5 Changes between 0.9.8j and 0.9.9 [xx XXX xxxx]
7 *) Modify HMAC functions to return a value. Since these can be implemented
8 in an ENGINE errors can occur.
11 *) Type-checked OBJ_bsearch_ex.
14 *) Type-checked OBJ_bsearch. Also some constification necessitated
15 by type-checking. Still to come: TXT_DB, bsearch(?),
16 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
20 *) New function OPENSSL_gmtime_adj() to add a specific number of days and
21 seconds to a tm structure directly, instead of going through OS
22 specific date routines. This avoids any issues with OS routines such
23 as the year 2038 bug. New *_adj() functions for ASN1 time structures
24 and X509_time_adj_ex() to cover the extended range. The existing
25 X509_time_adj() is still usable and will no longer have any date issues.
28 *) Delta CRL support. New use deltas option which will attempt to locate
29 and search any appropriate delta CRLs available.
31 This work was sponsored by Google.
34 *) Support for CRLs partitioned by reason code. Reorganise CRL processing
35 code and add additional score elements. Validate alternate CRL paths
36 as part of the CRL checking and indicate a new error "CRL path validation
37 error" in this case. Applications wanting additional details can use
38 the verify callback and check the new "parent" field. If this is not
39 NULL CRL path validation is taking place. Existing applications wont
40 see this because it requires extended CRL support which is off by
43 This work was sponsored by Google.
46 *) Support for freshest CRL extension.
48 This work was sponsored by Google.
51 *) Initial indirect CRL support. Currently only supported in the CRLs
52 passed directly and not via lookup. Process certificate issuer
53 CRL entry extension and lookup CRL entries by bother issuer name
54 and serial number. Check and process CRL issuer entry in IDP extension.
56 This work was sponsored by Google.
59 *) Add support for distinct certificate and CRL paths. The CRL issuer
60 certificate is validated separately in this case. Only enabled if
61 an extended CRL support flag is set: this flag will enable additional
62 CRL functionality in future.
64 This work was sponsored by Google.
67 *) Add support for policy mappings extension.
69 This work was sponsored by Google.
72 *) Fixes to pathlength constraint, self issued certificate handling,
73 policy processing to align with RFC3280 and PKITS tests.
75 This work was sponsored by Google.
78 *) Support for name constraints certificate extension. DN, email, DNS
79 and URI types are currently supported.
81 This work was sponsored by Google.
84 *) To cater for systems that provide a pointer-based thread ID rather
85 than numeric, deprecate the current numeric thread ID mechanism and
86 replace it with a structure and associated callback type. This
87 mechanism allows a numeric "hash" to be extracted from a thread ID in
88 either case, and on platforms where pointers are larger than 'long',
89 mixing is done to help ensure the numeric 'hash' is usable even if it
90 can't be guaranteed unique. The default mechanism is to use "&errno"
91 as a pointer-based thread ID to distinguish between threads.
93 Applications that want to provide their own thread IDs should now use
94 CRYPTO_THREADID_set_callback() to register a callback that will call
95 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
97 Note that ERR_remove_state() is now deprecated, because it is tied
98 to the assumption that thread IDs are numeric. ERR_remove_state(0)
99 to free the current thread's error state should be replaced by
100 ERR_remove_thread_state(NULL).
102 (This new approach replaces the functions CRYPTO_set_idptr_callback(),
103 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
104 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
105 application was previously providing a numeric thread callback that
106 was inappropriate for distinguishing threads, then uniqueness might
107 have been obtained with &errno that happened immediately in the
108 intermediate development versions of OpenSSL; this is no longer the
109 case, the numeric thread callback will now override the automatic use
111 [Geoff Thorpe, with help from Bodo Moeller]
113 *) Initial support for different CRL issuing certificates. This covers a
114 simple case where the self issued certificates in the chain exist and
115 the real CRL issuer is higher in the existing chain.
117 This work was sponsored by Google.
120 *) Removed effectively defunct crypto/store from the build.
123 *) Revamp of STACK to provide stronger type-checking. Still to come:
124 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
125 ASN1_STRING, CONF_VALUE.
128 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
129 RAM on SSL connections. This option can save about 34k per idle SSL.
132 *) Revamp of LHASH to provide stronger type-checking. Still to come:
133 STACK, TXT_DB, bsearch, qsort.
136 *) Initial support for Cryptographic Message Syntax (aka CMS) based
137 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
138 support for data, signedData, compressedData, digestedData and
139 encryptedData, envelopedData types included. Scripts to check against
140 RFC4134 examples draft and interop and consistency checks of many
141 content types and variants.
144 *) Add options to enc utility to support use of zlib compression BIO.
147 *) Extend mk1mf to support importing of options and assembly language
148 files from Configure script, currently only included in VC-WIN32.
149 The assembly language rules can now optionally generate the source
150 files from the associated perl scripts.
153 *) Implement remaining functionality needed to support GOST ciphersuites.
154 Interop testing has been performed using CryptoPro implementations.
155 [Victor B. Wagner <vitus@cryptocom.ru>]
157 *) s390x assembler pack.
160 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU
164 *) Implement Opaque PRF Input TLS extension as specified in
165 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an
166 official specification yet and no extension type assignment by
167 IANA exists, this extension (for now) will have to be explicitly
168 enabled when building OpenSSL by providing the extension number
169 to use. For example, specify an option
171 -DTLSEXT_TYPE_opaque_prf_input=0x9527
173 to the "config" or "Configure" script to enable the extension,
174 assuming extension number 0x9527 (which is a completely arbitrary
175 and unofficial assignment based on the MD5 hash of the Internet
176 Draft). Note that by doing so, you potentially lose
177 interoperability with other TLS implementations since these might
178 be using the same extension number for other purposes.
180 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the
181 opaque PRF input value to use in the handshake. This will create
182 an interal copy of the length-'len' string at 'src', and will
183 return non-zero for success.
185 To get more control and flexibility, provide a callback function
188 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb)
189 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg)
193 int (*cb)(SSL *, void *peerinput, size_t len, void *arg);
196 Callback function 'cb' will be called in handshakes, and is
197 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate.
198 Argument 'arg' is for application purposes (the value as given to
199 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly
200 be provided to the callback function). The callback function
201 has to return non-zero to report success: usually 1 to use opaque
202 PRF input just if possible, or 2 to enforce use of the opaque PRF
203 input. In the latter case, the library will abort the handshake
204 if opaque PRF input is not successfully negotiated.
206 Arguments 'peerinput' and 'len' given to the callback function
207 will always be NULL and 0 in the case of a client. A server will
208 see the client's opaque PRF input through these variables if
209 available (NULL and 0 otherwise). Note that if the server
210 provides an opaque PRF input, the length must be the same as the
211 length of the client's opaque PRF input.
213 Note that the callback function will only be called when creating
214 a new session (session resumption can resume whatever was
215 previously negotiated), and will not be called in SSL 2.0
216 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or
217 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended
218 for applications that need to enforce opaque PRF input.
222 *) Update ssl code to support digests other than SHA1+MD5 for handshake
225 [Victor B. Wagner <vitus@cryptocom.ru>]
227 *) Add RFC4507 support to OpenSSL. This includes the corrections in
228 RFC4507bis. The encrypted ticket format is an encrypted encoded
229 SSL_SESSION structure, that way new session features are automatically
232 If a client application caches session in an SSL_SESSION structure
233 support is transparent because tickets are now stored in the encoded
236 The SSL_CTX structure automatically generates keys for ticket
237 protection in servers so again support should be possible
238 with no application modification.
240 If a client or server wishes to disable RFC4507 support then the option
241 SSL_OP_NO_TICKET can be set.
243 Add a TLS extension debugging callback to allow the contents of any client
244 or server extensions to be examined.
246 This work was sponsored by Google.
249 *) Final changes to avoid use of pointer pointer casts in OpenSSL.
250 OpenSSL should now compile cleanly on gcc 4.2
251 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson]
253 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC
254 support including streaming MAC support: this is required for GOST
256 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson]
258 *) Add option -stream to use PKCS#7 streaming in smime utility. New
259 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream()
260 to output in BER and PEM format.
263 *) Experimental support for use of HMAC via EVP_PKEY interface. This
264 allows HMAC to be handled via the EVP_DigestSign*() interface. The
265 EVP_PKEY "key" in this case is the HMAC key, potentially allowing
266 ENGINE support for HMAC keys which are unextractable. New -mac and
267 -macopt options to dgst utility.
270 *) New option -sigopt to dgst utility. Update dgst to use
271 EVP_Digest{Sign,Verify}*. These two changes make it possible to use
272 alternative signing paramaters such as X9.31 or PSS in the dgst
276 *) Change ssl_cipher_apply_rule(), the internal function that does
277 the work each time a ciphersuite string requests enabling
278 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or
279 removing ("!foo+bar") a class of ciphersuites: Now it maintains
280 the order of disabled ciphersuites such that those ciphersuites
281 that most recently went from enabled to disabled not only stay
282 in order with respect to each other, but also have higher priority
283 than other disabled ciphersuites the next time ciphersuites are
286 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable
287 the same ciphersuites as with "HIGH" alone, but in a specific
288 order where the PSK ciphersuites come first (since they are the
289 most recently disabled ciphersuites when "HIGH" is parsed).
291 Also, change ssl_create_cipher_list() (using this new
292 funcionality) such that between otherwise identical
293 cihpersuites, ephemeral ECDH is preferred over ephemeral DH in
297 *) Change ssl_create_cipher_list() so that it automatically
298 arranges the ciphersuites in reasonable order before starting
299 to process the rule string. Thus, the definition for "DEFAULT"
300 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but
301 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH".
302 This makes it much easier to arrive at a reasonable default order
303 in applications for which anonymous ciphers are OK (meaning
304 that you can't actually use DEFAULT).
305 [Bodo Moeller; suggested by Victor Duchovni]
307 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string
308 processing) into multiple integers instead of setting
309 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK",
310 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer.
311 (These masks as well as the individual bit definitions are hidden
312 away into the non-exported interface ssl/ssl_locl.h, so this
313 change to the definition of the SSL_CIPHER structure shouldn't
314 affect applications.) This give us more bits for each of these
315 categories, so there is no longer a need to coagulate AES128 and
316 AES256 into a single algorithm bit, and to coagulate Camellia128
317 and Camellia256 into a single algorithm bit, which has led to all
320 Thus, among other things, the kludge introduced in 0.9.7m and
321 0.9.8e for masking out AES256 independently of AES128 or masking
322 out Camellia256 independently of AES256 is not needed here in 0.9.9.
324 With the change, we also introduce new ciphersuite aliases that
325 so far were missing: "AES128", "AES256", "CAMELLIA128", and
329 *) Add support for dsa-with-SHA224 and dsa-with-SHA256.
330 Use the leftmost N bytes of the signature input if the input is
331 larger than the prime q (with N being the size in bytes of q).
334 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses
335 it yet and it is largely untested.
338 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types.
341 *) Initial incomplete changes to avoid need for function casts in OpenSSL
342 some compilers (gcc 4.2 and later) reject their use. Safestack is
343 reimplemented. Update ASN1 to avoid use of legacy functions.
346 *) Win32/64 targets are linked with Winsock2.
349 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected
350 to external functions. This can be used to increase CRL handling
351 efficiency especially when CRLs are very large by (for example) storing
352 the CRL revoked certificates in a database.
355 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so
356 new CRLs added to a directory can be used. New command line option
357 -verify_return_error to s_client and s_server. This causes real errors
358 to be returned by the verify callback instead of carrying on no matter
359 what. This reflects the way a "real world" verify callback would behave.
362 *) GOST engine, supporting several GOST algorithms and public key formats.
363 Kindly donated by Cryptocom.
366 *) Partial support for Issuing Distribution Point CRL extension. CRLs
367 partitioned by DP are handled but no indirect CRL or reason partitioning
368 (yet). Complete overhaul of CRL handling: now the most suitable CRL is
369 selected via a scoring technique which handles IDP and AKID in CRLs.
372 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which
373 will ultimately be used for all verify operations: this will remove the
374 X509_STORE dependency on certificate verification and allow alternative
375 lookup methods. X509_STORE based implementations of these two callbacks.
378 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names.
379 Modify get_crl() to find a valid (unexpired) CRL if possible.
382 *) New function X509_CRL_match() to check if two CRLs are identical. Normally
383 this would be called X509_CRL_cmp() but that name is already used by
384 a function that just compares CRL issuer names. Cache several CRL
385 extensions in X509_CRL structure and cache CRLDP in X509.
388 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name)
389 this maps equivalent X509_NAME structures into a consistent structure.
390 Name comparison can then be performed rapidly using memcmp().
393 *) Non-blocking OCSP request processing. Add -timeout option to ocsp
397 *) Allow digests to supply their own micalg string for S/MIME type using
398 the ctrl EVP_MD_CTRL_MICALG.
401 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the
402 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN
403 ctrl. It can then customise the structure before and/or after signing
407 *) New function OBJ_add_sigid() to allow application defined signature OIDs
408 to be added to OpenSSLs internal tables. New function OBJ_sigid_free()
409 to free up any added signature OIDs.
412 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(),
413 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal
414 digest and cipher tables. New options added to openssl utility:
415 list-message-digest-algorithms and list-cipher-algorithms.
418 *) Change the array representation of binary polynomials: the list
419 of degrees of non-zero coefficients is now terminated with -1.
420 Previously it was terminated with 0, which was also part of the
421 value; thus, the array representation was not applicable to
422 polynomials where t^0 has coefficient zero. This change makes
423 the array representation useful in a more general context.
426 *) Various modifications and fixes to SSL/TLS cipher string
427 handling. For ECC, the code now distinguishes between fixed ECDH
428 with RSA certificates on the one hand and with ECDSA certificates
429 on the other hand, since these are separate ciphersuites. The
430 unused code for Fortezza ciphersuites has been removed.
432 For consistency with EDH, ephemeral ECDH is now called "EECDH"
433 (not "ECDHE"). For consistency with the code for DH
434 certificates, use of ECDH certificates is now considered ECDH
435 authentication, not RSA or ECDSA authentication (the latter is
436 merely the CA's signing algorithm and not actively used in the
439 The temporary ciphersuite alias "ECCdraft" is no longer
440 available, and ECC ciphersuites are no longer excluded from "ALL"
441 and "DEFAULT". The following aliases now exist for RFC 4492
442 ciphersuites, most of these by analogy with the DH case:
444 kECDHr - ECDH cert, signed with RSA
445 kECDHe - ECDH cert, signed with ECDSA
446 kECDH - ECDH cert (signed with either RSA or ECDSA)
447 kEECDH - ephemeral ECDH
448 ECDH - ECDH cert or ephemeral ECDH
454 AECDH - anonymous ECDH
455 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH")
459 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported.
460 Use correct micalg parameters depending on digest(s) in signed message.
463 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process
464 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code.
467 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit
468 an engine to register a method. Add ENGINE lookups for methods and
469 functional reference processing.
472 *) New functions EVP_Digest{Sign,Verify)*. These are enchance versions of
473 EVP_{Sign,Verify}* which allow an application to customise the signature
477 *) New -resign option to smime utility. This adds one or more signers
478 to an existing PKCS#7 signedData structure. Also -md option to use an
479 alternative message digest algorithm for signing.
482 *) Tidy up PKCS#7 routines and add new functions to make it easier to
483 create PKCS7 structures containing multiple signers. Update smime
484 application to support multiple signers.
487 *) New -macalg option to pkcs12 utility to allow setting of an alternative
491 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC.
492 Reorganize PBE internals to lookup from a static table using NIDs,
493 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl:
494 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative
495 PRF which will be automatically used with PBES2.
498 *) Replace the algorithm specific calls to generate keys in "req" with the
502 *) Update PKCS#7 enveloped data routines to use new API. This is now
503 supported by any public key method supporting the encrypt operation. A
504 ctrl is added to allow the public key algorithm to examine or modify
505 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is
509 *) Add a ctrl to asn1 method to allow a public key algorithm to express
510 a default digest type to use. In most cases this will be SHA1 but some
511 algorithms (such as GOST) need to specify an alternative digest. The
512 return value indicates how strong the prefernce is 1 means optional and
513 2 is mandatory (that is it is the only supported type). Modify
514 ASN1_item_sign() to accept a NULL digest argument to indicate it should
515 use the default md. Update openssl utilities to use the default digest
516 type for signing if it is not explicitly indicated.
519 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New
520 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant
521 signing method from the key type. This effectively removes the link
522 between digests and public key types.
525 *) Add an OID cross reference table and utility functions. Its purpose is to
526 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1,
527 rsaEncryption. This will allow some of the algorithm specific hackery
528 needed to use the correct OID to be removed.
531 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO
532 structures for PKCS7_sign(). They are now set up by the relevant public
536 *) Add provisional EC pkey method with support for ECDSA and ECDH.
539 *) Add support for key derivation (agreement) in the API, DH method and
543 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support
544 public and private key formats. As a side effect these add additional
545 command line functionality not previously available: DSA signatures can be
546 generated and verified using pkeyutl and DH key support and generation in
551 [Oliver Tappe <zooey@hirschkaefer.de>]
553 *) New make target "install_html_docs" installs HTML renditions of the
555 [Oliver Tappe <zooey@hirschkaefer.de>]
557 *) New utility "genpkey" this is analagous to "genrsa" etc except it can
558 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to
559 support key and parameter generation and add initial key generation
560 functionality for RSA.
563 *) Add functions for main EVP_PKEY_method operations. The undocumented
564 functions EVP_PKEY_{encrypt,decrypt} have been renamed to
565 EVP_PKEY_{encrypt,decrypt}_old.
568 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public
569 key API, doesn't do much yet.
572 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about
573 public key algorithms. New option to openssl utility:
574 "list-public-key-algorithms" to print out info.
577 *) Implement the Supported Elliptic Curves Extension for
578 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
581 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or
582 EVP_CIPHER structures to avoid later problems in EVP_cleanup().
585 *) New utilities pkey and pkeyparam. These are similar to algorithm specific
586 utilities such as rsa, dsa, dsaparam etc except they process any key
590 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New
591 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(),
592 EVP_PKEY_print_param() to print public key data from an EVP_PKEY
596 *) Initial support for pluggable public key ASN1.
597 De-spaghettify the public key ASN1 handling. Move public and private
598 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate
599 algorithm specific handling to a single module within the relevant
600 algorithm directory. Add functions to allow (near) opaque processing
601 of public and private key structures.
604 *) Implement the Supported Point Formats Extension for
605 ECC ciphersuites from draft-ietf-tls-ecc-12.txt.
608 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members
609 for the psk identity [hint] and the psk callback functions to the
610 SSL_SESSION, SSL and SSL_CTX structure.
613 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA,
617 SSL_CTX_use_psk_identity_hint
618 SSL_get_psk_identity_hint
620 SSL_use_psk_identity_hint
622 [Mika Kousa and Pasi Eronen of Nokia Corporation]
624 *) Add RFC 3161 compliant time stamp request creation, response generation
625 and response verification functionality.
626 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project]
628 *) Add initial support for TLS extensions, specifically for the server_name
629 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
630 have new members for a host name. The SSL data structure has an
631 additional member SSL_CTX *initial_ctx so that new sessions can be
632 stored in that context to allow for session resumption, even after the
633 SSL has been switched to a new SSL_CTX in reaction to a client's
634 server_name extension.
636 New functions (subject to change):
639 SSL_get_servername_type()
642 New CTRL codes and macros (subject to change):
644 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
645 - SSL_CTX_set_tlsext_servername_callback()
646 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
647 - SSL_CTX_set_tlsext_servername_arg()
648 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
650 openssl s_client has a new '-servername ...' option.
652 openssl s_server has new options '-servername_host ...', '-cert2 ...',
653 '-key2 ...', '-servername_fatal' (subject to change). This allows
654 testing the HostName extension for a specific single host name ('-cert'
655 and '-key' remain fallbacks for handshakes without HostName
656 negotiation). If the unrecogninzed_name alert has to be sent, this by
657 default is a warning; it becomes fatal with the '-servername_fatal'
660 [Peter Sylvester, Remy Allais, Christophe Renou]
662 *) Whirlpool hash implementation is added.
665 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to
666 bn(64,32). Because of instruction set limitations it doesn't have
667 any negative impact on performance. This was done mostly in order
668 to make it possible to share assembler modules, such as bn_mul_mont
669 implementations, between 32- and 64-bit builds without hassle.
672 *) Move code previously exiled into file crypto/ec/ec2_smpt.c
673 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP
677 *) New candidate for BIGNUM assembler implementation, bn_mul_mont,
678 dedicated Montgomery multiplication procedure, is introduced.
679 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher
680 "64-bit" performance on certain 32-bit targets.
683 *) New option SSL_OP_NO_COMP to disable use of compression selectively
684 in SSL structures. New SSL ctrl to set maximum send fragment size.
685 Save memory by seeting the I/O buffer sizes dynamically instead of
686 using the maximum available value.
689 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code
690 in addition to the text details.
693 *) Very, very preliminary EXPERIMENTAL support for printing of general
694 ASN1 structures. This currently produces rather ugly output and doesn't
695 handle several customised structures at all.
698 *) Integrated support for PVK file format and some related formats such
699 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support
700 these in the 'rsa' and 'dsa' utilities.
703 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line.
706 *) Remove the ancient ASN1_METHOD code. This was only ever used in one
707 place for the (very old) "NETSCAPE" format certificates which are now
708 handled using new ASN1 code equivalents.
711 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD
712 pointer and make the SSL_METHOD parameter in SSL_CTX_new,
713 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'.
716 *) Modify CRL distribution points extension code to print out previously
717 unsupported fields. Enhance extension setting code to allow setting of
721 *) Add print and set support for Issuing Distribution Point CRL extension.
724 *) Change 'Configure' script to enable Camellia by default.
727 Changes between 0.9.8i and 0.9.8j [xx XXX xxxx]
729 *) Update Configure code and WIN32 build scripts to support experimental
730 code. This is surrounded by OPENSSL_EXPERIMENTAL_FOO and not compiled
731 in by default. Using the configuration option "enable-experimental-foo"
732 enables it. Use this option for JPAKE.
735 *) Add JPAKE support, including demo authentication in s_client and
739 *) Set the comparison function in v3_addr_canonize().
740 [Rob Austein <sra@hactrn.net>]
742 *) Add support for XMPP STARTTLS in s_client.
743 [Philip Paeps <philip@freebsd.org>]
745 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
746 to ensure that even with this option, only ciphersuites in the
747 server's preference list will be accepted. (Note that the option
748 applies only when resuming a session, so the earlier behavior was
749 just about the algorithm choice for symmetric cryptography.)
752 Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
754 *) Fix a state transitition in s3_srvr.c and d1_srvr.c
755 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
758 *) The fix in 0.9.8c that supposedly got rid of unsafe
759 double-checked locking was incomplete for RSA blinding,
760 addressing just one layer of what turns out to have been
761 doubly unsafe triple-checked locking.
763 So now fix this for real by retiring the MONT_HELPER macro
764 in crypto/rsa/rsa_eay.c.
766 [Bodo Moeller; problem pointed out by Marius Schilder]
768 *) Various precautionary measures:
770 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
772 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
773 (NB: This would require knowledge of the secret session ticket key
774 to exploit, in which case you'd be SOL either way.)
776 - Change bn_nist.c so that it will properly handle input BIGNUMs
777 outside the expected range.
779 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
782 [Neel Mehta, Bodo Moeller]
784 *) Allow engines to be "soft loaded" - i.e. optionally don't die if
785 the load fails. Useful for distros.
786 [Ben Laurie and the FreeBSD team]
788 *) Add support for Local Machine Keyset attribute in PKCS#12 files.
791 *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
794 *) Expand ENGINE to support engine supplied SSL client certificate functions.
796 This work was sponsored by Logica.
799 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
800 keystores. Support for SSL/TLS client authentication too.
801 Not compiled unless enable-capieng specified to Configure.
803 This work was sponsored by Logica.
806 *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
807 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
808 attribute creation routines such as certifcate requests and PKCS#12
812 Changes between 0.9.8g and 0.9.8h [28 May 2008]
814 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
815 handshake which could lead to a cilent crash as found using the
816 Codenomicon TLS test suite (CVE-2008-1672)
817 [Steve Henson, Mark Cox]
819 *) Fix double free in TLS server name extensions which could lead to
820 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
823 *) Clear error queue in SSL_CTX_use_certificate_chain_file()
825 Clear the error queue to ensure that error entries left from
826 older function calls do not interfere with the correct operation.
827 [Lutz Jaenicke, Erik de Castro Lopo]
829 *) Remove root CA certificates of commercial CAs:
831 The OpenSSL project does not recommend any specific CA and does not
832 have any policy with respect to including or excluding any CA.
833 Therefore it does not make any sense to ship an arbitrary selection
834 of root CA certificates with the OpenSSL software.
837 *) RSA OAEP patches to fix two separate invalid memory reads.
838 The first one involves inputs when 'lzero' is greater than
839 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes
840 before the beginning of from). The second one involves inputs where
841 the 'db' section contains nothing but zeroes (there is a one-byte
842 invalid read after the end of 'db').
843 [Ivan Nestlerode <inestlerode@us.ibm.com>]
845 *) Partial backport from 0.9.9-dev:
847 Introduce bn_mul_mont (dedicated Montgomery multiplication
848 procedure) as a candidate for BIGNUM assembler implementation.
849 While 0.9.9-dev uses assembler for various architectures, only
850 x86_64 is available by default here in the 0.9.8 branch, and
851 32-bit x86 is available through a compile-time setting.
853 To try the 32-bit x86 assembler implementation, use Configure
854 option "enable-montasm" (which exists only for this backport).
856 As "enable-montasm" for 32-bit x86 disclaims code stability
857 anyway, in this constellation we activate additional code
858 backported from 0.9.9-dev for further performance improvements,
859 namely BN_from_montgomery_word. (To enable this otherwise,
860 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
862 [Andy Polyakov (backport partially by Bodo Moeller)]
864 *) Add TLS session ticket callback. This allows an application to set
865 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
866 values. This is useful for key rollover for example where several key
867 sets may exist with different names.
870 *) Reverse ENGINE-internal logic for caching default ENGINE handles.
871 This was broken until now in 0.9.8 releases, such that the only way
872 a registered ENGINE could be used (assuming it initialises
873 successfully on the host) was to explicitly set it as the default
874 for the relevant algorithms. This is in contradiction with 0.9.7
875 behaviour and the documentation. With this fix, when an ENGINE is
876 registered into a given algorithm's table of implementations, the
877 'uptodate' flag is reset so that auto-discovery will be used next
878 time a new context for that algorithm attempts to select an
880 [Ian Lister (tweaked by Geoff Thorpe)]
882 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
883 implemention in the following ways:
885 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
888 Lack of BER streaming support means one pass streaming processing is
889 only supported if data is detached: setting the streaming flag is
890 ignored for embedded content.
892 CMS support is disabled by default and must be explicitly enabled
893 with the enable-cms configuration option.
896 *) Update the GMP engine glue to do direct copies between BIGNUM and
897 mpz_t when openssl and GMP use the same limb size. Otherwise the
898 existing "conversion via a text string export" trick is still used.
899 [Paul Sheer <paulsheer@gmail.com>]
901 *) Zlib compression BIO. This is a filter BIO which compressed and
902 uncompresses any data passed through it.
905 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement
906 RFC3394 compatible AES key wrapping.
909 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0():
910 sets string data without copying. X509_ALGOR_set0() and
911 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier)
912 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data
913 from an X509_ATTRIBUTE structure optionally checking it occurs only
914 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied
918 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set()
919 to get the expected BN_FLG_CONSTTIME behavior.
920 [Bodo Moeller (Google)]
924 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets
925 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT)
926 - added some more tests to do_tests.pl
927 - fixed RunningProcess usage so that it works with newer LIBC NDKs too
928 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency
929 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc,
930 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc
931 - various changes to netware.pl to enable gcc-cross builds on Win32
933 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD)
934 - various changes to fix missing prototype warnings
935 - fixed x86nasm.pl to create correct asm files for NASM COFF output
936 - added AES, WHIRLPOOL and CPUID assembler code to build files
937 - added missing AES assembler make rules to mk1mf.pl
938 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply
939 [Guenter Knauf <eflash@gmx.net>]
941 *) Implement certificate status request TLS extension defined in RFC3546.
942 A client can set the appropriate parameters and receive the encoded
943 OCSP response via a callback. A server can query the supplied parameters
944 and set the encoded OCSP response in the callback. Add simplified examples
945 to s_client and s_server.
948 Changes between 0.9.8f and 0.9.8g [19 Oct 2007]
951 + Binary incompatibility of ssl_ctx_st structure
952 + DTLS interoperation with non-compliant servers
953 + Don't call get_session_cb() without proposed session
954 + Fix ia64 assembler code
955 [Andy Polyakov, Steve Henson]
957 Changes between 0.9.8e and 0.9.8f [11 Oct 2007]
959 *) DTLS Handshake overhaul. There were longstanding issues with
960 OpenSSL DTLS implementation, which were making it impossible for
961 RFC 4347 compliant client to communicate with OpenSSL server.
962 Unfortunately just fixing these incompatibilities would "cut off"
963 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e
964 server keeps tolerating non RFC compliant syntax. The opposite is
965 not true, 0.9.8f client can not communicate with earlier server.
966 This update even addresses CVE-2007-4995.
969 *) Changes to avoid need for function casts in OpenSSL: some compilers
970 (gcc 4.2 and later) reject their use.
971 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>,
974 *) Add RFC4507 support to OpenSSL. This includes the corrections in
975 RFC4507bis. The encrypted ticket format is an encrypted encoded
976 SSL_SESSION structure, that way new session features are automatically
979 If a client application caches session in an SSL_SESSION structure
980 support is transparent because tickets are now stored in the encoded
983 The SSL_CTX structure automatically generates keys for ticket
984 protection in servers so again support should be possible
985 with no application modification.
987 If a client or server wishes to disable RFC4507 support then the option
988 SSL_OP_NO_TICKET can be set.
990 Add a TLS extension debugging callback to allow the contents of any client
991 or server extensions to be examined.
993 This work was sponsored by Google.
996 *) Add initial support for TLS extensions, specifically for the server_name
997 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now
998 have new members for a host name. The SSL data structure has an
999 additional member SSL_CTX *initial_ctx so that new sessions can be
1000 stored in that context to allow for session resumption, even after the
1001 SSL has been switched to a new SSL_CTX in reaction to a client's
1002 server_name extension.
1004 New functions (subject to change):
1006 SSL_get_servername()
1007 SSL_get_servername_type()
1010 New CTRL codes and macros (subject to change):
1012 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
1013 - SSL_CTX_set_tlsext_servername_callback()
1014 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
1015 - SSL_CTX_set_tlsext_servername_arg()
1016 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
1018 openssl s_client has a new '-servername ...' option.
1020 openssl s_server has new options '-servername_host ...', '-cert2 ...',
1021 '-key2 ...', '-servername_fatal' (subject to change). This allows
1022 testing the HostName extension for a specific single host name ('-cert'
1023 and '-key' remain fallbacks for handshakes without HostName
1024 negotiation). If the unrecogninzed_name alert has to be sent, this by
1025 default is a warning; it becomes fatal with the '-servername_fatal'
1028 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson]
1030 *) Add AES and SSE2 assembly language support to VC++ build.
1033 *) Mitigate attack on final subtraction in Montgomery reduction.
1036 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0
1037 (which previously caused an internal error).
1040 *) Squeeze another 10% out of IGE mode when in != out.
1043 *) AES IGE mode speedup.
1044 [Dean Gaudet (Google)]
1046 *) Add the Korean symmetric 128-bit cipher SEED (see
1047 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and
1048 add SEED ciphersuites from RFC 4162:
1050 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA"
1051 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA"
1052 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA"
1053 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA"
1055 To minimize changes between patchlevels in the OpenSSL 0.9.8
1056 series, SEED remains excluded from compilation unless OpenSSL
1057 is configured with 'enable-seed'.
1058 [KISA, Bodo Moeller]
1060 *) Mitigate branch prediction attacks, which can be practical if a
1061 single processor is shared, allowing a spy process to extract
1062 information. For detailed background information, see
1063 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron,
1064 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL
1065 and Necessary Software Countermeasures"). The core of the change
1066 are new versions BN_div_no_branch() and
1067 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(),
1068 respectively, which are slower, but avoid the security-relevant
1069 conditional branches. These are automatically called by BN_div()
1070 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one
1071 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to
1072 remove a conditional branch.
1074 BN_FLG_CONSTTIME is the new name for the previous
1075 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just
1076 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag
1077 in the exponent causes BN_mod_exp_mont() to use the alternative
1078 implementation in BN_mod_exp_mont_consttime().) The old name
1079 remains as a deprecated alias.
1081 Similary, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general
1082 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses
1083 constant-time implementations for more than just exponentiation.
1084 Here too the old name is kept as a deprecated alias.
1086 BN_BLINDING_new() will now use BN_dup() for the modulus so that
1087 the BN_BLINDING structure gets an independent copy of the
1088 modulus. This means that the previous "BIGNUM *m" argument to
1089 BN_BLINDING_new() and to BN_BLINDING_create_param() now
1090 essentially becomes "const BIGNUM *m", although we can't actually
1091 change this in the header file before 0.9.9. It allows
1092 RSA_setup_blinding() to use BN_with_flags() on the modulus to
1093 enable BN_FLG_CONSTTIME.
1095 [Matthew D Wood (Intel Corp)]
1097 *) In the SSL/TLS server implementation, be strict about session ID
1098 context matching (which matters if an application uses a single
1099 external cache for different purposes). Previously,
1100 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
1101 set. This did ensure strict client verification, but meant that,
1102 with applications using a single external cache for quite
1103 different requirements, clients could circumvent ciphersuite
1104 restrictions for a given session ID context by starting a session
1105 in a different context.
1108 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
1109 a ciphersuite string such as "DEFAULT:RSA" cannot enable
1110 authentication-only ciphersuites.
1113 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
1114 not complete and could lead to a possible single byte overflow
1115 (CVE-2007-5135) [Ben Laurie]
1117 Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
1119 *) Since AES128 and AES256 (and similarly Camellia128 and
1120 Camellia256) share a single mask bit in the logic of
1121 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
1122 kludge to work properly if AES128 is available and AES256 isn't
1123 (or if Camellia128 is available and Camellia256 isn't).
1126 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c
1127 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters):
1128 When a point or a seed is encoded in a BIT STRING, we need to
1129 prevent the removal of trailing zero bits to get the proper DER
1130 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case
1131 of a NamedBitList, for which trailing 0 bits need to be removed.)
1134 *) Have SSL/TLS server implementation tolerate "mismatched" record
1135 protocol version while receiving ClientHello even if the
1136 ClientHello is fragmented. (The server can't insist on the
1137 particular protocol version it has chosen before the ServerHello
1138 message has informed the client about his choice.)
1141 *) Add RFC 3779 support.
1142 [Rob Austein for ARIN, Ben Laurie]
1144 *) Load error codes if they are not already present instead of using a
1145 static variable. This allows them to be cleanly unloaded and reloaded.
1146 Improve header file function name parsing.
1149 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO
1150 or CAPABILITY handshake as required by RFCs.
1153 Changes between 0.9.8c and 0.9.8d [28 Sep 2006]
1155 *) Introduce limits to prevent malicious keys being able to
1156 cause a denial of service. (CVE-2006-2940)
1157 [Steve Henson, Bodo Moeller]
1159 *) Fix ASN.1 parsing of certain invalid structures that can result
1160 in a denial of service. (CVE-2006-2937) [Steve Henson]
1162 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
1163 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
1165 *) Fix SSL client code which could crash if connecting to a
1166 malicious SSLv2 server. (CVE-2006-4343)
1167 [Tavis Ormandy and Will Drewry, Google Security Team]
1169 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites
1170 match only those. Before that, "AES256-SHA" would be interpreted
1171 as a pattern and match "AES128-SHA" too (since AES128-SHA got
1172 the same strength classification in 0.9.7h) as we currently only
1173 have a single AES bit in the ciphersuite description bitmap.
1174 That change, however, also applied to ciphersuite strings such as
1175 "RC4-MD5" that intentionally matched multiple ciphersuites --
1176 namely, SSL 2.0 ciphersuites in addition to the more common ones
1177 from SSL 3.0/TLS 1.0.
1179 So we change the selection algorithm again: Naming an explicit
1180 ciphersuite selects this one ciphersuite, and any other similar
1181 ciphersuite (same bitmap) from *other* protocol versions.
