5 Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
7 *) Improve forward-security support: add functions
9 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
10 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
12 for use by SSL/TLS servers; the callback function will be called whenever a
13 new session is created, and gets to decide whether the session may be
14 cached to make it resumable (return 0) or not (return 1). (As by the
15 SSL/TLS protocol specifications, the session_id sent by the server will be
16 empty to indicate that the session is not resumable; also, the server will
17 not generate RFC 4507 (RFC 5077) session tickets.)
19 A simple reasonable callback implementation is to return is_forward_secure.
20 This parameter will be set to 1 or 0 depending on the ciphersuite selected
21 by the SSL/TLS server library, indicating whether it can provide forward
23 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
25 *) Add Next Protocol Negotiation,
26 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
27 disabled with a no-npn flag to config or Configure. Code donated
29 [Adam Langley <agl@google.com> and Ben Laurie]
31 *) Use type ossl_ssize_t instad of ssize_t which isn't available on
32 all platforms. Move ssize_t definition from e_os.h to the public
33 header file e_os2.h as it now appears in public header file cms.h
36 *) New function OPENSSL_gmtime_diff to find the difference in days
37 and seconds between two tm structures. This will be used to provide
38 additional functionality for ASN1_TIME.
41 *) New -sigopt option to the ca, req and x509 utilities. Additional
42 signature parameters can be passed using this option and in
46 *) Add RSA PSS signing function. This will generate and set the
47 appropriate AlgorithmIdentifiers for PSS based on those in the
48 corresponding EVP_MD_CTX structure. No application support yet.
51 *) Support for companion algorithm specific ASN1 signing routines.
52 New function ASN1_item_sign_ctx() signs a pre-initialised
53 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
54 the appropriate parameters.
57 *) Add new algorithm specific ASN1 verification initialisation function
58 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
59 handling will be the same no matter what EVP_PKEY_METHOD is used.
60 Add a PSS handler to support verification of PSS signatures: checked
61 against a number of sample certificates.
64 *) Add signature printing for PSS. Add PSS OIDs.
65 [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
67 *) Add algorithm specific signature printing. An individual ASN1 method
68 can now print out signatures instead of the standard hex dump.
70 More complex signatures (e.g. PSS) can print out more meaningful
71 information. Include DSA version that prints out the signature
75 *) Add -trusted_first option which attempts to find certificates in the
76 trusted store even if an untrusted chain is also supplied.
79 *) Initial experimental support for explicitly trusted non-root CAs.
80 OpenSSL still tries to build a complete chain to a root but if an
81 intermediate CA has a trust setting included that is used. The first
82 setting is used: whether to trust or reject.
85 *) New -verify_name option in command line utilities to set verification
89 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
90 Add CMAC pkey methods.
93 *) Experiemental regnegotiation in s_server -www mode. If the client
94 browses /reneg connection is renegotiated. If /renegcert it is
95 renegotiated requesting a certificate.
98 *) Add an "external" session cache for debugging purposes to s_server. This
99 should help trace issues which normally are only apparent in deployed
100 multi-process servers.
103 *) Experiemental password based recipient info support for CMS library:
104 implementing RFC3211.
107 *) Split password based encryption into PBES2 and PBKDF2 functions. This
108 neatly separates the code into cipher and PBE sections and is required
109 for some algorithms that split PBES2 into separate pieces (such as
113 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
114 return value is ignored. NB. The functions RAND_add(), RAND_seed(),
115 BIO_set_cipher() and some obscure PEM functions were changed so they
116 can now return an error. The RAND changes required a change to the
117 RAND_METHOD structure.
120 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
121 a gcc attribute to warn if the result of a function is ignored. This
122 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
123 whose return value is often ignored.
126 Changes between 1.0.0b and 1.0.1 [xx XXX xxxx]
128 *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
129 elliptic curve NIST-P224 with constant-time single point multiplication on
130 typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
131 (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
132 flexible implementations).
134 The implementation requires support for the nonstandard type __uint128_t,
135 and so is disabled by default. To include this in your build of OpenSSL,
136 use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
137 and run "make depend" (or "make update").
138 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
140 *) Permit abbreviated handshakes when renegotiating using the function
141 SSL_renegotiate_abbreviated().
142 [Robin Seggelmann <seggelmann@fh-muenster.de>]
144 *) Add call to ENGINE_register_all_complete() to
145 ENGINE_load_builtin_engines(), so some implementations get used
146 automatically instead of needing explicit application support.
149 *) Add support for TLS key exporter as described in RFC5705.
150 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
152 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
153 a few changes are required:
155 Add SSL_OP_NO_TLSv1_1 flag.
157 Update version checking logic to handle version 1.1.
158 Add explicit IV handling (ported from DTLS code).
159 Add command line options to s_client/s_server.
162 Changes between 1.0.0a and 1.0.0b [xx XXX xxxx]
164 *) Fix WIN32 build system to correctly link an ENGINE directory into
168 Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
170 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
172 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
174 Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
176 *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
179 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
180 context. The operation can be customised via the ctrl mechanism in
181 case ENGINEs want to include additional functionality.
184 *) Tolerate yet another broken PKCS#8 key format: private key value negative.
187 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
188 output hashes compatible with older versions of OpenSSL.
189 [Willy Weisz <weisz@vcpc.univie.ac.at>]
191 *) Fix compression algorithm handling: if resuming a session use the
192 compression algorithm of the resumed session instead of determining
193 it from client hello again. Don't allow server to change algorithm.
196 *) Add load_crls() function to apps tidying load_certs() too. Add option
197 to verify utility to allow additional CRLs to be included.
200 *) Update OCSP request code to permit adding custom headers to the request:
201 some responders need this.
204 *) The function EVP_PKEY_sign() returns <=0 on error: check return code
206 [Julia Lawall <julia@diku.dk>]
208 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
209 needlessly dereferenced structures, used obsolete functions and
210 didn't handle all updated verify codes correctly.
213 *) Disable MD2 in the default configuration.
216 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
217 indicate the initial BIO being pushed or popped. This makes it possible
218 to determine whether the BIO is the one explicitly called or as a result
219 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
220 it handles reference counts correctly and doesn't zero out the I/O bio
221 when it is not being explicitly popped. WARNING: applications which
222 included workarounds for the old buggy behaviour will need to be modified
223 or they could free up already freed BIOs.
226 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
227 renaming to all platforms (within the 0.9.8 branch, this was
228 done conditionally on Netware platforms to avoid a name clash).
229 [Guenter <lists@gknw.net>]
231 *) Add ECDHE and PSK support to DTLS.
232 [Michael Tuexen <tuexen@fh-muenster.de>]
234 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
238 *) Add "missing" function EVP_MD_flags() (without this the only way to
239 retrieve a digest flags is by accessing the structure directly. Update
240 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
241 or cipher is registered as in the "from" argument. Print out all
242 registered digests in the dgst usage message instead of manually
243 attempting to work them out.
246 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
247 this allows the use of compression and extensions. Change default cipher
248 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
249 by default unless an application cipher string requests it.
252 *) Alter match criteria in PKCS12_parse(). It used to try to use local
253 key ids to find matching certificates and keys but some PKCS#12 files
254 don't follow the (somewhat unwritten) rules and this strategy fails.
255 Now just gather all certificates together and the first private key
256 then look for the first certificate that matches the key.
259 *) Support use of registered digest and cipher names for dgst and cipher
260 commands instead of having to add each one as a special case. So now
267 openssl dgst -sha256 foo
269 and this works for ENGINE based algorithms too.
273 *) Update Gost ENGINE to support parameter files.
274 [Victor B. Wagner <vitus@cryptocom.ru>]
276 *) Support GeneralizedTime in ca utility.
277 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
279 *) Enhance the hash format used for certificate directory links. The new
280 form uses the canonical encoding (meaning equivalent names will work
281 even if they aren't identical) and uses SHA1 instead of MD5. This form
282 is incompatible with the older format and as a result c_rehash should
283 be used to rebuild symbolic links.
286 *) Make PKCS#8 the default write format for private keys, replacing the
287 traditional format. This form is standardised, more secure and doesn't
288 include an implicit MD5 dependency.
291 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
292 committed to OpenSSL should pass this lot as a minimum.
295 *) Add session ticket override functionality for use by EAP-FAST.
296 [Jouni Malinen <j@w1.fi>]
298 *) Modify HMAC functions to return a value. Since these can be implemented
299 in an ENGINE errors can occur.
302 *) Type-checked OBJ_bsearch_ex.
305 *) Type-checked OBJ_bsearch. Also some constification necessitated
306 by type-checking. Still to come: TXT_DB, bsearch(?),
307 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
311 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
312 seconds to a tm structure directly, instead of going through OS
313 specific date routines. This avoids any issues with OS routines such
314 as the year 2038 bug. New *_adj() functions for ASN1 time structures
315 and X509_time_adj_ex() to cover the extended range. The existing
316 X509_time_adj() is still usable and will no longer have any date issues.
319 *) Delta CRL support. New use deltas option which will attempt to locate
320 and search any appropriate delta CRLs available.
322 This work was sponsored by Google.
325 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
326 code and add additional score elements. Validate alternate CRL paths
327 as part of the CRL checking and indicate a new error "CRL path validation
328 error" in this case. Applications wanting additional details can use
329 the verify callback and check the new "parent" field. If this is not
330 NULL CRL path validation is taking place. Existing applications wont
331 see this because it requires extended CRL support which is off by
334 This work was sponsored by Google.
337 *) Support for freshest CRL extension.
339 This work was sponsored by Google.
342 *) Initial indirect CRL support. Currently only supported in the CRLs
343 passed directly and not via lookup. Process certificate issuer
344 CRL entry extension and lookup CRL entries by bother issuer name
345 and serial number. Check and process CRL issuer entry in IDP extension.
347 This work was sponsored by Google.
350 *) Add support for distinct certificate and CRL paths. The CRL issuer
351 certificate is validated separately in this case. Only enabled if
352 an extended CRL support flag is set: this flag will enable additional
353 CRL functionality in future.
355 This work was sponsored by Google.
358 *) Add support for policy mappings extension.
360 This work was sponsored by Google.
363 *) Fixes to pathlength constraint, self issued certificate handling,
364 policy processing to align with RFC3280 and PKITS tests.
366 This work was sponsored by Google.
369 *) Support for name constraints certificate extension. DN, email, DNS
370 and URI types are currently supported.
372 This work was sponsored by Google.
375 *) To cater for systems that provide a pointer-based thread ID rather
376 than numeric, deprecate the current numeric thread ID mechanism and
377 replace it with a structure and associated callback type. This
378 mechanism allows a numeric "hash" to be extracted from a thread ID in
379 either case, and on platforms where pointers are larger than 'long',
380 mixing is done to help ensure the numeric 'hash' is usable even if it
381 can't be guaranteed unique. The default mechanism is to use "&errno"
382 as a pointer-based thread ID to distinguish between threads.
384 Applications that want to provide their own thread IDs should now use
385 CRYPTO_THREADID_set_callback() to register a callback that will call
386 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
388 Note that ERR_remove_state() is now deprecated, because it is tied
389 to the assumption that thread IDs are numeric. ERR_remove_state(0)
390 to free the current thread's error state should be replaced by
391 ERR_remove_thread_state(NULL).
393 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
394 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
395 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
396 application was previously providing a numeric thread callback that
397 was inappropriate for distinguishing threads, then uniqueness might
398 have been obtained with &errno that happened immediately in the
399 intermediate development versions of OpenSSL; this is no longer the
400 case, the numeric thread callback will now override the automatic use
402 [Geoff Thorpe, with help from Bodo Moeller]
404 *) Initial support for different CRL issuing certificates. This covers a
405 simple case where the self issued certificates in the chain exist and
406 the real CRL issuer is higher in the existing chain.
408 This work was sponsored by Google.
411 *) Removed effectively defunct crypto/store from the build.
414 *) Revamp of STACK to provide stronger type-checking. Still to come:
415 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
416 ASN1_STRING, CONF_VALUE.
419 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
420 RAM on SSL connections. This option can save about 34k per idle SSL.
423 *) Revamp of LHASH to provide stronger type-checking. Still to come:
424 STACK, TXT_DB, bsearch, qsort.
427 *) Initial support for Cryptographic Message Syntax (aka CMS) based
428 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
429 support for data, signedData, compressedData, digestedData and
430 encryptedData, envelopedData types included. Scripts to check against
431 RFC4134 examples draft and interop and consistency checks of many
432 content types and variants.
435 *) Add options to enc utility to support use of zlib compression BIO.
438 *) Extend mk1mf to support importing of options and assembly language
439 files from Configure script, currently only included in VC-WIN32.
440 The assembly language rules can now optionally generate the source
441 files from the associated perl scripts.
444 *) Implement remaining functionality needed to support GOST ciphersuites.
445 Interop testing has been performed using CryptoPro implementations.
446 [Victor B. Wagner <vitus@cryptocom.ru>]
448 *) s390x assembler pack.
451 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
455 *) Implement Opaque PRF Input TLS extension as specified in
456 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
457 official specification yet and no extension type assignment by
458 IANA exists, this extension (for now) will have to be explicitly
459 enabled when building OpenSSL by providing the extension number
460 to use. For example, specify an option
462 -DTLSEXT_TYPE_opaque_prf_input=0x9527
464 to the "config" or "Configure" script to enable the extension,
465 assuming extension number 0x9527 (which is a completely arbitrary
466 and unofficial assignment based on the MD5 hash of the Internet
467 Draft). Note that by doing so, you potentially lose
468 interoperability with other TLS implementations since these might
469 be using the same extension number for other purposes.
471 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
472 opaque PRF input value to use in the handshake. This will create
473 an interal copy of the length-'len' string at 'src', and will
474 return non-zero for success.
476 To get more control and flexibility, provide a callback function
479 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
480 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
484 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
487 Callback function 'cb' will be called in handshakes, and is
488 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
489 Argument 'arg' is for application purposes (the value as given to
490 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
491 be provided to the callback function). The callback function
492 has to return non-zero to report success: usually 1 to use opaque
493 PRF input just if possible, or 2 to enforce use of the opaque PRF
494 input. In the latter case, the library will abort the handshake
495 if opaque PRF input is not successfully negotiated.
497 Arguments 'peerinput' and 'len' given to the callback function
498 will always be NULL and 0 in the case of a client. A server will
499 see the client's opaque PRF input through these variables if
500 available (NULL and 0 otherwise). Note that if the server
501 provides an opaque PRF input, the length must be the same as the
502 length of the client's opaque PRF input.
504 Note that the callback function will only be called when creating
505 a new session (session resumption can resume whatever was
506 previously negotiated), and will not be called in SSL 2.0
507 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
508 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
509 for applications that need to enforce opaque PRF input.
513 *) Update ssl code to support digests other than SHA1+MD5 for handshake
516 [Victor B. Wagner <vitus@cryptocom.ru>]
518 *) Add RFC4507 support to OpenSSL. This includes the corrections in
519 RFC4507bis. The encrypted ticket format is an encrypted encoded
520 SSL_SESSION structure, that way new session features are automatically
523 If a client application caches session in an SSL_SESSION structure
524 support is transparent because tickets are now stored in the encoded
527 The SSL_CTX structure automatically generates keys for ticket
528 protection in servers so again support should be possible
529 with no application modification.
531 If a client or server wishes to disable RFC4507 support then the option
532 SSL_OP_NO_TICKET can be set.
534 Add a TLS extension debugging callback to allow the contents of any client
535 or server extensions to be examined.
537 This work was sponsored by Google.
540 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
541 OpenSSL should now compile cleanly on gcc 4.2
542 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
544 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
545 support including streaming MAC support: this is required for GOST
547 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
549 *) Add option -stream to use PKCS#7 streaming in smime utility. New
550 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
551 to output in BER and PEM format.
554 *) Experimental support for use of HMAC via EVP_PKEY interface. This
555 allows HMAC to be handled via the EVP_DigestSign*() interface. The
556 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
557 ENGINE support for HMAC keys which are unextractable. New -mac and
558 -macopt options to dgst utility.
