 the config script, much like the NetBSD support.
3340 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3342 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3344 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3347 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3348 code (06) was taken as the first octet of the session ID and the last
3349 octet was ignored consequently. As a result SSLv2 client side session
3350 caching could not have worked due to the session ID mismatch between
3352 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3356 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3357 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3361 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3362 seems that in spite of existing for more than a year, many application
3363 author have done nothing to provide the necessary callbacks, which
3364 means that this particular engine will not work properly anywhere.
3365 This is a very unfortunate situation which forces us, in the name
3366 of usability, to give the hw_ncipher.c a static lock, which is part
3368 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3369 appear in 0.9.8 or later. We EXPECT application authors to have
3370 dealt properly with this when 0.9.8 is released (unless we actually
3371 make such changes in the libcrypto locking code that changes will
3372 have to be made anyway).
3375 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3376 octets have been read, EOF or an error occurs. Without this change
3377 some truncated ASN1 structures will not produce an error.
3380 *) Disable Heimdal support, since it hasn't been fully implemented.
3381 Still give the possibility to force the use of Heimdal, but with
3382 warnings and a request that patches get sent to openssl-dev.
3385 *) Add the VC-CE target, introduce the WINCE sysname, and add
3386 INSTALL.WCE and appropriate conditionals to make it build.
3387 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3389 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3390 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3391 edit numbers of the version.
3392 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3394 *) Introduce safe string copy and catenation functions
3395 (BUF_strlcpy() and BUF_strlcat()).
3396 [Ben Laurie (CHATS) and Richard Levitte]
3398 *) Avoid using fixed-size buffers for one-line DNs.
3399 [Ben Laurie (CHATS)]
3401 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3402 resizing buffers containing secrets, and use where appropriate.
3403 [Ben Laurie (CHATS)]
3405 *) Avoid using fixed size buffers for configuration file location.
3406 [Ben Laurie (CHATS)]
3408 *) Avoid filename truncation for various CA files.
3409 [Ben Laurie (CHATS)]
3411 *) Use sizeof in preference to magic numbers.
3412 [Ben Laurie (CHATS)]
3414 *) Avoid filename truncation in cert requests.
3415 [Ben Laurie (CHATS)]
3417 *) Add assertions to check for (supposedly impossible) buffer
3419 [Ben Laurie (CHATS)]
3421 *) Don't cache truncated DNS entries in the local cache (this could
3422 potentially lead to a spoofing attack).
3423 [Ben Laurie (CHATS)]
3425 *) Fix various buffers to be large enough for hex/decimal
3426 representations in a platform independent manner.
3427 [Ben Laurie (CHATS)]
3429 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3430 resizing buffers containing secrets, and use where appropriate.
3431 [Ben Laurie (CHATS)]
3433 *) Add BIO_indent() to avoid much slightly worrying code to do
3435 [Ben Laurie (CHATS)]
3437 *) Convert sprintf()/BIO_puts() to BIO_printf().
3438 [Ben Laurie (CHATS)]
3440 *) buffer_gets() could terminate with the buffer only half
3442 [Ben Laurie (CHATS)]
3444 *) Add assertions to prevent user-supplied crypto functions from
3445 overflowing internal buffers by having large block sizes, etc.
3446 [Ben Laurie (CHATS)]
3448 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3450 [Ben Laurie (CHATS)]
3452 *) Eliminate unused copy of key in RC4.
3453 [Ben Laurie (CHATS)]
3455 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3456 [Ben Laurie (CHATS)]
3458 *) Fix off-by-one error in EGD path.
3459 [Ben Laurie (CHATS)]
3461 *) If RANDFILE path is too long, ignore instead of truncating.
3462 [Ben Laurie (CHATS)]
3464 *) Eliminate unused and incorrectly sized X.509 structure
3466 [Ben Laurie (CHATS)]
3468 *) Eliminate unused and dangerous function knumber().
3469 [Ben Laurie (CHATS)]
3471 *) Eliminate unused and dangerous structure, KSSL_ERR.