1182 Thus, "RC4-MD5" again will properly select both the SSL 2.0
1183 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite.
1185 Since SSL 2.0 does not have any ciphersuites for which the
1186 128/256 bit distinction would be relevant, this works for now.
1187 The proper fix will be to use different bits for AES128 and
1188 AES256, which would have avoided the problems from the beginning;
1189 however, bits are scarce, so we can only do this in a new release
1190 (not just a patchlevel) when we can change the SSL_CIPHER
1191 definition to split the single 'unsigned long mask' bitmap into
1192 multiple values to extend the available space.
1196 Changes between 0.9.8b and 0.9.8c [05 Sep 2006]
1198 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
1199 (CVE-2006-4339) [Ben Laurie and Google Security Team]
1201 *) Add AES IGE and biIGE modes.
1204 *) Change the Unix randomness entropy gathering to use poll() when
1205 possible instead of select(), since the latter has some
1206 undesirable limitations.
1207 [Darryl Miles via Richard Levitte and Bodo Moeller]
1209 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special
1210 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites
1211 cannot be implicitly activated as part of, e.g., the "AES" alias.
1212 However, please upgrade to OpenSSL 0.9.9[-dev] for
1213 non-experimental use of the ECC ciphersuites to get TLS extension
1214 support, which is required for curve and point format negotiation
1215 to avoid potential handshake problems.
1218 *) Disable rogue ciphersuites:
1220 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
1221 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
1222 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
1224 The latter two were purportedly from
1225 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
1228 Also deactivate the remaining ciphersuites from
1229 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
1230 unofficial, and the ID has long expired.
1233 *) Fix RSA blinding Heisenbug (problems sometimes occured on
1234 dual-core machines) and other potential thread-safety issues.
1237 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key
1238 versions), which is now available for royalty-free use
1239 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html).
1240 Also, add Camellia TLS ciphersuites from RFC 4132.
1242 To minimize changes between patchlevels in the OpenSSL 0.9.8
1243 series, Camellia remains excluded from compilation unless OpenSSL
1244 is configured with 'enable-camellia'.
1247 *) Disable the padding bug check when compression is in use. The padding
1248 bug check assumes the first packet is of even length, this is not
1249 necessarily true if compresssion is enabled and can result in false
1250 positives causing handshake failure. The actual bug test is ancient
1251 code so it is hoped that implementations will either have fixed it by
1252 now or any which still have the bug do not support compression.
1255 Changes between 0.9.8a and 0.9.8b [04 May 2006]
1257 *) When applying a cipher rule check to see if string match is an explicit
1258 cipher suite and only match that one cipher suite if it is.
1261 *) Link in manifests for VC++ if needed.
1262 [Austin Ziegler <halostatue@gmail.com>]
1264 *) Update support for ECC-based TLS ciphersuites according to
1265 draft-ietf-tls-ecc-12.txt with proposed changes (but without
1266 TLS extensions, which are supported starting with the 0.9.9
1267 branch, not in the OpenSSL 0.9.8 branch).
1270 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support
1271 opaque EVP_CIPHER_CTX handling.
1274 *) Fixes and enhancements to zlib compression code. We now only use
1275 "zlib1.dll" and use the default __cdecl calling convention on Win32
1276 to conform with the standards mentioned here:
1277 http://www.zlib.net/DLL_FAQ.txt
1278 Static zlib linking now works on Windows and the new --with-zlib-include
1279 --with-zlib-lib options to Configure can be used to supply the location
1280 of the headers and library. Gracefully handle case where zlib library
1284 *) Several fixes and enhancements to the OID generation code. The old code
1285 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't
1286 handle numbers larger than ULONG_MAX, truncated printing and had a
1287 non standard OBJ_obj2txt() behaviour.
1290 *) Add support for building of engines under engine/ as shared libraries
1291 under VC++ build system.
1294 *) Corrected the numerous bugs in the Win32 path splitter in DSO.
1295 Hopefully, we will not see any false combination of paths any more.
1298 Changes between 0.9.8 and 0.9.8a [11 Oct 2005]
1300 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
1301 (part of SSL_OP_ALL). This option used to disable the
1302 countermeasure against man-in-the-middle protocol-version
1303 rollback in the SSL 2.0 server implementation, which is a bad
1304 idea. (CVE-2005-2969)
1306 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
1307 for Information Security, National Institute of Advanced Industrial
1308 Science and Technology [AIST], Japan)]
1310 *) Add two function to clear and return the verify parameter flags.
1313 *) Keep cipherlists sorted in the source instead of sorting them at
1314 runtime, thus removing the need for a lock.
1317 *) Avoid some small subgroup attacks in Diffie-Hellman.
1318 [Nick Mathewson and Ben Laurie]
1320 *) Add functions for well-known primes.
1323 *) Extended Windows CE support.
1324 [Satoshi Nakamura and Andy Polyakov]
1326 *) Initialize SSL_METHOD structures at compile time instead of during
1327 runtime, thus removing the need for a lock.
1330 *) Make PKCS7_decrypt() work even if no certificate is supplied by
1331 attempting to decrypt each encrypted key in turn. Add support to
1335 Changes between 0.9.7h and 0.9.8 [05 Jul 2005]
1337 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after
1340 *) Add libcrypto.pc and libssl.pc for those who feel they need them.
1343 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private
1344 key into the same file any more.
1347 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors.
1350 *) Add -utf8 command line and config file option to 'ca'.
1351 [Stefan <stf@udoma.org]
1353 *) Removed the macro des_crypt(), as it seems to conflict with some
1354 libraries. Use DES_crypt().
1357 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This
1358 involves renaming the source and generated shared-libs for
1359 both. The engines will accept the corrected or legacy ids
1360 ('ncipher' and '4758_cca' respectively) when binding. NB,
1361 this only applies when building 'shared'.
1362 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe]
1364 *) Add attribute functions to EVP_PKEY structure. Modify
1365 PKCS12_create() to recognize a CSP name attribute and
1366 use it. Make -CSP option work again in pkcs12 utility.
1369 *) Add new functionality to the bn blinding code:
1370 - automatic re-creation of the BN_BLINDING parameters after
1371 a fixed number of uses (currently 32)
1372 - add new function for parameter creation
1373 - introduce flags to control the update behaviour of the
1374 BN_BLINDING parameters
1375 - hide BN_BLINDING structure
1376 Add a second BN_BLINDING slot to the RSA structure to improve
1377 performance when a single RSA object is shared among several
1381 *) Add support for DTLS.
1382 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie]
1384 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1)
1385 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file()
1388 *) Remove buggy and incompletet DH cert support from
1389 ssl/ssl_rsa.c and ssl/s3_both.c
1392 *) Use SHA-1 instead of MD5 as the default digest algorithm for
1393 the apps/openssl applications.
1396 *) Compile clean with "-Wall -Wmissing-prototypes
1397 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently
1398 DEBUG_SAFESTACK must also be set.
1401 *) Change ./Configure so that certain algorithms can be disabled by default.
1402 The new counterpiece to "no-xxx" is "enable-xxx".
1404 The patented RC5 and MDC2 algorithms will now be disabled unless
1405 "enable-rc5" and "enable-mdc2", respectively, are specified.
1407 (IDEA remains enabled despite being patented. This is because IDEA
1408 is frequently required for interoperability, and there is no license
1409 fee for non-commercial use. As before, "no-idea" can be used to
1410 avoid this algorithm.)
1414 *) Add processing of proxy certificates (see RFC 3820). This work was
1415 sponsored by KTH (The Royal Institute of Technology in Stockholm) and
1416 EGEE (Enabling Grids for E-science in Europe).
1419 *) RC4 performance overhaul on modern architectures/implementations, such
1420 as Intel P4, IA-64 and AMD64.
1423 *) New utility extract-section.pl. This can be used specify an alternative
1424 section number in a pod file instead of having to treat each file as
1425 a separate case in Makefile. This can be done by adding two lines to the
1428 =for comment openssl_section:XXX
1430 The blank line is mandatory.
1434 *) New arguments -certform, -keyform and -pass for s_client and s_server
1435 to allow alternative format key and certificate files and passphrase
1439 *) New structure X509_VERIFY_PARAM which combines current verify parameters,
1440 update associated structures and add various utility functions.
1442 Add new policy related verify parameters, include policy checking in
1443 standard verify code. Enhance 'smime' application with extra parameters
1444 to support policy checking and print out.
1447 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3
1448 Nehemiah processors. These extensions support AES encryption in hardware
1449 as well as RNG (though RNG support is currently disabled).
1450 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov]
1452 *) Deprecate BN_[get|set]_params() functions (they were ignored internally).
1455 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented.
1456 [Andy Polyakov and a number of other people]
1458 *) Improved PowerPC platform support. Most notably BIGNUM assembler
1459 implementation contributed by IBM.
1460 [Suresh Chari, Peter Waltenberg, Andy Polyakov]
1462 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public
1463 exponent rather than 'unsigned long'. There is a corresponding change to
1464 the new 'rsa_keygen' element of the RSA_METHOD structure.
1465 [Jelte Jansen, Geoff Thorpe]
1467 *) Functionality for creating the initial serial number file is now
1468 moved from CA.pl to the 'ca' utility with a new option -create_serial.
1470 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial
1471 number file to 1, which is bound to cause problems. To avoid
1472 the problems while respecting compatibility between different 0.9.7
1473 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in
1474 CA.pl for serial number initialization. With the new release 0.9.8,
1475 we can fix the problem directly in the 'ca' utility.)
1478 *) Reduced header interdepencies by declaring more opaque objects in
1479 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will
1480 give fewer recursive includes, which could break lazy source code - so
1481 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always,
1482 developers should define this symbol when building and using openssl to
1483 ensure they track the recommended behaviour, interfaces, [etc], but
1484 backwards-compatible behaviour prevails when this isn't defined.
1487 *) New function X509_POLICY_NODE_print() which prints out policy nodes.
1490 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality.
1491 This will generate a random key of the appropriate length based on the
1492 cipher context. The EVP_CIPHER can provide its own random key generation
1493 routine to support keys of a specific form. This is used in the des and
1494 3des routines to generate a key of the correct parity. Update S/MIME
1495 code to use new functions and hence generate correct parity DES keys.
1496 Add EVP_CHECK_DES_KEY #define to return an error if the key is not
1497 valid (weak or incorrect parity).
1500 *) Add a local set of CRLs that can be used by X509_verify_cert() as well
1501 as looking them up. This is useful when the verified structure may contain
1502 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs
1503 present unless the new PKCS7_NO_CRL flag is asserted.
1506 *) Extend ASN1 oid configuration module. It now additionally accepts the
1509 shortName = some long name, 1.2.3.4
1512 *) Reimplemented the BN_CTX implementation. There is now no more static
1513 limitation on the number of variables it can handle nor the depth of the
1514 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack
1515 information can now expand as required, and rather than having a single
1516 static array of bignums, BN_CTX now uses a linked-list of such arrays
1517 allowing it to expand on demand whilst maintaining the usefulness of
1518 BN_CTX's "bundling".
1521 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD
1522 to allow all RSA operations to function using a single BN_CTX.
1525 *) Preliminary support for certificate policy evaluation and checking. This
1526 is initially intended to pass the tests outlined in "Conformance Testing
1527 of Relying Party Client Certificate Path Processing Logic" v1.07.
1530 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and
1531 remained unused and not that useful. A variety of other little bignum
1532 tweaks and fixes have also been made continuing on from the audit (see
1536 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with
1537 associated ASN1, EVP and SSL functions and old ASN1 macros.
1540 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results,
1541 and this should never fail. So the return value from the use of
1542 BN_set_word() (which can fail due to needless expansion) is now deprecated;
1543 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro.
1546 *) BN_CTX_get() should return zero-valued bignums, providing the same
1547 initialised value as BN_new().
1548 [Geoff Thorpe, suggested by Ulf Möller]
1550 *) Support for inhibitAnyPolicy certificate extension.
1553 *) An audit of the BIGNUM code is underway, for which debugging code is
1554 enabled when BN_DEBUG is defined. This makes stricter enforcements on what
1555 is considered valid when processing BIGNUMs, and causes execution to
1556 assert() when a problem is discovered. If BN_DEBUG_RAND is defined,
1557 further steps are taken to deliberately pollute unused data in BIGNUM
1558 structures to try and expose faulty code further on. For now, openssl will
1559 (in its default mode of operation) continue to tolerate the inconsistent
1560 forms that it has tolerated in the past, but authors and packagers should
1561 consider trying openssl and their own applications when compiled with
1562 these debugging symbols defined. It will help highlight potential bugs in
1563 their own code, and will improve the test coverage for OpenSSL itself. At
1564 some point, these tighter rules will become openssl's default to improve
1565 maintainability, though the assert()s and other overheads will remain only
1566 in debugging configurations. See bn.h for more details.
1567 [Geoff Thorpe, Nils Larsch, Ulf Möller]
1569 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure
1570 that can only be obtained through BN_CTX_new() (which implicitly
1571 initialises it). The presence of this function only made it possible
1572 to overwrite an existing structure (and cause memory leaks).
1575 *) Because of the callback-based approach for implementing LHASH as a
1576 template type, lh_insert() adds opaque objects to hash-tables and
1577 lh_doall() or lh_doall_arg() are typically used with a destructor callback
1578 to clean up those corresponding objects before destroying the hash table
1579 (and losing the object pointers). So some over-zealous constifications in
1580 LHASH have been relaxed so that lh_insert() does not take (nor store) the
1581 objects as "const" and the lh_doall[_arg] callback wrappers are not
1582 prototyped to have "const" restrictions on the object pointers they are
1583 given (and so aren't required to cast them away any more).
1586 *) The tmdiff.h API was so ugly and minimal that our own timing utility
1587 (speed) prefers to use its own implementation. The two implementations
1588 haven't been consolidated as yet (volunteers?) but the tmdiff API has had
1589 its object type properly exposed (MS_TM) instead of casting to/from "char
1590 *". This may still change yet if someone realises MS_TM and "ms_time_***"
1591 aren't necessarily the greatest nomenclatures - but this is what was used
1592 internally to the implementation so I've used that for now.
1595 *) Ensure that deprecated functions do not get compiled when
1596 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of
1597 the self-tests were still using deprecated key-generation functions so
1598 these have been updated also.
1601 *) Reorganise PKCS#7 code to separate the digest location functionality
1602 into PKCS7_find_digest(), digest addtion into PKCS7_bio_add_digest().
1603 New function PKCS7_set_digest() to set the digest type for PKCS#7
1604 digestedData type. Add additional code to correctly generate the
1605 digestedData type and add support for this type in PKCS7 initialization
1609 *) New function PKCS7_set0_type_other() this initializes a PKCS7
1610 structure of type "other".
1613 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making
1614 sure the loop does correctly stop and breaking ("division by zero")
1615 modulus operations are not performed. The (pre-generated) prime
1616 table crypto/bn/bn_prime.h was already correct, but it could not be
1617 re-generated on some platforms because of the "division by zero"
1618 situation in the script.
1619 [Ralf S. Engelschall]
1621 *) Update support for ECC-based TLS ciphersuites according to
1622 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with
1623 SHA-1 now is only used for "small" curves (where the
1624 representation of a field element takes up to 24 bytes); for
1625 larger curves, the field element resulting from ECDH is directly
1626 used as premaster secret.
1627 [Douglas Stebila (Sun Microsystems Laboratories)]
1629 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2
1630 curve secp160r1 to the tests.
1631 [Douglas Stebila (Sun Microsystems Laboratories)]
1633 *) Add the possibility to load symbols globally with DSO.
1634 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte]
1636 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better
1637 control of the error stack.
1640 *) Add support for STORE in ENGINE.
1643 *) Add the STORE type. The intention is to provide a common interface
1644 to certificate and key stores, be they simple file-based stores, or
1645 HSM-type store, or LDAP stores, or...
1646 NOTE: The code is currently UNTESTED and isn't really used anywhere.
1649 *) Add a generic structure called OPENSSL_ITEM. This can be used to
1650 pass a list of arguments to any function as well as provide a way
1651 for a function to pass data back to the caller.
1654 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup()
1655 works like BUF_strdup() but can be used to duplicate a portion of
1656 a string. The copy gets NUL-terminated. BUF_memdup() duplicates
1660 *) Add the function sk_find_ex() which works like sk_find(), but will
1661 return an index to an element even if an exact match couldn't be
1662 found. The index is guaranteed to point at the element where the
1663 searched-for key would be inserted to preserve sorting order.
1666 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but
1667 takes an extra flags argument for optional functionality. Currently,
1668 the following flags are defined:
1670 OBJ_BSEARCH_VALUE_ON_NOMATCH
1671 This one gets OBJ_bsearch_ex() to return a pointer to the first
1672 element where the comparing function returns a negative or zero
1675 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH
1676 This one gets OBJ_bsearch_ex() to return a pointer to the first
1677 element where the comparing function returns zero. This is useful
1678 if there are more than one element where the comparing function
1682 *) Make it possible to create self-signed certificates with 'openssl ca'
1683 in such a way that the self-signed certificate becomes part of the
1684 CA database and uses the same mechanisms for serial number generation
1685 as all other certificate signing. The new flag '-selfsign' enables
1686 this functionality. Adapt CA.sh and CA.pl.in.
1689 *) Add functionality to check the public key of a certificate request
1690 against a given private. This is useful to check that a certificate
1691 request can be signed by that key (self-signing).
1694 *) Make it possible to have multiple active certificates with the same
1695 subject in the CA index file. This is done only if the keyword
1696 'unique_subject' is set to 'no' in the main CA section (default
1697 if 'CA_default') of the configuration file. The value is saved
1698 with the database itself in a separate index attribute file,
1699 named like the index file with '.attr' appended to the name.
1702 *) Generate muti valued AVAs using '+' notation in config files for
1706 *) Support for nameConstraints certificate extension.
1709 *) Support for policyConstraints certificate extension.
1712 *) Support for policyMappings certificate extension.
1715 *) Make sure the default DSA_METHOD implementation only uses its
1716 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL,
1717 and change its own handlers to be NULL so as to remove unnecessary
1718 indirection. This lets alternative implementations fallback to the
1719 default implementation more easily.
1722 *) Support for directoryName in GeneralName related extensions
1726 *) Make it possible to link applications using Makefile.shared.
1727 Make that possible even when linking against static libraries!
1730 *) Support for single pass processing for S/MIME signing. This now
1731 means that S/MIME signing can be done from a pipe, in addition
1732 cleartext signing (multipart/signed type) is effectively streaming
1733 and the signed data does not need to be all held in memory.
1735 This is done with a new flag PKCS7_STREAM. When this flag is set
1736 PKCS7_sign() only initializes the PKCS7 structure and the actual signing
1737 is done after the data is output (and digests calculated) in
1738 SMIME_write_PKCS7().
1741 *) Add full support for -rpath/-R, both in shared libraries and
1742 applications, at least on the platforms where it's known how
1746 *) In crypto/ec/ec_mult.c, implement fast point multiplication with
1747 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult()
1748 will now compute a table of multiples of the generator that
1749 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul()
1750 faster (notably in the case of a single point multiplication,
1751 scalar * generator).
1752 [Nils Larsch, Bodo Moeller]
1754 *) IPv6 support for certificate extensions. The various extensions
1755 which use the IP:a.b.c.d can now take IPv6 addresses using the
1756 formats of RFC1884 2.2 . IPv6 addresses are now also displayed
1760 *) Added an ENGINE that implements RSA by performing private key
1761 exponentiations with the GMP library. The conversions to and from
1762 GMP's mpz_t format aren't optimised nor are any montgomery forms
1763 cached, and on x86 it appears OpenSSL's own performance has caught up.
1764 However there are likely to be other architectures where GMP could
1765 provide a boost. This ENGINE is not built in by default, but it can be
1766 specified at Configure time and should be accompanied by the necessary
1767 linker additions, eg;
1768 ./config -DOPENSSL_USE_GMP -lgmp
1771 *) "openssl engine" will not display ENGINE/DSO load failure errors when
1772 testing availability of engines with "-t" - the old behaviour is
1773 produced by increasing the feature's verbosity with "-tt".
1776 *) ECDSA routines: under certain error conditions uninitialized BN objects
1777 could be freed. Solution: make sure initialization is performed early
1778 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de>
1782 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD
1783 and DH_METHOD (eg. by ENGINE implementations) to override the normal
1784 software implementations. For DSA and DH, parameter generation can
1785 also be overriden by providing the appropriate method callbacks.
1788 *) Change the "progress" mechanism used in key-generation and
1789 primality testing to functions that take a new BN_GENCB pointer in
1790 place of callback/argument pairs. The new API functions have "_ex"
1791 postfixes and the older functions are reimplemented as wrappers for
1792 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide
1793 declarations of the old functions to help (graceful) attempts to
1794 migrate to the new functions. Also, the new key-generation API
1795 functions operate on a caller-supplied key-structure and return
1796 success/failure rather than returning a key or NULL - this is to
1797 help make "keygen" another member function of RSA_METHOD etc.
1799 Example for using the new callback interface:
1801 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...;
1805 BN_GENCB_set(&my_cb, my_callback, my_arg);
1807 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb);
1808 /* For the meaning of a, b in calls to my_callback(), see the
1809 * documentation of the function that calls the callback.
1810 * cb will point to my_cb; my_arg can be retrieved as cb->arg.
1811 * my_callback should return 1 if it wants BN_is_prime_ex()
1812 * to continue, or 0 to stop.
1817 *) Change the ZLIB compression method to be stateful, and make it
1818 available to TLS with the number defined in
1819 draft-ietf-tls-compression-04.txt.
1822 *) Add the ASN.1 structures and functions for CertificatePair, which
1823 is defined as follows (according to X.509_4thEditionDraftV6.pdf):
1825 CertificatePair ::= SEQUENCE {
1826 forward [0] Certificate OPTIONAL,
1827 reverse [1] Certificate OPTIONAL,
1828 -- at least one of the pair shall be present -- }
1830 Also implement the PEM functions to read and write certificate
1831 pairs, and defined the PEM tag as "CERTIFICATE PAIR".
1833 This needed to be defined, mostly for the sake of the LDAP
1834 attribute crossCertificatePair, but may prove useful elsewhere as
1838 *) Make it possible to inhibit symlinking of shared libraries in
1839 Makefile.shared, for Cygwin's sake.
1842 *) Extend the BIGNUM API by creating a function
1843 void BN_set_negative(BIGNUM *a, int neg);
1844 and a macro that behave like
1845 int BN_is_negative(const BIGNUM *a);
1847 to avoid the need to access 'a->neg' directly in applications.
1850 *) Implement fast modular reduction for pseudo-Mersenne primes
1851 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c).
1852 EC_GROUP_new_curve_GFp() will now automatically use this
1854 [Nils Larsch <nla@trustcenter.de>]
1856 *) Add new lock type (CRYPTO_LOCK_BN).
1859 *) Change the ENGINE framework to automatically load engines
1860 dynamically from specific directories unless they could be
1861 found to already be built in or loaded. Move all the
1862 current engines except for the cryptodev one to a new
1864 The engines in engines/ are built as shared libraries if
1865 the "shared" options was given to ./Configure or ./config.
1866 Otherwise, they are inserted in libcrypto.a.
1867 /usr/local/ssl/engines is the default directory for dynamic
1868 engines, but that can be overriden at configure time through
1869 the usual use of --prefix and/or --openssldir, and at run
1870 time with the environment variable OPENSSL_ENGINES.
1871 [Geoff Thorpe and Richard Levitte]
1873 *) Add Makefile.shared, a helper makefile to build shared
1874 libraries. Addapt Makefile.org.
1877 *) Add version info to Win32 DLLs.
1878 [Peter 'Luna' Runestig" <peter@runestig.com>]
1880 *) Add new 'medium level' PKCS#12 API. Certificates and keys
1881 can be added using this API to created arbitrary PKCS#12
1882 files while avoiding the low level API.
1884 New options to PKCS12_create(), key or cert can be NULL and
1885 will then be omitted from the output file. The encryption
1886 algorithm NIDs can be set to -1 for no encryption, the mac
1887 iteration count can be set to 0 to omit the mac.
1889 Enhance pkcs12 utility by making the -nokeys and -nocerts
1890 options work when creating a PKCS#12 file. New option -nomac
1891 to omit the mac, NONE can be set for an encryption algorithm.
1892 New code is modified to use the enhanced PKCS12_create()
1893 instead of the low level API.
1896 *) Extend ASN1 encoder to support indefinite length constructed
1897 encoding. This can output sequences tags and octet strings in
1898 this form. Modify pk7_asn1.c to support indefinite length
1899 encoding. This is experimental and needs additional code to
1900 be useful, such as an ASN1 bio and some enhanced streaming
1903 Extend template encode functionality so that tagging is passed
1904 down to the template encoder.
1907 *) Let 'openssl req' fail if an argument to '-newkey' is not
1908 recognized instead of using RSA as a default.
1911 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt.
1912 As these are not official, they are not included in "ALL";
1913 the "ECCdraft" ciphersuite group alias can be used to select them.
1914 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)]
1916 *) Add ECDH engine support.
1917 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)]
1919 *) Add ECDH in new directory crypto/ecdh/.
1920 [Douglas Stebila (Sun Microsystems Laboratories)]
1922 *) Let BN_rand_range() abort with an error after 100 iterations
1923 without success (which indicates a broken PRNG).
1926 *) Change BN_mod_sqrt() so that it verifies that the input value
1927 is really the square of the return value. (Previously,
1928 BN_mod_sqrt would show GIGO behaviour.)
1931 *) Add named elliptic curves over binary fields from X9.62, SECG,
1932 and WAP/WTLS; add OIDs that were still missing.
1934 [Sheueling Chang Shantz and Douglas Stebila
1935 (Sun Microsystems Laboratories)]
1937 *) Extend the EC library for elliptic curves over binary fields
1938 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/).
1941 EC_GF2m_simple_method
1945 EC_GROUP_new_curve_GF2m
1946 EC_GROUP_set_curve_GF2m
1947 EC_GROUP_get_curve_GF2m
1948 EC_POINT_set_affine_coordinates_GF2m
1949 EC_POINT_get_affine_coordinates_GF2m
1950 EC_POINT_set_compressed_coordinates_GF2m
1952 Point compression for binary fields is disabled by default for
1953 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to
1956 As binary polynomials are represented as BIGNUMs, various members
1957 of the EC_GROUP and EC_POINT data structures can be shared
1958 between the implementations for prime fields and binary fields;
1959 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m)
1960 are essentially identical to their ..._GFp counterparts.
1961 (For simplicity, the '..._GFp' prefix has been dropped from
1962 various internal method names.)
1964 An internal 'field_div' method (similar to 'field_mul' and
1965 'field_sqr') has been added; this is used only for binary fields.
1967 [Sheueling Chang Shantz and Douglas Stebila
1968 (Sun Microsystems Laboratories)]
1970 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult()
1971 through methods ('mul', 'precompute_mult').
1973 The generic implementations (now internally called 'ec_wNAF_mul'
1974 and 'ec_wNAF_precomputed_mult') remain the default if these
1975 methods are undefined.
1977 [Sheueling Chang Shantz and Douglas Stebila
1978 (Sun Microsystems Laboratories)]
1980 *) New function EC_GROUP_get_degree, which is defined through
1981 EC_METHOD. For curves over prime fields, this returns the bit
1982 length of the modulus.
1984 [Sheueling Chang Shantz and Douglas Stebila
1985 (Sun Microsystems Laboratories)]
1987 *) New functions EC_GROUP_dup, EC_POINT_dup.
1988 (These simply call ..._new and ..._copy).
1990 [Sheueling Chang Shantz and Douglas Stebila
1991 (Sun Microsystems Laboratories)]
1993 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c.
1994 Polynomials are represented as BIGNUMs (where the sign bit is not
1995 used) in the following functions [macros]:
1998 BN_GF2m_sub [= BN_GF2m_add]
1999 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr]
2000 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr]
2001 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr]
2003 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr]
2004 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr]
2005 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr]
2006 BN_GF2m_cmp [= BN_ucmp]
2008 (Note that only the 'mod' functions are actually for fields GF(2^m).
2009 BN_GF2m_add() is misnomer, but this is for the sake of consistency.)
2011 For some functions, an the irreducible polynomial defining a
2012 field can be given as an 'unsigned int[]' with strictly
2013 decreasing elements giving the indices of those bits that are set;
2014 i.e., p[] represents the polynomial
2015 f(t) = t^p[0] + t^p[1] + ... + t^p[k]
2017 p[0] > p[1] > ... > p[k] = 0.
2018 This applies to the following functions:
2023 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv]
2024 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div]
2026 BN_GF2m_mod_sqrt_arr
2027 BN_GF2m_mod_solve_quad_arr
2031 Conversion can be performed by the following functions:
2036 bntest.c has additional tests for binary polynomial arithmetic.
2038 Two implementations for BN_GF2m_mod_div() are available.
2039 The default algorithm simply uses BN_GF2m_mod_inv() and
2040 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only
2041 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the
2042 copyright notice in crypto/bn/bn_gf2m.c before enabling it).
2044 [Sheueling Chang Shantz and Douglas Stebila
2045 (Sun Microsystems Laboratories)]
2047 *) Add new error code 'ERR_R_DISABLED' that can be used when some
2048 functionality is disabled at compile-time.
2049 [Douglas Stebila <douglas.stebila@sun.com>]
2051 *) Change default behaviour of 'openssl asn1parse' so that more
2052 information is visible when viewing, e.g., a certificate:
2054 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump'
2055 mode the content of non-printable OCTET STRINGs is output in a
2056 style similar to INTEGERs, but with '[HEX DUMP]' prepended to
2057 avoid the appearance of a printable string.
2058 [Nils Larsch <nla@trustcenter.de>]
2060 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access
2062 EC_GROUP_set_asn1_flag()
2063 EC_GROUP_get_asn1_flag()
2064 EC_GROUP_set_point_conversion_form()
2065 EC_GROUP_get_point_conversion_form()
2066 These control ASN1 encoding details:
2067 - Curves (i.e., groups) are encoded explicitly unless asn1_flag
2068 has been set to OPENSSL_EC_NAMED_CURVE.
2069 - Points are encoded in uncompressed form by default; options for
2070 asn1_for are as for point2oct, namely
2071 POINT_CONVERSION_COMPRESSED
2072 POINT_CONVERSION_UNCOMPRESSED
2073 POINT_CONVERSION_HYBRID
2075 Also add 'seed' and 'seed_len' members to EC_GROUP with access
2078 EC_GROUP_get0_seed()
2079 EC_GROUP_get_seed_len()
2080 This is used only for ASN1 purposes (so far).
2081 [Nils Larsch <nla@trustcenter.de>]
2083 *) Add 'field_type' member to EC_METHOD, which holds the NID
2084 of the appropriate field type OID. The new function
2085 EC_METHOD_get_field_type() returns this value.
2086 [Nils Larsch <nla@trustcenter.de>]
2091 EC_POINT_point2hex()
2092 EC_POINT_hex2point()
2093 providing useful interfaces to EC_POINT_point2oct() and
2094 EC_POINT_oct2point().
2095 [Nils Larsch <nla@trustcenter.de>]
2097 *) Change internals of the EC library so that the functions
2098 EC_GROUP_set_generator()
2099 EC_GROUP_get_generator()
2100 EC_GROUP_get_order()
2101 EC_GROUP_get_cofactor()
2102 are implemented directly in crypto/ec/ec_lib.c and not dispatched
2103 to methods, which would lead to unnecessary code duplication when
2104 adding different types of curves.
2105 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller]
2107 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM
2108 arithmetic, and such that modified wNAFs are generated
2109 (which avoid length expansion in many cases).
2112 *) Add a function EC_GROUP_check_discriminant() (defined via
2113 EC_METHOD) that verifies that the curve discriminant is non-zero.
2115 Add a function EC_GROUP_check() that makes some sanity tests
2116 on a EC_GROUP, its generator and order. This includes
2117 EC_GROUP_check_discriminant().
2118 [Nils Larsch <nla@trustcenter.de>]
2120 *) Add ECDSA in new directory crypto/ecdsa/.
2122 Add applications 'openssl ecparam' and 'openssl ecdsa'
2123 (these are based on 'openssl dsaparam' and 'openssl dsa').
2125 ECDSA support is also included in various other files across the
2126 library. Most notably,
2127 - 'openssl req' now has a '-newkey ecdsa:file' option;
2128 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA;
2129 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and
2130 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make
2131 them suitable for ECDSA where domain parameters must be
2132 extracted before the specific public key;
2133 - ECDSA engine support has been added.
2134 [Nils Larsch <nla@trustcenter.de>]
2136 *) Include some named elliptic curves, and add OIDs from X9.62,
2137 SECG, and WAP/WTLS. Each curve can be obtained from the new
2139 EC_GROUP_new_by_curve_name(),
2140 and the list of available named curves can be obtained with
2141 EC_get_builtin_curves().
2142 Also add a 'curve_name' member to EC_GROUP objects, which can be
2144 EC_GROUP_set_curve_name()
2145 EC_GROUP_get_curve_name()
2146 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller]
2148 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
2149 was actually never needed) and in BN_mul(). The removal in BN_mul()
2150 required a small change in bn_mul_part_recursive() and the addition
2151 of the functions bn_cmp_part_words(), bn_sub_part_words() and
2152 bn_add_part_words(), which do the same thing as bn_cmp_words(),
2153 bn_sub_words() and bn_add_words() except they take arrays with
2157 Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
2159 *) In the SSL/TLS server implementation, be strict about session ID
2160 context matching (which matters if an application uses a single
2161 external cache for different purposes). Previously,
2162 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
2163 set. This did ensure strict client verification, but meant that,
2164 with applications using a single external cache for quite
2165 different requirements, clients could circumvent ciphersuite
2166 restrictions for a given session ID context by starting a session
2167 in a different context.
2170 Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
2172 *) Cleanse PEM buffers before freeing them since they may contain
2174 [Benjamin Bennett <ben@psc.edu>]
2176 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that
2177 a ciphersuite string such as "DEFAULT:RSA" cannot enable
2178 authentication-only ciphersuites.
2181 *) Since AES128 and AES256 share a single mask bit in the logic of
2182 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a
2183 kludge to work properly if AES128 is available and AES256 isn't.
2186 *) Expand security boundary to match 1.1.1 module.
2189 *) Remove redundant features: hash file source, editing of test vectors
2190 modify fipsld to use external fips_premain.c signature.
2193 *) New perl script mkfipsscr.pl to create shell scripts or batch files to
2194 run algorithm test programs.
2197 *) Make algorithm test programs more tolerant of whitespace.
2200 *) Have SSL/TLS server implementation tolerate "mismatched" record
2201 protocol version while receiving ClientHello even if the
2202 ClientHello is fragmented. (The server can't insist on the
2203 particular protocol version it has chosen before the ServerHello
2204 message has informed the client about his choice.)
2207 *) Load error codes if they are not already present instead of using a
2208 static variable. This allows them to be cleanly unloaded and reloaded.
2211 Changes between 0.9.7k and 0.9.7l [28 Sep 2006]
2213 *) Introduce limits to prevent malicious keys being able to
2214 cause a denial of service. (CVE-2006-2940)
2215 [Steve Henson, Bodo Moeller]
2217 *) Fix ASN.1 parsing of certain invalid structures that can result
2218 in a denial of service. (CVE-2006-2937) [Steve Henson]
2220 *) Fix buffer overflow in SSL_get_shared_ciphers() function.
2221 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team]
2223 *) Fix SSL client code which could crash if connecting to a
2224 malicious SSLv2 server. (CVE-2006-4343)
2225 [Tavis Ormandy and Will Drewry, Google Security Team]
2227 *) Change ciphersuite string processing so that an explicit
2228 ciphersuite selects this one ciphersuite (so that "AES256-SHA"
2229 will no longer include "AES128-SHA"), and any other similar
2230 ciphersuite (same bitmap) from *other* protocol versions (so that
2231 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the
2232 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining
2233 changes from 0.9.8b and 0.9.8d.
2236 Changes between 0.9.7j and 0.9.7k [05 Sep 2006]
2238 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher
2239 (CVE-2006-4339) [Ben Laurie and Google Security Team]
2241 *) Change the Unix randomness entropy gathering to use poll() when
2242 possible instead of select(), since the latter has some
2243 undesirable limitations.
2244 [Darryl Miles via Richard Levitte and Bodo Moeller]
2246 *) Disable rogue ciphersuites:
2248 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5")
2249 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5")
2250 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5")
2252 The latter two were purportedly from
2253 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really
2256 Also deactive the remaining ciphersuites from
2257 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as
2258 unofficial, and the ID has long expired.