561 *) New option -sigopt to dgst utility. Update dgst to use
562 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
563 alternative signing paramaters such as X9.31 or PSS in the dgst
567 *) Change ssl_cipher_apply_rule(), the internal function that does
568 the work each time a ciphersuite string requests enabling
569 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
570 removing ("!foo+bar") a class of ciphersuites: Now it maintains
571 the order of disabled ciphersuites such that those ciphersuites
572 that most recently went from enabled to disabled not only stay
573 in order with respect to each other, but also have higher priority
574 than other disabled ciphersuites the next time ciphersuites are
577 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
578 the same ciphersuites as with "HIGH" alone, but in a specific
579 order where the PSK ciphersuites come first (since they are the
580 most recently disabled ciphersuites when "HIGH" is parsed).
582 Also, change ssl_create_cipher_list() (using this new
583 funcionality) such that between otherwise identical
584 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
588 *) Change ssl_create_cipher_list() so that it automatically
589 arranges the ciphersuites in reasonable order before starting
590 to process the rule string. Thus, the definition for "DEFAULT"
591 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
592 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
593 This makes it much easier to arrive at a reasonable default order
594 in applications for which anonymous ciphers are OK (meaning
595 that you can't actually use DEFAULT).
596 [Bodo Moeller; suggested by Victor Duchovni]
598 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
599 processing) into multiple integers instead of setting
600 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
601 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
602 (These masks as well as the individual bit definitions are hidden
603 away into the non-exported interface ssl/ssl_locl.h, so this
604 change to the definition of the SSL_CIPHER structure shouldn't
605 affect applications.) This give us more bits for each of these
606 categories, so there is no longer a need to coagulate AES128 and
607 AES256 into a single algorithm bit, and to coagulate Camellia128
608 and Camellia256 into a single algorithm bit, which has led to all
611 Thus, among other things, the kludge introduced in 0.9.7m and
612 0.9.8e for masking out AES256 independently of AES128 or masking
613 out Camellia256 independently of AES256 is not needed here in 0.9.9.
615 With the change, we also introduce new ciphersuite aliases that
616 so far were missing: "AES128", "AES256", "CAMELLIA128", and
620 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
621 Use the leftmost N bytes of the signature input if the input is
622 larger than the prime q (with N being the size in bytes of q).
625 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
626 it yet and it is largely untested.
629 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
632 *) Initial incomplete changes to avoid need for function casts in OpenSSL
633 some compilers (gcc 4.2 and later) reject their use. Safestack is
634 reimplemented. Update ASN1 to avoid use of legacy functions.
637 *) Win32/64 targets are linked with Winsock2.
640 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
641 to external functions. This can be used to increase CRL handling
642 efficiency especially when CRLs are very large by (for example) storing
643 the CRL revoked certificates in a database.
646 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
647 new CRLs added to a directory can be used. New command line option
648 -verify_return_error to s_client and s_server. This causes real errors
649 to be returned by the verify callback instead of carrying on no matter
650 what. This reflects the way a "real world" verify callback would behave.
653 *) GOST engine, supporting several GOST algorithms and public key formats.
654 Kindly donated by Cryptocom.
657 *) Partial support for Issuing Distribution Point CRL extension. CRLs
658 partitioned by DP are handled but no indirect CRL or reason partitioning
659 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
660 selected via a scoring technique which handles IDP and AKID in CRLs.
663 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
664 will ultimately be used for all verify operations: this will remove the
665 X509_STORE dependency on certificate verification and allow alternative
666 lookup methods. X509_STORE based implementations of these two callbacks.
669 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
670 Modify get_crl() to find a valid (unexpired) CRL if possible.
673 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
674 this would be called X509_CRL_cmp() but that name is already used by
675 a function that just compares CRL issuer names. Cache several CRL
676 extensions in X509_CRL structure and cache CRLDP in X509.
679 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
680 this maps equivalent X509_NAME structures into a consistent structure.
681 Name comparison can then be performed rapidly using memcmp().
684 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
688 *) Allow digests to supply their own micalg string for S/MIME type using
689 the ctrl EVP_MD_CTRL_MICALG.
692 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
693 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
694 ctrl. It can then customise the structure before and/or after signing
698 *) New function OBJ_add_sigid() to allow application defined signature OIDs
699 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
700 to free up any added signature OIDs.
703 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
704 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
705 digest and cipher tables. New options added to openssl utility:
706 list-message-digest-algorithms and list-cipher-algorithms.
709 *) Change the array representation of binary polynomials: the list
710 of degrees of non-zero coefficients is now terminated with -1.
711 Previously it was terminated with 0, which was also part of the
712 value; thus, the array representation was not applicable to
713 polynomials where t^0 has coefficient zero. This change makes
714 the array representation useful in a more general context.
717 *) Various modifications and fixes to SSL/TLS cipher string
718 handling. For ECC, the code now distinguishes between fixed ECDH
719 with RSA certificates on the one hand and with ECDSA certificates
720 on the other hand, since these are separate ciphersuites. The
721 unused code for Fortezza ciphersuites has been removed.
723 For consistency with EDH, ephemeral ECDH is now called "EECDH"
724 (not "ECDHE"). For consistency with the code for DH
725 certificates, use of ECDH certificates is now considered ECDH
726 authentication, not RSA or ECDSA authentication (the latter is
727 merely the CA's signing algorithm and not actively used in the
730 The temporary ciphersuite alias "ECCdraft" is no longer
731 available, and ECC ciphersuites are no longer excluded from "ALL"
732 and "DEFAULT". The following aliases now exist for RFC 4492
733 ciphersuites, most of these by analogy with the DH case:
735 kECDHr - ECDH cert, signed with RSA
736 kECDHe - ECDH cert, signed with ECDSA
737 kECDH - ECDH cert (signed with either RSA or ECDSA)
738 kEECDH - ephemeral ECDH
739 ECDH - ECDH cert or ephemeral ECDH
745 AECDH - anonymous ECDH
746 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
750 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
751 Use correct micalg parameters depending on digest(s) in signed message.
754 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
755 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
758 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
759 an engine to register a method. Add ENGINE lookups for methods and
760 functional reference processing.
763 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
764 EVP_{Sign,Verify}* which allow an application to customise the signature
768 *) New -resign option to smime utility. This adds one or more signers
769 to an existing PKCS#7 signedData structure. Also -md option to use an
770 alternative message digest algorithm for signing.
773 *) Tidy up PKCS#7 routines and add new functions to make it easier to
774 create PKCS7 structures containing multiple signers. Update smime
775 application to support multiple signers.
778 *) New -macalg option to pkcs12 utility to allow setting of an alternative
782 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
783 Reorganize PBE internals to lookup from a static table using NIDs,
784 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
785 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
786 PRF which will be automatically used with PBES2.
789 *) Replace the algorithm specific calls to generate keys in "req" with the
793 *) Update PKCS#7 enveloped data routines to use new API. This is now
794 supported by any public key method supporting the encrypt operation. A
795 ctrl is added to allow the public key algorithm to examine or modify
796 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
800 *) Add a ctrl to asn1 method to allow a public key algorithm to express
801 a default digest type to use. In most cases this will be SHA1 but some
802 algorithms (such as GOST) need to specify an alternative digest. The
803 return value indicates how strong the prefernce is 1 means optional and
804 2 is mandatory (that is it is the only supported type). Modify
805 ASN1_item_sign() to accept a NULL digest argument to indicate it should
806 use the default md. Update openssl utilities to use the default digest
807 type for signing if it is not explicitly indicated.
810 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
811 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
812 signing method from the key type. This effectively removes the link
813 between digests and public key types.
816 *) Add an OID cross reference table and utility functions. Its purpose is to
817 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
818 rsaEncryption. This will allow some of the algorithm specific hackery
819 needed to use the correct OID to be removed.
822 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
823 structures for PKCS7_sign(). They are now set up by the relevant public
827 *) Add provisional EC pkey method with support for ECDSA and ECDH.
830 *) Add support for key derivation (agreement) in the API, DH method and
834 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
835 public and private key formats. As a side effect these add additional
836 command line functionality not previously available: DSA signatures can be
837 generated and verified using pkeyutl and DH key support and generation in
842 [Oliver Tappe <zooey@hirschkaefer.de>]
844 *) New make target "install_html_docs" installs HTML renditions of the
846 [Oliver Tappe <zooey@hirschkaefer.de>]
848 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
849 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
850 support key and parameter generation and add initial key generation
851 functionality for RSA.
854 *) Add functions for main EVP_PKEY_method operations. The undocumented
855 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
856 EVP_PKEY_{encrypt,decrypt}_old.
859 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
860 key API, doesn't do much yet.
863 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
864 public key algorithms. New option to openssl utility:
865 "list-public-key-algorithms" to print out info.
868 *) Implement the Supported Elliptic Curves Extension for
869 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
872 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
873 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
876 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
877 utilities such as rsa, dsa, dsaparam etc except they process any key
881 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
882 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
883 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
887 *) Initial support for pluggable public key ASN1.
888 De-spaghettify the public key ASN1 handling. Move public and private
889 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
890 algorithm specific handling to a single module within the relevant
891 algorithm directory. Add functions to allow (near) opaque processing
892 of public and private key structures.
895 *) Implement the Supported Point Formats Extension for
896 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
899 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
900 for the psk identity [hint] and the psk callback functions to the
901 SSL_SESSION, SSL and SSL_CTX structure.
904 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
908 SSL_CTX_use_psk_identity_hint
909 SSL_get_psk_identity_hint
911 SSL_use_psk_identity_hint
913 [Mika Kousa and Pasi Eronen of Nokia Corporation]
915 *) Add RFC 3161 compliant time stamp request creation, response generation
916 and response verification functionality.
917 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
919 *) Add initial support for TLS extensions, specifically for the server_name
920 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
921 have new members for a host name. The SSL data structure has an
922 additional member SSL_CTX *initial_ctx so that new sessions can be
923 stored in that context to allow for session resumption, even after the
924 SSL has been switched to a new SSL_CTX in reaction to a client's
925 server_name extension.
927 New functions (subject to change):
930 SSL_get_servername_type()
933 New CTRL codes and macros (subject to change):
935 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
936 - SSL_CTX_set_tlsext_servername_callback()
937 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
938 - SSL_CTX_set_tlsext_servername_arg()
939 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
941 openssl s_client has a new '-servername ...' option.
943 openssl s_server has new options '-servername_host ...', '-cert2 ...',
944 '-key2 ...', '-servername_fatal' (subject to change). This allows
945 testing the HostName extension for a specific single host name ('-cert'
946 and '-key' remain fallbacks for handshakes without HostName
947 negotiation). If the unrecogninzed_name alert has to be sent, this by
948 default is a warning; it becomes fatal with the '-servername_fatal'
951 [Peter Sylvester, Remy Allais, Christophe Renou]
953 *) Whirlpool hash implementation is added.
956 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
957 bn(64,32). Because of instruction set limitations it doesn't have
958 any negative impact on performance. This was done mostly in order
959 to make it possible to share assembler modules, such as bn_mul_mont
960 implementations, between 32- and 64-bit builds without hassle.
963 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
964 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
968 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
969 dedicated Montgomery multiplication procedure, is introduced.
970 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
971 "64-bit" performance on certain 32-bit targets.
974 *) New option SSL_OP_NO_COMP to disable use of compression selectively
975 in SSL structures. New SSL ctrl to set maximum send fragment size.
976 Save memory by seeting the I/O buffer sizes dynamically instead of
977 using the maximum available value.
980 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
981 in addition to the text details.
984 *) Very, very preliminary EXPERIMENTAL support for printing of general
985 ASN1 structures. This currently produces rather ugly output and doesn't
986 handle several customised structures at all.
989 *) Integrated support for PVK file format and some related formats such
990 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
991 these in the 'rsa' and 'dsa' utilities.
994 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
997 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
998 place for the (very old) "NETSCAPE" format certificates which are now
999 handled using new ASN1 code equivalents.
1002 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
1003 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
1004 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
1007 *) Modify CRL distribution points extension code to print out previously
1008 unsupported fields. Enhance extension setting code to allow setting of
1012 *) Add print and set support for Issuing Distribution Point CRL extension.
1015 *) Change 'Configure' script to enable Camellia by default.
1018 Changes between 0.9.8o and 0.9.8p [xx XXX xxxx]
1020 *) Don't reencode certificate when calculating signature: cache and use
1021 the original encoding instead. This makes signature verification of
1022 some broken encodings work correctly.
1025 *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
1026 is also one of the inputs.
1027 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
1029 *) Don't repeatedly append PBE algorithms to table if they already exist.
1030 Sort table on each new add. This effectively makes the table read only
1031 after all algorithms are added and subsequent calls to PKCS12_pbe_add
1035 Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
1037 [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
1040 *) Correct a typo in the CMS ASN1 module which can result in invalid memory
1041 access or freeing data twice (CVE-2010-0742)
1042 [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
1044 *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
1045 common in certificates and some applications which only call
1046 SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
1050 Reduce copying into .apps and .test in makevms.com
1051 Don't try to use blank CA certificate in CA.com
1052 Allow use of C files from original directories in maketests.com
1053 [Steven M. Schweda" <sms@antinode.info>]
1055 Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
1057 *) When rejecting SSL/TLS records due to an incorrect version number, never
1058 update s->server with a new major version number. As of
1059 - OpenSSL 0.9.8m if 'short' is a 16-bit type,
1060 - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
1061 the previous behavior could result in a read attempt at NULL when
1062 receiving specific incorrect SSL/TLS records once record payload
1063 protection is active. (CVE-2010-0740)
1064 [Bodo Moeller, Adam Langley <agl@chromium.org>]
1066 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
1067 could be crashed if the relevant tables were not present (e.g. chrooted).
1068 [Tomas Hoger <thoger@redhat.com>]
1070 Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
1072 *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
1073 [Martin Olsson, Neel Mehta]
1075 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
1076 accommodate for stack sorting, always a write lock!).
1079 *) On some versions of WIN32 Heap32Next is very slow. This can cause
1080 excessive delays in the RAND_poll(): over a minute. As a workaround
1081 include a time check in the inner Heap32Next loop too.
1084 *) The code that handled flushing of data in SSL/TLS originally used the
1085 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
1086 the problem outlined in PR#1949. The fix suggested there however can
1087 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
1088 of Apache). So instead simplify the code to flush unconditionally.
1089 This should be fine since flushing with no data to flush is a no op.
1092 *) Handle TLS versions 2.0 and later properly and correctly use the
1093 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
1094 off ancient servers have a habit of sticking around for a while...
1097 *) Modify compression code so it frees up structures without using the
1098 ex_data callbacks. This works around a problem where some applications
1099 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
1100 restarting) then use compression (e.g. SSL with compression) later.
1101 This results in significant per-connection memory leaks and
1102 has caused some security issues including CVE-2008-1678 and
1106 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
1107 change when encrypting or decrypting.
1110 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
1111 connect and renegotiate with servers which do not support RI.
1112 Until RI is more widely deployed this option is enabled by default.
1115 *) Add "missing" ssl ctrls to clear options and mode.
1118 *) If client attempts to renegotiate and doesn't support RI respond with
1119 a no_renegotiation alert as required by RFC5746. Some renegotiating
1120 TLS clients will continue a connection gracefully when they receive
1121 the alert. Unfortunately OpenSSL mishandled this alert and would hang
1122 waiting for a server hello which it will never receive. Now we treat a
1123 received no_renegotiation alert as a fatal error. This is because
1124 applications requesting a renegotiation might well expect it to succeed
1125 and would have no code in place to handle the server denying it so the
1126 only safe thing to do is to terminate the connection.
1129 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
1130 peer supports secure renegotiation and 0 otherwise. Print out peer
1131 renegotiation support in s_client/s_server.
1134 *) Replace the highly broken and deprecated SPKAC certification method with
1135 the updated NID creation version. This should correctly handle UTF8.