3472 [Ben Laurie (CHATS)]
3474 *) Protect against overlong session ID context length in an encoded
3475 session object. Since these are local, this does not appear to be
3477 [Ben Laurie (CHATS)]
3479 *) Change from security patch (see 0.9.6e below) that did not affect
3480 the 0.9.6 release series:
3482 Remote buffer overflow in SSL3 protocol - an attacker could
3483 supply an oversized master key in Kerberos-enabled versions.
3485 [Ben Laurie (CHATS)]
3487 *) Change the SSL kerb5 codes to match RFC 2712.
3490 *) Make -nameopt work fully for req and add -reqopt switch.
3491 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3493 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3494 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3496 *) Make sure tests can be performed even if the corresponding algorithms
3497 have been removed entirely. This was also the last step to make
3498 OpenSSL compilable with DJGPP under all reasonable conditions.
3499 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3501 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3502 to allow version independent disabling of normally unselected ciphers,
3503 which may be activated as a side-effect of selecting a single cipher.
3505 (E.g., cipher list string "RSA" enables ciphersuites that are left
3506 out of "ALL" because they do not provide symmetric encryption.
3507 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3508 [Lutz Jaenicke, Bodo Moeller]
3510 *) Add appropriate support for separate platform-dependent build
3511 directories. The recommended way to make a platform-dependent
3512 build directory is the following (tested on Linux), maybe with
3515 # Place yourself outside of the OpenSSL source tree. In
3516 # this example, the environment variable OPENSSL_SOURCE
3517 # is assumed to contain the absolute OpenSSL source directory.
3518 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3519 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3520 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3521 mkdir -p `dirname $F`
3522 ln -s $OPENSSL_SOURCE/$F $F
3525 To be absolutely sure not to disturb the source tree, a "make clean"
3526 is a good thing. If it isn't successfull, don't worry about it,
3527 it probably means the source directory is very clean.
3530 *) Make sure any ENGINE control commands make local copies of string
3531 pointers passed to them whenever necessary. Otherwise it is possible
3532 the caller may have overwritten (or deallocated) the original string
3533 data when a later ENGINE operation tries to use the stored values.
3534 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3536 *) Improve diagnostics in file reading and command-line digests.
3537 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3539 *) Add AES modes CFB and OFB to the object database. Correct an
3540 error in AES-CFB decryption.
3543 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3544 allows existing EVP_CIPHER_CTX structures to be reused after
3545 calling EVP_*Final(). This behaviour is used by encryption
3546 BIOs and some applications. This has the side effect that
3547 applications must explicitly clean up cipher contexts with
3548 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3551 *) Check the values of dna and dnb in bn_mul_recursive before calling
3552 bn_mul_comba (a non zero value means the a or b arrays do not contain
3553 n2 elements) and fallback to bn_mul_normal if either is not zero.
3556 *) Fix escaping of non-ASCII characters when using the -subj option
3557 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3560 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3561 form for "surname", serialNumber has no short form.
3562 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3563 therefore remove "mail" short name for "internet 7".
3564 The OID for unique identifiers in X509 certificates is
3565 x500UniqueIdentifier, not uniqueIdentifier.
3566 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3569 *) Add an "init" command to the ENGINE config module and auto initialize
3570 ENGINEs. Without any "init" command the ENGINE will be initialized
3571 after all ctrl commands have been executed on it. If init=1 the
3572 ENGINE is initailized at that point (ctrls before that point are run
3573 on the uninitialized ENGINE and after on the initialized one). If
3574 init=0 then the ENGINE will not be iniatialized at all.
3577 *) Fix the 'app_verify_callback' interface so that the user-defined
3578 argument is actually passed to the callback: In the
3579 SSL_CTX_set_cert_verify_callback() prototype, the callback
3580 declaration has been changed from
3583 int (*cb)(X509_STORE_CTX *,void *);
3584 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3585 i=s->ctx->app_verify_callback(&ctx)
3586 has been changed into
3587 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3589 To update applications using SSL_CTX_set_cert_verify_callback(),
3590 a dummy argument can be added to their callback functions.