2261 *) Fix RSA blinding Heisenbug (problems sometimes occured on
2262 dual-core machines) and other potential thread-safety issues.
2265 Changes between 0.9.7i and 0.9.7j [04 May 2006]
2267 *) Adapt fipsld and the build system to link against the validated FIPS
2268 module in FIPS mode.
2271 *) Fixes for VC++ 2005 build under Windows.
2274 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make
2275 from a Windows bash shell such as MSYS. It is autodetected from the
2276 "config" script when run from a VC++ environment. Modify standard VC++
2277 build to use fipscanister.o from the GNU make build.
2280 Changes between 0.9.7h and 0.9.7i [14 Oct 2005]
2282 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS.
2283 The value now differs depending on if you build for FIPS or not.
2284 BEWARE! A program linked with a shared FIPSed libcrypto can't be
2285 safely run with a non-FIPSed libcrypto, as it may crash because of
2286 the difference induced by this change.
2289 Changes between 0.9.7g and 0.9.7h [11 Oct 2005]
2291 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING
2292 (part of SSL_OP_ALL). This option used to disable the
2293 countermeasure against man-in-the-middle protocol-version
2294 rollback in the SSL 2.0 server implementation, which is a bad
2295 idea. (CVE-2005-2969)
2297 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center
2298 for Information Security, National Institute of Advanced Industrial
2299 Science and Technology [AIST], Japan)]
2301 *) Minimal support for X9.31 signatures and PSS padding modes. This is
2302 mainly for FIPS compliance and not fully integrated at this stage.
2305 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform
2306 the exponentiation using a fixed-length exponent. (Otherwise,
2307 the information leaked through timing could expose the secret key
2308 after many signatures; cf. Bleichenbacher's attack on DSA with
2312 *) Make a new fixed-window mod_exp implementation the default for
2313 RSA, DSA, and DH private-key operations so that the sequence of
2314 squares and multiplies and the memory access pattern are
2315 independent of the particular secret key. This will mitigate
2316 cache-timing and potential related attacks.
2318 BN_mod_exp_mont_consttime() is the new exponentiation implementation,
2319 and this is automatically used by BN_mod_exp_mont() if the new flag
2320 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
2321 will use this BN flag for private exponents unless the flag
2322 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
2323 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
2325 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller]
2327 *) Change the client implementation for SSLv23_method() and
2328 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0
2329 Client Hello message format if the SSL_OP_NO_SSLv2 option is set.
2330 (Previously, the SSL 2.0 backwards compatible Client Hello
2331 message format would be used even with SSL_OP_NO_SSLv2.)
2334 *) Add support for smime-type MIME parameter in S/MIME messages which some
2338 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in
2339 a threadsafe manner. Modify rsa code to use new function and add calls
2340 to dsa and dh code (which had race conditions before).
2343 *) Include the fixed error library code in the C error file definitions
2344 instead of fixing them up at runtime. This keeps the error code
2345 structures constant.
2348 Changes between 0.9.7f and 0.9.7g [11 Apr 2005]
2350 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after
2353 *) Fixes for newer kerberos headers. NB: the casts are needed because
2354 the 'length' field is signed on one version and unsigned on another
2355 with no (?) obvious way to tell the difference, without these VC++
2356 complains. Also the "definition" of FAR (blank) is no longer included
2357 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up
2358 some needed definitions.
2361 *) Undo Cygwin change.
2364 *) Added support for proxy certificates according to RFC 3820.
2365 Because they may be a security thread to unaware applications,
2366 they must be explicitely allowed in run-time. See
2367 docs/HOWTO/proxy_certificates.txt for further information.
2370 Changes between 0.9.7e and 0.9.7f [22 Mar 2005]
2372 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating
2373 server and client random values. Previously
2374 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in
2375 less random data when sizeof(time_t) > 4 (some 64 bit platforms).
2377 This change has negligible security impact because:
2379 1. Server and client random values still have 24 bytes of pseudo random
2382 2. Server and client random values are sent in the clear in the initial
2385 3. The master secret is derived using the premaster secret (48 bytes in
2386 size for static RSA ciphersuites) as well as client server and random
2389 The OpenSSL team would like to thank the UK NISCC for bringing this issue
2392 [Stephen Henson, reported by UK NISCC]
2394 *) Use Windows randomness collection on Cygwin.
2397 *) Fix hang in EGD/PRNGD query when communication socket is closed
2398 prematurely by EGD/PRNGD.
2399 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014]
2401 *) Prompt for pass phrases when appropriate for PKCS12 input format.
2404 *) Back-port of selected performance improvements from development
2405 branch, as well as improved support for PowerPC platforms.
2408 *) Add lots of checks for memory allocation failure, error codes to indicate
2409 failure and freeing up memory if a failure occurs.
2410 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson]
2412 *) Add new -passin argument to dgst.
2415 *) Perform some character comparisons of different types in X509_NAME_cmp:
2416 this is needed for some certificates that reencode DNs into UTF8Strings
2417 (in violation of RFC3280) and can't or wont issue name rollover
2421 *) Make an explicit check during certificate validation to see that
2422 the CA setting in each certificate on the chain is correct. As a
2423 side effect always do the following basic checks on extensions,
2424 not just when there's an associated purpose to the check:
2426 - if there is an unhandled critical extension (unless the user
2427 has chosen to ignore this fault)
2428 - if the path length has been exceeded (if one is set at all)
2429 - that certain extensions fit the associated purpose (if one has
2433 Changes between 0.9.7d and 0.9.7e [25 Oct 2004]
2435 *) Avoid a race condition when CRLs are checked in a multi threaded
2436 environment. This would happen due to the reordering of the revoked
2437 entries during signature checking and serial number lookup. Now the
2438 encoding is cached and the serial number sort performed under a lock.
2439 Add new STACK function sk_is_sorted().
2442 *) Add Delta CRL to the extension code.
2445 *) Various fixes to s3_pkt.c so alerts are sent properly.
2446 [David Holmes <d.holmes@f5.com>]
2448 *) Reduce the chances of duplicate issuer name and serial numbers (in
2449 violation of RFC3280) using the OpenSSL certificate creation utilities.
2450 This is done by creating a random 64 bit value for the initial serial
2451 number when a serial number file is created or when a self signed
2452 certificate is created using 'openssl req -x509'. The initial serial
2453 number file is created using 'openssl x509 -next_serial' in CA.pl
2454 rather than being initialized to 1.
2457 Changes between 0.9.7c and 0.9.7d [17 Mar 2004]
2459 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
2460 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
2461 [Joe Orton, Steve Henson]
2463 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites
2465 [Joe Orton, Steve Henson]
2467 *) Make it possible to have multiple active certificates with the same
2468 subject in the CA index file. This is done only if the keyword
2469 'unique_subject' is set to 'no' in the main CA section (default
2470 if 'CA_default') of the configuration file. The value is saved
2471 with the database itself in a separate index attribute file,
2472 named like the index file with '.attr' appended to the name.
2475 *) X509 verify fixes. Disable broken certificate workarounds when
2476 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if
2477 keyUsage extension present. Don't accept CRLs with unhandled critical
2478 extensions: since verify currently doesn't process CRL extensions this
2479 rejects a CRL with *any* critical extensions. Add new verify error codes
2483 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue.
2484 A clarification of RFC2560 will require the use of OCTET STRINGs and
2485 some implementations cannot handle the current raw format. Since OpenSSL
2486 copies and compares OCSP nonces as opaque blobs without any attempt at
2487 parsing them this should not create any compatibility issues.
2490 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when
2491 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without
2492 this HMAC (and other) operations are several times slower than OpenSSL
2496 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex().
2497 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
2499 *) Use the correct content when signing type "other".
2502 Changes between 0.9.7b and 0.9.7c [30 Sep 2003]
2504 *) Fix various bugs revealed by running the NISCC test suite:
2506 Stop out of bounds reads in the ASN1 code when presented with
2507 invalid tags (CVE-2003-0543 and CVE-2003-0544).
2509 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545).
2511 If verify callback ignores invalid public key errors don't try to check
2512 certificate signature with the NULL public key.
2516 *) New -ignore_err option in ocsp application to stop the server
2517 exiting on the first error in a request.
2520 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
2521 if the server requested one: as stated in TLS 1.0 and SSL 3.0
2525 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
2526 extra data after the compression methods not only for TLS 1.0
2527 but also for SSL 3.0 (as required by the specification).
2528 [Bodo Moeller; problem pointed out by Matthias Loepfe]
2530 *) Change X509_certificate_type() to mark the key as exported/exportable
2531 when it's 512 *bits* long, not 512 bytes.
2534 *) Change AES_cbc_encrypt() so it outputs exact multiple of
2535 blocks during encryption.
2538 *) Various fixes to base64 BIO and non blocking I/O. On write
2539 flushes were not handled properly if the BIO retried. On read
2540 data was not being buffered properly and had various logic bugs.
2541 This also affects blocking I/O when the data being decoded is a
2545 *) Various S/MIME bugfixes and compatibility changes:
2546 output correct application/pkcs7 MIME type if
2547 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures.
2548 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening
2549 of files as .eml work). Correctly handle very long lines in MIME
2553 Changes between 0.9.7a and 0.9.7b [10 Apr 2003]
2555 *) Countermeasure against the Klima-Pokorny-Rosa extension of
2556 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
2557 a protocol version number mismatch like a decryption error
2558 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
2561 *) Turn on RSA blinding by default in the default implementation
2562 to avoid a timing attack. Applications that don't want it can call
2563 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
2564 They would be ill-advised to do so in most cases.
2565 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
2567 *) Change RSA blinding code so that it works when the PRNG is not
2568 seeded (in this case, the secret RSA exponent is abused as
2569 an unpredictable seed -- if it is not unpredictable, there
2570 is no point in blinding anyway). Make RSA blinding thread-safe
2571 by remembering the creator's thread ID in rsa->blinding and
2572 having all other threads use local one-time blinding factors
2573 (this requires more computation than sharing rsa->blinding, but
2574 avoids excessive locking; and if an RSA object is not shared
2575 between threads, blinding will still be very fast).
2578 *) Fixed a typo bug that would cause ENGINE_set_default() to set an
2579 ENGINE as defaults for all supported algorithms irrespective of
2580 the 'flags' parameter. 'flags' is now honoured, so applications
2581 should make sure they are passing it correctly.
2584 *) Target "mingw" now allows native Windows code to be generated in
2585 the Cygwin environment as well as with the MinGW compiler.
2588 Changes between 0.9.7 and 0.9.7a [19 Feb 2003]
2590 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
2591 via timing by performing a MAC computation even if incorrrect
2592 block cipher padding has been found. This is a countermeasure
2593 against active attacks where the attacker has to distinguish
2594 between bad padding and a MAC verification error. (CVE-2003-0078)
2596 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
2597 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
2598 Martin Vuagnoux (EPFL, Ilion)]
2600 *) Make the no-err option work as intended. The intention with no-err
2601 is not to have the whole error stack handling routines removed from
2602 libcrypto, it's only intended to remove all the function name and
2603 reason texts, thereby removing some of the footprint that may not
2604 be interesting if those errors aren't displayed anyway.
2606 NOTE: it's still possible for any application or module to have it's
2607 own set of error texts inserted. The routines are there, just not
2608 used by default when no-err is given.
2611 *) Add support for FreeBSD on IA64.
2612 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454]
2614 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT
2615 Kerberos function mit_des_cbc_cksum(). Before this change,
2616 the value returned by DES_cbc_cksum() was like the one from
2617 mit_des_cbc_cksum(), except the bytes were swapped.
2618 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte]
2620 *) Allow an application to disable the automatic SSL chain building.
2621 Before this a rather primitive chain build was always performed in
2622 ssl3_output_cert_chain(): an application had no way to send the
2623 correct chain if the automatic operation produced an incorrect result.
2625 Now the chain builder is disabled if either:
2627 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert().
2629 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set.
2631 The reasoning behind this is that an application would not want the
2632 auto chain building to take place if extra chain certificates are
2633 present and it might also want a means of sending no additional
2634 certificates (for example the chain has two certificates and the
2638 *) Add the possibility to build without the ENGINE framework.
2639 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2641 *) Under Win32 gmtime() can return NULL: check return value in
2642 OPENSSL_gmtime(). Add error code for case where gmtime() fails.
2645 *) DSA routines: under certain error conditions uninitialized BN objects
2646 could be freed. Solution: make sure initialization is performed early
2647 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>,
2648 Nils Larsch <nla@trustcenter.de> via PR#459)
2651 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly
2652 checked on reconnect on the client side, therefore session resumption
2653 could still fail with a "ssl session id is different" error. This
2654 behaviour is masked when SSL_OP_ALL is used due to
2655 SSL_OP_MICROSOFT_SESS_ID_BUG being set.
2656 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2657 followup to PR #377.
2660 *) IA-32 assembler support enhancements: unified ELF targets, support
2661 for SCO/Caldera platforms, fix for Cygwin shared build.
2664 *) Add support for FreeBSD on sparc64. As a consequence, support for
2665 FreeBSD on non-x86 processors is separate from x86 processors on
2666 the config script, much like the NetBSD support.
2667 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>]
2669 Changes between 0.9.6h and 0.9.7 [31 Dec 2002]
2671 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after
2674 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED
2675 code (06) was taken as the first octet of the session ID and the last
2676 octet was ignored consequently. As a result SSLv2 client side session
2677 caching could not have worked due to the session ID mismatch between
2679 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as
2683 *) Change the declaration of needed Kerberos libraries to use EX_LIBS
2684 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is
2688 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it
2689 seems that in spite of existing for more than a year, many application
2690 author have done nothing to provide the necessary callbacks, which
2691 means that this particular engine will not work properly anywhere.
2692 This is a very unfortunate situation which forces us, in the name
2693 of usability, to give the hw_ncipher.c a static lock, which is part
2695 NOTE: This is for the 0.9.7 series ONLY. This hack will never
2696 appear in 0.9.8 or later. We EXPECT application authors to have
2697 dealt properly with this when 0.9.8 is released (unless we actually
2698 make such changes in the libcrypto locking code that changes will
2699 have to be made anyway).
2702 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content
2703 octets have been read, EOF or an error occurs. Without this change
2704 some truncated ASN1 structures will not produce an error.
2707 *) Disable Heimdal support, since it hasn't been fully implemented.
2708 Still give the possibility to force the use of Heimdal, but with
2709 warnings and a request that patches get sent to openssl-dev.
2712 *) Add the VC-CE target, introduce the WINCE sysname, and add
2713 INSTALL.WCE and appropriate conditionals to make it build.
2714 [Steven Reddie <smr@essemer.com.au> via Richard Levitte]
2716 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and
2717 cygssl-x.y.z.dll, where x, y and z are the major, minor and
2718 edit numbers of the version.
2719 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
2721 *) Introduce safe string copy and catenation functions
2722 (BUF_strlcpy() and BUF_strlcat()).
2723 [Ben Laurie (CHATS) and Richard Levitte]
2725 *) Avoid using fixed-size buffers for one-line DNs.
2726 [Ben Laurie (CHATS)]
2728 *) Add BUF_MEM_grow_clean() to avoid information leakage when
2729 resizing buffers containing secrets, and use where appropriate.
2730 [Ben Laurie (CHATS)]
2732 *) Avoid using fixed size buffers for configuration file location.
2733 [Ben Laurie (CHATS)]
2735 *) Avoid filename truncation for various CA files.
2736 [Ben Laurie (CHATS)]
2738 *) Use sizeof in preference to magic numbers.
2739 [Ben Laurie (CHATS)]
2741 *) Avoid filename truncation in cert requests.
2742 [Ben Laurie (CHATS)]
2744 *) Add assertions to check for (supposedly impossible) buffer
2746 [Ben Laurie (CHATS)]
2748 *) Don't cache truncated DNS entries in the local cache (this could
2749 potentially lead to a spoofing attack).
2750 [Ben Laurie (CHATS)]
2752 *) Fix various buffers to be large enough for hex/decimal
2753 representations in a platform independent manner.
2754 [Ben Laurie (CHATS)]
2756 *) Add CRYPTO_realloc_clean() to avoid information leakage when
2757 resizing buffers containing secrets, and use where appropriate.
2758 [Ben Laurie (CHATS)]
2760 *) Add BIO_indent() to avoid much slightly worrying code to do
2762 [Ben Laurie (CHATS)]
2764 *) Convert sprintf()/BIO_puts() to BIO_printf().
2765 [Ben Laurie (CHATS)]
2767 *) buffer_gets() could terminate with the buffer only half
2769 [Ben Laurie (CHATS)]
2771 *) Add assertions to prevent user-supplied crypto functions from
2772 overflowing internal buffers by having large block sizes, etc.
2773 [Ben Laurie (CHATS)]
2775 *) New OPENSSL_assert() macro (similar to assert(), but enabled
2777 [Ben Laurie (CHATS)]
2779 *) Eliminate unused copy of key in RC4.
2780 [Ben Laurie (CHATS)]
2782 *) Eliminate unused and incorrectly sized buffers for IV in pem.h.
2783 [Ben Laurie (CHATS)]
2785 *) Fix off-by-one error in EGD path.
2786 [Ben Laurie (CHATS)]
2788 *) If RANDFILE path is too long, ignore instead of truncating.
2789 [Ben Laurie (CHATS)]
2791 *) Eliminate unused and incorrectly sized X.509 structure
2793 [Ben Laurie (CHATS)]
2795 *) Eliminate unused and dangerous function knumber().
2796 [Ben Laurie (CHATS)]
2798 *) Eliminate unused and dangerous structure, KSSL_ERR.
2799 [Ben Laurie (CHATS)]
2801 *) Protect against overlong session ID context length in an encoded
2802 session object. Since these are local, this does not appear to be
2804 [Ben Laurie (CHATS)]
2806 *) Change from security patch (see 0.9.6e below) that did not affect
2807 the 0.9.6 release series:
2809 Remote buffer overflow in SSL3 protocol - an attacker could
2810 supply an oversized master key in Kerberos-enabled versions.
2812 [Ben Laurie (CHATS)]
2814 *) Change the SSL kerb5 codes to match RFC 2712.
2817 *) Make -nameopt work fully for req and add -reqopt switch.
2818 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson]
2820 *) The "block size" for block ciphers in CFB and OFB mode should be 1.
2821 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>]
2823 *) Make sure tests can be performed even if the corresponding algorithms
2824 have been removed entirely. This was also the last step to make
2825 OpenSSL compilable with DJGPP under all reasonable conditions.
2826 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>]
2828 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT
2829 to allow version independent disabling of normally unselected ciphers,
2830 which may be activated as a side-effect of selecting a single cipher.
2832 (E.g., cipher list string "RSA" enables ciphersuites that are left
2833 out of "ALL" because they do not provide symmetric encryption.
2834 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.)
2835 [Lutz Jaenicke, Bodo Moeller]
2837 *) Add appropriate support for separate platform-dependent build
2838 directories. The recommended way to make a platform-dependent
2839 build directory is the following (tested on Linux), maybe with
2842 # Place yourself outside of the OpenSSL source tree. In
2843 # this example, the environment variable OPENSSL_SOURCE
2844 # is assumed to contain the absolute OpenSSL source directory.
2845 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`"
2846 cd objtree/"`uname -s`-`uname -r`-`uname -m`"
2847 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do
2848 mkdir -p `dirname $F`
2849 ln -s $OPENSSL_SOURCE/$F $F
2852 To be absolutely sure not to disturb the source tree, a "make clean"
2853 is a good thing. If it isn't successfull, don't worry about it,
2854 it probably means the source directory is very clean.
2857 *) Make sure any ENGINE control commands make local copies of string
2858 pointers passed to them whenever necessary. Otherwise it is possible
2859 the caller may have overwritten (or deallocated) the original string
2860 data when a later ENGINE operation tries to use the stored values.
2861 [Götz Babin-Ebell <babinebell@trustcenter.de>]
2863 *) Improve diagnostics in file reading and command-line digests.
2864 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>]
2866 *) Add AES modes CFB and OFB to the object database. Correct an
2867 error in AES-CFB decryption.
2870 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this
2871 allows existing EVP_CIPHER_CTX structures to be reused after
2872 calling EVP_*Final(). This behaviour is used by encryption
2873 BIOs and some applications. This has the side effect that
2874 applications must explicitly clean up cipher contexts with
2875 EVP_CIPHER_CTX_cleanup() or they will leak memory.
2878 *) Check the values of dna and dnb in bn_mul_recursive before calling
2879 bn_mul_comba (a non zero value means the a or b arrays do not contain
2880 n2 elements) and fallback to bn_mul_normal if either is not zero.
2883 *) Fix escaping of non-ASCII characters when using the -subj option
2884 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>)
2887 *) Make object definitions compliant to LDAP (RFC2256): SN is the short
2888 form for "surname", serialNumber has no short form.
2889 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798;
2890 therefore remove "mail" short name for "internet 7".
2891 The OID for unique identifiers in X509 certificates is
2892 x500UniqueIdentifier, not uniqueIdentifier.
2893 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>)
2896 *) Add an "init" command to the ENGINE config module and auto initialize
2897 ENGINEs. Without any "init" command the ENGINE will be initialized
2898 after all ctrl commands have been executed on it. If init=1 the
2899 ENGINE is initailized at that point (ctrls before that point are run
2900 on the uninitialized ENGINE and after on the initialized one). If
2901 init=0 then the ENGINE will not be iniatialized at all.
2904 *) Fix the 'app_verify_callback' interface so that the user-defined
2905 argument is actually passed to the callback: In the
2906 SSL_CTX_set_cert_verify_callback() prototype, the callback
2907 declaration has been changed from
2910 int (*cb)(X509_STORE_CTX *,void *);
2911 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call
2912 i=s->ctx->app_verify_callback(&ctx)
2913 has been changed into
2914 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg).
2916 To update applications using SSL_CTX_set_cert_verify_callback(),
2917 a dummy argument can be added to their callback functions.
2918 [D. K. Smetters <smetters@parc.xerox.com>]
2920 *) Added the '4758cca' ENGINE to support IBM 4758 cards.
2921 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe]
2923 *) Add and OPENSSL_LOAD_CONF define which will cause
2924 OpenSSL_add_all_algorithms() to load the openssl.cnf config file.
2925 This allows older applications to transparently support certain
2926 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading.
2927 Two new functions OPENSSL_add_all_algorithms_noconf() which will never
2928 load the config file and OPENSSL_add_all_algorithms_conf() which will
2929 always load it have also been added.
2932 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES.
2933 Adjust NIDs and EVP layer.
2934 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
2936 *) Config modules support in openssl utility.
2938 Most commands now load modules from the config file,
2939 though in a few (such as version) this isn't done
2940 because it couldn't be used for anything.
2942 In the case of ca and req the config file used is
2943 the same as the utility itself: that is the -config
2944 command line option can be used to specify an
2948 *) Move default behaviour from OPENSSL_config(). If appname is NULL
2949 use "openssl_conf" if filename is NULL use default openssl config file.
2952 *) Add an argument to OPENSSL_config() to allow the use of an alternative
2953 config section name. Add a new flag to tolerate a missing config file
2954 and move code to CONF_modules_load_file().
2957 *) Support for crypto accelerator cards from Accelerated Encryption
2958 Processing, www.aep.ie. (Use engine 'aep')
2959 The support was copied from 0.9.6c [engine] and adapted/corrected
2960 to work with the new engine framework.
2961 [AEP Inc. and Richard Levitte]
2963 *) Support for SureWare crypto accelerator cards from Baltimore
2964 Technologies. (Use engine 'sureware')
2965 The support was copied from 0.9.6c [engine] and adapted
2966 to work with the new engine framework.
2969 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually
2970 make the newer ENGINE framework commands for the CHIL engine work.
2971 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte]
2973 *) Make it possible to produce shared libraries on ReliantUNIX.
2974 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte]
2976 *) Add the configuration target debug-linux-ppro.
2977 Make 'openssl rsa' use the general key loading routines
2978 implemented in apps.c, and make those routines able to
2979 handle the key format FORMAT_NETSCAPE and the variant
2981 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2983 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
2984 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
2986 *) Add -keyform to rsautl, and document -engine.
2987 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>]
2989 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new
2990 BIO_R_NO_SUCH_FILE error code rather than the generic
2991 ERR_R_SYS_LIB error code if fopen() fails with ENOENT.
2994 *) Add new functions
2996 ERR_peek_last_error_line
2997 ERR_peek_last_error_line_data.
2998 These are similar to
3001 ERR_peek_error_line_data,
3002 but report on the latest error recorded rather than the first one
3003 still in the error queue.
3004 [Ben Laurie, Bodo Moeller]
3006 *) default_algorithms option in ENGINE config module. This allows things
3008 default_algorithms = ALL
3009 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS
3012 *) Prelminary ENGINE config module.
3015 *) New experimental application configuration code.
3018 *) Change the AES code to follow the same name structure as all other
3019 symmetric ciphers, and behave the same way. Move everything to
3020 the directory crypto/aes, thereby obsoleting crypto/rijndael.
3021 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte]
3023 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c.
3024 [Ben Laurie and Theo de Raadt]
3026 *) Add option to output public keys in req command.
3027 [Massimiliano Pala madwolf@openca.org]
3029 *) Use wNAFs in EC_POINTs_mul() for improved efficiency
3030 (up to about 10% better than before for P-192 and P-224).
3033 *) New functions/macros
3035 SSL_CTX_set_msg_callback(ctx, cb)
3036 SSL_CTX_set_msg_callback_arg(ctx, arg)
3037 SSL_set_msg_callback(ssl, cb)
3038 SSL_set_msg_callback_arg(ssl, arg)
3040 to request calling a callback function
3042 void cb(int write_p, int version, int content_type,
3043 const void *buf, size_t len, SSL *ssl, void *arg)
3045 whenever a protocol message has been completely received
3046 (write_p == 0) or sent (write_p == 1). Here 'version' is the
3047 protocol version according to which the SSL library interprets
3048 the current protocol message (SSL2_VERSION, SSL3_VERSION, or
3049 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
3050 the content type as defined in the SSL 3.0/TLS 1.0 protocol
3051 specification (change_cipher_spec(20), alert(21), handshake(22)).
3052 'buf' and 'len' point to the actual message, 'ssl' to the
3053 SSL object, and 'arg' is the application-defined value set by
3054 SSL[_CTX]_set_msg_callback_arg().
3056 'openssl s_client' and 'openssl s_server' have new '-msg' options
3057 to enable a callback that displays all protocol messages.
3060 *) Change the shared library support so shared libraries are built as
3061 soon as the corresponding static library is finished, and thereby get
3062 openssl and the test programs linked against the shared library.
3063 This still only happens when the keyword "shard" has been given to
3064 the configuration scripts.
3066 NOTE: shared library support is still an experimental thing, and
3067 backward binary compatibility is still not guaranteed.
3068 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte]
3070 *) Add support for Subject Information Access extension.
3071 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>]
3073 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero
3074 additional bytes when new memory had to be allocated, not just
3075 when reusing an existing buffer.
3078 *) New command line and configuration option 'utf8' for the req command.
3079 This allows field values to be specified as UTF8 strings.
3082 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel
3083 runs for the former and machine-readable output for the latter.
3086 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion
3087 of the e-mail address in the DN (i.e., it will go into a certificate
3088 extension only). The new configuration file option 'email_in_dn = no'
3089 has the same effect.
3090 [Massimiliano Pala madwolf@openca.org]
3092 *) Change all functions with names starting with des_ to be starting
3093 with DES_ instead. Add wrappers that are compatible with libdes,
3094 but are named _ossl_old_des_*. Finally, add macros that map the
3095 des_* symbols to the corresponding _ossl_old_des_* if libdes
3096 compatibility is desired. If OpenSSL 0.9.6c compatibility is
3097 desired, the des_* symbols will be mapped to DES_*, with one
3100 Since we provide two compatibility mappings, the user needs to
3101 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes
3102 compatibility is desired. The default (i.e., when that macro
3103 isn't defined) is OpenSSL 0.9.6c compatibility.
3105 There are also macros that enable and disable the support of old
3106 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT
3107 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those
3108 are defined, the default will apply: to support the old des routines.
3110 In either case, one must include openssl/des.h to get the correct
3111 definitions. Do not try to just include openssl/des_old.h, that
3114 NOTE: This is a major break of an old API into a new one. Software
3115 authors are encouraged to switch to the DES_ style functions. Some
3116 time in the future, des_old.h and the libdes compatibility functions
3117 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the
3118 default), and then completely removed.
3121 *) Test for certificates which contain unsupported critical extensions.
3122 If such a certificate is found during a verify operation it is
3123 rejected by default: this behaviour can be overridden by either
3124 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or
3125 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function
3126 X509_supported_extension() has also been added which returns 1 if a
3127 particular extension is supported.
3130 *) Modify the behaviour of EVP cipher functions in similar way to digests
3131 to retain compatibility with existing code.
3134 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain
3135 compatibility with existing code. In particular the 'ctx' parameter does
3136 not have to be to be initialized before the call to EVP_DigestInit() and
3137 it is tidied up after a call to EVP_DigestFinal(). New function
3138 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function
3139 EVP_MD_CTX_copy() changed to not require the destination to be
3140 initialized valid and new function EVP_MD_CTX_copy_ex() added which
3141 requires the destination to be valid.
3143 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(),
3144 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex().
3147 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it
3148 so that complete 'Handshake' protocol structures are kept in memory
3149 instead of overwriting 'msg_type' and 'length' with 'body' data.
3152 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32.
3153 [Massimo Santin via Richard Levitte]
3155 *) Major restructuring to the underlying ENGINE code. This includes
3156 reduction of linker bloat, separation of pure "ENGINE" manipulation
3157 (initialisation, etc) from functionality dealing with implementations
3158 of specific crypto iterfaces. This change also introduces integrated
3159 support for symmetric ciphers and digest implementations - so ENGINEs
3160 can now accelerate these by providing EVP_CIPHER and EVP_MD
3161 implementations of their own. This is detailed in crypto/engine/README
3162 as it couldn't be adequately described here. However, there are a few
3163 API changes worth noting - some RSA, DSA, DH, and RAND functions that
3164 were changed in the original introduction of ENGINE code have now
3165 reverted back - the hooking from this code to ENGINE is now a good
3166 deal more passive and at run-time, operations deal directly with
3167 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than
3168 dereferencing through an ENGINE pointer any more. Also, the ENGINE
3169 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed -
3170 they were not being used by the framework as there is no concept of a
3171 BIGNUM_METHOD and they could not be generalised to the new
3172 'ENGINE_TABLE' mechanism that underlies the new code. Similarly,
3173 ENGINE_cpy() has been removed as it cannot be consistently defined in
3177 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds.
3180 *) Change mkdef.pl to sort symbols that get the same entry number,
3181 and make sure the automatically generated functions ERR_load_*
3182 become part of libeay.num as well.
3185 *) New function SSL_renegotiate_pending(). This returns true once
3186 renegotiation has been requested (either SSL_renegotiate() call
3187 or HelloRequest/ClientHello receveived from the peer) and becomes
3188 false once a handshake has been completed.
3189 (For servers, SSL_renegotiate() followed by SSL_do_handshake()
3190 sends a HelloRequest, but does not ensure that a handshake takes
3191 place. SSL_renegotiate_pending() is useful for checking if the
3192 client has followed the request.)
3195 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION.
3196 By default, clients may request session resumption even during
3197 renegotiation (if session ID contexts permit); with this option,
3198 session resumption is possible only in the first handshake.
3200 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes
3201 more bits available for options that should not be part of
3202 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION).
3205 *) Add some demos for certificate and certificate request creation.
3208 *) Make maximum certificate chain size accepted from the peer application
3209 settable (SSL*_get/set_max_cert_list()), as proposed by
3210 "Douglas E. Engert" <deengert@anl.gov>.
3213 *) Add support for shared libraries for Unixware-7
3214 (Boyd Lynn Gerber <gerberb@zenez.com>).
3217 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to
3218 be done prior to destruction. Use this to unload error strings from
3219 ENGINEs that load their own error strings. NB: This adds two new API
3220 functions to "get" and "set" this destroy handler in an ENGINE.
3223 *) Alter all existing ENGINE implementations (except "openssl" and
3224 "openbsd") to dynamically instantiate their own error strings. This
3225 makes them more flexible to be built both as statically-linked ENGINEs
3226 and self-contained shared-libraries loadable via the "dynamic" ENGINE.
3227 Also, add stub code to each that makes building them as self-contained
3228 shared-libraries easier (see README.ENGINE).
3231 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE
3232 implementations into applications that are completely implemented in
3233 self-contained shared-libraries. The "dynamic" ENGINE exposes control
3234 commands that can be used to configure what shared-library to load and
3235 to control aspects of the way it is handled. Also, made an update to
3236 the README.ENGINE file that brings its information up-to-date and
3237 provides some information and instructions on the "dynamic" ENGINE
3238 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc).
3241 *) Make it possible to unload ranges of ERR strings with a new
3242 "ERR_unload_strings" function.
3245 *) Add a copy() function to EVP_MD.
3248 *) Make EVP_MD routines take a context pointer instead of just the
3249 md_data void pointer.
3252 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates
3253 that the digest can only process a single chunk of data
3254 (typically because it is provided by a piece of
3255 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application
3256 is only going to provide a single chunk of data, and hence the
3257 framework needn't accumulate the data for oneshot drivers.
3260 *) As with "ERR", make it possible to replace the underlying "ex_data"
3261 functions. This change also alters the storage and management of global
3262 ex_data state - it's now all inside ex_data.c and all "class" code (eg.
3263 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class
3264 index counters. The API functions that use this state have been changed
3265 to take a "class_index" rather than pointers to the class's local STACK
3266 and counter, and there is now an API function to dynamically create new
3267 classes. This centralisation allows us to (a) plug a lot of the
3268 thread-safety problems that existed, and (b) makes it possible to clean
3269 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b)
3270 such data would previously have always leaked in application code and
3271 workarounds were in place to make the memory debugging turn a blind eye
3272 to it. Application code that doesn't use this new function will still
3273 leak as before, but their memory debugging output will announce it now
3274 rather than letting it slide.
3276 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change
3277 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now
3278 has a return value to indicate success or failure.
3281 *) Make it possible to replace the underlying "ERR" functions such that the
3282 global state (2 LHASH tables and 2 locks) is only used by the "default"
3283 implementation. This change also adds two functions to "get" and "set"
3284 the implementation prior to it being automatically set the first time
3285 any other ERR function takes place. Ie. an application can call "get",
3286 pass the return value to a module it has just loaded, and that module
3287 can call its own "set" function using that value. This means the
3288 module's "ERR" operations will use (and modify) the error state in the
3289 application and not in its own statically linked copy of OpenSSL code.
3292 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment
3293 reference counts. This performs normal REF_PRINT/REF_CHECK macros on
3294 the operation, and provides a more encapsulated way for external code
3295 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code
3296 to use these functions rather than manually incrementing the counts.
3298 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()".
3301 *) Add EVP test program.
3304 *) Add symmetric cipher support to ENGINE. Expect the API to change!
3307 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name()
3308 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(),
3309 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate().
3310 These allow a CRL to be built without having to access X509_CRL fields
3311 directly. Modify 'ca' application to use new functions.
3314 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended
3315 bug workarounds. Rollback attack detection is a security feature.
3316 The problem will only arise on OpenSSL servers when TLSv1 is not
3317 available (sslv3_server_method() or SSL_OP_NO_TLSv1).
3318 Software authors not wanting to support TLSv1 will have special reasons
3319 for their choice and can explicitly enable this option.
3320 [Bodo Moeller, Lutz Jaenicke]
3322 *) Rationalise EVP so it can be extended: don't include a union of
3323 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX
3324 (similar to those existing for EVP_CIPHER_CTX).
3329 EVP_MD_CTX_init(&md); /* new function call */
3330 EVP_DigestInit(&md, EVP_sha1());
3331 EVP_DigestUpdate(&md, in, len);
3332 EVP_DigestFinal(&md, out, NULL);
3333 EVP_MD_CTX_cleanup(&md); /* new function call */
3337 *) Make DES key schedule conform to the usual scheme, as well as
3338 correcting its structure. This means that calls to DES functions
3339 now have to pass a pointer to a des_key_schedule instead of a
3340 plain des_key_schedule (which was actually always a pointer
3343 des_key_schedule ks;
3345 des_set_key_checked(..., &ks);
3346 des_ncbc_encrypt(..., &ks, ...);
3348 (Note that a later change renames 'des_...' into 'DES_...'.)