1138 *) Implement RFC5746. Re-enable renegotiation but require the extension
1139 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
1140 turns out to be a bad idea. It has been replaced by
1141 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
1142 SSL_CTX_set_options(). This is really not recommended unless you
1143 know what you are doing.
1144 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
1146 *) Fixes to stateless session resumption handling. Use initial_ctx when
1147 issuing and attempting to decrypt tickets in case it has changed during
1148 servername handling. Use a non-zero length session ID when attempting
1149 stateless session resumption: this makes it possible to determine if
1150 a resumption has occurred immediately after receiving server hello
1151 (several places in OpenSSL subtly assume this) instead of later in
1155 *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
1156 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
1157 fixes for a few places where the return code is not checked
1159 [Julia Lawall <julia@diku.dk>]
1161 *) Add --strict-warnings option to Configure script to include devteam
1162 warnings in other configurations.
1165 *) Add support for --libdir option and LIBDIR variable in makefiles. This
1166 makes it possible to install openssl libraries in locations which
1167 have names other than "lib", for example "/usr/lib64" which some
1169 [Steve Henson, based on patch from Jeremy Utley]
1171 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
1172 X690 8.9.12 and can produce some misleading textual output of OIDs.
1173 [Steve Henson, reported by Dan Kaminsky]
1175 *) Delete MD2 from algorithm tables. This follows the recommendation in
1176 several standards that it is not used in new applications due to
1177 several cryptographic weaknesses. For binary compatibility reasons
1178 the MD2 API is still compiled in by default.
1181 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
1185 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
1186 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
1188 [Guenter <lists@gknw.net>]
1190 *) Fix the server certificate chain building code to use X509_verify_cert(),
1191 it used to have an ad-hoc builder which was unable to cope with anything
1192 other than a simple chain.
1193 [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
1195 *) Don't check self signed certificate signatures in X509_verify_cert()
1196 by default (a flag can override this): it just wastes time without
1197 adding any security. As a useful side effect self signed root CAs
1198 with non-FIPS digests are now usable in FIPS mode.
1201 *) In dtls1_process_out_of_seq_message() the check if the current message
1202 is already buffered was missing. For every new message was memory
1203 allocated, allowing an attacker to perform an denial of service attack
1204 with sending out of seq handshake messages until there is no memory
1205 left. Additionally every future messege was buffered, even if the
1206 sequence number made no sense and would be part of another handshake.
1207 So only messages with sequence numbers less than 10 in advance will be
1208 buffered. (CVE-2009-1378)
1209 [Robin Seggelmann, discovered by Daniel Mentz]
1211 *) Records are buffered if they arrive with a future epoch to be
1212 processed after finishing the corresponding handshake. There is
1213 currently no limitation to this buffer allowing an attacker to perform
1214 a DOS attack with sending records with future epochs until there is no
1215 memory left. This patch adds the pqueue_size() function to detemine
1216 the size of a buffer and limits the record buffer to 100 entries.
1218 [Robin Seggelmann, discovered by Daniel Mentz]
1220 *) Keep a copy of frag->msg_header.frag_len so it can be used after the
1221 parent structure is freed. (CVE-2009-1379)
1224 *) Handle non-blocking I/O properly in SSL_shutdown() call.
1225 [Darryl Miles <darryl-mailinglists@netbauds.net>]
1228 [Ilya O. <vrghost@gmail.com>]
1230 Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
1232 *) Disable renegotiation completely - this fixes a severe security
1233 problem (CVE-2009-3555) at the cost of breaking all
1234 renegotiation. Renegotiation can be re-enabled by setting
1235 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
1236 run-time. This is really not recommended unless you know what
1240 Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
1242 *) Don't set val to NULL when freeing up structures, it is freed up by
1243 underlying code. If sizeof(void *) > sizeof(long) this can result in
1244 zeroing past the valid field. (CVE-2009-0789)
1245 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
1247 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
1248 checked correctly. This would allow some invalid signed attributes to
1249 appear to verify correctly. (CVE-2009-0591)
1250 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1252 *) Reject UniversalString and BMPString types with invalid lengths. This
1253 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
1254 a legal length. (CVE-2009-0590)
1257 *) Set S/MIME signing as the default purpose rather than setting it
1258 unconditionally. This allows applications to override it at the store
1262 *) Permit restricted recursion of ASN1 strings. This is needed in practice
1263 to handle some structures.
1266 *) Improve efficiency of mem_gets: don't search whole buffer each time
1268 [Jeremy Shapiro <jnshapir@us.ibm.com>]
1270 *) New -hex option for openssl rand.
1273 *) Print out UTF8String and NumericString when parsing ASN1.
1276 *) Support NumericString type for name components.
1279 *) Allow CC in the environment to override the automatically chosen
1280 compiler. Note that nothing is done to ensure flags work with the
1284 Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
1286 *) Properly check EVP_VerifyFinal() and similar return values
1288 [Ben Laurie, Bodo Moeller, Google Security Team]
1290 *) Enable TLS extensions by default.
1293 *) Allow the CHIL engine to be loaded, whether the application is
1294 multithreaded or not. (This does not release the developer from the
1295 obligation to set up the dynamic locking callbacks.)
1296 [Sander Temme <sander@temme.net>]
1298 *) Use correct exit code if there is an error in dgst command.
1299 [Steve Henson; problem pointed out by Roland Dirlewanger]
1301 *) Tweak Configure so that you need to say "experimental-jpake" to enable
1302 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
1305 *) Add experimental JPAKE support, including demo authentication in
1306 s_client and s_server.
1309 *) Set the comparison function in v3_addr_canonize().
1310 [Rob Austein <sra@hactrn.net>]
1312 *) Add support for XMPP STARTTLS in s_client.
1313 [Philip Paeps <philip@freebsd.org>]
1315 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
1316 to ensure that even with this option, only ciphersuites in the
1317 server's preference list will be accepted. (Note that the option
1318 applies only when resuming a session, so the earlier behavior was
1319 just about the algorithm choice for symmetric cryptography.)
1322 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
1324 *) Fix NULL pointer dereference if a DTLS server received
1325 ChangeCipherSpec as first record (CVE-2009-1386).
1328 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
1329 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
1332 *) The fix in 0.9.8c that supposedly got rid of unsafe
1333 double-checked locking was incomplete for RSA blinding,
1334 addressing just one layer of what turns out to have been
1335 doubly unsafe triple-checked locking.
1337 So now fix this for real by retiring the MONT_HELPER macro
1338 in crypto/rsa/rsa_eay.c.
1340 [Bodo Moeller; problem pointed out by Marius Schilder]
1342 *) Various precautionary measures:
1344 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
1346 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
1347 (NB: This would require knowledge of the secret session ticket key
1348 to exploit, in which case you'd be SOL either way.)
1350 - Change bn_nist.c so that it will properly handle input BIGNUMs
1351 outside the expected range.
1353 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
1356 [Neel Mehta, Bodo Moeller]
1358 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
1359 the load fails. Useful for distros.
1360 [Ben Laurie and the FreeBSD team]
1362 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
1365 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
1368 *) Expand ENGINE to support engine supplied SSL client certificate functions.
1370 This work was sponsored by Logica.
1373 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
1374 keystores. Support for SSL/TLS client authentication too.
1375 Not compiled unless enable-capieng specified to Configure.
1377 This work was sponsored by Logica.
1380 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
1381 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
1382 attribute creation routines such as certifcate requests and PKCS#12
1386 Changes between 0.9.8g and 0.9.8h [28 May 2008]
1388 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
1389 handshake which could lead to a cilent crash as found using the
1390 Codenomicon TLS test suite (CVE-2008-1672)
1391 [Steve Henson, Mark Cox]
1393 *) Fix double free in TLS server name extensions which could lead to
1394 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
1397 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
1399 Clear the error queue to ensure that error entries left from
1400 older function calls do not interfere with the correct operation.
1401 [Lutz Jaenicke, Erik de Castro Lopo]
1403 *) Remove root CA certificates of commercial CAs:
1405 The OpenSSL project does not recommend any specific CA and does not
1406 have any policy with respect to including or excluding any CA.
1407 Therefore it does not make any sense to ship an arbitrary selection
1408 of root CA certificates with the OpenSSL software.
1411 *) RSA OAEP patches to fix two separate invalid memory reads.
1412 The first one involves inputs when 'lzero' is greater than
1413 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
1414 before the beginning of from). The second one involves inputs where
1415 the 'db' section contains nothing but zeroes (there is a one-byte
1416 invalid read after the end of 'db').
1417 [Ivan Nestlerode <inestlerode@us.ibm.com>]
1419 *) Partial backport from 0.9.9-dev:
1421 Introduce bn_mul_mont (dedicated Montgomery multiplication
1422 procedure) as a candidate for BIGNUM assembler implementation.
1423 While 0.9.9-dev uses assembler for various architectures, only
1424 x86_64 is available by default here in the 0.9.8 branch, and
1425 32-bit x86 is available through a compile-time setting.
1427 To try the 32-bit x86 assembler implementation, use Configure
1428 option "enable-montasm" (which exists only for this backport).
1430 As "enable-montasm" for 32-bit x86 disclaims code stability
1431 anyway, in this constellation we activate additional code
1432 backported from 0.9.9-dev for further performance improvements,
1433 namely BN_from_montgomery_word. (To enable this otherwise,
1434 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
1436 [Andy Polyakov (backport partially by Bodo Moeller)]
1438 *) Add TLS session ticket callback. This allows an application to set
1439 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
1440 values. This is useful for key rollover for example where several key
1441 sets may exist with different names.
1444 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
1445 This was broken until now in 0.9.8 releases, such that the only way
1446 a registered ENGINE could be used (assuming it initialises
1447 successfully on the host) was to explicitly set it as the default
1448 for the relevant algorithms. This is in contradiction with 0.9.7
1449 behaviour and the documentation. With this fix, when an ENGINE is
1450 registered into a given algorithm's table of implementations, the
1451 'uptodate' flag is reset so that auto-discovery will be used next
1452 time a new context for that algorithm attempts to select an
1454 [Ian Lister (tweaked by Geoff Thorpe)]
1456 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
1457 implemention in the following ways:
1459 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
1462 Lack of BER streaming support means one pass streaming processing is
1463 only supported if data is detached: setting the streaming flag is
1464 ignored for embedded content.
1466 CMS support is disabled by default and must be explicitly enabled
1467 with the enable-cms configuration option.
1470 *) Update the GMP engine glue to do direct copies between BIGNUM and
1471 mpz_t when openssl and GMP use the same limb size. Otherwise the
1472 existing "conversion via a text string export" trick is still used.
1473 [Paul Sheer <paulsheer@gmail.com>]
1475 *) Zlib compression BIO. This is a filter BIO which compressed and
1476 uncompresses any data passed through it.
1479 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
1480 RFC3394 compatible AES key wrapping.
1483 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
1484 sets string data without copying. X509_ALGOR_set0() and
1485 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
1486 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
1487 from an X509_ATTRIBUTE structure optionally checking it occurs only
1488 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
1492 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
1493 to get the expected BN_FLG_CONSTTIME behavior.
1494 [Bodo Moeller (Google)]
1498 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
1499 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
1500 - added some more tests to do_tests.pl
1501 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
1502 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
1503 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
1504 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
1505 - various changes to netware.pl to enable gcc-cross builds on Win32
1507 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
1508 - various changes to fix missing prototype warnings
1509 - fixed x86nasm.pl to create correct asm files for NASM COFF output
1510 - added AES, WHIRLPOOL and CPUID assembler code to build files
1511 - added missing AES assembler make rules to mk1mf.pl
1512 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
1513 [Guenter Knauf <eflash@gmx.net>]
1515 *) Implement certificate status request TLS extension defined in RFC3546.
1516 A client can set the appropriate parameters and receive the encoded
1517 OCSP response via a callback. A server can query the supplied parameters
1518 and set the encoded OCSP response in the callback. Add simplified examples
1519 to s_client and s_server.
1522 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
1524 *) Fix various bugs:
1525 + Binary incompatibility of ssl_ctx_st structure
1526 + DTLS interoperation with non-compliant servers
1527 + Don't call get_session_cb() without proposed session
1528 + Fix ia64 assembler code
1529 [Andy Polyakov, Steve Henson]
1531 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
1533 *) DTLS Handshake overhaul. There were longstanding issues with
1534 OpenSSL DTLS implementation, which were making it impossible for
1535 RFC 4347 compliant client to communicate with OpenSSL server.
1536 Unfortunately just fixing these incompatibilities would "cut off"
1537 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
1538 server keeps tolerating non RFC compliant syntax. The opposite is
1539 not true, 0.9.8f client can not communicate with earlier server.
1540 This update even addresses CVE-2007-4995.
1543 *) Changes to avoid need for function casts in OpenSSL: some compilers
1544 (gcc 4.2 and later) reject their use.
1545 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
1548 *) Add RFC4507 support to OpenSSL. This includes the corrections in
1549 RFC4507bis. The encrypted ticket format is an encrypted encoded
1550 SSL_SESSION structure, that way new session features are automatically
1553 If a client application caches session in an SSL_SESSION structure
1554 support is transparent because tickets are now stored in the encoded
1557 The SSL_CTX structure automatically generates keys for ticket
1558 protection in servers so again support should be possible
1559 with no application modification.
1561 If a client or server wishes to disable RFC4507 support then the option
1562 SSL_OP_NO_TICKET can be set.
1564 Add a TLS extension debugging callback to allow the contents of any client
1565 or server extensions to be examined.
1567 This work was sponsored by Google.
1570 *) Add initial support for TLS extensions, specifically for the server_name
1571 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
1572 have new members for a host name. The SSL data structure has an
1573 additional member SSL_CTX *initial_ctx so that new sessions can be
1574 stored in that context to allow for session resumption, even after the
1575 SSL has been switched to a new SSL_CTX in reaction to a client's
1576 server_name extension.
1578 New functions (subject to change):
1580 SSL_get_servername()
1581 SSL_get_servername_type()
1584 New CTRL codes and macros (subject to change):
1586 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1587 - SSL_CTX_set_tlsext_servername_callback()
1588 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1589 - SSL_CTX_set_tlsext_servername_arg()
1590 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1592 openssl s_client has a new '-servername ...' option.
1594 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1595 '-key2 ...', '-servername_fatal' (subject to change). This allows
1596 testing the HostName extension for a specific single host name ('-cert'
1597 and '-key' remain fallbacks for handshakes without HostName
1598 negotiation). If the unrecogninzed_name alert has to be sent, this by
1599 default is a warning; it becomes fatal with the '-servername_fatal'
1602 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1604 *) Add AES and SSE2 assembly language support to VC++ build.
1607 *) Mitigate attack on final subtraction in Montgomery reduction.
1610 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1611 (which previously caused an internal error).
1614 *) Squeeze another 10% out of IGE mode when in != out.
1617 *) AES IGE mode speedup.
1618 [Dean Gaudet (Google)]
1620 *) Add the Korean symmetric 128-bit cipher SEED (see
1621 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1622 add SEED ciphersuites from RFC 4162:
1624 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1625 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1626 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1627 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1629 To minimize changes between patchlevels in the OpenSSL 0.9.8
1630 series, SEED remains excluded from compilation unless OpenSSL
1631 is configured with 'enable-seed'.
1632 [KISA, Bodo Moeller]
1634 *) Mitigate branch prediction attacks, which can be practical if a
1635 single processor is shared, allowing a spy process to extract
1636 information. For detailed background information, see
1637 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1638 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1639 and Necessary Software Countermeasures"). The core of the change
1640 are new versions BN_div_no_branch() and
1641 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1642 respectively, which are slower, but avoid the security-relevant
1643 conditional branches. These are automatically called by BN_div()
1644 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1645 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1646 remove a conditional branch.
1648 BN_FLG_CONSTTIME is the new name for the previous
1649 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1650 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1651 in the exponent causes BN_mod_exp_mont() to use the alternative
1652 implementation in BN_mod_exp_mont_consttime().) The old name
1653 remains as a deprecated alias.
1655 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1656 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1657 constant-time implementations for more than just exponentiation.