3591 [D. K. Smetters <smetters@parc.xerox.com>]
3593 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3594 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3596 *) Add and OPENSSL_LOAD_CONF define which will cause
3597 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3598 This allows older applications to transparently support certain
3599 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3600 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3601 load the config file and OPENSSL_add_all_algorithms_conf() which will
3602 always load it have also been added.
3605 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3606 Adjust NIDs and EVP layer.
3607 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3609 *) Config modules support in openssl utility.
3611 Most commands now load modules from the config file,
3612 though in a few (such as version) this isn't done
3613 because it couldn't be used for anything.
3615 In the case of ca and req the config file used is
3616 the same as the utility itself: that is the -config
3617 command line option can be used to specify an
3621 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3622 use "openssl_conf" if filename is NULL use default openssl config file.
3625 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3626 config section name. Add a new flag to tolerate a missing config file
3627 and move code to CONF_modules_load_file().
3630 *) Support for crypto accelerator cards from Accelerated Encryption
3631 Processing, www.aep.ie. (Use engine 'aep')
3632 The support was copied from 0.9.6c [engine] and adapted/corrected
3633 to work with the new engine framework.
3634 [AEP Inc. and Richard Levitte]
3636 *) Support for SureWare crypto accelerator cards from Baltimore
3637 Technologies. (Use engine 'sureware')
3638 The support was copied from 0.9.6c [engine] and adapted
3639 to work with the new engine framework.
3642 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3643 make the newer ENGINE framework commands for the CHIL engine work.
3644 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3646 *) Make it possible to produce shared libraries on ReliantUNIX.
3647 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3649 *) Add the configuration target debug-linux-ppro.
3650 Make 'openssl rsa' use the general key loading routines
3651 implemented in apps.c, and make those routines able to
3652 handle the key format FORMAT_NETSCAPE and the variant
3654 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3656 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3657 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3659 *) Add -keyform to rsautl, and document -engine.
3660 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3662 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3663 BIO_R_NO_SUCH_FILE error code rather than the generic
3664 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3667 *) Add new functions
3669 ERR_peek_last_error_line
3670 ERR_peek_last_error_line_data.
3671 These are similar to
3674 ERR_peek_error_line_data,
3675 but report on the latest error recorded rather than the first one
3676 still in the error queue.
3677 [Ben Laurie, Bodo Moeller]
3679 *) default_algorithms option in ENGINE config module. This allows things
3681 default_algorithms = ALL
3682 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3685 *) Prelminary ENGINE config module.
3688 *) New experimental application configuration code.
3691 *) Change the AES code to follow the same name structure as all other
3692 symmetric ciphers, and behave the same way. Move everything to
3693 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3694 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3696 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3697 [Ben Laurie and Theo de Raadt]
3699 *) Add option to output public keys in req command.
3700 [Massimiliano Pala madwolf@openca.org]
3702 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3703 (up to about 10% better than before for P-192 and P-224).
3706 *) New functions/macros
3708 SSL_CTX_set_msg_callback(ctx, cb)
3709 SSL_CTX_set_msg_callback_arg(ctx, arg)
3710 SSL_set_msg_callback(ssl, cb)
3711 SSL_set_msg_callback_arg(ssl, arg)
3713 to request calling a callback function
3715 void cb(int write_p, int version, int content_type,
3716 const void *buf, size_t len, SSL *ssl, void *arg)
3718 whenever a protocol message has been completely received
3719 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3720 protocol version according to which the SSL library interprets
3721 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3722 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3723 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3724 specification (change_cipher_spec(20), alert(21), handshake(22)).
3725 'buf' and 'len' point to the actual message, 'ssl' to the
3726 SSL object, and 'arg' is the application-defined value set by
3727 SSL[_CTX]_set_msg_callback_arg().
3729 'openssl s_client' and 'openssl s_server' have new '-msg' options
3730 to enable a callback that displays all protocol messages.