3351 *) Initial reduction of linker bloat: the use of some functions, such as
3352 PEM causes large amounts of unused functions to be linked in due to
3353 poor organisation. For example pem_all.c contains every PEM function
3354 which has a knock on effect of linking in large amounts of (unused)
3355 ASN1 code. Grouping together similar functions and splitting unrelated
3356 functions prevents this.
3359 *) Cleanup of EVP macros.
3362 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the
3363 correct _ecb suffix.
3366 *) Add initial OCSP responder support to ocsp application. The
3367 revocation information is handled using the text based index
3368 use by the ca application. The responder can either handle
3369 requests generated internally, supplied in files (for example
3370 via a CGI script) or using an internal minimal server.
3373 *) Add configuration choices to get zlib compression for TLS.
3376 *) Changes to Kerberos SSL for RFC 2712 compliance:
3377 1. Implemented real KerberosWrapper, instead of just using
3378 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>]
3379 2. Implemented optional authenticator field of KerberosWrapper.
3381 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req,
3382 and authenticator structs; see crypto/krb5/.
3384 Generalized Kerberos calls to support multiple Kerberos libraries.
3385 [Vern Staats <staatsvr@asc.hpc.mil>,
3386 Jeffrey Altman <jaltman@columbia.edu>
3387 via Richard Levitte]
3389 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it
3390 already does with RSA. testdsa.h now has 'priv_key/pub_key'
3391 values for each of the key sizes rather than having just
3392 parameters (and 'speed' generating keys each time).
3395 *) Speed up EVP routines.
3398 type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
3399 des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k
3400 des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k
3401 des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k
3403 des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k
3404 des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k
3405 des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k
3408 des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k
3410 des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k
3413 *) Added the OS2-EMX target.
3414 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte]
3416 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions
3417 to support NCONF routines in extension code. New function CONF_set_nconf()
3418 to allow functions which take an NCONF to also handle the old LHASH
3419 structure: this means that the old CONF compatible routines can be
3420 retained (in particular wrt extensions) without having to duplicate the
3421 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack.
3424 *) Enhance the general user interface with mechanisms for inner control
3425 and with possibilities to have yes/no kind of prompts.
3428 *) Change all calls to low level digest routines in the library and
3429 applications to use EVP. Add missing calls to HMAC_cleanup() and
3430 don't assume HMAC_CTX can be copied using memcpy().
3431 [Verdon Walker <VWalker@novell.com>, Steve Henson]
3433 *) Add the possibility to control engines through control names but with
3434 arbitrary arguments instead of just a string.
3435 Change the key loaders to take a UI_METHOD instead of a callback
3436 function pointer. NOTE: this breaks binary compatibility with earlier
3437 versions of OpenSSL [engine].
3438 Adapt the nCipher code for these new conditions and add a card insertion
3442 *) Enhance the general user interface with mechanisms to better support
3443 dialog box interfaces, application-defined prompts, the possibility
3444 to use defaults (for example default passwords from somewhere else)
3445 and interrupts/cancellations.
3448 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name
3449 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility.
3452 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also
3453 tidy up some unnecessarily weird code in 'sk_new()').
3454 [Geoff, reported by Diego Tartara <dtartara@novamens.com>]
3456 *) Change the key loading routines for ENGINEs to use the same kind
3457 callback (pem_password_cb) as all other routines that need this
3461 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with
3462 256 bit (=32 byte) keys. Of course seeding with more entropy bytes
3463 than this minimum value is recommended.
3466 *) New random seeder for OpenVMS, using the system process statistics
3467 that are easily reachable.
3470 *) Windows apparently can't transparently handle global
3471 variables defined in DLLs. Initialisations such as:
3473 const ASN1_ITEM *it = &ASN1_INTEGER_it;
3475 wont compile. This is used by the any applications that need to
3476 declare their own ASN1 modules. This was fixed by adding the option
3477 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly
3478 needed for static libraries under Win32.
3481 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle
3482 setting of purpose and trust fields. New X509_STORE trust and
3483 purpose functions and tidy up setting in other SSL functions.
3486 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE
3487 structure. These are inherited by X509_STORE_CTX when it is
3488 initialised. This allows various defaults to be set in the
3489 X509_STORE structure (such as flags for CRL checking and custom
3490 purpose or trust settings) for functions which only use X509_STORE_CTX
3491 internally such as S/MIME.
3493 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and
3494 trust settings if they are not set in X509_STORE. This allows X509_STORE
3495 purposes and trust (in S/MIME for example) to override any set by default.
3497 Add command line options for CRL checking to smime, s_client and s_server
3501 *) Initial CRL based revocation checking. If the CRL checking flag(s)
3502 are set then the CRL is looked up in the X509_STORE structure and
3503 its validity and signature checked, then if the certificate is found
3504 in the CRL the verify fails with a revoked error.
3506 Various new CRL related callbacks added to X509_STORE_CTX structure.
3508 Command line options added to 'verify' application to support this.
3510 This needs some additional work, such as being able to handle multiple
3511 CRLs with different times, extension based lookup (rather than just
3512 by subject name) and ultimately more complete V2 CRL extension
3516 *) Add a general user interface API (crypto/ui/). This is designed
3517 to replace things like des_read_password and friends (backward
3518 compatibility functions using this new API are provided).
3519 The purpose is to remove prompting functions from the DES code
3520 section as well as provide for prompting through dialog boxes in
3521 a window system and the like.
3524 *) Add "ex_data" support to ENGINE so implementations can add state at a
3525 per-structure level rather than having to store it globally.
3528 *) Make it possible for ENGINE structures to be copied when retrieved by
3529 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY.
3530 This causes the "original" ENGINE structure to act like a template,
3531 analogous to the RSA vs. RSA_METHOD type of separation. Because of this
3532 operational state can be localised to each ENGINE structure, despite the
3533 fact they all share the same "methods". New ENGINE structures returned in
3534 this case have no functional references and the return value is the single
3535 structural reference. This matches the single structural reference returned
3536 by ENGINE_by_id() normally, when it is incremented on the pre-existing
3540 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this
3541 needs to match any other type at all we need to manually clear the
3545 *) Changes to the "openssl engine" utility to include;
3546 - verbosity levels ('-v', '-vv', and '-vvv') that provide information
3547 about an ENGINE's available control commands.
3548 - executing control commands from command line arguments using the
3549 '-pre' and '-post' switches. '-post' is only used if '-t' is
3550 specified and the ENGINE is successfully initialised. The syntax for
3551 the individual commands are colon-separated, for example;
3552 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so
3555 *) New dynamic control command support for ENGINEs. ENGINEs can now
3556 declare their own commands (numbers), names (strings), descriptions,
3557 and input types for run-time discovery by calling applications. A
3558 subset of these commands are implicitly classed as "executable"
3559 depending on their input type, and only these can be invoked through
3560 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this
3561 can be based on user input, config files, etc). The distinction is
3562 that "executable" commands cannot return anything other than a boolean
3563 result and can only support numeric or string input, whereas some
3564 discoverable commands may only be for direct use through
3565 ENGINE_ctrl(), eg. supporting the exchange of binary data, function
3566 pointers, or other custom uses. The "executable" commands are to
3567 support parameterisations of ENGINE behaviour that can be
3568 unambiguously defined by ENGINEs and used consistently across any
3569 OpenSSL-based application. Commands have been added to all the
3570 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow
3571 control over shared-library paths without source code alterations.
3574 *) Changed all ENGINE implementations to dynamically allocate their
3575 ENGINEs rather than declaring them statically. Apart from this being
3576 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction,
3577 this also allows the implementations to compile without using the
3578 internal engine_int.h header.
3581 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a
3582 'const' value. Any code that should be able to modify a RAND_METHOD
3583 should already have non-const pointers to it (ie. they should only
3584 modify their own ones).
3587 *) Made a variety of little tweaks to the ENGINE code.
3588 - "atalla" and "ubsec" string definitions were moved from header files
3589 to C code. "nuron" string definitions were placed in variables
3590 rather than hard-coded - allowing parameterisation of these values
3591 later on via ctrl() commands.
3592 - Removed unused "#if 0"'d code.
3593 - Fixed engine list iteration code so it uses ENGINE_free() to release
3594 structural references.
3595 - Constified the RAND_METHOD element of ENGINE structures.
3596 - Constified various get/set functions as appropriate and added
3597 missing functions (including a catch-all ENGINE_cpy that duplicates
3598 all ENGINE values onto a new ENGINE except reference counts/state).
3599 - Removed NULL parameter checks in get/set functions. Setting a method
3600 or function to NULL is a way of cancelling out a previously set
3601 value. Passing a NULL ENGINE parameter is just plain stupid anyway
3602 and doesn't justify the extra error symbols and code.
3603 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for
3604 flags from engine_int.h to engine.h.
3605 - Changed prototypes for ENGINE handler functions (init(), finish(),
3606 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter.
3609 *) Implement binary inversion algorithm for BN_mod_inverse in addition
3610 to the algorithm using long division. The binary algorithm can be
3611 used only if the modulus is odd. On 32-bit systems, it is faster
3612 only for relatively small moduli (roughly 20-30% for 128-bit moduli,
3613 roughly 5-15% for 256-bit moduli), so we use it only for moduli
3614 up to 450 bits. In 64-bit environments, the binary algorithm
3615 appears to be advantageous for much longer moduli; here we use it
3616 for moduli up to 2048 bits.
3619 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code
3620 could not support the combine flag in choice fields.
3623 *) Add a 'copy_extensions' option to the 'ca' utility. This copies
3624 extensions from a certificate request to the certificate.
3627 *) Allow multiple 'certopt' and 'nameopt' options to be separated
3628 by commas. Add 'namopt' and 'certopt' options to the 'ca' config
3629 file: this allows the display of the certificate about to be
3630 signed to be customised, to allow certain fields to be included
3631 or excluded and extension details. The old system didn't display
3632 multicharacter strings properly, omitted fields not in the policy
3633 and couldn't display additional details such as extensions.
3636 *) Function EC_POINTs_mul for multiple scalar multiplication
3637 of an arbitrary number of elliptic curve points
3638 \sum scalars[i]*points[i],
3639 optionally including the generator defined for the EC_GROUP:
3640 scalar*generator + \sum scalars[i]*points[i].
3642 EC_POINT_mul is a simple wrapper function for the typical case
3643 that the point list has just one item (besides the optional
3647 *) First EC_METHODs for curves over GF(p):
3649 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr
3650 operations and provides various method functions that can also
3651 operate with faster implementations of modular arithmetic.
3653 EC_GFp_mont_method() reuses most functions that are part of
3654 EC_GFp_simple_method, but uses Montgomery arithmetic.
3656 [Bodo Moeller; point addition and point doubling
3657 implementation directly derived from source code provided by
3658 Lenka Fibikova <fibikova@exp-math.uni-essen.de>]
3660 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h,
3661 crypto/ec/ec_lib.c):
3663 Curves are EC_GROUP objects (with an optional group generator)
3664 based on EC_METHODs that are built into the library.
3666 Points are EC_POINT objects based on EC_GROUP objects.
3668 Most of the framework would be able to handle curves over arbitrary
3669 finite fields, but as there are no obvious types for fields other
3670 than GF(p), some functions are limited to that for now.
3673 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires
3674 that the file contains a complete HTTP response.
3677 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl
3678 change the def and num file printf format specifier from "%-40sXXX"
3679 to "%-39s XXX". The latter will always guarantee a space after the
3680 field while the former will cause them to run together if the field
3681 is 40 of more characters long.
3684 *) Constify the cipher and digest 'method' functions and structures
3685 and modify related functions to take constant EVP_MD and EVP_CIPHER
3689 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them
3690 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32.
3693 *) Modify EVP_Digest*() routines so they now return values. Although the
3694 internal software routines can never fail additional hardware versions
3698 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts:
3700 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7
3701 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32.
3704 ERR_R_NESTED_ASN1_ERROR
3706 ERR_R_MISSING_ASN1_EOS
3707 were 4 .. 9, conflicting with
3708 ERR_LIB_RSA (= ERR_R_RSA_LIB)
3710 ERR_LIB_PEM (= ERR_R_PEM_LIB).
3711 They are now 58 .. 63 (i.e., just below ERR_R_FATAL).
3713 Add new error code 'ERR_R_INTERNAL_ERROR'.
3716 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock
3720 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This
3721 sets the subject name for a new request or supersedes the
3722 subject name in a given request. Formats that can be parsed are
3723 'CN=Some Name, OU=myOU, C=IT'
3725 'CN=Some Name/OU=myOU/C=IT'.
3727 Add options '-batch' and '-verbose' to 'openssl req'.
3728 [Massimiliano Pala <madwolf@hackmasters.net>]
3730 *) Introduce the possibility to access global variables through
3731 functions on platform were that's the best way to handle exporting
3732 global variables in shared libraries. To enable this functionality,
3733 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro
3734 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter
3735 is normally done by Configure or something similar).
3737 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL
3738 in the source file (foo.c) like this:
3740 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1;
3741 OPENSSL_IMPLEMENT_GLOBAL(double,bar);
3743 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL
3744 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this:
3746 OPENSSL_DECLARE_GLOBAL(int,foo);
3747 #define foo OPENSSL_GLOBAL_REF(foo)
3748 OPENSSL_DECLARE_GLOBAL(double,bar);
3749 #define bar OPENSSL_GLOBAL_REF(bar)
3751 The #defines are very important, and therefore so is including the
3752 header file everywhere where the defined globals are used.
3754 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition
3755 of ASN.1 items, but that structure is a bit different.
3757 The largest change is in util/mkdef.pl which has been enhanced with
3758 better and easier to understand logic to choose which symbols should
3759 go into the Windows .def files as well as a number of fixes and code
3760 cleanup (among others, algorithm keywords are now sorted
3761 lexicographically to avoid constant rewrites).
3764 *) In BN_div() keep a copy of the sign of 'num' before writing the
3765 result to 'rm' because if rm==num the value will be overwritten
3766 and produce the wrong result if 'num' is negative: this caused
3767 problems with BN_mod() and BN_nnmod().
3770 *) Function OCSP_request_verify(). This checks the signature on an
3771 OCSP request and verifies the signer certificate. The signer
3772 certificate is just checked for a generic purpose and OCSP request
3776 *) Add OCSP_check_validity() function to check the validity of OCSP
3777 responses. OCSP responses are prepared in real time and may only
3778 be a few seconds old. Simply checking that the current time lies
3779 between thisUpdate and nextUpdate max reject otherwise valid responses
3780 caused by either OCSP responder or client clock inaccuracy. Instead
3781 we allow thisUpdate and nextUpdate to fall within a certain period of
3782 the current time. The age of the response can also optionally be
3783 checked. Two new options -validity_period and -status_age added to
3787 *) If signature or public key algorithm is unrecognized print out its
3788 OID rather that just UNKNOWN.
3791 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and
3792 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate
3793 ID to be generated from the issuer certificate alone which can then be
3794 passed to OCSP_id_issuer_cmp().
3797 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new
3798 ASN1 modules to export functions returning ASN1_ITEM pointers
3799 instead of the ASN1_ITEM structures themselves. This adds several
3800 new macros which allow the underlying ASN1 function/structure to
3801 be accessed transparently. As a result code should not use ASN1_ITEM
3802 references directly (such as &X509_it) but instead use the relevant
3803 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow
3804 use of the new ASN1 code on platforms where exporting structures
3805 is problematical (for example in shared libraries) but exporting
3806 functions returning pointers to structures is not.
3809 *) Add support for overriding the generation of SSL/TLS session IDs.
3810 These callbacks can be registered either in an SSL_CTX or per SSL.
3811 The purpose of this is to allow applications to control, if they wish,
3812 the arbitrary values chosen for use as session IDs, particularly as it
3813 can be useful for session caching in multiple-server environments. A
3814 command-line switch for testing this (and any client code that wishes
3815 to use such a feature) has been added to "s_server".
3816 [Geoff Thorpe, Lutz Jaenicke]
3818 *) Modify mkdef.pl to recognise and parse preprocessor conditionals
3819 of the form '#if defined(...) || defined(...) || ...' and
3820 '#if !defined(...) && !defined(...) && ...'. This also avoids
3821 the growing number of special cases it was previously handling.
3824 *) Make all configuration macros available for application by making
3825 sure they are available in opensslconf.h, by giving them names starting
3826 with "OPENSSL_" to avoid conflicts with other packages and by making
3827 sure e_os2.h will cover all platform-specific cases together with
3829 Additionally, it is now possible to define configuration/platform-
3830 specific names (called "system identities"). In the C code, these
3831 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another
3832 macro with the name beginning with "OPENSSL_SYS_", which is determined
3833 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on
3837 *) New option -set_serial to 'req' and 'x509' this allows the serial
3838 number to use to be specified on the command line. Previously self
3839 signed certificates were hard coded with serial number 0 and the
3840 CA options of 'x509' had to use a serial number in a file which was
3844 *) New options to 'ca' utility to support V2 CRL entry extensions.
3845 Currently CRL reason, invalidity date and hold instruction are
3846 supported. Add new CRL extensions to V3 code and some new objects.
3849 *) New function EVP_CIPHER_CTX_set_padding() this is used to
3850 disable standard block padding (aka PKCS#5 padding) in the EVP
3851 API, which was previously mandatory. This means that the data is
3852 not padded in any way and so the total length much be a multiple
3853 of the block size, otherwise an error occurs.
3856 *) Initial (incomplete) OCSP SSL support.
3859 *) New function OCSP_parse_url(). This splits up a URL into its host,
3860 port and path components: primarily to parse OCSP URLs. New -url
3861 option to ocsp utility.
3864 *) New nonce behavior. The return value of OCSP_check_nonce() now
3865 reflects the various checks performed. Applications can decide
3866 whether to tolerate certain situations such as an absent nonce
3867 in a response when one was present in a request: the ocsp application
3868 just prints out a warning. New function OCSP_add1_basic_nonce()
3869 this is to allow responders to include a nonce in a response even if
3870 the request is nonce-less.
3873 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are
3874 skipped when using openssl x509 multiple times on a single input file,
3875 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs".
3878 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string()
3879 set string type: to handle setting ASN1_TIME structures. Fix ca
3880 utility to correctly initialize revocation date of CRLs.
3883 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override
3884 the clients preferred ciphersuites and rather use its own preferences.
3885 Should help to work around M$ SGC (Server Gated Cryptography) bug in
3886 Internet Explorer by ensuring unchanged hash method during stepup.
3887 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.)
3890 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael
3891 to aes and add a new 'exist' option to print out symbols that don't
3895 *) Additional options to ocsp utility to allow flags to be set and
3896 additional certificates supplied.
3899 *) Add the option -VAfile to 'openssl ocsp', so the user can give the
3900 OCSP client a number of certificate to only verify the response
3904 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to
3905 handle the new API. Currently only ECB, CBC modes supported. Add new
3908 Add TLS AES ciphersuites as described in RFC3268, "Advanced
3909 Encryption Standard (AES) Ciphersuites for Transport Layer
3910 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were
3911 not enabled by default and were not part of the "ALL" ciphersuite
3912 alias because they were not yet official; they could be
3913 explicitly requested by specifying the "AESdraft" ciphersuite
3914 group alias. In the final release of OpenSSL 0.9.7, the group
3915 alias is called "AES" and is part of "ALL".)
3916 [Ben Laurie, Steve Henson, Bodo Moeller]
3918 *) New function OCSP_copy_nonce() to copy nonce value (if present) from
3919 request to response.
3922 *) Functions for OCSP responders. OCSP_request_onereq_count(),
3923 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info()
3924 extract information from a certificate request. OCSP_response_create()
3925 creates a response and optionally adds a basic response structure.
3926 OCSP_basic_add1_status() adds a complete single response to a basic
3927 response and returns the OCSP_SINGLERESP structure just added (to allow
3928 extensions to be included for example). OCSP_basic_add1_cert() adds a
3929 certificate to a basic response and OCSP_basic_sign() signs a basic
3930 response with various flags. New helper functions ASN1_TIME_check()
3931 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime()
3932 (converts ASN1_TIME to GeneralizedTime).
3935 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}()
3936 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key
3937 structure from a certificate. X509_pubkey_digest() digests the public_key
3938 contents: this is used in various key identifiers.
3941 *) Make sk_sort() tolerate a NULL argument.
3942 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>]
3944 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates
3945 passed by the function are trusted implicitly. If any of them signed the
3946 response then it is assumed to be valid and is not verified.
3949 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT
3950 to data. This was previously part of the PKCS7 ASN1 code. This
3951 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures.
3952 [Steve Henson, reported by Kenneth R. Robinette
3953 <support@securenetterm.com>]
3955 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1
3956 routines: without these tracing memory leaks is very painful.
3957 Fix leaks in PKCS12 and PKCS7 routines.
3960 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new().
3961 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which
3962 effectively meant GeneralizedTime would never be used. Now it
3963 is initialised to -1 but X509_time_adj() now has to check the value
3964 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or
3965 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime.
3966 [Steve Henson, reported by Kenneth R. Robinette
3967 <support@securenetterm.com>]
3969 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously
3970 result in a zero length in the ASN1_INTEGER structure which was
3971 not consistent with the structure when d2i_ASN1_INTEGER() was used
3972 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER()
3973 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER()
3974 where it did not print out a minus for negative ASN1_INTEGER.
3977 *) Add summary printout to ocsp utility. The various functions which
3978 convert status values to strings have been renamed to:
3979 OCSP_response_status_str(), OCSP_cert_status_str() and
3980 OCSP_crl_reason_str() and are no longer static. New options
3981 to verify nonce values and to disable verification. OCSP response
3982 printout format cleaned up.
3985 *) Add additional OCSP certificate checks. These are those specified
3986 in RFC2560. This consists of two separate checks: the CA of the
3987 certificate being checked must either be the OCSP signer certificate
3988 or the issuer of the OCSP signer certificate. In the latter case the
3989 OCSP signer certificate must contain the OCSP signing extended key
3990 usage. This check is performed by attempting to match the OCSP
3991 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
3992 in the OCSP_CERTID structures of the response.
3995 *) Initial OCSP certificate verification added to OCSP_basic_verify()
3996 and related routines. This uses the standard OpenSSL certificate
3997 verify routines to perform initial checks (just CA validity) and
3998 to obtain the certificate chain. Then additional checks will be
3999 performed on the chain. Currently the root CA is checked to see
4000 if it is explicitly trusted for OCSP signing. This is used to set
4001 a root CA as a global signing root: that is any certificate that
4002 chains to that CA is an acceptable OCSP signing certificate.
4005 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3
4006 extensions from a separate configuration file.
4007 As when reading extensions from the main configuration file,
4008 the '-extensions ...' option may be used for specifying the
4010 [Massimiliano Pala <madwolf@comune.modena.it>]
4012 *) New OCSP utility. Allows OCSP requests to be generated or
4013 read. The request can be sent to a responder and the output
4014 parsed, outputed or printed in text form. Not complete yet:
4015 still needs to check the OCSP response validity.
4018 *) New subcommands for 'openssl ca':
4019 'openssl ca -status <serial>' prints the status of the cert with
4020 the given serial number (according to the index file).
4021 'openssl ca -updatedb' updates the expiry status of certificates
4023 [Massimiliano Pala <madwolf@comune.modena.it>]
4025 *) New '-newreq-nodes' command option to CA.pl. This is like
4026 '-newreq', but calls 'openssl req' with the '-nodes' option
4027 so that the resulting key is not encrypted.
4028 [Damien Miller <djm@mindrot.org>]
4030 *) New configuration for the GNU Hurd.
4031 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte]
4033 *) Initial code to implement OCSP basic response verify. This
4034 is currently incomplete. Currently just finds the signer's
4035 certificate and verifies the signature on the response.
4038 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in
4039 value of OPENSSLDIR. This is available via the new '-d' option
4040 to 'openssl version', and is also included in 'openssl version -a'.
4043 *) Allowing defining memory allocation callbacks that will be given
4044 file name and line number information in additional arguments
4045 (a const char* and an int). The basic functionality remains, as
4046 well as the original possibility to just replace malloc(),
4047 realloc() and free() by functions that do not know about these
4048 additional arguments. To register and find out the current
4049 settings for extended allocation functions, the following
4050 functions are provided:
4052 CRYPTO_set_mem_ex_functions
4053 CRYPTO_set_locked_mem_ex_functions
4054 CRYPTO_get_mem_ex_functions
4055 CRYPTO_get_locked_mem_ex_functions
4057 These work the same way as CRYPTO_set_mem_functions and friends.
4058 CRYPTO_get_[locked_]mem_functions now writes 0 where such an
4059 extended allocation function is enabled.
4060 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where
4061 a conventional allocation function is enabled.
4062 [Richard Levitte, Bodo Moeller]
4064 *) Finish off removing the remaining LHASH function pointer casts.
4065 There should no longer be any prototype-casting required when using
4066 the LHASH abstraction, and any casts that remain are "bugs". See
4067 the callback types and macros at the head of lhash.h for details
4068 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example).
4071 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant.
4072 If /dev/[u]random devices are not available or do not return enough
4073 entropy, EGD style sockets (served by EGD or PRNGD) will automatically
4075 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and
4076 /etc/entropy will be queried once each in this sequence, quering stops
4077 when enough entropy was collected without querying more sockets.
4080 *) Change the Unix RAND_poll() variant to be able to poll several
4081 random devices, as specified by DEVRANDOM, until a sufficient amount
4082 of data has been collected. We spend at most 10 ms on each file
4083 (select timeout) and read in non-blocking mode. DEVRANDOM now
4084 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom"
4085 (previously it was just the string "/dev/urandom"), so on typical
4086 platforms the 10 ms delay will never occur.
4087 Also separate out the Unix variant to its own file, rand_unix.c.
4088 For VMS, there's a currently-empty rand_vms.c.
4091 *) Move OCSP client related routines to ocsp_cl.c. These
4092 provide utility functions which an application needing
4093 to issue a request to an OCSP responder and analyse the
4094 response will typically need: as opposed to those which an
4095 OCSP responder itself would need which will be added later.
4097 OCSP_request_sign() signs an OCSP request with an API similar
4098 to PKCS7_sign(). OCSP_response_status() returns status of OCSP
4099 response. OCSP_response_get1_basic() extracts basic response
4100 from response. OCSP_resp_find_status(): finds and extracts status
4101 information from an OCSP_CERTID structure (which will be created
4102 when the request structure is built). These are built from lower
4103 level functions which work on OCSP_SINGLERESP structures but
4104 wont normally be used unless the application wishes to examine
4105 extensions in the OCSP response for example.
4107 Replace nonce routines with a pair of functions.
4108 OCSP_request_add1_nonce() adds a nonce value and optionally
4109 generates a random value. OCSP_check_nonce() checks the
4110 validity of the nonce in an OCSP response.
4113 *) Change function OCSP_request_add() to OCSP_request_add0_id().
4114 This doesn't copy the supplied OCSP_CERTID and avoids the
4115 need to free up the newly created id. Change return type
4116 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure.
4117 This can then be used to add extensions to the request.
4118 Deleted OCSP_request_new(), since most of its functionality
4119 is now in OCSP_REQUEST_new() (and the case insensitive name
4120 clash) apart from the ability to set the request name which
4121 will be added elsewhere.
4124 *) Update OCSP API. Remove obsolete extensions argument from
4125 various functions. Extensions are now handled using the new
4126 OCSP extension code. New simple OCSP HTTP function which
4127 can be used to send requests and parse the response.
4130 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new
4131 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN
4132 uses the special reorder version of SET OF to sort the attributes
4133 and reorder them to match the encoded order. This resolves a long
4134 standing problem: a verify on a PKCS7 structure just after signing
4135 it used to fail because the attribute order did not match the
4136 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes:
4137 it uses the received order. This is necessary to tolerate some broken
4138 software that does not order SET OF. This is handled by encoding
4139 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class)
4140 to produce the required SET OF.
4143 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and
4144 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header
4145 files to get correct declarations of the ASN.1 item variables.
4148 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many
4149 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs:
4150 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was
4151 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i().
4152 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant
4153 ASN1_ITEM and no wrapper functions.
4156 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These
4157 replace the old function pointer based I/O routines. Change most of
4158 the *_d2i_bio() and *_d2i_fp() functions to use these.
4161 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor
4162 lines, recognice more "algorithms" that can be deselected, and make
4163 it complain about algorithm deselection that isn't recognised.
4166 *) New ASN1 functions to handle dup, sign, verify, digest, pack and
4167 unpack operations in terms of ASN1_ITEM. Modify existing wrappers
4168 to use new functions. Add NO_ASN1_OLD which can be set to remove
4169 some old style ASN1 functions: this can be used to determine if old
4170 code will still work when these eventually go away.
4173 *) New extension functions for OCSP structures, these follow the
4174 same conventions as certificates and CRLs.
4177 *) New function X509V3_add1_i2d(). This automatically encodes and
4178 adds an extension. Its behaviour can be customised with various
4179 flags to append, replace or delete. Various wrappers added for
4180 certifcates and CRLs.
4183 *) Fix to avoid calling the underlying ASN1 print routine when
4184 an extension cannot be parsed. Correct a typo in the
4185 OCSP_SERVICELOC extension. Tidy up print OCSP format.
4188 *) Make mkdef.pl parse some of the ASN1 macros and add apropriate
4189 entries for variables.
4192 *) Add functionality to apps/openssl.c for detecting locking
4193 problems: As the program is single-threaded, all we have
4194 to do is register a locking callback using an array for
4195 storing which locks are currently held by the program.
4198 *) Use a lock around the call to CRYPTO_get_ex_new_index() in
4199 SSL_get_ex_data_X509_STORE_idx(), which is used in
4200 ssl_verify_cert_chain() and thus can be called at any time
4201 during TLS/SSL handshakes so that thread-safety is essential.
4202 Unfortunately, the ex_data design is not at all suited
4203 for multi-threaded use, so it probably should be abolished.
4206 *) Added Broadcom "ubsec" ENGINE to OpenSSL.
4207 [Broadcom, tweaked and integrated by Geoff Thorpe]
4209 *) Move common extension printing code to new function
4210 X509V3_print_extensions(). Reorganise OCSP print routines and
4211 implement some needed OCSP ASN1 functions. Add OCSP extensions.
4214 *) New function X509_signature_print() to remove duplication in some
4218 *) Add a special meaning when SET OF and SEQUENCE OF flags are both
4219 set (this was treated exactly the same as SET OF previously). This
4220 is used to reorder the STACK representing the structure to match the
4221 encoding. This will be used to get round a problem where a PKCS7
4222 structure which was signed could not be verified because the STACK
4223 order did not reflect the encoded order.
4226 *) Reimplement the OCSP ASN1 module using the new code.
4229 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure
4230 for its ASN1 operations. The old style function pointers still exist
4231 for now but they will eventually go away.
4234 *) Merge in replacement ASN1 code from the ASN1 branch. This almost
4235 completely replaces the old ASN1 functionality with a table driven
4236 encoder and decoder which interprets an ASN1_ITEM structure describing
4237 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is
4238 largely maintained. Almost all of the old asn1_mac.h macro based ASN1
4239 has also been converted to the new form.
4242 *) Change BN_mod_exp_recp so that negative moduli are tolerated
4243 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set
4244 so that BN_mod_exp_mont and BN_mod_exp_mont_word work
4245 for negative moduli.
4248 *) Fix BN_uadd and BN_usub: Always return non-negative results instead
4249 of not touching the result's sign bit.
4252 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be
4256 *) Changed the LHASH code to use prototypes for callbacks, and created
4257 macros to declare and implement thin (optionally static) functions
4258 that provide type-safety and avoid function pointer casting for the
4259 type-specific callbacks.
4262 *) Added Kerberos Cipher Suites to be used with TLS, as written in
4264 [Veers Staats <staatsvr@asc.hpc.mil>,
4265 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte]
4267 *) Reformat the FAQ so the different questions and answers can be divided
4268 in sections depending on the subject.
4271 *) Have the zlib compression code load ZLIB.DLL dynamically under
4275 *) New function BN_mod_sqrt for computing square roots modulo a prime
4276 (using the probabilistic Tonelli-Shanks algorithm unless
4277 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can
4278 be handled deterministically).
4279 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4281 *) Make BN_mod_inverse faster by explicitly handling small quotients
4282 in the Euclid loop. (Speed gain about 20% for small moduli [256 or
4283 512 bits], about 30% for larger ones [1024 or 2048 bits].)
4286 *) New function BN_kronecker.
4289 *) Fix BN_gcd so that it works on negative inputs; the result is
4290 positive unless both parameters are zero.
4291 Previously something reasonably close to an infinite loop was
4292 possible because numbers could be growing instead of shrinking
4293 in the implementation of Euclid's algorithm.
4296 *) Fix BN_is_word() and BN_is_one() macros to take into account the
4297 sign of the number in question.
4299 Fix BN_is_word(a,w) to work correctly for w == 0.
4301 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w)
4302 because its test if the absolute value of 'a' equals 'w'.
4303 Note that BN_abs_is_word does *not* handle w == 0 reliably;
4304 it exists mostly for use in the implementations of BN_is_zero(),
4305 BN_is_one(), and BN_is_word().
4308 *) New function BN_swap.
4311 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that
4312 the exponentiation functions are more likely to produce reasonable
4313 results on negative inputs.
4316 *) Change BN_mod_mul so that the result is always non-negative.
4317 Previously, it could be negative if one of the factors was negative;
4318 I don't think anyone really wanted that behaviour.
4321 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c
4322 (except for exponentiation, which stays in crypto/bn/bn_exp.c,
4323 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c)
4324 and add new functions:
4333 BN_mod_lshift1_quick
4337 These functions always generate non-negative results.
4339 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r
4340 such that |m| < r < 0, BN_nnmod will output rem + |m| instead).
4342 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as
4343 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b]
4344 be reduced modulo m.
4345 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller]
4348 The following entry accidentily appeared in the CHANGES file
4349 distributed with OpenSSL 0.9.7. The modifications described in
4350 it do *not* apply to OpenSSL 0.9.7.
4352 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there
4353 was actually never needed) and in BN_mul(). The removal in BN_mul()
4354 required a small change in bn_mul_part_recursive() and the addition
4355 of the functions bn_cmp_part_words(), bn_sub_part_words() and
4356 bn_add_part_words(), which do the same thing as bn_cmp_words(),
4357 bn_sub_words() and bn_add_words() except they take arrays with
4362 *) In 'openssl passwd', verify passwords read from the terminal
4363 unless the '-salt' option is used (which usually means that
4364 verification would just waste user's time since the resulting
4365 hash is going to be compared with some given password hash)
4366 or the new '-noverify' option is used.
4368 This is an incompatible change, but it does not affect
4369 non-interactive use of 'openssl passwd' (passwords on the command
4370 line, '-stdin' option, '-in ...' option) and thus should not
4374 *) Remove all references to RSAref, since there's no more need for it.
4377 *) Make DSO load along a path given through an environment variable
4378 (SHLIB_PATH) with shl_load().
4381 *) Constify the ENGINE code as a result of BIGNUM constification.
4382 Also constify the RSA code and most things related to it. In a
4383 few places, most notable in the depth of the ASN.1 code, ugly
4384 casts back to non-const were required (to be solved at a later
4388 *) Make it so the openssl application has all engines loaded by default.
4391 *) Constify the BIGNUM routines a little more.
4394 *) Add the following functions:
4396 ENGINE_load_cswift()
4398 ENGINE_load_atalla()
4400 ENGINE_load_builtin_engines()
4402 That way, an application can itself choose if external engines that
4403 are built-in in OpenSSL shall ever be used or not. The benefit is
4404 that applications won't have to be linked with libdl or other dso
4405 libraries unless it's really needed.
4407 Changed 'openssl engine' to load all engines on demand.
4408 Changed the engine header files to avoid the duplication of some
4409 declarations (they differed!).
4412 *) 'openssl engine' can now list capabilities.
4415 *) Better error reporting in 'openssl engine'.
4418 *) Never call load_dh_param(NULL) in s_server.
4421 *) Add engine application. It can currently list engines by name and
4422 identity, and test if they are actually available.
4425 *) Improve RPM specification file by forcing symbolic linking and making
4426 sure the installed documentation is also owned by root.root.
4427 [Damien Miller <djm@mindrot.org>]
4429 *) Give the OpenSSL applications more possibilities to make use of
4430 keys (public as well as private) handled by engines.
4433 *) Add OCSP code that comes from CertCo.
4436 *) Add VMS support for the Rijndael code.
4439 *) Added untested support for Nuron crypto accelerator.