1658 Here too the old name is kept as a deprecated alias.
1660 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1661 the BN_BLINDING structure gets an independent copy of the
1662 modulus. This means that the previous "BIGNUM *m" argument to
1663 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1664 essentially becomes "const BIGNUM *m", although we can't actually
1665 change this in the header file before 0.9.9. It allows
1666 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1667 enable BN_FLG_CONSTTIME.
1669 [Matthew D Wood (Intel Corp)]
1671 *) In the SSL/TLS server implementation, be strict about session ID
1672 context matching (which matters if an application uses a single
1673 external cache for different purposes). Previously,
1674 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1675 set. This did ensure strict client verification, but meant that,
1676 with applications using a single external cache for quite
1677 different requirements, clients could circumvent ciphersuite
1678 restrictions for a given session ID context by starting a session
1679 in a different context.
1682 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1683 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1684 authentication-only ciphersuites.
1687 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1688 not complete and could lead to a possible single byte overflow
1689 (CVE-2007-5135) [Ben Laurie]
1691 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1693 *) Since AES128 and AES256 (and similarly Camellia128 and
1694 Camellia256) share a single mask bit in the logic of
1695 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1696 kludge to work properly if AES128 is available and AES256 isn't
1697 (or if Camellia128 is available and Camellia256 isn't).
1700 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1701 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1702 When a point or a seed is encoded in a BIT STRING, we need to
1703 prevent the removal of trailing zero bits to get the proper DER
1704 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1705 of a NamedBitList, for which trailing 0 bits need to be removed.)
1708 *) Have SSL/TLS server implementation tolerate "mismatched" record
1709 protocol version while receiving ClientHello even if the
1710 ClientHello is fragmented. (The server can't insist on the
1711 particular protocol version it has chosen before the ServerHello
1712 message has informed the client about his choice.)
1715 *) Add RFC 3779 support.
1716 [Rob Austein for ARIN, Ben Laurie]
1718 *) Load error codes if they are not already present instead of using a
1719 static variable. This allows them to be cleanly unloaded and reloaded.
1720 Improve header file function name parsing.
1723 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1724 or CAPABILITY handshake as required by RFCs.
1727 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1729 *) Introduce limits to prevent malicious keys being able to
1730 cause a denial of service. (CVE-2006-2940)
1731 [Steve Henson, Bodo Moeller]
1733 *) Fix ASN.1 parsing of certain invalid structures that can result
1734 in a denial of service. (CVE-2006-2937) [Steve Henson]
1736 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1737 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1739 *) Fix SSL client code which could crash if connecting to a
1740 malicious SSLv2 server. (CVE-2006-4343)
1741 [Tavis Ormandy and Will Drewry, Google Security Team]
1743 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1744 match only those. Before that, "AES256-SHA" would be interpreted
1745 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1746 the same strength classification in 0.9.7h) as we currently only
1747 have a single AES bit in the ciphersuite description bitmap.
1748 That change, however, also applied to ciphersuite strings such as
1749 "RC4-MD5" that intentionally matched multiple ciphersuites --
1750 namely, SSL 2.0 ciphersuites in addition to the more common ones
1751 from SSL 3.0/TLS 1.0.
1753 So we change the selection algorithm again: Naming an explicit
1754 ciphersuite selects this one ciphersuite, and any other similar
1755 ciphersuite (same bitmap) from *other* protocol versions.
1756 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1757 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1759 Since SSL 2.0 does not have any ciphersuites for which the
1760 128/256 bit distinction would be relevant, this works for now.
1761 The proper fix will be to use different bits for AES128 and
1762 AES256, which would have avoided the problems from the beginning;
1763 however, bits are scarce, so we can only do this in a new release
1764 (not just a patchlevel) when we can change the SSL_CIPHER
1765 definition to split the single 'unsigned long mask' bitmap into
1766 multiple values to extend the available space.
1770 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1772 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1773 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1775 *) Add AES IGE and biIGE modes.
1778 *) Change the Unix randomness entropy gathering to use poll() when
1779 possible instead of select(), since the latter has some
1780 undesirable limitations.
1781 [Darryl Miles via Richard Levitte and Bodo Moeller]
1783 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1784 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1785 cannot be implicitly activated as part of, e.g., the "AES" alias.
1786 However, please upgrade to OpenSSL 0.9.9[-dev] for
1787 non-experimental use of the ECC ciphersuites to get TLS extension
1788 support, which is required for curve and point format negotiation
1789 to avoid potential handshake problems.
1792 *) Disable rogue ciphersuites:
1794 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1795 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1796 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1798 The latter two were purportedly from
1799 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1802 Also deactivate the remaining ciphersuites from
1803 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1804 unofficial, and the ID has long expired.
1807 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1808 dual-core machines) and other potential thread-safety issues.
1811 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1812 versions), which is now available for royalty-free use
1813 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1814 Also, add Camellia TLS ciphersuites from RFC 4132.
1816 To minimize changes between patchlevels in the OpenSSL 0.9.8
1817 series, Camellia remains excluded from compilation unless OpenSSL
1818 is configured with 'enable-camellia'.
1821 *) Disable the padding bug check when compression is in use. The padding
1822 bug check assumes the first packet is of even length, this is not
1823 necessarily true if compresssion is enabled and can result in false
1824 positives causing handshake failure. The actual bug test is ancient
1825 code so it is hoped that implementations will either have fixed it by
1826 now or any which still have the bug do not support compression.
1829 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1831 *) When applying a cipher rule check to see if string match is an explicit
1832 cipher suite and only match that one cipher suite if it is.
1835 *) Link in manifests for VC++ if needed.
1836 [Austin Ziegler <halostatue@gmail.com>]
1838 *) Update support for ECC-based TLS ciphersuites according to
1839 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1840 TLS extensions, which are supported starting with the 0.9.9
1841 branch, not in the OpenSSL 0.9.8 branch).
1844 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1845 opaque EVP_CIPHER_CTX handling.
1848 *) Fixes and enhancements to zlib compression code. We now only use
1849 "zlib1.dll" and use the default __cdecl calling convention on Win32
1850 to conform with the standards mentioned here:
1851 http://www.zlib.net/DLL_FAQ.txt
1852 Static zlib linking now works on Windows and the new --with-zlib-include
1853 --with-zlib-lib options to Configure can be used to supply the location
1854 of the headers and library. Gracefully handle case where zlib library
1858 *) Several fixes and enhancements to the OID generation code. The old code
1859 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1860 handle numbers larger than ULONG_MAX, truncated printing and had a
1861 non standard OBJ_obj2txt() behaviour.
1864 *) Add support for building of engines under engine/ as shared libraries
1865 under VC++ build system.
1868 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1869 Hopefully, we will not see any false combination of paths any more.
1872 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1874 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1875 (part of SSL_OP_ALL). This option used to disable the
1876 countermeasure against man-in-the-middle protocol-version
1877 rollback in the SSL 2.0 server implementation, which is a bad
1878 idea. (CVE-2005-2969)
1880 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1881 for Information Security, National Institute of Advanced Industrial
1882 Science and Technology [AIST], Japan)]
1884 *) Add two function to clear and return the verify parameter flags.
1887 *) Keep cipherlists sorted in the source instead of sorting them at
1888 runtime, thus removing the need for a lock.
1891 *) Avoid some small subgroup attacks in Diffie-Hellman.
1892 [Nick Mathewson and Ben Laurie]
1894 *) Add functions for well-known primes.
1897 *) Extended Windows CE support.
1898 [Satoshi Nakamura and Andy Polyakov]
1900 *) Initialize SSL_METHOD structures at compile time instead of during
1901 runtime, thus removing the need for a lock.
1904 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1905 attempting to decrypt each encrypted key in turn. Add support to
1909 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1911 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1914 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1917 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1918 key into the same file any more.
1921 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1924 *) Add -utf8 command line and config file option to 'ca'.
1925 [Stefan <stf@udoma.org]
1927 *) Removed the macro des_crypt(), as it seems to conflict with some
1928 libraries. Use DES_crypt().
1931 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1932 involves renaming the source and generated shared-libs for
1933 both. The engines will accept the corrected or legacy ids
1934 ('ncipher' and '4758_cca' respectively) when binding. NB,
1935 this only applies when building 'shared'.
1936 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1938 *) Add attribute functions to EVP_PKEY structure. Modify
1939 PKCS12_create() to recognize a CSP name attribute and
1940 use it. Make -CSP option work again in pkcs12 utility.
1943 *) Add new functionality to the bn blinding code:
1944 - automatic re-creation of the BN_BLINDING parameters after
1945 a fixed number of uses (currently 32)
1946 - add new function for parameter creation
1947 - introduce flags to control the update behaviour of the
1948 BN_BLINDING parameters
1949 - hide BN_BLINDING structure
1950 Add a second BN_BLINDING slot to the RSA structure to improve
1951 performance when a single RSA object is shared among several
1955 *) Add support for DTLS.
1956 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1958 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1959 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1962 *) Remove buggy and incompletet DH cert support from
1963 ssl/ssl_rsa.c and ssl/s3_both.c
1966 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1967 the apps/openssl applications.
1970 *) Compile clean with "-Wall -Wmissing-prototypes
1971 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1972 DEBUG_SAFESTACK must also be set.
1975 *) Change ./Configure so that certain algorithms can be disabled by default.
1976 The new counterpiece to "no-xxx" is "enable-xxx".
1978 The patented RC5 and MDC2 algorithms will now be disabled unless
1979 "enable-rc5" and "enable-mdc2", respectively, are specified.
1981 (IDEA remains enabled despite being patented. This is because IDEA
1982 is frequently required for interoperability, and there is no license
1983 fee for non-commercial use. As before, "no-idea" can be used to
1984 avoid this algorithm.)
1988 *) Add processing of proxy certificates (see RFC 3820). This work was
1989 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1990 EGEE (Enabling Grids for E-science in Europe).
1993 *) RC4 performance overhaul on modern architectures/implementations, such
1994 as Intel P4, IA-64 and AMD64.
1997 *) New utility extract-section.pl. This can be used specify an alternative
1998 section number in a pod file instead of having to treat each file as
1999 a separate case in Makefile. This can be done by adding two lines to the
2002 =for comment openssl_section:XXX
2004 The blank line is mandatory.
2008 *) New arguments -certform, -keyform and -pass for s_client and s_server
2009 to allow alternative format key and certificate files and passphrase
2013 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
2014 update associated structures and add various utility functions.
2016 Add new policy related verify parameters, include policy checking in
2017 standard verify code. Enhance 'smime' application with extra parameters
2018 to support policy checking and print out.
2021 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
2022 Nehemiah processors. These extensions support AES encryption in hardware
2023 as well as RNG (though RNG support is currently disabled).
2024 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
2026 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
2029 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
2030 [Andy Polyakov and a number of other people]
2032 *) Improved PowerPC platform support. Most notably BIGNUM assembler
2033 implementation contributed by IBM.
2034 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
2036 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
2037 exponent rather than 'unsigned long'. There is a corresponding change to
2038 the new 'rsa_keygen' element of the RSA_METHOD structure.
2039 [Jelte Jansen, Geoff Thorpe]
2041 *) Functionality for creating the initial serial number file is now
2042 moved from CA.pl to the 'ca' utility with a new option -create_serial.
2044 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
2045 number file to 1, which is bound to cause problems. To avoid
2046 the problems while respecting compatibility between different 0.9.7
2047 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
2048 CA.pl for serial number initialization. With the new release 0.9.8,
2049 we can fix the problem directly in the 'ca' utility.)
2052 *) Reduced header interdepencies by declaring more opaque objects in
2053 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
2054 give fewer recursive includes, which could break lazy source code - so
2055 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
2056 developers should define this symbol when building and using openssl to
2057 ensure they track the recommended behaviour, interfaces, [etc], but
2058 backwards-compatible behaviour prevails when this isn't defined.
2061 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
2064 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
2065 This will generate a random key of the appropriate length based on the
2066 cipher context. The EVP_CIPHER can provide its own random key generation
2067 routine to support keys of a specific form. This is used in the des and
2068 3des routines to generate a key of the correct parity. Update S/MIME
2069 code to use new functions and hence generate correct parity DES keys.
2070 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
2071 valid (weak or incorrect parity).
2074 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
2075 as looking them up. This is useful when the verified structure may contain
2076 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
2077 present unless the new PKCS7_NO_CRL flag is asserted.
2080 *) Extend ASN1 oid configuration module. It now additionally accepts the
2083 shortName = some long name, 1.2.3.4
2086 *) Reimplemented the BN_CTX implementation. There is now no more static
2087 limitation on the number of variables it can handle nor the depth of the
2088 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
2089 information can now expand as required, and rather than having a single
2090 static array of bignums, BN_CTX now uses a linked-list of such arrays
2091 allowing it to expand on demand whilst maintaining the usefulness of
2092 BN_CTX's "bundling".
2095 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
2096 to allow all RSA operations to function using a single BN_CTX.
2099 *) Preliminary support for certificate policy evaluation and checking. This
2100 is initially intended to pass the tests outlined in "Conformance Testing
2101 of Relying Party Client Certificate Path Processing Logic" v1.07.
2104 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
2105 remained unused and not that useful. A variety of other little bignum
2106 tweaks and fixes have also been made continuing on from the audit (see
2110 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
2111 associated ASN1, EVP and SSL functions and old ASN1 macros.
2114 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
2115 and this should never fail. So the return value from the use of
2116 BN_set_word() (which can fail due to needless expansion) is now deprecated;
2117 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
2120 *) BN_CTX_get() should return zero-valued bignums, providing the same
2121 initialised value as BN_new().
2122 [Geoff Thorpe, suggested by Ulf Möller]
2124 *) Support for inhibitAnyPolicy certificate extension.
2127 *) An audit of the BIGNUM code is underway, for which debugging code is
2128 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
2129 is considered valid when processing BIGNUMs, and causes execution to
2130 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
2131 further steps are taken to deliberately pollute unused data in BIGNUM
2132 structures to try and expose faulty code further on. For now, openssl will
2133 (in its default mode of operation) continue to tolerate the inconsistent
2134 forms that it has tolerated in the past, but authors and packagers should
2135 consider trying openssl and their own applications when compiled with
2136 these debugging symbols defined. It will help highlight potential bugs in
2137 their own code, and will improve the test coverage for OpenSSL itself. At
2138 some point, these tighter rules will become openssl's default to improve
2139 maintainability, though the assert()s and other overheads will remain only
2140 in debugging configurations. See bn.h for more details.
2141 [Geoff Thorpe, Nils Larsch, Ulf Möller]
2143 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
2144 that can only be obtained through BN_CTX_new() (which implicitly
2145 initialises it). The presence of this function only made it possible
2146 to overwrite an existing structure (and cause memory leaks).
2149 *) Because of the callback-based approach for implementing LHASH as a
2150 template type, lh_insert() adds opaque objects to hash-tables and
2151 lh_doall() or lh_doall_arg() are typically used with a destructor callback
2152 to clean up those corresponding objects before destroying the hash table
2153 (and losing the object pointers). So some over-zealous constifications in
2154 LHASH have been relaxed so that lh_insert() does not take (nor store) the
2155 objects as "const" and the lh_doall[_arg] callback wrappers are not
2156 prototyped to have "const" restrictions on the object pointers they are
2157 given (and so aren't required to cast them away any more).
2160 *) The tmdiff.h API was so ugly and minimal that our own timing utility
2161 (speed) prefers to use its own implementation. The two implementations
2162 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
2163 its object type properly exposed (MS_TM) instead of casting to/from "char
2164 *". This may still change yet if someone realises MS_TM and "ms_time_***"
2165 aren't necessarily the greatest nomenclatures - but this is what was used
2166 internally to the implementation so I've used that for now.
2169 *) Ensure that deprecated functions do not get compiled when
2170 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
2171 the self-tests were still using deprecated key-generation functions so
2172 these have been updated also.