3733 *) Change the shared library support so shared libraries are built as
3734 soon as the corresponding static library is finished, and thereby get
3735 openssl and the test programs linked against the shared library.
3736 This still only happens when the keyword "shard" has been given to
3737 the configuration scripts.
3739 NOTE: shared library support is still an experimental thing, and
3740 backward binary compatibility is still not guaranteed.
3741 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3743 *) Add support for Subject Information Access extension.
3744 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3746 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3747 additional bytes when new memory had to be allocated, not just
3748 when reusing an existing buffer.
3751 *) New command line and configuration option 'utf8' for the req command.
3752 This allows field values to be specified as UTF8 strings.
3755 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3756 runs for the former and machine-readable output for the latter.
3759 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3760 of the e-mail address in the DN (i.e., it will go into a certificate
3761 extension only). The new configuration file option 'email_in_dn = no'
3762 has the same effect.
3763 [Massimiliano Pala madwolf@openca.org]
3765 *) Change all functions with names starting with des_ to be starting
3766 with DES_ instead. Add wrappers that are compatible with libdes,
3767 but are named _ossl_old_des_*. Finally, add macros that map the
3768 des_* symbols to the corresponding _ossl_old_des_* if libdes
3769 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3770 desired, the des_* symbols will be mapped to DES_*, with one
3773 Since we provide two compatibility mappings, the user needs to
3774 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3775 compatibility is desired. The default (i.e., when that macro
3776 isn't defined) is OpenSSL 0.9.6c compatibility.
3778 There are also macros that enable and disable the support of old
3779 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3780 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3781 are defined, the default will apply: to support the old des routines.
3783 In either case, one must include openssl/des.h to get the correct
3784 definitions. Do not try to just include openssl/des_old.h, that
3787 NOTE: This is a major break of an old API into a new one. Software
3788 authors are encouraged to switch to the DES_ style functions. Some
3789 time in the future, des_old.h and the libdes compatibility functions
3790 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3791 default), and then completely removed.
3794 *) Test for certificates which contain unsupported critical extensions.
3795 If such a certificate is found during a verify operation it is
3796 rejected by default: this behaviour can be overridden by either
3797 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3798 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3799 X509_supported_extension() has also been added which returns 1 if a
3800 particular extension is supported.
3803 *) Modify the behaviour of EVP cipher functions in similar way to digests
3804 to retain compatibility with existing code.
3807 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3808 compatibility with existing code. In particular the 'ctx' parameter does
3809 not have to be to be initialized before the call to EVP_DigestInit() and
3810 it is tidied up after a call to EVP_DigestFinal(). New function
3811 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3812 EVP_MD_CTX_copy() changed to not require the destination to be
3813 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3814 requires the destination to be valid.
3816 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3817 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3820 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3821 so that complete 'Handshake' protocol structures are kept in memory
3822 instead of overwriting 'msg_type' and 'length' with 'body' data.
3825 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3826 [Massimo Santin via Richard Levitte]
3828 *) Major restructuring to the underlying ENGINE code. This includes
3829 reduction of linker bloat, separation of pure "ENGINE" manipulation
3830 (initialisation, etc) from functionality dealing with implementations
3831 of specific crypto iterfaces. This change also introduces integrated
3832 support for symmetric ciphers and digest implementations - so ENGINEs
3833 can now accelerate these by providing EVP_CIPHER and EVP_MD
3834 implementations of their own. This is detailed in crypto/engine/README
3835 as it couldn't be adequately described here. However, there are a few
3836 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3837 were changed in the original introduction of ENGINE code have now
3838 reverted back - the hooking from this code to ENGINE is now a good
3839 deal more passive and at run-time, operations deal directly with
3840 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3841 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3842 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3843 they were not being used by the framework as there is no concept of a
3844 BIGNUM_METHOD and they could not be generalised to the new
3845 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3846 ENGINE_cpy() has been removed as it cannot be consistently defined in
3850 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3853 *) Change mkdef.pl to sort symbols that get the same entry number,
3854 and make sure the automatically generated functions ERR_load_*
3855 become part of libeay.num as well.