4442 *) Add support for external cryptographic devices. This code was
4443 previously distributed separately as the "engine" branch.
4444 [Geoff Thorpe, Richard Levitte]
4446 *) Rework the filename-translation in the DSO code. It is now possible to
4447 have far greater control over how a "name" is turned into a filename
4448 depending on the operating environment and any oddities about the
4449 different shared library filenames on each system.
4452 *) Support threads on FreeBSD-elf in Configure.
4455 *) Fix for SHA1 assembly problem with MASM: it produces
4456 warnings about corrupt line number information when assembling
4457 with debugging information. This is caused by the overlapping
4459 [Bernd Matthes <mainbug@celocom.de>, Steve Henson]
4462 NCONF_get_number() has no error checking at all. As a replacement,
4463 NCONF_get_number_e() is defined (_e for "error checking") and is
4464 promoted strongly. The old NCONF_get_number is kept around for
4465 binary backward compatibility.
4466 Make it possible for methods to load from something other than a BIO,
4467 by providing a function pointer that is given a name instead of a BIO.
4468 For example, this could be used to load configuration data from an
4472 *) Fix for non blocking accept BIOs. Added new I/O special reason
4473 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs
4474 with non blocking I/O was not possible because no retry code was
4475 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover
4479 *) Added the beginnings of Rijndael support.
4482 *) Fix for bug in DirectoryString mask setting. Add support for
4483 X509_NAME_print_ex() in 'req' and X509_print_ex() function
4484 to allow certificate printing to more controllable, additional
4485 'certopt' option to 'x509' to allow new printing options to be
4489 *) Clean old EAY MD5 hack from e_os.h.
4492 Changes between 0.9.6l and 0.9.6m [17 Mar 2004]
4494 *) Fix null-pointer assignment in do_change_cipher_spec() revealed
4495 by using the Codenomicon TLS Test Tool (CVE-2004-0079)
4496 [Joe Orton, Steve Henson]
4498 Changes between 0.9.6k and 0.9.6l [04 Nov 2003]
4500 *) Fix additional bug revealed by the NISCC test suite:
4502 Stop bug triggering large recursion when presented with
4503 certain ASN.1 tags (CVE-2003-0851)
4506 Changes between 0.9.6j and 0.9.6k [30 Sep 2003]
4508 *) Fix various bugs revealed by running the NISCC test suite:
4510 Stop out of bounds reads in the ASN1 code when presented with
4511 invalid tags (CVE-2003-0543 and CVE-2003-0544).
4513 If verify callback ignores invalid public key errors don't try to check
4514 certificate signature with the NULL public key.
4518 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate
4519 if the server requested one: as stated in TLS 1.0 and SSL 3.0
4523 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional
4524 extra data after the compression methods not only for TLS 1.0
4525 but also for SSL 3.0 (as required by the specification).
4526 [Bodo Moeller; problem pointed out by Matthias Loepfe]
4528 *) Change X509_certificate_type() to mark the key as exported/exportable
4529 when it's 512 *bits* long, not 512 bytes.
4532 Changes between 0.9.6i and 0.9.6j [10 Apr 2003]
4534 *) Countermeasure against the Klima-Pokorny-Rosa extension of
4535 Bleichbacher's attack on PKCS #1 v1.5 padding: treat
4536 a protocol version number mismatch like a decryption error
4537 in ssl3_get_client_key_exchange (ssl/s3_srvr.c).
4540 *) Turn on RSA blinding by default in the default implementation
4541 to avoid a timing attack. Applications that don't want it can call
4542 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING.
4543 They would be ill-advised to do so in most cases.
4544 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller]
4546 *) Change RSA blinding code so that it works when the PRNG is not
4547 seeded (in this case, the secret RSA exponent is abused as
4548 an unpredictable seed -- if it is not unpredictable, there
4549 is no point in blinding anyway). Make RSA blinding thread-safe
4550 by remembering the creator's thread ID in rsa->blinding and
4551 having all other threads use local one-time blinding factors
4552 (this requires more computation than sharing rsa->blinding, but
4553 avoids excessive locking; and if an RSA object is not shared
4554 between threads, blinding will still be very fast).
4557 Changes between 0.9.6h and 0.9.6i [19 Feb 2003]
4559 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked
4560 via timing by performing a MAC computation even if incorrrect
4561 block cipher padding has been found. This is a countermeasure
4562 against active attacks where the attacker has to distinguish
4563 between bad padding and a MAC verification error. (CVE-2003-0078)
4565 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL),
4566 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and
4567 Martin Vuagnoux (EPFL, Ilion)]
4569 Changes between 0.9.6g and 0.9.6h [5 Dec 2002]
4571 *) New function OPENSSL_cleanse(), which is used to cleanse a section of
4572 memory from it's contents. This is done with a counter that will
4573 place alternating values in each byte. This can be used to solve
4574 two issues: 1) the removal of calls to memset() by highly optimizing
4575 compilers, and 2) cleansing with other values than 0, since those can
4576 be read through on certain media, for example a swap space on disk.
4579 *) Bugfix: client side session caching did not work with external caching,
4580 because the session->cipher setting was not restored when reloading
4581 from the external cache. This problem was masked, when
4582 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set.
4583 (Found by Steve Haslam <steve@araqnid.ddts.net>.)
4586 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total
4587 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33.
4588 [Zeev Lieber <zeev-l@yahoo.com>]
4590 *) Undo an undocumented change introduced in 0.9.6e which caused
4591 repeated calls to OpenSSL_add_all_ciphers() and
4592 OpenSSL_add_all_digests() to be ignored, even after calling
4596 *) Change the default configuration reader to deal with last line not
4597 being properly terminated.
4600 *) Change X509_NAME_cmp() so it applies the special rules on handling
4601 DN values that are of type PrintableString, as well as RDNs of type
4602 emailAddress where the value has the type ia5String.
4603 [stefank@valicert.com via Richard Levitte]
4605 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half
4606 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently
4607 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be
4608 the bitwise-OR of the two for use by the majority of applications
4609 wanting this behaviour, and update the docs. The documented
4610 behaviour and actual behaviour were inconsistent and had been
4611 changing anyway, so this is more a bug-fix than a behavioural
4613 [Geoff Thorpe, diagnosed by Nadav Har'El]
4615 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c
4616 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes).
4619 *) Fix initialization code race conditions in
4620 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(),
4621 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(),
4622 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(),
4623 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(),
4624 ssl2_get_cipher_by_char(),
4625 ssl3_get_cipher_by_char().
4626 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller]
4628 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after
4629 the cached sessions are flushed, as the remove_cb() might use ex_data
4630 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com>
4631 (see [openssl.org #212]).
4632 [Geoff Thorpe, Lutz Jaenicke]
4634 *) Fix typo in OBJ_txt2obj which incorrectly passed the content
4635 length, instead of the encoding length to d2i_ASN1_OBJECT.
4638 Changes between 0.9.6f and 0.9.6g [9 Aug 2002]
4640 *) [In 0.9.6g-engine release:]
4641 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall').
4642 [Lynn Gazis <lgazis@rainbow.com>]
4644 Changes between 0.9.6e and 0.9.6f [8 Aug 2002]
4646 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX
4647 and get fix the header length calculation.
4648 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>,
4649 Alon Kantor <alonk@checkpoint.com> (and others),
4652 *) Use proper error handling instead of 'assertions' in buffer
4653 overflow checks added in 0.9.6e. This prevents DoS (the
4654 assertions could call abort()).
4655 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller]
4657 Changes between 0.9.6d and 0.9.6e [30 Jul 2002]
4659 *) Add various sanity checks to asn1_get_length() to reject
4660 the ASN1 length bytes if they exceed sizeof(long), will appear
4661 negative or the content length exceeds the length of the
4663 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4665 *) Fix cipher selection routines: ciphers without encryption had no flags
4666 for the cipher strength set and where therefore not handled correctly
4667 by the selection routines (PR #130).
4670 *) Fix EVP_dsa_sha macro.
4674 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
4675 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure
4676 that was added in OpenSSL 0.9.6d.
4678 As the countermeasure turned out to be incompatible with some
4679 broken SSL implementations, the new option is part of SSL_OP_ALL.
4680 SSL_OP_ALL is usually employed when compatibility with weird SSL
4681 implementations is desired (e.g. '-bugs' option to 's_client' and
4682 's_server'), so the new option is automatically set in many
4686 *) Changes in security patch:
4688 Changes marked "(CHATS)" were sponsored by the Defense Advanced
4689 Research Projects Agency (DARPA) and Air Force Research Laboratory,
4690 Air Force Materiel Command, USAF, under agreement number
4693 *) Add various sanity checks to asn1_get_length() to reject
4694 the ASN1 length bytes if they exceed sizeof(long), will appear
4695 negative or the content length exceeds the length of the
4696 supplied buffer. (CVE-2002-0659)
4697 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>]
4699 *) Assertions for various potential buffer overflows, not known to
4701 [Ben Laurie (CHATS)]
4703 *) Various temporary buffers to hold ASCII versions of integers were
4704 too small for 64 bit platforms. (CVE-2002-0655)
4705 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)>
4707 *) Remote buffer overflow in SSL3 protocol - an attacker could
4708 supply an oversized session ID to a client. (CVE-2002-0656)
4709 [Ben Laurie (CHATS)]
4711 *) Remote buffer overflow in SSL2 protocol - an attacker could
4712 supply an oversized client master key. (CVE-2002-0656)
4713 [Ben Laurie (CHATS)]
4715 Changes between 0.9.6c and 0.9.6d [9 May 2002]
4717 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not
4718 encoded as NULL) with id-dsa-with-sha1.
4719 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller]
4721 *) Check various X509_...() return values in apps/req.c.
4722 [Nils Larsch <nla@trustcenter.de>]
4724 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines:
4725 an end-of-file condition would erronously be flagged, when the CRLF
4726 was just at the end of a processed block. The bug was discovered when
4727 processing data through a buffering memory BIO handing the data to a
4728 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov
4729 <ptsekov@syntrex.com> and Nedelcho Stanev.
4732 *) Implement a countermeasure against a vulnerability recently found
4733 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment
4734 before application data chunks to avoid the use of known IVs
4735 with data potentially chosen by the attacker.
4738 *) Fix length checks in ssl3_get_client_hello().
4741 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently
4742 to prevent ssl3_read_internal() from incorrectly assuming that
4743 ssl3_read_bytes() found application data while handshake
4744 processing was enabled when in fact s->s3->in_read_app_data was
4745 merely automatically cleared during the initial handshake.
4746 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>]
4748 *) Fix object definitions for Private and Enterprise: they were not
4749 recognized in their shortname (=lowercase) representation. Extend
4750 obj_dat.pl to issue an error when using undefined keywords instead
4751 of silently ignoring the problem (Svenning Sorensen
4752 <sss@sss.dnsalias.net>).
4755 *) Fix DH_generate_parameters() so that it works for 'non-standard'
4756 generators, i.e. generators other than 2 and 5. (Previously, the
4757 code did not properly initialise the 'add' and 'rem' values to
4758 BN_generate_prime().)
4760 In the new general case, we do not insist that 'generator' is
4761 actually a primitive root: This requirement is rather pointless;
4762 a generator of the order-q subgroup is just as good, if not
4766 *) Map new X509 verification errors to alerts. Discovered and submitted by
4767 Tom Wu <tom@arcot.com>.
4770 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from
4771 returning non-zero before the data has been completely received
4772 when using non-blocking I/O.
4773 [Bodo Moeller; problem pointed out by John Hughes]
4775 *) Some of the ciphers missed the strength entry (SSL_LOW etc).
4776 [Ben Laurie, Lutz Jaenicke]
4778 *) Fix bug in SSL_clear(): bad sessions were not removed (found by
4779 Yoram Zahavi <YoramZ@gilian.com>).
4782 *) Add information about CygWin 1.3 and on, and preserve proper
4783 configuration for the versions before that.
4784 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte]
4786 *) Make removal from session cache (SSL_CTX_remove_session()) more robust:
4787 check whether we deal with a copy of a session and do not delete from
4788 the cache in this case. Problem reported by "Izhar Shoshani Levi"
4789 <izhar@checkpoint.com>.
4792 *) Do not store session data into the internal session cache, if it
4793 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
4794 flag is set). Proposed by Aslam <aslam@funk.com>.
4797 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested
4801 *) [In 0.9.6d-engine release:]
4802 Fix a crashbug and a logic bug in hwcrhk_load_pubkey().
4803 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte]
4805 *) Add the configuration target linux-s390x.
4806 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte]
4808 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of
4809 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag
4810 variable as an indication that a ClientHello message has been
4811 received. As the flag value will be lost between multiple
4812 invocations of ssl3_accept when using non-blocking I/O, the
4813 function may not be aware that a handshake has actually taken
4814 place, thus preventing a new session from being added to the
4817 To avoid this problem, we now set s->new_session to 2 instead of
4818 using a local variable.
4819 [Lutz Jaenicke, Bodo Moeller]
4821 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c)
4822 if the SSL_R_LENGTH_MISMATCH error is detected.
4823 [Geoff Thorpe, Bodo Moeller]
4825 *) New 'shared_ldflag' column in Configure platform table.
4828 *) Fix EVP_CIPHER_mode macro.
4829 ["Dan S. Camper" <dan@bti.net>]
4831 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown
4832 type, we must throw them away by setting rr->length to 0.
4833 [D P Chang <dpc@qualys.com>]
4835 Changes between 0.9.6b and 0.9.6c [21 dec 2001]
4837 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl
4838 <Dominikus.Scherkl@biodata.com>. (The previous implementation
4839 worked incorrectly for those cases where range = 10..._2 and
4840 3*range is two bits longer than range.)
4843 *) Only add signing time to PKCS7 structures if it is not already
4847 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce",
4848 OBJ_ld_ce should be OBJ_id_ce.
4849 Also some ip-pda OIDs in crypto/objects/objects.txt were
4850 incorrect (cf. RFC 3039).
4851 [Matt Cooper, Frederic Giudicelli, Bodo Moeller]
4853 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid()
4854 returns early because it has nothing to do.
4855 [Andy Schneider <andy.schneider@bjss.co.uk>]
4857 *) [In 0.9.6c-engine release:]
4858 Fix mutex callback return values in crypto/engine/hw_ncipher.c.
4859 [Andy Schneider <andy.schneider@bjss.co.uk>]
4861 *) [In 0.9.6c-engine release:]
4862 Add support for Cryptographic Appliance's keyserver technology.
4863 (Use engine 'keyclient')
4864 [Cryptographic Appliances and Geoff Thorpe]
4866 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89'
4867 is called via tools/c89.sh because arguments have to be
4868 rearranged (all '-L' options must appear before the first object
4870 [Richard Shapiro <rshapiro@abinitio.com>]
4872 *) [In 0.9.6c-engine release:]
4873 Add support for Broadcom crypto accelerator cards, backported
4875 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox]
4877 *) [In 0.9.6c-engine release:]
4878 Add support for SureWare crypto accelerator cards from
4879 Baltimore Technologies. (Use engine 'sureware')
4880 [Baltimore Technologies and Mark Cox]
4882 *) [In 0.9.6c-engine release:]
4883 Add support for crypto accelerator cards from Accelerated
4884 Encryption Processing, www.aep.ie. (Use engine 'aep')
4885 [AEP Inc. and Mark Cox]
4887 *) Add a configuration entry for gcc on UnixWare.
4888 [Gary Benson <gbenson@redhat.com>]
4890 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
4891 messages are stored in a single piece (fixed-length part and
4892 variable-length part combined) and fix various bugs found on the way.
4895 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname()
4896 instead. BIO_gethostbyname() does not know what timeouts are
4897 appropriate, so entries would stay in cache even when they have
4899 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com>
4901 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when
4902 faced with a pathologically small ClientHello fragment that does
4903 not contain client_version: Instead of aborting with an error,
4904 simply choose the highest available protocol version (i.e.,
4905 TLS 1.0 unless it is disabled). In practice, ClientHello
4906 messages are never sent like this, but this change gives us
4907 strictly correct behaviour at least for TLS.
4910 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear()
4911 never resets s->method to s->ctx->method when called from within
4912 one of the SSL handshake functions.
4913 [Bodo Moeller; problem pointed out by Niko Baric]
4915 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert
4916 (sent using the client's version number) if client_version is
4917 smaller than the protocol version in use. Also change
4918 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if
4919 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then
4920 the client will at least see that alert.
4923 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation
4927 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a
4928 client receives HelloRequest while in a handshake.
4929 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>]
4931 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C
4932 should end in 'break', not 'goto end' which circuments various
4933 cleanups done in state SSL_ST_OK. But session related stuff
4934 must be disabled for SSL_ST_OK in the case that we just sent a
4937 Also avoid some overhead by not calling ssl_init_wbio_buffer()
4938 before just sending a HelloRequest.
4939 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>]
4941 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't
4942 reveal whether illegal block cipher padding was found or a MAC
4943 verification error occured. (Neither SSLerr() codes nor alerts
4944 are directly visible to potential attackers, but the information
4945 may leak via logfiles.)
4947 Similar changes are not required for the SSL 2.0 implementation
4948 because the number of padding bytes is sent in clear for SSL 2.0,
4949 and the extra bytes are just ignored. However ssl/s2_pkt.c
4950 failed to verify that the purported number of padding bytes is in
4954 *) Add OpenUNIX-8 support including shared libraries
4955 (Boyd Lynn Gerber <gerberb@zenez.com>).
4958 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid
4959 'wristwatch attack' using huge encoding parameters (cf.
4960 James H. Manger's CRYPTO 2001 paper). Note that the
4961 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use
4962 encoding parameters and hence was not vulnerable.
4965 *) BN_sqr() bug fix.
4966 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>]
4968 *) Rabin-Miller test analyses assume uniformly distributed witnesses,
4969 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand()
4970 followed by modular reduction.
4971 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>]
4973 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range()
4974 equivalent based on BN_pseudo_rand() instead of BN_rand().
4977 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB).
4978 This function was broken, as the check for a new client hello message
4979 to handle SGC did not allow these large messages.
4980 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.)
4983 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long]().
4986 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl()
4987 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>).
4990 *) Rework the configuration and shared library support for Tru64 Unix.
4991 The configuration part makes use of modern compiler features and
4992 still retains old compiler behavior for those that run older versions
4993 of the OS. The shared library support part includes a variant that
4994 uses the RPATH feature, and is available through the special
4995 configuration target "alpha-cc-rpath", which will never be selected
4997 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte]
4999 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
5000 with the same message size as in ssl3_get_certificate_request().
5001 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
5002 messages might inadvertently be reject as too long.
5003 [Petr Lampa <lampa@fee.vutbr.cz>]
5005 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX).
5008 *) Modified SSL library such that the verify_callback that has been set
5009 specificly for an SSL object with SSL_set_verify() is actually being
5010 used. Before the change, a verify_callback set with this function was
5011 ignored and the verify_callback() set in the SSL_CTX at the time of
5012 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced
5013 to allow the necessary settings.
5016 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c
5017 explicitly to NULL, as at least on Solaris 8 this seems not always to be
5018 done automatically (in contradiction to the requirements of the C
5019 standard). This made problems when used from OpenSSH.
5022 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored
5023 dh->length and always used
5025 BN_rand_range(priv_key, dh->p).
5027 BN_rand_range() is not necessary for Diffie-Hellman, and this
5028 specific range makes Diffie-Hellman unnecessarily inefficient if
5029 dh->length (recommended exponent length) is much smaller than the
5030 length of dh->p. We could use BN_rand_range() if the order of
5031 the subgroup was stored in the DH structure, but we only have
5036 BN_rand(priv_key, l, ...)
5038 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1
5044 RSA_eay_public_encrypt
5045 RSA_eay_private_decrypt
5046 RSA_eay_private_encrypt (signing)
5047 RSA_eay_public_decrypt (signature verification)
5049 (default implementations for RSA_public_encrypt,
5050 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt),
5051 always reject numbers >= n.
5054 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2
5055 to synchronize access to 'locking_thread'. This is necessary on
5056 systems where access to 'locking_thread' (an 'unsigned long'
5057 variable) is not atomic.
5060 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID
5061 *before* setting the 'crypto_lock_rand' flag. The previous code had
5062 a race condition if 0 is a valid thread ID.
5063 [Travis Vitek <vitek@roguewave.com>]
5065 *) Add support for shared libraries under Irix.
5066 [Albert Chin-A-Young <china@thewrittenword.com>]
5068 *) Add configuration option to build on Linux on both big-endian and
5070 [Ralf Baechle <ralf@uni-koblenz.de>]
5072 *) Add the possibility to create shared libraries on HP-UX.
5075 Changes between 0.9.6a and 0.9.6b [9 Jul 2001]
5077 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c)
5078 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by
5079 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>:
5080 PRNG state recovery was possible based on the output of
5081 one PRNG request appropriately sized to gain knowledge on
5082 'md' followed by enough consecutive 1-byte PRNG requests
5083 to traverse all of 'state'.
5085 1. When updating 'md_local' (the current thread's copy of 'md')
5086 during PRNG output generation, hash all of the previous
5087 'md_local' value, not just the half used for PRNG output.
5089 2. Make the number of bytes from 'state' included into the hash
5090 independent from the number of PRNG bytes requested.
5092 The first measure alone would be sufficient to avoid
5093 Markku-Juhani's attack. (Actually it had never occurred
5094 to me that the half of 'md_local' used for chaining was the
5095 half from which PRNG output bytes were taken -- I had always
5096 assumed that the secret half would be used.) The second
5097 measure makes sure that additional data from 'state' is never
5098 mixed into 'md_local' in small portions; this heuristically
5099 further strengthens the PRNG.
5102 *) Fix crypto/bn/asm/mips3.s.
5105 *) When only the key is given to "enc", the IV is undefined. Print out
5106 an error message in this case.
5109 *) Handle special case when X509_NAME is empty in X509 printing routines.
5112 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are
5113 positive and less than q.
5116 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is
5117 used: it isn't thread safe and the add_lock_callback should handle
5119 [Paul Rose <Paul.Rose@bridge.com>]
5121 *) Verify that incoming data obeys the block size in
5122 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c).
5126 [Ulf Möller, Bodo Möller]
5128 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5
5129 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5
5130 when fixing the server behaviour for backwards-compatible 'client
5131 hello' messages. (Note that the attack is impractical against
5132 SSL 3.0 and TLS 1.0 anyway because length and version checking
5133 means that the probability of guessing a valid ciphertext is
5134 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98
5137 Before 0.9.5, the countermeasure (hide the error by generating a
5138 random 'decryption result') did not work properly because
5139 ERR_clear_error() was missing, meaning that SSL_get_error() would
5140 detect the supposedly ignored error.
5142 Both problems are now fixed.
5145 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096
5146 (previously it was 1024).
5149 *) Fix for compatibility mode trust settings: ignore trust settings
5150 unless some valid trust or reject settings are present.
5153 *) Fix for blowfish EVP: its a variable length cipher.
5156 *) Fix various bugs related to DSA S/MIME verification. Handle missing
5157 parameters in DSA public key structures and return an error in the
5158 DSA routines if parameters are absent.
5161 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd"
5162 in the current directory if neither $RANDFILE nor $HOME was set.
5163 RAND_file_name() in 0.9.6a returned NULL in this case. This has
5164 caused some confusion to Windows users who haven't defined $HOME.
5165 Thus RAND_file_name() is changed again: e_os.h can define a
5166 DEFAULT_HOME, which will be used if $HOME is not set.
5167 For Windows, we use "C:"; on other platforms, we still require
5168 environment variables.
5170 *) Move 'if (!initialized) RAND_poll()' into regions protected by
5171 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids
5172 having multiple threads call RAND_poll() concurrently.
5175 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a
5176 combination of a flag and a thread ID variable.
5177 Otherwise while one thread is in ssleay_rand_bytes (which sets the
5178 flag), *other* threads can enter ssleay_add_bytes without obeying
5179 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock
5180 that they do not hold after the first thread unsets add_do_not_lock).
5183 *) Change bctest again: '-x' expressions are not available in all
5187 Changes between 0.9.6 and 0.9.6a [5 Apr 2001]
5189 *) Fix a couple of memory leaks in PKCS7_dataDecode()
5190 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>]
5192 *) Change Configure and Makefiles to provide EXE_EXT, which will contain
5193 the default extension for executables, if any. Also, make the perl
5194 scripts that use symlink() to test if it really exists and use "cp"
5195 if it doesn't. All this made OpenSSL compilable and installable in
5199 *) Fix for asn1_GetSequence() for indefinite length constructed data.
5200 If SEQUENCE is length is indefinite just set c->slen to the total
5201 amount of data available.
5202 [Steve Henson, reported by shige@FreeBSD.org]
5203 [This change does not apply to 0.9.7.]
5205 *) Change bctest to avoid here-documents inside command substitution
5206 (workaround for FreeBSD /bin/sh bug).
5207 For compatibility with Ultrix, avoid shell functions (introduced
5208 in the bctest version that searches along $PATH).
5211 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes
5212 with des_encrypt() defined on some operating systems, like Solaris
5216 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton:
5217 On the Importance of Eliminating Errors in Cryptographic
5218 Computations, J. Cryptology 14 (2001) 2, 101-119,
5219 http://theory.stanford.edu/~dabo/papers/faults.ps.gz).
5222 *) MIPS assembler BIGNUM division bug fix.
5225 *) Disabled incorrect Alpha assembler code.
5228 *) Fix PKCS#7 decode routines so they correctly update the length
5229 after reading an EOC for the EXPLICIT tag.
5231 [This change does not apply to 0.9.7.]
5233 *) Fix bug in PKCS#12 key generation routines. This was triggered
5234 if a 3DES key was generated with a 0 initial byte. Include
5235 PKCS12_BROKEN_KEYGEN compilation option to retain the old
5236 (but broken) behaviour.
5239 *) Enhance bctest to search for a working bc along $PATH and print
5241 [Tim Rice <tim@multitalents.net> via Richard Levitte]
5243 *) Fix memory leaks in err.c: free err_data string if necessary;
5244 don't write to the wrong index in ERR_set_error_data.
5247 *) Implement ssl23_peek (analogous to ssl23_read), which previously
5251 *) Replace rdtsc with _emit statements for VC++ version 5.
5252 [Jeremy Cooper <jeremy@baymoo.org>]
5254 *) Make it possible to reuse SSLv2 sessions.
5257 *) In copy_email() check for >= 0 as a return value for
5258 X509_NAME_get_index_by_NID() since 0 is a valid index.
5259 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>]
5261 *) Avoid coredump with unsupported or invalid public keys by checking if
5262 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when
5263 PKCS7_verify() fails with non detached data.
5266 *) Don't use getenv in library functions when run as setuid/setgid.
5267 New function OPENSSL_issetugid().
5270 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c)
5271 due to incorrect handling of multi-threading:
5273 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl().
5275 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on().
5277 3. Count how many times MemCheck_off() has been called so that
5278 nested use can be treated correctly. This also avoids
5279 inband-signalling in the previous code (which relied on the
5280 assumption that thread ID 0 is impossible).
5283 *) Add "-rand" option also to s_client and s_server.
5286 *) Fix CPU detection on Irix 6.x.
5287 [Kurt Hockenbury <khockenb@stevens-tech.edu> and
5288 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5290 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME
5293 [This change does not apply to 0.9.7.]
5295 *) Use the cached encoding of an X509_NAME structure rather than
5296 copying it. This is apparently the reason for the libsafe "errors"
5297 but the code is actually correct.
5300 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent
5301 Bleichenbacher's DSA attack.
5302 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits
5303 to be set and top=0 forces the highest bit to be set; top=-1 is new
5304 and leaves the highest bit random.
5305 [Ulf Moeller, Bodo Moeller]
5307 *) In the NCONF_...-based implementations for CONF_... queries
5308 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using
5309 a temporary CONF structure with the data component set to NULL
5310 (which gives segmentation faults in lh_retrieve).
5311 Instead, use NULL for the CONF pointer in CONF_get_string and
5312 CONF_get_number (which may use environment variables) and directly
5313 return NULL from CONF_get_section.
5316 *) Fix potential buffer overrun for EBCDIC.
5319 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign
5320 keyUsage if basicConstraints absent for a CA.
5323 *) Make SMIME_write_PKCS7() write mail header values with a format that
5324 is more generally accepted (no spaces before the semicolon), since
5325 some programs can't parse those values properly otherwise. Also make
5326 sure BIO's that break lines after each write do not create invalid
5330 *) Make the CRL encoding routines work with empty SEQUENCE OF. The
5331 macros previously used would not encode an empty SEQUENCE OF
5332 and break the signature.
5334 [This change does not apply to 0.9.7.]
5336 *) Zero the premaster secret after deriving the master secret in
5340 *) Add some EVP_add_digest_alias registrations (as found in
5341 OpenSSL_add_all_digests()) to SSL_library_init()
5342 aka OpenSSL_add_ssl_algorithms(). This provides improved
5343 compatibility with peers using X.509 certificates
5344 with unconventional AlgorithmIdentifier OIDs.
5347 *) Fix for Irix with NO_ASM.
5348 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>]
5350 *) ./config script fixes.
5351 [Ulf Moeller, Richard Levitte]
5353 *) Fix 'openssl passwd -1'.
5356 *) Change PKCS12_key_gen_asc() so it can cope with non null
5357 terminated strings whose length is passed in the passlen
5358 parameter, for example from PEM callbacks. This was done
5359 by adding an extra length parameter to asc2uni().
5360 [Steve Henson, reported by <oddissey@samsung.co.kr>]
5362 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn
5363 call failed, free the DSA structure.
5366 *) Fix to uni2asc() to cope with zero length Unicode strings.
5367 These are present in some PKCS#12 files.
5370 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c).
5371 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits
5372 when writing a 32767 byte record.
5373 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>]
5375 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c),
5376 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}.
5378 (RSA objects have a reference count access to which is protected
5379 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c],
5380 so they are meant to be shared between threads.)
5381 [Bodo Moeller, Geoff Thorpe; original patch submitted by
5382 "Reddie, Steven" <Steven.Reddie@ca.com>]
5384 *) Fix a deadlock in CRYPTO_mem_leaks().
5387 *) Use better test patterns in bntest.
5390 *) rand_win.c fix for Borland C.
5393 *) BN_rshift bugfix for n == 0.
5396 *) Add a 'bctest' script that checks for some known 'bc' bugs
5397 so that 'make test' does not abort just because 'bc' is broken.
5400 *) Store verify_result within SSL_SESSION also for client side to
5401 avoid potential security hole. (Re-used sessions on the client side
5402 always resulted in verify_result==X509_V_OK, not using the original
5403 result of the server certificate verification.)
5406 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type
5407 SSL3_RT_APPLICATION_DATA, return 0.
5408 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true.
5412 Both ssl2_peek and ssl3_peek, which were totally broken in earlier
5413 releases, have been re-implemented by renaming the previous
5414 implementations of ssl2_read and ssl3_read to ssl2_read_internal
5415 and ssl3_read_internal, respectively, and adding 'peek' parameters
5416 to them. The new ssl[23]_{read,peek} functions are calls to
5417 ssl[23]_read_internal with the 'peek' flag set appropriately.
5418 A 'peek' parameter has also been added to ssl3_read_bytes, which
5419 does the actual work for ssl3_read_internal.
5422 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling
5423 the method-specific "init()" handler. Also clean up ex_data after
5424 calling the method-specific "finish()" handler. Previously, this was
5425 happening the other way round.
5428 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16.
5429 The previous value, 12, was not always sufficient for BN_mod_exp().
5432 *) Make sure that shared libraries get the internal name engine with
5433 the full version number and not just 0. This should mark the
5434 shared libraries as not backward compatible. Of course, this should
5435 be changed again when we can guarantee backward binary compatibility.
5438 *) Fix typo in get_cert_by_subject() in by_dir.c
5439 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>]
5441 *) Rework the system to generate shared libraries:
5443 - Make note of the expected extension for the shared libraries and
5444 if there is a need for symbolic links from for example libcrypto.so.0
5445 to libcrypto.so.0.9.7. There is extended info in Configure for
5448 - Make as few rebuilds of the shared libraries as possible.
5450 - Still avoid linking the OpenSSL programs with the shared libraries.
5452 - When installing, install the shared libraries separately from the
5456 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument.
5458 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new
5459 and not in SSL_clear because the latter is also used by the
5460 accept/connect functions; previously, the settings made by
5461 SSL_set_read_ahead would be lost during the handshake.
5462 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>]
5464 *) Correct util/mkdef.pl to be selective about disabled algorithms.
5465 Previously, it would create entries for disableed algorithms no
5469 *) Added several new manual pages for SSL_* function.
5472 Changes between 0.9.5a and 0.9.6 [24 Sep 2000]
5474 *) In ssl23_get_client_hello, generate an error message when faced
5475 with an initial SSL 3.0/TLS record that is too small to contain the
5476 first two bytes of the ClientHello message, i.e. client_version.
5477 (Note that this is a pathologic case that probably has never happened
5478 in real life.) The previous approach was to use the version number
5479 from the record header as a substitute; but our protocol choice
5480 should not depend on that one because it is not authenticated
5481 by the Finished messages.
5484 *) More robust randomness gathering functions for Windows.
5485 [Jeffrey Altman <jaltman@columbia.edu>]
5487 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is
5488 not set then we don't setup the error code for issuer check errors
5489 to avoid possibly overwriting other errors which the callback does
5490 handle. If an application does set the flag then we assume it knows
5491 what it is doing and can handle the new informational codes
5495 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for
5496 a general "ANY" type, as such it should be able to decode anything
5497 including tagged types. However it didn't check the class so it would
5498 wrongly interpret tagged types in the same way as their universal
5499 counterpart and unknown types were just rejected. Changed so that the
5500 tagged and unknown types are handled in the same way as a SEQUENCE:
5501 that is the encoding is stored intact. There is also a new type
5502 "V_ASN1_OTHER" which is used when the class is not universal, in this
5503 case we have no idea what the actual type is so we just lump them all
5507 *) On VMS, stdout may very well lead to a file that is written to
5508 in a record-oriented fashion. That means that every write() will
5509 write a separate record, which will be read separately by the
5510 programs trying to read from it. This can be very confusing.
5512 The solution is to put a BIO filter in the way that will buffer
5513 text until a linefeed is reached, and then write everything a
5514 line at a time, so every record written will be an actual line,
5515 not chunks of lines and not (usually doesn't happen, but I've
5516 seen it once) several lines in one record. BIO_f_linebuffer() is
5519 Currently, it's a VMS-only method, because that's where it has
5520 been tested well enough.
5523 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery,
5524 it can return incorrect results.
5525 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a,
5526 but it was in 0.9.6-beta[12].)
5529 *) Disable the check for content being present when verifying detached
5530 signatures in pk7_smime.c. Some versions of Netscape (wrongly)
5531 include zero length content when signing messages.
5534 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR
5535 BIO_ctrl (for BIO pairs).
5538 *) Add DSO method for VMS.
5541 *) Bug fix: Montgomery multiplication could produce results with the
5545 *) Add RPM specification openssl.spec and modify it to build three
5546 packages. The default package contains applications, application
5547 documentation and run-time libraries. The devel package contains
5548 include files, static libraries and function documentation. The
5549 doc package contains the contents of the doc directory. The original
5550 openssl.spec was provided by Damien Miller <djm@mindrot.org>.
5553 *) Add a large number of documentation files for many SSL routines.
5554 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
5556 *) Add a configuration entry for Sony News 4.
5557 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>]
5559 *) Don't set the two most significant bits to one when generating a
5560 random number < q in the DSA library.
5563 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default
5564 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if
5565 the underlying transport is blocking) if a handshake took place.
5566 (The default behaviour is needed by applications such as s_client
5567 and s_server that use select() to determine when to use SSL_read;
5568 but for applications that know in advance when to expect data, it
5569 just makes things more complicated.)
5572 *) Add RAND_egd_bytes(), which gives control over the number of bytes read
5576 *) Add a few more EBCDIC conditionals that make `req' and `x509'
5577 work better on such systems.
5578 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
5580 *) Add two demo programs for PKCS12_parse() and PKCS12_create().
5581 Update PKCS12_parse() so it copies the friendlyName and the
5582 keyid to the certificates aux info.
5585 *) Fix bug in PKCS7_verify() which caused an infinite loop
5586 if there was more than one signature.
5587 [Sven Uszpelkat <su@celocom.de>]
5589 *) Major change in util/mkdef.pl to include extra information
5590 about each symbol, as well as presentig variables as well
5591 as functions. This change means that there's n more need
5592 to rebuild the .num files when some algorithms are excluded.