2175 *) Reorganise PKCS#7 code to separate the digest location functionality
2176 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
2177 New function PKCS7_set_digest() to set the digest type for PKCS#7
2178 digestedData type. Add additional code to correctly generate the
2179 digestedData type and add support for this type in PKCS7 initialization
2183 *) New function PKCS7_set0_type_other() this initializes a PKCS7
2184 structure of type "other".
2187 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
2188 sure the loop does correctly stop and breaking ("division by zero")
2189 modulus operations are not performed. The (pre-generated) prime
2190 table crypto/bn/bn_prime.h was already correct, but it could not be
2191 re-generated on some platforms because of the "division by zero"
2192 situation in the script.
2193 [Ralf S. Engelschall]
2195 *) Update support for ECC-based TLS ciphersuites according to
2196 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
2197 SHA-1 now is only used for "small" curves (where the
2198 representation of a field element takes up to 24 bytes); for
2199 larger curves, the field element resulting from ECDH is directly
2200 used as premaster secret.
2201 [Douglas Stebila (Sun Microsystems Laboratories)]
2203 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
2204 curve secp160r1 to the tests.
2205 [Douglas Stebila (Sun Microsystems Laboratories)]
2207 *) Add the possibility to load symbols globally with DSO.
2208 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
2210 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
2211 control of the error stack.
2214 *) Add support for STORE in ENGINE.
2217 *) Add the STORE type. The intention is to provide a common interface
2218 to certificate and key stores, be they simple file-based stores, or
2219 HSM-type store, or LDAP stores, or...
2220 NOTE: The code is currently UNTESTED and isn't really used anywhere.
2223 *) Add a generic structure called OPENSSL_ITEM. This can be used to
2224 pass a list of arguments to any function as well as provide a way
2225 for a function to pass data back to the caller.
2228 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
2229 works like BUF_strdup() but can be used to duplicate a portion of
2230 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
2234 *) Add the function sk_find_ex() which works like sk_find(), but will
2235 return an index to an element even if an exact match couldn't be
2236 found. The index is guaranteed to point at the element where the
2237 searched-for key would be inserted to preserve sorting order.
2240 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
2241 takes an extra flags argument for optional functionality. Currently,
2242 the following flags are defined:
2244 OBJ_BSEARCH_VALUE_ON_NOMATCH
2245 This one gets OBJ_bsearch_ex() to return a pointer to the first
2246 element where the comparing function returns a negative or zero
2249 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
2250 This one gets OBJ_bsearch_ex() to return a pointer to the first
2251 element where the comparing function returns zero. This is useful
2252 if there are more than one element where the comparing function
2256 *) Make it possible to create self-signed certificates with 'openssl ca'
2257 in such a way that the self-signed certificate becomes part of the
2258 CA database and uses the same mechanisms for serial number generation
2259 as all other certificate signing. The new flag '-selfsign' enables
2260 this functionality. Adapt CA.sh and CA.pl.in.
2263 *) Add functionality to check the public key of a certificate request
2264 against a given private. This is useful to check that a certificate
2265 request can be signed by that key (self-signing).
2268 *) Make it possible to have multiple active certificates with the same
2269 subject in the CA index file. This is done only if the keyword
2270 'unique_subject' is set to 'no' in the main CA section (default
2271 if 'CA_default') of the configuration file. The value is saved
2272 with the database itself in a separate index attribute file,
2273 named like the index file with '.attr' appended to the name.
2276 *) Generate muti valued AVAs using '+' notation in config files for
2280 *) Support for nameConstraints certificate extension.
2283 *) Support for policyConstraints certificate extension.
2286 *) Support for policyMappings certificate extension.
2289 *) Make sure the default DSA_METHOD implementation only uses its
2290 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
2291 and change its own handlers to be NULL so as to remove unnecessary
2292 indirection. This lets alternative implementations fallback to the
2293 default implementation more easily.
2296 *) Support for directoryName in GeneralName related extensions
2300 *) Make it possible to link applications using Makefile.shared.
2301 Make that possible even when linking against static libraries!
2304 *) Support for single pass processing for S/MIME signing. This now
2305 means that S/MIME signing can be done from a pipe, in addition
2306 cleartext signing (multipart/signed type) is effectively streaming
2307 and the signed data does not need to be all held in memory.
2309 This is done with a new flag PKCS7_STREAM. When this flag is set
2310 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
2311 is done after the data is output (and digests calculated) in
2312 SMIME_write_PKCS7().
2315 *) Add full support for -rpath/-R, both in shared libraries and
2316 applications, at least on the platforms where it's known how
2320 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
2321 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
2322 will now compute a table of multiples of the generator that
2323 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
2324 faster (notably in the case of a single point multiplication,
2325 scalar * generator).
2326 [Nils Larsch, Bodo Moeller]
2328 *) IPv6 support for certificate extensions. The various extensions
2329 which use the IP:a.b.c.d can now take IPv6 addresses using the
2330 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
2334 *) Added an ENGINE that implements RSA by performing private key
2335 exponentiations with the GMP library. The conversions to and from
2336 GMP's mpz_t format aren't optimised nor are any montgomery forms
2337 cached, and on x86 it appears OpenSSL's own performance has caught up.
2338 However there are likely to be other architectures where GMP could
2339 provide a boost. This ENGINE is not built in by default, but it can be
2340 specified at Configure time and should be accompanied by the necessary
2341 linker additions, eg;
2342 ./config -DOPENSSL_USE_GMP -lgmp
2345 *) "openssl engine" will not display ENGINE/DSO load failure errors when
2346 testing availability of engines with "-t" - the old behaviour is
2347 produced by increasing the feature's verbosity with "-tt".
2350 *) ECDSA routines: under certain error conditions uninitialized BN objects
2351 could be freed. Solution: make sure initialization is performed early
2352 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
2356 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
2357 and DH_METHOD (eg. by ENGINE implementations) to override the normal
2358 software implementations. For DSA and DH, parameter generation can
2359 also be overriden by providing the appropriate method callbacks.
2362 *) Change the "progress" mechanism used in key-generation and
2363 primality testing to functions that take a new BN_GENCB pointer in
2364 place of callback/argument pairs. The new API functions have "_ex"
2365 postfixes and the older functions are reimplemented as wrappers for
2366 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
2367 declarations of the old functions to help (graceful) attempts to
2368 migrate to the new functions. Also, the new key-generation API
2369 functions operate on a caller-supplied key-structure and return
2370 success/failure rather than returning a key or NULL - this is to
2371 help make "keygen" another member function of RSA_METHOD etc.
2373 Example for using the new callback interface:
2375 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
2379 BN_GENCB_set(&my_cb, my_callback, my_arg);
2381 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
2382 /* For the meaning of a, b in calls to my_callback(), see the
2383 * documentation of the function that calls the callback.
2384 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
2385 * my_callback should return 1 if it wants BN_is_prime_ex()
2386 * to continue, or 0 to stop.
2391 *) Change the ZLIB compression method to be stateful, and make it
2392 available to TLS with the number defined in
2393 draft-ietf-tls-compression-04.txt.
2396 *) Add the ASN.1 structures and functions for CertificatePair, which
2397 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
2399 CertificatePair ::= SEQUENCE {
2400 forward [0] Certificate OPTIONAL,
2401 reverse [1] Certificate OPTIONAL,
2402 -- at least one of the pair shall be present -- }
2404 Also implement the PEM functions to read and write certificate
2405 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
2407 This needed to be defined, mostly for the sake of the LDAP
2408 attribute crossCertificatePair, but may prove useful elsewhere as
2412 *) Make it possible to inhibit symlinking of shared libraries in
2413 Makefile.shared, for Cygwin's sake.
2416 *) Extend the BIGNUM API by creating a function
2417 void BN_set_negative(BIGNUM *a, int neg);
2418 and a macro that behave like
2419 int BN_is_negative(const BIGNUM *a);
2421 to avoid the need to access 'a->neg' directly in applications.
2424 *) Implement fast modular reduction for pseudo-Mersenne primes
2425 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
2426 EC_GROUP_new_curve_GFp() will now automatically use this
2428 [Nils Larsch <nla@trustcenter.de>]
2430 *) Add new lock type (CRYPTO_LOCK_BN).
2433 *) Change the ENGINE framework to automatically load engines
2434 dynamically from specific directories unless they could be
2435 found to already be built in or loaded. Move all the
2436 current engines except for the cryptodev one to a new
2438 The engines in engines/ are built as shared libraries if
2439 the "shared" options was given to ./Configure or ./config.
2440 Otherwise, they are inserted in libcrypto.a.
2441 /usr/local/ssl/engines is the default directory for dynamic
2442 engines, but that can be overriden at configure time through
2443 the usual use of --prefix and/or --openssldir, and at run
2444 time with the environment variable OPENSSL_ENGINES.
2445 [Geoff Thorpe and Richard Levitte]
2447 *) Add Makefile.shared, a helper makefile to build shared
2448 libraries. Addapt Makefile.org.
2451 *) Add version info to Win32 DLLs.
2452 [Peter 'Luna' Runestig" <peter@runestig.com>]
2454 *) Add new 'medium level' PKCS#12 API. Certificates and keys
2455 can be added using this API to created arbitrary PKCS#12
2456 files while avoiding the low level API.
2458 New options to PKCS12_create(), key or cert can be NULL and
2459 will then be omitted from the output file. The encryption
2460 algorithm NIDs can be set to -1 for no encryption, the mac
2461 iteration count can be set to 0 to omit the mac.
2463 Enhance pkcs12 utility by making the -nokeys and -nocerts
2464 options work when creating a PKCS#12 file. New option -nomac
2465 to omit the mac, NONE can be set for an encryption algorithm.
2466 New code is modified to use the enhanced PKCS12_create()
2467 instead of the low level API.
2470 *) Extend ASN1 encoder to support indefinite length constructed
2471 encoding. This can output sequences tags and octet strings in
2472 this form. Modify pk7_asn1.c to support indefinite length
2473 encoding. This is experimental and needs additional code to
2474 be useful, such as an ASN1 bio and some enhanced streaming
2477 Extend template encode functionality so that tagging is passed
2478 down to the template encoder.
2481 *) Let 'openssl req' fail if an argument to '-newkey' is not
2482 recognized instead of using RSA as a default.
2485 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
2486 As these are not official, they are not included in "ALL";
2487 the "ECCdraft" ciphersuite group alias can be used to select them.
2488 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
2490 *) Add ECDH engine support.
2491 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
2493 *) Add ECDH in new directory crypto/ecdh/.
2494 [Douglas Stebila (Sun Microsystems Laboratories)]
2496 *) Let BN_rand_range() abort with an error after 100 iterations
2497 without success (which indicates a broken PRNG).
2500 *) Change BN_mod_sqrt() so that it verifies that the input value
2501 is really the square of the return value. (Previously,
2502 BN_mod_sqrt would show GIGO behaviour.)
2505 *) Add named elliptic curves over binary fields from X9.62, SECG,
2506 and WAP/WTLS; add OIDs that were still missing.
2508 [Sheueling Chang Shantz and Douglas Stebila
2509 (Sun Microsystems Laboratories)]
2511 *) Extend the EC library for elliptic curves over binary fields
2512 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
2515 EC_GF2m_simple_method
2519 EC_GROUP_new_curve_GF2m
2520 EC_GROUP_set_curve_GF2m
2521 EC_GROUP_get_curve_GF2m
2522 EC_POINT_set_affine_coordinates_GF2m
2523 EC_POINT_get_affine_coordinates_GF2m
2524 EC_POINT_set_compressed_coordinates_GF2m
2526 Point compression for binary fields is disabled by default for
2527 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
2530 As binary polynomials are represented as BIGNUMs, various members
2531 of the EC_GROUP and EC_POINT data structures can be shared
2532 between the implementations for prime fields and binary fields;
2533 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
2534 are essentially identical to their ..._GFp counterparts.
2535 (For simplicity, the '..._GFp' prefix has been dropped from
2536 various internal method names.)
2538 An internal 'field_div' method (similar to 'field_mul' and
2539 'field_sqr') has been added; this is used only for binary fields.
2541 [Sheueling Chang Shantz and Douglas Stebila
2542 (Sun Microsystems Laboratories)]
2544 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
2545 through methods ('mul', 'precompute_mult').
2547 The generic implementations (now internally called 'ec_wNAF_mul'
2548 and 'ec_wNAF_precomputed_mult') remain the default if these
2549 methods are undefined.
2551 [Sheueling Chang Shantz and Douglas Stebila
2552 (Sun Microsystems Laboratories)]
2554 *) New function EC_GROUP_get_degree, which is defined through
2555 EC_METHOD. For curves over prime fields, this returns the bit
2556 length of the modulus.
2558 [Sheueling Chang Shantz and Douglas Stebila
2559 (Sun Microsystems Laboratories)]
2561 *) New functions EC_GROUP_dup, EC_POINT_dup.
2562 (These simply call ..._new and ..._copy).
2564 [Sheueling Chang Shantz and Douglas Stebila
2565 (Sun Microsystems Laboratories)]
2567 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
2568 Polynomials are represented as BIGNUMs (where the sign bit is not
2569 used) in the following functions [macros]:
2572 BN_GF2m_sub [= BN_GF2m_add]
2573 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2574 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2575 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2577 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2578 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2579 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2580 BN_GF2m_cmp [= BN_ucmp]
2582 (Note that only the 'mod' functions are actually for fields GF(2^m).
2583 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2585 For some functions, an the irreducible polynomial defining a
2586 field can be given as an 'unsigned int[]' with strictly
2587 decreasing elements giving the indices of those bits that are set;
2588 i.e., p[] represents the polynomial
2589 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2591 p[0] > p[1] > ... > p[k] = 0.
2592 This applies to the following functions:
2597 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2598 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2600 BN_GF2m_mod_sqrt_arr
2601 BN_GF2m_mod_solve_quad_arr
2605 Conversion can be performed by the following functions:
2610 bntest.c has additional tests for binary polynomial arithmetic.
2612 Two implementations for BN_GF2m_mod_div() are available.
2613 The default algorithm simply uses BN_GF2m_mod_inv() and
2614 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2615 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2616 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2618 [Sheueling Chang Shantz and Douglas Stebila
2619 (Sun Microsystems Laboratories)]
2621 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2622 functionality is disabled at compile-time.
2623 [Douglas Stebila <douglas.stebila@sun.com>]
2625 *) Change default behaviour of 'openssl asn1parse' so that more
2626 information is visible when viewing, e.g., a certificate:
2628 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2629 mode the content of non-printable OCTET STRINGs is output in a
2630 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2631 avoid the appearance of a printable string.
2632 [Nils Larsch <nla@trustcenter.de>]
2634 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2636 EC_GROUP_set_asn1_flag()
2637 EC_GROUP_get_asn1_flag()
2638 EC_GROUP_set_point_conversion_form()
2639 EC_GROUP_get_point_conversion_form()
2640 These control ASN1 encoding details:
2641 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2642 has been set to OPENSSL_EC_NAMED_CURVE.
2643 - Points are encoded in uncompressed form by default; options for
2644 asn1_for are as for point2oct, namely
2645 POINT_CONVERSION_COMPRESSED
2646 POINT_CONVERSION_UNCOMPRESSED
2647 POINT_CONVERSION_HYBRID
2649 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2652 EC_GROUP_get0_seed()
2653 EC_GROUP_get_seed_len()
2654 This is used only for ASN1 purposes (so far).
2655 [Nils Larsch <nla@trustcenter.de>]
2657 *) Add 'field_type' member to EC_METHOD, which holds the NID
2658 of the appropriate field type OID. The new function
2659 EC_METHOD_get_field_type() returns this value.
2660 [Nils Larsch <nla@trustcenter.de>]
2665 EC_POINT_point2hex()
2666 EC_POINT_hex2point()
2667 providing useful interfaces to EC_POINT_point2oct() and
2668 EC_POINT_oct2point().
2669 [Nils Larsch <nla@trustcenter.de>]
2671 *) Change internals of the EC library so that the functions
2672 EC_GROUP_set_generator()
2673 EC_GROUP_get_generator()
2674 EC_GROUP_get_order()
2675 EC_GROUP_get_cofactor()
2676 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2677 to methods, which would lead to unnecessary code duplication when
2678 adding different types of curves.