3858 *) New function SSL_renegotiate_pending(). This returns true once
3859 renegotiation has been requested (either SSL_renegotiate() call
3860 or HelloRequest/ClientHello receveived from the peer) and becomes
3861 false once a handshake has been completed.
3862 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3863 sends a HelloRequest, but does not ensure that a handshake takes
3864 place. SSL_renegotiate_pending() is useful for checking if the
3865 client has followed the request.)
3868 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3869 By default, clients may request session resumption even during
3870 renegotiation (if session ID contexts permit); with this option,
3871 session resumption is possible only in the first handshake.
3873 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3874 more bits available for options that should not be part of
3875 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3878 *) Add some demos for certificate and certificate request creation.
3881 *) Make maximum certificate chain size accepted from the peer application
3882 settable (SSL*_get/set_max_cert_list()), as proposed by
3883 "Douglas E. Engert" <deengert@anl.gov>.
3886 *) Add support for shared libraries for Unixware-7
3887 (Boyd Lynn Gerber <gerberb@zenez.com>).
3890 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3891 be done prior to destruction. Use this to unload error strings from
3892 ENGINEs that load their own error strings. NB: This adds two new API
3893 functions to "get" and "set" this destroy handler in an ENGINE.
3896 *) Alter all existing ENGINE implementations (except "openssl" and
3897 "openbsd") to dynamically instantiate their own error strings. This
3898 makes them more flexible to be built both as statically-linked ENGINEs
3899 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3900 Also, add stub code to each that makes building them as self-contained
3901 shared-libraries easier (see README.ENGINE).
3904 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3905 implementations into applications that are completely implemented in
3906 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3907 commands that can be used to configure what shared-library to load and
3908 to control aspects of the way it is handled. Also, made an update to
3909 the README.ENGINE file that brings its information up-to-date and
3910 provides some information and instructions on the "dynamic" ENGINE
3911 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3914 *) Make it possible to unload ranges of ERR strings with a new
3915 "ERR_unload_strings" function.
3918 *) Add a copy() function to EVP_MD.
3921 *) Make EVP_MD routines take a context pointer instead of just the
3922 md_data void pointer.
3925 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3926 that the digest can only process a single chunk of data
3927 (typically because it is provided by a piece of
3928 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3929 is only going to provide a single chunk of data, and hence the
3930 framework needn't accumulate the data for oneshot drivers.
3933 *) As with "ERR", make it possible to replace the underlying "ex_data"
3934 functions. This change also alters the storage and management of global
3935 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3936 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3937 index counters. The API functions that use this state have been changed
3938 to take a "class_index" rather than pointers to the class's local STACK
3939 and counter, and there is now an API function to dynamically create new
3940 classes. This centralisation allows us to (a) plug a lot of the
3941 thread-safety problems that existed, and (b) makes it possible to clean
3942 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3943 such data would previously have always leaked in application code and
3944 workarounds were in place to make the memory debugging turn a blind eye
3945 to it. Application code that doesn't use this new function will still
3946 leak as before, but their memory debugging output will announce it now
3947 rather than letting it slide.
3949 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3950 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3951 has a return value to indicate success or failure.
3954 *) Make it possible to replace the underlying "ERR" functions such that the
3955 global state (2 LHASH tables and 2 locks) is only used by the "default"
3956 implementation. This change also adds two functions to "get" and "set"
3957 the implementation prior to it being automatically set the first time
3958 any other ERR function takes place. Ie. an application can call "get",
3959 pass the return value to a module it has just loaded, and that module
3960 can call its own "set" function using that value. This means the
3961 module's "ERR" operations will use (and modify) the error state in the
3962 application and not in its own statically linked copy of OpenSSL code.
3965 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3966 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3967 the operation, and provides a more encapsulated way for external code
3968 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3969 to use these functions rather than manually incrementing the counts.
3971 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3974 *) Add EVP test program.