5595 *) Allow the verify time to be set by an application,
5596 rather than always using the current time.
5599 *) Phase 2 verify code reorganisation. The certificate
5600 verify code now looks up an issuer certificate by a
5601 number of criteria: subject name, authority key id
5602 and key usage. It also verifies self signed certificates
5603 by the same criteria. The main comparison function is
5604 X509_check_issued() which performs these checks.
5606 Lot of changes were necessary in order to support this
5607 without completely rewriting the lookup code.
5609 Authority and subject key identifier are now cached.
5611 The LHASH 'certs' is X509_STORE has now been replaced
5612 by a STACK_OF(X509_OBJECT). This is mainly because an
5613 LHASH can't store or retrieve multiple objects with
5614 the same hash value.
5616 As a result various functions (which were all internal
5617 use only) have changed to handle the new X509_STORE
5618 structure. This will break anything that messed round
5619 with X509_STORE internally.
5621 The functions X509_STORE_add_cert() now checks for an
5622 exact match, rather than just subject name.
5624 The X509_STORE API doesn't directly support the retrieval
5625 of multiple certificates matching a given criteria, however
5626 this can be worked round by performing a lookup first
5627 (which will fill the cache with candidate certificates)
5628 and then examining the cache for matches. This is probably
5629 the best we can do without throwing out X509_LOOKUP
5630 entirely (maybe later...).
5632 The X509_VERIFY_CTX structure has been enhanced considerably.
5634 All certificate lookup operations now go via a get_issuer()
5635 callback. Although this currently uses an X509_STORE it
5636 can be replaced by custom lookups. This is a simple way
5637 to bypass the X509_STORE hackery necessary to make this
5638 work and makes it possible to use more efficient techniques
5639 in future. A very simple version which uses a simple
5640 STACK for its trusted certificate store is also provided
5641 using X509_STORE_CTX_trusted_stack().
5643 The verify_cb() and verify() callbacks now have equivalents
5644 in the X509_STORE_CTX structure.
5646 X509_STORE_CTX also has a 'flags' field which can be used
5647 to customise the verify behaviour.
5650 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which
5651 excludes S/MIME capabilities.
5654 *) When a certificate request is read in keep a copy of the
5655 original encoding of the signed data and use it when outputing
5656 again. Signatures then use the original encoding rather than
5657 a decoded, encoded version which may cause problems if the
5658 request is improperly encoded.
5661 *) For consistency with other BIO_puts implementations, call
5662 buffer_write(b, ...) directly in buffer_puts instead of calling
5665 In BIO_puts, increment b->num_write as in BIO_write.
5666 [Peter.Sylvester@EdelWeb.fr]
5668 *) Fix BN_mul_word for the case where the word is 0. (We have to use
5669 BN_zero, we may not return a BIGNUM with an array consisting of
5673 *) Avoid calling abort() from within the library when problems are
5674 detected, except if preprocessor symbols have been defined
5675 (such as REF_CHECK, BN_DEBUG etc.).
5678 *) New openssl application 'rsautl'. This utility can be
5679 used for low level RSA operations. DER public key
5680 BIO/fp routines also added.
5683 *) New Configure entry and patches for compiling on QNX 4.
5684 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>]
5686 *) A demo state-machine implementation was sponsored by
5687 Nuron (http://www.nuron.com/) and is now available in
5688 demos/state_machine.
5691 *) New options added to the 'dgst' utility for signature
5692 generation and verification.
5695 *) Unrecognized PKCS#7 content types are now handled via a
5696 catch all ASN1_TYPE structure. This allows unsupported
5697 types to be stored as a "blob" and an application can
5698 encode and decode it manually.
5701 *) Fix various signed/unsigned issues to make a_strex.c
5703 [Oscar Jacobsson <oscar.jacobsson@celocom.com>]
5705 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct
5706 length if passed a buffer. ASN1_INTEGER_to_BN failed
5707 if passed a NULL BN and its argument was negative.
5708 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>]
5710 *) Modification to PKCS#7 encoding routines to output definite
5711 length encoding. Since currently the whole structures are in
5712 memory there's not real point in using indefinite length
5713 constructed encoding. However if OpenSSL is compiled with
5714 the flag PKCS7_INDEFINITE_ENCODING the old form is used.
5717 *) Added BIO_vprintf() and BIO_vsnprintf().
5720 *) Added more prefixes to parse for in the the strings written
5721 through a logging bio, to cover all the levels that are available
5722 through syslog. The prefixes are now:
5724 PANIC, EMERG, EMR => LOG_EMERG
5725 ALERT, ALR => LOG_ALERT
5726 CRIT, CRI => LOG_CRIT
5727 ERROR, ERR => LOG_ERR
5728 WARNING, WARN, WAR => LOG_WARNING
5729 NOTICE, NOTE, NOT => LOG_NOTICE
5730 INFO, INF => LOG_INFO
5731 DEBUG, DBG => LOG_DEBUG
5733 and as before, if none of those prefixes are present at the
5734 beginning of the string, LOG_ERR is chosen.
5736 On Win32, the LOG_* levels are mapped according to this:
5738 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE
5739 LOG_WARNING => EVENTLOG_WARNING_TYPE
5740 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE
5744 *) Made it possible to reconfigure with just the configuration
5745 argument "reconf" or "reconfigure". The command line arguments
5746 are stored in Makefile.ssl in the variable CONFIGURE_ARGS,
5747 and are retrieved from there when reconfiguring.
5751 [Assar Westerlund <assar@sics.se>, Richard Levitte]
5753 *) Add the arguments -CAfile and -CApath to the pkcs12 utility.
5756 *) The obj_dat.pl script was messing up the sorting of object
5757 names. The reason was that it compared the quoted version
5758 of strings as a result "OCSP" > "OCSP Signing" because
5759 " > SPACE. Changed script to store unquoted versions of
5760 names and add quotes on output. It was also omitting some
5761 names from the lookup table if they were given a default
5762 value (that is if SN is missing it is given the same
5763 value as LN and vice versa), these are now added on the
5764 grounds that if an object has a name we should be able to
5765 look it up. Finally added warning output when duplicate
5766 short or long names are found.
5769 *) Changes needed for Tandem NSK.
5770 [Scott Uroff <scott@xypro.com>]
5772 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in
5773 RSA_padding_check_SSLv23(), special padding was never detected
5774 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol
5775 version rollback attacks was not effective.
5777 In s23_clnt.c, don't use special rollback-attack detection padding
5778 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the
5779 client; similarly, in s23_srvr.c, don't do the rollback check if
5780 SSL 2.0 is the only protocol enabled in the server.
5783 *) Make it possible to get hexdumps of unprintable data with 'openssl
5784 asn1parse'. By implication, the functions ASN1_parse_dump() and
5785 BIO_dump_indent() are added.
5788 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex()
5789 these print out strings and name structures based on various
5790 flags including RFC2253 support and proper handling of
5791 multibyte characters. Added options to the 'x509' utility
5792 to allow the various flags to be set.
5795 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME.
5796 Also change the functions X509_cmp_current_time() and
5797 X509_gmtime_adj() work with an ASN1_TIME structure,
5798 this will enable certificates using GeneralizedTime in validity
5799 dates to be checked.
5802 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid
5803 negative public key encodings) on by default,
5804 NO_NEG_PUBKEY_BUG can be set to disable it.
5807 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT
5808 content octets. An i2c_ASN1_OBJECT is unnecessary because
5809 the encoding can be trivially obtained from the structure.
5812 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock),
5813 not read locks (CRYPTO_r_[un]lock).
5816 *) A first attempt at creating official support for shared
5817 libraries through configuration. I've kept it so the
5818 default is static libraries only, and the OpenSSL programs
5819 are always statically linked for now, but there are
5820 preparations for dynamic linking in place.
5821 This has been tested on Linux and Tru64.
5824 *) Randomness polling function for Win9x, as described in:
5825 Peter Gutmann, Software Generation of Practically Strong
5829 *) Fix so PRNG is seeded in req if using an already existing
5833 *) New options to smime application. -inform and -outform
5834 allow alternative formats for the S/MIME message including
5835 PEM and DER. The -content option allows the content to be
5836 specified separately. This should allow things like Netscape
5837 form signing output easier to verify.
5840 *) Fix the ASN1 encoding of tags using the 'long form'.
5843 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT
5844 STRING types. These convert content octets to and from the
5845 underlying type. The actual tag and length octets are
5846 already assumed to have been read in and checked. These
5847 are needed because all other string types have virtually
5848 identical handling apart from the tag. By having versions
5849 of the ASN1 functions that just operate on content octets
5850 IMPLICIT tagging can be handled properly. It also allows
5851 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED
5852 and ASN1_INTEGER are identical apart from the tag.
5855 *) Change the handling of OID objects as follows:
5857 - New object identifiers are inserted in objects.txt, following
5858 the syntax given in objects.README.
5859 - objects.pl is used to process obj_mac.num and create a new
5861 - obj_dat.pl is used to create a new obj_dat.h, using the data in
5864 This is currently kind of a hack, and the perl code in objects.pl
5865 isn't very elegant, but it works as I intended. The simplest way
5866 to check that it worked correctly is to look in obj_dat.h and
5867 check the array nid_objs and make sure the objects haven't moved
5868 around (this is important!). Additions are OK, as well as
5869 consistent name changes.
5872 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1').
5875 *) Addition of the command line parameter '-rand file' to 'openssl req'.
5876 The given file adds to whatever has already been seeded into the
5877 random pool through the RANDFILE configuration file option or
5878 environment variable, or the default random state file.
5881 *) mkstack.pl now sorts each macro group into lexical order.
5882 Previously the output order depended on the order the files
5883 appeared in the directory, resulting in needless rewriting
5887 *) Patches to make OpenSSL compile under Win32 again. Mostly
5888 work arounds for the VC++ problem that it treats func() as
5889 func(void). Also stripped out the parts of mkdef.pl that
5890 added extra typesafe functions: these no longer exist.
5893 *) Reorganisation of the stack code. The macros are now all
5894 collected in safestack.h . Each macro is defined in terms of
5895 a "stack macro" of the form SKM_<name>(type, a, b). The
5896 DEBUG_SAFESTACK is now handled in terms of function casts,
5897 this has the advantage of retaining type safety without the
5898 use of additional functions. If DEBUG_SAFESTACK is not defined
5899 then the non typesafe macros are used instead. Also modified the
5900 mkstack.pl script to handle the new form. Needs testing to see
5901 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK
5902 the default if no major problems. Similar behaviour for ASN1_SET_OF
5903 and PKCS12_STACK_OF.
5906 *) When some versions of IIS use the 'NET' form of private key the
5907 key derivation algorithm is different. Normally MD5(password) is
5908 used as a 128 bit RC4 key. In the modified case
5909 MD5(MD5(password) + "SGCKEYSALT") is used insted. Added some
5910 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same
5911 as the old Netscape_RSA functions except they have an additional
5912 'sgckey' parameter which uses the modified algorithm. Also added
5913 an -sgckey command line option to the rsa utility. Thanks to
5914 Adrian Peck <bertie@ncipher.com> for posting details of the modified
5915 algorithm to openssl-dev.
5918 *) The evp_local.h macros were using 'c.##kname' which resulted in
5919 invalid expansion on some systems (SCO 5.0.5 for example).
5920 Corrected to 'c.kname'.
5921 [Phillip Porch <root@theporch.com>]
5923 *) New X509_get1_email() and X509_REQ_get1_email() functions that return
5924 a STACK of email addresses from a certificate or request, these look
5925 in the subject name and the subject alternative name extensions and
5926 omit any duplicate addresses.
5929 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows.
5930 This makes DSA verification about 2 % faster.
5933 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5
5934 (meaning that now 2^5 values will be precomputed, which is only 4 KB
5935 plus overhead for 1024 bit moduli).
5936 This makes exponentiations about 0.5 % faster for 1024 bit
5937 exponents (as measured by "openssl speed rsa2048").
5940 *) Rename memory handling macros to avoid conflicts with other
5942 Malloc => OPENSSL_malloc
5943 Malloc_locked => OPENSSL_malloc_locked
5944 Realloc => OPENSSL_realloc
5945 Free => OPENSSL_free
5948 *) New function BN_mod_exp_mont_word for small bases (roughly 15%
5949 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange).
5952 *) CygWin32 support.
5953 [John Jarvie <jjarvie@newsguy.com>]
5955 *) The type-safe stack code has been rejigged. It is now only compiled
5956 in when OpenSSL is configured with the DEBUG_SAFESTACK option and
5957 by default all type-specific stack functions are "#define"d back to
5958 standard stack functions. This results in more streamlined output
5959 but retains the type-safety checking possibilities of the original
5963 *) The STACK code has been cleaned up, and certain type declarations
5964 that didn't make a lot of sense have been brought in line. This has
5965 also involved a cleanup of sorts in safestack.h to more correctly
5966 map type-safe stack functions onto their plain stack counterparts.
5967 This work has also resulted in a variety of "const"ifications of
5968 lots of the code, especially "_cmp" operations which should normally
5969 be prototyped with "const" parameters anyway.
5972 *) When generating bytes for the first time in md_rand.c, 'stir the pool'
5973 by seeding with STATE_SIZE dummy bytes (with zero entropy count).
5974 (The PRNG state consists of two parts, the large pool 'state' and 'md',
5975 where all of 'md' is used each time the PRNG is used, but 'state'
5976 is used only indexed by a cyclic counter. As entropy may not be
5977 well distributed from the beginning, 'md' is important as a
5978 chaining variable. However, the output function chains only half
5979 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains
5980 all of 'md', and seeding with STATE_SIZE dummy bytes will result
5981 in all of 'state' being rewritten, with the new values depending
5982 on virtually all of 'md'. This overcomes the 80 bit limitation.)
5985 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when
5986 the handshake is continued after ssl_verify_cert_chain();
5987 otherwise, if SSL_VERIFY_NONE is set, remaining error codes
5988 can lead to 'unexplainable' connection aborts later.
5989 [Bodo Moeller; problem tracked down by Lutz Jaenicke]
5991 *) Major EVP API cipher revision.
5992 Add hooks for extra EVP features. This allows various cipher
5993 parameters to be set in the EVP interface. Support added for variable
5994 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and
5995 setting of RC2 and RC5 parameters.
5997 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length
6000 Remove lots of duplicated code from the EVP library. For example *every*
6001 cipher init() function handles the 'iv' in the same way according to the
6002 cipher mode. They also all do nothing if the 'key' parameter is NULL and
6003 for CFB and OFB modes they zero ctx->num.
6005 New functionality allows removal of S/MIME code RC2 hack.
6007 Most of the routines have the same form and so can be declared in terms
6010 By shifting this to the top level EVP_CipherInit() it can be removed from
6011 all individual ciphers. If the cipher wants to handle IVs or keys
6012 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT
6015 Change lots of functions like EVP_EncryptUpdate() to now return a
6016 value: although software versions of the algorithms cannot fail
6017 any installed hardware versions can.
6020 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if
6021 this option is set, tolerate broken clients that send the negotiated
6022 protocol version number instead of the requested protocol version
6026 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag;
6027 i.e. non-zero for export ciphersuites, zero otherwise.
6028 Previous versions had this flag inverted, inconsistent with
6029 rsa_tmp_cb (..._TMP_RSA_CB).
6030 [Bodo Moeller; problem reported by Amit Chopra]
6032 *) Add missing DSA library text string. Work around for some IIS
6033 key files with invalid SEQUENCE encoding.
6036 *) Add a document (doc/standards.txt) that list all kinds of standards
6037 and so on that are implemented in OpenSSL.
6040 *) Enhance c_rehash script. Old version would mishandle certificates
6041 with the same subject name hash and wouldn't handle CRLs at all.
6042 Added -fingerprint option to crl utility, to support new c_rehash
6046 *) Eliminate non-ANSI declarations in crypto.h and stack.h.
6049 *) Fix for SSL server purpose checking. Server checking was
6050 rejecting certificates which had extended key usage present
6051 but no ssl client purpose.
6052 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>]
6054 *) Make PKCS#12 code work with no password. The PKCS#12 spec
6055 is a little unclear about how a blank password is handled.
6056 Since the password in encoded as a BMPString with terminating
6057 double NULL a zero length password would end up as just the
6058 double NULL. However no password at all is different and is
6059 handled differently in the PKCS#12 key generation code. NS
6060 treats a blank password as zero length. MSIE treats it as no
6061 password on export: but it will try both on import. We now do
6062 the same: PKCS12_parse() tries zero length and no password if
6063 the password is set to "" or NULL (NULL is now a valid password:
6064 it wasn't before) as does the pkcs12 application.
6067 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use
6068 perror when PEM_read_bio_X509_REQ fails, the error message must
6069 be obtained from the error queue.
6072 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing
6073 it in ERR_remove_state if appropriate, and change ERR_get_state
6074 accordingly to avoid race conditions (this is necessary because
6075 thread_hash is no longer constant once set).
6078 *) Bugfix for linux-elf makefile.one.
6081 *) RSA_get_default_method() will now cause a default
6082 RSA_METHOD to be chosen if one doesn't exist already.
6083 Previously this was only set during a call to RSA_new()
6084 or RSA_new_method(NULL) meaning it was possible for
6085 RSA_get_default_method() to return NULL.
6088 *) Added native name translation to the existing DSO code
6089 that will convert (if the flag to do so is set) filenames
6090 that are sufficiently small and have no path information
6091 into a canonical native form. Eg. "blah" converted to
6092 "libblah.so" or "blah.dll" etc.
6095 *) New function ERR_error_string_n(e, buf, len) which is like
6096 ERR_error_string(e, buf), but writes at most 'len' bytes
6097 including the 0 terminator. For ERR_error_string_n, 'buf'
6099 [Damien Miller <djm@mindrot.org>, Bodo Moeller]
6101 *) CONF library reworked to become more general. A new CONF
6102 configuration file reader "class" is implemented as well as a
6103 new functions (NCONF_*, for "New CONF") to handle it. The now
6104 old CONF_* functions are still there, but are reimplemented to
6105 work in terms of the new functions. Also, a set of functions
6106 to handle the internal storage of the configuration data is
6107 provided to make it easier to write new configuration file
6108 reader "classes" (I can definitely see something reading a
6109 configuration file in XML format, for example), called _CONF_*,
6110 or "the configuration storage API"...
6112 The new configuration file reading functions are:
6114 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio,
6115 NCONF_get_section, NCONF_get_string, NCONF_get_numbre
6117 NCONF_default, NCONF_WIN32
6119 NCONF_dump_fp, NCONF_dump_bio
6121 NCONF_default and NCONF_WIN32 are method (or "class") choosers,
6122 NCONF_new creates a new CONF object. This works in the same way
6123 as other interfaces in OpenSSL, like the BIO interface.
6124 NCONF_dump_* dump the internal storage of the configuration file,
6125 which is useful for debugging. All other functions take the same
6126 arguments as the old CONF_* functions wth the exception of the
6127 first that must be a `CONF *' instead of a `LHASH *'.
6129 To make it easer to use the new classes with the old CONF_* functions,
6130 the function CONF_set_default_method is provided.
6133 *) Add '-tls1' option to 'openssl ciphers', which was already
6134 mentioned in the documentation but had not been implemented.
6135 (This option is not yet really useful because even the additional
6136 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.)
6139 *) Initial DSO code added into libcrypto for letting OpenSSL (and
6140 OpenSSL-based applications) load shared libraries and bind to
6141 them in a portable way.
6142 [Geoff Thorpe, with contributions from Richard Levitte]
6144 Changes between 0.9.5 and 0.9.5a [1 Apr 2000]
6146 *) Make sure _lrotl and _lrotr are only used with MSVC.
6148 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status
6149 (the default implementation of RAND_status).
6151 *) Rename openssl x509 option '-crlext', which was added in 0.9.5,
6152 to '-clrext' (= clear extensions), as intended and documented.
6153 [Bodo Moeller; inconsistency pointed out by Michael Attili
6156 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length
6157 was larger than the MD block size.
6158 [Steve Henson, pointed out by Yost William <YostW@tce.com>]
6160 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument
6161 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set()
6162 using the passed key: if the passed key was a private key the result
6163 of X509_print(), for example, would be to print out all the private key
6167 *) des_quad_cksum() byte order bug fix.
6168 [Ulf Möller, using the problem description in krb4-0.9.7, where
6169 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>]
6171 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly
6173 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>]
6175 *) For easily testing in shell scripts whether some command
6176 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX'
6177 returns with exit code 0 iff no command of the given name is available.
6178 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases,
6179 the output goes to stdout and nothing is printed to stderr.
6180 Additional arguments are always ignored.
6182 Since for each cipher there is a command of the same name,
6183 the 'no-cipher' compilation switches can be tested this way.
6185 ('openssl no-XXX' is not able to detect pseudo-commands such
6186 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.)
6189 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration.
6192 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE
6193 is set; it will be thrown away anyway because each handshake creates
6195 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition
6196 to parameters -- in previous versions (since OpenSSL 0.9.3) the
6197 'default key' from SSL_CTX_set_tmp_dh would always be lost, meanining
6198 you effectivly got SSL_OP_SINGLE_DH_USE when using this macro.
6201 *) New s_client option -ign_eof: EOF at stdin is ignored, and
6202 'Q' and 'R' lose their special meanings (quit/renegotiate).
6203 This is part of what -quiet does; unlike -quiet, -ign_eof
6204 does not suppress any output.
6207 *) Add compatibility options to the purpose and trust code. The
6208 purpose X509_PURPOSE_ANY is "any purpose" which automatically
6209 accepts a certificate or CA, this was the previous behaviour,
6210 with all the associated security issues.
6212 X509_TRUST_COMPAT is the old trust behaviour: only and
6213 automatically trust self signed roots in certificate store. A
6214 new trust setting X509_TRUST_DEFAULT is used to specify that
6215 a purpose has no associated trust setting and it should instead
6216 use the value in the default purpose.
6219 *) Fix the PKCS#8 DSA private key code so it decodes keys again
6220 and fix a memory leak.
6223 *) In util/mkerr.pl (which implements 'make errors'), preserve
6224 reason strings from the previous version of the .c file, as
6225 the default to have only downcase letters (and digits) in
6226 automatically generated reasons codes is not always appropriate.
6229 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table
6230 using strerror. Previously, ERR_reason_error_string() returned
6231 library names as reason strings for SYSerr; but SYSerr is a special
6232 case where small numbers are errno values, not library numbers.
6235 *) Add '-dsaparam' option to 'openssl dhparam' application. This
6236 converts DSA parameters into DH parameters. (When creating parameters,
6237 DSA_generate_parameters is used.)
6240 *) Include 'length' (recommended exponent length) in C code generated
6241 by 'openssl dhparam -C'.
6244 *) The second argument to set_label in perlasm was already being used
6245 so couldn't be used as a "file scope" flag. Moved to third argument
6249 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes
6250 instead of RAND_bytes for encryption IVs and salts.
6253 *) Include RAND_status() into RAND_METHOD instead of implementing
6254 it only for md_rand.c Otherwise replacing the PRNG by calling
6255 RAND_set_rand_method would be impossible.
6258 *) Don't let DSA_generate_key() enter an infinite loop if the random
6259 number generation fails.
6262 *) New 'rand' application for creating pseudo-random output.
6265 *) Added configuration support for Linux/IA64
6266 [Rolf Haberrecker <rolf@suse.de>]
6268 *) Assembler module support for Mingw32.
6271 *) Shared library support for HPUX (in shlib/).
6272 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous]
6274 *) Shared library support for Solaris gcc.
6275 [Lutz Behnke <behnke@trustcenter.de>]
6277 Changes between 0.9.4 and 0.9.5 [28 Feb 2000]
6279 *) PKCS7_encrypt() was adding text MIME headers twice because they
6280 were added manually and by SMIME_crlf_copy().
6283 *) In bntest.c don't call BN_rand with zero bits argument.
6284 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>]
6286 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n]
6287 case was implemented. This caused BN_div_recp() to fail occasionally.
6290 *) Add an optional second argument to the set_label() in the perl
6291 assembly language builder. If this argument exists and is set
6292 to 1 it signals that the assembler should use a symbol whose
6293 scope is the entire file, not just the current function. This
6294 is needed with MASM which uses the format label:: for this scope.
6295 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>]
6297 *) Change the ASN1 types so they are typedefs by default. Before
6298 almost all types were #define'd to ASN1_STRING which was causing
6299 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING)
6303 *) Change names of new functions to the new get1/get0 naming
6304 convention: After 'get1', the caller owns a reference count
6305 and has to call ..._free; 'get0' returns a pointer to some
6306 data structure without incrementing reference counters.
6307 (Some of the existing 'get' functions increment a reference
6308 counter, some don't.)
6309 Similarly, 'set1' and 'add1' functions increase reference
6310 counters or duplicate objects.
6313 *) Allow for the possibility of temp RSA key generation failure:
6314 the code used to assume it always worked and crashed on failure.
6317 *) Fix potential buffer overrun problem in BIO_printf().
6318 [Ulf Möller, using public domain code by Patrick Powell; problem
6319 pointed out by David Sacerdote <das33@cornell.edu>]
6321 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions
6322 RAND_egd() and RAND_status(). In the command line application,
6323 the EGD socket can be specified like a seed file using RANDFILE
6327 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
6328 Some CAs (e.g. Verisign) distribute certificates in this form.
6331 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
6332 list to exclude them. This means that no special compilation option
6333 is needed to use anonymous DH: it just needs to be included in the
6337 *) Change the EVP_MD_CTX_type macro so its meaning consistent with
6338 EVP_MD_type. The old functionality is available in a new macro called
6339 EVP_MD_md(). Change code that uses it and update docs.
6342 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions
6343 where the 'void *' argument is replaced by a function pointer argument.
6344 Previously 'void *' was abused to point to functions, which works on
6345 many platforms, but is not correct. As these functions are usually
6346 called by macros defined in OpenSSL header files, most source code
6347 should work without changes.
6350 *) <openssl/opensslconf.h> (which is created by Configure) now contains
6351 sections with information on -D... compiler switches used for
6352 compiling the library so that applications can see them. To enable
6353 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES
6354 must be defined. E.g.,
6355 #define OPENSSL_ALGORITHM_DEFINES
6356 #include <openssl/opensslconf.h>
6357 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc.
6358 [Richard Levitte, Ulf and Bodo Möller]
6360 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS
6364 *) Change the 'other' type in certificate aux info to a STACK_OF
6365 X509_ALGOR. Although not an AlgorithmIdentifier as such it has
6366 the required ASN1 format: arbitrary types determined by an OID.
6369 *) Add some PEM_write_X509_REQ_NEW() functions and a command line
6370 argument to 'req'. This is not because the function is newer or
6371 better than others it just uses the work 'NEW' in the certificate
6372 request header lines. Some software needs this.
6375 *) Reorganise password command line arguments: now passwords can be
6376 obtained from various sources. Delete the PEM_cb function and make
6377 it the default behaviour: i.e. if the callback is NULL and the
6378 usrdata argument is not NULL interpret it as a null terminated pass
6379 phrase. If usrdata and the callback are NULL then the pass phrase
6380 is prompted for as usual.
6383 *) Add support for the Compaq Atalla crypto accelerator. If it is installed,
6384 the support is automatically enabled. The resulting binaries will
6385 autodetect the card and use it if present.
6386 [Ben Laurie and Compaq Inc.]
6388 *) Work around for Netscape hang bug. This sends certificate request
6389 and server done in one record. Since this is perfectly legal in the
6390 SSL/TLS protocol it isn't a "bug" option and is on by default. See
6391 the bugs/SSLv3 entry for more info.
6394 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround.
6397 *) Add -rand argument to smime and pkcs12 applications and read/write
6401 *) New 'passwd' tool for crypt(3) and apr1 password hashes.
6404 *) Add command line password options to the remaining applications.
6407 *) Bug fix for BN_div_recp() for numerators with an even number of
6411 *) More tests in bntest.c, and changed test_bn output.
6414 *) ./config recognizes MacOS X now.
6417 *) Bug fix for BN_div() when the first words of num and divsor are
6418 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0).
6421 *) Add support for various broken PKCS#8 formats, and command line
6422 options to produce them.
6425 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to
6426 get temporary BIGNUMs from a BN_CTX.
6429 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont()
6433 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and
6434 include a #define from the old name to the new. The original intent
6435 was that statically linked binaries could for example just call
6436 SSLeay_add_all_ciphers() to just add ciphers to the table and not
6437 link with digests. This never worked becayse SSLeay_add_all_digests()
6438 and SSLeay_add_all_ciphers() were in the same source file so calling
6439 one would link with the other. They are now in separate source files.
6442 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'.
6445 *) Use a less unusual form of the Miller-Rabin primality test (it used
6446 a binary algorithm for exponentiation integrated into the Miller-Rabin
6447 loop, our standard modexp algorithms are faster).
6450 *) Support for the EBCDIC character set completed.
6451 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>]
6453 *) Source code cleanups: use const where appropriate, eliminate casts,
6454 use void * instead of char * in lhash.
6457 *) Bugfix: ssl3_send_server_key_exchange was not restartable
6458 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of
6459 this the server could overwrite ephemeral keys that the client
6463 *) Turn DSA_is_prime into a macro that calls BN_is_prime,
6464 using 50 iterations of the Rabin-Miller test.
6466 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50
6467 iterations of the Rabin-Miller test as required by the appendix
6468 to FIPS PUB 186[-1]) instead of DSA_is_prime.
6469 As BN_is_prime_fasttest includes trial division, DSA parameter
6470 generation becomes much faster.
6472 This implies a change for the callback functions in DSA_is_prime
6473 and DSA_generate_parameters: The callback function is called once
6474 for each positive witness in the Rabin-Miller test, not just
6475 occasionally in the inner loop; and the parameters to the
6476 callback function now provide an iteration count for the outer
6477 loop rather than for the current invocation of the inner loop.
6478 DSA_generate_parameters additionally can call the callback
6479 function with an 'iteration count' of -1, meaning that a
6480 candidate has passed the trial division test (when q is generated
6481 from an application-provided seed, trial division is skipped).
6484 *) New function BN_is_prime_fasttest that optionally does trial
6485 division before starting the Rabin-Miller test and has
6486 an additional BN_CTX * argument (whereas BN_is_prime always
6487 has to allocate at least one BN_CTX).
6488 'callback(1, -1, cb_arg)' is called when a number has passed the
6489 trial division stage.
6492 *) Fix for bug in CRL encoding. The validity dates weren't being handled
6496 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file.
6499 *) New function BN_pseudo_rand().
6502 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable)
6503 bignum version of BN_from_montgomery() with the working code from
6504 SSLeay 0.9.0 (the word based version is faster anyway), and clean up
6508 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that
6509 made it impossible to use the same SSL_SESSION data structure in
6510 SSL2 clients in multiple threads.
6513 *) The return value of RAND_load_file() no longer counts bytes obtained
6514 by stat(). RAND_load_file(..., -1) is new and uses the complete file
6515 to seed the PRNG (previously an explicit byte count was required).
6516 [Ulf Möller, Bodo Möller]
6518 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes
6519 used (char *) instead of (void *) and had casts all over the place.
6522 *) Make BN_generate_prime() return NULL on error if ret!=NULL.
6525 *) Retain source code compatibility for BN_prime_checks macro:
6526 BN_is_prime(..., BN_prime_checks, ...) now uses
6527 BN_prime_checks_for_size to determine the appropriate number of
6528 Rabin-Miller iterations.
6531 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to
6532 DH_CHECK_P_NOT_SAFE_PRIME.
6533 (Check if this is true? OpenPGP calls them "strong".)
6536 *) Merge the functionality of "dh" and "gendh" programs into a new program
6537 "dhparam". The old programs are retained for now but will handle DH keys
6538 (instead of parameters) in future.
6541 *) Make the ciphers, s_server and s_client programs check the return values
6542 when a new cipher list is set.
6545 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit
6546 ciphers. Before when the 56bit ciphers were enabled the sorting was
6549 The syntax for the cipher sorting has been extended to support sorting by
6550 cipher-strength (using the strength_bits hard coded in the tables).
6551 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod).
6553 Fix a bug in the cipher-command parser: when supplying a cipher command
6554 string with an "undefined" symbol (neither command nor alphanumeric
6555 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now
6556 an error is flagged.
6558 Due to the strength-sorting extension, the code of the
6559 ssl_create_cipher_list() function was completely rearranged. I hope that
6560 the readability was also increased :-)
6561 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>]
6563 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1
6564 for the first serial number and places 2 in the serial number file. This
6565 avoids problems when the root CA is created with serial number zero and
6566 the first user certificate has the same issuer name and serial number
6570 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses
6571 the new code. Add documentation for this stuff.
6574 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from
6575 X509_*() to X509at_*() on the grounds that they don't handle X509
6576 structures and behave in an analagous way to the X509v3 functions:
6577 they shouldn't be called directly but wrapper functions should be used
6580 So we also now have some wrapper functions that call the X509at functions
6581 when passed certificate requests. (TO DO: similar things can be done with
6582 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other
6583 things. Some of these need some d2i or i2d and print functionality
6584 because they handle more complex structures.)
6587 *) Add missing #ifndefs that caused missing symbols when building libssl
6588 as a shared library without RSA. Use #ifndef NO_SSL2 instead of
6589 NO_RSA in ssl/s2*.c.
6590 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller]
6592 *) Precautions against using the PRNG uninitialized: RAND_bytes() now
6593 has a return value which indicates the quality of the random data
6594 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's
6595 error queue. New function RAND_pseudo_bytes() generates output that is
6596 guaranteed to be unique but not unpredictable. RAND_add is like
6597 RAND_seed, but takes an extra argument for an entropy estimate
6598 (RAND_seed always assumes full entropy).
6601 *) Do more iterations of Rabin-Miller probable prime test (specifically,
6602 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes
6603 instead of only 2 for all lengths; see BN_prime_checks_for_size definition
6604 in crypto/bn/bn_prime.c for the complete table). This guarantees a
6605 false-positive rate of at most 2^-80 for random input.
6608 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs.
6611 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain
6612 in the 0.9.5 release), this returns the chain
6613 from an X509_CTX structure with a dup of the stack and all
6614 the X509 reference counts upped: so the stack will exist
6615 after X509_CTX_cleanup() has been called. Modify pkcs12.c
6618 Also make SSL_SESSION_print() print out the verify return
6622 *) Add manpage for the pkcs12 command. Also change the default
6623 behaviour so MAC iteration counts are used unless the new
6624 -nomaciter option is used. This improves file security and
6625 only older versions of MSIE (4.0 for example) need it.
6628 *) Honor the no-xxx Configure options when creating .DEF files.
6631 *) Add PKCS#10 attributes to field table: challengePassword,
6632 unstructuredName and unstructuredAddress. These are taken from
6633 draft PKCS#9 v2.0 but are compatible with v1.2 provided no
6634 international characters are used.
6636 More changes to X509_ATTRIBUTE code: allow the setting of types
6637 based on strings. Remove the 'loc' parameter when adding
6638 attributes because these will be a SET OF encoding which is sorted
6642 *) Initial changes to the 'req' utility to allow request generation
6643 automation. This will allow an application to just generate a template
6644 file containing all the field values and have req construct the
6647 Initial support for X509_ATTRIBUTE handling. Stacks of these are
6648 used all over the place including certificate requests and PKCS#7
6649 structures. They are currently handled manually where necessary with
6650 some primitive wrappers for PKCS#7. The new functions behave in a
6651 manner analogous to the X509 extension functions: they allow
6652 attributes to be looked up by NID and added.
6654 Later something similar to the X509V3 code would be desirable to
6655 automatically handle the encoding, decoding and printing of the
6656 more complex types. The string types like challengePassword can
6657 be handled by the string table functions.
6659 Also modified the multi byte string table handling. Now there is
6660 a 'global mask' which masks out certain types. The table itself
6661 can use the flag STABLE_NO_MASK to ignore the mask setting: this
6662 is useful when for example there is only one permissible type
6663 (as in countryName) and using the mask might result in no valid
6667 *) Clean up 'Finished' handling, and add functions SSL_get_finished and
6668 SSL_get_peer_finished to allow applications to obtain the latest
6669 Finished messages sent to the peer or expected from the peer,
6670 respectively. (SSL_get_peer_finished is usually the Finished message
6671 actually received from the peer, otherwise the protocol will be aborted.)
6673 As the Finished message are message digests of the complete handshake
6674 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
6675 be used for external authentication procedures when the authentication
6676 provided by SSL/TLS is not desired or is not enough.