2679 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2681 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2682 arithmetic, and such that modified wNAFs are generated
2683 (which avoid length expansion in many cases).
2686 *) Add a function EC_GROUP_check_discriminant() (defined via
2687 EC_METHOD) that verifies that the curve discriminant is non-zero.
2689 Add a function EC_GROUP_check() that makes some sanity tests
2690 on a EC_GROUP, its generator and order. This includes
2691 EC_GROUP_check_discriminant().
2692 [Nils Larsch <nla@trustcenter.de>]
2694 *) Add ECDSA in new directory crypto/ecdsa/.
2696 Add applications 'openssl ecparam' and 'openssl ecdsa'
2697 (these are based on 'openssl dsaparam' and 'openssl dsa').
2699 ECDSA support is also included in various other files across the
2700 library. Most notably,
2701 - 'openssl req' now has a '-newkey ecdsa:file' option;
2702 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2703 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2704 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2705 them suitable for ECDSA where domain parameters must be
2706 extracted before the specific public key;
2707 - ECDSA engine support has been added.
2708 [Nils Larsch <nla@trustcenter.de>]
2710 *) Include some named elliptic curves, and add OIDs from X9.62,
2711 SECG, and WAP/WTLS. Each curve can be obtained from the new
2713 EC_GROUP_new_by_curve_name(),
2714 and the list of available named curves can be obtained with
2715 EC_get_builtin_curves().
2716 Also add a 'curve_name' member to EC_GROUP objects, which can be
2718 EC_GROUP_set_curve_name()
2719 EC_GROUP_get_curve_name()
2720 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2722 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2723 was actually never needed) and in BN_mul(). The removal in BN_mul()
2724 required a small change in bn_mul_part_recursive() and the addition
2725 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2726 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2727 bn_sub_words() and bn_add_words() except they take arrays with
2731 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2733 *) Cleanse PEM buffers before freeing them since they may contain
2735 [Benjamin Bennett <ben@psc.edu>]
2737 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2738 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2739 authentication-only ciphersuites.
2742 *) Since AES128 and AES256 share a single mask bit in the logic of
2743 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2744 kludge to work properly if AES128 is available and AES256 isn't.
2747 *) Expand security boundary to match 1.1.1 module.
2750 *) Remove redundant features: hash file source, editing of test vectors
2751 modify fipsld to use external fips_premain.c signature.
2754 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2755 run algorithm test programs.
2758 *) Make algorithm test programs more tolerant of whitespace.
2761 *) Have SSL/TLS server implementation tolerate "mismatched" record
2762 protocol version while receiving ClientHello even if the
2763 ClientHello is fragmented. (The server can't insist on the
2764 particular protocol version it has chosen before the ServerHello
2765 message has informed the client about his choice.)
2768 *) Load error codes if they are not already present instead of using a
2769 static variable. This allows them to be cleanly unloaded and reloaded.
2772 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2774 *) Introduce limits to prevent malicious keys being able to
2775 cause a denial of service. (CVE-2006-2940)
2776 [Steve Henson, Bodo Moeller]
2778 *) Fix ASN.1 parsing of certain invalid structures that can result
2779 in a denial of service. (CVE-2006-2937) [Steve Henson]
2781 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2782 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2784 *) Fix SSL client code which could crash if connecting to a
2785 malicious SSLv2 server. (CVE-2006-4343)
2786 [Tavis Ormandy and Will Drewry, Google Security Team]
2788 *) Change ciphersuite string processing so that an explicit
2789 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2790 will no longer include "AES128-SHA"), and any other similar
2791 ciphersuite (same bitmap) from *other* protocol versions (so that
2792 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2793 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2794 changes from 0.9.8b and 0.9.8d.
2797 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2799 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2800 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2802 *) Change the Unix randomness entropy gathering to use poll() when
2803 possible instead of select(), since the latter has some
2804 undesirable limitations.
2805 [Darryl Miles via Richard Levitte and Bodo Moeller]
2807 *) Disable rogue ciphersuites:
2809 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2810 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2811 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2813 The latter two were purportedly from
2814 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2817 Also deactive the remaining ciphersuites from
2818 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2819 unofficial, and the ID has long expired.
2822 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2823 dual-core machines) and other potential thread-safety issues.
2826 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2828 *) Adapt fipsld and the build system to link against the validated FIPS
2829 module in FIPS mode.
2832 *) Fixes for VC++ 2005 build under Windows.
2835 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2836 from a Windows bash shell such as MSYS. It is autodetected from the
2837 "config" script when run from a VC++ environment. Modify standard VC++
2838 build to use fipscanister.o from the GNU make build.
2841 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2843 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2844 The value now differs depending on if you build for FIPS or not.
2845 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2846 safely run with a non-FIPSed libcrypto, as it may crash because of
2847 the difference induced by this change.
2850 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2852 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2853 (part of SSL_OP_ALL). This option used to disable the
2854 countermeasure against man-in-the-middle protocol-version
2855 rollback in the SSL 2.0 server implementation, which is a bad
2856 idea. (CVE-2005-2969)
2858 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2859 for Information Security, National Institute of Advanced Industrial
2860 Science and Technology [AIST], Japan)]
2862 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2863 mainly for FIPS compliance and not fully integrated at this stage.
2866 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2867 the exponentiation using a fixed-length exponent. (Otherwise,
2868 the information leaked through timing could expose the secret key
2869 after many signatures; cf. Bleichenbacher's attack on DSA with
2873 *) Make a new fixed-window mod_exp implementation the default for
2874 RSA, DSA, and DH private-key operations so that the sequence of
2875 squares and multiplies and the memory access pattern are
2876 independent of the particular secret key. This will mitigate
2877 cache-timing and potential related attacks.
2879 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2880 and this is automatically used by BN_mod_exp_mont() if the new flag
2881 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2882 will use this BN flag for private exponents unless the flag
2883 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2884 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2886 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2888 *) Change the client implementation for SSLv23_method() and
2889 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2890 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2891 (Previously, the SSL 2.0 backwards compatible Client Hello
2892 message format would be used even with SSL_OP_NO_SSLv2.)
2895 *) Add support for smime-type MIME parameter in S/MIME messages which some
2899 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2900 a threadsafe manner. Modify rsa code to use new function and add calls
2901 to dsa and dh code (which had race conditions before).
2904 *) Include the fixed error library code in the C error file definitions
2905 instead of fixing them up at runtime. This keeps the error code
2906 structures constant.
2909 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2911 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2914 *) Fixes for newer kerberos headers. NB: the casts are needed because
2915 the 'length' field is signed on one version and unsigned on another
2916 with no (?) obvious way to tell the difference, without these VC++
2917 complains. Also the "definition" of FAR (blank) is no longer included
2918 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2919 some needed definitions.
2922 *) Undo Cygwin change.
2925 *) Added support for proxy certificates according to RFC 3820.
2926 Because they may be a security thread to unaware applications,
2927 they must be explicitely allowed in run-time. See
2928 docs/HOWTO/proxy_certificates.txt for further information.
2931 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2933 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2934 server and client random values. Previously
2935 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2936 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2938 This change has negligible security impact because:
2940 1. Server and client random values still have 24 bytes of pseudo random
2943 2. Server and client random values are sent in the clear in the initial
2946 3. The master secret is derived using the premaster secret (48 bytes in
2947 size for static RSA ciphersuites) as well as client server and random
2950 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2953 [Stephen Henson, reported by UK NISCC]
2955 *) Use Windows randomness collection on Cygwin.
2958 *) Fix hang in EGD/PRNGD query when communication socket is closed
2959 prematurely by EGD/PRNGD.
2960 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2962 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2965 *) Back-port of selected performance improvements from development
2966 branch, as well as improved support for PowerPC platforms.
2969 *) Add lots of checks for memory allocation failure, error codes to indicate
2970 failure and freeing up memory if a failure occurs.
2971 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2973 *) Add new -passin argument to dgst.
2976 *) Perform some character comparisons of different types in X509_NAME_cmp:
2977 this is needed for some certificates that reencode DNs into UTF8Strings
2978 (in violation of RFC3280) and can't or wont issue name rollover
2982 *) Make an explicit check during certificate validation to see that
2983 the CA setting in each certificate on the chain is correct. As a
2984 side effect always do the following basic checks on extensions,
2985 not just when there's an associated purpose to the check:
2987 - if there is an unhandled critical extension (unless the user
2988 has chosen to ignore this fault)
2989 - if the path length has been exceeded (if one is set at all)
2990 - that certain extensions fit the associated purpose (if one has
2994 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2996 *) Avoid a race condition when CRLs are checked in a multi threaded
2997 environment. This would happen due to the reordering of the revoked
2998 entries during signature checking and serial number lookup. Now the
2999 encoding is cached and the serial number sort performed under a lock.
3000 Add new STACK function sk_is_sorted().
3003 *) Add Delta CRL to the extension code.
3006 *) Various fixes to s3_pkt.c so alerts are sent properly.
3007 [David Holmes <d.holmes@f5.com>]
3009 *) Reduce the chances of duplicate issuer name and serial numbers (in
3010 violation of RFC3280) using the OpenSSL certificate creation utilities.
3011 This is done by creating a random 64 bit value for the initial serial
3012 number when a serial number file is created or when a self signed
3013 certificate is created using 'openssl req -x509'. The initial serial
3014 number file is created using 'openssl x509 -next_serial' in CA.pl
3015 rather than being initialized to 1.
3018 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
3020 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
3021 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
3022 [Joe Orton, Steve Henson]
3024 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
3026 [Joe Orton, Steve Henson]
3028 *) Make it possible to have multiple active certificates with the same
3029 subject in the CA index file. This is done only if the keyword
3030 'unique_subject' is set to 'no' in the main CA section (default
3031 if 'CA_default') of the configuration file. The value is saved
3032 with the database itself in a separate index attribute file,
3033 named like the index file with '.attr' appended to the name.
3036 *) X509 verify fixes. Disable broken certificate workarounds when
3037 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
3038 keyUsage extension present. Don't accept CRLs with unhandled critical
3039 extensions: since verify currently doesn't process CRL extensions this
3040 rejects a CRL with *any* critical extensions. Add new verify error codes
3044 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
3045 A clarification of RFC2560 will require the use of OCTET STRINGs and
3046 some implementations cannot handle the current raw format. Since OpenSSL
3047 copies and compares OCSP nonces as opaque blobs without any attempt at
3048 parsing them this should not create any compatibility issues.
3051 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
3052 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
3053 this HMAC (and other) operations are several times slower than OpenSSL
3057 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
3058 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3060 *) Use the correct content when signing type "other".
3063 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
3065 *) Fix various bugs revealed by running the NISCC test suite:
3067 Stop out of bounds reads in the ASN1 code when presented with
3068 invalid tags (CVE-2003-0543 and CVE-2003-0544).
3070 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
3072 If verify callback ignores invalid public key errors don't try to check
3073 certificate signature with the NULL public key.
3077 *) New -ignore_err option in ocsp application to stop the server
3078 exiting on the first error in a request.
3081 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
3082 if the server requested one: as stated in TLS 1.0 and SSL 3.0
3086 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
3087 extra data after the compression methods not only for TLS 1.0
3088 but also for SSL 3.0 (as required by the specification).
3089 [Bodo Moeller; problem pointed out by Matthias Loepfe]
3091 *) Change X509_certificate_type() to mark the key as exported/exportable
3092 when it's 512 *bits* long, not 512 bytes.
3095 *) Change AES_cbc_encrypt() so it outputs exact multiple of
3096 blocks during encryption.
3099 *) Various fixes to base64 BIO and non blocking I/O. On write
3100 flushes were not handled properly if the BIO retried. On read
3101 data was not being buffered properly and had various logic bugs.
3102 This also affects blocking I/O when the data being decoded is a
3106 *) Various S/MIME bugfixes and compatibility changes:
3107 output correct application/pkcs7 MIME type if
3108 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
3109 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
3110 of files as .eml work). Correctly handle very long lines in MIME
3114 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
3116 *) Countermeasure against the Klima-Pokorny-Rosa extension of
3117 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
3118 a protocol version number mismatch like a decryption error
3119 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
3122 *) Turn on RSA blinding by default in the default implementation
3123 to avoid a timing attack. Applications that don't want it can call
3124 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
3125 They would be ill-advised to do so in most cases.
3126 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
3128 *) Change RSA blinding code so that it works when the PRNG is not
3129 seeded (in this case, the secret RSA exponent is abused as
3130 an unpredictable seed -- if it is not unpredictable, there
3131 is no point in blinding anyway). Make RSA blinding thread-safe
3132 by remembering the creator's thread ID in rsa->blinding and
3133 having all other threads use local one-time blinding factors
3134 (this requires more computation than sharing rsa->blinding, but
3135 avoids excessive locking; and if an RSA object is not shared
3136 between threads, blinding will still be very fast).
3139 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
3140 ENGINE as defaults for all supported algorithms irrespective of
3141 the 'flags' parameter. 'flags' is now honoured, so applications
3142 should make sure they are passing it correctly.
3145 *) Target "mingw" now allows native Windows code to be generated in
3146 the Cygwin environment as well as with the MinGW compiler.
3149 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
3151 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
3152 via timing by performing a MAC computation even if incorrrect
3153 block cipher padding has been found. This is a countermeasure
3154 against active attacks where the attacker has to distinguish
3155 between bad padding and a MAC verification error. (CVE-2003-0078)
3157 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
3158 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
3159 Martin Vuagnoux (EPFL, Ilion)]
3161 *) Make the no-err option work as intended. The intention with no-err
3162 is not to have the whole error stack handling routines removed from
3163 libcrypto, it's only intended to remove all the function name and
3164 reason texts, thereby removing some of the footprint that may not
3165 be interesting if those errors aren't displayed anyway.
3167 NOTE: it's still possible for any application or module to have it's
3168 own set of error texts inserted. The routines are there, just not
3169 used by default when no-err is given.
3172 *) Add support for FreeBSD on IA64.
3173 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
3175 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
3176 Kerberos function mit_des_cbc_cksum(). Before this change,
3177 the value returned by DES_cbc_cksum() was like the one from
3178 mit_des_cbc_cksum(), except the bytes were swapped.
3179 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
3181 *) Allow an application to disable the automatic SSL chain building.
3182 Before this a rather primitive chain build was always performed in
3183 ssl3_output_cert_chain(): an application had no way to send the
3184 correct chain if the automatic operation produced an incorrect result.
3186 Now the chain builder is disabled if either:
3188 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
3190 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
3192 The reasoning behind this is that an application would not want the
3193 auto chain building to take place if extra chain certificates are
3194 present and it might also want a means of sending no additional
3195 certificates (for example the chain has two certificates and the
3199 *) Add the possibility to build without the ENGINE framework.
3200 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3202 *) Under Win32 gmtime() can return NULL: check return value in
3203 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
3206 *) DSA routines: under certain error conditions uninitialized BN objects
3207 could be freed. Solution: make sure initialization is performed early
3208 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
3209 Nils Larsch <nla@trustcenter.de> via PR#459)
3212 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
3213 checked on reconnect on the client side, therefore session resumption
3214 could still fail with a "ssl session id is different" error. This
3215 behaviour is masked when SSL_OP_ALL is used due to
3216 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
3217 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3218 followup to PR #377.
3221 *) IA-32 assembler support enhancements: unified ELF targets, support
3222 for SCO/Caldera platforms, fix for Cygwin shared build.
3225 *) Add support for FreeBSD on sparc64. As a consequence, support for
3226 FreeBSD on non-x86 processors is separate from x86 processors on
3227 the config script, much like the NetBSD support.
3228 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
3230 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
3232 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
3235 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
3236 code (06) was taken as the first octet of the session ID and the last
3237 octet was ignored consequently. As a result SSLv2 client side session
3238 caching could not have worked due to the session ID mismatch between
3240 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
3244 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
3245 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
3249 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
3250 seems that in spite of existing for more than a year, many application
3251 author have done nothing to provide the necessary callbacks, which
3252 means that this particular engine will not work properly anywhere.