3977 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3980 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3981 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3982 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3983 These allow a CRL to be built without having to access X509_CRL fields
3984 directly. Modify 'ca' application to use new functions.
3987 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3988 bug workarounds. Rollback attack detection is a security feature.
3989 The problem will only arise on OpenSSL servers when TLSv1 is not
3990 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3991 Software authors not wanting to support TLSv1 will have special reasons
3992 for their choice and can explicitly enable this option.
3993 [Bodo Moeller, Lutz Jaenicke]
3995 *) Rationalise EVP so it can be extended: don't include a union of
3996 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3997 (similar to those existing for EVP_CIPHER_CTX).
4002 EVP_MD_CTX_init(&md); /* new function call */
4003 EVP_DigestInit(&md, EVP_sha1());
4004 EVP_DigestUpdate(&md, in, len);
4005 EVP_DigestFinal(&md, out, NULL);
4006 EVP_MD_CTX_cleanup(&md); /* new function call */
4010 *) Make DES key schedule conform to the usual scheme, as well as
4011 correcting its structure. This means that calls to DES functions
4012 now have to pass a pointer to a des_key_schedule instead of a
4013 plain des_key_schedule (which was actually always a pointer
4016 des_key_schedule ks;
4018 des_set_key_checked(..., &ks);
4019 des_ncbc_encrypt(..., &ks, ...);
4021 (Note that a later change renames 'des_...' into 'DES_...'.)
4024 *) Initial reduction of linker bloat: the use of some functions, such as
4025 PEM causes large amounts of unused functions to be linked in due to
4026 poor organisation. For example pem_all.c contains every PEM function
4027 which has a knock on effect of linking in large amounts of (unused)
4028 ASN1 code. Grouping together similar functions and splitting unrelated
4029 functions prevents this.
4032 *) Cleanup of EVP macros.
4035 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
4036 correct _ecb suffix.
4039 *) Add initial OCSP responder support to ocsp application. The
4040 revocation information is handled using the text based index
4041 use by the ca application. The responder can either handle
4042 requests generated internally, supplied in files (for example
4043 via a CGI script) or using an internal minimal server.
4046 *) Add configuration choices to get zlib compression for TLS.
4049 *) Changes to Kerberos SSL for RFC 2712 compliance:
4050 1. Implemented real KerberosWrapper, instead of just using
4051 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
4052 2. Implemented optional authenticator field of KerberosWrapper.
4054 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
4055 and authenticator structs; see crypto/krb5/.
4057 Generalized Kerberos calls to support multiple Kerberos libraries.
4058 [Vern Staats <staatsvr@asc.hpc.mil>,
4059 Jeffrey Altman <jaltman@columbia.edu>
4060 via Richard Levitte]
4062 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
4063 already does with RSA. testdsa.h now has 'priv_key/pub_key'
4064 values for each of the key sizes rather than having just
4065 parameters (and 'speed' generating keys each time).
4068 *) Speed up EVP routines.
4071 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
4072 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
4073 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
4074 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
4076 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
4077 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
4078 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
4081 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
4083 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
4086 *) Added the OS2-EMX target.
4087 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
4089 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
4090 to support NCONF routines in extension code. New function CONF_set_nconf()
4091 to allow functions which take an NCONF to also handle the old LHASH
4092 structure: this means that the old CONF compatible routines can be
4093 retained (in particular wrt extensions) without having to duplicate the
4094 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
4097 *) Enhance the general user interface with mechanisms for inner control
4098 and with possibilities to have yes/no kind of prompts.
4101 *) Change all calls to low level digest routines in the library and
4102 applications to use EVP. Add missing calls to HMAC_cleanup() and
4103 don't assume HMAC_CTX can be copied using memcpy().
4104 [Verdon Walker <VWalker@novell.com>, Steve Henson]
4106 *) Add the possibility to control engines through control names but with
4107 arbitrary arguments instead of just a string.
4108 Change the key loaders to take a UI_METHOD instead of a callback
4109 function pointer. NOTE: this breaks binary compatibility with earlier
4110 versions of OpenSSL [engine].