6679 *) Enhanced support for Alpha Linux is added. Now ./config checks if
6680 the host supports BWX extension and if Compaq C is present on the
6681 $PATH. Just exploiting of the BWX extension results in 20-30%
6682 performance kick for some algorithms, e.g. DES and RC4 to mention
6683 a couple. Compaq C in turn generates ~20% faster code for MD5 and
6687 *) Add support for MS "fast SGC". This is arguably a violation of the
6688 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with
6689 weak crypto and after checking the certificate is SGC a second one
6690 with strong crypto. MS SGC stops the first handshake after receiving
6691 the server certificate message and sends a second client hello. Since
6692 a server will typically do all the time consuming operations before
6693 expecting any further messages from the client (server key exchange
6694 is the most expensive) there is little difference between the two.
6696 To get OpenSSL to support MS SGC we have to permit a second client
6697 hello message after we have sent server done. In addition we have to
6698 reset the MAC if we do get this second client hello.
6701 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide
6702 if a DER encoded private key is RSA or DSA traditional format. Changed
6703 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional"
6704 format DER encoded private key. Newer code should use PKCS#8 format which
6705 has the key type encoded in the ASN1 structure. Added DER private key
6706 support to pkcs8 application.
6709 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous
6710 ciphersuites has been selected (as required by the SSL 3/TLS 1
6711 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT
6712 is set, we interpret this as a request to violate the specification
6713 (the worst that can happen is a handshake failure, and 'correct'
6714 behaviour would result in a handshake failure anyway).
6717 *) In SSL_CTX_add_session, take into account that there might be multiple
6718 SSL_SESSION structures with the same session ID (e.g. when two threads
6719 concurrently obtain them from an external cache).
6720 The internal cache can handle only one SSL_SESSION with a given ID,
6721 so if there's a conflict, we now throw out the old one to achieve
6725 *) Add OIDs for idea and blowfish in CBC mode. This will allow both
6726 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to
6727 some routines that use cipher OIDs: some ciphers do not have OIDs
6728 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for
6732 *) Simplify the trust setting structure and code. Now we just have
6733 two sequences of OIDs for trusted and rejected settings. These will
6734 typically have values the same as the extended key usage extension
6735 and any application specific purposes.
6737 The trust checking code now has a default behaviour: it will just
6738 check for an object with the same NID as the passed id. Functions can
6739 be provided to override either the default behaviour or the behaviour
6740 for a given id. SSL client, server and email already have functions
6741 in place for compatibility: they check the NID and also return "trusted"
6742 if the certificate is self signed.
6745 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the
6746 traditional format into an EVP_PKEY structure.
6749 *) Add a password callback function PEM_cb() which either prompts for
6750 a password if usr_data is NULL or otherwise assumes it is a null
6751 terminated password. Allow passwords to be passed on command line
6752 environment or config files in a few more utilities.
6755 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private
6756 keys. Add some short names for PKCS#8 PBE algorithms and allow them
6757 to be specified on the command line for the pkcs8 and pkcs12 utilities.
6758 Update documentation.
6761 *) Support for ASN1 "NULL" type. This could be handled before by using
6762 ASN1_TYPE but there wasn't any function that would try to read a NULL
6763 and produce an error if it couldn't. For compatibility we also have
6764 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and
6765 don't allocate anything because they don't need to.
6768 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS
6770 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>]
6772 *) Rebuild of the memory allocation routines used by OpenSSL code and
6773 possibly others as well. The purpose is to make an interface that
6774 provide hooks so anyone can build a separate set of allocation and
6775 deallocation routines to be used by OpenSSL, for example memory
6776 pool implementations, or something else, which was previously hard
6777 since Malloc(), Realloc() and Free() were defined as macros having
6778 the values malloc, realloc and free, respectively (except for Win32
6779 compilations). The same is provided for memory debugging code.
6780 OpenSSL already comes with functionality to find memory leaks, but
6781 this gives people a chance to debug other memory problems.
6783 With these changes, a new set of functions and macros have appeared:
6785 CRYPTO_set_mem_debug_functions() [F]
6786 CRYPTO_get_mem_debug_functions() [F]
6787 CRYPTO_dbg_set_options() [F]
6788 CRYPTO_dbg_get_options() [F]
6789 CRYPTO_malloc_debug_init() [M]
6791 The memory debug functions are NULL by default, unless the library
6792 is compiled with CRYPTO_MDEBUG or friends is defined. If someone
6793 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which
6794 gives the standard debugging functions that come with OpenSSL) or
6795 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions
6796 provided by the library user) must be used. When the standard
6797 debugging functions are used, CRYPTO_dbg_set_options can be used to
6798 request additional information:
6799 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting
6800 the CRYPTO_MDEBUG_xxx macro when compiling the library.
6802 Also, things like CRYPTO_set_mem_functions will always give the
6803 expected result (the new set of functions is used for allocation
6804 and deallocation) at all times, regardless of platform and compiler
6807 To finish it up, some functions that were never use in any other
6808 way than through macros have a new API and new semantic:
6811 CRYPTO_dbg_realloc()
6814 All macros of value have retained their old syntax.
6815 [Richard Levitte and Bodo Moeller]
6817 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the
6818 ordering of SMIMECapabilities wasn't in "strength order" and there
6819 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature
6823 *) Some ASN1 types with illegal zero length encoding (INTEGER,
6824 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines.
6825 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson]
6827 *) Merge in my S/MIME library for OpenSSL. This provides a simple
6828 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough
6829 functionality to handle multipart/signed properly) and a utility
6830 called 'smime' to call all this stuff. This is based on code I
6831 originally wrote for Celo who have kindly allowed it to be
6832 included in OpenSSL.
6835 *) Add variants des_set_key_checked and des_set_key_unchecked of
6836 des_set_key (aka des_key_sched). Global variable des_check_key
6837 decides which of these is called by des_set_key; this way
6838 des_check_key behaves as it always did, but applications and
6839 the library itself, which was buggy for des_check_key == 1,
6840 have a cleaner way to pick the version they need.
6843 *) New function PKCS12_newpass() which changes the password of a
6847 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and
6848 dynamic mix. In both cases the ids can be used as an index into the
6849 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add()
6850 functions so they accept a list of the field values and the
6851 application doesn't need to directly manipulate the X509_TRUST
6855 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't
6859 *) Modify the way the V3 extension code looks up extensions. This now
6860 works in a similar way to the object code: we have some "standard"
6861 extensions in a static table which is searched with OBJ_bsearch()
6862 and the application can add dynamic ones if needed. The file
6863 crypto/x509v3/ext_dat.h now has the info: this file needs to be
6864 updated whenever a new extension is added to the core code and kept
6865 in ext_nid order. There is a simple program 'tabtest.c' which checks
6866 this. New extensions are not added too often so this file can readily
6867 be maintained manually.
6869 There are two big advantages in doing things this way. The extensions
6870 can be looked up immediately and no longer need to be "added" using
6871 X509V3_add_standard_extensions(): this function now does nothing.
6872 [Side note: I get *lots* of email saying the extension code doesn't
6873 work because people forget to call this function]
6874 Also no dynamic allocation is done unless new extensions are added:
6875 so if we don't add custom extensions there is no need to call
6876 X509V3_EXT_cleanup().
6879 *) Modify enc utility's salting as follows: make salting the default. Add a
6880 magic header, so unsalted files fail gracefully instead of just decrypting
6881 to garbage. This is because not salting is a big security hole, so people
6882 should be discouraged from doing it.
6885 *) Fixes and enhancements to the 'x509' utility. It allowed a message
6886 digest to be passed on the command line but it only used this
6887 parameter when signing a certificate. Modified so all relevant
6888 operations are affected by the digest parameter including the
6889 -fingerprint and -x509toreq options. Also -x509toreq choked if a
6890 DSA key was used because it didn't fix the digest.
6893 *) Initial certificate chain verify code. Currently tests the untrusted
6894 certificates for consistency with the verify purpose (which is set
6895 when the X509_STORE_CTX structure is set up) and checks the pathlength.
6897 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour:
6898 this is because it will reject chains with invalid extensions whereas
6899 every previous version of OpenSSL and SSLeay made no checks at all.
6901 Trust code: checks the root CA for the relevant trust settings. Trust
6902 settings have an initial value consistent with the verify purpose: e.g.
6903 if the verify purpose is for SSL client use it expects the CA to be
6904 trusted for SSL client use. However the default value can be changed to
6905 permit custom trust settings: one example of this would be to only trust
6906 certificates from a specific "secure" set of CAs.
6908 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions
6909 which should be used for version portability: especially since the
6910 verify structure is likely to change more often now.
6912 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions
6913 to set them. If not set then assume SSL clients will verify SSL servers
6916 Two new options to the verify program: -untrusted allows a set of
6917 untrusted certificates to be passed in and -purpose which sets the
6918 intended purpose of the certificate. If a purpose is set then the
6919 new chain verify code is used to check extension consistency.
6922 *) Support for the authority information access extension.
6925 *) Modify RSA and DSA PEM read routines to transparently handle
6926 PKCS#8 format private keys. New *_PUBKEY_* functions that handle
6927 public keys in a format compatible with certificate
6928 SubjectPublicKeyInfo structures. Unfortunately there were already
6929 functions called *_PublicKey_* which used various odd formats so
6930 these are retained for compatibility: however the DSA variants were
6931 never in a public release so they have been deleted. Changed dsa/rsa
6932 utilities to handle the new format: note no releases ever handled public
6933 keys so we should be OK.
6935 The primary motivation for this change is to avoid the same fiasco
6936 that dogs private keys: there are several incompatible private key
6937 formats some of which are standard and some OpenSSL specific and
6938 require various evil hacks to allow partial transparent handling and
6939 even then it doesn't work with DER formats. Given the option anything
6940 other than PKCS#8 should be dumped: but the other formats have to
6941 stay in the name of compatibility.
6943 With public keys and the benefit of hindsight one standard format
6944 is used which works with EVP_PKEY, RSA or DSA structures: though
6945 it clearly returns an error if you try to read the wrong kind of key.
6947 Added a -pubkey option to the 'x509' utility to output the public key.
6948 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*()
6949 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add
6950 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*())
6951 that do the same as the EVP_PKEY_assign_*() except they up the
6952 reference count of the added key (they don't "swallow" the
6956 *) Fixes to crypto/x509/by_file.c the code to read in certificates and
6957 CRLs would fail if the file contained no certificates or no CRLs:
6958 added a new function to read in both types and return the number
6959 read: this means that if none are read it will be an error. The
6960 DER versions of the certificate and CRL reader would always fail
6961 because it isn't possible to mix certificates and CRLs in DER format
6962 without choking one or the other routine. Changed this to just read
6963 a certificate: this is the best we can do. Also modified the code
6964 in apps/verify.c to take notice of return codes: it was previously
6965 attempting to read in certificates from NULL pointers and ignoring
6966 any errors: this is one reason why the cert and CRL reader seemed
6967 to work. It doesn't check return codes from the default certificate
6968 routines: these may well fail if the certificates aren't installed.
6971 *) Code to support otherName option in GeneralName.
6974 *) First update to verify code. Change the verify utility
6975 so it warns if it is passed a self signed certificate:
6976 for consistency with the normal behaviour. X509_verify
6977 has been modified to it will now verify a self signed
6978 certificate if *exactly* the same certificate appears
6979 in the store: it was previously impossible to trust a
6980 single self signed certificate. This means that:
6981 openssl verify ss.pem
6982 now gives a warning about a self signed certificate but
6983 openssl verify -CAfile ss.pem ss.pem
6987 *) For servers, store verify_result in SSL_SESSION data structure
6988 (and add it to external session representation).
6989 This is needed when client certificate verifications fails,
6990 but an application-provided verification callback (set by
6991 SSL_CTX_set_cert_verify_callback) allows accepting the session
6992 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK
6993 but returns 1): When the session is reused, we have to set
6994 ssl->verify_result to the appropriate error code to avoid
6996 [Bodo Moeller, problem pointed out by Lutz Jaenicke]
6998 *) Fix a bug in the new PKCS#7 code: it didn't consider the
6999 case in PKCS7_dataInit() where the signed PKCS7 structure
7000 didn't contain any existing data because it was being created.
7001 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson]
7003 *) Add a salt to the key derivation routines in enc.c. This
7004 forms the first 8 bytes of the encrypted file. Also add a
7005 -S option to allow a salt to be input on the command line.
7008 *) New function X509_cmp(). Oddly enough there wasn't a function
7009 to compare two certificates. We do this by working out the SHA1
7010 hash and comparing that. X509_cmp() will be needed by the trust
7014 *) SSL_get1_session() is like SSL_get_session(), but increments
7015 the reference count in the SSL_SESSION returned.
7016 [Geoff Thorpe <geoff@eu.c2.net>]
7018 *) Fix for 'req': it was adding a null to request attributes.
7019 Also change the X509_LOOKUP and X509_INFO code to handle
7020 certificate auxiliary information.
7023 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document
7027 *) Add the possibility to add extra information to the memory leak
7028 detecting output, to form tracebacks, showing from where each
7029 allocation was originated: CRYPTO_push_info("constant string") adds
7030 the string plus current file name and line number to a per-thread
7031 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info()
7032 is like calling CYRPTO_pop_info() until the stack is empty.
7033 Also updated memory leak detection code to be multi-thread-safe.
7036 *) Add options -text and -noout to pkcs7 utility and delete the
7037 encryption options which never did anything. Update docs.
7040 *) Add options to some of the utilities to allow the pass phrase
7041 to be included on either the command line (not recommended on
7042 OSes like Unix) or read from the environment. Update the
7043 manpages and fix a few bugs.
7046 *) Add a few manpages for some of the openssl commands.
7049 *) Fix the -revoke option in ca. It was freeing up memory twice,
7050 leaking and not finding already revoked certificates.
7053 *) Extensive changes to support certificate auxiliary information.
7054 This involves the use of X509_CERT_AUX structure and X509_AUX
7055 functions. An X509_AUX function such as PEM_read_X509_AUX()
7056 can still read in a certificate file in the usual way but it
7057 will also read in any additional "auxiliary information". By
7058 doing things this way a fair degree of compatibility can be
7059 retained: existing certificates can have this information added
7060 using the new 'x509' options.
7062 Current auxiliary information includes an "alias" and some trust
7063 settings. The trust settings will ultimately be used in enhanced
7064 certificate chain verification routines: currently a certificate
7065 can only be trusted if it is self signed and then it is trusted
7069 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD).
7070 The problem was that one of the replacement routines had not been working
7071 since SSLeay releases. For now the offending routine has been replaced
7072 with non-optimised assembler. Even so, this now gives around 95%
7073 performance improvement for 1024 bit RSA signs.
7076 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2
7077 handling. Most clients have the effective key size in bits equal to
7078 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key.
7079 A few however don't do this and instead use the size of the decrypted key
7080 to determine the RC2 key length and the AlgorithmIdentifier to determine
7081 the effective key length. In this case the effective key length can still
7082 be 40 bits but the key length can be 168 bits for example. This is fixed
7083 by manually forcing an RC2 key into the EVP_PKEY structure because the
7084 EVP code can't currently handle unusual RC2 key sizes: it always assumes
7085 the key length and effective key length are equal.
7088 *) Add a bunch of functions that should simplify the creation of
7089 X509_NAME structures. Now you should be able to do:
7090 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0);
7091 and have it automatically work out the correct field type and fill in
7092 the structures. The more adventurous can try:
7093 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0);
7094 and it will (hopefully) work out the correct multibyte encoding.
7097 *) Change the 'req' utility to use the new field handling and multibyte
7098 copy routines. Before the DN field creation was handled in an ad hoc
7099 way in req, ca, and x509 which was rather broken and didn't support
7100 BMPStrings or UTF8Strings. Since some software doesn't implement
7101 BMPStrings or UTF8Strings yet, they can be enabled using the config file
7102 using the dirstring_type option. See the new comment in the default
7103 openssl.cnf for more info.
7106 *) Make crypto/rand/md_rand.c more robust:
7107 - Assure unique random numbers after fork().
7108 - Make sure that concurrent threads access the global counter and
7109 md serializably so that we never lose entropy in them
7110 or use exactly the same state in multiple threads.
7111 Access to the large state is not always serializable because
7112 the additional locking could be a performance killer, and
7113 md should be large enough anyway.
7116 *) New file apps/app_rand.c with commonly needed functionality
7117 for handling the random seed file.
7119 Use the random seed file in some applications that previously did not:
7121 dsaparam -genkey (which also ignored its '-rand' option),
7124 x509 (when signing).
7125 Except on systems with /dev/urandom, it is crucial to have a random
7126 seed file at least for key creation, DSA signing, and for DH exchanges;
7127 for RSA signatures we could do without one.
7129 gendh and gendsa (unlike genrsa) used to read only the first byte
7130 of each file listed in the '-rand' option. The function as previously
7131 found in genrsa is now in app_rand.c and is used by all programs
7132 that support '-rand'.
7135 *) In RAND_write_file, use mode 0600 for creating files;
7136 don't just chmod when it may be too late.
7139 *) Report an error from X509_STORE_load_locations
7140 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed.
7143 *) New function ASN1_mbstring_copy() this copies a string in either
7144 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format
7145 into an ASN1_STRING type. A mask of permissible types is passed
7146 and it chooses the "minimal" type to use or an error if not type
7150 *) Add function equivalents to the various macros in asn1.h. The old
7151 macros are retained with an M_ prefix. Code inside the library can
7152 use the M_ macros. External code (including the openssl utility)
7153 should *NOT* in order to be "shared library friendly".
7156 *) Add various functions that can check a certificate's extensions
7157 to see if it usable for various purposes such as SSL client,
7158 server or S/MIME and CAs of these types. This is currently
7159 VERY EXPERIMENTAL but will ultimately be used for certificate chain
7160 verification. Also added a -purpose flag to x509 utility to
7161 print out all the purposes.
7164 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated
7168 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search
7169 for, obtain and decode and extension and obtain its critical flag.
7170 This allows all the necessary extension code to be handled in a
7171 single function call.
7174 *) RC4 tune-up featuring 30-40% performance improvement on most RISC
7175 platforms. See crypto/rc4/rc4_enc.c for further details.
7178 *) New -noout option to asn1parse. This causes no output to be produced
7179 its main use is when combined with -strparse and -out to extract data
7180 from a file (which may not be in ASN.1 format).
7183 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer
7184 when producing the local key id.
7185 [Richard Levitte <levitte@stacken.kth.se>]
7187 *) New option -dhparam in s_server. This allows a DH parameter file to be
7188 stated explicitly. If it is not stated then it tries the first server
7189 certificate file. The previous behaviour hard coded the filename
7193 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow
7194 a public key to be input or output. For example:
7195 openssl rsa -in key.pem -pubout -out pubkey.pem
7196 Also added necessary DSA public key functions to handle this.
7199 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained
7200 in the message. This was handled by allowing
7201 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it.
7202 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>]
7204 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null
7205 to the end of the strings whereas this didn't. This would cause problems
7206 if strings read with d2i_ASN1_bytes() were later modified.
7207 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>]
7209 *) Fix for base64 decode bug. When a base64 bio reads only one line of
7210 data and it contains EOF it will end up returning an error. This is
7211 caused by input 46 bytes long. The cause is due to the way base64
7212 BIOs find the start of base64 encoded data. They do this by trying a
7213 trial decode on each line until they find one that works. When they
7214 do a flag is set and it starts again knowing it can pass all the
7215 data directly through the decoder. Unfortunately it doesn't reset
7216 the context it uses. This means that if EOF is reached an attempt
7217 is made to pass two EOFs through the context and this causes the
7218 resulting error. This can also cause other problems as well. As is
7219 usual with these problems it takes *ages* to find and the fix is
7220 trivial: move one line.
7221 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ]
7223 *) Ugly workaround to get s_client and s_server working under Windows. The
7224 old code wouldn't work because it needed to select() on sockets and the
7225 tty (for keypresses and to see if data could be written). Win32 only
7226 supports select() on sockets so we select() with a 1s timeout on the
7227 sockets and then see if any characters are waiting to be read, if none
7228 are present then we retry, we also assume we can always write data to
7229 the tty. This isn't nice because the code then blocks until we've
7230 received a complete line of data and it is effectively polling the
7231 keyboard at 1s intervals: however it's quite a bit better than not
7232 working at all :-) A dedicated Windows application might handle this
7233 with an event loop for example.
7236 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign
7237 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions
7238 will be called when RSA_sign() and RSA_verify() are used. This is useful
7239 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available.
7240 For this to work properly RSA_public_decrypt() and RSA_private_encrypt()
7241 should *not* be used: RSA_sign() and RSA_verify() must be used instead.
7242 This necessitated the support of an extra signature type NID_md5_sha1
7243 for SSL signatures and modifications to the SSL library to use it instead
7244 of calling RSA_public_decrypt() and RSA_private_encrypt().
7247 *) Add new -verify -CAfile and -CApath options to the crl program, these
7248 will lookup a CRL issuers certificate and verify the signature in a
7249 similar way to the verify program. Tidy up the crl program so it
7250 no longer accesses structures directly. Make the ASN1 CRL parsing a bit
7251 less strict. It will now permit CRL extensions even if it is not
7252 a V2 CRL: this will allow it to tolerate some broken CRLs.
7255 *) Initialize all non-automatic variables each time one of the openssl
7256 sub-programs is started (this is necessary as they may be started
7257 multiple times from the "OpenSSL>" prompt).
7258 [Lennart Bang, Bodo Moeller]
7260 *) Preliminary compilation option RSA_NULL which disables RSA crypto without
7261 removing all other RSA functionality (this is what NO_RSA does). This
7262 is so (for example) those in the US can disable those operations covered
7263 by the RSA patent while allowing storage and parsing of RSA keys and RSA
7267 *) Non-copying interface to BIO pairs.
7268 (still largely untested)
7271 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive
7272 ASCII string. This was handled independently in various places before.
7275 *) New functions UTF8_getc() and UTF8_putc() that parse and generate
7276 UTF8 strings a character at a time.
7279 *) Use client_version from client hello to select the protocol
7280 (s23_srvr.c) and for RSA client key exchange verification
7281 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications.
7284 *) Add various utility functions to handle SPKACs, these were previously
7285 handled by poking round in the structure internals. Added new function
7286 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to
7287 print, verify and generate SPKACs. Based on an original idea from
7288 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified.
7291 *) RIPEMD160 is operational on all platforms and is back in 'make test'.
7294 *) Allow the config file extension section to be overwritten on the
7295 command line. Based on an original idea from Massimiliano Pala
7296 <madwolf@comune.modena.it>. The new option is called -extensions
7297 and can be applied to ca, req and x509. Also -reqexts to override
7298 the request extensions in req and -crlexts to override the crl extensions
7302 *) Add new feature to the SPKAC handling in ca. Now you can include
7303 the same field multiple times by preceding it by "XXXX." for example:
7306 this is the same syntax as used in the req config file.
7309 *) Allow certificate extensions to be added to certificate requests. These
7310 are specified in a 'req_extensions' option of the req section of the
7311 config file. They can be printed out with the -text option to req but
7312 are otherwise ignored at present.
7315 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first
7316 data read consists of only the final block it would not decrypted because
7317 EVP_CipherUpdate() would correctly report zero bytes had been decrypted.
7318 A misplaced 'break' also meant the decrypted final block might not be
7319 copied until the next read.
7322 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added
7323 a few extra parameters to the DH structure: these will be useful if
7324 for example we want the value of 'q' or implement X9.42 DH.
7327 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and
7328 provides hooks that allow the default DSA functions or functions on a
7329 "per key" basis to be replaced. This allows hardware acceleration and
7330 hardware key storage to be handled without major modification to the
7331 library. Also added low level modexp hooks and CRYPTO_EX structure and
7332 associated functions.
7335 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO
7336 as "read only": it can't be written to and the buffer it points to will
7337 not be freed. Reading from a read only BIO is much more efficient than
7338 a normal memory BIO. This was added because there are several times when
7339 an area of memory needs to be read from a BIO. The previous method was
7340 to create a memory BIO and write the data to it, this results in two
7341 copies of the data and an O(n^2) reading algorithm. There is a new
7342 function BIO_new_mem_buf() which creates a read only memory BIO from
7343 an area of memory. Also modified the PKCS#7 routines to use read only
7347 *) Bugfix: ssl23_get_client_hello did not work properly when called in
7348 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of
7349 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read,
7350 but a retry condition occured while trying to read the rest.
7353 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as
7354 NID_pkcs7_encrypted by default: this was wrong since this should almost
7355 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle
7356 the encrypted data type: this is a more sensible place to put it and it
7357 allows the PKCS#12 code to be tidied up that duplicated this
7361 *) Changed obj_dat.pl script so it takes its input and output files on
7362 the command line. This should avoid shell escape redirection problems
7366 *) Initial support for certificate extension requests, these are included
7367 in things like Xenroll certificate requests. Included functions to allow
7368 extensions to be obtained and added.
7371 *) -crlf option to s_client and s_server for sending newlines as
7372 CRLF (as required by many protocols).
7375 Changes between 0.9.3a and 0.9.4 [09 Aug 1999]
7377 *) Install libRSAglue.a when OpenSSL is built with RSAref.
7378 [Ralf S. Engelschall]
7380 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency.
7381 [Andrija Antonijevic <TheAntony2@bigfoot.com>]
7383 *) Fix -startdate and -enddate (which was missing) arguments to 'ca'
7387 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as
7388 DH parameters/keys (q is lost during that conversion, but the resulting
7389 DH parameters contain its length).
7391 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is
7392 much faster than DH_generate_parameters (which creates parameters
7393 where p = 2*q + 1), and also the smaller q makes DH computations
7394 much more efficient (160-bit exponentiation instead of 1024-bit
7395 exponentiation); so this provides a convenient way to support DHE
7396 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of
7397 utter importance to use
7398 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7400 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
7401 when such DH parameters are used, because otherwise small subgroup
7402 attacks may become possible!
7405 *) Avoid memory leak in i2d_DHparams.
7408 *) Allow the -k option to be used more than once in the enc program:
7409 this allows the same encrypted message to be read by multiple recipients.
7412 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts
7413 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then
7414 it will always use the numerical form of the OID, even if it has a short
7418 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp
7419 method only got called if p,q,dmp1,dmq1,iqmp components were present,
7420 otherwise bn_mod_exp was called. In the case of hardware keys for example
7421 no private key components need be present and it might store extra data
7422 in the RSA structure, which cannot be accessed from bn_mod_exp.
7423 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for
7424 private key operations.
7427 *) Added support for SPARC Linux.
7430 *) pem_password_cb function type incompatibly changed from
7431 typedef int pem_password_cb(char *buf, int size, int rwflag);
7433 ....(char *buf, int size, int rwflag, void *userdata);
7434 so that applications can pass data to their callbacks:
7435 The PEM[_ASN1]_{read,write}... functions and macros now take an
7436 additional void * argument, which is just handed through whenever
7437 the password callback is called.
7438 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller]
7440 New function SSL_CTX_set_default_passwd_cb_userdata.
7442 Compatibility note: As many C implementations push function arguments
7443 onto the stack in reverse order, the new library version is likely to
7444 interoperate with programs that have been compiled with the old
7445 pem_password_cb definition (PEM_whatever takes some data that
7446 happens to be on the stack as its last argument, and the callback
7447 just ignores this garbage); but there is no guarantee whatsoever that
7450 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=...
7451 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused
7452 problems not only on Windows, but also on some Unix platforms.
7453 To avoid problematic command lines, these definitions are now in an
7454 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl
7455 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds).
7458 *) MIPS III/IV assembler module is reimplemented.
7461 *) More DES library cleanups: remove references to srand/rand and
7462 delete an unused file.
7465 *) Add support for the the free Netwide assembler (NASM) under Win32,
7466 since not many people have MASM (ml) and it can be hard to obtain.
7467 This is currently experimental but it seems to work OK and pass all
7468 the tests. Check out INSTALL.W32 for info.
7471 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections
7472 without temporary keys kept an extra copy of the server key,
7473 and connections with temporary keys did not free everything in case
7477 *) New function RSA_check_key and new openssl rsa option -check
7478 for verifying the consistency of RSA keys.
7479 [Ulf Moeller, Bodo Moeller]
7481 *) Various changes to make Win32 compile work:
7482 1. Casts to avoid "loss of data" warnings in p5_crpt2.c
7483 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned
7484 comparison" warnings.
7485 3. Add sk_<TYPE>_sort to DEF file generator and do make update.
7488 *) Add a debugging option to PKCS#5 v2 key generation function: when
7489 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and
7490 derived keys are printed to stderr.
7493 *) Copy the flags in ASN1_STRING_dup().
7494 [Roman E. Pavlov <pre@mo.msk.ru>]
7496 *) The x509 application mishandled signing requests containing DSA
7497 keys when the signing key was also DSA and the parameters didn't match.
7499 It was supposed to omit the parameters when they matched the signing key:
7500 the verifying software was then supposed to automatically use the CA's
7501 parameters if they were absent from the end user certificate.
7503 Omitting parameters is no longer recommended. The test was also
7504 the wrong way round! This was probably due to unusual behaviour in
7505 EVP_cmp_parameters() which returns 1 if the parameters match.
7506 This meant that parameters were omitted when they *didn't* match and
7507 the certificate was useless. Certificates signed with 'ca' didn't have
7509 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>]
7511 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems.
7512 The interface is as follows:
7513 Applications can use
7514 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(),
7515 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop();
7516 "off" is now the default.
7517 The library internally uses
7518 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(),
7519 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on()
7520 to disable memory-checking temporarily.
7522 Some inconsistent states that previously were possible (and were
7523 even the default) are now avoided.
7525 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time
7526 with each memory chunk allocated; this is occasionally more helpful
7527 than just having a counter.
7529 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID.
7531 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future
7535 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX),
7536 which largely parallels "options", but is for changing API behaviour,
7537 whereas "options" are about protocol behaviour.
7538 Initial "mode" flags are:
7540 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when
7541 a single record has been written.
7542 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write
7543 retries use the same buffer location.
7544 (But all of the contents must be
7548 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options
7551 *) Fix problems with no-hmac etc.
7552 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>]
7554 *) New functions RSA_get_default_method(), RSA_set_method() and
7555 RSA_get_method(). These allows replacement of RSA_METHODs without having
7556 to mess around with the internals of an RSA structure.
7559 *) Fix memory leaks in DSA_do_sign and DSA_is_prime.
7560 Also really enable memory leak checks in openssl.c and in some
7562 [Chad C. Mulligan, Bodo Moeller]
7564 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess
7565 up the length of negative integers. This has now been simplified to just
7566 store the length when it is first determined and use it later, rather
7567 than trying to keep track of where data is copied and updating it to
7569 [Steve Henson, reported by Brien Wheeler
7570 <bwheeler@authentica-security.com>]
7572 *) Add a new function PKCS7_signatureVerify. This allows the verification
7573 of a PKCS#7 signature but with the signing certificate passed to the
7574 function itself. This contrasts with PKCS7_dataVerify which assumes the
7575 certificate is present in the PKCS#7 structure. This isn't always the
7576 case: certificates can be omitted from a PKCS#7 structure and be
7577 distributed by "out of band" means (such as a certificate database).
7580 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the
7581 function prototypes in pem.h, also change util/mkdef.pl to add the
7582 necessary function names.
7585 *) mk1mf.pl (used by Windows builds) did not properly read the
7586 options set by Configure in the top level Makefile, and Configure
7587 was not even able to write more than one option correctly.
7588 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended.
7591 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config
7592 file to be loaded from a BIO or FILE pointer. The BIO version will
7593 for example allow memory BIOs to contain config info.
7596 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS.
7597 Whoever hopes to achieve shared-library compatibility across versions
7598 must use this, not the compile-time macro.
7599 (Exercise 0.9.4: Which is the minimum library version required by
7601 Note: All this applies only to multi-threaded programs, others don't
7605 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests
7606 through a BIO pair triggered the default case, i.e.
7607 SSLerr(...,SSL_R_UNKNOWN_STATE).
7610 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications
7611 can use the SSL library even if none of the specific BIOs is
7615 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value
7616 for the encoded length.
7617 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>]
7619 *) Add initial documentation of the X509V3 functions.
7622 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and
7623 PEM_write_bio_PKCS8PrivateKey() that are equivalent to
7624 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more
7625 secure PKCS#8 private key format with a high iteration count.
7628 *) Fix determination of Perl interpreter: A perl or perl5
7629 _directory_ in $PATH was also accepted as the interpreter.
7630 [Ralf S. Engelschall]
7632 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking
7633 wrong with it but it was very old and did things like calling
7634 PEM_ASN1_read() directly and used MD5 for the hash not to mention some
7638 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed
7639 to use the new extension code.
7642 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c
7643 with macros. This should make it easier to change their form, add extra
7644 arguments etc. Fix a few PEM prototypes which didn't have cipher as a
7648 *) Add to configuration table a new entry that can specify an alternative
7649 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep,
7650 according to Mark Crispin <MRC@Panda.COM>.
7654 *) DES CBC did not update the IV. Weird.
7657 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does.
7658 Changing the behaviour of the former might break existing programs --
7659 where IV updating is needed, des_ncbc_encrypt can be used.
7662 *) When bntest is run from "make test" it drives bc to check its
7663 calculations, as well as internally checking them. If an internal check
7664 fails, it needs to cause bc to give a non-zero result or make test carries
7665 on without noticing the failure. Fixed.
7668 *) DES library cleanups.
7671 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be
7672 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit
7673 ciphers. NOTE: although the key derivation function has been verified
7674 against some published test vectors it has not been extensively tested
7675 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use
7679 *) Instead of "mkdir -p", which is not fully portable, use new
7680 Perl script "util/mkdir-p.pl".
7683 *) Rewrite the way password based encryption (PBE) is handled. It used to
7684 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter
7685 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms
7686 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now
7687 the 'parameter' field of the AlgorithmIdentifier is passed to the
7688 underlying key generation function so it must do its own ASN1 parsing.
7689 This has also changed the EVP_PBE_CipherInit() function which now has a
7690 'parameter' argument instead of literal salt and iteration count values
7691 and the function EVP_PBE_ALGOR_CipherInit() has been deleted.
7694 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms
7695 and PKCS#8 functionality. New 'pkcs8' application linked to openssl.
7696 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE
7697 KEY" because this clashed with PKCS#8 unencrypted string. Since this
7698 value was just used as a "magic string" and not used directly its
7699 value doesn't matter.
7702 *) Introduce some semblance of const correctness to BN. Shame C doesn't
7706 *) "linux-sparc64" configuration (ultrapenguin).
7707 [Ray Miller <ray.miller@oucs.ox.ac.uk>]
7708 "linux-sparc" configuration.
7709 [Christian Forster <fo@hawo.stw.uni-erlangen.de>]
7711 *) config now generates no-xxx options for missing ciphers.
7714 *) Support the EBCDIC character set (work in progress).
7715 File ebcdic.c not yet included because it has a different license.
7716 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7718 *) Support BS2000/OSD-POSIX.
7719 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>]
7721 *) Make callbacks for key generation use void * instead of char *.
7724 *) Make S/MIME samples compile (not yet tested).
7727 *) Additional typesafe stacks.
7730 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x).
7734 Changes between 0.9.3 and 0.9.3a [29 May 1999]
7736 *) New configuration variant "sco5-gcc".
7738 *) Updated some demos.
7739 [Sean O Riordain, Wade Scholine]
7741 *) Add missing BIO_free at exit of pkcs12 application.
7744 *) Fix memory leak in conf.c.
7747 *) Updates for Win32 to assembler version of MD5.
7750 *) Set #! path to perl in apps/der_chop to where we found it
7751 instead of using a fixed path.
7754 *) SHA library changes for irix64-mips4-cc.
7757 *) Improvements for VMS support.
7761 Changes between 0.9.2b and 0.9.3 [24 May 1999]
7763 *) Bignum library bug fix. IRIX 6 passes "make test" now!
7764 This also avoids the problems with SC4.2 and unpatched SC5.
7765 [Andy Polyakov <appro@fy.chalmers.se>]
7767 *) New functions sk_num, sk_value and sk_set to replace the previous macros.
7768 These are required because of the typesafe stack would otherwise break
7769 existing code. If old code used a structure member which used to be STACK
7770 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with
7771 sk_num or sk_value it would produce an error because the num, data members
7772 are not present in STACK_OF. Now it just produces a warning. sk_set
7773 replaces the old method of assigning a value to sk_value
7774 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code
7775 that does this will no longer work (and should use sk_set instead) but
7776 this could be regarded as a "questionable" behaviour anyway.