3253 This is a very unfortunate situation which forces us, in the name
3254 of usability, to give the hw_ncipher.c a static lock, which is part
3256 NOTE: This is for the 0.9.7 series ONLY. This hack will never
3257 appear in 0.9.8 or later. We EXPECT application authors to have
3258 dealt properly with this when 0.9.8 is released (unless we actually
3259 make such changes in the libcrypto locking code that changes will
3260 have to be made anyway).
3263 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
3264 octets have been read, EOF or an error occurs. Without this change
3265 some truncated ASN1 structures will not produce an error.
3268 *) Disable Heimdal support, since it hasn't been fully implemented.
3269 Still give the possibility to force the use of Heimdal, but with
3270 warnings and a request that patches get sent to openssl-dev.
3273 *) Add the VC-CE target, introduce the WINCE sysname, and add
3274 INSTALL.WCE and appropriate conditionals to make it build.
3275 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
3277 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
3278 cygssl-x.y.z.dll, where x, y and z are the major, minor and
3279 edit numbers of the version.
3280 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
3282 *) Introduce safe string copy and catenation functions
3283 (BUF_strlcpy() and BUF_strlcat()).
3284 [Ben Laurie (CHATS) and Richard Levitte]
3286 *) Avoid using fixed-size buffers for one-line DNs.
3287 [Ben Laurie (CHATS)]
3289 *) Add BUF_MEM_grow_clean() to avoid information leakage when
3290 resizing buffers containing secrets, and use where appropriate.
3291 [Ben Laurie (CHATS)]
3293 *) Avoid using fixed size buffers for configuration file location.
3294 [Ben Laurie (CHATS)]
3296 *) Avoid filename truncation for various CA files.
3297 [Ben Laurie (CHATS)]
3299 *) Use sizeof in preference to magic numbers.
3300 [Ben Laurie (CHATS)]
3302 *) Avoid filename truncation in cert requests.
3303 [Ben Laurie (CHATS)]
3305 *) Add assertions to check for (supposedly impossible) buffer
3307 [Ben Laurie (CHATS)]
3309 *) Don't cache truncated DNS entries in the local cache (this could
3310 potentially lead to a spoofing attack).
3311 [Ben Laurie (CHATS)]
3313 *) Fix various buffers to be large enough for hex/decimal
3314 representations in a platform independent manner.
3315 [Ben Laurie (CHATS)]
3317 *) Add CRYPTO_realloc_clean() to avoid information leakage when
3318 resizing buffers containing secrets, and use where appropriate.
3319 [Ben Laurie (CHATS)]
3321 *) Add BIO_indent() to avoid much slightly worrying code to do
3323 [Ben Laurie (CHATS)]
3325 *) Convert sprintf()/BIO_puts() to BIO_printf().
3326 [Ben Laurie (CHATS)]
3328 *) buffer_gets() could terminate with the buffer only half
3330 [Ben Laurie (CHATS)]
3332 *) Add assertions to prevent user-supplied crypto functions from
3333 overflowing internal buffers by having large block sizes, etc.
3334 [Ben Laurie (CHATS)]
3336 *) New OPENSSL_assert() macro (similar to assert(), but enabled
3338 [Ben Laurie (CHATS)]
3340 *) Eliminate unused copy of key in RC4.
3341 [Ben Laurie (CHATS)]
3343 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
3344 [Ben Laurie (CHATS)]
3346 *) Fix off-by-one error in EGD path.
3347 [Ben Laurie (CHATS)]
3349 *) If RANDFILE path is too long, ignore instead of truncating.
3350 [Ben Laurie (CHATS)]
3352 *) Eliminate unused and incorrectly sized X.509 structure
3354 [Ben Laurie (CHATS)]
3356 *) Eliminate unused and dangerous function knumber().
3357 [Ben Laurie (CHATS)]
3359 *) Eliminate unused and dangerous structure, KSSL_ERR.
3360 [Ben Laurie (CHATS)]
3362 *) Protect against overlong session ID context length in an encoded
3363 session object. Since these are local, this does not appear to be
3365 [Ben Laurie (CHATS)]
3367 *) Change from security patch (see 0.9.6e below) that did not affect
3368 the 0.9.6 release series:
3370 Remote buffer overflow in SSL3 protocol - an attacker could
3371 supply an oversized master key in Kerberos-enabled versions.
3373 [Ben Laurie (CHATS)]
3375 *) Change the SSL kerb5 codes to match RFC 2712.
3378 *) Make -nameopt work fully for req and add -reqopt switch.
3379 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
3381 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
3382 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
3384 *) Make sure tests can be performed even if the corresponding algorithms
3385 have been removed entirely. This was also the last step to make
3386 OpenSSL compilable with DJGPP under all reasonable conditions.
3387 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
3389 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
3390 to allow version independent disabling of normally unselected ciphers,
3391 which may be activated as a side-effect of selecting a single cipher.
3393 (E.g., cipher list string "RSA" enables ciphersuites that are left
3394 out of "ALL" because they do not provide symmetric encryption.
3395 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
3396 [Lutz Jaenicke, Bodo Moeller]
3398 *) Add appropriate support for separate platform-dependent build
3399 directories. The recommended way to make a platform-dependent
3400 build directory is the following (tested on Linux), maybe with
3403 # Place yourself outside of the OpenSSL source tree. In
3404 # this example, the environment variable OPENSSL_SOURCE
3405 # is assumed to contain the absolute OpenSSL source directory.
3406 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
3407 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
3408 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
3409 mkdir -p `dirname $F`
3410 ln -s $OPENSSL_SOURCE/$F $F
3413 To be absolutely sure not to disturb the source tree, a "make clean"
3414 is a good thing. If it isn't successfull, don't worry about it,
3415 it probably means the source directory is very clean.
3418 *) Make sure any ENGINE control commands make local copies of string
3419 pointers passed to them whenever necessary. Otherwise it is possible
3420 the caller may have overwritten (or deallocated) the original string
3421 data when a later ENGINE operation tries to use the stored values.
3422 [Götz Babin-Ebell <babinebell@trustcenter.de>]
3424 *) Improve diagnostics in file reading and command-line digests.
3425 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
3427 *) Add AES modes CFB and OFB to the object database. Correct an
3428 error in AES-CFB decryption.
3431 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
3432 allows existing EVP_CIPHER_CTX structures to be reused after
3433 calling EVP_*Final(). This behaviour is used by encryption
3434 BIOs and some applications. This has the side effect that
3435 applications must explicitly clean up cipher contexts with
3436 EVP_CIPHER_CTX_cleanup() or they will leak memory.
3439 *) Check the values of dna and dnb in bn_mul_recursive before calling
3440 bn_mul_comba (a non zero value means the a or b arrays do not contain
3441 n2 elements) and fallback to bn_mul_normal if either is not zero.
3444 *) Fix escaping of non-ASCII characters when using the -subj option
3445 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
3448 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
3449 form for "surname", serialNumber has no short form.
3450 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
3451 therefore remove "mail" short name for "internet 7".
3452 The OID for unique identifiers in X509 certificates is
3453 x500UniqueIdentifier, not uniqueIdentifier.
3454 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
3457 *) Add an "init" command to the ENGINE config module and auto initialize
3458 ENGINEs. Without any "init" command the ENGINE will be initialized
3459 after all ctrl commands have been executed on it. If init=1 the
3460 ENGINE is initailized at that point (ctrls before that point are run
3461 on the uninitialized ENGINE and after on the initialized one). If
3462 init=0 then the ENGINE will not be iniatialized at all.
3465 *) Fix the 'app_verify_callback' interface so that the user-defined
3466 argument is actually passed to the callback: In the
3467 SSL_CTX_set_cert_verify_callback() prototype, the callback
3468 declaration has been changed from
3471 int (*cb)(X509_STORE_CTX *,void *);
3472 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
3473 i=s->ctx->app_verify_callback(&ctx)
3474 has been changed into
3475 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
3477 To update applications using SSL_CTX_set_cert_verify_callback(),
3478 a dummy argument can be added to their callback functions.
3479 [D. K. Smetters <smetters@parc.xerox.com>]
3481 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
3482 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
3484 *) Add and OPENSSL_LOAD_CONF define which will cause
3485 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
3486 This allows older applications to transparently support certain
3487 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
3488 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
3489 load the config file and OPENSSL_add_all_algorithms_conf() which will
3490 always load it have also been added.
3493 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
3494 Adjust NIDs and EVP layer.
3495 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3497 *) Config modules support in openssl utility.
3499 Most commands now load modules from the config file,
3500 though in a few (such as version) this isn't done
3501 because it couldn't be used for anything.
3503 In the case of ca and req the config file used is
3504 the same as the utility itself: that is the -config
3505 command line option can be used to specify an
3509 *) Move default behaviour from OPENSSL_config(). If appname is NULL
3510 use "openssl_conf" if filename is NULL use default openssl config file.
3513 *) Add an argument to OPENSSL_config() to allow the use of an alternative
3514 config section name. Add a new flag to tolerate a missing config file
3515 and move code to CONF_modules_load_file().
3518 *) Support for crypto accelerator cards from Accelerated Encryption
3519 Processing, www.aep.ie. (Use engine 'aep')
3520 The support was copied from 0.9.6c [engine] and adapted/corrected
3521 to work with the new engine framework.
3522 [AEP Inc. and Richard Levitte]
3524 *) Support for SureWare crypto accelerator cards from Baltimore
3525 Technologies. (Use engine 'sureware')
3526 The support was copied from 0.9.6c [engine] and adapted
3527 to work with the new engine framework.
3530 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
3531 make the newer ENGINE framework commands for the CHIL engine work.
3532 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
3534 *) Make it possible to produce shared libraries on ReliantUNIX.
3535 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
3537 *) Add the configuration target debug-linux-ppro.
3538 Make 'openssl rsa' use the general key loading routines
3539 implemented in apps.c, and make those routines able to
3540 handle the key format FORMAT_NETSCAPE and the variant
3542 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3544 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
3545 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
3547 *) Add -keyform to rsautl, and document -engine.
3548 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
3550 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
3551 BIO_R_NO_SUCH_FILE error code rather than the generic
3552 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
3555 *) Add new functions
3557 ERR_peek_last_error_line
3558 ERR_peek_last_error_line_data.
3559 These are similar to
3562 ERR_peek_error_line_data,
3563 but report on the latest error recorded rather than the first one
3564 still in the error queue.
3565 [Ben Laurie, Bodo Moeller]
3567 *) default_algorithms option in ENGINE config module. This allows things
3569 default_algorithms = ALL
3570 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3573 *) Prelminary ENGINE config module.
3576 *) New experimental application configuration code.
3579 *) Change the AES code to follow the same name structure as all other
3580 symmetric ciphers, and behave the same way. Move everything to
3581 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3582 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3584 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3585 [Ben Laurie and Theo de Raadt]
3587 *) Add option to output public keys in req command.
3588 [Massimiliano Pala madwolf@openca.org]
3590 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3591 (up to about 10% better than before for P-192 and P-224).
3594 *) New functions/macros
3596 SSL_CTX_set_msg_callback(ctx, cb)
3597 SSL_CTX_set_msg_callback_arg(ctx, arg)
3598 SSL_set_msg_callback(ssl, cb)
3599 SSL_set_msg_callback_arg(ssl, arg)
3601 to request calling a callback function
3603 void cb(int write_p, int version, int content_type,
3604 const void *buf, size_t len, SSL *ssl, void *arg)
3606 whenever a protocol message has been completely received
3607 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3608 protocol version according to which the SSL library interprets
3609 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3610 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3611 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3612 specification (change_cipher_spec(20), alert(21), handshake(22)).
3613 'buf' and 'len' point to the actual message, 'ssl' to the
3614 SSL object, and 'arg' is the application-defined value set by
3615 SSL[_CTX]_set_msg_callback_arg().
3617 'openssl s_client' and 'openssl s_server' have new '-msg' options
3618 to enable a callback that displays all protocol messages.
3621 *) Change the shared library support so shared libraries are built as
3622 soon as the corresponding static library is finished, and thereby get
3623 openssl and the test programs linked against the shared library.
3624 This still only happens when the keyword "shard" has been given to
3625 the configuration scripts.
3627 NOTE: shared library support is still an experimental thing, and
3628 backward binary compatibility is still not guaranteed.
3629 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3631 *) Add support for Subject Information Access extension.
3632 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3634 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3635 additional bytes when new memory had to be allocated, not just
3636 when reusing an existing buffer.
3639 *) New command line and configuration option 'utf8' for the req command.
3640 This allows field values to be specified as UTF8 strings.
3643 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3644 runs for the former and machine-readable output for the latter.
3647 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3648 of the e-mail address in the DN (i.e., it will go into a certificate
3649 extension only). The new configuration file option 'email_in_dn = no'
3650 has the same effect.
3651 [Massimiliano Pala madwolf@openca.org]
3653 *) Change all functions with names starting with des_ to be starting
3654 with DES_ instead. Add wrappers that are compatible with libdes,
3655 but are named _ossl_old_des_*. Finally, add macros that map the
3656 des_* symbols to the corresponding _ossl_old_des_* if libdes
3657 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3658 desired, the des_* symbols will be mapped to DES_*, with one
3661 Since we provide two compatibility mappings, the user needs to
3662 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3663 compatibility is desired. The default (i.e., when that macro
3664 isn't defined) is OpenSSL 0.9.6c compatibility.
3666 There are also macros that enable and disable the support of old
3667 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3668 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3669 are defined, the default will apply: to support the old des routines.
3671 In either case, one must include openssl/des.h to get the correct
3672 definitions. Do not try to just include openssl/des_old.h, that
3675 NOTE: This is a major break of an old API into a new one. Software
3676 authors are encouraged to switch to the DES_ style functions. Some
3677 time in the future, des_old.h and the libdes compatibility functions
3678 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3679 default), and then completely removed.
3682 *) Test for certificates which contain unsupported critical extensions.
3683 If such a certificate is found during a verify operation it is
3684 rejected by default: this behaviour can be overridden by either
3685 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3686 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3687 X509_supported_extension() has also been added which returns 1 if a
3688 particular extension is supported.
3691 *) Modify the behaviour of EVP cipher functions in similar way to digests
3692 to retain compatibility with existing code.
3695 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3696 compatibility with existing code. In particular the 'ctx' parameter does
3697 not have to be to be initialized before the call to EVP_DigestInit() and
3698 it is tidied up after a call to EVP_DigestFinal(). New function
3699 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3700 EVP_MD_CTX_copy() changed to not require the destination to be
3701 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3702 requires the destination to be valid.
3704 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3705 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3708 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3709 so that complete 'Handshake' protocol structures are kept in memory
3710 instead of overwriting 'msg_type' and 'length' with 'body' data.
3713 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3714 [Massimo Santin via Richard Levitte]
3716 *) Major restructuring to the underlying ENGINE code. This includes
3717 reduction of linker bloat, separation of pure "ENGINE" manipulation
3718 (initialisation, etc) from functionality dealing with implementations
3719 of specific crypto iterfaces. This change also introduces integrated
3720 support for symmetric ciphers and digest implementations - so ENGINEs
3721 can now accelerate these by providing EVP_CIPHER and EVP_MD
3722 implementations of their own. This is detailed in crypto/engine/README
3723 as it couldn't be adequately described here. However, there are a few
3724 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3725 were changed in the original introduction of ENGINE code have now
3726 reverted back - the hooking from this code to ENGINE is now a good
3727 deal more passive and at run-time, operations deal directly with
3728 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3729 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3730 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3731 they were not being used by the framework as there is no concept of a
3732 BIGNUM_METHOD and they could not be generalised to the new
3733 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3734 ENGINE_cpy() has been removed as it cannot be consistently defined in
3738 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3741 *) Change mkdef.pl to sort symbols that get the same entry number,
3742 and make sure the automatically generated functions ERR_load_*
3743 become part of libeay.num as well.