4111 Adapt the nCipher code for these new conditions and add a card insertion
4115 *) Enhance the general user interface with mechanisms to better support
4116 dialog box interfaces, application-defined prompts, the possibility
4117 to use defaults (for example default passwords from somewhere else)
4118 and interrupts/cancellations.
4121 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4122 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4125 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4126 tidy up some unnecessarily weird code in 'sk_new()').
4127 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4129 *) Change the key loading routines for ENGINEs to use the same kind
4130 callback (pem_password_cb) as all other routines that need this
4134 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4135 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4136 than this minimum value is recommended.
4139 *) New random seeder for OpenVMS, using the system process statistics
4140 that are easily reachable.
4143 *) Windows apparently can't transparently handle global
4144 variables defined in DLLs. Initialisations such as:
4146 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4148 wont compile. This is used by the any applications that need to
4149 declare their own ASN1 modules. This was fixed by adding the option
4150 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4151 needed for static libraries under Win32.
4154 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4155 setting of purpose and trust fields. New X509_STORE trust and
4156 purpose functions and tidy up setting in other SSL functions.
4159 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4160 structure. These are inherited by X509_STORE_CTX when it is
4161 initialised. This allows various defaults to be set in the
4162 X509_STORE structure (such as flags for CRL checking and custom
4163 purpose or trust settings) for functions which only use X509_STORE_CTX
4164 internally such as S/MIME.
4166 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4167 trust settings if they are not set in X509_STORE. This allows X509_STORE
4168 purposes and trust (in S/MIME for example) to override any set by default.
4170 Add command line options for CRL checking to smime, s_client and s_server
4174 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4175 are set then the CRL is looked up in the X509_STORE structure and
4176 its validity and signature checked, then if the certificate is found
4177 in the CRL the verify fails with a revoked error.
4179 Various new CRL related callbacks added to X509_STORE_CTX structure.
4181 Command line options added to 'verify' application to support this.
4183 This needs some additional work, such as being able to handle multiple
4184 CRLs with different times, extension based lookup (rather than just
4185 by subject name) and ultimately more complete V2 CRL extension
4189 *) Add a general user interface API (crypto/ui/). This is designed
4190 to replace things like des_read_password and friends (backward
4191 compatibility functions using this new API are provided).
4192 The purpose is to remove prompting functions from the DES code
4193 section as well as provide for prompting through dialog boxes in
4194 a window system and the like.
4197 *) Add "ex_data" support to ENGINE so implementations can add state at a
4198 per-structure level rather than having to store it globally.
4201 *) Make it possible for ENGINE structures to be copied when retrieved by
4202 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4203 This causes the "original" ENGINE structure to act like a template,
4204 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4205 operational state can be localised to each ENGINE structure, despite the
4206 fact they all share the same "methods". New ENGINE structures returned in
4207 this case have no functional references and the return value is the single
4208 structural reference. This matches the single structural reference returned
4209 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4213 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4214 needs to match any other type at all we need to manually clear the
4218 *) Changes to the "openssl engine" utility to include;
4219 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4220 about an ENGINE's available control commands.
4221 - executing control commands from command line arguments using the
4222 '-pre' and '-post' switches. '-post' is only used if '-t' is
4223 specified and the ENGINE is successfully initialised. The syntax for
4224 the individual commands are colon-separated, for example;
4225 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4228 *) New dynamic control command support for ENGINEs. ENGINEs can now
4229 declare their own commands (numbers), names (strings), descriptions,
4230 and input types for run-time discovery by calling applications. A
4231 subset of these commands are implicitly classed as "executable"
4232 depending on their input type, and only these can be invoked through
4233 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4234 can be based on user input, config files, etc). The distinction is
4235 that "executable" commands cannot return anything other than a boolean
4236 result and can only support numeric or string input, whereas some
4237 discoverable commands may only be for direct use through
4238 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4239 pointers, or other custom uses. The "executable" commands are to
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