7779 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now
7780 correctly handle encrypted S/MIME data.
7783 *) Change type of various DES function arguments from des_cblock
7784 (which means, in function argument declarations, pointer to char)
7785 to des_cblock * (meaning pointer to array with 8 char elements),
7786 which allows the compiler to do more typechecking; it was like
7787 that back in SSLeay, but with lots of ugly casts.
7789 Introduce new type const_des_cblock.
7792 *) Reorganise the PKCS#7 library and get rid of some of the more obvious
7793 problems: find RecipientInfo structure that matches recipient certificate
7794 and initialise the ASN1 structures properly based on passed cipher.
7797 *) Belatedly make the BN tests actually check the results.
7800 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion
7801 to and from BNs: it was completely broken. New compilation option
7802 NEG_PUBKEY_BUG to allow for some broken certificates that encode public
7803 key elements as negative integers.
7806 *) Reorganize and speed up MD5.
7807 [Andy Polyakov <appro@fy.chalmers.se>]
7810 [Richard Levitte <richard@levitte.org>]
7812 *) New option -out to asn1parse to allow the parsed structure to be
7813 output to a file. This is most useful when combined with the -strparse
7814 option to examine the output of things like OCTET STRINGS.
7817 *) Make SSL library a little more fool-proof by not requiring any longer
7818 that SSL_set_{accept,connect}_state be called before
7819 SSL_{accept,connect} may be used (SSL_set_..._state is omitted
7820 in many applications because usually everything *appeared* to work as
7821 intended anyway -- now it really works as intended).
7824 *) Move openssl.cnf out of lib/.
7827 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall
7828 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes
7829 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+
7830 [Ralf S. Engelschall]
7832 *) Various fixes to the EVP and PKCS#7 code. It may now be able to
7833 handle PKCS#7 enveloped data properly.
7834 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve]
7836 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of
7837 copying pointers. The cert_st handling is changed by this in
7838 various ways (and thus what used to be known as ctx->default_cert
7839 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert
7840 any longer when s->cert does not give us what we need).
7841 ssl_cert_instantiate becomes obsolete by this change.
7842 As soon as we've got the new code right (possibly it already is?),
7843 we have solved a couple of bugs of the earlier code where s->cert
7844 was used as if it could not have been shared with other SSL structures.
7846 Note that using the SSL API in certain dirty ways now will result
7847 in different behaviour than observed with earlier library versions:
7848 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx)
7849 does not influence s as it used to.
7851 In order to clean up things more thoroughly, inside SSL_SESSION
7852 we don't use CERT any longer, but a new structure SESS_CERT
7853 that holds per-session data (if available); currently, this is
7854 the peer's certificate chain and, for clients, the server's certificate
7855 and temporary key. CERT holds only those values that can have
7856 meaningful defaults in an SSL_CTX.
7859 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure
7860 from the internal representation. Various PKCS#7 fixes: remove some
7861 evil casts and set the enc_dig_alg field properly based on the signing
7865 *) Allow PKCS#12 password to be set from the command line or the
7866 environment. Let 'ca' get its config file name from the environment
7867 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req'
7871 *) Allow certificate policies extension to use an IA5STRING for the
7872 organization field. This is contrary to the PKIX definition but
7873 VeriSign uses it and IE5 only recognises this form. Document 'x509'
7877 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic,
7878 without disallowing inline assembler and the like for non-pedantic builds.
7881 *) Support Borland C++ builder.
7882 [Janez Jere <jj@void.si>, modified by Ulf Möller]
7887 *) SHA-1 cleanups and performance enhancements.
7888 [Andy Polyakov <appro@fy.chalmers.se>]
7890 *) Sparc v8plus assembler for the bignum library.
7891 [Andy Polyakov <appro@fy.chalmers.se>]
7893 *) Accept any -xxx and +xxx compiler options in Configure.
7896 *) Update HPUX configuration.
7899 *) Add missing sk_<type>_unshift() function to safestack.h
7900 [Ralf S. Engelschall]
7902 *) New function SSL_CTX_use_certificate_chain_file that sets the
7903 "extra_cert"s in addition to the certificate. (This makes sense
7904 only for "PEM" format files, as chains as a whole are not
7908 *) Support verify_depth from the SSL API.
7909 x509_vfy.c had what can be considered an off-by-one-error:
7910 Its depth (which was not part of the external interface)
7911 was actually counting the number of certificates in a chain;
7912 now it really counts the depth.
7915 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used
7916 instead of X509err, which often resulted in confusing error
7917 messages since the error codes are not globally unique
7918 (e.g. an alleged error in ssl3_accept when a certificate
7919 didn't match the private key).
7921 *) New function SSL_CTX_set_session_id_context that allows to set a default
7922 value (so that you don't need SSL_set_session_id_context for each
7923 connection using the SSL_CTX).
7926 *) OAEP decoding bug fix.
7929 *) Support INSTALL_PREFIX for package builders, as proposed by
7933 *) New Configure options "threads" and "no-threads". For systems
7934 where the proper compiler options are known (currently Solaris
7935 and Linux), "threads" is the default.
7938 *) New script util/mklink.pl as a faster substitute for util/mklink.sh.
7941 *) Install various scripts to $(OPENSSLDIR)/misc, not to
7942 $(INSTALLTOP)/bin -- they shouldn't clutter directories
7943 such as /usr/local/bin.
7946 *) "make linux-shared" to build shared libraries.
7947 [Niels Poppe <niels@netbox.org>]
7949 *) New Configure option no-<cipher> (rsa, idea, rc5, ...).
7952 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for
7953 extension adding in x509 utility.
7956 *) Remove NOPROTO sections and error code comments.
7959 *) Partial rewrite of the DEF file generator to now parse the ANSI
7963 *) New Configure options --prefix=DIR and --openssldir=DIR.
7966 *) Complete rewrite of the error code script(s). It is all now handled
7967 by one script at the top level which handles error code gathering,
7968 header rewriting and C source file generation. It should be much better
7969 than the old method: it now uses a modified version of Ulf's parser to
7970 read the ANSI prototypes in all header files (thus the old K&R definitions
7971 aren't needed for error creation any more) and do a better job of
7972 translating function codes into names. The old 'ASN1 error code imbedded
7973 in a comment' is no longer necessary and it doesn't use .err files which
7974 have now been deleted. Also the error code call doesn't have to appear all
7975 on one line (which resulted in some large lines...).
7978 *) Change #include filenames from <foo.h> to <openssl/foo.h>.
7981 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return
7982 0 (which usually indicates a closed connection), but continue reading.
7985 *) Fix some race conditions.
7988 *) Add support for CRL distribution points extension. Add Certificate
7989 Policies and CRL distribution points documentation.
7992 *) Move the autogenerated header file parts to crypto/opensslconf.h.
7995 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of
7996 8 of keying material. Merlin has also confirmed interop with this fix
7997 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0.
7998 [Merlin Hughes <merlin@baltimore.ie>]
8000 *) Fix lots of warnings.
8001 [Richard Levitte <levitte@stacken.kth.se>]
8003 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if
8004 the directory spec didn't end with a LIST_SEPARATOR_CHAR.
8005 [Richard Levitte <levitte@stacken.kth.se>]
8007 *) Fix problems with sizeof(long) == 8.
8008 [Andy Polyakov <appro@fy.chalmers.se>]
8010 *) Change functions to ANSI C.
8013 *) Fix typos in error codes.
8014 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller]
8016 *) Remove defunct assembler files from Configure.
8019 *) SPARC v8 assembler BIGNUM implementation.
8020 [Andy Polyakov <appro@fy.chalmers.se>]
8022 *) Support for Certificate Policies extension: both print and set.
8023 Various additions to support the r2i method this uses.
8026 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could
8027 return a const string when you are expecting an allocated buffer.
8030 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE
8031 types DirectoryString and DisplayText.
8034 *) Add code to allow r2i extensions to access the configuration database,
8035 add an LHASH database driver and add several ctx helper functions.
8038 *) Fix an evil bug in bn_expand2() which caused various BN functions to
8039 fail when they extended the size of a BIGNUM.
8042 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to
8043 support typesafe stack.
8046 *) Fix typo in SSL_[gs]et_options().
8047 [Nils Frostberg <nils@medcom.se>]
8049 *) Delete various functions and files that belonged to the (now obsolete)
8050 old X509V3 handling code.
8053 *) New Configure option "rsaref".
8056 *) Don't auto-generate pem.h.
8059 *) Introduce type-safe ASN.1 SETs.
8062 *) Convert various additional casted stacks to type-safe STACK_OF() variants.
8063 [Ben Laurie, Ralf S. Engelschall, Steve Henson]
8065 *) Introduce type-safe STACKs. This will almost certainly break lots of code
8066 that links with OpenSSL (well at least cause lots of warnings), but fear
8067 not: the conversion is trivial, and it eliminates loads of evil casts. A
8068 few STACKed things have been converted already. Feel free to convert more.
8069 In the fullness of time, I'll do away with the STACK type altogether.
8072 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate
8073 specified in <certfile> by updating the entry in the index.txt file.
8074 This way one no longer has to edit the index.txt file manually for
8075 revoking a certificate. The -revoke option does the gory details now.
8076 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall]
8078 *) Fix `openssl crl -noout -text' combination where `-noout' killed the
8079 `-text' option at all and this way the `-noout -text' combination was
8080 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'.
8081 [Ralf S. Engelschall]
8083 *) Make sure a corresponding plain text error message exists for the
8084 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a
8085 verify callback function determined that a certificate was revoked.
8086 [Ralf S. Engelschall]
8088 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for
8089 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test
8090 all available cipers including rc5, which was forgotten until now.
8091 In order to let the testing shell script know which algorithms
8092 are available, a new (up to now undocumented) command
8093 "openssl list-cipher-commands" is used.
8096 *) Bugfix: s_client occasionally would sleep in select() when
8097 it should have checked SSL_pending() first.
8100 *) New functions DSA_do_sign and DSA_do_verify to provide access to
8101 the raw DSA values prior to ASN.1 encoding.
8104 *) Tweaks to Configure
8105 [Niels Poppe <niels@netbox.org>]
8107 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support,
8111 *) New variables $(RANLIB) and $(PERL) in the Makefiles.
8114 *) New config option to avoid instructions that are illegal on the 80386.
8115 The default code is faster, but requires at least a 486.
8118 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and
8119 SSL2_SERVER_VERSION (not used at all) macros, which are now the
8120 same as SSL2_VERSION anyway.
8123 *) New "-showcerts" option for s_client.
8126 *) Still more PKCS#12 integration. Add pkcs12 application to openssl
8127 application. Various cleanups and fixes.
8130 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and
8131 modify error routines to work internally. Add error codes and PBE init
8132 to library startup routines.
8135 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and
8136 packing functions to asn1 and evp. Changed function names and error
8137 codes along the way.
8140 *) PKCS12 integration: and so it begins... First of several patches to
8141 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12
8142 objects to objects.h
8145 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1
8146 and display support for Thawte strong extranet extension.
8149 *) Add LinuxPPC support.
8150 [Jeff Dubrule <igor@pobox.org>]
8152 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to
8153 bn_div_words in alpha.s.
8154 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie]
8156 *) Make sure the RSA OAEP test is skipped under -DRSAref because
8157 OAEP isn't supported when OpenSSL is built with RSAref.
8158 [Ulf Moeller <ulf@fitug.de>]
8160 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h
8161 so they no longer are missing under -DNOPROTO.
8162 [Soren S. Jorvang <soren@t.dk>]
8165 Changes between 0.9.1c and 0.9.2b [22 Mar 1999]
8167 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still
8168 doesn't work when the session is reused. Coming soon!
8171 *) Fix a security hole, that allows sessions to be reused in the wrong
8172 context thus bypassing client cert protection! All software that uses
8173 client certs and session caches in multiple contexts NEEDS PATCHING to
8174 allow session reuse! A fuller solution is in the works.
8175 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)]
8177 *) Some more source tree cleanups (removed obsolete files
8178 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed
8179 permission on "config" script to be executable) and a fix for the INSTALL
8181 [Ulf Moeller <ulf@fitug.de>]
8183 *) Remove some legacy and erroneous uses of malloc, free instead of
8185 [Lennart Bang <lob@netstream.se>, with minor changes by Steve]
8187 *) Make rsa_oaep_test return non-zero on error.
8188 [Ulf Moeller <ulf@fitug.de>]
8190 *) Add support for native Solaris shared libraries. Configure
8191 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice
8192 if someone would make that last step automatic.
8193 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>]
8195 *) ctx_size was not built with the right compiler during "make links". Fixed.
8198 *) Change the meaning of 'ALL' in the cipher list. It now means "everything
8199 except NULL ciphers". This means the default cipher list will no longer
8200 enable NULL ciphers. They need to be specifically enabled e.g. with
8201 the string "DEFAULT:eNULL".
8204 *) Fix to RSA private encryption routines: if p < q then it would
8205 occasionally produce an invalid result. This will only happen with
8206 externally generated keys because OpenSSL (and SSLeay) ensure p > q.
8209 *) Be less restrictive and allow also `perl util/perlpath.pl
8210 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin',
8211 because this way one can also use an interpreter named `perl5' (which is
8212 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still
8213 installed as `perl').
8214 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8216 *) Let util/clean-depend.pl work also with older Perl 5.00x versions.
8217 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8219 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add
8220 advapi32.lib to Win32 build and change the pem test comparision
8221 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the
8222 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h
8223 and crypto/des/ede_cbcm_enc.c.
8226 *) DES quad checksum was broken on big-endian architectures. Fixed.
8229 *) Comment out two functions in bio.h that aren't implemented. Fix up the
8230 Win32 test batch file so it (might) work again. The Win32 test batch file
8231 is horrible: I feel ill....
8234 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected
8235 in e_os.h. Audit of header files to check ANSI and non ANSI
8236 sections: 10 functions were absent from non ANSI section and not exported
8237 from Windows DLLs. Fixed up libeay.num for new functions.
8240 *) Make `openssl version' output lines consistent.
8241 [Ralf S. Engelschall]
8243 *) Fix Win32 symbol export lists for BIO functions: Added
8244 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data
8245 to ms/libeay{16,32}.def.
8246 [Ralf S. Engelschall]
8248 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled
8249 fine under Unix and passes some trivial tests I've now added. But the
8250 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was
8251 added to make sure no one expects that this stuff really works in the
8252 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources
8253 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and
8255 [Ralf S. Engelschall]
8257 *) Fix the generation of two part addresses in perl.
8258 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie]
8260 *) Add config entry for Linux on MIPS.
8261 [John Tobey <jtobey@channel1.com>]
8263 *) Make links whenever Configure is run, unless we are on Windoze.
8266 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf.
8267 Currently only issuerAltName and AuthorityKeyIdentifier make any sense
8271 *) Add a useful kludge to allow package maintainers to specify compiler and
8272 other platforms details on the command line without having to patch the
8273 Configure script everytime: One now can use ``perl Configure
8274 <id>:<details>'', i.e. platform ids are allowed to have details appended
8275 to them (seperated by colons). This is treated as there would be a static
8276 pre-configured entry in Configure's %table under key <id> with value
8277 <details> and ``perl Configure <id>'' is called. So, when you want to
8278 perform a quick test-compile under FreeBSD 3.1 with pgcc and without
8279 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"''
8280 now, which overrides the FreeBSD-elf entry on-the-fly.
8281 [Ralf S. Engelschall]
8283 *) Disable new TLS1 ciphersuites by default: they aren't official yet.
8286 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified
8287 on the `perl Configure ...' command line. This way one can compile
8288 OpenSSL libraries with Position Independent Code (PIC) which is needed
8289 for linking it into DSOs.
8290 [Ralf S. Engelschall]
8292 *) Remarkably, export ciphers were totally broken and no-one had noticed!
8296 *) Cleaned up the LICENSE document: The official contact for any license
8297 questions now is the OpenSSL core team under openssl-core@openssl.org.
8298 And add a paragraph about the dual-license situation to make sure people
8299 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply
8300 to the OpenSSL toolkit.
8301 [Ralf S. Engelschall]
8303 *) General source tree makefile cleanups: Made `making xxx in yyy...'
8304 display consistent in the source tree and replaced `/bin/rm' by `rm'.
8305 Additonally cleaned up the `make links' target: Remove unnecessary
8306 semicolons, subsequent redundant removes, inline point.sh into mklink.sh
8307 to speed processing and no longer clutter the display with confusing
8308 stuff. Instead only the actually done links are displayed.
8309 [Ralf S. Engelschall]
8311 *) Permit null encryption ciphersuites, used for authentication only. It used
8312 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this.
8313 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null
8317 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder
8318 signed attributes when verifying signatures (this would break them),
8319 the detached data encoding was wrong and public keys obtained using
8320 X509_get_pubkey() weren't freed.
8323 *) Add text documentation for the BUFFER functions. Also added a work around
8324 to a Win95 console bug. This was triggered by the password read stuff: the
8325 last character typed gets carried over to the next fread(). If you were
8326 generating a new cert request using 'req' for example then the last
8327 character of the passphrase would be CR which would then enter the first
8331 *) Added the new `Includes OpenSSL Cryptography Software' button as
8332 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay
8333 button and can be used by applications based on OpenSSL to show the
8334 relationship to the OpenSSL project.
8335 [Ralf S. Engelschall]
8337 *) Remove confusing variables in function signatures in files
8338 ssl/ssl_lib.c and ssl/ssl.h.
8339 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8341 *) Don't install bss_file.c under PREFIX/include/
8342 [Lennart Bong <lob@kulthea.stacken.kth.se>]
8344 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle
8345 functions that return function pointers and has support for NT specific
8346 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various
8347 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from
8348 unsigned to signed types: this was killing the Win32 compile.
8351 *) Add new certificate file to stack functions,
8352 SSL_add_dir_cert_subjects_to_stack() and
8353 SSL_add_file_cert_subjects_to_stack(). These largely supplant
8354 SSL_load_client_CA_file(), and can be used to add multiple certs easily
8355 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()).
8356 This means that Apache-SSL and similar packages don't have to mess around
8357 to add as many CAs as they want to the preferred list.
8360 *) Experiment with doxygen documentation. Currently only partially applied to
8362 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with
8363 openssl.doxy as the configuration file.
8366 *) Get rid of remaining C++-style comments which strict C compilers hate.
8367 [Ralf S. Engelschall, pointed out by Carlos Amengual]
8369 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not
8370 compiled in by default: it has problems with large keys.
8373 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and
8374 DH private keys and/or callback functions which directly correspond to
8375 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This
8376 is needed for applications which have to configure certificates on a
8377 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis
8379 For the RSA certificate situation is makes no difference, but
8380 for the DSA certificate situation this fixes the "no shared cipher"
8381 problem where the OpenSSL cipher selection procedure failed because the
8382 temporary keys were not overtaken from the context and the API provided
8383 no way to reconfigure them.
8384 The new functions now let applications reconfigure the stuff and they
8385 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh,
8386 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new
8387 non-public-API function ssl_cert_instantiate() is used as a helper
8388 function and also to reduce code redundancy inside ssl_rsa.c.
8389 [Ralf S. Engelschall]
8391 *) Move s_server -dcert and -dkey options out of the undocumented feature
8392 area because they are useful for the DSA situation and should be
8393 recognized by the users.
8394 [Ralf S. Engelschall]
8396 *) Fix the cipher decision scheme for export ciphers: the export bits are
8397 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within
8398 SSL_EXP_MASK. So, the original variable has to be used instead of the
8399 already masked variable.
8400 [Richard Levitte <levitte@stacken.kth.se>]
8402 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c
8403 [Richard Levitte <levitte@stacken.kth.se>]
8405 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal()
8406 from `int' to `unsigned int' because it's a length and initialized by
8407 EVP_DigestFinal() which expects an `unsigned int *'.
8408 [Richard Levitte <levitte@stacken.kth.se>]
8410 *) Don't hard-code path to Perl interpreter on shebang line of Configure
8411 script. Instead use the usual Shell->Perl transition trick.
8412 [Ralf S. Engelschall]
8414 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates
8415 (in addition to RSA certificates) to match the behaviour of `openssl dsa
8416 -noout -modulus' as it's already the case for `openssl rsa -noout
8417 -modulus'. For RSA the -modulus is the real "modulus" while for DSA
8418 currently the public key is printed (a decision which was already done by
8419 `openssl dsa -modulus' in the past) which serves a similar purpose.
8420 Additionally the NO_RSA no longer completely removes the whole -modulus
8421 option; it now only avoids using the RSA stuff. Same applies to NO_DSA
8423 [Ralf S. Engelschall]
8425 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested
8426 BIO. See the source (crypto/evp/bio_ok.c) for more info.
8427 [Arne Ansper <arne@ats.cyber.ee>]
8429 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs
8430 to be added. Now both 'req' and 'ca' can use new objects defined in the
8434 *) Add cool BIO that does syslog (or event log on NT).
8435 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie]
8437 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5,
8438 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and
8439 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher
8440 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt.
8443 *) Add preliminary config info for new extension code.
8446 *) Make RSA_NO_PADDING really use no padding.
8447 [Ulf Moeller <ulf@fitug.de>]
8449 *) Generate errors when private/public key check is done.
8452 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support
8453 for some CRL extensions and new objects added.
8456 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private
8457 key usage extension and fuller support for authority key id.
8460 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved
8461 padding method for RSA, which is recommended for new applications in PKCS
8462 #1 v2.0 (RFC 2437, October 1998).
8463 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical
8464 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure
8465 against Bleichbacher's attack on RSA.
8466 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by
8469 *) Updates to the new SSL compression code
8470 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8472 *) Fix so that the version number in the master secret, when passed
8473 via RSA, checks that if TLS was proposed, but we roll back to SSLv3
8474 (because the server will not accept higher), that the version number
8475 is 0x03,0x01, not 0x03,0x00
8476 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8478 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory
8479 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes
8480 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c
8483 *) Support for RAW extensions where an arbitrary extension can be
8484 created by including its DER encoding. See apps/openssl.cnf for
8488 *) Make sure latest Perl versions don't interpret some generated C array
8489 code as Perl array code in the crypto/err/err_genc.pl script.
8490 [Lars Weber <3weber@informatik.uni-hamburg.de>]
8492 *) Modify ms/do_ms.bat to not generate assembly language makefiles since
8493 not many people have the assembler. Various Win32 compilation fixes and
8494 update to the INSTALL.W32 file with (hopefully) more accurate Win32
8498 *) Modify configure script 'Configure' to automatically create crypto/date.h
8499 file under Win32 and also build pem.h from pem.org. New script
8500 util/mkfiles.pl to create the MINFO file on environments that can't do a
8501 'make files': perl util/mkfiles.pl >MINFO should work.
8504 *) Major rework of DES function declarations, in the pursuit of correctness
8505 and purity. As a result, many evil casts evaporated, and some weirdness,
8506 too. You may find this causes warnings in your code. Zapping your evil
8507 casts will probably fix them. Mostly.
8510 *) Fix for a typo in asn1.h. Bug fix to object creation script
8511 obj_dat.pl. It considered a zero in an object definition to mean
8512 "end of object": none of the objects in objects.h have any zeros
8513 so it wasn't spotted.
8514 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>]
8516 *) Add support for Triple DES Cipher Block Chaining with Output Feedback
8517 Masking (CBCM). In the absence of test vectors, the best I have been able
8518 to do is check that the decrypt undoes the encrypt, so far. Send me test
8519 vectors if you have them.
8522 *) Correct calculation of key length for export ciphers (too much space was
8523 allocated for null ciphers). This has not been tested!
8526 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage
8527 message is now correct (it understands "crypto" and "ssl" on its
8528 command line). There is also now an "update" option. This will update
8529 the util/ssleay.num and util/libeay.num files with any new functions.
8531 perl util/mkdef.pl crypto ssl update
8532 it will update them.
8535 *) Overhauled the Perl interface (perl/*):
8536 - ported BN stuff to OpenSSL's different BN library
8537 - made the perl/ source tree CVS-aware
8538 - renamed the package from SSLeay to OpenSSL (the files still contain
8539 their history because I've copied them in the repository)
8540 - removed obsolete files (the test scripts will be replaced
8541 by better Test::Harness variants in the future)
8542 [Ralf S. Engelschall]
8544 *) First cut for a very conservative source tree cleanup:
8545 1. merge various obsolete readme texts into doc/ssleay.txt
8546 where we collect the old documents and readme texts.
8547 2. remove the first part of files where I'm already sure that we no
8548 longer need them because of three reasons: either they are just temporary
8549 files which were left by Eric or they are preserved original files where
8550 I've verified that the diff is also available in the CVS via "cvs diff
8551 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for
8552 the crypto/md/ stuff).
8553 [Ralf S. Engelschall]
8555 *) More extension code. Incomplete support for subject and issuer alt
8556 name, issuer and authority key id. Change the i2v function parameters
8557 and add an extra 'crl' parameter in the X509V3_CTX structure: guess
8558 what that's for :-) Fix to ASN1 macro which messed up
8559 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED.
8562 *) Preliminary support for ENUMERATED type. This is largely copied from the
8566 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy.
8567 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8569 *) Make sure `make rehash' target really finds the `openssl' program.
8570 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>]
8572 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd
8573 like to hear about it if this slows down other processors.
8576 *) Add CygWin32 platform information to Configure script.
8577 [Alan Batie <batie@aahz.jf.intel.com>]
8579 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm'
8580 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>]
8582 *) New program nseq to manipulate netscape certificate sequences
8585 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a
8589 *) Fixes to BN code. Previously the default was to define BN_RECURSION
8590 but the BN code had some problems that would cause failures when
8591 doing certificate verification and some other functions.
8592 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)]
8594 *) Add ASN1 and PEM code to support netscape certificate sequences.
8597 *) Add ASN1 and PEM code to support netscape certificate sequences.
8600 *) Add several PKIX and private extended key usage OIDs.
8603 *) Modify the 'ca' program to handle the new extension code. Modify
8604 openssl.cnf for new extension format, add comments.
8607 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req'
8608 and add a sample to openssl.cnf so req -x509 now adds appropriate
8612 *) Continued X509 V3 changes. Add to other makefiles, integrate with the
8613 error code, add initial support to X509_print() and x509 application.
8616 *) Takes a deep breath and start addding X509 V3 extension support code. Add
8617 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this
8618 stuff is currently isolated and isn't even compiled yet.
8621 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL
8622 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print.
8623 Removed the versions check from X509 routines when loading extensions:
8624 this allows certain broken certificates that don't set the version
8625 properly to be processed.
8628 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another
8629 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which
8630 can still be regenerated with "make depend".
8633 *) Spelling mistake in C version of CAST-128.
8634 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>]
8636 *) Changes to the error generation code. The perl script err-code.pl
8637 now reads in the old error codes and retains the old numbers, only
8638 adding new ones if necessary. It also only changes the .err files if new
8639 codes are added. The makefiles have been modified to only insert errors
8640 when needed (to avoid needlessly modifying header files). This is done
8641 by only inserting errors if the .err file is newer than the auto generated
8642 C file. To rebuild all the error codes from scratch (the old behaviour)
8643 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl
8644 or delete all the .err files.
8647 *) CAST-128 was incorrectly implemented for short keys. The C version has
8648 been fixed, but is untested. The assembler versions are also fixed, but
8649 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing
8650 to regenerate it if needed.
8651 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun
8652 Hagino <itojun@kame.net>]
8654 *) File was opened incorrectly in randfile.c.
8655 [Ulf Möller <ulf@fitug.de>]
8657 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print
8658 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or
8659 GeneralizedTime. ASN1_TIME is the proper type used in certificates et
8660 al: it's just almost always a UTCTime. Note this patch adds new error
8661 codes so do a "make errors" if there are problems.
8664 *) Correct Linux 1 recognition in config.
8665 [Ulf Möller <ulf@fitug.de>]
8667 *) Remove pointless MD5 hash when using DSA keys in ca.
8668 [Anonymous <nobody@replay.com>]
8670 *) Generate an error if given an empty string as a cert directory. Also
8671 generate an error if handed NULL (previously returned 0 to indicate an
8672 error, but didn't set one).
8673 [Ben Laurie, reported by Anonymous <nobody@replay.com>]
8675 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last.
8678 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct
8679 parameters. This was causing a warning which killed off the Win32 compile.
8682 *) Remove C++ style comments from crypto/bn/bn_local.h.
8683 [Neil Costigan <neil.costigan@celocom.com>]
8685 *) The function OBJ_txt2nid was broken. It was supposed to return a nid
8686 based on a text string, looking up short and long names and finally
8687 "dot" format. The "dot" format stuff didn't work. Added new function
8688 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote
8689 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the
8690 OID is not part of the table.
8693 *) Add prototypes to X509 lookup/verify methods, fixing a bug in
8694 X509_LOOKUP_by_alias().
8697 *) Sort openssl functions by name.
8700 *) Get the gendsa program working (hopefully) and add it to app list. Remove
8701 encryption from sample DSA keys (in case anyone is interested the password
8705 *) Make _all_ *_free functions accept a NULL pointer.
8706 [Frans Heymans <fheymans@isaserver.be>]
8708 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use
8710 [Anonymous <nobody@replay.com>]
8712 *) s_server should send the CAfile as acceptable CAs, not its own cert.
8713 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8715 *) Don't blow it for numeric -newkey arguments to apps/req.
8716 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>]
8718 *) Temp key "for export" tests were wrong in s3_srvr.c.
8719 [Anonymous <nobody@replay.com>]
8721 *) Add prototype for temp key callback functions
8722 SSL_CTX_set_tmp_{rsa,dh}_callback().
8725 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and
8726 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey().
8729 *) X509_name_add_entry() freed the wrong thing after an error.
8730 [Arne Ansper <arne@ats.cyber.ee>]
8732 *) rsa_eay.c would attempt to free a NULL context.
8733 [Arne Ansper <arne@ats.cyber.ee>]
8735 *) BIO_s_socket() had a broken should_retry() on Windoze.
8736 [Arne Ansper <arne@ats.cyber.ee>]
8738 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH.
8739 [Arne Ansper <arne@ats.cyber.ee>]
8741 *) Make sure the already existing X509_STORE->depth variable is initialized
8742 in X509_STORE_new(), but document the fact that this variable is still
8743 unused in the certificate verification process.
8744 [Ralf S. Engelschall]
8746 *) Fix the various library and apps files to free up pkeys obtained from
8747 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions.
8750 *) Fix reference counting in X509_PUBKEY_get(). This makes
8751 demos/maurice/example2.c work, amongst others, probably.
8752 [Steve Henson and Ben Laurie]
8754 *) First cut of a cleanup for apps/. First the `ssleay' program is now named
8755 `openssl' and second, the shortcut symlinks for the `openssl <command>'
8756 are no longer created. This way we have a single and consistent command
8757 line interface `openssl <command>', similar to `cvs <command>'.
8758 [Ralf S. Engelschall, Paul Sutton and Ben Laurie]
8760 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey
8761 BIT STRING wrapper always have zero unused bits.
8764 *) Add CA.pl, perl version of CA.sh, add extended key usage OID.
8767 *) Make the top-level INSTALL documentation easier to understand.
8770 *) Makefiles updated to exit if an error occurs in a sub-directory
8771 make (including if user presses ^C) [Paul Sutton]
8773 *) Make Montgomery context stuff explicit in RSA data structure.
8776 *) Fix build order of pem and err to allow for generated pem.h.
8779 *) Fix renumbering bug in X509_NAME_delete_entry().
8782 *) Enhanced the err-ins.pl script so it makes the error library number
8783 global and can add a library name. This is needed for external ASN1 and
8784 other error libraries.
8787 *) Fixed sk_insert which never worked properly.
8790 *) Fix ASN1 macros so they can handle indefinite length construted
8791 EXPLICIT tags. Some non standard certificates use these: they can now
8795 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc)
8796 into a single doc/ssleay.txt bundle. This way the information is still
8797 preserved but no longer messes up this directory. Now it's new room for
8798 the new set of documenation files.
8799 [Ralf S. Engelschall]
8801 *) SETs were incorrectly DER encoded. This was a major pain, because they
8802 shared code with SEQUENCEs, which aren't coded the same. This means that
8803 almost everything to do with SETs or SEQUENCEs has either changed name or
8804 number of arguments.
8805 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>]
8807 *) Fix test data to work with the above.
8810 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but
8811 was already fixed by Eric for 0.9.1 it seems.
8812 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>]
8814 *) Autodetect FreeBSD3.
8817 *) Fix various bugs in Configure. This affects the following platforms:
8821 unixware-2.0-pentium
8825 *) Eliminate generated files from CVS. Reorder tests to regenerate files
8826 before they are needed.
8829 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy).
8833 Changes between 0.9.1b and 0.9.1c [23-Dec-1998]
8835 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and
8836 changed SSLeay to OpenSSL in version strings.
8837 [Ralf S. Engelschall]
8839 *) Some fixups to the top-level documents.
8842 *) Fixed the nasty bug where rsaref.h was not found under compile-time
8843 because the symlink to include/ was missing.
8844 [Ralf S. Engelschall]
8846 *) Incorporated the popular no-RSA/DSA-only patches
8847 which allow to compile a RSA-free SSLeay.
8848 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall]
8850 *) Fixed nasty rehash problem under `make -f Makefile.ssl links'
8851 when "ssleay" is still not found.
8852 [Ralf S. Engelschall]
8854 *) Added more platforms to Configure: Cray T3E, HPUX 11,
8855 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>]
8857 *) Updated the README file.
8858 [Ralf S. Engelschall]
8860 *) Added various .cvsignore files in the CVS repository subdirs
8861 to make a "cvs update" really silent.
8862 [Ralf S. Engelschall]
8864 *) Recompiled the error-definition header files and added
8865 missing symbols to the Win32 linker tables.
8866 [Ralf S. Engelschall]
8868 *) Cleaned up the top-level documents;
8869 o new files: CHANGES and LICENSE
8870 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay
8871 o merged COPYRIGHT into LICENSE
8872 o removed obsolete TODO file
8873 o renamed MICROSOFT to INSTALL.W32
8874 [Ralf S. Engelschall]
8876 *) Removed dummy files from the 0.9.1b source tree:
8877 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi
8878 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f
8879 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f
8880 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f
8881 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f
8882 [Ralf S. Engelschall]
8884 *) Added various platform portability fixes.
8887 *) The Genesis of the OpenSSL rpject:
8888 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A.
8889 Young and Tim J. Hudson created while they were working for C2Net until
8891 [The OpenSSL Project]
8894 Changes between 0.9.0b and 0.9.1b [not released]
8896 *) Updated a few CA certificates under certs/
8899 *) Changed some BIGNUM api stuff.
8902 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD,
8903 DGUX x86, Linux Alpha, etc.
8906 *) New COMP library [crypto/comp/] for SSL Record Layer Compression:
8907 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is
8911 *) Add -strparse option to asn1pars program which parses nested
8913 [Dr Stephen Henson <shenson@bigfoot.com>]
8915 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs.
8918 *) DSA fix for "ca" program.
8921 *) Added "-genkey" option to "dsaparam" program.
8924 *) Added RIPE MD160 (rmd160) message digest.
8927 *) Added -a (all) option to "ssleay version" command.
8930 *) Added PLATFORM define which is the id given to Configure.
8933 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking.
8936 *) Extended the ASN.1 parser routines.
8939 *) Extended BIO routines to support REUSEADDR, seek, tell, etc.
8942 *) Added a BN_CTX to the BN library.
8945 *) Fixed the weak key values in DES library
8948 *) Changed API in EVP library for cipher aliases.
8951 *) Added support for RC2/64bit cipher.
8954 *) Converted the lhash library to the crypto/mem.c functions.
8957 *) Added more recognized ASN.1 object ids.
8960 *) Added more RSA padding checks for SSL/TLS.
8963 *) Added BIO proxy/filter functionality.
8966 *) Added extra_certs to SSL_CTX which can be used
8967 send extra CA certificates to the client in the CA cert chain sending
8968 process. It can be configured with SSL_CTX_add_extra_chain_cert().
8971 *) Now Fortezza is denied in the authentication phase because
8972 this is key exchange mechanism is not supported by SSLeay at all.
8975 *) Additional PKCS1 checks.
8978 *) Support the string "TLSv1" for all TLS v1 ciphers.
8981 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the
8982 ex_data index of the SSL context in the X509_STORE_CTX ex_data.
8985 *) Fixed a few memory leaks.
8988 *) Fixed various code and comment typos.
8991 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0
8992 bytes sent in the client random.
8993 [Edward Bishop <ebishop@spyglass.com>]