3746 *) New function SSL_renegotiate_pending(). This returns true once
3747 renegotiation has been requested (either SSL_renegotiate() call
3748 or HelloRequest/ClientHello receveived from the peer) and becomes
3749 false once a handshake has been completed.
3750 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3751 sends a HelloRequest, but does not ensure that a handshake takes
3752 place. SSL_renegotiate_pending() is useful for checking if the
3753 client has followed the request.)
3756 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3757 By default, clients may request session resumption even during
3758 renegotiation (if session ID contexts permit); with this option,
3759 session resumption is possible only in the first handshake.
3761 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3762 more bits available for options that should not be part of
3763 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3766 *) Add some demos for certificate and certificate request creation.
3769 *) Make maximum certificate chain size accepted from the peer application
3770 settable (SSL*_get/set_max_cert_list()), as proposed by
3771 "Douglas E. Engert" <deengert@anl.gov>.
3774 *) Add support for shared libraries for Unixware-7
3775 (Boyd Lynn Gerber <gerberb@zenez.com>).
3778 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3779 be done prior to destruction. Use this to unload error strings from
3780 ENGINEs that load their own error strings. NB: This adds two new API
3781 functions to "get" and "set" this destroy handler in an ENGINE.
3784 *) Alter all existing ENGINE implementations (except "openssl" and
3785 "openbsd") to dynamically instantiate their own error strings. This
3786 makes them more flexible to be built both as statically-linked ENGINEs
3787 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3788 Also, add stub code to each that makes building them as self-contained
3789 shared-libraries easier (see README.ENGINE).
3792 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3793 implementations into applications that are completely implemented in
3794 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3795 commands that can be used to configure what shared-library to load and
3796 to control aspects of the way it is handled. Also, made an update to
3797 the README.ENGINE file that brings its information up-to-date and
3798 provides some information and instructions on the "dynamic" ENGINE
3799 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3802 *) Make it possible to unload ranges of ERR strings with a new
3803 "ERR_unload_strings" function.
3806 *) Add a copy() function to EVP_MD.
3809 *) Make EVP_MD routines take a context pointer instead of just the
3810 md_data void pointer.
3813 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3814 that the digest can only process a single chunk of data
3815 (typically because it is provided by a piece of
3816 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3817 is only going to provide a single chunk of data, and hence the
3818 framework needn't accumulate the data for oneshot drivers.
3821 *) As with "ERR", make it possible to replace the underlying "ex_data"
3822 functions. This change also alters the storage and management of global
3823 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3824 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3825 index counters. The API functions that use this state have been changed
3826 to take a "class_index" rather than pointers to the class's local STACK
3827 and counter, and there is now an API function to dynamically create new
3828 classes. This centralisation allows us to (a) plug a lot of the
3829 thread-safety problems that existed, and (b) makes it possible to clean
3830 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3831 such data would previously have always leaked in application code and
3832 workarounds were in place to make the memory debugging turn a blind eye
3833 to it. Application code that doesn't use this new function will still
3834 leak as before, but their memory debugging output will announce it now
3835 rather than letting it slide.
3837 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3838 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3839 has a return value to indicate success or failure.
3842 *) Make it possible to replace the underlying "ERR" functions such that the
3843 global state (2 LHASH tables and 2 locks) is only used by the "default"
3844 implementation. This change also adds two functions to "get" and "set"
3845 the implementation prior to it being automatically set the first time
3846 any other ERR function takes place. Ie. an application can call "get",
3847 pass the return value to a module it has just loaded, and that module
3848 can call its own "set" function using that value. This means the
3849 module's "ERR" operations will use (and modify) the error state in the
3850 application and not in its own statically linked copy of OpenSSL code.
3853 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3854 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3855 the operation, and provides a more encapsulated way for external code
3856 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3857 to use these functions rather than manually incrementing the counts.
3859 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3862 *) Add EVP test program.
3865 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3868 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3869 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3870 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3871 These allow a CRL to be built without having to access X509_CRL fields
3872 directly. Modify 'ca' application to use new functions.
3875 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3876 bug workarounds. Rollback attack detection is a security feature.
3877 The problem will only arise on OpenSSL servers when TLSv1 is not
3878 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3879 Software authors not wanting to support TLSv1 will have special reasons
3880 for their choice and can explicitly enable this option.
3881 [Bodo Moeller, Lutz Jaenicke]
3883 *) Rationalise EVP so it can be extended: don't include a union of
3884 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3885 (similar to those existing for EVP_CIPHER_CTX).
3890 EVP_MD_CTX_init(&md); /* new function call */
3891 EVP_DigestInit(&md, EVP_sha1());
3892 EVP_DigestUpdate(&md, in, len);
3893 EVP_DigestFinal(&md, out, NULL);
3894 EVP_MD_CTX_cleanup(&md); /* new function call */
3898 *) Make DES key schedule conform to the usual scheme, as well as
3899 correcting its structure. This means that calls to DES functions
3900 now have to pass a pointer to a des_key_schedule instead of a
3901 plain des_key_schedule (which was actually always a pointer
3904 des_key_schedule ks;
3906 des_set_key_checked(..., &ks);
3907 des_ncbc_encrypt(..., &ks, ...);
3909 (Note that a later change renames 'des_...' into 'DES_...'.)
3912 *) Initial reduction of linker bloat: the use of some functions, such as
3913 PEM causes large amounts of unused functions to be linked in due to
3914 poor organisation. For example pem_all.c contains every PEM function
3915 which has a knock on effect of linking in large amounts of (unused)
3916 ASN1 code. Grouping together similar functions and splitting unrelated
3917 functions prevents this.
3920 *) Cleanup of EVP macros.
3923 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3924 correct _ecb suffix.
3927 *) Add initial OCSP responder support to ocsp application. The
3928 revocation information is handled using the text based index
3929 use by the ca application. The responder can either handle
3930 requests generated internally, supplied in files (for example
3931 via a CGI script) or using an internal minimal server.
3934 *) Add configuration choices to get zlib compression for TLS.
3937 *) Changes to Kerberos SSL for RFC 2712 compliance:
3938 1. Implemented real KerberosWrapper, instead of just using
3939 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3940 2. Implemented optional authenticator field of KerberosWrapper.
3942 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3943 and authenticator structs; see crypto/krb5/.
3945 Generalized Kerberos calls to support multiple Kerberos libraries.
3946 [Vern Staats <staatsvr@asc.hpc.mil>,
3947 Jeffrey Altman <jaltman@columbia.edu>
3948 via Richard Levitte]
3950 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3951 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3952 values for each of the key sizes rather than having just
3953 parameters (and 'speed' generating keys each time).
3956 *) Speed up EVP routines.
3959 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3960 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3961 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3962 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3964 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3965 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3966 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3969 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3971 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3974 *) Added the OS2-EMX target.
3975 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3977 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3978 to support NCONF routines in extension code. New function CONF_set_nconf()
3979 to allow functions which take an NCONF to also handle the old LHASH
3980 structure: this means that the old CONF compatible routines can be
3981 retained (in particular wrt extensions) without having to duplicate the
3982 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3985 *) Enhance the general user interface with mechanisms for inner control
3986 and with possibilities to have yes/no kind of prompts.
3989 *) Change all calls to low level digest routines in the library and
3990 applications to use EVP. Add missing calls to HMAC_cleanup() and
3991 don't assume HMAC_CTX can be copied using memcpy().
3992 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3994 *) Add the possibility to control engines through control names but with
3995 arbitrary arguments instead of just a string.
3996 Change the key loaders to take a UI_METHOD instead of a callback
3997 function pointer. NOTE: this breaks binary compatibility with earlier
3998 versions of OpenSSL [engine].
3999 Adapt the nCipher code for these new conditions and add a card insertion
4003 *) Enhance the general user interface with mechanisms to better support
4004 dialog box interfaces, application-defined prompts, the possibility
4005 to use defaults (for example default passwords from somewhere else)
4006 and interrupts/cancellations.
4009 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
4010 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
4013 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
4014 tidy up some unnecessarily weird code in 'sk_new()').
4015 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
4017 *) Change the key loading routines for ENGINEs to use the same kind
4018 callback (pem_password_cb) as all other routines that need this
4022 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
4023 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
4024 than this minimum value is recommended.
4027 *) New random seeder for OpenVMS, using the system process statistics
4028 that are easily reachable.
4031 *) Windows apparently can't transparently handle global
4032 variables defined in DLLs. Initialisations such as:
4034 const ASN1_ITEM *it = &ASN1_INTEGER_it;
4036 wont compile. This is used by the any applications that need to
4037 declare their own ASN1 modules. This was fixed by adding the option
4038 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
4039 needed for static libraries under Win32.
4042 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
4043 setting of purpose and trust fields. New X509_STORE trust and
4044 purpose functions and tidy up setting in other SSL functions.
4047 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
4048 structure. These are inherited by X509_STORE_CTX when it is
4049 initialised. This allows various defaults to be set in the
4050 X509_STORE structure (such as flags for CRL checking and custom
4051 purpose or trust settings) for functions which only use X509_STORE_CTX
4052 internally such as S/MIME.
4054 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
4055 trust settings if they are not set in X509_STORE. This allows X509_STORE
4056 purposes and trust (in S/MIME for example) to override any set by default.
4058 Add command line options for CRL checking to smime, s_client and s_server
4062 *) Initial CRL based revocation checking. If the CRL checking flag(s)
4063 are set then the CRL is looked up in the X509_STORE structure and
4064 its validity and signature checked, then if the certificate is found
4065 in the CRL the verify fails with a revoked error.
4067 Various new CRL related callbacks added to X509_STORE_CTX structure.
4069 Command line options added to 'verify' application to support this.
4071 This needs some additional work, such as being able to handle multiple
4072 CRLs with different times, extension based lookup (rather than just
4073 by subject name) and ultimately more complete V2 CRL extension
4077 *) Add a general user interface API (crypto/ui/). This is designed
4078 to replace things like des_read_password and friends (backward
4079 compatibility functions using this new API are provided).
4080 The purpose is to remove prompting functions from the DES code
4081 section as well as provide for prompting through dialog boxes in
4082 a window system and the like.
4085 *) Add "ex_data" support to ENGINE so implementations can add state at a
4086 per-structure level rather than having to store it globally.
4089 *) Make it possible for ENGINE structures to be copied when retrieved by
4090 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
4091 This causes the "original" ENGINE structure to act like a template,
4092 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
4093 operational state can be localised to each ENGINE structure, despite the
4094 fact they all share the same "methods". New ENGINE structures returned in
4095 this case have no functional references and the return value is the single
4096 structural reference. This matches the single structural reference returned
4097 by ENGINE_by_id() normally, when it is incremented on the pre-existing
4101 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
4102 needs to match any other type at all we need to manually clear the
4106 *) Changes to the "openssl engine" utility to include;
4107 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
4108 about an ENGINE's available control commands.
4109 - executing control commands from command line arguments using the
4110 '-pre' and '-post' switches. '-post' is only used if '-t' is
4111 specified and the ENGINE is successfully initialised. The syntax for
4112 the individual commands are colon-separated, for example;
4113 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
4116 *) New dynamic control command support for ENGINEs. ENGINEs can now
4117 declare their own commands (numbers), names (strings), descriptions,
4118 and input types for run-time discovery by calling applications. A
4119 subset of these commands are implicitly classed as "executable"
4120 depending on their input type, and only these can be invoked through
4121 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
4122 can be based on user input, config files, etc). The distinction is
4123 that "executable" commands cannot return anything other than a boolean
4124 result and can only support numeric or string input, whereas some
4125 discoverable commands may only be for direct use through
4126 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
4127 pointers, or other custom uses. The "executable" commands are to
4128 support parameterisations of ENGINE behaviour that can be
4129 unambiguously defined by ENGINEs and used consistently across any
4130 OpenSSL-based application. Commands have been added to all the
4131 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
4132 control over shared-library paths without source code alterations.
4135 *) Changed all ENGINE implementations to dynamically allocate their
4136 ENGINEs rather than declaring them statically. Apart from this being
4137 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
4138 this also allows the implementations to compile without using the
4139 internal engine_int.h header.
4142 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
4143 'const' value. Any code that should be able to modify a RAND_METHOD
4144 should already have non-const pointers to it (ie. they should only
4145 modify their own ones).
4148 *) Made a variety of little tweaks to the ENGINE code.
4149 - "atalla" and "ubsec" string definitions were moved from header files
4150 to C code. "nuron" string definitions were placed in variables
4151 rather than hard-coded - allowing parameterisation of these values
4152 later on via ctrl() commands.
4153 - Removed unused "#if 0"'d code.
4154 - Fixed engine list iteration code so it uses ENGINE_free() to release
4155 structural references.
4156 - Constified the RAND_METHOD element of ENGINE structures.
4157 - Constified various get/set functions as appropriate and added
4158 missing functions (including a catch-all ENGINE_cpy that duplicates
4159 all ENGINE values onto a new ENGINE except reference counts/state).
4160 - Removed NULL parameter checks in get/set functions. Setting a method
4161 or function to NULL is a way of cancelling out a previously set
4162 value. Passing a NULL ENGINE parameter is just plain stupid anyway
4163 and doesn't justify the extra error symbols and code.
4164 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
4165 flags from engine_int.h to engine.h.
4166 - Changed prototypes for ENGINE handler functions (init(), finish(),
4167 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
4170 *) Implement binary inversion algorithm for BN_mod_inverse in addition
4171 to the algorithm using long division. The binary algorithm can be
4172 used only if the modulus is odd. On 32-bit systems, it is faster
4173 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
4174 roughly 5-15% for 256-bit moduli), so we use it only for moduli
4175 up to 450 bits. In 64-bit environments, the binary algorithm
4176 appears to be advantageous for much longer moduli; here we use it
4177 for moduli up to 2048 bits.
4180 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
4181 could not support the combine flag in choice fields.
4184 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
4185 extensions from a certificate request to the certificate.
4188 *) Allow multiple 'certopt' and 'nameopt' options to be separated
4189 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
4190 file: this allows the display of the certificate about to be
4191 signed to be customised, to allow certain fields to be included
4192 or excluded and extension details. The old system didn't display
4193 multicharacter strings properly, omitted fields not in the policy
4194 and couldn't display additional details such as extensions.
4197 *) Function EC_POINTs_mul for multiple scalar multiplication
4198 of an arbitrary number of elliptic curve points
4199 \sum scalars[i]*points[i],
4200 optionally including the generator defined for the EC_GROUP:
4201 scalar*generator + \sum scalars[i]*points[i].
4203 EC_POINT_mul is a simple wrapper function for the typical case
4204 that the point list has just one item (besides the optional
4208 *) First EC_METHODs for curves over GF(p):
4210 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
4211 operations and provides various method functions that can also
4212 operate with faster implementations of modular arithmetic.
4214 EC_GFp_mont_method() reuses most functions that are part of
4215 EC_GFp_simple_method, but uses Montgomery arithmetic.
4217 [Bodo Moeller; point addition and point doubling
4218 implementation directly derived from source code provided by
4219 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
4221 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
4222 crypto/ec/ec_lib.c):
4224 Curves are EC_GROUP objects (with an optional group generator)
4225 based on EC_METHODs that are built into the library.
4227 Points are EC_POINT objects based on EC_GROUP objects.
4229 Most of the framework would be able to handle curves over arbitrary
4230 finite fields, but as there are no obvious types for fields other
4231 than GF(p), some functions are limited to that for now.
4234 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
4235 that the file contains a complete HTTP response.
4238 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
4239 change the def and num file printf format specifier from "%-40sXXX"
4240 to "%-39s XXX". The latter will always guarantee a space after the
4241 field while the former will cause them to run together if the field
4242 is 40 of more characters long.
4245 *) Constify the cipher and digest 'method' functions and structures
4246 and modify related functions to take constant EVP_MD and EVP_CIPHER
4250 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
4251 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
4254 *) Modify EVP_Digest*() routines so they now return values. Although the
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